Vertical chemical pump fault analysis and solution

It has good performance in the fields of industrial production, urban water supply, high-rise building water supply, etc., and its use has also been recognized due to its particularity in the workplace.

In special cases, the situation that may occur when the vertical centrifugal pump is working should be prepared in advance to deal with the failure of the vertical chemical pump in time. Next, several common vertical chemical pump failures will be analyzed, and it is hoped that these solutions will help the user's work.

1. Fault phenomenon: The pump cannot be discharged.

Failure analysis: a. to the opposite direction of rotation; b. suction or discharge valve closed; c. no substance at the inlet, the pressure is too low;

Solution: a. determine the direction of rotation; b. confirm that the valve is closed; c. check valve and pressure gauge;

2. Fault phenomenon: insufficient pump flow

Failure analysis: a. suction or discharge valve is closed; b. inlet pressure is low; c. outlet pipe is blocked;

Solution: a. Ensure that the valve is closed; b. Check if the valve is open; c. Confirm that the flow is normal;

3. Fault phenomenon: abnormal sound

Fault analysis: a. Coupling eccentricity or poor lubrication; b. Motor failure; c. Abnormal reducer;

Solution: a. correct or fill the grease; b. check the motor; c. check the bearings and gears;

4. Fault phenomenon: current is too large

Fault analysis: a. The outlet pressure is too high; b. The melt viscosity is too high; c. The shaft package is poorly fitted;

Solution: a. Check downstream equipment and piping; b. Check viscosity; c. Check shaft seal and adjust it properly;

5. Fault phenomenon: the pump suddenly stops

Fault analysis: a. power failure; b. motor overload protection; c. coupling damage; d. outlet pressure is too high, interlocking reaction;

Solution: a. check the power supply; b. check the motor; c. open the safety cover, drive the car for inspection; d. check the instrument interlocking system;