The principle of water ring vacuum pump units parsing _

water ring vacuum pumps, water ring vacuum pump in the role of equipment is first for the roots vacuum pump needed for the formation of a vacuum. As for the general case, the limit of single stage water ring vacuum pump vacuum degree is not high, and the roots vacuum pump made in China need to pre vacuum is higher, so we don't actually need to single stage water ring vacuum pumps as backing water pump of the roots vacuum water pump, but use has lower limit pressure of two stage water ring vacuum pumps as backing pump, can also be reduced. The unit of pressure in the end.

the final pressure pump and water ring vacuum pump is 400 pa, can meet the demand of the general vacuum, but the size of its application by certain restrictions. If the two roots vacuum pump in series connection and then combined with water ring vacuum pump, it can greatly increase the limit pressure of equipment ( Can reach 25 pa) 。 Therefore, in this kind of type usually see two roots vacuum pump in series connection, and then the two stage water pump used as backing pump. If you need higher limit pressure, can use three roots vacuum pump and a water ring vacuum pump, the extreme pressure can reach 1 pa.

if you need to need a large amount of water vapor in the vacuum system, is more suitable for use of water ring vacuum pump, but due to its extremely low vacuum degree ( This is just a relative) , ultimate vacuum is not high. Although in need high vacuum degree of vacuum system, need higher limit vacuum mechanical vacuum pump is used as the backing pump. Gas ballast mechanical vacuum pump and water ring vacuum pumps in parallel, as the backing pump of the pump. When vacuum drilling, water ring vacuum pump is used for drainage, until the water vapor greatly reduced, and then open the gas mechanical vacuum pump to switch off the water ring vacuum pump. If demand is too long to complete the drilling time, is needed for the cooling water and power is relatively small.

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