Filter cartridge assembly and water purifier

Abstract

The application provides a filter core assembly and a water purifier, and relates to the technical field of water purification. The filter core assembly comprises a filter core, a clamping part, a filter seat, a supporting mechanism and a magnetic attraction part. The clamping part is fixed to the end of the filter core body, the filter seat surrounds an installation space, and the clamping part extends into the inside of the installation space. The supporting mechanism is arranged in the inside of the filter seat, the supporting mechanism surrounds a limiting opening, the diameter of the limiting opening can be adjusted, the magnetic attraction part is arranged on the filter seat, and the magnetic attraction part can be switched between a first state and a second state. When the magnetic attraction part is in the first state, the magnetic attraction part and the supporting mechanism are attracted to each other, the diameter of the limiting opening is greater than the maximum size of the clamping part. When the magnetic attraction part is in the second state, the supporting mechanism is released, at least part of the clamping part is located on the downside of the limiting opening, and the diameter of the limiting opening is smaller than the maximum diameter of the clamping part. The filter core assembly can solve the problems that the filter core is difficult to twist and the working strength is large when the filter core is disassembled in the existing water purifier.

Description

Technical Field

[0001] This application relates to the field of water purification technology, and in particular to a filter cartridge assembly and a water purifier. Background Technology

[0002] As living standards improve, people have higher and higher requirements for the quality of household water, leading to the widespread use of water purifiers. Water purifiers are generally installed on water supply pipes to filter and purify tap water. The purification function of a water purifier is mainly achieved through filter cartridges; to ensure water quality, these cartridges need to be replaced regularly.

[0003] Existing water purifiers generally include a filter cartridge and a filter base. The filter cartridge is usually fixed to the filter base by screwing it on. However, when replacing the filter cartridge in a water purifier, the original filter cartridge needs to be removed. Since the weight of the filter cartridge increases after water is passed through it, the interaction force between the filter cartridge and the filter base increases, making it difficult to twist the filter cartridge and requiring a lot of work to remove it. Summary of the Invention

[0004] In view of this, this application provides a filter cartridge assembly and a water purifier to solve the problems in existing water purifiers where it is difficult to twist the filter cartridge when replacing it and the work is too strenuous when disassembling the filter cartridge.

[0005] According to another aspect of this application, a filter element assembly is provided, the filter element assembly including a filter element, a locking part, a filter seat, a support mechanism and a magnetic suction part, the locking part being fixed to the end of the filter element body, the filter seat enclosing an installation space, and the locking part extending into the interior of the installation space;

[0006] The supporting mechanism is disposed inside the filter seat, and the supporting mechanism surrounds a limiting opening. The diameter of the limiting opening is adjustable. The magnetic suction part is disposed on the filter seat and the magnetic suction part can switch between a first state and a second state.

[0007] When the magnetic suction part is in the first state, the magnetic suction part attracts the supporting mechanism, and the diameter of the limiting opening is greater than the maximum size of the engaging part;

[0008] When the magnetic suction part is in the second state, the supporting mechanism is released, and at least a portion of the engaging part is located below the limiting opening, the diameter of the limiting opening being smaller than the maximum diameter of the engaging part.

[0009] Preferably, the filter base includes a limiting surface that encloses the installation space, and the diameter of the limiting surface gradually decreases in the direction from the filter base to the filter element.

[0010] The supporting mechanism includes a supporting part and a plurality of limiting balls. The plurality of limiting balls surround the limiting opening. The supporting part is disposed at the lower end of the plurality of limiting balls. The supporting part can move along the axial direction to drive the limiting balls to move.

[0011] Preferably, the filter element assembly further includes an elastic portion, the two ends of which abut against the inner wall of the filter seat and the support portion, respectively, and the elastic portion is capable of extending or contracting along the axial direction.

[0012] Preferably, the support portion includes a plurality of placement grooves, the placement grooves being recessed into the interior of the support portion from the end of the support portion facing the filter element, the plurality of placement grooves corresponding one-to-one with the plurality of limiting balls, and the limiting balls being located in the corresponding placement grooves;

[0013] The depth of the mounting groove gradually increases in the direction from the edge of the support portion toward the center of the support portion.

[0014] Preferably, the engaging portion includes a first engaging member, a second engaging member, and a third engaging member connected in sequence. In the direction from the first engaging member to the third engaging member, the diameter of the first engaging member gradually expands, and the diameter of the third engaging member gradually decreases. The maximum diameter of the first engaging member is equal to the diameter of the second engaging member, and the maximum diameter of the third engaging member is equal to the diameter of the second engaging member.

[0015] Preferably, the number of the limiting balls is even, and two limiting balls are divided into a group, with the two limiting balls in each group facing each other in the radial direction;

[0016] When the magnetic suction part is in the first state, the distance between the two limiting balls in any group is greater than the diameter of the second engaging member;

[0017] When the magnetic attraction part is in the second state, the distance between the two limiting balls in any group is less than the diameter of the second engaging member.

[0018] Preferably, the filter element assembly further includes a guide portion disposed inside the filter base, and the inner sidewall of the guide portion encloses the installation space;

[0019] The guide portion includes a first guide member and a second guide member. The second guide member is connected to the side of the first guide member facing the magnetic attraction portion. In the direction from the first guide member to the second guide member, the inner diameter of the second guide member gradually increases, and the inner diameter of the first guide member is smaller than the minimum inner diameter of the second guide member.

[0020] When the limiting ball abuts against the first guide member, the diameter of the limiting opening is smaller than the maximum diameter of the engaging portion.

[0021] Preferably, the supporting portion includes a first supporting member and a second supporting member, wherein the second supporting member is connected to the side of the first supporting member facing the magnetic suction portion;

[0022] In the direction from the first support member to the second support member, the outer diameter of the second support member gradually increases, and the first support member extends toward the interior of the second support member relative to the second support member, with the plurality of limiting balls all supported on the first support member.

[0023] Preferably, the magnetic suction part is an electromagnetic valve.

[0024] According to another aspect of this application, a water purifier is provided, the water purifier including the above-described filter assembly.

[0025] In the filter element assembly of this application, before the filter element is disassembled, the magnetic suction part is in a second state, and at least part of the engaging part is located below the limiting port. At this time, the diameter of the limiting port is smaller than the maximum diameter of the engaging part, and the engaging part cannot move upward from the limiting port, that is, the engaging part and the filter element are fixed on the filter base. When the filter element is disassembled, the magnetic suction part switches to the second state, and the magnetic suction part attracts the supporting mechanism, which increases the diameter of the limiting port. The diameter of the limiting port is larger than the maximum size of the engaging part, and the engaging part can move upward from the limiting port. In this way, by switching the magnetic suction part between the first and second states, the filter element can be disassembled without twisting the filter element, reducing the workload of filter element disassembly. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 An exploded view of a filter element assembly according to an embodiment of the present invention is shown;

[0028] Figure 2 A three-dimensional structural schematic diagram of a filter element assembly according to an embodiment of the present invention is shown;

[0029] Figure 3 A schematic diagram of the planar structure of a filter element assembly according to an embodiment of the present invention is shown;

[0030] Figure 4 Show Figure 3Cross-sectional view of the middle filter element assembly obtained by cutting along A-A';

[0031] Figure 5 Show Figure 4 Enlarged view of section B;

[0032] Figure 6 A schematic diagram of the support structure is shown.

[0033] Icons: 1-Filter element; 2-Clamping part; 21-First clamping component; 22-Second clamping component; 23-Third clamping component; 24-Connecting component; 3-Filter base; 4-Magnetic suction part; 5-Supporting mechanism; 51-Supporting part; 511-First support component; 512-Second support component; 513-Third support component; 514-Installation groove; 52-Limiting ball; 6-Elastic part; 7-Guide part; 71-First guide component; 72-Second guide component; 73-Third guide component; 8-Water outlet component; 81-Water inlet pipe; 82-Pure water outlet pipe; 83-Wastewater outlet pipe; 84-Cylinder part; 91-Housing shell; 92-Button. Detailed Implementation

[0034] The following detailed embodiments are provided to help the reader gain a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatus, and / or systems described herein will be apparent after understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein; changes that will be apparent after understanding the disclosure of this application are possible, except for operations that must occur in a specific order. Furthermore, for clarity and brevity, descriptions of features known in the art may be omitted.

[0035] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many feasible ways of implementing the methods, apparatus, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0036] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, it may be directly "on" another element, "connected to" another element, "bonded to" another element, "on" another element, or "covering" another element, or there may be one or more other elements in between. In contrast, when an element is described as being "directly on" another element, "directly connected to" another element, "directly bonded to" another element, "directly on" another element, or "directly covering" another element, there may be no other elements in between.

[0037] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0038] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0039] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relation terms used herein will be interpreted accordingly.

[0040] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0041] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0042] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have a wide variety of constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application.

[0043] According to this application, a filter element assembly is provided, such as... Figures 1 to 5 As shown, the filter element assembly includes a filter element 1, a locking part 2, a filter base 3, a supporting mechanism 5, and a magnetic suction part 4. The locking part 2 is fixed to the end of the filter element 1 body. The filter base 3 encloses an installation space, and the locking part 2 extends into the installation space. The supporting mechanism 5 is disposed inside the filter base 3 and encloses a limiting opening. The diameter of the limiting opening is adjustable. The magnetic suction part 4 is disposed on the filter base 3 and can switch between a first state and a second state. When the magnetic suction part 4 is in the first state, the magnetic suction part 4 attracts the supporting mechanism 5, and the diameter of the limiting opening is greater than the maximum size of the locking part 2. When the magnetic suction part 4 is in the second state, the supporting mechanism 5 is released, and at least a portion of the locking part 2 is located below the limiting opening, and the diameter of the limiting opening is smaller than the maximum diameter of the locking part 2.

[0044] In the filter element assembly of this application, before the filter element 1 is disassembled, the magnetic suction part 4 is in the second state, and at least a portion of the engaging part 2 is located below the limiting port. At this time, the diameter of the limiting port is smaller than the maximum diameter of the engaging part 2, and the engaging part 2 cannot move upward from the limiting port, that is, the engaging part 2 and the filter element 1 are fixed on the filter base 3. When the filter element 1 is disassembled, the magnetic suction part 4 switches to the second state, and the magnetic suction part 4 attracts the supporting mechanism 5, which increases the diameter of the limiting port. The diameter of the limiting port is larger than the maximum size of the engaging part 2, and the engaging part 2 can move upward from the limiting port. In this way, by switching between the first and second states of the magnetic suction part 4, the filter element 1 can be disassembled without twisting the filter element 1, reducing the workload of disassembling the filter element 1.

[0045] Furthermore, the filter seat 3 includes a limiting surface (the limiting surface is the inner wall surface of the second guide member 72 in the guide part 7 described below), the limiting surface encloses the installation space, and the diameter of the limiting surface gradually decreases in the direction from the filter seat 3 to the filter element 1; the support mechanism 5 includes a support part 51 and a plurality of limiting balls 52, the edges of the plurality of limiting balls 52 enclose a limiting opening, the support part 51 is disposed at the lower end of the plurality of limiting balls 52, and the support part 51 can move in the axial direction to drive the limiting balls 52 to move. When the filter element 1 is installed on the filter base 3, the engaging part 2 is located below the plurality of limiting balls 52. At this time, the diameter of the limiting opening formed by the plurality of limiting balls 52 is smaller than the maximum diameter of the engaging part. When the magnetic suction part 4 switches to the first state, the magnetic suction part 4 and the supporting part 51 attract each other, and the supporting part 51 moves downward, thereby causing the plurality of limiting balls 52 to move downward. At this time, the diameter of the limiting opening increases, and the diameter of the limiting opening is larger than the maximum diameter of the engaging part 2. At this time, the engaging part 2 can move upward from the limiting opening.

[0046] In the embodiments of this application, such as Figure 4 and Figure 5 As shown, the filter element assembly also includes a guide portion 7. The filter base 3 has a hollow structure, and the guide portion 7 is disposed inside the filter base 3. The inner wall of the guide portion 7 encloses an installation space. The guide portion 7 includes a first guide member 71 and a second guide member 72. The second guide member 72 is connected to the side of the first guide member 71 facing the magnetic suction part 4. In the direction from the first guide member 71 to the second guide member 72 (i.e., Figure 4 and Figure 5 From a top-down perspective, the inner diameter of the second guide 72 gradually increases, while the inner diameter of the first guide 71 is smaller than the minimum inner diameter of the second guide 72. When the limiting ball 52 abuts against the first guide 71, the diameter of the limiting opening is smaller than the maximum diameter of the engaging part 2, and the inner wall surface of the second guide 72 is the limiting surface.

[0047] Optionally, the guide portion 7 includes a third guide member 73, which is connected to the lower end of the second guide member 72, and the inner diameter of the third guide member 73 is equal to the maximum diameter of the second guide member 72.

[0048] It should be noted that the above description of the first guide 71, the second guide 72 and the third guide 73 is only for the purpose of explaining the shape of the guide part 7. In the entity of the guide part 7, there is no dividing line between the first guide 71 and the second guide 72 and between the second guide 72 and the third guide 73. The first guide 71, the second guide 72 and the third guide 73 are integrally formed.

[0049] In the embodiments of this application, such as Figure 4 and Figure 5As shown, the support portion 51 includes a first support member 511 and a second support member 512. The second support member 512 is connected to the side of the first support member 511 facing the magnetic suction portion 4. In the direction from the first support member 511 to the second support member 512, the outer diameter of the second support member 512 gradually increases. The first support member 511 extends relative to the second support member 512 toward the center of the second support member 512. Multiple limiting balls 52 are all supported on the first support member 511. When the support portion 51 moves upward along the second guide member 72, the diameter of the limiting opening formed by the edges of the multiple limiting balls 52 decreases as the multiple limiting balls 52 move upward. When the multiple limiting balls 52 move downward, the diameter of the limiting opening formed by the edges of the multiple limiting balls 52 increases.

[0050] Optionally, the support portion 51 further includes a third support member 513, which is connected to the side of the second support member 512 opposite to the first support member 511. The outer diameter of the third support member 513 is equal to the maximum outer diameter of the second support member 512, which causes the support portion 51 to enclose a cavity, and the elastic portion 6 described below is partially disposed inside the cavity.

[0051] It should be noted that the above description of the first support member 511, the second support member 512, and the third support member 513 is only for the purpose of explaining the shape of the support part 51. In the entity of the support part 51, the first support member 511, the second support member 512, and the third support member 513 are three parts of the support part 51. There is no dividing line between the first support member 511 and the second support member 512, or between the second support member 512 and the third support member 513. The first support member 511, the second support member 512, and the third support member 513 are integrally formed.

[0052] In the embodiments of this application, the filter element assembly further includes an elastic portion 6, the two ends of which abut against the inner wall of the filter base 3 and the support portion 51, respectively. The elastic portion 6 can extend or contract in the axial direction. The elastic portion 6 can apply force to the support portion 51 to facilitate the insertion and removal of the engaging portion 2, thereby realizing the installation and removal of the filter element 1.

[0053] Preferably, the elastic part 6 is a spring.

[0054] In the embodiments of this application, such as Figure 4 and Figure 5 As shown, the engaging part 2 includes a first engaging member 21, a second engaging member 22, and a third engaging member 23 connected in sequence. In the direction from the first engaging member 21 to the third engaging member 23, the diameter of the first engaging member 21 gradually expands, and the diameter of the third engaging member 23 gradually decreases. The maximum diameter of the first engaging member 21 is equal to the diameter of the second engaging member 22, and the maximum diameter of the third engaging member 23 is equal to the diameter of the second engaging member 22.

[0055] Optionally, the locking part 2 also includes a connecting member 24, which is connected to the upper end of the third locking member 23 and connected to the filter element 1, thereby realizing the fixation between the entire locking part 2 and the filter element 1.

[0056] It should be noted that the above description of the first latching component 21, the second latching component 22, the third latching component 23, and the connecting component 24 is only for the purpose of illustrating the shape of the latching part 2. In the entity of the latching part 2, there are no dividing lines between the four parts of the first latching component 21, the second latching component 22, the third latching component 23, and the connecting component 24, between the first latching component 21 and the second latching component 22, between the second latching component 22 and the third latching component 23, and between the third latching component 23 and the connecting component 24. The first latching component 21, the second latching component 22, the third latching component 23, and the connecting component 24 are integrally formed.

[0057] In the filter element assembly, the side facing the axis is defined as the inner side, and the side away from the axis is defined as the outer side. During the installation of filter element 1, the engaging part 2 moves downward, and the first engaging member 21 first contacts the multiple limiting balls 52. As the diameter of the first engaging member 21 gradually increases, under the compression of the first engaging member 21, the multiple limiting balls 52 move outward, the supporting part 51 moves downward, the elastic part 6 is compressed, and the diameter of the limiting opening increases. The engaging part 2 continues to move downward, and the second engaging member 22 contacts the multiple limiting balls 52. At this time, the diameter of the limiting opening remains unchanged. Then, the engaging part 2 continues to move downward, and the third engaging member 23 contacts the multiple limiting balls 52. As the diameter of the third engaging member 23 gradually decreases, the multiple limiting balls 52 gradually move inward, making the diameter of the limiting opening smaller than the diameter of the third engaging member 23. The elastic part 6 extends, and the supporting part 51 moves upward. At this point, the filter element 1 is installed. If the engaging part 2 and filter element 1 are then pulled upwards, the multiple limiting balls 52 move upwards, and the diameter of the limiting opening continues to shrink. The engaging part 2 cannot be pulled out of the limiting opening, and thus the engaging part 2 cannot move upwards through the limiting opening, completing the relative fixation between the filter element 1 and the filter base 3. During disassembly, the magnetic suction part 4 switches to the second state, attracting the supporting part 51 downwards, causing the multiple limiting balls 52 to move downwards. The diameter of the limiting opening formed by the multiple limiting balls 52 increases until it is larger than the diameter of the third engaging part 23. At this point, the engaging part 2 can move upwards through the limiting opening, thereby realizing the upward movement of the engaging part 2 and filter element 1, and thus achieving the disassembly of the filter element 1.

[0058] Optionally, such as Figure 6As shown, the support portion 51 includes multiple mounting grooves 514, which are located on the first support member 511. The mounting grooves 514 are recessed downward from the upper surface of the first support member 511. Each mounting groove 514 corresponds to a multiple limiting ball 52, and the limiting ball 52 is located in the corresponding mounting groove 514. The depth of the mounting groove 514 gradually increases in the direction from the edge of the support portion 51 to the center of the support portion 51. The bottom surface of the mounting groove 514 is curved, which facilitates the movement of the limiting ball 52 within the mounting groove 514.

[0059] In the embodiments of this application, the centers of the plurality of limiting balls 52 are located on the same circle, the number of limiting balls 52 is even, two limiting balls 52 are divided into a group, and the two limiting balls 52 in each group are opposite to each other in the radial direction; when the magnetic suction part 4 is in the first state, the distance between the two limiting balls 52 in any group is greater than the diameter of the second locking member 22; when the magnetic suction part 4 is in the second state, the distance between the two limiting balls 52 in any group is less than the diameter of the second locking member 22.

[0060] Preferably, there are four placement slots 514, which are equidistantly spaced on the first support member 511. There are also four limiting balls 52, which are placed in the four placement slots 514 respectively.

[0061] In the embodiments of this application, such as Figure 2 , Figure 3 and Figure 4 As shown, the filter element assembly also includes a water outlet 8 and a housing 91. The water outlet 8 is located outside the filter element 1, and the housing 91 is also fixed outside the filter element 1, with the housing 91 located above the water outlet 8.

[0062] Furthermore, the water outlet component 8 includes a cylindrical part 84, an inlet pipe 81, a wastewater outlet pipe 83, and a pure water outlet pipe 82. The cylindrical part 84 is sleeved on the outside of the filter element 1. Three fixing holes are provided on the cylindrical part 84, and the inlet pipe 81, the wastewater outlet pipe 83, and the pure water outlet pipe 82 are respectively fixed in the three fixing holes.

[0063] Optionally, the water inlet, wastewater outlet, and water outlet of filter element 1 are all located on the side of filter element 1, and the water inlet, wastewater outlet, and water outlet are connected to the water inlet pipe 81, the wastewater outlet pipe 83, and the pure water outlet pipe 82, respectively.

[0064] Preferably, the magnetic suction part 4 is a solenoid valve, and the support part 51 is made of magnetic material. The solenoid valve includes an electromagnet. When the magnetic suction part 4 is in the first state, that is, when the solenoid valve is energized, the solenoid valve is turned on, the electromagnet is magnetic, and the electromagnet attracts the support part 51 to move downward, causing multiple limit balls 52 to move downward, thereby increasing the diameter of the limiting port, so that the engaging part 2 can move upward through the limiting port to realize the disassembly of the filter element 1. When the magnetic suction part 4 is in the second state, that is, when the solenoid valve is de-energized, the electromagnet is not magnetic, and under the action of the elastic part 6, the support part 51 moves upward, causing multiple limit balls 52 to move upward, and the diameter of the limiting port decreases.

[0065] When the magnetic suction part 4 is in the second state, that is, when the battery valve is de-energized, the filter element 1 can be installed. The locking part 2 moves downward and the multiple limiting balls 52 move outward. When the filter element 1 is installed, that is, when the filter element 1 no longer moves downward, the multiple limiting balls 52 are located between the third locking member 23 and the first guide member 71 of the locking part 2. At this time, the upward movement of the locking part 2 is blocked by the multiple limiting balls 52. The multiple limiting balls 52 limit the position of the locking member, thereby realizing the fixation between the filter element 1 and the filter base 3.

[0066] Furthermore, such as Figure 2 As shown, a button 92 is also provided on the housing 91. The button 92 is connected to the solenoid valve, and pressing the button 92 can control the energization and de-energization of the solenoid valve. In this way, when disassembling the filter element 1, only pressing the button 92 is needed to pull out the filter element 1, thus reducing the labor intensity of the operator.

[0067] According to another aspect of this application, a water purifier is provided, which includes the above-described filter element assembly and has the same technical effects as the above-described filter element assembly, which will not be described in detail here.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filter cartridge assembly characterized by, The filter core assembly comprises a filter core, a clamping part, a filter seat, a supporting mechanism and a magnetic part, the clamping part is fixed to the end of the filter core body, the filter seat surrounds an installation space, and the clamping part extends into the inside of the installation space; The supporting mechanism is arranged in the inside of the filter seat, the supporting mechanism surrounds a limiting opening, the diameter of the limiting opening can be adjusted, the magnetic part is arranged on the filter seat, and the magnetic part can be switched between a first state and a second state; When the magnetic part is in the first state, the magnetic part attracts the supporting mechanism, and the diameter of the limiting opening is greater than the maximum size of the clamping part; When the magnetic part is in the second state, the supporting mechanism is released, at least part of the clamping part is located on the lower side of the limiting opening, and the diameter of the limiting opening is smaller than the maximum diameter of the clamping part; The filter seat comprises a limiting surface, the limiting surface surrounds the installation space, and the diameter of the limiting surface gradually decreases in the direction in which the filter seat points to the filter core; The supporting mechanism comprises a supporting part and a plurality of limiting balls, the plurality of limiting balls surround the limiting opening, the supporting part is arranged at the lower end of the plurality of limiting balls, and the supporting part can move in the axial direction to drive the limiting balls to move; The clamping part comprises a first clamping piece, a second clamping piece and a third clamping piece connected in sequence, the diameter of the first clamping piece gradually increases in the direction in which the first clamping piece points to the third clamping piece, the diameter of the third clamping piece gradually decreases, the maximum diameter of the first clamping piece is equal to the diameter of the second clamping piece, and the maximum diameter of the third clamping piece is equal to the diameter of the second clamping piece.

2. The filter cartridge assembly of claim 1, wherein, The filter core assembly further comprises an elastic part, two ends of the elastic part respectively abut against the inner wall of the filter seat and the supporting part, and the elastic part can be elongated or contracted in the axial direction.

3. The filter cartridge assembly of claim 1, wherein, The supporting part comprises a plurality of arrangement grooves, the arrangement grooves are recessed from the end face of the supporting part towards the inside of the supporting part, the plurality of arrangement grooves correspond to the plurality of limiting balls one by one, and the limiting balls are located in the corresponding arrangement grooves; In the direction in which the edge of the supporting part points to the center of the supporting part, the depth of the arrangement groove gradually increases.

4. The filter cartridge assembly of claim 1, wherein, The number of the limiting balls is even, two limiting balls in each group are opposite to each other in the radial direction; When the magnetic part is in the first state, the distance between the two limiting balls in any group is greater than the diameter of the second clamping piece; When the magnetic part is in the second state, the distance between the two limiting balls in any group is smaller than the diameter of the second clamping piece.

5. The filter cartridge assembly of claim 1, wherein, The filter core assembly further comprises a guide part, the guide part is arranged in the inside of the filter seat, and the inner side wall of the guide part surrounds the installation space. The guide part comprises a first guide member and a second guide member, the second guide member is connected with a side of the first guide member facing the magnetic attraction part, in a direction in which the first guide member points to the second guide member, an inner diameter of the second guide member gradually increases, and an inner diameter of the first guide member is smaller than a minimum inner diameter of the second guide member; When the limiting ball abuts against the first guide member, a diameter of the limiting hole is smaller than a maximum diameter of the clamping part.

6. The filter cartridge assembly of claim 5, wherein, The supporting part comprises a first supporting member and a second supporting member, the second supporting member is connected with a side of the first supporting member facing the magnetic attraction part; In a direction in which the first supporting member points to the second supporting member, an outer diameter of the second supporting member gradually increases, the first supporting member extends towards an inside of the second supporting member relative to the second supporting member, and the plurality of limiting balls are all carried on the first supporting member.

7. The filter cartridge assembly of any of claims 1-6, wherein, The magnetic attraction part is an electromagnetic valve.

8. A water purifier characterized by comprising: The water purifier comprises the filter element assembly according to any one of claims 1-7.

Images