Vertical centrifugal pipeline pump has very good performance in industrial production, urban water supply, high-rise building water delivery and other fields, and its use has been affirmed by people.

Because of the special nature of its workplace, so the vertical centrifugal pipeline pump may occur when working to prepare solutions in advance, preferably the first time the vertical centrifugal pump failure can have timely processing. The next will analyze several common vertical centrifugal pipeline pump failures and hope that these solutions can provide help for the work of users.

1、Fault phenomenon: the pump can not discharge material

Failure analysis:
a. Rotation in the opposite direction.
b. Inlet or discharge valve closed.
c. No material at the entrance or the pressure is too low.
Solution:
a. Confirm the direction of rotation.
b. Confirm whether the valve is closed.
c. Check the valve and pressure gauge.

2、Fault phenomenon: pump flow is not enough

Failure analysis:
a. Suction or discharge valve closed.
b. low inlet pressure.
c. Export line blockage.
Solution:
a. Confirm that the valve is closed.
b. Check if the valve is open.
c. Confirm that the discharge volume is normal.

3、Fault phenomenon: abnormal sound

Failure analysis:
a. large eccentric coupling or poor lubrication.
b. Motor failure.
c. reducer abnormal.
Solution:
a. correct or fill with grease.
b. Check the motor.
c. Check the bearings and gears.

4、Fault phenomenon: the current is too large

Failure analysis:
a. Export pressure is too high.
b. melt viscosity is too large.
c. poor shaft seal assembly.
Solution:
a. Check downstream equipment and pipeline.
b. Check the viscosity.
c. Check the shaft seal and adjust it appropriately.

5、Fault phenomenon: pump suddenly stop

Failure analysis:
a. Power failure.
b. Motor overload protection.
c. Coupling damage.
d. Export pressure is too high, interlock reaction.
Solution:
a. Check the power supply.
b. Check the motor.
c. Open the safety cover and check the coil.
d. Check the instrument interlocking system.

Through the above analysis, we can find that there may be many reasons for the failure of vertical centrifugal pumps in the process of use, because of the special nature of the use of vertical centrifugal pumps, the workers need to consider more in the face of vertical centrifugal pump failure occurs. Hope the above vertical centrifugal pump failure solutions can provide help for new users.