Usage of centrifugal pump

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

1. Impeller is the core part of centrifugal pump. It has high speed and high output. The blades on the impeller play an important role. The impeller should pass the static balance test before assembly. The inner and outer surface of impeller is required to be smooth to reduce the friction loss of water flow.

2. Pump body also known as pump shell, it is the main body of the pump. It plays a supporting and fixing role and is connected with the bracket for installing the bearing.

3. The function of the pump shaft is to connect the motor with the coupling, and transmit the torque of the motor to the impeller, so it is the main part of transferring mechanical energy.

4. The sliding bearing uses transparent oil as lubricant. Add oil to the oil level line. Too much oil will seep along the pump shaft, too little bearing will overheat and burn out, causing accidents! In the process of pump operation, the temperature of bearing is the highest at 85 degrees, and generally it is about 60 degrees.

5. Sealing ring is also called leakage reducing ring.

6. Stuffing box is mainly composed of packing, water sealing ring, packing barrel, packing gland and water sealing pipe. The function of the stuffing box is mainly to close the gap between the pump shell and the pump shaft, so as not to let the water flow in the pump to the outside, and also to prevent the outside air from entering the pump. Always keep the vacuum in the water pump! When the pump shaft and packing friction heat, rely on the water seal tube to hold water to the water seal ring to cool the packing! Keep the pump running normally. Therefore, in the process of circulating inspection of pump operation, the inspection of stuffing box should be paid special attention to! The packing should be replaced after 600 hours of operation.

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