Freely combinable filter cartridge

Abstract

The application relates to a freely combinable filter element which comprises a filter element body, an end cover one, an end cover two, a cover and an elastic snap ring, the end cover one and the end cover two are respectively arranged at two ends of the filter element body, a protrusion is arranged on the end cover one, grooves for clamping the protrusion are arranged on the end cover two and the cover, a gap is arranged on the elastic snap ring, a clamping groove one is arranged on the outer peripheral wall of the protrusion, clamping grooves two are arranged on the outer peripheral walls of the end cover two and the cover, when the protrusion is clamped into the groove, the clamping groove one and the clamping groove two are spliced to form a positioning ring groove for clamping the elastic snap ring. A plurality of filter element bodies can be spliced according to requirements, the length of the filter element is flexibly adjusted, diversified requirements are adapted, users do not need to purchase filter elements of different specifications, and the use cost is reduced.

Description

Technical Field

[0001] This application relates to the field of filter elements, and more particularly to a freely combinable filter element. Background Technology

[0002] In fields such as water treatment, air purification, and fluid filtration, filter elements are the core components for achieving impurity separation and media purification.

[0003] For example, utility model patent CN217756967U discloses a composite filter element structure, including: a filter cartridge; a filter element cover assembly installed at the end of the filter cartridge, the filter element cover assembly having at least a raw water inlet, a pure water inlet, and a wastewater inlet; an RO membrane element installed inside the filter cartridge, the raw water side of the RO membrane element being connected to the raw water inlet, the wastewater side of the RO membrane element being connected to the wastewater inlet, the pure water side of the RO membrane element being connected to the pure water inlet through a central pipe, the outer wall of the RO membrane element and the inner wall of the filter cartridge forming a pressure chamber, the pressure chamber being connected to the pure water side of the RO membrane element; and a scale inhibitor component installed between the raw water side of the RO membrane element and the raw water inlet, the scale inhibitor component including a filter frame and a scale inhibitor filled in the filter frame, using the scale inhibitor component to purify the raw water, extending the service life of the RO membrane element, reducing the waste of scale inhibitor, and lowering the operating cost.

[0004] The composite filter element structure described above is fixed during manufacturing. However, in actual applications, different scenarios have different requirements for filtration flow rate and filtration capacity. A fixed-length filter element cannot meet diverse needs. Users need to purchase filter elements of corresponding specifications separately for different scenarios, which increases the cost of use and needs to be improved. Summary of the Invention

[0005] To address the issue of filter elements failing to meet diverse needs, this application provides a freely combinable filter element.

[0006] This application provides a freely combinable filter element, which adopts the following technical solution:

[0007] A freely combinable filter element includes a filter element body, an end cap one, an end cap two, a sealing cap, and an elastic retaining ring. The end cap one and the end cap two are respectively disposed at both ends of the filter element body. The end cap one has a protrusion, and the end cap two and the sealing cap have grooves for the protrusion to be engaged. The elastic retaining ring has a clearance notch. The outer peripheral wall of the protrusion has a retaining groove one, and the outer peripheral wall of the end cap two and the sealing cap has a retaining groove two. When the protrusion is engaged in the groove, the retaining groove one and the retaining groove two are joined together to form a positioning ring groove for the elastic retaining ring to be engaged.

[0008] By adopting the above technical solution, the protrusion is inserted into the groove, then the elastic retaining ring is opened, aligned with the positioning ring groove, and then released. The elastic retaining ring resets and is inserted into the positioning ring groove. By the elastic retaining ring abutting against the inner walls of groove one and groove two, two adjacent filter cartridge bodies can be positioned. The connection and positioning between the cap and the filter cartridge body is similar. Multiple filter cartridge bodies can be spliced ​​as needed. After splicing, one end of the filter cartridge body is covered by the cap, so that the filtered material flows out only from the other end of the filter cartridge. The length of the filter cartridge can be flexibly adjusted to adapt to diverse needs. Users do not need to purchase filter cartridges of different specifications, reducing usage costs.

[0009] Optionally, the filter element body has a through hole, and both end cap one and end cap two are provided with a limiting block, a limiting rod one, and a limiting rod two. The through hole allows the limiting block to be engaged. The limiting rod one and the limiting rod two are located on both sides of the filter element body. On the side of the limiting rod one away from the end cap one, two extension blocks are provided at intervals. On the side of the two extension blocks that are away from each other, there is a locking block. On the side of the locking block away from the limiting rod one, there is a guide surface. The guide surface is inclined towards the limiting rod one and away from the other extension block. The limiting rod two has a locking groove three for the locking block and the extension block to be engaged. The inner wall of the locking groove three has a positioning hole for the locking block to be engaged.

[0010] By adopting the above technical solution, when the filter element body needs to be cleaned, insert your finger into the positioning hole and press the locking blocks on the two extension blocks to deform the two extension blocks and disengage the locking blocks from the positioning hole. Then move end cap one / end cap two away from the filter element body to disengage the extension blocks and locking blocks from the slot three, so that the filter element body can be removed from end cap one and end cap two for separate cleaning, making the cleaning of the filter element body more convenient. After cleaning, insert the positioning blocks on end cap one and end cap two into the through hole, and press the limiting rod two against the guide surface to squeeze the locking blocks, causing the extension blocks to deform and making it easier for the extension blocks and locking blocks to be inserted into the slot three until the locking blocks and positioning holes are aligned. The extension blocks are then reset so that the locking blocks are inserted into the positioning holes. By the locking blocks abutting against the inner wall of the positioning holes, the connection between limiting rod one and limiting rod two can be achieved, thereby positioning end cap one and end cap two and completing the splicing of the filter element.

[0011] Optionally, both end cap one and end cap two include a cover body and a rotating ring rotatably connected to the cover body. The protrusion is provided on the cover body of end cap one, the groove and the slot two are provided on the cover body of end cap two, the limiting block is provided on the cover body, the limiting rod one and the limiting rod two are provided on the rotating ring, and the rotation axis of the rotating ring is parallel to the axis of the filter element body.

[0012] By adopting the above technical solution, when a lot of impurities accumulate on the outside of the filter element body, rotating the rotating ring will drive the first and second limiting rods to move, thereby scraping off most of the impurities attached to the outside of the filter element body. This can extend the filtration efficiency of the filter element body, reduce the frequency of disassembling the filter element body for separate cleaning, and make it more convenient to use.

[0013] Optionally, the cover is provided with a plurality of positioning blocks, which are distributed around the outer periphery of the limiting block, and the filter element body is provided with positioning grooves for the positioning blocks to be inserted into.

[0014] By adopting the above technical solution, positioning blocks and positioning grooves are set. The positioning blocks abut against the inner wall of the positioning grooves to position the filter element body, thereby preventing the filter element body from rotating together when the rotating ring rotates, and improving the impurity scraping effect.

[0015] Optionally, the card block is provided with a contact surface, which is located on the side of the guide surface near the limiting rod and parallel to the extension block.

[0016] By adopting the above technical solution and setting a contact surface, the contact area between the card block and the finger is increased when the card block is squeezed, thus reducing the slippage that occurs when squeezing the card block.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] 1. Multiple filter cartridges can be spliced ​​together as needed to achieve flexible adjustment of filter cartridge length, adapting to diverse needs. Users do not need to purchase filter cartridges of different specifications, reducing usage costs.

[0019] 2. When it is necessary to clean the filter element body, the filter element body can be removed from end cap one and end cap two for separate cleaning, making it more convenient to clean the filter element body;

[0020] 3. When a lot of impurities accumulate on the outside of the filter element body, rotate the rotating ring. The rotating ring will drive the first and second limiting rods to move, thereby scraping off most of the impurities attached to the outside of the filter element body. This can extend the filtration efficiency of the filter element body, reduce the frequency of disassembling the filter element body for individual cleaning, and make it more convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an embodiment of this application.

[0022] Figure 2 This is a partial exploded structural diagram of an embodiment of this application, mainly showing the structure of the clearance notch.

[0023] Figure 3 This is a partial exploded structural diagram of an embodiment of this application, mainly showing the structure of the limiting block and the positioning block.

[0024] Figure 4 This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the positioning ring groove.

[0025] Figure 5 for Figure 3 The enlarged view of section A mainly shows the structure of the extension block, the locking block, the guide surface, and the contact surface.

[0026] Figure 6 for Figure 3 The enlarged view of section B mainly shows the structure of the card slot and the positioning hole.

[0027] Explanation of reference numerals in the attached drawings: 1. Filter element body; 11. Through hole; 12. Positioning groove; 2. End cap one; 3. End cap two; 4. Sealing cap; 5. Elastic retaining ring; 51. Relief notch; 6. Cover body; 7. Rotating ring; 8. Protrusion; 81. Slot one; 9. Groove; 10. Slot two; 13. Positioning ring groove; 14. Limiting block; 15. Positioning block; 16. Limiting rod one; 17. Limiting rod two; 171. Slot three; 172. Positioning hole; 18. Extension block; 19. Locking block; 20. Guide surface; 21. Contact surface. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0029] This application discloses a freely combinable filter element. See also... Figures 1-6 The freely combinable filter element includes a filter element body 1, end cap 1 2, end cap 2 3, sealing cap 4, and elastic retaining ring 5. The filter element body 1 has a through hole 11. End cap 1 2 and end cap 2 3 are respectively installed at opposite ends of the filter element body 1. Both end cap 1 2 and end cap 2 3 include a cover body 6 and a rotating ring 7. The rotating ring 7 is located on the side of the cover body 6 close to the filter element body 1 and is rotatably connected to the cover body 6. The rotation axis of the rotating ring 7 is parallel to the axis of the filter element body 1.

[0030] See Figures 1-6The elastic retaining ring 5 has a clearance notch 51. Several protrusions 8 are fixed on the cover body 6 of the end cap 2. The protrusions 8 are located on the side of the cover body 6 away from the rotating ring 7 and are evenly distributed circumferentially along the outer periphery of the through hole 11. The outer peripheral wall of the protrusion 8 has a slot 81. One end of the cover 4 is closed. Several grooves 9 are provided on the outer peripheral walls of the cover body 6 and the cover 4 of the end cap 2. The number and position of the grooves 9 correspond one-to-one with the number and position of the protrusions 8. The grooves 9 are for the protrusions 8 to be inserted. The outer peripheral walls of the cover body 6 and the cover 4 of the end cap 2 have slots 10. Slots 10 and grooves 9 are connected. When the protrusion 8 is inserted into the groove 9, slots 1 81 and slots 2 10 are aligned and connected and spliced ​​to form a positioning ring groove 13 for the elastic retaining ring 5 to be inserted. In this embodiment, the elastic retaining ring 5 is made of plastic.

[0031] See Figures 1-6 Each cover 6 has a limiting block 14 fixed on the outer wall near the filter element body 1. The through hole 11 allows the limiting block 14 to be inserted. Each cover 6 also has several positioning blocks 15 fixed on the outer wall near the filter element body 1. The positioning blocks 15 are evenly distributed around the outer periphery of the limiting block 14. The outer wall of the filter element body 1 has a positioning groove 12. The number and position of the positioning groove 12 correspond one-to-one with the number and position of the positioning block 15. The positioning groove 12 allows the positioning block 15 to be inserted.

[0032] See Figures 1-6 Each rotating ring 7 has a limiting rod 16 and a limiting rod 27 fixed on the outer side wall near the filter body 1. The limiting rod 16 and the limiting rod 27 are located on opposite sides of the filter body 1. Each limiting rod 16 has two extension blocks 18 fixed at intervals on the side away from the rotating ring 7. Each extension block 18 has a locking block 19 fixed on the side away from each other. Each locking block 19 has a guide surface 20 machined on the side away from the limiting rod 16. The guide surface 20 is inclined towards the limiting rod 16 and away from the other extension block 18. Each locking block 19 also has a contact surface 21 machined on the outer side wall away from the extension block 18. The contact surface 21 is located on the side of the guide surface 20 near the limiting rod 16 and parallel to the extension block 18. In this embodiment, the extension block 18 and the locking block 19 are both made of plastic.

[0033] See Figures 1-6 On the outer side wall of the limiting rod 17 away from the rotating ring 7, there is a slot 171 for the locking block 19 and the extension block 18 to be inserted. On the inner wall of each slot 171, there is a positioning hole 172 for the locking block 19 to be inserted. The positioning hole 172 is located on the side of the slot 171 away from the other slot 171.

[0034] In actual use, when it is necessary to clean the filter body 1, insert your finger into the positioning hole 172 and press the contact surface 21 on the locking block 19 on the two extension blocks 18, so that the two extension blocks 18 deform and the locking block 19 disengages from the positioning hole 172. Then move the end cap 1 2 / end cap 2 3 away from the filter body 1, so that the extension blocks 18 and locking blocks 19 disengage from the locking groove 3 171. The filter body 1 can then be removed from the end cap 1 2 and end cap 2 3 for separate cleaning, making it more convenient to clean the filter body 1.

[0035] After cleaning, insert the positioning blocks 15 on end cap 12 and end cap 23 into the through hole 11. The limiting rod 27 presses against the guide surface 20, thereby squeezing the locking block 19, causing the extension block 18 to deform, so that the extension block 18 and the locking block 19 can be inserted into the locking groove 3 171. When the locking block 19 and the positioning hole 172 are aligned, the extension block 18 resets so that the locking block 19 is inserted into the positioning hole 172. By the locking block 19 abutting against the inner wall of the positioning hole 172, the connection between the limiting rod 16 and the limiting rod 27 can be realized, thereby positioning end cap 12 and end cap 23, and completing the splicing of the filter element.

[0036] When a lot of impurities accumulate on the outside of the filter element body 1, rotate the rotating ring 7. The rotating ring 7 drives the first limiting rod 16 and the second limiting rod 17 to move, thereby scraping off most of the impurities attached to the outside of the filter element body 1. This can extend the filtration time of the filter element body 1, reduce the frequency of disassembling the filter element body 1 for separate cleaning, and make it more convenient to use.

[0037] The implementation principle of a freely combinable filter element in this application embodiment is as follows:

[0038] Insert the protrusion 8 into the groove 9, then open the elastic retaining ring 5, align the elastic retaining ring 5 with the positioning ring groove 13, and then release the elastic retaining ring 5. The elastic retaining ring 5 will reset and be inserted into the positioning ring groove 13. By abutting against the inner walls of the first groove 81 and the second groove 10, two adjacent filter element bodies 1 can be positioned. The connection and positioning between the cover 4 and the filter element body 1 is similar. Multiple filter element bodies 1 can be spliced ​​as needed. After splicing, cover one end of the filter element body 1 with the cover 4 so that the filtered material flows out only from the other end of the filter element. This allows for flexible adjustment of the filter element length to meet diverse needs. Users do not need to purchase filter elements of different specifications, reducing usage costs.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A freely combinable filter element, characterized in that: The filter includes a filter body (1), end cap 1 (2), end cap 2 (3), sealing cap (4), and elastic retaining ring (5). End cap 1 (2) and end cap 2 (3) are respectively located at both ends of the filter body (1). End cap 1 (2) is provided with a protrusion (8). End cap 2 (3) and sealing cap (4) are provided with grooves (9) for the protrusion (8) to be inserted. Elastic retaining ring (5) is provided with a clearance notch (51). The outer peripheral wall of the protrusion (8) is provided with a retaining groove 1 (81). The outer peripheral wall of end cap 2 (3) and sealing cap (4) is provided with a retaining groove 2 (10). When the protrusion (8) is inserted into the groove (9), retaining groove 1 (81) and retaining groove 2 (10) are spliced ​​together to form a positioning ring groove (13) for the elastic retaining ring (5) to be inserted.

2. The freely combinable filter element according to claim 1, characterized in that: The filter element body (1) has a through hole (11). The end cap one (2) and end cap two (3) are each provided with a limiting block (14), a limiting rod one (16) and a limiting rod two (17). The through hole (11) is for the limiting block (14) to be inserted. The limiting rod one (16) and the limiting rod two (17) are located on both sides of the filter element body (1). The side of the limiting rod one (16) away from the end cap one (2) is provided with two extension blocks (18) spaced apart. The two extension blocks (18) are far apart from each other. Each side is provided with a locking block (19). The side of the locking block (19) away from the first limiting rod (16) is provided with a guide surface (20). The guide surface (20) is inclined towards the first limiting rod (16) away from the other extension block (18). The second limiting rod (17) is provided with a locking groove (171) for the locking block (19) and the extension block (18) to be engaged. The inner wall of the locking groove (171) is provided with a positioning hole (172) for the locking block (19) to be engaged.

3. The freely combinable filter element according to claim 2, characterized in that: Both end cap one (2) and end cap two (3) include a cover body (6) and a rotating ring (7) rotatably connected to the cover body (6). The protrusion (8) is provided on the cover body (6) of end cap one (2). The groove (9) and the slot two (10) are provided on the cover body (6) of end cap two (3). The limiting block (14) is provided on the cover body (6). The limiting rod one (16) and the limiting rod two (17) are provided on the rotating ring (7). The rotation axis of the rotating ring (7) is parallel to the axis of the filter element body (1).

4. The freely combinable filter element according to claim 3, characterized in that: The cover (6) is provided with a plurality of positioning blocks (15), which are distributed around the outer periphery of the limiting block (14). The filter body (1) is provided with positioning grooves (12) for the positioning blocks (15) to be inserted.

5. The freely combinable filter element according to claim 2, characterized in that: The card block (19) is provided with a contact surface (21), which is located on the side of the guide surface (20) near the limiting rod (16) and parallel to the extension block (18).

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