Reasons and preventive measures for centrifugal pump dry running

   The cooling and lubrication of centrifugal pump bearings rely on the medium being transported; therefore, dry running is strictly prohibited to avoid power outages and the simultaneous operation of time and space loading operations. The bearings of centrifugal pumps we see daily basically rely on the medium for heat dissipation and lubrication, so dry running is absolutely prohibited.

Traffic congestion caused by equipment leakage

　　Insufficient reason: affecting centrifugal pump discharge, straw gas leakage, bottom valve leakage Inlet blockage ; Attempt bottom valve water intake ; Centrifugal pump speed is too low ; Excessive wear of sealing ring or impeller ; Excessive suction height, etc.

　　Solution: Check the suction pipe and bottom valve, plug the leaking gas source Clean the silt or plug at the water inlet ; The depth of the bottom valve water intake must be greater than 1.5 times the diameter of the inlet pipe, increase the depth of the bottom valve water intake ; Check the power voltage, increase the centrifugal pump speed, replace the sealing ring or impeller ; Reduce the installation height of the centrifugal pump, or replace a high-head pump.

　　In this case, the centrifugal pump is dry running due to lack of traffic. Two filters are directly connected. The first is a filter bag filter, and the second stage is a filter cotton core type. The two matching filter pumps are powered by 2.2 kilowatts (3 horsepower ) centrifugal pump, its flow requirement is the same. When the medicinal liquid from the filter is pumped by the centrifugal pump 1 filtered to 2 the filter, the flow rate will decrease, so the output of the medicine is insufficient 2 The centrifugal pump in the filter, after running for a period of time, has no water. The slurry pump will dry run due to insufficient flow, causing pump damage last autumn.

　　There are two solutions to solve this situation.

　　First: No. The filter centrifugal pump is open for operation, not only is there no connection, but the medicinal liquid is filtered directly.

　　Second: Yes, these two filters directly enter the double-tower filter, the filter bag filter bucket uses a cotton core type filter bucket, and there is a centrifugal pump.

Starting the centrifugal pump without filling it with water 'Slurry pump operation'
 
　　The centrifugal pump cannot be filled with water before operation. Be sure to check if the centrifugal pump is full of water before starting the pump to prevent damage caused by dry running of the centrifugal pump without water.
 
Debris reduces efficiency in the impeller
 
　　Debris stuck in the impeller will cause vibration and noise in the centrifugal pump, reduce work efficiency, and reduce the flow, leading to dry running of the centrifugal pump and pump damage. Debris should be kept clean to ensure smooth operation of the centrifugal pump.