Integrated oil-gas separation and cooling air compressor
By integrating the oil-gas separator, oil-gas cooler, and air compressor body, and optimizing the oil circuit connection, the problem of low integration rate of traditional screw air compressors is solved, achieving efficient oil-gas separation and cooling, and improving the operational reliability and assembly efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN KLUB COMPRESSOR CO LTD
- Filing Date
- 2026-03-27
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional screw air compressors typically use separate modules for oil-gas separation and cooling systems, resulting in low integration rates. They require external pipeline connections, increasing the number of pipeline joints and the risk of leakage. Furthermore, the long flow path leads to high flow resistance and pressure loss, making assembly complex and maintenance inconvenient.
The oil-gas separator, oil-gas cooler, and air compressor body are integrated on the same base, and the oil circuit connection is optimized to form a short-distance modular internal oil circuit circulation, reducing reliance on external pipelines. Sleeves, booster plates, and multi-layer metal filters are used to improve separation efficiency, and the integrated design simplifies the assembly process.
It reduces the number of pipe joints and leak points, shortens the flow path, reduces flow resistance and pressure loss, improves the compactness and ease of maintenance of the equipment, and enhances operational reliability and production efficiency.
Smart Images
Figure CN121993413A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air compressor technology, and in particular to an integrated oil-gas separation and cooling air compressor. Background Technology
[0002] Screw air compressors, as an important industrial power source, are widely used in manufacturing, chemical, pharmaceutical, food and other fields. Their working principle involves meshing male and female rotors to compress air, while lubricating oil is injected for sealing, cooling and lubrication, thereby generating a high-temperature, high-pressure oil-air mixture. This mixture then undergoes efficient oil-air separation and thorough cooling before being output as clean, low-temperature compressed air.
[0003] In traditional screw air compressor designs, the oil-gas separation system and the cooling system are usually treated as relatively independent functional modules and connected through external pipelines, resulting in low integration. Therefore, this application proposes an integrated oil-gas separation and cooling air compressor. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the purpose of this application is to provide an integrated oil-gas separation and cooling air compressor to solve the above-mentioned technical problems.
[0005] The above-mentioned objective of this application is achieved through the following technical solution: an integrated oil-gas separation and cooling air compressor, including a base, an oil-gas cooler disposed on the upper end of the base, an oil-gas separator, an air compressor body, and a filter mounting base; The air compressor body is provided with an air inlet, an oil inlet, and an oil-gas outlet. The oil vapor cooler is fixedly provided with an oil vapor outlet and an oil vapor inlet. The oil-gas separator is fixedly equipped with an oil-gas inlet, an oil outlet, and a compressed air outlet. The filter mounting base is also equipped with an oil-gas filter and an oil filter. The oil-gas separator is fixedly connected to the upper end of the oil-gas separator. An air compressor body is also installed on the oil-gas separator. The output end of the drive motor is fixedly connected to the air compressor body. The oil-gas output port is connected to the oil-gas input port. The oil output port is connected to the oil-gas inlet port. The oil-gas outlet port and the oil inlet port are connected through the filter mounting base.
[0006] By adopting the above technical solution, the oil-gas separator, oil-gas cooler, and air compressor body are integrated and installed on the same base. The oil circuit connection method is optimized, eliminating the need for long-distance connections between the oil-gas separation system and the cooling system via traditional external pipelines. Instead, a short-distance, modular internal oil circuit circulation is formed. This structural layout effectively reduces the machine's dependence on external pipelines, decreases the number of pipeline joints and potential leakage points, and shortens the flow path of the oil-gas mixture, reducing flow resistance and pressure loss. Furthermore, the integrated design simplifies assembly processes, improves the compactness and space utilization of the overall structure, and facilitates maintenance and operation, thereby enhancing equipment reliability and production assembly efficiency.
[0007] Furthermore, the oil-gas separator is provided with mounting holes and oil injection holes on its side, and a mounting cover is also installed on one side of the oil-gas separator, on which a level gauge is fixedly installed.
[0008] By adopting the above technical solution, this application provides an installation hole and an oil filling hole on the side of the oil-gas separator, and installs an installation cover on one side, with a level gauge fixedly mounted on the installation cover. This structure allows for easy replenishment of lubricating oil into the system through the oil filling hole, provides an access point for maintenance of internal components, and allows the level gauge to visually display the lubricating oil level, enabling operators to monitor the oil level in real time and ensure that the lubricating oil is within a reasonable range, thereby guaranteeing the normal operation and lubrication effect of the air compressor system.
[0009] Furthermore, the oil-gas separator is provided with a sleeve inside, and multiple sets of strip-shaped through holes are provided on the outer side of the sleeve. Threaded grooves are provided on the outer side of the strip-shaped through holes, and multiple sets of threaded grooves are provided and evenly distributed on the sleeve.
[0010] By adopting the above technical solution, this application includes a sleeve inside the oil-gas separator. Multiple sets of strip-shaped through holes are formed on the outer side of the sleeve, and threaded grooves are formed on the outer side of the strip-shaped through holes. These threaded grooves are multiple sets and evenly distributed on the sleeve. With this structure, after the oil-gas mixture enters the sleeve, the strip-shaped through holes allow for uniform distribution and initial separation of the oil and gas, while the threaded grooves guide the oil and gas along a spiral path, utilizing centrifugal force to enhance the oil-gas separation effect. Simultaneously, the evenly distributed multiple sets of structures improve separation efficiency and reduce the loss of lubricating oil discharged with compressed air, thereby improving the thoroughness of oil-gas separation and the stability of system operation.
[0011] Furthermore, the threaded groove is also provided with an auxiliary plate fixedly connected to the sleeve, and the auxiliary plate is provided in multiple sets and evenly distributed in the threaded groove.
[0012] By adopting the above technical solution, an auxiliary plate is fixedly connected to the sleeve in the threaded groove. Multiple sets of auxiliary plates are evenly distributed in the threaded groove. Through this structure, the auxiliary plates can generate additional turbulence and obstruction on the oil-gas mixture rotating along the threaded groove, increasing the contact time and collision probability between the oil and gas and the inner wall of the sleeve. This allows the lubricating oil to be separated more effectively from the airflow and flow back to the bottom of the tank along the threaded groove, thereby further improving the oil-gas separation efficiency, reducing the oil content in the compressed air, and improving the cleanliness of the output gas.
[0013] Furthermore, the filter mounting base is provided with an oil supply hole that communicates with the oil chamber of the oil-gas filter, and the screw air compressor body is provided with an oil return hole that communicates with the oil supply hole.
[0014] By adopting the above technical solution, an oil inlet hole communicating with the oil chamber of the oil-gas filter is provided on the filter mounting base, and an oil return hole communicating with the oil inlet hole is provided on the screw air compressor body. Through this structure, the lubricating oil separated by the oil-gas filter can be directly returned to the main unit through the oil inlet hole and the oil return hole, without the need for an external oil return pipeline. This shortens the oil return path, reduces the number of joints and the risk of leakage, while ensuring that the lubricating oil can flow back to the main unit for recycling in a timely and smooth manner, thus improving the system's integration and operational reliability.
[0015] Furthermore, the air inlet is equipped with an air intake check valve, and the air intake check valve is also equipped with an oil storage box. The filter mounting base is equipped with a vent hole that communicates with the air chamber of the oil-gas filter, and the oil storage box is connected to the vent hole.
[0016] By adopting the above technical solution, an intake check valve is installed at the air inlet, and an oil reservoir is installed on the intake check valve. The filter mounting base has a vent hole that communicates with the air chamber of the oil-gas filter, and the oil reservoir is connected to the vent hole. With this structure, when the air compressor is unloaded or stopped, the compressed air and a small amount of lubricating oil remaining in the air chamber of the oil-gas filter can be discharged into the oil reservoir through the vent hole. The intake check valve can prevent backflow of gas, and the oil reservoir temporarily collects the discharged oil, avoiding direct discharge of oil to the outside and causing pollution. At the same time, it reduces the load when restarting after shutdown, and improves the cleanliness and operational stability of the system.
[0017] Furthermore, the outer side of the sleeve is provided with a multi-layer metal filter screen connected to the inner side of the tank.
[0018] In summary, this application includes the following beneficial technical effects: by integrating the oil-gas separator, oil-gas cooler, and air compressor body onto the same base and optimizing the oil circuit connection method, the oil-gas separation system and cooling system form a short-distance, modular internal oil circuit circulation, reducing dependence on external pipelines, reducing the number of pipeline joints and potential leakage points, shortening the flow path of the oil-gas mixture, reducing flow resistance and pressure loss, simplifying the assembly process, improving the compactness and space utilization of the overall structure, facilitating maintenance and operation, and improving the reliability of equipment operation and production assembly efficiency.
[0019] By setting mounting holes, oil filling holes, mounting covers, and level gauges on the side of the oil-gas separator, it is convenient to replenish lubricating oil into the system, provide operating openings for the maintenance of internal components, and visually display the lubricating oil level in the tank. This allows operators to monitor the oil level in real time, ensuring that the lubricating oil is within a reasonable range, thereby guaranteeing the normal operation and lubrication effect of the air compressor system. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure in the embodiment; Figure 2 In the embodiments Figure 1 Another perspective structural diagram; Figure 3 This is a top view of the overall structure in the embodiment; Figure 4 This is a schematic diagram of the internal structure of the oil-gas separator in the embodiment.
[0021] Reference numerals: 1. Base; 2. Oil-vapor cooler; 21. Oil-vapor outlet; 22. Oil-vapor inlet; 3. Filter mounting base; 31. Oil-gas filter; 32. Oil filter; 33. Oil inlet; 34. Oil return outlet; 4. Oil-vapor separator; 40. Mounting hole; 400. Oil filling hole; 41. Oil outlet; 42. Oil-vapor inlet; 43. Compressed air outlet; 44. Mounting cover; 45. Level gauge; 46. Sleeve; 47. Through hole; 48. Threaded groove; 49. Booster plate; 5. Drive motor; 6. Air compressor body; 61. Oil-vapor outlet; 62. Oil inlet; 63. Air inlet; Detailed Implementation
[0022] The present application will be further described in detail below with reference to the accompanying drawings.
[0023] Example, refer to Figures 1-4 An integrated oil-gas separation and cooling air compressor includes a base 1, an oil-gas cooler 2 disposed on the upper end of the base 1, an oil-gas separator 4, an air compressor body 6, and a filter mounting base 3. The air compressor body 6 is provided with an air inlet 63, an oil inlet 62 and an oil-gas outlet 61; The oil-vapor cooler 2 is fixedly provided with an oil-vapor outlet 21 and an oil-vapor inlet 22; The oil-gas separator 4 is fixedly equipped with an oil-gas inlet 42, an oil outlet 41, and a compressed air outlet 43; The filter mounting base 3 is also equipped with an oil-gas filter 31 and an oil filter 32. The oil-gas separator 4 is fixedly connected to the upper end of the oil-gas separator 4. The oil-gas separator 4 is also equipped with an air compressor body 6. The output end of the drive motor 5 is fixedly connected to the air compressor body 6. The oil-gas output port 61 is connected to the oil-gas input port 42. The oil output port 41 is connected to the oil-gas inlet port 22. The oil-gas outlet port 21 and the oil inlet port 62 are connected through the filter mounting base 3.
[0024] By integrating the oil-gas cooler 2, oil-gas separator 4, filter mounting base 3, oil-gas filter 31, oil filter 32, and air compressor body 6 onto the same base 1, and optimizing the oil circuit connection, the oil-gas separation system, filtration system, and cooling system no longer require long-distance connections via traditional external pipelines. Instead, they form a short-distance, modular internal oil circuit circulation. The lubricating oil separated by the oil-gas separator 4 enters the oil-gas cooler 2 through the oil outlet 41, and after cooling, returns directly to the oil inlet 62 of the air compressor body 6. Simultaneously, the oil-gas filter 31 and oil filter 32 perform fine filtration of compressed air and lubricating oil, respectively, ensuring the cleanliness of the output gas and the lubricating oil. This structural layout effectively reduces the machine's dependence on external pipelines, reduces the number of pipeline joints and potential leakage points, shortens the flow path of the oil-gas mixture, and reduces flow resistance and pressure loss. Furthermore, the integrated design simplifies the assembly process, improves the compactness and space utilization of the overall structure, facilitates maintenance and operation, and thus enhances the reliability of equipment operation and production assembly efficiency.
[0025] The oil-gas separator 4 is also provided with a mounting hole 40 and an oil filling hole 400 on its side. A mounting cover 44 is also installed on one side of the oil-gas separator 4, and a liquid level gauge 45 is fixedly installed on the mounting cover 44.
[0026] In this application, an installation hole 40 and an oil filling hole 400 are provided on the side of the oil-gas separator 4, and an installation cover 44 is installed on one side, with a level gauge 45 fixedly installed on the installation cover 44. Through this structure, the oil filling hole 400 facilitates the replenishment of lubricating oil into the system, the installation cover 44 provides an access point for the maintenance of components inside the tank, and the level gauge 45 provides a direct view of the lubricating oil level in the tank, allowing operators to monitor the oil level in real time and ensure that the lubricating oil is within a reasonable range, thereby guaranteeing the normal operation and lubrication effect of the air compressor system.
[0027] The oil-gas separator 4 is equipped with a sleeve 46 inside. Multiple sets of strip-shaped through holes 47 are opened on the outside of the sleeve 46. Threaded grooves 48 are opened on the outside of the strip-shaped through holes 47 and are evenly distributed on the sleeve 46.
[0028] In this application, a sleeve 46 is provided inside the oil-gas separator 4. Multiple sets of strip-shaped through holes 47 are formed on the outer side of the sleeve 46, and threaded grooves 48 are formed on the outer side of the strip-shaped through holes 47. These threaded grooves 48 are multiple and evenly distributed on the sleeve 46. With this structure, after the oil-gas mixture enters the sleeve 46, the strip-shaped through holes 47 allow for uniform distribution and initial separation of the oil and gas. The threaded grooves 48 guide the oil and gas along a spiral path, utilizing centrifugal force to enhance the oil-gas separation effect. Simultaneously, the evenly distributed multiple sets of structures improve separation efficiency and reduce the loss of lubricating oil discharged with compressed air, thereby improving the thoroughness of oil-gas separation and the stability of system operation.
[0029] The threaded groove 48 is also provided with an auxiliary plate 49 fixedly connected to the sleeve 46. Multiple sets of auxiliary plates 49 are provided and evenly distributed in the threaded groove 48.
[0030] An auxiliary plate 49 is fixedly connected to the sleeve 46 in the threaded groove 48. Multiple sets of auxiliary plates 49 are evenly distributed in the threaded groove 48. Through the above structure, the auxiliary plate 49 can generate additional turbulence and obstruction effect on the oil-gas mixture rotating along the threaded groove 48, increasing the contact time and collision probability between the oil and gas and the inner wall of the sleeve 46. This allows the lubricating oil to be separated more effectively from the airflow and flow back to the bottom of the tank along the threaded groove 48, thereby further improving the oil-gas separation efficiency, reducing the oil content in the compressed air, and improving the cleanliness of the output gas.
[0031] The filter mounting base 3 is provided with an oil delivery hole 33 that communicates with the oil chamber of the oil-gas filter 31, and the screw air compressor body 6 is provided with an oil return hole 34 that communicates with the oil delivery hole 33.
[0032] The filter mounting base 3 is provided with an oil inlet 33 that communicates with the oil chamber of the oil-gas filter 31, and the screw air compressor body 6 is provided with an oil return hole 34 that communicates with the oil inlet 33. Through the above structure, the lubricating oil separated by the oil-gas filter 31 can be directly returned to the main unit through the oil inlet 33 and the oil return hole 34 without the need for an external oil return pipeline, which shortens the oil return path, reduces the number of joints and the risk of leakage, and ensures that the lubricating oil can be returned to the main unit for recycling in a timely and smooth manner, thereby improving the system integration and operational reliability.
[0033] The air inlet 63 is equipped with an air intake check valve, and an oil storage box is also provided on the air intake check valve. The filter mounting base 3 is provided with a vent hole that communicates with the air chamber of the oil and gas filter 31, and the oil storage box is connected to the vent hole.
[0034] An intake check valve is provided at the air inlet 63, and an oil reservoir is installed on the intake check valve. The filter mounting base 3 has a vent hole communicating with the air chamber of the oil-gas filter 31, and the oil reservoir is connected to this vent hole. Through this structure, when the air compressor is unloaded or stopped, the compressed air and a small amount of lubricating oil remaining in the air chamber of the oil-gas filter 31 can be discharged into the oil reservoir through the vent hole. The intake check valve prevents backflow of gas, and the oil reservoir temporarily collects the discharged oil, preventing direct discharge of oil to the outside and causing pollution. It also reduces the load during restart after shutdown, improving the cleanliness and operational stability of the system. A multi-layer metal filter screen is installed on the outside of the sleeve 46, connected to the inside of the tank.
[0035] Specific implementation process: After the air compressor starts, the drive motor 5 drives the air compressor body 6 to rotate. Air enters the main unit through the air inlet 63, and lubricating oil enters the main unit through the oil inlet 62, mixing with the air to form a high-temperature, high-pressure oil-air mixture. This mixture is discharged from the main unit's oil-air outlet 61 and enters the oil-air separator 4 through the oil-air inlet 42.
[0036] After entering the separator, the oil-gas mixture first enters the sleeve 46, where large oil droplets are initially intercepted by a multi-layer metal filter. It then distributes evenly to the outside of the sleeve 46 through the strip-shaped through-holes 47. Guided by the threaded grooves 48, the oil-gas mixture rotates and flows along a spiral path. Centrifugal force causes the lubricating oil to adhere to the inner wall of the sleeve 46. Simultaneously, the evenly distributed assist plates 49 further turbulent the flow, increasing the probability of oil-gas collision and allowing the lubricating oil to separate more efficiently and flow back to the bottom of the tank along the threaded grooves 48. The separated compressed air enters the air chamber of the oil-gas filter 31, undergoes fine filtration, and is then output as clean air through the filter mounting base 3.
[0037] The separated lubricating oil accumulates at the bottom of the tank, flows out through the oil outlet 41, and enters the oil vapor inlet 22 of the oil vapor cooler 2. After cooling, it returns from the oil vapor outlet 21 to the oil inlet 62 of the main unit, completing the oil circulation. At the same time, a small amount of lubricating oil accumulated at the bottom of the air chamber of the oil vapor filter 31 returns directly to the main unit through the oil supply hole 33 and the oil return hole 34, without the need for external pipelines.
[0038] When the air compressor is unloaded or shut down, the residual compressed air and a small amount of lubricating oil in the air chamber of the oil-air filter 31 are temporarily collected in the oil storage box through the vent hole, and the inlet check valve prevents gas backflow. The operator can observe the oil level in the tank in real time through the level gauge 45, add lubricating oil through the oil filling hole 400, and perform maintenance on the inside of the tank through the mounting cover 44.
[0039] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An integrated oil-gas separation and cooling air compressor, characterized in that, It includes a base (1), an oil-gas cooler (2) installed on the upper end of the base (1), an oil-gas separator (4), an air compressor body (6), and a filter mounting base (3); The air compressor body (6) is provided with an air inlet (63), an oil inlet (62), and an oil-gas outlet (61); The oil vapor cooler (2) is fixedly provided with an oil vapor outlet (21) and an oil vapor inlet (22); The oil-gas separator (4) is fixedly provided with an oil-gas inlet (42), an oil outlet (41), and a compressed air outlet (43); The filter mounting base (3) is also provided with an oil-gas filter (31) and an oil filter (32) at its upper end. The oil-gas separator (4) is fixedly connected to a drive motor (5) at its upper end. An air compressor body (6) is also provided on the oil-gas separator (4). The output end of the drive motor (5) is fixedly connected to the air compressor body (6). The oil-gas outlet (61) is connected to the oil-gas inlet (42). The oil outlet (41) is connected to the oil vapor inlet (22). The oil vapor outlet (21) and the oil inlet (62) are connected through the filter mounting base (3).
2. The integrated oil-gas separation and cooling air compressor according to claim 1, characterized in that, The oil-gas separator (4) is also provided with an installation hole (40) and an oil filling hole (400) on its side. An installation cover (44) is also installed on one side of the oil-gas separator (4). A level gauge (45) is also fixedly installed on the installation cover (44).
3. The integrated oil-gas separation and cooling air compressor according to claim 2, characterized in that, The oil-gas separator (4) is provided with a sleeve (46) inside. Multiple sets of strip-shaped through holes (47) are provided on the outside of the sleeve (46). Threaded grooves (48) are provided on the outside of the strip-shaped through holes (47) and are provided in multiple sets and evenly distributed on the sleeve (46).
4. The integrated oil-gas separation and cooling air compressor according to claim 3, characterized in that, The threaded groove (48) is also provided with an auxiliary plate (49) fixedly connected to the sleeve (46), and the auxiliary plate (49) is provided in multiple sets and evenly distributed in the threaded groove (48).
5. The integrated oil-gas separation and cooling air compressor according to claim 1, characterized in that, The filter mounting base (3) is provided with an oil delivery hole (33) that communicates with the oil chamber of the oil-gas filter (31), and the screw air compressor body (6) is provided with an oil return hole (34) that communicates with the oil delivery hole (33).
6. The integrated oil-gas separation and cooling air compressor according to claim 5, characterized in that, The air inlet (63) is equipped with an air inlet check valve, and an oil storage box is also provided on the air inlet check valve. The filter mounting base (3) is provided with a vent hole that communicates with the air chamber of the oil and gas filter (31), and the oil storage box is connected to the vent hole.
7. An integrated oil-gas separation and cooling air compressor according to claim 3, characterized in that, The sleeve (46) is provided with a multi-layer metal filter screen connected to the inside of the tank.