(1) Symptom: gear pump can not discharge the cause of the malfunction: a, the direction of rotation is reversed; b, suction or discharge valve is closed; c, the inlet without material or pressure is too low; d, viscosity is too high, the pump can not bite material.
Countermeasures: a, confirm the direction of rotation; b, confirm the valve is closed; c, check the valve and pressure gauge; d, check the liquid viscosity, low speed operation according to the speed ratio of the flow rate appears, if the flow, then the inflow.
(2) Symptom: Insufficient flow rate of the gear pump. Cause of the malfunction: a. The suction or discharge valve is closed. B. The inlet pressure is low. C. The outlet pipe is blocked. D) The filler box is leaking.
Countermeasures: a, confirm whether the valve is closed; b, check the valve is open; c, confirm the discharge volume is normal; d, tighten; a large number of leaks affect production, should stop running, disassembly inspection; .
(3) Symptom: abnormal sound failure reasons: a, coupling eccentric or poor lubrication; b, motor failure; c, reducer abnormalities; d, shaft seal at the installation of bad; e, the shaft deformation or wear.
Countermeasures: a or find filling grease; b, check the motor; c, check the bearings and gears; d, check the shaft seal; e, parking disintegration inspection.
(4) Fault phenomenon: the current is too large Fault causes: a, the outlet pressure is too high; b, the melt viscosity is too large; c, shaft seal assembly bad; d, shaft or bearing wear; e, motor failure measures: a, check The downstream equipment and pipelines; b, test the viscosity; c, check the shaft seal, appropriate adjustments; d, check after parking, hand crank car is overweight; e, check the motor (5) Symptom: gear pump suddenly stopped Fault reason: a, power failure; b, motor overload protection; c, coupling damage; d, the outlet pressure is too high, interlocking reaction; e, bite abnormal pump; f, stuck with the shaft and bearing stuck.
Countermeasures: a, check the power; b, check the motor; c, open the safety cover, disk inspection; d, check the instrument interlock system; e, parking, reversing confirmation;Speciality Silica
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