Oil-water separation filter element of air compressor and filter

Abstract

The invention discloses an oil-water separation filter element of an air compressor and a filter, and relates to the technical field of air compressor after-treatment, the oil-water separation filter element comprises an outer shell, a filtering assembly for filtering compressed air and an anti-blocking assembly for preventing a filtering medium from being blocked, the anti-blocking assembly is arranged at the top of a partition plate, and a positioning assembly is arranged on the partition plate; through the effect of the filtering assembly, compressed gas generated by the air compressor is filtered, an oil-water mixture in the compressed gas is efficiently separated, through the effect of the air pressure assembly, nitrogen is conveyed into the spiral pipe in a flowing mode and is obliquely sprayed out through the spraying opening, and backwashing treatment is conducted on the filtering assembly; nitrogen cannot chemically react with a filter element material in the backwashing process, the filter element can be effectively protected, the service life of the filter element can be effectively prolonged, nitrogen is usually dry and extremely low in water content, the filter element can be prevented from being affected with damp due to introduction of water in the backwashing process, and then blockage of a filtering medium is avoided.

Description

Technical Field

[0001] The invention relates to the field of post-processing of air compressors, and in particular to an oil-water separation filter element and a filter of an air compressor. Background Art

[0002] When the air compressor is compressing air, the lubricating oil inside the compressor comes into contact with the air, and the compressed air will carry a certain amount of oil mist and water vapor. These oil-water mixtures will not only pollute the final compressed air, affect the normal operation of the gas-using equipment, but also pollute the environment.

[0003] The oil-water separation filter elements and filters currently on the market generally have the problem of low separation efficiency and are unable to completely remove the oil-water mixture in the compressed air, resulting in low quality of the compressed air and affecting the performance and life of the gas-using equipment. At the same time, after long-term use, the filter medium is prone to clogging. During the use of the separation filter element, it may not be convenient to use gas to backwash the filter element. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an oil-water separation filter element and filter for an air compressor to solve the problems of low oil-water separation efficiency and easy clogging in the above technical solution. An oil-water separation filter element of an air compressor, comprising an outer shell, a filter assembly for filtering compressed air, and an anti-clogging assembly for preventing clogging of a filter medium, wherein the filter assembly is arranged inside the outer shell, a partition plate is fixedly connected inside the outer shell, the anti-clogging assembly is arranged on the top of the partition plate, a positioning assembly is arranged on the partition plate, the filter assembly is detachably mounted on the partition plate through the positioning assembly, and a discharge pipe is fixedly connected to the outer shell; The anti-clogging component includes a spiral tube fixedly connected to the top of the partition plate, the spiral tube is arranged in a spiral shape, a nozzle is opened on the spiral tube, and the nozzle is arranged in an inclined shape, the bottom of the nozzle is fixedly connected to an air intake pipe, the air intake pipe is fixedly passed through the interior of the partition plate, a first solenoid valve is fixedly provided on the air intake pipe, the bottom of the air intake pipe is fixedly connected to a transmission pipe, and the transmission pipe is fixedly passed through one side of the outer shell, and a pneumatic component is provided at the end of the transmission pipe away from the outer shell.

[0005] Preferably, a reinforcement plate is fixedly connected to the top of the partition plate, and the reinforcement plate is fixedly connected to the spiral tube to increase the stability of the spiral tube in use.

[0006] Preferably, the filter assembly includes a separation filter element tightly attached to the top of the partition plate, a coalescing filter element tightly attached to the top of the partition plate, a primary filter element tightly attached to the top of the partition plate, the inner diameters of the separation filter element, the coalescing filter element and the primary filter element gradually decrease, and the top of the primary filter element is fixedly connected to an external pipe to filter the compressed air.

[0007] Preferably, the positioning assembly includes a vertical rod fixedly connected to the top of the partition plate, the top of the vertical rod is fixedly connected to a threaded rod, the top of the vertical rod is fixedly connected to a buffer pad, and the inner circumference of the buffer pad is larger than the outer circumference of the threaded rod, the outer side wall of the buffer pad is threadedly connected to a nut, and the top of the outer shell is detachably connected to a closing plate through the vertical rod, the threaded rod and the buffer pad, so as to facilitate the installation and disassembly of the filter assembly.

[0008] Preferably, a circular hole is provided on the closing plate, the outer circumference of the threaded rod is smaller than the inner circumference of the circular hole, and the inner circumference of the circular hole is smaller than the outer circumference of the buffer pad, so as to facilitate stabilizing the closing plate above the filter assembly.

[0009] Preferably, three annular airbags are fixedly connected to the bottom of the closing plate, the three annular airbags are located between the filter assembly and the closing plate, the three annular airbags are fixedly connected with connecting pipes, one of the annular airbags is fixedly connected with an inflation tube, the inflation tube is fixedly passed through the closing plate, and a second solenoid valve is fixedly provided on the inflation tube to increase the sealing between the closing plate and the filter assembly.

[0010] Preferably, the pneumatic component includes a nitrogen generator on one side of the outer shell, the gas outlet of the nitrogen generator is fixedly connected to an output pipe, one end of the output pipe is fixedly connected to a horizontal pipe, the inflation pipe is connected to the horizontal pipe, the horizontal pipe is fixedly connected to a flow guide pipe, the horizontal pipe is fixedly provided with a pressure gauge, the flow guide pipe is connected to a transmission pipe, and nitrogen is generated for backwashing the filter component.

[0011] Preferably, the bottom of the partition plate is fixedly connected to a drain pipe, a valve is fixedly provided on the drain pipe, a collecting tank is provided at the bottom of the outer shell, and the bottom of the drain pipe is located inside the collecting tank to facilitate the discharge of the filtered oil-water mixture.

[0012] Preferably, a limiting groove is provided on the top of the partition plate, and a gasket is fixedly connected to the partition plate through the limiting groove, and the gasket is located between the partition plate and the filter assembly, so that the partition plate and the filter assembly are in close contact.

[0013] An oil-water separation filter for an air compressor comprises the above-mentioned oil-water separation filter element for an air compressor.

[0014] In summary, 1. Through the action of the filter component, the compressed gas generated by the air compressor is filtered and treated, and the oil-water mixture in the compressed air is efficiently separated. Through the action of the air pressure component, the nitrogen flow is transmitted to the inside of the spiral tube and sprayed out through the nozzle at an angle to backwash the filter component. During the backwashing process, the nitrogen will not chemically react with the filter element material, which can effectively protect the filter element and extend its service life. Nitrogen is usually relatively dry and has a very low water content, which can avoid the filter element from getting damp due to the introduction of water during the backwashing process, thereby avoiding clogging of the filter medium.

[0015] 2. Through the action of the air inlet pipe, the nitrogen can be guided into the corresponding spiral tube, and then through the coordinated use of the spiral tube and the nozzle, the corresponding filter medium can be backwashed according to demand.

[0016] 3. Through the action of the closing plate, the top of the filter assembly is squeezed, limited and closed. The closing plate is fixed by the coordinated use of the vertical rod, threaded rod, buffer pad and nut. Then, through the coordinated use of the annular airbag, connecting pipe, inflation pipe and second solenoid valve, the sealing between the closing plate and the filter assembly is increased, thereby facilitating the disassembly and replacement of the filter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an oil-water separation filter element and a filter of an air compressor of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of an oil-water separation filter element and a filter of an air compressor of the present invention; Figure 3 This is a schematic diagram of an oil-water separation filter element and a filter assembly of an air compressor and related structures of the present invention; Figure 4 This is a schematic diagram of an oil-water separation filter element and a filter anti-clogging component of an air compressor and related structures of the present invention; Figure 5 The invention discloses an oil-water separation filter element and a filter for an air compressor Figure 4 The enlarged structural diagram at A in the middle; Figure 6 This is a schematic diagram of an oil-water separation filter element and a filter closing plate of an air compressor and related structures of the present invention; Figure 7 This is a schematic diagram of an oil-water separation filter element and a filter vertical rod and related structures of an air compressor of the present invention; Figure 8 The present invention is a schematic diagram of an oil-water separation filter element and a filter air pressure component of an air compressor and related structures.

[0018] Description of reference numerals: 1. Outer shell; 2. Partition plate; 3. Filter assembly; 31. Separation filter element; 32. Coalescing filter element; 33. Primary filter element; 4. Anti-clogging component; 41. Spiral tube; 42. Air inlet pipe; 43. Transmission pipe; 44. First solenoid valve; 45. Reinforcement plate; 46. Nozzle; 5. Air pressure assembly; 51. Nitrogen generator; 52. Output pipe; 53. Horizontal pipe; 54. Flow guide pipe; 55. Pressure gauge; 6. External pipe; 7. Positioning assembly; 71. Vertical rod; 72. Threaded rod; 73. Buffer pad; 74. Nut; 75. Closing plate; 76. Round hole; 77. Annular airbag; 78. Connecting pipe; 79. Inflatable pipe; 710. Second solenoid valve; 8. Drain pipe; 9. Valve; 10. Collection tank; 11. Limiting groove; 12. Gasket; 13. Discharge pipe. DETAILED DESCRIPTION

[0019] 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

[0020] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the present invention provides a technical solution: an oil-water separation filter element of an air compressor, comprising an outer shell 1, a filter assembly 3 for filtering compressed air, and an anti-clogging assembly 4 for preventing clogging of the filter medium, the filter assembly 3 and the anti-clogging assembly 4 are both located inside the outer shell 1, the filter assembly 3 is arranged inside the outer shell 1, a partition plate 2 is fixedly connected inside the outer shell 1, the partition plate 2 is located at the middle lower position inside the outer shell 1, the anti-clogging assembly 4 is arranged on the top of the partition plate 2, a positioning assembly 7 is arranged on the partition plate 2, the positioning assembly 7 is used for installing and disassembling the filter assembly 3, the filter assembly 3 is detachably installed on the partition plate 2 through the positioning assembly 7, the outer shell 1 is fixedly connected with a discharge pipe 13, and the discharge pipe 13 facilitates the discharge of the gas after filtering treatment; The anti-clogging component 4 includes a spiral tube 41 fixedly connected to the top of the partition plate 2, the spiral tube 41 is arranged in a spiral shape, and there are three spiral tubes 41, which are evenly distributed on the top of the partition plate 2. A nozzle 46 is opened on the spiral tube 41, and there are three groups of nozzles 46. The three groups of nozzles 46 correspond to the three spiral tubes 41 one by one, and the nozzles 46 are arranged in an inclined shape. The bottom of the nozzle 46 is fixedly connected with an air intake pipe 42, and the air intake pipe 42 is fixedly penetrated through the interior of the partition plate 2. A first solenoid valve 44 is fixedly provided on the air intake pipe 42. The number of the first solenoid valve 44, the air intake pipe 42 and the spiral tube 41 is equal and one by one. The bottom of the air intake pipe 42 is fixedly connected with a transmission pipe 43, which is connected with the three air intake pipes 42, and the transmission pipe 43 is fixedly penetrated through one side of the outer shell 1. The end of the transmission pipe 43 away from the outer shell 1 is provided with a pneumatic component 5, and the pneumatic component 5 is used for generating nitrogen; When it is necessary to clean the filter medium of the filter assembly 3, nitrogen is generated by the air pressure assembly 5, and the nitrogen is transmitted to the inside of the spiral tube 41 through the transmission pipe 43 and the air inlet pipe 42, and then sprayed out through the nozzle 46 in the direction close to the filter medium to backwash the filter assembly 3 to avoid clogging of the filter assembly 3. When it is necessary to flush one of the filter media separately, the corresponding first solenoid valve 44 can be controlled to make the nitrogen flow into the corresponding spiral tube 41, thereby completing the backwashing of a certain filter medium separately, and at the same time avoiding the filter element from getting damp due to the introduction of water during the backwashing process.

[0021] like Figure 2 and Figure 4 As shown, a reinforcing plate 45 is fixedly connected to the top of the partition plate 2, and two reinforcing plates 45 are arranged on each partition plate 2. The reinforcing plates 45 are fixedly connected to the spiral tube 41, and the reinforcing plates 45 increase the stability of the spiral tube 41 during use.

[0022] like Figure 3 As shown, the filter assembly 3 includes a separation filter element 31 tightly attached to the top of the partition plate 2, and a coalescing filter element 32 tightly attached to the top of the partition plate 2. The coalescing filter element 32 is used to preliminarily remove oil mist and water vapor in the compressed air and coalesce them into larger droplets. The separation filter element 31 is used to further separate the coalesced droplets to ensure the cleanliness of the compressed air. A primary filter element 33 is tightly attached to the top of the partition plate 2. The separation filter element 31, the coalescing filter element 32 and the primary filter element 33 are coaxial. Three spiral tubes 41 surround the corresponding separation filter element 31, the coalescing filter element 32 and the outside of the primary filter element 33 respectively. The inner diameters of the separation filter element 31, the coalescing filter element 32 and the primary filter element 33 gradually decrease. The top of the primary filter element 33 is fixedly connected with an external pipe 6. The compressed air of the air compressor is transmitted to the interior of the primary filter element 33 through the external pipe 6, and is filtered and processed from the inside to the outside in sequence through the primary filter element 33, the coalescing filter element 32 and the separation filter element 31.

[0023] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the positioning assembly 7 includes a vertical rod 71 fixedly connected to the top of the partition plate 2, and there are five vertical rods 71. The five vertical rods 71 ​​are located at the top of the partition plate 2 and are distributed in a circular array. A threaded rod 72 is fixedly connected to the top of the vertical rod 71, and a buffer pad 73 is fixedly connected to the top of the vertical rod 71, and the inner circumference of the buffer pad 73 is larger than the outer circumference of the threaded rod 72, and the outer wall of the buffer pad 73 is threadedly connected with a nut 74. The number of vertical rods 71, threaded rods 72, buffer pads 73 and nuts 74 is equal and one-to-one corresponding. The buffer pad 73 is mainly made of rubber material and has a certain elasticity. The top of the outer shell 1 is detachably connected with a closing plate 75 through the vertical rod 71, the threaded rod 72 and the buffer pad 73. After the closing plate 75 moves to fit with the buffer pad 73, it moves downward along with the outer wall of the threaded rod 72 through the nut 74, thereby securing the closing plate 75.

[0024] like Figure 2 , Figure 6 and Figure 7 As shown, a circular hole 76 is opened on the closing plate 75, the outer circumference of the threaded rod 72 is smaller than the inner circumference of the circular hole 76, the number of the circular holes 76 and the threaded rod 72 is equal and corresponds one to one, the inner circumference of the circular hole 76 is smaller than the outer circumference of the buffer pad 73, and the circular hole 76 facilitates the threaded rod 72 to pass through the closing plate 75.

[0025] like Figure 1 , Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, three annular airbags 77 are fixedly connected to the bottom of the closing plate 75, and the three annular airbags 77 are located between the filter assembly 3 and the closing plate 75. The three annular airbags 77 correspond to the separation filter element 31, the coalescing filter element 32 and the primary filter element 33, respectively. The three annular airbags 77 are fixedly connected with a connecting pipe 78, and the connecting pipe 78 connects the three annular airbags 77 together to facilitate the circulation of gas. One of the annular airbags 77 is fixedly connected with an inflation pipe 79. When the filter assembly 3 is in a limited state, the three annular airbags 77 are respectively connected to the separation filter element 31, the coalescing filter element 32 and the primary filter element 33. 1. The tops of the coalescing filter element 32 and the primary filter element 33 are fitted together, and a second solenoid valve 710 is fixed on the inflation tube 79. The inflation tube 79 is fixedly passed through the closing plate 75. The second solenoid valve 710 is fixed on one end of the inflation tube 79 away from one of the annular airbags 77. Through the coordinated use of the second solenoid valve 710 and the first solenoid valve 44, the nitrogen transmitted inside the horizontal tube 53 is transmitted to the inside of the annular airbag 77 through the inflation tube 79, and the annular airbag 77 expands accordingly, thereby increasing the sealing between the closing plate 75 and the filter assembly 3 to avoid gas leakage.

[0026] like Figure 1 , Figure 4 , Figure 6 and Figure 8 As shown, the pneumatic assembly 5 includes a nitrogen generator 51 on one side of the outer shell 1, and the air outlet of the nitrogen generator 51 is fixedly connected with an output pipe 52, one end of the output pipe 52 is fixedly connected with a horizontal pipe 53, the inflation pipe 79 is connected with the horizontal pipe 53, the horizontal pipe 53 is fixedly connected with a guide pipe 54, the guide pipe 54 is a hose, and a pressure gauge 55 is fixedly provided on the horizontal pipe 53, and the guide pipe 54 is connected with the transmission pipe 43. After the nitrogen generator 51 is operated, the generated nitrogen flows to the inside of the guide pipe 54 through the output pipe 52 and the horizontal pipe 53, and is transmitted to the transmission pipe 43. When the first solenoid valve 44 is closed and the second solenoid valve 710 is in an open state, the nitrogen in the horizontal pipe 53 is transmitted to the annular airbag 77 through the inflation pipe 79.

[0027] like Figure 2 and Figure 7 As shown, a drain pipe 8 is fixedly connected to the bottom of the partition plate 2. Three drain pipes 8 are arranged. The three drain pipes 8 are arranged at the bottom of the partition plate 2 in a linear array. The diameter of the drain pipe 8 below the primary filter element 33 is larger than the diameters of the other two drain pipes 8. A valve 9 is fixedly provided on the drain pipe 8. A collecting tank 10 is provided at the bottom of the outer shell 1. The bottom of the drain pipe 8 is located inside the collecting tank 10. Under the action of the valve 9, the oil-water mixture filtered and transmitted by the separation filter element 31, the coalescing filter element 32 and the primary filter element 33 flows and drips into the collecting tank 10.

[0028] like Figure 3 and Figure 7 As shown, a limiting groove 11 is provided on the top of the partition plate 2, and there are three limiting grooves 11, which are arranged in sequence from the outside to the inside, and the three limiting grooves 11 correspond one by one to the separation filter element 31, the coalescing filter element 32 and the primary filter element 33 respectively. The partition plate 2 is fixedly connected with a gasket 12 through the limiting groove 11, and the number of the limiting grooves 11 and the gasket 12 are equal and correspond one by one, and the gasket 12 is located between the partition plate 2 and the filter assembly 3. The limiting grooves 11 and the gasket 12 make the filter assembly 3 fit tightly against the partition plate 2, which is convenient for the installation of the filter assembly 3.

[0029] An oil-water separation filter for an air compressor comprises the above-mentioned oil-water separation filter element for an air compressor.

[0030] Among them, the oil-water separation filter element and filter of the present invention were installed in the air compressor system of a certain factory. The oil content of the compressed air after treatment was reduced from the original 3ppm to below 0.1ppm, which greatly improved the quality of the compressed air, reduced the pollution to the gas-using equipment, and reduced the maintenance cost.

[0031] In the air compressor system of another factory, the oil-water separation filter element and filter of the present invention are used to achieve efficient oil-water separation of compressed air, reduce the discharge of oil-water mixture, and reduce environmental pollution. At the same time, due to the high separation efficiency, the frequency of filter element replacement is reduced, thereby reducing the operating costs of the factory.

[0032] Working principle: like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the oil-water separation filter element and filter of the air compressor, when in use, first connect the discharge pipe 13 of the compressed gas of the air compressor to the external pipe 6, the compressed gas is transmitted from top to bottom to the inside of the outer shell 1, and the compressed gas is filtered from the inside to the outside in sequence through the primary filter element 33, the coalescing filter element 32 and the separation filter element 31, the primary filter element 33 separates the large particle impurities in the air, the coalescing filter element 32 preliminarily removes the oil mist and water vapor in the compressed air, and coalesces them into larger droplets, the primary filter element 33 further separates the coalesced droplets to ensure that the cleanliness of the compressed air reaches a higher standard, the filtered gas is discharged through the discharge pipe 13, and through the action of the sewage pipe 8 and the valve 9, the impurities filtered and separated by the filter assembly 3 fall from top to bottom into the inside of the collection tank 10, so that the separated oil-water mixture is collected to avoid blockage caused by the accumulation of the oil-water mixture; When cleaning the separation filter element 31, the coalescing filter element 32 and the primary filter element 33, the nitrogen generator 51 is operated, and the nitrogen is transmitted to the inside of the guide pipe 54 through the output pipe 52 and the horizontal pipe 53, and its pressure value is observed by the pressure gauge 55. Then, the nitrogen is transmitted to the inside of the intake pipe 42 through the transmission pipe 43, and the nitrogen flows through the spiral tube 41 and is sprayed out obliquely through the nozzle 46, so as to backwash the separation filter element 31, the coalescing filter element 32 and the primary filter element 33. During the backwashing process, no chemical reaction will occur with the filter element material, which can effectively protect the filter element and extend its service life. Secondly, it avoids the filter element from getting damp due to the introduction of water during the backwashing process, thereby avoiding impurities clogging the filter medium, and the flow direction of the gas can be controlled by controlling the first solenoid valve 44, so that the separation filter element 31, the coalescing filter element 32 and the primary filter element 33 can be backwashed individually; When the separation filter element 31, the coalescing filter element 32 and the primary filter element 33 need to be replaced, the separation filter element 31, the coalescing filter element 32 and the primary filter element 33 are placed on the partition plate 2 in sequence from the outside to the inside, and the closing plate 75 moves vertically from top to bottom and penetrates the threaded rod 72 through the circular hole 76. At this time, the three annular airbags 77 are respectively fitted with the tops of the separation filter element 31, the coalescing filter element 32 and the primary filter element 33, and then the nut 74 moves downward as the threaded rod 72 rotates until it is tightly fitted with the closing plate 75. Through the coordinated use of the first solenoid valve 44 and the second solenoid valve 710, nitrogen flows through the inflation pipe 79 to the inside of the annular airbag 77, and through the action of the connecting pipe 78, the three annular airbags 77 expand at the same time, thereby increasing the sealing between the closing plate 75 and the filter assembly 3 to avoid gas leakage.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An oil-water separation filter element for an air compressor, characterized in that: The invention comprises an outer shell (1), a filter assembly (3) for filtering compressed air, and an anti-clogging assembly (4) for preventing clogging of the filter medium, wherein the filter assembly (3) is arranged inside the outer shell (1), a partition plate (2) is fixedly connected to the inside of the outer shell (1), the anti-clogging assembly (4) is arranged on the top of the partition plate (2), a positioning assembly (7) is arranged on the partition plate (2), the filter assembly (3) is detachably mounted on the partition plate (2) via the positioning assembly (7), and a discharge pipe (13) is fixedly connected to the outer shell (1); The anti-blocking component (4) comprises a spiral tube (41) fixedly connected to the top of the partition plate (2), the spiral tube (41) being arranged in a spiral shape, a nozzle (46) being provided on the spiral tube (41), and the nozzle (46) being arranged in an inclined shape, an air intake pipe (42) being fixedly connected to the bottom of the nozzle (46), the air intake pipe (42) being fixedly passed through the interior of the partition plate (2), a first solenoid valve (44) being fixedly provided on the air intake pipe (42), a transmission pipe (43) being fixedly connected to the bottom of the air intake pipe (42), and the transmission pipe (43) being fixedly passed through one side of the outer shell (1), and a pneumatic component (5) being provided at one end of the transmission pipe (43) away from the outer shell (1).

2. The oil-water separation filter element of an air compressor according to claim 1, characterized in that: A reinforcing plate (45) is fixedly connected to the top of the partition plate (2), and the reinforcing plate (45) is fixedly connected to the spiral tube (41).

3. The oil-water separation filter element of an air compressor according to claim 1, characterized in that: The filter assembly (3) comprises a separation filter element (31) closely attached to the top of a partition plate (2); a coalescing filter element (32) closely attached to the top of the partition plate (2); a primary filter element (33) closely attached to the top of the partition plate (2); the inner diameters of the separation filter element (31), the coalescing filter element (32) and the primary filter element (33) gradually decrease from the outside to the inside; and the top of the primary filter element (33) is fixedly connected to an external pipe (6).

4. The oil-water separation filter element of an air compressor according to claim 1, characterized in that: The positioning assembly (7) comprises a vertical rod (71) fixedly connected to the top of the partition plate (2); a threaded rod (72) fixedly connected to the top of the vertical rod (71); a buffer pad (73) fixedly connected to the top of the vertical rod (71); an inner circumference of the buffer pad (73) is larger than an outer circumference of the threaded rod (72); a nut (74) is threadedly connected to the outer wall of the buffer pad (73); and a closing plate (75) is detachably connected to the top of the outer shell (1) via the vertical rod (71), the threaded rod (72) and the buffer pad (73).

5. The oil-water separation filter element of an air compressor according to claim 4, characterized in that: The closing plate (75) is provided with a circular hole (76), the outer circumference of the threaded rod (72) is smaller than the inner circumference of the circular hole (76), and the inner circumference of the circular hole (76) is smaller than the outer circumference of the buffer pad (73).

6. The oil-water separation filter element of an air compressor according to claim 4, characterized in that: Three annular airbags (77) are fixedly connected to the bottom of the closing plate (75). The three annular airbags (77) are located between the filter assembly (3) and the closing plate (75). The three annular airbags (77) are all fixedly connected to a connecting pipe (78). One of the annular airbags (77) is fixedly connected to an inflation pipe (79). The inflation pipe (79) is fixedly passed through the closing plate (75). A second solenoid valve (710) is fixedly provided on the inflation pipe (79).

7. The oil-water separation filter element of an air compressor according to claim 6, characterized in that: The pneumatic assembly (5) comprises a nitrogen generator (51) on one side of the outer shell (1); the gas outlet of the nitrogen generator (51) is fixedly connected to an output pipe (52); one end of the output pipe (52) is fixedly connected to a horizontal pipe (53); the inflation pipe (79) is connected to the horizontal pipe (53); a flow guide pipe (54) is fixedly connected to the horizontal pipe (53); a pressure gauge (55) is fixedly provided on the horizontal pipe (53); and the flow guide pipe (54) is connected to the transmission pipe (43).

8. The oil-water separation filter element for an air compressor according to claim 1, characterized in that: The bottom of the partition plate (2) is fixedly connected to a sewage pipe (8), and a valve (9) is fixedly provided on the sewage pipe (8). A collecting tank (10) is provided at the bottom of the outer shell (1), and the bottom of the sewage pipe (8) is located inside the collecting tank (10).

9. The oil-water separation filter element of an air compressor according to claim 1, characterized in that: A limiting groove (11) is provided on the top of the partition plate (2), and a gasket (12) is fixedly connected to the partition plate (2) via the limiting groove (11), and the gasket (12) is located between the partition plate (2) and the filter assembly (3).

10. An oil-water separation filter for an air compressor, characterized in that: An oil-water separation filter element for an air compressor comprising the oil-water separation filter element as described in any one of claims 1 to 9.

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