Air compressor with filter cleaning

Abstract

This invention relates to the field of air compressor technology, specifically to an air compressor with filter cleaning function. The compressor includes a housing with a hinged cover at the front. Heat dissipation grooves are provided on both sides of the housing. An internal body is disposed on one side of the upper cavity of the housing. The lower part of the internal body is fixedly connected to the inner cavity of the housing via a support base. A filter cleaning component is disposed on the rear side of the upper cavity of the housing near the internal body. By employing a structure that combines a dust removal component with a backflushing component, when the equipment is stopped, a drive motor drives a rotating rod and a soft brush to revolve and rotate around the filter element. Simultaneously, a reverse pulse airflow is injected from inside the filter element outwards, achieving dual removal of dust adhering to the outer surface of the filter element and deeply embedded dust inside. This effectively solves the problem that existing scraping cleaning equipment struggles to clean deep dust inside the filter element.

Description

Technical Field

[0001] This invention relates to the field of air compressor technology, and more specifically, to an air compressor with filter cleaning function. Background Technology

[0002] During operation, air compressors need to use a filtration device to remove dust and impurities from the air entering the machine to ensure the cleanliness of the compressed air and reduce internal wear. Existing air compressor filter cleaning structures mostly adopt a scraping-type physical cleaning method.

[0003] A search revealed an air compressor with a filter cleaning system, disclosed in publication number CN117504482B, relating to the field of air compressor technology. The invention includes a mounting base, with an air compressor body fixed to its top. A filter cartridge is fixedly mounted on the top of the mounting base via a bracket plate. A cartridge cover is bolted to the top of the filter cartridge, and a filter cartridge body is fixed to the bottom of the cartridge cover, with the filter cartridge body located inside the filter cartridge. The invention also includes a cleaning device comprising a cavity ring, a collection box, a T-shaped perforated disc, and a scraper. The cavity ring is rotatably mounted on the bottom of the inner wall of the filter cartridge. This invention, through the cleaning device, enables a pulley motor and the cavity ring to work together to drive the scraper to scrape the inner wall of the filter cartridge, thereby achieving the purpose of cleaning the inner wall of the filter cartridge. This prevents dust and impurities adhering to the filter cartridge from causing premature clogging and damage to the filter cartridge body, thus shortening its service life.

[0004] The aforementioned patent still has shortcomings in actual use. The device uses a scraper to directly scrape and clean the inner wall of the filter barrel. Although it can remove the floating dust attached to the barrel wall, it is difficult to effectively clean the fine dust embedded in the deep fibers inside the filter element. As a result, the permeability of the filter element itself continues to decrease with the extension of the usage time, which in turn causes the air compressor intake resistance to increase.

[0005] Based on this, the present invention discloses an air compressor with filter cleaning function. Summary of the Invention

[0006] To address the problems mentioned in the background art, this invention provides an air compressor with filter cleaning, comprising a housing, a housing cover hinged to the front side of the housing, heat dissipation grooves on both sides of the housing, an organic body disposed on one side of the upper part of the housing cavity, the lower part of the organic body being fixedly connected to the inner cavity of the housing via a support base, a filter cleaning assembly disposed on the rear side of the upper part of the housing cavity near the organic body, an air storage tank being fixedly connected to the other side of the upper part of the housing cavity, and a controller disposed on the upper part of the front side of the housing.

[0007] To achieve efficient filtration of external air and self-cleaning of the filter element, the cleaning filter assembly includes a dust removal assembly and a backwash assembly. The dust removal assembly includes a filter barrel, with a fixing ring fixedly connected to the surface of the filter barrel. The rear side of the fixing ring is fixedly connected to the inner wall of the housing. A sealing ring is provided at the upper part of the inner cavity of the filter barrel. A filter element is provided inside the filter barrel. The lower part of the filter element is movably connected to the upper part of the inner cavity of the filter barrel. The outer side of the bottom of the filter element surface is movably connected to the sealing ring. The sealing ring is used to seal between the filter barrel and the filter element.

[0008] As a further improvement to this technical solution, an air inlet pipe is connected to one side of the upper part of the machine body, and the upper part of the other end of the air inlet pipe penetrates the inner cavity of the filter barrel and extends into the interior of the filter element. A conveying pipe is connected to the other side of the lower part of the machine body, and the other end of the conveying pipe is connected to the air storage tank.

[0009] As a further improvement to this technical solution, an air inlet is connected to one side of the filter barrel. The air inlet penetrates the housing, and external air enters the inner cavity of the filter barrel through the air inlet. Under the negative pressure of the machine body, the air passes through the filter element to complete filtration and then enters the machine body through the air inlet pipe for compression.

[0010] In order to effectively brush and remove dust adhering to the outer surface of the filter element, a support box is fixedly connected to the upper part of the filter barrel. A drive motor is provided on the other side of the upper surface of the support box. The output shaft of the drive motor passes through the support box. A drive gear is fixedly connected to the output shaft of the drive motor. The drive gear is located in the inner cavity of the support box. A driven gear is meshed with one side of the drive gear. A rotating shaft is fixedly connected to the inner cavity of the driven gear.

[0011] As a further improvement to this technical solution, the lower part of the rotating shaft extends into the interior of the filter barrel, and the connection between the rotating shaft and the filter barrel is connected by a rotary seal. A drive rotating plate is fixedly connected to the lower part of the rotating shaft surface, and a rotating rod is provided on the rear side of the inner cavity of the drive rotating plate. A rotating gear is fixedly connected to the upper part of the rotating rod, and a fixed gear is meshed with the front side of the rotating gear.

[0012] As a further improvement to this technical solution, a plurality of fixed rods are fixedly connected to the upper part of the fixed gear, and the upper part of the fixed rods is fixedly connected to the inner wall of the filter barrel. A soft brush is provided on the lower part of the surface of the rotating rod, and the soft brush is used to clean the filter element. When the drive motor drives the rotating shaft to rotate, the drive rotating plate drives the rotating rod to revolve around the filter element. At the same time, under the meshing action of the fixed gear and the rotating gear, the rotating rod and the soft brush realize their own rotation, thereby performing uniform and deep brushing and cleaning on the outer surface of the filter element.

[0013] To ensure the stability of the axial position of the rotating rod during the rotation cleaning process, a limiting ring is fixedly connected to the upper part of the rotating rod surface. The limiting ring has a limiting groove on its surface, and multiple limiting wheels are rolled inside the limiting groove. A fixed rod is rotatably connected to the opposite side of each limiting wheel, and each fixed rod is fixedly connected to the drive rotating plate.

[0014] As a further improvement to this technical solution, the axial position of the rotating rod is effectively constrained by the rolling engagement of the limiting wheel in the limiting groove, preventing the rotating rod from axially shifting during rotation. This ensures the stability of the mating distance between the soft brush and the filter element surface, avoiding uneven cleaning or filter element damage caused by shifting.

[0015] As a further improvement to this technical solution, a fixed plate is fixedly connected to the bottom of the rotating rod, and a scraper is fixedly connected to the lower part of the fixed plate. The lower part of the scraper is in active contact with the bottom of the inner cavity of the filter barrel. During the revolution of the rotating rod, the scraper moves synchronously against the inner wall of the bottom of the filter barrel, and collects and scrapes the dust deposited at the bottom of the barrel to the ash discharge area.

[0016] In order to thoroughly remove the fine dust embedded deep inside the filter element, the backflushing assembly includes an air blowing pipe disposed inside the rotating shaft. The lower part of the air blowing pipe extends into the interior of the filter element, and multiple air jets are connected to the surface of the air blowing pipe inside the filter element.

[0017] As a further improvement to this technical solution, a rotary joint is provided on the upper part of the air blowing pipe. The stationary end of the rotary joint is fixedly connected to the inner wall of the rotating shaft. A connecting pipe is provided on the rotating end of the rotary joint. The rear side of the connecting pipe passes through the housing, and a first connecting flange is fixedly connected to the end of the connecting pipe. The first connecting flange is used to connect to an external high-pressure air source.

[0018] As a further improvement to this technical solution, when cleaning the filter element while the equipment is stopped, external high-pressure gas enters the air blowing pipe through the connecting pipe and rotary joint, and is ejected at high speed from each jet nozzle. Since the jet nozzle is located inside the filter element, the high-pressure airflow is ejected from the inside out to form a reverse pulse airflow, which can thoroughly flush out the fine dust embedded in the deep folds or fiber gaps of the filter element. This, together with the brushing action of the external soft brush, forms an internal and external synergistic effect, significantly improving the cleaning and regeneration effect of the filter element.

[0019] As a further improvement to this technical solution, the lower part of the filter barrel is connected to a dust discharge pipe, which passes through the housing. A one-way valve is fixedly connected to the surface of the dust discharge pipe. Opening the one-way valve allows the dust collected at the bottom of the filter barrel to be discharged to the outside of the equipment through the dust discharge pipe.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this air compressor with filter cleaning, by setting up a structure in which the dust removal component and the backflushing component cooperate, when the equipment is stopped, the drive motor drives the rotating rod and the soft brush to revolve and rotate around the filter element. At the same time, combined with the reverse pulse airflow sprayed from the inside of the filter element to the outside, the dust adhering to the outer surface of the filter element and the dust deeply embedded inside are removed, which effectively solves the problem that existing scraping cleaning equipment is difficult to clean the deep dust inside the filter element.

[0021] 2. In this type of air compressor with filter cleaning, the axial position of the rotating rod is effectively constrained by the cooperation structure of the limiting ring and the limiting wheel, which prevents the rotating rod from moving axially during rotation and ensures the stability of the mating distance between the soft brush and the filter element surface. This not only improves the uniformity of cleaning, but also avoids the risk of damaging the filter element due to excessive pressure from the brush.

[0022] 3. In this type of air compressor with filter cleaning, a scraper that moves synchronously with the rotating rod is set up to collect and scrape the dust falling into the bottom of the filter barrel to the ash discharge pipe during the cleaning process. With the opening of the one-way valve, the dust can be conveniently discharged without disassembling the equipment or manually cleaning the bottom of the barrel, which improves the convenience of equipment maintenance and the efficiency of cleaning operations. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall side view of the present invention; Figure 3 This is a schematic cross-sectional view of the present invention; Figure 4 This is a schematic diagram showing the overall disassembled structure of the present invention; Figure 5 This is a cross-sectional structural schematic diagram of the filter barrel of the present invention; Figure 6 This is a schematic diagram of the sealing ring structure of the present invention; Figure 7 This is a schematic diagram of the filter element of the present invention; Figure 8 This is a schematic diagram of the connecting tube of the present invention; Figure 9 This is a schematic diagram of the drive motor of the present invention; Figure 10 This is a schematic diagram of the drive gear of the present invention; Figure 11 This is a schematic diagram of the structure of the soft brush of the present invention. Figure 12 For the present invention Figure 11 A magnified structural diagram at point A in the diagram.

[0024] The meanings of the labels in the diagram are as follows: 1. Housing; 2. Housing cover; 3. Heat dissipation groove; 4. Machine body; 5. Support base; 6. Air tank; 7. Controller; 8. Filter barrel; 9. Fixing ring; 10. Sealing ring; 11. Filter element; 12. Air inlet pipe; 13. Conveying pipe; 14. Support box; 15. Drive motor; 16. Drive gear; 17. Driven gear; 18. Rotating shaft; 19. Rotary seal; 20. Drive rotating plate; 21. Rotating rod; 22. Rotating gear; 23. Fixing gear; 24. Fixing rod; 25. Soft brush; 26. Limiting ring; 27. Limiting wheel; 28. Fixing rod; 29. ​​Air blowing pipe; 30. Air jet head; 31. Rotary joint; 32. Connecting pipe; 33. First connecting flange; 34. Air inlet; 35. Fixing plate; 36. Scraper; 37. Ash discharge pipe; 38. One-way valve. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Therefore, the present invention provides an air compressor with filter cleaning function, see [link to relevant documentation]. Figures 1 to 12 As shown, it includes a housing 1, with a cover 2 hinged to the front of the housing 1 for easy inspection and maintenance of the internal equipment. Heat dissipation slots 3 are provided on both sides of the housing 1 to ensure ventilation and heat dissipation during operation. An engine body 4 is located on one side of the upper part of the inner cavity of the housing 1. The engine body 4 serves as the core compression component of the air compressor, and its lower part is fixedly connected to the inner cavity of the housing 1 via a support base 5 to ensure operational stability. A filter and cleaning assembly is located on the rear side of the upper part of the inner cavity of the housing 1 near the engine body 4. This filter and cleaning assembly filters the air entering the engine body 4 and has a self-cleaning function. An air storage tank 6 is fixedly connected to the other side of the upper part of the inner cavity of the housing 1. The air storage tank 6 stores the high-pressure gas compressed by the engine body 4. A controller 7 is located on the upper front side of the housing 1. The controller 7 centrally controls the operating status of each component of the equipment.

[0027] For details, see Figures 4 to 12As shown, the cleaning filter assembly includes a dust removal assembly and a backflushing assembly. The dust removal assembly includes a filter barrel 8, with a fixing ring 9 fixedly connected to the surface of the filter barrel 8. The rear side of the fixing ring 9 is fixedly connected to the inner wall of the housing 1, thereby achieving a stable installation of the filter barrel 8 inside the housing 1. A sealing ring 10 is provided at the upper part of the inner cavity of the filter barrel 8, and a filter element 11 is provided inside the filter barrel 8. The lower part of the filter element 11 is movably connected to the upper part of the inner cavity of the filter barrel 8, and the outer side of the bottom of the surface of the filter element 11 is movably connected to the sealing ring 10. The sealing ring 10 is used to seal between the filter barrel 8 and the filter element 11 to prevent unfiltered air from seeping into the air intake pipe from the gap between them.

[0028] An air inlet pipe 12 is connected to one side of the upper part of the body 4. The upper part of the other end of the air inlet pipe 12 penetrates the inner cavity of the filter barrel 8 and extends into the interior of the filter element 11, so that the clean air filtered by the filter element 11 can enter the body 4 along the air inlet pipe 12 for compression. A conveying pipe 13 is connected to the other side of the lower part of the body 4. The other end of the conveying pipe 13 is connected to the air storage tank 6 for conveying the compressed gas to the air storage tank 6 for storage.

[0029] During operation, external air first enters the inner cavity of the filter barrel 8 through the air inlet 34. Under the negative pressure generated by the suction of the machine body 4, the air passes through the side wall of the filter element 11 and enters the interior of the filter element 11. During this process, dust and impurities in the air are blocked and adhere to the outer surface of the filter element 11. The filtered clean air is then drawn into the interior of the machine body 4 through the air inlet pipe 12 for compression, and finally discharged into the air storage tank 6 through the delivery pipe 13 for later use.

[0030] Further, see Figures 3 to 10 As shown, a support box 14 is fixedly connected to the upper part of the filter barrel 8. A drive motor 15 is provided on the other side of the upper surface of the support box 14. The output shaft of the drive motor 15 passes through the support box 14, and a drive gear 16 is fixedly connected to the output shaft of the drive motor 15. The drive gear 16 is located in the inner cavity of the support box 14. A driven gear 17 is meshed with one side of the drive gear 16. A rotating shaft 18 is fixedly connected to the inner cavity of the driven gear 17. The lower part of the rotating shaft 18 extends into the interior of the filter barrel 8. The connection between the rotating shaft 18 and the filter barrel 8 is made by a rotary seal 19. To ensure the airtightness of the filter barrel 8, a drive rotating plate 20 is fixedly connected to the lower part of the surface of the rotating shaft 18. A rotating rod 21 is provided on the rear side of the inner cavity of the drive rotating plate 20. A rotating gear 22 is fixedly connected to the upper part of the rotating rod 21. A fixed gear 23 is meshed with the front side of the rotating gear 22. Multiple fixed rods 24 are fixedly connected to the upper part of the fixed gear 23. The upper part of the fixed rods 24 is fixedly connected to the inner wall of the filter barrel 8. A soft brush 25 is provided on the lower part of the surface of the rotating rod 21. The soft brush 25 is used to clean the outer surface of the filter element 11.

[0031] During operation, after the air compressor has been running for a period of time, a large amount of dust will adhere to the surface of the filter element 11, causing an increase in air intake resistance. At this time, the operator must first stop the machine body 4 through the controller 7. Only after the equipment has completely stopped can the filter element cleaning program be started. After the cleaning program is started, the controller 7 controls the drive motor 15 to start running. The output shaft of the drive motor 15 drives the drive gear 16 to rotate, and the drive gear 16 in turn drives the driven gear 17 and the rotating shaft 18 to rotate synchronously. The rotational motion of the rotating shaft 18 is transmitted to the drive rotating plate 2. 0. The rotating plate 20 drives the rotating rod 21 to revolve around the filter element 11. At the same time, since the rotating gear 22 on the upper part of the rotating rod 21 meshes with the fixed gear 23 fixed on the inner wall of the filter barrel 8, the rotating gear 22 is forced to rotate during the revolution, which in turn drives the rotating rod 21 and the soft brush 25 to rotate on their own axis while revolving around the filter element 11. This compound motion allows the soft brush 25 to evenly brush all areas of the outer surface of the filter element 11, removing the dust attached to the surface of the filter element 11.

[0032] Among them, see Figure 12 As shown, a limiting ring 26 is fixedly connected to the upper part of the surface of the rotating rod 21. A limiting groove is formed on the surface of the limiting ring 26. Multiple limiting wheels 27 are rolled in the inner cavity of the limiting groove. A fixed rod 28 is rotatably connected to the opposite side of each limiting wheel 27. Each fixed rod 28 is fixedly connected to the drive rotating plate 20. This structure effectively constrains the axial position of the rotating rod 21 by the rolling cooperation of the limiting wheels 27 in the limiting groove, preventing the rotating rod 21 from axially moving during rotation, thereby limiting the rotation of the rotating rod 21.

[0033] During operation, most of the dust swept off by the soft brush 25 falls to the bottom of the filter bucket 8 under gravity. To further improve the cleaning effect, this solution also includes a backflushing component, which includes an air blowing pipe 29. The air blowing pipe 29 is located inside the rotating shaft 18, and its lower part extends into the interior of the filter element 11. Multiple air jets 30 are connected to the surface of the air blowing pipe 29 inside the filter element 11. A rotary joint 31 is provided on the upper part of the air blowing pipe 29. The stationary end of the rotary joint 31 is fixedly connected to the inner wall of the rotating shaft 18. A connecting pipe 32 is provided on the rotating end of the rotary joint 31. The rear side of the connecting pipe 32 penetrates the housing 1, and a first connecting flange 33 is fixedly connected to the end of the connecting pipe 32. The first connecting flange 33 is used to connect to an external high-pressure air source.

[0034] While the dust removal operation is underway, since the machine body 4 has stopped running, the filter bucket 8 is in a state of no negative pressure. At this time, the external high-pressure air source is turned on, and the high-pressure gas enters the air blowing pipe 29 through the connecting pipe 32 and the rotary joint 31. Finally, it is ejected at high speed from each jet nozzle 30. Since the jet nozzle 30 is located inside the filter element 11, the high-pressure airflow is ejected from the inside of the filter element 11 to the outside, forming a reverse pulse airflow. This reverse airflow can completely flush out the fine dust embedded in the deep fiber gaps of the filter element 11, and form a synergistic effect with the brushing action of the external soft brush 25, which significantly improves the cleaning and regeneration effect of the filter element 11.

[0035] In summary, a fixed plate 35 is fixedly connected to the bottom of the rotating rod 21, and a scraper 36 is fixedly connected to the lower part of the fixed plate 35. The lower part of the scraper 36 is in contact with the bottom of the inner cavity of the filter barrel 8. The lower part of the filter barrel 8 is connected to a dust discharge pipe 37, which passes through the housing 1. A one-way valve 38 is fixedly connected to the surface of the dust discharge pipe 37. During the revolution of the rotating rod 21, the scraper 36 moves synchronously against the bottom inner wall of the filter barrel 8, and scrapes the dust deposited at the bottom of the barrel to the dust discharge pipe 37. By opening the one-way valve 38, the accumulated dust can be discharged to the outside of the equipment through the dust discharge pipe 37, thereby effectively solving the problem that existing scraping cleaning equipment is difficult to clean the deep dust inside the filter element and that the cleaning process is easily interfered with by the airflow of the equipment.

Claims

1. An air compressor with filter cleaning, comprising a cabinet (1), characterized in that: The front of the box (1) is hinged with a box cover (2), and heat dissipation slots (3) are opened on both sides of the box (1). An organic body (4) is provided on one side of the upper part of the inner cavity of the box (1). The lower part of the organic body (4) is fixedly connected to the inner cavity of the box (1) through a support base (5). A filter cleaning component is provided on the rear side of the upper part of the inner cavity of the box (1) near the end of the organic body (4). An air storage tank (6) is fixedly connected to the other side of the upper part of the inner cavity of the box (1). A controller (7) is provided on the upper part of the front side of the box (1).

2. An air compressor with filter cleaning according to claim 1, characterized in that: The cleaning filter assembly includes a dust removal assembly and a backwash assembly. The dust removal assembly includes a filter barrel (8). A fixing ring (9) is fixedly connected to the surface of the filter barrel (8). The rear side of the fixing ring (9) is fixedly connected to the inner wall of the housing (1). A sealing ring (10) is provided at the upper part of the inner cavity of the filter barrel (8). A filter element (11) is provided inside the filter barrel (8). The lower part of the filter element (11) is movably connected to the upper part of the inner cavity of the filter barrel (8). The outer side of the bottom of the surface of the filter element (11) is movably connected to the sealing ring (10). The sealing ring (10) is used to seal between the filter barrel (8) and the filter element (11).

3. An air compressor with filter cleaning according to claim 2, characterized in that: The upper part of the body (4) is connected to an air inlet pipe (12), the upper part of the other end of the air inlet pipe (12) penetrates the inner cavity of the filter barrel (8), and the air inlet pipe (12) extends into the interior of the filter element (11). The lower part of the body (4) is connected to a conveying pipe (13), and the other end of the conveying pipe (13) is connected to the air storage tank (6).

4. The air compressor with filter cleaning according to claim 3, characterized in that: A support box (14) is fixedly connected to the upper part of the filter barrel (8). A drive motor (15) is provided on the other side of the upper surface of the support box (14). The output shaft of the drive motor (15) passes through the support box (14). A drive gear (16) is fixedly connected to the output shaft of the drive motor (15). The drive gear (16) is located in the inner cavity of the support box (14). A driven gear (17) is meshed on one side of the drive gear (16). A rotating shaft (18) is fixedly connected to the inner cavity of the driven gear (17).

5. An air compressor with filter cleaning according to claim 4, characterized in that: The lower part of the rotating shaft (18) extends into the interior of the filter barrel (8). The connection between the rotating shaft (18) and the filter barrel (8) is made by a rotary seal (19). A drive rotating plate (20) is fixedly connected to the lower part of the surface of the rotating shaft (18). A rotating rod (21) is provided on the rear side of the inner cavity of the drive rotating plate (20). A rotating gear (22) is fixedly connected to the upper part of the rotating rod (21). A fixed gear (23) is meshed with the front side of the rotating gear (22).

6. An air compressor with filter cleaning according to claim 5, characterized in that: The upper part of the fixed gear (23) is fixedly connected to a plurality of fixed rods (24), the upper part of the fixed rods (24) is fixedly connected to the inner wall of the filter barrel (8), and a soft brush (25) is provided on the lower part of the surface of the rotating rod (21), which is used to clean the filter element (11).

7. An air compressor with filter cleaning according to claim 6, characterized in that: A limiting ring (26) is fixedly connected to the upper part of the surface of the rotating rod (21). A limiting groove is opened on the surface of the limiting ring (26). Multiple limiting wheels (27) are rolled in the inner cavity of the limiting groove. A fixed rod (28) is rotatably connected to the opposite side of each limiting wheel (27). Each fixed rod (28) is fixedly connected to the driving rotating plate (20).

8. The air compressor with filter cleaning of claim 4, wherein: The backflush assembly includes an air pipe (29) disposed inside the rotating shaft (18), the lower part of the air pipe (29) extending into the interior of the filter element (11), and the surface of the air pipe (29) located inside the filter element (11) is connected to a plurality of jet heads (30).

9. An air compressor with filter cleaning according to claim 8, characterized in that: A rotary joint (31) is provided on the upper part of the air blowing pipe (29). The stationary end of the rotary joint (31) is fixedly connected to the inner wall of the rotating shaft (18). A connecting pipe (32) is provided on the rotating end of the rotary joint (31). The rear side of the connecting pipe (32) penetrates the box body (1), and the end of the connecting pipe (32) is fixedly connected to a first connecting flange (33). An air inlet (34) is connected to one side of the filter barrel (8), and the air inlet (34) penetrates the box body (1).

10. The air compressor with filter cleaning of claim 5, wherein: A fixing plate (35) is fixedly connected to the bottom of the rotating rod (21), and a scraper (36) is fixedly connected to the lower part of the fixing plate (35). The lower part of the scraper (36) is in contact with the bottom of the inner cavity of the filter barrel (8). The lower part of the filter barrel (8) is connected to a ash discharge pipe (37). The ash discharge pipe (37) passes through the box body (1), and a one-way valve (38) is fixedly connected to the surface of the ash discharge pipe (37).

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