Filter element fixing assembly and filtering device

Abstract

The utility model provides a filter element fixing component and filter device, the filter element fixing component includes filter cartridge, screw cap, guide seat, elastic structure and a plurality of spring bolt, the guide seat is provided on the filter cartridge, and the guide seat has the guide groove that extends along the radial direction of filter cartridge, the plurality of spring bolt is provided in the guide groove, screw cap and guide seat are movably connected, and the elastic structure is provided with the elastic structure. The elastic structure can drive the multiple lock tongues to extend out along the guide groove and penetrate through the multiple communication openings through elastic force, at least one side, in the circumferential direction, of each lock tongue is provided with a pressing inclined face, and the rotary cover can rotate around the axis of the filter cylinder so that the side walls of the communication openings can press the pressing inclined faces, and the lock tongues can retract into the guide groove. According to the filter element fixing assembly, the spring bolts are provided with the pressing inclined planes, when the filter element fixing assembly needs to be disassembled and the filter element needs to be replaced, the spring bolts on the periphery can be retracted into the filter element fixing assembly only by rotating the rotary cover and pressing the pressing inclined planes of the spring bolts through the side walls of the communication ports, and then the filter element fixing assembly is rapidly disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the field of filter material technology, specifically to a filter element fixing assembly and a filtration device including the filter element fixing assembly. Background Technology

[0002] With increasing demands for water quality and advancements in technology, filter materials are widely used in various fields, including industrial water, medical and laboratory water, outdoor emergency water, agricultural and aquaculture water, and domestic water. Existing filter materials typically employ permeable membranes and absorbent materials (such as activated carbon) to improve water quality, remove impurities, pollutants, and harmful substances from the water, making it safer and cleaner.

[0003] To facilitate timely replacement of filter media, consumables such as permeable membranes and absorbent materials are typically made as replaceable filter cartridges. When the filtration efficiency of these consumables decreases, the filter media can be quickly replaced by simply replacing the cartridge, avoiding interruptions to the water supply. However, existing filter cartridge fixing devices are usually quite complex in structure, resulting in cumbersome filter cartridge replacement operations and low work efficiency.

[0004] Therefore, how to provide a filter element fixing assembly that is simple in structure and easy to operate has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a filter element fixing assembly and a filtration device including the filter element fixing assembly. The filter element fixing assembly has a simple structure and is easy to operate.

[0006] To achieve the above objectives, as one aspect of this utility model, a filter cartridge fixing assembly is provided, including a filter cartridge, a screw cap, a guide seat, an elastic structure, and multiple locking tongues. The guide seat is disposed on the filter cartridge and has a guide groove extending radially along the filter cartridge. The multiple locking tongues are disposed in the guide groove. The screw cap is movably connected to the guide seat and has multiple communication ports. The elastic structure can drive the multiple locking tongues to extend along the guide groove and pass through the multiple communication ports by elastic force. At least one side of each locking tongue in the circumferential direction has a pressing slope. The screw cap can rotate about the axis of the filter cartridge so that the sidewall of the communication port presses against the pressing slope and retracts the locking tongue into the guide groove.

[0007] Optionally, the guide seat includes a base and multiple guide structures. The base is fixedly disposed at one end of the filter cartridge. The multiple guide structures are distributed circumferentially. Each guide structure includes a limiting part and a pair of spaced-apart guide plates extending radially. The limiting part and the guide plates are both fixedly disposed on the base. The guide plates are located outside the limiting part, and the limiting part and the guide plates together form the guide groove. The elastic structure is disposed between the latch and the limiting part, and can drive the latch away from the limiting part by elastic force, so that the latch extends radially.

[0008] Optionally, the limiting part is a plate-like structure, and the ends of the plurality of limiting parts are connected end to end to form a whole.

[0009] Optionally, the elastic structure is a spring, the locking tongue includes a locking plate, a locking block and a spring post connected in sequence, the locking plate can extend out from the communication port, and the pressing inclined surface is formed on the locking plate, the size of the locking block is larger than the size of the communication port, one end of the elastic structure is sleeved on the spring post, and the other end of the elastic structure abuts against the limiting part.

[0010] Optionally, the guide structure further includes a spring positioning block located in the guide groove, the spring positioning block having a spring positioning groove formed thereon, and at least part of the end of the elastic structure being accommodated in the spring positioning groove.

[0011] Optionally, the guide seat includes a base and a pair of spaced-apart guide plates. The base is fixedly disposed at one end of the filter cartridge. The guide plates extend radially and form a guide groove between them. Both ends of the guide groove are provided with locking tongues. The elastic structure is disposed between the locking tongues and can drive the locking tongues away from each other through elastic force, so that the locking tongues on both sides extend radially.

[0012] Optionally, the elastic structure is a spring, the latch has at least one spring post, and the end of the elastic structure is sleeved on the spring post.

[0013] Optionally, the base has at least one first guide groove, the elastic structure is at least partially accommodated in the first guide groove, and is capable of telescoping along the first guide groove.

[0014] Optionally, the guide seat further includes a mating cylinder, which is fixedly connected to the base and arranged around the plurality of guide plates. The mating cylinder has a plurality of clearance openings corresponding to the positions of the guide grooves.

[0015] The cap includes a surrounding cylinder and a cover that closes one end of the surrounding cylinder. A plurality of the communication ports are formed on the surrounding cylinder. The surrounding cylinder is sleeved on the mating cylinder, and the cover covers the side of the guide seat away from the filter cylinder.

[0016] Optionally, the cap further includes a rotating bar that extends radially and is fixedly disposed on the side of the cap body opposite to the guide seat.

[0017] Optionally, at least one of the base and the latch has at least one first guide groove, and the other has at least one first protrusion. The first guide groove extends radially, and the first protrusion is received in the first guide groove and is movable along the first guide groove as the latch extends and retracts.

[0018] Optionally, the filter element fixing assembly further includes a limiting member located on the side of the plurality of guide plates opposite to the base and fixedly connected to the base. At least one of the limiting member and the locking tongue has at least one second guide groove formed on it, and at least one second protrusion is formed on the other. The second guide groove extends radially, and the second protrusion is accommodated in the second guide groove and is movable along the second guide groove as the locking tongue extends and retracts.

[0019] Optionally, the limiting member has at least one second guide groove on the surface facing the base, the elastic structure portion is accommodated in the second guide groove, and is capable of telescopic movement within the space jointly defined by the first guide groove and the second guide groove.

[0020] Optionally, the pressing slope is a plane, and the pressing slope has an angle with the radial direction.

[0021] Optionally, the pressing slope is an arc-shaped surface, and the angle between each point on the pressing slope and the radial direction gradually increases along the extension direction of the latch.

[0022] Optionally, the guide seat includes a plurality of guide portions, the guide portions being fixedly disposed at the bottom of the guide groove, the locking tongue having a guide hole extending through the axial direction of the filter cartridge, and the cross-section of the guide hole extending radially, the guide portion being accommodated in the guide hole.

[0023] Optionally, one of the cap and the guide seat has a shaft hole, and the other has a rotating cam. The rotating cam is coaxially arranged with the filter cartridge, is accommodated in the shaft hole, and can rotate in the shaft hole.

[0024] Optionally, the rotating cam is formed on the guide seat, and the filter element fixing assembly further includes a positioning fastener that passes through the shaft hole and is fixedly connected to the rotating cam to fix the axial position of the cap.

[0025] Optionally, the guide seat is integral with the filter cartridge.

[0026] Optionally, the filter cartridge includes a receiving cylinder and a cover. One end of the receiving cylinder is fixedly connected to the guide seat, and the other end of the receiving cylinder has an installation opening. The cover detachably seals the installation opening and has multiple fluid interfaces that can communicate with the filter element in the receiving cylinder.

[0027] As a second aspect of this utility model, a filtration device is provided, including a mounting base, a water filtration pipeline, and a filter element fixing assembly provided in the embodiments of this utility model. The mounting base has a filter element groove, the water filtration pipeline is fixedly connected to the mounting base, the filter element fixing assembly is disposed in the filter element groove, and the water filtration pipeline is connected to the filter element in the filter cartridge of the filter element fixing assembly. The side wall of the filter element groove has multiple locking grooves, and multiple locking tongues of the filter element fixing assembly are accommodated in the multiple locking grooves.

[0028] Optionally, the filter cartridge includes a receiving cylinder and a cover. One end of the receiving cylinder is fixedly connected to the guide seat, and the other end of the receiving cylinder has an installation opening. The cover detachably seals the installation opening and has multiple fluid interfaces. The water filtration pipeline is connected to the filter element in the receiving cylinder through the multiple fluid interfaces.

[0029] In the filter cartridge fixing assembly and filtration device provided by this utility model, the filter cartridge is used to accommodate the filter cartridge, and multiple locking tongues can extend outwards under the elastic force of the elastic structure, thereby cooperating with the corresponding grooves of the water purification device to fix the position of the filter cartridge fixing assembly and the filter cartridge installed inside it, and to ensure the stability of the connection between the filter cartridge and the corresponding water pipe.

[0030] Furthermore, the locking tongue has a pressing bevel along its circumferential side. Therefore, when it is necessary to disassemble the filter element fixing assembly and replace the filter element, simply rotate the cap to bring the side wall of the connecting port into contact with the pressing bevel of the locking tongue, pressing the locking tongue into the guide groove. This allows the protruding locking tongues to retract into the filter element fixing assembly, enabling quick disassembly and assembly of the filter element fixing assembly and improving the convenience of filter element replacement. At the same time, the filter element fixing assembly provided by this invention has a simple structure, effectively reducing the difficulty of maintenance and ensuring the stability of the filtration device in use. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings:

[0032] Figure 1 This is a schematic diagram of the filter element fixing assembly provided in an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 A cross-sectional view of the middle filter element fixing assembly;

[0034] Figure 3 yes Figure 1 A structural disassembly diagram of the middle filter element fixing assembly;

[0035] Figure 4 yes Figure 1 A schematic diagram of the locking tongue of the middle filter element fixing assembly in the retracted state;

[0036] Figure 5 This is a schematic diagram of the filter element fixing assembly provided in an embodiment of the present invention;

[0037] Figure 6 yes Figure 5 A cross-sectional view of the middle filter element fixing assembly;

[0038] Figure 7 yes Figure 5 A structural disassembly diagram of the middle filter element fixing assembly;

[0039] Figure 8 This is a schematic diagram of the locking tongue in one embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the locking tongue in another embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] Filter cartridge 100; screw cap 200; connecting port 201; surrounding cylinder 210; cover body 220; rotating bar 230; guide seat 300; base 310; guide structure 320; limiting part 321; guide plate 322; spring positioning block 323; mating cylinder 330; clearance port 331; guide part 340; locking tongue 400; guide hole 401; locking piece 410; locking block 420; spring column 430; elastic structure 500; limiting member 600; guide groove a; pressing inclined surface b; first guide groove c; first guide groove d1; first protrusion d2; second protrusion d3; shaft hole e1; rotating convex shaft e2. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0044] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0045] To address the aforementioned technical problems, as one aspect of this utility model, a filter element fixing assembly is provided, such as... Figures 1 to 7 As shown, the filter cartridge fixing assembly includes a filter cartridge 100, a screw cap 200, a guide seat 300, an elastic structure 500, and multiple locking tongues 400. The guide seat 300 is disposed on the filter cartridge 100 and has a guide groove a extending radially along the filter cartridge 100. The multiple locking tongues 400 are disposed in the guide groove a. The screw cap 200 is movably connected to the guide seat 300 and has multiple connecting ports 201. The elastic structure 500 can drive the multiple locking tongues 400 to extend along the guide groove a and pass through the multiple connecting ports 201 by elastic force. The locking tongues 400 have a pressing slope b on at least one side in the circumferential direction. The screw cap 200 can rotate about the axis of the filter cartridge 100 so that the side wall of the connecting port 201 presses the pressing slope b and retracts the locking tongues 400 into the guide groove a.

[0046] In the filter cartridge fixing assembly provided by this utility model, the filter cylinder 100 is used to accommodate the filter cartridge, and multiple locking tongues 400 can extend outwards under the elastic force of the elastic structure 500, thereby cooperating with the corresponding grooves of the water purification device to fix the position of the filter cartridge fixing assembly and the filter cartridge installed inside it, and ensure the stability of the connection between the filter cartridge and the corresponding water pipe.

[0047] Furthermore, the latch 400 has a pressing bevel b along its circumferential side. Therefore, when it is necessary to disassemble the filter element fixing assembly and replace the filter element, simply rotate the cap 200 so that the side wall of the connecting port 201 contacts the pressing bevel b of the latch 400, pressing the latch 400 into the guide groove a. This allows the latch 400, which extends outwards from all sides, to retract into the filter element fixing assembly (e.g., ...). Figure 4 As shown in the figure, this allows for quick assembly and disassembly of the filter element fixing assembly, improving the convenience of filter element replacement. Furthermore, the filter element fixing assembly provided by this invention has a simple structure, effectively reducing the difficulty of maintenance and ensuring the stability of the filtration device during operation.

[0048] Optionally, such as Figures 1 to 8As shown, the latch 400 has a pressing bevel b on only one side in the circumferential direction. The cap 200 needs to be rotated in the corresponding direction to press the latch 400 into the filter element fixing assembly.

[0049] Or, such as Figure 9 As shown, the latch 400 can also have pressing bevels b on both sides along the circumference, so that the latch 400 can be pressed into the guide groove a regardless of whether the cap 200 is rotated clockwise or counterclockwise.

[0050] As an optional embodiment of this utility model, such as Figure 7 As shown, the guide seat 300 includes a base 310 and multiple guide structures 320. The base 310 is fixedly disposed at one end of the filter cartridge 100. The multiple guide structures 320 are distributed circumferentially. Each guide structure 320 includes a limiting part 321 and a pair of guide plates 322 that are spaced apart and extend radially. The limiting part 321 and the guide plates 322 are both fixedly disposed on the base 310. The guide plates 322 are located outside the limiting part 321, and the limiting part 321 and the guide plates 322 together form a guide groove a. An elastic structure 500 is disposed between the locking tongue 400 and the limiting part 321, and can drive the locking tongue 400 away from the limiting part 321 by elastic force, so that the locking tongue 400 extends radially.

[0051] In this embodiment of the utility model, the guide seat 300 includes a plurality of guide structures 320 distributed circumferentially, and a plurality of locking tongues 400 are respectively disposed in the guide grooves a of the plurality of guide structures 320, and can be ejected independently in each direction, thereby realizing the fixing of the filter element fixing assembly and the filter element inside it in the filtration device.

[0052] As an optional embodiment of this utility model, such as Figure 7 As shown, the limiting part 321 has a plate-like structure, and the ends of multiple limiting parts 321 are connected end to end to ensure the overall structural strength of the guide seat 300.

[0053] It is understandable that the number of guide structures 320 is not limited to Figure 6 , Figure 7 The three cases shown can also be two, four, five, six, etc.

[0054] As an optional embodiment of this utility model, such as Figure 7 As shown, the elastic structure 500 is a spring, and the locking tongue 400 includes a locking plate 410, a locking block 420 and a spring post 430 connected in sequence. The locking plate 410 can extend out of the communication port 201, and the pressing slope b is formed on the locking plate 410. The size of the locking block 420 is larger than the size of the communication port 201. One end of the elastic structure 500 is sleeved on the spring post 430, and the other end of the elastic structure 500 abuts against the limiting part 321.

[0055] In this embodiment of the utility model, the locking tongue 400 includes a locking plate 410, a locking block 420, and a spring post 430. The locking plate 410 is used to extend from the communication port 201 to fix the filter element fixing assembly in the filter device. The locking block 420 can limit the maximum extension length of the locking plate 410. The spring post 430 can cooperate with the spring to maintain the stability of the spring position.

[0056] As an optional embodiment of this utility model, such as Figure 7 As shown, the guide structure 320 also includes a spring positioning block 323 located in the guide groove a. A spring positioning groove is formed on the spring positioning block 323. At least part of the end of the elastic structure 500 is accommodated in the spring positioning groove, thereby further ensuring the stability of the spring position.

[0057] As an optional embodiment of this utility model, such as Figure 3 As shown, the guide seat 300 includes a base 310 and a pair of spaced guide plates 322. The base 310 is fixedly disposed at one end of the filter cartridge 100. The guide plates 322 extend radially and form a guide groove a between the guide plates 322. Both ends of the guide groove a are provided with locking tongues 400. An elastic structure 500 is disposed between the locking tongues 400 and can drive the locking tongues 400 away from each other through elastic force so that the locking tongues 400 on both sides extend radially.

[0058] As an optional embodiment of this utility model, such as Figure 3 As shown, the elastic structure 500 is a spring, and the locking tongue 400 has at least one spring post 430. The end of the elastic structure 500 is sleeved on the spring post 430 to ensure the stability of the spring position.

[0059] As an optional embodiment of this utility model, such as Figure 3 As shown, the base 310 has at least one first guide groove c, and the elastic structure 500 is at least partially accommodated in the first guide groove c and can extend and retract along the first guide groove c, thereby further ensuring the stability of the spring position.

[0060] As an optional embodiment of this utility model, such as Figure 3 , Figure 7 As shown, the guide seat 300 also includes a mating cylinder 330, which is fixedly connected to the base 310 and is arranged around multiple guide plates 322. Multiple clearance openings 331 corresponding to the position of the guide groove a are formed in the mating cylinder 330.

[0061] The screw cap 200 includes a surrounding cylinder 210 and a cover body 220 that closes one end of the surrounding cylinder 210. Multiple connecting ports 201 are formed on the surrounding cylinder 210. The surrounding cylinder 210 is sleeved on the mating cylinder 330, and the cover body 220 covers the side of the guide seat 300 away from the filter cartridge 100.

[0062] As an optional embodiment of this utility model, such as Figure 3 , Figure 7 As shown, the screw cap 200 also includes a rotating bar 230, which extends radially and is fixedly disposed on the side of the cap body 220 away from the guide seat 300. The rotating bar 230 can be pinched by the operator to control the rotation of the screw cap 200.

[0063] In other embodiments of this utility model, the filter element fixing assembly may also include other handle structures for manual operation, the handle structure being fixedly connected to the screw cap 200, further ensuring the ease of disassembly and assembly of the filter element fixing assembly.

[0064] As an optional embodiment of this utility model, such as Figure 3 As shown, at least one of the base 310 and the latch 400 has at least one first guide groove d1 formed on it (shown in the figure as formed on the base 310), and the other has at least one first protrusion d2 formed on it (shown in the figure as formed on the latch 400). The first guide groove d1 extends radially, and the first protrusion d2 is accommodated in the first guide groove d1 and can move along the first guide groove d1 as the latch 400 extends and retracts. In this embodiment of the invention, the first guide groove d1 and the first protrusion d2 can cooperate with each other to ensure the stability of the movement direction of the latch 400.

[0065] As an optional embodiment of this utility model, such as Figure 3 As shown, the filter element fixing assembly also includes a limiting member 600. The limiting member 600 is located on the side of the plurality of guide plates 322 away from the base 310 and is fixedly connected to the base 310. At least one of the limiting member 600 and the locking tongue 400 has at least one second guide groove formed on it, and the other has at least one second protrusion d3 formed on it. The second guide groove extends radially, and the second protrusion d3 is accommodated in the second guide groove and can move along the second guide groove as the locking tongue 400 extends and retracts, further ensuring the stability of the movement direction of the locking tongue 400.

[0066] As an optional embodiment of this utility model, the limiting member 600 has at least one second guide groove (not shown in the figure) on the surface of the side facing the base 310, and the elastic structure 500 is partially accommodated in the second guide groove and can extend and retract within the space jointly defined by the first guide groove c and the second guide groove.

[0067] As an optional embodiment of this utility model, such as Figure 3 , Figure 8 , Figure 9 As shown, the pressing slope b is a plane, and the pressing slope b has an angle with the radial direction.

[0068] Alternatively, as another optional embodiment of this utility model, such as Figure 7 As shown, the pressing slope b is an arc-shaped surface, and the angle between the pressing slope b and the radial direction gradually increases along the extension direction of the locking tongue 400.

[0069] As an optional embodiment of this utility model, such as Figure 3 As shown, the guide seat 300 includes multiple guide portions 340, which are fixedly disposed at the bottom of the guide groove a. A guide hole 401 is formed in the latch 400, extending along the axial direction of the filter cartridge 100, and the cross-section of the guide hole 401 extends radially. The guide portions 340 are accommodated within the guide hole 401. In this embodiment of the invention, the guide portions 340 and the guide holes 401 can cooperate with each other, further ensuring the stability of the movement direction of the latch 400.

[0070] As an optional embodiment of this utility model, such as Figure 3 As shown, the guide part 340 is a column, which makes the guide part 340 in linear contact with the guide hole 401, reducing the friction between the two and thus ensuring the smooth movement of the latch 400.

[0071] As an optional embodiment of this utility model, such as Figure 3 As shown, one of the cap 200 and the guide seat 300 has a shaft hole e1, and the other has a rotating cam e2. The rotating cam e2 is coaxially arranged with the filter cartridge 100, and the rotating cam e2 is accommodated in the shaft hole e1 and can rotate in the shaft hole e1.

[0072] As an optional embodiment of this utility model, the rotating cam e2 is formed on the guide seat 300, and the filter element fixing assembly also includes a positioning fastener (not shown in the figure). The positioning fastener passes through the shaft hole e1 and is fixedly connected to the rotating cam e2 to fix the axial position of the cap 200.

[0073] As an optional embodiment of this utility model, such as Figure 3 , Figure 7 As shown, the guide seat 300 and the filter cartridge 100 are integrated.

[0074] As an optional embodiment of this utility model, the filter cartridge 100 includes a receiving cylinder and a cover (not shown in the figure). One end of the receiving cylinder is fixedly connected to the guide seat 300, and the other end of the receiving cylinder has an installation opening. The cover can be detachably sealed to the installation opening. The cover has multiple fluid interfaces that can communicate with the filter element in the receiving cylinder.

[0075] As a second aspect of this utility model, a filtration device is provided, including a mounting base, a water filtration pipeline, and a filter element fixing assembly provided in the embodiments of this utility model. The mounting base has a filter element groove, the water filtration pipeline is fixedly connected to the mounting base, the filter element fixing assembly is disposed in the filter element groove, and the water filtration pipeline is connected to the filter element in the filter cartridge 100 of the filter element fixing assembly. The side wall of the filter element groove has multiple locking grooves, and multiple locking tongues 400 of the filter element fixing assembly are accommodated in the multiple locking grooves.

[0076] In the filtration device provided by this utility model, the multiple locking tongues 400 of the filter element fixing assembly can extend outwards under the elastic force of the elastic structure 500, thereby cooperating with the corresponding grooves of the water purification device to fix the position of the filter element fixing assembly and the filter element installed inside it, and ensure the stability of the connection between the filter element and the corresponding water pipe.

[0077] Furthermore, the locking tongue 400 has a pressing bevel b on its circumferential side. Therefore, when it is necessary to disassemble the filter element fixing assembly and replace the filter element, simply rotate the cap 200 so that the side wall of the connecting port 201 contacts the pressing bevel b of the locking tongue 400, pressing the locking tongue 400 into the guide groove a. This causes the protruding locking tongue 400 to retract into the filter element fixing assembly, thus achieving quick disassembly and assembly of the filter element fixing assembly and improving the convenience of filter element replacement. At the same time, the filter element fixing assembly has a simple structure, effectively reducing the maintenance difficulty of the filtration device and ensuring the stability of the filtration device's operating condition.

[0078] As an optional embodiment of this utility model, the filter cartridge 100 includes a receiving cylinder and a cover. One end of the receiving cylinder is fixedly connected to the guide seat 300, and the other end of the receiving cylinder has an installation opening. The cover can be detachably sealed to the installation opening. The cover has multiple fluid interfaces, and the water filtration pipeline is connected to the filter element in the receiving cylinder through the multiple fluid interfaces.

[0079] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A filter cartridge fixing assembly, characterized in that, The device includes a filter cartridge (100), a screw cap (200), a guide seat (300), an elastic structure (500), and multiple locking tongues (400). The guide seat (300) is disposed on the filter cartridge (100) and has a guide groove (a) extending radially along the filter cartridge (100). The multiple locking tongues (400) are disposed in the guide groove (a). The screw cap (200) is movably connected to the guide seat (300), and the screw cap (200) has multiple connecting... The through-hole (201) and the elastic structure (500) are capable of driving multiple latches (400) to extend along the guide groove (a) and pass through multiple communication ports (201) by elastic force. Each latch (400) has a pressing slope (b) on at least one side in the circumferential direction. The screw cap (200) is capable of rotating about the axis of the filter cylinder (100) so that the sidewall of the communication port (201) presses the pressing slope (b) and retracts the latches (400) into the guide groove (a).

2. The filter element fixing assembly according to claim 1, characterized in that, The guide seat (300) includes a base (310) and a plurality of guide structures (320). The base (310) is fixedly disposed at one end of the filter cartridge (100). The plurality of guide structures (320) are distributed circumferentially. Each guide structure (320) includes a limiting part (321) and a pair of guide plates (322) that are spaced apart and extend radially. The limiting part (321) and the guide plate (322) are both fixedly disposed on the base (310). The guide plate (322) is located outside the limiting part (321), and the limiting part (321) and the guide plate (322) together form the guide groove (a). The elastic structure (500) is disposed between the locking tongue (400) and the limiting part (321), and can drive the locking tongue (400) away from the limiting part (321) by elastic force so that the locking tongue (400) extends radially.

3. The filter element fixing assembly according to claim 1, characterized in that, The guide seat (300) includes a base (310) and a pair of spaced guide plates (322). The base (310) is fixedly disposed at one end of the filter cartridge (100). The guide plates (322) extend radially and form a guide groove (a) between the guide plates (322). Both ends of the guide groove (a) are provided with locking tongues (400). The elastic structure (500) is disposed between the locking tongues (400) and can drive the locking tongues (400) away from each other by elastic force so that the locking tongues (400) on both sides extend radially.

4. The filter element fixing assembly according to claim 2 or 3, characterized in that, The guide seat (300) also includes a mating cylinder (330), which is fixedly connected to the base (310) and is arranged around the plurality of guide plates (322). The mating cylinder (330) has a plurality of clearance openings (331) corresponding to the position of the guide groove (a). The screw cap (200) includes a surrounding cylinder (210) and a cover (220) that closes one end of the surrounding cylinder (210). A plurality of the connecting ports (201) are formed on the surrounding cylinder (210). The surrounding cylinder (210) is sleeved on the mating cylinder (330), and the cover (220) covers the side of the guide seat (300) away from the filter cartridge (100).

5. The filter element fixing assembly according to claim 2 or 3, characterized in that, At least one of the base (310) and the latch (400) has at least one first guide groove (d1) formed on it, and at least one first protrusion (d2) is formed on the other. The first guide groove (d1) extends radially, and the first protrusion (d2) is received in the first guide groove (d1) and is movable along the first guide groove (d1) as the latch (400) extends and retracts.

6. The filter element fixing assembly according to claim 5, characterized in that, The filter element fixing assembly further includes a limiting member (600) located on the side of the plurality of guide plates (322) opposite to the base (310) and fixedly connected to the base (310). At least one of the limiting member (600) and the latch (400) has at least one second guide groove formed on it, and at least one second protrusion (d3) is formed on the other. The second guide groove extends radially, and the second protrusion (d3) is received in the second guide groove and is movable along the second guide groove as the latch (400) extends and retracts.

7. The filter element fixing assembly according to any one of claims 1 to 3, characterized in that, The pressing slope (b) is a plane, and the pressing slope (b) has an angle with the radial direction.

8. The filter element fixing assembly according to any one of claims 1 to 3, characterized in that, The pressing slope (b) is an arc-shaped surface, and the angle between the pressing slope (b) and the radial direction gradually increases along the extension direction of the latch (400).

9. The filter element fixing assembly according to any one of claims 1 to 3, characterized in that, The guide seat (300) includes a plurality of guide portions (340), the guide portions (340) are fixedly disposed at the bottom of the guide groove (a), the locking tongue (400) has a guide hole (401) that extends through the axial direction of the filter cartridge (100), and the cross-section of the guide hole (401) extends radially, and the guide portion (340) is accommodated in the guide hole (401).

10. A filtration device, characterized in that, The device includes a mounting base, a water filtration pipeline, and a filter element fixing assembly as described in any one of claims 1 to 9. The mounting base has a filter element groove, the water filtration pipeline is fixedly connected to the mounting base, the filter element fixing assembly is disposed in the filter element groove, and the water filtration pipeline is connected to the filter element in the filter cartridge (100) of the filter element fixing assembly. The side wall of the filter element groove has a plurality of locking grooves, and a plurality of locking tongues (400) of the filter element fixing assembly are accommodated in the plurality of locking grooves.

Images