Six basic structures 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 The impeller is the core part of the centrifugal pump It has high speed and large output The blades on the impeller play a major role The impeller must pass the static balance test before assembly The inner and outer surfaces of impeller shall be smooth to reduce the friction loss of water flow 2 The pump body is also called pump shell, which is the main body of the pump The utility model has the function of supporting and fixing, and is connected with the bracket for installing the bearing 3 The function of the pump shaft is to connect the coupling with the motor and transmit the torque of the motor to the impeller, so it is the main part to transmit mechanical energy 4 Transparent oil is used as lubricant for sliding bearing, and oil is added to the oil level line Too much oil will leak out along the pump shaft, too few bearings will overheat and burn, causing accidents! During the operation of the water pump, the temperature of the bearing is high at 85 ° C, generally around 60 ° C 5 The sealing ring is also called the leakage reducing ring 6 The packing box is mainly composed of packing, water seal ring, packing barrel, packing gland and water seal pipe The function of the stuffing box is mainly to close the gap between the pump housing and the pump shaft, so as to prevent the flow of water inside the pump from flowing outside and the air outside from entering the pump Always maintain a vacuum in the water pump! When the pump shaft and packing friction produce heat, it depends on the water seal pipe to hold water into the water seal ring to cool the packing! Maintain the normal operation of the water pump Therefore, in the operation of the pump patrol inspection process of the stuffing box inspection is particularly important! The packing shall be replaced after 600 hours of operation.