What are the common faults and treatment methods of pumps?

1. The pump body is hot.

Cause: The bearing may have failed. If the clearance between the rolling bearing and the bracket cover is too small, it will cause the pump shaft to bend or the two shafts to be different. If the tape is too tight, the oil is insufficient or the oil quality is poor; The balance hole is blocked and the impeller loses balance, thus increasing the thrust to one side. Solution: Replace the bearing, remove the back cover, and install the gasket between the bracket and the bearing seat.

2. Insufficient flow

Usually, when the power speed does not match or the belt slips, the speed is low, the blade installation angle of the axial flow pump is too small, the lifting is insufficient, the pipeline is too long or the pipeline is on the right side, and the angle suction is too high; At the lower part of the valve, the impeller of the pipeline is partially blocked or the impeller is defective; The outlet pipe is seriously leaking. Solution: You can consider restoring to the rated speed, and remember to remove the belt grease and adjust the tightness of the belt. Reduce the installation position of the pump, and reduce or replace the pipeline by adjusting the blade angle. The bending degree of the pipeline; Seal the leakage of the water pump, compress the packing, remove the blockage, and replace the impeller; Replace the leakage ring to prevent leakage.

3. Do not absorb water

The air in the pump or the gas in the water supply line accumulates, or the lower valve is not closed tightly. The charge is not fully charged, and the vacuum pump packing is seriously discharged, and the gate valve or baffle door is not closed. The solution: first, press the water, fill the pump body with water, and then open it again.