Oil mist recovery air compressor
By designing an oil mist recovery air compressor and using an oil mist separator to centrally process the oil mist discharged from the oil-free compression host and the oil tank, the problems of oil mist contamination and breathing cap clogging in oil-free air compressors have been solved, and the problem of compressed air has been achieved. Oil effect and equipment operation stability.
Patent Information
- Application Number
- CN202420844406.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-23
AI Technical Summary
The existing oil-free air compressors cannot completely remove oil mist during the compressed air process, resulting in compressed air pollution, and blocked breathing caps aggravate the speed of passage blockage and affect equipment operation.
An oil mist recovery air compressor is designed, including an oil-free compression host, an oil tank and an oil mist separator. The oil mist discharged from the oil-free compression host and the oil tank is centrally transported to the oil mist separator for separation processing through the recovery pipe. And the separated lubricating oil is recovered into the oil tank.
It effectively avoids channel blockage and compressed air pollution caused by oil mist blocking the breathing cap, ensuring the oil-free effect of compressed air, while saving the cost of the breathing cap and simplifying management.
Smart Images
Figure CN222376651U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air compression, in particular to an oil mist recovery air compressor. Background Art
[0002] At present, when oil-free air compressors are used to compress and produce compressed air, the compressed air produced contains oil mist and cannot achieve an oil-free effect. Utility Model Content
[0003] In order to solve the problem that the compressed air produced by the existing oil-free air compressor cannot achieve the oil-free effect, the inventor conducted in-depth research and found that: in the existing oil-free air compressor, the front shaft seal of the bearing of the oil-free compression main unit is connected to the outside world through a breathing cap, and multiple breathing caps are dispersedly configured on the oil-free compression main unit. Since the ability of a single breathing cap to handle oil mist is limited, as long as one of the breathing caps is blocked, the channel blocking speed of the entire oil-free compression main unit will be aggravated, and the internal pressure will accumulate at the blocked shaft seal, causing the oil mist to reversely penetrate from the shaft seal to the rotor end and contact the compressed air, thereby polluting the compressed air. Therefore, the utility model proposes an oil mist recovery air compressor, which includes an oil-free compression main unit, an oil tank and an oil mist separator. The breathing port on the casing of the oil-free compression main unit and the air vent on the oil tank are connected to the inlet of the oil mist separator through a recovery pipe, and the oil outlet of the oil mist separator is connected to the oil return port of the oil tank. The utility model oil mist recovery air compressor utilizes a recovery pipe to centrally transport the oil mist discharged from the oil-free compression main unit through the breathing port and the oil mist discharged from the oil tank through the air vent to the oil mist separator for separation and treatment, and recovers the separated lubricating oil to the oil tank. It can be seen that during the operation of the utility model oil mist recovery air compressor, the oil mist in the oil-free compression main unit can be prevented from clogging the breathing cap and accumulating at the shaft seal and then reversely permeating to the rotor end to pollute the compressed air, thereby ensuring that the compressed air produced is oil-free. In addition, in the utility model oil mist recovery air compressor, the breathing cap is eliminated, which can save the cost of the breathing cap; the recovery pipe is used to uniformly recover the oil mist discharged from multiple breathing ports on the oil-free compression main unit into the oil mist separator for recovery and treatment, which is convenient for management.
[0004] Preferably, a branch pipe is provided at the air vent on the oil tank, and the inlet of the branch pipe is connected to the breathing port on the oil-free compression main unit through the recovery branch pipe in the recovery pipe, and the outlet of the branch pipe is connected to the inlet of the oil mist separator through the recovery main pipe in the recovery pipe. In the utility model oil mist recovery air compressor, the oil mist discharged from the oil-free compression main unit through the breathing port is transported to the branch pipe installed at the air vent on the oil tank through the recovery branch pipe. When the oil mist discharged from the oil-free compression main unit through the breathing port reaches the branch pipe through the recovery branch pipe, it is cooled and gathered into oil droplets after long-distance transmission and falls into the oil tank. The remaining oil mist and the oil mist discharged from the oil tank through the air vent are collected in the recovery main pipe and transported to the oil mist separator through the recovery main pipe for separation and recovery. In this way, the utility model oil mist recovery air compressor extends the length of the recovery branch pipe, which is conducive to the cooling of the oil mist discharged from the oil-free compression main unit through the breathing port and directly drips back into the oil tank through the branch pipe, reducing the workload of the oil mist separator.
[0005] Preferably, a recovery tray is provided at the bottom of the oil mist separator, and the inlet and the oil outlet of the oil mist separator are both located on the recovery tray. In this way, the oil mist entering the oil mist separator through the inlet is first filtered and recovered by the recovery tray, and then separated and processed, and the recovery tray can be reused, which effectively reduces the amount of oil mist separated and processed by the oil mist separator, prolongs the service life of the oil mist separator, and ensures that the interior of the unit of the oil-free recovery air compressor of the utility model is clean and tidy.
[0006] Preferably, a differential pressure sensor is provided on the recovery main pipe. Thus, during the operation of the oil mist recovery air compressor of the utility model, the differential pressure sensor can be used to detect the differential pressure of the oil mist entering the oil mist separator in real time, so as to facilitate real-time monitoring of the treatment effect of the oil mist separator, thereby timely carrying out early warning replacement according to the treatment effect of the oil mist separator obtained through monitoring, thereby ensuring the normal operation of the oil mist recovery air compressor of the utility model.
[0007] Preferably, the oil mist separator is located in the cooling air duct at the rear end of the cooler. In this way, the oil mist separator is arranged in the cooling air duct at the rear end of the cooler, so that even if the oil mist separator is in a negative pressure environment, the oil mist in the recovery main pipe is prevented from being retained in the pipe or even backflowing, so that the oil mist separator can absorb more oil mist; the cooling air in the cooler is used to cool the oil mist separator, thereby increasing the speed of the oil mist separator in separating and processing the oil mist, and increasing the separation and processing speed of the oil mist separator.
[0008] Preferably, the oil mist recovery air compressor also includes an oil pump, the inlet of the oil pump is connected to the oil outlet of the oil tank through an oil extraction pipe, the oil outlet of the oil pump is connected to the cooling inlet of the cooler through an oil delivery pipe, and the cooling outlet of the cooler is connected to the cold oil inlet of the oil-free compression main unit through an oil delivery pipe. In this way, the lubricating oil in the oil tank is extracted by the oil pump and delivered to the cooler for cooling treatment, and then delivered to the oil-free compression main unit through the oil delivery pipe, so that the lubricating oil is conveniently circulated repeatedly in the oil mist recovery air compressor of the utility model. Furthermore, an overflow valve is provided on the oil delivery pipe, and the overflow port of the overflow valve is connected to the reflux port of the oil tank. In this way, an overflow valve connected to the reflux port of the oil tank is provided on the oil delivery pipe, so that part of the lubricating oil can flow back to the oil tank through the overflow port when the oil pressure in the oil delivery pipe is too high.
[0009] Preferably, the oil pump is a screw pump. In this way, the screw pump is used as the oil pump to extract lubricating oil from the oil tank, and the selection, installation and control are simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 The utility model is a schematic diagram of the structural principle of the oil mist recovery air compressor. DETAILED DESCRIPTION
[0011] Next, combine Figure 1 , the utility model oil mist recovery air compressor is described in detail.
[0012] like Figure 1As shown, the oil mist recovery air compressor of the utility model comprises an oil-free compression main unit 1, an oil tank 2 and an oil mist separator 3. The breathing port 111 on the housing 11 of the oil-free compression main unit 1 and the air vent 21 on the oil tank 2 are connected to the inlet 31 of the oil mist separator 3 through a recovery pipe (not shown in the figure), and the oil outlet 32 of the oil mist separator 3 is connected to the oil return port 22 of the oil tank 2. The oil mist recovery air compressor of the utility model uses a recovery pipe to centrally transport the oil mist discharged from the oil-free compression main unit 1 through the breathing port 111 and the oil mist discharged from the oil tank 2 through the air vent 21 to the oil mist separator 3 for separation and treatment, and recover the separated lubricating oil into the oil tank 2. It can be seen that during the operation of the oil mist recovery air compressor of the utility model, the oil mist in the oil-free compression main unit 1 can be prevented from being blocked by the breathing cap and accumulating at the shaft seal and then permeating back to the rotor end to pollute the compressed air, thereby ensuring that the compressed air produced is oil-free. In addition, in the oil mist recovery air compressor of the utility model, the breathing cap is eliminated, which can save the cost of the breathing cap; the oil mist discharged from the multiple breathing ports 111 on the oil-free compression main unit 1 is uniformly recovered into the oil mist separator 3 for recycling and treatment by using a recovery pipe, which is convenient for management. Preferably, a branch pipe 4 is provided at the air vent 21 on the oil tank 2, and the inlet of the branch pipe 4 is connected to the breathing port 111 on the oil-free compression main unit 1 through a recovery branch pipe (not shown in the figure) in the recovery pipe, and the outlet of the branch pipe 4 is connected to the inlet of the oil mist separator 3 through a recovery main pipe (not shown in the figure) in the recovery pipe. In the oil mist recovery air compressor of the utility model, the oil mist discharged from the oil-free compression main unit 1 through the breathing port 111 is transported to the branch pipe 4 at the air vent 21 installed on the oil tank 2 through the recovery branch pipe. When the oil mist discharged from the oil-free compression main unit 1 through the breathing port 111 reaches the branch pipe 4 through the recovery branch pipe, it is cooled and gathered into oil droplets after long-distance transmission and falls into the oil tank 2. The remaining oil mist and the oil mist discharged from the oil tank 2 through the air vent 21 are collected in the recovery main pipe and transported to the oil mist separator 3 through the recovery main pipe for separation and recovery. In this way, the oil mist recovery air compressor of the utility model extends the length of the recovery branch pipe, which is conducive to the cooling of the oil mist discharged from the oil-free compression main unit 1 through the breathing port 111 and directly dripping back to the oil tank 2 through the branch pipe 4, reducing the workload of the oil mist separator 3. Preferably, a recovery tray 31 is provided at the bottom of the oil mist separator 3, and the inlet 311 and the oil outlet 312 of the oil mist separator 3 are both located on the recovery tray 31. In this way, the oil mist entering the oil mist separator 3 through the inlet 311 is first filtered and recovered by the recovery tray 31, and then separated and processed, and the recovery tray 31 can be reused, which effectively reduces the amount of oil mist separated and processed by the oil-free separator 3, prolongs the service life of the oil mist separator 3, and ensures that the inside of the unit of the oil-free recovery air compressor of the utility model is clean and tidy. Preferably, the recovery tray 31 includes a tray bottom (not shown in the figure) and filter cotton (not shown in the figure), and the filter cotton is located inside the oil mist separator 3 and pressed on the tray bottom.In this way, the recovery tray 31 uses filter cotton to preliminarily filter the oil mist entering the oil mist separator 3 through the inlet 311. Preferably, a differential pressure sensor 6 is provided on the recovery main pipe. In this way, during the operation of the oil mist recovery air compressor of the utility model, the differential pressure sensor 6 can be used to detect the differential pressure of the oil mist entering the oil mist separator 3 in real time, so as to facilitate real-time monitoring of the treatment effect of the oil mist separator 3, so as to timely carry out early warning replacement according to the treatment effect of the oil mist separator 3 obtained by monitoring, thereby ensuring the normal operation of the oil mist recovery air compressor of the utility model. Preferably, the oil mist separator 3 is located in the cooling air duct 71 at the rear end of the cooler 7. In this way, the oil mist separator 3 is arranged in the cooling air duct 71 at the rear end of the cooler 7, even if the oil mist separator 3 is in a negative pressure environment, to avoid the oil mist in the recovery main pipe from being retained in the pipe or even refluxed, so that the oil mist separator 3 can absorb more oil mist; the cooling wind in the cooler 7 is used to cool the oil mist separator 3, so as to increase the speed of oil mist separation and treatment of oil mist by the oil mist separator 3, and to increase the separation and treatment speed of the oil mist separator 3.
[0013] like Figure 1 As shown, the oil mist recovery air compressor of the utility model also includes an oil pump 8, the inlet of the oil pump 8 is connected to the oil outlet 23 of the oil tank 2 through an oil extraction pipe (not shown in the figure), the oil outlet of the oil pump 8 is connected to the cooling inlet of the cooler 7 through an oil delivery pipe (not shown in the figure), and the cooling outlet of the cooler 7 is connected to the cold oil inlet of the oil-free compression main unit 1 through an oil delivery pipe (not shown in the figure). In this way, the lubricating oil in the oil tank 2 is extracted by the oil pump 8 and transported to the cooler 7 for cooling treatment, and then transported to the oil-free compression main unit 1 through the oil delivery pipe, so as to facilitate the repeated circulation of the lubricating oil in the oil mist recovery air compressor of the utility model. Preferably, an overflow valve 9 is provided on the oil delivery pipe, and the overflow port of the overflow valve 9 is connected to the return port of the oil tank 2. In this way, an overflow valve 9 connected to the return port 24 of the oil tank 2 is provided on the oil delivery pipe, so that part of the lubricating oil can flow back to the oil tank 2 through the overflow port when the oil pressure in the oil delivery pipe is too high. Preferably, the oil pump 8 is a screw pump. In this way, the screw pump is used as the oil pump 8 to extract lubricating oil from the oil tank, and the selection, installation and control are simple and convenient.
Claims
1. An oil mist recovery air compressor, characterized in that: The oil mist recovery air compressor comprises an oil-free compression main unit, an oil tank and an oil mist separator. The breathing port on the casing of the oil-free compression main unit and the air vent on the oil tank are connected to the inlet of the oil mist separator through a recovery pipe, and the oil outlet of the oil mist separator is connected to the oil return port of the oil tank.
2. The oil mist recovery air compressor according to claim 1, characterized in that: A branch pipe is provided at the air vent on the oil tank, and the inlet of the branch pipe is connected to the breathing port on the oil-free compression main unit through the recovery branch pipe in the recovery pipe, and the outlet of the branch pipe is connected to the inlet of the oil mist separator through the recovery main pipe in the recovery pipe.
3. The oil mist recovery air compressor according to claim 2, characterized in that: A recovery tray is arranged at the bottom of the oil mist separator, and the oil inlet and the oil outlet of the oil mist separator are both located on the recovery tray.
4. The oil mist recovery air compressor according to claim 3, characterized in that: A pressure difference sensor is arranged on the recovery main pipe.
5. The oil mist recovery air compressor according to any one of claims 1 to 4, characterized in that: The oil mist separator is located in the cooling air duct at the rear end of the cooler.
6. The oil mist recovery air compressor according to claim 5, characterized in that: The oil mist recovery air compressor also includes an oil pump, the inlet of the oil pump is connected to the oil outlet of the oil tank through an oil extraction pipe, the oil outlet of the oil pump is connected to the cooling inlet of the cooler through an oil delivery pipe, and the cooling outlet of the cooler is connected to the cold oil inlet of the oil-free compression main unit through an oil delivery pipe.
7. The oil mist recovery air compressor according to claim 6, characterized in that: The oil delivery pipe is provided with an overflow valve, and the overflow port of the overflow valve is communicated with the return port of the oil tank.
8. The oil mist recovery air compressor according to claim 6, characterized in that: The oil pump is a screw pump.