liquid ring vacuum pump is a kind of coarse vacuum pump. The limit vacuum it can obtain is 2000-4000Pa. The vacuum degree of the unit composed of Roots vacuum pump and liquid ring vacuum pump can reach 1-600Pa. liquid ring vacuum pump can also be used as a compressor, called water ring compressor, liquid ring vacuum pump basic types?
Single-stage single-acting liquid ring vacuum pump Single-stage refers to only one impeller, single-acting refers to the impeller every rotation cycle, suction, exhaust once. The limit vacuum of the pump is high, but the pumping speed and efficiency are low.
Single-stage double-acting liquid ring vacuum pump Single-stage refers to only one impeller, double-acting refers to the impeller every rotation cycle, suction, exhaust twice. Under the same pumping speed condition, the double acting liquid ring vacuum pump greatly reduces the size and weight than the single action liquid ring vacuum pump. Because the working chamber is symmetrically distributed on both sides of the pump hub, the load acting on the rotor is improved. The pump has a higher pumping speed and higher efficiency, but the limit vacuum is lower.
The double stage liquid ring vacuum pump is mostly made up of single acting pumps in series. In essence, the impeller of two single stage single acting liquid ring vacuum pumps is connected by a single spindle. Its main feature is that it still has a large pumping speed at a higher vacuum, and the working condition is stable.
The atmospheric liquid ring vacuum pump is actually a series of water jet pumps of atmospheric ejectors. The air pump in front of the liquid ring vacuum pump is designed to increase the limit vacuum and expand the use scope of the pump.
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