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(1) Symptom: The gear pump can not discharge the cause of the malfunction: 1. The direction of rotation is opposite; 2. The suction or discharge valve is closed; 3. The inlet is empty or the pressure is too low; 4. The viscosity is too high, ) Symptom: abnormal operation of the gear pump Fault Reason: 1, the coupling eccentric or poor lubrication 2, motor failure; 3, reducer abnormalities; 4, poor installation shaft seal; 5, shaft deformation or wear (c) Symptom: gear pump suddenly stopped Fault reasons: 1, power outage; 2, motor overload protection; 3, coupling damage; 4, the outlet pressure is too high, interlocking reaction; (4) Failure phenomenon: insufficient gear pump flow Failure causes: 1, suction or discharge valve is closed; 2, the inlet pressure is low; 3, the export pipeline plugging; 4, stuffing box leakage; ) Symptoms: Other causes of failure reasons: 1, the outlet pressure is too high; 2, the melt viscosity is too large; 3, shaft seal assembly bad; 4, shaft or bearing wear; 5, motor failure
Ultrasonic Flow Meters,ultrasonic water meter,portable flow meter,ultrasonic meter
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