The bearing body is generally made of popular cast iron, and the bearing body is not in contact with the medium. If it is mainly used to assemble two pieces of bearing to carry the impeller of the main shaft and the heat transfer oil pump, the key point of the bearing body is whether the processing of the bearing positions on both ends is concentric and the degree of concentricity The unevenness directly affects the service life of the bearing, which is equivalent to directly affecting the service life of the heat transfer oil pump. The main positions of the spindle tempering measures are the bearing position, the seal position, and the shaft head and impeller positions. Another is that the main shaft of the heat transfer oil pump must be tested for grinding the shaft, diameter balance and dynamic balance. The purpose is to improve the wear resistance of various critical parts and the concentricity of the main shaft to improve the product quality of the heat transfer oil pump.
If the PTFE power seal is not beautiful, its sealing effect is better than the former, and it has excellent corrosion resistance. The error fallacy is that the shaft is too dead and the service life is long. However, once the heat transfer oil pump is leaking, it is generally In this case, the seal shaft of the pump shaft was worn and the shaft needs to be replaced.
The cost of using a bellows mechanical seal is too high, but the service life is longer than the first two, and it is troublesome to maintain or change. The last item is the impeller of the heat-conducting oil pump. Generally, cast steel or ductile iron is used. The key point is the machining process of the impeller and the balance of the impeller. Each impeller must be tested and calibrated with a dedicated impeller balancer after processing to ensure the diameter of the impeller. Balance and dynamic balance