Water ring vacuum pump is widely used in the pharmaceutical industry, such as vacuum evaporation, vacuum concentration, vacuum conveyor, vacuum sterilization, vacuum drying, vacuum packaging and vacuum mixed emulsifying process requirement. How to choose the proper vacuum pump reasonably requires some understanding of the principle of various vacuum pumps and the use of methods.
Water ring vacuum pump is water or other liquid as circulating working fluid through the change of pump content volume to achieve the purpose of vacuum extraction. It is impossible to get the inlet pressure lower than the working liquid steam pressure by using liquid ring pump. If the liquid steam pressure is close to the inlet pressure, it will cause cavitation erosion and damage to the pump. For example, at 15 ℃ water vapour pressure of 1.7 x 103 Pa, to avoid cavitation, allowing the minimum inlet pressure of water ring pump is 3.3 x 103 Pa. If the inlet pressure is lower than this value, the media with lower steam pressure, such as kerosene, styrene and ethylene glycol, should be selected.
Water Ring Vacuum Pump In Pharmaceutical Equipment Industry
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