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The application of cold water machine the roots vacuum pump

This paper mainly analyses the cold water machine in the application of the roots vacuum pump, first of all, the roots vacuum pump is widely used, it is suitable for vacuum smelting, vacuum drying, vacuum impregnation, vacuum degassing, vacuum operation on applications such as in petroleum, chemical, plastics, pesticides, steam turbine rotor dynamic balancing, aerospace space simulation device got long running test, but also widely used in petroleum, chemical industry, metallurgy, textile and other industries. Roots vacuum pump is a vacuum pump without internal compression, compression ratio is very low, usually before the use process need to increase the pump. Why
roots vacuum pump need to form a complete set of machine use cold water, because the former stage pump rotary piston vacuum pump is usually used, so the existing of roots pump units are including the roots vacuum pump, vacuum pump and oil and gas separation device, work, slide valve vacuum pump to start, first will be increased to the vacuum degree necessary for the roots vacuum pump and vacuum degree play Cairo, vacuum pump suction. In the process of actual use, sometimes need to extract higher gas temperature, but the roots vacuum pump working environment generally in the range of 5 ~ 40 ℃, the request into the gas temperature is not more than 40 ℃, at this point you need will be pumping gas cooling processing first. So you need to equipped with cooling equipment - - Cold water machine.

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