Hollow fiber membrane device for oil purification of compressor

Abstract

The invention belongs to the technical field of hollow fiber membrane filtration, and particularly discloses a hollow fiber membrane device for compressor oil purification, which comprises a support ring body, support frames are symmetrically arranged on the two sides of the support ring body, fixed legs are arranged on the side walls of the support frames, a ring groove is formed in the inner wall of the support ring body, and an oil passing ring body is rotatably arranged in the ring groove. A rotary transformation assembly is arranged on the support frame, a vibration type hollow fiber membrane assembly is arranged on the rotary transformation assembly, the two ends of the vibration type hollow fiber membrane assembly are fixed on the inner side wall of the oil passing ring body, a backwashing assembly is arranged at the lower part of the support ring body, and magnetic vibration assemblies are arranged on the support ring body and the vibration type hollow fiber membrane assembly. On one hand, the straightening state and the non-straightening state of the hollow fiber membrane bundle are alternated, and on the other hand, the purification of dirty oil by the hollow fiber membrane bundle and the backwashing of the hollow fiber membrane bundle are alternated, so that the purification and backwashing efficiency of the hollow fiber membrane is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of hollow fiber membrane filtration, and specifically refers to a hollow fiber membrane device for purifying the oil of a compressor. Background Art

[0002] During the daily operation of compressors and other construction machinery vehicles, the pollution control of hydraulic oil is crucial for the normal operation of the hydraulic system. Hydraulic oil contains fixed pollutants remaining from the wear of hydraulic components or after processing and assembly.

[0003] Currently, the main hydraulic oil pollution control technologies are as follows: 1. High-precision filter element filtration, which removes particulate pollutants in hydraulic oil through multi-stage filtration with various different types of filter elements. The filtration effect is good and it is easy to use, but the filter element is prone to clogging and needs to be replaced frequently; 2. Electrostatic filtration, which uses the high-voltage electrostatic adsorption ability to remove pollutants in the oil and is applicable to the purification of oil storage equipment, but the purification efficiency is low; 3. Centrifugal filtration, which has a fast purification speed, but the equipment is large, inconvenient to move, and has low precision; 4. Coalescence filtration, which can achieve a certain degree of oil-water separation through the wettability of the surface material of the coalescence filter element and has a certain removal effect on solid and water pollutants in hydraulic oil, but it is not applicable to hydraulic oil with a high content of fixed pollutants. Traditional filtration technologies have high energy consumption and low efficiency. Waste filter elements belong to hazardous waste and the treatment cost is expensive.

[0004] A hollow fiber membrane is a membrane in the shape of a fiber with a self-supporting function. The hollow fiber membrane is made of polysulfone and dimethylacetamide as raw materials into fiber filaments with a hollow inner cavity and has the characteristic of selective permeability. Therefore, the hollow fiber membrane has a very good effect on the purification of hydraulic oil. In order to improve the purification effect, the hollow fiber membranes need to be set concentratedly. When the setting density is too large, the particulate matter in the hydraulic oil may get stuck between the hollow fiber membranes and cannot sink and be removed, reducing the purification effect.

[0005] Therefore, a hollow fiber membrane device for purifying the oil of a compressor is needed to solve the above problems. Summary of the Invention

[0006] In view of the above situation, to overcome the defects of the prior art, the present invention provides a hollow fiber membrane device for purifying the oil of a compressor. A sliding cylinder is sleeved on the purification cylinder. On the one hand, it realizes the alternation of the straightened and non-straightened states of the hollow fiber membrane bundle. On the other hand, it alternately realizes the purification of the dirty oil by the hollow fiber membrane bundle and the backwashing of the hollow fiber membrane bundle, improving the purification and backwashing efficiency of the hollow fiber membrane. At the same time, it solves the technical problem that when the density of the hollow fiber membrane is too large, the particulate matter in the hydraulic oil gets stuck between the hollow fiber membranes and cannot sink and be removed.

[0007] The technical solution adopted by the present invention is as follows: The present invention provides a hollow fiber membrane device for purifying compressor oil, including a support ring body. On both sides of the support ring body, support frames are symmetrically arranged. On the side wall of the support frame, fixed legs are provided. On the inner wall of the support ring body, an annular groove is provided. In the annular groove, an oil-passing ring body is rotatably arranged. On the support frame, a rotation conversion component is provided. On the rotation conversion component, a vibrating hollow fiber membrane component is provided. The two ends of the vibrating hollow fiber membrane component are fixed on the inner side wall of the oil-passing ring body. At the lower part of the support ring body, a backwashing component is provided. On the support ring body and the vibrating hollow fiber membrane component, a magnetic vibration component is provided.

[0008] Further, the rotation conversion component includes a fixed hoop, a rotating shaft and a driving motor. The two sides of the fixed hoop are rotatably arranged on the inner side wall of the support frame through the rotating shaft. One of the rotating shafts penetrates through the side wall of the support frame. The driving motor is arranged on the fixed leg, and the driving motor is connected to the rotating shaft.

[0009] Further, the vibrating hollow fiber membrane component includes a purification cylinder, a fixed ring, a compression spring, a sliding cylinder, a hollow fiber membrane bundle, a movable end cover, a fixed end cover, a support tube, a sleeve, a fixed tube, a support block and a fixed block. The purification cylinder is fixedly arranged in the fixed hoop. The fixed end cover is arranged at the lower end of the purification cylinder. The fixed ring is fixedly sleeved on the upper part of the outer wall of the purification cylinder. The sliding cylinder is slidably sleeved on the upper end of the purification cylinder. The movable end cover is arranged at the end of the sliding cylinder. The compression spring is sleeved on the outer wall of the purification cylinder. The two ends of the compression spring are respectively arranged on the fixed ring and the sliding cylinder. The support block is arranged on the inner wall at the connection of the purification cylinder and the fixed end cover. The fixed block is arranged on the inner wall at the connection of the sliding cylinder and the movable end cover. The hollow fiber membrane bundle is arranged in an array between the support block and the fixed part. One end of the hollow fiber membrane bundle is arranged in the fixed block, and the other end of the hollow fiber membrane bundle penetrates through the support block. The upper end of the fixed tube is arranged on the fixed end cover, and the lower end of the fixed tube is arranged on the oil-passing ring body. The lower end of the support tube penetrates through the fixed block and the fixed end cover. The sleeve is slidably sleeved on the upper end of the support tube, and the upper end of the sleeve is arranged on the inner wall of the oil-passing ring body.

[0010] Further, on the outer wall of the oil-passing ring body, a first through hole and a second through hole are provided. The first through hole is aligned with the sleeve, and the second through hole is aligned with the fixed tube. Starting from the fixed tube on the outer wall of the oil-passing ring body in the clockwise direction, an oil-passing groove is provided. The radian of the oil-passing groove is smaller than the radian between the moving poles of the fixed tube.

[0011] Further, the magnetic vibration component includes a support column. The support column is arranged on the outer wall of the movable end cover. On the support column, a first magnetic block is provided. On the inner side wall of the support ring body between the two moving poles of the sleeve, a second magnetic block is arranged in an array. The magnetic properties of the first magnetic block and the second magnetic block are the same.

[0012] Further, a lower oil pipe is provided at the lower part of the outer wall of the support ring body, and the lower oil pipe is aligned with one moving pole of the fixed pipe.

[0013] Further, an oil drain pipe is provided at the upper part of the outer wall of the support ring body, and the oil drain pipe is communicated with the annular groove.

[0014] Further, a slag removal pipe is provided on the outer wall at the connection between the purification cylinder and the fixed end cover.

[0015] Further, the backwashing assembly includes an oil tank, an oil pump, an oil suction pipe and an oil outlet pipe. The oil tank is arranged between the lower parts of the fixed legs. The oil pump is arranged on the outer side wall of the oil tank. The oil tank and the oil pump are connected by the oil suction pipe. The oil pump and the support ring body are connected by the oil outlet pipe. The oil outlet pipe is communicated with the annular groove. The connection of the oil outlet pipe on the support ring body is aligned with the other moving pole of the fixed pipe.

[0016] The beneficial effects achieved by the present invention with the above structure are as follows: 1. In the initial state, the first through hole on the oil-passing ring body is aligned with the oil drain pipe, and the lower oil pipe is aligned with the second through hole. The waste oil enters the casing and the support pipe through the first through hole, and then enters the space composed of the purification cylinder, the fixed block, the sliding cylinder and the support block. Under the action of oil pressure, the purified oil enters the hollow fiber membrane bundle, while the solid impurities are blocked outside the hollow fiber membrane bundle. The purified oil entering the hollow fiber membrane bundle enters between the fixed end cover and the support block, and then flows into the oil tank through the fixed pipe, the second through hole and the lower oil pipe; 2. When the purification cylinder rotates clockwise, the first through hole is staggered from the oil drain pipe, and the waste oil cannot enter the casing. The second through hole is staggered from the lower oil pipe. At the same time, the second through hole enters the stage of being communicated with the oil-passing groove. The oil pump transports the purified oil between the fixed end cover and the support block. Under the action of oil pressure, it enters the hollow fiber membrane bundle, so as to backwash the hollow fiber membrane bundle; 3. During the clockwise and counterclockwise rotation of the rotating shaft, when the first magnetic block is aligned with the second magnetic block, the first magnetic block moves towards the fixed hoop. The first magnetic block drives the movable end cover, the sliding cylinder and the fixed block to move. The fixed block drives the upper end of the hollow fiber membrane bundle to move. At this time, the hollow fiber membrane bundle is in a non-straightened state. When the first magnetic block is staggered from the second magnetic block, the compression spring bounces the sliding cylinder and the movable end cover upward. The fixed block moves upward along the axis, and the fixed block straightens the hollow fiber membrane bundle, so as to realize that the hollow fiber membrane bundle is alternately in a non-straightened state and a straightened state, so that the solid impurities stuck between the hollow fiber membrane bundles sink to the slag removal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of a hollow fiber membrane device for purifying compressor oil proposed by the present invention; Figure 2 isFigure 1 Left view; Figure 3 Schematic diagram of the positional relationship among the support ring body, support frame, and rotation conversion component; Figure 4 is Figure 3 Top view of Figure 5 Schematic three-dimensional structure diagram of the oil-passing ring body and the vibrating hollow fiber membrane module; Figure 6 Cross-sectional view of the oil-passing ring body and the vibrating hollow fiber membrane module; Figure 7 is Figure 6 Enlarged view of part A in Figure 8 is Figure 6 Enlarged view of part B in

[0018] Among them, 1. Support ring body, 2. Support frame, 3. Fixed leg, 4. Ring groove, 5. Oil-passing ring body, 6. Rotation conversion component, 7. Vibrating hollow fiber membrane module, 8. Backwashing component, 9. Magnetic vibration component, 10. Fixed hoop, 11. Rotating shaft, 12. Driving motor, 13. Purification cylinder, 14. Fixed ring, 15. Compression spring, 16. Sliding cylinder, 17. Hollow fiber membrane bundle, 18. Movable end cover, 19. Fixed end cover, 20. Support tube, 21. Sleeve, 22. Fixed tube, 23. Support block, 24. Fixed block, 25. First through hole, 26. Oil-passing groove, 27. Support column, 28. First magnetic block, 29. Second magnetic block, 30. Lower oil pipe, 31. Dirty oil pipe, 32. Slag removal pipe, 33. Oil tank, 34. Oil pump, 35. Suction oil pipe, 36. Outlet oil pipe, 37. Second through hole.

[0019] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0022] As Figure 1 shown, the present invention provides a hollow fiber membrane device for purifying the oil liquid of compressor oil, including a support ring body 1. On both sides of the support ring body 1, support frames 2 are symmetrically arranged. On the side wall of the support frame 2, fixed legs 3 are provided. On the inner wall of the support ring body 1, a ring groove 4 is provided. In the ring groove 4, an oil-passing ring body 5 is rotatably arranged. On the support frame 2, a rotation conversion assembly 6 is provided. On the rotation conversion assembly 6, a vibration type hollow fiber membrane assembly 7 is provided. Both ends of the vibration type hollow fiber membrane assembly 7 are fixed on the inner side wall of the oil-passing ring body 5. At the lower part of the support ring body 1, a backwashing assembly 8 is provided. On the support ring body 1 and the vibration type hollow fiber membrane assembly 7, a magnetic vibration assembly 9 is provided.

[0023] As Figure 1 、 Figure 3 、 Figure 4 shown, the rotation conversion assembly 6 includes a fixed hoop 10, a rotating shaft 11, and a driving motor 12. Both sides of the fixed hoop 10 are rotatably arranged on the inner side wall of the support frame 2 through the rotating shaft 11. One of the rotating shafts 11 penetrates through the side wall of the support frame 2. The driving motor 12 is arranged on the fixed leg 3, and the driving motor 12 is connected to the rotating shaft 11.

[0024] As Figure 1 、 Figure 3 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8As shown in the figure, the vibrating hollow fiber membrane module 7 includes a purification cylinder 13, a fixing ring 14, a compression spring 15, a sliding cylinder 16, a hollow fiber membrane bundle 17, a movable end cap 18, a fixed end cap 19, a support tube 20, a sleeve 21, a fixed tube 22, a support block 23 and a fixing block 24. The purification cylinder 13 is fixedly arranged in the fixing hoop 10. The fixed end cap 19 is arranged at the lower end of the purification cylinder 13. The fixing ring 14 is fixedly sleeved on the upper part of the outer wall of the purification cylinder 13. The sliding cylinder 16 is slidably sleeved on the upper end of the purification cylinder 13. The movable end cap 18 is arranged at the end of the sliding cylinder 16. The compression spring 15 is sleeved on the outer wall of the purification cylinder 13. The two ends of the compression spring 15 are respectively arranged on the fixing ring 14 and the sliding cylinder 16. The support block 23 is arranged on the inner wall at the connection of the purification cylinder 13 and the fixed end cap 19. The fixing block 24 is arranged on the inner wall at the connection of the sliding cylinder 16 and the movable end cap 18. The hollow fiber membrane bundle 17 is arranged in an array between the support block 23 and the fixing part. One end of the hollow fiber membrane bundle 17 is arranged in the fixing block 24, and the other end of the hollow fiber membrane bundle 17 penetrates through the support block 23. The upper end of the fixed tube 22 is arranged on the fixed end cap 19, and the lower end of the fixed tube 22 is arranged on the oil-passing ring body 5. The lower end of the support tube 20 penetrates through the fixing block 24 and the fixed end cap 19. The sleeve 21 is slidably sleeved on the upper end of the support tube 20, and the upper end of the sleeve 21 is arranged on the inner wall of the oil-passing ring body 5.

[0025] As Figure 5 , Figure 6 , Figure 7 , Figure 8 As shown in the figure, the outer wall of the oil-passing ring body 5 is provided with a first through hole 25 and a second through hole 37. The first through hole 25 is aligned with the sleeve 21, and the second through hole 37 is aligned with the fixed tube 22. The outer wall of the oil-passing ring body 5 is provided with an oil-passing groove 26 starting from the fixed tube 22 in the clockwise direction. The radian of the oil-passing groove 26 is smaller than the radian between the moving poles of the fixed tube 22. The oil-passing groove 26 is not communicated with the second through hole 37. When the second through hole 37 is aligned with the lower oil pipe 30, the oil outlet pipe 36 is not communicated with the oil-passing groove 26.

[0026] As Figure 1 , Figure 2 , Figure 5 As shown in the figure, the magnetic vibration assembly 9 includes a support column 27. The support column 27 is arranged on the outer wall of the movable end cap 18. A first magnetic block 28 is arranged on the support column 27. The inner side wall of the support ring body 1 between the two moving poles of the sleeve 21 is provided with a second magnetic block 29 in an array. The first magnetic block 28 and the second magnetic block 29 have the same magnetic property.

[0027] As Figure 1 , Figure 3 , Figure 5As shown, a lower oil pipe 30 is provided at the lower part of the outer wall of the support ring body 1, and the lower oil pipe 30 is aligned with a moving pole of the fixed pipe 22.

[0028] As Figure 1 , Figure 2 , Figure 3 As shown, an oil drain pipe 31 is provided at the upper part of the outer wall of the support ring body 1, and the oil drain pipe 31 communicates with the annular groove 4.

[0029] As Figure 1 , Figure 2 , Figure 5 As shown, a slag removal pipe 32 is provided on the outer wall at the connection of the purification cylinder 13 and the fixed end cover 19, and a switch is provided on the slag removal pipe 32.

[0030] As Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the backwashing assembly 8 includes an oil tank 33, an oil pump 34, an oil suction pipe 35 and an oil outlet pipe 36. The oil tank 33 is arranged between the lower parts of the fixed legs 3. The oil pump 34 is arranged on the outer side wall of the oil tank 33. The oil tank 33 and the oil pump 34 are connected by the oil suction pipe 35. The oil pump 34 and the support ring body 1 are connected by the oil outlet pipe 36. The oil outlet pipe 36 communicates with the annular groove 4. The connection of the oil outlet pipe 36 on the support ring body 1 is aligned with the other moving pole of the fixed pipe 22.

[0031] During specific use, the dirty oil is introduced into the oil drain pipe 31 through a pump. In the initial state, the through hole 25 on the oil passing ring body 5 is aligned with the oil drain pipe 31, and the lower oil pipe 30 on the support ring body 1 is aligned with the through hole 37 on the oil passing ring body 5. The dirty oil enters the sleeve 21 through the through hole 25, enters the support pipe 20 through the sleeve 21, and then enters the space formed by the purification cylinder 13, the fixed block 24, the sliding cylinder 16 and the support block 23. Under the action of the oil pressure, the purified oil enters the hollow fiber membrane bundle 17, while the solid impurities are blocked outside the hollow fiber membrane bundle 17. The purified oil entering the hollow fiber membrane bundle 17 enters between the fixed end cover 19 and the support block 23, and then flows into the oil tank 33 through the fixed pipe 22, the through hole 37 and the lower oil pipe 30; After a period of purification, the transmission motor 12 is turned on, the transmission motor 12 drives the rotating shaft 11 to rotate clockwise, the rotating shaft 11 drives the fixing hoop 10 to rotate clockwise, and the fixing hoop 10 drives the purification cylinder 13 to rotate clockwise. In this process, the through hole 1 25 is staggered with the dirty oil pipe 31, and the dirty oil cannot enter the casing 21. The through hole 2 37 is staggered with the lower oil pipe 30. At the same time, the through hole 2 37 enters the stage of being connected with the oil groove 26. The oil pump 34 is turned on, and the oil pump 34 sucks the purified oil into the oil suction pipe 35, and then transports it to the oil outlet pipe 36, enters the oil groove 26 through the oil outlet pipe 36, and then enters the fixed pipe 22. The fixed tube 22 then enters between the fixed end cover 19 and the support block 23, and enters into the hollow fiber membrane bundle 17 under the action of oil pressure, thereby backwashing the hollow fiber membrane bundle 17, and the solid impurities adsorbed on the hollow fiber membrane bundle 17 enter into the purification cylinder 13 and the sliding cylinder 16. After the purification cylinder 13 rotates clockwise to the extreme position, the transmission motor 12 is reversely controlled, and the transmission motor 12 drives the rotating shaft 11 to rotate clockwise, and the rotating shaft 11 drives the fixed hoop 10 to rotate counterclockwise, and the fixed hoop 10 drives the purification cylinder 13 to rotate counterclockwise. In the above process, the switch on the slag removal pipe 32 is turned on to export the solid impurities; In the process of the transmission motor 12 driving the rotating shaft 11 to rotate clockwise and counterclockwise, the magnetic block 1 28 is intermittently aligned with the magnetic block 2 29. When the magnetic block 1 28 is aligned with the magnetic block 2 29, due to the same magnetic properties of the magnetic block 1 28 and the magnetic block 2 29, the magnetic block 1 28 moves toward the fixed hoop 10, and the magnetic block 1 28 drives the movable end cover 18 and the sliding cylinder 16 to move, thereby driving the fixed block 24 to move, and the fixed block 24 drives the upper end of the hollow fiber membrane bundle 17 to move. At this time, the hollow fiber membrane bundle 17 is in a non-straightened state. When the magnetic block 1 28 is staggered with the magnetic block 29, the compression spring 15 bounces the sliding cylinder 16 and the movable end cover 18 upward, thereby driving the fixed block 24 to move upward along the axis, and the fixed block 24 straightens the hollow fiber membrane bundle 17, thereby realizing that the hollow fiber membrane bundle 17 is alternately in a non-straightened state and a straightened state, so that the solid impurities stuck between the hollow fiber membrane bundles 17 sink to the slag removal pipe 32; When the through hole 1 25 is aligned with the dirty oil pipe 31 again, and the through hole 2 37 is aligned with the lower oil pipe 30 again, the slag removal pipe 32 and the transmission motor 12 are closed, and the above operation is repeated to achieve the purification of the dirty oil.

[0032] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

[0034] The above description of the present invention and its embodiments is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In general, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A hollow fiber membrane device for purifying compressor oil, comprising a support ring body (1), support frames (2) are symmetrically arranged on both sides of the support ring body (1), and fixed legs (3) are arranged on the side walls of the support frame (2), characterized in that: The inner wall of the support ring body (1) is provided with an annular groove (4), an oil-passing ring body (5) is rotatably provided in the annular groove (4), a rotation conversion assembly (6) is provided on the support frame (2), a vibrating hollow fiber membrane assembly (7) is provided on the rotation conversion assembly (6), both ends of the vibrating hollow fiber membrane assembly (7) are fixed to the inner wall of the oil-passing ring body (5), a backwashing assembly (8) is provided at the lower part of the support ring body (1), and a magnetic vibration assembly (9) is provided on the support ring body (1) and the vibrating hollow fiber membrane assembly (7).

2. A hollow fiber membrane device for purifying compressor oil according to claim 1, characterized in that: The rotation conversion assembly (6) comprises a fixed hoop (10), a rotating shaft (11) and a transmission motor (12); two sides of the fixed hoop (10) are rotatably arranged on the inner side wall of the support frame (2) via the rotating shaft (11); one of the rotating shafts (11) penetrates the side wall of the support frame (2); the transmission motor (12) is arranged on the fixed leg (3), and the transmission motor (12) is connected to the rotating shaft (11).

3. A hollow fiber membrane device for purifying compressor oil according to claim 2, characterized in that: The vibrating hollow fiber membrane assembly (7) comprises a purification cylinder (13), a fixing ring (14), a compression spring (15), a sliding cylinder (16), a hollow fiber membrane bundle (17), a movable end cover (18), a fixed end cover (19), a support tube (20), a sleeve (21), a fixed tube (22), a support block (23) and a fixed block (24); the purification cylinder (13) is fixed in a fixing hoop (10); the fixed end cover (19) is arranged at the lower end of the purification cylinder (13); the fixing ring (14) is fixedly sleeved on the upper part of the outer wall of the purification cylinder (13); the sliding cylinder (16) is slidably sleeved on the upper end of the purification cylinder (13); the movable end cover (18) is arranged at the end of the sliding cylinder (16); the compression spring (15) is sleeved on the outer wall of the purification cylinder (13); and the two ends of the compression spring (15) are respectively arranged on the fixing ring (14). and a sliding cylinder (16); the support block (23) is arranged on the inner wall of the connection between the purification cylinder (13) and the fixed end cover (19); the fixed block (24) is arranged on the inner wall of the connection between the sliding cylinder (16) and the movable end cover (18); the array of hollow fiber membrane bundles (17) is arranged between the support block (23) and the fixed block; one end of the hollow fiber membrane bundle (17) is arranged in the fixed block (24); the other end of the hollow fiber membrane bundle (17) is penetrated and arranged on the support block (23); the upper end of the fixed tube (22) is arranged on the fixed end cover (19); the lower end of the fixed tube (22) is arranged on the oil-passing ring body (5); the lower end of the support tube (20) penetrates the fixed block (24) and the fixed end cover (19); the sleeve (21) is slidably sleeved on the upper end of the support tube (20); the upper end of the sleeve (21) is arranged on the inner wall of the oil-passing ring body (5).

4. A hollow fiber membrane device for purifying compressor oil according to claim 3, characterized in that: The outer wall of the oil-passing ring body (5) is provided with a first through hole (25) and a second through hole (37), the first through hole (25) is aligned with the sleeve (21), the second through hole (37) is aligned with the fixed tube (22), and the outer wall of the oil-passing ring body (5) is provided with an oil-passing groove (26) in a clockwise direction starting from the fixed tube (22), the curvature of the oil-passing groove (26) being smaller than the curvature between the moving poles of the fixed tube (22).

5. A hollow fiber membrane device for purifying compressor oil according to claim 4, characterized in that: The magnetic vibration component (9) comprises a support column (27), the support column (27) being arranged on the outer wall of the movable end cover (18), a magnetic block 1 (28) being arranged on the support column (27), and a magnetic block 2 (29) being arranged on the inner wall array of the support ring body (1) between the two moving poles of the sleeve (21), the magnetic properties of the magnetic block 1 (28) and the magnetic block 2 (29) being the same.

6. A hollow fiber membrane device for purifying compressor oil according to claim 5, characterized in that: A lower oil pipe (30) is provided at the lower portion of the outer wall of the support ring body (1), and the lower oil pipe (30) is aligned with a moving pole of the fixed pipe (22).

7. A hollow fiber membrane device for purifying compressor oil according to claim 6, characterized in that: A dirty oil pipe (31) is provided on the upper portion of the outer wall of the support ring body (1), and the dirty oil pipe (31) is connected to the annular groove (4).

8. A hollow fiber membrane device for purifying compressor oil according to claim 7, characterized in that: A slag removal pipe (32) is provided on the outer wall of the connection between the purification cylinder (13) and the fixed end cover (19).

9. A hollow fiber membrane device for purifying compressor oil according to claim 8, characterized in that: The backwashing assembly (8) comprises an oil tank (33), an oil pump (34), an oil suction pipe (35) and an oil outlet pipe (36); the oil tank (33) is arranged between the lower parts of the fixed legs (3); the oil pump (34) is arranged on the outer wall of the oil tank (33); the oil tank (33) and the oil pump (34) are connected via the oil suction pipe (35); the oil pump (34) and the support ring body (1) are connected via the oil outlet pipe (36); the oil outlet pipe (36) is connected to the annular groove (4); and the connection point of the oil outlet pipe (36) on the support ring body (1) is aligned with another moving pole of the fixed pipe (22).

Images