How to deal with the centrifugal pump by cavitation?

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the centrifugal pump cavitation situation: 1, the turbid water pump, the use of controlled temperature of 80 degrees, after the open pump pump pressure to unusual, open the pump discharge pump pressure is normal, about 10 minutes pump hurriedly, accompanied by noise, the volatility, the outbreak of cavitation phenomenon, the review found that sewage station valve cover, 2, material water pump, the material of 90 degrees or so easy open pump pump pressure to normal after gasification of organic matter, because the rate of small pump discharge, the water pump discharge opening is small, pump pressure is normal, about 30 minutes pump pressure drop, along with the noise vibration, cavitation erosion occurred after the occurrence of the above phenomenon, will find there are two conditions: 1, one is the outlet valve opening is not large; 2, in addition to henan fire pump is a pump materials import and export temperature understand than they could rise a lot in found the two l cases occurred because of cavitation is lack of the outlet valve opening or vertical fire pump is not open when the outlet valve to open or opening hours, material of energy has not been from the pump and fire pump, henan off, when is the kinetic energy of the material to be acquired and transformed into heat energy, the temperature of material rise, when arrived at certain temperature was kindled in the water pump body cavitation phenomenon.

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