Filter element mounting structure and water purifier

Abstract

The utility model discloses a filter element mounting structure and a water purifier, the filter element mounting structure comprises: a filter element, the bottom of which is provided with a cylindrical connecting part; the waterway plate is provided with a concave accommodating groove with an upward opening, and the connecting part is inserted into the accommodating groove from top to bottom in an assembly state; the locking plate is arranged on the water path plate, the locking plate is of an annular structure, the locking plate surrounds the periphery of the connecting part in the assembling state, and the locking plate can rotate around the axis of the filter element relative to the water path plate in a reciprocating mode so as to lock or unlock the filter element. The filter element mounting structure disclosed by the utility model has the characteristics of simple structure and convenience in mounting and replacement of the filter element, and the filter element can be stably and reliably mounted in the water purifier.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifiers, in particular to a filter element installation structure and a water purifier. Background Art

[0002] A water purifier, also known as a water purification device or water filter, is a water treatment device that deeply filters and purifies raw water. Currently, water purifiers are often used in daily production and life. Generally, they are connected in series to the water pipeline through a connecting pipe to play the role of purifying water quality. During the purification process, the filter element of the water purifier has a certain service life. After being used for a period of time, the purification ability of the filter element will deteriorate, and the filter element needs to be frequently replaced. Therefore, the installation structure of the filter element needs to be convenient and reliable.

[0003] Chinese Patent CN207062011 U discloses a composite filter element assembly, which uses a safety buckle and a water circuit board to form a closed space, and locks the top of the filter element in the closed space to achieve the locking of the filter element. The locking of the filter element in this composite filter element assembly mainly depends on the top of the filter element being locked in the closed space formed by the safety buckle and the water circuit board, while the main body of the filter element and the main stress-bearing parts of the filter element are not locked. When this composite filter element assembly is installed in the housing of the water purifier, the stable and reliable installation of the filter element cannot be guaranteed. Summary of the Utility Model

[0004] In order to overcome at least one of the above-mentioned defects of the prior art, the utility model provides a filter element installation structure, which has the characteristics of simple structure, convenient installation and replacement of the filter element, and the filter element can be stably and reliably installed in the water purifier.

[0005] The technical solution adopted by the utility model to solve its problems is:

[0006] A filter element installation structure, comprising:

[0007] A filter element, the bottom of the filter element is provided with a cylindrical connecting portion;

[0008] A water circuit board, the water circuit board is provided with a receiving groove that opens upward and is concave. In the assembled state, the connecting portion is inserted into the receiving groove from top to bottom;

[0009] A locking plate, the locking plate is arranged on the water circuit board, the locking plate has an annular structure, and in the assembled state, the locking plate surrounds the connecting portion. The locking plate can rotate relative to the water circuit board around the axis of the filter element to lock or unlock the filter element.

[0010] Further, at least one limiting member is provided on the outer periphery of the connecting portion in the radial direction. An unlocking channel adapted to the limiting member is formed by the inner wall of the locking plate concave away from the connecting portion, so that the limiting member can slide through the unlocking channel. The number of unlocking channels is equal to the number of limiting members. The locking plate reciprocally rotates relative to the water circuit board around the axis of the filter element to make the corresponding unlocking channels and limiting members vertically opposite or vertically displaced, thereby unlocking or locking the connecting portion.

[0011] Further, the filter element mounting structure further includes a filter element seat. The water circuit board is fixed to the bottom of the filter element seat, and the locking plate is located between the filter element seat and the water circuit board. The filter element seat is provided with a guiding groove adapted to the connecting portion. The guiding groove and the receiving groove are arranged vertically corresponding to each other, so that the connecting portion passes through the locking plate via the guiding groove and is inserted into the receiving groove.

[0012] Further, a guiding channel adapted to the limiting member is formed by the groove wall of the guiding groove concave away from the connecting portion. The number of guiding channels is equal to the number of limiting members. In the assembled state, the guiding channels and the corresponding limiting members are vertically opposite to each other.

[0013] Further, the filter element seat includes a bottom plate and a side plate. The side plate extends upward from the edge of the bottom plate to form a semi-surrounding structure and is adapted to the filter element. The guiding groove is provided on the bottom plate.

[0014] Further, an upwardly penetrating clamping groove is provided in the upper part of the side plate. A clamping protrusion adapted to the clamping groove is convexly provided on the outer side wall of the lower part of the filter element. In the assembled state, the clamping protrusion is clamped in the clamping groove.

[0015] Further, the outer edge of the locking plate extends away from the connecting portion to the outside of the water circuit board to form a pushing portion;

[0016] The water circuit board is mounted on the mounting seat. The mounting seat is provided with a pushing member that can reciprocally rotate relative to the mounting seat around the axis of the filter element. The pushing member pushes the pushing portion to rotate synchronously to unlock the filter element, or the pushing portion pushes the pushing member to rotate in the reverse direction to lock the filter element.

[0017] Further, a limiting groove is provided on the pushing portion corresponding to the pushing member. The limiting groove extends along the rotation direction of the pushing portion. The pushing member is reciprocally rotatably arranged in the limiting groove.

[0018] Further, the pushing portion and the water circuit board are elastically connected by an elastic member. The elastic member is arranged along the rotation direction of the pushing portion. In the unlocked state, the elastic member is in a compressed state.

[0019] The present utility model further provides a water purifier, including: a housing and a filter element mounting structure. An installation cavity is provided in the housing, and the filter element mounting structure is mounted in the installation cavity.

[0020] The beneficial effects of the filter element mounting structure and the water purifier provided by the present utility model are as follows:

[0021] By providing a connecting portion at the bottom of the filter element for insertion into the water circuit board, and arranging a locking plate on the water circuit board that can reciprocally rotate around the axis of the filter element, the locking plate surrounds the connecting portion in the assembled state to achieve locking or unlocking of the connecting portion through reciprocal rotation. Since the water circuit board is provided at the bottom of the filter element to allow water to flow between the two, the overall stress point of the filter element is at the bottom, that is, the bottom of the filter element is concentratedly stressed. The present utility model installs the locking structure of the filter element at the bottom of the filter element, which can improve the stability of the locking structure, making the installation of the filter element in the water purifier stable and reliable. Moreover, the locking structure of the filter element of the present utility model realizes the locking or unlocking of the filter element and the water circuit board by the reciprocal rotation of the locking plate around the axis of the filter element. The structure is simple and the installation is convenient, facilitating the replacement of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the water purifier of the present utility model;

[0023] Figure 2 is an exploded view of the water purifier of the present utility model;

[0024] Figure 3 is Figure 2 an enlarged view of part A in

[0025] Figure 4 is a partial exploded view of the filter element, water circuit board, locking plate and filter element seat of the present utility model;

[0026] Figure 5 is Figure 4 an enlarged view of part B in

[0027] Figure 6 is an assembly diagram of the water circuit board, locking plate and filter element seat of the present utility model;

[0028] Figure 7 is a schematic structural diagram of the filter element seat of the present utility model;

[0029] Figure 8 is an assembly diagram of the water circuit board, locking plate and elastic member of the present utility model.

[0030] Among them, the meanings of the reference numerals are as follows:

[0031] 1. Filter element; 11. Connecting part; 12. Limiting part; 13. Clamping projection; 14. Filter element body; 2. Water circuit board; 21. Accommodating groove; 22. Raw water inlet; 23. Pure water outlet; 24. Concentrated water outlet; 25. Rotating groove; 3. Locking plate; 31. Unlocking channel; 32. Pushing part; 33. Limiting groove; 34. Locking body; 4. Filter element seat; 41. Wire groove; 42. Guide channel; 43. Bottom plate; 44. Side plate; 45. Card slot; 5. Mounting seat; 51. Pushing piece; 52. Sliding groove; 6. Elastic piece; 7. Shell; 71. Installation cavity; 72. Shell body; 73. Sealing part. Detailed implementation mode

[0032] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0035] The present invention provides a filter element installation structure. Refer to Figure 4 and Figure 8 , the filter element installation structure includes a filter element 1, a water circuit board 2 and a locking plate 3. Among them, a cylindrical connecting part 11 is provided at the bottom of the filter element 1, and the water circuit board 2 is provided with an upward-opening and downward-concave accommodating groove 21. In the assembled state, the connecting part 11 is inserted into the accommodating groove 21 from top to bottom. The locking plate 3 is arranged on the water circuit board 2. The locking plate 3 has an annular structure and surrounds the connecting part 11 in the assembled state. The locking plate 3 can rotate reciprocally relative to the water circuit board 2 around the axis of the filter element 1 to lock or unlock the filter element 1.

[0036] Thus, the filter element installation structure of the present utility model is provided with a connecting portion 11 at the bottom of the filter element 1 for plugging into the water circuit board 2, and a locking plate 3 that can reciprocally rotate around the axis of the filter element 1 is provided on the water circuit board 2. In the assembled state, the locking plate 3 surrounds the connecting portion 11 to achieve locking or unlocking of the connecting portion 11 through reciprocal rotation. Since the water circuit board 2 is provided at the bottom of the filter element 1 to allow water to flow between the two, the overall force-bearing point of the filter element 1 is at the bottom, that is, the bottom of the filter element 1 is concentratedly stressed. The present utility model installs the locking structure of the filter element 1 at the bottom of the filter element 1, which can improve the stability of the locking structure, making the filter element 1 have the characteristics of stable and reliable installation in the water purifier. Moreover, the locking structure of the filter element 1 of the present utility model uses the reciprocal rotation of the locking plate 3 around the axis of the filter element 1 to achieve locking or unlocking of the filter element 1 and the water circuit board 2. The structure is simple and the installation is convenient, facilitating the replacement of the filter element 1.

[0037] Refer to Figure 4 , in the present utility model, the filter element 1 includes a cylindrical filter element body 14. The filter element body 14 is vertically arranged, and the cylindrical connecting portion 11 is vertically provided at the center of the bottom of the filter element body 14. Three water circuit interfaces are opened at the bottom of the connecting portion 11, respectively for raw water, pure water, and concentrated water to flow through. The arrangement mode of the three water circuit interfaces is not specifically limited and is arranged according to the water circuit connection mode of the water purifier.

[0038] Refer to Figure 6 and Figure 8 , the middle area of the water circuit board 2 is recessed downward to form a receiving groove 21 with an upward opening. The receiving groove 21 is provided with a raw water inlet 22, a pure water outlet 23, and a concentrated water outlet 24 to be correspondingly connected to the three water circuit interfaces at the bottom of the connecting portion 11 in the assembled state. In order to improve the stability of the filter element installation structure, the raw water inlet 22, the pure water outlet 23, and the concentrated water outlet 24 are evenly dispersed in the receiving groove 21.

[0039] The locking plate 3 includes an annular locking plate body 34. In the assembled state, the locking plate body 34 surrounds the connecting portion 11 and can reciprocally rotate relative to the filter element 1 around the axis of the filter element 1. The water circuit board 2 is provided with a rotation groove 25 adapted to the locking plate body 34, so that the locking plate body 34 is installed in the rotation groove 25 and reciprocally rotates relative to the water circuit board 2 around the axis of the filter element 1, thereby limiting the rotation of the locking plate body 34 through the rotation groove 25 to avoid its rotation deviation and ensure the precise locking or unlocking of the filter element 1.

[0040] Refer to Figure 5 and Figure 8, at least one limiting member 12 is provided on the radial outer periphery of the connecting portion 11. An unlocking channel 31 adapted to the limiting member 12 is formed by the inner wall of the locking plate 3 concave backward from the connecting portion 11, so that the limiting member 12 can slide through the unlocking channel 31. The number of the unlocking channels 31 is equal to the number of the limiting members 12. The locking plate 3 reciprocally rotates relative to the water circuit board 2 around the axis of the filter element 1 to make the corresponding unlocking channels 31 and the limiting members 12 vertically opposite or vertically displaced, thereby unlocking or locking the connecting portion 11.

[0041] Specifically, when there is one limiting member 12, an unlocking channel 31 adapted to the limiting member 12 is formed by the inner wall of the locking plate 3 concave backward from the connecting portion 11. When there are two or more limiting members 12, the two or more limiting members 12 are spaced apart and distributed on the radial outer periphery of the connecting portion 11 and are in the same horizontal plane. The inner wall of the locking plate 3 is concavo-convex relative to the connecting portion 11 to form two or more unlocking channels 31 adapted to the two or more limiting members 12. The number of the unlocking channels 31 is equal to the number of the connecting portions 11 and their positions correspond one by one in the non-locked state of assembly.

[0042] Before installation, the locking plate 3 is in a position where the unlocking channel 31 and the corresponding limiting member 12 are vertically opposite. During installation, the connecting portion 11 passes through the locking plate 3 from top to bottom and the limiting member 12 passes through the corresponding unlocking channel 31 so that the connecting portion 11 is inserted into the receiving groove 21. At this time, the unlocking channel 31 and the corresponding limiting member 12 are vertically opposite, and the filter element 1 is not locked. Rotate the locking plate 3 around the axis of the filter element 1 until the unlocking channel 31 and the corresponding limiting member 12 are vertically displaced. The inner wall of the convex portion of the locking plate 3 blocks above the corresponding limiting member 12 to prevent the limiting member 12 from disengaging upward, thereby locking the connecting portion 11 and completing the locking of the filter element 1. When the filter element 1 needs to be disassembled, rotate the locking plate 3 reversely around the axis of the filter element 1 until the unlocking channel 31 and the corresponding limiting member 12 are vertically opposite. The limiting member 12 can disengage upward through the corresponding unlocking channel 31, realizing the unlocking of the connecting portion 11 and the water circuit board 2, thereby completing the disassembly of the filter element 1.

[0043] The utility model realizes unlocking or locking the connecting portion 11 by reciprocally rotating the locking plate 3 around the axis of the filter element 1 to make the corresponding unlocking channels 31 and the limiting members 12 vertically opposite or vertically displaced, thereby realizing unlocking or locking the filter element 1. The structure is simple, the operation is convenient, and the locking structure is stable.

[0044] Refer to Figure 2 、 Figure 4 、 Figure 6 and Figure 7, the filter element installation structure further includes a filter element seat 4. The water circuit board 2 is fixed to the bottom of the filter element seat 4, and the locking plate 3 is located between the filter element seat 4 and the water circuit board 2. The filter element seat 4 is provided with a guide groove 41 adapted to the connecting portion 11. The guide groove 41 and the receiving groove 21 are arranged vertically corresponding to each other, so that the connecting portion 11 passes through the locking plate 3 via the guide groove 41 and is inserted into the receiving groove 21.

[0045] Specifically, the centers of gravity of the filter element seat 4, the water circuit board 2 and the filter element 1 are on a straight line to improve the stability of the installation of the filter element 1. The guide groove 41 is opened in the middle area of the filter element seat 4 and is vertically corresponding to the receiving groove 21. Thus, during installation, the connecting portion 11 passes through the locking plate 3 from top to bottom via the guide groove 41 and is inserted into the receiving groove 21.

[0046] On the one hand, the filter element seat 4 is arranged above the locking plate 3. The filter element seat 4 and the water circuit board 2 cooperate to limit the locking plate 3 vertically to ensure that the reciprocating rotation of the locking plate 3 is on a horizontal plane. On the other hand, the connecting portion 11 is connected to the water circuit board 2 through the guide groove 41 of the filter element seat 4, which can improve the accuracy and stability of the insertion of the connecting portion 11 into the receiving groove 21. Thus, the setting of the filter element seat 4 can improve the stability of the installation of the filter element 1.

[0047] The groove wall of the guide groove 41 is recessed away from the connecting portion 11 to form a guide channel 42 adapted to the limiting member 12. The number of the guide channels 42 is equal to the number of the limiting members 12. In the assembled state, the guide channels 42 and the corresponding limiting members 12 are arranged vertically opposite to each other.

[0048] Specifically, when there is one limiting member 12, the groove wall of the guide groove 41 is recessed away from the connecting portion 11 to form one guide channel 42 adapted to the limiting member 12. When there are two or more limiting members 12, the groove wall of the guide groove 41 is concave and convex away from the connecting portion 11 to form two or more guide channels 42 adapted to two or more limiting members 12. The number of the guide channels 42 is equal to the number of the limiting members 12 and they are in one-to-one correspondence in the assembled state.

[0049] Before installation, the locking plate 3 is in a position where the unlocking channel 31 is vertically opposite to the corresponding limiting member 12 and the guiding channel 42. During installation, the connecting portion 11 sequentially passes through the guiding slot 41 and the locking plate 3 from top to bottom, and the limiting member 12 sequentially passes through the corresponding guiding channel 42 and the unlocking channel 31 so that the connecting portion 11 is inserted into the receiving slot 21. At this time, the unlocking channel 31 is vertically opposite to the corresponding limiting member 12 and the guiding channel 42, and the filter element 1 is not locked. Rotate the locking plate 3 around the axis of the filter element 1 until the unlocking channel 31 is vertically misaligned with the corresponding limiting member 12 and the guiding channel 42. The inner wall of the convex portion of the locking plate 3 blocks above the corresponding limiting member 12 to prevent the limiting member 12 from disengaging upward into the guiding channel 42, thereby locking the connecting portion 11 and completing the locking of the filter element 1. When the filter element 1 needs to be disassembled, rotate the locking plate 3 in the reverse direction around the axis of the filter element 1 until the unlocking channel 31 is vertically opposite to the corresponding limiting member 12 and the guiding channel 42. The limiting member 12 can disengage upward through the corresponding unlocking channel 31 and the guiding channel 42, realizing the unlocking of the connecting portion 11 from the water circuit board 2, and thus completing the disassembly of the filter element 1.

[0050] In the present utility model, a guiding channel 42 is provided on the groove wall of the guiding slot 41 to limit the moving direction of the limiting member 12 during the installation or disassembly of the filter element 1 through the guiding channel 42, so as to ensure the precise installation or disassembly of the filter element 1.

[0051] The filter element seat 4 includes a bottom plate 43 and a side plate 44. The side plate 44 extends upward from the edge of the bottom plate 43 to form a semi-surrounding structure and fits the filter element 1. The guiding slot 41 is opened on the bottom plate 43. Specifically, the semi-surrounding structure of the filter element seat 4 is a cylindrical structure with an upward opening to surround the lower part of the filter element body 14, improving the connection stability between the filter element 1 and the water circuit board 2.

[0052] An upwardly penetrating card slot 45 is opened in the upper part of the side plate 44. A card projection 13 adapted to the card slot 45 is convexly provided on the outer side wall of the lower part of the filter element 1. In the assembled state, the card projection 13 is clamped in the card slot 45. Specifically, the card projection 13 is provided at the lower part of the filter element body 14. The clamping structure between the card projection 13 and the card slot 45 can prevent the filter element 1 from rotating relative to the filter element seat 4, further improving the installation stability of the filter element 1.

[0053] On the basis of the above structure, referring to Figure 2 、 Figure 3 and Figure 8 , the outer edge of the locking plate 3 extends away from the connecting portion 11 to the outside of the water circuit board 2 to form a pushing portion 32. The water circuit board 2 is installed on the mounting seat 5. The mounting seat 5 is provided with a pushing member 51 corresponding to the pushing portion 32 that can reciprocally rotate relative to the mounting seat 5 around the axis of the filter element 1. The pushing member 51 pushes the pushing portion 32 to rotate synchronously to unlock the filter element 1, or the pushing portion 32 pushes the pushing member 51 to rotate in the reverse direction to lock the filter element 1.

[0054] Specifically, the outer edge of the locking body 34 extends away from the connecting portion 11 to the outside of the waterway plate 2 to form the pushing portion 32. The rotating groove 25 of the waterway plate 2 corresponds to the pushing portion 32 and extends to the edge of the waterway plate 2, and the part of the rotating groove 25 corresponding to the pushing portion 32 extends along the rotation direction of the pushing portion 32, so that the pushing portion 32 can reciprocate around the axis of the filter element 1 in the part of the rotating groove 25 to drive the locking body 34 to rotate synchronously. The mounting seat 5 is provided with a vertically arranged pushing member 51 corresponding to the pushing portion 32, and the mounting seat 5 is provided with a slide groove 52 corresponding to the pushing member 51, and the slide groove 52 extends along the rotation direction of the pushing member 51, so that the pushing member 51 can reciprocate around the axis of the filter element 1 in the slide groove 52.

[0055] It should be noted that the driving member 51 to drive the pushing portion 32 to rotate can be achieved by manual shifting or by using a shifting member, as long as the pushing member 51 can be driven to rotate around the axis of the filter element 1 to push the pushing portion 32 to unlock the filter element 1.

[0056] In the present invention, when the filter element 1 is locked, the reset of the pusher 32 needs to be achieved with the help of external force. Figure 8 The push part 32 and the waterway plate 2 are elastically connected via an elastic member 6 , and the elastic member 6 is arranged along the rotation direction of the push part 32 . In the unlocked state, the elastic member 6 is in a compressed state.

[0057] Specifically, the elastic member 5 is a spring and is disposed in the portion of the rotation groove 25 corresponding to the pushing portion 32 , along the rotation direction of the pushing portion 32 , and the two ends of the elastic member 5 are respectively connected to the pushing portion 32 and the groove wall of the rotation groove 25 .

[0058] In the normal state, i.e., before installation, the elastic member 5 is in a natural telescopic state, and the unlocking channel 31 of the locking plate 3 is vertically offset from the corresponding limiting member 12 and the guiding channel 42. During installation, the driving pushing member 51 rotates around the axis of the filter element 1 to push the pushing portion 32 to compress the elastic member 5, so that the locking plate 3 rotates until the unlocking channel 31 is vertically opposite to the corresponding limiting member 12 and the guiding channel 42. The connecting portion 11 is sequentially passed through the guiding groove 41 and the locking plate 3 from top to bottom, and the limiting member 12 is sequentially passed through the corresponding guiding channel 42 and the unlocking channel 31 so that the connecting portion 11 is inserted into the receiving groove 21. At this time, the driving of the pushing member 51 is released, the pushing member 51 does not apply a pushing force to the pushing portion 32, and the elastic force of the elastic member 5 recovering from deformation pushes the pushing portion 32 to drive the locking body 34 to rotate reversely around the axis of the filter element 1 and push the pushing member 51 to rotate reversely until the unlocking channel 31 is vertically offset from the corresponding limiting member 12 and the guiding channel 42, and the inner wall of the convex portion of the locking plate 3 blocks above the corresponding limiting member 12 to prevent the limiting member 12 from disengaging upward from the guiding channel 42, thereby locking the connecting portion 11 and completing the locking of the filter element 1. When the filter element 1 needs to be disassembled, the driving pushing member 51 rotates around the axis of the filter element 1 to push the pushing portion 32 to compress the elastic member 5, so that the locking plate 3 rotates until the unlocking channel 31 is vertically opposite to the corresponding limiting member 12 and the guiding channel 42, and the limiting member 12 can disengage upward through the corresponding unlocking channel 31 and the guiding channel 42, realizing the unlocking of the connecting portion 11 and the water circuit board 2, thereby completing the disassembly of the filter element 1.

[0059] Refer to Figure 3 and Figure 8 , a limiting groove 33 is provided on the pushing portion 32 corresponding to the pushing member 51, the limiting groove 33 extends along the rotation direction of the pushing portion 32, and the pushing member 51 is rotatably arranged in the limiting groove 33 in a reciprocating manner. In the present utility model, the limiting groove 33 vertically penetrates the pushing portion 33 so that when the pushing member 51 is inserted into the limiting groove 33, it will not jack up the pushing portion 32 upward, so as to ensure that the reciprocating rotation of the locking plate 3 is on a horizontal plane. And the pushing member 51 inserted into the limiting groove 33 can limit the reciprocating rotation of the locking plate 3 to prevent the locking plate 3 from rotating and deviating.

[0060] In addition to the above filter element installation structure, the present utility model also provides a water purifier, refer to Figure 1 and Figure 2 , the water purifier includes a housing 7 and a filter element installation structure, an installation cavity 71 is provided in the housing 7, and the filter element installation structure is installed in the installation cavity 71. Installing the above filter element installation structure in the water purifier can realize the stable and reliable installation of the filter element 1 and facilitate the disassembly of the filter element 1 from the water purifier.

[0061] Specifically, the housing 1 includes a housing body 72 and a plugging portion 73. The housing body 72 is provided with an opening, and the plugging portion 73 is installed at the opening so that the plugging portion 73 and the housing body 72 form a closed structure, and an installation cavity 71 is formed between the plugging portion 73 and the housing body 72. The mounting seat 5 is installed on the housing body 72. The water circuit board 2, the locking plate 3 and the filter element seat 4 are assembled into an integral structure from bottom to top and installed on the mounting seat 5. The locking plate 3 can reciprocally rotate around the axial direction of the filter element 1 relative to the water circuit board 2 and the filter element seat 4 to lock or unlock the filter element 1.

[0062] The installation cavity 71 is adapted to the filter element 1, and the housing body 72 and the plugging portion 73 are detachably installed. When the filter element 1 needs to be installed, the plugging portion 73 is disassembled, and the connecting portion 11 of the filter element 1 passes through the filter element seat 4 and the locking plate 3 in sequence to be plugged into the water circuit board 2. After the locking of the filter element 1 is completed, the plugging portion 73 is installed to complete the assembly of the water purifier 1.

[0063] When the filter element 1 needs to be replaced, the plugging portion 73 is removed, the filter element 1 is unlocked to pull out the filter element 1, and then after a new filter element 1 is installed, the plugging portion 73 is installed on the housing body 72, thereby completing the replacement of the filter element 1.

[0064] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A filter element installation structure, characterized in that: include: A filter element, wherein a cylindrical connecting portion is provided at the bottom of the filter element; A waterway plate, wherein the waterway plate is provided with a receiving groove which is open upward and concave downward, and the connecting portion is inserted into the receiving groove from top to bottom in the assembled state; A locking plate is arranged on the waterway plate, the locking plate is in a circular ring structure and surrounds the connection portion in the assembled state, and the locking plate can reciprocate around the axis of the filter element relative to the waterway plate to lock or unlock the filter element.

2. The filter element installation structure according to claim 1, characterized in that: At least one limit piece is provided on the radial periphery of the connecting part, and the inner wall of the locking plate is concavely formed with an unlocking channel adapted to the limit piece, facing away from the connecting part, so that the limit piece can slide through the unlocking channel, and the number of the unlocking channels is equal to the number of the limit pieces. The locking plate reciprocates around the axis of the filter element relative to the waterway plate so that the corresponding unlocking channel and the limit piece are relative to or offset up and down, thereby unlocking or locking the connecting part.

3. The filter element installation structure according to claim 2, characterized in that: The filter element mounting structure also includes a filter element seat, the waterway plate is fixed at the bottom of the filter element seat, and the locking plate is located between the filter element seat and the waterway plate. The filter element seat is provided with a guide groove adapted to the connecting part, and the guide groove and the accommodating groove are arranged correspondingly up and down so that the connecting part passes through the locking plate via the guide groove and is plugged into the accommodating groove.

4. The filter element installation structure according to claim 3, characterized in that: The groove wall of the guide groove is concavely formed with a guide channel adapted to the limit member facing away from the connecting portion. The number of the guide channels is equal to the number of the limit members. In the assembled state, the guide channel and the corresponding limit member are arranged opposite to each other up and down.

5. The filter element installation structure according to claim 3, characterized in that: The filter element seat comprises a bottom plate and a side plate, wherein the side plate extends upward from the edge of the bottom plate to form a semi-enclosed structure and is adapted to the filter element, and the guide groove is arranged on the bottom plate.

6. The filter element installation structure according to claim 5, characterized in that: The upper part of the side plate is provided with a slot penetrating upward, and the lower side wall of the filter element is provided with a protrusion adapted to the slot. In the assembled state, the protrusion is locked in the slot.

7. The filter element installation structure according to any one of claims 1 to 6, characterized in that: The outer edge of the locking plate extends away from the connecting portion to the outside of the waterway plate to form a pushing portion; The waterway plate is installed on a mounting seat, and the mounting seat is provided with a pushing member corresponding to the pushing part, which can reciprocate around the axis of the filter element relative to the mounting seat. The pushing member pushes the pushing part to rotate synchronously to unlock the filter element, or the pushing part pushes the pushing member to rotate in the opposite direction to lock the filter element.

8. The filter element installation structure according to claim 7, characterized in that: The pushing portion is provided with a limiting groove corresponding to the pushing member, the limiting groove extends along the rotation direction of the pushing portion, and the pushing member is reciprocatingly rotatably arranged in the limiting groove.

9. The filter element installation structure according to claim 7, characterized in that: The pushing portion and the waterway plate are elastically connected via an elastic member, the elastic member is arranged along the rotation direction of the pushing portion, and the elastic member is in a compressed state in an unlocked state.

10. A water purifier, characterized in that: include: A housing and a filter element mounting structure as described in any one of claims 1 to 9, wherein a mounting cavity is provided in the housing, and the filter element mounting structure is mounted in the mounting cavity.

Images