Common Malfunctions of Centrifuge and Methods of Centrifuge Maintenance and Treatment(1)

In the process of using the centrifuge, it is necessary to strictly follow the operating manual of the centrifuge model. This is certainly to be followed, but the machine, like people, occasionally appears “sick “, that is, machine failure. In the face of failure is their own roll up sleeves to start repair? Or call the repairman? Today, according to the practice experience of centrifuge maintenance, we have sorted out some common problems and methods of centrifuge maintenance.

  1. Oil pressure fault problem. This kind of fault mainly shows that there is no oil pressure, too low oil pressure or too high oil pressure. Its treatment is:

(1) No oil pressure. Check whether the oil filter is blocked, whether the pressure gauge is damaged, whether the tubing and joints are connected and loose, broken, and whether the tubing is unblocked.

(2) Oil pressure is too low. The normal outlet oil pressure of the centrifuge in this coal preparation plant is 3.0~3.5 bar, If the oil pressure is too low, check whether the suction pipe from the oil pump passing through the filter to the oil tank is unblocked; check whether the oil line is leaking; check whether the coupling between the motor and the oil pump shaft is damaged, otherwise replace the coupling; whether the oil pump is damaged, otherwise replace the oil pump.

(3) Excessive oil pressure. When the oil pressure of the centrifuge is too high, check whether to add appropriate mechanical oil to the tank according to the requirements of the equipment usage instructions; check whether each pipeline is blocked, if there is a blockage problem, use compressed air to clean the sundries in the pipeline.

B. Excessive vibration fault. The problems of excessive vibration during the operation of the centrifuge are mostly caused by incorrect installation, blocking deformation of the sieve basket, blocking of the coal channel between the sieve basket and the scraper, and loosening of the bolts. The solutions are as follows: check whether the sieve basket is blocked, worn out or deformed; check whether the spring of the vibrator is aged; check whether there is a fine coal accumulation on one side of the sieve basket; check whether the wedge sieve basket is damaged, deformed or unbalanced; check whether the anchor bolt is corroded and firm; check whether the bearing is damaged and replace the bearing if it is damaged; if the new vibrating motor is replaced, check whether it is consistent with the load of the replaced motor.  And to match the other side of the motor, the two motors should be assembled the same.

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