This morning, I was repairing a magnetic pump. After disassembling it, I found that the positioning pins of the sliding bearings were worn out. After making new positioning pins and reinstalling everything, there was still no flow or pressure. The inner rotor had magnets – what could be the cause of this? All the experts
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The magnetic pump has no issues with pressure or flow rate
For the magnetic rotor, it might be weak magnetization or partial demagnetization.
I’ve confirmed that both the motor and the rotor are rotating, and the speed is fine.
If the internal and external magnets of a magnetic pump become decoupled from each other, the actual rotation speed of the impeller will not be equal to the rotation speed of the motor; in your case, simply replacing the internal and external magnets will resolve the issue
Is the motor current normal, or is it too low? The internal magnetic rotor isn’t rotating, right?
This post was last edited by smlx1978 on 2018-6-4 08:33: Motors and rotors, the rotor! That is, the impeller area. If idling is normal, try it again with water carrying the material!
Inlet valve not opened: victory:
In most cases, the internal magnetic rotor has been demagnetized.
Yes, there is uneven magnetic strength in certain areas of the inner rotor, or the magnetic strength is insufficient