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Daily Maintenance of Horizontal Double Suction Centrifugal Pump
Release time:
2021-11-12
1. Use tools to scrape off the residual scale and rust on the inner and outer surfaces of the impeller, sealing rings and bearings, etc., and then clean them with water or compressed air and blow them off. 2. Clean the rust and dirt on each joint surface of the double suction pump shell. 3. Clean the water seal pipe and check whether the pipe is unobstructed. 4. Clean the bearing bush and bearing, remove dirt, and then clean the oil ring and oil level gauge and other components. Ball bearings should be cleaned with gasoline. 5. For parts that are not assembled temporarily, protective oil should be applied after cleaning. 6. The matching between the impeller and the shaft shall be H/h. When installing the impeller, the key and the keyway shall be in close contact. For the shaft diameter of the rotor part, the allowable bending shall be ≤ 0.013mm, for the large bending of the low-speed shaft, it shall be <0.07mm, and for the large bending of the company shaft, it shall be <0.04mm. H/h is used for assembling the shaft sleeve part and the shaft. For the shaft of the rotor part, the circular runout of the shaft diameter is not more than 0.013mm, the shaft sleeve ≤ 0.02mm, the impeller mouth ring ≤ 0.04mm, the impeller end face ≤ 0.23mm, and the shaft diameter at both ends ≤ 0.02mm. For centrifugal pumps with complex structures, the daily maintenance conditions of the horizontal double-suction centrifugal pumps are also inconsistent.
1. Use tools to scrape off the residual scale and rust on the inner and outer surfaces of the impeller, sealing rings and bearings, etc., and then clean them with water or compressed air and blow them off.
2. Clean the rust and dirt on each joint surface of the double suction pump shell.
3. Clean the water seal pipe and check whether the pipe is unobstructed.
4. Clean the bearing bush and bearing, remove dirt, and then clean the oil ring and oil level gauge and other components. Ball bearings should be cleaned with gasoline.
5. For parts that are not assembled temporarily, protective oil should be applied after cleaning.
6. The matching between the impeller and the shaft shall be H/h. When installing the impeller, the key and the keyway shall be in close contact. For the shaft diameter of the rotor part, the allowable bending shall be ≤ 0.013mm, for the large bending of the low-speed shaft, it shall be <0.07mm, and for the large bending of the company shaft, it shall be <0.04mm. H/h is used for assembling the shaft sleeve part and the shaft. For the shaft of the rotor part, the circular runout of the shaft diameter is not more than 0.013mm, the shaft sleeve ≤ 0.02mm, the impeller mouth ring ≤ 0.04mm, the impeller end face ≤ 0.23mm, and the shaft diameter at both ends ≤ 0.02mm. For centrifugal pumps with complex structures, the daily maintenance conditions of the horizontal double-suction centrifugal pumps are also inconsistent.
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