Measures to improve the running life of gear pump: â… . Because the pump body runs at high temperature, the hinge should be set on the pipe when cold to install, to prevent the pipe displacement after temperature rise. â…¡. Coupling must be heat pump body heat after correction, in order to avoid running additional torque. â…¢. Pump outlet pressure measuring point to be set to stop interlocking alarm, otherwise, once the discharge pipe blocked, easy to cause damage to the pump. â…£. When the pump is started, it can not be speed-raised blindly when there is no pressure in the outlet to prevent premature failure of the shaft or bearing. â…¤. When cleaning pipetting, do not pump the cleaning fluid, should remove the inner parts, pipetting after the end of installation, so as to avoid the pump mixed with foreign matter. â…¥. The temperature of the pump heat medium jacket can be slightly lower than the heat medium temperature of the jacket tube. 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%. â…¦. Speed ​​to be slow, do not make the sharp rise in pressure before and after, so as not to damage the bearings or melt block the lubrication channel. â…§. After the pump outlet melt filter to be replaced regularly, do not long-term high pressure and pressure limit to run. â…¨. Regular replacement of bearings can save maintenance costs. When it is found that the amount of wear on the inner surface of the shaft or bearing is close to the thickness of the hardened layer, the shaft can be polished and reused, replacing only the bearing. This prolongs the life of the shaft by 8 to 10 years. â…ª. In case of power failure or interruption of heating medium circulation more than 3Omin, the pump should be disassembled and cleaned before reassembly to avoid damage to the pump due to poor lubrication caused by cracking, such as cracking.
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