Screw thick slurry pump troubleshooting method

Screw thick-slurry pump is difficult to start: The screw thick-slurry pump liquid does not fill the pump chamber and has a large frictional resistance.

Screw thick liquid pump packing gland pressure too tight, friction between the shaft and packing torque is too large: use a pipe wrench to move the coupling pump spindle 3 ~ 6 turn, adjust the packing gland.

The screw thick liquid pump does not discharge liquid after starting: the screw thick liquid pump has a lot of air suction;

Screw thick slurry pump motor steering is wrong;

Screw thick slurry pump liquid viscosity is too large: check the inlet level is too low, suction pipe leak; connect any two-phase motor inlet; dilution liquid.

Screw thick slurry pump has snare vibration or noise, screw thick slurry pump motor and pump shaft are not concentric;

The screw thick slurry pump pump sucks air or liquid mixture with a lot of air. Readjust the concentricity; check the material level and try to remove the air in the inhalation solution.

During the operation of the screw thick slurry pump, the flow rate was significantly reduced, the bushing of the screw thick slurry pump was worn, and the clearance increased.

Screw thickened pump speed decreased.

Screw shaft thick pump universal joint or shaft damage transmission failure;

Insufficient depth of immersion in the suction line of the screw thickened pump, air entering the pump, replacement of the bushing, replacement of the screw if necessary, inspection of the power supply and motor, shutdown inspection, replacement of shaft couplings or spools, reduced suction height, increased Dip into the depth and remove the air in the suction liquid.

Screw thick-slurry pump motor is overloaded, thick-sluice pump head exceeds the pump too many Yang;

Screw thick slurry pump liquid viscosity is too high.

Screw thickened pump voltage is too low to minimize pipe head loss or replace high lift pump. Dilute the feed solution; check the cause and increase the voltage to the specified value.

A large amount of leakage occurs in the shaft seal packing of the screw thickened pump, the thick pressure pump cap is too loose, and the screw thick slurry pump packing wears;

The position of the screw thick-slurry pump inlet and outlet is opposite. Adjust the gland; replace the packing; use the middle flange as the suction port.

The main operating data necessary for the selection are:

Screw thick slurry pump conveying medium name, corrosivity, abrasiveness, viscosity, solid content, working temperature;

Operating parameters flow or flow range, maximum pressure, continuous or intermittent operation;

Installation environment Horizontal or vertical, fixed or moving, connecting pipe special requirements, explosion protection requirements.