Multi-layer high efficiency filter

Abstract

The present invention provides a multi-layer high-efficiency filter, which relates to the technical field of fuel filters. The multi-layer high-efficiency filter comprises a shell, the top of which is threadedly connected to an upper cover assembly, the bottom of which is fixedly connected to a first filter element, a second filter element and a third filter element, and arranged in sequence from the outside to the inside; a partition is fixedly connected to the inner wall of the shell, the bottom of the shell is fixedly connected to a motor, and a cross plate is fixedly connected to the output shaft of the motor. By arranging a motor, a cross plate, a support rod, a turntable, a vertical plate, a first telescopic rod, a card plate, a second spring, a card hole, a card block, a scraper, a storage chamber, an inlet, a baffle, a filter hole, a second telescopic rod, a top plate, a connecting seat, a roller and a third spring, it is convenient to scrape impurities attached to the first filter element, the second filter element and the third filter element, and the scraped impurities are stored in the storage chamber to avoid secondary blockage caused by impurities, thereby ensuring the normal flow of fuel.

Description

Technical Field

[0001] The invention relates to the technical field of fuel filters, in particular to a multi-layer high-efficiency filter. Background Art

[0002] The fuel filter is located in the engine lubrication system. Its function is to filter out harmful impurities in the fuel from the oil pan and supply clean fuel to the crankshaft, connecting rod, camshaft, supercharger, piston ring and other moving parts to play a role in lubrication, cooling and cleaning, thereby extending the life of these parts.

[0003] During the use of the existing filter, in order to improve the cleanliness of the fuel, a multi-layer material is used for filtering. However, as the use time of the filter increases, a lot of impurities will be adsorbed on the filtering structure of the multi-layer material, which is easy to affect the flow rate of the fuel. In order to solve this problem, in the prior art, the application number is "CN201510474275.3", and the name is "A kind of anti-blocking gasoline filter". This patent controls the rotation of the scraper through a driving device, and removes impurities on the filter element to avoid clogging of the filter element. However, the impurities after scraping are still present inside the shell, and the filter element is still blocked. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a multi-layer high-efficiency filter, which solves the problem that the filter element of the prior filter is easily blocked during use.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-layer high-efficiency filter, comprising a housing, the top of the housing is threadedly connected to an upper cover assembly, the bottom of the upper cover assembly is fixedly connected to a first filter element, a second filter element and a third filter element, and are arranged in sequence from the outside to the inside;

[0008] A partition is fixedly connected to the inner wall of the shell, a motor is fixedly connected to the bottom of the shell, a transverse plate is fixedly connected to the output shaft of the motor, and the transverse plate is located above the partition, a support rod is fixedly connected to the top of the transverse plate, a rotating disk is fixedly connected to the top of the support rod, and a plurality of scraping components are fixedly connected to the top of the rotating disk;

[0009] The first slot, the second slot and the third slot are arranged inside the turntable, and are arranged in sequence from the outside to the inside. The bottoms of the first slot, the second slot and the third slot are fixedly connected to the third telescopic rod, the top of the third telescopic rod is fixedly connected to the sealing ring, and the first spring is sleeved on the third telescopic rod. A bypass valve assembly, a first telescopic rod, a clamping plate, a second spring, a clamping hole, a clamping block, a scraper, a storage chamber, an inlet, a baffle, a filter hole, a second telescopic rod, a top plate, a connecting seat, a roller and a third spring are arranged in the middle position of the top of the turntable. The vertical plate is fixedly connected to the top of the turntable, the first telescopic rod is fixedly connected to the side wall of the vertical plate, and the clamping plate is fixedly connected to the first telescopic rod The other end of the second spring is sleeved on the first telescopic rod, the clamping hole is arranged inside the clamping plate, the clamping block is slidably connected to the inside of the clamping hole, the scraper is fixedly connected to the side of the clamping block away from the vertical plate, the storage cavity is arranged inside the scraper, the entrance is arranged on the front side wall of the scraper, the baffle is rotatably connected to the inside of the storage cavity through a rotating shaft, the filter hole is arranged on the rear side wall of the scraper, the second telescopic rod is fixedly connected to the rear side wall of the storage cavity, the top plate is fixedly connected to the other end of the second telescopic rod, the connecting seat is fixedly connected to the side of the top plate away from the second telescopic rod, the roller is rotatably connected to the inside of the connecting seat, and the third spring is sleeved on the second telescopic rod.

[0010] Preferably, the upper cover assembly includes a top cover, an oil guide chamber, an oil outlet pipe, an oil inlet pipe, a through hole and a sealing ring, the top cover is threadedly connected to the outer shell, the oil guide chamber is arranged inside the top cover, the oil outlet pipe is fixedly connected to the middle position of the top cover, the oil inlet pipe is fixedly connected to the top of the top cover, and the oil inlet pipe is located on the right side of the oil outlet pipe, the through hole is arranged at the bottom edge position of the oil guide chamber, and the sealing ring is arranged at the connection between the top cover and the outer shell.

[0011] Preferably, there are a plurality of through holes, and the through holes are located on the outside of the first filter element, and the oil outlet pipe is located on the inside of the third filter element.

[0012] Preferably, a check valve assembly is provided inside the oil guide chamber, and the check valve assembly includes a second column, a second sealing plate, a second sealing block and a fifth spring. The second columns are provided in two numbers and are fixedly connected between the top and the bottom of the oil guide chamber. The second sealing plate is slidably connected to the two second columns. The second sealing block is fixedly connected to the top of the second sealing plate, and the second sealing block is located below the oil inlet pipe. The fifth spring is provided in two numbers and is sleeved on the second column.

[0013] Preferably, the bypass valve assembly includes an oil inlet hole, a first column, a fixed plate, a first blocking plate, a first blocking block and a fourth spring. The oil inlet hole is arranged in the middle position of the turntable. The first column is fixedly connected to the top of the turntable. There are two first columns, which are symmetrically arranged on the left and right sides of the oil inlet hole. The fixed plate is fixedly connected to the top of the two first columns. The first blocking plate is slidably connected to the two first columns. The first blocking block is fixedly connected to the bottom of the first blocking plate, and the first blocking block is used in conjunction with the oil inlet hole. There are two fourth springs, and the fourth spring is sleeved on the first column.

[0014] Preferably, the first filter element includes a first positioning net and a first filter cloth, and the first filter cloth is arranged on the outer side wall of the first positioning net; the second filter element includes a second positioning net and a second filter cloth, and the second filter cloth is arranged on the outer side of the second positioning net; the third filter element includes a third positioning net and a third filter cloth, and the third filter cloth is arranged on the outer side wall of the third positioning net.

[0015] Preferably, the first filter element is arranged corresponding to the first slot, the second filter element is arranged corresponding to the second slot, and the third filter element is arranged corresponding to the third slot.

[0016] Preferably, the plurality of scraping assemblies are respectively attached to the outer sides of the first filter element, the second filter element and the third filter element.

[0017] (III) Beneficial effects

[0018] The present invention provides a multi-layer high-efficiency filter. It has the following beneficial effects:

[0019] 1. The present invention, by arranging a motor, a horizontal plate, a support rod, a turntable, a vertical plate, a first telescopic rod, a clamping plate, a second spring, a clamping hole, a clamping block, a scraper, a storage chamber, an inlet, a baffle, a filter hole, a second telescopic rod, a top plate, a connecting seat, a roller and a third spring, is convenient for scraping impurities attached to the first filter element, the second filter element and the third filter element, and the scraped impurities are stored in the storage chamber, so as to avoid secondary blockage caused by the impurities and ensure the normal flow of fuel.

[0020] 2. The present invention, by providing a first telescopic rod, a clamping plate, a second spring, a clamping hole and a clamping block, facilitates controlling the scraper to fit respectively with the first filter element, the second filter element and the third filter element, so that impurities can be cleaned more thoroughly. In addition, a split structure design is adopted between the first filter element, the second filter element, the third filter element and the turntable, so that the first filter element, the second filter element and the third filter element can be replaced separately. In addition, the scraper can also be disassembled, cleaned, and reused.

[0021] 3. The present invention provides a first card slot, a second card slot, and a third card slot, and the first card slot, the second card slot, and the third card slot are each provided with a third telescopic rod, a first spring, and a sealing ring, so as to improve the sealing between the first filter element, the second filter element, the third filter element and the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the external structure of the multi-layer high-efficiency filter proposed by the present invention;

[0023] Figure 2 A schematic diagram of the internal structure of the housing of the multi-layer high-efficiency filter proposed by the present invention;

[0024] Figure 3 A partial structural cross-sectional view of the multi-layer high-efficiency filter proposed by the present invention;

[0025] Figure 4 A front cross-sectional view of a rotating disk of a multi-layer high-efficiency filter proposed by the present invention;

[0026] Figure 5 for Figure 3 Schematic diagram of the structure of A;

[0027] Figure 6 A top cross-sectional view of the scraper and its connection structure of the multi-layer high-efficiency filter proposed by the present invention;

[0028] Figure 7 This is a front cross-sectional view of a first filter element of the multi-layer high-efficiency filter proposed by the present invention;

[0029] Figure 8 A top view of the first filter element of the multi-layer high-efficiency filter proposed by the present invention;

[0030] Fig. 9 This is a front cross-sectional view of the second filter element of the multi-layer high-efficiency filter proposed by the present invention;

[0031] Fig.10 This is a front cross-sectional view of a third filter element of the multi-layer high-efficiency filter proposed by the present invention;

[0032] Fig.11 This is a front cross-sectional view of the upper cover assembly of the multi-layer high-efficiency filter proposed by the present invention;

[0033] Fig.12 This is a top sectional view of the upper cover assembly of the multi-layer high-efficiency filter proposed by the present invention.

[0034] Among them, 1. shell; 2. upper cover assembly; 3. first filter element; 4. second filter element; 5. third filter element; 6. motor; 7. partition; 8. horizontal plate; 9. support rod; 10. turntable; 11. first card slot; 12. second card slot; 13. third card slot; 14. first spring; 15. sealing ring; 16. vertical plate; 17. first telescopic rod; 18. card plate; 19. second spring; 20. card hole; 21. card block; 22. scraper; 23. inlet; 24. baffle; 25. filter hole; 26. second telescopic rod; 27. top plate; 28. connecting seat; 29. ​​roller; 30. third spring; 31. bypass valve assembly; 32. check valve assembly; 33. third telescopic rod;

[0035] 201, top cover; 202, oil guide cavity; 203, oil outlet pipe; 204, oil inlet pipe; 205, through hole; 206, sealing ring;

[0036] 301, first positioning net; 302, first filter cloth;

[0037] 401, second positioning net; 402, second filter cloth;

[0038] 501, a third positioning net; 502, a third filter cloth;

[0039] 311, oil inlet hole; 312, first column; 313, fixing plate; 314, first blocking plate; 315, first blocking block; 316, fourth spring;

[0040] 321. Second column; 322. Second blocking plate; 323. Second blocking block; 324. Fifth spring. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0042] like Figure 1-12 As shown, the embodiment of the present invention provides a multi-layer high-efficiency filter, including a housing 1, the top of the housing 1 is threadedly connected to an upper cover assembly 2, the bottom of the upper cover assembly 2 is fixedly connected to a first filter element 3, a second filter element 4 and a third filter element 5, and are arranged in sequence from the outside to the inside, the first filter element 3, the second filter element 4 and the third filter element 5 are mainly used to filter fuel, and the fuel must first pass through the first filter element 3 for primary filtration, then pass through the second filter element 4 for secondary filtration, and finally pass through the third filter element 5 for tertiary filtration;

[0043] A partition 7 is fixedly connected to the inner wall of the shell 1. The main function of the partition 7 is to block and prevent the fuel from entering the inside of the motor 6. The bottom of the shell 1 is fixedly connected to the motor 6. The motor 6 is mainly used to control the rotation of the turntable 10, thereby driving a plurality of scraping components to rotate, so that the scraping components clean the impurities filtered out from the first filter element 3, the second filter element 4, and the third filter element 5, and collect the cleaned impurities. A cross plate 8 is fixedly connected to the output shaft of the motor 6, and the cross plate 8 is located above the partition 7. A support rod 9 is fixedly connected to the top of the cross plate 8. The cross plate 8 and the support rod 9 are connecting parts, which facilitate the motor 6 to control the rotation of the turntable 10. The top of the support rod 9 is fixedly connected to the turntable 10. A plurality of scraping components are fixedly connected to the top of the turntable 10, and the plurality of scraping components are respectively attached to the outer sides of the first filter element 3, the second filter element 4, and the third filter element 5;

[0044] A first slot 11, a second slot 12 and a third slot 13 are provided inside the turntable 10, and are arranged in sequence from the outside to the inside. The bottoms of the first slot 11, the second slot 12 and the third slot 13 are fixedly connected with a third telescopic rod 33, the top of the third telescopic rod 33 is fixedly connected with a sealing ring 15, and a first spring 14 is sleeved on the third telescopic rod 33. The arrangement of the third telescopic rod 33, the sealing ring 15 and the first spring 14 is convenient for improving the sealing between the first filter element 3, the second filter element 4, the third filter element 5 and the turntable 10. In addition, the arrangement of the first slot 11, the second slot 12 and the third slot 13 is convenient for separate disassembly and replacement of the first filter element 3, the second filter element 4 and the third filter element 5. A bypass valve assembly 31 is provided at the middle position of the top of the turntable 10.

[0045] The scraping assembly includes a vertical plate 16, a first telescopic rod 17, a card plate 18, a second spring 19, a card hole 20, a card block 21, a scraper 22, a storage chamber, an inlet 23, a baffle 24, a filter hole 25, a second telescopic rod 26, a top plate 27, a connecting seat 28, a roller 29 and a third spring 30, wherein the vertical plate 16 and the first telescopic rod 17 mainly play a positioning role, and the scraper 22 is installed at a specified position. The second spring 19 is always in a compressed state, and the elastic force of the second spring 19 is used to squeeze the scraper 22 so that the scraper 22 fits the filter element. The card hole 20 and the card block 21 are set to facilitate the disassembly of the scraper 22, thereby cleaning the internal The collected impurities are cleaned up. The front end of the scraper 22 is conical, which is convenient for scraping impurities. The storage chamber is mainly used for collecting impurities. When the turntable 10 is rotating, the scraped impurities will enter the storage chamber from the inlet 23 along with the fuel. The fuel is discharged from the filter hole 25, and the impurities remain in the storage chamber. The third spring 30 mainly squeezes the top plate 27, thereby controlling the movement of the connecting seat 28 and the roller 29, and resists the baffle 24, so that the baffle 24 blocks the inlet 23 to prevent the collected impurities from being discharged from the inlet 23. When the turntable 10 is rotating, the baffle 24 can automatically open under the action of the fuel.

[0046] The vertical plate 16 is fixedly connected to the top of the turntable 10, the first telescopic rod 17 is fixedly connected to the side wall of the vertical plate 16, the card plate 18 is fixedly connected to the other end of the first telescopic rod 17, the second spring 19 is sleeved on the first telescopic rod 17, each vertical plate 16 is provided with two first telescopic rods 17 and two second springs 19, the card hole 20 is arranged inside the card plate 18, the card block 21 is slidably connected inside the card hole 20, the scraper 22 is fixedly connected to the side of the card block 21 away from the vertical plate 16, the side of the scraper 22 away from the card block 21 is an arc surface, the storage cavity is arranged inside the scraper 22, and the entrance 23 is arranged On the front side wall of the scraper 22, the baffle 24 is rotatably connected to the inside of the storage chamber through a rotating shaft, the filter hole 25 is arranged on the rear side wall of the scraper 22, the second telescopic rod 26 is fixedly connected to the rear side wall of the storage chamber, the top plate 27 is fixedly connected to the other end of the second telescopic rod 26, the connecting seat 28 is fixedly connected to the side of the top plate 27 away from the second telescopic rod 26, the roller 29 is rotatably connected to the inside of the connecting seat 28, the third spring 30 is sleeved on the second telescopic rod 26, the number of through holes 205 is set in plurality, and the through holes 205 are located on the outside of the first filter element 3, and the oil outlet pipe 203 is located on the inside of the third filter element 5.

[0047] The upper cover assembly 2 includes a top cover 201, an oil guide chamber 202, an oil outlet pipe 203, an oil inlet pipe 204, a through hole 205 and a sealing ring 206. The through hole 205 is arranged to facilitate the entry of the fuel into the outer side of the first filter element 3. The top cover 201 is threadedly connected to the outer shell 1, the oil guide chamber 202 is arranged inside the top cover 201, the oil outlet pipe 203 is fixedly connected to the middle position of the top cover 201, the oil inlet pipe 204 is fixedly connected to the top of the top cover 201, and the oil inlet pipe 204 is located on the right side of the oil outlet pipe 203, the through hole 205 is arranged at the bottom edge of the oil guide chamber 202, and the sealing ring 206 is arranged at the connection between the top cover 201 and the outer shell 1.

[0048] A check valve assembly 32 is disposed inside the oil guide chamber 202. The check valve assembly 32 is disposed to prevent the oil guide chamber 202 from backflowing when the engine stops working. The check valve assembly 32 includes a second column 321, a second blocking plate 322, a second blocking block 323 and a fifth spring 324. The fifth spring 324 is always in a compressed state. When the engine stops working, the fifth spring 324 moves the second blocking plate 322 and the second blocking block 323 upward, and the second blocking block 323 blocks the oil inlet pipe 204.

[0049] There are two second columns 321, which are fixedly connected between the top and the bottom of the oil guide chamber 202. The second blocking plate 322 is slidably connected to the two second columns 321. The second blocking block 323 is fixedly connected to the top of the second blocking plate 322, and the second blocking block 323 is located below the oil inlet pipe 204. There are two fifth springs 324, which are sleeved on the second column 321.

[0050] The bypass valve assembly 31 includes an oil inlet hole 311, a first column 312, a fixing plate 313, a first blocking plate 314, a first blocking block 315 and a fourth spring 316. When the fuel cannot pass through the first filter element 3, the fuel will enter the interior of the third filter element 5 from the oil inlet hole 311, and will squeeze the first blocking plate 314 and the first blocking block 315, so that the fourth spring 316 is compressed;

[0051] The oil inlet hole 311 is set in the middle position of the turntable 10, the first column 312 is fixedly connected to the top of the turntable 10, the number of the first columns 312 is two, and they are symmetrically arranged on the left and right sides of the oil inlet hole 311, the fixing plate 313 is fixedly connected to the top of the two first columns 312, the first blocking plate 314 is slidably connected to the two first columns 312, the first blocking block 315 is fixedly connected to the bottom of the first blocking plate 314, and the first blocking block 315 is used in conjunction with the oil inlet hole 311, the number of the fourth spring 316 is two, and the fourth spring 316 is sleeved on the first column 312.

[0052] The first filter element 3 includes a first positioning net 301 and a first filter cloth 302, and the first filter cloth 302 is arranged on the outer side wall of the first positioning net 301. The second filter element 4 includes a second positioning net 401 and a second filter cloth 402, and the second filter cloth 402 is arranged on the outer side of the second positioning net 401. The third filter element 5 includes a third positioning net 501 and a third filter cloth 502, and the third filter cloth 502 is arranged on the outer side wall of the third positioning net 501. The first filter element 3 is arranged corresponding to the first card slot 11, the second filter element 4 is arranged corresponding to the second card slot 12, and the third filter element 5 is arranged corresponding to the third card slot 13.

[0053] Working principle: When the engine is working, the fuel first enters from the oil inlet pipe 204. At this time, the second blocking plate 322 and the second blocking block 323 are squeezed and begin to slide downward. The fuel enters the interior of the oil guide cavity 202 and then enters the outside of the first filter element 3 through the through hole 205. Then the fuel passes through the first filter element 3, the second filter element 4, and the third filter element 5 in turn and is filtered. The filtered fuel is discharged from the oil outlet pipe 203. During the filtering process of the fuel, the motor 6 controls the turntable 10 to rotate, thereby driving the scraper 22 to rotate and scrape the impurities. The scraped impurities are discharged along with the fuel. When the scraper 22 enters the storage chamber, the second spring 19 squeezes the scraper 22 during the rotation, so that the scraper 22 fits the filter element; when the engine stops working, the motor 6 stops working, and the third spring 30 squeezes the top plate 27, thereby controlling the movement of the connecting seat 28 and the roller 29, and resists the baffle 24, so that the baffle 24 blocks the inlet 23 to prevent the collected impurities from being discharged from the inlet 23. In addition, the fifth spring 324 moves the second blocking plate 322 and the second blocking block 323 upward, and the second blocking block 323 blocks the oil inlet pipe 204 to prevent the fuel from flowing back.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-layer high-efficiency filter, comprising a housing (1), characterized in that: The top of the housing (1) is threadedly connected to an upper cover assembly (2), and the bottom of the upper cover assembly (2) is fixedly connected to a first filter element (3), a second filter element (4) and a third filter element (5), which are arranged in sequence from the outside to the inside; A partition plate (7) is fixedly connected to the inner wall of the shell (1), a motor (6) is fixedly connected to the bottom of the shell (1), a transverse plate (8) is fixedly connected to the output shaft of the motor (6), and the transverse plate (8) is located above the partition plate (7), a support rod (9) is fixedly connected to the top of the transverse plate (8), a rotating disk (10) is fixedly connected to the top of the supporting rod (9), and a plurality of scraping components are fixedly connected to the top of the rotating disk (10); A first card slot (11), a second card slot (12) and a third card slot (13) are arranged inside the rotating disk (10) and are arranged in sequence from the outside to the inside; the bottoms of the first card slot (11), the second card slot (12) and the third card slot (13) are all fixedly connected to a third telescopic rod (33); the top of the third telescopic rod (33) is fixedly connected to a sealing ring (15); a first spring (14) is sleeved on the third telescopic rod (33); and a bypass valve assembly (31) is arranged at the middle position of the top of the rotating disk (10); The scraping assembly comprises a vertical plate (16), a first telescopic rod (17), a clamping plate (18), a second spring (19), a clamping hole (20), a clamping block (21), a scraper (22), a storage chamber, an entrance (23), a baffle (24), a filter hole (25), a second telescopic rod (26), a top plate (27), a connecting seat (28), a roller (29) and a third spring (30), wherein the vertical plate (16) is fixedly connected to the top of the rotating disk (10), the first telescopic rod (17) is fixedly connected to the side wall of the vertical plate (16), the clamping plate (18) is fixedly connected to the other end of the first telescopic rod (17), the second spring (19) is sleeved on the first telescopic rod (17), the clamping hole (20) is arranged inside the clamping plate (18), and the clamping block (21) is slidably connected to the top of the rotating disk (10). The scraper (22) is fixedly connected to a side of the block (21) away from the vertical plate (16), the storage chamber is arranged inside the scraper (22), the inlet (23) is arranged on the front side wall of the scraper (22), the baffle (24) is rotatably connected to the inside of the storage chamber via a rotating shaft, the filter hole (25) is arranged on the rear side wall of the scraper (22), the second telescopic rod (26) is fixedly connected to the rear side wall of the storage chamber, the top plate (27) is fixedly connected to the other end of the second telescopic rod (26), the connecting seat (28) is fixedly connected to a side of the top plate (27) away from the second telescopic rod (26), the roller (29) is rotatably connected to the inside of the connecting seat (28), and the third spring (30) is sleeved on the second telescopic rod (26).

2. The multi-layer high-efficiency filter according to claim 1, characterized in that: The upper cover assembly (2) comprises a top cover (201), an oil guide chamber (202), an oil outlet pipe (203), an oil inlet pipe (204), a through hole (205) and a sealing ring (206); the top cover (201) is threadedly connected to the outer shell (1); the oil guide chamber (202) is arranged inside the top cover (201); the oil outlet pipe (203) is fixedly connected to the middle position of the top cover (201); the oil inlet pipe (204) is fixedly connected to the top of the top cover (201), and the oil inlet pipe (204) is located on the right side of the oil outlet pipe (203); the through hole (205) is arranged at the bottom edge of the oil guide chamber (202); and the sealing ring (206) is arranged at the connection between the top cover (201) and the outer shell (1).

3. The multi-layer high efficiency filter according to claim 2, characterized in that: The through holes (205) are provided in a plurality, and the through holes (205) are located outside the first filter element (3), and the oil outlet pipe (203) is located inside the third filter element (5).

4. The multi-layer high efficiency filter according to claim 2, characterized in that: A check valve assembly (32) is arranged inside the oil guide chamber (202), and the check valve assembly (32) comprises a second column (321), a second blocking plate (322), a second blocking block (323) and a fifth spring (324). The number of the second columns (321) is two and they are fixedly connected between the top and the bottom of the oil guide chamber (202). The second blocking plate (322) is slidably connected to the two second columns (321). The second blocking block (323) is fixedly connected to the top of the second blocking plate (322), and the second blocking block (323) is located below the oil inlet pipe (204). The number of the fifth spring (324) is two and the fifth spring (324) is sleeved on the second column (321).

5. The multi-layer high efficiency filter according to claim 1, characterized in that: The bypass valve assembly (31) comprises an oil inlet hole (311), a first column (312), a fixing plate (313), a first blocking plate (314), a first blocking block (315) and a fourth spring (316); the oil inlet hole (311) is arranged in the middle of the rotating disk (10); the first column (312) is fixedly connected to the top of the rotating disk (10); there are two first columns (312) and they are symmetrically arranged on the left and right sides of the oil inlet hole (311). The fixing plate (313) is fixedly connected to the top of the two first columns (312), the first blocking plate (314) is slidably connected to the two first columns (312), the first blocking block (315) is fixedly connected to the bottom of the first blocking plate (314), and the first blocking block (315) is used in conjunction with the oil inlet hole (311), and the number of the fourth springs (316) is two, and the fourth springs (316) are sleeved on the first columns (312).

6. The multi-layer high efficiency filter according to claim 1, characterized in that: The first filter element (3) comprises a first positioning net (301) and a first filter cloth (302), the first filter cloth (302) being arranged on the outer side wall of the first positioning net (301), the second filter element (4) comprises a second positioning net (401) and a second filter cloth (402), the second filter cloth (402) being arranged on the outer side of the second positioning net (401), and the third filter element (5) comprises a third positioning net (501) and a third filter cloth (502), the third filter cloth (502) being arranged on the outer side wall of the third positioning net (501).

7. The multi-layer high efficiency filter according to claim 1, characterized in that: The first filter core (3) is arranged corresponding to the first slot (11), the second filter core (4) is arranged corresponding to the second slot (12), and the third filter core (5) is arranged corresponding to the third slot (13).

8. The multi-layer high efficiency filter according to claim 1, characterized in that: The plurality of scraping components are respectively fitted to the outer sides of the first filter core (3), the second filter core (4) and the third filter core (5).

Images