How to improve the life time of high temperature gear pump
CAS NO: 609-23-4,Molecular formula: C6H3I3O,CAS NO. 2100-25-6,Molecular formula: C10H13I Chemtarget Technologies Co., Ltd. , https://www.dgtbcb.com
　　
High-temperature gear pump consists of gear, shaft, pump cover, shaft seal and other components, all parts are made of suitable temperature-resistant materials. Pump operating parts are transported using its medium lubrication. High temperature gear pump (gear pump) for conveying solid particles and fibers, non-corrosive high temperature liquid medium temperature up to 250 ℃, the viscosity of 5-1500 cst.
　　
Measures to improve the operating life of high-temperature pump:
　　
1, due to the pump body running at high temperature, it should be installed on the pipe when the cold installation hinged seat, to prevent the displacement pipe after warming.
　　
2, the coupling must be heat pump after heating to find the correct, in order to avoid running additional torque.
　　
3, CQB-G high temperature magnetic pump outlet pressure measuring point to set the interlock to stop the alarm, otherwise, once the discharge pipe blocked, easy to cause damage to the pump.
　　
4, the pump starts, no pressure in the export formation, you can not blindly speed, to prevent premature failure of the shaft or bearing.
　　
5, cleaning pipetting, do not pump delivery of cleaning fluid, the inner part should be removed, pipetting after the end of installation, so as to avoid foreign matter in the pump.
　　
6, the temperature of the jacket heat medium jacket can be slightly lower than the jacket before and after the heat medium temperature. Because the melt viscosity and shear rate as a decreasing function, the gear extrusion, bearing shear will make the melt temperature rise after the pump 3 ~ 5 ℃, reduce the heat medium temperature to prevent the melt degradation. Data show that by reducing the bearing zone temperature can greatly increase bearing capacity, do not need to replace the large-capacity pump, just by increasing the speed can be used gear pump output capacity increased by 50%.
　　
Gear pump common faults and countermeasures are as follows:
　　
(1) Symptom: Pump can not discharge
　　
Failure reasons: a, the opposite direction of rotation; 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 countermeasures: a, confirm the direction of rotation; Close; c, check the valve and pressure gauge; d, check the liquid viscosity, low-speed operation by the speed ratio of the flow rate is there, if the flow, then the inflow,
　　
(2) Symptom: Insufficient pump flow
　　
Reason for failure: a, suction or discharge valve is closed; b, the inlet pressure is low; c, the outlet pipeline is blocked; d, packing box leakage; e, speed is too low Countermeasures: a, confirm the valve is closed; b, c, confirm the discharge is normal; d, tighten; a large number of leaks affect production, should stop running, disassembly inspection; e, check the actual shaft speed;
　　
(3) Symptom: abnormal sound
　　
Fault reasons: a, coupling eccentric or poor lubrication b, motor failure; c, reducer abnormalities; d, shaft seal at the installation of bad; e, shaft deformation or wear countermeasures: a, find or fill the grease; b , Check the motor; c, check the bearings and gears; d, check the shaft seal; e, parking disintegration inspection (4) Symptom: