Relationship Between Slurry Pump Speed, Flow Rate And Head

Date: 2025-11-17     From: Longding     Author: admin

There is a close relationship between the speed, flow rate, and head of a slurry pump. When selecting and using a slurry pump, it is necessary to determine the optimal speed range based on the specific application and conveying requirements to obtain the best pump performance and usage effect.

Relationship between slurry pump speed, flow rate, and head

1. Relationship between slurry pump speed and flow rate

The speed of a slurry pump directly affects its flow rate. The formula for calculating flow rate is: Q = n × V. Where Q is the flow rate, n is the pump speed, and V is the volume passing through the pump per unit time. As the speed of the slurry pump increases, the flow rate also increases. This is because the high-speed rotating blades accelerate the movement of the liquid, thereby increasing the pump’s flow rate. However, when the liquid viscosity is high, the flow rate may decrease due to increased resistance as the rotational speed increases.

2. Relationship between slurry pump speed and head

The speed of the slurry pump also affects its head. The formula for calculating the head is: H = K × n², where H is the head, and K and n are constants. When the speed of the slurry pump increases, the head will also increase, and the rate of increase will be a square multiple. This is because the centrifugal force generated by the high-speed rotating blades causes the pump plunger to rise, thereby increasing the pump’s head. However, within a certain range, as the speed of the slurry pump increases, the pump efficiency may decrease. Furthermore, the rate of increase in pump pressure and head will slow down, or may even cease to increase altogether.

3. Practical applications

In practical applications, when selecting the speed of a slurry pump, it is necessary to comprehensively consider the flow rate, head, and pump efficiency. Excessive speed can lead to problems such as reduced pump efficiency, increased wear, and increased energy consumption. Therefore, the optimal speed range should be determined based on the specific application and delivery requirements to achieve the best pump performance and results.

In addition, the effect of liquid viscosity on flow rate must be considered. In liquids with high viscosity, excessively high rotation speed may lead to a decrease in flow rate. Therefore, adjustments need to be made based on the actual situation.