Causes of damage to impeller of multistage centrifugal pump

The main function of the multistage centrifugal pump impeller is to transfer the energy of the prime mover to the medium liquid, according to the requirements of the multistage pump conveying medium, the impeller is generally made of cast iron or stainless steel, and the pump impeller is usually damaged during operation, so what are the causes of damage to the multistage centrifugal pump impeller? Take a look below.

The multi-stage pump impeller is damaged for the following reasons:

1, Pump selection problem

The material of the multistage pump can not adapt to the actual working conditions of the medium, such as the physical and chemical characteristics of the medium, and the medium with a relatively large amount of solid;

2, Pump operation management problems

In the normal operation of the multistage pump, the foreign matter in the pipeline inside the pump is not removed, and the conveying medium contains a large number of hard solids, which causes the impeller to suffer damage;

3. Other problems with the pump

Multi-stage pump axial channeling, impeller temperature is too high, foreign matter in the pump body, the gap between the impeller and the pump shell is not adjusted, the pump starts suddenly into the water, and the quality of the impellinery damage will cause damage to the pump impeller.

If the pump impeller is found to be damaged, according to the actual situation and phenomenon of the pump impeller damage, and then check the actual working conditions and design and selection of the pump, jointly analyze and confirm, identify the cause of the pump damage, and prevent the pump impeller damage problem from happening again.