Q: What is the speed of a centrifugal pump?

Answer: The speed of the centrifugal pump refers to the number of times the pump shaft rotates in a unit time. It is usually expressed by n, and the unit is r / min. Generally, the small centrifugal pump is higher at 2900 r / min or 1450 r / min, and the large centrifugal pump is lower at 970 r / min or 730 r / min. When the speed is constant, the flow, head, and power are constant.
The speed of centrifugal pump is the difference between 1450r / min and 2900r / min
The speed of the centrifugal pump refers to the number of revolutions per minute of the centrifugal pump shaft. Represented by the symbol n. Speed ​​refers to the number of revolutions of the centrifugal pump shaft per minute when the centrifugal pump is pumped by the power machine. It is represented by the symbol n and the unit is r / min.
There are two common types of centrifugal pump speeds in our usual centrifugal pump applications: one is 1450r / min and the other is 2900r / min. What is the difference between the speed of the centrifugal pump is 1450r / min and 2900r / min? The following is a detailed description of this issue.
1.1450r / min centrifugal pumps are generally low-lift, high-flow pumps using low-speed 4-stage motors, while 2900r / min centrifugal pumps are high-lift centrifugal pumps, using high-speed 2-stage motors.
2. When the flow and head requirements of the centrifugal pump are the same, the noise of the low speed centrifugal pump in the flow and head operation is lower than that of the high speed water pump. Compared with high-speed centrifugal pumps, low-speed centrifugal pump impellers have better wear resistance and relatively less vibration to the ground;
3. The centrifugal pump's flow rate and head requirements are the same, the low speed centrifugal pump is also expensive. This is because the level 4 motor has more copper wires than the level 2 wire package.
4. From the aspect of design pursuit, high speed centrifugal pump is more efficient than low speed centrifugal pump.

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