Filter bottle device and filter bottle assembly

Abstract

Provided in the present invention are a filter bottle device and a filter bottle assembly thereof. The filter bottle assembly comprises a filter bottle, a filter bottle cap and a sealing spacer, wherein the filter bottle comprises a housing; the sealing spacer comprises a high end and a low end; the housing is provided with an open end and a connection portion extending from the open end, and the housing has an accommodating cavity; the accommodating cavity has a mounting opening that is formed at the open end of the housing; the filter bottle cap is adapted to be detachably connected to the outer side wall of the connection portion of the housing; the low end of the sealing spacer is arranged between the inner side wall of the filter bottle cap and the outer wall of the open end of the housing; the high end of the sealing spacer extends upwards and inwards from the low end to the inner side of the filter bottle cap; and the sealing spacer is configured to be rotatable relative to the filter bottle cap.

Description

Filter bottle device and filter bottle assembly TECHNICAL FIELD

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

[0002] In the existing filter bottle device, a sealing member is directly arranged between the filter bottle cap and the filter bottle. In order to ensure the effectiveness of the sealing, the filter bottle cap and the filter bottle need to be kept in a close connection state, which causes great difficulty in the connection and disconnection of the two, especially when the two are connected through a threaded structure, which needs to be tightly screwed, and a large force is needed to unscrew when disassembling.

[0003] The arrangement of the sealing member of the existing filter bottle device includes two types of compression sealing and side sealing, as shown in FIG. 1, in which the arrangement of the sealing member 31P is compression sealing, and the arrangement of the sealing member 32P is side sealing. It can be understood that if compression sealing is used, the filter bottle cap 2P and the filter bottle 1P need to be screwed as tightly as possible to flatten the sealing member 31P, so as to achieve reliable sealing, which inevitably causes difficulty in unscrewing the filter bottle cap 2P and the filter bottle 1P when disassembling. Moreover, since the circular ring formed by the sealing member 31P has a diameter not less than the inner diameter of the filter bottle 1P, that is, the sealing member 31P has a large size, when the filter bottle cap 2P and the filter bottle 1P rotate relative to each other, the friction caused by the sealing member 31P cannot be ignored, which will further hinder the screwing process and the unscrewing process of the filter bottle cap 2P and the filter bottle 1P. Correspondingly, if side sealing is used, although the screwing degree of the filter bottle cap 2P and the filter bottle 1P can be slightly reduced, the sealing member 32P also has a large size, which will also cause a large friction, thereby causing great hindrance to the screwing process and the unscrewing process of the filter bottle cap 2P and the filter bottle 1P.

[0004] In addition, since the filter bottle 1P and the filter bottle cap 2P are usually made of plastic material, and the filter bottle cap 2P is not a regular cylindrical shape, it cannot guarantee a high roundness, which forces the manufacturer of the filter bottle device to select a sealing member with a large compression amount when selecting the sealing member, so as to compensate for the problem of sealing difficulty caused by the deformation of the plastic part. However, when replacing the filter element of the filter bottle device, the sealing member also needs to be replaced, because the large compression amount makes the sealing member difficult to rebound, and if the sealing member is continued to be used, the effectiveness and reliability of the sealing cannot be guaranteed.

[0005] Moreover, during the screwing of the filter bottle cap 2P and the filter bottle 1P, they are relatively moved (for example, one clockwise and the other counterclockwise), and it is difficult for the sealing member 31P or the sealing member 32P to follow the rotation of the filter bottle cap 2P or the filter bottle 1P, so that the sealing member is easily in a twisted state after the filter bottle cap 2P and the filter bottle 1P are screwed, resulting in sealing failure and further water leakage. SUMMARY

[0006] 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.

[0007] Accordingly, according to an embodiment of the present application, a filter bottle assembly having at least one of the foregoing advantages includes:

[0008] a filter bottle including a housing;

[0009] a filter bottle cap; and

[0010] a partition member including a high end and a low end, wherein the housing forms an open end and a connecting portion 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 connected to the outer sidewall of the connecting portion of the housing, the low end of the partition member is arranged between the inner sidewall of the filter bottle cap and the outer wall of the open end of the housing, and the high end of the partition member extends upwardly and inwardly from the low end to the inner side of the filter bottle cap, and wherein the partition member is arranged to be rotatable relative to the filter bottle cap.

[0011] According to another aspect of the present application, the present application provides a filter bottle device, including:

[0012] a filter cartridge;

[0013] a filter bottle including a housing;

[0014] a filter bottle cap; and

[0015] A closure member comprising a high end and a low end, wherein the housing forms an open end and a connecting portion 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 removably connected to the outer sidewall of the connecting portion of the housing, the low end of the closure member is disposed between the inner sidewall of the filter bottle cap and the outer wall of the open end of the housing, the high end of the closure member extends upwardly and inwardly from the low end to the inner sidewall of the filter bottle cap, wherein the closure member is disposed to be rotatable relative to the filter bottle cap, wherein the filter cartridge is disposed within the receiving cavity, the high end of the closure member is disposed between the filter bottle cap and the filter cartridge.

[0016] The above and other advantages of the present application will become readily apparent by reference to the following description when considered in connection with the accompanying drawings.

[0017] The above and other advantages and features of the present application will become apparent from the following detailed description when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] FIG. 1 is a cross-sectional view of a conventional filter bottle device.

[0019] FIG. 2A is a perspective view of a filter bottle device according to a first embodiment of the present application.

[0020] FIG. 2B is a cross-sectional view of the filter bottle device according to the first embodiment of the present application.

[0021] FIG. 2C is a cross-sectional view of the filter bottle device according to the first embodiment of the present application, in which a through passage of the closure member is in communication with a water cavity between the filter cartridge and the housing.

[0022] FIG. 2D is a cross-sectional view of the filter bottle device according to the first embodiment of the present application, in which a through passage of the closure member is in communication with the filter cartridge (or an opening of the filter cartridge).

[0023] FIG. 3A is a perspective view of a closure member of the filter bottle device according to the first embodiment of the present application.

[0024] FIG. 3B is a cross-sectional view of the closure member of the filter bottle device according to the first embodiment of the present application.

[0025] FIG. 3C is another cross-sectional view of the closure member of the filter bottle device according to the first embodiment of the present application, in which a metal ring is disposed at an outer peripheral wall of the low end of the closure member.

[0026] FIG. 3D is a perspective view of the closure member, a retaining holder, and a second sealing member of the filter bottle device according to the first embodiment of the present application.

[0027] Figure 3E is a perspective view of a retaining tray of the filter bottle apparatus according to the first embodiment of the present application.

[0028] Figure 4A is a perspective view of an alternative embodiment of the filter bottle apparatus according to the first embodiment of the present application.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] Figure 6A is a perspective view of the filter bottle apparatus according to the second embodiment of the present application.

[0034] 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.

[0035] 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.

[0036] Figure 7B is a perspective view of the closure of the filter bottle apparatus according to the second embodiment of the present application.

[0037] Figure 7C is a cross-sectional view of the closure of the filter bottle apparatus according to the second embodiment of the present application.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Figure 8A is a perspective view of the filter bottle apparatus according to the third embodiment of the present application.

[0043] FIG. 8B is a cross-sectional view of the filter bottle apparatus according to the third embodiment of the present application.

[0044] FIG. 9A is a perspective view of the partition of the filter bottle apparatus according to the third embodiment of the present application.

[0045] FIG. 9B is a cross-sectional view of the partition of the filter bottle apparatus according to the third embodiment of the present application.

[0046] FIG. 9C is another cross-sectional view of the partition of the filter bottle apparatus according to the third embodiment of the present application, in which a metal ring is provided to the outer peripheral wall of the lower end of the partition.

[0047] FIG. 10A is a perspective view of the filter bottle apparatus according to the fourth embodiment of the present application.

[0048] FIG. 10B is a cross-sectional view of the filter bottle apparatus according to the fourth embodiment of the present application.

[0049] FIG. 11A is a perspective view of the partition of the filter bottle apparatus according to the fourth embodiment of the present application.

[0050] FIG. 11B is a cross-sectional view of the partition of the filter bottle apparatus according to the fourth embodiment of the present application.

[0051] FIG. 11C is another cross-sectional view of the partition of the filter bottle apparatus according to the fourth embodiment of the present application, in which a metal ring is provided to the outer peripheral wall of the lower end of the partition.

[0052] FIG. 12A is a perspective view of an alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0053] 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.

[0054] FIG. 13A is a perspective view of the partition of the alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0055] FIG. 13B is a cross-sectional view of the partition of the alternative embodiment of the filter bottle apparatus according to the fourth embodiment of the present application.

[0056] FIG. 13C is another cross-sectional view of the partition 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 to the outer peripheral wall of the lower end of the partition. DETAILED DESCRIPTION

[0057] The following description is provided to enable any person skilled in the art to practice the present application. Various modifications to these examples can be made by a person skilled in the art without departing from the scope of the present application. Therefore, the present application should not be limited by the examples described herein.

[0058] It should be understood by those of ordinary skill in the art that the term "one" should be understood as "at least one" or "one or more" unless specifically noted herein, i.e., in one embodiment, the number of one element can be one, while in another embodiment, the number of the element can be more than one.

[0059] It should be understood by those of ordinary skill in the art that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like refer to the orientation or position shown in the drawings, merely for convenience in describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation or position. Therefore, the above terms should not be interpreted as limiting the present application.

[0060] 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.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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 is connected with the filter element 12z (or the opening of the filter element 12z), 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 arrangement of the partition 3z of the filter bottle device of the present application makes it unnecessary to arrange a water sealing mechanism 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.

[0075] 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 down) 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 between the first sealing member 51z and the sealing portion 1114z of the opening end 111z of the shell 11z of the filter bottle 1z, 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 by a snap spring, but can also be a nut or other limiting member, for example, a nut can be fixed to the limiting portion 34z of the partition 3z.

[0076] 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.

[0077] 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 circumferential 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 circumferential 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. Therefore, 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.

[0078] 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.

[0079] As shown in FIGS. 4A-5C of the accompanying 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 water 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] 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, buckle connection, interference fit, etc., and even an additional connecting member can be used to connect the two.

[0087] 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.

[0088] 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.

[0089] 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 as well, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3zA always presses against the first sealing piece 51z and deforms inward synchronously with the open end 111z of the shell 11z.

[0090] 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 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.

[0091] 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.

[0092] 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 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 3zA, so that both the first seal 51z and the second seal 52z are convenient to install and replace.

[0093] 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.

[0094] 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.

[0095] As shown in FIGS. 6A to 7G of the drawings, 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 shell 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 shell 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 shell 11z of the filter bottle 1z and achieve 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 as the inner circumferential wall 321z of the lower end 32z of the partition 3zB moves to the open end 111z of the shell 11z of the filter bottle 1z. Preferably, the thickness of the open end 111z of the shell 11z is less than the thickness of the connecting portion 113z of the shell 11z. More preferably, the total thickness of the open end 111z of the shell 11z and the lower end 32z of the partition 3zB is substantially the same as the thickness of the connecting portion 113z of the shell 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 regarded 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 shell 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 shell 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 shell 11z and the inner circumferential wall 321z of the lower end 32z of the partition 3zB and to ensure that appropriate friction force can be generated between the outer wall 1111z of the open end 111z of the shell 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.

[0096] 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 predetermined position to ensure that the inner circumferential wall 321z of the low end 32z of the partition piece 3zB 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 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.

[0097] 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.

[0098] 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).

[0099] 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 231zB and a second passage forming portion 232zB, wherein the first conducting passage 2301zB is formed between the first passage forming portion 231zB and the second passage forming portion 232zB, and the second conducting passage 2302zB is formed inside the second passage forming portion 232zB. Preferably, the second passage forming portion 232zB is water-tightly arranged in the filter 12z, so as to enable the second passage forming portion 232zB to water-tightly separate the first conducting passage 2301zB (and the communicating flow passage 3011z) from the second conducting passage 2302zB.

[0100] 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 as to enable the contact portion 27z and the high end 31z of the partition 3zB to form a larger physical contact area.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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 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.

[0105] 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.

[0106] As shown in FIGS. 6A-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 disposed 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 element 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 considered as a part of or formed from the through portion 23zB, and the first communication channel 401z can be considered 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 disposed 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 detached from the filter bottle cap 2zB.

[0107] As shown in FIGS. 6A-7G 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 respectively disposed at the high end 31z of the partition 3zB and the through portion 23zB of the filter bottle cap 2zB, for restraining the partition 3zB and preventing the partition 3zB from being detached from the filter bottle cap 2zB.

[0108] As shown in FIGS. 6A-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, for restraining 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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 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 3zB to deform inwardly as well, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3zB always presses against the first sealing piece 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0113] As shown in FIGS. 6A-7G, 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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 extending 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 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 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.

[0120] 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.

[0121] As shown in FIGS. 8A-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 cartridge 12z in a water-tight manner, such that the first channel forming portion 25zE can water-tightly separate the first channel 2101zE from the second channel 2102zE, and the second channel forming portion 26zE can water-tightly separate the second channel 2102zE from the third channel 2103zE. 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.

[0122] 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.

[0123] 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 part 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 part 23zE as the rotation axis.

[0124] As shown in FIGS. 8A to 9C of the accompanying drawings, preferably, the partition 3zE and the filter element 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 passage 2101zE and the water cavity 120z, respectively.

[0125] As shown in FIGS. 8A to 9C of the accompanying drawings, preferably, the filter bottle cap 2zE 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 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.

[0126] As shown in FIGS. 8A to 9C of the accompanying drawings, preferably, the lead-through portion 23zE of the filter bottle cap 2zE and the high end 31z of the partition 3zE of the present filter bottle device are sealed. The present filter bottle device further comprises a center seal 54z, wherein the center seal 54z is arranged between the lead-through portion 23zE of the filter bottle cap 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 cap 2zE and the high end 31z of the partition 3zE. It is worth noting that, since the center seal 54z is arranged between the lead-through portion 23zE of the filter bottle cap 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 center seal 54z is smaller 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 3zE to rotate relative to the filter bottle 1z. It is known to those skilled in the art that the second seal 52z can be arranged in substantially the same manner as the at least one first seal 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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 passage 401z therebetween, wherein the first communication passage 401z is in communication with the first passage 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 passage 401z can be considered as a part of the first passage 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.

[0132] 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 passage 40z, wherein the communication passage 40z is formed in the fixed portion 41z, and the communication passage 40z is in communication with the first passage 2101zE, preferably, the first passage 2101zE, the second passage 2102zE and the third passage 2103zE all pass through the communication passage 40z.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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 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 3zE to deform inwardly as well, so that the inner circumferential wall 321z of the low end 32z of the partition 3zE always presses against the first seal 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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 of the filter bottle device of the present application 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] As shown in FIGS. 10A to 11C of the 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 bound to 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.

[0149] As shown in FIGS. 10A to 11C 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 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.

[0150] 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 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 (for example, by 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 seal 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 inward, 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 inward, so that the inner circumferential wall 321z of the low end 32z of the partition piece 3zC always presses the first sealing piece 51z and deforms inward synchronously with the open end 111z of the shell 11z.

[0151] 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 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.

[0152] 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 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 through 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 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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 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 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 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 3zD and the filter bottle 1z less obstructed, which is beneficial to further reduce 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] 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.

[0164] 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 sealing member 51z and deforms inwardly synchronously with the open end 111z of the shell 11z.

[0165] As shown in FIGS. 12A-13C of the drawings, preferably, the filter bottle device of the present application further comprises at least one second sealing member 52z, wherein the second sealing member 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 sealing member 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 sealing member 52z is basically the same as that of the at least one first sealing member 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.

[0166] 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 tab 53z is fixed to the partition 3zD by welding. The retaining tab 53z can also be fixed to the partition 3zD by other means, such as screwing. More preferably, the retaining tab 53z is integrally formed with the partition 3zD. Preferably, the retaining tab 53z further has a notch 531z through which a user can use a screwdriver or similar 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 easy to install and replace.

[0167] As shown in Figures 2A to 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 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, 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 able to drive the partition 3z to move relative to the open end 111z of the housing 11z of the filter bottle 1z.

[0168] Unless specifically indicated otherwise, the term "sealed" as used in the present specification means watertight.

[0169] It is to be noted that the first, second and / or third are used herein only for naming and distinguishing different components (or elements) of the present application and to create a distinction between different components, elements and structures of the present application, and do not have a meaning of order or number.

[0170] It should be understood by those of ordinary skill in the art that the above description and the embodiments shown in the drawings are only for illustratively explaining the present application, but not limiting the present application. All equivalent implementations, modifications and improvements within the spirit of the present application should be included in the protection scope of the present application.

Claims

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 forms an open end and a connecting portion extending from the open end, wherein the bottle body has a receiving cavity with 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. The filter bottle assembly of claim 1, wherein 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. 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 the deformation or expansion of the low end of the partition when the low end is pressed. The filter bottle assembly of claim 2, 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. The filter bottle assembly of claim 4, wherein The low end forms a receiving space along a direction of extension thereof. The filter bottle assembly of claim 1, 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. The filter bottle assembly of claim 6, 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. The filter bottle assembly of claim 7, 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. The filter bottle assembly of claim 8, 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. The filter bottle assembly of claim 9, wherein The retaining holder is fixed to the partition. The filter bottle assembly of claim 10, wherein The retaining holder further has a notch. The filter bottle assembly of claim 1, wherein A thickness of the open end of the bottle body is less than a thickness of the connecting portion of the bottle body. The filter bottle assembly of claim 12, 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. The filter bottle assembly of claim 1, 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. 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. The filter bottle assembly according to 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 is extended out of the through opening of the opening portion, and the through portion forms a pivot. The filter bottle assembly of claim 16, wherein The shell further has an extension portion extending from the connecting portion, wherein the high end and the inner wall of the opening end of the shell enclose 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 extension portion respectively, wherein the first fluid channel is formed in the central region of the lower end portion, and the second fluid channel is formed in the edge region extending outward from the central region of the lower end portion. 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. The filter bottle assembly according to 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, the through portion is extended out of the through opening of the high end, 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. 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. 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. The filter bottle assembly of claim 21, wherein The fixing portion of the constraint member is connected to the through portion, the constraint portion is extended 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. The filter bottle assembly of claim 22, wherein The shell further has an extension portion extending from the connecting portion, 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 extension portion respectively, wherein the first fluid channel is formed in the central region of the lower end portion, and the second fluid channel is formed in the edge region extending outward from the central region of the lower end portion. The filter bottle assembly of claim 19, wherein The inner side of the opening part of the filter bottle cap is at least partially in physical contact with the upper side of the high end of the partition. The filter bottle assembly of claim 19, wherein The filter bottle cap further forms a contact part, wherein the contact part extends between the mounting part and the lead-through part, and wherein the contact part is arranged to at least partially contact the upper side of the high end of the partition. The filter bottle assembly of claim 25, wherein The contact part extends upwardly and inwardly from the mounting part to the lead-through part. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle assembly of claim 19, wherein Further comprising a constraint part, wherein the constraint part is fixedly connected to the lead-through part, and the high end of the partition is partially arranged between the top of the filter bottle cap and the constraint part. The filter bottle assembly according to any one of claims 1-15, wherein The filter bottle cap comprises an opening part, a mounting part extending from the opening part, and a lead-through part extending from the opening part, and the high end of the partition forms a through opening, wherein the lead-through part and the opening part form a first lead-through channel extending from the opening part to the lead-through part and a second lead-through channel extending from the opening part to the lead-through part, wherein the lead-through part penetrates out of the through opening of the high end of the partition, and wherein the lead-through part 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. The filter bottle assembly of claim 31, wherein Further comprising a center seal, wherein the center seal is arranged between the lead-through part of the filter bottle cap and the opening inner wall of the through opening of the high end of the partition. The filter bottle assembly of claim 32, wherein Further comprising a constraint part, wherein the constraint part comprises a fixed part and a constraint part, and the constraint part and the fixed part of the constraint part are arranged at the high end of the partition and the lead-through part of the filter bottle cap, respectively. The filter bottle assembly of claim 33, wherein The fixed part of the constraint part is connected to the lead-through part, the constraint part extends from the fixed part to the high end of the partition, and the center seal is constrained between the high end of the partition and the lead-through part of the filter bottle cap; the constraint part is provided with a communication channel, and the first lead-through channel and the second lead-through channel pass through the communication channel. The filter bottle assembly of claim 31, wherein The inner side of the opening part of the filter bottle cap is at least partially in physical contact with the upper side of the high end of the partition. The filter bottle assembly of claim 31, wherein The filter bottle cap further forms a contact part, wherein the contact part extends between the mounting part and the lead-through part, and wherein the contact part is arranged to at least partially contact the upper side of the high end of the partition. The filter bottle assembly of claim 36, wherein The contact part extends upwardly and inwardly from the mounting part to the lead-through part. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle assembly according to 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle assembly of claim 49, wherein The contact portion extends upwardly and inwardly from the mounting portion to the conducting portion. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle 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. The filter bottle assembly according to 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. The filter bottle assembly of claim 55, wherein The water inlet and the water 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. The filter bottle 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. The filter bottle assembly according to 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. The filter bottle 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. The filter bottle assembly of claim 59, wherein The water inlet and the water 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. A filter bottle device characterized by Comprise: a filter core; and The filter bottle assembly of any one of claims 1-60, 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. A filter bottle device characterized by Comprise: a filter core; and The filter bottle assembly of any one of claims 31-41, wherein the filter core is arranged in the accommodating 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. The bottle filtering device of claim 62, 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.

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