Causes Of Water Pump Efficiency Drop

1. Due to the erosion of the water flow, the inner wall of the pump flow channel and the water surface of the impeller become rough and uneven, and the friction coefficient of the flow channel in the water pump increases. In addition, the flow rate of water in the pump is very high, and the head loss increases. Reduced hydraulic efficiency.
2. Due to the dosing of drugs or water quality before the pump, the pump casing is seriously fouled or corroded. Severe fouling in the pump casing can increase the wall thickness of the pump casing by about 2 ram, and the inner wall of the pump will form scales, which will reduce the volume of the pump body, reduce the pumping capacity, and increase the flow channel and head loss. Both product efficiency and hydraulic efficiency are reduced.
3. Due to the casting defects, cavitation, abrasion, corrosion and chemical erosion caused by the pump processing technology, there are cavities or cracks in the pump flow channel, and the vortex is generated when the water flows, resulting in energy loss. Reduced hydraulic efficiency.
4. Cavitation on the impeller surface. Due to the negative pressure generated when the back surface of the blade is running, when the pressure Pk 5. Volume loss and mechanical loss. Due to the long service life of the pump, the mechanical wear will cause leakage and increase the resistance, which will reduce the volumetric efficiency and mechanical efficiency.
The above reasons make the pump performance worse. The operating efficiency is reduced by 2 to 5%, and in severe cases, the pump efficiency can be reduced by more than 10%.