A compressor front air oil removal filter

Abstract

The application belongs to the technical field of air compressor filter, in particular to a compressor front air oil removal filter, which comprises a shell, upper and lower ends of the shell are respectively fixedly connected with upper and lower end covers, both sides of the shell are respectively provided with through medium inlets and medium outlets, a partition is fixedly connected in the shell, two compression rings are rotatably connected on the partition, the bottom of each compression ring is fixedly connected with an impeller, an filter cartridge is fixedly connected in each impeller, the high-speed rotation centrifugation of the impeller makes the airflow flow outward from the inside of the filter cartridge, a driving component is arranged below each impeller, and an oil removal cleaning component is arranged in each filter cartridge. The back blowing cleaning mode of synchronous high-speed rotation of the impeller and the filter cartridge is adopted, the static pressure is higher and the effect is more continuous, the air pressure distribution is more uniform in the filter cartridge, the airflow can fully penetrate from the inside of the filter cartridge, and more comprehensive and efficient back blowing cleaning work is realized.

Description

Technical Field

[0001] This invention belongs to the field of air compressor filter technology, specifically a compressor inlet air oil removal filter. Background Technology

[0002] The air compressor intake filter is a key component in the compressed air system. It is mainly used to filter impurities in the air entering the air compressor, protecting internal components such as rotors, cylinders, and valves from damage caused by contaminants such as dust, particulate matter, and moisture. This improves equipment efficiency, extends service life, and ensures the cleanliness of compressed air.

[0003] After long-term use, the air compressor intake filter will accumulate a large amount of dust and particulate impurities on its surface, affecting the filter's filtration efficiency and reducing the air intake volume of the air compressor. This leads to a decrease in the air compressor's working efficiency, so it is necessary to clean the air compressor intake filter regularly. Common cleaning methods include backflushing cleaning, which involves installing a backflushing pipe inside the filter element and blowing from the inside to the outside to remove impurities from the filter element's surface.

[0004] For example, Chinese patent CN223096418U discloses a backflushing self-cleaning device for air compressor filters. This device includes a pressure sensor installed in the suction pipe at the air compressor inlet, connected to a differential pressure transmitter; an air source buffer tank connected to the air compressor's exhaust pipe; an exhaust control valve connected to the outlet of the air source buffer tank; an air delivery pipe connected to the end of the exhaust control valve away from the air source buffer tank, with backflushing nozzles installed on the air delivery pipe, positioned above the air compressor filter cartridge; the differential pressure transmitter and the exhaust control valve are connected to a controller to receive signals from the differential pressure transmitter and control the opening and closing of the exhaust control valve based on the signals. After prolonged use, high-pressure airflow is sprayed from the backflushing nozzles to backflush and clean the filter cartridge.

[0005] However, the aforementioned patents still cannot solve the following problems:

[0006] 1. The above-mentioned patent uses a nozzle to spray high-pressure airflow for backflushing cleaning. In this method, the air pressure of the high-pressure airflow will be depressurized at the upper open end of the filter element, resulting in a small air pressure that actually acts on the filter element and penetrates it for backflushing cleaning. This makes it difficult to efficiently remove impurities. In addition, the air pressure is high near the nozzle and low far from the nozzle, resulting in uneven air pressure distribution and poor cleaning uniformity of the filter element.

[0007] 2. Depending on the usage scenario, fine oil droplets may sometimes be mixed into the airflow during intake. The oil adheres to the filter element and forms oil stains, which can clog the pores of the filter element and reduce its filtration capacity. The aforementioned patent and traditional backflushing cleaning methods are difficult to effectively remove the oil stains adhering to the filter element, affecting the filter's service life and filtration effect.

[0008] 3. Other existing technologies involve spraying degreasing cleaning fluid for degreasing. However, after using this method, the filter element is soaked in the cleaning fluid. The pores of the wet filter element are blocked by the liquid, making it difficult to perform normal filtration. Moreover, working in a wet state will cause dust and other substances to combine with moisture to form mud-like clumps. Therefore, it is necessary to wait for the filter element to dry after cleaning before it can be put back into filtration, which wastes a lot of time and affects the working efficiency of the air compressor. Summary of the Invention

[0009] To overcome the shortcomings of existing technologies, this invention addresses the technical problem of using a centrifugal backflushing cleaning method that involves the synchronous high-speed rotation of the impeller and filter cartridge. Compared to existing nozzle-based backflushing methods, this centrifugal backflushing method offers higher static pressure and more sustained effectiveness. Simultaneously, the air pressure distribution within the filter cartridge is more uniform, allowing the airflow to fully penetrate the cartridge, resulting in a more comprehensive and efficient backflushing cleaning process. By incorporating an injection pipe and nozzle, a degreasing cleaning solution can be sprayed onto the filter cartridge during the high-speed rotation of the impeller and filter cartridge, causing oil stains adhering to the cartridge to peel off. The high-speed centrifugal force of the filter cartridge's rotation and the high static pressure airflow generated by the impeller further enhance the wetting and penetration of the cleaning solution into the cartridge, thereby improving cleaning efficiency. The high efficiency of oil removal and cleaning of the filter cartridge is achieved. After the oil removal and cleaning work is completed and the spraying of the oil removal cleaning fluid stops, the high-speed rotating filter cartridge can quickly throw off the residual cleaning fluid. At the same time, the airflow generated by the impeller rotation continues to flow through the filter cartridge, accelerating the drying process of the filter cartridge and saving the drying time required for the filter cartridge. This allows the device to be quickly put back into the air compressor intake filtration work. By setting up a volute shell and door plate, the airflow flows along the contour of the volute shell and finally concentrates at the opening of the volute shell for discharge. This allows the cleaning fluid thrown off from the filter cartridge to be blown by the airflow, concentrated at the guide slope, and then flow into the lower end cover and finally discharged from the drain pipe. This achieves centralized treatment of waste liquid and avoids the waste liquid from accumulating in the device for a long time, causing oxidation and corrosion of the components.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a compressor inlet oil removal filter, characterized in that the compressor inlet oil removal filter comprises:

[0011] The housing has an upper end cover and a lower end cover fixedly connected to its upper and lower ends, respectively. A medium inlet and a medium outlet are respectively provided on both sides of the housing. A partition is fixedly connected inside the housing. Two pressure rings are rotatably connected to the partition. An impeller is fixedly connected to the bottom of each pressure ring. A filter cartridge is fixedly connected inside each impeller. The impeller rotates at high speed to cause the airflow to flow from the inside of the filter cartridge to the outside.

[0012] Each impeller has a drive component below it, and each filter cartridge has an oil removal and cleaning component inside it.

[0013] Furthermore, the oil removal and cleaning component includes an injection pipe, with an injection pipe located at the axial center of each filter cartridge. Multiple nozzles are evenly distributed on the portion of each injection pipe located inside the filter cartridge. The top of each injection pipe is bent and extends through the side wall of the housing. A pipe seat for supporting the injection pipe is fixedly connected to the upper side of the partition plate.

[0014] Furthermore, two symmetrical volute shells are fixedly connected to the lower side of the partition plate, the openings of the two air intake valves are far apart from each other, each volute shell covers the outer side of the corresponding impeller, and a bracket is fixedly connected inside the lower end cover, the top of the bracket is tightly fitted and abutting against the bottom of the two volute shells.

[0015] Furthermore, a gap is left between the support and the side wall of the partition, and a guide slope inclined towards the gap is provided at the edge of the support at each volute opening. A through sewage pipe is provided at the bottom of the lower end cover, and a sewage valve is fixedly connected to the end of the sewage pipe away from the lower end cover.

[0016] Furthermore, a door panel for controlling the opening and closing of the volute shell is rotatably connected between the partition and the bracket at the corresponding position of the opening of each volute shell. A sealing strip that fits tightly against the door panel is fixedly connected to the inner wall of the shell at each door panel. A cylinder is hinged to the surface of each door panel, and the end of each cylinder away from the door panel is hinged to the inner wall of the shell.

[0017] Furthermore, the end edge of the volute is provided with a smooth abutment end, and the end of the door panel away from its pivot can be tightly fitted and sealed with the abutment end. A guide plate is fixedly connected between the two volutes near the medium inlet.

[0018] Furthermore, a turntable is rotatably connected to the support below each impeller. Each turntable is provided with multiple protrusions, and each impeller has multiple slots at its bottom end. Each impeller and its corresponding turntable are connected by engagement between the protrusions and slots. Each turntable is connected to a first gear through the bottom end of the support. Two meshing second gears are rotatably connected between the two first gears on the bottom side of the support. Each second gear is meshed with the adjacent first gear.

[0019] Furthermore, a gear box covering the first gear and the second gear is fixedly connected to the bottom of the bracket. A gear shaft is driven to the shaft of one of the second gears. A pneumatic motor is fixedly connected to the bottom side of the lower end cover at the corresponding position of the gear shaft. The power output end of the pneumatic motor passes through the lower end cover and is driven to the gear shaft. A bushing is sleeved on the outside of the gear shaft. The bushing is fixedly connected between the gear box and the lower end cover.

[0020] Furthermore, the top of the upper cover is provided with a through air inlet, the top of the air inlet is fixedly connected to an air inlet valve, and the end of the medium outlet is fixedly connected to a check valve.

[0021] Furthermore, a rotating ring is fixedly connected to the upper side of the partition plate at the corresponding position of each pressure ring, and a plug seal is provided between each rotating ring and the pressure ring and between each pressure ring and the partition plate. Each impeller is provided with multiple hoop rings surrounding the outside of the filter cartridge.

[0022] In summary, compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] (1) The centrifugal back-flushing cleaning method adopts the synchronous high-speed rotation of the impeller and the filter cartridge. Compared with the existing nozzle back-flushing method, the centrifugal back-flushing method has higher static pressure and more continuous effect. At the same time, the air pressure distribution in the filter cartridge is more uniform, which allows the airflow to fully penetrate the filter cartridge, thus achieving a more comprehensive and efficient back-flushing cleaning work.

[0024] (2) By setting up injection pipes and nozzles, oil removal cleaning liquid can be sprayed onto the filter cartridge while the impeller and filter cartridge are rotating at high speed for backflushing cleaning. This allows the oil stains attached to the filter cartridge to be peeled off. The centrifugal effect of the high-speed rotation of the filter cartridge and the high static pressure airflow generated by the impeller can make the cleaning liquid more fully wet and penetrate the filter cartridge, thereby improving the oil removal cleaning efficiency of the filter cartridge.

[0025] (3) After the degreasing and cleaning work is completed and the degreasing and cleaning liquid is stopped, the high-speed rotating filter cartridge can quickly throw away the residual cleaning liquid. At the same time, the airflow generated by the impeller rotation continues to flow through the filter cartridge, accelerating the drying process of the filter cartridge and saving the time required for drying the filter cartridge. This allows the device to be quickly put back into the air compressor intake filtration work.

[0026] (4) By setting the volute shell and door plate, the airflow flows along the contour of the volute shell and is finally concentrated at the opening of the volute shell for discharge. This allows the cleaning liquid that is thrown off from the filter cartridge to be blown by the airflow, concentrated at the guide slope, and then flow into the lower end cover and finally discharged from the drain pipe. This achieves centralized treatment of waste liquid and avoids the waste liquid from accumulating and remaining in the device for a long time, causing oxidation and corrosion of the components. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the present patent.

[0028] Figure 2 This is a front view of the patent.

[0029] Figure 3 for Figure 2 A three-dimensional sectional view at point AA.

[0030] Figure 4 for Figure 3 A magnified view of a section at point D.

[0031] Figure 5 for Figure 2 Sectional view at point BB.

[0032] Figure 6 for Figure 5 A magnified view of a section at point E in the middle.

[0033] Figure 7 This is a side view of the present patent.

[0034] Figure 8 for Figure 7 A three-dimensional sectional view at point CC.

[0035] Figure 9 This is a schematic diagram of the structure of this patent.

[0036] Figure 10 This is a schematic diagram of the structure at the impeller and filter cartridge.

[0037] Explanation of reference numerals in the attached drawings: 10. Housing; 11. Upper end cover; 12. Lower end cover; 13. Medium inlet; 14. Medium outlet; 15. Check valve; 16. Air inlet; 17. Air inlet valve; 18. Drain pipe; 19. Drain valve; 20. Baffle plate; 21. Pressure ring; 22. Rotating ring; 23. Plug seal; 24. Impeller; 25. Filter cartridge; 26. Hoop ring; 27. Volute shell; 28. Abutment end; 29. ​​Sealing strip; 30. Door plate; 31. Cylinder; 32. Bracket; 33. Guide slope; 34. Turntable; 35. Slot; 36. Protrusion; 37. Gear box; 38. First gear; 39. Second gear; 40. Gear shaft; 41. Bushing; 42. Pneumatic motor; 43. Pipe seat; 44. Injection pipe; 45. Nozzle; 46. Guide plate. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Example

[0039] like Figure 1-10As shown, a compressor inlet oil removal filter includes a housing 10. An upper end cover 11 is fixedly connected to the top of the housing 10. Two lifting lugs are symmetrically distributed and fixedly connected to the top of the upper end cover 11. A lower end cover 12 is fixedly connected to the bottom of the housing 10. Multiple support legs are evenly distributed and fixedly connected to the bottom side of the lower end cover 12. A medium inlet 13 and a medium outlet 14 are respectively provided on both sides of the housing 10. An inverted L-shaped partition 20 is fixedly connected inside the housing 10. The partition 20 divides the cavities inside the housing 10, the upper end cover 11, and the lower end cover 12 into two chambers. The medium inlet 13 and the medium outlet 14 are respectively connected to the two chambers. Two pressure rings 21 are rotatably connected to the top of the partition 20. An impeller 24 is fixedly connected to the bottom of the two pressure rings 21. A filter cartridge 25 is fixedly connected inside the impeller 24.

[0040] By setting up the filter cartridge 25, the air medium flows through the gap of the impeller 24 and comes into contact with the filter cartridge 25. The filter cartridge 25 filters the air medium, preventing dust and particulate impurities from entering the air compressor and affecting its operation. By driving the impeller 24 and the filter cartridge 25 to rotate at high speed together, a large centrifugal force is generated on the surface of the filter cartridge 25, causing the dust originally attached to the surface of the filter cartridge 25 or the particulate impurities stuck in the folds of the filter cartridge 25 to fall off the filter cartridge 25. At the same time, the high-speed rotation of the impeller 24 centrifuges the surrounding air, thereby generating an airflow that diffuses from the inside of the filter cartridge 25 outward. This centrifugal airflow is used to backflush the filter cartridge 25, accelerating the removal of dust and impurities from the filter cartridge 25 and improving the cleaning effect of the filter cartridge 25.

[0041] The centrifugal backflushing cleaning method, which uses the impeller 24 and filter cartridge 25 to rotate synchronously at high speed, has higher static pressure and more continuous effect compared to the existing nozzle backflushing method. At the same time, the air pressure distribution in the filter cartridge 25 is more uniform, which allows the airflow to fully penetrate the filter cartridge 25, thus achieving a more comprehensive and efficient backflushing cleaning operation.

[0042] like Figure 1-10 As shown, a rotating ring 22 is fixedly connected to the upper side of the partition plate 20 at the corresponding position of each pressure ring 21. A plug seal 23 is provided between each rotating ring 22 and the pressure ring 21 and between each pressure ring 21 and the partition plate 20. Multiple hoop rings 26 are provided on each impeller 24 surrounding the outside of the filter cartridge 25.

[0043] By setting the plug seal 23, a good sealing effect can be provided, preventing unfiltered air from entering the air compressor. At the same time, even when the impeller 24 and the filter cartridge 25 are rotating at high speed, the plug seal 23 can still maintain a stable seal. As a result, the high static pressure airflow can only flow from the inside of the filter cartridge 25 to the outside, thus ensuring the backflushing cleaning effect of the filter cartridge 25. Furthermore, by setting the clamp ring 26, the deformation of the impeller 24 and the filter cartridge 25 can be effectively limited, preventing the impeller 24 and the filter cartridge 25 from deforming under the action of centrifugal force.

[0044] like Figure 1-10 As shown, each filter cartridge 25 has a hollow injection tube 44 at its axial center. Multiple nozzles 45 are evenly distributed on the surface of the portion of each injection tube 44 located inside the filter cartridge 25. Each nozzle 45 communicates with the inside of the injection tube 44. The top of each injection tube 44 is bent and extends out from the side wall of the housing 10. Two tube seats 43 for fixing and supporting the injection tubes 44 are fixedly connected to the partition plate 20.

[0045] By setting up the injection pipe 44 and the nozzle 45, the oil-removing cleaning fluid can be sprayed onto the filter cartridge 25 while the impeller 24 and the filter cartridge 25 are rotating at high speed for backflushing cleaning. This allows the oil stains adhering to the filter cartridge 25 to be peeled off. The centrifugal effect of the high-speed rotation of the filter cartridge 25 and the high static pressure airflow generated by the impeller 24 can make the cleaning fluid more fully wet and penetrate the filter cartridge 25, thereby improving the oil removal and cleaning efficiency of the filter cartridge 25.

[0046] Furthermore, after the degreasing and cleaning work is completed and the spraying of the degreasing and cleaning liquid is stopped, the high-speed rotating filter cartridge 25 can quickly throw off the residual cleaning liquid. At the same time, the airflow generated by the rotation of the impeller 24 continues to flow through the filter cartridge 25, accelerating the drying process of the filter cartridge 25 and saving the drying time required for the filter cartridge 25. This allows the device to be quickly put back into the air compressor intake filtration work.

[0047] like Figure 1-10 As shown, two symmetrical volute shells 27 are fixedly connected to the bottom side of the partition plate 20. Each volute shell 27 covers the outside of the corresponding impeller 24. The blades of the two impellers 24 are tilted in opposite directions and rotate in opposite directions. The openings of the two volute shells 27 are far apart from each other. A gap is left between the support 32 and the side wall of the partition plate 20 to connect to the internal space of the lower end cover 12. The edge of the support 32 is provided with a guide slope 33 that is inclined and points towards the gap at the corresponding position of the opening of each volute shell 27. A through drain pipe 18 is provided at the bottom of the lower end cover 12. A drain valve 19 is fixedly connected to the end of the drain pipe 18 away from the lower end cover 12.

[0048] By setting the volute 27 to guide the airflow generated by the high-speed rotation of the impeller 24, the airflow flows along the contour of the volute 27 and finally concentrates at the opening of the volute 27 for discharge. This allows the cleaning liquid thrown off from the filter cartridge 25 to be blown by the airflow, concentrated at the guide slope 33, and then flow into the lower end cover 12 and finally discharged from the drain pipe 18. This achieves centralized treatment of waste liquid and avoids the waste liquid from accumulating and remaining in the device for a long time, which would cause oxidation and corrosion of the components.

[0049] like Figure 1-10As shown, a door plate 30 for controlling the opening and closing of the volute 27 is rotatably connected between the partition plate 20 and the bracket 32 ​​at the corresponding position of the opening of each volute 27. A sealing strip 29 that fits tightly against the door plate 30 is fixedly connected to the inner wall of the housing 10 at each door plate 30. A cylinder 31 is hinged to the surface of each door plate 30. The end of each cylinder 31 away from the door plate 30 is hinged to the inner wall of the housing 10. An abutment end 28 is provided at the end edge of the volute 27. The end of the door plate 30 away from its pivot can fit tightly against the abutment end 28 for sealing. A guide plate 46 is fixedly connected between the two volute 27 near the medium inlet 13.

[0050] By setting the door plate 30, when the air compressor intake filtration is performed, the door plate 30 is opened, and the outside air can smoothly enter the volute 27 and come into contact with the filter cartridge 25 for filtration. During the backflushing and degreasing cleaning process, the end of the door plate 30 is controlled to abut and close with the contact end 28, so that the waste liquid flowing out of the volute 27 will not leak out and avoid the waste liquid from spreading and polluting the environment.

[0051] The baffle plate 46 guides the airflow when the external air medium enters the inner cavity of the housing 10 through the medium inlet 13, allowing the air to smoothly enter the opening of the volute 27. At the same time, the abutting end 28 makes the edge of the volute 27 smoother, making the airflow smoother when passing through the abutting end 28. Thus, the abutting end 28 and the baffle plate 46 can reduce the vibration generated on the volute 27 when the airflow flows, thereby reducing noise and mechanical vibration.

[0052] like Figure 1-10 As shown, the top of the upper cover 11 is provided with a through air inlet 16, the top of the air inlet 16 is fixedly connected to an air inlet valve 17, and the end of the medium outlet 14 is fixedly connected to a check valve 15.

[0053] By setting the air inlet 16, clean air can be introduced into the housing 10 during backflushing and oil removal cleaning, avoiding secondary pollution of the filter cartridge 25 and the inner cavity of the housing 10. At the same time, the check valve 15 can guide the airflow during normal air compressor intake filtration, allowing the filtered air medium to smoothly enter the air compressor. When cleaning, it can close the airflow passage to prevent external airflow from flowing back into the inner cavity of the housing 10 from the medium outlet 14, causing secondary pollution.

[0054] like Figure 1-10As shown, a turntable 34 is rotatably connected to the support 32 below each impeller 24. Each turntable 34 has multiple protrusions 36, and each impeller 24 has multiple slots 35 at its bottom. Each impeller 24 and its corresponding turntable 34 are connected via the engagement of the protrusions 36 and slots 35. A first gear 38 is connected to each turntable 34 through the bottom of the support 32. Two meshing second gears 39 are rotatably connected to the bottom of the support 32 between the two first gears 38. Each second gear 39 is connected to its adjacent... The first gear 38 is engaged in a transmission connection. The bottom of the bracket 32 ​​is fixedly connected to a gear box 37 that covers the first gear 38 and the second gear 39. The shaft of one of the second gears 39 is connected to a gear shaft 40. A pneumatic motor 42 is fixedly connected to the bottom side of the lower end cover 12 at the corresponding position of the gear shaft 40. The power output end of the pneumatic motor 42 passes through the lower end cover 12 and is connected to the gear shaft 40 in a transmission connection. A bushing 41 is sleeved on the outside of the gear shaft 40. The bushing 41 is fixedly connected between the gear box 37 and the lower end cover 12.

[0055] By setting up a turntable 34 and connecting the turntable 34 and the impeller 24 through the engagement of the slot 35 and the protrusion 36, the impeller 24 and the turntable 34 can be easily disassembled and installed, which facilitates the subsequent maintenance and replacement of the filter cartridge 25. The first gear 38 and the second gear 39 can ensure that the two impellers 24 can rotate stably in opposite directions at the same speed.

[0056] By setting up the gear box 37, the first gear 38 and the second gear 39 can be covered, preventing waste liquid or impurities from entering the tooth gap of the first gear 38 and the second gear 39 and affecting their normal operation. At the same time, the gear box 37 can store grease, thereby playing a lubricating role for the first gear 38 and the second gear 39.

[0057] Furthermore, the bushing 41 being fitted onto the outside of the gear shaft 40 prevents the gear shaft 40 from contacting the waste liquid, thus avoiding oxidation and corrosion. In addition, the drive components of this device are located below the main body, ensuring that each drive component does not come into contact with the clean air filtered by the filter cartridge 25, preventing grease leakage from the gear box 37 or bushing 41 from causing secondary pollution to the filtered air medium.

[0058] In this embodiment, initially, the check valve 15 of this patent is connected to the air compressor inlet, the medium inlet 13 can be directly connected to the outside or connected to the air intake pipe, the air intake valve 17 is connected to the clean air intake pipe, and the drain valve 19 is connected to the drain pipe. At this time, each cylinder 31 extends outward so that the door plate 30 is in the open state, the air intake valve 17 and the drain valve 19 are both in the closed state, and the end of the liquid injection pipe 44 that extends out of the housing 10 is connected to the liquid supply pipe.

[0059] When the air compressor intake filtration is performed, a negative pressure is generated at the air compressor, which causes outside air to enter the housing 10 through the medium inlet 13. The airflow is guided by the guide plate 46 into the volute housing 27, and finally flows through the gap of the impeller 24 to contact the filter cartridge 25. The airflow flows from the outside of the filter cartridge 25 into the filter cartridge 25, while the dust and particulate impurities mixed in the airflow are intercepted and filtered by the filter cartridge 25. The filtered air finally flows through the medium outlet 14 and enters the air compressor through the check valve 15, thus realizing the air compressor intake filtration.

[0060] When the filter cartridge 25 needs to be backflushed for cleaning after a long period of operation, the air compressor is turned off to stop it from drawing in air. The check valve 15 closes naturally to prevent outside air from flowing back into the medium outlet 14. At this time, the pneumatic motor 42 is started. Through the meshing transmission of the first gear 38 and the second gear 39, the two impellers 24 are driven to rotate at high speed with the corresponding filter cartridges 25. When the cylinder 31 retracts, the door plate 30 closes, and the air inlet valve 17 and the drain valve 19 are opened at the same time.

[0061] The high-speed rotation generates a large centrifugal force on the surface of the filter cartridge 25, causing dust originally attached to the surface of the filter cartridge 25, or particulate impurities stuck in the folds of the filter cartridge 25, to detach from the filter cartridge 25. At the same time, the high-speed rotation of the impeller 24 centrifuges the surrounding air, and clean air continuously enters from the air inlet 16, thereby generating an airflow that diffuses from the inside of the filter cartridge 25 outward. This centrifugal airflow is then used to backflush the filter cartridge 25, accelerating the removal of dust and impurities from the filter cartridge 25 and improving the cleaning effect of the filter cartridge 25.

[0062] At the same time, high-pressure degreasing and cleaning fluid is injected into the injection pipe 44. The cleaning fluid is then atomized and sprayed onto the filter cartridge 25 from the nozzle 45. Under the combined action of centrifugal force and centrifugal airflow, the cleaning fluid fully wets the filter cartridge 25, peeling off the oil stains attached to the filter cartridge 25. The waste liquid is discharged from the opening of the volute 27 along the contour of the centrifugal airflow and the volute 27. Under the action of gravity, it flows down the guide slope 33 to the drain pipe 18 and the drain valve 19 to discharge the waste liquid.

[0063] Once the oil stains have been fully removed, stop spraying the cleaning solution. The impeller 24 and filter cartridge 25 continue to rotate at high speed. The waste liquid remaining on the surface of the filter cartridge 25 is thrown off by centrifugal force. At the same time, the centrifugal airflow flows through the filter cartridge 25 to accelerate the drying process of the filter cartridge 25. After the filter cartridge 25 reaches a dry state that meets the requirements for filtration, turn off the pneumatic motor 42 so that the impeller 24 and filter cartridge 25 stop rotating. Open the door panel 30 again and close the air inlet valve 17 and the drain valve 19 to resume the air compressor intake filtration operation. Example

[0064] Depending on the application scenario, the gas medium compressed by the air compressor may vary. It may be used to compress chemical gases such as hydrogen and chlorine. When spraying degreasing and cleaning agents, the chemical gas medium remaining in the device may react with the cleaning agent, causing pollution of the gas medium or even causing violent reactions that lead to corrosion or even cracking of the device.

[0065] When cleaning under conditions where residual chemical gases are present, first control 30 to close to prevent external chemical gases from continuing to enter 27, and 15 to seal 14 to prevent residual chemical gases from the air compressor end from flowing back in, thus forming a relatively closed space inside 10.

[0066] At this point, 42 is first started to drive 24 to rotate at high speed to form an airflow. 17 is opened so that clean air is continuously introduced into 10 through 16. 19 is then opened, and the airflow formed by 24 will continuously dilute the residual chemical gas and discharge it from 18 until the concentration of chemical gas in 10 is reduced to a safe range. During this process, the centrifugal airflow generated by 24 simultaneously backflushes and cleans 25.

[0067] After the concentration of residual chemical gas in 10 drops to a safe range, cleaning agent is introduced into 44 to degrease and clean 25. The waste liquid flows into 12 and is discharged through 18. Once the oil stains on the surface of 25 are basically removed, the spraying of cleaning agent is stopped. Then, 24 is driven to rotate until 25 is dry again, thus completing a safe and efficient backflushing degreasing and cleaning operation.

[0068] The aforementioned check valve 15, intake valve 17, drain valve 19, cylinder 31, and pneumatic motor 42 are mature existing technologies. The structures in the attached drawings are only for illustration and will not be described in detail here.

[0069] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0070] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0071] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A compressor inlet oil removal filter, characterized in that, The compressor inlet air oil removal filter includes: The housing (10) has an upper end cover (11) and a lower end cover (12) fixedly connected to its upper and lower ends respectively. The housing (10) has a through medium inlet (13) and a medium outlet (14) on its two sides respectively. The housing (10) has a partition (20) fixedly connected inside. The partition (20) has two pressure rings (21) rotatably connected to it. Each pressure ring (21) has an impeller (24) fixedly connected to its bottom. Each impeller (24) has a filter cartridge (25) fixedly connected inside. The impeller (24) rotates at high speed to centrifuge and cause the airflow to flow from the inside of the filter cartridge (25) to the outside. Each impeller (24) is provided with a drive component below it, and each filter cartridge (25) is provided with an oil removal and cleaning component. The oil removal and cleaning component includes an injection pipe (44). An injection pipe (44) is provided at the axial center of each filter cartridge (25). Multiple nozzles (45) are evenly distributed on the portion of each injection pipe (44) located inside the filter cartridge (25). The top end of each injection pipe (44) is bent and passes through the side wall of the housing (10). A pipe seat (43) for supporting the injection pipe (44) is fixedly connected to the upper side of the partition plate (20). Two symmetrical volute shells (27) are fixedly connected to the lower side of the partition (20). The openings of the two volute shells (27) are far apart from each other. Each volute shell (27) covers the outside of the corresponding impeller (24). A bracket (32) is fixedly connected inside the lower end cover (12). The top of the bracket (32) is tightly fitted and abuts against the bottom of the two volute shells (27). A gap is left between the support (32) and the side wall of the partition (20). The edge of the support (32) is provided with a guide slope (33) that slopes towards the gap at the opening of each volute (27). A through drain pipe (18) is provided at the bottom of the lower end cover (12). A drain valve (19) is fixedly connected to the end of the drain pipe (18) away from the lower end cover (12). The partition (20) and the bracket (32) are rotatably connected at the corresponding position of the opening of each volute (27) to a door plate (30) for controlling the opening and closing of the volute (27). A sealing strip (29) that fits tightly against the door plate (30) is fixedly connected to the inner wall of the housing (10) at each door plate (30). A cylinder (31) is hinged to the surface of each door plate (30). The end of each cylinder (31) away from the door plate (30) is hinged to the inner wall of the housing (10). The top of the upper cover (11) is provided with a through air inlet (16), the top of the air inlet (16) is fixedly connected to an air inlet valve (17), and the end of the medium outlet (14) is fixedly connected to a check valve (15).

2. The compressor inlet oil removal filter according to claim 1, characterized in that, The end edge of the volute (27) is provided with a smooth abutment end (28), and the end of the door panel (30) away from its pivot can be tightly fitted and sealed with the abutment end (28). A guide plate (46) is fixedly connected between the two volutes (27) on the side near the medium inlet (13).

3. The compressor inlet oil removal filter according to claim 1, characterized in that, A turntable (34) is rotatably connected to the bracket (32) below each impeller (24). Each turntable (34) is provided with multiple protrusions (36). Each impeller (24) is provided with multiple slots (35) at its bottom end. Each impeller (24) and the corresponding turntable (34) are connected by engagement of the protrusions (36) and the slots (35). Each turntable (34) is connected by a first gear (38) through the bottom end of the bracket (32). Two meshing second gears (39) are rotatably connected between the two first gears (38) on the bottom side of the bracket (32). Each second gear (39) is meshed with the adjacent first gear (38) for transmission.

4. The compressor inlet oil removal filter according to claim 3, characterized in that, The bottom of the bracket (32) is fixedly connected to a gear box (37) covering the first gear (38) and the second gear (39). The shaft of the second gear (39) is connected to a gear shaft (40). A pneumatic motor (42) is fixedly connected to the bottom side of the lower end cover (12) at the position corresponding to the gear shaft (40). The power output end of the pneumatic motor (42) passes through the lower end cover (12) and is connected to the gear shaft (40). A bushing (41) is sleeved on the outside of the gear shaft (40). The bushing (41) is fixedly connected between the gear box (37) and the lower end cover (12).

5. The compressor inlet oil removal filter according to claim 1, characterized in that, A rotating ring (22) is fixedly connected to the upper side of the partition (20) at the corresponding position of each pressure ring (21). A plug seal (23) is provided between each rotating ring (22) and the pressure ring (21) and between each pressure ring (21) and the partition (20). A plurality of hoop rings (26) are provided on each impeller (24) surrounding the outside of the filter cartridge (25).

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