Common faults and Countermeasures of high temperature gear pump
The high temperature gear pump is a positive displacement pump, which is caused by the change of the volume of work caused by the interaction of the main and the driven gear. The volume of work by the pump body, the alveolar gear and bearing functions with side structure.
Common faults and Countermeasures of high temperature gear pump are as follows:
(1) the failure of the phenomenon: the pump can not be discharged
Fault causes: A, rotation direction; B, suction or discharge valve closed; C, inlet no material or pressure is too low; D, viscosity is too high, the pump can not inte
Countermeasures: A, B, confirmed the direction of rotation; confirm the valve is closed; C, check valve and pressure gauge; D, check the liquid viscosity, with a low speed according to the speed ratio of flow is, if there is insufficient inflow flow, and humidity sensor probe, stainless steel tube PT100 sensor, cast aluminum heater, heating coil fluid solenoid valve
(2) the failure phenomenon: the pump flow is insufficient
Fault reasons: A, suction or discharge valve closed; B, low inlet pressure; C, outlet pipeline blockage; D, packing box leakage; E, speed is too low
Countermeasures: A, B, make sure the valve is closed; check whether the valve is open; C, confirm the discharge is normal; D, fastening; leaked a lot leakage affects the production, operation should be stopped, remove the check; E, check the pump shaft actual speed;
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(3) fault phenomena: abnormal sound
Fault: A, coupling eccentric or poor lubrication, B C, gear reducer motor fault; anomaly; D, e, seal the improper installation of shaft deformation or wear;
Countermeasures: A, alignment or grease filling; B, check the motor; C, check the bearing and gear; D, check the seal; inspection e, parking (4) fault phenomenon: the current is too large
Fault: A, the outlet pressure is too high; B, the melt viscosity is too large; C, D, bad seal assembly; shaft or bearing wear; E, motor fault
Countermeasures: A, check the downstream equipment and piping; B, test viscosity; C, check the seal, adjust; check D, parking, hand drive vehicles are too heavy; E, check the motor
(5) the failure of the phenomenon: a sudden stop pump
Fault causes: A, power failure; B, motor overload protection; C, coupling damage; D, export pressure is too high, interlock response; E, pump into the abnormal; F, shaft and bearing stuck stuck
Countermeasures: A, check the power supply; B, check the motor; C, open the safety cover, barring examination; D check instrument interlock system; E, parking, and rotary car F, barring confirmation confirmation