Measures to improve the operating life of BW insulation pump The disassembly and cleaning of BW insulation pump, rise and fall, start and stop should be strictly in accordance with the regulations to avoid undue losses. The data shows that by reducing the temperature in the bearing zone, the bearing capacity of the bearing can be greatly increased. Frequent maintenance of BW insulation pump helps to extend service life 1. Measures to improve the service life of BW insulation pump BW insulation pump disassembly and cleaning, rise and fall, start and stop should be strictly in accordance with the provisions to avoid undue losses. The data shows that by reducing the temperature of the bearing zone, the bearing capacity of the bearing can be greatly increased, there is no need to replace the large-capacity pump, and the output capacity of the gear pump can be increased by 50% simply by increasing the rotational speed. When the back pressure is reduced, the pressure of the stuffing box should be adjusted in time, otherwise the pump will take in air, the residual oil pump and the BW heat preservation pump will cause the strip to be broken, which will affect the pelletizing and cause the pelletizer to discharge.
Always check the temperature of the heat medium jacket, and the temperature of the main body and the front and back covers should be the same. The outlet pressure measuring point should be set to stop the alarm. Otherwise, once the discharge pipe is blocked, the pump body is easily damaged. When cleaning the pipetting, do not use the pump to transport the cleaning solution. The internal parts should be removed and installed after the pipetting is completed to avoid foreign matter in the pump.
Every time the output is increased, the output, rotation speed, outlet pressure, and current value at that time should be recorded, and the data before and after should be compared and carefully analyzed, so as to find the abnormality as soon as possible, and timelyly handle the daily maintenance operation management of the BW thermal insulation pump. 1. In the event of power outage or heat medium circulation interruption of more than 3Omin, the pump should be disassembled and reassembled to avoid damage to the high temperature pump caused by poor lubrication of the melt due to solidification and cracking.
2. The melt filter behind the BW heat pump outlet should be replaced regularly. Do not operate at high pressure or even pressure limit for a long time.
3. Precautions when starting the BW heat preservation pump. When there is no pressure at the outlet, do not blindly increase the speed to prevent premature damage of the shaft or bearing.
4, regular replacement of bearings can save maintenance costs. (3) Packing shaft seal pump with negative population pressure should keep the pressure at the stuffing box higher than the external atmospheric pressure. Because the melt viscosity and the shear rate are in a decreasing function, the extrusion of the gear, the shearing of the bearing will cause the melt temperature to rise by 3 to 5 ° C after the pump, and lowering the temperature of the heat medium can prevent melt degradation.
5. Speed ​​up slowly. Do not let the front and rear pressure rise sharply. Botaibang will not damage the bearing or block the lubrication passage. 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 BW heat preservation pump can re-use the shaft after grinding, and only replace the bearing, which can extend the life of the pump shaft by 8 to 10 years.
6. The temperature of the heat medium jacket of the pump body can be slightly lower than the temperature of the heat medium of the front and rear casings.
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