The basic structure of a centrifugal pump consists of eight parts, namely: impeller, pump body, pump cover, water retaining ring, pump shaft, bearing, sealing ring, stuffing box, and axial force balancing device.

The impeller is the core component of a centrifugal pump, featuring high rotational speed and large output force.

2. The pump body, also known as the pump casing, is the main body of the water pump. It serves a supporting and fixing function and is connected to the bracket where the bearing is installed.

3. The function of the pump shaft is to connect the coupling with the motor and transfer the motor's torque to the impeller. Therefore, it is the main component for transmitting mechanical energy

4. The sealing ring is also known as the leakage reduction ring.

5. The stuffing box is mainly composed of packing, which prevents the water inside the pump from flowing out and also stops the outside air from entering the pump. Always maintain the vacuum inside the water pump! When the pump shaft rusts against the packing and generates heat, water needs to be injected into the water seal ring through the water seal pipe to cool the packing!

6. Axial force balancing device: During the operation of a centrifugal pump, as the liquid enters the impeller at low pressure and exits at high pressure, the pressure on both sides of the impeller is unequal, generating an axial thrust towards the inlet direction. This can cause axial movement of the rotor, leading to wear and vibration. Therefore, an axial thrust bearing should be installed to balance the axial force.