News Digest:What are the dredge pump performance?, dredge pump for sale, sand pump parts, china do pump. What are the dredge pump performance? The performance parameters of the dredge pump mainly introduce several parameters that need to be considered during the sele
What are the dredge pump performance?
What are the dredge pump performance? The performance parameters of the dredge pump mainly introduce several parameters that need to be considered during the selection and use of the dredge pump, including: flow, lift, speed, shaft power, pump efficiency, efficiency, and NPSH.
Clear water is the most convenient medium for performance testing of dredge pumps, so dredge pump manufacturers generally only provide customers with the clean water performance of the pump;
In general, the lift indicated by the height of the liquid column is only related to the state of motion of the liquid;
The lift generated by the same pump to deliver water, air, mercury, etc. is the same in terms of lift.
When the dredge pump transports the dredge, due to the influence of the dredge concentration, the size of the solid particles, and the viscosity, the lift and efficiency of the same pump when conveying the clean water and transporting the dredge are changed.
Compared with pump delivery of clean water, when the dredge pump delivers a dredge of high concentration coarse particles, the lift and efficiency of the pump are significantly reduced;
When the dredge pump delivers fine particle dredge, the efficiency of the pump will increase in some cases.
Therefore, in addition to the knowledge of the clean water performance of the pump, we must also understand the difference between the performance of the dredge pump and the performance of the water.
dredge pump performance parameters are:
1. Flow rate: The amount of liquid discharged by the pump per unit time.
2. Head: The energy obtained by the unit weight of liquid passing through the pump.
3. Speed: The number of revolutions per minute of the pump shaft.
4. Shaft power: The power required by the prime mover to drive the pump.
5. Pump efficiency: The product of the weight flow of the pumped liquid (dredge) and the lift.
6. Efficiency: The ratio of effective power to shaft power.
7. Cavitation margin: The rich energy of the liquid per unit weight at the pump suction port that exceeds the vaporization pressure.
