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After the start of the pump, there is usually air in the pump or gas accumulation in the intake pipe, or unsatisfactory irrigation and diversion of the bottom valve, serious leakage of vacuum pump filler, inadequate closure of gate valve or clap door.

Pump effluent insufficiency elimination method 1:

Remove debris, replace damaged rubber pad, change valve direction;

Compress or replace new packing, close gate valve or clap door;

Increase the amount of irrigation and drainage until no bubbles occur at the outlet screw plug.

Replace the cracked pipe, lower the head, and press the nozzle of the pump into the water for 0.5 meters.

When starting, the pump does not turn: the packing is too tight or the impeller and pump body are blocked by debris, or the pump shaft, bearing, leakage ring rust, or the pump shaft severe bending.

Pump effluent insufficiency elimination method 2:

Relax the packing and dredge the diversion tank.

Remove the pump body to remove impurities and rust; remove the pump shaft to correct or replace the new pump shaft. There are screw pumps, slurry pumps, multi-stage pumps or water ring vacuum pumps with fillers.

Pump fever bearing damage:

The clearance of dynamic bearing or bracket cover is too small.

The pump shaft is bent or two axes are not concentric; the tape is too tight;

Lack of oil or poor oil quality;

The balance hole on the impeller is blocked and the impeller loses balance, which increases the thrust to one side.

Pump effluent insufficiency elimination method 3:

Replacement of bearings;

Remove the back cover and install gaskets between the bracket and the bearing seat.

Adjust the concentricity of the pump shaft or the two axes, and loosen the belt tightness properly.

Add clean butter, which accounts for 60% of the free space in the bearing.

Clear the blockage in the balance hole.