Adjustable length filter cartridge

Abstract

This application relates to an adjustable-length filter element, comprising a filter element body, end cap one, and end cap two. The filter element body has a through hole. End cap one has several protrusions with perforations. End cap two has a groove with a positioning block on its inner wall. End cap one has an insertion block, and end cap two has a sliding block with a slot. End cap two also has an elastic element. The filter elements can be arbitrarily spliced ​​to obtain filter elements of different lengths to meet the needs of different filtration equipment. Users or distributors do not need to stock multiple length specifications of filter elements, reducing storage space occupation and lowering procurement costs and management complexity.

Description

Technical Field

[0001] This application relates to the field of filter elements, and more particularly to an adjustable length filter element. Background Technology

[0002] The filter element is the core component of the filter. Filter elements are commonly used in filtration industries such as oil filtration, water filtration, and air filtration to remove small amounts of impurities from the filter medium, thus protecting the equipment and ensuring air cleanliness.

[0003] For example, the utility model patent with patent publication number CN212039167U discloses a filter element with replaceable filter media, including filter media, and also including: an extrusion barrel body, end caps and a partition; the extrusion barrel body is used to hold the filter media; the end caps are respectively connected to the upper and lower ends of the extrusion barrel body; the partition is respectively connected to the inner side of the end caps at the upper and lower ends to prevent the filter media from leaking out and to allow water to flow through.

[0004] Using the above-mentioned filter elements, in order to meet the needs of different filtration equipment, users or distributors must stock filter elements of various lengths and specifications. This not only occupies a lot of storage space, but also increases procurement costs and management difficulty, which needs to be improved. Summary of the Invention

[0005] To reduce the procurement cost and management difficulty of filter elements, this application provides an adjustable length filter element.

[0006] This application provides an adjustable-length filter element, which adopts the following technical solution: An adjustable length filter element includes a filter element body and end cap 1 and end cap 2 disposed at both ends of the filter element body. The filter element body has a through hole. The end cap 1 has a plurality of protrusions. The plurality of protrusions are located on the side of the end cap 1 away from the filter element body and are distributed around the outer periphery of the through hole. The protrusions have through holes. The end cap 2 has a groove for the protrusions to be engaged. The inner wall of the groove has a positioning block. The positioning block is located at one end of the groove along the outer periphery of the through hole, and the through hole allows the positioning block to pass through. The first end cap is provided with an insertion block, and the second end cap is slidably connected with a slider. The slider slides closer to or away from the filter element body. The slider has a slot for the insertion block to be inserted. When the positioning block passes through the perforation, the insertion block and the slot are aligned. The second end cap is provided with an elastic element, which abuts against the slider, causing the slider to tend to move away from the filter element body.

[0007] By adopting the above technical solution, the slider is moved closer to the filter element body, so that the slot is located on the side of the groove closer to the filter element body. Then, the protrusion is inserted into the groove on the second end cap. At this time, the positioning block and the perforation are aligned. Then, the filter element body is rotated so that the positioning block passes through the perforation. At this time, the insert block and the slot are aligned. The slider is released, and the slider moves away from the filter element body under the action of the elastic element, so that the insert block is inserted into the slot. The insert block abuts against the inner wall of the slot to prevent rotation between the first and second end caps. The positioning block abuts against the inner wall of the perforation to realize the connection between the first and second end caps, thereby realizing the splicing between two filter elements. The filter elements can be spliced ​​arbitrarily as needed to obtain filter elements of different lengths to meet the needs of different filtration equipment. Users or distributors do not need to stock filter elements of various lengths, reducing the occupation of storage space and reducing procurement costs and management difficulty.

[0008] Optionally, the second end cap has a mounting groove, the slider is slidably connected to the mounting groove, and the elastic element is located in the mounting groove and between the slider and the bottom of the mounting groove.

[0009] By adopting the above technical solution, the elastic ring is surrounded by end cap two and slider to reduce the corrosion of the elastic component by water vapor and dust, which helps to extend the service life of the elastic component.

[0010] Optionally, a support cover is also included. The first end cover includes a base on the filter element body and an abutment portion on the base. The abutment portion is located on the side of the base away from the filter element body. A protrusion is provided on the abutment portion, and an insert is provided on the base. The second end cover includes a base on the filter element body and an abutment portion on the base. The abutment portion is located on the side of the base away from the filter element body. A mounting groove is provided on the base. A groove and a positioning block are provided on the abutment portion. A threaded groove is provided on the support cover for threaded connection between the abutment portion and the abutment portion.

[0011] By adopting the above technical solution, after the filter elements are spliced ​​together, the support cover is installed on the end cover of the end filter element through the threaded engagement between the abutment part one and the threaded groove, and another support cover is installed on the end cover of the end filter element located at the other end through the threaded engagement between the abutment part two and the threaded groove. When the spliced ​​filter elements are installed on the filtration equipment, the support cover abuts against the filtration equipment to improve the stability of the filter elements installed on the filtration equipment and reduce shaking.

[0012] Optionally, a limiting block is provided on the inner wall of the mounting groove, and a limiting groove for accommodating the limiting block is provided on the slider.

[0013] By adopting the above technical solution, a limiting block and a limiting groove are set, and the limiting block abuts against the inner wall of the limiting groove, thereby preventing relative rotation between the slider and the end cover.

[0014] Optionally, the slider is provided with a sealing ring. When the insert is inserted into the slot, the sealing ring is located between the first end cap and the second end cap and abuts against the first end cap and the second end cap.

[0015] By adopting the above technical solution and setting a sealing ring, the sealing ring is pressed against end cap one and end cap two. On the one hand, the sealing performance between end cap one and end cap two is improved, reducing the leakage of filter media in the through hole. On the other hand, the friction between the slider and end cap one / end cap two is increased, so as to reduce the situation where vibration during the operation of the filter equipment causes the slider to move and the insert to disengage from the slot, further improving the connection stability between filter elements.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. Filter cartridges can be arbitrarily spliced ​​as needed to obtain filter cartridges of different lengths to meet the needs of different filtration equipment. Users or distributors do not need to stock multiple length specifications of filter cartridges, which reduces the occupation of storage space and also reduces procurement costs and management difficulty. 2. After all the filter elements are assembled, install the support cover on the two end filter elements. When installing the assembled filter elements onto the filtration equipment, the support cover and the filtration equipment will abut against each other to improve the stability of the filter elements on the filtration equipment and reduce shaking. 3. By setting a sealing ring, on the one hand, the sealing performance between end cap one and end cap two is improved, reducing the leakage of filter media in the through hole. On the other hand, the friction between the slider and end cap one / end cap two is increased to reduce the situation where vibration during the operation of the filter equipment causes the slider to move and the insert to disengage from the slot, further improving the connection stability between filter elements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of this application.

[0018] Figure 2 This is a cross-sectional view of an embodiment of this application.

[0019] Figure 3 for Figure 2 The enlarged view of section A mainly shows the structure of end cap one, end cap two, and slider.

[0020] Figure 4 This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the perforation and the insert.

[0021] Figure 5This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the groove and the positioning block.

[0022] Figure 6 This is a partial structural diagram of an embodiment of this application, mainly showing the structure of the limiting groove and the slot.

[0023] Figure 7 for Figure 2 The enlarged view of section B mainly shows the structure of the threaded groove.

[0024] Explanation of reference numerals in the attached drawings: 1. Filter element body; 11. Through hole; 2. End cap one; 21. Base one; 22. Abutment part one; 3. End cap two; 31. Base two; 311. Mounting groove; 32. Abutment part two; 321. Groove; 4. Support cover; 41. Threaded groove; 5. Protrusion; 51. Through hole; 6. Positioning block; 7. Insertion block; 8. Limiting block; 9. Sliding block; 91. Sliding part; 911. Limiting groove; 92. Extension part; 921. Slot; 10. Elastic element; 12. Sealing ring. Detailed Implementation

[0025] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0026] This application discloses an adjustable-length filter element. See also... Figures 1-7 The adjustable length filter element includes a filter element body 1, an end cap 1 2, an end cap 2 3, and a support cap 4. The filter element body 1 has a through hole 11, which penetrates the filter element body 1 along its length.

[0027] See Figures 1-7 End cap 1 2, end cap 2 3 and support cap 4 are all annular. End cap 1 2 and end cap 2 3 are respectively installed at both ends of filter element body 1. End cap 1 2 includes base 1 21 and abutment part 1 22. Base 1 21 is fixed on filter element body 1. Abutment part 1 22 is fixed on the side of base 1 21 away from filter element body 1. Several protrusions 5 are fixed on the outer wall of abutment part 1 22 away from filter element body 1. Several protrusions 5 are evenly distributed around the outer periphery of through hole 11. Each protrusion 5 has a through hole 51 on its outer wall. The through hole 51 passes through the protrusion 5 along the outer periphery of through hole 11.

[0028] See Figures 1-7The end cap 2 3 includes a base 2 31 and an abutment part 2 32. The base 2 31 is fixed on the filter element body 1, and the abutment part 2 32 is fixed on the side of the base 2 31 away from the filter element body 1. Several grooves 321 are provided on the outer wall of the abutment part 2 32 away from the filter element body 1. The number and position of the grooves 321 correspond one-to-one with the number and position of the protrusions 5. The grooves 321 are for the protrusions 5 to be inserted. A positioning block 6 is fixed on the inner wall of each groove 321. The positioning block 6 is located at one end of the groove 321 along the outer periphery of the through hole 11, and the through hole 51 is for the positioning block 6 to pass through.

[0029] See Figures 1-7 A plurality of insert blocks 7 are fixed on the outer peripheral wall of the base 1 away from the filter element body 1. The plurality of insert blocks 7 are evenly spaced around the outer periphery of the abutment part 22. An installation groove 311 is provided on the outer peripheral wall of the base 2 away from the filter element body 1. The installation groove 311 is an annular groove and is arranged around the outer periphery of the abutment part 2 32. The inner annular wall of the installation groove 311 is flush with the outer peripheral wall of the abutment part 2 32. A plurality of limiting blocks 8 are fixed on the inner wall of the installation groove 311. The plurality of limiting blocks 8 are located on the side of the installation groove 311 away from the abutment part 2 32 and are evenly spaced around the outer periphery of the abutment part 2 32.

[0030] See Figures 1-7 A slider 9 is slidably connected to the base 31. The slider 9 includes a sliding part 91 and an extension part 92. The sliding part 91 is slidably connected to the mounting groove 311 and slides closer to or away from the filter body 1. A limiting groove 911 is opened on the outer wall of the sliding part 91. The number and position of the limiting groove 911 correspond one-to-one with the number and position of the limiting block 8. The limiting groove 911 penetrates the sliding part 91 along the sliding direction of the sliding part 91 and is used to accommodate the limiting block 8. The limiting block 8 abuts against the inner wall of the limiting groove 911, thereby preventing relative rotation between the sliding part 91 and the end cover 3.

[0031] See Figures 1-7 The extension 92 is located outside the base 31 and fixed to the sliding part 91 on the side away from the filter body 1. Several slots 921 are provided on the outer wall of the extension 92 away from the sliding part 91. The number and position of the slots 921 correspond one-to-one with the number and position of the inserts 7. The slots 921 are for inserts 7 to be inserted. When the positioning block 6 passes through the through hole 51, the inserts 7 and the slots 921 are aligned.

[0032] See Figures 1-7An elastic element 10 is installed on the base 31. The elastic element 10 is located in the mounting groove 311 and between the sliding part 91 and the bottom of the mounting groove 311. The opposite ends of the elastic element 10 are fixedly connected to the inner wall of the bottom of the mounting groove 311 and the sliding part 91, respectively. The elastic element 10 abuts against the sliding part 91, so that the sliding part 91 tends to move away from the filter element body 1. In this embodiment, the elastic element 10 is a spring.

[0033] See Figures 1-7 A sealing ring 12 is fixed on the sliding part 91. The sealing ring 12 is located on the side of the sliding part 91 near the abutment part 32 and is arranged around the outer periphery of the abutment part 32. When the insert 7 is inserted into the slot 921, the sealing ring 12 is located between the end cap 2 and the end cap 3 and abuts against the end cap 2 and the end cap 3 to improve the sealing between the end cap 2 and the end cap 3, reduce the leakage of the filter medium in the through hole 11, and increase the friction between the slider 9 and the end cap 2 / end cap 3 to reduce the situation where the slider 9 moves due to vibration during the operation of the filter equipment, causing the insert 7 to disengage from the slot 921. In this embodiment, the sealing ring 12 is made of rubber.

[0034] See Figures 1-7 A threaded groove 41 is provided on the outer wall of the support cover 4, and the threaded groove 41 is used for threaded connection of the first abutment part 22 and the second abutment part 32.

[0035] The implementation principle of an adjustable-length filter element in this application embodiment is as follows: Move the extension 92 closer to the filter body 1 so that the slot 921 is located on the side of the groove 321 closer to the filter body 1. Then, insert the protrusion 5 into the groove 321 on the end cap 2 3. At this time, the positioning block 6 and the through hole 51 are aligned. Then rotate the filter body 1 so that the positioning block 6 passes through the through hole 51. At this time, the insert 7 and the slot 921 are aligned. Release the extension 92. The sliding part 91 moves away from the filter body 1 under the action of the elastic member 10 so that the insert 7 is inserted into the slot 921. The insert 7 abuts against the inner wall of the slot 921 to prevent rotation between the end cap 1 2 and the end cap 2 3. The positioning block 6 abuts against the inner wall of the through hole 51 to realize the connection between the end cap 1 2 and the end cap 2 3, thereby realizing the splicing between the two filter elements.

[0036] The filter elements can be arbitrarily spliced ​​as needed to obtain filter elements of different lengths to meet the needs of different filtration equipment. Users or distributors do not need to stock filter elements of various lengths, which reduces the space occupied in storage and also reduces procurement costs and management difficulty.

[0037] After the filter elements are assembled, the support cover 4 is installed on the end cover 2 of the end filter element through the threaded engagement between the abutment part 22 and the threaded groove 41. Then, another support cover 4 is installed on the end cover 3 of the end filter element located at the other end through the threaded engagement between the abutment part 32 and the threaded groove 41. When the assembled filter element is installed on the filtration equipment, the support cover 4 abuts against the filtration equipment to improve the stability of the filter element installed on the filtration equipment and reduce shaking.

[0038] 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. An adjustable-length filter element, characterized in that: The filter includes a filter body (1) and end caps 1 (2) and 2 (3) located at both ends of the filter body (1). The filter body (1) has a through hole (11). The end cap 1 (2) has a plurality of protrusions (5). The plurality of protrusions (5) are located on the side of the end cap 1 (2) away from the filter body (1) and are distributed around the outer periphery of the through hole (11). The protrusions (5) have through holes (51). The end cap 2 (3) has a groove (321) for the protrusions (5) to be inserted. The inner wall of the groove (321) has a positioning block (6). The positioning block (6) is located at one end of the groove (321) along the outer periphery of the through hole (11), and the through hole (51) allows the positioning block (6) to pass through. The first end cap (2) is provided with an insert (7), and the second end cap (3) is slidably connected with a slider (9). The slider (9) slides closer to or away from the filter body (1). The slider (9) is provided with a slot (921) for the insert (7) to be inserted. When the positioning block (6) passes through the perforation (51), the insert (7) and the slot (921) are aligned. The second end cap (3) is provided with an elastic element (10). The elastic element (10) abuts against the slider (9), so that the slider (9) tends to move away from the filter body (1).

2. The adjustable-length filter element according to claim 1, characterized in that: The end cap 2 (3) has an installation groove (311) and the slider (9) is slidably connected in the installation groove (311). The elastic element (10) is located in the installation groove (311) and between the slider (9) and the bottom of the installation groove (311).

3. The adjustable-length filter element according to claim 2, characterized in that: It also includes a support cover (4), the first end cover (2) includes a base (21) disposed on the filter element body (1) and an abutment part (22) disposed on the base (21), the abutment part (22) is located on the side of the base (21) away from the filter element body (1), the protrusion (5) is disposed on the abutment part (22), the insert (7) is disposed on the base (21), and the second end cover (3) includes a base (3) disposed on the filter element body (1). 1) and abutting part 2 (32) provided on the base 2 (31), the abutting part 2 (32) is located on the side of the base 2 (31) away from the filter body (1), the mounting groove (311) is provided on the base 2 (31), the groove (321) and the positioning block (6) are provided on the abutting part 2 (32), and the support cover (4) is provided with a threaded groove (41), the threaded groove (41) is used for threaded connection of the abutting part 1 (22) / abutting part 2 (32).

4. The adjustable-length filter element according to claim 2, characterized in that: The inner wall of the mounting groove (311) is provided with a limiting block (8), and the slider (9) is provided with a limiting groove (911) for accommodating the limiting block (8).

5. The adjustable-length filter element according to claim 1, characterized in that: The slider (9) is provided with a sealing ring (12). When the insert (7) is inserted into the slot (921), the sealing ring (12) is located between the first end cap (2) and the second end cap (3) and abuts against the first end cap (2) and the second end cap (3).

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