What is the working principle of brush DC pump?

Disadvantages: as long as the motor rotates, the carbon brush will wear. When the water pump runs to a certain extent, the wear gap of carbon brush will become larger, and the sound will also increase. After several hundred hours of continuous operation, the carbon brush can not play the role of reversing.

Advantages: low price.

Working principle of Brushless DC pump

Motor brushless DC pump is composed of Brushless DC motor and impeller. The shaft of the motor is connected to the impeller.

Disadvantages: there is a gap between the stator and rotor of the water pump. If the water is used for a long time, the water will penetrate into the motor, and the motor is easy to burn out.

Advantages: the brushless DC motor has been standardized, a large number of specialized manufacturers, low cost, high efficiency.