Filter element device and water purifier

Abstract

The utility model discloses a filter element device and water purifier. The filter element device provided by the application comprises a first end portion, a second end portion and a side portion between the first end portion and the second end portion, the side of the side portion or the first end portion is provided with a first communication portion for water route communication with a host; the communication direction of the first communication portion is a first direction, the first end portion is used for sleeving a locking member on the host to fix the filter element device in the first direction; the external contour of the end face shape of the first end portion is used for matching the sleeving structure of the locking member. The mounting mode of the filter element device does not need to rotate the filter element device. Specifically, the first communication portion for water route communication with the host is arranged on the side of the filter element device, and then the sleeving mode of the locking member is combined, so that when the filter element device is assembled on the host, the filter element device can be stably assembled on the host without rotation, the installation is convenient, and the filter element device is not prone to being stuck.

Description

Technical Field

[0001] This utility model relates to the field of water purification equipment technology, and in particular to a filter cartridge device and a water purifier. Background Technology

[0002] During the use of water purification equipment, the internal filter element is a consumable. After a certain period of use, the filter element needs to be replaced to ensure the water purification effect. The connection of the traditional filter element is usually set on the end face of the filter element. During installation, it is installed by rotating or screwing. The installation process requires force to turn the filter element, which is relatively troublesome. The rotating structure may also get stuck. Utility Model Content

[0003] To address the problems in existing technologies where rotating and snapping the filter cartridge during replacement is cumbersome and may cause jamming, this invention provides a filter cartridge device and a water purifier.

[0004] This application provides a filter element device, including a first end, a second end, and a side portion located between the first end and the second end. The side portion or the side surface of the first end is provided with a first connecting portion for water communication with a host. The connecting direction of the first connecting portion is set as a first direction. The first end is used for a locking member on the host to be sleeved to fix the filter element device in the first direction. The outer contour of the end face shape of the first end is used to match the sleeve structure of the locking member.

[0005] In some embodiments, the side of the first end is provided with a sleeve portion for engaging with the locking member, the outer shape and size of the sleeve portion being the same as the shape and size of the sleeve interface of the locking member.

[0006] In some embodiments, the side of the first end is provided with two opposing and parallel planes, which are used to fit against the opposite sides of the sleeve interface of the locking member.

[0007] In some embodiments, the end face of the first end has an embedding groove for at least partially embedding the locking member of the host.

[0008] In some embodiments, the embedding groove extends in a direction perpendicular to the plane, and its two ends are respectively connected to the two planes;

[0009] Alternatively, the embedding groove and the first communicating portion are disposed opposite each other along the first direction, and the first direction is perpendicular to the extending direction of the embedding groove;

[0010] The first connecting part has a water flow channel for water connection with the host, and the distance between the embedded groove and the port of the water flow channel is L3, 15mm≤L3≤90mm.

[0011] In some embodiments, the filter element device is further provided with a locking member, which is disposed at the first end and is used to lock the locking member in the sleeve portion.

[0012] In some embodiments, along the direction from the second end to the first end, the height of the socket is lower than the height of the first connecting portion, and the absolute value of the height difference between the socket and the first connecting portion is L4, where the value of L4 is greater than zero and less than the width of the first connecting portion in the aforementioned height direction.

[0013] This application also provides a water purifier, including the above-mentioned filter cartridge device and a main unit. The main unit includes a body and a locking member. The body is provided with an assembly part for assembling the filter cartridge device and a second connecting part for water circuit communication with the filter cartridge device. The locking member is rotatably or slidably disposed on the assembly part and is used to sleeve the first end to prevent the first connecting part and the second connecting part from disengaging.

[0014] The locking member has a locked state that can be rotated or slid to engage with the first end, and the locking member also has an unlocked state that can be reset to disengage from the first end.

[0015] In some embodiments, the locking member has a U-shaped structure, including a horizontal part and a vertical part, with the vertical part connected to both ends of the horizontal part to form the U-shaped structure, and the two vertical parts are rotatably connected to the body;

[0016] When the locking member is in the locked state, the two vertical portions are respectively used to fit against the two planes of the first end.

[0017] In some embodiments, the locking element further includes an embedded locking strip disposed at the U-shaped opening of the U-shaped structure;

[0018] When the locking element is in the locked state, the embedding strip is at least partially used to embed into the embedding slot at the first end.

[0019] Compared with existing technologies, the filter cartridge device provided by this utility model has the following advantages: the installation method of the filter cartridge device provided in this application does not require rotation of the filter cartridge device. Specifically, by setting the first connecting part for water circuit connection with the host machine on the side of the filter cartridge device, and combining it with the locking sleeve mode, the filter cartridge device can be stably installed on the host machine without rotation when it is assembled, which is convenient for installation and less prone to jamming. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of an embodiment of the locking component provided in this application in a locked state;

[0021] Figure 2 This is a schematic diagram of a structure in one embodiment of the present application where the locking element is separate from the filter element device;

[0022] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the locking component provided in this application in an unlocked state;

[0023] Figure 4 This is a top view along the Y direction in one embodiment of this application;

[0024] Figure 5 This is a schematic diagram of the planar structure of the end face of the first end of the filter element device provided in one embodiment of this application;

[0025] Figure 6 This is a schematic planar view of the side of the filter element device provided in one embodiment of this application;

[0026] Figure 7 This is a schematic diagram of the planar structure along the X direction in one embodiment of the locking member provided in this application.

[0027] 100. Filter element device; 11. First end; 111. Socket part; 112. Plane; 113. Embedded groove; 12. Second end; 13. Side; 14. Locking element; 101. First connecting part; 01. Connecting plug; 200. Main unit; 21. Locking element; 211. Horizontal part; 212. Vertical part; 213. Embedded retaining strip; 201. Second connecting part; 02. Connecting socket; 03. Socket interface; 04. Water flow channel; X. First direction. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0033] The present invention will now be described in further detail with reference to the accompanying drawings.

[0034] like Figure 1 , Figure 2 The filter cartridge device 100 shown includes a first end 11, a second end 12, and a side portion 13 located between the first end 11 and the second end 12. The side portion 13 or the side of the first end 11 is provided with a first connecting portion 101 for water communication with a main unit 200. With the above design, when the filter cartridge device 100 provided in this application is installed on the main unit 200, it is water-connected to the main unit 200 through the first connecting portion 101 located on its side.

[0035] like Figure 1 , Figure 2 As shown, the first connecting part 101 is configured with a first direction X as the connecting direction. The first end 11 is used for the locking member 21 on the main unit 200 to be sleeved, so as to fix the filter element device 100 in the first direction X. When the first connecting part 101 is connected to the water channel of the main unit 200, the locking member 21 on the main unit 200 can be sleeved with the first end 11, thereby restricting the movement of the filter element device 100, so that the filter element device 100 cannot move in the first direction X, thereby ensuring that the first connecting part 101 can maintain a good communication state with the main unit 200 and will not detach from the main unit 200.

[0036] like Figure 1 , Figure 2 As shown, to facilitate the engagement of the locking member 21 with the first end 11, the outer contour of the end face shape of the first end 11 is designed to match the engagement structure of the locking member 21. In practical applications, the locking member 21 is fitted onto the side of the first end 11 through its end portion. This design ensures that the locking member 21 is less prone to wobbling after being fitted with the first end 11, thus enhancing the stability of the filter element device 100 after being locked by the locking member 21.

[0037] In summary, the filter element device 100 provided in this application does not require rotation during installation. Specifically, by providing a first connecting part 101 for water communication with the main unit 200 on the side of the filter element device 100, and combining this with the locking member 21, the filter element device 100 can be stably mounted on the main unit 200 without rotation when assembled, making installation convenient and reducing the likelihood of jamming.

[0038] The technical details of each component will be introduced below.

[0039] In some implementations, such as Figure 1 , Figure 2 , Figure 4 As shown, the side of the first end 11 is provided with a sleeve portion 111 for engaging with the locking member 21. The outer shape and size of the sleeve portion 111 are the same as the shape and size of the socket 03. It should be noted that the sleeve portion 111 is the contact part between the locking member 21 and the first end 11 after the locking member 21 is fitted onto it, and the socket 03 is the opening on the locking member 21 for engaging the first end 11. With the above design, when the locking member 21 is fitted onto the sleeve portion 111 of the first end 11, the locking member 21 and the sleeve portion 111 can be in a relatively close fit, thereby making the filter element device 100 less prone to shaking in the communication direction (i.e., the first direction X) of the first communication portion 101, maintaining the stability of the connection between the first communication portion 101 and the water passage of the main unit 200.

[0040] In some implementations, such as Figure 1 , Figure 3 , Figure 5 As shown, the side of the first end 11 is provided with two opposing and parallel planes 112, which are used to fit against the opposite sides of the sleeve interface 03 of the locking member 21. When the locking member 21 is sleeved on the sleeve portion 111 of the first end 11, the inner side of the sleeve interface 03 of the locking member 11 fits against the two planes 112 respectively. Through the above design, due to the fitting effect between the planes 112 and the sleeve interface 03 of the locking member 11, the filter element device 100 can be prevented from rotating in the circumferential direction, further strengthening the fixation of the filter element device 100 in position.

[0041] In some other implementations, such as Figure 4 , Figure 5 As shown, the relative distance between the two planes 112 is L1, where L1 ≥ 66 mm. Furthermore, along the direction from the second end 12 to the first end 11, the height of the two planes 112 is L2, where L2 ≥ 10 mm.

[0042] In some implementations, such as Figure 3 , Figure 4 , Figure 5 As shown, the end face of the first end 11 is provided with an insertion groove 113 for at least part of the locking member 21 of the main unit 200 to be inserted. The locking member 21 can be inserted into the end face of the first end 11 through the insertion groove 113 when the locking member 21 is sleeved on the sleeve portion 111 of the first end 11 to enhance the fixing effect on the filter element device 200.

[0043] Furthermore, such as Figure 3 , Figure 4 , Figure 5 As shown, the embedding groove 113 extends in a direction perpendicular to the plane 112, and its two ends are respectively connected to the two planes 112. This design simplifies the structure of the locking member 21.

[0044] Specifically, in some implementation methods, such as Figure 4 , Figure 5 As shown, the aforementioned embedding groove 113 and the first connecting portion 101 are disposed opposite each other along the first direction X, and the first direction X is perpendicular to the extending direction of the embedding groove 113. Furthermore, the first connecting portion 101 has a water flow channel 04 for water connection with the host 200, and the distance between the ports of the embedding groove 113 and the water flow channel 04 is L3, where 15mm≤L3≤90mm.

[0045] In some other embodiments, the end face of the first end 11 may be provided with a connection structure for at least a portion of the locking member 21. This connection structure can serve the same or similar function as the embedded groove 113, for abutting, snapping, etc., with at least a portion of the locking member 21, thereby enhancing the fixing effect of the locking member 21 on the filter element device 100. Examples are given below.

[0046] Example 1: The above-mentioned connection structure can be a U-shaped card holder. When the locking member 21 is sleeved on the sleeve portion 111 of the first end 11, part of the locking member 21 can be inserted into the U-shaped opening of the card holder, thereby enhancing the fixing effect of the locking member 21 on the filter element device 100.

[0047] Example 2: The above-mentioned connection structure can be a protruding structure with a supporting surface. When the locking member 21 is sleeved on the sleeve portion 111 of the first end 11, the supporting surface of the protruding structure can support the locking member 21 on at least one side of the first direction along the first direction, so as to enhance the fixing effect of the locking member on the filter element device 100.

[0048] In some implementations, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the filter element device 100 provided in this application is further provided with a locking member 14, which is disposed at the first end 11 and is used to lock the locking member 21 in the sleeve portion 111. In practical applications, the locking member 14 can be a movable lock with a restricted state and an avoidance state. When the movable lock is in the restricted state, it can restrict the locking member 21 in the sleeve portion 111, so that the locking member 21 can always maintain the sleeve state with the first end 11 and will not be disengaged from the first end 11 due to vibration or other non-human subjective factors, further ensuring the stability of the filter element device 100 after it is assembled on the host 200. If it is necessary to disassemble the filter element device, the movable lock can be adjusted from the restricted state to the avoidance state by pressing, flicking, etc., so that the locking member 21 will not be locked, and the locking member 21 can be disengaged from the first end 11 by sliding or rotating.

[0049] It is understood that the aforementioned movable latch may have a spring or a spring plate, which can maintain the movable latch in a restricted state. During the movement of the locking member 21 to the sleeve portion 111, the distal end of the locking member 21 along its movement direction can abut against the movable latch, causing the movable latch to change from a restricted state to a yielding state. When the locking member 21 moves to the sleeve portion 111, the locking member 21 disengages from the movable latch, and the movable latch returns to the restricted state under the action of the spring or spring plate. In the restricted state, the movable latch abuts against the locking member 21 to prevent the locking member 21 from moving in the direction of disengagement from the sleeve portion 111. Through the above design, automatic locking of the locking member 21 is achieved during its movement to the sleeve portion 111, improving ease of use.

[0050] In some implementations, such as Figure 1 , Figure 7 As shown, along the direction from the second end 12 to the first end 11 (i.e. Figure 7 In the Y direction (as shown in the diagram), the height of the socket 111 is lower than the height of the first connecting portion 101, and the absolute value of the height difference between the socket 111 and the first connecting portion 101 is L. The value of L is greater than zero and less than the width of the first connecting portion 101 in the aforementioned height direction. It should be noted that... Figure 7In the diagram, line M represents the height of the second connecting portion 201 in the Y direction. Since the second connecting portion 201 and the first connecting portion 101 are at the same height in the Y direction after the filter element device 100 is assembled onto the main unit 200, line M can also represent the height of the first connecting portion 101 in the Y direction; similarly, Figure 7 In the diagram, line N represents the height in the Y direction when the locking member 21 locks the filter element device 100. Since the locking member 21 is positioned at the sleeve portion 111 when locking the filter element device 100, line N can also represent the height in the Y direction of the sleeve portion 111. Therefore, the distance between line M and line N is the aforementioned L. It can be understood that after the locking member 21 is sleeved with the first end 11, it blocks the side of the filter element device 100 away from the first connecting portion 101, thereby preventing the first connecting portion 101 from disengaging from the main unit 200. Through the above design, the abutting part of the locking member 21 on the side of the filter element device 100 away from the first connecting portion 101 is positioned on a very close height plane 112 with the first connecting portion 101 (i.e., the part of the first connecting portion 101 and the part of the filter element device 100 blocked by the locking member 21 are in a completely opposite or nearly opposite state in the radial direction of the filter element device 100), thus enabling the locking member 21 to achieve a relatively stable blocking effect.

[0051] In some other implementations, such as Figure 1 , Figure 2 As shown, the first connecting part 101 is used to connect with the host 200. It can be understood that after the first connecting part 101 is connected with the host 200, the movement of the filter element device 100 can be restricted in the axial direction under the action of the connection structure. Combined with the radial restriction of the filter element device 100 by the locking member 21, the position of the filter element device 100 after being assembled on the host 200 can be fixed.

[0052] In order to further enhance the technical effect of fixing the position of the filter element device 100, the insertion direction of the first connecting part 101 is the first direction X, which is perpendicular to the axis of the filter element device 100.

[0053] like Figure 1 , Figure 2 , Figure 3 As shown, the water purifier provided in this application includes the above-mentioned filter cartridge device 100 and main unit 200. The main unit 200 includes a body and a locking member 21. The body is provided with an assembly part for assembling the filter cartridge device 100 and a second connecting part 201 for water circuit communication with the filter cartridge device 100. The locking member 21 is rotatably or slidably disposed on the assembly part for sleeved onto the first end 11 to prevent the first connecting part 101 and the second connecting part 201 from disengaging.

[0054] Locking member 21 has a rotatable or slidable (rotatable in the figure) locked state to engage with the first end 11 (e.g.) Figure 1 As shown), the locking member 21 also has an unlocked state that can be reset to disengage from the first end 11 (as shown). Figure 3 (As shown).

[0055] The above-mentioned filter element device 100 is assembled without rotating it. Specifically, by setting the first connecting part 101 for water communication with the main unit 200 on the side of the filter element device 100, and combining it with the locking member 21, the filter element device 100 can be stably assembled on the main unit 200 without rotation when it is assembled, making installation convenient and less prone to jamming.

[0056] In some other embodiments, an elastic element is provided at the movable connection between the locking member 21 and the body. The elastic element can be a spring or a sheet, with its elastic ends abutting against the locking member 21 and the body respectively, to keep the locking member 21 in the unlocked state. Through this design, the locking member 21 can be in the unlocked state during the assembly of the filter element device 100, eliminating the need for manual movement of the locking member 21 to the unlocked state, thus facilitating the assembly process of the filter element device 100.

[0057] In some implementations, such as Figure 1 , Figure 2 , Figure 4 As shown, the locking member 21 has a U-shaped structure, including a horizontal portion 211 and a vertical portion 212. Both ends of the horizontal portion 211 are connected to the vertical portion 212 to form a U-shaped structure. The two vertical portions 212 are rotatably connected to the body. When the locking member 21 is in the locked state, the sides of the two vertical portions 212 that are close to each other are respectively used to abut against the two planes 112 of the first end 11, and the planes 112 are parallel to the rotation planes 112 of the vertical portions 212. Through the above design, due to the abutment between the planes 112 and the vertical portions 212, the filter element device 100 can be prevented from rotating in the circumferential direction, further strengthening the fixation of the filter element device 100 in position.

[0058] In some other implementations, such as Figure 1 , Figure 2 As shown, the first connecting part 101 and the second connecting part 201 can be a connecting plug 01 and a connecting socket 02 that are matched with each other. Since the connecting plug 01 is inserted into the connecting socket 02, the movement of the filter element device 100 in its axial direction can be restricted.

[0059] In some implementations, such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the locking member 21 also includes an embedded retaining strip 213, which is disposed at the U-shaped opening of the U-shaped structure. When the locking member 21 is in the locked state, the embedded retaining strip 213 is at least partially embedded in the embedding groove 113 of the first end 11. In practical applications, since the locking member 21 needs to be fitted onto the side of the first end 11, its structure has a large opening, making it prone to deformation and breakage. Through the above design, the embedded retaining strip 213 can strengthen the structure of the locking member 21 itself, making it less prone to breakage, and it is more stable and less prone to shaking after being fitted onto the first end 11. In addition to the above effects, after the embedded retaining strip 213 is embedded into the embedding groove 113 of the first end 11, it can also restrict the filter element device 100 in the first direction X.

[0060] In some other embodiments, the assembly portion includes a vertical portion and a supporting portion. The vertical portion is vertically positioned relative to the bottom of the machine body, and the supporting portion is horizontally positioned relative to the bottom of the machine body. A second connecting portion 201 is provided in the vertical portion. When the filter element device 100 is assembled onto the assembly portion, the side portion 13 of the filter element device 100 fits against the vertical portion, and the second end portion 12 of the filter element device 100 abuts against the supporting portion. Through the above design, combined with the locking action of the locking member 21, the filter element device 100 can be stably fixed to the assembly portion of the machine body.

[0061] In summary, the filter element device 100 provided in this application does not require rotation of the filter element during assembly with the main unit 200. Compared with traditional threaded connections or rotary snap-fit ​​connections, the locking part 21 sleeve connection method is less prone to jamming and is more labor-saving during disassembly and installation.

[0062] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filter cartridge device, characterized in that, It includes a first end (11), a second end (12) and a side portion (13) located between the first end (11) and the second end (12), wherein the side portion (13) or the side of the first end (11) is provided with a first connecting portion (101) for water communication with the host (200). The first connecting part (101) is set to the first direction (X) for connecting direction. The first end (11) is used for the locking member (21) on the host (200) to be sleeved to fix the filter element device (100) in the first direction (X). The outer contour of the end face shape of the first end (11) is used to match the sleeve structure of the locking member (21).

2. The filter element device according to claim 1, characterized in that, The side of the first end (11) is provided with a sleeve part (111) for engaging with the locking member (21), and the outer shape and size of the sleeve part (111) are the same as the shape and size of the socket (03) of the locking member (21).

3. The filter element device according to claim 2, characterized in that, The side of the first end (11) is provided with two opposing and parallel planes (112), which are used to fit against the opposite sides of the socket (03) of the locking member (21).

4. The filter element device according to claim 3, characterized in that, The end face of the first end (11) is provided with an embedding groove (113) for at least part of the locking member (21) of the host (200) to be embedded.

5. The filter element device according to claim 4, characterized in that, The embedding groove (113) extends in a direction perpendicular to the plane (112), and its two ends are respectively connected to the two planes (112); Alternatively, the embedding groove (113) and the first communicating portion (101) are disposed opposite each other along the first direction (X), and the first direction (X) is perpendicular to the extending direction of the embedding groove (113); The first connecting part (101) has a water flow channel (04) for water connection with the host (200), and the distance between the embedded groove (113) and the port of the water flow channel (04) is L3, 15mm≤L3≤90mm.

6. The filter element device according to claim 2, characterized in that, The filter element device (100) is also provided with a locking member (14), which is located at the first end (11) and is used to lock the locking member (21) in the sleeve part (111).

7. The filter element device according to claim 2, characterized in that, Along the direction from the second end (12) to the first end (11), the height of the socket (111) is lower than the height of the first connecting part (101), and the absolute value of the height difference between the socket (111) and the first connecting part (101) is L4. The value of L4 is greater than zero and less than the width of the first connecting part (101) in the above-mentioned height direction.

8. A water purifier, characterized in that, include: The filter element device (100) according to any one of claims 1 to 7; The main unit (200) includes a body and a locking member (21). The body is provided with an assembly part for assembling a filter element device (100) and a second communication part (201) for water communication with the filter element device (100). The locking member (21) is rotatably or slidably disposed on the assembly part and is used to sleeve the first end (11) to prevent the first communication part (101) and the second communication part (201) from disengaging. The locking member (21) has a locked state that can be rotated or slid to engage with the first end (11), and the locking member (21) also has an unlocked state that can be reset to disengage from the first end (11).

9. The water purifier according to claim 8, characterized in that, The locking member (21) has a U-shaped structure, including a horizontal part (211) and a vertical part (212). Both ends of the horizontal part (211) are connected to the vertical part (212) to form the U-shaped structure. The two vertical parts (212) are rotatably connected to the body. When the locking member (21) is in the locked state, the two longitudinal portions (212) are respectively used to fit against the two planes (112) of the first end (11).

10. The water purifier according to claim 9, characterized in that, The locking member (21) also includes an embedded card strip (213), which is disposed at the U-shaped opening of the U-shaped structure; When the locking member (21) is in the locked state, the embedding strip (213) is at least partially used to embed into the embedding groove (113) of the first end (11).

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