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Taiwan Sunhong gear pump operation and maintenance

Time:

2021-07-28

Taiwan Sunhong gear pump operation and maintenance 2 major steps

1. Starting:

(1) Check the tightness of all pipeline flanges and joints before starting.

(2) Rotating coupling, no friction and collision sound.

(3) The gear pump should be filled with delivery liquid for the first start.

(4) Fully open the valves in the suction and discharge pipelines before starting, and it is strictly forbidden to start with closed valves.

(5) After verifying the rotation direction of the motor, start the motor.

2. Parking:

(1) Turn off the group strategy motor.

(2) Close the inlet and outlet valves of the gear pump.

Common faults and maintenance methods of Taiwan Sunhong gear pump:

(1) Trouble phenomenon: the pump cannot discharge

Reasons for failure: a. The direction of rotation is opposite; b. The suction or discharge valve is closed; c. There is no material at the inlet or the pressure is too low; d. The viscosity is too high and the pump cannot bite the material.

Countermeasures: a. Confirm the direction of rotation; b. Confirm whether the valve is closed; c. Check the valve and pressure gauge; d. Check the viscosity of the liquid, whether the flow rate proportional to the speed appears when running at low speed. If there is flow, the inflow is insufficient.

(2) Failure phenomenon: insufficient pump flow

Reasons for failure: a. The suction or discharge valve is closed; b. The inlet pressure is low; c. The outlet pipeline is blocked; d. The stuffing box is leaking; e. The speed is too low.

Countermeasures: a. Confirm whether the valve is closed; b. Check whether the valve is open; c. Confirm whether the discharge volume is normal; d. Tighten; When a large amount of leakage affects production, stop the operation and disassemble for inspection; e. Check the actual speed of the pump shaft ;

(3) Failure phenomenon: abnormal sound

Causes of failure: a. Large eccentricity of the coupling or poor lubrication b. Motor failure; c. Abnormal reducer; d. Poor installation of shaft seal; e. Shaft deformation or wear

Countermeasures: a. Align or fill with grease; b. check the motor; c. check the bearings and gears; d. check the shaft seal; e. check the disassembly of the vehicle

(4) Fault phenomenon: excessive current

Causes of failure: a. The outlet pressure is too high; b. The melt viscosity is too large; c. The shaft package is poorly matched; d. The shaft or bearing is worn out; e. Motor failure

Countermeasures: a. Check the downstream equipment and pipelines; b. Check the viscosity; c. Check the shaft seal and adjust appropriately; d. Check after parking and check whether the hand crank is too heavy; e. Check the motor

(5) Trouble phenomenon: the pump stops suddenly

Reasons for failure: a. Power failure; b. Motor overload protection; c. Coupling damage; d. Excessive outlet pressure and interlocking reaction; e. Abnormal biting in the pump; f. Adhesion and jamming of shaft and bearing

Countermeasures: a. Check the power supply; b. Check the motor; c. Open the safety cover and turn the car for inspection; d. Check the instrument interlocking system; e. After parking, confirm the forward and reverse cranking; f. Confirm the cranking

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