Water ring pump is a rough vacuum pump, the pump body, impeller, suction exhaust plate, water in the pump body wall water ring, exhaust port, intake port, auxiliary exhaust valve and other components. It can achieve the ultimate pressure. About single-stage pump 2.66 ~ 9.31kPa; About double-stage pump 0.133 ~ 0.665kPa. Water ring pump can also be used as a compressor, which belongs to the low-pressure compressor, the pressure range (1 ~ 2) X105Pa gauge pressure. Gas from the pipeline through the valve into the water ring pump, and then discharged into the gas-water separator by the air duct, air-gas separator exhaust pipe. When used as a compressor, the gas-water mixture discharged by the compressor is separated from the gas-water separator, and the gas is sent to the system requiring the compressed gas through the valve, while the water remains in the gas-water separator. In order to make the gas-water When the water level is higher than the requested water level, the overflow switch is turned on and the water overflows from the overflow pipe. When the water level is lower than the requested water level, the overflow switch is turned off, and the water separator Water level rises to reach the requested level. The working water in the water ring pump is supplied by the gas-water separator. The size of water supply is adjusted by the valve on the water supply pipe. Water ring pump in the petroleum, chemical, machinery, mining, light industry, papermaking, power, metallurgy, pharmaceutical and food industries and municipal and agricultural departments of many processes, such as vacuum filtration, vacuum feeding, vacuum degassing, vacuum Evaporation, vacuum concentration and vacuum regurgitation, have been widely used.