The water ring vacuum pump is an eccentric rotor with multiple blades installed in the pump shell to rotate, throwing water to the pump shell to form a water ring concentric with the pump shell, and the water ring and the rotor blades form a periodic change of volume, so as to suction, compress and discharge the gas. The advantages of the utility model are that the air volume is large when the vacuum is low, and the condensable gas such as water vapor can be directly pumped.
Jet vacuum pump is a kind of momentum transfer pump which uses the high-speed jet produced by the pressure drop of Venturi effect to deliver gas to the outlet. It is divided into water jet vacuum pump, steam jet vacuum pump, steam water series jet vacuum pump and steam water combined jet vacuum pump. Jet vacuum pump has many advantages, such as wide range of vacuum degree, direct extraction of condensable gases such as steam and granular medium, simple structure, convenient operation, small amount of maintenance without running parts, energy saving and consumption reduction, etc., which make the imported vacuum pump more and more widely used in various processes of chemical operation.
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