Reasons for the short service life of the flow parts of the slurry pump

The service life of the flow parts of the slurry pump is expected to be relatively short, so what is the cause of this problem? The following editor will give you an introduction.

The short service life of the slurry pump flow parts is mainly due to the serious "cavitation damage", and the abrasion problem of the pump itself is not the main reason. The main reason is that the service life of the overflow parts is reduced due to the cavitation of the pump, and the NPSH of the device is smaller than the NPSH of the pump.

The first is the inaccuracy of the parameters in the selection process: the design head is 60m during the selection, which is basically in line with the calculation of the pipeline, but according to the on-site motor speed and flow calculation, the actual head exceeds 80m, and the actual situation should be affected by the actual pipeline. The value of the pipeline friction factor in the loss has a large deviation, so that the pipeline loss is higher than the calculated value, and the actual head of the pump is increased, which makes the pump speed higher and the pump cavitation performance decreases. At the same time, the unreasonable piping layout also causes the pump parameters to be quite different from the original selection parameters, which makes the previous selection inconsistent with the actual.