Causes of insufficient flow in multistage pumps

There are many reasons for insufficient flow of multi-stage pumps, relatively common are motor failure, blockage of the overflow channel, impeller cracking, cavitation, installation errors, etc. For different failures have different solutions, in order to ensure that users quickly solve the problem with a good pump experience, in the pump industry to provide corresponding processing suggestions for the corresponding causes of failure.

On the causes of insufficient flow of multi-stage pumps, common causes and processing suggestions are as follows.

1, first of all, to confirm the flow is insufficient at the same time, whether the motor is accompanied by strange sound or shaking, consider the motor is abnormal due to, can check the motor voltage, speed and other parameters within the standard value, and to confirm that there is no overflow, overload and other circumstances.

2, to confirm that the location of the installation of the multi-stage pump in line with the corresponding standards, focusing on checking the pipeline layout, to see if there is too long or too much bending, resulting in energy consumption.

3, check the internal overflow channel, consider whether there is a blockage, especially after a long period of use, if the liquid transported mixed with more than transport standards of materials may form a narrowing of the overflow channel, in serious cases will be blocked, become a multi-stage pump flow is not enough reason. In this regard, it is recommended to install a filter at the pump entrance to prevent, but also need to try to avoid foreign objects mixed with the transported liquid.

4, check whether the pump cavity is infiltrated with too much air, resulting in the internal pump cavity can not properly form pressure, thus posing a direct impact on the flow, need to properly exhaust before normal use, just open the exhaust valve can be.

5, if a certain number of years of use of multi-stage pump, is considered to be the internal components in the long use of wear and tear, it is recommended to dismantle the pump to check such as impellers, bearings, ball valves, seals and other related components, has worn serious parts to replace, in addition to the need to do a good job of regular maintenance checks, to avoid this situation again.

The above, which explains the causes of insufficient flow of multi-stage pumps, also provides the corresponding measures to deal with, taking into account the actual working conditions are complex and variable, if you need professional technical support, you can directly consult zhaoquan screw pump industry.