Filter element and water purifier

Abstract

The present invention discloses a filter element and a water purifier. The filter element includes an installation housing, a filtering element, and a valve assembly. The installation housing is provided with a receiving cavity and a first installation channel communicating with the receiving cavity. The filtering element is installed in the receiving cavity, and a first water flow channel is formed by spacing the filtering element from the inner wall of the receiving cavity. A second water flow channel is formed in the filtering element. The valve assembly is disposed in the first installation channel. The valve assembly can move relative to the first installation channel to have a first state of opening the first water flow channel and the second water flow channel and a second state of closing the first water flow channel and the second water flow channel. When replacing the filter element, the filter element and the water purifier can avoid the water remaining inside from spilling out.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly to a filter element and a water purifier. Background Art

[0002] With the continuous improvement of living standards, water purifiers have gradually become essential household appliances. In general water purifiers, due to the limited lifespan of the filter media, the filter elements must be removed and replaced with new ones after a period of use.

[0003] However, when replacing the filter element in a traditional water purifier, since there is residual water inside the old filter element, it is inevitable that the water will spill out during the operation process, wetting the user, the ground or the equipment, which poses a certain danger and affects the user experience. Summary of the Invention

[0004] Aiming at the problem that the residual water inside the filter element of a traditional water purifier is likely to spill out and affect the user experience when replacing the filter element, a filter element and a water purifier are proposed. When replacing the filter element, the filter element and the water purifier can avoid the spillage of the residual water inside the filter element.

[0005] The specific technical solutions are as follows:

[0006] On the one hand, the present application relates to a filter element, including: an installation housing, a filter element and a valve assembly. The installation housing is provided with a receiving cavity and a first installation channel communicating with the receiving cavity; the filter element is installed in the receiving cavity and is spaced from the inner wall of the receiving cavity to form a first water flow channel, and a second water flow channel is formed inside the filter element; the valve assembly is arranged in the first installation channel, and the valve assembly can move relative to the first installation channel to have a first state of opening the first water flow channel and the second water flow channel and a second state of closing the first water flow channel and the second water flow channel.

[0007] The technical solutions are further described below:

[0008] In one embodiment, the valve assembly is connected to the filter element. When the valve assembly is in the first state, the valve assembly moves relative to the first installation channel under an external force to form a third water flow channel communicating with the first water flow channel between the valve assembly and the first installation channel, and a fourth water flow channel communicating with the second water flow channel is formed inside the valve assembly; when the valve assembly is in the second state, the external force is withdrawn and the valve assembly resets and blocks the first water flow channel and the second water flow channel.

[0009] In one embodiment, an elastic reset member is further included. The elastic reset member abuts between the valve assembly and the filter element. The valve assembly is movable relative to the first installation channel. When the valve assembly is in the first state, the valve assembly is stressed and moves relative to the first installation channel so that the valve assembly is separated from the inner wall of the first installation channel to form the third water flow channel. When the valve assembly is in the second state, the elastic reset member resets and drives the valve assembly to move to be in sealing fit with the first installation channel to block the first water flow channel.

[0010] In one embodiment, a first seal is further included. The first seal is disposed between the valve assembly and the first installation channel.

[0011] When the valve assembly is in the first state, the valve assembly moves under stress to separate the first seal from the valve assembly or the inner wall of the first installation channel to form the third water flow channel.

[0012] When the valve assembly is in the second state, the elastic reset member resets and drives the valve assembly to move relative to the first installation channel. The valve assembly is in sealing fit with the first installation channel through the first seal to block the first water flow channel.

[0013] In one embodiment, the valve assembly includes a first switch member and a second switch member. The first switch member is movably disposed in the first installation channel. A first sealing portion is provided on the outer wall of the first switch member. The first switch member is provided with a second installation channel. One end of the second switch member is movably inserted through the second installation channel. The other end of the second switch member is connected to the filter element through the elastic reset member. A second sealing portion is provided on the outer wall of the second switch member.

[0014] When the valve assembly is in the first state, the first switch member is stressed and moves relative to the first installation channel so that the first switch member and the inner wall of the first installation channel form the third water flow channel, and the second switch member is stressed and moves relative to the first switch member so that the second switch member and the inner wall of the second installation channel form the fourth water flow channel.

[0015] When the valve assembly is in the second state, the elastic reset member resets and drives the second switch member to move so that the second sealing portion is in sealing fit with the inner wall of the second installation channel to block the second water flow channel, and the second sealing portion drives the first switch member to move so that the first sealing portion is in sealing fit with the inner wall of the third water flow channel to block the first water flow channel.

[0016] In one embodiment, a third sealing portion is formed on the inner wall of the first installation channel, and a fourth sealing portion is formed on the inner wall of the second installation channel;

[0017] When the valve assembly is in the first state, the first sealing portion is separated from the third sealing portion to form the third water flow channel, and the second sealing portion is separated from the fourth sealing portion to form the second water flow channel;

[0018] When the valve assembly is in the second state, the elastic reset member resets and drives the second switch member to move so that the second sealing portion is in sealing cooperation with the fourth sealing portion to block the second water flow channel, and the second sealing portion drives the fourth sealing portion to move so that the first sealing portion is in sealing cooperation with the third sealing portion to block the first water flow channel.

[0019] In one embodiment, a second sealing member is further included, and the second sealing member is disposed between the second switch member and the inner wall of the second installation channel;

[0020] When the valve assembly is in the first state, the second switch member moves and separates the second sealing member from the second installation channel or the second switch member;

[0021] When the valve assembly is in the second state, the elastic reset member resets and drives the second switch member to move so that the second switch member is in sealing cooperation with the second installation channel member through the second sealing member.

[0022] In one embodiment, the first sealing portion is a first stepped portion, the second sealing portion is a first protrusion, the third sealing portion is a second stepped portion that is limited and in sealing cooperation with the first stepped portion, and the fourth sealing portion is a third stepped portion that is limited and in sealing cooperation with the first protrusion.

[0023] In one embodiment, the first switch member includes a first section and a second section. The cross-sectional area of the first section is smaller than that of the second section. The first section and the second section are connected and a first stepped portion is formed between the first section and the second section. The first section is provided with a first section channel, and the second section is provided with a second section channel. The cross-sectional area of the first section channel is smaller than that of the second section channel. The first section channel and the second section channel communicate to form the second installation channel. The second section channel is closer to the filter element than the first section channel. A third stepped portion is formed between the inner wall of the first section channel and the inner wall of the second section channel.

[0024] In one embodiment, the first installation channel includes a third section channel and a fourth section channel. The cross-sectional area of the third section channel is smaller than that of the fourth section channel. The fourth section channel is closer to the filter element than the third section channel. A second step portion is formed between the inner walls of the third section channel and the fourth section channel.

[0025] In one embodiment, the filter element includes a first filter body and a first installation component. The first filter body is installed in the accommodation cavity through the first installation component. The first installation component is provided with a first water outlet. The first filter body and the inner wall of the accommodation cavity form the first water flow channel. The first filter body is formed with the second water flow channel. The second water flow channel can communicate with the fourth water flow channel through the first water outlet. The elastic resetting member abuts between the other end of the second switching member and the first installation component.

[0026] In one embodiment, the first installation component includes a first installation member. One end of the first filter body is connected to the first installation member. The first installation member is provided with the first water outlet. The elastic resetting member abuts between the other end of the second switching member and the first installation member.

[0027] In one embodiment, the first installation member is provided with a first installation portion. The first installation portion is formed with a first installation groove. The elastic resetting member is arranged in the first installation groove.

[0028] In one embodiment, a third sealing member is further included. The other end of the second switching member is provided with a first connecting portion and a second connecting portion. The first connecting portion is formed with a second installation groove. The second connecting portion is arranged in the second installation groove and connected to the elastic resetting member. The first installation portion extends into the second installation groove and the third sealing member is arranged between the outer wall of the first installation portion and the inner wall of the second installation groove; or the first connecting portion extends into the first installation groove and the third sealing member is arranged between the inner wall of the first installation groove and the outer wall of the first connecting portion.

[0029] In one embodiment, a fourth seal is further included. The first mounting member is provided with a second mounting portion, the second mounting portion is provided with a third mounting groove, the first mounting portion is disposed in the third mounting groove, a connection channel is formed between the inner wall of the first mounting portion and the third mounting groove, and the connection channel is communicated with the first water outlet. When the valve assembly is in the first state, the fourth water flow channel is communicated with the second water flow channel through the connection channel and the first water outlet; the fourth seal is disposed between the inner wall of the second mounting channel and the outer wall of the second mounting portion or the fourth seal is disposed between the outer wall of the first switch member and the inner wall of the connection channel.

[0030] On the other hand, the present application further relates to a water purifier including the filter element in any of the above embodiments.

[0031] In one embodiment, a connector is further included. The connector is provided with a second water inlet channel and a second water outlet channel which are spaced apart. The connector enables the valve assembly to have the first state and the second state by squeezing the valve assembly and then canceling the squeezing of the valve assembly.

[0032] When the valve assembly is in the first state, the second water inlet channel is communicated with the first water flow channel, and the second water outlet channel is communicated with the second water flow channel.

[0033] When the valve assembly is in the second state, the valve assembly blocks the first water flow channel and the second water flow channel.

[0034] When the above filter element and water purifier are in use, the valve assembly can be driven to move to open the first water flow channel and the second water flow channel. The first water flow channel can be a raw water channel, and the second water flow channel can be a pure water channel. Raw water can enter the first water flow channel, and then the pure water obtained after the raw water is filtered by the filter element enters the second water flow channel and is discharged, realizing the normal filtering function of the filter element; when the filter element needs to be replaced, the external force applied to the valve assembly is canceled. At this time, the valve assembly blocks the first water flow channel and at the same time the valve assembly blocks the second water flow channel. Furthermore, the water in the accommodation cavity cannot be discharged, thereby avoiding the water remaining inside the filter element from spilling out. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0037] In addition, the drawings are not drawn to a scale of 1:1, and the relative sizes of the various components are only drawn exemplarily in the drawings and not necessarily to the true scale.

[0038] Figure 1 It is a schematic structural diagram of a filter element in an embodiment;

[0039] Figure 2 It is a schematic structural diagram of the filter element in the first state in an embodiment;

[0040] Figure 3 It is a schematic structural diagram of the filter element in the second state in an embodiment;

[0041] Figure 4 It is a schematic structural diagram of a filter element in another embodiment;

[0042] Figure 5 It is a schematic structural diagram of the filter element in the first state in another embodiment;

[0043] Figure 6 It is a schematic structural diagram of the filter element in the second state in another embodiment;

[0044] Figure 7 It is a schematic assembly diagram of the filter element and the machine head in an embodiment;

[0045] Figure 8 For Figure 7 a partial enlarged schematic diagram of C in

[0046] Figure 9 It is a schematic structural diagram of the machine head in an embodiment. Detailed Embodiments

[0047] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0050] The present application provides a filter element 10 and a water purifier. When replacing the filter element 10, the filter element 10 and the water purifier can prevent the water remaining inside from spilling out.

[0051] The filter element 10 in one embodiment includes an installation housing 100 and a filtering member. The installation housing 100 is provided with a receiving cavity 110 and a first installation channel 120 communicating with the receiving cavity 110. The filtering member is installed in the receiving cavity 110. Among them, the filtering member can be a reverse osmosis membrane filtering member, etc., and the installation housing 100 can be an installation bottle, etc.

[0052] Please refer to Figure 1 , Figure 2 and Figure 3 , a first water flow channel 130 is formed by spacing the filtering member from the inner wall of the receiving cavity 110. A second water flow channel 140 is provided inside the filtering member. The first water flow channel 130 and the second water flow channel 140 are in communication with each other. This can be achieved by filtering methods in the prior art and will not be elaborated here one by one.

[0053] Specifically, the first water flow channel 130 can be a raw water channel, and the second water flow channel 140 can be a pure water channel; or the first water flow channel 130 can be a pure water channel, and the second water flow channel 140 can be a raw water channel.

[0054] Further, the filter element 10 further includes a valve assembly 300. The valve assembly 300 is disposed in the first installation channel 120. The valve assembly 300 is used to open or block the first water flow channel 130 and the second water flow channel 140. Thus, by switching the state of the valve assembly 300, the water in the accommodation cavity 110 of the filter element 10 will not be discharged when the filter element 10 is replaced, and at the same time, when the filter element 10 is working, the water inside and outside the accommodation cavity 110 flows normally. Based on the above description, it can be known that the valve assembly 300 has a first state and a second state. Refer to Figure 2 When the valve assembly 300 is in the first state, the valve assembly 300 can move relative to the first installation channel 120 to open the first water flow channel 130 and the second water flow channel 140; Refer to Figure 3 When the valve assembly 300 is in the second state, the valve assembly 300 can move relative to the first installation channel 120 to block the first water flow channel 130 and the second water flow channel 140.

[0055] In order to enable the valve assembly 300 to have the above two states, please refer to Figure 2 In one embodiment, the valve assembly 300 is connected to the filter element. When the valve assembly 300 is in the first state, the valve assembly 300 is forced to move relative to the first installation channel 120, so that a third water flow channel 360 communicating with the first water flow channel 130 is formed between the valve assembly 300 and the first installation channel 120. At this time, the first water flow channel 130 can be the raw water channel, and the second water flow channel 140 can be the pure water channel. The raw water can enter the first water flow channel 130 along the third water flow channel 360 and then be filtered by the filter element. At the same time, when the valve assembly 300 is stressed, a fourth water flow channel 350 communicating with the second water flow channel 140 is formed in itself. At this time, the pure water filtered by the filter element can enter the fourth water flow channel 350 along the second water flow channel 140 and be discharged. At this time, the valve assembly 300 is in a normal open state.

[0056] Among them, the force-applying part for applying an external force to the valve assembly 300 can be manual force application or force application through the connector 20 for installing the filter element 10 in the water purifier.

[0057] Please refer to Figure 3 When the valve assembly 300 is in the second state, the external force is withdrawn, and the valve assembly 300 resets and blocks the first water flow channel 130 and the second water flow channel 140. At this time, when the filter element 10 is replaced, the water in the first water flow channel 130 and the second water flow channel 140 will not be discharged to the outside.

[0058] The withdrawal of the external force can be manual withdrawal of the external force or separation of the connector 20 for installing the filter element 10 in the water purifier from the filter element 10, thereby withdrawing the external force.

[0059] Please refer toFigure 2 and Figure 3 The filter element 10 further includes an elastic reset member 500. The elastic reset member 500 abuts between the valve assembly 300 and the filter element. The valve assembly 300 is movable relative to the first installation channel 120. When the valve assembly 300 is subjected to force, the valve assembly 300 can squeeze the elastic reset member 500 while moving. When the external force is removed, the elastic reset member 500 can drive the valve assembly 300 to reset. Specifically, the elastic reset member 500 can be a spring or the like.

[0060] Please refer to Figure 1 When the valve assembly 300 is in the first state, the valve assembly 300 is subjected to force and squeezes the elastic reset member 500. At this time, the valve assembly 300 moves relative to the first installation channel 120, and the valve assembly 300 is separated from the inner wall of the first installation channel 120 to form a third water flow channel 360. When the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the valve assembly 300 to move to sealingly cooperate with the first installation channel 120 to block the first water flow channel 130. At this time, the valve assembly 300 can dynamically switch between the first working state and the second working state.

[0061] The purpose of the valve assembly 300 sealingly cooperating with the first installation channel 120 is to block the first water flow channel 130 to prevent raw water from being discharged to the outside from the first water flow channel 130. The way for the valve assembly 300 to sealingly cooperate with the first installation channel 120 can be that the outer wall of the valve assembly 300 fits with the inner wall of the first installation channel 120; or, the valve assembly 300 is provided with a convex portion, and the inner wall of the first installation channel 120 is provided with a groove, and the valve assembly 300 is sealingly matched with the first installation channel 120 through the insertion cooperation of the convex portion and the groove to block the first water flow channel 130.

[0062] Please refer to Figure 3 In one embodiment, the filter element 10 further includes a first seal 410. The first seal 410 is disposed between the valve assembly 300 and the first installation channel 120. The first seal 410 can be disposed on the valve assembly 300 or on the inner wall of the first installation channel 120, but as long as the valve assembly 300 can sealingly cooperate with the first installation channel 120 through the first seal 410.

[0063] Please refer to Figure 2, when the valve assembly 300 is in the first state, the valve assembly 300 is forced to move to separate the first seal 410 from the inner wall of the valve assembly 300 or the first installation passage 120 to form a third water flow passage 360. Among them, when the first seal 410 is arranged on the valve assembly 300, the valve assembly 300 drives the first seal 410 to separate from the inner wall of the first installation passage 120 to form a third water flow passage 360. When the first seal 410 is arranged on the inner wall of the first installation passage 120, the valve assembly 300 moves to separate from the first seal 410. Furthermore, the valve assembly 300 can form a third water flow passage 360 with the inner wall of the first installation passage 120.

[0064] Please refer to Figure 3 , when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the valve assembly 300 to move relative to the first installation passage 120. The valve assembly 300 is sealingly fitted with the first installation passage 120 through the first seal 410 to block the first water flow passage 130. Among them, when the first seal 410 is arranged on the valve assembly 300, the valve assembly 300 drives the first seal 410 to be sealingly fitted with the inner wall of the first installation passage 120 to block the first water flow passage 130. When the first seal 410 is arranged on the inner wall of the first installation passage 120, the valve assembly 300 moves to be sealingly fitted with the first seal 410. Furthermore, the valve assembly 300 can block the first water flow passage 130.

[0065] Please refer to Figure 2 and Figure 3 , this figure shows a schematic structural diagram of the filter element 10 and shows the structure of the valve assembly 300 in one of the embodiments.

[0066] Please refer to Figure 2 and Figure 3 , the valve assembly 300 includes a first switch member 310 and a second switch member 320. The first switch member 310 is movably arranged in the first installation passage 120. The first switch member 310 is provided with a second installation passage 314. One end of the second switch member 320 is movably inserted through the second installation passage 314. The elastic reset member 500 abuts between the other end of the second switch member 320 and the filter element.

[0067] Please refer to Figure 2 , the outer wall of the first switch member 310 is provided with a first sealing portion 312, and the outer wall of the second switch member 320 is provided with a second sealing portion 322. The first sealing portion 312 is in the shape of a first step, and the second sealing portion 322 is a first protrusion.

[0068] When the valve assembly 300 is in the first state, the first switch member 310 is stressed and moves relative to the first installation channel 120 so that the first switch member 310 and the inner wall of the first installation channel 120 form a third water flow channel 360, and the second switch member 320 is stressed and moves relative to the first switch member 310 so that the second switch member 320 and the inner wall of the second installation channel 314 form a fourth water flow channel 350.

[0069] Specifically, the first seal 410 is disposed on the outer wall of the first switch member 310. A groove is provided on the outer wall of the first switch member 310, and the first seal 410 is disposed in the groove. The first seal 410 may be a sealing ring.

[0070] Among them, the implementation method for the first switch member 310 to be stressed and move relative to the first installation channel 120 and for the second switch member 320 and the first switch member 310 to move relative to each other may be to drive the first switch member 310 and the second switch member 320 with a certain time difference. For example, first drive the second switch member 320 to move so that the second switch member 320 and the first switch member 310 move relative to each other to form a fourth water flow channel 350 between the second switch member 320 and the second installation channel 314, and then drive the first switch member 310 to move so that a third water flow channel 360 is formed between the first switch member 310 and the first installation channel 120; or drive the first switch member 310 and the second switch member 320 simultaneously, but the driving force can be changed to achieve that the first switch member 310 is stressed and moves relative to the first installation channel 120 and the second switch member 320 and the first switch member 310 move relative to each other.

[0071] Please refer to Figure 3 , when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the second switch member 320 to move so that the second sealing portion 322 is in sealing fit with the inner wall of the second installation channel 314 to block the second water flow channel 140, and the second sealing portion 322 drives the first switch member 310 to move so that the first sealing portion 312 is in sealing fit with the inner wall of the third water flow channel 360 to block the first water flow channel 130. Among them, in the second state, the second sealing portion 322 and the first switch member 310 are in limit fit, so that the second sealing portion 322 can drive the first switch member 310 to move.

[0072] Specifically in this embodiment, refer to Figure 2 、 3, an external force is applied to the second switch member 320 and the first switch member 310. The second switch member 320 and the first switch member 310 move along the axial direction of the accommodation cavity 110, and the elastic reset member 500 is compressed, so that a third water flow channel 360 is formed between the first switch member 310 and the inner wall of the first installation channel 120, and a fourth water flow channel 350 is formed between the second switch member 320 and the inner wall of the second installation channel 314. The valve assembly 300 is in the first state. When the external force is released, the elastic reset member 500 applies a reverse elastic force, driving the second switch member 320 to move in the reverse direction, and then driving the first switch member 310 to move in the reverse direction, so that the fourth water flow channel 350 and the third water flow channel 360 are blocked.

[0073] To achieve the sealing fit between the first sealing portion 312 and the inner wall of the first installation channel 120, and the sealing fit between the second sealing portion 322 and the inner wall of the first installation channel 120, please refer to Figure 2 and Figure 3 , in one embodiment, a third sealing portion 126 is formed on the inner wall of the first installation channel 120, and a fourth sealing portion 316 is formed on the inner wall of the second installation channel 314; when the valve assembly 300 is in the first state, the first sealing portion 312 is separated from the inner wall of the third sealing portion 126 to form a third water flow channel 360, and the second sealing portion 322 is separated from the fourth sealing portion 316 to form a second water flow channel 140; when the valve assembly 300 is in the second state, the elastic reset member 500 is reset and drives the second switch member 320 to move so that the second sealing portion 322 is in sealing fit with the fourth sealing portion 316 to cut off the conduction between the fourth water flow channel 350 and the second water flow channel 140, and the second sealing portion 322 drives the fourth sealing portion 316 to move so that the first sealing portion 312 is in sealing fit with the third sealing portion 126 to block the first water flow channel 130.

[0074] Please refer to Figure 2 , the third sealing portion 126 may be a second stepped portion, and the stepped surface of the first stepped portion and the stepped surface of the second stepped portion are in sealing fit. The fourth sealing portion 316 may be a third stepped portion, and the stepped surface of the third stepped portion and the surface of the first protrusion are in sealing fit and limiting fit.

[0075] The first switch member 310 includes a first section and a second section. The cross-sectional area of the first section is smaller than that of the second section. The first section and the second section are connected and a first step portion is formed between the first section and the second section. Since the third sealing portion 126 is a second step portion, on the one hand, the second step portion plays a role in limiting cooperation with the first step portion, and on the other hand, it is in sealing cooperation with the first step portion to block the first water flow channel 130. At the same time, precisely because the first switch member 310 is formed with a first step portion and the inner wall of the first installation channel 120 is formed with a second step portion, there is a sudden change in the inner diameter of the first installation channel 120. Thus, when the first switch member 310 moves, a third water flow channel 360 can be formed with the inner wall of the first installation channel 120.

[0076] The first section is provided with a first-section channel, and the second section is provided with a second-section channel. The cross-sectional area of the first-section channel is smaller than that of the second-section channel. The first-section channel and the second-section channel are communicated to form a second installation channel 314. The second-section channel is closer to the filter element relative to the first-section channel. A third step portion is formed between the inner wall of the first-section channel and the inner wall of the second-section channel. At this time, on the one hand, the third step portion is in sealing cooperation and limiting cooperation with the surface of the first protrusion; on the other hand, there is a sudden change in the aperture of the second installation channel 314 from the direction of the first-section channel to the second-section channel. Thus, when the second switch member 320 moves, a fourth water flow channel 350 can be formed with the inner wall of the second installation channel 314.

[0077] Similarly, in one embodiment, the first installation channel 120 includes a third-section channel and a fourth-section channel. The cross-sectional area of the third-section channel is smaller than that of the fourth-section channel. The fourth-section channel is closer to the filter element relative to the third-section channel. A second step portion is formed between the inner wall of the third-section channel and the inner wall of the fourth-section channel. In this way, on the one hand, through the limiting cooperation and sealing cooperation of the second step portion with the first step portion; on the other hand, there is a sudden change in the aperture of the first installation channel 120 from the direction of the third-section channel to the fourth-section channel. Thus, when the first switch member 310 moves, a third water flow channel 360 can be formed with the inner wall of the first installation channel 120.

[0078] Please refer to Figure 2 and Figure 3 , the filter element 10 further includes a second sealing member 420. The second sealing member 420 is disposed between the second switch member 320 and the inner wall of the second installation channel 314. Among them, the first sealing member 410 can be disposed on the inner wall of the second installation channel 314 or on the second switch member 320, but as long as the second sealing member 420 can be in sealing cooperation with the second installation channel 314 through the second sealing member 420.

[0079] Please refer to Figure 2, when the second installation channel 314 is in the first state, the second switch member 320 moves and separates the second seal member 420 from the second installation channel 314 or the second switch member 320 to connect the fourth water flow channel 350 and the second water flow channel 140; wherein, when the second seal member 420 is disposed on the second switch member 320, the second switch member 320 drives the second seal member 420 to separate from the inner wall of the second installation channel 314 to form the fourth water flow channel 350, and when the second seal member 420 is disposed on the inner wall of the second installation channel 314, the second switch member 320 moves and separates from the second seal member 420, and further, the second switch member 320 can form the fourth water flow channel 350 with the inner wall of the second installation channel 314.

[0080] Please refer to Figure 3 , when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the second switch member 320 to move so that the second switch member 320 is in sealing cooperation with the second installation channel 314 through the second seal member 420 to cut off the fourth water flow channel 350 and connect the second water flow channel 140. Wherein, when the second seal member 420 is disposed on the second switch member 320, the second switch member 320 drives the second seal member 420 to be in sealing cooperation with the inner wall of the second installation channel 314, and when the second seal member 420 is disposed on the inner wall of the second installation channel 314, the second switch member 320 moves and is in sealing cooperation with the second seal member 420.

[0081] Specifically, the second seal member 420 is disposed on the second switch member 320, the second switch member 320 is provided with a groove, the second seal member 420 is disposed in the groove, and the second seal member 420 can be a sealing ring.

[0082] Please refer to Figure 2 and Figure 3 , the filter element includes a first filter body 220 and a first installation assembly. The first filter body 220 is installed in the accommodation cavity 110 through the first installation assembly. The first installation assembly is provided with a first water outlet 2122. The first filter body 220 and the inner wall of the accommodation cavity 110 form a first water flow channel 130. The first filter body 220 is formed with a second water flow channel 140. The second water flow channel 140 can be communicated with the fourth water flow channel 350 through the first water outlet 2122. The elastic reset member 500 abuts between the valve assembly 300 and the first installation assembly. Specifically, the first filter body 220 can be a reverse osmosis membrane element or a filter material of other materials; the elastic reset member 500 can be a spring or an elastic element such as a rubber member.

[0083] Please refer to Figure 2 and Figure 3 , in this embodiment, the elastic reset member 500 abuts between the other end of the second switch member 320 and the first installation assembly.

[0084] Further, the first mounting assembly includes a first mounting member 212 and a second mounting member 214. The first mounting member 212 is provided with a first water outlet 2122. One end of the first filter body 220 is connected to the first mounting member 212, and the other end of the first filter body 220 is mounted on the bottom wall of the accommodation cavity 110 through the second mounting member 214. In this way, the first filter element 10 body can be more firmly fixed in the accommodation cavity 110.

[0085] Please refer to Figure 2 and Figure 3 , the elastic reset member 500 abuts between the other end of the second switch member 320 and the first mounting member 212. Further, the first mounting member 212 is provided with a first mounting portion 2124, and a first mounting groove 21242 is formed in the first mounting portion 2124. The elastic reset member 500 is disposed in the first mounting groove 21242. At this time, in addition to the function of mounting the elastic reset member 500, the first mounting groove 21242 can also limit the movement path of the elastic reset member 500. Specifically, the first mounting portion 2124 may be a cylindrical mounting protrusion, and the first mounting groove 21242 is formed on the mounting protrusion.

[0086] Further, please refer to Figure 2 and Figure 3 , the filter element 10 further includes a third seal 430. The other end of the second switch member 320 is provided with a first connecting portion 324 and a second connecting portion 326. A second mounting groove 3242 is formed in the first connecting portion 324. The second connecting portion 326 is disposed in the second mounting groove 3242 and connected to the elastic reset member 500. The first mounting portion 2124 extends into the second mounting groove 3242, and the third seal 430 is disposed between the outer wall of the first mounting portion 2124 and the inner wall of the second mounting groove 3242; in this way, on the one hand, the elastic reset member 500 is disposed in the first mounting groove 21242, and at the same time, the first mounting groove 21242 extends into the second mounting groove 3242. The outer wall of the first mounting portion 2124 and the inner wall of the second mounting groove 3242 are sealed by the third seal 430, so as to ensure that the elastic reset member 500 located in the first mounting groove 21242 will not be infiltrated by water, thereby protecting the elastic reset member 500. Specifically, the third seal 430 may be a sealing ring. During installation, a groove may be formed on the outer wall of the first mounting portion 2124, and the third seal 430 is disposed in the groove.

[0087] Please refer to Figure 2 and Figure 3, in another embodiment, the first connecting portion 324 extends into the first installation groove 21242, and the third seal 430 is disposed between the inner wall of the first installation groove 21242 and the outer wall of the first connecting portion 324. Thus, the inner wall of the first installation groove 21242 and the outer wall of the first connecting portion 324 can also be sealed by the third seal 430, thereby ensuring that the elastic reset member 500 located in the first installation groove 21242 will not infiltrate water and protecting the elastic reset member 500.

[0088] Please refer to Figure 2 and Figure 3 , the first mounting member 212 is provided with a second mounting portion 2126, the second mounting portion 2126 is provided with a third mounting groove 21262, the second mounting portion 2126 can be a cylindrical mounting protrusion, and the third mounting groove 21262 is formed in the cylindrical mounting protrusion; the first mounting portion 2124 is disposed in the third mounting groove 21262, and a connection channel is formed between the first mounting portion 2124 and the inner wall of the third mounting groove 21262, and the connection channel is communicated with the first water outlet 2122. When the valve assembly 300 is in the first state, the fourth water flow channel 350 is communicated with the second water flow channel 140 through the connection channel and the first water outlet 2122. At this time, the filtered pure water can be discharged to the connection channel through the first water outlet 2122 and then discharged through the fourth water flow channel 350;

[0089] Please refer to Figure 2 and Figure 3 , the filter element 10 further includes a fourth seal 440, and the fourth seal 440 is disposed between the inner wall of the second installation channel 314 and the outer wall of the second mounting portion 2126. At this time, it can be ensured that there is a certain seal between the connection channel and the fourth water flow channel 350 when they are communicated, avoiding water leakage. When installing the fourth seal 440, a groove can be formed in the outer wall of the second mounting portion 2126, and the fourth seal 440 is disposed in the groove.

[0090] In another embodiment, the fourth seal 440 is disposed between the outer wall of the first switch member 310 and the inner wall of the connection channel. At this time, it can also be ensured that there is a certain seal between the connection channel and the fourth water flow channel 350 when they are communicated, avoiding water leakage.

[0091] In addition, please refer to Figures 4 to 6 , this figure shows another structure of the filter element 10, and the functions mentioned in the above embodiments can also be realized through this structure.

[0092] Please refer to Figure 5 and Figure 6, in this embodiment, the valve assembly 300 includes a third switch member 330 and a fourth switch member 340. The third switch member 330 is movably disposed within the first installation passage 120. The elastic reset member 500 abuts between the third switch member 330 and the filter element. The third switch member 330 is provided with a third installation passage 332. One end of the fourth switch member 340 is inserted into the third installation passage 332, and the other end of the fourth switch member 340 is connected to the filter element. In this embodiment, the fourth switch member 340 is fixed, and the movable one is the third switch member 330.

[0093] One end of the fourth switch member 340 being inserted into the third installation passage 332 may be that part of the structure of the fourth switch member 340 is disposed within the third installation passage 332, or the fourth switch member 340 passes through the third installation passage 332, as long as a fourth water flow passage 350 is formed between the fourth switch member 340 and the third installation passage 332.

[0094] Please refer to Figure 5 , when the valve assembly 300 is in the first state, the third switch member 330 is forced to move so that the third switch member 330 moves relative to the first installation passage 120 and the fourth switch member 340 to form a third water flow passage 360 between the third switch member 330 and the inner wall of the third installation passage 332, and a fourth water flow passage 350 is formed between the fourth switch member 340 and the third installation passage 332. At this time, in this embodiment, the formation methods of the fourth water flow passage 350 and the third water flow passage 360 are different from those in the previous embodiments. In this embodiment, it is only necessary to drive the third switch member 330 to move relative to the first installation passage 120 and the fourth switch member 340 simultaneously.

[0095] Please refer to Figure 6 , when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the third switch member 330 to move to a position where the third switch member 330 is in sealing cooperation with the inner wall of the first installation passage 120 to block the first water flow passage 130, and at the same time the third switch member 330 is in sealing cooperation with the fourth switch member 340 to block the second water flow passage 140. Similarly, the methods of blocking the first water flow passage 130 and the second water flow passage 140 are also different from those in the previous embodiments. In this embodiment, by driving the third switch member 330 to reset and move by the elastic reset member 500 and simultaneously being in sealing cooperation with the inner wall of the first installation passage 120 and the fourth switch member 340.

[0096] Next, specific embodiments will be combined to elaborate on the method of driving the third switch member 330 to move to form the third water flow passage 360 and the fourth water flow passage 350, and blocking the first water flow passage 130 and the second water flow passage 140.

[0097] Please refer to Figure 5, a fifth sealing portion 334 is provided on the outer wall of the third switching member 330, and a sixth sealing portion 336 is provided on the inner wall of the third installation passage 332;

[0098] Please refer to Figure 5 , when the valve assembly 300 is in the first state, the third switching member 330 is stressed and moves relative to the first installation passage 120 so that the third switching member 330 and the inner wall of the first installation passage 120 form a third water flow passage 360, and the third switching member 330 is stressed and moves relative to the fourth switching member 340 so that the inner wall of the third installation passage 332 and the fourth switching member 340 form a fourth water flow passage 350; at this time, raw water can enter the first water flow passage 130 along the third water flow passage 360, and then pass through the filter element for filtration. The purified water after passing through the filter element can enter the fourth water flow passage 350 along the second water flow passage 140 and be discharged. At this time, the valve assembly 300 is in a normal open state.

[0099] Please refer to Figure 6 , when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the third switching member 330 to move so that the fifth sealing portion 334 is in sealing cooperation with the inner wall of the first installation passage 120 to block the first water flow passage 130, and the sixth sealing portion 336 is in sealing cooperation with the fourth switching member 340 to block the second water flow passage 140. Thus, when the filter element 10 needs to be replaced, only an external force needs to be withdrawn to make the elastic reset member 500 reset. At this time, the first water flow passage 130 and the second water flow passage 140 are blocked, and the water in the first water flow passage 130 and the second water flow passage 140 will not be discharged to the outside.

[0100] Specifically, the ways of applying and withdrawing the external force can be the same as those in the above embodiments.

[0101] Further, the fifth sealing portion 334 is a fourth stepped portion, the sixth sealing portion 336 is a sealing surface, the first installation passage 120 is provided with a fifth stepped portion that is limited and in sealing cooperation with the fourth stepped portion, and the fourth switching member 340 is provided with a second protrusion that is in sealing cooperation with the sealing surface. The sixth sealing portion 336 can be formed by bending the third switching member 330 in a direction away from the fourth stepped portion.

[0102] Specifically, the forming methods of the fourth stepped portion, the sealing surface and the fifth stepped portion are the same as those in the foregoing embodiments. The setting of the fourth stepped portion and the fifth stepped portion can make the third switching member 330 form a third water flow passage 360 by being misaligned when moving relative to the first installation passage 120; the setting of the fifth stepped portion and the second protrusion can make the third installation passage 332 form a fourth water flow passage 350 when moving relative to the fourth switching member 340.

[0103] When the raw water flows along the third water flow channel 360 to the first water flow channel 130, a certain degree of sealing must be ensured to prevent the raw water from flowing to other positions.

[0104] Please refer to Figure 5 , the filter element 10 further includes a fifth seal 450 and a sixth seal 460. The fifth seal 450 is disposed between the inner wall of the third switch member 330 and the first installation channel 120, and the sixth seal 460 is disposed between the inner wall of the third installation channel 332 and the fourth switch member 340.

[0105] Specifically, when the fifth seal 450 is disposed on the third switch member 330 and the sixth seal 460 is disposed on the fourth switch member 340, when the valve assembly 300 is in the first state, the third switch member 330 is forced to move, and the third switch member 330 drives the fifth seal 450 to move away from the inner wall of the third installation channel 332, and the third switch member 330 separates from the sixth seal 460 while moving; when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the third switch member 330 to move. At this time, the third switch member 330 drives the fifth seal 450 to move, so that the third switch member 330 is in sealing cooperation with the first installation channel 120 through the fifth seal 450, and at the same time, the inner wall of the third installation channel 332 is in sealing cooperation with the fourth switch member 340 through the sixth seal 460.

[0106] In another embodiment, when the fifth seal 450 is disposed on the inner wall of the first installation channel 120 and the sixth seal 460 is disposed on the third switch member 330, when the valve assembly 300 is in the first state, the third switch member 330 is forced to move away from the fifth seal 450, and the third switch member 330 drives the sixth seal 460 to separate from the fourth switch member 340 while moving; when the valve assembly 300 is in the second state, the elastic reset member 500 resets and drives the third switch member 330 to move. At this time, the third switch member 330 is in sealing cooperation with the first installation channel 120 through the fifth seal 450, and at the same time, the third installation channel 332 drives the sixth seal 460 to move and is in sealing cooperation with the fourth switch member 340 through the sixth seal 460.

[0107] In other embodiments, the fifth seal 450 and the sixth seal 460 may also be arranged in other combinations, which will not be elaborated one by one here. It only needs to satisfy that when the valve assembly 300 is in the first state, the third switch member 330 is forced to move so that the fifth seal 450 is separated from the third switch member 330 or from the inner wall of the first installation channel 120, and the sixth seal 460 is separated from the inner wall of the second installation channel 314 or from the fourth switch member 340; when the valve assembly 300 is in the second state, the elastic reset member 500 is reset and drives the third switch member 330 to move so that the third switch member 330 is in sealing cooperation with the first installation channel 120 through the fifth seal 450, and the inner wall of the third installation channel 332 is in sealing cooperation with the fourth switch member 340 through the sixth seal 460.

[0108] Specifically, the fifth seal 450 is arranged on the outer wall of the third switch member 330. A groove is provided on the outer wall of the third switch member 330, and the fifth seal 450 is arranged in the groove. The fifth seal 450 can be a sealing ring. The sixth seal 460 is arranged on the outer wall of the fourth switch member 340. A groove is provided on the outer wall of the fourth switch member 340, and the sixth seal 460 is arranged in the groove. The sixth seal 460 can be a sealing ring.

[0109] Similarly, please refer to Figure 5 and Figure 6 , in the deformed filter element 10, the filter element includes a second filter body 240 and a second installation assembly. The second filter body 240 is installed in the accommodation cavity 110 through the second installation assembly. The second installation assembly is provided with a second water outlet 2322. The second filter body 240 and the inner wall of the accommodation cavity 110 form a first water flow channel 130. The second filter body 240 forms a second water flow channel 140. When the valve assembly 300 is in the second installation state, the second water flow channel 140 can be communicated with the fourth water flow channel 350 through the second water outlet 2322. The elastic reset member 500 abuts between the other end of the third switch member 330 and the installation assembly. The other end of the fourth switch member 340 is fixedly arranged on the second installation assembly. Specifically, the first filter body 220 can be a reverse osmosis membrane element or a filter material made of other materials; the elastic reset member 500 can be a spring or an elastic element such as a rubber member.

[0110] Please refer to Figure 5 and Figure 6, in one embodiment, the second mounting assembly includes a third mounting member 232 and a fourth mounting member 234. The third mounting member 232 is provided with a second water outlet 2322. One end of the second filter body 240 is connected to the third mounting member 232, and the other end of the second filter body 240 is mounted on the bottom wall of the accommodating cavity 110 through the fourth mounting member 234. In this way, the second filter body 240 can be more firmly fixed in the accommodating cavity 110.

[0111] Please refer to Figure 5 and Figure 6 , the elastic reset member 500 abuts between the third switch member 330 and the third mounting member 232. The third mounting member 232 is provided with a third mounting portion 2324, and a fourth mounting groove 23242 is formed in the third mounting portion 2324. The elastic reset member 500 is disposed in the fourth mounting groove 23242. At this time, on the one hand, the fourth mounting groove 23242 serves to mount the elastic reset member 500, and on the other hand, it can also limit the movement path of the elastic reset member 500. Specifically, the third mounting portion 2324 may be a cylindrical protrusion, and the fourth mounting groove 23242 is formed on the cylindrical protrusion.

[0112] Please refer to Figure 5 and Figure 6 , further, the side wall of the third mounting portion 2324 encloses to form a fifth mounting groove 23244. The fifth mounting groove 23244 is disposed in the area enclosed by the fourth mounting groove 23242. Specifically, the third mounting portion 2324 may be a hollow cylindrical structure. The cylindrical structure is provided with the fourth mounting groove 23242, and a fifth mounting groove 23244 is further formed inside the cylindrical structure.

[0113] Please refer to Figure 5 and Figure 6 , further, the fifth mounting groove 23244 communicates with the second water outlet 2322. When the valve assembly 300 is in the second mounting state, the fourth water flow channel 350 communicates with the second water flow channel 140 through the fifth mounting groove 23244 and the second water outlet 2322. The other end of the fourth switch member 340 is inserted into the fifth mounting groove 23244.

[0114] Please refer to Figure 5 and Figure 6 , when the fourth water flow channel 350 flows through the fifth mounting groove 23244 and the second water outlet 2322 to communicate with the second water flow channel 140, it is necessary to ensure that water does not flow along the fifth mounting groove 23244 to the fourth mounting groove 23242 and thus damage the elastic reset member 500.

[0115] Please refer to Figure 5 and Figure 6In one embodiment, the filter element 10 further includes a seventh sealing member 470, and the seventh sealing member 470 is disposed between the inner wall of the fourth mounting groove 23242 and the third switch member 330. Thus, the fourth mounting groove 23242 and the third switch member 330 are sealed by the seventh sealing member 470, so that the elastic reset member 500 can be protected. Specifically, a groove is provided on the inner wall of the fourth mounting groove 23242, and the seventh sealing member 470 is disposed in the groove. The seventh sealing member 470 can be a sealing ring.

[0116] In addition, the present application also relates to a water purifier, comprising the filter element 10 in any of the above embodiments.

[0117] When the filter element 10 and the water purifier are in use, the filter element 10 is connected to the connector 20, so that the third water flow channel 360 is connected to the second water inlet channel 600 in the connector 20, and the fourth water flow channel 350 is connected to the second water outlet channel 700 of the connector 20. The connector 20 can apply an external force to the valve assembly 300 or other components can apply an external force to the valve assembly 300. At this time, the first water flow channel 130 and the third water flow channel 360 are connected. The second water flow channel 140 and the fourth water flow channel 350 are connected, and the raw water can enter the first water flow channel 130 through the second water inlet channel 600 and the third water flow channel 360, and then the pure water obtained after the raw water is filtered by the filter element enters the second water flow channel 140, and then is discharged through the fourth water flow channel 350 and the second water outlet channel 700; further, when the filter element 10 needs to be replaced, the external force applied to the valve assembly 300 is canceled, at this time, the third water flow channel 360 is cut off from being connected to the first water flow channel 130 and the fourth water flow channel 350 is cut off and connected to the second water flow channel 140, and then, the water located in the accommodating chamber 110 cannot be discharged, thereby preventing the residual water inside from spilling.

[0118] Furthermore, the water purifier also includes a connecting head 20, which is provided with a second water inlet channel 600 and a second water outlet channel 700 arranged at intervals. The connecting head 20 enables the valve assembly 300 to have a first state and a second state by squeezing the valve assembly 300 and unsqueezing the valve assembly 300; when the valve assembly 300 is in the first state, the second water inlet channel 600 and the first water flow channel 130 are connected, and the second water outlet channel 700 and the second water flow channel 140 are connected; when the valve assembly 300 is in the second state, the valve assembly 300 blocks the first water flow channel 130 and the second water flow channel 140.

[0119] For further information, please refer to Figure 3 The first installation channel 120 includes a first opening 122 and a second opening 124 opposite to each other. The first opening 122 is connected to the accommodating cavity 110. The second switch member 320 is closer to the second opening 124 than the first switch member 310. Please refer toFigures 7 to 9 The connector 20 includes a first squeezing portion 800 and a second squeezing portion 900. The first squeezing portion 800 is used to squeeze the first switch member 310, and the second squeezing portion 900 is used to squeeze the second switch member 320. The first squeezing portion 800 and the second squeezing portion 900 are arranged at intervals along the flow direction of the second water outlet channel 700, and the first squeezing portion 800 and the second squeezing portion 900 are arranged in a radial dislocation in the second water outlet channel 700. The first squeezing portion 800 is closer to the water inlet 710 of the second water outlet channel than the second squeezing portion 900. The height by which the second switch member 320 protrudes relative to the first switch member 310 is greater than the height by which the first squeezing portion 800 protrudes relative to the second squeezing portion 900. Thus, the first squeezing portion 800 and the second squeezing portion 900 can squeeze the first switch member 310 and the second switch member 320 respectively with a certain time difference. The second squeezing portion 900 first drives the second switch member 320 to move, so that the relative movement between the second switch member 320 and the first switch member 310 forms a fourth water flow channel 350 between the second switch member 320 and the second installation channel 314. Then, the first squeezing portion 800 drives the first switch member 310 to move, so that a third water flow channel 360 is formed between the first switch member 310 and the first installation channel 120.

[0120] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0121] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0122] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0123] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0124] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be understood as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A filter element, characterized in that, Comprising: An installation housing, which is provided with a receiving cavity and a first installation channel communicating with the receiving cavity; A filter element, which is installed in the receiving cavity and is spaced from the inner wall of the receiving cavity to form a first water flow channel, and a second water flow channel is formed in the filter element; and A valve assembly, which is arranged in the first installation channel and can move relative to the first installation channel to have a first state of opening the first water flow channel and the second water flow channel and a second state of closing the first water flow channel and the second water flow channel; The valve assembly is connected to the filter element; When the valve assembly is in the first state, the valve assembly moves relative to the first installation channel under an external force to form a third water flow channel communicating with the first water flow channel between the valve assembly and the first installation channel, and a fourth water flow channel communicating with the second water flow channel is formed in the valve assembly; When the valve assembly is in the second state, the external force is withdrawn and the valve assembly resets and blocks the first water flow channel and the second water flow channel; The filter element further includes an elastic reset member, which abuts between the valve assembly and the filter element, and the valve assembly can move relative to the first installation channel; When the valve assembly is in the first state, the valve assembly is stressed and moves relative to the first installation channel to separate the valve assembly from the inner wall of the first installation channel to form the third water flow channel; When the valve assembly is in the second state, the elastic reset member resets and drives the valve assembly to move to be in sealing cooperation with the first installation channel to block the first water flow channel; The valve assembly includes a first switch member and a second switch member. The first switch member is movably arranged in the first installation channel. A first sealing portion is provided on the outer wall of the first switch member. The first switch member is provided with a second installation channel. One end of the second switch member is movably inserted through the second installation channel. The other end of the second switch member is connected to the filter element through the elastic reset member. A second sealing portion is provided on the outer wall of the second switch member; A third sealing portion is formed on the inner wall of the first installation channel, and a fourth sealing portion is formed on the inner wall of the second installation channel; When the valve assembly is in the first state, the first sealing portion is separated from the third sealing portion to form the third water flow channel, and the second sealing portion is separated from the fourth sealing portion to form the second water flow channel; When the valve assembly is in the second state, the elastic reset member resets and drives the second switch member to move so that the second sealing portion is in sealing cooperation with the fourth sealing portion to block the second water flow channel, and the second sealing portion drives the fourth sealing portion to move so that the first sealing portion is in sealing cooperation with the third sealing portion to block the first water flow channel; The first sealing portion is a first stepped portion, the second sealing portion is a first protrusion, the third sealing portion is a second stepped portion that is limited and sealingly engaged with the first stepped portion, and the fourth sealing portion is a third stepped portion that is limited and sealingly engaged with the first protrusion; The first installation channel includes a third channel section and a fourth channel section. The cross-sectional area of the third channel section is smaller than that of the fourth channel section. The fourth channel section is closer to the filter element than the third channel section. A second stepped portion is formed between the inner walls of the third channel section and the fourth channel section.

2. The filter element according to claim 1, wherein It further includes a first sealing member disposed between the valve assembly and the first installation channel; When the valve assembly is in the first state, the valve assembly is forced to move to separate the first sealing member from the inner wall of the valve assembly or the first installation channel to form the third water flow channel; When the valve assembly is in the second state, the elastic reset member resets and drives the valve assembly to move relative to the first installation channel. The valve assembly is sealingly engaged with the first installation channel through the first sealing member to block the first water flow channel.

3. The filter element according to claim 1, characterized in that, It further includes a second sealing member disposed between the second switching member and the inner wall of the second installation channel; When the valve assembly is in the first state, the second switching member moves to separate the second sealing member from the second installation channel or the second switching member; When the valve assembly is in the second state, the elastic reset member resets and drives the second switching member to move so that the second switching member is sealingly engaged with the second installation channel through the second sealing member.

4. The filter element according to claim 1, characterized in that, The first switching member includes a first section and a second section. The cross-sectional area of the first section is smaller than that of the second section. The first section and the second section are connected and a first stepped portion is formed between the first section and the second section. The first section is provided with a first channel section, and the second section is provided with a second channel section. The cross-sectional area of the first channel section is smaller than that of the second channel section. The first channel section and the second channel section communicate to form the second installation channel. The second channel section is closer to the filter element than the first channel section. A third stepped portion is formed between the inner walls of the first channel section and the second channel section.

5. The filter element according to any one of claims 1 to 4, characterized in that, The filter element includes a first filter body and a first installation assembly. The first filter body is installed in the accommodation cavity through the first installation assembly. The first installation assembly is provided with a first water outlet. The first filter body and the inner wall of the accommodation cavity form the first water flow channel. The first filter body forms the second water flow channel. The second water flow channel can communicate with the fourth water flow channel through the first water outlet. The elastic reset member abuts between the other end of the second switching member and the first installation assembly.

6. The filter element according to claim 5, characterized in that The first installation component includes a first installation member, one end of the first filter body is connected to the first installation member, the first installation member is provided with the first water outlet, and the elastic reset member abuts between the other end of the second switch member and the first installation member.

7. The filter element according to claim 6, characterized in that, The first installation member is provided with a first installation portion, the first installation portion forms a first installation groove, and the elastic reset member is disposed in the first installation groove.

8. The filter element according to claim 7, wherein It further includes a third sealing member. The other end of the second switch member is provided with a first connection portion and a second connection portion. The first connection portion forms a second installation groove. The second connection portion is disposed in the second installation groove and is connected to the elastic reset member. The first installation portion extends into the second installation groove and the third sealing member is disposed between the outer wall of the first installation portion and the inner wall of the second installation groove; or the first connection portion extends into the first installation groove, and the third sealing member is disposed between the inner wall of the first installation groove and the outer wall of the first connection portion.

9. The filter element according to claim 8, wherein, It further includes a fourth sealing member. The first installation member is provided with a second installation portion, the second installation portion is provided with a third installation groove, the first installation portion is disposed in the third installation groove, a connection channel is formed between the first installation portion and the inner wall of the third installation groove, and the connection channel is communicated with the first water outlet. When the valve assembly is in the first state, the fourth water flow channel is communicated with the second water flow channel through the connection channel and the first water outlet; the fourth sealing member is disposed between the inner wall of the second installation channel and the outer wall of the second installation portion or the fourth sealing member is disposed between the outer wall of the first switch member and the inner wall of the connection channel.

10. A water purifier, characterized in that, It includes the filter element according to any one of claims 1 to 9.

11. The water purifier according to claim 10, wherein, It further includes a connector. The connector is provided with a second water inlet channel and a second water outlet channel which are spaced apart. The connector enables the valve assembly to have the first state and the second state by squeezing the valve assembly and then canceling the squeezing of the valve assembly. When the valve assembly is in the first state, the second water inlet channel and the first water flow channel are conducted, and the second water outlet channel and the second water flow channel are conducted. When the valve assembly is in the second state, the valve assembly blocks the first water flow channel and the second water flow channel.

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