There is a centrifugal pump, in the shaft end bearing inside the continuous fracture accident, I do not know why, please help prawns pointing kazakhstan!
2, the shaft heat treatment is not good, the shaft should be a quenching and tempering treatment, if not carried out, it will damage.3, the material itself has internal defects, the need for nondestructive testing to find internal causes.
Reason analysis:1, the main reason is the stress concentration in the material shaft, the cracks will appear in the long running shaft, and the crack will spread until the shaft breaks;
4, design manufacturers whether there are design flaws, and manufacturers to further explore;5, check whether the pump vibration, find the cause of vibration and solve.Centrifugal pumps are vertical, horizontal, single-stage, multi-stage, single suction, double suction, self suction and other forms. Centrifugal pumps use the impeller to rotate and cause centrifugal motion of the water to work. The pump before starting to pump shell and the water pipe filled with water, and then start the motor, the pump shaft to drive the impeller and water do high-speed rotation, centrifugal water movement, was thrown to the outer edge of the impeller, the pressure water pipeline flow through the volute pump into the pump shell.
