Filter element device

Abstract

The invention discloses a filter element device, and belongs to the technical field of water purification equipment. A waterway adapter in the filter element device is in sliding connection with a waterway seat along a target direction, and the waterway adapter is used for being connected with a waterway plate in the water purification equipment. Thus, when the filter element needs to be detached and replaced, an operator rotates the handle part in one direction, and the water path adapter is driven by the transmission assembly to move in the target direction and the direction away from the water path plate in the rotating process of the handle part, so that the water path adapter is separated from the water path plate. When the filter element needs to be connected with a water path plate in the water purification equipment, an operator rotates the handle part in the opposite direction, and the water path adapter is driven by the transmission assembly to move in the target direction and the direction close to the water path plate in the rotating process of the handle part, so that installation, namely water path connection, of the water path adapter and the water path plate is achieved. Therefore, when the filter element device is disassembled from the water purification equipment by adopting the structure, only the handle piece needs to be rotated to be matched with the waterway adapter, the whole weight of the filter element does not need to be borne, and the disassembly is easy and labor-saving.

Description

Technical Field

[0001] This application relates to the technical field of water purification equipment, and particularly to a filter element device. Background Art

[0002] Generally, a water purification equipment includes a filter element and a machine body. The filter element is installed in the machine body and docked with a water circuit board, so that the filter element can normally perform the filtering function. The filtering ability of the filter element will decrease as the use time increases. Therefore, it generally needs to be replaced after being used for a period of time.

[0003] When installing the current filter element, first put the filter element into the filter cartridge, and then rotate the filter element clockwise to realize the connection between the bottom of the filter element and the water circuit board. When the filter element needs to be taken out, it is necessary to rotate the filter element counterclockwise to disassemble it from the water circuit board, and then take out the filter element from the filter cartridge.

[0004] However, after the filter element is filled with water, its weight increases, and the interaction force between the filter element and the water circuit board becomes larger, resulting in difficult rotation of the filter element. Summary of the Invention

[0005] An embodiment of this application provides a filter element device, which can solve the problem that the filter element in the prior art is difficult to rotate due to its large weight after being filled with water. The technical solution is as follows:

[0006] On the one hand, a filter element device is provided, which includes:

[0007] A filter bottle assembly, a water path adapter, a transmission assembly and a handle member;

[0008] One end of the filter bottle assembly has a water channel seat;

[0009] The water path adapter is located on the top of the water channel seat and has a water path hole extending in a target direction. The first end of the water path adapter is slidably connected to the water channel seat along the target direction, and the second end is used for detachably connecting to the water circuit board of the water purification equipment. The target direction is parallel to the radial direction of the filter bottle assembly;

[0010] The transmission assembly is distributed between the top of the water channel seat and the handle member, and is respectively connected to the water path adapter and the handle member; the handle member is rotatably connected to the filter bottle assembly;

[0011] Wherein, the handle member is configured to: during the process of rotating relative to the filter bottle assembly around the central axis of the filter bottle assembly, drive the water path adapter to move through the transmission assembly to drive the second end of the water path adapter to expand and contract.

[0012] Optionally, the transmission assembly includes a gear, a rack, and a carrier. The rotating shaft of the gear is fixedly connected to the handle member, and the rotating shaft of the gear is parallel to the central axis of the filter bottle assembly. The rack meshes with the gear, and one end of the rack is fixedly connected to the carrier, and the carrier is fixedly connected to the water path adapter.

[0013] Optionally, the carrier has an installation groove and an opening that communicates with the installation groove and faces it. The circumferential side surface of the water path adapter has a mounting plate, and the mounting plate is installed into the installation groove through the opening.

[0014] Wherein, during the movement of the carrier, the mounting plate can be driven to move synchronously.

[0015] Optionally, the carrier includes a first baffle, a second baffle, and a pin member. Both sides of the first baffle are fixedly connected to the second baffle and the end of the rack respectively. The first baffle has a plugging hole. The second baffle has a socket hole for socketing the water path adapter.

[0016] Wherein, a part of the pin member passes through the plugging hole and is oppositely arranged with the second baffle along the target direction and encloses the installation groove.

[0017] Optionally, the top of the water channel seat has a first guiding member extending along the target direction, and the carrier has a second guiding member cooperating with the first guiding member.

[0018] Wherein, the first guiding member and the second guiding member slide relatively along the target direction.

[0019] Optionally, the filter element device further includes an upper cover located between the water channel seat and the handle member. The upper cover is fixedly connected to the water channel seat. The side part of the upper cover has a first through hole, and the top of the upper cover has a second through hole. The handle member is rotatably connected to the upper cover.

[0020] Wherein, at least part of the water path adapter and the transmission assembly are both located in the area surrounded by the upper cover and the water channel seat, and the second end of the water path adapter can stretch through the first through hole. A part of the transmission assembly passes through the second through hole and is fixedly connected to the handle member.

[0021] Optionally, the side of the upper cover facing the handle member has two first limiting parts arranged circumferentially, and the side of the handle member facing the upper cover has a second limiting part.

[0022] When the handle member rotates relative to the upper cover to the first position, the second limiting portion is clamped with one of the first limiting portions; when the handle member rotates relative to the upper cover to the second position, the second limiting portion is clamped with the other first limiting portion.

[0023] Optionally, one of the first limiting portion and the second limiting portion is a limiting groove, and the other of the first limiting portion and the second limiting portion is a limiting convex portion.

[0024] Optionally, the filter element device further includes: a handle, which is rotatably connected to the side of the upper cover.

[0025] Optionally, the filter bottle assembly includes: a filter bottle and the water channel seat, and the water channel seat is installed at the opening of the filter bottle;

[0026] Wherein, the water channel seat has a mounting hole, and the water path adapter is inserted into the mounting hole and the water path hole communicates with the filter bottle.

[0027] The beneficial effects brought by the technical solution provided by the embodiment of the present application at least include:

[0028] By slidingly connecting the water path adapter in the filter element device and the water channel seat along the target direction, and the water path adapter is used to connect with the water path board in the water purification device. In this way, when it is necessary to disassemble and replace the filter element, the operator rotates the handle member in one direction, and during the rotation of the handle member, the water path adapter is driven by the transmission component to move along the target direction and away from the water path board to realize separation from the water path board. When it is necessary to connect the filter element to the water path board in the water purification device, the operator rotates the handle member in the opposite direction, and during the rotation of the handle member, the water path adapter is driven by the transmission component to move along the target direction and close to the water path board to realize the installation of the water path connection with the water path board. In this way, when disassembling and assembling the filter element device from the water purification device, only the cooperation of rotating the handle member and the water path adapter is required, and there is no need to bear the overall weight of the filter element, and the disassembly and assembly are easy and labor-saving. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 is a schematic structural diagram of a filter element device provided by an embodiment of the present application;

[0031] Figure 2 is Figure 1Exploded schematic diagram of a partial structure of the filter element device shown;

[0032] Figure 3 It is an exploded schematic diagram of a partial structure of another filter element device provided by an embodiment of the present application;

[0033] Figure 4 It is a partial structure cross-sectional view of a filter element device provided by an embodiment of the present application;

[0034] Figure 5 It is an exploded schematic diagram of a partial structure of yet another filter element device provided by an embodiment of the present application;

[0035] Figure 6 It is an exploded schematic diagram of a partial structure of still another filter element device provided by an embodiment of the present application;

[0036] Figure 7 It is an exploded schematic diagram of a handle member and an upper cover provided by an embodiment of the present application;

[0037] Figure 8 is Figure 7 The bottom view of the handle member in;

[0038] Figure 9 It is an exploded schematic diagram of another handle member and an upper cover provided by an embodiment of the present application.

[0039] Among them, the filter bottle assembly 100, the waterway adapter 200, the transmission assembly 300, the handle member 400, the waterway seat 101, the target direction f, the waterway hole k1, the waterway pipe 201, the filter bottle 102, the installation hole k, the gear 301, the rack 302, the carrier 303, the rotating shaft 301a, the handle member body 401, the handle cover 402, the cavity Q1, the connection hole k2, the recess 403, the clamping portion 404, the counterbore k4, the installation groove 303a, the opening 303b, the first baffle 3031, the second baffle 3032, the plug member 3033, the insertion hole k5, the socket hole k6, the comb teeth C, the first guide member 101a, the second guide member 303b, the upper cover 500, the first through hole k7, the second through hole k8, the first limiting portion 502, the second limiting portion D, the avoidance groove 503, the handle 600.

[0040] Through the above-mentioned drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0041] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the drawings.

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0043] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0044] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of a filter element device provided by an embodiment of the present application. Figure 2 is Figure 1 a partial structural explosion diagram of the filter element device shown. The filter element device 000 may include: a filter bottle assembly 100, a waterway adapter 200, a transmission assembly 300, and a handle member 400.

[0045] One end of the filter bottle assembly 100 in the filter element device 000 may have a waterway seat 101.

[0046] The waterway adapter 200 in the filter element device 000 may be located on top of the waterway seat 101 and may have a waterway hole k1 extending in the target direction f. The first end of the waterway adapter 200 may be slidably connected to the waterway seat 101 along the target direction f. The second end of the waterway adapter 200 may be used for detachably connecting to a waterway board (not shown in the figure) of a water purification device. The target direction f may be parallel to the radial direction of the filter bottle assembly 100. By way of example, the waterway adapter 200 includes a plurality of waterway tubes 201 arranged side by side. Each waterway tube 201 may have a waterway hole k1, and the waterway hole k1 may communicate with the filter bottle assembly 100.

[0047] The transmission assembly 300 in the filter element device 000 may be distributed between the top of the waterway seat 101 and the handle member 400, and is respectively connected to the waterway adapter 200 and the handle member 400. The handle member 400 may be rotatably connected to the filter bottle assembly 100.

[0048] Among them, the handle member 400 can be configured to drive the waterway adapter 200 to move through the transmission assembly 300 during the rotation of the handle member 400 relative to the filter bottle assembly 100 about the central axis L of the filter bottle assembly 100, so as to drive the second end portion of the waterway adapter 200 to expand and contract along the target direction f.

[0049] In the embodiment of the present application, the waterway adapter 200 in the filter element device 000 is slidably connected to the waterway seat 101 along the target direction f, and the waterway adapter 200 is used to connect to the waterway board in the water purification device. In this way, when it is necessary to disassemble and replace the filter element device, the operator rotates the handle member 400 in one direction. During the rotation of the handle member 400, the waterway adapter 200 is driven by the transmission assembly 300 to move along the target direction f and away from the waterway board, so as to realize the separation from the waterway board. When it is necessary to connect the filter element device 000 to the waterway board in the water purification device, the operator rotates the handle member 400 in the reverse direction. During the rotation of the handle member 400, the waterway adapter 200 is driven by the transmission assembly 300 to move along the target direction f and close to the waterway board, so as to realize the installation of the waterway connection with the waterway board. In this way, when disassembling and assembling the filter element device 000 from the water purification device using the above structure, only the cooperation of rotating the handle member 400 and the waterway adapter 200 is required, and there is no need to bear the overall weight of the filter element, and the disassembly and assembly are easy and labor-saving.

[0050] To sum up, the embodiment of the present application provides a filter element device, which may include: a filter bottle assembly, a waterway adapter, a transmission assembly, and a handle member. The waterway adapter in the filter element device is slidably connected to the waterway seat along the target direction, and the waterway adapter is used to connect to the waterway board in the water purification device. In this way, when it is necessary to disassemble and replace the filter element, the operator rotates the handle member in one direction. During the rotation of the handle member, the waterway adapter is driven by the transmission assembly to move along the target direction and away from the waterway board, so as to realize the separation from the waterway board. When it is necessary to connect the filter element to the waterway board in the water purification device, the operator rotates the handle member in the reverse direction. During the rotation of the handle member, the waterway adapter is driven by the transmission assembly to move along the target direction and close to the waterway board, so as to realize the installation of the waterway connection with the waterway board. In this way, when disassembling and assembling the filter element device from the water purification device using the above structure, only the cooperation of rotating the handle member and the waterway adapter is required, and there is no need to bear the overall weight of the filter element, and the disassembly and assembly are easy and labor-saving.

[0051] For example, please refer to Figure 3 , Figure 3 which is a partial structural explosion diagram of another filter element device provided by the embodiment of the present application. The filter bottle assembly 100 may include: a filter bottle 102 and a waterway seat 101, and the waterway seat 101 may be installed at the opening of the filter bottle 102. Among them, the waterway seat 101 may have a mounting hole k communicating with the filter bottle 101, and the waterway adapter 200 may be inserted into the mounting hole k and the waterway hole k1 may communicate with the filter bottle 102.

[0052] Optionally, as Figure 3 shown, the transmission assembly 300 in the filter element device 000 may include: a gear 301, a rack 302, and a carrier 303. The rotating shaft 301a of the gear 301 may be fixedly connected to the handle member 400, and the rotating shaft 301a of the gear 301 may be parallel to the central axis L of the filter bottle assembly 100. The rack 302 may be meshed with the gear 301, and one end of the rack 302 may be fixedly connected to the carrier 303, and the carrier 303 may be fixedly connected to the water path adapter 200. In this case, a gear-rack transmission mechanism with a relatively simple structure is used. By rotating the filter element handle member 400 to drive the gear 301 to rotate forward and backward, the rack 302 and the carrier 303 can drive the water path adapter 200 to move back and forth, realizing the water path connection and disconnection between the filter element device 000 and the water path board in the water purification device. It should be noted that the rack 302 and the carrier 303 may be an integral structure.

[0053] For example, please refer to Figure 4 , Figure 4 is a partial structural cross-sectional view of a filter element device provided by an embodiment of the present application. In an implementable manner, the handle member 400 may include: a handle member body 401 and a handle cover 402. A part of the handle member body 401 is convex and may have a cavity Q1, and a connection hole k2 communicating with the cavity Q1 is provided at the bottom. The handle cover 402 may be used to cover the cavity Q1. Wherein, the end portion of the rotating shaft 301a of the gear 301 may extend into the cavity Q1 through the connection hole k2 and be fixedly connected to the handle member body 401. In this way, an operator can pinch the handle member body 401 to rotate the handle member 400. For example, the end portion of the rotating shaft 301a of the gear 301 may be fixedly connected to the inner bottom wall of the cavity Q1 of the handle member body 401 through a first screw A.

[0054] For example, please refer to Figure 5 , Figure 5 is a partial structural explosion schematic diagram of another filter element device provided by an embodiment of the present application. In another implementable manner, the top of the handle member 400 has a recess 403 and a clamping portion 404 fixed in the recess 403. The handle member 400 may further have a first connection hole k3 penetrating through the clamping portion 404. Wherein, the end portion of the rotating shaft 301a of the gear 301 may extend into the first connection hole k3 and be fixedly connected to the handle member 400. For example, the end portion of the rotating shaft 301a of the gear 301 may be fixedly connected to the edge portion of the top of the clamping portion 404 in the first connection hole k3 through a second screw B.

[0055] It should be noted that, in order to ensure the appearance of the handle member 400, the clamping portion 404 may have a counterbore k4 communicating with the first connection hole k3. The inner diameter of the counterbore k4 is greater than the inner diameter of the first connection hole k3. One end of the second screw B can sequentially pass through the counterbore k4 and the first connection hole k3 and be fixedly connected to the rotating shaft 301a of the gear 301. Wherein, the other end of the second screw B may be located within the counterbore k4.

[0056] In the embodiment of the present application, as Figure 3 shown, the carrier member 303 in the transmission assembly 300 may have an installation groove 303a and an opening 303b communicating with the installation groove 303a. The circumferential side surface of the water path adapter 200 may have a mounting plate 202, and the mounting plate 202 may be installed into the installation groove 303a of the carrier member 303 through the opening 303b. Wherein, during the movement of the carrier member 303, it can drive the mounting plate 202 to move synchronously. In this case, by providing the installation groove 303a in the carrier member 303 of the transmission assembly 300, after the mounting plate 202 on the circumferential side surface of the water path adapter 200 is installed in the installation groove 303a through the opening 303b, the gear rack can drive the carrier member 303 to move and drive the water path adapter 200 to move. In this way, it is ensured that the assembly of the transmission assembly 300 and the water path adapter 200 is convenient, and the disassembly and assembly efficiency of the filter element device 000 is improved.

[0057] In the present application, please refer to Figure 3 and Figure 6 , Figure 6 is a partial structural explosion diagram of another filter element device provided by the embodiment of the present application. The carrier member 303 may include: a first baffle 3031, a second baffle 3032, and a plug member 3033. Both sides of the first baffle 3031 may be fixedly connected to the second baffle 3032 and the end of the rack 302 respectively. The first baffle 3031 has a plug hole k5, and the second baffle 3032 has a socket hole k6 for socketing the water path adapter 200. Wherein, a part of the plug member 3033 can pass through the plug hole k5 and be oppositely arranged with the second baffle 3032 along the target direction f and enclose the installation groove 303a. For example, during the assembly of the transmission assembly 300 and the water path adapter 200, the second baffle 3032 is socketed on the water path adapter 200 through the socket hole k6 and the second baffle 3032 can be in contact with one side of the mounting plate 202; a part of the plug member 3033 is inserted into the other side of the mounting plate 202 through the plug hole k5 on the first baffle 3031 and is in contact with the mounting plate 202. In this way, the assembly and limit of the carrier member 303 and the water path adapter 200 are conveniently realized, and the user can repair and disassemble by himself, improving the convenience of use.

[0058] It should be noted that in the case where the waterway adapter 200 includes a plurality of waterway pipes 201, the mounting plate 202 is used to connect the plurality of waterway pipes 201, and the second baffle 3032 has socket holes k6 that are sleeved with the plurality of waterway pipes 201 one by one. For example, the first baffle 3031 may have a plurality of insertion holes k5 distributed in an array, and the plug member 3033 may have a plurality of comb teeth C corresponding to the plurality of insertion holes k5 one by one. The plurality of comb teeth C are disposed opposite to the second baffle 3032 along the target direction f, and the mounting plate 202 is inserted between the second baffle 3032 and the plurality of comb teeth C. Among them, a waterway pipe 201 is distributed between every two adjacent comb teeth C.

[0059] Optionally, as Figure 6 shown, the top of the waterway seat 101 may have a first guiding member 101a extending along the target direction f, and the carrier 303 may have a second guiding member 303b that cooperates with the first guiding member 101a. Among them, the first guiding member 101a and the second guiding member 303b slide relative to each other along the target direction f. In this case, through the guiding and limiting of the first guiding member 101a and the second guiding member 303b, the stability and movement accuracy of the carrier 303 during movement are improved, and the disassembly and assembly efficiency of the filter element device 000 is further improved.

[0060] For example, the first guiding member 101a at the top of the waterway seat 101 may be a first strip-shaped guiding groove, and the second guiding member 303b in the carrier 303 may be a first guiding protrusion that slidably cooperates with the first strip-shaped guiding groove. Or, the first guiding member 101a at the top of the waterway seat 101 may be a second guiding protrusion, and the second guiding member 303b in the carrier 303 may be a second strip-shaped guiding groove that slidably cooperates with the second guiding protrusion.

[0061] In the embodiments of the present application, as Figure 3 and Figure 4 shown, the filter element device 000 may further include: an upper cover 500 located between the waterway seat 101 and the handle member 400. The upper cover 500 may be fixedly connected to the waterway seat 101. The side portion of the upper cover 500 may have a first through hole k7, and the top of the upper cover 500 may have a second through hole k8. The handle member 400 may be rotatably connected to the upper cover 500. Among them, at least part of the waterway adapter 200 and the transmission assembly 300 may be located in the area surrounded by the upper cover 500 and the waterway seat 101, and the second end of the waterway adapter 200 can extend through the first through hole k7 in the upper cover 500, and part of the transmission assembly 300 can pass through the second through hole k8 in the upper cover 500 and be fixedly connected to the handle member 400. In this case, through the connection between the upper cover 500 and the waterway seat 101, at least part of the waterway adapter 200 and the transmission assembly 300 can be well protected.

[0062] Exemplarily, in an implementable manner, as Figure 3 shown, the handle member 400 is installed on the top of the upper cover 500 and can cover the top of the upper cover 500.

[0063] In another implementable manner, as Figure 5 shown, the top edge of the upper cover 500 has a partially annular shielding protrusion 501, and the handle member 400 can be located within the area surrounded by the annular shielding protrusion 501. In this way, by using the concave handle member, the overall height of the filter element device is reduced, saving space.

[0064] Optionally, please refer to Figure 7 , Figure 8 and Figure 9 , Figure 7 which is an exploded schematic view of a handle member and an upper cover provided by an embodiment of the present application, Figure 8 is Figure 7 the bottom view of the handle member in Figure 9 which is another exploded schematic view of a handle member and an upper cover provided by an embodiment of the present application. One side of the upper cover 500 facing the handle member 400 may have two first limiting portions 502 arranged along the circumferential direction of the upper cover 500, and one side of the handle member 400 facing the upper cover 500 may have a second limiting portion D. Among them, when the handle member 400 rotates relative to the upper cover 500 to the first position, the second limiting portion D in the handle member 400 is engaged with one of the first limiting portions 502 in the upper cover 500; when the handle member 400 rotates relative to the upper cover 500 to the second position, the second limiting portion D in the handle member 400 is engaged with the other first limiting portion 502 in the upper cover 500. In this case, through the cooperation of the two limiting portions, a stable connection between the handle member 400 and the upper cover 500 can be achieved, and the rotation angle of the handle member 400 relative to the upper cover 500 can be limited, improving the convenience of operation. It should be noted that in actual design requirements, the arrangement angle between the two first limiting portions can be set according to the moving stroke of the rack after the gear-rack cooperation, and the embodiments of the present application do not make specific limitations on this.

[0065] In the present application, one of the first limiting portion 502 in the upper cover 500 and the second limiting portion D in the handle member 400 may be a limiting groove, and the other of the first limiting portion 502 in the upper cover 500 and the second limiting portion D in the handle member 400 may be a limiting protrusion. Here, the extending directions of the limiting groove and the limiting protrusion are both parallel to the rotation axis 301a of the gear 301. It should be noted that for the convenience of the cooperation and separation of the limiting protrusion and the limiting groove, the edge regions of the limiting protrusion and the limiting groove can both be arc surface fits.

[0066] In an embodiment of the present application, as Figure 5As shown, the filter element device 000 may further include: a handle 600, which may be rotatably connected to the side of the upper cover 500. In this way, using the handle 600 facilitates the handling of the filter element device 000.

[0067] Exemplarily, as Figure 5 shown, when the top edge of the upper cover 500 has a partially annular shielding protrusion 501, the top of the upper cover 500 may have an avoidance groove 503 that fits the shape of the handle 600, and the avoidance groove 503 may be disposed opposite to the annular shielding protrusion 501. Among them, after the handle 600 is folded, it can be located in the avoidance groove 503, which plays a good role in modifying the appearance of the filter element device 000.

[0068] In this application, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plural" means two or more, unless otherwise clearly defined.

[0069] The above are only optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A filter element device, characterized in that, Comprising: A filter bottle assembly, a waterway adapter, a transmission assembly, and a handle member; One end of the filter bottle assembly has a waterway seat; The waterway adapter is located at the top of the waterway seat and has a waterway hole extending in a target direction. The first end of the waterway adapter is slidably connected to the waterway seat in the target direction, and the second end is used for detachably connecting to the waterway board of the water purification device. The target direction is parallel to the radial direction of the filter bottle assembly; The transmission assembly is distributed between the top of the waterway seat and the handle member and is respectively connected to the waterway adapter and the handle member; The handle member is rotatably connected to the filter bottle assembly; Wherein, the handle member is configured to: during the process of rotating relative to the filter bottle assembly around the central axis of the filter bottle assembly, drive the waterway adapter to move through the transmission assembly to drive the second end of the waterway adapter to expand and contract.

2. The filter element device according to claim 1, characterized in that The transmission assembly includes: a gear, a rack, and a carrier. The rotating shaft of the gear is fixedly connected to the handle member, and the rotating shaft of the gear is parallel to the central axis of the filter bottle assembly; The rack is engaged with the gear, and one end of the rack is fixedly connected to the carrier, and the carrier is fixedly connected to the waterway adapter.

3. The filter element device according to claim 2, wherein The carrier has an installation groove and an opening communicating with the installation groove and facing; The circumferential side surface of the waterway adapter has an installation plate, and the installation plate is installed into the installation groove through the opening; Wherein, during the movement of the carrier, it can drive the installation plate to move synchronously.

4. The filter element device according to claim 3, characterized in that, The carrier includes: a first baffle, a second baffle, and a plug member. Two sides of the first baffle are respectively fixedly connected to the second baffle and the end of the rack. The first baffle has a plug hole; The second baffle has a socket hole for socketing the waterway adapter; Wherein, a part of the plug member passes through the plug hole and is oppositely arranged with the second baffle in the target direction to enclose the installation groove.

5. The filter element device according to claim 2, characterized in that, The top of the waterway seat has a first guiding member extending in the target direction, and the carrier has a second guiding member cooperating with the first guiding member; Wherein, the first guiding member and the second guiding member slide relatively in the target direction.

6. The filter element device according to any one of claims 1-5, characterized in that The filter element device further includes: an upper cover located between the waterway seat and the handle member. The upper cover is fixedly connected to the waterway seat. The side part of the upper cover has a first through hole, and the top of the upper cover has a second through hole; The handle member is rotatably connected to the upper cover; Wherein, at least a part of the waterway adapter and the transmission assembly are both located in the area enclosed by the upper cover and the waterway seat, and the second end of the waterway adapter can expand and contract through the first through hole; A part of the transmission assembly passes through the second through hole and is fixedly connected to the handle member.

7. The filter element device according to claim 6, characterized in that, One side of the upper cover facing the handle member has two first limiting portions arranged circumferentially, and one side of the handle member facing the upper cover has a second limiting portion; When the handle member rotates relative to the upper cover to the first position, the second limiting portion is clamped with one of the first limiting portions; when the handle member rotates relative to the upper cover to the second position, the second limiting portion is clamped with the other first limiting portion.

8. The filter element device according to claim 7, characterized in that, One of the first limiting portion and the second limiting portion is a limiting groove, and the other of the first limiting portion and the second limiting portion is a limiting convex portion.

9. The filter element device according to claim 6, characterized in that, The filter element device further includes: a handle, and the handle is rotatably connected to the side portion of the upper cover.

10. The filter element device according to any one of claims 1-5, 7-9, characterized in that, The filter bottle assembly includes: a filter bottle and the water channel seat, and the water channel seat is installed at the opening of the filter bottle; Wherein, the water channel seat has a mounting hole, and the water path adapter is inserted into the mounting hole and the water path hole communicates with the filter bottle.

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