Filter bottle device, filter bottle assembly and filter bottle cap assembly

Abstract

Provided in the present invention is a filter bottle device, which is configured to use a sealing spacer to separate "fixing" and "sealing" between a filter bottle cap and a filter bottle of the filter bottle device, such that the sealing between the filter bottle cap and the filter bottle of the filter bottle device of the present invention is better, and the filter bottle can be more easily tightened and untightened by the filter bottle cap.

Description

Filter bottle device, filter bottle assembly and filter bottle cap assembly TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification, in particular to a filter bottle device and a filter bottle assembly. The present application further relates to a filter bottle cap assembly. BACKGROUND

[0002] The existing filter bottle device is generally sealed by pressing or side sealing. As shown in FIG. 1, the sealing part 31P is sealed by pressing, and the sealing part 32P is sealed by side sealing. It can be understood that if the sealing part is sealed by pressing, the filter bottle cap 2P and the filter bottle 1P need to be screwed as tightly as possible to compress the sealing part 31P to a sufficient deformation, so as to achieve reliable sealing between the filter bottle cap 2P and the filter bottle 1P. This will inevitably cause the filter bottle cap 2P and the filter bottle 1P to need to be screwed tightly by the user using a larger force, and when disassembled, it is difficult to disassemble because the filter bottle cap 2P is too tightly screwed. Moreover, since the size of the sealing part 31P is large (the diameter of the circular ring surrounded by the sealing part 31P is not less than the inner diameter of the filter bottle 1P), when the filter bottle cap 2P and the filter bottle 1P rotate relative to each other, the friction caused by the sealing part 31P is also large, which will further hinder the screwing and unscrewing process between the filter bottle cap 2P and the filter bottle 1P. If the filter bottle cap 2P and the filter bottle 1P are sealed by side sealing, the screwing degree between the filter bottle cap 2P and the filter bottle 1P can be slightly reduced, but the sealing part 32P also has a large, even larger size, which will also cause a large friction, thereby causing a large hindrance to the screwing and unscrewing process of the filter bottle cap 2P and the filter bottle 1P.

[0003] In addition, since the filter bottle 1P and the filter bottle cap 2P are usually made of plastic material, it is difficult to ensure that the inner wall of the filter bottle cap 2P forms a regular cylindrical shape and that the side wall of the filter bottle cap 2P has a high degree of roundness during manufacturing and molding. In addition, during the screwing process, the bottle wall of the filter bottle 1P lacks transverse (radial) support from the inside of the filter bottle 1P, which causes the filter bottle 1P and / or the filter bottle cap 2P to easily deform during the screwing process of the filter bottle cap 2P. This forces the manufacturer of the filter bottle device to select a sealing part with a large compression amount when selecting the sealing part, so as to compensate for the difficulty in sealing caused by the deformation of the filter bottle 1P and / or the filter bottle cap 2P. However, the sealing part has a large compression amount, and the user also needs to replace the sealing part when replacing the filter element of the filter bottle device, because the large compression amount of the sealing part makes it difficult for the sealing part to rebound and recover from deformation, and if the sealing part is continued to be used, the effectiveness and reliability of the sealing between the filter bottle 1P and the filter bottle cap 2P cannot be ensured.

[0004] Moreover, during the screwing of the filter bottle cap 2P and the filter bottle 1P, there is relative movement between the two, and it is difficult for either the sealing member 31P or the sealing member 32P to rotate in synchronization with the filter bottle cap 2P or the filter bottle 1P, so that the sealing members are mostly in a twisted state after the filter bottle cap 2P and the filter bottle 1P are screwed, which can also cause the seal between the filter bottle cap 2P and the filter bottle 1P to be broken, thereby causing water leakage and product yield reduction. SUMMARY

[0005] The main advantage of the present application is to provide a filter bottle device which is arranged to separate the "fixing" and "sealing" between the filter bottle cap and the filter bottle of the filter bottle device by using the partition member, so that the sealing between the filter bottle cap and the filter bottle of the filter bottle device of the present application is better, and the filter bottle can be more easily screwed and unscrewed by the filter bottle cap.

[0006] The above and other advantages of the present application will become more apparent from the following description and accompanying drawings.

[0007] The above and other advantages and features of the present application will become more apparent from the following description of the application with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0008] FIG. 1 is a cross-sectional view of a conventional filter bottle device.

[0009] FIG. 2A is a perspective view of a filter bottle device according to a first embodiment of the present application.

[0010] FIG. 2B is a cross-sectional view of the filter bottle device according to the first embodiment of the present application.

[0011] FIG. 2C is a cross-sectional view of the filter bottle device according to the first embodiment of the present application, in which the through passage of the partition member is connected to the water cavity between the filter cartridge and the housing.

[0012] FIG. 2D is a cross-sectional view of the filter bottle device according to the first embodiment of the present application, in which the through passage of the partition member is connected to the filter cartridge (or the opening of the filter cartridge).

[0013] FIG. 3A is a perspective view of the partition member of the filter bottle device according to the first embodiment of the present application.

[0014] FIG. 3B is a cross-sectional view of the partition member of the filter bottle device according to the first embodiment of the present application.

[0015] FIG. 3C is another cross-sectional view of the partition member of the filter bottle device according to the first embodiment of the present application, in which the metal ring is arranged on the outer peripheral wall of the lower end of the partition member.

[0016] FIG. 3D is a perspective view of the partition member, the retaining bracket, and the second sealing member of the filter bottle device according to the first embodiment of the present application.

[0017] Figure 3E is a perspective view of a retaining tray of the filter bottle apparatus according to the first embodiment of the present application.

[0018] Figure 4A is a perspective view of an alternative embodiment of the filter bottle apparatus according to the first embodiment of the present application.

[0019] Figure 4B is a cross-sectional view of the alternative embodiment of the filter bottle apparatus according to the first embodiment of the present application.

[0020] Figure 5A is a perspective view of a closure of the alternative embodiment of the filter bottle apparatus according to the first embodiment of the present application.

[0021] Figure 5B is a cross-sectional view of the closure of the alternative embodiment of the filter bottle apparatus according to the first embodiment of the present application.

[0022] Figure 5C is another cross-sectional view of the closure of the alternative embodiment of the filter bottle apparatus according to the first embodiment of the present application, wherein a metal ring is provided on the outer peripheral wall of the lower end of the closure.

[0023] Figure 6A is a perspective view of the filter bottle apparatus according to the second embodiment of the present application.

[0024] Figure 6B is a cross-sectional view of the filter bottle apparatus according to the second embodiment of the present application, wherein the filter bottle cap is connected to the filter bottle by a threaded connection.

[0025] Figure 7A is a cross-sectional view of the filter bottle cap of the filter bottle apparatus according to the second embodiment of the present application, wherein the filter bottle cap is connected by a threaded connection.

[0026] Figure 7B is a perspective view of the closure of the filter bottle apparatus according to the second embodiment of the present application.

[0027] Figure 7C is a cross-sectional view of the closure of the filter bottle apparatus according to the second embodiment of the present application.

[0028] Figure 7D is another cross-sectional view of the closure of the filter bottle apparatus according to the second embodiment of the present application, wherein a metal ring is provided on the outer peripheral wall of the lower end of the closure.

[0029] Figure 7E is a cross-sectional view of the filter bottle apparatus according to the second embodiment of the present application, wherein the filter bottle cap is connected to the filter bottle by a twist-and-click connection.

[0030] Figure 7F is a cross-sectional view of the filter bottle cap of the filter bottle apparatus according to the second embodiment of the present application, wherein the filter bottle cap is connected by a twist-and-click connection.

[0031] Figure 7G is a partial perspective view of the filter bottle of the filter bottle apparatus according to the second embodiment of the present application, wherein the filter bottle is connected by a twist-and-click connection.

[0032] FIG. 8A is a perspective view of a filter bottle apparatus according to a third embodiment of the present application.

[0033] FIG. 8B is a cross-sectional view of the filter bottle apparatus according to the third embodiment of the present application.

[0034] FIG. 9A is a perspective view of a closure of the filter bottle apparatus according to the third embodiment of the present application.

[0035] FIG. 9B is a cross-sectional view of the closure of the filter bottle apparatus according to the third embodiment of the present application.

[0036] FIG. 9C is another cross-sectional view of the closure of the filter bottle apparatus according to the third embodiment of the present application, in which a metal ring is provided at the outer peripheral wall of the lower end of the closure.

[0037] FIG. 10A is a perspective view of a filter bottle apparatus according to a fourth embodiment of the present application.

[0038] FIG. 10B is a cross-sectional view of the filter bottle apparatus according to the fourth embodiment of the present application.

[0039] FIG. 11A is a perspective view of a closure of the filter bottle apparatus according to the fourth embodiment of the present application.

[0040] FIG. 11B is a cross-sectional view of the closure of the filter bottle apparatus according to the fourth embodiment of the present application.

[0041] FIG. 11C is another cross-sectional view of the closure of the filter bottle apparatus according to the fourth embodiment of the present application, in which a metal ring is provided at the outer peripheral wall of the lower end of the closure.

[0042] FIG. 12A is a perspective view of an alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0043] FIG. 12B is a cross-sectional view of the alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0044] FIG. 13A is a perspective view of a closure of the alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0045] FIG. 13B is a cross-sectional view of the closure of the alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0046] FIG. 13C is another cross-sectional view of the closure of the alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application, in which a metal ring is provided at the outer peripheral wall of the lower end of the closure.

[0047] FIG. 14 is a perspective view of a filter bottle apparatus according to a fifth embodiment of the present application.

[0048] FIG. 15 is a cross-sectional view of the filter bottle apparatus according to the fifth embodiment of the present application.

[0049] Figure 16 is a perspective view of a partition of the filter bottle apparatus according to the fifth embodiment of the present application.

[0050] Figure 17 is a cross-sectional view of the partition of the filter bottle apparatus according to the fifth embodiment of the present application.

[0051] Figure 18 is a perspective view of a restraining member of the filter bottle apparatus according to the fifth embodiment of the present application.

[0052] Figure 19 is a cross-sectional view of another filter bottle apparatus according to the fifth embodiment of the present application.

[0053] Figure 20 is a cross-sectional view of a locking unit according to the fifth embodiment of the present application.

[0054] Figure 21 is a cross-sectional view of an alternative implementation of another filter bottle apparatus according to the fifth embodiment of the present application.

[0055] Figure 22A is a perspective view of a filter bottle apparatus according to the fifth embodiment of the present application, wherein a first fluid passage and a second fluid passage of a filter bottle cap of the filter bottle apparatus are at least partially located on a straight line.

[0056] Figure 22B is a cross-sectional view of the filter bottle apparatus according to the fifth embodiment of the present application, wherein the first fluid passage and the second fluid passage of the filter bottle cap are at least partially located on a straight line.

[0057] Figure 23A is a perspective view of the filter bottle cap of the filter bottle apparatus according to the fifth embodiment of the present application.

[0058] Figure 23B is a cross-sectional view of the filter bottle cap of the filter bottle apparatus according to the fifth embodiment of the present application.

[0059] Figure 23C is another cross-sectional view of the filter bottle cap of the filter bottle apparatus according to the fifth embodiment of the present application.

[0060] Figure 23D is another cross-sectional view of the filter bottle cap of the filter bottle apparatus according to the fifth embodiment of the present application.

[0061] Figure 24A is a perspective view of a filter bottle apparatus according to a sixth embodiment of the present application.

[0062] Figure 25A is a cross-sectional view of a filter bottle apparatus according to the sixth embodiment of the present application.

[0063] Figure 25B is a cross-sectional view of a locking unit according to the sixth embodiment of the present application.

[0064] Figure 25C is a cross-sectional view of the filter bottle apparatus according to the sixth embodiment of the present application, wherein a through passage of a partition is in communication with a water cavity between a filter cartridge and a housing.

[0065] Figure 25D is a cross-sectional view of the filter bottle apparatus of the sixth embodiment of the present application, wherein the through passage of the partition is in communication with the filter cartridge (or the opening of the filter cartridge).

[0066] Figure 26 is a cross-sectional view of the filter bottle cap of the filter bottle apparatus of the sixth embodiment of the present application.

[0067] Figure 27A is a perspective view of the partition of the filter bottle apparatus of the sixth embodiment of the present application.

[0068] Figure 27B is a cross-sectional view of the partition of the filter bottle apparatus of the sixth embodiment of the present application.

[0069] Figure 28 is a perspective view of an alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0070] Figure 29 is a cross-sectional view of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0071] Figure 30A is a perspective view of the partition of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0072] Figure 30B is a cross-sectional view of the partition of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0073] Figure 31 is a perspective view of another alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0074] Figure 32 is a cross-sectional view of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0075] Figure 33A is a perspective view of the partition of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0076] Figure 33B is a cross-sectional view of the partition of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0077] Figure 34 is a cross-sectional view of another alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0078] Figure 35A is a perspective view of the partition of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0079] Figure 35B is a cross-sectional view of the partition of the alternative implementation of the filter bottle apparatus of the sixth embodiment of the present application.

[0080] Figure 36A is a perspective view of the filter bottle apparatus of the seventh embodiment of the present application.

[0081] Figure 36B is a cross-sectional view of the filter bottle apparatus of the seventh embodiment of the present application.

[0082] Figure 36C is a cross-sectional view of the filter bottle apparatus according to the seventh embodiment of the present application, wherein the through passage of the partition is in communication with the water cavity between the filter cartridge and the housing.

[0083] Figure 36D is a cross-sectional view of the filter bottle apparatus according to the seventh embodiment of the present application, wherein the through passage of the partition is in communication with the filter cartridge (or the opening of the filter cartridge).

[0084] Figure 37A is a perspective view of the partition of the filter bottle apparatus according to the seventh embodiment of the present application.

[0085] Figure 37B is a cross-sectional view of the partition of the filter bottle apparatus according to the seventh embodiment of the present application.

[0086] Figure 37C is another cross-sectional view of the partition of the filter bottle apparatus according to the seventh embodiment of the present application, wherein the metal ring is disposed on the outer peripheral wall of the lower end of the partition.

[0087] Figure 37D is a perspective view of the partition, the retaining holder and the second seal of the filter bottle apparatus according to the seventh embodiment of the present application.

[0088] Figure 37E is a perspective view of the retaining holder of the filter bottle apparatus according to the seventh embodiment of the present application.

[0089] Figure 38A is a perspective view of an alternative implementation of the filter bottle apparatus according to the seventh embodiment of the present application.

[0090] Figure 38B is a cross-sectional view of the alternative implementation of the filter bottle apparatus according to the seventh embodiment of the present application.

[0091] Figure 39A is a perspective view of the partition of the alternative implementation of the filter bottle apparatus according to the seventh embodiment of the present application.

[0092] Figure 39B is a cross-sectional view of the partition of the alternative implementation of the filter bottle apparatus according to the seventh embodiment of the present application.

[0093] Figure 40A is a perspective view of the filter bottle apparatus according to the eighth embodiment of the present application.

[0094] Figure 40B is a cross-sectional view of the filter bottle apparatus according to the eighth embodiment of the present application, wherein the filter bottle cap is threadedly connected to the filter bottle.

[0095] Figure 41A is a cross-sectional view of the filter bottle cap of the filter bottle apparatus according to the eighth embodiment of the present application, wherein the filter bottle cap is threadedly connected.

[0096] Figure 41B is a perspective view of the partition of the filter bottle apparatus according to the eighth embodiment of the present application.

[0097] Figure 41C is a cross-sectional view of a closure of a filter bottle apparatus according to an eighth embodiment of the present application.

[0098] Figure 41D is a cross-sectional view of a filter bottle apparatus according to the eighth embodiment of the present application, wherein the filter bottle cap is connected to the filter bottle by a snap rotation connection.

[0099] Figure 41E is a cross-sectional view of a filter bottle cap of a filter bottle apparatus according to the eighth embodiment of the present application, wherein the filter bottle cap is connected by a snap rotation connection.

[0100] Figure 41F is a partial perspective view of a filter bottle of a filter bottle apparatus according to the eighth embodiment of the present application, wherein the filter bottle is connected by a snap rotation connection.

[0101] Figure 42A is a perspective view of a filter bottle apparatus according to a ninth embodiment of the present application.

[0102] Figure 42B is a cross-sectional view of a filter bottle apparatus according to the ninth embodiment of the present application.

[0103] Figure 43A is a perspective view of a closure of a filter bottle apparatus according to the ninth embodiment of the present application.

[0104] Figure 43B is a cross-sectional view of a closure of a filter bottle apparatus according to the ninth embodiment of the present application.

[0105] Figure 44A is a perspective view of a filter bottle apparatus according to a tenth embodiment of the present application.

[0106] Figure 44B is a cross-sectional view of a filter bottle apparatus according to the tenth embodiment of the present application.

[0107] Figure 45A is a perspective view of a closure of a filter bottle apparatus according to the tenth embodiment of the present application.

[0108] Figure 45B is a cross-sectional view of a closure of a filter bottle apparatus according to the tenth embodiment of the present application.

[0109] Figure 46A is a perspective view of an alternative implementation of a filter bottle apparatus according to the tenth embodiment of the present application.

[0110] Figure 46B is a cross-sectional view of the alternative implementation of a filter bottle apparatus according to the tenth embodiment of the present application.

[0111] Figure 47A is a perspective view of a closure of the alternative implementation of a filter bottle apparatus according to the tenth embodiment of the present application.

[0112] Figure 47B is a cross-sectional view of a closure of the alternative implementation of a filter bottle apparatus according to the tenth embodiment of the present application.

[0113] Figure 48 is a perspective view of a filter bottle apparatus according to an eleventh embodiment of the present application.

[0114] FIG. 49 is a sectional view of a filter bottle device according to an eleventh embodiment of the present application.

[0115] FIG. 50 is a perspective view of a partition of the filter bottle device according to the eleventh embodiment of the present application.

[0116] FIG. 51 is a sectional view of the partition of the filter bottle device according to the eleventh embodiment of the present application.

[0117] FIG. 52 is a perspective view of a restraint of the filter bottle device according to the eleventh embodiment of the present application.

[0118] FIG. 53 is a sectional view of another filter bottle device according to the eleventh embodiment of the present application.

[0119] FIG. 54 is a sectional view of a locking unit according to the eleventh embodiment of the present application.

[0120] FIG. 55 is a sectional view of an alternative embodiment of another filter bottle device according to the eleventh embodiment of the present application. DETAILED DESCRIPTION

[0121] The following description is provided so that others skilled in the art can have a clear and comprehensive understanding of the present application. Other obvious alternatives, modifications and variations can be derived by those skilled in the art from the present application. Therefore, the scope of the present application should not be limited by the exemplary embodiments described herein.

[0122] Those skilled in the art should understand that, unless otherwise specifically indicated, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, while in another embodiment, the number of the element can be multiple.

[0123] Those skilled in the art should understand that, unless otherwise specifically indicated, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like refer to the orientation or position shown in the drawings, merely for the convenience of describing the present application, and do not indicate or imply that the devices or elements involved must have a particular orientation or position. Therefore, the above terms should not be understood as limiting the present application.

[0124] Referring to FIG. 2A to FIG. 3E of the drawings accompanying the present specification, a filter bottle device according to a first embodiment of the present application is illustrated, which comprises a filter bottle 1z, a filter core 12z, a filter bottle cap 2z and a partition 3z, wherein the filter bottle 1z comprises a housing 11z, the partition 3z comprises a high end 31z and a low end 32z, the housing 11z comprises an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z, the receiving cavity 110z has a mounting opening 1101z formed at the open end 111z of the housing 11z, the filter core 12z is arranged in the receiving cavity 110z, wherein the filter bottle cap 2z is adapted to be detachably connected to the outer sidewall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3z extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2z, wherein the partition 3z is arranged to be rotatable relative to the filter bottle cap 2z. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3z extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2z. Preferably, the filter core 12z and the housing 11z form a water cavity 120z therebetween. Preferably, the high end 31z of the partition 3z is arranged between the filter bottle cap 2z and the filter core 12z, the low end 32z of the partition 3z is arranged between the inner sidewall 24z of the filter bottle cap 2z and the outer wall 1111z of the open end 111z of the housing 11z, wherein the filter bottle cap 2z is capable of driving the partition 3z to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2z is connected to the connecting portion 113z of the housing 11z so that the filter bottle cap 2z presses against the partition 3z, in particular, the filter bottle cap 2z is capable of driving the partition 3z to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2z is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2z is in physical contact with the partition 3z. Preferably, the thickness of the high end 31z is greater than the thickness of the low end 32z, so that the high end 31z has better force resistance performance.

[0125] As shown in FIGS. 2A-3E, the filter bottle device of the present application further comprises at least one first sealing member 51z, wherein the at least one first sealing member 51z is adapted to be arranged between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3z, so that when the filter bottle cap 2z is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2z is in physical contact with the partition 3z, the filter bottle cap 2z can drive the partition 3z to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3z through the first sealing member 51z as the inner circumferential wall 321z of the lower end 32z of the partition 3z moves to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the housing 11z is less than the thickness of the connecting portion 113z of the housing 11z. More preferably, the total thickness of the open end 111z of the housing 11z and the lower end 32z of the partition 3z is substantially the same as the thickness of the connecting portion 113z of the housing 11z, so as to facilitate the connection and sealing between the filter bottle cap 2z and the filter bottle 1z. Those skilled in the art will appreciate that the at least one first sealing member 51z can be considered as a separate element, as part of the inner circumferential wall 321z of the lower end 32z of the partition 3z, or as part of the outer wall 1111z of the open end 111z of the housing 11z, and the arrangement of the at least one first sealing member 51z shall not limit the protection scope of the filter bottle device of the present application. It will be appreciated that the at least one first sealing member 51z is pressed between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3z to ensure the sealing between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3z and to ensure that appropriate friction can be generated between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3z. In other words, when the user fastens the filter bottle cap 2z to the connecting portion 113z of the housing 11z, the filter bottle cap 2z can press against the partition 3z to drive the partition 3z to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3z through the first sealing member 51z.

[0126] When the user rotates the filter bottle 1z to fasten the filter bottle 1z to the filter bottle cap 2z, the movement of the filter bottle 1z is not affected by the partition 3z before the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition 3z; when the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition 3z, the partition 3z can rotate with the filter bottle 1z under the driving of the filter bottle 1z, that is, the partition 3z can rotate with the filter bottle 1z under the friction between the inner circumferential wall 321z of the low end 32z of the partition 3z and the open end 111z of the shell 11z of the filter bottle 1z, so that the filter bottle 1z gradually approaches the high end 31z of the partition 3z or even presses against the high end 31z of the partition 3z with the rotation of the filter bottle 1z; at this time, since the partition 3z can rotate with the filter bottle 1z under the driving of the filter bottle 1z during the installation of the filter bottle 1z, the installation of the filter bottle 1z is basically not hindered by the friction between the partition 3z and the filter bottle 1z, and the filter bottle 1z is easier to be installed. Those skilled in the art can know that the fastening connection between the filter bottle cap 2z and the filter bottle 1z of the filter bottle device of the application refers to the appropriate connection between the filter bottle cap 2z and the filter bottle 1z of the filter bottle device of the application through some connection mode, so that the filter bottle cap 2z and the filter bottle 1z are firmly connected, so that the filter bottle cap 2z can press and drive the partition 3z to move relative to the open end 111z of the shell 11z of the filter bottle 1z, or even further press against the open end 111z of the shell 11z. Those skilled in the art can know that the connection between the filter bottle cap 2z and the filter bottle 1z of the filter bottle device of the application can be achieved in various ways, for example, through threaded connection, rotating buckle connection, or other appropriate ways to achieve detachable connection.

[0127] The filter bottle device has the following advantages. First, when the user fastens the filter bottle cap 2z to the connecting part 113z of the shell 11z of the filter bottle 1z, the filter bottle cap 2z rotates and moves towards the extension part 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cap 2z can press and drive the partition 3z to move towards the extension part 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3z (for example, the friction generated by the first seal 51z), the friction of the filter bottle cap 2z on the partition 3z will be difficult to drive the partition 3z to rotate synchronously. Therefore, the partition 3z does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby basically eliminating the obstruction of the large-size seal to the relative rotation of the filter bottle cap 2z and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cap 2z and the filter bottle 1z. It can be understood that when the user fastens the shell 11z of the filter bottle 1z to the filter bottle cap 2z by rotating the filter bottle 1z, and when the opening end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition 3z, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3z, the partition 3z will rotate under the drive of the filter bottle 1z, the filter bottle 1z is driven to move towards the high end 31z of the partition 3z, and even abuts against the high end 31z of the partition 3z. The filter bottle device has the following advantages. First, when the user fastens the filter bottle cap 2z to the connecting part 113z of the shell 11z of the filter bottle 1z, the filter bottle cap 2z rotates and moves towards the extension part 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cap 2z can press and drive the partition 3z to move towards the extension part 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3z (for example, the friction generated by the first seal 51z), the friction of the filter bottle cap 2z on the partition 3z will be difficult to drive the partition 3z to rotate synchronously. Therefore, the partition 3z does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby basically eliminating the obstruction of the large-size seal to the relative rotation of the filter bottle cap 2z and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cap 2z and the filter bottle 1z.Accordingly, when the filter bottle cap 2z is unscrewed (or screwed off) from the outer wall 1111z of the open end 111z of the shell 11z of the filter bottle 1z, it is also relatively easy. In other words, the present application creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2z and the filter bottle 1z as independent and separate from each other as possible, and to replace the filter bottle cap 2z with the partition piece 3z to undertake the "sealing" function, so that the filter bottle cap 2z and the filter bottle 1z are easier to screw on and unscrew. In addition, since the partition piece 3z can not rotate relative to the filter bottle 1z, the first sealing piece 51z is less likely to be twisted, which can reduce the risk of sealing failure and water leakage. Secondly, when the water pressure acts on the inside of the filter bottle 1z of the filter bottle device of the present application, the water pressure can be used to support the wall of the filter bottle 1z transversely (radially) from the inside of the filter bottle 1z to obtain a more stable structure. At this time, due to the external action of the filter bottle cap 2z and the internal pressure action of the water pressure in the filter bottle 1z, the open end 111z of the filter bottle 1z can have better roundness and expand outward to further press the first sealing piece 51z, so that the sealing between the partition piece 3z and the filter bottle 1z is better. Thirdly, the better sealing between the partition piece 3z and the filter bottle 1z also allows manufacturers or users to choose a sealing piece with a smaller compression amount compared to the traditional sealing method, which further allows the sealing piece to be used multiple times without replacing the sealing piece each time the filter core is replaced. The first sealing piece 51z with a smaller compression amount also makes the relative translation between the partition piece 3z and the filter bottle 1z less obstructed, which is beneficial to further reduce the difficulty of screwing on and unscrewing the filter bottle cap 2z and the filter bottle 1z. Finally, the arrangement of the filter bottle 1z, the filter bottle cap 2z, the partition piece 3z and the first sealing piece 51z of the filter bottle device of the present application further overcomes the defect that the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3z. When the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3z, since the water pressure in the filter bottle 1z is from inside to outside, when the inner wall of the filter bottle 1z is stressed, the shell 11z of the filter bottle 1z expands outward, which may cause the first sealing piece 51z arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3z to loosen and cause the sealing between the inner wall of the open end 111z and the outer wall of the partition piece 3z to be damaged.

[0128] As shown in FIG. 2B and FIG. 3C of the drawings, the filter bottle device of the present application further comprises a metal ring 60z, wherein the metal ring 60z is arranged on the outer peripheral wall 322z of the lower end 32z of the partition 3z. It can be understood that the metal ring 60z arranged on the outer peripheral wall 322z of the lower end 32z of the partition 3z can reduce the deformation or expansion of the lower end 32z of the partition 3z after being pressed, improve the sealing between the lower end 32z of the partition 3z and the open end 111z of the housing 11z of the filter bottle 1z, and prevent the lower end 32z of the partition 3z from being broken when being pressed too much. In addition, the surface of the metal ring 60z is smoother, which can further reduce the friction between the outer peripheral wall 322z of the lower end 32z of the partition 3z and the filter bottle cap 2z. Finally, the metal ring 60z can also help maintain the roundness of the lower end 32z of the partition 3z. Those skilled in the art can understand that the metal ring 60z of the filter bottle device of the present application should have appropriate strength. For example, the metal ring 60z of the filter bottle device of the present application can be made of stainless steel or silicon steel material.

[0129] As shown in FIG. 2A to FIG. 3E of the drawings, preferably, the upper end 31z of the partition 3z of the filter bottle device of the present application extends upward and inward from the lower end 32z, so that the angle a between the upper end 31z and the lower end 32z is obtuse, to improve the force resistance of the partition 3z and prevent the partition 3z from deforming. Accordingly, the upper end 31z of the partition 3z is arranged between the filter bottle cap 2z and the lower end 32z of the partition 3z. Preferably, the angle a formed by the lower end 32z and the upper end 31z is greater than 90 degrees and less than 135 degrees. In addition, the angle a between the upper end 31z and the lower end 32z is obtuse, allowing the lower end 32z to form a cylindrical or trumpet-shaped accommodating space 3201z. Accordingly, the lower end 32z of the partition 3z of the filter bottle device of the present application is cylindrical or trumpet-shaped, so that the filter element 12z can be inserted into the cylindrical or trumpet-shaped accommodating space 3201z formed by the lower end 32z, thereby minimizing the height of the entire filter bottle 1z and ensuring that the improved filter bottle device of the present application can be installed in existing water treatment equipment.

[0130] As shown in FIG. 2A to FIG. 3E of the drawings, preferably, the partition 3z of the filter bottle device of the present application further comprises a set of reinforcing ribs 35z, wherein the reinforcing ribs 35z are arranged on the inner wall of the upper end 31z along the extension direction of the upper end 31z. It can be understood that the reinforcing ribs 35z of the partition 3z can strengthen the strength of the upper end 31z and the entire partition 3z to prevent them from deforming under stress, thereby helping to maintain the roundness of the lower end 32z of the partition 3z.

[0131] As shown in FIGS. 2A-3E, the filter bottle cover 2z of the filter bottle device of the present application comprises an opening portion 21z and a mounting portion 22z extending from the opening portion 21z, and the partition 3z further comprises a through portion 33z, wherein the low end 32z and the through portion 33z are integrally extended from two opposite sides of the high end 31z, respectively, wherein the opening portion 21z forms a through opening 210z, and the through portion 33z forms a through channel 330z, wherein the through portion 33z penetrates out of the through opening 210z of the opening portion 21z. Preferably, the inner side of the opening portion 21z of the filter bottle cover 2z is at least partially in physical contact with the upper side of the high end 31z of the partition 3z. It can be understood that the through channel 330z is adapted to be in communication with the filter core 12z (or the water inlet or outlet of the filter core 12z). Preferably, the high end 31z and the inner wall 1112z of the opening end 111z of the shell 11z surround a through cavity 320z, wherein the through cavity 320z is adapted to be in communication with the through channel 330z and the water cavity 120z or the filter core 12z, respectively, and the through portion 33z penetrates out of the through opening 210z of the opening portion 21z. Further, the mounting portion 22z of the filter bottle cover 2z of the filter bottle device of the present application is adapted to be fastened and connected to the connecting portion 113z of the shell 11z. It can be understood that when the shell 11z of the filter bottle 1z is fastened and connected to the filter bottle cover 2z, due to the frictional force between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3z, the partition 3z will rotate relative to the filter bottle cover 2z with the through portion 33z as the rotation axis under the driving of the filter bottle 1z; when the filter bottle cover 2z is fastened and connected to the shell 11z of the filter bottle 1z, due to the frictional force between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3z, the filter bottle cover 2z will rotate relative to the partition 3z with the through portion 33z as the rotation axis.

[0132] As shown in FIGS. 2A to 3E of the drawings, the mounting portion 22z of the filter bottle cap 2z and the lower end 32z of the partition 3z of the filter bottle device of the present application form a fitting gap 2201z therebetween, wherein the fitting gap 2201z has a proper size. Preferably, the width D3 of the fitting gap 2201z is between 1-2mm. If the fitting gap 2201z between the mounting portion 22z of the filter bottle cap 2z and the lower end 32z of the partition 3z is too large, when the water pressure in the filter bottle 1z of the filter bottle device of the present application presses the open end 111z and drives the lower end 32z of the partition 3z to expand outward, the lower end 32z of the partition 3z can be broken before the filter bottle cap 2z is bound to the lower end 32z of the partition 3z, and if the fitting gap 2201z between the mounting portion 22z of the filter bottle cap 2z and the lower end 32z of the partition 3z is too small, the mounting between the mounting portion 22z of the filter bottle cap 2z and the lower end 32z of the partition 3z can be hindered.

[0133] As shown in FIGS. 2A to 3E of the drawings, the open end 111z of the housing 11z of the filter bottle device of the present application comprises a main portion 1113z and a sealing portion 1114z extending outwardly from the main portion 1113z, wherein the first sealing member 51z is arranged between the sealing portion 1114z of the open end 111z and the inner peripheral wall 321z of the lower end 32z of the partition 3z. Preferably, the lower end 32z is cylindrical or flared along its extending direction, so that the partition 3z is more easily to compress the first sealing member 51z and move relative to the open end 111z of the housing 11z and more easily to gradually achieve the sealing between the sealing portion 1114z of the open end 111z and the lower end 32z of the partition 3z when the partition 3z is pressed and driven by the filter bottle cap 2z. Alternatively, the lower end 32z is cylindrical or flared along its extending direction. Accordingly, the partition 3z is more easily to move away from the sealing portion 1114z of the open end 111z when the filter bottle cap 2z is removed.

[0134] As shown in FIGS. 2A-3E, the high end 31z of the partition 3z of the filter bottle device of the present application forms a guide groove 310z, wherein the guide groove 310z is arranged adjacent to the low end 32z of the partition 3z and opposite to the open end 111z of the shell 11z, and wherein the top end 1115z of the open end 111z of the shell 11z is arranged to be placed in the guide groove 310z (the inner diameter of the top end 1115z of the open end 111z is slightly larger than the outer diameter of the guide groove 310z). Accordingly, the guide groove 310z of the high end 31z can guide the top end 1115z of the open end 111z of the shell 11z into the guide groove 310z and, when the filter bottle cap 2z presses and drives the partition 3z to move relative to the open end 111z of the shell 11z of the filter bottle 1z, guide and help the low end 32z of the partition 3z to press against the outer wall 1111z of the open end 111z of the shell 11z (e.g., through the first sealing member 51z pressing against the outer wall 1111z of the open end 111z of the shell 11z). It can be understood that the guide groove 310z, the open end 111z of the shell 11z, the first sealing member 51z and the inner circumferential wall 321z of the low end 32z of the partition 3z cooperate with each other, so that the guide groove 310z and the inner circumferential wall 321z of the low end 32z of the partition 3z better wrap the first sealing member 51z. It can be understood that, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner circumferential wall 321z of the low end 32z of the partition 3z to deform outwardly, the guide groove 310z can cause the inner circumferential wall 321z of the low end 32z of the partition 3z to always press the first sealing member 51z and deform outwardly synchronously with the open end 111z of the shell 11z (because, due to the positioning effect of the guide groove 310z, when the inner circumferential wall 321z of the low end 32z of the partition 3z deforms excessively outwardly under water pressure, the guide groove 310z will press against the inner wall 1112z of the open end 111z of the shell 11z, so that the inner circumferential wall 321z of the low end 32z of the partition 3z cannot deform excessively outwardly), that is, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner circumferential wall 321z of the low end 32z of the partition 3z to deform outwardly, the first sealing member 51z is always pressed by the inner circumferential wall 321z of the low end 32z of the partition 3z to maintain the sealing between the inner circumferential wall 321z of the low end 32z of the partition 3z and the open end 111z of the shell 11z.When the water pressure inside the filter bottle 1z drops and the open end 111z of the shell 11z deforms inwardly, the open end 111z of the shell 11z presses against the guide groove 310z inwardly, so that the guide groove 310z further pulls the inner circumferential wall 321z of the low end 32z of the partition piece 3z to deform inwardly, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3z always presses the first sealing piece 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0135] As shown in FIGS. 2A-3E of the drawings, preferably, the filter bottle device of the present application further comprises at least one second sealing piece 52z, wherein the second sealing piece 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. It can be understood that the second sealing piece 52z makes the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z flexibly connected. In particular, the shell 11z and the partition piece 3z are usually made of plastic material, which causes the product to be prone to deformation after injection molding. The flexible connection reduces the higher production precision requirement for the cooperation between the inner diameter of the top end 1115z of the open end 111z and the outer diameter of the guide groove 310z. Those skilled in the art can know that the arrangement of the at least one second sealing piece 52z is basically the same as that of the at least one first sealing piece 51z, which can be arranged as an independent element or can be regarded as a part of the inner wall 1112z of the open end 111z of the shell 11z or the groove wall 3101z of the guide groove 310z.

[0136] Notably, the second seal 52z further improves the sealing between the low end 32z of the partition 3z and the open end 111z of the shell 11z by at least two sealing effects. First, the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z, which itself strengthens the sealing between the low end 32z of the partition 3z and the open end 111z of the shell 11z. Second, when water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to between the low end 32z of the partition 3z and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3z to deform outward, at which time the low end 32z of the partition 3z moves outward, driving the groove wall 3101z of the guide groove 310z to move outward, driving the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.Therefore, when the water pressure in the filter bottle 1z is low, the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z can realize the sealing between the open end 111z of the shell 11z and the partition piece 3z; when the water pressure in the filter bottle 1z is high, the open end 111z of the shell 11z of the filter bottle 1z expands outward under the water pressure, and the first seal 51z tightly seals the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3z and the outer wall 1111z of the open end 111z of the shell 11z under the clamping action of the low end 32z of the partition piece 3z and the open end 111z of the shell 11z; when the water pressure in the filter bottle 1z is high, when the water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3z and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will compress and drive the low end 32z of the partition piece 3z to deform outward, and the water pressure will deform the first seal 51z, drive the low end 32z of the partition piece 3z to move outward, and drive the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby realizing the self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.

[0137] As shown in FIGS. 2A-3E, the filter bottle device of the present application further comprises a retaining bracket 53z, wherein the retaining bracket 53z is fixed between the high end 31z of the partition 3z and the filter core 12z, wherein the retaining bracket 53z is at least partially arranged opposite to the guide slot 310z to retain the second seal 52z at least partially within the guide slot 310z. Preferably, the retaining bracket 53z is arranged below the high end 31z of the partition 3z and the retaining bracket 53z is surrounded by the inner wall 1112z of the open end 111z of the housing 11z. Preferably, the retaining bracket 53z can be fixed to the partition 3z by welding. The retaining bracket 53z can also be fixed to the partition 3z by other means, such as screwing. More preferably, the retaining bracket 53z is integrally formed with the partition 3z. Preferably, the retaining bracket 53z further has a gap 531z through which a user can use a screwdriver or other simple tool to remove the second seal 52z arranged in the guide slot 310z. It can be understood that the first seal 51z is arranged on the outer wall 1111z of the open end 111z of the housing 11z and the second seal 52z is arranged in the guide slot 310z of the partition 3z, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0138] As shown in FIG. 2B, when the filter bottle device has three openings, the filter bottle 1z further comprises a first fluid channel 1121z and a second fluid channel 1122z, and the extension 112z of the housing 11z has a lower end 1120z, and the first fluid channel 1121z and the second fluid channel 1122z of the filter bottle 1z are arranged at the lower end 1120z of the filter bottle 1z, respectively, wherein the first fluid channel 1121z is formed in the central region 11201z of the lower end 1120z, and the second fluid channel 1122z is formed in the edge region 11202z extending outward from the central region 11201z of the lower end 1120z. As can be understood, the filter core 12z can be a reverse osmosis membrane filter core or a three-port ultrafiltration membrane filter core. When the filter core 12z is a reverse osmosis membrane filter core, the water cavity 120z is separated into a first water cavity 1201z and a second water cavity 1202z by the filter core 12z, wherein the first water cavity 1201z is in communication with the through cavity 320z, and the second water cavity 1202z is in communication with the second fluid channel 1122z, the water inlet end of the filter core 12z is in communication with the first water cavity 1201z (or the through cavity 320z), the sewage outlet end of the filter core 12z is in communication with the second water cavity 1202z, and the purified water outlet of the filter core 12z is sealingly connected to the first fluid channel 1121z. Taking the through channel 330z as the inflow channel of raw water, the first fluid channel 1121z as the outflow channel of purified water, and the second fluid channel 1122z as the outflow channel of sewage as an example, raw water flows in from the through channel 330z, flows into the water inlet end of the filter core 12z through the through cavity 320z, and the purified water purified by the filter core 12z is discharged from the purified water outlet and then flows out through the first fluid channel 1121z, and sewage flows into the second water cavity 1202z through the sewage outlet end of the filter core 12z and then is discharged through the second fluid channel 1122z. As can be understood, the through channel 330z, the first fluid channel 1121z, and the second fluid channel 1122z can be threaded openings or quick-connect interfaces as needed. As shown in FIG. 2C, when the filter bottle 1z is a two-port filter bottle (the filter bottle 1z no longer has the second fluid channel 1122z), and the through cavity 320z of the partition piece 3z is in communication with the through channel 330z and the water cavity 120z, respectively, raw water can flow from the through channel 330z to the water cavity 120z, and the purified water purified by the filter core 12z can flow out from the purified water outlet of the inner channel 1203z of the filter core 12z and the first fluid channel 1121z.As shown in FIG. 2D of the drawings, when the through channel 330z of the partition 3z and the filter element 12z (or the opening of the filter element 12z) are connected, raw water can flow from the first fluid channel 1121z into the water cavity 120z and flow to the filter element 12z, and the purified water obtained after purification by the filter element 12z flows out from the through channel 330z. At this time, the sealing between the partition 3z and the filter element 12z can be achieved by arranging a sealing member between the through channel 330z and the filter element 12z. Accordingly, as shown in FIGS. 2A to 3E of the drawings, the partition 3z of the filter bottle device is arranged in such a way that no water sealing mechanism is required between the partition 3z and the filter bottle cap 2z, so that the partition 3z is easy to be driven to rotate relative to the filter bottle cap 2z.

[0139] As shown in FIGS. 2A to 3E of the drawings, the filter bottle device further comprises a limiting member 9z, and the partition 3z further comprises a limiting portion 34z, wherein the limiting portion 34z extends outward from the through portion 33z, and the limiting member 9z is arranged between the limiting portion 34z and the opening portion 21z of the filter bottle cap 2z, so that the filter bottle cap 2z and the partition 3z cannot translate relative to each other and can rotate relative to each other with small resistance. When the filter bottle cap 2z is unscrewed (or unscrewed) from the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, since the partition 3z is limited by the limiting member 9z in the opening portion 21z of the filter bottle cap 2z, and the torque of the frictional force (driving force) applied by the limiting member 9z and the opening portion 21z of the filter bottle cap 2z to the rotation of the partition 3z is much smaller than the torque of the resistance force of the relative rotation of the first sealing member 51z between the sealing portion 1114z of the opening end 111z of the filter bottle 1z and the partition 3z, the filter bottle cap 2z cannot basically drive the partition 3z to rotate, and thus the partition 3z basically does not rotate relative to the sealing portion 1114z of the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the sealing portion 1114z of the opening end 111z of the shell 11z of the filter bottle 1z (the partition 3z moves away from the extending portion 112z of the shell 11z). The limiting member 9z is exemplified as a snap spring, but can also be a nut or other limiting means, for example, a nut can be fixed to the limiting portion 34z of the partition 3z.

[0140] Fig. 4A to Fig. 5C show an alternative embodiment of the filter bottle device according to the first embodiment of the present application, which comprises a filter bottle 1z, a filter cartridge 12z, a filter bottle cap 2zA and a partition 3zA, wherein the filter bottle 1z comprises a housing 11z, the partition 3zA comprises a high end 31z and a low end 32z extending outwardly and downwardly from the high end 31z, the housing 11z comprises an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z with a mounting opening 1101z formed at the open end 111z of the housing 11z, the filter cartridge 12z is arranged in the receiving cavity 110z, wherein the filter bottle cap 2zA is adapted to be detachably connected to the outer sidewall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3zA extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2zA, and the partition 3zA is arranged to be rotatable relative to the filter bottle cap 2zA. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3zA extends upwardly and inwardly obliquely from the low end 32z to the inner side of the filter bottle cap 2zA. Preferably, the filter cartridge 12z and the housing 11z form a water cavity 120z therebetween. Preferably, the high end 31z of the partition 3zA is arranged between the filter bottle cap 2zA and the filter cartridge 12z, the low end 32z of the partition 3zA is arranged between the inner sidewall 24z of the filter bottle cap 2zA and the outer wall 1111z of the open end 111z of the housing 11z, and when the filter bottle cap 2zA is connected to the connecting portion 113z of the housing 11z such that the filter bottle cap 2zA abuts against the partition 3zA, the filter bottle cap 2zA is capable of driving the partition 3zA to move relative to the open end 111z of the housing 11z of the filter bottle 1z, in particular, when the filter bottle cap 2zA is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zA is in physical contact with the partition 3zA, the filter bottle cap 2zA is capable of driving the partition 3zA to move relative to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the high end 31z has a thickness greater than that of the low end 32z, so that the high end 31z has better force resistance performance.

[0141] As shown in FIGS. 4A-5C, the filter bottle device of the present application further comprises at least one first sealing member 51z, wherein the at least one first sealing member 51z is adapted to be arranged between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zA, so that when the filter bottle cap 2zA is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zA is in physical contact with the partition 3zA, the filter bottle cap 2zA can drive the partition 3zA to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3zA through the first sealing member 51z as the inner circumferential wall 321z of the lower end 32z of the partition 3zA moves to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the housing 11z is less than the thickness of the connecting portion 113z of the housing 11z. More preferably, the total thickness of the open end 111z of the housing 11z and the lower end 32z of the partition 3zA is substantially the same as the thickness of the connecting portion 113z of the housing 11z, so as to facilitate the connection and sealing between the filter bottle cap 2zA and the filter bottle 1z. Those skilled in the art can know that the at least one first sealing member 51z can be considered as a separate element, or as a part of the inner circumferential wall 321z of the lower end 32z of the partition 3zA, or as a part of the outer wall 1111z of the open end 111z of the housing 11z, and the arrangement of the at least one first sealing member 51z shall not limit the protection scope of the filter bottle device of the present application. It can be understood that the at least one first sealing member 51z is pressed between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zA to ensure the sealing between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zA and to ensure that appropriate friction can be generated between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zA.In other words, when the user fastens the filter bottle cap 2zA to the connecting portion 113z of the shell 11z, the filter bottle cap 2zA can press against the partition 3zA to drive the partition 3zA to move relative to the open end 111z of the shell 11z of the filter bottle 1z and achieve the sealing between the open end 111z of the shell 11z of the filter bottle 1z and the lower end 32z of the partition 3zA through the first sealing member 51z. When the user rotates the filter bottle 1z to fasten the filter bottle 1z to the filter bottle cap 2zA, the movement of the filter bottle 1z is not affected by the partition 3zA before the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zA. When the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zA, the partition 3zA can rotate with the filter bottle 1z under the driving of the filter bottle 1z and the friction between the inner circumferential wall 321z of the lower end 32z of the partition 3zA and the open end 111z of the shell 11z of the filter bottle 1z, so that the filter bottle 1z gradually approaches the upper end 31z of the partition 3zA or even presses against the upper end 31z of the partition 3zA with the rotation of the filter bottle 1z. At this time, since the partition 3zA can rotate with the filter bottle 1z under the driving of the filter bottle 1z during the installation of the filter bottle 1z, the installation of the filter bottle 1z is basically not hindered by the friction between the partition 3zA and the filter bottle 1z and the filter bottle 1z is easier to be installed. Those skilled in the art can know that the fastening connection between the filter bottle cap 2zA and the filter bottle 1z of the filter bottle device of the present application refers to the appropriate connection between the filter bottle cap 2zA and the filter bottle 1z through a certain connection mode, so that the filter bottle cap 2zA and the filter bottle 1z are firmly connected, so that the filter bottle cap 2zA can press and drive the partition 3zA to move relative to the open end 111z of the shell 11z of the filter bottle 1z or even further press against the open end 111z of the shell 11z. Those skilled in the art can know that the connection between the filter bottle cap 2zA and the filter bottle 1z of the filter bottle device of the present application can be achieved in many ways, for example, through threaded connection, rotating buckle connection or clamp connection, or other appropriate ways to achieve detachable connection. The filter bottle 1z, the filter bottle cap 2zA, the partition 3zA and the first sealing member 51z of the filter bottle device of the present application have many benefits.Firstly, when the user fastens the filter bottle cap 2zA to the connecting portion 113z of the shell 11z of the filter bottle 1z, the filter bottle cap 2zA rotates and moves towards the extending portion 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cap 2zA can press and drive the partition 3zA to move towards the extending portion 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the lower end 32z of the partition 3zA (for example, the friction generated by the first seal 51z), the friction of the filter bottle cap 2zA on the partition 3zA will be difficult to drive the partition 3zA to rotate synchronously. Therefore, the partition 3zA does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby substantially eliminating the obstruction of the large-size seal to the relative rotation of the filter bottle cap 2zA and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cap 2zA and the filter bottle 1z. It can be understood that when the user fastens the shell 11z of the filter bottle 1z to the filter bottle cap 2zA by rotating the filter bottle 1z, and when the opening end 111z of the shell 11z of the filter bottle 1z moves to the inner peripheral wall 321z of the lower end 32z of the partition 3zA, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the lower end 32z of the partition 3zA, the partition 3zA will rotate under the drive of the filter bottle 1z, the filter bottle 1z is driven to move towards the high end 31z of the partition 3zA, and even abuts against the high end 31z of the partition 3zA. The arrangement of the filter bottle 1z, the filter bottle cap 2zA, the partition 3zA and the first seal 51z of the filter bottle device of the present application can enable the operator or user to tighten the filter bottle cap 2zA without applying a large force, but only need to rotate to a predetermined position to ensure that the inner peripheral wall 321z of the lower end 32z of the partition 3zA tightly presses the first seal 51z against the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, so that the relative rotation (during tightening) between the filter bottle cap 2zA and the filter bottle 1z of the filter bottle device of the present application is not substantially obstructed by the large-size seal, and is easy to rotate. Accordingly, when the filter bottle cap 2zA is rotated away (or unscrewed) from the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, it is also relatively easy.In other words, the present application creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2zA and the filter bottle 1z as independent and separated as possible, and to make the filter bottle cap 2zA and the filter bottle 1z more easily screwed and unscrewed by using the partition piece 3zA to replace the filter bottle cap 2zA to undertake the "sealing" function. In addition, since the partition piece 3zA can not rotate relative to the filter bottle 1z, the first sealing piece 51z is less likely to be twisted, and the risk of sealing failure and water leakage can be reduced. Secondly, when the water pressure acts on the inside of the filter bottle 1z of the filter bottle device of the present application, the water pressure can be used to support the bottle wall of the filter bottle 1z transversely (radially) from the inside of the filter bottle 1z to obtain a more stable structure. At this time, due to the external action of the filter bottle cap 2zA and the internal pressure action of the water pressure in the filter bottle 1z, the opening end 111z of the filter bottle 1z can have better roundness and expand outward to further press the first sealing piece 51z, so that the sealing between the partition piece 3zA and the filter bottle 1z is better. Thirdly, the better sealing between the partition piece 3zA and the filter bottle 1z also allows manufacturers or users to choose a sealing piece with a smaller compression amount compared to the traditional sealing method, so that the sealing piece can be used multiple times without being replaced each time the filter core is replaced. The first sealing piece 51z with a smaller compression amount also makes the relative translation between the partition piece 3zA and the filter bottle 1z less obstructed, which is beneficial to further reduce the difficulty of screwing and unscrewing the filter bottle cap 2zA and the filter bottle 1z. Finally, the arrangement of the filter bottle 1z, the filter bottle cap 2zA, the partition piece 3zA and the first sealing piece 51z of the filter bottle device of the present application further overcomes the defect that the first sealing piece 51z is arranged between the inner wall of the opening end 111z of the housing 11z and the outer wall of the partition piece 3zA. When the first sealing piece 51z is arranged between the inner wall of the opening end 111z of the housing 11z and the outer wall of the partition piece 3zA, since the water pressure in the filter bottle 1z is from inside to outside, when the inner wall of the filter bottle 1z is stressed, the housing 11z of the filter bottle 1z expands outward, which may cause the first sealing piece 51z arranged between the inner wall of the opening end 111z of the housing 11z and the outer wall of the partition piece 3zA to loosen and cause the sealing between the inner wall of the opening end 111z and the outer wall of the partition piece 3zA to be damaged.

[0142] As shown in FIGS. 4A to 5C, the filter bottle device of the present application further comprises a metal ring 60z, wherein the metal ring 60z is arranged on the outer circumferential wall 322z of the lower end 32z of the partition 3zA. It can be understood that the metal ring 60z arranged on the outer circumferential wall 322z of the lower end 32z of the partition 3zA can reduce the deformation or expansion of the lower end 32z of the partition 3zA under pressure, improve the sealing between the lower end 32z of the partition 3zA and the open end 111z of the housing 11z of the filter bottle 1z, and prevent the lower end 32z of the partition 3zA from breaking when the pressure is too large. In addition, the surface of the metal ring 60z is smoother, which can further reduce the friction between the outer circumferential wall 322z of the lower end 32z of the partition 3zA and the filter bottle cap 2zA. Finally, the metal ring 60z can also help maintain the roundness of the lower end 32z of the partition 3zA. Those skilled in the art can understand that the metal ring 60z of the filter bottle device of the present application should have appropriate strength. For example, the metal ring 60z of the filter bottle device of the present application can be made of stainless steel or silicon steel material.

[0143] As shown in FIGS. 4A-5C of the drawings, the filter bottle cover 2zA of the filter bottle device of the present application comprises an opening portion 21z, a mounting portion 22z extending from the opening portion 21z, and a lead-through portion 23zA extending from the opening portion 21z, the high end 31z of the partition 3zA forms a through opening 340zA, wherein the lead-through portion 23zA and the opening portion 21z form a lead-through channel 230zA extending from the opening portion 21z to the lead-through portion 23zA, wherein the lead-through portion 23zA penetrates out of the through opening 340zA of the high end 31z. Preferably, the inner side of the opening portion 21z of the filter bottle cover 2zA is at least partially in physical contact with the upper side of the high end 31z of the partition 3zA. It can be understood that the lead-through channel 230zA is adapted to communicate with the water cavity 120z (or the water inlet or outlet of the filter element 12z). Further, the mounting portion 22z of the filter bottle cover 2zA of the filter bottle device of the present application is adapted to be fastened to the connecting portion 113z of the housing 11z. It can be understood that when the housing 11z of the filter bottle 1z is fastened to the filter bottle cover 2zA, due to the frictional force between the opening end 111z of the housing 11z of the filter bottle 1z and the low end 32z of the partition 3zA, the partition 3zA will rotate relative to the filter bottle cover 2zA with the lead-through portion 23zA as the rotation axis under the driving of the filter bottle 1z; when the filter bottle cover 2zA is fastened to the housing 11z of the filter bottle 1z, due to the frictional force between the opening end 111z of the housing 11z of the filter bottle 1z and the low end 32z of the partition 3zA, the filter bottle cover 2zA will rotate relative to the partition 3zA with the lead-through portion 23zA as the rotation axis.

[0144] As shown in FIGS. 4A to 5C of the drawings, preferably, the inner diameter D1 of the through opening 340zA of the high end 31z of the partition 3zA of the filter bottle device of the present application is smaller than the inner diameter D2 of the low end 32z, so that the partition 3zA can be driven to rotate relative to the filter bottle cap 2zA with the through portion 23zA as the rotation axis. In other words, since the through portion 23zA of the filter bottle cap 2zA of the filter bottle device of the present application is inserted into the through opening 340zA of the high end 31z, and the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zA of the high end 31z, when the user rotates the filter bottle 1z to mount the filter bottle 1z to the filter bottle cap 2zA, since the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zA of the high end 31z, the torque generated by the friction between the low end 32z of the partition 3zA and the filter bottle 1z will be greater than the torque generated by the friction between the high end 31z of the partition 3zA and the through portion 23zA of the filter bottle cap 2zA, so that the partition 3zA is easily driven to rotate by the filter bottle 1z and the filter bottle 1z only experiences a very small resistance during the mounting process and the filter bottle 1z is easily mounted to the filter bottle cap 2zA; when the user rotates the filter bottle 1z to dismount the filter bottle 1z from the filter bottle cap 2zA, since the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zA of the high end 31z, the torque generated by the friction between the low end 32z of the partition 3zA and the filter bottle 1z will be greater than the torque generated by the friction between the high end 31z of the partition 3zA and the through portion 23zA of the filter bottle cap 2zA, so that the partition 3zA is easily driven to rotate by the filter bottle 1z and the filter bottle 1z only experiences a very small resistance during the dismounting process and the filter bottle 1z is easily dismounted from the filter bottle cap 2zA. Preferably, the mounting portion 22z of the filter bottle cap 2zA is arranged around the through portion 23zA. It is worth noting that, in order to ensure that the torque generated by the friction between the low end 32z of the partition 3zA and the filter bottle 1z is greater than the torque generated by the friction between the high end 31z of the partition 3zA and the through portion 23zA of the filter bottle cap 2zA, so that the mounting and dismounting of the filter bottle 1z are more smooth and easy, the ratio of the inner diameter D2 of the low end 32z to the inner diameter D1 of the through opening 340zA of the high end 31z should be not less than 5 / 4, so that the inner diameter D2 of the low end 32z is sufficiently larger than the inner diameter D1 of the through opening 340zA of the high end 31z. As shown in FIGS. 4A to 5C of the drawings, preferably, the through portion 23zA extends along the axial direction.Correspondingly, in order to ensure that the inner diameter of the conducting channel 230zA is large enough, the ratio of the inner diameter D2 of the low end 32z to the inner diameter D1 of the through opening 340zA of the high end 31z should not be greater than 6 / 1.

[0145] As shown in FIGS. 4A-5C, preferably, the high end 31z of the partition 3zA of the filter bottle device of the present application extends upwardly and inwardly from the low end 32z, so that the angle a between the high end 31z and the low end 32z is obtuse, to improve the force resistance of the partition 3zA and prevent the deformation of the partition 3zA. Correspondingly, the high end 31z of the partition 3zA is arranged between the filter bottle cap 2zA and the low end 32z of the partition 3zA. Preferably, the angle a formed by the low end 32z and the high end 31z is greater than 90 degrees and less than 135 degrees. More preferably, the low end 32z forms a cylindrical or trumpet-shaped accommodating space 3201z, so that the low end 32z of the partition 3zA of the filter bottle device of the present application is cylindrical or trumpet-shaped, so that the filter core 12z can be inserted into the cylindrical or trumpet-shaped accommodating space 3201z formed by the low end 32z and the height dimension of the entire filter bottle 1z is as small as possible and the improved filter bottle device can be installed in existing water treatment equipment.

[0146] As shown in FIGS. 4A-5C, preferably, the partition 3zA of the filter bottle device of the present application further comprises a set of reinforcing ribs 35z, wherein the reinforcing ribs 35z are arranged on the inner wall of the high end 31z along the extension direction of the high end 31z. It can be understood that the reinforcing ribs 35z of the partition 3zA can strengthen the strength of the high end 31z and the entire partition 3zA, to prevent the deformation of the high end 31z under stress, thereby helping to maintain the roundness of the low end 32z of the partition 3zA.

[0147] As shown in FIGS. 4A-5C, preferably, the through portion 23zA of the filter bottle cap 2zA and the high end 31z of the partition 3zA are sealed. The filter bottle device of the present application further comprises a center seal 54z, wherein the center seal 54z is arranged between the through opening 340zA of the high end 31z of the partition 3zA and the opening inner wall 3401zA of the through opening 340zA of the high end 31z of the partition 3zA to ensure the sealing between the through portion 23zA of the filter bottle cap 2zA and the high end 31z of the partition 3zA. It is worth noting that since the center seal 54z is arranged between the through portion 23zA of the filter bottle cap 2zA and the opening inner wall 3401zA of the through opening 340zA of the high end 31z of the partition 3zA, the driving force torque of the center seal 54z is less than the torque generated by the resistance of the first seal 51z (and the second seal 52z), so that the driving force of the center seal 54z is basically impossible to drive the partition 3zA to rotate relative to the filter bottle 1z when the filter bottle cap 2zA is rotated to be mounted to the filter bottle 1z.

[0148] As shown in FIGS. 4A-5C, the filter bottle device of the present application further has a constraint 4z, wherein the constraint 4z is at least partially arranged below the high end 31z of the partition 3zA, and the constraint 4z is fixedly connected to the through portion 23zA. Since the constraint 4z is fixedly connected to the through portion 23zA, the constraint 4z can be considered as a part of the through portion 23zA or formed from the through portion 23zA. Preferably, the constraint 4z can be arranged integrally formed with the through portion 23zA. More preferably, the high end 31z of the partition 3zA is partially arranged between the top of the filter bottle cap 2zA and the constraint 4z. Accordingly, the constraint 4z can be used to constrain the partition 3zA and prevent the partition 3zA from being separated from the filter bottle cap 2zA.

[0149] As shown in FIGS. 4A-5C of the drawings, the restraining member 4z of the filter bottle device of the present application comprises a fixing portion 41z and a restraining portion 42z, wherein the restraining portion 42z and the fixing portion 41z of the restraining member 4z are respectively arranged at the high end 31z of the partition member 3zA and the lead-through portion 23zA of the filter bottle cap 2zA for restraining the partition member 3zA and preventing the partition member 3zA from being separated from the filter bottle cap 2zA. As shown in FIGS. 4A-5C of the drawings, the fixing portion 41z of the restraining member 4z of the filter bottle device of the present application is connected to the lead-through portion 23zA, and the restraining portion 42z extends from the fixing portion 41z to the high end 31z of the partition member 3zA for restraining the partition member 3zA. Preferably, the restraining member 4z is provided with a communication channel 40z, wherein the communication channel 40z is formed in the fixing portion 41z, and the communication channel 40z is in communication with the lead-through channel 230zA. Preferably, the lead-through channel 230zA passes through the communication channel 40z.

[0150] As shown in FIGS. 4A-5C of the drawings, preferably, the center seal 54z is restrained between the high end 31z of the partition member 3zA and the lead-through portion 23zA of the filter bottle cap 2zA. Preferably, the fixing portion 41z of the restraining member 4z is arranged on the lead-through portion 23zA by screwing. It can be understood that the connecting structure between the fixing portion 41z and the lead-through portion 23zA includes but is not limited to welding, screwing, threaded connection, snap connection, interference fit, etc., and even an additional connecting member can be used to connect the two.

[0151] As shown in FIGS. 4A-5C of the drawings, the mounting portion 22z of the filter bottle cap 2zA and the low end 32z of the partition member 3zA of the filter bottle device of the present application form an adaptation gap 2201z therebetween, wherein the adaptation gap 2201z has an appropriate size. Preferably, the width D3 of the adaptation gap 2201z is between 1-2 mm. If the adaptation gap 2201z between the mounting portion 22z of the filter bottle cap 2zA and the low end 32z of the partition member 3zA is too large, when the water pressure in the filter bottle 1z of the filter bottle device of the present application presses the opening end 111z and drives the low end 32z of the partition member 3zA to expand outward, the low end 32z of the partition member 3zA may have been broken before the filter bottle cap 2zA is bound to the low end 32z of the partition member 3zA, and if the adaptation gap 2201z between the mounting portion 22z of the filter bottle cap 2zA and the low end 32z of the partition member 3zA is too small, the mounting between the mounting portion 22z of the filter bottle cap 2zA and the low end 32z of the partition member 3zA may be hindered.

[0152] As shown in FIGS. 4A-5C, the open end 111z of the housing 11z of the filter bottle device of the present application comprises a main portion 1113z and a sealing portion 1114z extending outwardly from the main portion 1113z, wherein the first sealing member 51z is disposed between the sealing portion 1114z of the open end 111z and the inner peripheral wall 321z of the lower end 32z of the partition 3zA. Preferably, the lower end 32z is cylindrical or flared along its extension direction, so that the partition 3zA is more easily compressed and moved relative to the open end 111z of the housing 11z and more easily gradually achieves the sealing between the sealing portion 1114z of the open end 111z and the lower end 32z of the partition 3zA when being pressed and driven by the filter bottle cap 2zA. Alternatively, the lower end 32z is cylindrical or flared along its extension direction. Accordingly, the partition 3zA is more easily moved away from the sealing portion 1114z of the open end 111z when the filter bottle cap 2zA is removed.

[0153] As shown in FIGS. 4A-5C, the high end 31z of the partition 3zA of the filter bottle device of the present application forms a guide groove 310z, wherein the guide groove 310z is arranged adjacent to the low end 32z of the partition 3zA and opposite to the open end 111z of the shell 11z, and the top end 1115z of the open end 111z of the shell 11z is arranged to be placed in the guide groove 310z (the inner diameter of the top end 1115z of the open end 111z is slightly larger than the outer diameter of the guide groove 310z). Accordingly, the guide groove 310z of the high end 31z can guide the top end 1115z of the open end 111z of the shell 11z into the guide groove 310z and, when the filter bottle cap 2zA presses and drives the partition 3zA to move relative to the open end 111z of the shell 11z of the filter bottle 1z, guide and help the low end 32z of the partition 3zA to press against the outer wall 1111z of the open end 111z of the shell 11z (for example, by the first sealing member 51z pressing against the outer wall 1111z of the open end 111z of the shell 11z). It can be understood that the guide groove 310z, the open end 111z of the shell 11z, the first sealing member 51z and the inner peripheral wall 321z of the low end 32z of the partition 3zA cooperate with each other, so that the guide groove 310z and the inner peripheral wall 321z of the low end 32z of the partition 3zA better wrap the first sealing member 51z. It can be understood that, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32z of the partition 3zA to deform outwardly, the guide groove 310z can cause the inner peripheral wall 321z of the low end 32z of the partition 3zA to always press the first sealing member 51z and deform outwardly synchronously with the open end 111z of the shell 11z (because, due to the positioning effect of the guide groove 310z, when the inner peripheral wall 321z of the low end 32z of the partition 3zA deforms excessively outwardly under water pressure, the guide groove 310z will press against the inner wall 1112z of the open end 111z of the shell 11z, so that the inner peripheral wall 321z of the low end 32z of the partition 3zA cannot deform excessively outwardly), that is, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32z of the partition 3zA to deform outwardly, the first sealing member 51z is always pressed by the inner peripheral wall 321z of the low end 32z of the partition 3zA to maintain the seal between the inner peripheral wall 321z of the low end 32z of the partition 3zA and the open end 111z of the shell 11z.When the water pressure inside the filter bottle 1z drops and causes the open end 111z of the shell 11z to deform inward, the open end 111z of the shell 11z presses against the guide groove 310z inward, so that the guide groove 310z further pulls the inner circumferential wall 321z of the low end 32z of the partition piece 3zA to deform inward, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3zA always presses the first sealing piece 51z and deforms inward synchronously with the open end 111z of the shell 11z.

[0154] As shown in FIGS. 4A-5C of the drawings, preferably, the filter bottle device of the present application further comprises at least one second sealing piece 52z, wherein the second sealing piece 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. The second sealing piece 52z makes the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z flexibly connected. In particular, the shell 11z and the partition piece 3zA are usually made of plastic material, which causes the product to be prone to deformation after injection molding. The flexible connection reduces the higher production precision requirement for the inner diameter of the top end 1115z of the open end 111z to match the outer diameter of the guide groove 310z. Those skilled in the art can know that the arrangement of the at least one second sealing piece 52z is basically the same as that of the at least one first sealing piece 51z, which can be arranged as an independent element or can be regarded as part of the inner wall 1112z of the open end 111z of the shell 11z or the groove wall 3101z of the guide groove 310z.

[0155] Notably, the second seal 52z further improves the sealing between the low end 32z of the partition 3zA and the open end 111z of the shell 11z by at least two sealing effects. First, the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z, which itself strengthens the sealing between the low end 32z of the partition 3zA and the open end 111z of the shell 11z. Second, when water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to between the low end 32z of the partition 3zA and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3zA to deform outward, at which time the low end 32z of the partition 3zA moves outward, driving the groove wall 3101z of the guide groove 310z to move outward, driving the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.Therefore, when the water pressure in the filter bottle 1z is low, the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z can realize the sealing between the open end 111z of the shell 11z and the partition piece 3zA; when the water pressure in the filter bottle 1z is high, the open end 111z of the shell 11z of the filter bottle 1z expands outward under the water pressure, and the first seal 51z tightly seals the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zA and the outer wall 1111z of the open end 111z of the shell 11z under the clamping action of the low end 32z of the partition piece 3zA; when the water pressure in the filter bottle 1z is high, when the water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zA and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition piece 3zA to deform outward, and the water pressure will deform the first seal 51z, drive the low end 32z of the partition piece 3zA to move outward, and drive the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby realizing the self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z. It can be understood that when the user or the operator unscrews the filter bottle cap 2zA, the restraining part 42z of the restraining piece 4z presses against the partition piece 3zA, and the restraining part 42z of the restraining piece 4z can press and drive the partition piece 3zA to move relative to the open end 111z of the shell 11z of the filter bottle 1z and move away from the extension 112z of the shell 11z, and the restraining part 42z of the restraining piece 4z (or the filter bottle cap 2zA) rotates relative to the partition piece 3zA, at this time, the torque of the frictional force exerted on the partition piece 3zA by the central seal 54z and the restraining part 42z of the restraining piece 4z is smaller than the torque of the frictional force exerted on the partition piece 3zA by the first seal 51z and the second seal 52z, therefore, when the user or the operator unscrews the filter bottle cap 2zA, the partition piece 3zA basically does not rotate, but only translates relative to the shell 11z.

[0156] As shown in FIGS. 4A-5C, the filter bottle device of the present application further comprises a retaining bracket 53z, wherein the retaining bracket 53z is fixed between the high end 31z of the partition 3zA and the filter core 12z, wherein the retaining bracket 53z is at least partially arranged opposite to the guide slot 310z to retain the second seal 52z at least partially within the guide slot 310z. Preferably, the retaining bracket 53z is arranged below the high end 31z of the partition 3zA and is surrounded by the inner wall 1112z of the open end 111z of the housing 11z. Preferably, the retaining bracket 53z can be fixed to the partition 3zA by welding, or can be fixed to the partition 3zA by other means such as screwing. More preferably, the retaining bracket 53z is integrally formed with the partition 3zA. Preferably, the retaining bracket 53z further has a notch 531z through which a user can use a simple tool such as a screwdriver to remove the second seal 52z arranged in the guide slot 310z. It can be understood that the first seal 51z is arranged on the outer wall 1111z of the open end 111z of the housing 11z and the second seal 52z is arranged in the guide slot 310z of the partition 3zA, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0157] As shown in FIGS. 4A-5C, when the filter bottle device has three openings, the filter bottle 1z further comprises a first fluid passage 1121z and a second fluid passage 1122z, and the extension 112z of the housing 11z has a lower end 1120z, and the first fluid passage 1121z and the second fluid passage 1122z of the filter bottle 1z are arranged at the lower end 1120z of the filter bottle 1z, respectively, wherein the first fluid passage 1121z is formed in a central region 11201z of the lower end 1120z, and the second fluid passage 1122z is formed in an edge region 11202z extending outward from the central region 11201z of the lower end 1120z. As can be understood, the filter core 12z can be a reverse osmosis membrane filter core or a three-port ultrafiltration membrane filter core. When the filter core 12z is a reverse osmosis membrane filter core, the water cavity 120z is separated into a first water cavity 1201z and a second water cavity 1202z by the filter core 12z, wherein the first water cavity 1201z is in communication with the through passage 230zA, and the second water cavity 1202z is in communication with the second fluid passage 1122z, the water inlet end of the filter core 12z is in communication with the first water cavity 1201z (or the through passage 230zA), the sewage outlet end of the filter core 12z is in communication with the second water cavity 1202z, and the purified water outlet of the inner flow channel 1203z of the filter core 12z is sealingly connected to the first fluid passage 1121z. Taking the through passage 230zA as the inflow passage of raw water, the first fluid passage 1121z as the outflow passage of purified water, and the second fluid passage 1122z as the outflow passage of sewage as an example, raw water flows into the through passage 230zA, flows into the water inlet end of the filter core 12z through the first water cavity 1201z, and the purified water purified by the filter core 12z is discharged from the purified water outlet and then flows out through the first fluid passage 1121z, and sewage flows into the second water cavity 1202z through the sewage outlet end of the filter core 12z and then flows out through the second fluid passage 1122z. As can be understood, the through passage 230zA (or the opening portion 21z), the first fluid passage 1121z, and the second fluid passage 1122z can form threaded openings or quick-connect interfaces as needed. As shown in FIG. 4B, when the filter bottle 1z is a two-port filter bottle (i.e., the filter bottle 1z no longer has the second fluid passage 1122z), when the through passage 230zA is in communication with the water cavity 120z, raw water can flow from the through passage 230zA to the water cavity 120z, and the purified water purified by the filter core 12z can flow out from the purified water outlet of the filter core 12z and the first fluid passage 1121z.It can be understood that when the through channel 230zA and the filter element 12z (or the opening of the filter element 12z) are communicated, raw water can flow from the first fluid channel 1121z to the water cavity 120z and to the filter element 12z, and after being purified by the filter element 12z, the purified water flows out from the through channel 230zA.

[0158] Referring to FIGS. 6A-7G of the drawings, a filter bottle device according to a second embodiment of the present application is illustrated, which comprises a filter bottle 1z, a filter core 12z, a filter bottle cap 2zB and a partition 3zB, wherein the filter bottle 1z comprises a housing 11z, the partition 3zB comprises a high end 31z and a low end 32z, the housing 11z comprises an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z with a mounting opening 1101z formed at the open end 111z of the housing 11z, the filter core 12z is disposed in the receiving cavity 110z, wherein the filter bottle cap 2zB is adapted to be detachably connected to the outer sidewall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3zB extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2zB, wherein the partition 3zB is disposed to be rotatable relative to the filter bottle cap 2zB. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3zB extends upwardly and inwardly obliquely from the low end 32z to the inner side of the filter bottle cap 2zB. Preferably, the filter core 12z and the housing 11z form a water cavity 120z therebetween. Preferably, the high end 31z of the partition 3zB is disposed between the filter bottle cap 2zB and the filter core 12z, the low end 32z of the partition 3zB is disposed between the inner sidewall 24z of the filter bottle cap 2zB and the outer wall 1111z of the open end 111z of the housing 11z, wherein the filter bottle cap 2zB is capable of driving the partition 3zB to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zB is connected to the connecting portion 113z of the housing 11z such that the filter bottle cap 2zB abuts against the partition 3zB, in particular, the filter bottle cap 2zB is capable of driving the partition 3zB to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zB is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zB is in physical contact with the partition 3zB. Preferably, the high end 31z has a thickness greater than that of the low end 32z, so that the high end 31z has better force resistance performance.

[0159] As shown in FIGS. 6A-7G, the filter bottle device of the present application further comprises at least one first sealing member 51z, wherein the at least one first sealing member 51z is adapted to be arranged between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zB, so that when the filter bottle cap 2zB is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zB is in physical contact with the partition 3zB, the filter bottle cap 2zB can drive the partition 3zB to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3zB through the first sealing member 51z as the inner circumferential wall 321z of the lower end 32z of the partition 3zB moves to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the housing 11z is less than the thickness of the connecting portion 113z of the housing 11z. More preferably, the total thickness of the open end 111z of the housing 11z and the lower end 32z of the partition 3zB is substantially the same as the thickness of the connecting portion 113z of the housing 11z, so as to facilitate the connection and sealing between the filter bottle cap 2zB and the filter bottle 1z. Those skilled in the art can know that the at least one first sealing member 51z can be considered as a separate element, or as a part of the inner circumferential wall 321z of the lower end 32z of the partition 3zB, or as a part of the outer wall 1111z of the open end 111z of the housing 11z, and the arrangement of the at least one first sealing member 51z shall not limit the protection scope of the filter bottle device of the present application. It can be understood that the at least one first sealing member 51z is pressed between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zB to ensure the sealing between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zB and to ensure that appropriate friction can be generated between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zB.In other words, when the user fastens the filter bottle cap 2zB to the connecting portion 113z of the shell 11z, the filter bottle cap 2zB can press against the partition 3zB to drive the partition 3zB to move relative to the open end 111z of the shell 11z of the filter bottle 1z and achieve the sealing between the open end 111z of the shell 11z of the filter bottle 1z and the lower end 32z of the partition 3zB through the first sealing member 51z. When the user rotates the filter bottle 1z to fasten the filter bottle 1z to the filter bottle cap 2zB, the movement of the filter bottle 1z is not affected by the partition 3zB before the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zB. When the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zB, the partition 3zB can rotate with the filter bottle 1z under the friction between the inner circumferential wall 321z of the lower end 32z of the partition 3zB and the open end 111z of the shell 11z of the filter bottle 1z driven by the filter bottle 1z, so that the filter bottle 1z gradually approaches the upper end 31z of the partition 3zB or even presses against the upper end 31z of the partition 3zB with the rotation of the filter bottle 1z. At this time, since the partition 3zB can rotate with the filter bottle 1z driven by the filter bottle 1z during the installation of the filter bottle 1z, the installation of the filter bottle 1z is basically not hindered by the friction between the partition 3zB and the filter bottle 1z and the filter bottle 1z is easier to be installed. Those skilled in the art can know that the fastening connection between the filter bottle cap 2zB and the filter bottle 1z of the filter bottle device of the present application refers to the appropriate connection between the filter bottle cap 2zB and the filter bottle 1z of the filter bottle device of the present application through a certain connection mode, so that the filter bottle cap 2zB and the filter bottle 1z are firmly connected, so that the filter bottle cap 2zB can press and drive the partition 3zB to move relative to the open end 111z of the shell 11z of the filter bottle 1z or even further press against the open end 111z of the shell 11z. Those skilled in the art can know that the connection between the filter bottle cap 2zB and the filter bottle 1z of the filter bottle device of the present application can be achieved in various ways, for example, through threaded connection, rotating buckle connection, or other appropriate ways to achieve detachable connection. Alternatively, as shown in FIGS. 6B-7A, the filter bottle cap 2zB and the filter bottle 1z of the filter bottle device can be connected through threaded connection. Alternatively, as shown in FIGS. 7E-7G, the filter bottle cap 2zB and the filter bottle 1z of the filter bottle device can also be connected through rotating buckle connection.

[0160] The filter bottle 1z, the filter bottle cover 2zB, the partition piece 3zB and the first sealing piece 51z of the filter bottle device have the following advantages. First, when the user fastens the filter bottle cover 2zB to the connecting part 113z of the shell 11z of the filter bottle 1z, the filter bottle cover 2zB rotates and moves towards the extending part 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cover 2zB can press and drive the partition piece 3zB to move towards the extending part 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zB (for example, the friction generated by the first sealing piece 51z), the friction of the filter bottle cover 2zB on the partition piece 3zB will be difficult to drive the partition piece 3zB to rotate synchronously. Therefore, the partition piece 3zB basically does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby basically eliminating the obstruction of the large-size sealing piece to the relative rotation of the filter bottle cover 2zB and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cover 2zB and the filter bottle 1z. It can be understood that when the user fastens the shell 11z of the filter bottle 1z to the filter bottle cover 2zB by rotating the filter bottle 1z, and when the opening end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition piece 3zB, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zB, the partition piece 3zB will rotate under the drive of the filter bottle 1z, the filter bottle 1z is driven to move towards the high end 31z of the partition piece 3zB, and even abuts against the high end 31z of the partition piece 3zB. The arrangement of the filter bottle 1z, the filter bottle cover 2zB, the partition piece 3zB and the first sealing piece 51z of the filter bottle device can enable the operator or user to tighten the filter bottle cover 2zB without applying too much force, but only need to rotate to a preset position to ensure that the inner circumferential wall 321z of the low end 32z of the partition piece 3zB tightly presses the first sealing piece 51z against the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z. Therefore, the relative rotation (during tightening) between the filter bottle cover 2zB and the filter bottle 1z of the filter bottle device is basically not hindered by the large-size sealing piece, and is easy to rotate.Accordingly, when the filter bottle cap 2zB is unscrewed (or screwed off) from the outer wall 1111z of the open end 111z of the shell 11z of the filter bottle 1z, it is also relatively easy. In other words, the present application creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2zB and the filter bottle 1z as independent and separate from each other as possible, and to replace the filter bottle cap 2zB with the partition piece 3zB to bear the "sealing" function, so that the filter bottle cap 2zB and the filter bottle 1z are easier to screw and unscrew. In addition, since the partition piece 3zB can not rotate relative to the filter bottle 1z, the first sealing piece 51z is less likely to be twisted, which can reduce the risk of sealing failure and water leakage. Secondly, when the water pressure acts on the inside of the filter bottle 1z of the filter bottle device of the present application, the water pressure can be used to support the bottle wall of the filter bottle 1z transversely (radially) from the inside of the filter bottle 1z to obtain a structure with stronger stability. At this time, due to the external action of the filter bottle cap 2zB and the internal pressure action of the water pressure in the filter bottle 1z, the open end 111z of the filter bottle 1z can have better roundness and expand outward to further press the first sealing piece 51z, so that the sealing between the partition piece 3zB and the filter bottle 1z is better. Thirdly, the better sealing between the partition piece 3zB and the filter bottle 1z also allows manufacturers or users to choose a sealing piece with a smaller compression amount compared to the traditional sealing method, so that the sealing piece can be used multiple times without replacing the sealing piece every time the filter core is replaced. The first sealing piece 51z with smaller compression amount also makes the relative translation between the partition piece 3zB and the filter bottle 1z less obstructed, which is beneficial to further reduce the difficulty of screwing and unscrewing the filter bottle cap 2zB and the filter bottle 1z. Finally, the arrangement of the filter bottle 1z, the filter bottle cap 2zB, the partition piece 3zB and the first sealing piece 51z of the filter bottle device of the present application further overcomes the defect that the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zB. When the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zB, since the water pressure in the filter bottle 1z is from inside to outside, when the inner wall of the filter bottle 1z is stressed, the shell 11z of the filter bottle 1z expands outward, which may cause the first sealing piece 51z arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zB to loosen and cause the sealing between the inner wall of the open end 111z and the outer wall of the partition piece 3zB to be damaged.

[0161] As shown in FIGS. 6A to 7G of the accompanying drawings, the filter bottle device of the present application further comprises a metal ring 60z, wherein the metal ring 60z is arranged on the outer circumferential wall 322z of the lower end 32z of the partition 3zB. It can be understood that the metal ring 60z arranged on the outer circumferential wall 322z of the lower end 32z of the partition 3zB can reduce the deformation or expansion of the lower end 32z of the partition 3zB after being pressed, improve the sealing between the lower end 32z of the partition 3zB and the open end 111z of the housing 11z of the filter bottle 1z, and prevent the lower end 32z of the partition 3zB from being broken when being pressed too much. In addition, the surface of the metal ring 60z is smoother, which can further reduce the friction between the outer circumferential wall 322z of the lower end 32z of the partition 3zB and the filter bottle cap 2zB. Finally, the metal ring 60z can also help to maintain the roundness of the lower end 32z of the partition 3zB. Those skilled in the art can understand that the metal ring 60z of the filter bottle device of the present application should have appropriate strength. For example, the metal ring 60z of the filter bottle device of the present application can be made of stainless steel or silicon steel material.

[0162] As shown in FIGS. 6A-7G of the accompanying drawings, the filter bottle cover 2zB of the filter bottle device of the present application comprises an opening portion 21z, a mounting portion 22z extending from the opening portion 21z, and a lead-through portion 23zB extending from the opening portion 21z, the high end 31z of the partition 3zB forms a through opening 340zB, wherein the lead-through portion 23zB and the opening portion 21z form a first lead-through channel 2301zB extending from the opening portion 21z to the lead-through portion 23zB and a second lead-through channel 2302zB extending from the opening portion 21z to the lead-through portion 23zB, wherein the lead-through portion 23zB penetrates out of the through opening 340zB of the high end 31z of the partition 3zB, that is, the first lead-through channel 2301zB and the second lead-through channel 2302zB penetrate out of the through opening 340zB of the high end 31z of the partition 3zB. Preferably, the inner side of the opening portion 21z of the filter bottle cover 2zB is at least partially in physical contact with the upper side of the high end 31z of the partition 3zB. It can be understood that the first lead-through channel 2301zB is in communication with the water cavity 120z (or the water inlet of the filter element 12z), and the second lead-through channel 2302zB is in communication with the inner flow channel 1203z of the filter element 12z (or the water outlet of the filter element 12z); or, the first lead-through channel 2301zB is in communication with the inner flow channel 1203z of the filter element 12z (or the water outlet of the filter element 12z), and the second lead-through channel 2302zB is in communication with the water cavity 120z (or the water inlet of the filter element 12z). Further, the mounting portion 22z of the filter bottle cover 2zB of the filter bottle device of the present application is adapted to be fastened and connected to the connecting portion 113z of the shell 11z. It can be understood that when the shell 11z of the filter bottle 1z is fastened and connected to the filter bottle cover 2zB, due to the frictional force between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3zB, the partition 3zB will rotate relative to the filter bottle cover 2zB with the lead-through portion 23zB as the rotation axis under the driving of the filter bottle 1z; when the filter bottle cover 2zB is fastened and connected to the shell 11z of the filter bottle 1z, due to the frictional force between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3zB, the filter bottle cover 2zB will rotate relative to the partition 3zB with the lead-through portion 23zB as the rotation axis.As shown in FIGS. 6A to 7G, preferably, the partition 3zB and the filter 12z of the present filter bottle device form a communicating flow passage 3011z therebetween, wherein the communicating flow passage 3011z is in communication with the first conducting passage 2301zB and the water cavity 120z respectively, and the second conducting passage 2302zB is in communication with the inner flow passage 1203z of the filter 12z (or the communicating flow passage 3011z is in communication with the second conducting passage 2302zB and the water cavity 120z respectively, and the first conducting passage 2301zB is in communication with the inner flow passage 1203z of the filter 12z).

[0163] As shown in FIGS. 6A to 7G, the conducting portion 23zB of the filter bottle cap 2zB of the present filter bottle device further forms a first passage forming portion 231B and a second passage forming portion 232B, wherein the first conducting passage 2301zB is formed between the first passage forming portion 231B and the second passage forming portion 232B, and the second conducting passage 2302zB is formed inside the second passage forming portion 232B. Preferably, the second passage forming portion 232B is water-tightly arranged in the filter 12z, so that the second passage forming portion 232B can water-tightly separate the first conducting passage 2301zB (and the communicating flow passage 3011z) from the second conducting passage 2302zB.

[0164] As shown in FIGS. 6A to 7G, preferably, the filter bottle cap 2zB of the present filter bottle device further forms a contact portion 27z, wherein the contact portion 27z extends between the mounting portion 22z and the conducting portion 23zB, and the contact portion 27z is arranged to be adapted to at least partially contact above the high end 31z of the partition 3zB. More preferably, the contact portion 27z extends upwardly and inwardly from the mounting portion 22z to the conducting portion 23zB, so that the contact portion 27z and the high end 31z of the partition 3zB can form a larger physical contact area.

[0165] As shown in FIGS. 6A-7G, preferably, the through portion 23zB of the filter bottle cap 2zB and the high end 31z of the partition 3zB of the filter bottle device of the present application are sealed. The filter bottle device of the present application further comprises a center seal 54z, wherein the center seal 54z is arranged between the through opening 340zB of the high end 31z of the partition 3zB and the opening inner wall 3401zB of the through opening 340zB of the high end 31z of the partition 3zB to ensure the sealing between the through portion 23zB of the filter bottle cap 2zB and the high end 31z of the partition 3zB. It is worth noting that since the center seal 54z is arranged between the through portion 23zB of the filter bottle cap 2zB and the opening inner wall 3401zB of the through opening 340zB of the high end 31z of the partition 3zB, the driving torque of the center seal 54z is less than the torque generated by the resistance of the first seal 51z (and the second seal 52z), so the driving force of the center seal 54z is basically impossible to drive the partition 3zB to rotate relative to the filter bottle 1z. Those skilled in the art know that the second seal 52z is arranged in substantially the same way as the at least one first seal 51z, which can be arranged as an independent element or can be considered as part of the inner wall 1112z of the open end 111z of the housing 11z or the groove wall 3101z of the guide groove 310z. The center seal 54z also has a similar arrangement.

[0166] As shown in FIGS. 6A to 7G of the accompanying drawings, preferably, the inner diameter D1 of the through opening 340zB of the high end 31z of the partition 3zB of the filter bottle device of the present application is smaller than the inner diameter D2 of the low end 32z, so that the partition 3zB can be driven to rotate relative to the filter bottle cap 2zB with the through portion 23zB as the rotation axis. In other words, since the through portion 23zB of the filter bottle cap 2zB of the filter bottle device of the present application is inserted into the through opening 340zB of the high end 31z, and the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zB of the high end 31z, when the user rotates the filter bottle 1z to mount the filter bottle 1z to the filter bottle cap 2zB, since the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zB of the high end 31z, the torque generated by the frictional force between the low end 32z of the partition 3zB and the filter bottle 1z will be greater than the torque generated by the frictional force between the high end 31z of the partition 3zB and the through portion 23zB of the filter bottle cap 2zB, so that the partition 3zB is easily driven to rotate by the filter bottle 1z and the filter bottle 1z only experiences a small resistance during the mounting process and the filter bottle 1z is easily mounted to the filter bottle cap 2zB; when the user rotates the filter bottle 1z to detach the filter bottle 1z from the filter bottle cap 2zB, since the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zB of the high end 31z, the torque generated by the frictional force between the low end 32z of the partition 3zB and the filter bottle 1z will be greater than the torque generated by the frictional force between the high end 31z of the partition 3zB and the through portion 23zB of the filter bottle cap 2zB, so that the partition 3zB is easily driven to rotate by the filter bottle 1z and the filter bottle 1z only experiences a small resistance during the detaching process and the filter bottle 1z is easily detached from the filter bottle cap 2zB. Preferably, the mounting portion 22z of the filter bottle cap 2zB is arranged around the through portion 23zB. It is worth noting that in order to ensure that the torque generated by the frictional force between the low end 32z of the partition 3zB and the filter bottle 1z is greater than the torque generated by the frictional force between the high end 31z of the partition 3zB and the through portion 23zB of the filter bottle cap 2zB, so that the mounting and detaching of the filter bottle 1z are more smooth and easy, the ratio of the inner diameter D2 of the low end 32z to the inner diameter D1 of the through opening 340zB of the high end 31z should be not less than 5 / 4, so that the inner diameter D2 of the low end 32z is sufficiently larger than the inner diameter D1 of the through opening 340zB of the high end 31z.

[0167] As shown in FIGS. 6A-7G, preferably, the conducting portion 23zB extends along the axial direction. Accordingly, in order to ensure that the inner diameters of the first conducting passage 2301zB and the second conducting passage 2302zB are large enough, the ratio of the inner diameter D2 of the low end 32z to the inner diameter D1 of the through opening 340zB of the high end 31z should not be greater than 6 / 1.

[0168] As shown in FIGS. 6A-7G, preferably, the high end 31z of the partition 3zB of the filter bottle device of the present application extends upwardly and inwardly from the low end 32z, so that the angle a between the high end 31z and the low end 32z is obtuse, to improve the force resistance of the partition 3zB and prevent the partition 3zB from deforming. Accordingly, the high end 31z of the partition 3zB is arranged between the filter bottle cap 2zB and the low end 32z of the partition 3zB. Preferably, the angle a formed by the low end 32z and the high end 31z is greater than 90 degrees and less than 135 degrees. In addition, the angle a between the high end 31z and the low end 32z is obtuse, allowing the low end 32z to form a cylindrical or trumpet-shaped accommodating space 3201z. Accordingly, the low end 32z of the partition 3zB of the filter bottle device of the present application is cylindrical or trumpet-shaped, so that the filter cartridge 12z can be inserted into the cylindrical or trumpet-shaped accommodating space 3201z formed by the low end 32z, thereby minimizing the height of the entire filter bottle 1z and ensuring that the improved filter bottle device can be installed in existing water treatment equipment.

[0169] As shown in FIGS. 6A-7G, preferably, the partition 3zB of the filter bottle device of the present application further comprises a set of reinforcing ribs 35z, wherein the reinforcing ribs 35z are arranged on the inner wall of the high end 31z along the extension direction of the high end 31z. It can be understood that the reinforcing ribs 35z of the partition 3zB can strengthen the strength of the high end 31z and the entire partition 3zB, to prevent them from deforming under stress, thereby helping to maintain the roundness of the low end 32z of the partition 3zB.

[0170] As shown in FIGS. 6A to 7G of the accompanying drawings, the filter bottle device of the present application further has a restraining member 4z, wherein the restraining member 4z is at least partially arranged below the high end 31z of the partition 3zB, wherein the restraining member 4z is fixedly connected to the through portion 23zB, and the restraining member 4z and the filter core 12z form a first communication channel 401z therebetween, wherein the first communication channel 401z is in communication with the first through channel 2301zB. Since the restraining member 4z is fixedly connected to the through portion 23zB, the restraining member 4z can be regarded as a part of or formed from the through portion 23zB, and the first communication channel 401z can be regarded as a part of the first through channel 2301zB. Preferably, the restraining member 4z can be integrally formed with the through portion 23zB. More preferably, the high end 31z of the partition 3zB is partially arranged between the top of the filter bottle cap 2zB and the restraining member 4z. Accordingly, the restraining member 4z can be used to restrain the partition 3zB and prevent the partition 3zB from being separated from the filter bottle cap 2zB.

[0171] As shown in FIGS. 6A to 7G of the accompanying drawings, more specifically, the restraining member 4z of the filter bottle device of the present application comprises a fixed portion 41z and a restraining portion 42z, wherein the restraining portion 42z and the fixed portion 41z of the restraining member 4z are arranged at the high end 31z of the partition 3zB and the through portion 23zB of the filter bottle cap 2zB, respectively, for restraining the partition 3zB and preventing the partition 3zB from being separated from the filter bottle cap 2zB.

[0172] As shown in FIGS. 6A to 7G of the accompanying drawings, the fixed portion 41z of the restraining member 4z of the filter bottle device of the present application is connected to the through portion 23zB, and the restraining portion 42z extends from the fixed portion 41z to the high end 31z of the partition 3zB to restrain the partition 3zB. Preferably, the restraining member 4z is provided with a communication channel 40z, wherein the communication channel 40z is formed in the fixed portion 41z, the communication channel 40z is in communication with the first through channel 2301zB, and preferably, the first through channel 2301zB and the second through channel 2302zB both pass through the communication channel 40z.

[0173] As shown in FIGS. 6A-7G, preferably, the center seal 54z is constrained between the high end 31z of the partition 3zB and the lead-through 23zB of the filter bottle cap 2zB. Preferably, the fixing portion 41z of the constraint 4z is fixed to the lead-through 23zB by screws. It can be understood that the connection structure between the fixing portion 41z and the lead-through 23zB includes but is not limited to welding, screwing, threading, buckling, interference, or the like, or even an additional connecting member can be used to connect the two.

[0174] As shown in FIGS. 6A-7G, the mounting portion 22z of the filter bottle cap 2zB and the low end 32z of the partition 3zB of the filter bottle device of the present application form an adaptation gap 2201z therebetween, wherein the adaptation gap 2201z has an appropriate size. Preferably, the width D3 of the adaptation gap 2201z is between 1-2 mm. If the adaptation gap 2201z between the mounting portion 22z of the filter bottle cap 2zB and the low end 32z of the partition 3zB is too large, when the water pressure in the filter bottle 1z of the filter bottle device of the present application presses the opening end 111z and drives the low end 32z of the partition 3zB to expand outward, the low end 32z of the partition 3zB can be broken before the filter bottle cap 2zB is constrained to the low end 32z of the partition 3zB, and if the adaptation gap 2201z between the mounting portion 22z of the filter bottle cap 2zB and the low end 32z of the partition 3zB is too small, the installation between the mounting portion 22z of the filter bottle cap 2zB and the low end 32z of the partition 3zB can be hindered.

[0175] As shown in FIGS. 6A to 7G of the drawings, the open end 111z of the housing 11z of the filter bottle device of the present application comprises a main portion 1113z and a sealing portion 1114z extending outwardly from the main portion 1113z, wherein the first sealing member 51z is arranged between the sealing portion 1114z of the open end 111z and the inner peripheral wall 321z of the lower end 32z of the partition member 3zB. Preferably, the lower end 32z is cylindrical or flared along its extension direction, so that the partition member 3zB is more easily compressed and moved relative to the open end 111z of the housing 11z and more easily gradually achieves the sealing between the sealing portion 1114z of the open end 111z and the lower end 32z of the partition member 3zB when being pressed and driven by the filter bottle cap 2zB. Alternatively, the lower end 32z is cylindrical or flared along its extension direction. Accordingly, the partition member 3zB is more easily moved away from the sealing portion 1114z of the open end 111z when the filter bottle cap 2zB is removed.

[0176] As shown in FIGS. 6A-7G, the high end 31z of the partition 3zB of the filter bottle device of the present application forms a guide groove 310z, wherein the guide groove 310z is arranged adjacent to the low end 32z of the partition 3zB and opposite to the open end 111z of the shell 11z, and wherein the top end 1115z of the open end 111z of the shell 11z is arranged to be placed in the guide groove 310z (the inner diameter of the top end 1115z of the open end 111z is slightly larger than the outer diameter of the guide groove 310z). Accordingly, the guide groove 310z of the high end 31z can guide the top end 1115z of the open end 111z of the shell 11z into the guide groove 310z and, when the filter bottle cap 2zB presses and drives the partition 3zB to move relative to the open end 111z of the shell 11z of the filter bottle 1z, guide and help the low end 32z of the partition 3zB to press against the outer wall 1111z of the open end 111z of the shell 11z (e.g., through the first sealing member 51z pressing against the outer wall 1111z of the open end 111z of the shell 11z). It can be understood that the guide groove 310z, the open end 111z of the shell 11z, the first sealing member 51z and the inner peripheral wall 321z of the low end 32z of the partition 3zB cooperate with each other, so that the guide groove 310z and the inner peripheral wall 321z of the low end 32z of the partition 3zB better wrap the first sealing member 51z. It can be understood that, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32z of the partition 3zB to deform outwardly, the guide groove 310z can cause the inner peripheral wall 321z of the low end 32z of the partition 3zB to always press the first sealing member 51z and deform outwardly synchronously with the open end 111z of the shell 11z (because, due to the positioning effect of the guide groove 310z, when the inner peripheral wall 321z of the low end 32z of the partition 3zB deforms excessively outwardly under water pressure, the guide groove 310z will press against the inner wall 1112z of the open end 111z of the shell 11z, so that the inner peripheral wall 321z of the low end 32z of the partition 3zB cannot deform excessively outwardly), that is, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32z of the partition 3zB to deform outwardly, the first sealing member 51z is always pressed by the inner peripheral wall 321z of the low end 32z of the partition 3zB to maintain the seal between the inner peripheral wall 321z of the low end 32z of the partition 3zB and the open end 111z of the shell 11z.When the water pressure inside the filter bottle 1z drops and the open end 111z of the shell 11z deforms inwardly, the open end 111z of the shell 11z presses against the guide groove 310z inwardly, so that the guide groove 310z further pulls the inner circumferential wall 321z of the low end 32z of the partition piece 3zB to deform inwardly, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3zB always presses the first sealing piece 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0177] As shown in FIGS. 6A-7G of the drawings, preferably, the filter bottle device of the present application further comprises at least one second sealing piece 52z, wherein the second sealing piece 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. The second sealing piece 52z makes the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z flexibly connected. In particular, the shell 11z and the partition piece 3zB are usually made of plastic material, which causes the product to be prone to deformation after injection molding. The flexible connection reduces the higher production precision requirement for the inner diameter of the top end 1115z of the open end 111z to match the outer diameter of the guide groove 310z. Those skilled in the art can know that the arrangement of the at least one second sealing piece 52z is basically the same as that of the at least one first sealing piece 51z, which can be arranged as an independent element or can be regarded as a part of the inner wall 1112z of the open end 111z of the shell 11z or the groove wall 3101z of the guide groove 310z.

[0178] Notably, the second seal 52z further improves the sealing between the low end 32z of the partition 3zB and the open end 111z of the shell 11z by at least two sealing effects. First, the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z, which itself strengthens the sealing between the low end 32z of the partition 3zB and the open end 111z of the shell 11z. Second, when water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to between the low end 32z of the partition 3zB and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3zB to deform outward, at which time the low end 32z of the partition 3zB moves outward, driving the groove wall 3101z of the guide groove 310z to move outward, driving the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.Therefore, when the water pressure in the filter bottle 1z is low, the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z can realize the sealing between the open end 111z of the shell 11z and the partition piece 3zB; when the water pressure in the filter bottle 1z is high, the open end 111z of the shell 11z of the filter bottle 1z expands outward under the water pressure, and the first seal 51z tightly seals the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zB and the outer wall 1111z of the open end 111z of the shell 11z under the clamping action of the low end 32z of the partition piece 3zB; when the water pressure in the filter bottle 1z is high, when the water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zB and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition piece 3zB to deform outward, and the water pressure will deform the first seal 51z, drive the low end 32z of the partition piece 3zB to move outward, and drive the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby realizing the self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z. It can be understood that when the user or the operator unscrews the filter bottle cap 2zB, the restraining part 42z of the restraining piece 4z presses against the partition piece 3zB, and the restraining part 42z of the restraining piece 4z can press and drive the partition piece 3zB to move relative to the open end 111z of the shell 11z of the filter bottle 1z and move away from the extension 112z of the shell 11z, and the restraining part 42z (or the filter bottle cap 2zB) of the restraining piece 4z and the partition piece 3zB rotate relative to each other, at this time, the torque of the frictional force exerted on the partition piece 3zB by the central seal 54z and the restraining part 42z of the restraining piece 4z is smaller than the torque of the frictional force exerted on the partition piece 3zB by the first seal 51z and the second seal 52z, therefore, when the user or the operator unscrews the filter bottle cap 2zB, the partition piece 3zB basically does not rotate, but only translates relative to the shell 11z.

[0179] As shown in FIGS. 6A-7G, the filter bottle device of the present application further comprises a retaining bracket 53z, wherein the retaining bracket 53z is fixed between the high end 31z of the partition 3zB and the filter core 12z, wherein the retaining bracket 53z is at least partially arranged opposite to the guide slot 310z to retain the second seal 52z at least partially within the guide slot 310z. Preferably, the retaining bracket 53z is arranged below the high end 31z of the partition 3zB and is surrounded by the inner wall 1112z of the open end 111z of the housing 11z. Preferably, the retaining bracket 53z can be fixed to the partition 3zB by welding, or can be fixed to the partition 3zB by other means such as screwing. More preferably, the retaining bracket 53z is integrally formed with the partition 3zA. Preferably, the retaining bracket 53z further has a notch 531z through which a user can use a simple tool such as a screwdriver to remove the second seal 52z arranged in the guide slot 310z. It can be understood that the first seal 51z is arranged on the outer wall 1111z of the open end 111z of the housing 11z and the second seal 52z is arranged in the guide slot 310z of the partition 3zB, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0180] Referring to FIGS. 8A-9C of the drawings, a filter bottle device according to a third embodiment of the present application is illustrated, which includes a filter bottle 1z, a filter core 12z, a filter bottle cap 2zE and a partition 3zE, wherein the filter bottle 1z includes a housing 11z, the partition 3zE includes a high end 31z and a low end 32z, the housing 11z includes an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z with a mounting opening 1101z formed at the open end 111z of the housing 11z, the filter core 12z is disposed in the receiving cavity 110z, wherein the filter bottle cap 2zE is adapted to be detachably connected to an outer sidewall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3zE extends upwardly and inwardly from the low end 32z to an inner side of the filter bottle cap 2zE, wherein the partition 3zE is disposed to be rotatable relative to the filter bottle cap 2zE. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3zE extends upwardly and inwardly obliquely from the low end 32z to the inner side of the filter bottle cap 2zE. Preferably, the filter core 12z and the housing 11z form a water cavity 120z therebetween. Preferably, the high end 31z of the partition 3zE is disposed between the filter bottle cap 2zE and the filter core 12z, the low end 32z of the partition 3zE is disposed between an inner sidewall 24z of the filter bottle cap 2zE and an outer wall 1111z of the open end 111z of the housing 11z, wherein the filter bottle cap 2zE is capable of driving the partition 3zE to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zE is connected to the connecting portion 113z of the housing 11z such that the filter bottle cap 2zE presses against the partition 3zE, in particular, the filter bottle cap 2zE is capable of driving the partition 3zE to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zE is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zE is in physical contact with the partition 3zE. Preferably, the high end 31z has a thickness greater than that of the low end 32z, such that the high end 31z has better force resistance performance.

[0181] As shown in FIGS. 8A-9C, the filter bottle device of the present application further comprises at least one first sealing member 51z, wherein the at least one first sealing member 51z is adapted to be arranged between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zE, so that when the filter bottle cap 2zE is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zE is in physical contact with the partition 3zE, the filter bottle cap 2zE can drive the partition 3zE to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3zE through the first sealing member 51z as the inner circumferential wall 321z of the lower end 32z of the partition 3zE moves to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the housing 11z is less than the thickness of the connecting portion 113z of the housing 11z. More preferably, the total thickness of the open end 111z of the housing 11z and the lower end 32z of the partition 3zE is substantially the same as the thickness of the connecting portion 113z of the housing 11z, so as to facilitate the connection and sealing between the filter bottle cap 2zE and the filter bottle 1z. It is understood by those skilled in the art that the at least one first sealing member 51z can be considered as a separate element, as part of the inner circumferential wall 321z of the lower end 32z of the partition 3zE, or as part of the outer wall 1111z of the open end 111z of the housing 11z, and the arrangement of the at least one first sealing member 51z shall not limit the protection scope of the filter bottle device of the present application. It is understood that the at least one first sealing member 51z is pressed between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zE to ensure the sealing between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zE and to ensure that appropriate friction can be generated between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zE. In other words, when the filter bottle cap 2zE is tightly connected to the connecting portion 113z of the housing 11z, the filter bottle cap 2zE can press against the partition 3zE to drive the partition 3zE to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3zE through the first sealing member 51z.When the user rotates the filter bottle 1z to fasten the filter bottle 1z to the filter bottle cap 2zE, the movement of the filter bottle 1z is not affected by the partition 3zE before the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition 3zE; when the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition 3zE, the partition 3zE is driven by the filter bottle 1z and rotates with the filter bottle 1z under the friction between the inner circumferential wall 321z of the low end 32z of the partition 3zE and the open end 111z of the shell 11z of the filter bottle 1z, so that the filter bottle 1z gradually approaches the high end 31z of the partition 3zE and even presses against the high end 31z of the partition 3zE with the rotation of the filter bottle 1z; at this time, since the partition 3zE can rotate with the filter bottle 1z under the drive of the filter bottle 1z during the installation of the filter bottle 1z, the installation of the filter bottle 1z is basically not hindered by the friction between the partition 3zE and the filter bottle 1z and the filter bottle 1z is easier to be installed.

[0182] As can be appreciated by those skilled in the art, the fastening connection between the filter bottle cap 2zE and the filter bottle 1z of the filter bottle device of the present application refers to the appropriate connection between the filter bottle cap 2zE and the filter bottle 1z through a certain connection mode, so that the filter bottle cap 2zE is firmly connected with the filter bottle 1z, so that the filter bottle cap 2zE can press and drive the partition 3zE to move relative to the open end 111z of the shell 11z of the filter bottle 1z, and even further press against the open end 111z of the shell 11z. As can be appreciated by those skilled in the art, the connection between the filter bottle cap 2zE and the filter bottle 1z of the filter bottle device of the present application can be achieved in various ways, for example, through threaded connection, rotating buckle connection, or other appropriate ways to achieve detachable connection.

[0183] The filter bottle 1z, the filter bottle cover 2zE, the partition piece 3zE and the first sealing piece 51z of the filter bottle device have the following advantages. First, when the user fastens the filter bottle cover 2zE to the connecting part 113z of the shell 11z of the filter bottle 1z, the filter bottle cover 2zE rotates and moves towards the extension part 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cover 2zE can press and drive the partition piece 3zE to move towards the extension part 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zE (for example, the friction generated by the first sealing piece 51z), the friction of the filter bottle cover 2zE on the partition piece 3zE will be difficult to drive the partition piece 3zE to rotate synchronously. Therefore, the partition piece 3zE basically does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby basically eliminating the obstruction of the large-size sealing piece to the relative rotation of the filter bottle cover 2zE and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cover 2zE and the filter bottle 1z. It can be understood that when the user fastens the shell 11z of the filter bottle 1z to the filter bottle cover 2zE by rotating the filter bottle 1z, and when the opening end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition piece 3zE, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zE, the partition piece 3zE will rotate under the drive of the filter bottle 1z, the filter bottle 1z is driven to move towards the high end 31z of the partition piece 3zE, and even abuts against the high end 31z of the partition piece 3zE. The arrangement of the filter bottle 1z, the filter bottle cover 2zE, the partition piece 3zE and the first sealing piece 51z of the filter bottle device can make the operator or user not need to tighten the filter bottle cover 2zE with great force when tightening the filter bottle cover 2zE, but only need to rotate to a preset position to ensure that the inner circumferential wall 321z of the low end 32z of the partition piece 3zE can press the first sealing piece 51z against the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z. Therefore, the relative rotation (during tightening) between the filter bottle cover 2zE and the filter bottle 1z of the filter bottle device is basically not hindered by the large-size sealing piece, and is easy to rotate.Accordingly, when the filter bottle cap 2zE is unscrewed (or screwed off) from the outer wall 1111z of the open end 111z of the shell 11z of the filter bottle 1z, it is also relatively easy. In other words, the present application creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2zE and the filter bottle 1z as independent and separate from each other as possible, and to replace the filter bottle cap 2zE with the partition piece 3zE to undertake the "sealing" function, so that the filter bottle cap 2zE and the filter bottle 1z are easier to screw on and unscrew. In addition, since the partition piece 3zE can not rotate relative to the filter bottle 1z, the first sealing piece 51z is less likely to be twisted, which can reduce the risk of sealing failure and water leakage. Secondly, when the water pressure acts on the inside of the filter bottle 1z of the filter bottle device of the present application, the water pressure can be used to support the bottle wall of the filter bottle 1z transversely (radially) from the inside of the filter bottle 1z to obtain a structure with stronger stability. At this time, due to the external action of the filter bottle cap 2zE and the internal pressure action of the water pressure in the filter bottle 1z, the open end 111z of the filter bottle 1z can have better roundness and expand outward to further press the first sealing piece 51z, so that the sealing between the partition piece 3zE and the filter bottle 1z is better. Thirdly, the better sealing between the partition piece 3zE and the filter bottle 1z also allows manufacturers or users to choose a sealing piece with a smaller compression amount compared to the traditional sealing method, so that the sealing piece can be used multiple times without the need to replace the sealing piece every time the filter element is replaced. The first sealing piece 51z with smaller compression amount also makes the relative translation between the partition piece 3zE and the filter bottle 1z less obstructed, which is conducive to further reducing the difficulty of screwing on and unscrewing the filter bottle cap 2zE and the filter bottle 1z. Finally, the arrangement of the filter bottle 1z, the filter bottle cap 2zE, the partition piece 3zE and the first sealing piece 51z of the filter bottle device of the present application further overcomes the defect that the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zE. When the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zE, since the water pressure in the filter bottle 1z is from inside to outside, when the inner wall of the filter bottle 1z is stressed, the shell 11z of the filter bottle 1z expands outward, which may cause the first sealing piece 51z arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zE to loosen and cause the sealing between the inner wall of the open end 111z and the outer wall of the partition piece 3zE to be damaged.

[0184] As shown in FIGS. 8A to 9C of the accompanying drawings, the filter bottle device of the present application further comprises a metal ring 60z, wherein the metal ring 60z is arranged on the outer circumferential wall 322z of the lower end 32z of the partition 3zE. It can be understood that the metal ring 60z arranged on the outer circumferential wall 322z of the lower end 32z of the partition 3zE can reduce the deformation or expansion of the lower end 32z of the partition 3zE after being pressed, improve the sealing between the lower end 32z of the partition 3zE and the open end 111z of the housing 11z of the filter bottle 1z, and prevent the lower end 32z of the partition 3zE from being broken when being pressed too much. In addition, the surface of the metal ring 60z is smoother, which can further reduce the friction between the outer circumferential wall 322z of the lower end 32z of the partition 3zE and the filter bottle cap 2zE. Finally, the metal ring 60z can also help to maintain the roundness of the lower end 32z of the partition 3zE. Those skilled in the art can understand that the metal ring 60z of the filter bottle device of the present application should have appropriate strength. For example, the metal ring 60z of the filter bottle device of the present application can be made of stainless steel or silicon steel material.

[0185] As shown in FIGS. 8A to 9C of the accompanying drawings, the filter bottle cap 2zE of the filter bottle device of the present application comprises an opening portion 21z, a mounting portion 22z extending from the opening portion 21z, a lead-through portion 23zE extending from the opening portion 21z, a first channel forming portion 25zE and a second channel forming portion 26zE, the high end 31z of the partition 3zE forms a through opening 340zE, wherein the lead-through portion 23zE extends out of the through opening 340zE of the high end 31z, wherein the first channel forming portion 25zE is surrounded by the opening portion 21z, the second channel forming portion 26zE is surrounded by the first channel forming portion 25zE, and the first channel forming portion 25zE and the opening portion 21z form a first channel 2101zE therebetween, the first channel forming portion 25zE and the second channel forming portion 26zE form a second channel 2102zE therebetween, the second channel forming portion 26zE forms a third channel 2103zE, wherein the first channel 2101zE, the second channel 2102zE and the third channel 2103zE are separated from each other by the first channel forming portion 25zE and the second channel forming portion 26zE. Further, the mounting portion 22z of the filter bottle cap 2zE of the filter bottle device of the present application is adapted to be fastened to the connecting portion 113z of the housing 11z. Preferably, the first channel forming portion 25zE and the second channel forming portion 26zE are respectively arranged in the filter element 12z in a water-tight manner, so that the first channel forming portion 25zE can separate the first channel 2101zE and the second channel 2102zE in a water-tight manner, and the second channel forming portion 26zE can separate the second channel 2102zE and the third channel 2103zE in a water-tight manner. Preferably, the inner side of the opening portion 21z of the filter bottle cap 2zE is at least partially in physical contact with the upper side of the high end 31z of the partition 3zE.

[0186] As known to those skilled in the art, the filter core 12z can be a reverse osmosis membrane filter core or a three-port ultrafiltration membrane filter core, wherein the first channel 2101zE is adapted to communicate with the water cavity 120z (or the water inlet 121z of the filter core 12z), the second channel 2102zE is adapted to communicate with the water outlet 122z of the filter core 12z, and the third channel 2103zE is adapted to communicate with the blowdown port 123z of the filter core 12z. Illustratively, when the filter core 12z is a reverse osmosis membrane filter core, the water cavity 120z is separated by the filter core 12z into a first water cavity 1201z and a second water cavity 1202z, wherein the first water cavity 1201z communicates with the first channel 2101zE, the water inlet 121z of the filter core 12z communicates with the first water cavity 1201z, the water outlet 122z of the filter core 12z communicates with the second channel 2102zE, the second water cavity 1202z respectively communicates with the blowdown end 125z of the filter core 12z and the blowdown lower end 1241z of the central blowdown pipe 124z of the filter core 12z, the blowdown upper end 1242z of the central blowdown pipe 124z of the filter core 12z forms the blowdown port 123z of the filter core 12z, and the blowdown port 123z of the filter core 12z communicates with the third channel 2103zE. Raw water flows in from the first channel 2101zE, passes through the first water cavity 1201z, flows into the water inlet 121z of the filter core 12z, and purified water purified by the filter core 12z flows out from the water outlet 122z of the filter core 12z, then flows out through the second channel 2102zE, and wastewater flows into the second water cavity 1202z through the blowdown end 125z of the filter core 12z, then flows through the blowdown lower end 1241z and the blowdown upper end 1242z (the blowdown port 123z of the filter core 12z) of the central blowdown pipe 124z, and finally flows into the third channel 2103zE for discharge.

[0187] It can be understood that when the shell 11z of the filter bottle 1z is fastened and connected to the filter bottle cap 2zE, due to the frictional force between the open end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zE, the partition piece 3zE will rotate relative to the filter bottle cap 2zE with the through portion 23zE as the rotation axis under the driving of the filter bottle 1z; when the filter bottle cap 2zE is fastened and connected to the shell 11z of the filter bottle 1z, due to the frictional force between the open end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zE, the filter bottle cap 2zE will rotate relative to the partition piece 3zE with the through portion 23zE as the rotation axis.

[0188] As shown in FIGS. 8A to 9C of the accompanying drawings, preferably, the partition 3zE and the filter element 12z of the filter bottle device of the present application form a communicating flow passage 3011z therebetween, wherein the communicating flow passage 3011z is in communication with the first passage 2101zE and the water cavity 120z, respectively.

[0189] As shown in FIGS. 8A to 9C of the accompanying drawings, preferably, the filter bottle cover 2zE of the filter bottle device of the present application further forms a contact portion 27z, wherein the contact portion 27z extends between the mounting portion 22z and the lead-through portion 23zE, and wherein the contact portion 27z is arranged to at least partially contact over the high end 31z of the partition 3zE. More preferably, the contact portion 27z extends upwardly and inwardly from the mounting portion 22z to the lead-through portion 23zE, so as to form a larger physical contact area between the contact portion 27z and the high end 31z of the partition 3zE.

[0190] As shown in FIGS. 8A to 9C of the accompanying drawings, preferably, the lead-through portion 23zE of the filter bottle cover 2zE and the high end 31z of the partition 3zE of the filter bottle device of the present application are sealed. The filter bottle device of the present application further comprises a central sealing member 54z, wherein the central sealing member 54z is arranged between the lead-through portion 23zE of the filter bottle cover 2zE and the opening inner wall 3401zE of the through opening 340zE of the high end 31z of the partition 3zE, so as to ensure the sealing between the lead-through portion 23zE of the filter bottle cover 2zE and the high end 31z of the partition 3zE. It is worth noting that, since the central sealing member 54z is arranged between the lead-through portion 23zE of the filter bottle cover 2zE and the opening inner wall 3401zE of the through opening 340zE of the high end 31z of the partition 3zE, the driving torque of the central sealing member 54z is smaller than the torque generated by the resistance of the first sealing member 51z (and the second sealing member 52z), so that the driving force of the central sealing member 54z is substantially impossible to drive the partition 3zE to rotate relative to the filter bottle 1z. It is known to those skilled in the art that the second sealing member 52z can be arranged in substantially the same manner as the at least one first sealing member 51z, and can be arranged as an independent element or as a part of the inner wall 1112z of the open end 111z of the housing 11z or the groove wall 3101z of the guide groove 310z.

[0191] As shown in FIGS. 8A to 9C of the drawings, preferably, the inner diameter D1 of the through opening 340zE of the high end 31z of the partition 3zE of the filter bottle device of the present application is smaller than the inner diameter D2 of the low end 32z, so that the partition 3zE can be driven to rotate relative to the filter bottle cap 2zE with the through portion 23zE as the rotation axis. In other words, since the through portion 23zE of the filter bottle cap 2zE of the filter bottle device of the present application is inserted into the through opening 340zE of the high end 31z, and the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zE of the high end 31z, when the user rotates the filter bottle 1z to mount the filter bottle 1z to the filter bottle cap 2zE, since the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zE of the high end 31z, the torque generated by the frictional force between the low end 32z of the partition 3zE and the filter bottle 1z will be greater than the torque generated by the frictional force between the high end 31z of the partition 3zE and the through portion 23zE of the filter bottle cap 2zE, so that the partition 3zE is easily driven to rotate by the filter bottle 1z and the filter bottle 1z only experiences a very small resistance during the mounting process and the filter bottle 1z is easily mounted to the filter bottle cap 2zE; when the user rotates the filter bottle 1z to detach the filter bottle 1z from the filter bottle cap 2zE, since the inner diameter D2 of the low end 32z is larger than the inner diameter D1 of the through opening 340zE of the high end 31z, the torque generated by the frictional force between the low end 32z of the partition 3zE and the filter bottle 1z will be greater than the torque generated by the frictional force between the high end 31z of the partition 3zE and the through portion 23zE of the filter bottle cap 2zE, so that the partition 3zE is easily driven to rotate by the filter bottle 1z and the filter bottle 1z only experiences a very small resistance during the detaching process and the filter bottle 1z is easily detached from the filter bottle cap 2zE. Preferably, the mounting portion 22z of the filter bottle cap 2zE is arranged around the through portion 23zE. It is worth noting that in order to ensure that the torque generated by the frictional force between the low end 32z of the partition 3zE and the filter bottle 1z is greater than the torque generated by the frictional force between the high end 31z of the partition 3zE and the through portion 23zE of the filter bottle cap 2zE, so that the mounting and detaching of the filter bottle 1z are more smooth and easy, the ratio of the inner diameter D2 of the low end 32z to the inner diameter D1 of the through opening 340zE of the high end 31z should be not less than 5 / 4, so that the inner diameter D2 of the low end 32z is sufficiently larger than the inner diameter D1 of the through opening 340zE of the high end 31z.

[0192] As shown in FIGS. 8A-9C, preferably, the conducting portion 23zE extends along the axial direction. Accordingly, in order to ensure that the inner diameters of the first channel 2101zE, the second channel 2102zE and the third channel 2103zE are large enough, the ratio of the inner diameter D2 of the low end 32z to the inner diameter D1 of the through opening 340zE of the high end 31z should not be greater than 6 / 1.

[0193] As shown in FIGS. 8A-9C, preferably, the high end 31z of the partition 3zE of the filter bottle device of the present application extends upwardly and inwardly from the low end 32z, so that the angle a between the high end 31z and the low end 32z is obtuse, to improve the force resistance of the partition 3zE and prevent the deformation of the partition 3zE. Accordingly, the high end 31z of the partition 3zE is arranged between the filter bottle cap 2zE and the low end 32z of the partition 3zE. Preferably, the angle a formed by the low end 32z and the high end 31z is greater than 90 degrees and less than 135 degrees. In addition, the angle a between the high end 31z and the low end 32z is obtuse, allowing the low end 32z to form a cylindrical or trumpet-shaped accommodating space 3201z. Accordingly, the low end 32z of the partition 3zE of the filter bottle device of the present application is cylindrical or trumpet-shaped, so that the filter core 12z can be inserted into the cylindrical or trumpet-shaped accommodating space 3201z formed by the low end 32z, thereby minimizing the height of the entire filter bottle 1z and ensuring that the improved filter bottle device can be installed in existing water treatment equipment.

[0194] As shown in FIGS. 8A-9C, preferably, the partition 3zE of the filter bottle device of the present application further comprises a set of reinforcing ribs 35z, wherein the reinforcing ribs 35z are arranged on the inner wall of the high end 31z along the extension direction of the high end 31z. It can be understood that the reinforcing ribs 35z of the partition 3zE can strengthen the strength of the high end 31z and the entire partition 3zE, to prevent them from being deformed under stress, thereby helping to maintain the roundness of the low end 32z of the partition 3zE.

[0195] As shown in FIGS. 8A-9C of the accompanying drawings, the filter bottle device of the present application further has a restraining member 4z, wherein the restraining member 4z is at least partially disposed below the high end 31z of the partition 3zE, wherein the restraining member 4z is fixedly connected to the through portion 23zE, and the restraining member 4z and the filter element 12z form a first communication channel 401z therebetween, wherein the first communication channel 401z is in communication with the first channel 2101zE. Since the restraining member 4z is fixedly connected to the through portion 23zE, the restraining member 4z can be considered as a part of or formed from the through portion 23zE, and the first communication channel 401z can be considered as a part of the first channel 2101zE. Preferably, the restraining member 4z can be integrally formed with the through portion 23zE. More preferably, the high end 31z of the partition 3zE is partially disposed between the top of the filter bottle cap 2zE and the restraining member 4z. Accordingly, the restraining member 4z can be used to restrain the partition 3zE and prevent the partition 3zE from being detached from the filter bottle cap 2zE.

[0196] As shown in FIGS. 8A-9C of the accompanying drawings, more specifically, the restraining member 4z of the filter bottle device of the present application includes a fixed portion 41z and a restraining portion 42z, wherein the restraining portion 42z and the fixed portion 41z of the restraining member 4z are disposed at the high end 31z of the partition 3zE and the through portion 23zE of the filter bottle cap 2zE, respectively, for restraining the partition 3zE and preventing the partition 3zE from being detached from the filter bottle cap 2zE. As shown in FIGS. 8A-9C of the accompanying drawings, the fixed portion 41z of the restraining member 4z of the filter bottle device of the present application is connected to the through portion 23zE, and the restraining portion 42z extends from the fixed portion 41z to the high end 31z of the partition 3zE to restrain the partition 3zE. Preferably, the restraining member 4z is provided with a communication channel 40z, wherein the communication channel 40z is formed in the fixed portion 41z, and the communication channel 40z is in communication with the first channel 2101zE, preferably, the first channel 2101zE, the second channel 2102zE and the third channel 2103zE all pass through the communication channel 40z.

[0197] As shown in FIGS. 8A-9C, preferably, the center seal 54z is constrained between the high end 31z of the partition 3zE and the lead-through 23zE of the filter lid 2zE. Preferably, the fixing portion 41z of the constraint 4z is fixed to the lead-through 23zE by screws. It is understood that the connection between the fixing portion 41z and the lead-through 23zE includes, but is not limited to, welding, screwing, threading, buckling, interference, or the like, or even by an additional connector.

[0198] As shown in FIGS. 8A-9C, the mounting portion 22z of the filter lid 2zE and the low end 32z of the partition 3zE of the filter device of the present application form a fitting gap 2201z therebetween, wherein the fitting gap 2201z has an appropriate size. Preferably, the width D3 of the fitting gap 2201z is between 1-2 mm. If the fitting gap 2201z between the mounting portion 22z of the filter lid 2zE and the low end 32z of the partition 3zE is too large, when the water pressure in the filter 1z of the filter device of the present application presses the opening end 111z and drives the low end 32z of the partition 3zE to expand outward, the low end 32z of the partition 3zE may have been broken before the filter lid 2zE is bound to the low end 32z of the partition 3zE, and if the fitting gap 2201z between the mounting portion 22z of the filter lid 2zE and the low end 32z of the partition 3zE is too small, the installation between the mounting portion 22z of the filter lid 2zE and the low end 32z of the partition 3zE may be hindered.

[0199] As shown in FIGS. 8A to 9C of the drawings, the open end 111z of the housing 11z of the filter bottle device of the present application comprises a main portion 1113z and a sealing portion 1114z extending outwardly from the main portion 1113z, wherein the first sealing member 51z is arranged between the sealing portion 1114z of the open end 111z and the inner peripheral wall 321z of the lower end 32z of the partition 3zE. Preferably, the lower end 32z is cylindrical or flared along its extension direction, so that the partition 3zE is more easily compressed and moved relative to the open end 111z of the housing 11z and more easily gradually achieves the sealing between the sealing portion 1114z of the open end 111z and the lower end 32z of the partition 3zE when being pressed and driven by the filter bottle cap 2zE. Alternatively, the lower end 32z is cylindrical or flared along its extension direction. Accordingly, the partition 3zE is more easily moved away from the sealing portion 1114z of the open end 111z when the filter bottle cap 2zE is removed.

[0200] As shown in FIGS. 8A-9C of the accompanying drawings, the high end 31zE of the partition 3zE of the filter bottle device of the present application forms a guide groove 310z, wherein the guide groove 310z is arranged adjacent to the low end 32zE of the partition 3zE and opposite to the open end 111z of the shell 11z, and the top end 1115z of the open end 111z of the shell 11z is arranged to be placed in the guide groove 310z (the inner diameter of the top end 1115z of the open end 111z is slightly larger than the outer diameter of the guide groove 310z). Accordingly, the guide groove 310z of the high end 31zE can guide the top end 1115z of the open end 111z of the shell 11z into the guide groove 310z and, when the filter bottle cap 2zE presses and drives the partition 3zE to move relative to the open end 111z of the shell 11z of the filter bottle 1z, guide and help the low end 32zE of the partition 3zE to press against the outer wall 1111z of the open end 111z of the shell 11z (for example, by the first sealing member 51z pressing against the outer wall 1111z of the open end 111z of the shell 11z). It can be understood that the guide groove 310z, the open end 111z of the shell 11z, the first sealing member 51z and the inner peripheral wall 321z of the low end 32zE of the partition 3zE cooperate with each other, so that the guide groove 310z and the inner peripheral wall 321z of the low end 32zE of the partition 3zE better wrap the first sealing member 51z. It can be understood that, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32zE of the partition 3zE to deform outwardly, the guide groove 310z can cause the inner peripheral wall 321z of the low end 32zE of the partition 3zE to always press the first sealing member 51z and deform outwardly synchronously with the open end 111z of the shell 11z (because, due to the positioning effect of the guide groove 310z, when the inner peripheral wall 321z of the low end 32zE of the partition 3zE deforms excessively outwardly under water pressure, the guide groove 310z will press against the inner wall 1112z of the open end 111z of the shell 11z, so that the inner peripheral wall 321z of the low end 32zE of the partition 3zE cannot deform excessively outwardly), that is, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32zE of the partition 3zE to deform outwardly, the first sealing member 51z is always pressed by the inner peripheral wall 321z of the low end 32zE of the partition 3zE to maintain the sealing between the inner peripheral wall 321z of the low end 32zE of the partition 3zE and the open end 111z of the shell 11z.When the water pressure inside the filter bottle 1z drops and the open end 111z of the shell 11z deforms inwardly, the open end 111z of the shell 11z presses against the guide groove 310z inwardly, so that the guide groove 310z further pulls the inner circumferential wall 321z of the low end 32z of the partition 3zE to deform inwardly, so that the inner circumferential wall 321z of the low end 32z of the partition 3zE always presses the first seal 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0201] As shown in FIGS. 8A-9C of the drawings, preferably, the filter bottle device of the present application further comprises at least one second seal 52z, wherein the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. The second seal 52z makes the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z flexibly connected. In particular, the shell 11z and the partition 3zE are usually made of plastic material, which causes the product to be prone to deformation after injection molding. The flexible connection reduces the higher production precision requirement for the inner diameter of the top end 1115z of the open end 111z to match the outer diameter of the guide groove 310z. Those skilled in the art can know that the arrangement of the at least one second seal 52z is basically the same as that of the at least one first seal 51z, which can be arranged as an independent element or can be regarded as part of the inner wall 1112z of the open end 111z of the shell 11z or the groove wall 3101z of the guide groove 310z.

[0202] Notably, the second seal 52z further improves the sealing between the low end 32z of the partition 3zE and the open end 111z of the shell 11z by at least two sealing effects. First, the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z, which itself strengthens the sealing between the low end 32z of the partition 3zE and the open end 111z of the shell 11z. Second, when water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to between the low end 32z of the partition 3zE and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3zE to deform outward, at which time the low end 32z of the partition 3zE moves outward, driving the groove wall 3101z of the guide groove 310z to move outward, driving the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.Therefore, when the water pressure in the filter bottle 1z is low, the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z can realize the sealing between the open end 111z of the shell 11z and the partition piece 3zE; when the water pressure in the filter bottle 1z is high, the open end 111z of the shell 11z of the filter bottle 1z expands outward under the water pressure, and the first seal 51z tightly seals the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zE and the outer wall 1111z of the open end 111z of the shell 11z under the clamping action of the low end 32z of the partition piece 3zE; when the water pressure in the filter bottle 1z is high, when the water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zE and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition piece 3zE to deform outward, and the water pressure will deform the first seal 51z, drive the low end 32z of the partition piece 3zE to move outward, and drive the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby realizing the self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z. It can be understood that when the user or the operator unscrews the filter bottle cap 2zE, the restraining part 42z of the restraining piece 4z presses against the partition piece 3zE, and the restraining part 42z of the restraining piece 4z can press and drive the partition piece 3zE to move relative to the open end 111z of the shell 11z of the filter bottle 1z and move away from the extension 112z of the shell 11z, and the restraining part 42z (or the filter bottle cap 2zE) of the restraining piece 4z and the partition piece 3zE rotate relative to each other, at this time, the torque of the frictional force exerted on the partition piece 3zE by the central seal 54z and the restraining part 42z of the restraining piece 4z is smaller than the torque of the frictional force exerted on the partition piece 3zE by the first seal 51z and the second seal 52z, therefore, when the user or the operator unscrews the filter bottle cap 2zE, the partition piece 3zE basically does not rotate, but only translates relative to the shell 11z.

[0203] As shown in FIGS. 8A-9C, the filter bottle device of the present application further comprises a retaining bracket 53z, wherein the retaining bracket 53z is fixed between the high end 31z of the partition 3zE and the filter element 12z, wherein the retaining bracket 53z is at least partially disposed opposite to the guide slot 310z to retain the second seal 52z at least partially within the guide slot 310z. Preferably, the retaining bracket 53z is disposed below the high end 31z of the partition 3zE and the retaining bracket 53z is surrounded by the inner wall 1112z of the open end 111z of the housing 11z. Preferably, the retaining bracket 53z can be fixed to the partition 3zE by welding, or the retaining bracket 53z can be fixed to the partition 3zE by other means such as screwing. More preferably, the retaining bracket 53z is integrally formed with the partition 3zE. Preferably, the retaining bracket 53z further has a gap 531z through which a user can use a screwdriver or other simple tool to remove the second seal 52z disposed in the guide slot 310z. It can be understood that the first seal 51z is disposed on the outer wall 1111z of the open end 111z of the housing 11z and the second seal 52z is disposed in the guide slot 310z of the partition 3zE, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0204] Referring to FIGS. 10A-11C of the drawings, a filter bottle device according to a fourth embodiment of the present application is illustrated, which comprises a filter bottle 1z, a filter core 12z, a filter bottle cap 2zC and a partition 3zC, wherein the filter bottle 1z comprises a housing 11z, the partition 3zC comprises a high end 31z and a low end 32z, the housing 11z comprises an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z with a mounting opening 1101z formed at the open end 111z of the housing 11z, the filter core 12z is disposed in the receiving cavity 110z, wherein the filter bottle cap 2zC is adapted to be detachably connected to the outer sidewall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3zC extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2zC, wherein the partition 3zC is disposed to be rotatable relative to the filter bottle cap 2zC. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3zC extends upwardly and inwardly obliquely from the low end 32z to the inner side of the filter bottle cap 2zC. Preferably, the filter core 12z and the housing 11z form a water cavity 120z therebetween. Preferably, the high end 31z of the partition 3zC is disposed between the filter bottle cap 2zC and the filter core 12z, the low end 32z of the partition 3zC is disposed between the inner sidewall 24z of the filter bottle cap 2zC and the outer wall 1111z of the open end 111z of the housing 11z, wherein the filter bottle cap 2zC is capable of driving the partition 3zC to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zC is connected to the connecting portion 113z of the housing 11z such that the filter bottle cap 2zC presses against the partition 3zC, in particular, the filter bottle cap 2zC is capable of driving the partition 3zC to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zC is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zC is in physical contact with the partition 3zC. Preferably, the high end 31z has a thickness greater than that of the low end 32z, so that the high end 31z has better force resistance performance.

[0205] As shown in FIGS. 10A-11C, the filter bottle device of the present application further comprises at least one first sealing member 51z, wherein the at least one first sealing member 51z is adapted to be arranged between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zC, so that when the filter bottle cap 2zC is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zC is in physical contact with the partition 3zC, the filter bottle cap 2zC can drive the partition 3zC to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3zC through the first sealing member 51z as the inner circumferential wall 321z of the lower end 32z of the partition 3zC moves to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the housing 11z is less than the thickness of the connecting portion 113z of the housing 11z. More preferably, the total thickness of the open end 111z of the housing 11z and the lower end 32z of the partition 3zC is substantially the same as the thickness of the connecting portion 113z of the housing 11z, so as to facilitate the connection and sealing between the filter bottle cap 2zC and the filter bottle 1z. It is understood by those skilled in the art that the at least one first sealing member 51z can be considered as a separate element, or as a part of the inner circumferential wall 321z of the lower end 32z of the partition 3zC, or as a part of the outer wall 1111z of the open end 111z of the housing 11z, and the arrangement of the at least one first sealing member 51z shall not limit the protection scope of the filter bottle device of the present application. It is understood that the at least one first sealing member 51z is pressed between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zC to ensure the sealing between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zC and to ensure that appropriate friction can be generated between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zC.In other words, when the user fastens the filter bottle cap 2zC to the connecting portion 113z of the shell 11z, the filter bottle cap 2zC can press against the partition 3zC to drive the partition 3zC to move relative to the open end 111z of the shell 11z of the filter bottle 1z and to achieve the sealing between the open end 111z of the shell 11z of the filter bottle 1z and the lower end 32z of the partition 3zC through the first sealing member 51z. When the user rotates the filter bottle 1z to fasten the filter bottle 1z to the filter bottle cap 2zC, the movement of the filter bottle 1z is not affected by the partition 3zC before the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zC. When the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zC, the partition 3zC can rotate with the filter bottle 1z under the driving of the filter bottle 1z and the friction between the inner circumferential wall 321z of the lower end 32z of the partition 3zC and the open end 111z of the shell 11z of the filter bottle 1z, so that the filter bottle 1z gradually approaches the upper end 31z of the partition 3zC and even presses against the upper end 31z of the partition 3zC with the rotation of the filter bottle 1z. At this time, since the partition 3zC can rotate with the filter bottle 1z under the driving of the filter bottle 1z during the installation of the filter bottle 1z, the installation of the filter bottle 1z is not hindered by the friction between the partition 3zC and the filter bottle 1z and the filter bottle 1z is easier to be installed.

[0206] The skilled in the art can know that the fastening connection between the filter bottle cap 2zC and the filter bottle 1z of the filter bottle device of the present application refers to the appropriate connection between the filter bottle cap 2zC and the filter bottle 1z through a certain connection mode, so that the filter bottle cap 2zC and the filter bottle 1z are firmly connected, so that the filter bottle cap 2zC can press and drive the partition 3zC to move relative to the open end 111z of the shell 11z of the filter bottle 1z, and even further press against the open end 111z of the shell 11z. The skilled in the art can know that the connection between the filter bottle cap 2zC and the filter bottle 1z of the filter bottle device of the present application can be achieved in various ways, for example, through threaded connection, rotating buckle connection, or other appropriate ways to achieve detachable connection.

[0207] The filter bottle 1z, the filter bottle cover 2zC, the partition piece 3zC and the first sealing piece 51z of the filter bottle device have the following advantages. First, when the user fastens the filter bottle cover 2zC to the connecting part 113z of the shell 11z of the filter bottle 1z, the filter bottle cover 2zC rotates and moves towards the extending part 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cover 2zC can press and drive the partition piece 3zC to move towards the extending part 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zC (for example, the friction generated by the first sealing piece 51z), the friction of the filter bottle cover 2zC on the partition piece 3zC will be difficult to drive the partition piece 3zC to rotate synchronously. Therefore, the partition piece 3zC basically does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby basically eliminating the obstruction of the large-size sealing piece to the relative rotation of the filter bottle cover 2zC and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cover 2zC and the filter bottle 1z. It can be understood that when the user fastens the shell 11z of the filter bottle 1z to the filter bottle cover 2zC by rotating the filter bottle 1z, and when the opening end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition piece 3zC, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zC, the partition piece 3zC will rotate under the drive of the filter bottle 1z, the filter bottle 1z is driven to move towards the high end 31z of the partition piece 3zC, and even abuts against the high end 31z of the partition piece 3zC. The arrangement of the filter bottle 1z, the filter bottle cover 2zC, the partition piece 3zC and the first sealing piece 51z of the filter bottle device can make the operator or user not need to tighten the filter bottle cover 2zC with great force when tightening the filter bottle cover 2zC, but only need to rotate to a preset position to ensure that the inner circumferential wall 321z of the low end 32z of the partition piece 3zC can press the first sealing piece 51z against the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z. Therefore, the relative rotation (during tightening) between the filter bottle cover 2zC and the filter bottle 1z of the filter bottle device is basically not hindered by the large-size sealing piece, and is easy to rotate.Accordingly, when the filter bottle cap 2zC is unscrewed (or screwed off) from the outer wall 1111z of the open end 111z of the shell 11z of the filter bottle 1z, it is also relatively easy. In other words, the present application creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2zC and the filter bottle 1z as independent and separate from each other as possible, and to replace the filter bottle cap 2zC with the partition piece 3zC to undertake the "sealing" function, so that the filter bottle cap 2zC and the filter bottle 1z are easier to screw on and unscrew. In addition, since the partition piece 3zC can not rotate relative to the filter bottle 1z, the first sealing piece 51z is less likely to be twisted, which can reduce the risk of sealing failure and water leakage. Secondly, when the water pressure acts on the inside of the filter bottle 1z of the filter bottle device of the present application, the water pressure can be used to support the wall of the filter bottle 1z transversely (radially) from the inside of the filter bottle 1z to obtain a structure with stronger stability. At this time, due to the external action of the filter bottle cap 2zC and the internal pressure action of the water pressure in the filter bottle 1z, the open end 111z of the filter bottle 1z can have better roundness and expand outward to further press the first sealing piece 51z, so that the sealing between the partition piece 3zC and the filter bottle 1z is better. Thirdly, the better sealing between the partition piece 3zC and the filter bottle 1z also allows manufacturers or users to choose a sealing piece with a smaller compression amount compared to the traditional sealing method, so that the sealing piece can be used multiple times without the need to replace the sealing piece every time the filter element is replaced. The first sealing piece 51z with smaller compression amount also makes the relative translation between the partition piece 3zC and the filter bottle 1z less obstructed, which is conducive to further reducing the difficulty of screwing on and unscrewing the filter bottle cap 2zC and the filter bottle 1z. Finally, the arrangement of the filter bottle 1z, the filter bottle cap 2zC, the partition piece 3zC and the first sealing piece 51z of the filter bottle device of the present application further overcomes the defect that the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zC. When the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zC, since the water pressure in the filter bottle 1z is from inside to outside, when the inner wall of the filter bottle 1z is stressed, the shell 11z of the filter bottle 1z expands outward, which may cause the first sealing piece 51z arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zC to loosen and cause the sealing between the inner wall of the open end 111z and the outer wall of the partition piece 3zC to be damaged.

[0208] As shown in FIGS. 10A-11C, the filter bottle device of the present application further comprises a metal ring 60z, wherein the metal ring 60z is arranged on the outer peripheral wall 322z of the lower end 32z of the partition 3zC. It is understood that the metal ring 60z arranged on the outer peripheral wall 322z of the lower end 32z of the partition 3zC can reduce the deformation or expansion of the lower end 32z of the partition 3zC after being pressed, improve the sealing between the lower end 32z of the partition 3zC and the open end 111z of the housing 11z of the filter bottle 1z, and prevent the lower end 32z of the partition 3zC from being broken when being pressed too much. In addition, the surface of the metal ring 60z is smoother, which can further reduce the friction between the outer peripheral wall 322z of the lower end 32z of the partition 3zC and the filter bottle cap 2zC. Finally, the metal ring 60z can also help maintain the roundness of the lower end 32z of the partition 3zC. It is understood by those skilled in the art that the metal ring 60z of the filter bottle device of the present application should have appropriate strength. For example, the metal ring 60z of the filter bottle device of the present application can be made of stainless steel or silicon steel material.

[0209] As shown in FIGS. 10A-11C, preferably, the upper end 31z of the partition 3zC of the filter bottle device of the present application extends upward and inward from the lower end 32z, so that the angle a between the upper end 31z and the lower end 32z is obtuse, to improve the force resistance of the partition 3zC and prevent the partition 3zC from deforming. Accordingly, the upper end 31z of the partition 3zC is arranged between the filter bottle cap 2zC and the lower end 32z of the partition 3zC. Preferably, the angle a formed by the lower end 32z and the upper end 31z is greater than 90 degrees and less than 135 degrees. In addition, the angle a between the upper end 31z and the lower end 32z is obtuse, allowing the lower end 32z to form a cylindrical or trumpet-shaped accommodation space 3201z. Accordingly, the lower end 32z of the partition 3zC of the filter bottle device of the present application is cylindrical or trumpet-shaped, so that the filter element 12z can be inserted into the cylindrical or trumpet-shaped accommodation space 3201z formed by the lower end 32z, thereby minimizing the height of the entire filter bottle 1z and ensuring that the improved filter bottle device can be installed in existing water treatment equipment.

[0210] As shown in FIGS. 10A to 11C of the accompanying drawings, preferably, the partition 3zC of the filter bottle device of the present application further comprises a set of reinforcing ribs 35z, wherein the reinforcing ribs 35z are arranged on the inner wall of the high end 31z along the extension direction of the high end 31z. It can be understood that the reinforcing ribs 35z of the partition 3zC can strengthen the strength of the high end 31z and the entire partition 3zC to prevent them from being deformed under stress, thereby helping to maintain the roundness of the low end 32z of the partition 3zC.

[0211] As shown in FIGS. 10A-11C, the filter bottle device further comprises a limiting member 9z, the filter bottle cap 2zC comprises an opening portion 21z and a mounting portion 22z extending from the opening portion 21z, the partition member 3zC further comprises a positioning portion 33zC and a limiting portion 34zC, wherein the low end 32z and the positioning portion 33zC are integrally extended from two opposite sides of the high end 31z respectively, and the limiting portion 34zC extends outwardly from the positioning portion 33zC, wherein the opening portion 21z forms a through opening 210z, and the positioning portion 33zC penetrates out of the through opening 210z of the opening portion 21z, the limiting member 9z is adapted to be arranged between the limiting portion 34zC and the opening portion 21z of the filter bottle cap 2zC, so that the filter bottle cap 2zC and the partition member 3zC cannot relatively translate and can relatively rotate with small resistance. Preferably, the inner side of the opening portion 21z of the filter bottle cap 2zC is at least partially in physical contact with the upper side of the high end 31z of the partition member 3zC. It can be understood that the water inlet and the water outlet of the filter bottle device shown in FIGS. 10A-11C are arranged at the end of the filter bottle device away from the filter bottle cap 2zC, and the filter bottle cap 2zC does not have a water-through opening. The limiting member 9z is exemplarily a snap spring, but can also be a nut or other limiting member, for example, can be fixed on the limiting portion 34zC of the partition member 3zC by a nut. It can be understood that when the shell 11z of the filter bottle 1z is tightly connected to the filter bottle cap 2zC, the partition member 3zC will rotate relative to the filter bottle cap 2zC with the positioning portion 33zC as the rotation axis under the driving of the filter bottle 1z due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition member 3zC; when the filter bottle cap 2zC is tightly connected to the shell 11z of the filter bottle 1z, the filter bottle cap 2zC will rotate relative to the partition member 3zC with the positioning portion 33zC as the rotation axis due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition member 3zC. Accordingly, as shown in FIGS. 10A-11C, the arrangement of the partition member 3zC of the filter bottle device of the present application makes it unnecessary to arrange a water-tight mechanism between the partition member 3zC and the filter bottle cap 2zC, so that the partition member 3zC is easy to be driven to rotate relative to the filter bottle cap 2zC.

[0212] As shown in FIGS. 10A to 11C of the accompanying drawings, the mounting portion 22z of the filter bottle cap 2zC and the lower end 32z of the partition 3zC of the filter bottle device of the present application form a fitting gap 2201z therebetween, wherein the fitting gap 2201z has a proper size. Preferably, the width D3 of the fitting gap 2201z is between 1-2mm. If the fitting gap 2201z between the mounting portion 22z of the filter bottle cap 2zC and the lower end 32z of the partition 3zC is too large, when the water pressure in the filter bottle 1z of the filter bottle device of the present application presses the open end 111z and drives the lower end 32z of the partition 3zC to expand outward, the lower end 32z of the partition 3zC can be broken before the filter bottle cap 2zC is restrained by the lower end 32z of the partition 3zC, and if the fitting gap 2201z between the mounting portion 22z of the filter bottle cap 2zC and the lower end 32z of the partition 3zC is too small, the mounting between the mounting portion 22z of the filter bottle cap 2zC and the lower end 32z of the partition 3zC can be hindered.

[0213] As shown in FIGS. 10A to 11C of the accompanying drawings, the open end 111z of the housing 11z of the filter bottle device of the present application comprises a main portion 1113z and a sealing portion 1114z extending outwardly from the main portion 1113z, wherein the first sealing member 51z is arranged between the sealing portion 1114z of the open end 111z and the inner peripheral wall 321z of the lower end 32z of the partition 3zC. Preferably, the lower end 32z is cylindrical or flared along its extending direction, so that the partition 3zC is more easily to compress the first sealing member 51z and move relative to the open end 111z of the housing 11z and more easily to gradually achieve the sealing between the sealing portion 1114z of the open end 111z and the lower end 32z of the partition 3zC when the partition 3zC is pressed and driven by the filter bottle cap 2zC. Alternatively, the lower end 32z is cylindrical or flared along its extending direction. Accordingly, the partition 3zC is more easily to move away from the sealing portion 1114z of the open end 111z when the filter bottle cap 2zC is removed.

[0214] As shown in FIGS. 10A-11C, the high end 31z of the partition 3zC of the filter bottle device of the present application forms a guide groove 310z, wherein the guide groove 310z is arranged adjacent to the low end 32z of the partition 3zC and opposite to the open end 111z of the shell 11z, and wherein the top end 1115z of the open end 111z of the shell 11z is arranged to be placed in the guide groove 310z (the inner diameter of the top end 1115z of the open end 111z is slightly larger than the outer diameter of the guide groove 310z). Accordingly, the guide groove 310z of the high end 31z can guide the top end 1115z of the open end 111z of the shell 11z into the guide groove 310z and, when the filter bottle cap 2zC presses and drives the partition 3zC to move relative to the open end 111z of the shell 11z of the filter bottle 1z, guide and help the low end 32z of the partition 3zC to press against the outer wall 1111z of the open end 111z of the shell 11z (e.g., through the first sealing member 51z pressing against the outer wall 1111z of the open end 111z of the shell 11z). The guide groove 310z, the open end 111z of the shell 11z, the first sealing member 51z and the inner peripheral wall 321z of the low end 32z of the partition 3zC cooperate with each other, so that the guide groove 310z and the inner peripheral wall 321z of the low end 32z of the partition 3zC better wrap the first sealing member 51z. It can be understood that, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32z of the partition 3zC to deform outwardly, the guide groove 310z can cause the inner peripheral wall 321z of the low end 32z of the partition 3zC to always press the first sealing member 51z and deform outwardly synchronously with the open end 111z of the shell 11z (because, due to the positioning effect of the guide groove 310z, when the inner peripheral wall 321z of the low end 32z of the partition 3zC deforms excessively outwardly under water pressure, the guide groove 310z will press against the inner wall 1112z of the open end 111z of the shell 11z, so that the inner peripheral wall 321z of the low end 32z of the partition 3zC cannot deform excessively outwardly), that is, when the water pressure in the filter bottle 1z causes the open end 111z of the shell 11z and the inner peripheral wall 321z of the low end 32z of the partition 3zC to deform outwardly, the first sealing member 51z is always pressed by the inner peripheral wall 321z of the low end 32z of the partition 3zC to maintain the sealing between the inner peripheral wall 321z of the low end 32z of the partition 3zC and the open end 111z of the shell 11z.When the water pressure inside the filter bottle 1z drops and causes the open end 111z of the shell 11z to deform inwardly, the open end 111z of the shell 11z presses against the guide groove 310z inwardly, so that the guide groove 310z further pulls the inner circumferential wall 321z of the low end 32z of the partition piece 3zC to deform inwardly as well, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3zC always presses against the first sealing piece 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0215] As shown in FIGS. 10A-11C of the drawings, preferably, the filter bottle device of the present application further comprises at least one second sealing piece 52z, wherein the second sealing piece 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. The second sealing piece 52z makes the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z flexibly connected. In particular, the shell 11z and the partition piece 3zC are usually made of plastic material, which causes the product to be prone to deformation after injection molding. The flexible connection reduces the higher production precision requirement for the inner diameter of the top end 1115z of the open end 111z to match the outer diameter of the guide groove 310z. Those skilled in the art can know that the arrangement of the at least one second sealing piece 52z is basically the same as that of the at least one first sealing piece 51z, which can be arranged as an independent element or can be regarded as a part of the inner wall 1112z of the open end 111z of the shell 11z or the groove wall 3101z of the guide groove 310z.

[0216] Notably, the second seal 52z further improves the sealing between the low end 32z of the partition 3zC and the open end 111z of the shell 11z by at least two sealing effects. First, the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z, which itself strengthens the sealing between the low end 32z of the partition 3zC and the open end 111z of the shell 11z. Second, when water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to between the low end 32z of the partition 3zC and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3zC to deform outward, at which time the low end 32z of the partition 3zC moves outward, driving the groove wall 3101z of the guide groove 310z to move outward, driving the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.Therefore, when the water pressure in the filter bottle 1z is low, the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z can realize the sealing between the open end 111z of the shell 11z and the partition piece 3zC; when the water pressure in the filter bottle 1z is high, the open end 111z of the shell 11z of the filter bottle 1z expands outward under the water pressure, and the first seal 51z tightly seals the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zC and the outer wall 1111z of the open end 111z of the shell 11z under the clamping action of the low end 32z of the partition piece 3zC; when the water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to the gap between the inner peripheral wall 321z of the low end 32z of the partition piece 3zC and the outer wall 1111z of the open end 111z of the shell 11z when the water pressure in the filter bottle 1z is high, the water pressure will compress and drive the low end 32z of the partition piece 3zC to deform outward, and the water pressure will deform the first seal 51z, drive the low end 32z of the partition piece 3zC to move outward, and drive the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby realizing the self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z. It can be understood that when the user or operator unscrews the filter bottle cap 2zC, the torque of the frictional force exerted by the limiting piece 9z on the partition piece 3zC is less than the torque of the frictional force exerted by the first seal 51z and the second seal 52z on the partition piece 3zC, so when the user or operator unscrews the filter bottle cap 2zC, the partition piece 3zC does not rotate substantially, but only translates relative to the shell 11z.

[0217] As shown in FIGS. 10A-11C, the filter bottle device of the present application further comprises a retaining bracket 53z, wherein the retaining bracket 53z is fixed between the high end 31z of the partition 3zC and the filter core 12z, wherein the retaining bracket 53z is at least partially arranged opposite to the guide slot 310z to retain the second seal 52z at least partially within the guide slot 310z. Preferably, the retaining bracket 53z is arranged below the high end 31z of the partition 3zC and the retaining bracket 53z is surrounded by the inner wall 1112z of the open end 111z of the housing 11z. Preferably, the retaining bracket 53z can be fixed to the partition 3zC by welding, or can be fixed to the partition 3zC by other means such as screwing. More preferably, the retaining bracket 53z is integrally formed with the partition 3zC. Preferably, the retaining bracket 53z further has a gap 531z through which a user can use a screwdriver or other simple tool to remove the second seal 52z arranged in the guide slot 310z. It can be understood that the first seal 51z is arranged on the outer wall 1111z of the open end 111z of the housing 11z and the second seal 52z is arranged in the guide slot 310z of the partition 3zC, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0218] Figures 12A-13C show an alternative embodiment of the filter bottle device according to the fourth embodiment of the present application, which comprises a filter bottle 1z, a filter cartridge 12z, a filter bottle cap 2zD and a partition 3zD, wherein the filter bottle 1z comprises a housing 11z, the partition 3zD comprises a high end 31z and a low end 32z, the housing 11z comprises an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z with a mounting opening 1101z formed at the open end 111z of the housing 11z, the filter cartridge 12z is disposed in the receiving cavity 110z, wherein the filter bottle cap 2zD is adapted to be detachably connected to the outer sidewall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3zD extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2zD, and the partition 3zD is disposed to be rotatable relative to the filter bottle cap 2zD. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3zD extends upwardly and inwardly obliquely from the low end 32z to the inner side of the filter bottle cap 2zD. Preferably, the filter cartridge 12z and the housing 11z form a water cavity 120z therebetween. Preferably, the high end 31z of the partition 3zD is disposed between the filter bottle cap 2zD and the filter cartridge 12z, and the low end 32z of the partition 3zD is disposed between the inner sidewall 24z of the filter bottle cap 2zD and the outer wall 1111z of the open end 111z of the housing 11z, wherein the filter bottle cap 2zD is capable of driving the partition 3zD to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zD is connected to the connecting portion 113z of the housing 11z such that the filter bottle cap 2zD abuts against the partition 3zD, in particular, the filter bottle cap 2zD is capable of driving the partition 3zD to move relative to the open end 111z of the housing 11z of the filter bottle 1z when the filter bottle cap 2zD is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zD is in physical contact with the partition 3zD. Preferably, the high end 31z has a thickness greater than that of the low end 32z, such that the high end 31z has better force resistance performance.

[0219] As shown in FIGS. 12A-13C, the filter bottle device of the present application further comprises at least one first sealing member 51z, wherein the at least one first sealing member 51z is adapted to be arranged between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zD, so that when the filter bottle cap 2zD is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2zD is in physical contact with the partition 3zD, the filter bottle cap 2zD can drive the partition 3zD to move relative to the open end 111z of the housing 11z of the filter bottle 1z and achieve sealing between the open end 111z of the housing 11z of the filter bottle 1z and the lower end 32z of the partition 3zD through the first sealing member 51z as the inner circumferential wall 321z of the lower end 32z of the partition 3zD moves to the open end 111z of the housing 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the housing 11z is less than the thickness of the connecting portion 113z of the housing 11z. More preferably, the total thickness of the open end 111z of the housing 11z and the lower end 32z of the partition 3zD is substantially the same as the thickness of the connecting portion 113z of the housing 11z, so as to facilitate the connection and sealing between the filter bottle cap 2zD and the filter bottle 1z. Those skilled in the art can know that the at least one first sealing member 51z can be considered as a separate element, or as a part of the inner circumferential wall 321z of the lower end 32z of the partition 3zD, or as a part of the outer wall 1111z of the open end 111z of the housing 11z, and the arrangement of the at least one first sealing member 51z shall not limit the protection scope of the filter bottle device of the present application. It can be understood that the at least one first sealing member 51z is pressed between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zD to ensure the sealing between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zD and to ensure that appropriate friction can be generated between the outer wall 1111z of the open end 111z of the housing 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zD.In other words, when the user fastens the filter bottle cap 2zD to the connecting portion 113z of the shell 11z, the filter bottle cap 2zD can press against the partition 3zD to drive the partition 3zD to move relative to the open end 111z of the shell 11z of the filter bottle 1z and to achieve the sealing between the open end 111z of the shell 11z of the filter bottle 1z and the lower end 32z of the partition 3zD through the first sealing member 51z. When the user rotates the filter bottle 1z to fasten the filter bottle 1z to the filter bottle cap 2zD, the movement of the filter bottle 1z is not affected by the partition 3zD before the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zD. When the open end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the lower end 32z of the partition 3zD, the partition 3zD can rotate with the filter bottle 1z under the driving of the filter bottle 1z and the friction between the inner circumferential wall 321z of the lower end 32z of the partition 3zD and the open end 111z of the shell 11z of the filter bottle 1z, so that the filter bottle 1z gradually approaches the upper end 31z of the partition 3zD or even presses against the upper end 31z of the partition 3zD with the rotation of the filter bottle 1z. At this time, since the partition 3zD can rotate with the filter bottle 1z under the driving of the filter bottle 1z during the installation of the filter bottle 1z, the installation of the filter bottle 1z is not hindered by the friction between the partition 3zD and the filter bottle 1z and the filter bottle 1z is easier to be installed.

[0220] The skilled in the art can know that the fastening connection between the filter bottle cap 2zD and the filter bottle 1z of the filter bottle device of the present application refers to the appropriate connection between the filter bottle cap 2zD and the filter bottle 1z of the filter bottle device of the present application through a certain connection mode, so that the filter bottle cap 2zD and the filter bottle 1z are firmly connected, so that the filter bottle cap 2zD can press and drive the partition 3zD to move relative to the open end 111z of the shell 11z of the filter bottle 1z or even further press against the open end 111z of the shell 11z. The skilled in the art can know that the connection between the filter bottle cap 2zD and the filter bottle 1z of the filter bottle device of the present application can be achieved in various ways, for example, through threaded connection, rotating buckle connection, or other appropriate ways to achieve detachable connection.

[0221] The filter bottle 1z, the filter bottle cover 2zD, the partition piece 3zD and the first sealing piece 51z of the filter bottle device have the following advantages. First, when the user fastens the filter bottle cover 2zD to the connecting part 113z of the shell 11z of the filter bottle 1z, the filter bottle cover 2zD rotates and moves towards the extending part 112z of the shell 11z of the filter bottle 1z, so that the filter bottle cover 2zD can press and drive the partition piece 3zD to move towards the extending part 112z of the shell 11z of the filter bottle 1z. During this process, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zD (for example, the friction generated by the first sealing piece 51z), the friction of the filter bottle cover 2zD on the partition piece 3zD will be difficult to drive the partition piece 3zD to rotate synchronously. Therefore, the partition piece 3zD basically does not rotate relative to the opening end 111z of the shell 11z of the filter bottle 1z, but only translates relative to the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z, thereby basically eliminating the obstruction of the large-size sealing piece to the relative rotation of the filter bottle cover 2zD and the filter bottle 1z, and greatly reducing the difficulty of tightening the filter bottle cover 2zD and the filter bottle 1z. It can be understood that when the user fastens the shell 11z of the filter bottle 1z to the filter bottle cover 2zD by rotating the filter bottle 1z, and when the opening end 111z of the shell 11z of the filter bottle 1z moves to the inner circumferential wall 321z of the low end 32z of the partition piece 3zD, due to the friction between the opening end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition piece 3zD, the partition piece 3zD will rotate under the drive of the filter bottle 1z, the filter bottle 1z is driven to move towards the high end 31z of the partition piece 3zD, and even abuts against the high end 31z of the partition piece 3zD. The arrangement of the filter bottle 1z, the filter bottle cover 2zD, the partition piece 3zD and the first sealing piece 51z of the filter bottle device can make the operator or user not need to tighten the filter bottle cover 2zD with great force when tightening the filter bottle cover 2zD, but only need to rotate to a preset position to ensure that the inner circumferential wall 321z of the low end 32z of the partition piece 3zD can press the first sealing piece 51z against the outer wall 1111z of the opening end 111z of the shell 11z of the filter bottle 1z. Therefore, the relative rotation (during tightening) between the filter bottle cover 2zD and the filter bottle 1z of the filter bottle device is basically not hindered by the large-size sealing piece, and is easy to rotate.Accordingly, when the filter bottle cap 2zD is unscrewed (or screwed off) from the outer wall 1111z of the open end 111z of the shell 11z of the filter bottle 1z, it is also relatively easy. In other words, the present application creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2zD and the filter bottle 1z as independent and separate from each other as possible, and to replace the filter bottle cap 2zD with the partition piece 3zD to undertake the "sealing" function, so that the filter bottle cap 2zD and the filter bottle 1z are easier to screw on and unscrew. In addition, since the partition piece 3zD can not rotate relative to the filter bottle 1z, the first sealing piece 51z is less likely to be twisted, which can reduce the risk of sealing failure and water leakage. Secondly, when the water pressure acts on the inside of the filter bottle 1z of the filter bottle device of the present application, the water pressure can be used to support the wall of the filter bottle 1z transversely (radially) from the inside of the filter bottle 1z to obtain a structure with stronger stability. At this time, due to the external action of the filter bottle cap 2zD and the internal pressure action of the water pressure in the filter bottle 1z, the open end 111z of the filter bottle 1z can have better roundness and expand outward to further press the first sealing piece 51z, so that the sealing between the partition piece 3zD and the filter bottle 1z is better. Thirdly, the better sealing between the partition piece 3zD and the filter bottle 1z also allows manufacturers or users to choose a sealing piece with a smaller compression amount compared to the traditional sealing method, so that the sealing piece can be used multiple times without being replaced each time the filter core is replaced. The first sealing piece 51z with smaller compression amount also makes the relative translation between the partition piece 3zD and the filter bottle 1z less obstructed, which is conducive to further reducing the difficulty of screwing on and unscrewing the filter bottle cap 2zD and the filter bottle 1z. Finally, the arrangement of the filter bottle 1z, the filter bottle cap 2zD, the partition piece 3zD and the first sealing piece 51z of the filter bottle device of the present application further overcomes the defect that the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zD. When the first sealing piece 51z is arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zD, since the water pressure in the filter bottle 1z is from inside to outside, when the inner wall of the filter bottle 1z is stressed, the shell 11z of the filter bottle 1z expands outward, which may cause the first sealing piece 51z arranged between the inner wall of the open end 111z of the shell 11z and the outer wall of the partition piece 3zD to loosen and cause the sealing between the inner wall of the open end 111z and the outer wall of the partition piece 3zD to be damaged.

[0222] As shown in FIGS. 12A-13C, the filter bottle device of the present application further comprises a metal ring 60z, wherein the metal ring 60z is arranged on the outer peripheral wall 322z of the lower end 32z of the partition 3zD. It is understood that the metal ring 60z arranged on the outer peripheral wall 322z of the lower end 32z of the partition 3zD can reduce the deformation or expansion of the lower end 32z of the partition 3zD after being pressed, improve the sealing between the lower end 32z of the partition 3zD and the open end 111z of the housing 11z of the filter bottle 1z, and prevent the lower end 32z of the partition 3zD from being broken when being pressed too much. In addition, the surface of the metal ring 60z is smoother, which can further reduce the friction between the outer peripheral wall 322z of the lower end 32z of the partition 3zD and the filter bottle cap 2zD. Finally, the metal ring 60z can also help maintain the roundness of the lower end 32z of the partition 3zD. It is understood by those skilled in the art that the metal ring 60z of the filter bottle device of the present application should have appropriate strength. For example, the metal ring 60z of the filter bottle device of the present application can be made of stainless steel or silicon steel material.

[0223] As shown in FIGS. 12A-13C, preferably, the upper end 31z of the partition 3zD of the filter bottle device of the present application extends upward and inward from the lower end 32z, so that the angle a between the upper end 31z and the lower end 32z is obtuse, to improve the force resistance of the partition 3zD and prevent the partition 3zD from deforming. Accordingly, the upper end 31z of the partition 3zD is arranged between the filter bottle cap 2zD and the lower end 32z of the partition 3zD. Preferably, the angle a formed by the lower end 32z and the upper end 31z is greater than 90 degrees and less than 135 degrees. In addition, the angle a between the upper end 31z and the lower end 32z is obtuse, allowing the lower end 32z to form a cylindrical or trumpet-shaped accommodation space 3201z. Accordingly, the lower end 32z of the partition 3zD of the filter bottle device of the present application is cylindrical or trumpet-shaped, so that the filter element 12z can be inserted into the cylindrical or trumpet-shaped accommodation space 3201z formed by the lower end 32z, thereby minimizing the height of the entire filter bottle 1z and ensuring that the improved filter bottle device can be installed in existing water treatment equipment.

[0224] As shown in FIGS. 12A to 13C of the accompanying drawings, preferably, the partition 3zD of the filter bottle device of the present application further comprises a set of reinforcing ribs 35z, wherein the reinforcing ribs 35z are arranged on the inner wall of the high end 31z along the extending direction of the high end 31z. It can be understood that the reinforcing ribs 35z of the partition 3zD can strengthen the strength of the high end 31z and the whole partition 3zD to prevent them from being deformed under stress, thereby helping to maintain the roundness of the low end 32z of the partition 3zD.

[0225] As shown in FIGS. 12A to 13C of the accompanying drawings, the filter bottle device further comprises a limiting member 9zD, the filter bottle cap 2zD comprises a limiting portion 21zD and a mounting portion 22z extending from the limiting portion 21zD, and the partition 3zD further has a positioning opening 33zD, wherein the low end 32z integrally extends from the high end 31z, wherein the limiting portion 21zD forms a limiting chamber 210zD, and one end of the limiting member 9zD is adapted to be arranged at the high end 31z of the partition 3zD, and the other end of the limiting member 9zD passes through the positioning opening 33zD and is adapted to be fixedly arranged in the limiting chamber 210zD, so that the filter bottle cap 2zD and the partition 3zD cannot relatively translate and can relatively rotate with small resistance. Preferably, the limiting member 9zD is a positioning screw, the positioning screw 9zD forms a positioning column 91zD matched with the positioning opening 33zD, a threaded portion 92zD fixed in the limiting chamber 210zD, and a central sealing member 93zD between the positioning opening 33zD and the positioning column 91zD, which can ensure the sealing between the partition 3zD and the positioning screw 9zD. It can be understood that the water inlet and the water outlet of the filter bottle device shown in FIGS. 12A to 13C are arranged at the end of the filter bottle device away from the filter bottle cap 2zD, and the filter bottle cap 2zD does not have a water passing opening. It can be understood that when the shell 11z of the filter bottle 1z is fastened and connected to the filter bottle cap 2zD, due to the friction between the open end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3zD, the partition 3zD will rotate relative to the filter bottle cap 2zD with the positioning column 91zD as the rotation axis under the driving of the filter bottle 1z; when the filter bottle cap 2zD is fastened and connected to the shell 11z of the filter bottle 1z, due to the friction between the open end 111z of the shell 11z of the filter bottle 1z and the low end 32z of the partition 3zD, the filter bottle cap 2zD will rotate relative to the partition 3zD with the positioning column 91zD as the rotation axis.

[0226] As shown in FIGS. 12A to 13C, the mounting portion 22z of the filter bottle cap 2zD and the lower end 32z of the partition 3zD of the filter bottle device of the present application form a fitting gap 2201z therebetween, wherein the fitting gap 2201z has a proper size. Preferably, the width D3 of the fitting gap 2201z is between 1-2mm. If the fitting gap 2201z between the mounting portion 22z of the filter bottle cap 2zD and the lower end 32z of the partition 3zD is too large, when the water pressure in the filter bottle 1z of the filter bottle device of the present application presses the open end 111z and drives the lower end 32z of the partition 3zD to expand outward, the lower end 32z of the partition 3zD can be broken before the filter bottle cap 2zD is bound to the lower end 32z of the partition 3zD, and if the fitting gap 2201z between the mounting portion 22z of the filter bottle cap 2zD and the lower end 32z of the partition 3zD is too small, the mounting between the mounting portion 22z of the filter bottle cap 2zD and the lower end 32z of the partition 3zD can be hindered.

[0227] As shown in FIGS. 12A to 13C, the open end 111z of the housing 11z of the filter bottle device of the present application comprises a main portion 1113z and a sealing portion 1114z extending outwardly from the main portion 1113z, wherein the first sealing member 51z is arranged between the sealing portion 1114z of the open end 111z and the inner peripheral wall 321z of the lower end 32z of the partition 3zD. Preferably, the lower end 32z is cylindrical or flared along its extending direction, so that the partition 3zD is more easily to compress the first sealing member 51z and move relative to the open end 111z of the housing 11z and more easily to gradually achieve the sealing between the sealing portion 1114z of the open end 111z and the lower end 32z of the partition 3zD when the partition 3zD is pressed and driven by the filter bottle cap 2zD. Alternatively, the lower end 32z is cylindrical or flared along its extending direction. Accordingly, the partition 3zD is more easily to move away from the sealing portion 1114z of the open end 111z when the filter bottle cap 2zD is removed.

[0228] As shown in FIGS. 12A-13C, the high end 31zD of the partition 3zD of the filter bottle device of the present application forms a guide groove 310z, wherein the guide groove 310z is arranged adjacent to the low end 32zD of the partition 3zD and opposite to the open end 111zD of the shell 11zD, and wherein the top end 1115zD of the open end 111zD of the shell 11zD is arranged to be placed in the guide groove 310z (the inner diameter of the top end 1115zD of the open end 111zD is slightly larger than the outer diameter of the guide groove 310z). Accordingly, the guide groove 310z of the high end 31zD can guide the top end 1115zD of the open end 111zD of the shell 11zD into the guide groove 310z and, when the filter bottle cap 2zD presses and drives the partition 3zD to move relative to the open end 111zD of the shell 11zD of the filter bottle 1zD, guide and help the low end 32zD of the partition 3zD to press against the outer wall 1111zD of the open end 111zD of the shell 11zD (e.g., through the first sealing member 51zD pressing against the outer wall 1111zD of the open end 111zD of the shell 11zD). It can be understood that the guide groove 310z, the open end 111zD of the shell 11zD, the first sealing member 51zD and the inner peripheral wall 321zD of the low end 32zD of the partition 3zD cooperate with each other, so that the guide groove 310z and the inner peripheral wall 321zD of the low end 32zD of the partition 3zD better wrap the first sealing member 51zD. It can be understood that, when the water pressure in the filter bottle 1zD causes the open end 111zD of the shell 11zD and the inner peripheral wall 321zD of the low end 32zD of the partition 3zD to deform outwardly, the guide groove 310z can cause the inner peripheral wall 321zD of the low end 32zD of the partition 3zD to always press the first sealing member 51zD and deform outwardly synchronously with the open end 111zD of the shell 11zD (because, due to the positioning effect of the guide groove 310z, when the inner peripheral wall 321zD of the low end 32zD of the partition 3zD excessively deforms outwardly under water pressure, the guide groove 310z will press against the inner wall 1112zD of the open end 111zD of the shell 11zD, so that the inner peripheral wall 321zD of the low end 32zD of the partition 3zD cannot excessively deform outwardly), that is, when the water pressure in the filter bottle 1zD causes the open end 111zD of the shell 11zD and the inner peripheral wall 321zD of the low end 32zD of the partition 3zD to deform outwardly, the first sealing member 51zD is always pressed by the inner peripheral wall 321zD of the low end 32zD of the partition 3zD to maintain the sealing between the inner peripheral wall 321zD of the low end 32zD of the partition 3zD and the open end 111zD of the shell 11zD.When the water pressure inside the filter bottle 1z drops and the open end 111z of the shell 11z deforms inwardly, the open end 111z of the shell 11z presses against the guide groove 310z inwardly, so that the guide groove 310z further pulls the inner circumferential wall 321z of the low end 32z of the partition 3zD to deform inwardly, so that the inner circumferential wall 321z of the low end 32z of the partition 3zD always presses the first seal 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0229] As shown in FIGS. 12A-13C of the drawings, preferably, the filter bottle device of the present application further comprises at least one second seal 52z, wherein the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. More preferably, the second seal 52z flexibly connects between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z. In particular, the shell 11z and the partition 3zD are usually made of plastic material, which causes the product to be easily deformed after injection molding. The flexible connection reduces the higher production precision requirement for the inner diameter of the top end 1115z of the open end 111z to match the outer diameter of the guide groove 310z. Those skilled in the art can know that the arrangement of the at least one second seal 52z is basically the same as that of the at least one first seal 51z, which can be arranged as an independent element or can be regarded as part of the inner wall 1112z of the open end 111z of the shell 11z or the groove wall 3101z of the guide groove 310z.

[0230] Notably, the second seal 52z further improves the sealing between the low end 32z of the partition 3zD and the open end 111z of the shell 11z by at least two sealing effects. First, the second seal 52z is arranged between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z, which itself strengthens the sealing between the low end 32z of the partition 3zD and the open end 111z of the shell 11z. Second, when water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to between the low end 32z of the partition 3zD and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3zD to deform outward, at which time the low end 32z of the partition 3zD moves outward, driving the groove wall 3101z of the guide groove 310z to move outward, driving the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z.Therefore, when the water pressure in the filter bottle 1z is low, the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z can achieve the sealing between the open end 111z of the shell 11z and the partition 3zD; when the water pressure in the filter bottle 1z is high, the open end 111z of the shell 11z of the filter bottle 1z expands outward under the water pressure, and the first seal 51z tightly seals the gap between the inner peripheral wall 321z of the low end 32z of the partition 3zD and the outer wall 1111z of the open end 111z of the shell 11z under the clamping action of the low end 32z of the partition 3zD; when the water pressure in the filter bottle 1z is high, when the water in the filter bottle 1z leaks from the second seal 52z between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z to the gap between the inner peripheral wall 321z of the low end 32z of the partition 3zD and the outer wall 1111z of the open end 111z of the shell 11z, the water pressure will press and drive the low end 32z of the partition 3zD to deform outward, and the water pressure will deform the first seal 51z, drive the low end 32z of the partition 3zD to move outward, and drive the groove wall 3101z of the guide groove 310z to press against the second seal 52z, thereby achieving self-sealing between the inner wall 1112z of the open end 111z of the shell 11z and the groove wall 3101z of the guide groove 310z through the second seal 52z. It can be understood that when the user or operator unscrews the filter bottle cap 2zD, the torque of the frictional force exerted by the limiting member 9zD and the central seal 93zD on the partition 3zD is less than the torque of the frictional force of the first seal 51z and the second seal 52z, so when the user or operator unscrews the filter bottle cap 2zD, the partition 3zD does not rotate substantially, but only translates relative to the shell 11z. As shown in FIGS. 12A-13C, the filter bottle device of the present application further comprises a retaining bracket 53z, wherein the retaining bracket 53z is fixed between the high end 31z of the partition 3zD and the filter element 12z, and the retaining bracket 53z is at least partially arranged opposite the guide groove 310z to retain the second seal 52z at least partially within the guide groove 310z. Preferably, the retaining bracket 53z is arranged below the high end 31z of the partition 3zD, and the retaining bracket 53z is surrounded by the inner wall 1112z of the open end 111z of the shell 11z.Preferably, the retaining bracket 53z is fixed to the partition 3zD by welding, and can be fixed to the partition 3zD by other means such as screwing. More preferably, the retaining bracket 53z is integrally formed with the partition 3zD. Preferably, the retaining bracket 53z further has a notch 531z through which a user can use a screwdriver or other simple tool to remove the second seal 52z disposed in the guide slot 310z. It will be appreciated that the first seal 51z is disposed on the outer wall 1111z of the open end 111z of the housing 11z, and the second seal 52z is disposed in the guide slot 310z of the partition 3zD, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0231] As shown in FIGS. 2A-3E, further, the present application provides a filter bottle assembly comprising a filter bottle 1z, a filter bottle cap 2z and a partition 3z, wherein the filter bottle 1z comprises a housing 11z, the partition 3z comprises a high end 31z and a low end 32z, the housing 11z comprises an open end 111z, a connecting portion 113z and an extension portion 112z, wherein the connecting portion 113z extends between the open end 111z and the extension portion 112z, wherein the housing 11z has a receiving cavity 110z having a mounting opening 1101z formed on the open end 111z of the housing 11z, wherein the filter bottle cap 2z is adapted to be detachably connected to the outer side wall 1131z of the connecting portion 113z of the housing 11z, the high end 31z of the partition 3z extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2z, and wherein the partition 3z is arranged to be rotatable relative to the filter bottle cap 2z. Preferably, the extension portion 112z extends from the connecting portion 113z, and the high end 31z of the partition 3z extends upwardly and inwardly from the low end 32z to the inner side of the filter bottle cap 2z. Preferably, the low end 32z of the partition 3z is arranged between the inner side wall 24z of the filter bottle cap 2z and the outer wall 1111z of the open end 111z of the housing 11z, and wherein when the filter bottle cap 2z is connected to the connecting portion 113z of the housing 11z and the filter bottle cap 2z is in physical contact with the partition 3z, the filter bottle cap 2z is capable of driving the partition 3z to move relative to the open end 111z of the housing 11z of the filter bottle 1z.

[0232] Referring to FIGS. 14-18 of the drawings, a filter bottle device according to a fifth embodiment of the present application is illustrated, wherein the filter bottle device comprises a filter bottle ly, a filter element 13y, a filter bottle cap 2y and a partition 3y, wherein the filter bottle cap 2y is detachably connected to the filter bottle ly, and the partition 3y is configured to be rotatable relative to the filter bottle cap 2y. More specifically, the filter bottle ly of the filter bottle device forms a receiving cavity 110y, the filter element 13y is disposed within the receiving cavity 110y of the filter bottle, wherein the filter element 13y and the filter bottle ly form an outer flow passage 1301y therebetween, the filter element 13y has an inner flow passage 1302y, the filter bottle cap 2y forms a connecting portion 23y and an extension wall 22y, wherein the connecting portion 23y is adapted to be detachably connected to an outer wall 111y of the filter bottle ly, the partition 3y comprises a first sealing portion 31y and a second sealing portion 32y, the second sealing portion 32y of the partition 3y extends from the first sealing portion 31y, wherein the second sealing portion 32y of the partition 3y forms a through hole 30y, the first sealing portion 31y is at least partially disposed within the receiving cavity 110y of the filter bottle ly, the filter element 13y is located between the partition 3y and the filter bottle ly, at least one second sealing member 52y is disposed between the extension wall 22y of the filter bottle cap 2y and the second sealing portion 32y of the partition 3y, the extension wall 22y is inserted into the through hole 30y of the second sealing portion 32y, and an outer diameter D1 of the first sealing portion 31y is greater than an inner diameter D2 of the through hole 30y of the second sealing portion 32y, so that the partition 3y can be driven to rotate relative to the filter bottle cap 2y with the extension wall 22y as a rotation axis.In other words, due to the insertion of the elongated wall 22y of the filter bottle cap 2y into the through hole 30y of the second sealing portion 32y and the outer diameter D1 of the first sealing portion 31y is larger than the inner diameter D2 of the through hole 30y of the second sealing portion 32y, when the user rotates the filter bottle 1y to install the filter bottle 1y to the filter bottle cap 2y, the torque generated by the friction between the first sealing portion 31y of the partition 3y and the filter bottle 1y will be larger than the torque generated by the friction between the second sealing portion 32y of the partition 3y and the elongated wall 22y of the filter bottle cap 2y, thus the partition 3y is easily driven to rotate by the filter bottle 1y and the filter bottle 1y only experiences a small resistance (the resistance generated by the relative translation between the first sealing portion 31y of the partition 3y and the filter bottle 1y) during the installation process and the filter bottle 1y is easily installed to the filter bottle cap 2y; when the user rotates the filter bottle 1y to detach the filter bottle 1y from the filter bottle cap 2y, due to the outer diameter D1 of the first sealing portion 31y is larger than the inner diameter D2 of the second sealing portion 32y, the torque generated by the friction between the first sealing portion 31y of the partition 3y and the filter bottle 1y will be larger than the torque generated by the friction between the second sealing portion 32y of the partition 3y and the elongated wall 22y of the filter bottle cap 2y, thus the partition 3y is easily driven to rotate by the filter bottle 1y and the filter bottle 1y only experiences a small resistance (the resistance generated by the relative translation between the first sealing portion 31y of the partition 3y and the filter bottle 1y) during the detachment process and the filter bottle 1y is easily detached from the filter bottle cap 2y. Preferably, the connecting portion 23y of the filter bottle cap 2y is arranged around the elongated wall 22y. It is worth noting that in order to ensure that the torque generated by the friction between the first sealing portion 31y of the partition 3y and the filter bottle 1y is larger than the torque generated by the friction between the second sealing portion 32y of the partition 3y and the elongated wall 22y of the filter bottle cap 2y, making the installation and detachment of the filter bottle 1y more easily and smoothly, the ratio of the outer diameter D1 of the first sealing portion 31y to the inner diameter D2 of the through hole 30y of the second sealing portion 32y should be no less than 5 / 4, so that the outer diameter D1 of the first sealing portion 31y is large enough than the inner diameter D2 of the second sealing portion 32y.

[0233] As shown in FIGS. 14-18, the filter bottle device of the present application further comprises at least one first sealing member 51y and at least one second sealing member 52y, wherein the at least one first sealing member 51y is arranged on the outer wall of the first sealing portion 31y of the partition member 3y, more specifically, the at least one first sealing member 51y is arranged between the filter bottle 1y and the first sealing portion 31y of the partition member 3y, and the at least one second sealing member 52y is arranged between the filter bottle cap 2y and the second sealing portion 32y of the partition member 3y. Those skilled in the art can understand that the at least one first sealing member 51y is arranged to ensure the sealing between the filter bottle 1y and the first sealing portion 31y of the partition member 3y and to ensure that the filter bottle 1y and the first sealing portion 31y of the partition member 3y can generate appropriate frictional force, and the at least one second sealing member 52y is arranged to ensure the sealing between the filter bottle cap 2y and the second sealing portion 32y of the partition member 3y, but it is not necessary to ensure that the frictional force between the filter bottle cap 2y and the second sealing portion 32y of the partition member 3y is large enough. Those skilled in the art can understand that the at least one first sealing member 51y is pressed between the filter bottle 1y and the first sealing portion 31y of the partition member 3y to ensure the sealing between the filter bottle 1y and the first sealing portion 31y of the partition member 3y and to ensure that the filter bottle 1y and the first sealing portion 31y of the partition member 3y can generate appropriate frictional force, and the at least one second sealing member 52y is pressed between the filter bottle cap 2y and the second sealing portion 32y of the partition member 3y, which only needs to ensure the sealing between the filter bottle cap 2y and the second sealing portion 32y of the partition member 3y. Those skilled in the art can understand that the at least one first sealing member 51y can be regarded as a part of the first sealing portion 31y of the partition member 3y, and the at least one second sealing member 52y can be regarded as a part of the second sealing portion 32y of the partition member 3y. Therefore, no matter whether the sealing between the filter bottle 1y and the first sealing portion 31y of the partition member 3y is realized by the first sealing portion 31y or by the first sealing portion 31y and the at least one first sealing member 51y together, and whether the sealing between the filter bottle cap 2y and the second sealing portion 32y of the partition member 3y is realized by the second sealing portion 32y or by the second sealing portion 32y and the at least one second sealing member 52y together, all should be within the protection scope of the present application. Further, the size of the first sealing member 51y is larger than the size of the second sealing member 52y. It is worth mentioning that "the size of the first sealing member 51y is larger than the size of the second sealing member 52y" means that the circumference (or radius, diameter) of the circular ring surrounded by the first sealing member 51y is larger than the circumference (or radius, diameter) of the circular ring surrounded by the second sealing member 52y.

[0234] As shown in FIGS. 14-18 of the accompanying drawings, the filter bottle device of the present application further comprises a restraining member 4y connected to the filter bottle cap 2y for restraining the partition 3y from being detached from the filter bottle cap 2y.

[0235] As shown in FIGS. 14-18 of the accompanying drawings, preferably, the second sealing portion 32y of the partition 3y of the filter bottle device of the present application is partially sandwiched between the top portion 24y of the filter bottle cap 2y and the restraining member 4y. More particularly, the restraining member 4y is fixedly connected to the elongated wall 22y of the filter bottle cap 2y, and the restraining member 4y is at least partially disposed below the second sealing portion 32y which is at least partially disposed below the top portion 24y of the filter bottle cap 2y, such that the second sealing portion 32y of the partition 3y is partially sandwiched between the restraining member 4y and the top portion 24y of the filter bottle cap 2y. Preferably, the top portion 24y of the filter bottle cap 2y is located above the second sealing portion 32y of the partition 3y.

[0236] In order to more obviously embody the advantages of the present application, the filter bottle device is exemplified by a detachable connection between the filter bottle cap 2y and the filter bottle 1y in a rotating manner. For example, the filter bottle cap 2y and the filter bottle 1y are connected in a rotating manner by a threaded structure or a rotating buckle structure. Specifically, during the screwing and unscrewing of the filter bottle cap 2y and the filter bottle 1y, the filter bottle cap 2y rotates relative to the filter bottle 1y. Since the outer diameter D1 of the first sealing part 31y is larger than the inner diameter D2 of the second sealing part 32y (or the size of the first sealing member 51y is larger than the size of the second sealing member 52y), the resistance of the first sealing member 51y (and the first sealing part 31y) to rotation is greater than the driving force of the second sealing member 52y (and the second sealing part 32y) to rotation, so that the filter bottle cap 2y cannot basically drive the partition piece 3y to rotate, and the partition piece 3y basically does not rotate relative to the filter bottle 1y, but only moves in translation relative to the filter bottle 1y. This largely eliminates the resistance of the large-size sealing member to the relative rotation of the filter bottle cap 2y and the filter bottle 1y, and greatly reduces the difficulty of screwing and unscrewing the filter bottle cap 2y and the filter bottle 1y. When screwing, it is not necessary to tighten tightly, but only to rotate to a predetermined position to ensure that the partition piece 3y is inserted into the filter bottle 1y to a certain depth, and the relative rotation of the two is basically not hindered by the large-size sealing member, and it is easy to rotate. Accordingly, when unscrewing, it is also relatively easy. In other words, the present application creatively separates the "fixing" and "sealing" between the filter bottle cap 2y and the filter bottle 1y as much as possible, and uses the partition piece 3y to replace the filter bottle cap 2y to bear most of the "sealing", so that the filter bottle cap 2y and the filter bottle 1y are more easily screwed and unscrewed. In addition, since the partition piece 3y can basically not rotate relative to the filter bottle 1y, the first sealing member 51y is less likely to be twisted, and the risk of sealing failure and water leakage can be reduced. It can be understood that if the filter bottle 1y is connected to the filter bottle cap 2y by rotating the filter bottle 1y, the partition piece 3y will rotate under the driving of the filter bottle 1y due to the resistance of the friction between the filter bottle 1y and the partition piece 3y, and the filter bottle 1y is driven to move in translation relative to the first sealing part 31y of the partition piece 3y.

[0237] It can be understood that the first sealing part 31y of the partition piece 3y of the filter bottle device is circularly arranged to further support the bottle wall of the filter bottle 1y transversely (radially) from the inside of the filter bottle 1y, such as transmitting force through the first sealing piece 51y, not only to make the structure more stable, but also to facilitate the effectiveness of the seal. Moreover, the partition piece 3y can be a rigid piece made of rigid material, and the first sealing part 31y of the partition piece 3y is at least partially pressed against the inner side wall 112y of the filter bottle 1y, so that the partition piece 3y can support the inner side wall 112y of the filter bottle 1y radially from the inside of the filter bottle 1y, so that it is easier to form and maintain a higher roundness compared to the filter bottle cap 2y, so that the partition piece 3y and the filter bottle 1y can be selected with a smaller compression amount compared to the conventional sealing method (compression sealing method). The first sealing piece 51y can be used multiple times without the need to replace the filter core 13y each time. Those skilled in the art can know that the first sealing part 31y is arranged to at least partially contact the inner side wall 112y of the filter bottle 1y, which can be the first sealing part 31y itself pressing against the inner side wall 112y of the filter bottle 1y, or indirectly pressing against the inner side wall 112y of the filter bottle 1y through the first sealing piece 51y. Moreover, the first sealing piece 51y with smaller compression amount also makes the relative translation between the partition piece 3y and the filter bottle 1y less obstructed, which is beneficial to further reduce the difficulty of screwing and unscrewing the filter bottle cap 2y and the filter bottle 1y.

[0238] As shown in FIGS. 14 to 18 of the accompanying drawings, preferably, the second sealing portion 32y of the partition 3y of the filter bottle device of the present application extends upwardly and inwardly from the first sealing portion 31y, so that the angle a between the second sealing portion 32y and the first sealing portion 31y is obtuse, to improve the force resistance of the partition 3y and prevent the deformation of the partition 3y. Accordingly, the second sealing portion 32y of the partition 3y is arranged between the filter bottle cap 2y and the first sealing portion 31y of the partition 3y. Preferably, the angle a formed by the first sealing portion 31y and the second sealing portion 32y is greater than 90 degrees and less than 135 degrees. In addition, the angle a between the second sealing portion 32y and the first sealing portion 31y is obtuse, allowing the first sealing portion 31y to form a cylindrical space 310y. Accordingly, the first sealing portion 31y of the partition 3y of the filter bottle device of the present application is hollow cylindrical, so that the filter element 13y can be inserted into the cylindrical space 310y formed by the first sealing portion 31y, thereby minimizing the height dimension of the entire filter bottle 1y and ensuring that the improved filter bottle cap 2y, filter bottle 1y and partition 3y of the filter bottle device of the present application can use existing filter elements and maintain the height dimension of the entire filter bottle device as much as possible, so that the filter bottle device of the present application is more convenient to install in existing water treatment machines.

[0239] As shown in FIGS. 14 to 18 of the accompanying drawings, preferably, the partition 3y of the filter bottle device of the present application further comprises a set of reinforcing ribs 33y, wherein the reinforcing ribs 33y are arranged on the inner wall of the second sealing portion 32y along the extension direction of the second sealing portion 32y. The reinforcing ribs 33y of the partition 3y can strengthen the strength of the second sealing portion 32y and the entire partition 3y, to prevent the deformation thereof under force, thereby maintaining the roundness of the first sealing portion 31y of the partition 3y. Alternatively, the reinforcing ribs 33y are arranged on the outer wall of the second sealing portion 32y along the extension direction of the second sealing portion 32y. That is, the reinforcing ribs 33y are arranged on the outer wall and / or inner wall of the second sealing portion 32y along the extension direction of the second sealing portion 32y.

[0240] As shown in FIG. 15, the filter bottle cover 2y of the filter bottle device of the present application further forms a flow-through portion 21y, wherein the flow-through portion 21y has a fluid passage 210y for the inflow or outflow of fluid. Specifically, the fluid passage 210y of the flow-through portion 21y of the filter bottle device of the present application includes a first fluid passage 2101y and a second fluid passage 2102y, wherein one of the first fluid passage 2101y and the second fluid passage 2102y is used for the inflow of raw water, and the other is used for the outflow of purified water. When the first fluid passage 2101y is used as the inflow passage of raw water, the second fluid passage 2102y is used as the outflow passage of purified water; when the first fluid passage 2101y is used as the outflow passage of purified water, the second fluid passage 2102y is used as the inflow passage of raw water. As shown in FIG. 15, the first fluid passage 2101y of the flow-through portion 21y of the filter bottle device of the present application is formed between the outer peripheral wall 211y of the flow-through portion 21y and the inner peripheral wall 212y of the flow-through portion 21y, and the second fluid passage 2102y is formed on the inner side of the inner peripheral wall 212y. Preferably, the outer peripheral wall 211y of the flow-through portion 21y extends in the axial direction to form the elongated wall 22y. Accordingly, the elongated wall 22y is arranged around the first fluid passage 2101y and the second fluid passage 2102y, and in order to ensure that the inner diameters of the first fluid passage 2101y and the second fluid passage 2102y are large enough, the ratio of the outer diameter D1 of the first sealing portion 31y to the inner diameter D2 of the through hole 30y of the second sealing portion 32y should not be greater than 6 / 1. It can be understood that the first fluid passage 2101y and the second fluid passage 2102y can be a snap-fit interface (convenient for the filter bottle device of the present application to be connected to the snap-fit interface of other equipment), or can be formed as a threaded opening (convenient for the filter bottle device of the present application to be connected to other pipelines) according to needs, and in addition, the first fluid passage 2101y and the second fluid passage 2102y can also be arranged as the raw water inflow opening and the purified water outflow opening arranged horizontally as shown in FIG. 1 or FIG. 22B according to needs.

[0241] As shown in FIGS. 22A to 23D, preferably, the first fluid passage 2101y and the second fluid passage 2102y of the filter bottle cover 2y of the filter bottle device of the present application are at least partially located on a straight line. More preferably, the first fluid passage 2101y and the second fluid passage 2102y are at least partially arranged horizontally to facilitate horizontal connection of the filter bottle device of the present application and the pipeline.

[0242] As shown in FIG. 15 (FIG. 19, FIG. 21 or FIG. 22B), preferably, the partition 3y and the filter element 13y of the filter bottle device of the present application form a through channel 301y therebetween, wherein the through channel 301y is in communication with the first fluid channel 2101y and the outer flow passage 1301y, respectively, and the second fluid channel 2102y is in communication with the inner flow passage 1302y. Preferably, the inner peripheral wall 212y of the flow passage 21y is water-tightly arranged in the filter element 13y, so that the inner peripheral wall 212y can separate the first fluid channel 2101y (and the through channel 301y) from the second fluid channel 2102y water-tightly.

[0243] As shown in FIGS. 15 to 17, in particular, the elongated wall 22y of the filter bottle cap 2y of the filter bottle device of the present application is inserted into the through hole 30y of the partition 3y, wherein the through hole 30y is formed in the second sealing portion 32y of the partition 3y, the second sealing member 52y is arranged between the second sealing portion 32y of the partition 3y and the elongated wall 22y, and the first fluid channel 2101y and the second fluid channel 2102y are both arranged inside the through hole 30y of the partition 3y. When the filter bottle cap 2y and the partition 3y are relatively rotated, the elongated wall 22y can be regarded as a rotation axis. It is worth mentioning that the extension direction of the central axis of the rotation axis is the axial direction, and the above-mentioned "lateral (radial)" direction refers to the direction perpendicular to the axial direction.

[0244] As shown in FIGS. 15 to 18, the constraint 4y and the filter element 13y of the filter bottle device of the present application form a first communication channel 401y therebetween, wherein the first communication channel 401y is in communication with the first fluid channel 2101y and the through channel 301y, respectively. It can be understood that the constraint 4y of the filter bottle device of the present application can be integrally formed with the elongated wall 22y. Accordingly, the constraint 4y can be regarded as a part of or formed from the elongated wall 22y, and the first communication channel 401y can be regarded as a part of the through channel 301y.

[0245] As shown in FIGS. 15-18, more specifically, the constraint member 4y comprises a fixed portion 41y and a constraint portion 42y, wherein the constraint portion 42y extends from the fixed portion 41y, the fixed portion 41y is connected to the extension wall 22y, and the constraint portion 42y is used to constrain the partition member 3y. The constraint portion 42y of the constraint member 4y and the filter element 13y form a first communication passage 401y therebetween, and the fixed portion 41y of the constraint member 4y and the inner peripheral wall 212y of the flow passage 21y form a second communication passage 402y therebetween. The first communication passage 401y is in communication with the second communication passage 402y and the guide passage 301y, respectively, and the second communication passage 402y is in communication with the first fluid passage 2101y and the first communication passage 401y, respectively.

[0246] As shown in FIGS. 15-18, preferably, the outer peripheral wall 211y of the flow passage 21y further extends along the axial direction to form the extension wall 22y. In other words, the extension wall 22y is configured as a part of the outer peripheral wall 211y. The second sealing portion 32y of the partition member 3y is constrained between the filter bottle cap 2y and the constraint portion 42y of the constraint member 4y. The constraint member 4y is provided with a communication passage 40y, wherein the communication passage 40y is formed in the fixed portion 41y, and the fixed portion 41y is connected to the extension wall 22y to make the communication passage 40y in communication with the first fluid passage 2101y. It can be understood that when the fixed portion 41y is arranged on the extension wall 22y, the fixed portion 41y and the extension wall 22y do not need to be sealed, which facilitates the connection of the fixed portion 41y and the extension wall 22y. Preferably, the fixed portion 41y of the constraint member 4y is arranged on the extension wall 22y by screwing. It can be understood that the connection structure between the fixed portion 41y and the extension wall 22y includes but is not limited to screwing, threaded connection, buckle connection, interference fit, etc., or even an additional connecting member can be used to connect the fixed portion 41y and the extension wall 22y.

[0247] Further, as shown in Fig. 15, taking the first fluid passage 2101y as the inflow passage of raw water and the second fluid passage 2102y as the outflow passage of purified water as an example. The filter bottle device further comprises the filter element 13y, and in some fifth embodiments, it is also possible to further comprise a filter element adapter 6y arranged between the flow passage portion 21y and the filter element 13y, wherein the purified water outlet of the filter element 13y or the purified water outlet 61y of the filter element adapter 6y is sealingly connected to the inner peripheral wall 212y of the flow passage portion 21y. Raw water flows in from the first fluid passage 2101y, flows through the communication passage 40y of the constraint member 4y, further flows along the lower part of the constraint member 4y and the barrier member 3y, is jointly sealed by the first sealing member 51y and the second sealing member 52y, and then flows into the filter element 13y. Purified water purified by the filter element 13y is discharged from the purified water outlet or the purified water outlet 61y of the filter element adapter 6y, and finally flows out through the second fluid passage 2102y.

[0248] As shown in Fig. 14 and Fig. 20, the filter bottle device further comprises at least one locking unit 7y, wherein the locking unit 7y comprises a first locking member 71y, a second locking member 72y and a locking plug 73y, wherein the first locking member 71y is arranged on the outer side wall 111y of the filter bottle 1y, the second locking member 72y is arranged on the outer wall of the filter bottle cap 2y, and when the first locking member 71y and the second locking member 72y are aligned, a positioning slot 710y can be formed, wherein the locking plug 73y is arranged to be inserted into the positioning slot 710y to keep the first locking member 71y and the second locking member 72y in the locked position. It can be understood that the filter bottle device is arranged such that when the filter bottle cap 2y is rotated to the position where the first locking member 71y and the second locking member 72y are in contact and aligned, the filter bottle cap 2y is screwed into the preset position of the filter bottle 1y to ensure that the barrier member 3y is inserted into the filter bottle 1y to a certain depth, at which time the locking plug 73y is inserted into the positioning slot 710y to keep the first locking member 71y and the second locking member 72y in the locked position, keeping the filter bottle cap 2y screwed into the preset position. It can be understood that when the filter bottle cap 2y is screwed into the preset position of the filter bottle 1y, the filter bottle cap 2y and the filter bottle 1y do not need to be tightened due to the anti-loosening effect of the locking unit 7y, so that they can be easily unscrewed in the future. Because excessive tightening makes it difficult to unscrew, especially when the filter bottle cap 2y and the filter bottle 1y are made of plastic material and are subjected to the continuous action of water pressure during the operation of the filter bottle device, they will deform and engage together, making it difficult to easily unscrew.

[0249] In summary, the technical solution based on the core idea of the present application has been illustrated, which is not only applicable to the double-port filter bottle device shown in FIG. 15 and FIG. 22B, i.e., the flow-through part 21y only includes two types of ports, the first fluid passage 2101y and the second fluid passage 2102y, but also applicable to the triple-port filter bottle device shown in FIG. 19, i.e., the fluid passage 210y of the flow-through part 21y further includes a third fluid passage 2103y for waste discharge. In other words, the core idea of the present application is not limited by the type and number of the fluid passage 210y of the flow-through part 21y.

[0250] As shown in FIG. 19, specifically, the filter bottle cover 2ya of the three-port filter bottle device includes a flow-through portion 21ya having a fluid passage 210ya, which includes a first fluid passage 2101y, a second fluid passage 2102y, and a third fluid passage 2103y, wherein the first fluid passage 2101y is formed between an outer peripheral wall 211y of the flow-through portion 21ya and a first inner peripheral wall 212ya of the flow-through portion 21ya, the second fluid passage 2102y is formed between the first inner peripheral wall 212ya and a second inner peripheral wall 212yb of the flow-through portion 21ya, and the third fluid passage 2103y is formed inside the second inner peripheral wall 212yb. Taking the first fluid passage 2101y as an inlet passage for raw water, the second fluid passage 2102y as an outlet passage for purified water, and the third fluid passage 2103y as an outlet passage for sewage as examples. The filter bottle device further includes a filter element 13ya and a sewage discharge pipe, which is illustratively inserted into the outlet passage for purified water of the filter element 13ya, wherein the purified water outlet of the filter element 13ya is sealingly connected to the first inner peripheral wall 212ya of the flow-through portion 21ya, and the sewage discharge pipe is sealingly connected to the second inner peripheral wall 212yb of the flow-through portion 21ya. Raw water flows in from the first fluid passage 2101y, flows through the communication passage 40y of the constraint member 4y, further flows along the constraint member 4y and below the partition member 3y, is jointly sealed by the first sealing member 51y and the second sealing member 52y, then flows into the filter element 13ya, the purified water purified by the filter element 13ya is discharged from the purified water outlet, and finally flows out through the second fluid passage 2102y, and sewage flows into the third fluid passage 2103y through the sewage discharge pipe and is discharged. The first fluid passage 2101y, the second fluid passage 2102y, and the third fluid passage 2103y are all arranged inside the through hole 30y of the partition member 3y. It can be understood that the filter element 13ya can be a reverse osmosis membrane filter element or a three-port ultrafiltration membrane filter element; the first fluid passage 2101y, the second fluid passage 2102y, and the third fluid passage 2103y can be a clamping interface, or can be formed with threaded openings as needed.

[0251] An alternative embodiment of the three-port filter bottle device is shown in FIG. 21, which comprises a filter bottle 1yb, a filter bottle cap 2yb, the partition 3y, the constraint 4y, the first seal 51y and the second seal 52y, the filter bottle cap 2yb comprises a flow-through portion 21yb having a fluid passage 210yb, the fluid passage 210yb comprises a first fluid passage 2101yb, the filter bottle 1yb comprises a second fluid passage 2102yb and a third fluid passage 2103yb, wherein the outer peripheral wall 211yb of the flow-through portion 21yb forms the first fluid passage 2101yb, the filter bottle 1yb has an upper end portion 11yb and a lower end portion 12yb extending downward from the upper end portion 11yb of the filter bottle, the second fluid passage 2102yb and the third fluid passage 2103yb of the filter bottle 1yb are respectively provided at the lower end portion 12yb of the filter bottle 1yb, wherein the second fluid passage 2102yb is formed at the central region 121yb of the lower end portion 12yb, and the third fluid passage 2103yb is formed at the edge region 122yb extending outward from the central region 121yb of the lower end portion 12yb. Taking the first fluid passage 2101yb as the inflow passage of raw water, the second fluid passage 2102yb as the outflow passage of purified water, and the third fluid passage 2103yb as the outflow passage of sewage as examples. The filter bottle device further comprises a filter core 13yb, and the purified water outlet of the filter core 13yb is sealingly connected to the central region 121yb of the lower end portion 12yb. Raw water flows into the first fluid passage 2101yb, flows further along the constraint 4y and the partition 3y below after flowing through the communication passage 40y of the constraint 4y, and is jointly sealed by the first seal 51y and the second seal 52y, and then flows into the filter core 13yb. Purified water purified by the filter core is discharged from the purified water outlet, and finally flows out through the second fluid passage 2102yb. Sewage is discharged through the third fluid passage 2103yb. The first fluid passage 2101yb is provided inside the through hole 30y of the partition 3y. It can be understood that the filter core 13yb can be a reverse osmosis membrane filter core or a three-port ultrafiltration membrane filter core; the first fluid passage 2101yb, the second fluid passage 2102yb and the third fluid passage 2103yb can form threaded openings, or can form quick-connection interfaces as needed.

[0252] According to another aspect of the present application, the present application further provides a filter bottle assembly comprising a filter bottle 1y, a filter bottle cap 2y (or filter bottle cap 2ya, filter bottle cap 2yb), a partition 3y and a constraint 4y, wherein the filter bottle cap 2y (or filter bottle cap 2ya, filter bottle cap 2yb) is adapted to be detachably connected to the filter bottle 1y (or filter bottle 1yb), the partition 3y is adapted to be rotatable relative to the filter bottle cap 2y, the constraint 4y is connected to the filter bottle cap 2y and adapted to constrain the partition 3y to prevent the partition 3y from being detached from the filter bottle cap 2y, wherein the partition 3y comprises a first sealing portion 31y and a second sealing portion 32y, wherein a first sealing member 51y is adapted to be provided between the first sealing portion 31y and the filter bottle 1y, and a second sealing member 52y is provided between the second sealing portion 32y and the filter bottle cap 2y, and wherein the first sealing member 51y has a size larger than that of the second sealing member 52y.

[0253] According to another aspect of the present application, the present application further provides a filter bottle cap assembly comprising a filter bottle cap 2y (or filter bottle cap 2ya, filter bottle cap 2yb), a partition 3y and a constraint 4y, wherein the filter bottle cap 2y (or filter bottle cap 2ya, filter bottle cap 2yb) is adapted to be detachably connected to the filter bottle 1y (or filter bottle 1yb), the partition 3y is adapted to be rotatable relative to the filter bottle cap 2y, the constraint 4y is connected to the filter bottle cap 2y and adapted to constrain the partition 3y to prevent the partition 3y from being detached from the filter bottle cap 2y, wherein the partition 3y comprises a first sealing portion 31y and a second sealing portion 32y, wherein a first sealing member 51y is adapted to be provided between the first sealing portion 31y and the filter bottle 1y, and a second sealing member 52y is provided between the second sealing portion 32y and the filter bottle cap 2y, and wherein the first sealing member 51y has a size larger than that of the second sealing member 52y.

[0254] Referring to FIGS. 24A-27B of the drawings, a filter bottle device according to a sixth embodiment of the present application is illustrated, which includes a filter bottle 1K, a filter cartridge 12K, a filter bottle cap 2K, a partition 3K and a first sealing member 51K, wherein the filter bottle 1K includes a housing 11K having an open end 111K and an extension 112K extending from the open end 111K, wherein the housing 11K has a receiving cavity 110K in which the filter cartridge 12K is disposed, and the receiving cavity 110K has a mounting opening 1101K formed at the open end 111K of the housing 11K, wherein the filter bottle cap 2K is adapted to be detachably disposed at an outer sidewall 1111K of the open end 111K of the housing 11K of the filter bottle 1K, the partition 3K is movably disposed at an inner sidewall 1112K of the open end 111K of the housing 11K, and the first sealing member 51K is disposed between the inner sidewall 1112K of the filter bottle 1K and the partition 3K, wherein when the filter bottle cap 2K is disposed at the outer sidewall 1111K of the open end 111K of the housing 11K of the filter bottle 1K, the filter bottle cap 2K is capable of abutting against a top end 31K of the partition 3K, so that when the filter bottle cap 2K fastens the outer sidewall 1111K of the open end 111K of the housing 11K of the filter bottle 1K, the filter bottle cap 2K is capable of pressing and driving the partition 3K to move relative to the open end 111K of the housing 11K of the filter bottle 1K. Preferably, the filter cartridge 12K and the housing 11K form a water cavity 120K therebetween.

[0255] In order to more obviously embody the advantages of the present application, the filter bottle cap 2K and the filter bottle 1K are exemplarily implemented in a detachable connection manner of rotation, such as a threaded structure or a rotating buckle structure, and it can be understood that the filter bottle cap 2K and the filter bottle 1K can also be detachably connected by a clamp or other appropriate means. Specifically, when the filter bottle cap 2K is screwed onto the outer side wall 1111K of the opening end 111K of the shell 11K of the filter bottle 1K, the filter bottle cap 2K rotates relative to the filter bottle 1K and moves towards the extension 112K of the shell 11K, so that the filter bottle cap 2K can press and drive the partition 3K to move relative to the opening end 111K of the shell 11K of the filter bottle 1K and move towards the extension 112K of the shell 11K. Accordingly, during this process, the torque of the rotating friction force (driving force) exerted by the filter bottle cap 2K on the top end 31K of the partition 3K is smaller than the torque of the rotating resistance force exerted by the first seal 51K between the inner side wall 1112K of the filter bottle 1K and the partition 3K, so that the filter bottle cap 2K cannot basically drive the partition 3K to rotate, and thus the partition 3K basically does not rotate relative to the inner side wall 1112K of the opening end 111K of the shell 11K of the filter bottle 1K, but only translates relative to the inner side wall 1112K of the opening end 111K of the shell 11K of the filter bottle 1K, thereby basically eliminating the resistance of the large-size seal to the relative rotation of the filter bottle cap 2K and the filter bottle 1K, and greatly reducing the difficulty of screwing the filter bottle cap 2K and the filter bottle 1K. When screwing the filter bottle cap 2K, it is not necessary to screw it tightly, but only needs to be rotated to a predetermined position to ensure that the partition 3K is inserted into the opening end 111K of the shell 11K of the filter bottle 1K to a certain depth, and the relative rotation of the two is basically not hindered by the large-size seal, and it is very easy to rotate. Accordingly, when the filter bottle cap 2K is unscrewed (or removed) from the outer side wall 1111K of the opening end 111K of the shell 11K of the filter bottle 1K, it is also relatively easy. In other words, the present application creatively separates the "fixing" and "sealing" between the filter bottle cap 2K and the filter bottle 1K as much as possible, uses the partition 3K to replace the filter bottle cap 2K to bear the "sealing" function, so that the filter bottle cap 2K and the filter bottle 1K are more easily screwed and unscrewed. In addition, since the partition 3K basically does not rotate relative to the filter bottle 1K, the first seal 51K is less likely to be twisted, thereby reducing the risk of sealing failure and water leakage.

[0256] It can be understood that the partition 3K is arranged to be able to support the open end 111K (the bottle wall of the open end 111K) of the shell 11K of the filter bottle 1K from the inside of the shell 11K of the filter bottle 1K in a transverse (radial) direction, such as by transmitting force through the first sealing piece 51K, not only to make the structure more stable, but also to facilitate ensuring the effectiveness of the seal. Moreover, the partition 3K is easier to form and maintain a higher degree of roundness than the filter bottle cap 2K, so that the partition 3K and the filter bottle 1K can select a sealing piece with a smaller compression amount than the conventional sealing method, thereby enabling the first sealing piece 51K to be used multiple times without the need to replace the first sealing piece 51K each time the filter element is replaced. Moreover, the first sealing piece 51K with a smaller compression amount also makes it easier for the partition 3K and the filter bottle 1K to move relative to each other, which facilitates further reducing the difficulty of tightening and opening the filter bottle cap 2K and the filter bottle 1K.

[0257] As shown in FIGS. 24A to 27B of the accompanying drawings, the filter bottle cap 2K comprises an opening portion 21K and a connecting portion 22K extending from the opening portion 21K, and the partition 3K comprises the top end 31K, a mounting end 32K and a through portion 33K, wherein the mounting end 32K and the through portion 33K integrally extend from two opposite sides of the top end 31K respectively, wherein the opening portion 21K forms a through opening 210K, and the through portion 33K forms a through passage 330K, wherein the through passage 330K is adapted to communicate with the water cavity 120K or the filter element 12K, and the through portion 33K penetrates out of the through opening 210K of the opening portion 21K. Preferably, the top end 31K and the mounting end 32K surround a through cavity 320K, wherein the through cavity 320K is adapted to communicate with the through passage 330K and the water cavity 120K or the filter element 12K respectively, and the through portion 33K penetrates out of the through opening 210K of the opening portion 21K. It can be understood that, as shown in FIG. 25A of the accompanying drawings, when the filter bottle device has three openings, the filter bottle 1K further comprises a first fluid passage 1121K and a second fluid passage 1122K, the extension portion 112K of the housing 11K has a lower end portion 1120K, and the first fluid passage 1121K and the second fluid passage 1122K of the filter bottle 1K are arranged at the lower end portion 1120K of the filter bottle 1K respectively, wherein the first fluid passage 1121K is formed in a central region 11201K of the lower end portion 1120K, and the second fluid passage 1122K is formed in an edge region 11202K extending outwardly from the central region 11201K of the lower end portion 1120K.It can be understood that the filter element 12K can be a reverse osmosis membrane filter element or a three-port ultrafiltration membrane filter element. When the filter element 12K is a reverse osmosis membrane filter element, the water cavity 120K is divided into a first water cavity 1201K and a second water cavity 120K2 by a sealing part 121K of the filter element 12K. The first water cavity 1201K is in communication with the through cavity 320K, and the second water cavity 120K2 is in communication with the second fluid channel 1122K. The water inlet end of the filter element 12K is in communication with the first water cavity 1201K (or the through cavity 320K), and the sewage outlet end of the filter element 12K is in communication with the second water cavity 120K2. The purified water outlet of the filter element 12K is sealingly connected to the first fluid channel 1121K. For example, the through channel 330K is used as the inflow channel of raw water, the first fluid channel 1121K is used as the outflow channel of purified water, and the second fluid channel 1122K is used as the outflow channel of sewage. Raw water flows into the through channel 330K, flows into the water inlet end of the filter element 12K through the through cavity 320K, and is purified by the filter element 12K. The purified water is then guided out of the purified water outlet and finally flows out of the first fluid channel 1121K. Sewage flows into the second water cavity 120K2 through the sewage outlet end of the filter element 12K and is then discharged through the second fluid channel 1122K. It can be understood that the through channel 330K, the first fluid channel 1121K, and the second fluid channel 1122K can form threaded openings or quick-connec...

Claims

1. A filter bottle assembly, characterized by, The filter bottle includes: a bottle body; a bottle cap; and a partition including a high end and a low end, wherein the bottle body includes an open end, a connecting portion and an extension portion, wherein the connecting portion extends between the open end and the extension portion, the bottle body has a receiving cavity, wherein the receiving cavity has a mounting opening formed at the open end of the bottle body, wherein the bottle cap is adapted to be detachably connected to an outer sidewall of the connecting portion of the bottle body, the low end of the partition is disposed between an inner sidewall of the bottle cap and an outer wall of the open end of the bottle body, the high end of the partition extends upwardly and inwardly from the low end to an inner side of the bottle cap, and the partition is disposed to be rotatable relative to the bottle cap. Further comprising at least one first seal, wherein the at least one first seal is disposed between the outer wall of the open end of the bottle body and an inner peripheral wall of the low end of the partition.

2. The filter bottle assembly of claim 1, wherein, Further comprising a metal ring, wherein the metal ring is disposed to an outer peripheral wall of the low end of the partition to reduce a deformation or expansion of the low end of the partition when the low end is pressed.

3. The filter bottle assembly of claim 1, wherein, The open end of the bottle body includes a main portion and a sealing portion extending outwardly from the main portion, wherein the first seal is disposed between the sealing portion of the open end and the inner peripheral wall of the low end of the partition.

4. The filter bottle assembly of claim 2, wherein, The low end forms a receiving space along a direction of extension thereof.

5. The filter bottle assembly of claim 4, wherein, The high end of the partition forms a guide slot, wherein the guide slot is disposed adjacent to the low end of the partition and opposite to the open end of the bottle body, and a top end of the open end of the bottle body is disposed to be placed in the guide slot.

6. The filter bottle assembly of claim 1, wherein, Further comprising a second seal, wherein the second seal is disposed between an inner wall of the open end of the bottle body and a slot wall of the guide slot.

7. The filter bottle assembly of claim 6, wherein, Further comprising a retaining holder, wherein the retaining holder is at least partially disposed opposite to the guide slot to retain the second seal at least partially in the guide slot.

8. The filter bottle assembly of claim 7, wherein, The retaining holder is disposed below the high end of the partition, and the retaining holder is surrounded by the inner wall of the open end of the bottle body.

9. The filter bottle assembly of claim 8, wherein, The retaining holder is fixed to the partition.

10. The filter bottle assembly of claim 9, wherein, The retaining holder further has a notch.

11. The filter bottle assembly of claim 10, wherein, A thickness of the open end of the bottle body is less than a thickness of the connecting portion of the bottle body.

12. The filter bottle assembly of claim 1, wherein, A total thickness of the open end of the bottle body and the low end of the partition is substantially the same as the thickness of the connecting portion of the bottle body.

13. The filter bottle assembly of claim 12, wherein, The high end extends upwardly and inwardly from the low end to the inner side of the bottle cap to make the bottle cap in physical contact with the partition and to make an angle between the high end and the low end obtuse.

14. The filter bottle assembly of claim 1, wherein, The partition further includes a set of reinforcing ribs, wherein the reinforcing ribs are disposed to inner walls of the high end along a direction of extension of the high end.

15. The filter bottle assembly of claim 1, wherein, ​ 16. The filter bottle assembly of any one of claims 1-15, wherein, The filter bottle cap comprises an opening portion and a mounting portion extending from the opening portion, the partition further comprises a through portion, wherein the low end and the through portion are integrally extended from two opposite sides of the high end respectively, wherein the opening portion forms a through opening, the through portion forms a through channel, wherein the through portion penetrates out of the through opening of the opening portion, and wherein the through portion forms a pivot.

17. The filter bottle assembly of claim 16, wherein, The high end and the inner wall of the opening end of the shell form a through cavity; the filter bottle further comprises a first fluid channel and a second fluid channel, the extension portion of the shell has a lower end portion, and the first fluid channel and the second fluid channel of the filter bottle are arranged at the lower end portion of the filter bottle respectively, wherein the first fluid channel is formed in a central region of the lower end portion, and the second fluid channel is formed in an edge region extending outward from the central region of the lower end portion.

18. The filter bottle assembly of claim 16, wherein, Further comprising a limiting member, the partition further comprises a limiting portion, wherein the limiting portion extends outward from the through portion, and the limiting member is adapted to be arranged between the limiting portion and the opening portion of the filter bottle cap.

19. The filter bottle assembly of any one of claims 1-15, wherein, The filter bottle cap comprises an opening portion, a mounting portion extending from the opening portion, and a through portion extending from the opening portion, the high end of the partition forms a through opening, wherein the through portion and the opening portion form a through channel extending from the opening portion to the through portion, wherein the through portion penetrates out of the through opening of the high end, wherein the through portion forms a pivot, and the inner diameter of the low end is greater than the inner diameter of the through opening of the high end.

20. The filter bottle assembly of claim 19, wherein, Further comprising a central sealing member, wherein the central sealing member is arranged between the through portion of the filter bottle cap and the opening inner wall of the through opening of the high end of the partition.

21. The filter bottle assembly of claim 20, wherein, Further comprising a constraint member, wherein the constraint member comprises a fixing portion and a constraint portion, and the constraint portion and the fixing portion of the constraint member are arranged at the high end of the partition and the through portion of the filter bottle cap respectively.

22. The filter bottle assembly of claim 21, wherein, The fixing portion of the constraint member is connected to the through portion, the constraint portion extends from the fixing portion to the high end of the partition, and the central sealing member is constrained between the high end of the partition and the through portion of the filter bottle cap.

23. The filter bottle assembly of claim 22, wherein, The central sealing member is constrained between the high end of the partition and the through portion of the filter bottle cap; the filter bottle further comprises a first fluid channel and a second fluid channel, the extension portion of the shell has a lower end portion, and the first fluid channel and the second fluid channel of the filter bottle are arranged at the lower end portion of the filter bottle respectively, wherein the first fluid channel is formed in a central region of the lower end portion, and the second fluid channel is formed in an edge region extending outward from the central region of the lower end portion.

24. The filter bottle assembly of claim 19, wherein, The inner side of the opening portion of the filter bottle cap is at least partially in physical contact with the upper side of the high end of the partition.

25. The filter bottle assembly of claim 19, wherein, The filter bottle cap further forms a contact portion, wherein the contact portion extends between the mounting portion and the conducting portion, wherein the contact portion is arranged to at least partially contact above the high end of the partition.

26. The filter bottle assembly of claim 25, wherein, The contact portion extends upwardly and inwardly from the mounting portion to the conducting portion.

27. The bottle filtration assembly of claim 19, wherein, The ratio of the inner diameter of the low end to the inner diameter of the through opening of the high end is not less than 5 / 4.

28. The bottle filtration assembly of claim 19, wherein, The ratio of the inner diameter of the low end to the inner diameter of the through opening of the high end is not more than 6 / 1.

29. The bottle filtration assembly of claim 19, wherein, The angle formed by the low end and the high end is greater than 90 degrees and less than 135 degrees.

30. The bottle filtration assembly of claim 19, wherein, Further comprising a constraint, wherein the constraint is fixedly connected to the conducting portion, and the high end of the partition is partially arranged between the top of the filter bottle cap and the constraint.

31. The filter bottle assembly of any one of claims 1-15, wherein, The filter bottle cap comprises an opening portion, a mounting portion extending from the opening portion, and a conducting portion extending from the opening portion, and the high end of the partition forms a through opening, wherein the conducting portion and the opening portion form a first conducting channel extending from the opening portion to the conducting portion and a second conducting channel extending from the opening portion to the conducting portion, wherein the conducting portion penetrates out of the through opening of the high end of the partition, wherein the conducting portion forms a pivot, and the inner diameter of the low end is greater than the inner diameter of the through opening of the high end.

32. The bottle filtration assembly of claim 31, wherein, Further comprising a center seal, wherein the center seal is arranged between the conducting portion of the filter bottle cap and the opening inner wall of the through opening of the high end of the partition.

33. The bottle filtration assembly of claim 32, wherein, Further comprising a constraint, wherein the constraint comprises a fixed portion and a constraint portion, wherein the constraint portion and the fixed portion of the constraint are arranged at the high end of the partition and the conducting portion of the filter bottle cap, respectively.

34. The bottle filtration assembly of claim 33, wherein, The fixed portion of the constraint is connected to the conducting portion, the constraint portion extends from the fixed portion to the high end of the partition, and the center seal is constrained between the high end of the partition and the conducting portion of the filter bottle cap; the constraint is provided with a communication channel, wherein the communication channel is formed in the fixed portion, and the first conducting channel and the second conducting channel both pass through the communication channel.

35. The bottle filtration assembly of claim 31, wherein, The inner side of the opening portion of the filter bottle cap is at least partially in physical contact above the high end of the partition.

36. The bottle filtration assembly of claim 31, wherein, The filter bottle cap further forms a contact portion, wherein the contact portion extends between the mounting portion and the conducting portion, wherein the contact portion is arranged to at least partially contact above the high end of the partition.

37. The bottle filtration assembly of claim 36, wherein, The contact portion extends upwardly and inwardly from the mounting portion to the conducting portion.

38. The bottle filtration assembly of claim 31, wherein, The ratio of the inner diameter of the low end to the inner diameter of the through opening of the high end is not less than 5 / 4.

39. The bottle filtration assembly of claim 31, wherein, The ratio of the inner diameter of the low end to the inner diameter of the through opening of the high end is not more than 6 / 1.

40. The bottle filtration assembly of claim 31, wherein, The angle formed by the low end and the high end is greater than 90 degrees and less than 135 degrees.

41. The bottle filtration assembly of claim 31, wherein, Further comprising a restriction member, wherein the restriction member is fixedly connected to the conducting portion, and the high end of the partition member is partially disposed between the top of the filter bottle cap and the restriction member.

42. The filter bottle assembly of any one of claims 1-15, wherein, The filter bottle cap comprises an opening portion, a mounting portion extending from the opening portion, a conducting portion extending from the opening portion, a first channel forming portion, and a second channel forming portion, the high end of the partition member forms a through opening, wherein the conducting portion extends out of the through opening of the high end, the first channel forming portion is surrounded by the opening portion, the second channel forming portion is surrounded by the first channel forming portion, the first channel forming portion and the opening portion form a first channel therebetween, the first channel forming portion and the second channel forming portion form a second channel therebetween, and the second channel forming portion forms a third channel, wherein the first channel, the second channel, and the third channel are separated from each other by the first channel forming portion and the second channel forming portion, and the inner diameter of the low end is greater than the inner diameter of the through opening of the high end.

43. The bottle filtration assembly of claim 42, wherein, Further comprising a center sealing member, wherein the center sealing member is disposed between the conducting portion of the filter bottle cap and the opening inner wall of the through opening of the high end of the partition member.

44. The bottle filtration assembly of claim 43, wherein, Further comprising a restriction member, wherein the restriction member comprises a fixing portion and a restriction portion, and the restriction portion and the fixing portion of the restriction member are disposed at the high end of the partition member and the conducting portion of the filter bottle cap respectively.

45. The bottle filtration assembly of claim 44, wherein, The fixing portion of the restriction member is connected to the conducting portion, the restriction portion extends from the fixing portion to the high end of the partition member, and the center sealing member is restricted between the high end of the partition member and the conducting portion of the filter bottle cap.

46. The bottle filtration assembly of claim 44, wherein, The restriction member is provided with a communication channel, wherein the communication channel is formed in the fixing portion, and the communication channel is in communication with the first channel.

47. The bottle filtration assembly of claim 45, wherein, The restriction member is provided with a communication channel, wherein the communication channel is formed in the fixing portion, and the first channel, the second channel, and the third channel all pass through the communication channel.

48. The bottle filtration assembly of claim 42, wherein, The inner side of the opening portion of the filter bottle cap is at least partially in physical contact with the upper side of the high end of the partition member.

49. The bottle filtration assembly of claim 42, wherein, The filter bottle cap further forms a contact portion, wherein the contact portion extends between the mounting portion and the conducting portion, and the contact portion is disposed to at least partially contact the upper side of the high end of the partition member.

50. The bottle filtration assembly of claim 49, wherein, The contact portion extends upwardly and inwardly from the mounting portion to the conducting portion.

51. The bottle filtration assembly of claim 42, wherein, The ratio of the inner diameter of the low end to the inner diameter of the through opening of the high end is not less than 5 / 4.

52. The bottle filtration assembly of claim 42, wherein, The ratio of the inner diameter of the low end to the inner diameter of the through opening of the high end is not greater than 6 / 1.

53. The bottle filtration assembly of claim 42, wherein, The angle formed by the low end and the high end is greater than 90 degrees and less than 135 degrees.

54. The bottle filtration assembly of claim 42, wherein, Further comprising a restriction member, wherein the restriction member is fixedly connected to the conducting portion, and the high end of the partition member is partially disposed between the top of the filter bottle cap and the restriction member.

55. The filter bottle assembly of any one of claims 1-15, wherein, Further comprising a limiting member, the filter bottle cap comprises an opening portion and a mounting portion extending from the opening portion, the partition further comprises a positioning portion and a limiting portion, wherein the low end and the positioning portion are integrally extended from two opposite sides of the high end respectively, the limiting portion extends outward from the positioning portion, wherein the opening portion forms a through opening, and the positioning portion penetrates out of the through opening of the opening portion, wherein the limiting member is adapted to be arranged between the limiting portion and the opening portion of the filter bottle cap, and the positioning portion forms a pivot.

56. The bottle filtration assembly of claim 55, wherein, The water inlet and outlet of the filter bottle assembly are arranged at an end of the filter bottle assembly away from the filter bottle cap, and the filter bottle cap does not have a water passage opening.

57. The bottle filtration assembly of claim 55, wherein, The inner side of the opening portion of the filter bottle cap is at least partially in physical contact with the upper side of the high end of the partition.

58. The filter bottle assembly of any one of claims 1-15, wherein, Further comprising a limiting member, the filter bottle cap comprises an opening portion and a mounting portion extending from the opening portion, the partition further comprises a positioning portion and a limiting portion, wherein the low end and the positioning portion are integrally extended from two opposite sides of the high end respectively, the limiting portion extends outward from the positioning portion, wherein the opening portion forms a through opening, and the positioning portion penetrates out of the through opening of the opening portion, wherein the limiting member is adapted to be arranged between the limiting portion and the opening portion of the filter bottle cap, and the positioning portion forms a pivot.

59. The bottle filtration assembly of claim 58, wherein, The limiting member is a positioning screw, which forms a positioning column matched with the positioning opening, a threaded portion fixed in the limiting chamber, and a central sealing member between the positioning opening and the positioning column, wherein the positioning column forms a pivot.

60. The bottle filtration assembly of claim 59, wherein, The water inlet and outlet of the filter bottle assembly are arranged at an end of the filter bottle assembly away from the filter bottle cap, and the filter bottle cap does not have a water passage opening.

61. The bottle filtration assembly of claim 58, wherein, The inner side of the opening portion of the filter bottle cap is at least partially in physical contact with the upper side of the high end of the partition.

62. A filter bottle apparatus, comprising: Comprise: a filter core; and The filter bottle assembly of any one of claims 1-61, wherein the filter core is arranged in the containing cavity, and the high end of the partition is arranged between the filter bottle cap and the filter core.

63. A filter bottle apparatus, comprising: Comprise: a filter core; and The filter bottle assembly of any one of claims 31-41, wherein the filter core is arranged in the containing cavity, and the filter core and the shell form a water cavity therebetween, and the high end of the partition is arranged between the filter bottle cap and the filter core, wherein the partition and the filter core form a communication flow channel therebetween, and the communication flow channel is in communication with the first through channel and the water cavity respectively, and the second through channel is in communication with the inner side flow channel of the filter core.

64. The bottle filtration device of claim 63, wherein, The through portion further forms a first channel forming portion and a second channel forming portion, wherein the first through channel is formed between the first channel forming portion and the second channel forming portion, the second through channel is formed in the inner side of the second channel forming portion, and the second channel forming portion is arranged in the filter core in a watertight manner.

65. The bottle filtration device of claim 63, wherein, The constraint and the filter cartridge form a first communication passage between them, wherein the first communication passage is in communication with the first conducting passage.

66. A filter bottle apparatus, comprising: Comprise: a filter bottle forming a receiving cavity; a filter cartridge disposed in the receiving cavity of the filter bottle, wherein the filter cartridge and the filter bottle form an outer flow passage between them, the filter cartridge has an inner flow passage; a filter bottle cap forming a connecting portion and an extension wall, wherein the connecting portion is adapted to be detachably connected to the outer wall of the filter bottle; and a partitioning member, wherein the partitioning member forms a first sealing portion and a second sealing portion extending from the first sealing portion, wherein the second sealing portion of the partitioning member forms a through hole, wherein the first sealing portion is at least partially disposed in the receiving cavity of the filter bottle, the filter cartridge is between the partitioning member and the filter bottle, wherein the extension wall is inserted into the through hole of the second sealing portion, and the outer diameter of the first sealing portion is greater than the inner diameter of the through hole of the second sealing portion, so that the partitioning member can be driven to rotate relative to the filter bottle cap with the extension wall as the pivot.

67. The bottle filtration device of claim 66, wherein, Further comprising a constraint member fixedly connected to the extension wall of the filter bottle cap, wherein the second sealing portion of the partitioning member is partially sandwiched between the top of the filter bottle cap and the constraint member.

68. The bottle filtration device of claim 67, wherein, The constraint member is at least partially disposed below the second sealing portion, and the second sealing portion is at least partially disposed below the top of the filter bottle cap, so that the second sealing portion of the partitioning member is partially sandwiched between the constraint member and the top of the filter bottle cap.

69. The bottle filtration device of claim 68, wherein, The constraint member comprises a fixed portion and a constraint portion extending from the fixed portion, wherein the fixed portion of the constraint member is fixedly connected to the extension wall, and the constraint portion is disposed below the second sealing portion of the partitioning member.

70. The bottle filtration device of claim 67, wherein, The filter bottle cap further forms a flow passage portion, wherein the flow passage portion forms a first fluid passage and a second fluid passage, the partitioning member and the filter cartridge form a conducting passage between them, wherein the conducting passage is in communication with the first fluid passage and the outer flow passage respectively, and the second fluid passage is in communication with the inner flow passage.

71. The bottle filtration device of claim 70, wherein, The first fluid passage is formed between the outer peripheral wall of the flow passage portion and the inner peripheral wall of the flow passage portion, and the second fluid passage is formed inside the inner peripheral wall.

72. The bottle filtration device of claim 71, wherein, The inner peripheral wall of the flow passage portion is water-tightly disposed in the filter cartridge, so that the inner peripheral wall can water-tightly separate the first fluid passage and the second fluid passage.

73. The bottle filtration device of claim 71, wherein, The filter cartridge further comprises a filter cartridge adapter, and the water outlet of the filter cartridge adapter is sealingly connected to the inner peripheral wall of the flow passage portion.

74. The bottle filtration device of claim 71, wherein, The extension wall of the filter bottle cap is formed from the outer peripheral wall of the flow passage portion, and the outer peripheral wall of the flow passage portion is disposed around the inner peripheral wall of the flow passage portion.

75. The bottle filtration device of claim 70, wherein, The constraint member and the filter cartridge form a first communication passage between them, wherein the first communication passage is in communication with the first fluid passage and the conducting passage respectively.

76. The bottle filtration device of claim 70, wherein, The constraint part of the constraint member and the filter core form a first communication channel between them, and the fixed part of the constraint member and the inner circumferential wall of the flow-through part form a second communication channel between them, wherein the first communication channel is in communication with the second communication channel and the guide channel respectively, and the second communication channel is in communication with the first fluid channel and the first communication channel respectively.

77. The bottle filtering device according to any one of claims 66 to 76, wherein, The sealing member is rigid, and the first sealing part of the sealing member is at least partially pressed against the inner side wall of the filter bottle, so that the sealing member can radially support the inner side wall of the filter bottle from the inside of the filter bottle.

78. The bottle filtering device according to any one of claims 66 to 76, wherein, The second sealing part extends upward and inward from the first sealing part, so that the angle formed by the first sealing part and the second sealing part is obtuse.

79. The bottle filtering device according to any one of claims 66 to 76, wherein, The angle formed by the first sealing part and the second sealing part is greater than 90 degrees and less than 135 degrees.

80. The bottle filtering device according to any one of claims 66 to 76, wherein, The sealing member further comprises a set of reinforcing ribs, wherein the reinforcing ribs are arranged on the outer wall or the inner wall of the second sealing part of the sealing member along the extension direction of the second sealing part.

81. The bottle filtering device according to any one of claims 66 to 76, wherein, Further comprising at least one first sealing member and at least one second sealing member, wherein the at least one first sealing member is pressed between the filter bottle and the first sealing part of the sealing member, and the at least one second sealing member is pressed between the elongated wall of the filter bottle cap and the second sealing part of the sealing member.

82. The bottle filtering device according to any one of claims 66 to 76, wherein, The connecting part is arranged around the elongated wall.

83. The bottle filtering device according to any one of claims 66 to 76, wherein, The ratio of the outer diameter of the first sealing part to the inner diameter of the through hole of the second sealing part should be not less than 5 / 4.

84. The bottle filtering device according to any one of claims 66 to 76, wherein, The ratio of the outer diameter of the first sealing part to the inner diameter of the through hole of the second sealing part should be not greater than 6 / 1.

85. The bottle filtration device of claim 78, wherein, The first sealing part forms a cylindrical space.

86. The bottle filtration device of claim 79, wherein, The first sealing part forms a cylindrical space.

87. The bottle filtration device of claim 70, wherein, The first fluid channel and the second fluid channel of the filter bottle cap are at least partially located on a straight line.

88. The bottle filtration device of claim 70, wherein, The first fluid channel and the second fluid channel are at least partially arranged horizontally.

89. A filter bottle assembly, comprising: Comprising: a filter bottle forming an accommodation cavity; a filter bottle cap forming a connecting part and an elongated wall, wherein the connecting part is adapted to be detachably connected to the outer side wall of the filter bottle; and a sealing member, wherein the sealing member forms a first sealing part and a second sealing part extending from the first sealing part, wherein the second sealing part of the sealing member forms a through hole, wherein the first sealing part is at least partially arranged in the accommodation cavity of the filter bottle, wherein the elongated wall is inserted into the through hole of the second sealing part, and the outer diameter of the first sealing part is greater than the inner diameter of the through hole of the second sealing part, so that the sealing member can be driven to rotate relative to the filter bottle cap with the elongated wall as the pivot.

90. The bottle filtration assembly of claim 89, wherein, Further comprising a constraint member fixedly connected to the elongated wall of the filter bottle cap, wherein the second sealing part of the sealing member is partially sandwiched between the top of the filter bottle cap and the constraint member.

91. The bottle filtration assembly of claim 90, wherein, The constraint member is disposed at least partially below the second sealing portion of the partition member, and the second sealing portion of the partition member is disposed at least partially below the top portion of the filter bottle cap, so that the second sealing portion of the partition member is partially sandwiched between the constraint member and the top portion of the filter bottle cap.

92. The bottle filtration assembly of claim 91, wherein, The constraint member comprises a fixed portion and a constraint portion extending from the fixed portion, wherein the fixed portion of the constraint member is fixedly connected to the extension wall, and the constraint portion is disposed below the second sealing portion of the partition member.

93. The bottle filtration assembly of claim 89, wherein, The filter bottle cap further forms a flow passage portion, wherein the flow passage portion forms a first fluid passage and a second fluid passage, and the first fluid passage is formed between an outer peripheral wall of the flow passage portion and an inner peripheral wall of the flow passage portion, and the second fluid passage is formed inside the inner peripheral wall.

94. The bottle filtration assembly of claim 93, wherein, The extension wall of the filter bottle cap is formed from the outer peripheral wall of the flow passage portion, and the outer peripheral wall of the flow passage portion is disposed around the inner peripheral wall of the flow passage portion.

95. The filter bottle assembly of any one of claims 89 to 94, wherein, The partition member is rigid, and the first sealing portion of the partition member is at least partially pressed against the inner side wall of the filter bottle, so that the partition member can radially support the inner side wall of the filter bottle from the inside of the filter bottle.

96. The filter bottle assembly of any one of claims 89 to 94, wherein, The second sealing portion extends upwardly and inwardly from the first sealing portion, so that the angle formed by the first sealing portion and the second sealing portion is obtuse.

97. The filter bottle assembly of any one of claims 89 to 94, wherein, The angle formed by the first sealing portion and the second sealing portion is greater than 90 degrees and less than 135 degrees.

98. The filter bottle assembly of any one of claims 89 to 94, wherein, The partition member further comprises a set of reinforcing ribs, wherein the reinforcing ribs are disposed on the outer wall or the inner wall of the second sealing portion of the partition member in the extension direction of the second sealing portion.

99. The filter bottle assembly of any one of claims 89 to 94, wherein, Further comprising at least one first sealing member and at least one second sealing member, wherein the at least one first sealing member is pressed between the filter bottle and the first sealing portion of the partition member, and the at least one second sealing member is pressed between the extension wall of the filter bottle cap and the second sealing portion of the partition member.

100. The filter bottle assembly of any one of claims 89 to 94, wherein, The connection portion is disposed around the extension wall.

101. The filter bottle assembly of any one of claims 89 to 94, wherein, The ratio of the outer diameter of the first sealing portion to the inner diameter of the through hole of the second sealing portion should be not less than 5 / 4.

102. The filter bottle assembly of any one of claims 89 to 94, wherein, The ratio of the outer diameter of the first sealing portion to the inner diameter of the through hole of the second sealing portion should be not greater than 6 / 1.

103. The bottle filtration assembly of claim 96, wherein, The first sealing portion forms a cylindrical space.

104. The bottle filtration assembly of claim 97, wherein, The first sealing portion forms a cylindrical space.

105. The bottle filtration assembly of claim 93, wherein, The first fluid passage and the second fluid passage of the filter bottle cap are at least partially located on a straight line.

106. The bottle filtration assembly of claim 93, wherein, The first fluid passage and the second fluid passage are at least partially disposed horizontally.

107. A filter bottle closure assembly characterized by Comprise: a filter bottle cap forming a connection portion and an extension wall; and The spacer, wherein the spacer forms a first sealing portion and a second sealing portion extending from the first sealing portion, wherein the second sealing portion of the spacer forms a through hole, wherein the elongated wall is inserted into the through hole of the second sealing portion, and an outer diameter of the first sealing portion is larger than an inner diameter of the through hole of the second sealing portion, so that the spacer can be driven to rotate relative to the filter bottle cap with the elongated wall as a rotating shaft.

108. The filter bottle closure assembly of claim 107, wherein, Further comprising a constraint member fixedly connected to the elongated wall of the filter bottle cap, wherein the second sealing portion of the spacer is partially sandwiched between the top of the filter bottle cap and the constraint member.

109. The filter bottle closure assembly of claim 108, wherein, The constraint member is at least partially disposed below the second sealing portion, and the second sealing portion is at least partially disposed below the top of the filter bottle cap, so that the second sealing portion of the spacer is partially sandwiched between the constraint member and the top of the filter bottle cap.

110. The filter bottle closure assembly of claim 109, wherein, The constraint member comprises a fixed portion and a constraint portion extending from the fixed portion, wherein the fixed portion of the constraint member is fixedly connected to the elongated wall, and the constraint portion is disposed below the second sealing portion of the spacer.

111. The bottle filter cap assembly of claim 107, wherein, The filter bottle cap further forms a flow-through portion, wherein the flow-through portion forms a first fluid passage and a second fluid passage, wherein the first fluid passage is formed between an outer peripheral wall of the flow-through portion and an inner peripheral wall of the flow-through portion, and the second fluid passage is formed on an inner side of the inner peripheral wall.

112. The bottle filter cap assembly of claim 111, wherein, The elongated wall of the filter bottle cap is formed from the outer peripheral wall of the flow-through portion, and the outer peripheral wall of the flow-through portion is disposed around the inner peripheral wall of the flow-through portion.

113. The bottle closure assembly of any one of claims 107 to 112, wherein the closure is a screw closure. The spacer is a rigid member.

114. The bottle closure assembly of any one of claims 107 to 112, wherein the closure is a screw closure. The second sealing portion extends upwardly and inwardly from the first sealing portion, so that an angle formed by the first sealing portion and the second sealing portion is obtuse.

115. The bottle closure assembly of any one of claims 107 to 112, wherein the closure is a screw cap. The angle formed by the first sealing portion and the second sealing portion is greater than 90 degrees and less than 135 degrees.

116. The bottle closure assembly of any one of claims 107 to 112, wherein the closure is a screw closure. The spacer further comprises a set of reinforcing ribs, wherein the reinforcing ribs are disposed on an outer wall or an inner wall of the second sealing portion of the spacer along an extension direction of the second sealing portion.

117. The bottle closure assembly of any one of claims 107 to 112, wherein the closure is a screw closure. Further comprising at least one first sealing member and at least one second sealing member, wherein the at least one first sealing member is disposed on an outer wall of the first sealing portion of the spacer, and the at least one second sealing member is pressed between the elongated wall of the filter bottle cap and the second sealing portion of the spacer.

118. The bottle closure assembly of any one of claims 107 to 112, wherein the closure is a screw closure. The connecting portion is disposed around the elongated wall.

119. The bottle closure assembly of any one of claims 107 to 112, wherein, A ratio of an outer diameter of the first sealing portion to an inner diameter of the through hole of the second sealing portion should be not less than 5 / 4.

120. The bottle closure assembly of any one of claims 107 to 112, wherein, A ratio of an outer diameter of the first sealing portion to an inner diameter of the through hole of the second sealing portion should be not greater than 6 / 1.

121. The bottle closure assembly of claim 114, wherein The first sealing portion forms a cylindrical space.

122. The bottle closure assembly of claim 115, wherein The first sealing portion forms a cylindrical space.

123. The bottle closure assembly of claim 111 wherein, The first fluid passage and the second fluid passage of the filter bottle cap are at least partially located on a straight line.

124. The bottle closure assembly of claim 111, wherein, The first fluid passage and the second fluid passage are at least partially disposed horizontally.

125. A filter bottle apparatus, comprising: Comprising: A filter bottle comprising a housing; A filter core; A filter bottle cap; A filter bottle cap; A partition; And A first seal, wherein the housing comprises an open end and an extension extending from the open end, wherein the housing has a receiving cavity in which the filter cartridge is disposed, and the receiving cavity has a mounting opening formed at the open end of the housing, wherein the filter bottle cap is adapted to be detachably disposed on the outer sidewall of the open end of the housing, the partition is movably disposed on the inner sidewall of the open end of the housing, and the first seal is disposed between the inner sidewall of the open end of the housing and the partition, wherein when the filter bottle cap is disposed on the outer sidewall of the open end of the housing, the filter bottle cap can be pressed against the top end of the partition.

126. The bottle filtration device of claim 125, wherein, The filter bottle cap comprises an opening portion and a connecting portion extending from the opening portion, and the partition comprises a mounting end, a through portion and the top end, wherein the mounting end and the through portion integrally extend from two opposite sides of the top end respectively, wherein the opening portion forms a through opening, and the through portion forms a through channel, wherein the through channel is adapted to communicate with the filter cartridge, and the through portion penetrates out of the through opening of the opening portion.

127. The bottle filtration device of claim 125, wherein, The filter cartridge and the housing form a water cavity therebetween, the filter bottle cap comprises an opening portion and a connecting portion extending from the opening portion, and the partition comprises a mounting end, a through portion and the top end, wherein the mounting end and the through portion integrally extend from two opposite sides of the top end respectively, wherein the opening portion forms a through opening, and the through portion forms a through channel, wherein the through channel is adapted to communicate with the water cavity, and the through portion penetrates out of the through opening of the opening portion.

128. The bottle filtration device of claim 127, wherein, The top end and the mounting end surround a through cavity, wherein the through cavity is adapted to communicate with the through channel and the water cavity respectively.

129. The bottle filtration device of claim 128, wherein, When the filter bottle device has three openings, the housing further comprises a first fluid channel and a second fluid channel, the extension of the housing has a lower end portion, the first fluid channel and the second fluid channel are disposed at the lower end portion respectively, wherein the first fluid channel is formed in a central region of the lower end portion, and the second fluid channel is formed in an edge region extending outwardly from the central region of the lower end portion, the water cavity is divided into a first water cavity and a second water cavity by a sealing member of the filter cartridge, wherein the first water cavity communicates with the through cavity, the second water cavity communicates with the second fluid channel, a water inlet end of the filter cartridge communicates with the first water cavity, a sewage discharge end of the filter cartridge communicates with the second water cavity, and a purified water outlet of the filter cartridge is sealingly connected to the first fluid channel.

130. The bottle filtration device of claim 126 or 127, wherein, The mounting end of the partition comprises a main body portion and a sealing portion extending outwardly from the main body portion, and the first seal is disposed between the sealing portion and the inner sidewall of the open end of the housing.

131. The bottle filtration device of claim 130, wherein, The mounting end is in the shape of a bell mouth along the extension direction thereof.

132. The bottle filtration device of claim 126 or 127, wherein, Further comprising a limiting member, the filter bottle cap further comprises a limiting portion, wherein the limiting portion extends outwardly from the conducting portion, and the limiting member is adapted to be disposed between the limiting portion and the opening portion of the filter bottle cap.

133. The bottle filtration device of claim 125, wherein, Further comprising a limiting member, the filter bottle cap comprises an opening portion and a connecting portion extending from the opening portion, and the partitioning member comprises the top end, a mounting end, a positioning portion and a limiting portion, wherein the mounting end and the positioning portion integrally extend from two opposite sides of the top end respectively, and the limiting portion extends outwardly from the positioning portion, wherein the opening portion forms a through opening, and the positioning portion penetrates through the through opening of the opening portion, and the limiting member is adapted to be disposed between the limiting portion and the opening portion of the filter bottle cap.

134. The bottle filtration device of claim 133, wherein, The mounting end of the partitioning member comprises a main body portion and a sealing portion extending outwardly from the main body portion, and the first sealing member is disposed between the sealing portion and the inner side wall of the opening end of the shell.

135. The bottle filtration device of claim 134, wherein, The mounting end is trumpet-shaped along the extension direction thereof.

136. The bottle filtration device of claim 125, wherein, Further comprising a limiting member, the filter bottle cap comprises a limiting portion and a connecting portion extending from the limiting portion, and the partitioning member comprises the top end, a mounting end and a positioning opening, wherein the mounting end integrally extends from the top end, wherein the limiting portion forms a limiting chamber, and one end of the limiting member is adapted to be disposed at the top end of the partitioning member, and the other end of the limiting member penetrates through the positioning opening and is adapted to be fixedly disposed in the limiting chamber.

137. The bottle filtration device of claim 136, wherein, The limiting member is a positioning screw, which forms a positioning column matched with the positioning opening, a threaded portion fixed in the limiting chamber and a second sealing member between the positioning opening and the positioning column, and the second sealing member can ensure the sealing between the partitioning member and the positioning screw.

138. The bottle filtration device of claim 136, wherein, The mounting end of the partitioning member comprises a main body portion and a sealing portion extending outwardly from the main body portion, and the first sealing member is disposed between the sealing portion and the inner side wall of the opening end of the shell.

139. The bottle filtration device of claim 138, wherein, The mounting end is trumpet-shaped along the extension direction thereof.

140. The bottle filtration device of claim 125, wherein, Further comprising a limiting member, the filter bottle cap comprises a limiting portion and a connecting portion extending from the limiting portion, and the partitioning member comprises the top end, a mounting end and a positioning portion, wherein the mounting end and the positioning portion integrally extend from two opposite sides of the top end respectively, wherein the limiting portion forms a limiting chamber, and the positioning portion is adapted to be disposed in the limiting chamber, and the limiting member is disposed in the limiting chamber.

141. The bottle filtration device of claim 140, wherein, The mounting end of the partitioning member comprises a main body portion and a sealing portion extending outwardly from the main body portion, and the first sealing member is disposed between the sealing portion and the inner side wall of the opening end of the shell.

142. The bottle filtration device of claim 141, wherein, The mounting end is trumpet-shaped along the extension direction thereof.

143. The bottle filtration device of claim 141, wherein, The limiting member is a quick connector.

144. A filter bottle assembly, comprising: Comprise: a filter bottle comprising a shell; a filter bottle cap; a partitioning member; and a limiting member. A first seal, wherein the housing comprises an open end and an extension extending from the open end, wherein the housing has a receiving cavity having a mounting opening formed at the open end of the housing, wherein the filter bottle cap is adapted to be detachably arranged at an outer sidewall of the open end of the housing, the partition member is movably arranged at an inner sidewall of the open end of the housing, the first seal is arranged between the inner sidewall and the partition member, wherein the filter bottle cap is capable of abutting against a top end of the partition member when the filter bottle cap is arranged at the outer sidewall of the open end of the housing.

145. The bottle filtration assembly of claim 144, wherein, The filter bottle cap comprises an opening portion and a connecting portion extending from the opening portion, the partition member comprises a mounting end, a through portion and the top end, wherein the mounting end and the through portion integrally extend from two opposite sides of the top end respectively, wherein the opening portion forms a through opening, the through portion forms a through passage, and the through portion penetrates out of the through opening of the opening portion.

146. The bottle filtration assembly of claim 145, wherein, The top end and the mounting end surround a through cavity, wherein the through cavity is adapted to communicate with the through passage.

147. The bottle filtration assembly of claim 146, wherein, The housing further comprises a first fluid passage and a second fluid passage, the extension of the housing has a lower end portion, the first fluid passage and the second fluid passage are arranged at the lower end portion respectively, wherein the first fluid passage is formed at a central region of the lower end portion, the second fluid passage is formed at an edge region extending outwardly from the central region of the lower end portion.

148. The bottle filtration assembly of claim 145, wherein, The mounting end of the partition member comprises a main body portion and a sealing portion extending outwardly from the main body portion, wherein the first seal is arranged between the sealing portion and the inner sidewall of the open end of the housing.

149. The bottle filtration assembly of claim 148, wherein, The mounting end is in the shape of a bell mouth along the extending direction of the mounting end.

150. The bottle filtration assembly of claim 145, wherein, Further comprising a limiting member, the partition member further comprises a limiting portion, wherein the limiting portion extends outwardly from the through portion, the limiting member is adapted to be arranged between the limiting portion and the opening portion of the filter bottle cap.

151. The bottle filtration assembly of claim 144, wherein, Further comprising a limiting member, the filter bottle cap comprises an opening portion and a connecting portion extending from the opening portion, the partition member comprises the top end, a mounting end, a positioning portion and a limiting portion, wherein the mounting end and the positioning portion integrally extend from two opposite sides of the top end respectively, the limiting portion extends outwardly from the positioning portion, wherein the opening portion forms a through opening, and the positioning portion penetrates out of the through opening of the opening portion, the limiting member is adapted to be arranged between the limiting portion and the opening portion of the filter bottle cap.

152. The bottle filtration assembly of claim 151, wherein, The mounting end of the partition member comprises a main body portion and a sealing portion extending outwardly from the main body portion, wherein the first seal is arranged between the sealing portion and the inner sidewall of the open end of the housing.

153. The bottle filtration assembly of claim 152, wherein, The mounting end is in the shape of a bell mouth along the extending direction of the mounting end.

154. The bottle filtration assembly of claim 144, wherein, Further comprising a limiting member, the filter bottle cap comprises a limiting portion and a connecting portion extending from the limiting portion, the partitioning member comprises the top end, a mounting end and a positioning opening, wherein the mounting end integrally extends from the top end, wherein the limiting portion forms a limiting chamber, and one end of the limiting member is adapted to be arranged at the top end of the partitioning member, the other end of the limiting member penetrates out of the positioning opening and is adapted to be fixedly arranged in the limiting chamber.

155. The bottle filtration assembly of claim 154, wherein, The limiting member is a positioning screw, the positioning screw forms a positioning column matched with the positioning opening, a threaded portion fixed in the limiting chamber and a second sealing member between the positioning opening and the positioning column, the second sealing member can ensure the sealing between the partitioning member and the positioning screw.

156. The bottle filtration assembly of claim 154, wherein, The mounting end of the partitioning member comprises a main body portion and a sealing portion extending outwardly from the main body portion, wherein the first sealing member is arranged between the sealing portion and the inner side wall of the opening end of the shell.

157. The bottle filtration assembly of claim 156, wherein, The mounting end is in the shape of a flared mouth along the extending direction thereof.

158. The bottle filtration assembly of claim 144, wherein, Further comprising a limiting member, the filter bottle cap comprises a limiting portion and a connecting portion extending from the limiting portion, the partitioning member comprises the top end, a mounting end and a positioning portion, wherein the mounting end and the positioning portion integrally extend from two opposite sides of the top end respectively, wherein the limiting portion forms a limiting chamber, and the positioning portion is adapted to be arranged in the limiting chamber, the limiting member is arranged in the limiting chamber.

159. The bottle filtration assembly of claim 158, wherein, The mounting end of the partitioning member comprises a main body portion and a sealing portion extending outwardly from the main body portion, wherein the first sealing member is arranged between the sealing portion and the inner side wall of the opening end of the shell.

160. The bottle filtration assembly of claim 159, wherein, The mounting end is in the shape of a flared mouth along the extending direction thereof.

161. The bottle filtration assembly of claim 159, wherein, The limiting member is a quick interface.

162. A filter bottle assembly, comprising: Comprise: a filter bottle comprising a shell; a filter bottle cap; a partitioning member comprising a high end and a low end extending outwardly and downwardly from the high end; and The first seal is disposed between the outer wall of the open end of the housing and the inner circumferential wall of the lower end of the partition piece.

163. The bottle filtration assembly of claim 162, wherein, The filter bottle cap and the connecting portion of the housing are detachably connected by a threaded connection or a rotating snap connection.

164. The bottle filtration assembly of claim 162, wherein, Further comprising a metal ring, wherein the metal ring is disposed on the outer circumferential wall of the lower end of the partition piece.

165. The bottle filtration assembly of claim 162, wherein, The open end of the housing comprises a main body portion and a sealing portion extending outwardly from the main body portion, wherein the first seal is disposed between the sealing portion of the open end and the inner circumferential wall of the lower end of the partition piece.

166. The bottle filtration assembly of claim 165, wherein, The lower end is trumpet-shaped along its extending direction.

167. The bottle filtration assembly of claim 162, wherein, The upper end of the partition piece forms a guide groove, wherein the guide groove is disposed adjacent to the lower end of the partition piece and opposite to the open end of the housing, and wherein the top end of the open end of the housing is disposed to be placed in the guide groove.

168. The bottle filtration assembly of claim 167, wherein, Further comprising a second seal, wherein the second seal is disposed between the inner wall of the open end of the housing and the groove wall of the guide groove.

169. The bottle filtration assembly of claim 168, wherein, Further comprising a retaining bracket, wherein the retaining bracket is at least partially disposed opposite to the guide groove to retain the second seal at least partially in the guide groove.

170. The bottle filtration assembly of claim 169, wherein, The retaining bracket is disposed below the upper end of the partition piece, and the retaining bracket is surrounded by the inner wall of the open end of the housing.

171. The bottle filtration assembly of claim 170, wherein, The retaining bracket is fixed to the partition piece.

172. The bottle filtration assembly of claim 171, wherein, The retaining bracket further has a notch.

173. The filter bottle assembly of any of claims 162-172, wherein, The filter bottle cap comprises an open portion and a mounting portion extending from the open portion, and the partition piece further comprises a through portion, wherein the lower end and the through portion are integrally extended from two opposite sides of the upper end, respectively, wherein the open portion forms a through opening, and the through portion forms a through passage, and wherein the through portion penetrates out of the through opening of the open portion.

174. The bottle filtration assembly of claim 173, wherein, The high end and the inner wall of the open end of the shell surround a through cavity; the filter bottle further comprises a first fluid passage and a second fluid passage, the extension of the shell has a lower end, the first fluid passage and the second fluid passage of the filter bottle are respectively arranged at the lower end of the filter bottle, wherein the first fluid passage is formed in the central region of the lower end, and the second fluid passage is formed in the edge region extending outward from the central region of the lower end.

175. The bottle filtration assembly of claim 173, wherein, Further comprising a limiting member, the partition further comprises a limiting portion, wherein the limiting portion extends outward from the through portion, and the limiting member is adapted to be arranged between the limiting portion and the open portion of the filter bottle cap.

176. The filter bottle assembly of any of claims 162-172, wherein The filter bottle cap comprises an open portion, a mounting portion extending from the open portion, and a through portion extending from the open portion, the high end of the partition forms a through opening, wherein the through portion and the open portion form a through channel extending from the open portion to the through portion, and the through portion penetrates out of the through opening of the high end.

177. The bottle filtration assembly of claim 176, wherein, Further comprising a central sealing member, wherein the central sealing member is arranged between the through portion of the filter bottle cap and the through opening of the high end of the partition.

178. The bottle filtration assembly of claim 177, wherein, Further comprising a constraint member, wherein the constraint member comprises a fixing portion and a constraint portion, and the constraint portion and the fixing portion of the constraint member are respectively arranged at the high end of the partition and the through portion of the filter bottle cap.

179. The bottle filtration assembly of claim 178, wherein, The fixing portion of the constraint member is connected to the through portion, and the constraint portion extends from the fixing portion to the high end of the partition.

180. The bottle filtration assembly of claim 179, wherein, The central sealing member is constrained between the high end of the partition and the through portion of the filter bottle cap; the filter bottle further comprises a first fluid passage and a second fluid passage, the extension of the shell has a lower end, the first fluid passage and the second fluid passage of the filter bottle are respectively arranged at the lower end of the filter bottle, wherein the first fluid passage is formed in the central region of the lower end, and the second fluid passage is formed in the edge region extending outward from the central region of the lower end.

181. The filter bottle assembly of any one of claims 162-172, wherein, The filter bottle cap comprises an open portion, a mounting portion extending from the open portion, and a through portion extending from the open portion, the high end of the partition forms a through opening, wherein the through portion and the open portion form a first through channel extending from the open portion to the through portion and a second through channel extending from the open portion to the through portion, and the through portion penetrates out of the through opening of the high end of the partition.

182. The bottle filtration assembly of claim 181, wherein, Further comprising a central sealing member, wherein the central sealing member is arranged between the through portion of the filter bottle cap and the through opening of the high end of the partition.

183. The bottle filtration assembly of claim 182, wherein, Further comprising a restriction member, wherein the restriction member comprises a fixed portion and a restriction portion, and the restriction portion and the fixed portion of the restriction member are arranged at the high end of the partition member and the lead-through portion of the filter cap, respectively.

184. The bottle filtration assembly of claim 183, wherein, The fixed portion of the restriction member is connected to the lead-through portion, and the restriction portion extends from the fixed portion to the high end of the partition member, and the center seal is restricted between the high end of the partition member and the lead-through portion of the filter cap.

185. The bottle filtration assembly of claim 183, wherein, The restriction member is provided with a communication passage, wherein the communication passage is formed in the fixed portion, and the communication passage is in communication with the first lead-through passage.

186. The bottle filtration assembly of claim 184, wherein, The restriction member is provided with a communication passage, wherein the communication passage is formed in the fixed portion, and the first lead-through passage and the second lead-through passage both pass through the communication passage.

187. The filter bottle assembly of any one of claims 162-172, wherein, The filter cap comprises an opening portion, a mounting portion extending from the opening portion, a lead-through portion extending from the opening portion, a first passage forming portion, and a second passage forming portion, and the high end of the partition member forms a through opening, wherein the lead-through portion passes out of the through opening of the high end, the first passage forming portion is surrounded by the opening portion, the second passage forming portion is surrounded by the first passage forming portion, the first passage forming portion and the opening portion form a first passage therebetween, the first passage forming portion and the second passage forming portion form a second passage therebetween, and the second passage forming portion forms a third passage, wherein the first passage, the second passage, and the third passage are separated from each other by the first passage forming portion and the second passage forming portion.

188. The bottle filtration assembly of claim 187, wherein, Further comprising a center seal, wherein the center seal is arranged between the lead-through portion of the filter cap and the through opening of the high end of the partition member.

189. The bottle filtration assembly of claim 188, wherein, Further comprising a restriction member, wherein the restriction member comprises a fixed portion and a restriction portion, and the restriction portion and the fixed portion of the restriction member are arranged at the high end of the partition member and the lead-through portion of the filter cap, respectively.

190. The bottle filtration assembly of claim 189, wherein, The fixed portion of the restriction member is connected to the lead-through portion, and the restriction portion extends from the fixed portion to the high end of the partition member, and the center seal is restricted between the high end of the partition member and the lead-through portion of the filter cap.

191. The bottle filtration assembly of claim 189, wherein, The restriction member is provided with a communication passage, wherein the communication passage is formed in the fixed portion, and the communication passage is in communication with the first passage.

192. The bottle filtration assembly of claim 190, wherein, The restriction member is provided with a communication passage, wherein the communication passage is formed in the fixed portion, and the first passage, the second passage, and the third passage all pass through the communication passage.

193. The filter bottle assembly of any one of claims 162-172, wherein, Further comprising a limiting member, the filter bottle cap comprises an opening portion and a mounting portion extending from the opening portion, the partition further comprises a positioning portion and a limiting portion, wherein the low end and the positioning portion are integrally extended from two opposite sides of the high end respectively, the limiting portion extends outward from the positioning portion, wherein the opening portion forms a through opening, and the positioning portion penetrates through the through opening of the opening portion, wherein the limiting member is adapted to be arranged between the limiting portion and the opening portion of the filter bottle cap.

194. The bottle filtration assembly of claim 193, wherein, The water inlet and outlet of the filter bottle assembly are arranged at the end of the filter bottle assembly away from the filter bottle cap, and the filter bottle cap does not have a water passage opening.

195. The filter bottle assembly of any one of claims 162-172, wherein, Further comprising a limiting member, the filter bottle cap comprises a limiting portion and a mounting portion extending from the limiting portion, the partition further has a positioning opening, wherein the low end is integrally extended from the high end, wherein the limiting portion forms a limiting chamber, and one end of the limiting member is adapted to be arranged at the high end of the partition, and the other end of the limiting member penetrates through the positioning opening and is adapted to be fixedly arranged in the limiting chamber.

196. The bottle filtration assembly of claim 195, wherein, The limiting member is a positioning screw, which forms a positioning column matched with the positioning opening, a threaded portion fixed in the limiting chamber, and a central sealing member between the positioning opening and the positioning column.

197. The bottle filtration assembly of claim 196, wherein, The water inlet and outlet of the filter bottle assembly are arranged at the end of the filter bottle assembly away from the filter bottle cap, and the filter bottle cap does not have a water passage opening.

198. A filter bottle apparatus, characterized by, Comprise: a filter core; and the filter bottle assembly of claims 162-197, wherein the filter core is arranged in the accommodating cavity, and the high end of the partition is arranged between the filter bottle cap and the filter core.

199. A filter bottle apparatus, characterized by, Comprise: a filter bottle; a filter bottle cap, which is detachably connected to the filter bottle; a partition, which is arranged to be rotatable relative to the filter bottle cap; a first sealing member, which is arranged between the filter bottle and a first sealing portion of the partition; and a second sealing member, which is arranged between the filter bottle cap and a second sealing portion of the partition, wherein the size of the first sealing member is greater than that of the second sealing member.

200. The bottle filtration device of claim 199, wherein, Further comprising a constraint member, which is connected to the filter bottle cap and is used to constrain the partition to prevent the partition from being separated from the filter bottle cap.

201. The bottle filtration device of claim 200, wherein, The filter bottle cap comprises an extension wall, the partition is provided with a through hole formed in the second sealing portion, and the constraint member comprises a fixing portion and a constraint portion extending from the fixing portion, wherein the extension wall is inserted into the through hole of the partition, the second sealing member is arranged between the second sealing portion and the extension wall, the fixing portion is connected to the extension wall, and the constraint portion is used to constrain the partition, wherein the extension wall serves as a rotation axis of relative rotation between the filter bottle cap and the partition.

202. The bottle filtration device of claim 201, wherein, The filter bottle cap further comprises a flow-through portion having a fluid passage.

203. The bottle filtration device of claim 202, wherein, The second sealing portion of the partition is constrained between the filter bottle cap and the constraint portion of the constraint member.

204. The bottle filtration device of claim 203, wherein, The fixing portion of the constraint member is fixedly arranged on the extension wall by a screw.

205. The bottle filtration device of any one of claims 202-204, wherein, The fluid passage includes a first fluid passage and a second fluid passage, wherein the first fluid passage is formed between an outer circumferential wall of the flow passage and an inner circumferential wall of the flow passage, and the second fluid passage is formed inside the inner circumferential wall, and the restriction member is provided with a communication passage formed in the fixing portion, wherein the communication passage is in communication with the first fluid passage.

206. The bottle filtration device of claim 205, wherein, Further comprising a filter core adapter, a purified water outlet of the filter core adapter is sealingly connected to the inner circumferential wall of the flow passage.

207. The bottle filtration device of any one of claims 202-204, wherein, The fluid passage includes a first fluid passage, a second fluid passage and a third fluid passage, wherein the first fluid passage is formed between an outer circumferential wall of the flow passage and a first inner circumferential wall of the flow passage, the second fluid passage is formed between the first inner circumferential wall and a second inner circumferential wall of the flow passage, and the third fluid passage is formed inside the second inner circumferential wall, and the restriction member is provided with a communication passage formed in the fixing portion, wherein the communication passage is in communication with the first fluid passage.

208. The bottle filtration device of any one of claims 200-204, wherein, The sealing member is arranged to radially support the bottle wall of the filter bottle from the inside of the filter bottle.

209. The bottle filtration device of claim 199, wherein, The filter bottle cap further comprises a flow passage of a flow passage portion, the flow passage includes a first fluid passage and a second fluid passage, wherein the first fluid passage is formed between an outer circumferential wall of the flow passage and an inner circumferential wall of the flow passage, and the second fluid passage is formed inside the inner circumferential wall, and the sealing member is provided with a through hole formed in the second sealing portion, and the first fluid passage and the second fluid passage are both arranged inside the through hole of the sealing member.

210. The bottle filtration device of claim 199, wherein, The filter bottle cap further comprises a flow passage of a flow passage portion, the flow passage includes a first fluid passage, a second fluid passage and a third fluid passage, wherein the first fluid passage is formed between an outer circumferential wall of the flow passage and a first inner circumferential wall of the flow passage, the second fluid passage is formed between the first inner circumferential wall and a second inner circumferential wall of the flow passage, and the third fluid passage is formed inside the second inner circumferential wall, and the sealing member is provided with a through hole formed in the second sealing portion, and the first fluid passage, the second fluid passage and the third fluid passage are all arranged inside the through hole of the sealing member.

211. The bottle filtration device of claim 199, 200, or 206, wherein, Further comprising a first locking member, a second locking member and a locking plug, wherein the first locking member is arranged on the outer wall of the filter bottle, the second locking member is arranged on the outer wall of the filter bottle cap, and when the first locking member and the second locking member are aligned, a positioning slot is formed, and the locking plug is arranged to be inserted into the positioning slot.

212. The bottle filtration device of any one of claims 202-204, wherein, The fluid passage includes a first fluid passage, and the filter bottle includes a second fluid passage and a third fluid passage, wherein an outer circumferential wall of the flow passage forms the first fluid passage, the filter bottle has an upper end portion and a lower end portion extending downward from the upper end portion of the filter bottle, and the second fluid passage and the third fluid passage of the filter bottle are arranged at the lower end portion of the filter bottle, respectively.

213. The bottle filtration device of any one of claims 202-204, wherein, The fluid passage includes a first fluid passage and a second fluid passage, and the first fluid passage and the second fluid passage are both arranged inside the through hole of the partition.

214. The bottle filtration device of any one of claims 202-204, wherein, The fluid passage includes a first fluid passage, a second fluid passage and a third fluid passage, and the first fluid passage, the second fluid passage and the third fluid passage are all arranged inside the through hole of the partition.

215. The bottle filtration device of any one of claims 202-204, wherein, The fluid passage includes a first fluid passage, and the filter bottle includes a second fluid passage and a third fluid passage, the first fluid passage is arranged inside the through hole of the partition, the filter bottle has an upper end and a lower end extending downward from the upper end of the filter bottle, and the second fluid passage and the third fluid passage of the filter bottle are arranged at the lower end of the filter bottle respectively.

216. A filter bottle closure assembly characterized by Comprise: a filter bottle cap for detachably connecting to a filter bottle; a partition arranged to be rotatable relative to the filter bottle cap; and a restraint connected to the filter bottle cap for restraining the partition to prevent the partition from being separated from the filter bottle cap; wherein the partition comprises a first sealing portion and a second sealing portion, wherein a first sealing member is arranged in the first sealing portion, and a second sealing member is arranged between the second sealing portion and the filter bottle cap, and wherein the size of the first sealing member is greater than the size of the second sealing member.

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