Filtering device and water purifier

Abstract

The utility model discloses a filtering device and a water purifier, and belongs to the technical field of water purification, the filtering device comprises a machine head, a filtering bottle and an elastic limiting piece, and the filtering bottle is connected with the machine head in an inserted mode in the first direction; the elastic limiting piece is in a ring shape with an opening, and is arranged in an inserting area of the machine head and the filter bottle; one of the machine head and the filter bottle is provided with a limiting groove, the other one is provided with an installation groove, the machine head and the filter bottle are connected in an inserted mode so that at least part of the installation groove and the limiting groove can be communicated to form a limiting cavity, and the elastic limiting piece is inserted into the limiting cavity and elastically expands to abut against the inner wall of the limiting groove so as to prevent the filter bottle from being separated from the machine head in the first direction. The water purifier comprises a water inlet pipeline and the filtering device, wherein the filtering device is arranged on the water inlet pipeline. The opening provides space for elastic deformation of the elastic limiting piece, and the elastic limiting piece can be elastically deformed under the action of external force by extruding the elastic limiting piece in the circumferential direction of the elastic limiting piece. By arranging the elastic limiting piece, the machine head and the filter bottle are convenient to mount and dismount.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a filtering device and a water purifier. Background Art

[0002] Before reverse osmosis filtration of a water purifier, a pre-filter is often required to pre-filter large particulate impurities. Existing pre-filters are generally set as a split structure for convenient replacement and cleaning of the filter element. Specifically, the pre-filter includes a bottle body and a valve head, and a cavity for accommodating the filter element is formed between the bottle body and the valve head. Usually, the bottle body and the valve head are threadedly connected, and this threaded connection method has problems such as laborious installation and difficult disassembly. Content of the Utility Model

[0003] The purpose of the utility model is to provide a filtering device and a water purifier to solve the technical problem that the existing pre-filter is not convenient for disassembly and cleaning.

[0004] As conceived above, the technical solution adopted by the utility model is as follows:

[0005] A filtering device, comprising:

[0006] A machine head;

[0007] A filter bottle inserted into the machine head along a first direction;

[0008] An elastic limiting member, in a ring shape with an opening, and the elastic limiting member is arranged in the insertion area between the machine head and the filter bottle;

[0009] One of the machine head and the filter bottle is provided with a limiting groove, and the other is provided with an installation groove. The machine head and the filter bottle are inserted so that at least part of the installation groove communicates with the limiting groove to form a limiting cavity. The elastic limiting member is inserted into the limiting cavity and elastically expands to abut against the inner wall of the limiting groove to prevent the filter bottle from separating from the machine head along the first direction.

[0010] Preferably, the machine head has an installation port, one end of the filter bottle is inserted into the installation port, the inner wall of the installation port is provided with the limiting groove in a circumferential direction, the outer circumferential surface of the filter bottle is provided with the installation groove in a circumferential direction, and a disassembly port communicating with the limiting groove is formed on the machine head. The opening of the elastic limiting member is located in the disassembly port.

[0011] Preferably, both ends of the opening of the elastic limiting member are provided with disassembly and assembly holes, and the disassembly and assembly holes extend along the radial direction of the elastic limiting member.

[0012] Preferably, the disassembly port penetrates along the first direction to the end of the installation port.

[0013] Preferably, along the first direction, the width of the installation groove is greater than that of the limiting groove, and the elastic limiting member is inserted into the limiting cavity from the installation groove along the first direction.

[0014] Preferably, limiting heads are provided at both ends of the opening of the elastic limiting member, and the limiting heads are located within the disassembly opening.

[0015] Preferably, disassembly and assembly holes are formed in the limiting heads, and the disassembly and assembly holes extend parallel to the axial direction of the elastic limiting member.

[0016] Preferably, the machine head has an installation opening, one end of the filter bottle is inserted into the installation opening, the limiting groove is formed in the machine head and penetrates the installation opening along the second direction, the installation groove is formed in the filter bottle and penetrates the filter bottle along the second direction, and the elastic limiting member is inserted into the limiting cavity formed by the communication of the limiting groove and the installation groove along the second direction, and the second direction is perpendicular to the first direction.

[0017] Preferably, the machine head has a water inlet and a water outlet, a reversing valve is arranged inside the machine head, and an operating member connected to the reversing valve is arranged on the machine head. By rotating the operating member, the direction of the reversing valve can be switched.

[0018] A water purifier includes a water inlet pipeline and the filtering device as described above, and the filtering device is arranged on the water inlet pipeline.

[0019] Advantages of the present utility model:

[0020] For the filtering device proposed by the present utility model, the elastic limiting member is in a ring shape with an opening. The opening provides space for the elastic deformation of the elastic limiting member. Squeezing the elastic limiting member along the circumferential direction of the elastic limiting member can cause the elastic limiting member to elastically deform under an external force; one of the machine head and the filter bottle is provided with a limiting groove, and the other is provided with an installation groove. When connecting the machine head and the filter bottle, the machine head and the filter bottle are inserted so that at least part of the installation groove communicates with the limiting groove to form a limiting cavity, and the elastic limiting member is inserted into the limiting cavity. The elastic limiting member elastically expands under its own elastic action and abuts against the inner wall of the limiting groove to prevent the filter bottle from separating from the machine head along the first direction, playing a limiting role. When disassembling the machine head and the filter bottle, squeeze the elastic limiting member to make the elastic limiting member elastically contract to facilitate the disassembly of the elastic limiting member from the limiting cavity, that is, to realize the separation of the machine head and the filter bottle; by setting the elastic limiting member, the installation and disassembly of the machine head and the filter bottle are convenient. Description of the drawings

[0021] Figure 1 is a schematic structure of the filtering device provided in Embodiment 1 of the present utility model Figure 1 ;

[0022] Figure 2 It is a schematic structural diagram of the filtering device provided in the first embodiment of the present utility model Figure 2 ;

[0023] Figure 3 It is Figure 2 an enlarged view of part A of;

[0024] Figure 4 It is a schematic structural diagram of the elastic limiting member provided in the first embodiment of the present utility model;

[0025] Figure 5 It is a sectional view of the filtering device provided in the first embodiment of the present utility model Figure 1 ;

[0026] Figure 6 It is Figure 5 an enlarged view of part B of;

[0027] Figure 7 It is a schematic diagram of a partial structure of the machine head provided in the first embodiment of the present utility model;

[0028] Figure 8 It is a sectional view of a partial structure of the machine head provided in the first embodiment of the present utility model;

[0029] Figure 9 It is a schematic diagram of a partial structure of the filter bottle provided in the first embodiment of the present utility model;

[0030] Figure 10 It is a schematic structural diagram of the filtering device provided in the first embodiment of the present utility model Figure 3 ;

[0031] Figure 11 It is a sectional view of the filtering device provided in the first embodiment of the present utility model Figure 2 ;

[0032] Figure 12 It is a side view of the filtering device provided in the second embodiment of the present utility model;

[0033] Figure 13 It is Figure 12 an enlarged view of part C of;

[0034] Figure 14 It is a schematic structural diagram of the elastic limiting member provided in the second embodiment of the present utility model;

[0035] Figure 15 It is a front view of the filtering device provided in the third embodiment of the present utility model;

[0036] Figure 16 It is a top view of the filtering device provided in the third embodiment of the present utility model;

[0037] Figure 17It is a schematic structural diagram of the elastic limiting member provided in the third embodiment of the present utility model.

[0038] In the figure:

[0039] 101. First direction; 102. Second direction;

[0040] 10. Machine head; 11. Limiting groove; 12. Installation opening; 13. Dismantling opening; 14. Water inlet; 15. Water outlet; 16. Reversing valve; 17. Operating member;

[0041] 20. Filter bottle; 21. Installation groove; 22. Groove; 23. Filter element; 24. Sealing ring;

[0042] 30. Elastic limiting member; 31. Opening; 32. Limiting head; 33. Disassembly and assembly hole;

[0043] 40. Sewage discharge structure. Detailed implementation manners

[0044] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0045] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0046] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "above the upper side", and "on the upper surface" of the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "below the lower side", and "on the lower surface" of the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the horizontal height of the first feature is lower than that of the second feature.

[0047] The technical solutions of the present utility model will be further described below with reference to the drawings and through specific implementation manners.

[0048] Embodiment 1

[0049] Refer to Figures 1 to 11 In an embodiment of the present utility model, a filtering device is provided for filtering water, especially for pre-filtering the water inlet of a water purifier. The filtering device includes a machine head 10, a filter bottle 20, and an elastic limiting member 30. The filter bottle 20 is inserted into the machine head 10 along a first direction 101. The elastic limiting member 30 is in a ring shape with an opening 31, and the elastic limiting member 30 is disposed in the insertion area between the machine head 10 and the filter bottle 20. One of the machine head 10 and the filter bottle 20 is provided with a limiting groove 11, and the other is provided with a mounting groove 21. The machine head 10 and the filter bottle 20 are inserted together so that at least part of the mounting groove 21 communicates with the limiting groove 11 to form a limiting cavity. The elastic limiting member 30 is inserted into the limiting cavity and elastically expands to abut against the inner wall of the limiting groove 11 to prevent the filter bottle 20 from separating from the machine head 10 along the first direction 101.

[0050] The elastic limiting member 30 is in a ring shape with an opening 31. The opening 31 provides space for the elastic deformation of the elastic limiting member 30. Squeezing the elastic limiting member 30 along the circumferential direction of the elastic limiting member 30 can cause the elastic limiting member 30 to elastically deform under an external force. One of the machine head 10 and the filter bottle 20 is provided with a limiting groove 11, and the other is provided with a mounting groove 21. When connecting the machine head 10 and the filter bottle 20, the machine head 10 and the filter bottle 20 are inserted together so that at least part of the mounting groove 21 communicates with the limiting groove 11 to form a limiting cavity. The elastic limiting member 30 is inserted into the limiting cavity, and the elastic limiting member 30 elastically expands under its own elastic action to abut against the inner wall of the limiting groove 11 to prevent the filter bottle 20 from separating from the machine head 10 along the first direction 101, playing a limiting role. When disassembling the machine head 10 and the filter bottle 20, the elastic limiting member 30 is squeezed to make the elastic limiting member 30 elastically contract to facilitate the disassembly of the elastic limiting member 30 from the limiting cavity, and then the machine head 10 and the filter bottle 20 can be pulled apart along the first direction 101 to separate them. By providing the elastic limiting member 30, the installation and disassembly of the machine head 10 and the filter bottle 20 are convenient.

[0051] In this embodiment, the machine head 10 has a mounting opening 12, and one end of the filter bottle 20 is inserted into the mounting opening 12. It can be understood that the mounting opening 12 extends along the first direction 101. Among them, the first direction 101 can be the length direction of the filter bottle 20. Usually, the filter bottle 20 is disposed below the machine head 10, so the first direction 101 is the vertical direction.

[0052] Specifically, a limiting groove 11 is provided in a circumferential direction on the inner wall of the installation opening 12, an installation groove 21 is provided in a circumferential direction on the outer peripheral surface of the filter bottle 20, a disassembly opening 13 communicating with the limiting groove 11 is formed in the machine head 10, and the opening 31 of the elastic limiting member 30 is located in the disassembly opening 13. By providing the disassembly opening 13, it is convenient to perform an extrusion operation on the elastic limiting member 30, usually by extruding both ends of the opening 31 of the elastic limiting member 30, so that the elastic limiting member 30 contracts circumferentially.

[0053] In other embodiments, the filter bottle 20 has an installation opening 12, and one end of the machine head 10 is inserted into the installation opening 12. A limiting groove 11 is provided in a circumferential direction on the inner wall of the installation opening 12, an installation groove 21 is provided in a circumferential direction on the outer peripheral surface of the machine head 10, a disassembly opening 13 communicating with the limiting groove 11 is formed in the filter bottle 20, and the opening 31 of the elastic limiting member 30 is located in the disassembly opening 13.

[0054] In this embodiment, referring to Figure 7 and Figure 8 , the disassembly opening 13 penetrates to the end of the installation opening 12 along the first direction 101, that is, the disassembly opening 13 is a U-shaped opening. When connecting the machine head 10 and the filter bottle 20, the elastic limiting member 30 can be sleeved in the installation groove 21 on the outer periphery of the filter bottle 20, and the elastic limiting member 30 is extruded so that the elastic limiting member 30 abuts against the installation groove 21. The opening 31 of the elastic limiting member 30 is aligned with the position of the disassembly opening 13 on the machine head 10. The filter bottle 20 and the elastic limiting member 30 are simultaneously inserted into the installation opening 12 of the machine head 10, so that the installation groove 21 is aligned with the limiting groove 11. The elastic limiting member 30 elastically expands under its own elastic force and abuts against the inner wall of the limiting groove 11 to prevent the filter bottle 20 from separating from the machine head 10 along the first direction 101, playing a limiting role. When disassembling, by extruding both ends of the opening 31 of the elastic limiting member 30 at the disassembly opening 13, the elastic limiting member 30 is abutted against the installation groove 21, and the filter bottle 20 and the elastic limiting member 30 can be simultaneously pulled out from the installation opening 12 of the machine head 10.

[0055] In some embodiments, along the first direction 101, the width of the installation groove 21 is equal to the width of the limiting groove 11. During installation, the filter bottle 20 and the elastic limiting member 30 are inserted simultaneously; during disassembly, the filter bottle 20 and the elastic limiting member 30 are pulled out simultaneously. By providing that the disassembly opening 13 penetrates to the end of the installation opening 12 along the first direction 101, during the installation and disassembly processes, the operator can continuously extrude the elastic limiting member 30 through the space provided by the disassembly opening 13, making the operation more convenient. In order to facilitate the extrusion operation on the elastic limiting member 30, disassembly and assembly holes 33 may be provided at both ends of the opening 31 of the elastic limiting member 30. The disassembly and assembly holes 33 extend along the radial or axial direction of the elastic limiting member 30. By using existing tools to act on the disassembly and assembly holes 33, it is convenient to extrude the elastic limiting member 30.

[0056] In some embodiments, along the first direction 101, the width of the installation groove 21 is greater than the width of the limiting groove 11, and the elastic limiting member 30 is inserted into the limiting cavity along the first direction 101 from within the installation groove 21. During installation, it can be that first, the filter bottle 20 is inserted into the machine head 10, so that part of the installation groove 21 communicates with the limiting groove 11 to form a limiting cavity, and then the elastic limiting member 30 is sleeved in the installation groove 21 and the elastic limiting member 30 is squeezed so that the elastic limiting member 30 clings to the inner wall of the installation groove 21, and the elastic limiting member 30 is pushed along the first direction 101 so that the elastic limiting member 30 is inserted into the limiting cavity; or it can be that first, the elastic limiting member 30 is sleeved in the installation groove 21 and the elastic limiting member 30 is squeezed so that the elastic limiting member 30 clings to the inner wall of the installation groove 21, and then the filter bottle 20 and the machine head 10 are inserted into each other along the first direction 101, so that the installation groove 21 communicates with the limiting groove 11 to form a limiting cavity, and the elastic limiting member 30 expands and inserts into the limiting groove 11 under its own elastic action. During disassembly, the elastic limiting member 30 can be first slid into the installation groove 21 along the first direction 101 from within the limiting cavity, the elastic limiting member 30 is disassembled, and then the filter bottle 20 is pulled out from the machine head 10.

[0057] Both ends of the opening 31 of the elastic limiting member 30 are provided with limiting heads 32, and the limiting heads 32 are located within the disassembly opening 13. By providing the limiting heads 32, a limiting effect is exerted on the elastic limiting member 30 to prevent both ends of the opening 31 of the elastic limiting member 30 from entering the limiting cavity. Specifically, the limiting heads 32 can be spherical heads, columnar heads or other shapes, as long as the limiting heads 32 can be prevented from entering the limiting cavity.

[0058] Furthermore, a disassembly and assembly hole 33 is formed in the limiting head 32, and the disassembly and assembly hole 33 can extend parallel to the axial direction of the elastic limiting member 30. As Figure 4 shown, the elastic limiting member 30 can adopt an existing circlip. In other embodiments, the disassembly and assembly hole 33 can also extend along the radial direction of the elastic limiting member 30. During installation and disassembly, an existing tool acts on the disassembly and assembly hole 33 to facilitate squeezing the elastic limiting member 30.

[0059] In other embodiments, the machine head 10 has a mounting opening 12, and one end of the filter bottle 20 is inserted into the mounting opening 12. An installation groove 21 is provided in a circumferential direction on the inner wall of the mounting opening 12, a limiting groove 11 is provided in a circumferential direction on the outer peripheral surface of the filter bottle 20, a disassembly opening 13 communicating with the installation groove 21 is formed in the machine head 10, and the opening 31 of the elastic limiting member 30 is located in the disassembly opening 13. During installation, the elastic limiting member 30 is inserted into the installation groove 21, and with the aid of a tool, the elastic limiting member 30 is expanded so that the elastic limiting member 30 closely adheres to the inner wall of the installation groove 21. The filter bottle 20 is inserted into the machine head 10, so that the installation groove 21 communicates with the limiting groove 11 to form a limiting cavity. The tool is released, and the elastic limiting member 30 retracts into the limiting groove 11 under its own elastic force. At this time, part of the elastic limiting member 30 is located in the limiting groove 11, and part of the elastic limiting member 30 is located in the installation groove 21. Therefore, the filter bottle 20 can be prevented from being separated from the machine head 10 along the first direction 101. During disassembly, with the aid of a tool, the elastic limiting member 30 is expanded so that the elastic limiting member 30 closely adheres to the inner wall of the installation groove 21. At this time, the elastic limiting member 30 is disengaged from the limiting groove 11, and the filter bottle 20 and the machine head 10 are pulled apart along the first direction 101.

[0060] A sealing ring 24 is provided between the filter bottle 20 and the machine head 10 to play a sealing role. The number of the sealing rings 24 can be one or more. Specifically, a groove 22 is provided in a circumferential direction on the outer peripheral surface of the filter bottle 20, and the sealing ring 24 is inserted into the groove 22. When the filter bottle 20 is inserted into the machine head 10, the sealing ring 24 is clamped between the filter bottle 20 and the machine head 10.

[0061] The machine head 10 has a water inlet 14 and a water outlet 15. A reversing valve 16 is arranged in the machine head 10, and an operating member 17 connected to the reversing valve 16 is arranged on the machine head 10. By rotating the operating member 17, the direction of the reversing valve 16 can be switched. Specifically, the machine head 10 includes a first channel connecting the water inlet 14 and the filter bottle 20 and a second channel directly connecting the water inlet 14 and the water outlet 15. When the operating member 17 is in the first position, as Figure 1 and Figure 5 shown, the water inlet 14 is communicated with the filter bottle 20, and the water entering from the water inlet 14 is filtered by the filter element 23 in the filter bottle 20 and flows out from the water outlet 15. Figure 5 The arrow in Figure 10 and Figure 11 shows the water flow direction; when the operating member 17 rotates to the second position, as Figure 11 and

[0062] shown, the water inlet 14 is directly communicated with the water outlet 15, and the water entering from the water inlet 14 directly flows out from the water outlet 15 without passing through the filter element 23 in the filter bottle 20. Figure 11 The arrow in

[0062] shows the water flow direction. When the filter bottle 20 needs to be disassembled, the operating member 17 is rotated to the second position so that the water inlet 14 is directly communicated with the water outlet 15, avoiding water leakage caused by disassembling the filter bottle 20.

[0062] The filtering device further includes a sewage discharge structure 40, and the sewage discharge structure 40 is arranged at one end of the filter bottle 20 away from the machine head 10. Specifically, the sewage discharge structure 40 includes a sewage discharge valve, and the sewage discharge valve can be opened or closed to achieve sewage discharge. In the open state of the sewage discharge valve, the water inlet from the water inlet 14 flows out from the sewage discharge valve and no longer enters the water outlet 15.

[0063] Embodiment 2

[0064] Figures 12 to 14 Embodiment 2 is shown, in which the components that are the same as or corresponding to those in Embodiment 1 adopt the corresponding reference numerals in Embodiment 1. For the sake of simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The difference lies in that the circumferential direction of the disassembly opening 13 is closed, that is to say, the elastic limiting member 30 cannot be inserted into the disassembly opening 13 along the first direction 101, and can only elastically expand circumferentially into the disassembly opening 13 by itself. When connecting the machine head 10 and the filter bottle 20, the elastic limiting member 30 can be sleeved in the installation groove 21 on the outer periphery of the filter bottle 20, and an existing tool can be used to squeeze the elastic limiting member 30 so that the elastic limiting member 30 abuts against the installation groove 21. The opening 31 of the elastic limiting member 30 faces the position of the disassembly opening 13 on the machine head 10. The filter bottle 20 and the elastic limiting member 30 are inserted into the machine head 10 at the same time. When part of the elastic limiting member 30 is inserted into the installation opening 12 of the machine head 10, release the tool, and continue to insert the filter bottle 20 and the elastic limiting member 30 into the installation opening 12 of the machine head 10 until the elastic limiting member 30 is completely inserted into the installation opening 12, so that the installation groove 21 is aligned with the limiting groove 11. The elastic limiting member 30 elastically expands under its own elastic action and abuts against the inner wall of the limiting groove 11 to prevent the filter bottle 20 from detaching from the machine head 10 along the first direction 101, playing a limiting role. When disassembling, at the disassembly opening 13, use a tool to squeeze both ends of the opening 31 of the elastic limiting member 30 so that the elastic limiting member 30 abuts against the installation groove 21, and pull out the filter bottle 20 and the elastic limiting member 30 from the machine head 10 at the same time. When part of the elastic limiting member 30 disengages from the limiting groove 11, release the tool, and continue to pull out the filter bottle 20 and the elastic limiting member 30 from the installation opening 12 of the machine head 10, and the filter bottle 20 and the elastic limiting member 30 can be pulled out from the installation opening 12 of the machine head 10 at the same time.

[0065] In order to facilitate the squeezing operation of the elastic limiting member 30, disassembly and assembly holes 33 are arranged at both ends of the opening 31 of the elastic limiting member 30, and the disassembly and assembly holes 33 extend along the radial direction of the elastic limiting member 30. When installing or disassembling, an existing tool is inserted into the disassembly and assembly holes 33 to facilitate squeezing the elastic limiting member 30 to contract.

[0066] In order to facilitate the insertion of the elastic limiting member 30 into the installation opening 12 or the pulling out from the installation opening 12, guiding inclined surfaces can be arranged on both sides of the elastic limiting member 30.

[0067] Embodiment 3

[0068] Figure 15 and Figure 17 Embodiment 3 is shown, in which the components that are the same as or corresponding to those in Embodiment 1 are provided with the corresponding reference numerals as in Embodiment 1. For simplicity, only the differences between Embodiment 3 and Embodiment 1 are described. The difference lies in that the machine head 10 has a mounting opening 12, one end of the filter bottle 20 is inserted into the mounting opening 12, a limiting groove 11 is formed on the machine head 10 and penetrates through the mounting opening 12 along the second direction 102, a mounting groove 21 is formed on the filter bottle 20 and penetrates through the filter bottle 20 along the second direction 102, and the elastic limiting member 30 is inserted into the limiting cavity formed by the communication of the limiting groove 11 and the mounting groove 21 along the second direction 102. The second direction 102 is perpendicular to the first direction 101. When the first direction 101 is the vertical direction, the second direction 102 is the horizontal direction.

[0069] During installation, first insert the filter bottle 20 into the machine head 10 along the first direction 101 so that the mounting groove 21 communicates with the limiting groove 11 to form a limiting cavity, then squeeze the elastic limiting member 30 to cause elastic deformation, and insert the elastic limiting member 30 into the limiting cavity along the second direction 102. During disassembly, first pull out the elastic limiting member 30 from the limiting cavity along the second direction 102, and then pull out the filter bottle 20 from the machine head 10 along the first direction 101.

[0070] Embodiment 4

[0071] This embodiment provides a water purifier, which includes a water inlet pipeline and the filtering device in any of the above embodiments. The filtering device is arranged on the water inlet pipeline. Since the filter bottle 20 of the filtering device and the machine head 10 are easy to disassemble, it is convenient to clean and replace the filter element 23 in the filter bottle 20, thereby improving the maintenance efficiency.

[0072] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device, characterized in that, Comprising: A machine head (10); A filter bottle (20), which is inserted into the machine head (10) along a first direction (101); An elastic limiting member (30), which is annular with an opening (31), and the elastic limiting member (30) is arranged in the insertion area between the machine head (10) and the filter bottle (20); One of the machine head (10) and the filter bottle (20) is provided with a limiting groove (11), and the other is provided with a mounting groove (21). The machine head (10) and the filter bottle (20) are inserted so that at least part of the mounting groove (21) communicates with the limiting groove (11) to form a limiting cavity. The elastic limiting member (30) is inserted into the limiting cavity and elastically expands to abut against the inner wall of the limiting groove (11) to prevent the filter bottle (20) from separating from the machine head (10) along the first direction (101).

2. The filtering device according to claim 1, characterized in that, The machine head (10) has a mounting opening (12), one end of the filter bottle (20) is inserted into the mounting opening (12), the limiting groove (11) is annularly arranged on the inner wall of the mounting opening (12), the mounting groove (21) is annularly arranged on the outer peripheral surface of the filter bottle (20), a disassembly opening (13) communicating with the limiting groove (11) is formed on the machine head (10), and the opening (31) of the elastic limiting member (30) is located in the disassembly opening (13).

3. The filtering device according to claim 2, characterized in that, Both ends of the opening (31) of the elastic limiting member (30) are provided with disassembly and assembly holes (33), and the disassembly and assembly holes (33) extend along the radial direction of the elastic limiting member (30).

4. The filtering device according to claim 2, wherein The disassembly opening (13) penetrates along the first direction (101) to the end of the mounting opening (12).

5. The filtering device according to claim 4, characterized in that, Along the first direction (101), the width of the mounting groove (21) is greater than the width of the limiting groove (11), and the elastic limiting member (30) is inserted into the limiting cavity from the mounting groove (21) along the first direction (101).

6. The filtering device according to claim 4, characterized in that Both ends of the opening (31) of the elastic limiting member (30) are provided with limiting heads (32), and the limiting heads (32) are located in the disassembly opening (13).

7. The filtering device according to claim 6, characterized in that, The limiting heads (32) are provided with disassembly and assembly holes (33), and the disassembly and assembly holes (33) extend parallel to the axial direction of the elastic limiting member (30).

8. The filtering device according to claim 1, wherein, The machine head (10) has a mounting opening (12), one end of the filter bottle (20) is inserted into the mounting opening (12), the limiting groove (11) is formed on the machine head (10) and penetrates the mounting opening (12) along a second direction (102), the mounting groove (21) is formed on the filter bottle (20) and penetrates the filter bottle (20) along the second direction (102), and the elastic limiting member (30) is inserted into the limiting cavity formed by the communication of the limiting groove (11) and the mounting groove (21) along the second direction (102). The second direction (102) is perpendicular to the first direction (101).

9. The filtering device according to any one of claims 1-8, characterized in that, The machine head (10) has a water inlet (14) and a water outlet (15). A reversing valve (16) is arranged inside the machine head (10), and an operating member (17) connected to the reversing valve (16) is arranged on the machine head (10). By rotating the operating member (17), the direction of the reversing valve (16) can be switched.

10. A water purifier, characterized in that, It includes a water inlet pipeline and the filtering device according to any one of claims 1-9, and the filtering device is arranged on the water inlet pipeline.

Images