Centrifugal pump cavitation phenomenon: a centrifugal pump temperature of 180 degrees, the pump pressure rose to normal after the pump outlet pump normal, rapid decline in pumping pressure about 10 minutes, accompanied by noise, vibration, cavitation occurs, Check the sewage station valve closed. 2 material pump, about 90 degrees of material easy to gasify the organic matter Pump open after the pump pressure rose to normal, due to feed small pump outlet, the pump outlet opening small, normal pump pressure, pump pressure decreased about 30 minutes, accompanied by noise vibration, Cavitation occurs. After the occurrence of these phenomena, you will find two situations occur: 1, one is the opening of the valve are not large 2, the other is the pump inlet and outlet material temperature was significantly higher than the original found in these two cases of cavitation occurs because Exit valve opening is not enough or not caused. When the outlet valve is not open or the opening is small, the energy obtained from the pump is not being sent in time, that is, the kinetic energy obtained from the material is converted into heat energy, which causes the material temperature to rise. When a certain temperature is reached, cavitation occurs in the pump body .
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