Structural Composition Of Centrifugal Pumps

1. The impeller is the core part of a centrifugal pump, with high rotational speed and high output. The blades on the impeller play a major role, and the impeller needs to undergo static balance experiments before assembly. The inner and outer surfaces of the impeller are required to be smooth to reduce friction losses caused by water flow.
2. The pump body, also known as the pump casing, is the main body of the water pump. Plays a supporting and fixing role, and is connected to the bracket for installing bearings.
3. The function of the pump shaft is to connect the coupling with the electric motor, transmitting the torque of the electric motor to the impeller, so it is the main component for transmitting mechanical energy.
4. The sliding bearing uses transparent oil as a lubricant and is filled to the oil level line. Too much oil will seep out along the pump shaft, and too little bearing will overheat and burn out, causing accidents! During the operation of the water pump, the highest temperature of the bearings is 85 degrees, and generally operates at around 60 degrees.
5. Sealing ring, also known as leak reducing ring.
6. The packing box mainly consists of packing, water seal ring, packing cylinder, packing gland, and water seal pipe. The main function of the packing box is to seal the gap between the pump casing and pump shaft, preventing the water flow inside the pump from flowing outside or the air from outside from entering the pump, and always maintaining a vacuum inside the pump. When the friction between the pump shaft and the packing generates heat, it is necessary to use the water seal pipe to inject water into the water seal ring to cool the packing and maintain the normal operation of the water pump. So during the operation and inspection of the water pump, special attention should be paid to the inspection of the packing box. The packing should be replaced after about 600 hours of operation.