When the pump is selected note these strengths and weaknesses - water ring vacuum pump

water ring vacuum pump pressure technology to meet the operating pressure. The limit of common choice pump pressure an order of magnitude lower than the technical requirements. Each pump has a certain work pressure range, as a result, the working point of the pump should be chosen in the range, no more than allow working pressure for a long time operation. Under the pressure, water ring vacuum pumps should be able to discharge all the gas produced in the process of vacuum equipment.

the choice of the vacuum unit: when one cannot meet the requirements of extraction and vacuum pump, you need to several pump combination, compensate each other, in order to meet the technological requirements. Some vacuum hopper cannot work under atmospheric pressure, vacuum need. Some of the water ring vacuum pump outlet pressure below atmospheric pressure, need backing pump. Therefore, need to use a combination of all pumps. Combination of water ring vacuum water pump, which we call water ring vacuum pump unit, vacuum system can get better vacuum degree and emissions. We should choose correct combination water ring vacuum pump.

because of different water ring vacuum pump to remove gas have different requirements. When you choose to pump oil seal, you should first understand your vacuum system whether have any request for oil pollution. If equipment strict with oil free, should choose all kinds of oil water pump, such as water ring pump, cryogenic pump, etc. Assumption is not demanding, whether to have oil pump and some of the ways to prevent oil pollution, such as the cooling hole, oil resistance, the baffle, etc. Also can achieve the requirement of clean vacuum.

compared with other types of mechanical vacuum pump, water ring vacuum pump has the following advantages: simple structure, low manufacturing accuracy, easy to processing. Compact structure, high pump revolution, without slowing down and installation can be directly connected to the motor. Therefore, the use of the structure of the small size, can get large exhaust volume, and the air volume is small. Tight gas is isothermal (basically Usually variable density index n = 1. 1 ~ 1. 15) , that is, tight gas in the process of temperature change is very small.

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