If the pump impeller rotates reversely, what effect will it have on the motor?

Has no effect on the motor. The motor can rotate in both forward and reverse directions depending on the wiring. It is considered to have no impact on the motor.

It has a great impact on the working performance of the pump, because the lead angle of the pump impeller is designed to rotate forward. Never reverse:handshake

Agree with the above. However, if the impeller nut does not have a good anti-loosening device, the nut will inevitably loosen and then. . . . . Even if you don’t talk about it, LZ should understand: lol

It has no effect on the motor for the following reasons: 1. The motor is generally equipped with two deep groove ball bearings, which mainly bear radial force and can also bear a certain axial force. Deep groove ball bearings have no direction requirements. ； 2. The connection between the motor and the pump is not allowed to bear large axial force ；

You are probably not talking about a centrifugal pump. Because the centrifugal pump reverses the medium, it will not flow back. It's just that the flow and pressure are reduced, which affects the pump's operating efficiency and causes some mechanical failures such as loose nuts. The current of the motor should be reduced at this time. There is nothing else, so it is not affected.

The backflow of the medium has no impact on the motor, but has a great impact on the pump. For example, the back cap will loosen, and the bearing of the magnetic pump will be damaged.

It has a great impact on the working performance of the pump, because the lead angle of the pump impeller is designed to rotate forward.

It has no effect on the electrode, but it has an effect on the pump.

Generally speaking, it does not have much impact on the motor.

It has no effect on the motor, but it will loosen the impeller cap.

When fluid is poured back, the pump will reverse direction, theoretically allowing the motor to act as a generator, producing alternating current. In fact, if the reverse rotation speed is not high, it will have no impact on the motor, but it will have a greater impact on the pump, such as loose nuts, etc.

I heard that the speed used for reverse rotation of the pump is 10-100 times that of normal operation: L Very* * , if it is reversed, it will cause the motor to smoke, and a fire has occurred in our factory. The bearing broke. If the motor was driven one meter away, the bearing burned red.

Reverse rotation turns the motor into a generator, generating reverse current and heating. The biggest hidden danger is burning the motor.

Yes, it should be able to generate some electricity.^_^.

Will it affect both the pump and the motor?

It will definitely have an impact on the pump. As for the motor, it should be fine if it doesn't overspeed. The company once had a pump where the motor balance weight fell off due to reverse rotation.

This post was finally edited by my11stone on 2012-9-26 12:49. I agree with your point of view. I also have the following analysis. Please give me your advice.: When the pump is first started, the backflow of fluid will theoretically cause the motor to act as a generator, producing alternating current. When the fluid fills the pump suction pipe, the suction pipe is full of flow. Although the water pump impeller is reversed, the water pump forcefully pumps the fluid in the pool into the pipe network. Because the impeller lead angle is reversed, the pumping efficiency decreases and the flow rate decreases. The resistance of the water in the pool increases due to overcoming the backflow of fluid from the pipeline. The water pump needs to increase the pressure head. The fluid at the impeller is constantly turbulent and agitated, cavitation increases, the liquid temperature increases, power consumption increases, and the pump shaft heats up. Therefore, running in reverse for a long time will burn the motor.

The situation you are talking about is that the motor's wiring is reversed, causing the motor to actively reverse. The problem in this post is the reversal caused by backflow.

If there is backflow, the impeller will fall off or even the shaft may break, which will make repairs troublesome. . . .