Filter bottle device and filter bottle assembly

Abstract

The utility model provides a filter flask device which comprises a filter flask, a filter element, a filter flask cover, a packing piece and a first sealing piece, the filter flask comprises a shell, the packing piece comprises a high end and a low end extending outwards and downwards from the high end, the shell comprises an opening end, a connecting part and an extending part, the connecting part is connected with the opening end, and the extending part is connected with the connecting part. Wherein the connecting part extends between the open end and the extending part, the extending part extends from the connecting part, the shell is provided with a containing cavity, the containing cavity is provided with a mounting opening formed in the open end of the shell, and the filter element is arranged in the containing cavity.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a filter bottle device and a filter bottle assembly. Background Art

[0002] In existing filter bottle devices, the seal is directly positioned between the filter bottle cap and the filter bottle. To ensure an effective seal, the filter bottle cap and filter bottle must remain tightly connected, which greatly complicates their connection and removal. This is especially true when the two are connected via a threaded structure, which requires significant tightening and unscrewing. Disassembly also requires considerable force.

[0003] The existing filter bottle device seal arrangement includes two types: pressure seal and side seal. Figure 1 As shown, seal 31P is configured as a compression seal, while seal 32P is configured as a side seal. It will be appreciated that if compression seal is used, the filter bottle cap 2P and filter bottle 1P must be tightened as tightly as possible to flatten seal 31P and achieve a reliable seal. This inevitably makes it difficult to unscrew the filter bottle cap 2P and filter bottle 1P during disassembly. Furthermore, since the diameter of the annular ring formed by seal 31P is not less than the inner diameter of filter bottle 1P, i.e., seal 31P is relatively large, the friction caused by seal 31P when filter bottle cap 2P and filter bottle 1P rotate relative to each other is significant, further hindering the tightening and unscrewing processes of filter bottle cap 2P and filter bottle 1P. Correspondingly, if sealing is performed using a side seal, although the degree of tightening of the filter bottle cap 2P and the filter bottle 1P can be slightly reduced, the seal 32P also has a larger size, which will also cause greater friction, thereby causing greater obstacles to the tightening and unscrewing processes of the filter bottle cap 2P and the filter bottle 1P.

[0004] Furthermore, since the filter bottle 1P and filter bottle cover 2P are typically made of plastic, and the filter bottle cover 2P is not a regular cylindrical shape, high roundness cannot be guaranteed. This forces filter bottle manufacturers to select seals with a large compression capacity when selecting seals to compensate for the sealing difficulties caused by plastic deformation. However, when replacing the filter element of the filter bottle, the seals must also be replaced. This large compression capacity makes it difficult for the seals to rebound. If the seals are continued to be used, the effectiveness and reliability of the seal cannot be guaranteed.

[0005] Moreover, during the tightening process of the filter bottle cap 2P and the filter bottle 1P, they move relative to each other (for example, one moves clockwise and the other moves counterclockwise). Neither the seal 31P nor the seal 32P can rotate with the filter bottle cap 2P or the filter bottle 1P, which causes the seal to be easily twisted after the filter bottle cap 2P and the filter bottle 1P are tightened, resulting in seal failure and water leakage. Utility Model Content

[0006] The main advantage of the present invention is that it provides a filter bottle device including a sealing member that can rotate relative to the filter bottle cap, and the sealing member is sealed with the filter bottle, thereby replacing the traditional sealing method of directly providing a sealing member between the filter bottle cap and the filter bottle. Moreover, during the tightening and unscrewing process of the filter bottle cap and the filter bottle, the sealing member basically does not rotate relative to the filter bottle, which can greatly reduce the difficulty of tightening and unscrewing the filter bottle cap and the filter bottle. In other words, the present invention creatively makes the "fixing" and "sealing" between the filter bottle cap and the filter bottle as independent of each other as possible, and utilizes the sealing member to replace the filter bottle cap to assume the "sealing" function, making the filter bottle cap and the filter bottle easier to tighten and unscrew.

[0007] Another advantage of the present invention is that it provides a filter bottle device, wherein the sealing member is at least partially disposed between the filter bottle cap and the filter bottle, and the sealing member is disposed between the inner side of the sealing member and the outer side of the filter bottle, thereby preventing the filter bottle from being compressed and deformed (increasing its inner diameter) when the sealing member is disposed between the outer side of the sealing member and the inner side of the filter bottle, thereby damaging the seal between the sealing member and the filter bottle. Another advantage of the present invention is that it provides a filter bottle device, wherein during the tightening and unscrewing process of the filter bottle cap and the filter bottle, the sealing member can be substantially prevented from rotating relative to the filter bottle, thereby making the seal between the sealing member and the filter bottle less likely to be twisted, thereby reducing the risk of seal failure and water leakage.

[0008] Accordingly, according to an embodiment of the present invention, a filter bottle assembly having at least one of the aforementioned advantages includes:

[0009] A filter bottle comprising a housing;

[0010] filter bottle cap;

[0011] a packing member including a high end and a low end extending outwardly and downwardly from the high end; and

[0012] The filter bottle cap is adapted to be detachably connected to the outer side wall of the connecting portion of the housing, the upper end of the sealing member is located on the inner side of the filter bottle cap, the lower end of the sealing member is disposed between the inner side wall of the filter bottle cap and the outer wall of the open end of the housing, and the first sealing member is disposed between the outer wall of the open end of the housing and the inner peripheral wall of the lower end of the sealing member, wherein when the filter bottle cap is connected to the connecting portion of the housing so that the filter bottle cap is pressed against the sealing member, the filter bottle cap can drive the sealing member to move relative to the open end of the housing of the filter bottle.

[0013] According to another aspect of the present invention, the present invention provides a filter bottle device, comprising:

[0014] filter element;

[0015] A filter bottle comprising a housing;

[0016] filter bottle cap;

[0017] a packing member including a high end and a low end extending outwardly and downwardly from the high end; and

[0018] A first sealing member, wherein the housing includes an open end, a connecting portion, and an extending portion, wherein the connecting portion extends between the open end and the extending portion, and the extending portion extends from the connecting portion, wherein the housing has a receiving cavity, the receiving cavity having a mounting opening formed at the open end of the housing, wherein the filter bottle cover is adapted to be detachably connected to the outer side wall of the connecting portion of the housing, the upper end of the septum is located on the inner side of the filter bottle cover, the lower end of the septum is disposed between the inner side wall of the filter bottle cover and the outer wall of the open end of the housing, and the first sealing member is disposed between the outer wall of the open end of the housing and the inner peripheral wall of the lower end of the septum, wherein when the filter bottle cover is connected to the connecting portion of the housing so that the filter bottle cover is pressed against the septum, the filter bottle cover can drive the septum to move relative to the open end of the housing of the filter bottle, wherein the filter element is disposed in the receiving cavity, and the upper end of the septum is disposed between the filter bottle cover and the filter element.

[0019] The above and other advantages of the present invention will be fully reflected in conjunction with the following description and the accompanying drawings.

[0020] The above and other advantages and features of the present invention are fully reflected in the following detailed description of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of an existing filter bottle device.

[0022] Figure 2A It is a three-dimensional diagram of the filter bottle device according to the first embodiment of the present utility model.

[0023] Figure 2B It is a cross-sectional view of the filter bottle device according to the first embodiment of the present utility model.

[0024] Figure 2C It is a cross-sectional view of the filter bottle device according to the first embodiment of the present utility model, wherein the conducting channel of the sealing member is connected to the water cavity between the filter element and the housing.

[0025] Figure 2D It is a cross-sectional view of the filter bottle device according to the first embodiment of the present utility model, wherein the conducting channel of the sealing member is connected to the filter element (or the opening of the filter element).

[0026] Figure 3A It is a three-dimensional view of the sealing member of the filter bottle device according to the first embodiment of the present utility model.

[0027] Figure 3B 4 is a cross-sectional view of a sealing member of a filter bottle device according to a first embodiment of the present invention.

[0028] Figure 3C 2 is another cross-sectional view of the sealing member of the filter bottle device according to the first embodiment of the present invention, wherein the metal ring is provided on the outer peripheral wall of the lower end of the sealing member.

[0029] Figure 3D It is a three-dimensional diagram of the sealing member, the retaining tray and the second sealing member of the filter bottle device according to the first embodiment of the present utility model.

[0030] Figure 3E It is a three-dimensional view of the holding tray of the filter bottle device according to the first embodiment of the present utility model.

[0031] Figure 4A It is a three-dimensional diagram of an optional implementation of the filter bottle device according to the first embodiment of the present utility model.

[0032] Figure 4B It is a cross-sectional view of the optional implementation of the filter bottle device according to the first embodiment of the present utility model.

[0033] Figure 5AIt is a three-dimensional view of the optional sealing member of the filter bottle device according to the first embodiment of the present utility model.

[0034] Figure 5B It is a cross-sectional view of the optional sealing member of the filter bottle device according to the first embodiment of the present utility model.

[0035] Figure 6A It is a three-dimensional diagram of a filter bottle device according to a second embodiment of the present invention.

[0036] Figure 6B It is a cross-sectional view of a filter bottle device according to a second embodiment of the present utility model, wherein the filter bottle cover and the filter bottle are connected by threads.

[0037] Figure 7A It is a cross-sectional view of a filter bottle cover of a filter bottle device according to a second embodiment of the present utility model, wherein the connection mode of the filter bottle cover is a threaded connection.

[0038] Figure 7B It is a three-dimensional view of a sealing member of a filter bottle device according to a second embodiment of the present utility model.

[0039] Figure 7C 4 is a cross-sectional view of a sealing member of a filter bottle device according to a second embodiment of the present invention.

[0040] Figure 7D It is a cross-sectional view of a filter bottle device according to a second embodiment of the present utility model, wherein the filter bottle cover and the filter bottle are connected by a rotating buckle.

[0041] Figure 7E It is a cross-sectional view of a filter bottle cover of a filter bottle device according to a second embodiment of the present invention, wherein the connection mode of the filter bottle cover is a rotary snap connection.

[0042] Figure 7F It is a partial three-dimensional view of a filter bottle of a filter bottle device according to the second embodiment of the present utility model, wherein the connection mode of the filter bottle is a rotary snap connection.

[0043] Figure 8A It is a three-dimensional view of a filter bottle device according to a third embodiment of the present utility model.

[0044] Figure 8B It is a cross-sectional view of a filter bottle device according to a third embodiment of the present utility model.

[0045] Figure 9A It is a three-dimensional view of a sealing member of a filter bottle device according to a third embodiment of the present utility model.

[0046] Figure 9B 4 is a cross-sectional view of a sealing member of a filter bottle device according to a third embodiment of the present invention.

[0047] Figure 10A It is a three-dimensional view of a filter bottle device according to a fourth embodiment of the present utility model.

[0048] Figure 10B It is a cross-sectional view of a filter bottle device according to a fourth embodiment of the present utility model.

[0049] Figure 11A It is a three-dimensional view of a sealing member of a filter bottle device according to a fourth embodiment of the present utility model.

[0050] Figure 11B 4 is a cross-sectional view of a sealing member of a filter bottle device according to a fourth embodiment of the present invention.

[0051] Figure 12A It is a three-dimensional diagram of an optional implementation of the filter bottle device according to the fourth embodiment of the present utility model.

[0052] Figure 12B It is a cross-sectional view of the optional implementation of the filter bottle device according to the fourth embodiment of the present utility model.

[0053] Figure 13A It is a three-dimensional view of the sealing member of the optional implementation of the filter bottle device according to the fourth embodiment of the present utility model.

[0054] Figure 13B It is a cross-sectional view of the optional sealing member of the filter bottle device according to the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0055] The following description is provided to enable those skilled in the art to implement the present invention. Other obvious replacements, modifications, and variations may occur to those skilled in the art. Therefore, the scope of protection of the present invention should not be limited to the exemplary embodiments described herein.

[0056] Those skilled in the art should understand that, unless otherwise specified herein, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple.

[0057] Those skilled in the art should understand that, unless otherwise specified herein, the directions or positions referred to by terms such as "longitudinal," "transverse," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are based on the directions or positions shown in the accompanying drawings and are merely for the purpose of facilitating the description of the present invention. They do not indicate or imply that the devices or components involved must have a specific direction or position. Therefore, the above terms should not be construed as limiting the present invention.

[0058] Refer to the attached drawings of this utility model specification Figures 2A to 3E As shown, a filter bottle device according to a first embodiment of the present invention is illustrated, which includes a filter bottle 1, a filter element 12, a filter bottle cover 2, a sealing member 3 and a first sealing member 51, wherein the filter bottle 1 includes a shell 11, the sealing member 3 includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the shell 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112, and the extending portion 112 extends from the connecting portion 113, wherein the shell 11 has an accommodating cavity 110, the accommodating cavity 110 has an installation opening 1101 formed at the open end 111 of the shell 11, the filter element 12 is arranged in the accommodating cavity 110, wherein the filter bottle cover 2 is suitable for being detachably connected to the outer side wall 1131 of the connecting portion 113 of the shell 11, and the high end 31 of the sealing member 3 is located on the inner side of the filter bottle cover 2. Preferably, the filter element 12 and the housing 11 form a water cavity 120 therebetween. Preferably, the high end 31 of the sealing member 3 is arranged between the filter bottle cover 2 and the filter element 12, the low end 32 of the sealing member 3 is arranged between the inner side wall 24 of the filter bottle cover 2 and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner circumferential wall 321 of the low end 32 of the sealing member 3, wherein when the filter bottle cover 2 is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2 is pressed against the sealing member 3, the filter bottle cover 2 can drive the sealing member 3 to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3 through the first sealing member 51. In other words, when the filter bottle cover 2 is fastened to the connecting portion 113 of the shell 11, the filter bottle cover 2 can be pressed against the sealing member 3 to drive the sealing member 3 to move relative to the open end 111 of the shell 11 of the filter bottle 1 and to achieve sealing between the open end 111 of the shell 11 of the filter bottle 1 and the lower end 32 of the sealing member 3 through the first sealing member 51.

[0059] It is understood that the fastened connection between the filter bottle cover 2 and the filter bottle 1 of the filter bottle device of the present invention refers to an appropriate connection between the filter bottle cover 2 and the filter bottle 1 of the filter bottle device of the present invention through a certain connection method, so that the filter bottle cover 2 is firmly connected to the filter bottle 1, thereby enabling the filter bottle cover 2 to press and drive the sealing member 3 to move relative to the open end 111 of the housing 11 of the filter bottle 1 and press against the open end 111 of the housing 11. It is understood that the connection between the filter bottle cover 2 and the filter bottle 1 of the filter bottle device of the present invention can be achieved in various ways, for example, through a threaded connection, a rotary snap connection or a clamp connection, or other appropriate methods to achieve a detachable connection.

[0060] The arrangement of the filter bottle 1, the filter bottle cover 2, the sealing member 3, and the first sealing member 51 of the filter bottle device of the present invention provides numerous advantages. First, when the filter bottle cover 2 is securely connected to the connection portion 113 of the housing 11 of the filter bottle 1, the filter bottle cover 2 rotates relative to the filter bottle 1 and moves toward the extension portion 112 of the housing 11 of the filter bottle 1, thereby compressing and driving the sealing member 3 to move relative to the open end 111 of the housing 11 of the filter bottle 1 and toward the extension portion 112 of the housing 11. During this process, due to the obstruction of the first sealing member 51 between the open end 111 of the housing 11 of the filter bottle 1 and the lower end 32 of the sealing member 3, the frictional force of the filter bottle cover 2 on the sealing member 3 makes it difficult for the sealing member 3 to rotate synchronously. Therefore, the sealing member 3 basically does not rotate relative to the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, thereby basically eliminating the obstruction of the large-size sealing member to the relative rotation of the filter bottle cover 2 and the filter bottle 1, and can greatly reduce the difficulty of tightening the filter bottle cover 2 and the filter bottle 1. The arrangement of the filter bottle 1, filter bottle cap 2, seal 3, and first sealing member 51 of the filter bottle device of the present invention allows an operator or user to tighten the filter bottle cap 2 without having to tighten it vigorously. Instead, the operator or user simply rotates the seal 3 to a predetermined position to ensure that the inner peripheral wall 321 of the lower end 32 of the seal 3 presses the first sealing member 51 against the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1. This allows for relatively easy rotation between the filter bottle cap 2 and the filter bottle 1 (during tightening) without being substantially hindered by the large-sized seal. Accordingly, unscrewing (or removing) the filter bottle cap 2 from the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1 is also relatively easy. In other words, the present invention creatively proposes to make the "fixing" and "sealing" between the filter bottle cover 2 and the filter bottle 1 as independent and separate as possible, and utilizes the sealing member 3 to replace the filter bottle cover 2 to assume the "sealing" function, making it easier to tighten and unscrew the filter bottle cover 2 and the filter bottle 1. In addition, because the sealing member 3 can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to twist, which can reduce the risk of seal failure and water leakage. Secondly, when water pressure acts on the inner side of the filter bottle 1 of the filter bottle device of the present invention, the water pressure can be used to laterally (radially) support the bottle wall of the filter bottle 1 from the inside of the filter bottle 1 to obtain a more stable structure.At this time, due to the external action of the filter bottle cap 2 and the internal pressure of the water pressure within the filter bottle 1, the open end 111 of the filter bottle 1 can have a better roundness and expand outward to further compress the first sealing member 51, thereby improving the seal between the sealing member 3 and the filter bottle 1. Furthermore, the improved seal between the sealing member 3 and the filter bottle 1 also allows manufacturers or users to select a seal with a smaller compression amount than traditional sealing methods, thereby allowing the seal to be used multiple times without having to replace it every time the filter element is replaced. The first sealing member 51 with a smaller compression amount also reduces the obstruction when the sealing member 3 and the filter bottle 1 undergo relative translation, which helps to further reduce the difficulty of tightening and unscrewing the filter bottle cap 2 and the filter bottle 1. Finally, the arrangement of the filter bottle 1, the filter bottle cover 2, the sealing member 3, and the first sealing member 51 of the filter bottle device of the present invention further overcomes the drawback of the first sealing member 51 being arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3. When the first sealing member 51 is arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3, since the water pressure within the filter bottle 1 is from the inside out, when the inner wall of the filter bottle 1 is subjected to force, the housing 11 of the filter bottle 1 expands outward, which may cause the first sealing member 51 arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3 to loosen, and cause the seal between the inner wall of the open end 111 and the outer wall of the sealing member 3 to be destroyed.

[0061] As shown in the attached figure Figure 2B and Figure 3C As shown, the filter bottle device of the present invention further includes a metal ring 60, which is disposed on the outer peripheral wall 322 of the lower end 32 of the sealing member 3. It will be appreciated that the metal ring 60 disposed on the outer peripheral wall 322 of the lower end 32 of the sealing member 3 can reduce deformation or expansion of the lower end 32 of the sealing member 3 under pressure, thereby improving the seal between the sealing member 3 and the open end 111 of the housing 11 of the filter bottle 1 and preventing the lower end 32 of the sealing member 3 from rupturing under excessive pressure. Furthermore, the smoother surface of the metal ring 60 further reduces friction between the outer peripheral wall 322 of the lower end 32 of the sealing member 3 and the filter bottle cap 2.

[0062] As shown in the attached figure Figures 2A to 3EAs shown, the filter bottle cover 2 of the filter bottle device of the present invention includes an opening portion 21 and a mounting portion 22 extending from the opening portion 21. The sealing member 3 further includes a conducting portion 33, wherein the lower end 32 and the conducting portion 33 integrally extend from two opposite sides of the upper end 31, wherein the opening portion 21 forms a through-opening 210, and the conducting portion 33 forms a conducting channel 330, wherein the conducting portion 33 passes through the through-opening 210 of the opening portion 21. It can be understood that the conducting channel 330 is adapted to communicate with the filter element 12 (or the water inlet or outlet of the filter element 12). Preferably, the high end 31 and the inner wall 1112 of the open end 111 of the housing 11 enclose a conducting cavity 320, wherein the conducting cavity 320 is adapted to communicate with the conducting passage 330 and the water cavity 120 or the filter element 12, respectively, and the conducting portion 33 extends through the through opening 210 of the opening 21. Furthermore, the mounting portion 22 of the filter bottle cover 2 of the filter bottle device of the present invention is adapted to be fastened to the connecting portion 113 of the housing 11.

[0063] As shown in the attached figure Figures 2A to 3E As shown, the open end 111 of the housing 11 of the filter bottle device of the present invention includes a main body 1113 and a sealing portion 1114 extending outward from the main body 1113. The first sealing member 51 is disposed between the sealing portion 1114 of the open end 111 and the inner circumferential wall 321 of the lower end 32 of the septum 3. Preferably, the lower end 32 is flared along its extension direction. This facilitates compression of the first sealing member 51 and movement relative to the open end 111 of the housing 11 when pressed and driven by the filter bottle cap 2, thereby gradually achieving a seal between the sealing portion 1114 of the open end 111 and the lower end 32 of the septum 3. Accordingly, when the filter bottle cap 2 is removed, the septum 3 is more easily removed from the sealing portion 1114 of the open end 111.

[0064] As shown in the attached figure Figures 2A to 3EAs shown, the upper end 31 of the sealing member 3 of the filter bottle device of the present invention forms a guide groove 310, wherein the guide groove 310 is disposed adjacent to the lower end 32 of the sealing member 3 and facing the open end 111 of the housing 11, wherein the top end 1115 of the open end 111 of the housing 11 is configured to be positioned within the guide groove 310 (the inner diameter of the top end 1115 of the open end 111 is slightly larger than the outer diameter of the guide groove 310). Accordingly, the guide groove 310 of the upper end 31 can guide the top end 1115 of the open end 111 of the housing 11 into the guide groove 310 and guide and assist the lower end 32 of the sealing member 3 to press against the outer wall 1111 of the open end 111 of the housing 11 when the filter bottle cap 2 presses and drives the sealing member 3 to move relative to the open end 111 of the housing 11 of the filter bottle 1. It can be understood that the guide groove 310, the open end 111 of the shell 11, the first sealing member 51 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3 cooperate with each other, so that the guide groove 310 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3 better wrap the first sealing member 51. It can be understood that when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3 to deform outward, the guide groove 310 can make the inner circumferential wall 321 of the lower end 32 of the sealing member 3 always press against the first sealing member 51 and deform outward synchronously with the open end 111 of the shell 11 (because due to the positioning function of the guide groove 310, when the inner circumferential wall 321 of the lower end 32 of the sealing member 3 deforms excessively outward under the water pressure, the guide groove 310 will press against the inner circumferential wall 321 of the lower end 32 of the sealing member 3). The inner wall 1112 of the open end 111 of the shell 11 prevents the inner circumferential wall 321 of the lower end 32 of the sealing member 3 from being excessively deformed outward), that is, when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3 to deform outward, the first sealing member 51 is always pressed by the inner circumferential wall 321 of the lower end 32 of the sealing member 3 to maintain the seal between the inner circumferential wall 321 of the lower end 32 of the sealing member 3 and the open end 111 of the shell 11. When the water pressure in the filter bottle 1 drops and causes the open end 111 of the shell 11 to deform inward, the open end 111 of the shell 11 presses inward against the guide groove 310, so that the guide groove 310 further pulls the inner circumferential wall 321 of the lower end 32 of the sealing member 3 to deform inward, so that the inner circumferential wall 321 of the lower end 32 of the sealing member 3 always presses the first sealing member 51 and deforms inward synchronously with the open end 111 of the shell 11.

[0065] As shown in the attached figure Figures 2A to 3E As shown, preferably, the filter bottle device of the present invention further includes a second sealing member 52, wherein the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. It can be understood that the second sealing member 52 provides a flexible connection between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. In particular, the housing 11 and the sealing member 3 are often made of plastic material, which causes the product to be easily deformed after injection molding. The flexible connection reduces the high production precision requirement for matching the inner diameter of the top end 1115 of the open end 111 with the outer diameter of the guide groove 310.

[0066] It is noteworthy that the second sealing member 52 further improves the seal between the lower end 32 of the sealing member 3 and the open end 111 of the housing 11 through at least two sealing functions. First, the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310, thereby strengthening the seal between the lower end 32 of the sealing member 3 and the open end 111 of the housing 11. Secondly, when the water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the lower end 32 of the sealing member 3 and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3 to deform outward. At this time, the lower end 32 of the sealing member 3 moves outward, driving the groove wall 3101 of the guide groove 310 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.Therefore, when the water pressure in the filter bottle 1 is low, the second sealing member 52 provided between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 can achieve the sealing between the open end 111 of the shell 11 and the sealing member 3; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure, and the first sealing member 51 tightly seals the gap between the inner circumferential wall 321 of the lower end 32 of the sealing member 3 and the outer wall 1111 of the open end 111 of the shell 11 under the clamping action of the inner circumferential wall 321 of the lower end 32 of the sealing member 3 and the open end 111 of the shell 11; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure. When water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the inner circumferential wall 321 of the lower end 32 of the sealing member 3 and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3 to deform outward, and the water pressure will compress the first sealing member 51 to deform, driving the lower end 32 of the sealing member 3 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.

[0067] As shown in the attached figure Figures 2A to 3EAs shown, the filter bottle device of the present invention further includes a retaining bracket 53, which is fixed between the upper end 31 of the sealing member 3 and the filter element 12. The retaining bracket 53 is at least partially positioned opposite the guide groove 310 to maintain the second sealing member 52 at least partially within the guide groove 310. Preferably, the retaining bracket 53 is positioned below the upper end 31 of the sealing member 3 and is surrounded by the inner wall 1112 of the open end 111 of the housing 11. Preferably, the retaining bracket 53 is secured to the sealing member 3 by welding. The retaining bracket 53 can also be secured to the sealing member 3 by other means, such as screws. More preferably, the retaining bracket 53 is integrally formed with the sealing member 3. Preferably, the retaining bracket 53 further has a notch 531, through which a user can remove the second sealing member 52 disposed in the guide groove 310 using a simple tool such as a screwdriver. It can be understood that the first seal 51 is arranged on the outer wall 1111 of the open end 111 of the shell 11, and the second seal 52 is arranged on the guide groove 310 of the sealing member 3, so that the first seal 51 and the second seal 52 are easy to install and replace.

[0068] It can be understood that as shown in the attached figure Figures 2A to 3EAs shown, when the filter bottle device has three openings, the filter bottle 1 further includes a first fluid channel 1121 and a second fluid channel 1122, the extension portion 112 of the shell 11 has a lower end portion 1120, and the first fluid channel 1121 and the second fluid channel 1122 of the filter bottle 1 are respectively arranged at the lower end portion 1120 of the filter bottle 1, wherein the first fluid channel 1121 is formed in a central area 11201 of the lower end portion 1120, and the second fluid channel 1122 is formed in an edge area 11202 extending outward from the central area 11201 of the lower end portion 1120. It can be understood that the filter element 12 can be a reverse osmosis membrane filter element or a three-port ultrafiltration membrane filter element. For example, when the filter element 12 is a reverse osmosis membrane filter element, the water cavity 120 is separated by the filter element 12 into a first water cavity 1201 and a second water cavity 1202, wherein the first water cavity 1201 is connected to the conduction cavity 320, and the second water cavity 1202 is connected to the second fluid channel 1122. The water inlet end of the filter element 12 is connected to the first water cavity 1201 (or the conduction cavity 320), the sewage discharge end of the filter element 12 is connected to the second water cavity 1202, and the purified water outlet of the filter element 12 is sealed. It is connected to the first fluid channel 1121, taking the conducting channel 330 as the inflow channel of raw water, the first fluid channel 1121 as the outflow channel of purified water, and the second fluid channel 1122 as the outflow channel of sewage as an example, raw water flows in from the conducting channel 330, passes through the conducting cavity 320, and flows into the water inlet end of the filter element 12. The purified water purified by the filter element 12 is discharged from the purified water outlet and finally flows out through the first fluid channel 1121. The sewage flows into the second water cavity 1202 through the sewage discharge end of the filter element 12 and is then discharged through the second fluid channel 1122. It can be understood that the conducting channel 330, the first fluid channel 1121 and the second fluid channel 1122 can form threaded openings, or can form quick-connect interfaces as needed. It can be understood that, as shown in the accompanying drawings Figure 2C As shown, when the filter bottle 1 is a two-port filter bottle (the filter bottle 1 is no longer provided with the second fluid channel 1122), when the conducting cavity 320 of the sealing member 3 is connected to the conducting channel 330 and the water cavity 120 respectively, the raw water can flow from the conducting channel 330 to the water cavity 120, and after being purified by the filter element 12, it flows out from the clean water port of the filter element 12 and the first fluid channel 1121. It can be understood that, as shown in the accompanying drawings Figure 2DAs shown, when the conducting channel 330 of the sealing member 3 is connected to the filter element 12 (or the opening of the filter element 12), raw water can flow from the first fluid channel 1121 into the water cavity 120 and flow to the filter element 12. After being purified by the filter element 12, the purified water flows out from the conducting channel 330.

[0069] As shown in the attached figure Figures 2A to 3E As shown, the filter bottle device further includes a limiting member 9, and the sealing member 3 further includes a limiting portion 34, wherein the limiting portion 34 extends outward from the conducting portion 33, and the limiting member 9 is suitable for being arranged between the limiting portion 34 and the opening portion 21 of the filter bottle cover 2, so that the filter bottle cover 2 and the sealing member 3 cannot move relative to each other and can form a relative rotation with less resistance. When the filter bottle cover 2 is unscrewed (or unscrewed) from the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, the sealing member 3 is restricted by the limiting member 9 at the opening portion 21 of the filter bottle cover 2, and the torque of the rotational friction force (driving force) applied by the limiting member 9 and the opening portion 21 of the filter bottle cover 2 to the sealing member 3 is much smaller than the torque of the resistance force of the relative rotation of the first sealing member 51 between the sealing portion 1114 at the open end 111 of the filter bottle 1 and the sealing member 3, so that the filter bottle cover 2 is basically unable to drive the sealing member 3 to rotate. Therefore, the sealing member 3 basically does not rotate relative to the sealing portion 1114 of the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the sealing portion 1114 of the open end 111 of the shell 11 of the filter bottle 1 (the sealing member 3 moves in a direction away from the extending portion 112 of the shell 11). The limiting member 9 is, for example, a retaining spring, and may also be a nut or other limiting means, for example, it may be fixed to the limiting portion 34 of the packing member 3 with a nut.

[0070] Attached Figures 4A to 5BThe figure shows an optional implementation of the filter bottle device according to the first embodiment of the present invention, which includes a filter bottle 1, a filter element 12, a filter bottle cover 2A, a sealing member 3A and a first sealing member 51, wherein the filter bottle 1 includes a housing 11, the sealing member 3A includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the housing 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112. The extension 112 extends from the connecting portion 113, wherein the housing 11 has a receiving cavity 110, and the receiving cavity 110 has a mounting opening 1101 formed at the open end 111 of the housing 11. The filter element 12 is disposed within the receiving cavity 110, wherein the filter bottle cover 2A is adapted to be detachably connected to the outer sidewall 1131 of the connecting portion 113 of the housing 11, and the high end 31 of the sealing member 3A is located on the inner side of the filter bottle cover 2A. Preferably, the filter element 12 and the housing 11 form a water cavity 120 therebetween. Preferably, the high end 31 of the sealing member 3A is arranged between the filter bottle cover 2A and the filter element 12, the low end 32 of the sealing member 3A is arranged between the inner side wall 24 of the filter bottle cover 2A and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner peripheral wall 321 of the low end 32 of the sealing member 3A, wherein when the filter bottle cover 2A is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2A is pressed against the sealing member 3A, the filter bottle cover 2A can drive the sealing member 3A to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3A through the first sealing member 51. In other words, when the filter bottle cover 2A is fastened to the connection portion 113 of the shell 11, the filter bottle cover 2A can be pressed against the sealing member 3A to drive the sealing member 3A to move relative to the open end 111 of the shell 11 of the filter bottle 1 and to achieve sealing between the open end 111 of the shell 11 of the filter bottle 1 and the lower end 32 of the sealing member 3A through the first sealing member 51.

[0071] It is understood that the fastened connection between the filter bottle cover 2A and the filter bottle 1 of the filter bottle device of the present invention refers to an appropriate connection between the filter bottle cover 2A and the filter bottle 1 of the filter bottle device of the present invention through a certain connection method, so that the filter bottle cover 2A is firmly connected to the filter bottle 1, thereby enabling the filter bottle cover 2A to compress and drive the sealing member 3A to move relative to the open end 111 of the housing 11 of the filter bottle 1 and press against the open end 111 of the housing 11. It is understood that the connection between the filter bottle cover 2A and the filter bottle 1 of the filter bottle device of the present invention can be achieved in various ways, for example, through a threaded connection, a rotating snap connection or a clamp connection, or other appropriate methods to achieve a detachable connection.

[0072] The arrangement of the filter bottle 1, the filter bottle cover 2A, the septum 3A, and the first sealing member 51 of the filter bottle device of the present invention provides numerous advantages. First, when the filter bottle cover 2A is securely connected to the connection portion 113 of the housing 11 of the filter bottle 1, the filter bottle cover 2A rotates relative to the filter bottle 1 and moves toward the extension portion 112 of the housing 11 of the filter bottle 1, thereby compressing and driving the septum 3A to move relative to the open end 111 of the housing 11 of the filter bottle 1 and toward the extension portion 112 of the housing 11. During this process, due to the obstruction of the first sealing member 51 between the open end 111 of the housing 11 of the filter bottle 1 and the lower end 32 of the septum 3A, the frictional force of the filter bottle cover 2A on the septum 3A prevents the septum 3A from rotating synchronously. Therefore, the sealing member 3A basically does not rotate relative to the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, thereby basically eliminating the obstruction of the large-size sealing member to the relative rotation of the filter bottle cover 2A and the filter bottle 1, and can greatly reduce the difficulty of tightening the filter bottle cover 2A and the filter bottle 1. The arrangement of the filter bottle 1, the filter bottle cap 2A, the sealing member 3A, and the first sealing member 51 of the filter bottle device of the present invention allows an operator or user to tighten the filter bottle cap 2A without having to tighten it vigorously. Instead, the operator or user simply rotates the filter bottle cap 2A to a predetermined position to ensure that the inner peripheral wall 321 of the lower end 32 of the sealing member 3A presses the first sealing member 51 against the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1. This allows for relatively easy rotation between the filter bottle cap 2A and the filter bottle 1 (during tightening) without being substantially hindered by the large-sized sealing member. Accordingly, unscrewing (or removing) the filter bottle cap 2A from the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1 is also relatively easy. In other words, the present invention creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2A and the filter bottle 1 as independent and separate as possible, and utilizes the sealing member 3A to replace the filter bottle cap 2A to assume the "sealing" function, making it easier to tighten and unscrew the filter bottle cap 2A and the filter bottle 1. In addition, because the sealing member 3A can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to twist, which can reduce the risk of seal failure and water leakage. Secondly, when water pressure acts on the inner side of the filter bottle 1 of the filter bottle device of the present invention, the water pressure can be used to laterally (radially) support the bottle wall of the filter bottle 1 from the inside of the filter bottle 1 to obtain a more stable structure.At this time, due to the external action of the filter bottle cap 2A and the internal pressure of the water pressure within the filter bottle 1, the open end 111 of the filter bottle 1 can be made more round and expand outward to further compress the first sealing member 51, thereby improving the seal between the septum 3A and the filter bottle 1. Furthermore, the improved seal between the septum 3A and the filter bottle 1 allows manufacturers or users to select a seal with less compression than traditional sealing methods, thereby allowing the seal to be used multiple times without having to replace it every time the filter element is replaced. The first sealing member 51 with less compression also reduces the obstruction during relative translation between the septum 3A and the filter bottle 1, which helps further reduce the difficulty of tightening and unscrewing the filter bottle cap 2A and the filter bottle 1. Finally, the arrangement of the filter bottle 1, the filter bottle cap 2A, the sealing member 3A, and the first sealing member 51 of the filter bottle device of the present invention further overcomes the drawback of the first sealing member 51 being arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3A. When the first sealing member 51 is arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3A, since the water pressure within the filter bottle 1 is from the inside out, when the inner wall of the filter bottle 1 is subjected to force, the housing 11 of the filter bottle 1 expands outward, potentially causing the first sealing member 51 arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3A to loosen, thereby destroying the seal between the inner wall of the open end 111 and the outer wall of the sealing member 3A.

[0073] As shown in the attached figure Figures 4A to 5B As shown, the filter bottle cover 2A of the filter bottle device of the present invention includes an opening portion 21, a mounting portion 22 extending from the opening portion 21, and a conducting portion 23A extending from the opening portion 21. The upper end 31 of the sealing member 3A forms a through-opening 340A, wherein the conducting portion 23A and the opening portion 21 form a conducting channel 230A extending from the opening portion 21 to the conducting portion 23A, wherein the conducting portion 23A extends through the through-opening 340A of the upper end 31. It will be understood that the conducting channel 230A is adapted to communicate with the water cavity 120 (or the water inlet or outlet of the filter element 12). Furthermore, the mounting portion 22 of the filter bottle cover 2A of the filter bottle device of the present invention is adapted to be fastened to the connecting portion 113 of the housing 11.

[0074] As shown in the attached figure Figures 4A to 5BAs shown, preferably, a seal is formed between the guide portion 23A of the filter bottle cap 2A and the upper end 31 of the septum 3A in the filter bottle device of the present invention. The filter bottle device of the present invention further includes a central seal 54, which is disposed between the guide portion 23A of the filter bottle cap 2A and the through-opening 340A of the upper end 31 of the septum 3A to ensure a seal between the guide portion 23A of the filter bottle cap 2A and the upper end 31 of the septum 3A. It is worth noting that, because the central seal 54 is disposed between the guide portion 23A of the filter bottle cap 2A and the through-opening 340A of the upper end 31 of the septum 3A, the driving torque of the central seal 54 is less than the torque generated by the resistance of the first seal 51 (and the second seal 52). Therefore, the driving force of the central seal 54 is essentially unable to drive the septum 3A to rotate relative to the filter bottle 1.

[0075] As shown in the attached figure Figures 4A to 5B As shown, the filter bottle device of the present invention further has a restraining member 4, which includes a fixing portion 41 and a restraining portion 42, wherein the restraining portion 42 and the fixing portion 41 of the restraining member 4 are respectively arranged on the high end 31 of the sealing member 3A and the conducting portion 23A of the filter bottle cover 2A, for restraining the sealing member 3A and preventing the sealing member 3A from detaching from the filter bottle cover 2A.

[0076] As shown in the attached figure Figures 4A to 5B As shown, the fixing portion 41 of the restraining member 4 of the filter bottle device of the present invention is connected to the conducting portion 23A. The restraining portion 42 extends from the fixing portion 41 to the high end 31 of the sealing member 3A to restrain the sealing member 3A. Preferably, the restraining member 4 is provided with a communication channel 40, wherein the communication channel 40 is formed in the fixing portion 41 and communicates with the conducting channel 230A. Preferably, the conducting channel 230A passes through the communication channel 40.

[0077] As shown in the attached figure Figures 4A to 5B As shown, preferably, the central seal 54 is constrained between the high end 31 of the sealing member 3A and the conducting portion 23A of the filter bottle cover 2A. Preferably, the fixing portion 41 of the constraint member 4 is fixed to the conducting portion 23A by screws. It can be understood that the connection structure between the fixing portion 41 and the conducting portion 23A includes but is not limited to welding, screw fixing, threaded connection, snap connection or interference connection, etc., and the two can even be connected using additional connecting parts. As shown in the accompanying drawings Figures 4A to 5BAs shown, the open end 111 of the housing 11 of the filter bottle device of the present invention includes a main body 1113 and a sealing portion 1114 extending outward from the main body 1113. The first sealing member 51 is disposed between the sealing portion 1114 of the open end 111 and the inner circumferential wall 321 of the lower end 32 of the septum 3A. Preferably, the lower end 32 is flared along its extension direction. This facilitates compression of the first sealing member 51 and movement relative to the open end 111 of the housing 11 when pressed and driven by the filter bottle cap 2A, and facilitates gradual sealing between the sealing portion 1114 of the open end 111 and the lower end 32 of the septum 3A. Accordingly, when the filter bottle cap 2A is removed, the septum 3A is more easily removed from the sealing portion 1114 of the open end 111.

[0078] As shown in the attached figure Figures 4A to 5BAs shown, the upper end 31 of the sealing member 3A of the filter bottle device of the present invention forms a guide groove 310, wherein the guide groove 310 is located adjacent to the lower end 32 of the sealing member 3A and facing the open end 111 of the housing 11, wherein the top end 1115 of the open end 111 of the housing 11 is configured to be positioned within the guide groove 310 (the inner diameter of the top end 1115 of the open end 111 is slightly larger than the outer diameter of the guide groove 310). Accordingly, the guide groove 310 of the upper end 31 can guide the top end 1115 of the open end 111 of the housing 11 into the guide groove 310 and guide and assist the lower end 32 of the sealing member 3A to press against the outer wall 1111 of the open end 111 of the housing 11 when the filter bottle cap 2A presses and drives the sealing member 3A to move relative to the open end 111 of the housing 11 of the filter bottle 1. It can be understood that the guide groove 310, the open end 111 of the shell 11, the first seal 51 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3A cooperate with each other, so that the guide groove 310 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3A better wrap the first seal 51. It can be understood that when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner peripheral wall 321 of the lower end 32 of the sealing member 3A to deform outward, the guide groove 310 can make the inner peripheral wall 321 of the lower end 32 of the sealing member 3A always press the first sealing member 51 and deform outward synchronously with the open end 111 of the shell 11 (because due to the positioning effect of the guide groove 310, when the inner peripheral wall 321 of the lower end 32 of the sealing member 3A deforms excessively outward under the water pressure, the guide groove 310 will press against the inner peripheral wall 321 of the lower end 32 of the sealing member 3A). The inner wall 1112 of the open end 111 of the shell 11 prevents the inner circumferential wall 321 of the lower end 32 of the sealing member 3A from being excessively deformed outward), that is, when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3A to deform outward, the first sealing member 51 is always pressed by the inner circumferential wall 321 of the lower end 32 of the sealing member 3A to maintain the seal between the inner circumferential wall 321 of the lower end 32 of the sealing member 3A and the open end 111 of the shell 11.When the water pressure in the filter bottle 1 drops and causes the open end 111 of the shell 11 to deform inward, the open end 111 of the shell 11 presses inward against the guide groove 310, so that the guide groove 310 further pulls the inner circumferential wall 321 of the lower end 32 of the sealing member 3A to deform inward, so that the inner circumferential wall 321 of the lower end 32 of the sealing member 3A always presses the first sealing member 51 and deforms inward synchronously with the open end 111 of the shell 11.

[0079] As shown in the attached figure Figures 4A to 5B As shown, preferably, the filter bottle device of the present invention further includes a second sealing member 52, wherein the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. The second sealing member 52 provides a flexible connection between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. In particular, the housing 11 and the sealing member 3A are often made of plastic material, which easily deforms the product after injection molding. The flexible connection reduces the high production precision requirement for matching the inner diameter of the top end 1115 of the open end 111 with the outer diameter of the guide groove 310.

[0080] It is noteworthy that the second sealing member 52 further improves the seal between the lower end 32 of the sealing member 3A and the open end 111 of the housing 11 through at least two sealing functions. First, the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310, thereby strengthening the seal between the lower end 32 of the sealing member 3A and the open end 111 of the housing 11. Secondly, when the water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the lower end 32 of the sealing member 3A and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3A to deform outward. At this time, the lower end 32 of the sealing member 3A moves outward, driving the groove wall 3101 of the guide groove 310 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.Therefore, when the water pressure in the filter bottle 1 is low, the second sealing member 52 arranged between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 can achieve the sealing between the open end 111 of the shell 11 and the sealing member 3A; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure, and the first sealing member 51 tightly seals the gap between the inner circumferential wall 321 of the lower end 32 of the sealing member 3A and the outer wall 1111 of the open end 111 of the shell 11 under the clamping action of the inner circumferential wall 321 of the lower end 32 of the sealing member 3A and the open end 111 of the shell 11; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure. When water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the inner circumferential wall 321 of the lower end 32 of the sealing member 3A and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3A to deform outward, and the water pressure will compress the first sealing member 51 to deform, driving the lower end 32 of the sealing member 3A to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52. It can be understood that when the user or operator unscrews the filter bottle cap 2A, the restraining portion 42 of the restraining member 4 presses against the sealing member 3A. The restraining portion 42 of the restraining member 4 can compress and drive the sealing member 3A to move relative to the open end 111 of the shell 11 of the filter bottle 1 and move in the direction away from the extending portion 112 of the shell 11. The restraining portion 42 of the restraining member 4 (or the filter bottle cap 2A) and the sealing member 3A perform relative rotational motion. At this time, the torque of the friction force applied by the center seal 54 and the restraining portion 42 of the restraining member 4 to the sealing member 3A is less than the torque of the friction force applied by the first seal 51 and the second seal 52 to the sealing member 3A. Therefore, when the user or operator unscrews the filter bottle cap 2A, the sealing member 3A basically does not rotate, but only translates relative to the shell 11.

[0081] As shown in the attached figure Figures 4A to 5BAs shown, the filter bottle device of the present invention further includes a retaining bracket 53, which is fixed between the upper end 31 of the sealing member 3A and the filter element 12. The retaining bracket 53 is at least partially positioned opposite the guide groove 310 to maintain the second sealing member 52 at least partially within the guide groove 310. Preferably, the retaining bracket 53 is positioned below the upper end 31 of the sealing member 3A and is surrounded by the inner wall 1112 of the open end 111 of the housing 11. Preferably, the retaining bracket 53 can be fixed to the sealing member 3A by welding, or by other means such as screws. More preferably, the retaining bracket 53 is integrally formed with the sealing member 3A. Preferably, the retaining bracket 53 further has a notch 531, through which a user can remove the second sealing member 52 from the guide groove 310 using a simple tool such as a screwdriver. It can be understood that the first seal 51 is arranged on the outer wall 1111 of the open end 111 of the shell 11, and the second seal 52 is arranged on the guide groove 310 of the sealing member 3A, so that the first seal 51 and the second seal 52 are easy to install and replace.

[0082] It can be understood that as shown in the attached figure Figures 4A to 5BAs shown, when the filter bottle device has three openings, the filter bottle 1 further includes a first fluid channel 1121 and a second fluid channel 1122, the extension portion 112 of the shell 11 has a lower end portion 1120, and the first fluid channel 1121 and the second fluid channel 1122 of the filter bottle 1 are respectively arranged at the lower end portion 1120 of the filter bottle 1, wherein the first fluid channel 1121 is formed in a central area 11201 of the lower end portion 1120, and the second fluid channel 1122 is formed in an edge area 11202 extending outward from the central area 11201 of the lower end portion 1120. It can be understood that the filter element 12 can be a reverse osmosis membrane filter element or a three-port ultrafiltration membrane filter element. For example, when the filter element 12 is a reverse osmosis membrane filter element, the water cavity 120 is separated by the filter element 12 into a first water cavity 1201 and a second water cavity 1202, wherein the first water cavity 1201 is connected to the conduction channel 230A, and the second water cavity 1202 is connected to the second fluid channel 1122. The water inlet end of the filter element 12 is connected to the first water cavity 1201 (or the conduction channel 230A), the sewage discharge end of the filter element 12 is connected to the second water cavity 1202, and the purified water outlet of the filter element 12 is sealed. Connected to the first fluid channel 1121, taking the conducting channel 230A as the inflow channel of raw water, the first fluid channel 1121 as the outflow channel of purified water, and the second fluid channel 1122 as the outflow channel of sewage, for example, raw water flows in from the conducting channel 230A, passes through the first water cavity 1201, and flows into the water inlet end of the filter element 12. The purified water purified by the filter element 12 is discharged from the purified water outlet and finally flows out through the first fluid channel 1121. The sewage flows into the second water cavity 1202 through the sewage discharge end of the filter element 12 and is then discharged through the second fluid channel 1122. It can be understood that the conducting channel 230A (or the opening 21), the first fluid channel 1121 and the second fluid channel 1122 can form a threaded opening, or can form a quick-connect interface as needed. It can be understood that, as shown in the accompanying drawings Figure 4B As shown, when the filter bottle 1 is a two-port filter bottle (the filter bottle 1 no longer has the second fluid channel 1122), when the conducting channel 230A is connected to the water cavity 120, raw water can flow from the conducting channel 230A to the water cavity 120, and after being purified by the filter element 12, flow out from the clean water port of the filter element 12 and the first fluid channel 1121. It can be understood that when the conducting channel 230A is connected to the filter element 12 (or the opening of the filter element 12), raw water can flow from the first fluid channel 1121 to the water cavity 120 and flow to the filter element 12, and after being purified by the filter element 12, the purified water flows out from the conducting channel 230A.

[0083] Refer to the attached drawings of this utility model specification Figures 6A to 7F As shown, a filter bottle device according to a second embodiment of the present invention is illustrated, which includes a filter bottle 1, a filter element 12, a filter bottle cover 2B, a sealing member 3B and a first sealing member 51, wherein the filter bottle 1 includes a housing 11, the sealing member 3B includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the housing 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112. 2, the extension portion 112 extends from the connecting portion 113, wherein the housing 11 has a receiving cavity 110, and the receiving cavity 110 has a mounting opening 1101 formed at the open end 111 of the housing 11. The filter element 12 is disposed within the receiving cavity 110, wherein the filter bottle cover 2B is adapted to be detachably connected to the outer sidewall 1131 of the connecting portion 113 of the housing 11, and the upper end 31 of the sealing member 3B is located on the inner side of the filter bottle cover 2B. Preferably, the filter element 12 and the housing 11 form a water cavity 120 therebetween. Preferably, the high end 31 of the sealing member 3B is arranged between the filter bottle cover 2B and the filter element 12, the low end 32 of the sealing member 3B is arranged between the inner side wall 24 of the filter bottle cover 2B and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner peripheral wall 321 of the low end 32 of the sealing member 3B, wherein when the filter bottle cover 2B is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2B is pressed against the sealing member 3B, the filter bottle cover 2B can drive the sealing member 3B to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3B through the first sealing member 51. In other words, when the filter bottle cover 2B is fastened to the connection portion 113 of the shell 11, the filter bottle cover 2B can be pressed against the sealing member 3B to drive the sealing member 3B to move relative to the open end 111 of the shell 11 of the filter bottle 1 and to achieve sealing between the open end 111 of the shell 11 of the filter bottle 1 and the lower end 32 of the sealing member 3B through the first sealing member 51.

[0084] It is understood that the fastening connection between the filter bottle cover 2B and the filter bottle 1 of the filter bottle device of the present invention refers to an appropriate connection between the filter bottle cover 2B and the filter bottle 1 of the filter bottle device of the present invention through a certain connection method, so that the filter bottle cover 2B is firmly connected to the filter bottle 1, so that the filter bottle cover 2B can press and drive the sealing member 3B to move relative to the open end 111 of the shell 11 of the filter bottle 1 and press against the open end 111 of the shell 11. It is understood that the connection between the filter bottle cover 2B and the filter bottle 1 of the filter bottle device of the present invention can be achieved in a variety of ways, for example, by threaded connection, rotary snap connection or clamp connection, or other appropriate ways to achieve a detachable connection. Optionally, as Figures 6B to 7A As shown, the filter bottle cap 2B of the filter bottle device can be connected to the filter bottle 1 through a thread. Figures 7D to 7F As shown, the filter bottle cover 2B of the filter bottle device and the filter bottle 1 can also be connected by a rotating buckle.

[0085] The arrangement of the filter bottle 1, the filter bottle cover 2B, the sealing member 3B, and the first sealing member 51 of the filter bottle device of the present invention provides numerous advantages. First, when the filter bottle cover 2B is securely connected to the connection portion 113 of the housing 11 of the filter bottle 1, the filter bottle cover 2B rotates relative to the filter bottle 1 and moves toward the extension portion 112 of the housing 11 of the filter bottle 1, thereby compressing and driving the sealing member 3B to move relative to the open end 111 of the housing 11 of the filter bottle 1 and toward the extension portion 112 of the housing 11. During this process, due to the obstruction of the first sealing member 51 between the open end 111 of the housing 11 of the filter bottle 1 and the lower end 32 of the sealing member 3B, the frictional force of the filter bottle cover 2B on the sealing member 3B is less likely to drive the sealing member 3B to rotate synchronously. Therefore, the sealing member 3B basically does not rotate relative to the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, thereby basically eliminating the obstruction of the large-size sealing member to the relative rotation of the filter bottle cover 2B and the filter bottle 1, and can greatly reduce the difficulty of tightening the filter bottle cover 2B and the filter bottle 1. The arrangement of the filter bottle 1, the filter bottle cap 2B, the sealing member 3B, and the first sealing member 51 of the filter bottle device of the present invention allows an operator or user to tighten the filter bottle cap 2B without having to tighten it vigorously. Instead, the operator or user simply rotates the filter bottle cap 2B to a predetermined position to ensure that the inner peripheral wall 321 of the lower end 32 of the sealing member 3B presses the first sealing member 51 against the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1. This allows for relatively easy rotation between the filter bottle cap 2B and the filter bottle 1 (during tightening) without being substantially hindered by the large-sized sealing member. Accordingly, unscrewing (or removing) the filter bottle cap 2B from the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1 is also relatively easy. In other words, the present invention creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2B and the filter bottle 1 as independent and separate as possible, and utilizes the sealing member 3B to replace the filter bottle cap 2B to assume the "sealing" function, making it easier to tighten and unscrew the filter bottle cap 2B and the filter bottle 1. In addition, because the sealing member 3B can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to twist, which can reduce the risk of seal failure and water leakage. Secondly, when water pressure acts on the inner side of the filter bottle 1 of the filter bottle device of the present invention, the water pressure can be used to laterally (radially) support the bottle wall of the filter bottle 1 from the inside of the filter bottle 1 to obtain a more stable structure.At this time, due to the external action of the filter bottle cap 2B and the internal pressure of the water pressure within the filter bottle 1, the open end 111 of the filter bottle 1 can be made more round and expand outward to further compress the first sealing member 51, thereby improving the seal between the septum 3B and the filter bottle 1. Furthermore, the improved seal between the septum 3B and the filter bottle 1 also allows manufacturers or users to select a seal with less compression than traditional sealing methods, thereby allowing the seal to be used multiple times without having to replace it every time the filter element is replaced. The first sealing member 51 with less compression also reduces the obstruction during relative translation between the septum 3B and the filter bottle 1, which helps further reduce the difficulty of tightening and unscrewing the filter bottle cap 2B and the filter bottle 1. Finally, the arrangement of the filter bottle 1, the filter bottle cap 2B, the sealing member 3B, and the first sealing member 51 of the filter bottle device of the present invention further overcomes the drawback of the first sealing member 51 being arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3B. When the first sealing member 51 is arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3B, since the water pressure within the filter bottle 1 is from the inside out, when the inner wall of the filter bottle 1 is subjected to force, the housing 11 of the filter bottle 1 expands outward, potentially causing the first sealing member 51 arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3B to loosen, thereby destroying the seal between the inner wall of the open end 111 and the outer wall of the sealing member 3B.

[0086] As shown in the attached figure Figures 6A to 7FAs shown, the filter bottle cover 2B of the filter bottle device of the present invention includes an opening portion 21, a mounting portion 22 extending from the opening portion 21 and a conducting portion 23B extending from the opening portion 21, the high end 31 of the sealing member 3B forms a through opening 340B, wherein the conducting portion 23B and the opening portion 21 form a first conducting channel 2301B extending from the opening portion 21 to the conducting portion 23B and a second conducting channel 2302B extending from the opening portion 21 to the conducting portion 23B, wherein the conducting portion 23B passes through the through opening 340B of the high end 31 of the sealing member 3B, that is, the first conducting channel 2301B and the second conducting channel 2302B pass through the through opening 340B of the high end 31 of the sealing member 3B. It is understood that the first conducting channel 2301B is connected to the water cavity 120 (or the water inlet of the filter element 12), and the second conducting channel 2302B is connected to the filter element 12 (or the water outlet of the filter element 12); alternatively, the first conducting channel 2301B is connected to the filter element 12 (or the water outlet of the filter element 12), and the second conducting channel 2302B is connected to the water cavity 120 (or the water inlet of the filter element 12). Furthermore, the mounting portion 22 of the filter bottle cover 2B of the filter bottle device of the present invention is adapted to be fastened to the connecting portion 113 of the housing 11.

[0087] As shown in the attached figure Figures 6A to 7F As shown, preferably, a seal is formed between the guide portion 23B of the filter bottle cap 2B and the upper end 31 of the septum 3B in the filter bottle device of the present invention. The filter bottle device of the present invention further includes a central seal 54, which is disposed between the guide portion 23B of the filter bottle cap 2B and the through-opening 340B of the upper end 31 of the septum 3B to ensure a seal between the guide portion 23B of the filter bottle cap 2B and the upper end 31 of the septum 3B. It is worth noting that, because the central seal 54 is disposed between the guide portion 23B of the filter bottle cap 2B and the through-opening 340B of the upper end 31 of the septum 3B, the driving torque of the central seal 54 is less than the torque generated by the resistance of the first seal 51 (and the second seal 52). Therefore, the driving force of the central seal 54 is essentially unable to drive the septum 3B to rotate relative to the filter bottle 1.

[0088] As shown in the attached figure Figures 6A to 7FAs shown, the filter bottle device of the present invention further has a restraining member 4, which includes a fixing portion 41 and a restraining portion 42, wherein the restraining portion 42 and the fixing portion 41 of the restraining member 4 are respectively arranged on the high end 31 of the sealing member 3B and the conducting portion 23B of the filter bottle cover 2B, for restraining the sealing member 3B and preventing the sealing member 3B from detaching from the filter bottle cover 2B.

[0089] As shown in the attached figure Figures 6A to 7F As shown, the fixing portion 41 of the restraining member 4 of the filter bottle device of the present invention is connected to the conducting portion 23B, and the restraining portion 42 extends from the fixing portion 41 to the high end 31 of the sealing member 3B to restrain the sealing member 3B. Preferably, the restraining member 4 is provided with a communication channel 40, wherein the communication channel 40 is formed in the fixing portion 41 and communicates with the first conducting channel 2301B. Preferably, both the first conducting channel 2301B and the second conducting channel 2302B pass through the communication channel 40.

[0090] As shown in the attached figure Figures 6A to 7F As shown, preferably, the central seal 54 is constrained between the high end 31 of the sealing member 3B and the conducting portion 23B of the filter bottle cover 2B. Preferably, the fixing portion 41 of the constraining member 4 is fixed to the conducting portion 23B by screws. It is understood that the connection structure between the fixing portion 41 and the conducting portion 23B includes, but is not limited to, welding, screwing, threading, snap-fitting, or interference fit, and the two can even be connected using additional connecting members.

[0091] As shown in the attached figure Figures 6A to 7F As shown, the open end 111 of the housing 11 of the filter bottle device of the present invention includes a main body 1113 and a sealing portion 1114 extending outward from the main body 1113. The first sealing member 51 is disposed between the sealing portion 1114 of the open end 111 and the inner circumferential wall 321 of the lower end 32 of the septum 3B. Preferably, the lower end 32 is flared along its extension direction. This facilitates compression of the first sealing member 51 and movement relative to the open end 111 of the housing 11 when pressed and driven by the filter bottle cap 2B, thereby gradually achieving a seal between the sealing portion 1114 of the open end 111 and the lower end 32 of the septum 3B. Accordingly, when the filter bottle cap 2B is removed, the septum 3B is more easily removed from the sealing portion 1114 of the open end 111.

[0092] As shown in the attached figure Figures 6A to 7FAs shown, the upper end 31 of the sealing member 3B of the filter bottle device of the present invention forms a guide groove 310, wherein the guide groove 310 is located adjacent to the lower end 32 of the sealing member 3B and facing the open end 111 of the housing 11, wherein the top end 1115 of the open end 111 of the housing 11 is configured to be positioned within the guide groove 310 (the inner diameter of the top end 1115 of the open end 111 is slightly larger than the outer diameter of the guide groove 310). Accordingly, the guide groove 310 of the upper end 31 can guide the top end 1115 of the open end 111 of the housing 11 into the guide groove 310 and guide and assist the lower end 32 of the sealing member 3B to press against the outer wall 1111 of the open end 111 of the housing 11 when the filter bottle cap 2B presses and drives the sealing member 3B to move relative to the open end 111 of the housing 11 of the filter bottle 1. It can be understood that the guide groove 310, the open end 111 of the shell 11, the first seal 51 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3B cooperate with each other, so that the guide groove 310 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3B better wrap the first seal 51. It can be understood that when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner peripheral wall 321 of the lower end 32 of the sealing member 3B to deform outward, the guide groove 310 can make the inner peripheral wall 321 of the lower end 32 of the sealing member 3B always press the first sealing member 51 and deform outward synchronously with the open end 111 of the shell 11 (because due to the positioning effect of the guide groove 310, when the inner peripheral wall 321 of the lower end 32 of the sealing member 3B is excessively deformed outward under the water pressure, the guide groove 310 will press against the inner peripheral wall 321 of the lower end 32 of the sealing member 3B). The inner wall 1112 of the open end 111 of the shell 11 prevents the inner circumferential wall 321 of the lower end 32 of the sealing member 3B from being excessively deformed outward), that is, when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3B to deform outward, the first sealing member 51 is always pressed by the inner circumferential wall 321 of the lower end 32 of the sealing member 3B to maintain the seal between the inner circumferential wall 321 of the lower end 32 of the sealing member 3B and the open end 111 of the shell 11.When the water pressure in the filter bottle 1 drops and causes the open end 111 of the shell 11 to deform inward, the open end 111 of the shell 11 presses inward against the guide groove 310, so that the guide groove 310 further pulls the inner circumferential wall 321 of the lower end 32 of the sealing member 3B to deform inward, so that the inner circumferential wall 321 of the lower end 32 of the sealing member 3B always presses the first sealing member 51 and deforms inward synchronously with the open end 111 of the shell 11.

[0093] As shown in the attached figure Figures 6A to 7F As shown, preferably, the filter bottle device of the present invention further includes a second sealing member 52, wherein the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. The second sealing member 52 provides a flexible connection between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. In particular, the housing 11 and the sealing member 3B are often made of plastic material, which easily deforms the product after injection molding. The flexible connection reduces the high production precision requirement for matching the inner diameter of the top end 1115 of the open end 111 with the outer diameter of the guide groove 310.

[0094] It is noteworthy that the second sealing member 52 further improves the seal between the lower end 32 of the sealing member 3B and the open end 111 of the housing 11 through at least two sealing functions. First, the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310, thereby strengthening the seal between the lower end 32 of the sealing member 3B and the open end 111 of the housing 11. Secondly, when the water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the lower end 32 of the sealing member 3B and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3B to deform outward. At this time, the lower end 32 of the sealing member 3B moves outward, driving the groove wall 3101 of the guide groove 310 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.Therefore, when the water pressure in the filter bottle 1 is low, the second sealing member 52 arranged between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 can achieve sealing between the open end 111 of the shell 11 and the sealing member 3B; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure, and the first sealing member 51 tightly seals the gap between the inner circumferential wall 321 of the lower end 32 of the sealing member 3B and the outer wall 1111 of the open end 111 of the shell 11 under the clamping action of the inner circumferential wall 321 of the lower end 32 of the sealing member 3B and the open end 111 of the shell 11; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure. When water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the inner circumferential wall 321 of the lower end 32 of the sealing member 3B and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3B to deform outward, and the water pressure will compress the first sealing member 51 to deform, driving the lower end 32 of the sealing member 3B to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52. It can be understood that when the user or operator unscrews the filter bottle cap 2B, the restraining portion 42 of the restraining member 4 presses against the sealing member 3B. The restraining portion 42 of the restraining member 4 can compress and drive the sealing member 3B to move relative to the open end 111 of the shell 11 of the filter bottle 1 and move in the direction away from the extending portion 112 of the shell 11. The restraining portion 42 of the restraining member 4 (or the filter bottle cap 2B) and the sealing member 3B make relative rotational motion. At this time, the torque of the friction force applied to the sealing member 3B by the center seal 54 and the restraining portion 42 of the restraining member 4 is less than the torque of the friction force applied to the sealing member 3B by the first seal 51 and the second seal 52. Therefore, when the user or operator unscrews the filter bottle cap 2B, the sealing member 3B basically does not rotate, but only translates relative to the shell 11.

[0095] As shown in the attached figure Figures 6A to 7FAs shown, the filter bottle device of the present invention further includes a retaining bracket 53, which is fixed between the upper end 31 of the sealing member 3B and the filter element 12. The retaining bracket 53 is at least partially positioned opposite the guide groove 310 to maintain the second sealing member 52 at least partially within the guide groove 310. Preferably, the retaining bracket 53 is positioned below the upper end 31 of the sealing member 3B and is surrounded by the inner wall 1112 of the open end 111 of the housing 11. Preferably, the retaining bracket 53 can be fixed to the sealing member 3B by welding, or by other means such as screws. More preferably, the retaining bracket 53 is integrally formed with the sealing member 3A. Preferably, the retaining bracket 53 further has a notch 531, through which a user can remove the second sealing member 52 from the guide groove 310 using a simple tool such as a screwdriver. It can be understood that the first seal 51 is arranged on the outer wall 1111 of the open end 111 of the shell 11, and the second seal 52 is arranged on the guide groove 310 of the sealing member 3B, so that the first seal 51 and the second seal 52 are easy to install and replace.

[0096] Refer to the attached drawings of this utility model specification Figures 8A to 9BAs shown, a filter bottle device according to a third embodiment of the present invention is illustrated, which includes a filter bottle 1, a filter element 12, a filter bottle cover 2E, a sealing member 3E and a first sealing member 51, wherein the filter bottle 1 includes a housing 11, the sealing member 3E includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the housing 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112. 2, the extension portion 112 extends from the connecting portion 113, wherein the housing 11 has a receiving cavity 110, the receiving cavity 110 having a mounting opening 1101 formed at the open end 111 of the housing 11, and the filter element 12 is disposed within the receiving cavity 110, wherein the filter bottle cap 2E is adapted to be detachably connected to the outer sidewall 1131 of the connecting portion 113 of the housing 11, and the upper end 31 of the sealing member 3E is located on the inner side of the filter bottle cap 2E. Preferably, the filter element 12 and the housing 11 form a water cavity 120 therebetween. Preferably, the high end 31 of the sealing member 3E is arranged between the filter bottle cover 2E and the filter element 12, the low end 32 of the sealing member 3E is arranged between the inner side wall 24 of the filter bottle cover 2E and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner peripheral wall 321 of the low end 32 of the sealing member 3E, wherein when the filter bottle cover 2E is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2E is pressed against the sealing member 3E, the filter bottle cover 2E can drive the sealing member 3E to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3E through the first sealing member 51. In other words, when the filter bottle cover 2E is fastened to the connection portion 113 of the shell 11, the filter bottle cover 2E can be pressed against the sealing member 3E to drive the sealing member 3E to move relative to the open end 111 of the shell 11 of the filter bottle 1 and to achieve sealing between the open end 111 of the shell 11 of the filter bottle 1 and the lower end 32 of the sealing member 3E through the first sealing member 51.

[0097] It is understood that the fastened connection between the filter bottle cap 2E and the filter bottle 1 of the filter bottle device of the present invention refers to an appropriate connection between the filter bottle cap 2E and the filter bottle 1 of the filter bottle device of the present invention through a certain connection method, so that the filter bottle cap 2E is firmly connected to the filter bottle 1, thereby enabling the filter bottle cap 2E to compress and drive the sealing member 3E to move relative to the open end 111 of the housing 11 of the filter bottle 1 and press against the open end 111 of the housing 11. It is understood that the connection between the filter bottle cap 2E and the filter bottle 1 of the filter bottle device of the present invention can be achieved in various ways, for example, through a threaded connection, a rotating snap connection or a clamp connection, or other appropriate methods to achieve a detachable connection.

[0098] The arrangement of the filter bottle 1, the filter bottle cover 2E, the sealing member 3E, and the first sealing member 51 in the filter bottle device of the present invention provides numerous advantages. First, when the filter bottle cover 2E is securely connected to the connection portion 113 of the housing 11 of the filter bottle 1, the filter bottle cover 2E rotates relative to the filter bottle 1 and moves toward the extension portion 112 of the housing 11 of the filter bottle 1, thereby compressing and driving the sealing member 3E to move relative to the open end 111 of the housing 11 of the filter bottle 1 and toward the extension portion 112 of the housing 11. During this process, due to the obstruction of the first sealing member 51 between the open end 111 of the housing 11 of the filter bottle 1 and the lower end 32 of the sealing member 3E, the frictional force of the filter bottle cover 2E on the sealing member 3E prevents the sealing member 3E from rotating synchronously. Therefore, the sealing member 3E basically does not rotate relative to the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, thereby basically eliminating the obstruction of the large-size sealing member to the relative rotation of the filter bottle cover 2E and the filter bottle 1, and can greatly reduce the difficulty of tightening the filter bottle cover 2E and the filter bottle 1. The arrangement of the filter bottle 1, the filter bottle cap 2E, the sealing member 3E, and the first sealing member 51 of the filter bottle device of the present invention allows an operator or user to tighten the filter bottle cap 2E without having to tighten it vigorously. Instead, the operator or user simply rotates the filter bottle cap 2E to a predetermined position to ensure that the inner peripheral wall 321 of the lower end 32 of the sealing member 3E presses the first sealing member 51 against the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1. This allows for relatively easy rotation between the filter bottle cap 2E and the filter bottle 1 (during tightening) without being substantially hindered by the large-sized sealing member. Accordingly, unscrewing (or removing) the filter bottle cap 2E from the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1 is also relatively easy. In other words, the present invention creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2E and the filter bottle 1 as independent and separate as possible, using the sealing member 3E to replace the filter bottle cap 2E to assume the "sealing" function, making the filter bottle cap 2E and the filter bottle 1 easier to tighten and unscrew. In addition, because the sealing member 3E can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to twist, which can reduce the risk of seal failure and water leakage. Secondly, when water pressure acts on the inner side of the filter bottle 1 of the filter bottle device of the present invention, the water pressure can be used to provide transverse (radial) support to the bottle wall of the filter bottle 1 from the inside of the filter bottle 1, thereby obtaining a more stable structure.At this point, due to the external action of the filter bottle cap 2E and the internal pressure of the water pressure within the filter bottle 1, the open end 111 of the filter bottle 1 can be made more round and expand outward to further compress the first sealing member 51, thereby improving the seal between the septum 3E and the filter bottle 1. Furthermore, the improved seal between the septum 3E and the filter bottle 1 allows manufacturers or users to select a seal with less compression than traditional sealing methods, thereby enabling the seal to be reused multiple times without having to replace it every time the filter cartridge is replaced. The first sealing member 51 with less compression also reduces the obstruction during relative translation between the septum 3E and the filter bottle 1, further reducing the difficulty of tightening and unscrewing the filter bottle cap 2E and the filter bottle 1. Finally, the arrangement of the filter bottle 1, the filter bottle cap 2E, the sealing member 3E, and the first sealing member 51 of the filter bottle device of the present invention further overcomes the drawback of the first sealing member 51 being disposed between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3E. When the first sealing member 51 is disposed between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3E, since the water pressure within the filter bottle 1 is from the inside out, when the inner wall of the filter bottle 1 is subjected to force, the housing 11 of the filter bottle 1 expands outward, potentially causing the first sealing member 51 disposed between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3E to loosen, thereby destroying the seal between the inner wall of the open end 111 and the outer wall of the sealing member 3E.

[0099] As shown in the attached figure Figures 8A to 9BAs shown, the filter bottle cover 2E of the filter bottle device of the present invention includes an opening portion 21, a mounting portion 22 extending from the opening portion 21, a conducting portion 23E extending from the opening portion 21, a first channel forming portion 25E and a second channel forming portion 26E. The high end 31 of the sealing member 3E forms a through opening 340E, wherein the conducting portion 23E passes through the through opening 340E of the high end 31, wherein the first channel forming portion 25E is surrounded by the opening portion 21, and the second channel forming portion 26E is surrounded by the first channel forming portion 25E. The channel-forming portion 25E surrounds the first channel-forming portion 25E and the opening 21, forming a first channel 2101E therebetween. The first channel-forming portion 25E and the second channel-forming portion 26E form a second channel 2102E therebetween, and the second channel-forming portion 26E forms a third channel 2103E. The first channel 2101E, the second channel 2102E, and the third channel 2103E are separated from each other by the first channel-forming portion 25E and the second channel-forming portion 26E. Furthermore, the mounting portion 22 of the filter bottle cap 2E of the filter bottle device of the present invention is adapted to be fastened to the connecting portion 113 of the housing 11.

[0100] It can be understood that the filter element 12 can be a reverse osmosis membrane filter element or a three-port ultrafiltration membrane filter element, wherein the first channel 2101E is suitable for being connected to the water cavity 120 (or the water inlet 121 of the filter element 12), the second channel 2102E is suitable for being connected to the water outlet 122 of the filter element 12, and the third channel 2103E is suitable for being connected to the sewage outlet 123 of the filter element 12. Exemplarily, when the filter element 12 is a reverse osmosis membrane filter element, the water chamber 120 is separated by the filter element 12 into a first water chamber 1201 and a second water chamber 1202, wherein the first water chamber 1201 is connected to the first channel 2101E, the water inlet 121 of the filter element 12 is connected to the first water chamber 1201, the water outlet 122 of the filter element 12 is connected to the second channel 2102E, the second water chamber 1202 is respectively connected to the sewage discharge end 125 of the filter element 12 and the sewage discharge lower end 1241 of the central sewage discharge pipe 124 of the filter element 12, the sewage discharge upper end 1242 of the central sewage discharge pipe 124 of the filter element 12 forms the sewage discharge port 123 of the filter element 12, and the sewage discharge port 123 of the filter element 12 is connected to the third channel 2103E. Raw water flows in from the first channel 2101E, passes through the first water cavity 1201, and flows into the water inlet 121 of the filter element 12. The purified water purified by the filter element 12 flows out from the water outlet 122 of the filter element 12, and then flows out through the second channel 2102E. The sewage flows into the second water cavity 1202 through the sewage discharge end 125 of the filter element 12, and then flows through the sewage discharge lower end 1241 and the sewage discharge upper end 1242 of the central sewage pipe 124 (the sewage discharge port 123 of the filter element 12) before flowing into the third channel 2103E for discharge.

[0101] As shown in the attached figure Figures 8A to 9B As shown, preferably, a seal is formed between the guide portion 23E of the filter bottle cap 2E and the upper end 31 of the septum 3E in the filter bottle device of the present invention. The filter bottle device of the present invention further includes a central seal 54, which is disposed between the guide portion 23E of the filter bottle cap 2E and the through-opening 340E of the upper end 31 of the septum 3E to ensure a seal between the guide portion 23E of the filter bottle cap 2E and the upper end 31 of the septum 3E. It is worth noting that, because the central seal 54 is disposed between the guide portion 23E of the filter bottle cap 2E and the through-opening 340E of the upper end 31 of the septum 3E, the driving torque of the central seal 54 is less than the torque generated by the resistance of the first seal 51 (and the second seal 52). Therefore, the driving force of the central seal 54 is essentially unable to drive the septum 3E to rotate relative to the filter bottle 1.

[0102] As shown in the attached figure Figures 8A to 9B As shown, the filter bottle device of the present invention further has a restraining member 4, which includes a fixing portion 41 and a restraining portion 42, wherein the restraining portion 42 and the fixing portion 41 of the restraining member 4 are respectively arranged on the high end 31 of the sealing member 3E and the conducting portion 23E of the filter bottle cover 2E, for restraining the sealing member 3E and preventing the sealing member 3E from detaching from the filter bottle cover 2E.

[0103] As shown in the attached figure Figures 8A to 9B As shown, the fixing portion 41 of the restraining member 4 of the filter bottle device of the present invention is connected to the conducting portion 23E, and the restraining portion 42 extends from the fixing portion 41 to the high end 31 of the sealing member 3E to restrain the sealing member 3E. Preferably, the restraining member 4 is provided with a communication channel 40, wherein the communication channel 40 is formed in the fixing portion 41 and communicates with the first channel 2101E. Preferably, the first channel 2101E, the second channel 2102E, and the third channel 2103E all pass through the communication channel 40.

[0104] As shown in the attached figure Figures 8A to 9B As shown, the center seal 54 is preferably constrained between the high end 31 of the sealing member 3E and the conducting portion 23E of the filter bottle cover 2E. Preferably, the fixing portion 41 of the constraining member 4 is fixed to the conducting portion 23E by screws. It is understood that the connection structure between the fixing portion 41 and the conducting portion 23E includes, but is not limited to, welding, screwing, threading, snap-fitting, or interference fit, and the two can even be connected using additional connecting members.

[0105] As shown in the attached figure Figures 8A to 9B As shown, the open end 111 of the housing 11 of the filter bottle device of the present invention includes a main body 1113 and a sealing portion 1114 extending outward from the main body 1113. The first sealing member 51 is disposed between the sealing portion 1114 of the open end 111 and the inner circumferential wall 321 of the lower end 32 of the septum 3E. Preferably, the lower end 32 is flared along its extension direction. This facilitates compression of the first sealing member 51 and movement relative to the open end 111 of the housing 11 when pressed and driven by the filter bottle cap 2E, thereby gradually achieving a seal between the sealing portion 1114 of the open end 111 and the lower end 32 of the septum 3E. Accordingly, when the filter bottle cap 2E is removed, the septum 3E is more easily removed from the sealing portion 1114 of the open end 111.

[0106] As shown in the attached figure Figures 8A to 9BAs shown, the upper end 31 of the sealing member 3E of the filter bottle device of the present invention forms a guide groove 310, wherein the guide groove 310 is located adjacent to the lower end 32 of the sealing member 3E and facing the open end 111 of the housing 11, wherein the top end 1115 of the open end 111 of the housing 11 is configured to be positioned within the guide groove 310 (the inner diameter of the top end 1115 of the open end 111 is slightly larger than the outer diameter of the guide groove 310). Accordingly, the guide groove 310 of the upper end 31 can guide the top end 1115 of the open end 111 of the housing 11 into the guide groove 310 and guide and assist the lower end 32 of the sealing member 3E to press against the outer wall 1111 of the open end 111 of the housing 11 when the filter bottle cap 2E presses and drives the sealing member 3E to move relative to the open end 111 of the housing 11 of the filter bottle 1. It can be understood that the guide groove 310, the open end 111 of the shell 11, the first seal 51 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3E cooperate with each other, so that the guide groove 310 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3E better wrap the first seal 51. It can be understood that when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner peripheral wall 321 of the lower end 32 of the sealing member 3E to deform outward, the guide groove 310 can make the inner peripheral wall 321 of the lower end 32 of the sealing member 3E always press the first sealing member 51 and deform outward synchronously with the open end 111 of the shell 11 (because due to the positioning effect of the guide groove 310, when the inner peripheral wall 321 of the lower end 32 of the sealing member 3E is excessively deformed outward under the water pressure, the guide groove 310 will press against the inner peripheral wall 321 of the lower end 32 of the sealing member 3E). The inner wall 1112 of the open end 111 of the shell 11 prevents the inner circumferential wall 321 of the lower end 32 of the sealing member 3E from being excessively deformed outward), that is, when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3E to deform outward, the first sealing member 51 is always pressed by the inner circumferential wall 321 of the lower end 32 of the sealing member 3E to maintain the seal between the inner circumferential wall 321 of the lower end 32 of the sealing member 3E and the open end 111 of the shell 11.When the water pressure in the filter bottle 1 drops and causes the open end 111 of the shell 11 to deform inward, the open end 111 of the shell 11 presses inward against the guide groove 310, so that the guide groove 310 further pulls the inner circumferential wall 321 of the lower end 32 of the sealing member 3E to deform inward, so that the inner circumferential wall 321 of the lower end 32 of the sealing member 3E always presses the first sealing member 51 and deforms inward synchronously with the open end 111 of the shell 11.

[0107] As shown in the attached figure Figures 8A to 9B As shown, preferably, the filter bottle device of the present invention further includes a second sealing member 52, wherein the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. The second sealing member 52 provides a flexible connection between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. In particular, the housing 11 and the sealing member 3E are often made of plastic material, which easily deforms the product after injection molding. The flexible connection reduces the high production precision required to match the inner diameter of the top end 1115 of the open end 111 with the outer diameter of the guide groove 310.

[0108] It is noteworthy that the second sealing member 52 further improves the seal between the lower end 32 of the sealing member 3E and the open end 111 of the housing 11 through at least two sealing functions. First, the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310, thereby strengthening the seal between the lower end 32 of the sealing member 3E and the open end 111 of the housing 11. Secondly, when the water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the lower end 32 of the sealing member 3E and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3E to deform outward. At this time, the lower end 32 of the sealing member 3E moves outward, driving the groove wall 3101 of the guide groove 310 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.Therefore, when the water pressure in the filter bottle 1 is low, the second sealing member 52 provided between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 can achieve sealing between the open end 111 of the shell 11 and the sealing member 3E; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure, and the first sealing member 51 tightly seals the gap between the inner circumferential wall 321 of the lower end 32 of the sealing member 3E and the outer wall 1111 of the open end 111 of the shell 11 under the clamping action of the inner circumferential wall 321 of the lower end 32 of the sealing member 3E and the open end 111 of the shell 11; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure. When water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the inner circumferential wall 321 of the lower end 32 of the sealing member 3E and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3E to deform outward, and the water pressure will compress the first sealing member 51 to deform, driving the lower end 32 of the sealing member 3E to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52. It can be understood that when the user or operator unscrews the filter bottle cap 2E, the restraining portion 42 of the restraining member 4 presses against the sealing member 3E. The restraining portion 42 of the restraining member 4 can compress and drive the sealing member 3E to move relative to the open end 111 of the shell 11 of the filter bottle 1 and move in the direction away from the extending portion 112 of the shell 11. The restraining portion 42 of the restraining member 4 (or the filter bottle cap 2E) and the sealing member 3E make relative rotational motion. At this time, the torque of the friction force applied to the sealing member 3E by the center seal 54 and the restraining portion 42 of the restraining member 4 is less than the torque of the friction force applied to the sealing member 3E by the first seal 51 and the second seal 52. Therefore, when the user or operator unscrews the filter bottle cap 2E, the sealing member 3E basically does not rotate, but only translates relative to the shell 11.

[0109] As shown in the attached figure Figures 8A to 9BAs shown, the filter bottle device of the present invention further includes a retaining bracket 53, which is fixed between the upper end 31 of the sealing member 3E and the filter element 12. The retaining bracket 53 is at least partially positioned opposite the guide groove 310 to maintain the second sealing member 52 at least partially within the guide groove 310. Preferably, the retaining bracket 53 is positioned below the upper end 31 of the sealing member 3E and is surrounded by the inner wall 1112 of the open end 111 of the housing 11. Preferably, the retaining bracket 53 can be fixed to the sealing member 3E by welding, or by other means such as screws. More preferably, the retaining bracket 53 is integrally formed with the sealing member 3E. Preferably, the retaining bracket 53 further has a notch 531, through which a user can remove the second sealing member 52 from the guide groove 310 using a simple tool such as a screwdriver. It can be understood that the first seal 51 is arranged on the outer wall 1111 of the open end 111 of the shell 11, and the second seal 52 is arranged on the guide groove 310 of the sealing member 3E, so that the first seal 51 and the second seal 52 are easy to install and replace.

[0110] Refer to the attached drawings of this utility model specification Figures 10A to 11BAs shown, a filter bottle device according to a fourth embodiment of the present invention is illustrated, which includes a filter bottle 1, a filter element 12, a filter bottle cover 2C, a sealing member 3C and a first sealing member 51, wherein the filter bottle 1 includes a housing 11, the sealing member 3C includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the housing 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112. 2, the extension portion 112 extends from the connecting portion 113, wherein the housing 11 has a receiving cavity 110, and the receiving cavity 110 has a mounting opening 1101 formed at the open end 111 of the housing 11. The filter element 12 is disposed within the receiving cavity 110, wherein the filter bottle cap 2C is adapted to be detachably connected to the outer sidewall 1131 of the connecting portion 113 of the housing 11, and the upper end 31 of the sealing member 3C is located on the inner side of the filter bottle cap 2C. Preferably, the filter element 12 and the housing 11 form a water cavity 120 therebetween. Preferably, the high end 31 of the sealing member 3C is arranged between the filter bottle cover 2C and the filter element 12, the low end 32 of the sealing member 3C is arranged between the inner side wall 24 of the filter bottle cover 2C and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner peripheral wall 321 of the low end 32 of the sealing member 3C, wherein when the filter bottle cover 2C is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2C is pressed against the sealing member 3C, the filter bottle cover 2C can drive the sealing member 3C to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3C through the first sealing member 51. In other words, when the filter bottle cover 2C is fastened to the connection portion 113 of the shell 11, the filter bottle cover 2C can be pressed against the sealing member 3C to drive the sealing member 3C to move relative to the open end 111 of the shell 11 of the filter bottle 1 and to achieve sealing between the open end 111 of the shell 11 of the filter bottle 1 and the lower end 32 of the sealing member 3C through the first sealing member 51.

[0111] It is understood that the fastened connection between the filter bottle cap 2C and the filter bottle 1 of the filter bottle device of the present invention refers to an appropriate connection between the filter bottle cap 2C and the filter bottle 1 of the filter bottle device of the present invention through a certain connection method, so that the filter bottle cap 2C is firmly connected to the filter bottle 1, thereby enabling the filter bottle cap 2C to compress and drive the sealing member 3C to move relative to the open end 111 of the housing 11 of the filter bottle 1 and press against the open end 111 of the housing 11. It is understood that the connection between the filter bottle cap 2C and the filter bottle 1 of the filter bottle device of the present invention can be achieved in various ways, for example, through a threaded connection, a rotating snap connection or a clamp connection, or other appropriate methods to achieve a detachable connection.

[0112] The arrangement of the filter bottle 1, the filter bottle cover 2C, the sealing member 3C, and the first sealing member 51 in the filter bottle device of the present invention provides numerous advantages. First, when the filter bottle cover 2C is securely connected to the connection portion 113 of the housing 11 of the filter bottle 1, the filter bottle cover 2C rotates relative to the filter bottle 1 and moves toward the extension portion 112 of the housing 11 of the filter bottle 1, thereby compressing and driving the sealing member 3C relative to the open end 111 of the housing 11 of the filter bottle 1 and toward the extension portion 112 of the housing 11. During this process, due to the obstruction of the first sealing member 51 between the open end 111 of the housing 11 of the filter bottle 1 and the lower end 32 of the sealing member 3C, the frictional force of the filter bottle cover 2C on the sealing member 3C prevents the sealing member 3C from rotating synchronously. Therefore, the sealing member 3C basically does not rotate relative to the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, thereby basically eliminating the obstruction of the large-size sealing member to the relative rotation of the filter bottle cover 2C and the filter bottle 1, and can greatly reduce the difficulty of tightening the filter bottle cover 2C and the filter bottle 1. The arrangement of the filter bottle 1, the filter bottle cap 2C, the sealing member 3C, and the first sealing member 51 of the filter bottle device of the present invention allows an operator or user to tighten the filter bottle cap 2C without having to tighten it vigorously. Instead, the operator or user simply rotates the filter bottle cap 2C to a predetermined position to ensure that the inner peripheral wall 321 of the lower end 32 of the sealing member 3C presses the first sealing member 51 against the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1. This allows for relatively easy rotation between the filter bottle cap 2C and the filter bottle 1 (during tightening) without being substantially hindered by the large-sized sealing member. Accordingly, unscrewing (or removing) the filter bottle cap 2C from the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1 is also relatively easy. In other words, the present invention creatively proposes to make the "fixing" and "sealing" between the filter bottle cap 2C and the filter bottle 1 as independent and separate as possible, using the sealing member 3C to replace the filter bottle cap 2C to assume the "sealing" function, making the filter bottle cap 2C and the filter bottle 1 easier to tighten and unscrew. In addition, because the sealing member 3C can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to twist, which can reduce the risk of seal failure and water leakage. Secondly, when water pressure acts on the inner side of the filter bottle 1 of the filter bottle device of the present invention, the water pressure can be used to provide transverse (radial) support to the bottle wall of the filter bottle 1 from the inside of the filter bottle 1, thereby obtaining a more stable structure.At this time, due to the external action of the filter bottle cap 2C and the internal pressure of the water pressure within the filter bottle 1, the open end 111 of the filter bottle 1 can be made more round and expand outward to further compress the first sealing member 51, thereby improving the seal between the septum 3C and the filter bottle 1. Furthermore, the improved seal between the septum 3C and the filter bottle 1 also allows manufacturers or users to select a seal with less compression than traditional sealing methods, thereby allowing the seal to be used multiple times without having to replace it every time the filter element is replaced. The first sealing member 51 with less compression also reduces the obstruction during relative translation between the septum 3C and the filter bottle 1, which helps further reduce the difficulty of tightening and unscrewing the filter bottle cap 2C and the filter bottle 1. Finally, the arrangement of the filter bottle 1, the filter bottle cap 2C, the sealing member 3C, and the first sealing member 51 of the filter bottle device of the present invention further overcomes the drawback of the first sealing member 51 being arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3C. When the first sealing member 51 is arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3C, since the water pressure within the filter bottle 1 is from the inside out, when the inner wall of the filter bottle 1 is subjected to force, the housing 11 of the filter bottle 1 expands outward, potentially causing the first sealing member 51 arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3C to loosen, thereby destroying the seal between the inner wall of the open end 111 and the outer wall of the sealing member 3C.

[0113] As shown in the attached figure Figures 10A to 11B As shown, the filter bottle device further includes a limiting member 9, the filter bottle cover 2C includes an opening portion 21 and a mounting portion 22 extending from the opening portion 21, and the sealing member 3C further includes a positioning portion 33C and a limiting portion 34C, wherein the lower end 32 and the positioning portion 33C extend integrally from two opposite sides of the high end 31, respectively, and the limiting portion 34C extends outward from the positioning portion 33C, wherein the opening portion 21 forms a through opening 210, and the positioning portion 33C passes through the through opening 210 of the opening portion 21, and the limiting member 9 is suitable for being arranged between the limiting portion 34C and the opening portion 21 of the filter bottle cover 2C, so that the filter bottle cover 2C and the sealing member 3C cannot move relative to each other and can form relative rotation with less resistance. It can be understood that Figures 10A to 11BThe water inlet and outlet of the filter bottle device are both located at an end of the filter bottle device away from the filter bottle cover 2C. The filter bottle cover 2C does not have a water passage opening. The stopper 9 is, for example, a retaining spring, but may also be a nut or other position-limiting means, such as a nut fixed to the retaining portion 34C of the packing member 3C.

[0114] As shown in the attached figure Figures 10A to 11B As shown, the open end 111 of the housing 11 of the filter bottle device of the present invention includes a main body 1113 and a sealing portion 1114 extending outward from the main body 1113. The first sealing member 51 is disposed between the sealing portion 1114 of the open end 111 and the inner circumferential wall 321 of the lower end 32 of the septum 3C. Preferably, the lower end 32 is flared along its extension direction. This facilitates compression of the first sealing member 51 and movement relative to the open end 111 of the housing 11 when pressed and driven by the filter bottle cap 2C, thereby gradually achieving a seal between the sealing portion 1114 of the open end 111 and the lower end 32 of the septum 3C. Accordingly, when the filter bottle cap 2C is removed, the septum 3C is more easily removed from the sealing portion 1114 of the open end 111.

[0115] As shown in the attached figure Figures 10A to 11BAs shown, the upper end 31 of the sealing member 3C of the filter bottle device of the present invention forms a guide groove 310, wherein the guide groove 310 is located adjacent to the lower end 32 of the sealing member 3C and facing the open end 111 of the housing 11, wherein the top end 1115 of the open end 111 of the housing 11 is configured to be positioned within the guide groove 310 (the inner diameter of the top end 1115 of the open end 111 is slightly larger than the outer diameter of the guide groove 310). Accordingly, the guide groove 310 of the upper end 31 can guide the top end 1115 of the open end 111 of the housing 11 into the guide groove 310 and guide and assist the lower end 32 of the sealing member 3C to press against the outer wall 1111 of the open end 111 of the housing 11 when the filter bottle cap 2C presses and drives the sealing member 3C to move relative to the open end 111 of the housing 11 of the filter bottle 1. The guide groove 310, the open end 111 of the housing 11, the first sealing member 51, and the inner circumferential wall 321 of the lower end 32 of the sealing member 3C cooperate with each other, so that the guide groove 310 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3C better wrap the first sealing member 51. It can be understood that when the water pressure in the filter bottle 1 causes the open end 111 of the housing 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3C to deform outward, the guide groove 310 can ensure that the inner circumferential wall 321 of the lower end 32 of the sealing member 3C always presses against the first sealing member 51 and deforms outward synchronously with the open end 111 of the housing 11 (because due to the positioning function of the guide groove 310, when the inner circumferential wall 321 of the lower end 32 of the sealing member 3C deforms excessively outward under the water pressure, the guide groove 310 will press against the inner circumferential wall 321 of the lower end 32 of the sealing member 3C). The inner wall 1112 of the open end 111 of the shell 11 prevents the inner circumferential wall 321 of the lower end 32 of the sealing member 3C from being excessively deformed outward), that is, when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3C to deform outward, the first sealing member 51 is always pressed by the inner circumferential wall 321 of the lower end 32 of the sealing member 3C to maintain the seal between the inner circumferential wall 321 of the lower end 32 of the sealing member 3C and the open end 111 of the shell 11.When the water pressure in the filter bottle 1 drops and causes the open end 111 of the shell 11 to deform inward, the open end 111 of the shell 11 presses inward against the guide groove 310, so that the guide groove 310 further pulls the inner circumferential wall 321 of the lower end 32 of the sealing member 3C to deform inward, so that the inner circumferential wall 321 of the lower end 32 of the sealing member 3C always presses the first sealing member 51 and deforms inward synchronously with the open end 111 of the shell 11.

[0116] As shown in the attached figure Figures 10A to 11B As shown, preferably, the filter bottle device of the present invention further includes a second sealing member 52, wherein the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. The second sealing member 52 provides a flexible connection between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. In particular, the housing 11 and the sealing member 3C are often made of plastic material, which easily deforms the product after injection molding. The flexible connection reduces the high production precision requirement for matching the inner diameter of the top end 1115 of the open end 111 with the outer diameter of the guide groove 310.

[0117] It is noteworthy that the second sealing member 52 further improves the seal between the lower end 32 of the sealing member 3C and the open end 111 of the housing 11 through at least two sealing functions. First, the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310, thereby strengthening the seal between the lower end 32 of the sealing member 3C and the open end 111 of the housing 11. Secondly, when the water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the lower end 32 of the sealing member 3C and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3C to deform outward. At this time, the lower end 32 of the sealing member 3C moves outward, driving the groove wall 3101 of the guide groove 310 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.Therefore, when the water pressure in the filter bottle 1 is low, the second sealing member 52 provided between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 can achieve sealing between the open end 111 of the shell 11 and the sealing member 3C; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure, and the first sealing member 51 tightly seals the gap between the inner circumferential wall 321 of the lower end 32 of the sealing member 3C and the outer wall 1111 of the open end 111 of the shell 11 under the clamping action of the inner circumferential wall 321 of the lower end 32 of the sealing member 3C and the open end 111 of the shell 11; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure. When water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the inner circumferential wall 321 of the lower end 32 of the sealing member 3C and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3C to deform outward, and the water pressure will compress the first sealing member 51 to deform, driving the lower end 32 of the sealing member 3C to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52. It is understood that when a user or operator unscrews the filter bottle cap 2C, the torque of the friction force applied by the stopper 9 to the sealing member 3C is less than the torque of the friction force applied by the first sealing member 51 and the second sealing member 52 to the sealing member 3C. Therefore, when a user or operator unscrews the filter bottle cap 2C, the sealing member 3C substantially does not rotate but only translates relative to the housing 11, as shown in the accompanying drawings. Figures 10A to 11BAs shown, the filter bottle device of the present invention further includes a retaining bracket 53, which is fixed between the upper end 31 of the sealing member 3C and the filter element 12. The retaining bracket 53 is at least partially positioned opposite the guide groove 310 to maintain the second sealing member 52 at least partially within the guide groove 310. Preferably, the retaining bracket 53 is positioned below the upper end 31 of the sealing member 3C and is surrounded by the inner wall 1112 of the open end 111 of the housing 11. Preferably, the retaining bracket 53 can be fixed to the sealing member 3C by welding, or by other means such as screws. More preferably, the retaining bracket 53 is integrally formed with the sealing member 3C. Preferably, the retaining bracket 53 further has a notch 531, through which a user can remove the second sealing member 52 from the guide groove 310 using a simple tool such as a screwdriver. It can be understood that the first seal 51 is arranged on the outer wall 1111 of the open end 111 of the shell 11, and the second seal 52 is arranged on the guide groove 310 of the sealing member 3C, so that the first seal 51 and the second seal 52 are easy to install and replace.

[0118] Attached Figures 12A to 13BThe figure shows an optional implementation of the filter bottle device according to the fourth embodiment of the present invention, which includes a filter bottle 1, a filter element 12, a filter bottle cover 2D, a sealing member 3D and a first sealing member 51, wherein the filter bottle 1 includes a housing 11, the sealing member 3D includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the housing 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112. The extension 112 extends from the connecting portion 113, wherein the housing 11 has a receiving cavity 110, and the receiving cavity 110 has a mounting opening 1101 formed at the open end 111 of the housing 11. The filter element 12 is disposed within the receiving cavity 110, wherein the filter bottle cover 2D is adapted to be detachably connected to the outer sidewall 1131 of the connecting portion 113 of the housing 11, and the upper end 31 of the sealing member 3D is located on the inner side of the filter bottle cover 2D. Preferably, the filter element 12 and the housing 11 form a water cavity 120 therebetween. Preferably, the high end 31 of the sealing member 3D is arranged between the filter bottle cover 2D and the filter element 12, the low end 32 of the sealing member 3D is arranged between the inner side wall 24 of the filter bottle cover 2D and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner peripheral wall 321 of the low end 32 of the sealing member 3D, wherein when the filter bottle cover 2D is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2D is pressed against the sealing member 3D, the filter bottle cover 2D can drive the sealing member 3D to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3D through the first sealing member 51. In other words, when the filter bottle cover 2D is fastened to the connection portion 113 of the shell 11, the filter bottle cover 2D can be pressed against the sealing member 3D to drive the sealing member 3D to move relative to the open end 111 of the shell 11 of the filter bottle 1 and to achieve sealing between the open end 111 of the shell 11 of the filter bottle 1 and the lower end 32 of the sealing member 3D through the first sealing member 51.

[0119] It is understood that the fastened connection between the filter bottle cover 2D and the filter bottle 1 of the filter bottle device of the present invention refers to an appropriate connection between the filter bottle cover 2D and the filter bottle 1 of the filter bottle device of the present invention through a certain connection method, so that the filter bottle cover 2D is firmly connected to the filter bottle 1, thereby enabling the filter bottle cover 2D to compress and drive the sealing member 3D to move relative to the open end 111 of the housing 11 of the filter bottle 1 and press against the open end 111 of the housing 11. It is understood that the connection between the filter bottle cover 2D and the filter bottle 1 of the filter bottle device of the present invention can be achieved in various ways, for example, through a threaded connection, a rotating snap connection or a clamp connection, or other appropriate methods to achieve a detachable connection.

[0120] The arrangement of the filter bottle 1, the filter bottle cover 2D, the sealing member 3D, and the first sealing member 51 of the filter bottle device of the present invention provides numerous advantages. First, when the filter bottle cover 2D is securely connected to the connection portion 113 of the housing 11 of the filter bottle 1, the filter bottle cover 2D rotates relative to the filter bottle 1 and moves toward the extension portion 112 of the housing 11 of the filter bottle 1, thereby compressing and driving the sealing member 3D relative to the open end 111 of the housing 11 of the filter bottle 1 and toward the extension portion 112 of the housing 11. During this process, due to the obstruction of the first sealing member 51 between the open end 111 of the housing 11 of the filter bottle 1 and the lower end 32 of the sealing member 3D, the frictional force of the filter bottle cover 2D on the sealing member 3D is less likely to drive the sealing member 3D to rotate synchronously. Therefore, the sealing member 3D basically does not rotate relative to the open end 111 of the shell 11 of the filter bottle 1, and only translates relative to the outer wall 1111 of the open end 111 of the shell 11 of the filter bottle 1, thereby basically eliminating the obstruction of the large-size sealing member to the relative rotation of the filter bottle cover 2D and the filter bottle 1, and can greatly reduce the difficulty of tightening the filter bottle cover 2D and the filter bottle 1. The arrangement of the filter bottle 1, the filter bottle cap 2D, the sealing member 3D, and the first sealing member 51 of the filter bottle device of the present invention allows an operator or user to tighten the filter bottle cap 2D without having to tighten it vigorously. Instead, the operator or user simply rotates the filter bottle cap 2D to a predetermined position to ensure that the inner peripheral wall 321 of the lower end 32 of the sealing member 3D presses the first sealing member 51 against the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1. This allows for relatively easy rotation between the filter bottle cap 2D and the filter bottle 1 (during tightening) without being substantially hindered by the large-sized sealing member. Accordingly, unscrewing (or removing) the filter bottle cap 2D from the outer wall 1111 of the open end 111 of the housing 11 of the filter bottle 1 is also relatively easy. In other words, the present invention creatively proposes to make the "fixing" and "sealing" between the filter bottle cover 2D and the filter bottle 1 as independent and separate as possible, and utilizes the sealing member 3D to replace the filter bottle cover 2D to assume the "sealing" function, making it easier to tighten and unscrew the filter bottle cover 2D and the filter bottle 1. In addition, because the sealing member 3D can basically not rotate relative to the filter bottle 1, the first sealing member 51 is less likely to twist, which can reduce the risk of seal failure and water leakage. Secondly, when water pressure acts on the inner side of the filter bottle 1 of the filter bottle device of the present invention, the water pressure can be used to provide transverse (radial) support to the bottle wall of the filter bottle 1 from the inside of the filter bottle 1, thereby obtaining a more stable structure.At this time, due to the external action of the filter bottle cap 2D and the internal pressure of the water pressure within the filter bottle 1, the open end 111 of the filter bottle 1 can be made more round and expand outward to further compress the first sealing member 51, thereby improving the seal between the sealing member 3D and the filter bottle 1. Furthermore, the improved seal between the sealing member 3D and the filter bottle 1 also allows manufacturers or users to select a seal with less compression than traditional sealing methods, thereby allowing the seal to be used multiple times without having to replace it every time the filter element is replaced. The first sealing member 51 with less compression also reduces the obstruction during relative translation between the sealing member 3D and the filter bottle 1, which helps to further reduce the difficulty of tightening and unscrewing the filter bottle cap 2D and the filter bottle 1. Finally, the arrangement of the filter bottle 1, the filter bottle cover 2D, the sealing member 3D, and the first sealing member 51 of the filter bottle device of the present invention further overcomes the drawback of the first sealing member 51 being arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3D. When the first sealing member 51 is arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3D, since the water pressure within the filter bottle 1 is from the inside out, when the inner wall of the filter bottle 1 is subjected to force, the housing 11 of the filter bottle 1 expands outward, potentially causing the first sealing member 51 arranged between the inner wall of the open end 111 of the housing 11 and the outer wall of the sealing member 3D to loosen, thereby destroying the seal between the inner wall of the open end 111 and the outer wall of the sealing member 3D.

[0121] As shown in the attached figure Figures 12A to 13B As shown, the filter bottle device further includes a limiting member 9D, the filter bottle cover 2D includes a limiting portion 21D and a mounting portion 22 extending from the limiting portion 21D, and the sealing member 3D further has a positioning opening 33D, wherein the lower end 32 extends integrally from the high end 31, wherein the limiting portion 21D forms a limiting chamber 210D, and one end of the limiting member 9D is suitable for being set at the high end 31 of the sealing member 3D, and the other end of the limiting member 9D passes through the positioning opening 33D and is suitable for being fixedly set in the limiting chamber 210D, so that the filter bottle cover 2D and the sealing member 3D cannot move relative to each other and can form relative rotation with less resistance. Preferably, the limiting member 9D is a positioning screw, which is formed with a positioning column 91D that cooperates with the positioning opening 33D, a threaded portion 92D fixed to the limiting chamber 210D, and a central sealing member 93D located between the positioning opening 33D and the positioning column 91D. The central sealing member 93D can ensure sealing between the sealing member 3D and the positioning screw 9D. It is understood that Figures 12A to 13BThe water inlet and the water outlet of the filter bottle device are both arranged at one end of the filter bottle device away from the filter bottle cover 2D, and the filter bottle cover 2D does not have a water opening.

[0122] As shown in the attached figure Figures 12A to 13B As shown, the open end 111 of the housing 11 of the filter bottle device of the present invention includes a main body 1113 and a sealing portion 1114 extending outward from the main body 1113. The first sealing member 51 is disposed between the sealing portion 1114 of the open end 111 and the inner circumferential wall 321 of the lower end 32 of the septum 3D. Preferably, the lower end 32 is flared along its extension direction. This facilitates compression of the first sealing member 51 and movement relative to the open end 111 of the housing 11 when pressed and driven by the filter bottle cap 2D, thereby gradually achieving a seal between the sealing portion 1114 of the open end 111 and the lower end 32 of the septum 3D. Accordingly, when the filter bottle cap 2D is removed, the septum 3D is more easily removed from the sealing portion 1114 of the open end 111.

[0123] As shown in the attached figure Figures 12A to 13BAs shown, the upper end 31 of the sealing member 3D of the filter bottle device of the present invention forms a guide groove 310, wherein the guide groove 310 is located adjacent to the lower end 32 of the sealing member 3D and facing the open end 111 of the housing 11, wherein the top end 1115 of the open end 111 of the housing 11 is configured to be positioned within the guide groove 310 (the inner diameter of the top end 1115 of the open end 111 is slightly larger than the outer diameter of the guide groove 310). Accordingly, the guide groove 310 of the upper end 31 can guide the top end 1115 of the open end 111 of the housing 11 into the guide groove 310 and guide and assist the lower end 32 of the sealing member 3D to press against the outer wall 1111 of the open end 111 of the housing 11 when the filter bottle cap 2D presses and drives the sealing member 3D to move relative to the open end 111 of the housing 11 of the filter bottle 1. It can be understood that the guide groove 310, the open end 111 of the shell 11, the first seal 51 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3D cooperate with each other, so that the guide groove 310 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3D better wrap the first seal 51. It can be understood that when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner peripheral wall 321 of the lower end 32 of the sealing member 3D to deform outward, the guide groove 310 can make the inner peripheral wall 321 of the lower end 32 of the sealing member 3D always press the first sealing member 51 and deform outward synchronously with the open end 111 of the shell 11 (because due to the positioning effect of the guide groove 310, when the inner peripheral wall 321 of the lower end 32 of the sealing member 3D is excessively deformed outward under the water pressure, the guide groove 310 will press against the inner peripheral wall 321 of the lower end 32 of the sealing member 3D). The inner wall 1112 of the open end 111 of the shell 11 prevents the inner circumferential wall 321 of the lower end 32 of the sealing member 3D from being excessively deformed outward), that is, when the water pressure in the filter bottle 1 causes the open end 111 of the shell 11 and the inner circumferential wall 321 of the lower end 32 of the sealing member 3D to deform outward, the first sealing member 51 is always pressed by the inner circumferential wall 321 of the lower end 32 of the sealing member 3D to maintain the seal between the inner circumferential wall 321 of the lower end 32 of the sealing member 3D and the open end 111 of the shell 11.When the water pressure in the filter bottle 1 drops and causes the open end 111 of the shell 11 to deform inward, the open end 111 of the shell 11 presses inward against the guide groove 310, so that the guide groove 310 further pulls the inner circumferential wall 321 of the lower end 32 of the sealing member 3D to deform inward, so that the inner circumferential wall 321 of the lower end 32 of the sealing member 3D always presses the first sealing member 51 and deforms inward synchronously with the open end 111 of the shell 11.

[0124] As shown in the attached figure Figures 12A to 13B As shown, preferably, the filter bottle device of the present invention further includes a second sealing member 52, wherein the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. More preferably, the second sealing member 52 provides a flexible connection between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310. In particular, the housing 11 and the sealing member 3D are often made of plastic material, which easily deforms the product after injection molding. The flexible connection reduces the high production precision required to match the inner diameter of the top end 1115 of the open end 111 with the outer diameter of the guide groove 310.

[0125] It is noteworthy that the second sealing member 52 further improves the seal between the lower end 32 of the sealing member 3D and the open end 111 of the housing 11 through at least two sealing functions. First, the second sealing member 52 is disposed between the inner wall 1112 of the open end 111 of the housing 11 and the groove wall 3101 of the guide groove 310, thereby strengthening the seal between the lower end 32 of the sealing member 3D and the open end 111 of the housing 11. Secondly, when the water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the lower end 32 of the sealing member 3D and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3D to deform outward. At this time, the lower end 32 of the sealing member 3D moves outward, driving the groove wall 3101 of the guide groove 310 to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52.Therefore, when the water pressure in the filter bottle 1 is low, the second sealing member 52 provided between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 can achieve sealing between the open end 111 of the shell 11 and the sealing member 3D; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure, and the first sealing member 51 tightly seals the gap between the inner circumferential wall 321 of the lower end 32 of the sealing member 3D and the outer wall 1111 of the open end 111 of the shell 11 under the clamping action of the inner circumferential wall 321 of the lower end 32 of the sealing member 3D and the open end 111 of the shell 11; when the water pressure in the filter bottle 1 is high, the open end 111 of the shell 11 of the filter bottle 1 expands outward under the action of the water pressure. When water in the filter bottle 1 leaks from the second sealing member 52 between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 to between the inner circumferential wall 321 of the lower end 32 of the sealing member 3D and the outer wall 1111 of the open end 111 of the shell 11, the water pressure will compress and drive the lower end 32 of the sealing member 3D to deform outward, and the water pressure will compress the first sealing member 51 to deform, driving the lower end 32 of the sealing member 3D to move outward, driving the groove wall 3101 of the guide groove 310 to press against the second sealing member 52, thereby achieving self-sealing between the inner wall 1112 of the open end 111 of the shell 11 and the groove wall 3101 of the guide groove 310 through the second sealing member 52. It is understood that when a user or operator unscrews the filter bottle cap 2D, the torque of the friction force applied by the stopper 9D and the center seal 93D to the sealing member 3D is less than the torque of the friction force between the first seal 51 and the second seal 52. Therefore, when the user or operator unscrews the filter bottle cap 2D, the sealing member 3D substantially does not rotate, but only translates relative to the housing 11, as shown in the accompanying drawings. Figures 12A to 13BAs shown, the filter bottle device of the present invention further includes a retaining bracket 53, which is fixed between the upper end 31 of the packing member 3D and the filter element 12. The retaining bracket 53 is at least partially positioned opposite the guide groove 310 to maintain the second sealing member 52 at least partially within the guide groove 310. Preferably, the retaining bracket 53 is positioned below the upper end 31 of the packing member 3D and is surrounded by the inner wall 1112 of the open end 111 of the housing 11. Preferably, the retaining bracket 53 can be fixed to the packing member 3D by welding, or by other means such as screws. More preferably, the retaining bracket 53 is integrally formed with the packing member 3D. Preferably, the retaining bracket 53 further has a notch 531, through which a user can remove the second sealing member 52 from the guide groove 310 using a simple tool such as a screwdriver. It can be understood that the first seal 51 is arranged on the outer wall 1111 of the open end 111 of the shell 11, and the second seal 52 is arranged on the guide groove 310 of the sealing member 3D, so that the first seal 51 and the second seal 52 are easy to install and replace.

[0126] As shown in the attached figure Figures 2A to 3EAs shown, further, the utility model provides a filter bottle assembly, which includes a filter bottle 1, a filter bottle cover 2, a sealing member 3 and a first sealing member 51, wherein the filter bottle 1 includes a shell 11, the sealing member 3 includes a high end 31 and a low end 32 extending outward and downward from the high end 31, the shell 11 includes an open end 111, a connecting portion 113 and an extending portion 112, wherein the connecting portion 113 extends between the open end 111 and the extending portion 112, and the extending portion 112 extends from the connecting portion 113, wherein the shell 11 has a accommodating cavity 110, and the accommodating cavity 110 has an installation opening 1101 formed at the open end 111 of the shell 11, wherein the filter bottle cover 2 is suitable for being detachably connected to the outer side wall 1131 of the connecting portion 113 of the shell 11, and the high end 31 of the sealing member 3 is located on the inner side of the filter bottle cover 2. Preferably, the high end 31 of the sealing member 3 is arranged on the inner side of the filter bottle cover 2, the low end 32 of the sealing member 3 is arranged between the inner side wall 24 of the filter bottle cover 2 and the outer wall 1111 of the open end 111 of the shell 11, and the first sealing member 51 is arranged between the outer wall 1111 of the open end 111 of the shell 11 and the inner peripheral wall 321 of the low end 32 of the sealing member 3, wherein when the filter bottle cover 2 is connected to the connecting portion 113 of the shell 11 so that the filter bottle cover 2 is pressed against the sealing member 3, the filter bottle cover 2 can drive the sealing member 3 to move relative to the open end 111 of the shell 11 of the filter bottle 1 and realize the sealing between the open end 111 of the shell 11 of the filter bottle 1 and the low end 32 of the sealing member 3 through the first sealing member 51.

[0127] Unless otherwise specified, the seal mentioned in the specification of this new type of use is a water seal.

[0128] It is worth noting that the first, second and / or third in this article are only used to name different parts (or elements) of the present invention and to distinguish between different parts, elements and structures of the present invention, and they themselves do not have the meaning of order or number.

[0129] Those skilled in the art should understand that the embodiments described above and shown in the accompanying drawings are merely illustrative of the present invention and are not intended to limit the present invention. All equivalent implementations, modifications, and improvements within the spirit of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A filter bottle assembly, characterized in that: include: A filter bottle comprising a housing; filter bottle cap; a packing member including a high end and a low end extending outwardly and downwardly from the high end; and The filter bottle cap is adapted to be detachably connected to the outer side wall of the connecting portion of the housing, the upper end of the sealing member is located on the inner side of the filter bottle cap, the lower end of the sealing member is disposed between the inner side wall of the filter bottle cap and the outer wall of the open end of the housing, and the first sealing member is disposed between the outer wall of the open end of the housing and the inner peripheral wall of the lower end of the sealing member, wherein when the filter bottle cap is connected to the connecting portion of the housing so that the filter bottle cap is pressed against the sealing member, the filter bottle cap can drive the sealing member to move relative to the open end of the housing of the filter bottle.

2. The filter bottle assembly according to claim 1, characterized in that It further includes a metal ring, wherein the metal ring is provided on the outer peripheral wall of the lower end of the packing member.

3. The filter bottle assembly according to claim 1, wherein: The open end of the shell includes a main body and a sealing portion extending outward from the main body, wherein the first sealing member is disposed between the sealing portion of the open end and the inner peripheral wall of the lower end of the sealing member.

4. The filter bottle assembly according to claim 3, characterized in that The lower end is in a trumpet shape along its extending direction.

5. The filter bottle assembly according to claim 1, wherein: The high end of the packing member forms a guide groove, wherein the guide groove is arranged adjacent to the low end of the packing member and facing the open end of the shell, wherein the top end of the open end of the shell is arranged to be placed in the guide groove.

6. The filter bottle assembly according to claim 5, characterized in that A second sealing member is further included, wherein the second sealing member is disposed between an inner wall of the open end of the housing and a groove wall of the guide groove.

7. The filter bottle assembly according to claim 6, characterized in that The invention further comprises a retaining bracket, wherein the retaining bracket is at least partially disposed opposite to the guide groove to keep the second sealing member at least partially located in the guide groove.

8. The filter bottle assembly according to claim 7, wherein: The retaining bracket is disposed below the high end of the packing member and is surrounded by the inner wall of the open end of the shell.

9. The filter bottle assembly according to claim 8, wherein: The retaining bracket is fixed to the packing member.

10. The filter bottle assembly according to claim 9, wherein: The retaining bracket further has a notch.

11. The filter bottle assembly according to any one of claims 1 to 10, characterized in that: The filter bottle cover includes an opening portion and a mounting portion extending from the opening portion, and the sealing member further includes a conducting portion, wherein the lower end and the conducting portion extend integrally from two opposite sides of the high end, respectively, wherein the opening portion forms a through opening, and the conducting portion forms a conducting channel, wherein the conducting portion passes through the through opening of the opening portion.

12. The filter bottle assembly according to claim 11, wherein: The inner walls of the high end and the open end of the shell are arranged to form a conducting cavity; the filter bottle further includes a first fluid channel and a second fluid channel, the extended portion of the shell has a lower end portion, and the first fluid channel and the second fluid channel of the filter bottle are respectively arranged at the lower end portion of the filter bottle, wherein the first fluid channel is formed in the central area of the lower end portion, and the second fluid channel is formed in the edge area extending outward from the central area of the lower end portion.

13. The filter bottle assembly according to claim 11, wherein: It further includes a limiting member, and the sealing member further includes a limiting portion, wherein the limiting portion extends outward from the conducting portion, and the limiting member is suitable for being arranged between the limiting portion and the opening portion of the filter bottle cover.

14. The filter bottle assembly according to any one of claims 1 to 10, characterized in that: The filter bottle cover includes an opening portion, a mounting portion extending from the opening portion, and a conducting portion extending from the opening portion, the high end of the sealing member forms a through opening, wherein the conducting portion and the opening portion form a conducting channel extending from the opening portion to the conducting portion, wherein the conducting portion passes through the through opening at the high end.

15. The filter bottle assembly according to claim 14, wherein: It further includes a center seal, wherein the center seal is disposed between the guide portion of the filter bottle cover and the through opening of the high end of the sealing member.

16. The filter bottle assembly according to claim 15, wherein: There is further a restraining member, which includes a fixing portion and a restraining portion, wherein the restraining portion and the fixing portion of the restraining member are respectively arranged at the high end of the sealing member and the conducting portion of the filter bottle cover.

17. The filter bottle assembly according to claim 16, wherein: The fixing portion of the restraining member is connected to the conducting portion, and the restraining portion extends from the fixing portion to the high end of the sealing member.

18. The filter bottle assembly according to claim 17, wherein: The central seal is constrained between the high end of the sealing member and the conducting portion of the filter bottle cover; the filter bottle further includes a first fluid channel and a second fluid channel, the extension portion of the shell has a lower end portion, the first fluid channel and the second fluid channel of the filter bottle are respectively arranged at the lower end portion of the filter bottle, wherein the first fluid channel is formed in the central area of the lower end portion, and the second fluid channel is formed in the edge area extending outward from the central area of the lower end portion.

19. The filter bottle assembly according to any one of claims 1 to 10, characterized in that: The filter bottle cover includes an opening portion, a mounting portion extending from the opening portion, and a conducting portion extending from the opening portion, the high end of the sealing member forms a through opening, wherein the conducting portion and the opening portion form a first conducting channel extending from the opening portion to the conducting portion and a second conducting channel extending from the opening portion to the conducting portion, wherein the conducting portion passes through the through opening at the high end of the sealing member.

20. The filter bottle assembly according to claim 19, wherein It further includes a center seal, wherein the center seal is disposed between the guide portion of the filter bottle cover and the through opening of the high end of the sealing member.

21. The filter bottle assembly according to claim 20, wherein: There is further a restraining member, which includes a fixing portion and a restraining portion, wherein the restraining portion and the fixing portion of the restraining member are respectively arranged at the high end of the sealing member and the conducting portion of the filter bottle cover.

22. The filter bottle assembly according to claim 21, wherein The fixing portion of the restraint is connected to the conducting portion, and the restraint extends from the fixing portion to the high end of the sealing member. The center seal is restrained between the high end of the sealing member and the conducting portion of the filter bottle cover.

23. The filter bottle assembly according to claim 21, wherein The restraining member is provided with a communication channel, wherein the communication channel is formed at the fixing portion, and the communication channel is communicated with the first conducting channel.

24. The filter bottle assembly according to claim 22, wherein: The restraining member is provided with a communication channel, wherein the communication channel is formed at the fixing portion, and both the first conducting channel and the second conducting channel pass through the communication channel.

25. The filter bottle assembly according to any one of claims 1 to 10, characterized in that: The filter bottle cover includes 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 sealing member forms a through opening, wherein the conducting portion passes through the through opening of the high end, wherein the first channel forming portion is surrounded by the opening portion, the second channel forming portion is surrounded by the first channel forming portion, and the first channel forming portion and the opening portion form a first channel located therebetween, the first channel forming portion and the second channel forming portion form a second channel located 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.

26. The filter bottle assembly according to claim 25, wherein It further includes a center seal, wherein the center seal is disposed between the guide portion of the filter bottle cover and the through opening of the high end of the sealing member.

27. The filter bottle assembly according to claim 26, wherein There is further a restraining member, which includes a fixing portion and a restraining portion, wherein the restraining portion and the fixing portion of the restraining member are respectively arranged at the high end of the sealing member and the conducting portion of the filter bottle cover.

28. The filter bottle assembly according to claim 27, wherein: The fixing portion of the restraint is connected to the conducting portion, and the restraint extends from the fixing portion to the high end of the sealing member. The center seal is restrained between the high end of the sealing member and the conducting portion of the filter bottle cover.

29. The filter bottle assembly according to claim 27, wherein The restraining member is provided with a communication channel, wherein the communication channel is formed at the fixing portion, and the communication channel is communicated with the first channel.

30. The filter bottle assembly of claim 28, wherein: The restraining member is provided with a communication channel, wherein the communication channel is formed at the fixing portion, and the first channel, the second channel, and the third channel all pass through the communication channel.

31. The filter bottle assembly according to any one of claims 1 to 10, characterized in that: It further includes a limiting member, the filter bottle cover includes an opening portion and a mounting portion extending from the opening portion, the sealing member further includes a positioning portion and a limiting portion, wherein the lower end and the positioning portion extend integrally 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 passes through the through opening of the opening portion, wherein the limiting member is suitable for being arranged between the limiting portion and the opening portion of the filter bottle cover.

32. The filter bottle assembly according to claim 31, wherein The water inlet and the water outlet of the filter bottle assembly are both arranged at one end of the filter bottle assembly away from the filter bottle cover, and the filter bottle cover does not have a water opening.

33. The filter bottle assembly according to any one of claims 1 to 10, characterized in that: It further includes a limiting member, the filter bottle cover includes a limiting portion and a mounting portion extending from the limiting portion, the sealing member further has a positioning opening, wherein the lower end extends integrally from the high end, wherein the limiting portion forms a limiting chamber, and one end of the limiting member is suitable for being set at the high end of the sealing member, and the other end of the limiting member passes through the positioning opening and is suitable for being fixedly set in the limiting chamber.

34. The filter bottle assembly according to claim 33, wherein The limiting member is a positioning screw, which forms a positioning column matched with the positioning opening, a threaded portion fixed to the limiting chamber, and a central sealing member located between the positioning opening and the positioning column.

35. The filter bottle assembly according to claim 34, wherein: The water inlet and the water outlet of the filter bottle assembly are both arranged at one end of the filter bottle assembly away from the filter bottle cover, and the filter bottle cover does not have a water opening.

36. A filter bottle device, characterized in that: include: filter element; and The filter bottle assembly according to any one of claims 1 to 35, wherein the filter element is disposed in the accommodating cavity, and the high end of the sealing member is disposed between the filter bottle cover and the filter element.

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