Filter element, filter element assembly with same and water heater assembly

Abstract

The filter element comprises a shell and a water sealing structure, a plurality of water inlets and a water outlet are formed in the shell, the water inlets are located on the peripheral side of the water outlet, a containing cavity communicated with the water inlets and the water outlet is formed in the shell, the containing cavity is used for containing a filter material, and the water sealing structure is used for sealing the filter material. The water sealing structure is arranged in the shell and used for closing the water inlet, and the water sealing structure is pushed to open the water inlet when the water inlet pressure at the water inlet reaches the preset pressure. According to the filter element disclosed by the invention, the water sealing structure is used for closing the water inlet, so that water stored in the shell can be well prevented from spilling out through the water inlet, the trouble caused by the spilled water to a user can be well avoided, the use experience of the filter element is favorably improved, and in addition, the use experience of the filter element is improved. When the water inlet pressure at the water inlet reaches the preset pressure, the water sealing structure is pushed to open the water inlet, so that the water sealing structure is opened through the inlet water flow, a part for opening the water sealing structure can be omitted, and the structure of the filter element is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of filter components, and in particular to a filter element and a filter element component and a water heater component having the same. Background Art

[0002] As people's living standards improve, their pursuit of quality of life also increases. For example, more and more consumers begin to pay attention to the health of water quality. In the related technology, purification components such as filter elements are usually used to optimize water quality, and the filter elements are usually replaceable to ensure the purification effect of the filter elements. However, when the filter elements in the related technology are replaced, the residual liquid in the filter elements will be spilled, which increases the trouble of cleaning for users and affects the user experience. Summary of the invention

[0003] The present invention provides a filter element, which has the advantages of being able to prevent water stored in a shell from spilling out through a water inlet and having a simple structure.

[0004] The invention also provides a filter element assembly having the filter element.

[0005] The invention also provides a water heater assembly having the filter element assembly.

[0006] According to an embodiment of the present invention, the filter element assembly includes: a shell, on which a water inlet and a water outlet are formed, the water inlet is provided with a plurality of water inlets arranged at intervals along the circumference of the filter element and located on the outer peripheral side of the water outlet, the shell has a containing cavity connected to the water inlet and the water outlet, the containing cavity is used to contain filter material; a water sealing structure, the water sealing structure is arranged in the shell, the water sealing structure is used to close the water inlet, and when the water inlet pressure at the water inlet reaches a preset pressure, the water sealing structure is pushed to open the water inlet.

[0007] According to the filter element assembly of the embodiment of the present invention, the water sealing structure is used to close the water inlet, which can better prevent the water stored in the shell from spilling out through the water inlet, thereby better avoiding the trouble caused to the user by the spilled water, which is beneficial to improving the use experience of the filter element, and when the water inlet pressure at the water inlet reaches the preset pressure, the water sealing structure is pushed to open the water inlet, so that the water sealing structure is opened by the incoming water flow, thereby eliminating the components for opening the water sealing structure, which is beneficial to simplifying the structure of the filter element.

[0008] According to some embodiments of the present invention, the water sealing structure includes: a water stop pad, which is arranged opposite to the water inlet; a water stop spring, which is connected to the water stop pad, and the water stop spring is used to push the water stop pad to close the water inlet, and when the water inlet pressure at the water inlet reaches a preset pressure, the water stop pad is pushed to compress the water stop spring to open the water inlet.

[0009] According to some embodiments of the present invention, the diameter of the water-stop spring increases in a direction away from the water-stop pad.

[0010] According to some embodiments of the present invention, a positioning groove is formed on the end surface of the water-stop pad facing the water-stop spring, the positioning groove is annular, and one end of the water-stop spring facing the water-stop pad is inserted into the positioning groove.

[0011] According to some embodiments of the present invention, the water sealing structure further includes: a spring support member, which is arranged in the shell and located on the side of the water stop pad away from the water inlet, and the axial ends of the water stop spring are respectively connected to the water stop pad and the spring support member.

[0012] According to some embodiments of the present invention, a plurality of limiting ribs arranged at intervals along the outer circumference of the water-stop spring are formed on the end surface of the spring support member facing the water-stop pad, and the limiting ribs abut against the outer circumferential wall of one end of the water-stop spring facing the spring support member.

[0013] According to some embodiments of the present invention, the filter element further includes: a center tube, which is arranged in the shell, a water hole is formed on the peripheral wall of the center tube, a central channel is formed in the center tube, and the water outlet end of the central channel is connected with the water outlet; a filter material cover, which is arranged in the shell and is located on the side of the center tube facing the water inlet, the filter material cover, the outer wall surface of the center tube and the inner wall surface of the shell cooperate to define the containing cavity, and the containing cavity is connected with the center channel through the water hole.

[0014] According to some embodiments of the present invention, the filter material cover forms a through hole penetrating the filter material cover, the through hole communicates with the water inlet and the containing cavity, and a first filter screen is disposed in the through hole.

[0015] According to some embodiments of the present invention, the filter element further includes: a first filter material box, the first filter material box is arranged in the shell, the holding cavity is formed in the first filter material box, a water passage is defined between the outer peripheral wall of the first filter material box and the inner peripheral wall of the shell, the water passage is connected to the water inlet, and the water passage is connected to the water outlet through the holding cavity.

[0016] According to some embodiments of the present invention, the first filter material box includes: a first box body, the first box body is cylindrical with its opening facing the water outlet, and a water hole connecting the water passage and the holding chamber is formed on the outer peripheral wall of the first box body; a first box cover, the first box cover is arranged on the opening end of the first box body, the first box cover and the first box body jointly define the holding chamber, and an intermediate channel connecting the holding chamber and the water outlet is formed on the first box cover; a second filter screen, the second filter screen is sleeved on the outer peripheral side of the first box body and at least covers the water hole.

[0017] According to some embodiments of the present invention, the filter element also includes a second filter material box, the containing cavity is formed in the second filter material box, the containing cavity is used to contain slow-release filter material, a slow-release hole is formed on the second filter material box, and the water inlet and the water outlet are connected to the containing cavity through the slow-release hole.

[0018] According to some embodiments of the present invention, the second filter material box includes: a second box body, which is cylindrical with its opening facing the water outlet; a second box cover, which is detachably covered on the opening end of the second box body, and the second box body and the second box cover define the containing cavity, and the slow-release hole is formed on the second box cover.

[0019] According to some embodiments of the present invention, an outer peripheral wall of the second filter box is spaced apart from an inner peripheral wall of the housing.

[0020] According to some embodiments of the present invention, the shell includes: a shell body; a cover body, which is detachably covered on the open end of the shell body, and the water inlet and the water outlet are both arranged on the cover body.

[0021] According to some embodiments of the present invention, the cover body includes a cover body and a water outlet column, the water outlet column extends along the axial direction of the filter element, a water outlet channel connected to the water outlet interface is formed in the water outlet column, the water outlet end of the water outlet column constitutes the water outlet, a water inlet channel connected to the water inlet and located on the outer peripheral side of the water outlet column is defined between the water outlet column and the cover body, the water sealing structure is arranged in the water inlet channel, and the containing chamber is located on the side of the water outlet channel away from the water outlet.

[0022] According to some embodiments of the present invention, a one-way valve is provided in the water outlet channel for unidirectional conduction in a direction close to the water outlet.

[0023] According to the filter element assembly of the embodiment of the present invention, the socket is formed with a water inlet interface and a water outlet interface; the above-mentioned filter element is detachably arranged on the socket, the water inlet is suitable for communicating with the water inlet interface, and the water outlet is suitable for communicating with the water outlet interface.

[0024] According to the filter element assembly of the embodiment of the present invention, the water sealing structure is used to close the water inlet, which can better prevent the water stored in the shell from spilling out through the water inlet after the filter element is removed from the socket, thereby better avoiding the trouble caused by the spilled water to the user, which is beneficial to improving the use experience of the filter element, and when the water inlet pressure at the water inlet reaches the preset pressure, the water sealing structure is pushed to open the water inlet, so that the water sealing structure is opened by the incoming water flow, thereby eliminating the components for opening the water sealing structure, making the structure of the filter element simple, which is beneficial to simplifying the structure of the filter element assembly.

[0025] According to some embodiments of the present invention, a water inlet hole and a water outlet hole are further formed in the socket, the water inlet hole is suitable for connecting the water inlet interface and the water inlet, and the water outlet hole is suitable for connecting the water outlet interface and the water outlet, and a valve assembly is provided in the socket, and the valve assembly has a conducting state and a shut-off state; wherein, after the filter element is assembled with the socket, the valve assembly is in the conducting state, the water inlet hole is connected with the water inlet interface, and the water outlet hole is connected with the water outlet interface; after the filter element is separated from the socket, the valve assembly is in the shut-off state, the water inlet hole is separated from the water inlet interface, and the water outlet hole is separated from the water outlet interface.

[0026] According to some embodiments of the present invention, in the on state, the water inlet interface is isolated from the water outlet interface; in the off state, the water inlet interface is connected to the water outlet interface.

[0027] According to some embodiments of the present invention, a first installation cavity, a second installation cavity and a connecting cavity are formed in the connecting seat, the first installation cavity and the second installation cavity are separated from each other, the valve assembly includes a first stop valve and a second stop valve, the first installation cavity is provided with a first stop valve, the first stop valve includes a first valve seat and a first valve core, a first connecting channel connected to the water inlet interface is formed in the first valve seat, the first valve core is movably arranged in the first connecting channel between a first position and a second position, a second stop valve is provided in the second installation cavity, the second stop valve includes a second valve seat and a second valve core, a second connecting channel connected to the water outlet interface is formed in the second valve seat, and the second valve core is movably arranged in the first connecting channel between a first position and a second position The second communicating channel is movably arranged between the positions; wherein, when the valve assembly is in the conducting state, the first valve core is in the first position and the second valve core is in the third position, the first communicating channel connects the water inlet interface and the water inlet hole, the second communicating channel connects the water outlet interface and the water outlet hole, and the first communicating channel and the second communicating channel are both isolated from the communicating cavity; when the valve assembly is in the cut-off state, the first valve core is in the second position and the second valve core is in the fourth position, the first communicating channel is isolated from the water inlet hole, the second communicating channel is isolated from the water outlet hole, and the first communicating channel and the second communicating channel are connected through the communicating cavity.

[0028] According to the water heater assembly of the embodiment of the present invention, the water heater and the above-mentioned filter element assembly, the filter element assembly is connected to the water heater, and the filter element assembly is used to process water flow.

[0029] According to the water heater assembly of the embodiment of the present invention, the water sealing structure is used to close the water inlet, which can better prevent the water stored in the shell from spilling out through the water inlet after the filter element is removed from the socket, thereby better avoiding the trouble caused by the spilled water to the user, which is beneficial to improving the use experience of the filter element, and when the water inlet pressure at the water inlet reaches the preset pressure, the water sealing structure is pushed to open the water inlet, so that the water sealing structure is opened by the incoming water flow, thereby eliminating the components for opening the water sealing structure, making the structure of the filter element simple, which is beneficial to simplifying the structure of the filter element assembly and the water heater assembly.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of a filter element and a receiving seat of a filter element assembly according to an embodiment of the present invention when the filter element is separated;

[0032] Figure 2is a top view of a filter element according to an embodiment of the present invention;

[0033] Figure 3 is a bottom side view of a socket of a filter element assembly according to an embodiment of the present invention;

[0034] Figure 4 is a bottom side view of a water stop pad of a filter element according to an embodiment of the present invention;

[0035] Figure 5 is a front view of a water stop spring of a filter element according to an embodiment of the present invention;

[0036] Figure 6 is an exploded cross-sectional view of a filter element assembly according to Embodiment 1 of the present invention;

[0037] Figure 7 is a cross-sectional view of the filter element and the receiving seat of the filter element assembly according to the first embodiment of the present invention when the filter element is separated;

[0038] Figure 8 is a cross-sectional view of a filter material cover of a filter element assembly according to Embodiment 1 of the present invention;

[0039] Fig. 9 is a cross-sectional view of the filter element and the socket of the filter element assembly according to the first embodiment of the present invention when assembled;

[0040] Fig.10 is a top view of a filter material cover of a filter element assembly according to Embodiment 1 of the present invention;

[0041] Fig.11 is an exploded cross-sectional view of a filter element assembly according to Embodiment 2 of the present invention;

[0042] Fig.12 is a cross-sectional view of a filter element and a receiving seat of a filter element assembly according to a second embodiment of the present invention when the filter element is separated;

[0043] Fig.13 is a top view of a first box cover of a filter element assembly according to a second embodiment of the present invention;

[0044] Fig.14 is a cross-sectional view of the filter element and the socket of the filter element assembly according to the second embodiment of the present invention when assembled;

[0045] Fig.15 is a cross-sectional view of a first box cover and a second filter screen of a filter element assembly according to a second embodiment of the present invention;

[0046] Fig.16 is an exploded cross-sectional view of a filter element assembly according to Embodiment 3 of the present invention;

[0047] Fig.17 is a cross-sectional view of the filter element and the receiving seat of the filter element assembly according to the third embodiment of the present invention when the filter element is separated;

[0048] Fig.18 is a cross-sectional view of the filter element and the socket of the filter element assembly according to the third embodiment of the present invention when assembled;

[0049] Fig.19 is an exploded view of a second filter material box of a filter element assembly according to Embodiment 3 of the present invention;

[0050] Fig. 20 is a cross-sectional view of a second filter material box of a filter element assembly according to Embodiment 3 of the present invention;

[0051] Fig.21 is a schematic diagram of a filter element and a receiving seat of a filter element assembly according to a fourth embodiment of the present invention when the filter element is separated;

[0052] Fig. 22 is a cross-sectional view of a seat of a filter element assembly according to a fourth embodiment of the present invention along a radial direction;

[0053] Fig.23 is a partial cross-sectional view of the filter element and the receiving seat of the filter element assembly according to the fourth embodiment of the present invention when being assembled;

[0054] Fig.24 is a cross-sectional view of a socket of a filter element assembly according to a fourth embodiment of the present invention along the axial direction;

[0055] Fig.25 is a cross-sectional view of a first stop valve (second stop valve) of a filter element assembly according to a fourth embodiment of the present invention, wherein the valve assembly is in a cut-off state;

[0056] Fig.26 is a cross-sectional view of a first stop valve (second stop valve) of a filter element assembly according to a fourth embodiment of the present invention, wherein the valve assembly is in a conducting state;

[0057] Fig. 27 is a schematic diagram of a pre-filter element assembly of a water heater assembly and a water heater according to an embodiment of the present invention;

[0058] Fig.28 is a schematic diagram of a pre-filter element assembly and a water heater of a water heater assembly according to another embodiment of the present invention;

[0059] Fig.29 is a schematic diagram of a post-filter element assembly and a water heater of a water heater assembly according to an embodiment of the present invention;

[0060] Fig.30 is a schematic diagram of a post-filter element assembly and a water heater of a water heater assembly according to another embodiment of the present invention;

[0061] Fig.31is a schematic diagram of a pre-filter element assembly, a post-filter element assembly and a water heater of a water heater assembly according to an embodiment of the present invention;

[0062] Fig.32 is a schematic diagram of a pre-filter element assembly, a post-filter element assembly and a water heater of a water heater assembly according to another embodiment of the present invention;

[0063] Fig.33 is a schematic diagram of the layout of a pre-filter element assembly and a water heater of a water heater assembly according to an embodiment of the present invention;

[0064] Fig.34 is a schematic diagram of the layout of a pre-filter element assembly, a water heater and a mixing valve of a water heater assembly according to an embodiment of the present invention;

[0065] Fig.35 is a schematic diagram of the layout of a pre-filter element assembly, a water heater and a mixing valve of a water heater assembly according to another embodiment of the present invention;

[0066] Fig.36 is a schematic diagram of the layout of a post-filter element assembly and a water heater of a water heater assembly according to an embodiment of the present invention;

[0067] Fig.37 is a schematic diagram of the layout of a post-filter element assembly, a water heater and a mixing valve of a water heater assembly according to an embodiment of the present invention;

[0068] Fig.38 is a schematic diagram of the layout of a post-filter element assembly, a water heater and a mixing valve of a water heater assembly according to another embodiment of the present invention;

[0069] Fig.39 is a schematic diagram of the layout of a pre-filter element assembly, a post-filter element assembly and a water heater of a water heater assembly according to an embodiment of the present invention;

[0070] Fig.40 is a schematic diagram of the layout of a pre-filter element assembly, a post-filter element assembly, a water heater and a mixing valve of a water heater assembly according to an embodiment of the present invention;

[0071] Fig.41 is a schematic diagram of the layout of a pre-filter element assembly, a post-filter element assembly, a water heater and a mixing valve of a water heater assembly according to another embodiment of the present invention;

[0072] Fig.42 is a schematic diagram of the layout of a pre-filter element assembly, a post-filter element assembly, a water heater and a mixing valve of a water heater assembly according to another embodiment of the present invention;

[0073] Fig.43It is a schematic layout diagram of a pre-filter element assembly, a post-filter element assembly, a water heater and a mixing valve of a water heater assembly according to another embodiment of the present invention.

[0074] Reference numerals:

[0075] Water heater assembly 1000;

[0076] Filter element assembly 100; front filter element assembly 100a; rear filter element assembly 100b;

[0077] Filter element 10; containing chamber 10a;

[0078] Shell 11; water inlet 111; water outlet 112; snap-fit ​​groove 113; shell body 114; cover body 115; cover body 1151; water outlet column 1152; water outlet channel 1153; water inlet channel 1154; dissolving and mixing chamber 116; sliding rib 117; fixing convex rib 118; water passage 119;

[0079] Water sealing structure 12; water stop pad 121; positioning groove 1211; water stop spring 122; spring main body 1221; first matching part 1222; second matching part 1223; spring support member 123; limiting convex rib 124;

[0080] Central tube 131; water hole 1311; central channel 1312; tube body 1313; support structure 1314; filter material cover 132; through hole 1321; material cover body 1322; connecting part 1323; assembly groove 1324; connecting channel 1325; first filter screen 133;

[0081] First filter material box 14; first box body 141; water hole 1411; first box cover 142; fixing part 1421; middle channel 1422; second filter screen 143;

[0082] Second filter material box 15; slow-release hole 151; second box body 152; second box cover 153; supporting rib 154;

[0083] One-way valve 16;

[0084] A first sealing ring 171; a second sealing ring 172; a third sealing ring 173; a fourth sealing ring 174; a fifth sealing ring 175; a sixth sealing ring 176; a seventh sealing ring 177; an eighth sealing ring 178;

[0085] Seat 20; water inlet interface 211; water outlet interface 212; water inlet hole 213; water outlet hole 214; slide 22; valve assembly 23; first stop valve 231; first valve seat 2311; first valve core 2312; first communication channel 2313; first return spring 2314; second stop valve 232; second valve seat 2321; second valve core 2322; second communication channel 2323; second return spring 2324; first installation cavity 24; second installation cavity 25; communication cavity 26;

[0086] Water heater 200 ; housing 210 ; heat exchange component 220 ; exchange inlet 230 ; exchange outlet 240 ; water mixing valve 300 . DETAILED DESCRIPTION

[0087] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0088] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific processes and examples of materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0089] The filter element 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0090] like Figure 1-Figure 20 As shown, the filter element 10 according to an embodiment of the present invention includes: a shell 11 and a water sealing structure 12, a water inlet 111 and a water outlet 112 are formed on the shell 11, and the water inlet 111 is provided with a plurality of water inlets 111 arranged at intervals along the circumference of the filter element 10 and located on the outer peripheral side of the water outlet 112. In other words, a plurality of water inlets 111 are arranged around the water outlet 112. Thus, water can flow into the shell 11 through the plurality of water inlets 111, which can better increase the water intake of the filter element 10 and help improve the purification amount of the filter element 10. In addition, the water inlet 111 and the water outlet 112 can make full use of the space on the shell 11, and the layout of the water inlet 111 and the water outlet 112 is compact.

[0091] Furthermore, the housing 11 has a holding chamber 10a in communication with the water inlet 111 and the water outlet 112, and the holding chamber 10a is used to hold filter material. That is, a communicating water flow channel can be formed between the water inlet 111 and the holding chamber 10a, so that external water can enter the holding chamber 10a through the water inlet 111, and the water flow is purified by the contact between the filter material and the water flow. At the same time, a communicating water flow channel can be formed between the holding chamber 10a and the water outlet 112, so that the purified water flow can be discharged from the filter element 10 through the water outlet 112, thereby achieving purification treatment of the water flow passing through the filter element 10.

[0092] In the related art, when the filter element is replaced, the water in the filter element will spill out, and the spilled water may cause the ground to be slippery and cause the user to slip, or wet the user's clothes and cause the user to feel uncomfortable, etc., and the user needs to clean up the spilled water. The water sealing structure 12 of the present application is arranged in the housing 11, and the water sealing structure 12 is used to close the water inlet 111, so that the water sealing structure 12 can better prevent the water in the housing 11 from spilling out through the water inlet 111, thereby better avoiding the trouble caused by the spilled water to the user, which is conducive to improving the user experience of the filter element 10.

[0093] When the water inlet pressure at the water inlet 111 reaches a preset pressure, the water sealing structure 12 is pushed to open the water inlet 111. In other words, the water sealing structure 12 is opened by the water flow of the water inlet 111, and there is no need to set up an additional device for opening the water sealing structure 12, which can simplify the structure of the filter element 10. At the same time, when the water inlet pressure at the water inlet 111 is less than the preset pressure, the water sealing structure 12 can remain in the state of closing the water inlet 111, thereby better preventing the water stored in the housing 11 from spilling out through the water inlet 111. Specifically, during the use of the filter element 10, when the water flow in the waterway connected to the upstream side of the filter element 10 flows toward the water inlet 111, if the filter element 10 is installed on the socket 20 so that the socket 20 can discharge water to the water inlet 111 of the filter element 10, the water inlet pressure at the water inlet 111 increases accordingly. After the water inlet pressure at the water inlet 111 reaches a preset pressure, the water sealing interface is flushed open, and the water flows into the internal cavity of the shell 11 through the water inlet 111 for purification. The purified water can be discharged from the shell 11 through the water outlet 112 and flow to the waterway connected to the downstream of the filter element 10 for user use. When the water inlet 111 of the filter element 10 is cut off from the water channel on the upstream side, when replacing or cleaning the filter element 10, the filter element 10 needs to be removed from the socket 20 and other structures, so that the water flow channel between the water channel connected to the upstream side of the filter element 10 and the water inlet 111 is cut off, and there is no water flow at the water inlet 111, so that the water inlet pressure acting on the water sealing structure 12 disappears, so that the water sealing structure 12 can be reset to the state of closing the water inlet 111 under its own action, thereby better avoiding the water stored in the shell 11 from spilling out through the water inlet 111 during the process of replacing or cleaning the filter element 10, thereby better avoiding the trouble caused to the user by the spilled water, which is beneficial to improving the user experience of the filter element 10.

[0094] According to the filter element 10 of the embodiment of the present invention, the water sealing structure 12 is used to close the water inlet 111, which can better prevent the stored water in the shell 11 from spilling out through the water inlet 111, thereby better preventing the inconvenience caused to the user by the spilled water, which is beneficial to improving the use experience of the filter element 10, and when the water inlet pressure at the water inlet 111 reaches a preset pressure, the water sealing structure 12 is pushed to open the water inlet 111, so that the water sealing structure 12 is opened by the incoming water flow, thereby eliminating the components for opening the water sealing structure 12, which is beneficial to simplifying the structure of the filter element 10.

[0095] According to some embodiments of the present invention, the water sealing structure 12 includes: a water stop pad 121 and a water stop spring 122. The water stop pad 121 is arranged opposite to the water inlet 111, and the water stop spring 122 is connected to the water stop pad 121. The water stop spring 122 is used to push the water stop pad 121 to close the water inlet 111. When the water inlet pressure at the water inlet 111 reaches a preset pressure, the water stop pad 121 is pushed to compress the water stop spring 122 to open the water inlet 111. That is to say, when the water sealing structure 12 is not subjected to other external forces, the water stop pad 121 is maintained in the position of closing the water inlet 111 under the push of the water stop spring 122, that is, under the action of the water stop spring 122, the water stop pad 121 has a tendency to move toward the water inlet 111, thereby better preventing the stored water in the shell 11 from spilling out through the water inlet 111, wherein the preset pressure is greater than the thrust of the water stop spring 122 acting on the water stop pad 121 when the water stop pad 121 closes the water inlet 111, so that when the water inlet pressure at the water inlet 111 reaches the preset pressure, the incoming water flow overcomes the pressure of the water stop spring 122 acting on the water stop pad 121, thereby pushing the water stop pad 121 to compress the water stop spring 122 so that the water stop pad 121 is spaced apart from the water inlet 111 to open the water inlet 111, thereby realizing the connection between the external water flow of the filter element 10 and the internal cavity of the shell 11 through the water inlet 111.

[0096] Specifically, the filter element 10 is installed on the socket 20, and the socket 20 is formed with a water inlet interface 211 and a water outlet interface 212. After the filter element 10 is assembled on the socket 20, the water inlet interface 211 is connected with the water inlet 111, so that the water flow entering through the water inlet interface 211 can push the water stop pad 121 to open the water inlet 111 after entering the water inlet 111, and further flow into the internal cavity of the shell 11, and the water outlet 112 is connected with the water outlet interface 212. The water flow entering the internal cavity of the shell 11 passes through the water outlet 112 and the water outlet after being processed by the filter material in the containing cavity 10a. The interface 212 is discharged, thereby ensuring the water quality of the water flow in the waterway on the downstream side of the socket 20, that is, the waterway connected to the water outlet interface 212; when the filter element 10 is separated from the socket 20, the water inlet pressure acting on the water inlet 111 disappears, so that the thrust of the incoming water flow pushing the water stop pad 121 to compress the water stop spring 122 disappears, and the compressed water stop spring 122 recovers its deformation. Under the push of the water stop spring 122, the water stop pad 121 automatically resets to the position of closing the water inlet 111 to prevent the water stored in the shell 11 from spilling out through the water inlet 111 after the filter element 10 is removed from the socket 20. Therefore, the water stop spring 122 can realize the automatic closure of the water inlet 111 after the filter element 10 is removed from the socket 20, and the user does not need to operate the water stop pad 121 separately to close the water inlet 111, which can greatly simplify the operation of the user when replacing the filter element 10.

[0097] In a specific example, when there is no water inlet pressure in the water inlet 111, the pressure of the water stop spring 122 on the water stop pad 121 is set between 0.05Mpa and 0.1Mpa, so as to ensure that the water stop pad 121 has a certain amount of compression when closing the water inlet 111, so as to enhance the blocking effect of the water stop pad 121 on the water inlet 111. At the same time, since the water inlet pressure needs to overcome the pressure of the water stop spring 122 on the water stop pad 121, the pressure of the water stop spring 122 on the water stop pad 121 is set between 0.05Mpa and 0.1Mpa, so as to set the preset pressure lower, so that the water stop pad 121 can be pushed to open the water inlet 111 even when the water inlet pressure is low.

[0098] According to some optional embodiments of the present invention, the water stop pad 121 is a rubber part. It can be understood that the rubber part is relatively soft. Therefore, under the push of the water stop spring 122, the water stop pad 121 can produce a certain deformation after being subjected to the bidirectional extrusion of the water stop spring 122 and the outer peripheral edge of the water inlet 111, so that the water stop pad 121 can fit more closely on the water inlet 111, which is conducive to improving the sealing effect of the water sealing structure 12 on the water inlet 111. In addition, the weight and cost investment of the water stop pad 121 can be well reduced, and it is convenient to flexibly adjust the shape of the water stop pad 121 according to the use requirements, and the applicability is good. For example, the water stop pad 121 can be a silicone rubber part, or an EPDM rubber part, or a nitrile rubber part, or a fluororubber part, etc., and no specific restrictions are made here.

[0099] According to some embodiments of the present invention, the diameter of the water stop spring 122 increases in the direction away from the water stop pad 121. That is, the diameter of the end of the water stop spring 122 away from the water stop pad 121 is greater than the diameter of the end of the water stop pad 121 toward the water stop pad 121, that is, in the direction toward the water stop pad 121, the water stop spring 122 is roughly tower-shaped. As a result, the load of the water stop spring 122 can be better increased, and the volume of the water stop spring 122 can be better reduced to save the installation space occupied by the water stop spring 122, and the water stop spring 122 can be better prevented from swinging in the radial direction, so that the water stop spring 122 can be prevented from driving the water stop pad 121 to produce radial deviation relative to the water inlet 111, that is, to ensure that the water stop pad 121 is kept in a relative position to the water inlet 111, which is conducive to improving the stability of the water stop spring 122 supporting the water stop pad 121 and the blocking effect of the water sealing structure 12 on the water inlet 111.

[0100] According to some embodiments of the present invention, a positioning groove 1211 is formed on the end surface of the water stop pad 121 facing the water stop spring 122, and the positioning groove 1211 is annular, and one end of the water stop spring 122 facing the water stop pad 121 is inserted into the positioning groove 1211. In other words, the water stop pad 121 and the water stop spring 122 are plug-connected through the positioning groove 1211. Therefore, the radial freedom of movement of the end of the water stop spring 122 facing the water stop pad 121 relative to the water stop pad 121 can be better limited by the positioning groove 1211, so that the radial relative position offset between the water stop pad 121 and the water stop spring 122 can be better avoided, and further the radial position offset of the water stop pad 121 relative to the water inlet 111 can be avoided, so that the water stop pad 121 is kept at a position relative to the water inlet 111, which is conducive to improving the blocking effect of the water stop pad 121 on the water inlet 111. In addition, through the cooperation between the positioning groove 1211 and the water-stop spring 122, the contact area between the water-stop pad 121 and the water-stop spring 122 can be increased to ensure the firm connection between the water-stop pad 121 and the water-stop spring 122, and at the same time, the difficulty of positioning the water-stop pad 121 and the water-stop spring 122 during assembly can be reduced, which is conducive to improving the assembly efficiency of the water-sealing structure 12. In a specific example, the water-stop spring 122 and the positioning groove 1211 have an interference fit, which can prevent the water-stop spring 122 from falling out of the positioning groove 1211, so as to further improve the connection stability between the water-stop pad 121 and the water-stop spring 122.

[0101] According to some embodiments of the present invention, the water sealing structure 12 further includes: a spring support 123, the spring support 123 is arranged in the housing 11 and is located on the side of the water stop pad 121 away from the water inlet 111, and the axial ends of the water stop spring 122 are respectively connected to the water stop pad 121 and the spring support 123. In other words, the spring support 123 is arranged in the housing 11 and its position remains fixed, and the spring support 123 is supported on the end of the water stop spring 122 away from the water stop pad 121, so that the position of the water stop spring 122 away from the end of the water stop pad 121 can be ensured to be fixed by the spring support 123, so that the water stop spring 122 can, under the support of the spring support 123, push the water stop pad 121 to move in the direction away from the spring support 123, that is, towards the direction close to the water inlet 111, thereby ensuring the blocking effect of the water stop pad 121 on the water inlet 111.

[0102] Furthermore, a plurality of limiting ribs 124 are formed on the end surface of the spring support 123 facing the water-stop pad 121 and are arranged at intervals along the outer periphery of the water-stop spring 122, and the limiting ribs 124 abut against the outer peripheral wall of the end of the water-stop spring 122 facing the spring support 123. In other words, the end of the water-stop spring 122 facing the spring support 123 can be better fixed by the plurality of limiting ribs 124. In this way, the stability of the connection between the water-stop spring 122 and the spring support 123 can be better improved. At the same time, the radial freedom of movement of one end of the water-stop spring 122 toward the spring support 123 relative to the spring support 123 can be better limited through a plurality of limiting ribs 124, thereby better avoiding the radial relative position offset between the water-stop spring 122 and the spring support 123, and further avoiding the radial position offset of the water-stop pad 121 relative to the water inlet 111 caused by the radial offset of the water-stop spring 122, so as to keep the water-stop pad 121 in a position relative to the water inlet 111, which is conducive to improving the sealing effect of the water-stop pad 121 on the water inlet 111. In addition, the contact area between the water stop spring 122 and the spring support 123 can be increased by a plurality of position limiting ribs 124, so that the water stop spring 122 and the spring support 123 can be firmly connected, and the connection structure between the water stop spring 122 and the spring support 123 is simple, which can effectively reduce the difficulty of assembling the water stop spring 122 and the spring support 123. In a specific example, the water stop spring 122 and the plurality of position limiting ribs 124 are interference fit, which can prevent the water stop spring 122 from coming out of the plurality of position limiting ribs 124, so as to further improve the connection stability between the water stop spring 122 and the spring support 123.

[0103] Optionally, the water stop pad 121 is in a ring shape extending along the circumference of the filter element 10. As a result, the water stop pad 121 can be opposite to multiple water inlets 111 arranged along the circumference of the water outlet 112 at the same time, so as to ensure that the water stop pad 121 can close multiple water inlets 111 at the same time under the push of the water stop spring 122, and at the same time, when the water stop pad 121 is pushed to compress the water stop spring 122, multiple water inlets 111 can be opened at the same time, which can effectively reduce the number of water stop pads 121 and help simplify the water sealing structure 12.

[0104] According to some embodiments of the present invention, the filter element 10 also includes: a central tube 131 and a filter material cover 132, the central tube 131 is arranged in the shell 11, a water hole 1311 is formed on the peripheral wall of the central tube 131, a central channel 1312 is formed in the central tube 131, the water outlet end of the central channel 1312 is connected to the water outlet 112, the filter material cover 132 is arranged in the shell 11 and is located on the side of the central tube 131 facing the water inlet 111, the outer wall surface of the filter material cover 132 and the central tube 131 cooperates with the inner wall surface of the shell 11 to define a containing chamber 10a, and the containing chamber 10a is connected to the central channel 1312 through the water hole 1311.

[0105] That is to say, the water inlet 111 is connected with the water outlet 112 through the holding chamber 10a, the water hole 1311 and the central channel 1312, so that a water flow channel is formed in the filter element 10, which flows through the water inlet 111, the holding chamber 10a, the water hole 1311, the central channel 1312 and the water outlet 112 in sequence. The holding chamber 10a is located on the outer peripheral side of the central channel 1312 and filter material is contained in the holding chamber 10a, so that when the water flows through the holding chamber 10a and flows toward the central channel 1312 through the water hole 1311, it can be purified by the filter material, that is, the water flowing into the central channel 1312 through the water hole 1311 is the purified water flow, and the water flow in the central channel 1312 is finally discharged from the filter element 10 through the water outlet 112, thereby realizing the purification treatment of the water flowing through the filter element 10. In addition, the filter cover 132, the center tube 131 and the shell 11 cooperate to define the containing chamber 10a, which can save the material of the structure containing the filter material while containing the filter material, which is beneficial to simplify the structure of the filter element 10 and reduce the production cost of the filter element 10.

[0106] Among them, the filter material is a resin type, an adsorption type, or a scale-inhibiting type filter material. For example, the filter material can be an adsorption filter material such as PP cotton, activated carbon, etc. The filter material can also be a resin, TAC, ASP, MSAP, etc., which can adsorb and replace anions and cations in water or prevent anions and cations from agglomerating in water, etc., and has the advantages of long life and improved water quality. Among them, the filter material exists in the form of sheets, particles or cotton, which can better avoid the interception effect of the filter material on the waterway.

[0107] In a specific example, the water inlet 111 is provided with a plurality of water inlets arranged at intervals along the circumference of the filter element 10 and located on the outer peripheral side of the water outlet 112. Therefore, by arranging the containing chamber 10a on the outer peripheral side of the central channel 1312, it is convenient for the water inlet 111 to communicate with the containing chamber 10a while facilitating the communication between the central channel 1312 and the water outlet 112, and the layout is reasonable.

[0108] According to some optional embodiments of the present invention, the filter cover 132 forms a through hole 1321 that penetrates the filter cover 132, the through hole 1321 communicates with the water inlet 111 and the holding chamber 10a, and a first filter screen 133 is disposed in the through hole 1321. In other words, a communicating water flow channel can be formed between the water inlet hole 213, the through hole 1321, and the holding chamber 10a, so that water can flow into the holding chamber 10a through the water inlet hole 213 and the through hole 1321, wherein the water flows through the first filter screen 133 when passing through the through hole 1321. Thus, the first filter screen 133 can better intercept impurities such as silt and suspended matter in the water flow entering the holding chamber 10a, thereby better improving the cleanliness of the water flow entering the holding chamber 10a, that is, the first filter screen 133 can achieve preliminary purification of the water flow, and after the water flow enters the holding chamber 10a, the water flow can be purified again through the filter material, so that the water flow enters the filter element 10 through the water inlet 111 and is discharged from the filter element 10 through the water outlet 112. Purification treatment is at least twice by the first filter screen 133 and the filter material, thereby better improving the purification effect of the filter element 10 on the water flow passing through, so as to further improve the cleanliness of the water flow discharged from the filter element 10 through the water outlet 112. In addition, the mesh on the first filter screen 133 is small, so that the first filter screen 133 can better prevent the filter material in the holding chamber 10a from flowing out of the holding chamber 10a through the through hole 1321, that is, the filter material can be better kept in the holding chamber 10a.

[0109] In a specific example, the first filter screen 133 is a stainless steel filter screen, which can improve the durability of the first filter screen 133. The mesh number of the first filter screen 133 is between 30 meshes and 100 meshes. Thus, it is possible to better avoid the mesh number of the first filter screen 133 being too high, resulting in too small mesh openings and affecting the flow resistance of the water flow, and at the same time, it is possible to better avoid the mesh number of the first filter screen 133 being too low, resulting in too large mesh openings and affecting the filtering effect of the first filter screen 133 and the interception effect of the filter material. That is, by controlling the mesh number of the first filter screen 133 between 30 meshes and 100 meshes, the resistance to the flow of water can be reduced while ensuring the filtering effect of the first filter screen 133 and the interception effect of the filter material.

[0110] According to some embodiments of the present invention, it also includes: a first filter material box 14, the first filter material box 14 is arranged in the shell 11, a containing chamber 10a is formed in the first filter material box 14, a water passage 119 is defined between the outer peripheral wall of the first filter material box 14 and the inner peripheral wall of the shell 11, the water passage 119 is connected to the water inlet 111, and the water passage 119 is connected to the water outlet 112 through the containing chamber 10a. That is, the water inlet 111 is connected to the water outlet 112 through the water passage 119 and the holding chamber 10a, so that a water flow channel is formed in the filter element 10, which flows through the water inlet 111, the water passage 119, the holding chamber 10a and the water outlet 112 in sequence. The water passage 119 is located on the outer peripheral side of the holding chamber 10a and the holding chamber 10a contains filter material, so that the water can be purified by the filter element 10 in the process of entering the holding chamber 10a through the water passage 119 and then discharged from the filter element 10 through the water outlet 112, thereby realizing the purification of the water flowing through the filter element 10. In addition, the filter material is contained in the first filter material box 14, so that the filter material can be stably in the holding chamber 10a to purify the water flowing through.

[0111] Among them, the filter material is a resin type, an adsorption type, or a scale-inhibiting type filter material. For example, the filter material can be an adsorption filter material such as PP cotton, activated carbon, etc. The filter material can also be a resin, TAC, ASP, MSAP, etc., which can adsorb and replace anions and cations in water or prevent anions and cations from agglomerating in water, etc., and has the advantages of long life and improved water quality. Among them, the filter material exists in the form of sheets, particles or cotton, which can better avoid the interception effect of the filter material on the waterway.

[0112] In a specific example, the water inlet 111 is provided with a plurality of water inlets 111 arranged at intervals along the circumference of the filter element 10 and located on the outer peripheral side of the water outlet 112. Therefore, by arranging the water passage 119 on the outer peripheral side of the containing chamber 10a, it is convenient for the water inlet 111 to communicate with the water passage 119 and at the same time facilitates the communication between the containing chamber 10a and the water outlet 112, and the layout is reasonable.

[0113] According to some embodiments of the present invention, the first filter material box 14 includes: a first box body 141, a first box cover 142 and a second filter screen 143. The first box body 141 is cylindrical with its opening facing the water outlet 112. A water hole 1411 connecting the water channel 119 and the holding chamber 10a is formed on the outer peripheral wall of the first box body 141. The first box cover 142 is covered on the open end of the first box body 141. The first box cover 142 and the first box body 141 jointly define the holding chamber 10a. An intermediate channel 1422 connecting the holding chamber 10a and the water outlet 112 is formed on the first box cover 142. That is to say, a connected water flow channel is formed between the water inlet 111 and the water outlet 112 through the water hole 1411, the containing chamber 10a and the intermediate channel 1422, so that the water entering the water channel 119 through the water inlet 111 can enter the containing chamber 10a through the water hole 1411 for purification, so as to ensure the purification effect of the filter element 10 on the flowing water, and the purified water flows through the intermediate channel 1422 and finally discharged from the filter element 10 through the water outlet 112 for use by the user.

[0114] The second filter 143 is sleeved on the outer circumference of the first box body 141 and at least covers the water hole 1411. In other words, the second filter 143 is located on the upstream side of the water hole 1411, so that the water in the water passage 119 passes through the second filter 143 when flowing into the containing chamber 10a through the water hole 1411. Thus, the second filter screen 143 can better intercept impurities such as silt and suspended matter in the water flow entering the holding chamber 10a, thereby better improving the cleanliness of the water flow entering the holding chamber 10a, that is, the second filter screen 143 can achieve preliminary purification of the water flow, and after the water flow enters the holding chamber 10a, the water flow can be purified again through the filter material, so that the water flow enters the filter element 10 through the water inlet 111 and is discharged from the filter element 10 through the water outlet 112. The purification effect of the filter element 10 on the water flow passing through can be better improved, so as to further improve the cleanliness of the water flow discharged from the filter element 10 through the water outlet 112. In addition, the mesh on the second filter screen 143 is small, so that the second filter screen 143 can better prevent the filter material in the holding chamber 10a from flowing out of the holding chamber 10a through the water hole 1411, that is, the filter material can be better kept in the holding chamber 10a.

[0115] In a specific example, the second filter screen 143 is a stainless steel filter screen, which can improve the durability of the second filter screen 143, and the mesh number of the second filter screen 143 is between 30 meshes and 100 meshes. Thus, it is possible to better avoid the second filter screen 143 having too high a mesh number, which causes the mesh to be too small, affecting the flow resistance of the water flow, and at the same time, it is possible to better avoid the second filter screen 143 having too low a mesh number, which causes the mesh to be too large, affecting the filtering effect of the second filter screen 143 and the interception effect of the filter material, that is, controlling the mesh number of the second filter screen 143 between 30 meshes and 100 meshes can reduce the resistance to the flow of water while ensuring the filtering effect of the second filter screen 143 and the interception effect of the filter material.

[0116] According to some optional embodiments of the present invention, the second filter screen 143 is connected to the first box cover 142. Thus, the number of parts of the filter box can be reduced and the difficulty of assembling the first filter box 14 can be reduced.

[0117] According to some optional embodiments of the present invention, a plurality of water holes 1411 are provided along the circumference of the filter element 10 and arranged circumferentially. In other words, the water flow in the water passage 119 can enter the containing chamber 10a through the plurality of water holes 1411 on the first box body 141. Thus, the water flow rate from the water passage 119 to the containing chamber 10a can be increased, thereby increasing the flow rate in the filter element 10, which is beneficial to improving the purification amount of the filter element 10.

[0118] According to some embodiments of the present invention, the filter element 10 further includes a second filter material box 15, a holding chamber 10a is formed in the second filter material box 15, the holding chamber 10a is used to hold slow-release filter material, a slow-release hole 151 is formed on the second filter material box 15, and the water inlet 111 and the water outlet 112 are connected to the holding chamber 10a through the slow-release hole 151. That is, when water flows through the filter element 10, part of the water flow entering the housing 11 through the water inlet 111 can flow into the filter material box through the slow-release hole 151, and the slow-release filter material slowly dissolves after contacting the water flow. After the amount of water in the holding chamber 10a reaches the upper limit, the slowly-released and dissolved filter material can be released into the water flow around the slow-release hole 151 along with the water flow, thereby realizing the optimized treatment of the water flow by the slow-release filter material, and the water flow with dissolved filter material can be discharged from the filter element 10 through the water outlet 112 for use by the user.

[0119] Among them, the sustained-release filter material includes a base material and an additive. Specifically, the base material can be a sugar base or a wax base, etc., and the additive can be a solute with a special smell such as lavender or lemon, so that the water flow treated by the filter element assembly 100 has a special smell such as lavender or lemon, thereby improving the user's bathing comfort when the user uses the water flow purified by the filter element assembly 100 for bathing; the additive can also be a hyaluronic acid or other hydrating substance, thereby achieving skin hydration when the user uses the water flow purified by the filter element assembly 100 for bathing; the additive can also be an ascorbic acid or other substance that can remove residual chlorine in water, thereby avoiding symptoms such as skin itching caused by residual chlorine in water when the user uses the water flow purified by the filter element assembly 100 for bathing, so as to improve the user's bathing comfort.

[0120] According to some optional embodiments of the present invention, the second filter material box 15 comprises: a second box body 152 and a second box cover 153, the second box body 152 is in a cylindrical shape with an opening facing the water outlet 112, the second box cover 153 is detachably covered on the open end of the second box body 152, the second box body 152 and the second box cover 153 define a holding chamber 10a, and a slow-release hole 151 is formed on the second box cover 153. Thus, by providing the slow-release hole 151 on the second box cover 153, it is possible to avoid a large amount of slow-release filter material from overflowing through the open mouth of the second box body 152 while ensuring that part of the slow-release filter material can be released into the water flow of the internal cavity of the housing 11 through the slow-release hole 151, thereby avoiding the waste of slow-release filter material while ensuring the purification effect of the water flow, and in addition, by the detachable connection between the second box cover 153 and the second box body 152, it is convenient to remove the second box cover 153 from the second box body 152 to supplement the slow-release filter material, which is conducive to reducing the use cost of the filter element 10.

[0121] According to some optional embodiments of the present invention, the outer peripheral wall of the second filter material box 15 is spaced apart from the inner peripheral wall of the shell 11. Therefore, after the water flows into the internal cavity of the shell 11 through the water inlet 111, the water flows into the gap between the outer peripheral wall of the second filter material box 15 and the inner peripheral wall of the shell 11 under the action of gravity, and as the water level in the shell 11 continues to rise, the water gradually overflows the slow-release hole 151 of the second filter material box 15, wherein part of the water flows into the holding chamber 10a through the slow-release hole 151 to contact and dissolve the slow-release filter material, and after the slow-release filter material in the holding chamber 10a overflows through the slow-release hole 151, the slow-release dissolved filter material can be released in the water flow around the slow-release hole 151 along with the water flow, and as the water level in the shell 11 continues to rise, the water flow dissolved with the slow-release filter material is finally discharged from the filter element 10 through the water outlet 112 for use by the user.

[0122] According to some embodiments of the present invention, the housing 11 includes: a housing body 114 and a cover body 115, and the cover body 115 is detachably covered on the open end of the housing body 114. That is, the housing 11 is a split structure, and the cover body 115 can define the internal cavity of the housing 11 after being covered on the housing body 114, so that the water flow can enter the internal cavity of the housing 11 through the water inlet 111, and be discharged through the water outlet 112 after being processed by the filter material, thereby realizing the purification treatment of the water flow by the filter element 10; the cover body 115 can also be removed from the housing body 114 to facilitate the maintenance of the internal structure of the filter element 10, such as replacing the filter material, cleaning the internal cavity of the housing 11, installing the water sealing structure 12, etc. In addition, the cover body 115 and the housing body 114 can be independently molded and produced, which is conducive to reducing the production difficulty of the housing 11 and improving the production efficiency of the housing 11. Further, the water inlet 111 and the water outlet 112 are both arranged on the cover body 115. Therefore, the water inlet 111 and the water outlet 112 can fully utilize the space on the cover 115 , so that the layout of the water inlet 111 and the water outlet 112 is compact.

[0123] According to some embodiments of the present invention, the cover body 115 includes a cover body 1151 and a water outlet column 1152, the water outlet column 1152 extends along the axial direction of the filter element 10, and a water outlet channel 1153 connected to the water outlet interface 212 is formed in the water outlet column 1152, the water outlet end of the water outlet column 1152 constitutes the water outlet 112, and a water inlet channel 1154 connected to the water inlet 111 and located on the outer peripheral side of the water outlet column 1152 is defined between the water outlet column 1152 and the cover body 1151, the water sealing structure 12 is arranged in the water inlet channel 1154, and the containing chamber 10a is located on the side of the water outlet channel 1153 away from the water outlet 112. That is, the water inlet 111 is connected to the holding chamber 10a through the water inlet channel 1154, and the water outlet 112 is connected to the holding chamber 10a through the water outlet channel 1153. A connected water flow channel is formed between the water inlet 111, the water inlet channel 1154, the holding chamber 10a, the water outlet channel 1153 and the water outlet 112, wherein the water inlet channel 1154 and the water outlet channel 1153 can be separated in the radial direction by the water outlet column 1152, so that after the water flows into the housing 11 through the water inlet 111, it needs to flow through the water inlet channel 1154, the holding chamber 10a and the water outlet channel 1153 in sequence and finally discharge the filter element 10 through the water outlet 112, so as to ensure that the water flows in the filter element 10 and is processed by the filter material in the holding chamber 10a. In addition, the water inlet channel 1154 and the water outlet channel 1153 can make full use of the radial space inside the cover body 115, and the layout is compact.

[0124] Further, a one-way valve 16 is provided in the water outlet channel 1153, which is unidirectionally conducted in the direction toward the water outlet 112. That is to say, the one-way valve 16 is in a conducting state only when the water flow in the housing 11 flows toward the water outlet 112 through the water outlet channel 1153. Thus, it is possible to better avoid the water flow in the waterway connected to the downstream side of the filter element 10 from flowing back into the housing 11 through the water outlet channel 1153. In a specific example, the water pressure required for the one-way conduction of the one-way valve 16 is 0.05Mpa, therefore, it is necessary to control the water inlet pressure of the filter element 10 to be greater than 0.05Mpa, such as the water inlet pressure of the filter element 10 is greater than the sum of the water pressure required for the one-way valve 16 to be conducted and the pressure to overcome the water in the filter element 10 acting on the one-way valve 16, so that the water inlet pressure can overcome the pressure of the water in the filter element 10 acting on the one-way valve 16 and finally open the one-way valve 16.

[0125] The filter element assembly 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0126] According to the embodiment of the present invention, the filter element assembly 100 comprises a socket 20 and a filter element 10, wherein the socket 20 is formed with a water inlet interface 211 and a water outlet interface 212, and the filter element 10 is detachably arranged on the socket 20, wherein the water inlet 111 is adapted to be communicated with the water inlet interface 211, and the water outlet 112 is adapted to be communicated with the water outlet interface 212. That is, the socket 20 can be communicated with the waterway on the upstream side of the filter element assembly 100 through the water inlet interface 211, and the water outlet interface 212 is communicated with the waterway on the downstream side of the filter element assembly 100, so when the filter element 10 is assembled on the socket 20, the water flow in the waterway on the upstream side of the filter element assembly 100 can enter the housing 11 through the water inlet interface 211 and the water inlet 111, and after being processed by the filter material, it can be discharged into the waterway on the downstream side of the filter element assembly 100 through the water outlet 112 and the water outlet interface 212, thereby realizing the purification treatment of the water flow passing through the filter element assembly 100. In addition, the filter element 10 can also be removed from the socket 20, so that it can be replaced after the filter element 10 fails, that is, does not meet the purification requirements, so as to ensure the purification effect of the filter element 10.

[0127] According to the filter element assembly 100 of the embodiment of the present invention, the water sealing structure 12 is used to close the water inlet 111, which can better prevent the water stored in the shell 11 from spilling out through the water inlet 111 after the filter element 10 is removed from the socket 20, thereby better avoiding the trouble caused by the spilled water to the user, which is beneficial to improving the use experience of the filter element 10, and when the water inlet pressure at the water inlet 111 reaches a preset pressure, the water sealing structure 12 is pushed to open the water inlet 111, so that the water sealing structure 12 is opened by the incoming water flow, thereby eliminating the components for opening the water sealing structure 12, making the structure of the filter element 10 simple, which is beneficial to simplifying the structure of the filter element assembly 100.

[0128] According to some embodiments of the present invention, a water inlet hole 213 and a water outlet hole 214 are further formed in the socket 20, the water inlet hole 213 is suitable for connecting the water inlet interface 211 and the water inlet 111, and the water outlet hole 214 is suitable for connecting the water outlet interface 212 and the water outlet 112. That is, when the water inlet hole 213 connects the water inlet interface 211 and the water inlet 111, the water inlet hole 213 is located between the water inlet interface 211 and the water inlet 111 in the direction of water flow, and the water flows into the housing 11 through the water inlet interface 211, the water inlet hole 213 and the water inlet 111 in sequence; when the water outlet hole 214 connects the water outlet interface 212 and the water outlet 112, the water outlet hole 214 is located between the water outlet interface 212 and the water outlet 112 in the direction of water flow, and the water in the housing 11 is discharged from the filter element assembly 100 through the water outlet 112, the water outlet hole 214 and the water outlet interface 212 in sequence. Among them, a valve assembly 23 is provided in the socket 20, and the valve assembly 23 has a conducting state and a blocking state. After the filter element 10 and the socket 20 are assembled, the valve assembly 23 is in the conducting state, the water inlet hole 213 is connected to the water inlet interface 211, and the water outlet hole 214 is connected to the water outlet interface 212.

[0129] That is to say, after the filter element 10 and the socket 20 are assembled, the water inlet hole 213 is connected to the water inlet interface 211 so that the water flow in the water path connected to the water inlet interface 211 can flow to the water inlet 111 through the water inlet hole 213 and flush the water sealing structure 12 to open the water inlet 111, that is, a connected water flow channel is formed between the water inlet interface 211, the water inlet hole 213, the water inlet 111 and the internal cavity of the shell 11, so that the water flow in the water path connected to the upstream side of the filter element assembly 100 can enter the internal cavity of the shell 11 through the water inlet interface 211, the water inlet hole 213 and the water inlet 111 in sequence. At the same time, a connected water flow channel is formed between the internal cavity of the shell 11, the water outlet 112, the water outlet hole 214 and the water outlet interface 212, so that the treated water in the internal cavity of the shell 11 can flow into the waterway connected to the downstream side of the filter element assembly 100 through the water outlet 112, the water outlet hole 214 and the water outlet interface 212, that is, a connected water flow purification channel is formed in the filter element assembly 100, so that the water flowing through the filter element assembly 100 can be better purified, and then the cleanliness of the water flowing to the downstream side through the filter element assembly 100 can be better improved.

[0130] Furthermore, after the filter element 10 is separated from the socket 20, the valve assembly 23 is in a cut-off state, the water inlet hole 213 is cut off from the water inlet interface 211, and the water outlet hole 214 is cut off from the water outlet interface 212. That is to say, after the filter element 10 is separated from the socket 20, the flow path between the water inlet interface 211 and the water inlet hole 213 is cut off, and the flow path between the water outlet interface 212 and the water outlet hole 214 is cut off, which can prevent the water flow in the water path connected to the upstream side of the filter element assembly 100 from spilling through the water inlet hole 213, and at the same time, it can prevent the water flow in the water path connected to the downstream side of the filter element assembly 100 from spilling through the water outlet hole 214. In other words, the valve assembly 23 in the cut-off state can better prevent water leakage at the socket 20, and at the same time, the water inlet pressure at the water inlet 111 disappears, so that the water sealing structure 12 closes the water inlet 111 to prevent the water stored in the shell 11 from spilling through the water inlet 111. In this way, waste of water resources can be better avoided. At the same time, when replacing the filter element 10, the user does not need to close the water circuits connected to the upstream and downstream sides of the filter element assembly 100. For example, when the water inlet interface 211 is directly connected to the water main pipe, the filter element 10 can be replaced without closing the water main pipe valve. This can better simplify the operation of the user when replacing the filter element 10, and at the same time can better avoid the trouble caused to the user by spilled water, which is conducive to improving the user experience.

[0131] In addition, the switching of the valve assembly 23 between the on state and the off state is achieved through the cooperation of the filter element 10 and the seat 20. Specifically, when the filter element 10 and the seat 20 are assembled, the filter element 10 can better push the valve assembly 23 to switch to the on state. After the filter element 10 and the seat 20 are separated, the thrust of the filter element 10 on the valve assembly 23 disappears, and the valve assembly 23 is reset to the off state. That is, the user only needs to operate the filter element 10 and the seat 20 to install or disassemble, which can better save the step of the user controlling the valve assembly 23 separately, and help simplify the operation of the user when replacing the filter element 10.

[0132] Among them, in the conducting state, the water inlet interface 211 is separated from the water outlet interface 212. That is to say, after the filter element 10 and the socket 20 are assembled, the water inlet interface 211 and the water outlet interface 212 cannot be directly connected in the socket 20, that is, the water flow in the waterway connected to the upstream side of the filter element assembly 100 cannot directly flow through the water inlet interface 211 and the water outlet interface 212 to the waterway connected to the downstream side of the filter element assembly 100. At this time, the water inlet interface 211 is connected to the water outlet interface 212 through the water inlet 111, the internal cavity of the shell 11 and the water outlet 112, so that the water flow in the waterway connected to the upstream side of the filter element assembly 100 needs to flow through the filter element 10 for purification and then flow to the waterway connected to the downstream side of the filter element assembly 100 through the water outlet interface 212, which can better avoid the unpurified water flow directly flowing into the waterway connected to the downstream side of the filter element assembly 100, so as to ensure the purification effect of the filter element assembly 100.

[0133] Furthermore, in the cut-off state, the water inlet interface 211 is connected to the water outlet interface 212. That is, after the filter element 10 is separated from the socket 20, a connected water flow channel is formed between the water inlet interface 211 and the water outlet interface 212, so that the water flow in the waterway connected to the upstream side of the filter element assembly 100 can directly flow to the waterway connected to the downstream side of the filter element assembly 100 through the water inlet interface 211 and the water outlet interface 212, so that when the filter element 10 is removed from the socket 20, the water flow in the waterway connected to the downstream side of the filter element assembly 100 can be guaranteed.

[0134] According to some embodiments of the present invention, a first installation cavity 24, a second installation cavity 25 and a connecting cavity 26 are formed in the socket 20, the first installation cavity 24 and the second installation cavity 25 are separated from each other, the valve assembly 23 includes a first stop valve 231 and a second stop valve 232, the first installation cavity 24 is provided with a first stop valve 231, the first stop valve 231 includes a first valve seat 2311 and a first valve core 2312, a first connecting channel 2313 connected to the water inlet interface 211 is formed in the first valve seat 2311, the first valve core 2312 is movably arranged in the first connecting channel 2313 between a first position and a second position, the second installation cavity 25 is provided with a second stop valve 232, and the second stop valve 232 is provided in the second installation cavity 24. The stop valve 232 includes a second valve seat 2321 and a second valve core 2322, and a second connecting channel 2323 connected to the water outlet interface 212 is formed in the second valve seat 2321, and the second valve core 2322 is movably arranged in the second connecting channel 2323 between a third position and a fourth position; wherein, when the valve assembly 23 is in a conducting state, the first valve core 2312 is in the first position and the second valve core 2322 is in the third position, the first connecting channel 2313 connects the water inlet interface 211 and the water inlet hole 213, the second connecting channel 2323 connects the water outlet interface 212 and the water outlet hole 214, and the first connecting channel 2313 and the second connecting channel 2323 are both separated from the connecting cavity 26.

[0135] That is to say, when the first valve core 2312 is in the first position and the second valve core 2322 is in the third position, the first stop valve 231 conducts the water flow channel between the water inlet interface 211 and the water inlet hole 213 and cuts off the water flow channel between the water inlet interface 211 and the connecting chamber 26, so that the water inlet interface 211 is connected with the water inlet hole 213 through the first connecting passage 2313, and the second stop valve 232 conducts the water flow channel between the water outlet interface 212 and the water outlet hole 214 and cuts off the water flow channel between the water outlet interface 212 and the connecting chamber 26, so that the water outlet interface 212 is connected with the water outlet hole 214 through the second connecting passage 2323, so that the water inlet interface 211, the first connecting passage 2313, and the water inlet hole 213 can be connected. A connected water flow channel is formed among the hole 213, the water inlet 111, the internal cavity of the shell 11, the water outlet 112, the water outlet hole 214, the second connecting channel 2323 and the water outlet interface 212. At the same time, the water inlet interface 211 cannot pass through, and the first connecting channel 2313, the connecting cavity 26 and the second connecting channel 2323 are directly connected to the water outlet interface 212, so that the water flow in the waterway connected to the upstream side of the filter element assembly 100 needs to flow through the filter element 10 for purification and then flow to the waterway connected to the downstream side of the filter element assembly 100 through the water outlet interface 212. This can better prevent the unpurified water flow from directly flowing into the waterway connected to the downstream side of the filter element assembly 100, so as to ensure the purification effect of the filter element assembly 100.

[0136] Further, when the valve assembly 23 is in the cut-off state, the first valve core 2312 is in the second position and the second valve core 2322 is in the fourth position, the first communication channel 2313 is isolated from the water inlet hole 213, the second communication channel 2323 is isolated from the water outlet hole 214, and the first communication channel 2313 and the second communication channel 2323 are connected through the communication chamber 26. That is to say, when the first valve core 2312 is in the second position and the second valve core 2322 is in the fourth position, the first stop valve 231 stops the water flow channel between the water inlet interface 211 and the water inlet hole 213 and opens the water flow channel between the water inlet interface 211 and the communication chamber 26, so that the water inlet interface 211 is connected to the communication chamber 26 through the first communication channel 2313, and the second stop valve 232 stops the water flow channel between the water outlet interface 212 and the water outlet hole 214 and opens the water flow channel between the communication chamber 26 and the water inlet interface 211, so that the water outlet interface 212 is connected to the communication chamber 26 through the second communication channel. 2323 is connected to the communication chamber 26, so that after the filter element 10 is separated from the socket 20, a communicating water flow channel is formed between the water inlet interface 211, the first communication channel 2313, the communication chamber 26, the second communication channel 2323 and the water outlet interface 212, so that the water flow in the waterway connected to the upstream side of the filter element assembly 100 can directly flow to the waterway connected to the downstream side of the filter element assembly 100 through the water inlet interface 211 and the water outlet interface 212, so that when the filter element 10 is removed from the socket 20, the water flow in the waterway connected to the downstream side of the filter element assembly 100 can be guaranteed. Supply. In a specific example, the first stop valve 231 and the second stop valve 232 are the same.

[0137] According to some optional embodiments of the present invention, a sliding rib 117 is provided on one of the inner peripheral wall of the socket 20 and the outer peripheral wall of the housing 11, and a sliding groove 22 is provided on the other of the inner peripheral wall of the socket 20 and the outer peripheral wall of the housing 11, and the sliding rib 117 and the sliding groove 22 are engaged with each other through the relative rotation of the socket 20 and the filter element 10. That is, through the cooperation of the sliding groove 22 and the sliding rib 117, the rotational engagement between the housing 11 and the socket 20 can be achieved, so that the assembly method between the housing 11 and the socket 20 is simple, and the filter element 10 is detachably connected to the socket 20 through the rotational engagement between the housing 11 and the socket 20, so that the replacement of the filter element 10 is convenient. Specifically, the filter element 10 can be installed on the socket 20 by rotation, such as forward rotation. When the filter element 10 rotates forward relative to the socket 20, the sliding bar 117 rotates relative to the sliding groove 22 and gradually enters the sliding groove 22. The sliding groove 22 limits the sliding bar 117 to prevent the housing 11 from falling off the socket 20. The filter element 10 can also be removed from the socket 20 by rotation, such as reverse rotation. When the filter element 10 reverses relative to the socket 20, the sliding bar 117 rotates relative to the sliding groove 22 and gradually rotates out of the sliding groove 22 until the sliding bar 117 is completely disengaged from the sliding groove 22 to release the limiting effect of the sliding groove 22 on the sliding bar 117, thereby facilitating the removal of the filter element 10 from the socket 20.

[0138] Reference below Figure 1-Figure 10 The filter element assembly 100 according to a specific embodiment of the present invention is described. It is worth noting that the following description is only exemplary and intended to be used to explain the present invention, and cannot be understood as limiting the present invention.

[0139] Embodiment 1

[0140] The filter element assembly 100 includes a socket 20 and a filter element 10, wherein the filter element 10 is detachably connected to the lower end of the socket 20, and the filter element 10 includes: a housing 11, a water sealing structure 12, a central tube 131 and a filter material cover 132, the housing 11 includes a detachably connected shell body 114 and a cover body 115, and a fourth sealing ring 174 is provided at the connection position between the cover body 115 and the shell body 114, the shell body 114 opens upward, and the cover body 115 is covered at the upper end of the shell body 114, and the socket 20 is rotatably connected to the filter element 10, and the socket 20 is connected to the filter element 10. A slide groove 22 is formed on the inner circumferential wall of the seat 20, and a slide rib 117 is formed on the outer circumferential wall of the cover body 115. The slide groove 22 and the slide rib 117 are connected by rotation. In the rotation direction along the installation of the filter element 10, the slide rib 117 extends toward the direction of the inner bottom wall close to the socket 20, that is, upwardly inclined. Therefore, during the assembly process of the filter element 10 and the socket 20, the filter element 10 moves toward the direction of the inner bottom wall close to the socket 20, wherein a first sealing ring 171 is provided between the outer circumferential wall of the cover body 115 and the inner circumferential wall of the socket 20.

[0141] Furthermore, the cover body 115 includes a cover body 1151 and a water outlet column 1152. The water outlet column 1152 extends in the up-down direction and is arranged at the center of the cover body 1151. The upper end of the water outlet column 1152 extends out of the upper end surface of the cover body 1151. A water outlet channel 1153 is formed in the water outlet column 1152. A one-way valve 16 that conducts upward one-way is arranged in the water outlet channel 1153. A third sealing ring 173 is arranged between the outer peripheral wall of the one-way valve 16 and the inner peripheral wall of the water outlet channel 1153. The water outlet channel 1153 is sealed. A water outlet 112 is formed at the upper end, and the water outlet column 1152 and the cover body 1151 jointly define a water inlet channel 1154 located on the outer peripheral side of the water outlet column 1152. The water flow direction of the water inlet channel 1154 is opposite to that of the water outlet channel 1153. The upper end surface of the cover body 1151 forms a plurality of water inlets 111 arranged at intervals along the outer peripheral direction of the water outlet 112. The water inlet 111 is arc-shaped, and the plurality of water inlets 111 are located in the same circular ring. The water inlet end, i.e., the upper end, of the water inlet channel 1154 is connected to the water inlet 111.

[0142] Among them, a water inlet interface 211, a water outlet interface 212, a water inlet hole 213 and a water outlet hole 214 are formed on the socket 20. The water inlet hole 213 and the water outlet hole 214 are formed on the inner bottom wall of the socket 20 and are respectively connected to the water inlet 111 and the water outlet 112. After the filter element 10 and the socket 20 are assembled, the upper end of the water outlet column 1152 is inserted into the water outlet hole 214, and a second sealing ring 172 is provided between the outer peripheral wall of the water outlet column 1152 and the inner peripheral wall of the water outlet hole 214. Specifically, the water sealing structure 12 is arranged in the water inlet channel 1154 and is sleeved on the water outlet column 1152. Specifically, the water sealing structure 12 includes a water stop pad 121, a water stop spring 122 and a spring support 123 arranged in sequence from top to bottom. The water stop pad 121 is annular and is spaced apart from the side wall of the water inlet channel 1154 in the radial direction of the filter element 10. The water stop pad 121 is arranged at the lower end of the multiple water inlets 111 and is arranged opposite to the multiple water inlets 111.

[0143] Furthermore, an annular positioning groove 1211 is formed on the lower end surface of the water-stop pad 121, and the water-stop spring 122 includes a first matching portion 1222, a spring main body portion 1221 and a second matching portion which are connected in sequence from top to bottom. The diameters of the first matching portion 1222 and the second matching portion in the up and down directions remain unchanged, and the diameter of the spring main body portion 1221 gradually increases in the up and down direction. The first matching portion 1222 is inserted into the positioning groove 1211, and in the up and down directions, the height of the first matching portion 1222 is less than the depth of the positioning groove 1211, and the upper end surface of the first matching portion 1222 is formed as a first plane, and the first plane is parallel to the bottom wall of the positioning groove 1211, that is, the downward side wall and is in contact with the bottom wall of the positioning groove 1211. In addition, the spring support 123 includes a limiting rib 124, a support portion and a flange, the limiting rib 124 is provided on the upper end surface of the support portion, the outer peripheral edge of the support portion is bent downward and extended to form a flange, a clamping groove 113 is formed on the inner peripheral wall of the cover body 1151, and the flange is clamped and matched in the clamping groove 113. Specifically, a first through hole and a second through hole are formed on the support portion, the first through hole is located at the center of the support portion in the horizontal direction, the lower end of the water outlet column 1152 is penetrated in the first through hole, a plurality of second through holes are provided and are arc-shaped, and the plurality of second through holes are arranged at intervals along the outer peripheral direction of the first through hole, so that the water flow in the water inlet channel 1154 can flow downward through the second through hole. In addition, a plurality of limiting ribs 124 are provided, and the plurality of limiting ribs 124 are arranged at intervals along the circumferential direction of the first through hole. The second matching portion is located between the plurality of limiting ribs 124, and the outer circumferential wall of the second matching portion abuts against the radial inner wall of the plurality of limiting ribs 124. In the up and down directions, the height of the second matching portion is smaller than the height of the limiting rib 124, and the lower end face of the second matching portion is formed as a second plane, which is parallel to the upper end face of the support portion and fits with the upper end face of the support portion.

[0144] The central tube 131 is arranged in the shell 11 and below the water outlet column 1152. The central tube 131 includes a tube body 1313 and a support structure 1314 arranged on the outer peripheral wall of the tube body 1313. The outer peripheral wall of the tube body 1313 is separated from the inner peripheral wall of the shell body 114. A central channel 1312 extending in the up-down direction is formed in the tube body 1313. A water hole 1311 is provided on the outer peripheral wall of the lower end of the tube body 1313. The support structure 1314 includes a support The support ring is in a circular shape, the tube body 1313 is passed through the support ring and is coaxially arranged with the support ring, the outer circumferential wall of the tube body 1313 is spaced apart from the inner circumferential wall of the support ring, and a plurality of support ribs are provided, one end of the support rib is connected to the outer circumferential wall of the tube body 1313, and the other end of the support rib is connected to the inner circumferential wall of the support ring, and a plurality of support ribs are spaced apart along the circumferential direction of the tube body 1313, and the upper end of the support ring and the support ribs are flush with the upper end of the tube body 1313. In addition, the filter material cover 132 includes a material cover body 1322 and a connecting portion 1323. The material cover body 1322 forms a downwardly opening assembly groove 1324, and the support structure 1314 is located in the assembly groove 1324. The outer peripheral wall of the material cover body 1322 abuts against the inner peripheral wall of the shell body 114, and a sixth sealing ring 176 is provided between the outer peripheral wall of the material cover body 1322 and the inner peripheral wall of the shell body 114. The material cover body 1322 and the inner wall of the tube body 1313 and the shell body 114 jointly define a containing cavity 10a located on the outer peripheral side of the tube body 1313 and on the lower side of the material cover body 1322. The containing chamber 10a is used to contain resin, adsorption or scale-inhibiting filter materials, wherein a through hole 1321 penetrating in the up-down direction is formed on the material cover body 1322, a first filter screen 133 is arranged in the through hole 1321, a connecting portion 1323 is arranged at the center of the material cover body 1322 and forms a connecting channel 1325 penetrating in the up-down direction, the upper end of the connecting portion 1323 is inserted into the lower end of the water outlet channel 1153, and a fifth sealing ring 175 is arranged between the outer peripheral wall of the connecting portion 1323 and the inner peripheral wall of the water outlet channel 1153, and the lower end of the connecting channel 1325 is connected to the upper end of the central channel 1312. Further, a plurality of fixed ribs 118 arranged at intervals along the circumference of the filter element 10 are formed on the bottom wall of the shell body 114, and the lower end of the tube body 1313 is located between the plurality of fixed ribs 118 and abuts against the radial inner wall of the fixed ribs 118.

[0145] Specifically, after the filter element 10 is assembled on the socket 20, the water flow in the waterway connected to the upstream side of the filter element assembly 100 passes through the water inlet interface 211 and flows to the water inlet 111, and the pressure of the incoming water flow pushes the water stop pad 121 to move downward and compresses the water stop spring 122. The water stop pad 121 is spaced apart from the water inlet 111 in the up and down directions. The water flows downward through the water inlet 111 into the water inlet channel 1154, and enters the containing chamber 10a through the second through hole, the first filter screen 133, and the through hole 1321 on the spring support 123. The water is initially filtered through the first filter element 10, and the containing chamber 10a is filtered. The water in the cavity 10a flows through the water flow in the water channel 119 toward the radial direction of the filter element 10 toward the central axis of the filter element 10, and finally flows into the lower end of the central channel 1312 through the water hole 1311, and performs secondary filtration of the incoming water through the filter material in the cavity 10a. As the incoming water flow continues to increase, the water flows upward along the central channel 1312, and enters the water outlet channel 1153 through the connecting channel 1325, pushing the one-way valve 16 from bottom to top, so that the water flow is finally discharged into the water channel connected to the downstream side of the filter element assembly 100 through the water outlet 112 and the water outlet interface 212.

[0146] Embodiment 2

[0147] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 11-Figure 15The difference between the second embodiment and the first embodiment is that the filter element 10 includes a shell 11, a water sealing structure 12 and a first filter material box 14, wherein the first filter material box 14 is arranged below the water outlet column 1152 and is spaced apart from the inner circumferential wall of the shell 11, and a water passage 119 located at the lower end of the water inlet channel 1154 and connected to the lower end of the water inlet channel 1154 is defined between the outer circumferential wall of the first filter material box 14 and the inner circumferential wall of the shell 11, and the first filter material box 14 includes a first box body 141, a first box cover 142 and a second filter screen 143, the first box body 141 is cylindrical and forms an upward opening, and a plurality of water holes 1411 arranged along the axial direction and circumferential direction of the filter element 10 are formed on the circumferential wall of the first box body 141, and the first box cover 142 is covered at the upper end opening position of the first box body 141. The first box cover 142 and the first box body 141 jointly define a containing cavity 10a, the containing chamber 10a is used to contain resin, adsorption or scale-inhibiting filter materials. At the same time, the center position of the first box cover 142 protrudes upward to form a fixing portion 1421, the upper end of the fixing portion 1421 is inserted into the lower end of the water outlet channel 1153, and a seventh sealing ring 177 is provided between the outer peripheral wall of the fixing portion 1421 and the inner peripheral wall of the water outlet channel 1153. The first box cover 142 has an intermediate channel 1422 that penetrates the fixing portion 1421 in the up and down directions, the upper end of the intermediate channel 1422 is communicated with the water outlet channel 1153, and the lower end of the intermediate channel 1422 is communicated with the containing chamber 10a. The second filter screen 143 is annular and is sleeved on the outer peripheral side of the first box body 141. The upper end of the second filter screen 143 is connected to the first cover body 115, and an eighth sealing ring 178 is provided between the inner peripheral wall of the upper end of the second filter screen 143 and the outer peripheral wall of the first box body 141.

[0148] In addition, the spring support member 123 is arranged on the first box cover 142. Specifically, the upper end surface of the first box cover 142 forms a limiting rib 124 extending along the peripheral direction of the fixing portion 1421. The lower end of the water stop spring 122, i.e., the outer peripheral wall of the second matching portion, abuts against the radial inner wall of the limiting rib 124 to prevent the water stop spring 122 from moving radially relative to the first box cover 142.

[0149] Specifically, after the filter element 10 is assembled on the socket 20, the water flow in the waterway connected to the upstream side of the filter element assembly 100 passes through the water inlet interface 211 and flows to the water inlet 111, and the pressure of the incoming water flow pushes the water stop pad 121 to move downward and compresses the water stop spring 122. The water stop pad 121 is spaced apart from the water inlet 111 in the up and down directions. The water flows downward through the water inlet 111 into the water inlet channel 1154, and continues to flow downward into the water passage 119. The water flow in the water passage 119 flows in the direction along the radial direction of the filter element 10 toward the central axis of the filter element 10, that is, , the water flows through the second filter screen 143 and the water hole 1411 in turn into the containing chamber 10a, and the first filtration of the incoming water is performed by the second filter element 10. The water in the containing chamber 10a flows upward and enters the middle channel 1422, and the incoming water is secondary filtered by the filter material in the containing chamber 10a. As the incoming water flow continues to increase, the water flows upward along the middle channel 1422 into the water outlet channel 1153, and pushes the one-way valve 16 to conduct from bottom to top, so that the water flow finally flows through the channel outlet 112 and the water outlet interface 212 into the waterway connected to the downstream side of the filter element assembly 100.

[0150] Embodiment 3

[0151] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 16-Figure 20The difference between the third embodiment and the first embodiment is that the filter element 10 includes a shell body 11, a water sealing structure 12 and a second filter box 15, the second filter box 15 is placed in the shell body 114, the outer peripheral wall of the second filter box 15 is separated from the inner peripheral wall of the shell body 114 and is located below the water outlet column 1152, and a dissolution and filtration chamber is formed between the water outlet column 1152 and the second filter box 15, and the dissolution and mixing chamber 116 is located below the water inlet channel 1154 and the water outlet channel 1153, and is connected to the water inlet channel 1154 and the water outlet channel 1153. The second filter material box 15 includes a detachably connected second box cover 153 and a second box body 152, the second box cover 153 and the second box body 152 define a holding chamber 10a for holding a slow-release filter material, the upper end surface of the second box cover 153 is spaced apart from the water outlet column 1152 and forms a slow-release hole 151 connected to the holding chamber 10a, the slow-release hole 151 and the water outlet channel 1153 are arranged opposite to each other in the up-down direction, and the upper end surface of the second box cover 153 is also provided with a plurality of support holes arranged at intervals along the circumference of the filter element 10. A supporting rib 154, the upper end of which abuts against the bottom wall of the spring support 123, a plurality of fixed ribs 118 arranged at intervals along the circumference of the filter element 10 are provided on the inner wall of the shell body 114, a guide structure is formed on the radial inner wall of the fixed rib 118 and the outer peripheral wall of the second box body 152, the lower end of the second box body 152 is located between the plurality of fixed ribs 118 and the outer peripheral wall of the second box body 152 abuts against the radial inner wall of the fixed rib 118 to limit the movement of the second filter material box 15.

[0152] Specifically, after the filter element 10 is assembled on the socket 20, the water flow in the waterway connected to the upstream side of the filter element assembly 100 passes through the water inlet interface 211 and flows to the water inlet 111, and the water stop pad 121 is pushed downward by the pressure of the incoming water flow and compresses the water stop spring 122. The water stop pad 121 is spaced apart from the water inlet 111 in the up and down directions. The water flows downward through the water inlet 111 into the water inlet channel 1154 and continues to flow downward into the shell body 114. As the water level in the shell body 114 continues to rise, the water gradually overflows the slow-release hole 151 of the second filter material box 15 and enters the dissolution mixing chamber 116, where Part of the water flows into the containing chamber 10a through the slow-release hole 151, contacts with the slow-release filter material and dissolves the slow-release filter material. As the water level in the containing chamber 10a continues to rise, the dissolved slow-release filter material flows into the dissolving and mixing chamber 116 through the slow-release hole 151 along with the water flow and is mixed in the water flow in the dissolving and mixing chamber 116. As the entering water flow continues to increase, the water flow mixed with the slow-release filter material in the dissolving and mixing chamber 116 flows upward into the water outlet channel 1153, and pushes the one-way valve 16 to be opened from bottom to top, so that the water flow finally flows into the water outlet 112 and the water outlet interface 212 into the waterway connected to the downstream side of the filter element assembly 100.

[0153] Embodiment 4

[0154] The structure of this embodiment is substantially the same as that of the first embodiment, wherein the same components are marked with the same reference numerals. Figure 21-26 The difference between the fourth embodiment and the first embodiment is that a first mounting cavity 24, a second mounting cavity 25 and a connecting cavity 26 are further formed on the socket 20, the second mounting cavity 25 is arranged at the center position of the socket 20, the first mounting cavity 24 and the second mounting cavity 25 are spaced apart in the radial direction of the filter element 10 and extend in the up-down direction, the connecting cavity 26 is arranged on the upper side of the first mounting cavity 24 and the second mounting cavity 25 and is connected with the upper end of the first mounting cavity 24 and the upper end of the second mounting cavity 25, the lower end of the first mounting cavity 24 constitutes a water inlet hole 213, and the lower end of the second mounting cavity 25 constitutes a water outlet hole 214. Furthermore, a valve assembly 23 is provided in the socket 20, and the valve assembly 23 includes a first stop valve 231 provided in the first installation cavity 24 and a second stop valve 232 provided in the second installation cavity 25. The first stop valve 231 includes a first valve seat 2311, a first valve core 2312 and a first return spring 2314. The first valve seat 2311 is penetrated in the first installation cavity 24 along the up-down direction, and a first connecting passage 2313 extending and penetrating along the up-down direction is formed in the first valve seat 2311. The water inlet interface 211 is communicated with the first connecting passage 2313 at a middle position in the up-down direction. The first valve core 2312 is penetrated in the first connecting passage 2313 and the lower end thereof extends out of the side wall of the socket 20 toward the filter element 10, i.e., the inner bottom wall of the socket 20. The first return spring 2314 is provided at the first valve core 2312 and the first valve seat 2311 and is used to push the first valve core 2312 to move downward; the second stop valve 232 includes a second valve seat 2321, a second valve core 2322 and a second return spring 2324, the second valve seat 2321 is arranged in the second installation cavity 25 along the up and down directions, and a second connecting channel 2323 extending and penetrating in the up and down directions is formed in the second valve seat 2321, the water outlet interface 212 is connected with the second connecting channel 2323 at the middle position in the up and down directions, the second valve core 2322 is arranged in the second connecting channel 2323 and the lower end extends out of the seat 20 toward the side wall of the filter element 10, that is, the inner bottom wall of the seat 20, the second return spring 2324 is arranged between the second valve core 2322 and the second valve seat 2321 and is used to push the second valve core 2322 to move downward.

[0155] Among them, the first valve core 2312 has a first position and a second position, and the second valve core 2322 has a third position and a fourth position. Specifically, when the filter element 10 is separated from the socket 20, the first valve core 2312 is in the second position under the push of the first return spring 2314, and the first valve core 2312 blocks the lower end opening of the first connecting channel 2313 to separate the water inlet interface 211 and the water inlet hole 213, and at the same time, the first valve core 2312 opens the upper end opening of the first connecting channel 2313 to connect the water inlet interface 211 and the connecting chamber 26; the second valve core 2322 is in the fourth position under the push of the second return spring 2324, and the second valve core 2322 blocks the lower end opening of the second connecting channel 2323 to separate the water outlet interface 212 and the water outlet hole 214, and at the same time, the second valve core 2322 opens the upper end opening of the second connecting channel 2323 to connect the water outlet interface 212 and the connecting chamber 26. During the assembly process of the filter element 10 and the socket 20, when the filter element 10 moves upward relative to the socket 20, it pushes the first valve core 2312 to move upward to the first position, and the first valve core 2312 opens the lower end opening of the first connecting channel 2313 to connect the water inlet interface 211 and the water inlet hole 213, and at the same time, the first valve core 2312 blocks the upper end opening of the first connecting channel 2313 to separate the water inlet interface 211 and the connecting chamber 26; at the same time, the filter element 10 pushes the second valve core 2322 to move upward to the third position, the second valve core 2322 opens the lower end opening of the second connecting channel 2323 to connect the water outlet interface 212 and the water outlet hole 214, and the second valve core 2322 blocks the upper end opening of the second connecting channel 2323 to separate the water outlet interface 212 and the connecting chamber 26.

[0156] The water heater assembly 1000 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0157] like Figure 27-Figure 43 As shown, the water heater assembly 1000 according to the embodiment of the present invention includes: a water heater 200 and a filter element assembly 100, the filter element assembly 100 is connected to the water heater 200, and the filter element assembly 100 is used to process water flow. Therefore, the water sealing structure 12 in the filter element 10 of the filter element assembly 100 can better avoid water leakage when replacing the filter element 10, thereby better avoiding the trouble caused by the spilled water to the user, which is conducive to improving the user experience of the water heater assembly 1000.

[0158] According to the water heater assembly 1000 of the embodiment of the present invention, the water sealing structure 12 is used to close the water inlet 111, which can effectively prevent the water stored in the shell 11 from spilling out through the water inlet 111 after the filter element 10 is removed from the socket 20, thereby effectively preventing the inconvenience caused to the user by the spilled water, which is beneficial to improving the use experience of the filter element 10, and when the water inlet pressure at the water inlet 111 reaches a preset pressure, the water sealing structure 12 is pushed to open the water inlet 111, so that the water sealing structure 12 is opened by the inlet water flow, thereby eliminating the components for opening the water sealing structure 12, making the structure of the filter element 10 simple, and helping to simplify the structure of the filter element assembly 100 and the water heater assembly 1000.

[0159] Specifically, the water heater 200 includes a housing 210 and a heat exchange component 220 disposed in the housing 210. The heat exchange component 220 is used to heat water. The heat exchange component 220 has an exchange inlet 230 and an exchange outlet 240, so that cold water can enter the heat exchange component 220 through the exchange inlet 230 and be discharged through the exchange outlet 240 after being heated, thereby achieving heating treatment of the water flow. Further, the water inlet interface 211 of the filter element assembly 100 is connected with the exchange outlet 240 of the heat exchange component 220, that is, the water flow heated by the heat exchange component 220 flows out through the exchange outlet 240 and then flows into the filter element assembly 100 through the water inlet interface 211 for purification treatment. For example, the slow-release filter material in the filter element assembly 100 can add flavor to the hot water, add water replenishing substances or remove residual chlorine in the hot water, etc., which can better improve the comfort of users using hot water.

[0160] Optionally, the filter element assembly 100 can be completely disposed in the outer shell 210, so that the filter element assembly 100 can be better protected by the outer shell 210, and at the same time, the filter element assembly 100 can be avoided from being exposed, so that the appearance of the water heater assembly 1000 is neater; the filter element assembly 100 can also be completely disposed on the outside of the outer shell 210, which is convenient for maintenance of the filter element assembly 100, such as facilitating replacement of the filter element 10, etc.; of course, it is also possible that part of the filter element assembly 100 is disposed in the outer shell 210, such as the seat 20 of the filter element assembly 100 is located in the outer shell 210, and the filter element 10 is disposed outside the outer shell 210, so that the exposed part of the filter element assembly 100 can be reduced while facilitating the replacement of the filter element 10, and the layout is reasonable.

[0161] Optionally, the filter element assembly 100 can be arranged only on the upstream side of the heat exchange component 220. The filter element assembly 100 arranged on the upstream side of the heat exchange component 220 is a pre-filter element assembly 100a. The holding chamber 10a in the pre-filter element assembly 100a is used to hold resin, adsorption or scale inhibition filter materials, such as the filter element assembly 100 in the above specific embodiment 1, and can also be the filter element assembly 100 in the above specific embodiment 2. No specific restrictions are made here. Specifically, the pre-filter The water outlet interface 212 of the core assembly 100a is connected to the exchange inlet 230, so that the water flow entering the heat exchange component 220 can be filtered through the pre-filter element assembly 100a to ensure the cleanliness of the water flow entering the heat exchange component 220; the filter element assembly 100 can also be set only on the downstream side of the heat exchange component 220, and the filter element assembly 100 arranged on the downstream side of the heat exchange component 220 is the post-filter element assembly 100b, and the holding chamber 10a in the post-filter element assembly 100b is used to hold slow-release filter materials, such as the filter element assembly 100 in the specific embodiment 3 above, specifically, the water inlet interface 211 of the post-filter element assembly 100b is connected to the exchange outlet 240, so that the water flow discharged from the heat exchange component 220 can be processed again through the post-filter element assembly 100b; the filter element assembly 100 can also be set on both the upstream and downstream sides of the heat exchange component 220, wherein the filter element assembly 100 arranged on the upstream side of the heat exchange component 220 is The pre-filter element assembly 100a, the water outlet interface 212 of the pre-filter element assembly 100a is connected to the exchange inlet 230, the filter element assembly 100 arranged on the downstream side of the heat exchange component 220 is the post-filter element assembly 100b, and the water inlet interface 211 of the post-filter element assembly 100b is connected to the exchange outlet 240, which can ensure the cleanliness of the water flow entering the heat exchange component 220 and at the same time, the water flow discharged from the heat exchange component 220 can be processed again through the post-filter element assembly 100b.

[0162] According to some embodiments of the present invention, the water heater assembly 1000 also includes a mixing valve 300, which has a first inlet, a second inlet and a mixing water outlet. One of the first inlet and the second inlet is connected to the exchange outlet 240, and the other of the first inlet and the second inlet is connected to the cold water circuit. The mixing valve 300 can be used to better adjust the temperature of the water flow discharged through the mixing water outlet to meet the user's needs for different water temperatures. For example, constant temperature water outlet of the water heater assembly 1000 can be achieved to improve the user's bathing comfort.

[0163] Alternatively, if Fig.34As shown, the water heater assembly 1000 includes a pre-filter element assembly 100a, a water heater 200 and a water mixing valve 300. The water heater 200 is located on the downstream side of the pre-filter element assembly 100a and on the upstream side of the water mixing valve 300. The exchange inlet 230 and the second inlet are both connected to the water outlet interface 212 of the pre-filter element assembly 100a, and the first inlet is connected to the exchange outlet 240, that is, the water flow entering the water mixing valve 300 through the first inlet and the second inlet is filtered and processed by the pre-filter element assembly 100a.

[0164] Alternatively, if Fig.35 As shown, the water heater assembly 1000 includes a pre-filter element assembly 100a, a water heater 200 and a mixing valve 300. The water heater 200 is located on the downstream side of the pre-filter element assembly 100a and on the upstream side of the mixing valve 300. The exchange inlet 230 is connected to the water outlet interface 212 of the pre-filter element assembly 100a, the first inlet is connected to the exchange outlet 240, and the second inlet and the water inlet interface 211 are both directly connected to the water path on the upstream side of the pre-filter element assembly 100a, so that the pre-filter element assembly 100a only needs to filter the water flow entering the water heater 200 from the water path on the upstream side, thereby effectively reducing the loss of filter media.

[0165] Alternatively, if Fig.37 As shown, the water heater assembly 1000 includes a post-filter assembly 100b, a water heater 200 and a mixing valve 300. The mixing valve 300 is located on the downstream side of the water heater 200 and on the upstream side of the post-filter assembly 100b. The first inlet is connected to the exchange outlet 240, the second inlet and the exchange inlet 230 are directly connected to the water flow on the upstream side of the water heater 200, and the mixing outlet is connected to the water inlet interface 211, so that the mixed water flow out of the mixing valve 300 is all processed by the post-filter assembly 100b.

[0166] Alternatively, if Fig.38 As shown, the water heater assembly 1000 includes a post-filter element assembly 100b, a water heater 200 and a mixing valve 300. The post-filter element assembly 100b is located on the downstream side of the water heater 200 and on the upstream side of the mixing valve 300. The exchange outlet 240 is connected to the water inlet interface 211, the water outlet interface 212 is connected to the first inlet, and the second inlet and the exchange inlet 230 are both connected to the water path on the upstream side of the water heater 200, so that the post-filter element assembly 100b only needs to process the hot water discharged from the water heater 200, thereby effectively reducing the loss of filter media.

[0167] Alternatively, if Fig.40As shown, the water heater assembly 1000 includes a pre-filter assembly 100a, a post-filter assembly 100b, a water heater 200 and a mixing valve 300. The water heater 200 is located on the downstream side of the pre-filter assembly 100a and on the upstream side of the post-filter assembly 100b. The mixing valve 300 is located on the downstream side of the post-filter assembly 100b. The water inlet interface 211 and the second inlet of the pre-filter assembly 100a are directly connected to the waterway on the upstream side of the pre-filter assembly 100a. The water outlet interface 212 of the pre-filter assembly 100a is connected to the exchange inlet 230, and the exchange outlet 240 is connected to the water inlet interface of the post-filter assembly 100b. 211 is connected, and the water outlet interface 212 of the post-filter element assembly 100b is connected with the first inlet, so that the water flow in the water path on the upstream side of the pre-filter element assembly 100a enters the mixing valve 300 after being purified and heated by the pre-filter element assembly 100a, the water heater 200 and the post-filter element assembly 100b, and is mixed with the water flow in the water path on the upstream side of the pre-filter element assembly 100a that directly enters the mixing valve 300, that is, the pre-filter element assembly 100a only needs to filter the water flow entering the water heater 200 in the water path on the upstream side, and the post-filter element assembly 100b only needs to process the hot water discharged from the water heater 200, thereby effectively reducing the loss of filter media.

[0168] Alternatively, if Fig.41 As shown, the water heater assembly 1000 includes a pre-filter assembly 100a, a post-filter assembly 100b, a water heater 200 and a mixing valve 300. The water heater 200 is located on the downstream side of the pre-filter assembly 100a and on the upstream side of the mixing valve 300. The post-filter assembly 100b is located on the downstream side of the mixing valve 300. The water inlet interface 211 and the second inlet of the pre-filter assembly 100a are directly connected to the water path on the upstream side of the pre-filter assembly 100a. The water outlet interface 212 of the pre-filter assembly 100a is connected to the exchange inlet 230, the exchange outlet 240 is connected to the first inlet, and the mixing outlet is connected to the water inlet interface 211 of the post-filter assembly 100b, so that the mixed water flow out of the mixing valve 300 is all processed by the post-filter assembly 100b, and the hot water portion thereof is also filtered and processed by the pre-filter assembly 100a.

[0169] Alternatively, if Fig.42As shown, the water heater assembly 1000 includes a pre-filter assembly 100a, a post-filter assembly 100b, a water heater 200 and a mixing valve 300. The water heater 200 is located on the downstream side of the pre-filter assembly 100a and on the upstream side of the post-filter assembly 100b. The mixing valve 300 is located on the downstream side of the post-filter assembly 100b. The water outlet interface 212 of the pre-filter assembly 100a is connected to the exchange inlet 230 and the second inlet, the exchange outlet 240 is connected to the water inlet interface 211 of the post-filter assembly 100b, and the water outlet interface 212 of the post-filter assembly 100b is connected to the first inlet, so that the mixed water flow out of the mixing valve 300 is all processed by the pre-filter assembly 100a, and the hot water portion thereof is also processed by the post-filter assembly 100b.

[0170] Alternatively, if Fig.43 As shown, the water heater assembly 1000 includes a pre-filter assembly 100a, a post-filter assembly 100b, a water heater 200 and a mixing valve 300. The water heater 200 is located on the downstream side of the pre-filter assembly 100a and on the upstream side of the mixing valve 300. The post-filter assembly 100b is located on the downstream side of the mixing valve 300. The water outlet interface 212 of the pre-filter assembly 100a is connected to the exchange inlet 230 and the second inlet, the exchange outlet 240 is connected to the first inlet, and the mixing outlet is connected to the water inlet interface 211 of the post-filter assembly 100b, so that the water flow heated by the water heater 200 and the water flow not heated by the water heater 200 are both processed by the pre-filter assembly 100a and the post-filter assembly 100b.

[0171] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0172] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0173] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A filter element, characterized in that: include: A housing, wherein a water inlet and a water outlet are formed on the housing, wherein the water inlet is provided with a plurality of water inlets arranged at intervals along the circumference of the filter element and located on the outer peripheral side of the water outlet, and wherein the housing has a containing cavity communicated with the water inlet and the water outlet, and the containing cavity is used to contain filter material; A water sealing structure is arranged in the shell and is used to close the water inlet. When the water inlet pressure at the water inlet reaches a preset pressure, the water sealing structure is pushed to open the water inlet.

2. The filter element according to claim 1, characterized in that: The water sealing structure comprises: A water-stop pad, the water-stop pad is arranged opposite to the water inlet; A water-stop spring is connected to the water-stop pad, and is used to push the water-stop pad to close the water inlet. When the water inlet pressure at the water inlet reaches a preset pressure, the water-stop pad is pushed to compress the water-stop spring to open the water inlet.

3. The filter element according to claim 2, characterized in that: The diameter of the water stop spring increases in a direction away from the water stop pad.

4. The filter element according to claim 2, characterized in that: A positioning groove is formed on the end surface of the water-stop pad facing the water-stop spring. The positioning groove is annular, and one end of the water-stop spring facing the water-stop pad is inserted into the positioning groove.

5. The filter element according to claim 2, characterized in that: The water sealing structure also includes: A spring support member is arranged in the shell and is located on a side of the water stop pad away from the water inlet. The axial ends of the water stop spring are respectively connected to the water stop pad and the spring support member.

6. The filter element according to claim 5, characterized in that: A plurality of limiting convex ribs arranged at intervals along the outer circumference of the water-stop spring are formed on the end surface of the spring support member facing the water-stop pad, and the limiting convex ribs abut against the outer circumferential wall of one end of the water-stop spring facing the spring support member.

7. The filter element according to claim 1, characterized in that: Also includes: A central tube, the central tube is arranged in the shell, a water hole is formed on the peripheral wall of the central tube, a central channel is formed in the central tube, and a water outlet end of the central channel is connected to the water outlet; A filter material cover is arranged in the shell and is located on the side of the central tube facing the water inlet. The filter material cover, the outer wall surface of the central tube and the inner wall surface of the shell cooperate to define the containing cavity, and the containing cavity is connected to the central channel through the water hole.

8. The filter element according to claim 7, characterized in that: The filter material cover forms a through hole penetrating the filter material cover, the through hole communicates with the water inlet and the containing cavity, and a first filter screen is arranged in the through hole.

9. The filter element according to claim 1, characterized in that: Also includes: A first filter material box, wherein the first filter material box is disposed in the shell, the containing cavity is formed in the first filter material box, a water passage is defined between the outer peripheral wall of the first filter material box and the inner peripheral wall of the shell, the water passage is communicated with the water inlet, and the water passage is communicated with the water outlet through the containing cavity.

10. The filter element according to claim 9, characterized in that: The first filter material box comprises: A first box body, the first box body is in a cylindrical shape with an opening facing the water outlet, and a water hole connecting the water passage and the containing cavity is formed on an outer peripheral wall of the first box body; A first box cover, the first box cover is arranged on the open end of the first box body, the first box cover and the first box body together define the containing cavity, and an intermediate channel connecting the containing cavity and the water outlet is formed on the first box cover; The second filter screen is sleeved on the outer peripheral side of the first box body and at least covers the water through hole.

11. The filter element according to claim 1, characterized in that: It also includes a second filter material box, in which the containing cavity is formed, and the containing cavity is used to contain slow-release filter material. A slow-release hole is formed on the second filter material box, and the water inlet and the water outlet are connected to the containing cavity through the slow-release hole.

12. The filter element according to claim 11, characterized in that: The second filter material box comprises: a second box body, the second box body being in a cylindrical shape with an opening facing the water outlet; The second box cover is detachably covered on the opening end of the second box body, the second box body and the second box cover define the containing cavity, and the slow-release hole is formed on the second box cover.

13. The filter element according to claim 11, characterized in that: The outer peripheral wall of the second filter material box is spaced apart from the inner peripheral wall of the shell.

14. The filter element according to claim 1, characterized in that: The housing comprises: Shell body; The cover body is detachably covered on the open end of the shell body, and the water inlet and the water outlet are both arranged on the cover body.

15. The filter element according to claim 14, characterized in that: The cover body includes a cover body and a water outlet column, the water outlet column extends along the axial direction of the filter element, a water outlet channel connected to the water outlet interface is formed in the water outlet column, the water outlet end of the water outlet column constitutes the water outlet, a water inlet channel connected to the water inlet and located on the outer peripheral side of the water outlet column is defined between the water outlet column and the cover body, the water sealing structure is arranged in the water inlet channel, and the containing chamber is located on the side of the water outlet channel away from the water outlet.

16. The filter element according to claim 15, characterized in that A one-way valve is arranged in the water outlet passage for one-way conduction in a direction close to the water outlet.

17. A filter element assembly, characterized in that: include: A socket is formed with a water inlet interface and a water outlet interface; A filter element, wherein the filter element is a filter element according to any one of claims 1 to 16, wherein the filter element is detachably arranged on the socket, wherein the water inlet is suitable for communicating with the water inlet interface, and the water outlet is suitable for communicating with the water outlet interface.

18. The filter element assembly according to claim 17, characterized in that: A water inlet hole and a water outlet hole are also formed in the socket, the water inlet hole is suitable for connecting the water inlet interface and the water inlet, the water outlet hole is suitable for connecting the water outlet interface and the water outlet, and a valve assembly is provided in the socket, and the valve assembly has a conducting state and a blocking state; Wherein, after the filter element is assembled with the socket, the valve assembly is in the conducting state, the water inlet is communicated with the water inlet interface, and the water outlet is communicated with the water outlet interface; After the filter element is separated from the socket, the valve assembly is in the cut-off state, the water inlet hole is isolated from the water inlet interface, and the water outlet hole is isolated from the water outlet interface.

19. The filter element assembly according to claim 18, characterized in that: In the on state, the water inlet interface is isolated from the water outlet interface; in the off state, the water inlet interface is connected to the water outlet interface.

20. The filter element assembly according to claim 19, characterized in that A first installation cavity, a second installation cavity and a communication cavity are formed in the connection seat, the first installation cavity and the second installation cavity are separated from each other, the valve assembly includes a first stop valve and a second stop valve, the first installation cavity is provided with a first stop valve, the first stop valve includes a first valve seat and a first valve core, a first communication channel connected to the water inlet interface is formed in the first valve seat, the first valve core is movably arranged in the first communication channel between a first position and a second position, a second stop valve is provided in the second installation cavity, the second stop valve includes a second valve seat and a second valve core, a second communication channel connected to the water outlet interface is formed in the second valve seat, and the second valve core is movably arranged in the second communication channel between a third position and a fourth position; Wherein, when the valve assembly is in the conducting state, the first valve core is in the first position and the second valve core is in the third position, the first communication channel is connected with the water inlet interface and the water inlet hole, the second communication channel is connected with the water outlet interface and the water outlet hole, and the first communication channel and the second communication channel are both isolated from the communication cavity; When the valve assembly is in the cut-off state, the first valve core is in the second position and the second valve core is in the fourth position, the first communicating channel is separated from the water inlet hole, the second communicating channel is separated from the water outlet hole, and the first communicating channel is connected to the second communicating channel through the communicating cavity.

21. A water heater assembly, characterized in that: include: A water heater and a filter element assembly according to any one of claims 17 to 20, wherein the filter element assembly is connected to the water heater and is used for processing water flow.

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