Troubleshooting And Maintenance Of Submersible Slurry Pumps

Under-liquid slurry pump is a common industrial equipment and is widely used in the transportation of various slurries and particulate materials.However, various faults may occur during use, affecting its normal operation.This article will introduce common troubleshooting and repair methods for under-liquid slurry pumps.　　1. Troubleshooting　　1. Severe vibration of the pump body　　Cause of the failure: It may be due to severe bearing wear, bending of the pump shaft, loose rotating parts or gas in the pump.　　Exclusion method: Check the wear of the bearing and pump shaft. If the wear is serious, replace it; check whether the rotating parts are loose, tighten the loose parts; check whether there is gas in the pump and exhaust through the exhaust valve.　　2. The pump cannot start or the starting load is large　　Cause of the fault: It may be due to the power supply not being turned on, the motor failure, the pump head is blocked or the seal is too tight.　　Free removal: Check whether the power supply is turned on; Check whether the motor is malfunctioning; Check whether the pump head is blocked, clean up blocked objects; adjust the tightness of the sealing ring.　　3. Inadequate or no flow rate of the pump　　Cause of the fault: It may be due to the clogged pump head, the inlet and outlet valves not opened, or the pipeline resistance is large.　　Exclusion method: Check whether the pump head is blocked, clean up the blocked objects; check whether the inlet and outlet valves are open; check whether the pipeline is strong, and clean the pipeline.　　2. Maintenance　　1. Maintenance of pump body　　For the maintenance of pump body, the first thing to do is to disassemble the pump body and check the wear of internal parts.If the bearings, pump shafts, impellers and other components are seriously worn, new components need to be replaced.At the same time, it is also necessary to check the wear of the seal ring and replace the overly worn seal ring in time.　　2. Motor repair　　If the motor fails, you need to disassemble the motor and check whether the internal windings and lines are damaged.If the line is found to be broken or the winding is shorted, the line needs to be repaired or replaced.At the same time, it is also necessary to check whether the bearings of the motor are worn. If the wear is serious, a new bearing needs to be replaced.　　3. Maintenance of inlet and outlet valves　　Inlet and outlet valves are one of the important components of under-liquid slurry pumps.If the inlet and outlet valves fail, a new valve needs to be replaced in time.When replacing valves, you need to pay attention to the sealing and corrosion resistance of the valves and choose a good quality valve brand.　　The liquid slurry pump needs to be maintained and maintained during use, regularly check the wear of each component, and replace parts with severe wear in a timely manner.At the same time, you also need to pay attention to the use environment and usage methods to avoid human failures and damage.