A screw air compressor rotor linear air filter assembly

Abstract

The present invention discloses a screw air compressor rotor linear air filter assembly, which belongs to the technical field of air compressor air purification, and includes an air inlet valve arranged on the top of the left side of a chassis, a filter assembly arranged on the top of the inner cavity of the chassis, the filter assembly including a filter tank, a filter element inserted in the inner cavity of the filter tank, a sealing cover threadedly connected to the rear side of the surface of the filter tank, an air inlet pipe connected to the left side of the bottom of the filter tank, and an end of the air inlet pipe away from the filter tank is connected to the air inlet valve. The present invention compresses and stores air through the coordinated use of a chassis, a rotor structure and an air storage tank, and filters the inhaled gas through the setting of the filter assembly at the same time. The propulsion assembly and the back-blowing assembly can also be used in coordination, and the air filter element can be back-blown and cleaned after each use, so as to achieve the purpose of clean supply gas, large twin-screw compression ratio and automatic cleaning for easy maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of air compressors, and in particular relates to a screw type air compressor rotor linear air filter assembly. Background Art

[0002] An air compressor is a device used to compress gas. It is widely used in many fields such as industrial production, machinery manufacturing, construction, and automobile maintenance. Among them, the screw air compressor rotor linear air filter assembly has become the most widely used type of air compressor in the market due to its simple structure, high reliability, stable operation, and easy operation and maintenance.

[0003] However, the air intake filtration system of the screw air compressor rotor linear air filter assembly is affected by long-term use, and the filtering effect has declined. Impurities in the air can easily clog the filter components, resulting in reduced air intake efficiency and poor filtering effect, which in turn affects the performance and service life of the entire compressor. The filter components need to be replaced or cleaned frequently, which will increase the cost of use and the maintenance time and workload of the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a screw air compressor rotor linear air filter assembly, which adopts a back-blowing cleaning method and automatically removes dust after each use, so that the filter system of the secondary air compressor is in the best condition, reducing maintenance costs, reducing maintenance times and improving the performance and service life of the compressor, so as to solve the above-mentioned technical problems.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: a screw air compressor rotor linear air filter assembly, comprising an air inlet valve arranged on the top of the left side of a chassis, a filter assembly is arranged on the top of the inner cavity of the chassis, the filter assembly comprises a filter tank, a filter element is inserted into the inner cavity of the filter tank, a sealing cover is threadedly connected to the rear side of the surface of the filter tank, an air inlet pipe is connected to the left side of the bottom of the filter tank, an end of the air inlet pipe away from the filter tank is connected to the air inlet valve, a front end of the filter tank is connected to a corrugated air supply pipe, an air storage tank is fixedly installed on the rear side of the bottom of the inner cavity of the chassis, a heat dissipation module is arranged on the right side of the inner cavity of the chassis, a propulsion assembly is arranged on the top of the filter tank, and a backflush assembly is arranged in the inner cavity of the chassis;

[0006] It also includes a rotor structure, which includes a compression shell fixedly installed on the left side of the chassis inner cavity, the front and rear sides of the compression shell inner cavity are respectively rotatably connected with a male rotor and a female rotor, the surfaces of the female rotor and the male rotor are fixedly connected with elliptical arc convex heads, the two elliptical arc convex heads are meshed with each other, the right side of the male rotor surface is fixedly connected with a driving gear, the right side of the female rotor surface is fixedly connected with a driven gear, the driven gear and the driving gear are meshed, a sealing shell is fixedly installed on the right side of the compression shell by bolts, the sealing shell is wrapped around the surfaces of the driving gear and the driven gear, the right ends of the female rotor and the sealing sleeve both penetrate to the right side of the compression shell, a variable frequency motor is fixedly installed on the right side of the compression shell, the output shaft of the variable frequency motor is fixedly connected to the male rotor, the air inlet end of the compression shell is connected to the corrugated air supply pipe, and the air outlet end of the compression shell is connected to the air storage tank.

[0007] Preferably, the front end and the rear end on the left side of the compression shell and the front end and the rear end on the right side of the sealing shell are fixedly installed with sealing sleeves, and the four sealing sleeves are respectively sleeved on the surfaces of the female rotor and the male rotor.

[0008] Preferably, the propulsion assembly includes an electric telescopic rod fixedly mounted on the top of the filter tank, the output end of the electric telescopic rod is fixedly connected to a displacement head, the front side of the displacement head is fixedly connected to a first sealing plug, and the first sealing plug is sleeved on the surface of the connecting rod.

[0009] Preferably, both ends of the front side of the displacement head are fixedly connected with connecting rods, the front ends of the two connecting rods are fixedly connected with second sealing plugs, and the second sealing plugs are sealed on the rear side of the filter element.

[0010] Preferably, the back-blowing assembly comprises an air pump fixedly mounted on the right side of the inner cavity of the chassis, a rotating tube is rotatably connected between the displacement head and the second sealing plug, and a plurality of arc-shaped blowing nozzles are fixedly mounted in an annular manner on the surface of the rotating tube.

[0011] Preferably, the air outlet end of the air pump is connected to a connecting hose, an air pipe is provided through the rear side of the displacement head, the front end of the air pipe is connected to the rotating tube through a rotating joint, and the rear end of the air pipe is connected to the connecting hose.

[0012] Preferably, a check valve pipe is fixedly connected to the right side of the bottom of the filter tank, and a fine filter is threadedly connected to the bottom of the check valve pipe.

[0013] Preferably, guide frames are fixedly connected to both sides of the displacement head, and fixing ears are fixedly connected to the rear ends of both sides of the filter tank, and the guide frames are slidably connected to the inner cavities of the fixing ears.

[0014] Preferably, the front and rear sides of the surface of the filter tank are both provided with clamp brackets, and the clamp brackets are fixedly connected to the top of the inner cavity of the chassis by bolts.

[0015] A screw air compressor rotor linear air filter assembly, the use method of which is as follows:

[0016] 1. When in use, the user drives the male rotor to rotate through the frequency conversion motor. During the rotation of the male rotor, the female rotor is driven to rotate through the meshing transmission of the driving gear and the driven gear. Under the synchronous rotation of the female rotor and the male rotor, the two elliptical arc convex heads rotate towards each other to absorb and compress the air. The compressed air is discharged into the inner cavity of the air storage tank. During the inhalation process, the gas enters the inner cavity of the filter tank from the inner cavity of the air intake valve and the air intake pipe. At this time, the impurities mixed in the air are retained on the surface of the filter element. The filtered gas enters the inner cavity of the filter element and enters the inner cavity of the compression shell from the inner cavity of the corrugated air supply pipe;

[0017] 2. After a single use, the air inlet valve is closed, the electric telescopic rod is opened and the displacement head is pulled to the front side, so that the rotating tube and the connecting rod enter the inner cavity of the filter element, so that the first sealing plug is sealed at the rear side of the filter element, and the second sealing plug is sealed at the front side of the filter element. Then the air pump is turned on and the gas is transported to the inner cavity of the air pipe through the connecting hose. The gas enters the inner cavity of the rotating tube from the inner cavity of the air pipe and is sprayed out by the arc-shaped blowing nozzle. Affected by the spray angle of the arc-shaped blowing nozzle, the reaction force generated by the gas causes the rotating tube to rotate, and then the rotating sprayed gas is uniformly stressed on the inner wall of the filter element. Under the action of the blowing force, the dust and impurities on the surface of the filter element move and leave the surface of the filter element. After leaving the surface of the filter element, the dust enters the inner cavity of the fine filter through the inner cavity of the check valve tube and is stored by the fine filter.

[0018] 3. When the air compressor is used again, the electric telescopic rod pushes the displacement head to the rear side, and the displacement head drives the rotating tube and the arc-shaped blowing nozzle to leave the inner cavity of the filter element. At the same time, the second sealing plug is driven to move to the rear side through the connecting rod and seals on the rear side of the filter element, so that the filter element is in normal working condition.

[0019] The beneficial effects of the present invention are as follows: the present invention compresses and stores air through the coordinated use of a chassis, a rotor structure and an air storage tank, and filters the inhaled gas through the setting of a filter component. The propulsion component and the back-blowing component are used in coordination. After each use, the air filter element is back-blown and cleaned, thereby achieving the purpose of clean supply gas, a large twin-screw compression ratio, and automatic cleaning for easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or other advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings, which are only exemplary and do not limit the present invention, wherein:

[0021] Figure 1 A schematic side view of an embodiment of the present invention;

[0022] Figure 2 An embodiment of the present invention Figure 1 A partial enlarged view of point A;

[0023] Figure 3 A three-dimensional schematic diagram of a rotor structure according to an embodiment of the present invention;

[0024] Figure 4 This is a three-dimensional exploded view of a rotor structure according to an embodiment of the present invention;

[0025] Figure 5 A three-dimensional schematic diagram of a filter assembly and a backflush assembly according to an embodiment of the present invention;

[0026] Figure 6 A three-dimensional exploded view of a filter assembly according to an embodiment of the present invention;

[0027] Figure 7 A three-dimensional exploded view of a propulsion assembly and a blowback assembly according to an embodiment of the present invention;

[0028] Figure 8 A side cross-sectional view of a filter assembly, a backflush assembly and a propulsion assembly according to an embodiment of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1. Chassis, 2. Rotor structure, 21. Compression shell, 22. Female rotor, 23. Male rotor, 24. Sealing sleeve, 25. Elliptical arc convex head, 26. Driving gear, 27. Driven gear, 28. Sealing shell, 29. Frequency conversion motor, 3. Inlet valve, 4. Filter assembly, 41. Filter tank, 42. Filter element, 43. Sealing cover, 44. Inlet pipe, 45. Corrugated air supply pipe, 5. Air storage tank, 6. Heat dissipation module, 7. Propulsion assembly, 71. Electric telescopic rod, 72. Displacement head, 73. Connecting rod, 74. First sealing plug, 75. Second sealing plug, 8. Backblowing assembly, 81. Air pump, 82. Connecting hose, 83. Rotating tube, 84. Arc blowing nozzle, 85. Air pipe, 86. Check valve pipe, 87. Fine filter, 9. Guide frame, 10. Fixing ear, 11. Clamp bracket. DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the screw air compressor rotor linear air filter assembly of the present invention will be described with reference to the accompanying drawings.

[0032] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0033] The drawings of this specification are schematic diagrams, which assist in explaining the concept of the present invention and schematically show the shapes of various parts and their mutual relationships. Please note that in order to clearly show the structures of various components of the embodiments of the present invention, the drawings are not drawn according to the same scale. The same reference numerals are used to represent the same parts.

[0034] Embodiment 1: Figure 1-8 The present invention shows a screw air compressor rotor linear air filter assembly according to an embodiment of the present invention, which is applied to the screw air compressor rotor linear air filter assembly, including an air intake valve 3 arranged on the top of the left side of the chassis 1, a filter assembly 4 is arranged on the top of the inner cavity of the chassis 1, and the filter assembly 4 includes a filter tank 41, and the front and rear sides of the surface of the filter tank 41 are sleeved with a clamp bracket 11, and the clamp bracket 11 is fixedly connected to the top of the inner cavity of the chassis 1 by bolts, and a filter element 42 is inserted into the inner cavity of the filter tank 41, and a sealing cover 43 is threadedly connected to the rear side of the surface of the filter tank 41. The left side of the bottom of the filter tank 41 is connected with an air intake pipe 44, and the end of the air intake pipe 44 away from the filter tank 41 is connected with the air intake valve 3, and the front end of the filter tank 41 is connected with a corrugated air supply pipe 45, and an air storage tank 5 is fixedly installed on the rear side of the bottom of the inner cavity of the chassis 1, and a heat dissipation module 6 is arranged on the right side of the inner cavity of the chassis 1, and a propulsion assembly 7 is arranged on the top of the filter tank 41, and a backflush assembly 8 is arranged in the inner cavity of the chassis 1;

[0035] The rotor structure 2 also includes a compression housing 21 fixedly mounted on the left side of the inner cavity of the chassis 1, and the front and rear sides of the inner cavity of the compression housing 21 are rotatably connected to a male rotor 23 and a female rotor 22 respectively, and the surfaces of the female rotor 22 and the male rotor 23 are fixedly connected to elliptical arc convex heads 25, and the two elliptical arc convex heads 25 are meshed with each other, and the right side of the surface of the male rotor 23 is fixedly connected to a driving gear 26, and the right side of the surface of the female rotor 22 is fixedly connected to a driven gear 27, and the driven gear 27 is meshed with the driving gear 26, and a sealing shell 28 is fixedly installed on the right side of the compression housing 21 by bolts, and the compression housing 2 The front and rear ends of the left side of the sealing shell 28 and the front and rear ends of the right side of the sealing shell 28 are fixedly installed with sealing sleeves 24. The four sealing sleeves 24 are respectively sleeved on the surfaces of the female rotor 22 and the male rotor 23. The sealing shell 28 wraps around the surfaces of the driving gear 26 and the driven gear 27. The right ends of the female rotor 22 and the sealing sleeves 24 penetrate to the right side of the compression shell 21. The right side of the compression shell 21 is fixedly installed with a variable frequency motor 29. The output shaft of the variable frequency motor 29 is fixedly connected to the male rotor 23. The air inlet end of the compression shell 21 is connected to the corrugated air supply pipe 45, and the air outlet end of the compression shell 21 is connected to the air storage tank 5.

[0036] Embodiment 2: It is basically the same as embodiment 1, and furthermore, the propulsion assembly 7 includes an electric telescopic rod 71 fixedly mounted on the top of the filter tank 41, the output end of the electric telescopic rod 71 is fixedly connected to a displacement head 72, both sides of the displacement head 72 are fixedly connected to guide frames 9, both sides of the rear end of the filter tank 41 are fixedly connected to fixed ears 10, the guide frames 9 are slidably connected to the inner cavity of the fixed ears 10, and the coordinated use of the guide frames 9 and the fixed ears 10 plays a role in limiting and guiding the displacement head 72, thereby improving the stability of the displacement head 72 during the sliding process, and at the same time making the first sealing plug 74 and the second sealing plug 75 accurately block the corresponding positions, and the front side of the displacement head 72 is fixedly connected to the first sealing plug 7 4. The first sealing plug 74 is sleeved on the surface of the connecting rod 73. The two ends of the front side of the displacement head 72 are fixedly connected to the connecting rod 73. The front ends of the two connecting rods 73 are fixedly connected to the second sealing plugs 75. The second sealing plug 75 is blocked on the rear side of the filter element 42. Through the setting of the propulsion component 7, under the drive of the electric telescopic rod 71, the displacement head 72 and the connecting rod 73, the first sealing plug 74, the second sealing plug 75 and the rotating tube 83 are propulsed, so that the first sealing plug 74 and the second sealing plug 75 can block the corresponding positions during the back-blowing cleaning process, thereby controlling the dust cleaning path, and at the same time, the rotating tube 83 and the arc-shaped blowing nozzle 84 can reach the specified position to start the cleaning operation.

[0037] Embodiment 3: It is basically the same as Embodiment 1, and furthermore, the back-blowing assembly 8 includes an air pump 81 fixedly mounted on the right side of the inner cavity of the chassis 1, a rotating tube 83 is rotatably connected between the displacement head 72 and the second sealing plug 75, and a plurality of arc-shaped blowing nozzles 84 are fixedly mounted on the surface of the rotating tube 83 in an annular manner, the air outlet end of the air pump 81 is connected with a connecting hose 82, an air pipe 85 is provided on the rear side of the displacement head 72, the front end of the air pipe 85 is connected with the rotating tube 83 through a rotating joint, and the rear end of the air pipe 85 is connected with the connecting hose 82, a check valve pipe 86 is fixedly connected to the right side of the bottom of the filter tank 41, and a fine filter 87 is threadedly connected to the bottom of the check valve pipe 86, through the setting of the back-blowing assembly 8, the coordinated use of the air pump 81 and the connecting hose 82 plays a role in supplying air to the air pipe 85, and at the same time, under the coordinated use of the rotating tube 83 and the arc-shaped blowing nozzle 84, the inner cavity of the filter element 42 is backblown by the rotating wind force, thereby cleaning the dust attached to the surface of the filter element 42.

[0038] A screw air compressor rotor linear air filter assembly, the use method of which is as follows:

[0039] 1. When in use, the user drives the male rotor 23 to rotate through the frequency conversion motor 29. During the rotation process, the male rotor 23 drives the female rotor 22 to rotate through the meshing transmission of the driving gear 26 and the driven gear 27. Under the synchronous rotation of the female rotor 22 and the male rotor 23, the two elliptical arc convex heads 25 rotate towards each other to absorb and compress the air. The compressed air is discharged into the inner cavity of the air storage tank 5. During the inhalation process, the gas enters the inner cavity of the filter tank 41 from the inner cavity of the air intake valve 3 and the air intake pipe 44. At this time, the impurities mixed in the air are retained on the surface of the filter element 42. The filtered gas enters the inner cavity of the filter element 42 and enters the inner cavity of the compression housing 21 from the inner cavity of the corrugated air supply pipe 45.

[0040] 2. After a single use, the air inlet valve 3 is closed, the electric telescopic rod 71 is opened and the displacement head 72 is pulled forward, so that the rotating tube 83 and the connecting rod 73 enter the inner cavity of the filter element 42, so that the first sealing plug 74 is blocked at the rear side of the filter element 42, and the second sealing plug 75 is blocked at the front side of the filter element 42. Then the air pump 81 is turned on and the gas is transported to the inner cavity of the air pipe 85 through the connecting hose 82. The gas enters the inner cavity of the rotating tube 83 from the inner cavity of the air pipe 85 and is ejected by the arc-shaped blowing nozzle 84. Affected by the injection angle of the arc-shaped blowing nozzle 84, the reaction force generated by the gas causes the rotating tube 83 to rotate, and then the rotating ejected gas is uniformly forced on the inner wall of the filter element 42. Under the action of the blowing force, the dust and impurities on the surface of the filter element 42 move and separate from the surface of the filter element 42. After separating from the surface of the filter element 42, the dust enters the inner cavity of the fine filter 87 through the inner cavity of the check valve tube 86 and is stored by the fine filter 87.

[0041] 3. When the air compressor is used again, the electric telescopic rod 71 pushes the displacement head 72 to move backward, and the displacement head 72 drives the rotating tube 83 and the arc-shaped blowing nozzle 84 to separate from the inner cavity of the filter element 42. At the same time, the second sealing plug 75 is driven to move backward through the connecting rod 73 and seal on the rear side of the filter element 42, so that the filter element 42 is in normal working condition.

[0042] In summary, the screw air compressor rotor linear air filter assembly compresses and stores air through the coordinated use of the chassis 1, the rotor structure 2 and the air storage tank 5. At the same time, the inhaled gas is filtered through the setting of the filter component 4. The propulsion component 7 and the back-blowing component 8 are used in coordination. After each use, the air filter element is back-blown and cleaned, thereby achieving the purpose of clean gas supply, large twin-screw compression ratio and automatic cleaning for easy maintenance.

[0043] The technical features disclosed above are not limited to the disclosed combinations with other features. Those skilled in the art may also make other combinations between the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. A screw air compressor rotor linear air filter assembly, characterized in that: The invention comprises an air intake valve (3) arranged at the top of the left side of a case (1); a filter assembly (4) is arranged at the top of the inner cavity of the case (1); the filter assembly (4) comprises a filter tank (41); a filter element (42) is inserted into the inner cavity of the filter tank (41); a sealing cover (43) is threadedly connected to the rear side of the surface of the filter tank (41); an air intake pipe (44) is connected to the left side of the bottom of the filter tank (41); an end of the air intake pipe (44) away from the filter tank (41) is connected to the air intake valve (3); and a front end of the filter tank (41) is connected to the filter element (42). A corrugated air supply pipe (45) is connected, an air storage tank (5) is fixedly mounted on the rear side of the bottom of the inner cavity of the chassis (1), a heat dissipation module (6) is arranged on the right side of the inner cavity of the chassis (1), a propulsion assembly (7) is arranged on the top of the filter tank (41), the propulsion assembly (7) comprises an electric telescopic rod (71) fixedly mounted on the top of the filter tank (41), a displacement head (72) is fixedly connected to the output end of the electric telescopic rod (71), a first sealing plug (74) is fixedly connected to the front side of the displacement head (72), and the first sealing plug (74) is fixedly connected to the output end of the electric telescopic rod (71). 4) is sleeved on the surface of the connecting rod (73), both ends of the front side of the displacement head (72) are fixedly connected to the connecting rod (73), the front ends of the two connecting rods (73) are fixedly connected to the second sealing plugs (75), the second sealing plugs (75) are blocked on the rear side of the filter element (42), the inner cavity of the chassis (1) is provided with a backflush assembly (8), the backflush assembly (8) includes an air pump (81) fixedly installed on the right side of the inner cavity of the chassis (1), a rotating tube (83) is rotatably connected between the displacement head (72) and the second sealing plug (75), the A plurality of arc-shaped blowing nozzles (84) are fixedly mounted in an annular shape on the surface of the rotating tube (83); the air outlet end of the air pump (81) is connected to a connecting hose (82); an air pipe (85) is provided through the rear side of the displacement head (72); the front end of the air pipe (85) is connected to the rotating tube (83) via a rotating joint; the rear end of the air pipe (85) is connected to the connecting hose (82); a check valve pipe (86) is fixedly connected to the right side of the bottom of the filter tank (41); and a fine filter (87) is threadedly connected to the bottom of the check valve pipe (86); The invention also comprises a rotor structure (2), wherein the rotor structure (2) comprises a compression housing (21) fixedly mounted on the left side of the inner cavity of the chassis (1), wherein the front side and the rear side of the inner cavity of the compression housing (21) are rotatably connected to a male rotor (23) and a female rotor (22), respectively, wherein the surfaces of the female rotor (22) and the male rotor (23) are both fixedly connected to elliptical arc convex heads (25), wherein the two elliptical arc convex heads (25) are engaged with each other, wherein the right side of the surface of the male rotor (23) is fixedly connected to a driving gear (26), and the right side of the surface of the female rotor (22) is fixedly connected to a driven gear (27), wherein the driven gear (27) and the driving gear ( 26) are meshed with each other, a sealing shell (28) is fixedly installed on the right side of the compression housing (21) by bolts, and the sealing shell (28) is wrapped around the surface of the driving gear (26) and the driven gear (27). The right ends of the female rotor (22) and the sealing sleeve (24) both penetrate to the right side of the compression housing (21), and a variable frequency motor (29) is fixedly installed on the right side of the compression housing (21). The output shaft of the variable frequency motor (29) is fixedly connected to the male rotor (23), the air inlet end of the compression housing (21) is connected to the corrugated air supply pipe (45), and the air outlet end of the compression housing (21) is connected to the air storage tank (5).

2. A screw air compressor rotor linear air filter assembly according to claim 1, characterized in that: The front and rear ends of the left side of the compression housing (21) and the front and rear ends of the right side of the sealing housing (28) are fixedly mounted with sealing sleeves (24), and the four sealing sleeves (24) are respectively sleeved on the surfaces of the female rotor (22) and the male rotor (23).

3. A screw air compressor rotor linear air filter assembly according to claim 2, characterized in that: Guide frames (9) are fixedly connected to both sides of the displacement head (72), and fixing ears (10) are fixedly connected to the rear ends of both sides of the filter tank (41), and the guide frames (9) are slidably connected to the inner cavities of the fixing ears (10).

4. A screw air compressor rotor linear air filter assembly according to claim 3, characterized in that: A clamp bracket (11) is sleeved on the front and rear sides of the surface of the filter tank (41); the clamp bracket (11) is fixedly connected to the top of the inner cavity of the chassis (1) by bolts.

5. A method for using a screw air compressor rotor linear air filter assembly, applied to the screw air compressor rotor linear air filter assembly according to claim 4, characterized in that: Here’s how to use it:

1. When in use, the user drives the male rotor (23) to rotate through the variable frequency motor (29). During the rotation process, the male rotor (23) drives the female rotor (22) to rotate through the meshing transmission of the driving gear (26) and the driven gear (27). Under the synchronous rotation of the female rotor (22) and the male rotor (23), the two elliptical arc convex heads (25) rotate towards each other to absorb and compress air. The compressed air is discharged into the inner cavity of the air storage tank (5). During the inhalation process, the gas enters the inner cavity of the filter tank (41) from the inner cavity of the air intake valve (3) and the air intake pipe (44). At this time, impurities mixed in the air are retained on the surface of the filter element (42). The filtered gas enters the inner cavity of the filter element (42) and enters the inner cavity of the compression housing (21) from the inner cavity of the corrugated air supply pipe (45); Second, after a single use, the air inlet valve (3) is closed, the electric telescopic rod (71) is opened and the displacement head (72) is pulled forward, so that the rotating tube (83) and the connecting rod (73) enter the inner cavity of the filter element (42), so that the first sealing plug (74) is blocked at the rear side of the filter element (42), and the second sealing plug (75) is blocked at the front side of the filter element (42), and then the air pump (81) is turned on and gas is transported to the inner cavity of the air pipe (85) through the connecting hose (82), and the gas enters the rotating tube (83) from the inner cavity of the air pipe (85). ) and is ejected from the arc-shaped blowing nozzle (84). Affected by the ejection angle of the arc-shaped blowing nozzle (84), the reaction force generated by the gas causes the rotating tube (83) to rotate, thereby causing the rotating ejected gas to be uniformly exerted on the inner wall of the filter element (42). Under the action of the blowing force, the dust and impurities on the surface of the filter element (42) move and separate from the surface of the filter element (42). After separating from the surface of the filter element (42), the dust enters the inner cavity of the fine filter (87) through the inner cavity of the check valve tube (86) and is stored by the fine filter (87); 3. When the air compressor is used again, the electric telescopic rod (71) pushes the displacement head (72) to move backward, and the displacement head (72) drives the rotating tube (83) and the arc-shaped blowing nozzle (84) to leave the inner cavity of the filter element (42). At the same time, the second sealing plug (75) is driven to move backward through the connecting rod (73) and seal the rear side of the filter element (42), so that the filter element (42) is in a normal working state.

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