A composite filter element water purifier

Abstract

The present invention discloses a composite filter element water purifier, which relates to the technical field of water purifiers and includes a water purifier structure with a filter element mechanism installed inside. Among them, the filter element mechanism includes a mounting member disposed inside the water purifier structure, a filter element is installed inside the mounting member, a driving member capable of synchronously moving with the filter element is disposed inside the mounting member, and a transition pipe for communicating with the filter element is fixedly disposed on the inner wall of the mounting member; a switching member is installed inside the transition pipe. Through the cooperation of the driving member and the loading and unloading action of the filter element, the present invention can, under the cooperation of the driving member and the switching member, realize the follow-up of the switching member during the disassembly and assembly of the filter element, so that under the flipping of the switching member, the corresponding automatic on-off of the transition pipe during the disassembly and assembly of the filter element is realized, enabling the user not to separately cut off the water source during the disassembly and assembly process and avoiding water leakage during the disassembly, replacement and assembly of the filter element caused by the user's forgetting.

Description

Technical Field

[0001] The present invention relates to water purifier technology, and particularly to a composite filter element water purifier. Background Art

[0002] A water purifier is a device used for deep filtration and purification of water quality, widely applied in households, commercial places, etc. to provide safe and healthy drinking water. A filter element is installed inside the water purifier, and impurities and pollutants in the water are removed through physical, chemical or biological methods.

[0003] Patent document CN109319961B discloses a water purifier on the publication date of May 28, 2024. The water purifier includes a machine base, a composite filter element and a sliding assembly. The machine base is provided with a first interface group, and the composite filter element is provided with a first connector group for docking with the first interface group. The composite filter element is detachably installed on the machine base through the first connector group. The sliding assembly can reciprocally slide between a first position and a second position. When the sliding assembly is in the first position, it can press the composite filter element onto the machine base. When the sliding assembly is in the second position, the composite filter element is released so that the composite filter element can be detached from the machine base. The present invention realizes the replacement of the composite filter element by using the sliding assembly, and the replacement process is simple, reliable and convenient to operate.

[0004] When replacing the filter element of the existing water purifier, generally, the water circuit needs to be cut off first to avoid water leakage inside the water purifier due to water leakage, which increases the replacement steps of the filter element. At the same time, users are prone to forgetting to cut off the water source, which ultimately leads to water leakage, affecting the normal replacement of the filter element and the normal use of the water purifier, causing economic losses to users. Therefore, a composite filter element water purifier is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a composite filter element water purifier to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: including,

[0007] A water purifier structure with a filter element mechanism installed inside; wherein,

[0008] The filter element mechanism includes a mounting member arranged inside the water purifier structure. A filter element is installed inside the mounting member. A driving member that can move synchronously with the filter element is arranged on the inner side of the mounting member. A transition pipe for connecting the filter element is also fixedly arranged on the inner wall of the mounting member.

[0009] A switching component is installed inside the transition pipe. When the filter element is disassembled or assembled by rotating relative to the installation component, it passively drives the driving component to rotate to drive the switching component to achieve the on / off of the transition pipe.

[0010] As a further description of the above technical solution: The installation component includes an installation base fixed inside the structure of the water purifier. An inlet and an outlet are respectively provided on the installation base. The internal water path of the installation base is connected to the water inlet end and the water outlet end of the top of the filter element through the inlet and the outlet.

[0011] A connecting sleeve is further fixed on the end face of the installation base around the inlet and the outlet. A bayonet is provided on the outer wall of the connecting sleeve.

[0012] As a further description of the above technical solution: A clamping block is fixedly arranged on the outer wall of the filter element, and it can cooperate with the bayonet to realize the assembly between the filter element and the connecting sleeve.

[0013] As a further description of the above technical solution: The bayonet is arranged in a spiral shape along the outer wall of the connecting sleeve, and the clamping block rotates upward along the bayonet to realize the clamping cooperation with the bayonet.

[0014] As a further description of the above technical solution: Transition pipes are arranged around the installation base corresponding to the outer periphery of the inlet and the outlet.

[0015] As a further description of the above technical solution: The driving component includes a rotating ring rotatably arranged on the inner side wall of the installation base. A pushing port is provided on the outer wall of the rotating ring, and it can be pushed by the clamping block to rotate synchronously with the filter element. A driving bevel gear is arranged on the inner side wall of the rotating ring.

[0016] As a further description of the above technical solution: The starting point of the pushing port coincides with the starting point of the bayonet.

[0017] As a further description of the above technical solution: The length of the pushing port is the same as the projected length of the bayonet in the axial direction of the installation base.

[0018] As a further description of the above technical solution: The switching component includes a blocking ball that can fit with the inner wall of the transition pipe. A flow port is radially provided on the blocking ball.

[0019] As a further description of the above technical solution: A control valve is connected to the outside of the blocking ball. A driven bevel gear meshing with the driving bevel gear is fixedly arranged on the periphery of the control valve. The driven bevel gear can be driven by the driving bevel gear to drive the blocking ball to deflect.

[0020] In the above technical solution, a composite filter element water purifier provided by the present invention, through the cooperation of the driving member and the loading and unloading action of the filter element, can, under the cooperation of the driving member and the on-off member, realize the follow-up of the on-off member during the disassembly and assembly of the filter element. Thus, under the flipping of the on-off member, the automatic on-off of the corresponding transition pipe during the disassembly and assembly of the filter element is realized, so that the user does not need to separately cut off the water source during the disassembly and assembly process, and it is avoided that the user forgets and causes water leakage during the disassembly, replacement and assembly of the filter element, making the replacement of the filter element more convenient and safe. At the same time, under the setting of the sealing member, during the movement of the filter element, the sealing ring can always keep in contact and fit with the filter element to achieve sealing and avoid water leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the water purifier structure provided by an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the water purifier structure provided by an embodiment of the present invention;

[0025] Figure 4 It is an exploded structure diagram of the connecting sleeve and the rotating ring provided by an embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the sealing member in a compressed state provided by an embodiment of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the sealing member in an extended state provided by an embodiment of the present invention;

[0028] Figure 7 It is a schematic diagram of the connection structure between the transition pipe and the on-off member provided by an embodiment of the present invention;

[0029] Figure 8 For the appendix provided by an embodiment of the present invention Figure 3 The enlarged schematic diagram of the structure of part A in the middle;

[0030] Figure 9 It is a schematic diagram of the end face structure of the control valve provided by an embodiment of the present invention.

[0031] Description of the reference numerals:

[0032] 100, Water purifier structure; 101, Base; 102, Raw water tank; 103, Self-priming pump; 104, Pure water tank; 105, Water extraction pump; 106, Outer shell; 107, Water outlet nozzle; 200, Filter element mechanism; 201, Mounting part; 201a, Mounting seat; 201b, Inlet; 201c, Outlet; 201d, Connecting sleeve; 201e, Bayonet; 202, Filter element; 202a, Locking block; 203, Support member; 203a, Support plate; 203b, Top spring; 204, Driving member; 204a, Rotating ring; 204b, Pushing port; 204c, Driving bevel gear; 205, Transition pipe; 206, On-off member; 206a, Blocking ball; 206b, Flow port; 206c, Control valve; 206d, Driven bevel gear; 206e, Driving groove; 207, Sealing member; 207a, Sealing seat; 207b, Telescopic sleeve; 207c, Sealing ring; 207d, Connecting rod; 207e, Driving head. Detailed implementation mode

[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further introduced in detail below with reference to the accompanying drawings.

[0034] Please refer to Figure 1-2 , an embodiment of the present invention provides a technical solution: including a water purifier structure 100 and a filter element mechanism 200.

[0035] Specifically, the water purifier structure 100 includes a base 101, a raw water tank 102 is placed on the base 101, a self-priming pump 103 for pumping raw water out of the raw water tank 102 is installed at the bottom of the raw water tank 102, and the outside of the self-priming pump 103 is communicated with a filter element mechanism 200. The filter element mechanism 200 is installed inside the water purifier structure 100. At the same time, the other end of the filter element mechanism 200 is communicated with a pure water tank 104 for storing purified and filtered pure water. The outside of the base 101 is also detachably installed with an outer shell 106, and a water outlet nozzle 107 is installed on the outer wall of the outer shell 106, and the pure water tank 104 and the water outlet nozzle 107 are communicated through a water extraction pump 105.

[0036] The filter element mechanism 200 includes a mounting part 201 arranged inside the water purifier structure 100. A transition pipe 205 for communicating with the filter element 202 is fixedly arranged on the inner wall of the mounting part 201, and two filter elements 202 are installed inside the mounting part 201.

[0037] Further, the mounting member 201 includes a mounting base 201a fixed inside the water purifier structure 100. Two groups of water inlets 201b and water outlets 201c are sequentially provided on the mounting base 201a. Transition pipes 205 are arranged around the water inlets 201b and water outlets 201c corresponding to the mounting base 201a, so as to connect the filter element 202 with the water inlets 201b and water outlets 201c through the transition pipes 205. Two filter elements 202 are correspondingly installed below the two groups of water inlets 201b and water outlets 201c. Optionally, the two filter elements 202 are a CF filter element and an RO filter element respectively. The water inlets 201b and water outlets 201c on the mounting base 201a are docked with the water inlet end and water outlet end of the corresponding filter element 202. The inner water inlet 201b and water outlet 201c are connected, so that the raw water entering the internal water path enters the first filter element 202 through the water inlet 201b, moves from the water outlet end of the filter element 202 to the inner water outlet 201c after filtration, and with the connection between the inner water inlet and outlet, enters the second filter element 202 through the water outlet 201c and the next water inlet 201b for further treatment, and finally flows out through the outermost water outlet 201c to complete the filtration.

[0038] Furthermore, an internal water path is arranged inside the mounting base 201a to realize the connection between the raw water tank 102 and the filter element 202. That is, one ends of the water inlets 201b and water outlets 201c on both sides are respectively connected to the raw water tank 102 and the pure water tank 104 through the internal water path, and the other ends are connected to the two filter elements 202. One ends of the two adjacent inner water outlets 201c and water inlets 201b are connected, and the other ends are also connected to the filter element 202. That is, the water in the raw water tank 102 is transported to the internal water path by the self-priming pump 103, first enters the filter element 202 through the outermost water inlet 201b, after the first-stage filtration, enters the inner water outlet 201c from the water outlet end of the filter element 202 through the transition pipe 205. At this time, under the connection of the inner water inlets and outlets 201c, it continues to enter the next filter element 202 for the second-stage filtration, and finally is transported from the water outlet end of the filter element 202 to the outermost water outlet 201c. At this time, the filtration treatment of the raw water is completed, and finally it enters the pure water tank 104 under the action of the water pump 105 for storage for users to use.

[0039] Two connecting sleeves 201d are also fixed on the mounting base 201a. The two groups of water inlets 201b and water outlets 201c are respectively located inside the two connecting sleeves 201d, and bayonets 201e are arranged on the outer walls of the connecting sleeves 201d. Synchronously, a clamping block 202a is fixedly arranged on the outer wall of the filter element 202, and it can cooperate with the bayonet 201e to realize the assembly between the filter element 202 and the connecting sleeve 201d.

[0040] Preferably, the bayonet 201e is arranged in a spiral shape along the outer wall of the connecting sleeve 201d. Thus, by sliding the clamping block 202a inside the bayonet 201e and rotating and rising along the path of the bayonet 201e, the clamping fit between the clamping block 202a and the bayonet 201e can be achieved, thereby completing the assembly between the filter element 202 and the connecting sleeve 201d.

[0041] Please refer to Figure 1-7 , the embodiment of the present invention provides a technical solution: including a support member 203, a driving member 204, a switching member 206, and a sealing member 207.

[0042] Specifically, the filter element mechanism 200 further includes a driving member 204 arranged inside the mounting member 201 and capable of synchronously moving with the filter element 202. A switching member 206 is also installed inside the transition pipe 205. The switching member 206 and the driving member 204 are linked. There is also a sealing member 207 arranged outside the transition pipe 205 and a support member 203 arranged at the bottom of the filter element 202. At the same time, the driving member 204, the switching member 206, the sealing member 207, and the support member 203 are symmetrically arranged in two groups with respect to the mounting seat 201a to meet the assembly requirements of two filter elements 202.

[0043] Furthermore, the support member 203 includes a support plate 203a arranged at the bottom of the filter element 202, and a top spring 203b is fixedly arranged between the support plate 203a and the mounting seat 201a. To support the filter element 202 through the cooperation of the elastic force of the top spring 203b and the support plate 203a. At the same time, during the elastic contraction of the top spring 203b itself, the smooth disassembly and assembly of the filter element 202 can still be ensured.

[0044] The driving member 204 includes a rotating ring 204a rotatably arranged on the inner side wall of the mounting seat 201a. Push ports 204b are arranged in a circular array on the outer wall of the rotating ring 204a. The push ports 204b can be pushed by the clamping block 202a to drive the rotating ring 204a to rotate synchronously with the filter element 202. A driving bevel gear 204c is arranged on the inner side wall of the rotating ring 204a. That is, during the movement of the filter element 202, the driving bevel gear 204c can rotate with the disassembly and assembly actions of the filter element 202.

[0045] A switching component 206 is installed inside each of the transition pipes 205. The switching component 206 includes a blocking ball 206a that can fit against the inner wall of the transition pipe 205. A flow-through port 206b is radially formed along the blocking ball 206a. Through the setting of the flow-through port 206b, when the axial direction of the flow-through port 206b coincides with the axial direction of the transition pipe 205, the transition pipe 205 is in an open state, and the water purifier can be used normally. When the axial direction of the flow-through port 206b is perpendicular to the axial direction of the transition pipe 205 by flipping the blocking ball 206a, the transition pipe 205 is in a closed state under the closure of the complete spherical surface of the blocking ball 206a. A control valve 206c is fixedly connected to the outside of the blocking ball 206a. The control valve 206c is composed of a disc and a connecting rod, and the control valve 206c penetrates through the transition pipe 205 and extends to the outside thereof. At the same time, a driven bevel gear 206d that meshes with the driving bevel gear 204c is fixedly arranged on the periphery of the control valve 206c. Thus, the driven bevel gear 206d can be driven by the driving bevel gear 204c to drive the blocking ball 206a to deflect. That is, when the filter element 202 and the mounting member 201 are rotated relative to each other for disassembly and assembly, the driving member 204 can be driven passively to rotate to drive the switching component 206 to realize the on-off of the transition pipe 205.

[0046] The sealing member 207 includes a sealing seat 207a fixed to the outside of the two transition pipes 205. A telescopic sleeve 207b is fixedly connected to the end face of the sealing seat 207a, and the other end of the telescopic sleeve 207b is fixedly connected to a sealing ring 207c for fitting against the filter element 202 to achieve sealing. The telescopic sleeve 207b itself has a certain elasticity. Thus, during the disassembly and assembly of the filter element 202, the sealing ring 207c can always maintain the fit with the top of the filter element 202 under the elastic action of the telescopic sleeve 207b.

[0047] Preferably, the starting point of the pushing port 204b coincides with the starting point of the bayonet 201e. Thus, during the installation operation of the filter element 202, the outer clamping block 202a thereof can be synchronously and accurately located within the bayonet 201e and the pushing port 204b. While ensuring the smooth clamping between the bayonet 201e and the clamping block 202a, the rotating ring 204a rotates synchronously with the installation of the filter element 202, so that the driving bevel gear 204c on the rotating ring 204a and the driven bevel gear 206d on the outside of the control valve 206c can be smoothly matched. At the same time, the length of the pushing port 204b is the same as the projected length of the bayonet 201e in the axial direction of the mounting seat 201a. Thus, the pushing port 204b can meet the rising height requirement during the clamping process of the clamping block 202a to ensure the completion degree of the clamping between the filter element 202 and the connecting sleeve 201d. Moreover, the projection of the bayonet 201e in the circumferential direction of the connecting sleeve 201d is set as a quarter arc. Thus, during the installation process, it can be ensured that the rotating ring 204a only rotates 90° to realize the correspondence with the opening and closing angle of the control valve 206c.

[0048] During use, the user first presses down on the support plate 203a to place the filter element 202 between the support plate 203a and the mounting base 201a. Subsequently, the outer clamping block 202a of the filter element 202 is aligned with the starting position of the upper clamping opening 201e on the connecting sleeve 201d, and the clamping block 202a is also located within the pushing opening 204b on the converter. At this time, the filter element 202 can be rotated and moved upward for installation. During the installation process, as the clamping block 202a moves along the path of the clamping opening 201e, the rotating ring 204a can also be driven to rotate through the pushing opening 204b. At this time, with the cooperation of the driving bevel gear 204c and the driven bevel gear 206d, a 90° rotation of the control valve 206c can be achieved, thereby automatically opening the transition pipe 205 during the installation process of the filter element 202. After the installation of the filter element 202 is completed, the water purifier can start to be used. Conversely, during the disassembly and replacement process of the filter element 202, the rotating ring 204a rotates in the reverse direction with the movement of the filter element 202, and then the control valve 206c can be driven to automatically cut off the transition pipe 205. At the same time, during the loading and unloading process of the filter element 202, the sealing ring 207c can be supported by the telescopic sleeve 207b and perform a follow-up height adjustment with the up and down movement of the filter element 202 to ensure that the sealing ring 207c can always be in contact with the end face of the filter element 202, avoiding water leakage during the disassembly process.

[0049] In summary, through the cooperation of the driving member 204 and the loading and unloading actions of the filter element 202, with the cooperation of the driving member 204 and the on-off member 206, the on-off member 206 can follow the movement during the disassembly and assembly process of the filter element 202. Thus, with the flipping of the on-off member 206, the corresponding automatic on-off of the transition pipe 205 during the disassembly and assembly process of the filter element 202 can be achieved, enabling the user to not need to separately cut off the water source during the disassembly and assembly process, and avoiding water leakage caused by the user's forgetfulness during the disassembly and replacement process of the filter element 202, making the replacement of the filter element 202 more convenient and safe. At the same time, with the setting of the sealing member 207, during the movement of the filter element 202, the sealing ring 207c can always maintain contact and fit with the filter element 202 to achieve sealing and avoid water leakage.

[0050] Please refer to Figure 1-8 , in another embodiment provided by the present invention, it includes an on-off member 206 and a sealing member 207.

[0051] Specifically, the on-off member 206 further includes a driving groove 206e provided on the surface of the control valve 206c.

[0052] The sealing member 207 further includes a connecting rod 207d fixed to the periphery of the sealing ring 207c, and a driving head 207e is integrally provided at the end of the connecting rod 207d, and the driving head 207e is slidably embedded in the driving groove 206e.

[0053] Preferably, the driving groove 206e is arranged in an elliptical arc shape, (such as Figure 9One end of the driving groove 206e is close to the center of the end face of the control valve 206c, and the other end of the driving groove 206e is far from the center of the end face of the control valve 206c. The rotation angle of the control valve 206c corresponding to the two ends of the driving groove 206e is 90 degrees. The driving grooves 206e on the two groups of control valves 206c in the same connecting sleeve 201d are arranged in opposite directions. Therefore, while the control valve 206c rotates with the rotating ring 204a, due to the distance difference between the two ends of the driving groove 206e and in cooperation with the sealing seat 207a that restricts the connecting rod 207d which can only move vertically up and down, the driving head 207e can slide relatively inside the driving groove 206e as the control valve 206c rotates. Thus, during the rotation of the control valve 206c, the driving head 207e moves from one end of the driving groove 206e to the other end. As the driving head 207e slides from one end of the driving groove 206e to the other end, the lifting movement of the connecting rod 207d can be realized, so as to keep the sealing ring 207c in contact with the end face of the filter element 202, further improving the sealing effect.

[0054] In summary, through the cooperation between the driving groove 206e and the connecting rod 207d, while the sealing ring 207c can be driven to move, the sealing ring 207c can be restricted to eliminate the deformation influence of the telescopic sleeve 207b, and prevent the sealing ring 207c from being offset without restriction during the movement, which may affect the sealing effect.

[0055] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present invention.

Claims

1. A composite filter element water purifier, characterized in that, including, a water purifier structure (100) with a filter element (202) and a filter element mechanism (200) installed inside; among them, the filter element mechanism (200) includes a mounting member (201) arranged inside the water purifier structure (100), a filter element (202) is installed inside the mounting member (201), a driving member (204) capable of synchronously moving with the filter element (202) is arranged inside the mounting member (201), and a transition pipe (205) for communicating with the filter element (202) is fixedly arranged on the inner wall of the mounting member (201); a switching member (206) is installed inside the transition pipe (205), when the filter element (202) rotates relative to the mounting member (201) for disassembly and assembly, the driving member (204) is driven passively to rotate to drive the switching member (206) to realize the on-off of the transition pipe (205); the switching member (206) includes a blocking ball (206a) that can fit with the inner wall of the transition pipe (205), a circulation port (206b) is radially formed on the blocking ball (206a), a control valve (206c) is connected to the outside of the blocking ball (206a), a driven bevel gear (206d) meshing with the driving bevel gear (204c) is fixedly arranged on the periphery of the control valve (206c), and the driven bevel gear (206d) can be driven by the driving bevel gear (204c) to drive the blocking ball (206a) to deflect; it further includes a sealing member (207), the sealing member (207) includes a sealing seat (207a) fixed to the outside of two transition pipes (205), a telescopic sleeve (207b) is fixedly connected to the end face of the sealing seat (207a), and a sealing ring (207c) for fitting with the filter element (202) to achieve sealing is fixedly connected to the other end of the telescopic sleeve (207b), and the switching member (206) further includes a driving groove (206e) left on the surface of the control valve (206c), the sealing member (207) further includes a connecting rod (207d) fixed to the periphery of the sealing ring (207c), and a driving head (207e) is integrally arranged at the end of the connecting rod (207d), and the driving head (207e) can be slidably embedded in the driving groove (206e).

2. The composite filter element water purifier according to claim 1, wherein, the mounting member (201) includes a mounting seat (201a) fixed inside the water purifier structure (100), a water inlet (201b) and a water outlet (201c) are respectively left on the mounting seat (201a), and the internal water path of the mounting seat (201a) is communicated with the top water inlet end and the water outlet end of the filter element (202) through the water inlet (201b) and the water outlet (201c); a connecting sleeve (201d) is further fixed on the end face of the mounting seat (201a) around the water inlet (201b) and the water outlet (201c), and a bayonet (201e) is formed on the outer wall of the connecting sleeve (201d).

3. The composite filter element water purifier according to claim 1 or 2, characterized in that, a block (202a) is fixedly arranged on the outer wall of the filter element (202), and it can cooperate with the bayonet (201e) to realize the assembly between the filter element (202) and the connecting sleeve (201d).

4. The composite filter element water purifier according to claim 3, characterized in that The bayonet (201e) is arranged in a spiral shape along the outer wall of the connecting sleeve (201d), and the clamping block (202a) rotates upward along the bayonet (201e) to achieve a clamping fit with the bayonet (201e).

5. The composite filter element water purifier according to claim 2, wherein, Transition pipes (205) are arranged on the mounting base (201a) corresponding to the peripheries of the water inlet (201b) and the water outlet (201c).

6. The composite filter element water purifier according to claim 1, characterized in that, The driving member (204) includes a rotating ring (204a) arranged on the inner side wall of the mounting base (201a). A pushing port (204b) is formed on the outer wall of the rotating ring (204a), and it can be pushed by the clamping block (202a) to rotate synchronously with the filter element (202). A driving bevel gear (204c) is arranged on the inner side wall of the rotating ring (204a).

7. The composite filter element water purifier according to claim 6, characterized in that, The starting point of the pushing port (204b) coincides with the starting point of the bayonet (201e).

8. The composite filter element water purifier according to claim 6, wherein The length of the pushing port (204b) is the same as the projected length of the bayonet (201e) in the axial direction of the mounting base (201a).

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