The basic structure of a centrifugal pump

The basic structure of the centrifugal pump is composed of six parts, namely the impeller, the pump body, the pump shaft, the bearing, the sealing ring, and the stuffing box.

(1) The impeller is the core part of the centrifugal pump, its speed is high and the output is large, and the blades on the impeller play a major role, and the impeller must pass the static balance test before assembly. The inner and outer surfaces on the impeller need to be smooth to reduce frictional losses from the water flow.

(2) The pump body is also called the pump casing, which is the main body of the pump. It plays the role of support and fixation, and is connected with the bracket where the bearing is mounted.

(3) The function of the pump shaft is to connect the coupling with the motor to transmit the torque of the motor to the impeller, so it is the main component to transmit mechanical energy.

(4) The sliding bearing uses transparent oil as lubricant, and the oil is added to the oil level line. Too much oil will seep out along the pump shaft, too little bearing will overheat and burn out and cause accidents! During the operation of the water pump, the temperature of the bearing is up to 85 degrees, and the general operation is about 60 degrees.

(5) The sealing ring is also known as the leakage reduction ring.

(6) The stuffing box is mainly composed of packing, water seal ring, packing barrel, packing gland and water seal pipe.