1. The asphalt pump body operates at high temperature, and the hinge support should be set on the pipe during cold installation to prevent the pipe displacement after heating up.
2. The coupling must be thermally aligned after the pump body heats up to avoid additional torque during operation. Because melt viscosity is a decreasing function of shear rate, the extrusion of gear and shearing of bearing of asphalt pump will make melt temperature rise 3 ~ 5℃ after the pump, and reduce the temperature of heat medium can prevent melt degradation. When it is found that the wear of the inner surface of the shaft or bearing is close to the thickness of the hardened layer, the shaft can be used again after grinding, and only replace the bearing, which can prolong the life of the pump shaft for 8 ~ 10 years.
3, the melt filter behind the pump outlet should be replaced regularly, and do not run at high pressure or even the upper pressure limit for a long time.
4, in case of power failure or heat media cycle interruption more than 3Omin, the asphalt pump should be disassembled after cleaning, so as not to solidify due to melt. Cracking caused by poor lubrication of bearings and pump damage.
5, regular replacement of bearings can save maintenance costs.
6, the temperature of the pump body heat medium jacket can be slightly lower than the heat medium temperature of the front and back jacket.
7. When the asphalt pump is started, it is not allowed to speed up blindly when there is no pressure at the exit to prevent premature damage to the shaft or bearing.
8, speed should be carried out slowly, do not make the pressure before and after the sharp rise, so as not to damage the bearing or make the melt block the lubrication channel.
9. When cleaning pipetting, do not pump the cleaning liquid, remove the inner parts and install after pipetting to avoid mixing foreign matter in the pump. The data show that by reducing the temperature of the bearing area, the bearing capacity can be greatly increased, and the output capacity of the asphalt pump can be increased by 50% only by increasing the speed.
10, pump outlet pressure measurement point to set interlock stop alarm, otherwise, once the discharge pipe is blocked, easy to cause damage to the pump body.
