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The material used for the magnetic pump bearing is high-density carbon. If the pump is shut off or there is impurities in the pump, the bearing will be damaged. If the coaxiality between the inner and outer magnetic rotors of the cylindrical coupling is not guaranteed, Will also directly affect the life of the bearing.
(2) The magnetic pump has insufficient head.
The causes of this failure are: there is air in the conveying medium, the impeller is damaged, the rotation speed is not enough, the specific gravity of the conveying liquid is too large, and the flow rate is too large.
(3) The magnetic pump has insufficient flow.
The main causes of insufficient flow are: impeller damage, insufficient speed, too high lift, and debris in the pipe.
(4) The magnetic pump can't make the liquid. The magnetic pump can't produce the liquid. The pump is easy to appear. The reason is also more. First, check the pump's suction line for leaks. Check whether the air in the suction tube is exhausted. Whether the amount of liquid in the pump is sufficient, whether there is any debris in the suction pipe, check whether the pump is reversed (especially after the motor is replaced or after the power supply line is overhauled), and the pump should be sucked up. Is the height too high?
(5) The pump shaft of the pump shaft is made of 99% alumina ceramic. The main reason for the pump shaft breaking is that the pump is dry and the bearing is dry and the shaft is twisted. When the pump is opened, the pump can be opened. The main way to prevent the bearing from being worn seriously to prevent the pump from breaking is to avoid the empty running of the pump.
If the above check still can not be solved, the magnetic pump can be disassembled and checked to see if the pump shaft is broken. Also, check the moving ring of the pump. If the static ring is intact, can the whole rotor move in a small amount? If the axial movement is difficult, Check if the carbon bearing is too tightly coupled to the pump shaft.
It is worth noting that the pump can be repaired several times to find out the problem. It should be noted that the working of the magnetic coupling is normal. When considering whether the speed is enough, first check whether the speed of the motor itself is normal. You can use the tachometer to measure the motor. In the case of normal rotation speed, it is considered whether the slip of the magnetic coupling will occur.
Common faults and troubleshooting methods of magnetic pumps
(1) Magnetic pump bearing damage.