Oil absorption filter

Abstract

The utility model discloses an oil absorption filter, and relates to the technical field of filters, the oil absorption filter comprises a filter cylinder and a filter core, the side wall of the filter cylinder is fixedly connected with a plurality of oil outlet pipes, one end of the filter cylinder is in threaded connection with a filter cover, the other end of the filter cylinder is provided with an oil inlet, and the filter cylinder and the filter cover are provided with installation assemblies used for dismounting the filter core. Through cooperative arrangement of the ejector rod, a first spring, a self-sealing push plate and other structures, during use, the filter cover is taken down, the first spring rebounds to push the filter element to slide on the ejector rod while the filter cover is taken, the oil inlet end of the filter element abuts against the self-sealing push plate, and the filter element is pressed against the self-sealing push plate, so that the oil inlet end of the filter element is pressed against the self-sealing push plate, and the oil inlet end of the filter element is pressed against the self-sealing push plate. The oil inlet end of the filter element is blocked, oil leakage when the filter element is taken out is prevented, then the strong magnet is separated from the ejector rod for adsorption, the filter element can be taken out from the ejector rod for replacement, and the problem that in the dismounting process, oil in the filter element is prone to leakage, and consequently operation is inconvenient is solved as much as possible.

Description

Technical Field

[0001] This application relates to the field of filter technology, and in particular to an oil suction filter. Background Technology

[0002] An oil suction filter is a device installed at the oil pump's suction port. Its main purpose is to protect the oil pump and other hydraulic components by preventing the intake of contaminants and impurities, thereby effectively controlling contamination in the hydraulic system and ensuring its cleanliness. The working principle of an oil suction filter is to filter impurities and contaminants from the hydraulic system through its internal filter element or screen, ensuring the cleanliness of the oil drawn into the pump and preventing impurities from entering the hydraulic system and causing damage. This type of filter is typically designed as a coarse filter to accommodate the pump's self-priming performance.

[0003] Existing oil suction filters require replacement or cleaning of the filter element after a certain period of use. However, during disassembly, the oil inside the filter element is prone to leakage, causing inconvenience in operation. Utility Model Content

[0004] The purpose of this invention is to solve or at least alleviate the problem that existing oil suction filters require replacement or cleaning of the filter element after a certain period of use, but the oil inside the filter element is prone to leakage during disassembly, causing inconvenience in operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An oil suction filter includes a filter cartridge and a filter element. Multiple oil outlet pipes are fixedly connected to the side wall of the filter cartridge. A filter cover is threaded to one end of the filter cartridge, and an oil inlet is provided at the other end. The filter cartridge and the filter cover are provided with an installation assembly for assembling and disassembling the filter element. The installation assembly includes a push rod rotatably connected to one side wall of the filter cover. The end of the push rod away from the filter cover passes through the filter element and is located inside the filter element. A fixing block is threaded to the push rod. A first spring is sleeved between the push rod and the fixing block and the filter element. A strong magnet is adsorbed and connected to one end of the push rod inside the filter element. A connecting rod is fixedly connected to the other end of the strong magnet. A self-sealing push plate for sealing the oil inlet of the filter element is fixedly connected to the end of the connecting rod away from the strong magnet. An annular baffle is fixedly connected to the inner wall of the filter cartridge at the oil inlet. The end of the filter element away from the filter cover abuts against the annular baffle. A protective assembly is provided on the filter cartridge to prevent oil from directly entering the filter cartridge.

[0007] By adopting the above technical solution, during use, the filter cover and filter cartridge are threaded together, causing the filter element to abut against the annular baffle. Simultaneously, the filter element abuts against the annular baffle, compressing the first spring. This causes the push rod to slide inside the filter element, pushing the strong magnet, which in turn pushes the self-sealing push plate away from the filter element, opening the oil inlet of the filter element. The filter cartridge is then inserted into the oil tank, allowing the oil in the tank to enter the filter element through the inlet. The oil is then filtered through the filter element and discharged from the outlet pipe. When replacement is needed, the filter cover is removed. Simultaneously, the first spring rebounds, pushing the filter element to slide on the push rod, abutting the oil inlet of the filter element against the self-sealing push plate, sealing the oil inlet and preventing oil leakage during filter element removal. The strong magnet then disengages from the push rod, allowing the filter element to be removed for replacement. This method minimizes the risk of oil leakage during disassembly, preventing operational inconvenience.

[0008] Optionally, the protective assembly includes a mounting bracket fixedly connected to one end of the filter cartridge near the oil inlet, a mounting plate fixedly connected inside the mounting bracket, a second spring fixedly connected to one side wall of the mounting plate near the filter cartridge, and a self-sealing valve plate that abuts against the annular baffle fixedly connected to one end of the second spring away from the mounting plate.

[0009] By adopting the above technical solution, when one end of the filter element abuts against the annular baffle and the self-sealing push plate moves away from the filter element, the self-sealing push plate will push the self-sealing valve plate away from the annular baffle, squeezing the second spring and opening the oil inlet. When the filter element is removed, the self-sealing push plate moves away from the self-sealing valve plate, and the second spring rebounds to abut against the annular baffle. This can prevent the oil in the oil tank from directly entering the filter cartridge, thus preventing the filtration of impurities.

[0010] Optionally, a first annular sealing ring is fixedly connected to the end of the filter cartridge away from the oil inlet to improve the sealing between the filter cover and the filter cartridge.

[0011] By adopting the above technical solutions, the sealing performance between the filter cover and the filter cartridge can be improved through the first annular sealing ring, preventing oil from seeping through the gap between the filter cover and the filter cartridge.

[0012] Optionally, the end of the filter element away from the first spring is fixedly connected to a second annular sealing ring for improving the sealing between the filter element and the annular baffle and the self-sealing push plate.

[0013] By adopting the above technical solutions, the sealing performance between the filter element and the annular baffle or between the filter element and the self-sealing push plate can be improved through the second annular sealing ring, preventing oil penetration.

[0014] Optionally, a third annular sealing ring is fixedly connected to the side wall of the self-sealing valve plate near the annular baffle to improve the sealing between the self-sealing valve plate and the annular baffle.

[0015] By adopting the above technical solutions, the sealing performance between the self-sealing valve plate and the annular baffle can be improved through the third annular sealing ring, preventing oil from seeping through the gap between the self-sealing valve plate and the annular baffle.

[0016] Optionally, the second spring is provided with a positioning rod, one end of which is fixedly connected to the self-sealing valve plate, and the other end of which passes through the mounting plate.

[0017] By adopting the above technical solution, the stability of the second spring can be improved by using the positioning rod, preventing the second spring from shaking or bending when pushing the self-sealing valve plate, which would cause gaps between the self-sealing valve plate and the annular baffle.

[0018] Optionally, the strong magnet has a socket at one end near the top rod, and a plug rod that matches the socket is fixedly connected to the end of the top rod near the strong magnet.

[0019] By adopting the above technical solutions, the stability of the adsorption between the strong magnet and the top rod can be improved by inserting the plug rod into the socket.

[0020] Optionally, an absorbent sponge is fitted onto the end of the filter cartridge away from the oil inlet.

[0021] By adopting the above technical solutions, when the filter element is removed from the filter cartridge, the adsorption sponge can adsorb and clean the oil residue on the side wall of the filter element, preventing oil from dripping onto various places when the filter element is removed.

[0022] In summary, the beneficial effects of this application are as follows:

[0023] 1. This application utilizes the coordinated structure of a push rod, a first spring, and a self-sealing push plate. During use, the filter cover and filter cartridge are threaded together, causing the filter element to abut against the annular baffle. Simultaneously, the filter element abuts against the annular baffle, compressing the first spring. This causes the push rod to slide within the filter element, pushing a strong magnet, which in turn pushes the self-sealing push plate away from the filter element, opening the oil inlet of the filter element. The filter cartridge is then inserted into the oil tank, allowing oil from the tank to enter the filter element through the inlet and pass through the filter element. The filter fluid is filtered into the filter cartridge and then discharged from the outlet pipe. When replacement is needed, the filter cover is removed. As the filter cover is removed, the first spring will rebound and push the filter element to slide on the push rod, making the oil inlet end of the filter element abut against the self-sealing push plate, thus sealing the oil inlet end of the filter element and preventing oil leakage when removing the filter element. Then, the strong magnet is detached from the push rod, and the filter element can be removed from the push rod for replacement. This minimizes the problem of oil leakage inside the filter element during disassembly, which could cause inconvenience to operation.

[0024] 2. When one end of the filter element is brought into contact with the annular baffle and the self-sealing pusher moves away from the filter element, the self-sealing pusher will push the self-sealing valve plate away from the annular baffle, compressing the second spring and opening the oil inlet. When the filter element is removed, the self-sealing pusher moves away from the self-sealing valve plate, and the second spring rebounds to bring the self-sealing valve plate into contact with the annular baffle. This prevents oil from the tank from directly entering the filter cartridge, thus preventing impurities from being filtered. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 An exploded view of the connection structure between the top rod and the strong magnet of this utility model;

[0027] Figure 3 For the present utility model Figure 1 Enlarged structural diagram of region A in the middle;

[0028] Figure 4 For the present utility model Figure 1 A magnified structural diagram of region B in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Filter cartridge; 2. Filter element; 3. Oil outlet pipe; 4. Filter cover; 5. Oil inlet; 6. Push rod; 7. Fixing block; 8. First spring; 9. Strong magnet; 10. Connecting rod; 11. Self-sealing push plate; 12. Annular baffle; 13. Mounting bracket; 14. Mounting plate; 15. Second spring; 16. Self-sealing valve plate; 17. First annular sealing ring; 18. Second annular sealing ring; 19. Third annular sealing ring; 20. Positioning rod; 21. Insertion hole; 22. Insertion rod; 23. Absorbent sponge. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] Please see Figure 1-3 An oil suction filter includes a filter cartridge 1 and a filter element 2. The filter element 2 is located inside the filter cartridge 1. Multiple oil outlet pipes 3 are fixedly connected to the side wall of the filter cartridge 1. A filter cover 4 is threaded to one end of the filter cartridge 1. An oil inlet 5 is opened at the other end of the filter cartridge 1. The filter cartridge 1 and the filter cover 4 are provided with an installation assembly for disassembling and assembling the filter element 2. The installation assembly includes a push rod 6, a fixing block 7, a first spring 8, a strong magnet 9, a connecting rod 10, a self-sealing push plate 11, and an annular baffle 12.

[0032] The push rod 6 is rotatably connected to one side wall of the filter cover 4 and located inside the filter cartridge 1. The end of the push rod 6 away from the filter cover 4 passes through the filter element 2 and is located inside the filter element 2. The fixing block 7 is threadedly connected to the push rod 6 and away from the filter element 2. The first spring 8 is sleeved on the push rod 6 and located between the fixing block 7 and the filter element 2. The strong magnet 9 is attracted and connected to one end of the push rod 6 located inside the filter element 2. The other end of the strong magnet 9 is fixedly connected to the connecting rod 10. The self-sealing push plate 11 is fixedly connected to the end of the connecting rod 10 away from the strong magnet 9 and is used to seal the oil inlet end of the filter element 2. The annular baffle 12 is fixedly connected to the inner wall of the filter cartridge 1 and located at the oil inlet 5. The end of the filter element 2 away from the filter cover 4 abuts against the annular baffle 12. The filter cartridge 1 is provided with a protective component to prevent oil from directly entering the filter cartridge 1.

[0033] In use, by threading the filter cover 4 and the filter cartridge 1 together, the filter element 2 abuts against the annular baffle 12. Simultaneously, the filter element 2 abuts against the annular baffle 12, compressing the first spring 8. This causes the push rod 6 to slide within the filter element 2, pushing the strong magnet 9. The connecting rod 10 then pushes the self-sealing push plate 11 away from the filter element 2, opening the oil inlet of the filter element 2. The filter cartridge 1 is then inserted into the oil tank, allowing the oil in the tank to enter the filter element 2 through the oil inlet 5. The oil is then filtered through the filter element 2 and into the filter cartridge 1. Oil is discharged through outlet pipe 3. When replacement is needed, filter cover 4 is removed. At the same time as filter cover 4 is removed, the first spring 8 will rebound and push filter element 2 to slide on push rod 6, so that the oil inlet end of filter element 2 abuts against self-sealing push plate 11, thus sealing the oil inlet end of filter element 2 and preventing oil leakage when filter element 2 is removed. Then, the strong magnet 9 is disengaged from push rod 6, and filter element 2 can be removed from push rod 6 for replacement. This minimizes the problem of oil leakage in filter element 2 during disassembly, which could cause inconvenience to operation.

[0034] Reference Figure 1 and Figure 3 The protective assembly includes a mounting bracket 13 fixedly connected to one end of the filter cartridge 1 near the oil inlet 5. The mounting bracket 13 is hollowed out to facilitate the passage of oil. A mounting plate 14 is fixedly connected inside the mounting bracket 13. A second spring 15 is fixedly connected to the side wall of the mounting plate 14 near the filter cartridge 1. A self-sealing valve plate 16 that abuts against the annular baffle 12 is fixedly connected to the end of the second spring 15 away from the mounting plate 14. When one end of the filter element 2 abuts against the annular baffle 12 and the self-sealing push plate 11 moves away from the filter element 2, the self-sealing push plate 11 will push the self-sealing valve plate 16 away from the annular baffle 12, squeezing the second spring 15 and opening the oil inlet 5. When the filter element 2 is removed, the self-sealing push plate 11 moves away from the self-sealing valve plate 16, and the second spring 15 rebounds to abut the self-sealing valve plate 16 against the annular baffle 12. This can prevent oil in the oil tank from directly entering the filter cartridge 1, thus preventing impurity filtration.

[0035] Reference Figure 4The end of the filter cartridge 1 away from the oil inlet 5 is fixedly connected to a first annular sealing ring 17 for improving the sealing between the filter cover 4 and the filter cartridge 1. The first annular sealing ring 17 can improve the sealing between the filter cover 4 and the filter cartridge 1 and prevent oil from seeping from the gap between the filter cover 4 and the filter cartridge 1.

[0036] Reference Figure 3 The end of the filter element 2 away from the first spring 8 is fixedly connected to a second annular sealing ring 18 for improving the sealing between the filter element 2 and the annular baffle 12 and the self-sealing push plate 11. The second annular sealing ring 18 can improve the sealing between the filter element 2 and the annular baffle 12 or the filter element 2 and the self-sealing push plate 11, preventing oil penetration.

[0037] Reference Figure 3 A third annular sealing ring 19 is fixedly connected to the side wall of the self-sealing valve plate 16 near the annular baffle 12 to improve the sealing performance between the self-sealing valve plate 16 and the annular baffle 12. The third annular sealing ring 19 can improve the sealing performance between the self-sealing valve plate 16 and the annular baffle 12 and prevent oil from seeping from the gap between the self-sealing valve plate 16 and the annular baffle 12.

[0038] Reference Figure 1 and Figure 3 The second spring 15 is provided with a positioning rod 20. One end of the positioning rod 20 is fixedly connected to the self-sealing valve plate 16, and the other end of the positioning rod 20 passes through the mounting plate 14. The positioning rod 20 can improve the stability of the second spring 15 and prevent the second spring 15 from shaking or bending when pushing the self-sealing valve plate 16, which would cause a gap between the self-sealing valve plate 16 and the annular baffle 12.

[0039] Reference Figure 2 The strong magnet 9 has an insertion hole 21 at one end near the top rod 6. The top rod 6 is fixedly connected to an insertion rod 22 that matches the insertion hole 21 at one end near the strong magnet 9. By inserting the insertion rod 22 into the insertion hole 21, the stability of the adsorption between the strong magnet 9 and the top rod 6 can be improved.

[0040] Reference Figure 1 An absorbent sponge 23 is fitted on the end of the filter cartridge 1 away from the oil inlet 5. When the filter element 2 is taken out of the filter cartridge 1, the absorbent sponge 23 can absorb and clean the oil residue on the side wall of the filter element 2, preventing oil from dripping everywhere when the filter element 2 is taken out.

[0041] The implementation principle of this application is as follows: In use, by threading the filter cover 4 and the filter cartridge 1 together, the filter element 2 abuts against the annular baffle 12. Simultaneously, the filter element 2 abuts against the annular baffle 12, compressing the first spring 8. This causes the push rod 6 to slide within the filter element 2, pushing the strong magnet 9. The connecting rod 10 then pushes the self-sealing push plate 11 away from the filter element 2, opening the oil inlet of the filter element 2. Simultaneously, as the self-sealing push plate 11 moves away from the filter element 2, it pushes the self-sealing valve plate 16 away from the annular baffle 12, compressing the second spring 15 and opening the oil inlet 5. Then, the filter cartridge 1 is inserted into the oil tank, allowing the oil in the tank to enter the filter element 2 through the oil inlet 5. The oil is then filtered through the filter element 2 into the filter cartridge 1 and exits through the oil outlet pipe. 3. When replacement is needed, remove the filter cover 4. As the filter cover 4 is removed, the first spring 8 will rebound and push the filter element 2 to slide on the push rod 6, abutting the oil inlet end of the filter element 2 against the self-sealing push plate 11, thus sealing the oil inlet end of the filter element 2 and preventing oil leakage when the filter element 2 is removed. At the same time, when the filter element 2 is removed, the self-sealing push plate 11 moves away from the self-sealing valve plate 16, and the second spring 15 rebounds to abut the self-sealing valve plate 16 against the annular baffle 12, which can prevent the oil in the oil tank from directly entering the filter cartridge 1, thus preventing impurities from being filtered. Then, the strong magnet 9 is detached from the push rod 6, and the filter element 2 can be removed from the push rod 6 for replacement. This minimizes the problem of oil leakage in the filter element 2 during disassembly, which could cause inconvenience to operation.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil suction filter, comprising a filter cartridge (1) and a filter element (2), wherein a plurality of oil outlet pipes (3) are fixedly connected to the side wall of the filter cartridge (1), a filter cover (4) is threadedly connected to one end of the filter cartridge (1), and an oil inlet (5) is provided at the other end of the filter cartridge (1), and the filter cartridge (1) and the filter cover (4) are provided with mounting components for assembling and disassembling the filter element (2), characterized in that: The mounting assembly comprises a jacking rod (6) rotatably connected to one side wall of the filter cover (4), one end of the jacking rod (6) away from the filter cover (4) penetrates through the filter element (2) and is located inside the filter element (2), a fixing block (7) is threadedly connected to the jacking rod (6), a first spring (8) is sleeved between the jacking rod (6) and the fixing block (7), a strong magnet (9) is suction-connected to one end of the jacking rod (6) inside the filter element (2), a connecting rod (10) is fixedly connected to the other end of the strong magnet (9), a self-sealing push plate (11) for plugging the oil inlet end of the filter element (2) is fixedly connected to one end of the connecting rod (10) away from the strong magnet (9), an annular baffle (12) is fixedly connected to the inner wall of the filter cartridge (1) at the oil inlet (5), one end of the filter element (2) away from the filter cover (4) abuts against the annular baffle (12), and a protection assembly for preventing oil from directly entering the filter cartridge (1) is arranged on the filter cartridge (1).

2. An oil absorption filter according to claim 1, characterized in that: The protection assembly comprises a mounting bracket (13) fixedly connected to one end of the filter cartridge (1) close to the oil inlet (5), a mounting plate (14) fixedly connected in the mounting bracket (13), a second spring (15) fixedly connected to one side wall of the mounting plate (14) close to the filter cartridge (1), and a self-sealing valve plate (16) fixedly connected to one end of the second spring (15) away from the mounting plate (14) and abutting against the annular baffle (12).

3. An oil absorption filter according to claim 2, wherein: One end of the filter cartridge (1) away from the oil inlet (5) is fixedly connected with a first annular sealing ring (17) for improving the sealing performance between the filter cover (4) and the filter cartridge (1).

4. An oil absorption filter according to claim 3, characterized in that: One end of the filter element (2) away from the first spring (8) is fixedly connected with a second annular sealing ring (18) for improving the sealing performance between the filter element (2) and the annular baffle (12) and the self-sealing push plate (11).

5. An oil absorption filter according to claim 4, characterized in that: One side wall of the self-sealing valve plate (16) close to the annular baffle (12) is fixedly connected with a third annular sealing ring (19) for improving the sealing performance between the self-sealing valve plate (16) and the annular baffle (12).

6. An oil absorption filter according to claim 5, characterized in that: The second spring (15) is provided with a positioning rod (20), one end of the positioning rod (20) is fixedly connected to the self-sealing valve plate (16), and the other end of the positioning rod (20) penetrates through the mounting plate (14).

7. An oil absorption filter according to claim 6, characterized in that: One end of the strong magnet (9) close to the jacking rod (6) is provided with a insertion hole (21), and one end of the jacking rod (6) close to the strong magnet (9) is fixedly connected with an insertion rod (22) matched with the insertion hole (21).

8. An oil absorption filter according to claim 7, characterized in that: One end of the filter cartridge (1) away from the oil inlet (5) is sleeved with an adsorption sponge (23).

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