Will wear of the centrifugal pump impeller affect the pump’s vibration level and dynamic balance?
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During operation, centrifugal pumps experience wear of the impeller due to the presence of solids in some of the medium and poor quality of the working fluid; it is possible that this wear could affect the dynamic balance of the pump. What causes the pump’s vibration level to be high?
If the impeller is valuable, it can be repaired.
It is possible, but the speed of the pump is generally not high; in most cases the vibration has little noticeable effect, and companies with average maintenance standards will not be able to detect it
Based on the degree of wear, normal wear is acceptable; however, if the blades are damaged, it will definitely cause vibration.
The most important factors are the working medium and the material of the impeller; under normal circumstances, wear is uniform, so the likelihood of abnormal vibrations is not very high； In extreme cases, this can lead to uneven wear of the impeller; in particular, the wear at the rim area is often very uneven. This results in an offset center of gravity of the impeller, which in turn causes vibration in the pump. Therefore, it is advisable to filter the fluid, to clean the filters regularly, and to choose appropriate materials for the impeller, in order to prevent damage to the pump due to inadequate maintenance.