Water-lubricated oil-free screw air compressor with water quality filtering and self-cleaning functions

Abstract

The utility model discloses a kind of water-lubricated oil-free screw air compressor with water quality filtering self-cleaning function, belong to air compressor technical field. Including base, the top surface of base is equipped with air compressor, gas-liquid separator, water cooler, filtering mechanism, the output end of air compressor and the input end between gas-liquid separator are connected with first pumping member, the output end between gas-liquid separator and the input end of water cooler is connected with second pumping member, filtering mechanism includes the shell installed in the top surface of base, the output end of water cooler and shell are communicated with one-way valve, the inner top of shell is equipped with cylindrical filter screen, the top surface of air compressor is equipped with connecting sleeve by bolt, the bottom surface of connecting sleeve is equipped with spray head, shell and spray head are communicated with first pipeline, the top surface of shell is rotatably connected with water injection pipe by bearing, the top surface of shell is also equipped with driving element, driving element drives water injection pipe rotation, the part of water injection pipe in shell is provided with a plurality of through holes.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, specifically a water-lubricated oilless screw air compressor with water filtration and self-cleaning function. Background Technology

[0002] Water-lubricated oilless screw air compressors are widely used in food processing, pharmaceutical manufacturing, and other fields with extremely high requirements for gas cleanliness because they can achieve lubrication and sealing of the screw meshing parts without the need for lubricating oil. Their working principle involves cooling and lubricating the screw through a circulating water system; the quality of the circulating water directly affects the operational stability of the equipment and the quality of the compressed gas.

[0003] Existing water-lubricated oilless screw air compressors have significant drawbacks in their circulating water systems: impurities in the circulating water easily accumulate on the filter surface, requiring periodic shutdowns for manual cleaning; otherwise, filtration efficiency decreases, water flow resistance increases, leading to insufficient screw lubrication and elevated exhaust temperature. Furthermore, cleaning traditional filters requires disassembling pipelines, which is cumbersome and easily introduces new contaminants, affecting the cleanliness of the compressed gas. Therefore, there is an urgent need for a water-lubricated oilless screw air compressor with self-cleaning water filtration capabilities to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a water-lubricated oilless screw air compressor with water filtration and self-cleaning function to solve the problems mentioned in the background art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0006] A water-lubricated oilless screw air compressor with water filtration and self-cleaning function includes a base. An air compressor, a gas-liquid separator, a water cooler, and a filtration mechanism are mounted on the top surface of the base. A first pumping component is connected between the output end of the air compressor and the input end of the gas-liquid separator, and a second pumping component is connected between the output end of the gas-liquid separator and the input end of the water cooler. The filtration mechanism includes a housing mounted on the top surface of the base. A one-way valve connects the output end of the water cooler and the housing. A cylindrical filter screen is installed on the inner top of the housing. The cylindrical filter screen effectively filters impurities in the circulating water, ensuring the cleanliness of the water entering the air compressor and preventing impurities from affecting screw lubrication and sealing. A connecting sleeve is bolted to the top surface of the air compressor, and a nozzle is mounted on the bottom surface of the connecting sleeve. A first pipe connects the housing and the nozzle. A water injection pipe is rotatably connected to the top surface via a bearing. A driving component is also installed on the top surface of the housing. The driving component drives the water injection pipe to rotate, causing the brush plate to clean the inner wall of the cylindrical filter screen, achieving a self-cleaning function. This eliminates the need for manual cleaning, reducing equipment maintenance time and costs. The portion of the water injection pipe inside the housing has several through holes, allowing cleaning water to be injected into the housing. This, combined with the brush plate, enhances the cleaning effect. Meanwhile, the wastewater after cleaning can be discharged through a drain valve to prevent secondary pollution from impurities. The portion of the water injection pipe inside the housing also has circumferentially distributed fixing sleeves. The side of the fixing sleeves is elastically connected to a brush plate, which contacts the inner wall of the cylindrical filter screen. A drain valve is also connected to the side of the housing. The one-way valve prevents water backflow inside the housing, ensuring the stability of the water circulation system. The nozzle delivers the filtered water to the air compressor through a first pipe, ensuring a continuous supply of lubrication and cooling water.

[0007] Furthermore, the driving component includes a motor mounted on the top surface of the housing. The output end of the motor is connected to a drive gear, and a driven gear is coaxially connected to the outer side of the water injection pipe. The drive gear and the driven gear mesh with each other, and the motor drives the water injection pipe to rotate through gear transmission, ensuring that the brush plate effectively cleans the cylindrical filter screen. Moreover, the radius of the drive gear is smaller than the radius of the driven gear, which can achieve speed reduction and torque increase, making the rotation speed of the water injection pipe moderate, the brush plate cleaning more thoroughly, and avoiding equipment wear caused by excessive rotation speed.

[0008] Furthermore, a groove is provided on the side of the fixed sleeve near the corresponding brush plate, and a slider is installed on the side of the brush plate. The slider slides in the groove and is connected to the groove by a spring. The spring provides continuous elastic force to the brush plate, ensuring that it always fits tightly against the inner wall of the cylindrical filter screen, improving the cleaning effect. Even if the surface of the filter screen is slightly deformed, it can still make close contact. The slider slides in the groove to guide the brush plate, preventing it from deviating during cleaning, ensuring a stable cleaning trajectory, and reducing wear between the brush plate and the fixed sleeve.

[0009] Furthermore, the connection between the one-way valve and the outer shell is located below the cylindrical filter screen, the connection between the first pipe and the outer shell is located on the side of the cylindrical filter screen, and the connection between the drain valve and the outer shell is close to the bottom surface of the outer shell. The one-way valve is connected below the cylindrical filter screen, so that the water entering the outer shell must be filtered through the filter screen before flowing out from the first pipe on the side, ensuring sufficient filtration. The drain valve is close to the bottom surface of the outer shell, which facilitates the complete discharge of impurities deposited at the bottom with the sewage, avoiding the impact of impurity residue on the filtration effect.

[0010] Furthermore, the first pumping component includes a pump installed on the side of the gas-liquid separator. A second conduit connects the input end of the pump to the output end of the air compressor. The output end of the pump is connected to the input end of the gas-liquid separator. The pump provides power for the circulating water to be transported from the air compressor to the gas-liquid separator, ensuring smooth water flow and avoiding water circulation stagnation due to insufficient pressure. The second conduit achieves a sealed connection to prevent water leakage and the entry of external pollutants, ensuring the cleanliness of the circulating water.

[0011] Furthermore, the second pumping component includes a circulating pump installed on the side of the water cooler. A third conduit connects the input end of the circulating pump to the output end of the gas-liquid separator. The output end of the circulating pump is connected to the input end of the water cooler. The circulating pump provides power for transporting water from the gas-liquid separator to the water cooler, ensuring a stable water flow rate and uniform cooling effect. The third conduit achieves a sealed connection to prevent impurities from entering the water during the flow process and maintain the cleanliness of the circulating water.

[0012] Furthermore, the air compressor is an oil-free, water-lubricated screw air compressor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This water-lubricated oilless screw air compressor with water filtration and self-cleaning function effectively solves the problems of manual cleaning of impurities in circulating water in traditional equipment, which is cumbersome and prone to introducing contaminants, through the cooperation of the filtration mechanism and the self-cleaning structure. The cylindrical filter screen can filter impurities in the circulating water, ensuring the cleanliness of the water entering the air compressor. The drive component drives the water injection pipe to rotate, so that the elastically connected brush plate is in close contact with the inner wall of the cylindrical filter screen to clean impurities. With the cleaning water injected through the water injection pipe, the impurities are discharged through the drain valve, avoiding problems such as insufficient screw lubrication and increased exhaust temperature caused by decreased filtration efficiency. At the same time, there is no need to disassemble the pipeline, reducing the risk of introducing contaminants and ensuring the cleanliness of the compressed gas. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional structural schematic diagram of a water-lubricated oilless screw air compressor with water filtration and self-cleaning function disclosed in an embodiment of the present utility model;

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of structure A in the middle;

[0016] Figure 3 This is a second three-dimensional structural diagram of a water-lubricated oilless screw air compressor with water filtration and self-cleaning function disclosed in an embodiment of the present utility model;

[0017] Figure 4 This is a first cross-sectional structural diagram of a water-lubricated oilless screw air compressor with water filtration and self-cleaning function disclosed in an embodiment of the present utility model.

[0018] Figure 5 This is a second cross-sectional structural diagram of a water-lubricated oilless screw air compressor with water filtration and self-cleaning function disclosed in an embodiment of this utility model.

[0019] In the diagram: 1. Base; 2. Air compressor; 3. Gas-liquid separator; 4. Second conduit; 5. Water cooler; 6. Third conduit; 7. Outer shell; 8. Drain valve; 9. First pipe; 10. Connecting sleeve; 11. Motor; 12. Drive gear; 13. Water injection pipe; 14. Driven gear; 15. Pump; 16. Circulating pump; 17. Check valve; 18. Cylindrical filter screen; 19. Fixing sleeve; 20. Brush plate; 21. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 - Figure 5This utility model provides a technical solution: a water-lubricated oilless screw air compressor with water filtration and self-cleaning function, including a base 1. An air compressor 2, a gas-liquid separator 3, a water cooler 5, and a filtration mechanism are mounted on the top surface of the base 1. A first pumping component is connected between the output end of the air compressor 2 and the input end of the gas-liquid separator 3. A second pumping component is connected between the output end of the gas-liquid separator 3 and the input end of the water cooler 5. The filtration mechanism includes a housing 7 mounted on the top surface of the base 1. A one-way valve 17 connects the output end of the water cooler 5 and the housing 7. A cylindrical filter screen 18 is mounted on the inner top of the housing 7. A connecting sleeve 10 is bolted to the top surface of the air compressor 2. A nozzle is mounted on the bottom surface of the connecting sleeve 10. A first pipe 9 connects the housing 7 and the nozzle. A water injection pipe 13 is rotatably connected to the top surface of the housing 7 via a bearing. A driving component is also mounted on the top surface of the housing 7. The driving component drives the water injection pipe 13 to rotate. The portion of the water injection pipe 13 located inside the outer casing 7 has several through holes 21. The portion of the water injection pipe 13 located inside the outer casing 7 also has circumferentially distributed fixing sleeves 19. The side of the fixing sleeves 19 is elastically connected to a brush plate 20. The brush plate 20 is in contact with the inner wall of the cylindrical filter screen 18. The side of the outer casing 7 is also connected to a drain valve 8. After the circulating water is used by the air compressor 2, it is transported by the first pumping component to the gas-liquid separator 3 to separate the gas and liquid. Then it is sent to the water cooler 5 for cooling by the second pumping component. Subsequently, it enters the outer casing 7 through the one-way valve 17. The cylindrical filter screen 18 inside the outer casing 7 filters the circulating water. The filtered water enters the air compressor 2 through the first pipe 9 and the nozzle to achieve recycling. During cleaning, the driving component drives the water injection pipe 13 to rotate. The brush plate 20 is in close contact with the inner wall of the cylindrical filter screen 18 under elastic action and sweeps away impurities. At the same time, the water injection pipe 13 injects clean water through the through holes 21 to rinse. Impurities are discharged with sewage through the drain valve 8.

[0022] As an embodiment of this utility model, the driving component further includes a motor 11 mounted on the top surface of the housing 7. The output end of the motor 11 is connected to a drive gear 12, and the outer side of the water injection pipe 13 is coaxially connected to a driven gear 14. The drive gear 12 and the driven gear 14 are meshed, and the radius of the drive gear 12 is smaller than the radius of the driven gear 14. When the motor 11 is working, the output end drives the drive gear 12 to rotate. The drive gear 12 meshes with the driven gear 14, transmitting power to the water injection pipe 13. Because the radius of the drive gear 12 is smaller, the speed of the driven gear 14 decreases and the torque increases, driving the water injection pipe 13 to rotate stably, so that the brush plate 20 effectively cleans the cylindrical filter screen 18.

[0023] As an embodiment of this utility model, the fixing sleeve 19 is further provided with a sliding groove on the side near the corresponding brush plate 20, and a slider is installed on the side of the brush plate 20. The slider slides in the sliding groove and is connected to the sliding groove by a spring. When the water injection pipe 13 rotates, the brush plate 20 rotates with it and contacts the inner wall of the cylindrical filter screen 18. The elastic force of the spring is transmitted to the brush plate 20 through the slider and the sliding groove, so that it fits tightly against the surface of the filter screen, ensuring that the attached impurities can be effectively removed during the cleaning process.

[0024] As an embodiment of this utility model, the connection between the one-way valve 17 and the outer shell 7 is located below the cylindrical filter screen 18, the connection between the first pipe 9 and the outer shell 7 is located on the side of the cylindrical filter screen 18, and the connection between the drain valve 8 and the outer shell 7 is close to the bottom surface of the outer shell 7. After the circulating water enters from the bottom of the outer shell 7, it flows upward and passes through the cylindrical filter screen 18 for filtration. The filtered clean water flows out from the first pipe 9 on the side. Impurities are intercepted and deposited on the inside of the outer shell 7. When cleaning, the drain valve 8 is opened to discharge the impurities along with the sewage.

[0025] As an embodiment of this utility model, the first pumping component further includes a pump 15 installed on the side of the gas-liquid separator 3. A second conduit 4 is connected between the input end of the pump 15 and the output end of the air compressor 2. The output end of the pump 15 is connected to the input end of the gas-liquid separator 3. When the pump 15 is working, it draws in the gas-liquid mixture discharged from the air compressor 2 through the second conduit 4 and then pumps it to the gas-liquid separator 3 for gas-liquid separation, providing a stable water flow for subsequent cooling and filtration processes.

[0026] As an embodiment of this utility model, the second pumping component further includes a circulation pump 16 installed on the side of the water cooler 5. A third conduit 6 is connected between the input end of the circulation pump 16 and the output end of the gas-liquid separator 3. The output end of the circulation pump 16 is connected to the input end of the water cooler 5. The circulation pump 16 draws in the water separated by the gas-liquid separator 3 through the third conduit 6 and then pumps it to the water cooler 5 for cooling, so that the water temperature drops to a range suitable for the use of the air compressor 2, ensuring lubrication and cooling effects.

[0027] As one embodiment of this utility model, the air compressor 2 is further described as an oil-free water-lubricated screw air compressor.

[0028] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A water-lubricated oilless screw air compressor with water filtration and self-cleaning function, characterized in that, The system includes a base (1), on the top surface of which an air compressor (2), a gas-liquid separator (3), a water cooler (5), and a filter mechanism are mounted. A first pumping component is connected between the output end of the air compressor (2) and the input end of the gas-liquid separator (3), and a second pumping component is connected between the output end of the gas-liquid separator (3) and the input end of the water cooler (5). The filter mechanism includes a housing (7) mounted on the top surface of the base (1), and a one-way valve (17) is connected between the output end of the water cooler (5) and the housing (7). A cylindrical filter screen (18) is mounted on the inner top of the housing (7), and a connecting sleeve (10) is mounted on the top surface of the air compressor (2) by bolts. The bottom surface of the connecting sleeve (10) is equipped with a nozzle, and a first pipe (9) is connected between the outer shell (7) and the nozzle. The top surface of the outer shell (7) is rotatably connected to a water injection pipe (13) via a bearing. The top surface of the outer shell (7) is also equipped with a driving component, which drives the water injection pipe (13) to rotate. The portion of the water injection pipe (13) located inside the outer shell (7) has several through holes (21). The portion of the water injection pipe (13) located inside the outer shell (7) is also circumferentially distributed with a fixing sleeve (19). The side of the fixing sleeve (19) is elastically connected with a brush plate (20). The brush plate (20) is in contact with the inner wall of the cylindrical filter screen (18). The side of the outer shell (7) is also connected to a drain valve (8).

2. The water-lubricated oilless screw air compressor with water filtration and self-cleaning function according to claim 1, characterized in that, The driving component includes a motor (11) mounted on the top surface of the housing (7). The output end of the motor (11) is connected to a drive gear (12). A driven gear (14) is coaxially connected to the outer side of the water injection pipe (13). The drive gear (12) and the driven gear (14) are meshed together, and the radius of the drive gear (12) is smaller than the radius of the driven gear (14).

3. A water-lubricated oilless screw air compressor with water filtration and self-cleaning function according to claim 1, characterized in that, The fixing sleeve (19) has a groove on the side near the corresponding brush plate (20), and a slider is installed on the side of the brush plate (20). The slider slides in the groove and is connected to the groove by a spring.

4. A water-lubricated oilless screw air compressor with water filtration and self-cleaning function according to claim 1, characterized in that, The connection between the one-way valve (17) and the housing (7) is located below the cylindrical filter screen (18), the connection between the first pipe (9) and the housing (7) is located on the side of the cylindrical filter screen (18), and the connection between the drain valve (8) and the housing (7) is close to the bottom surface of the housing (7).

5. A water-lubricated oilless screw air compressor with water filtration and self-cleaning function according to claim 1, characterized in that, The first pumping component includes a pump (15) installed on the side of the gas-liquid separator (3), and a second conduit (4) is connected between the input end of the pump (15) and the output end of the air compressor (2), and the output end of the pump (15) is connected to the input end of the gas-liquid separator (3).

6. A water-lubricated oilless screw air compressor with water filtration and self-cleaning function according to claim 1, characterized in that, The second pumping component includes a circulation pump (16) installed on the side of the water cooler (5), a third conduit (6) connecting the input end of the circulation pump (16) and the output end of the gas-liquid separator (3), and the output end of the circulation pump (16) connecting the input end of the water cooler (5).

7. A water-lubricated oilless screw air compressor with water filtration and self-cleaning function according to claim 1, characterized in that, The air compressor (2) is an oil-free, water-lubricated screw air compressor.

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