Common Faults and Elimination Methods of NL Sewage Long Axle Mud Pump

No matter what type of machinery and equipment, are unable to avoid failure, NL-type sewage long-axis mud pump is no exception, then the NL-type sewage long-axis mud pump What are the common faults? What kind of method to exclude? Next to introduce you to NL-type sewage long-axis mud pump common failure and troubleshooting. NL-type sewage long-axis mud pump common fault and troubleshooting methods, does not start and run (a) reasons: 1, feed line has broken. 2, the voltage is too low. 3, no axial gap between the two half coupling and stuck. 4, impeller stuck by debris. 5, impeller and volute close. 6, nut failure peace key damage to the impeller. 7, the coupling key damage. (B) to exclude: 1, check the fuse and wiring fuse, and replace it. 2, increase the voltage or voltage rise and then use. 3, adjust the axial clearance between the two half coupling 0.5 mm. 4, remove debris. 5, re-assembly, separation impeller and volute. 6, install flat key and nut. 7, dress up flat key. Second, overload (a) reasons: 1, pump assembly improper rotation difficulties, foreign body stuck. 2, concentricity changes, bearing damage, shaft deformation. 3, spin the opposite. 4, low head, traffic is too large. (B) Remedy: 1, re-assembly, remove foreign objects. 2, modify the parts, exchange bearings. 3, change the motor rotation. 4, try to avoid prolonged use. Third, the lack of flow (a) reasons: 1, the mouth was blocked, Mud pit was less than deep, pump less than dung. 2, mud pipe blocked. 3, the motor speed is lower than the rated speed. 4, impeller broken. 5, head is too high, transported far. 6, travel to the opposite. 7, a larger leak. 8, around the impeller debris. 9, the media is too thick or not the road supply. (B) the exclusion method: 1, exclude the suction stopper, move the pump, the volute all buried in the mud dung. 2, check the pipeline, remove the block object. 3, increase the motor speed. 4, exchange impeller. 5, reduce head, shorten the delivery distance. 6, change the motor rotation. 7, check the cause of the leak, and replace the other pieces caused by the leak. 8, remove debris. 9, dilute medium, increase the supply. Fourth, noise and vibration (a) reasons: 1, impeller and volute friction. 2, the bearing is damaged or less oil. 3, pump shaft and motor do not mind, shaft bending. 4, nut loose. 5, there are debris in the volute. 6, there are hard objects in the working fluid. 7, there is air infiltration mouth. 8, pumping liquid temperature is too high. (B) to exclude: 1. Check the pump assembly and adjust it. 2. Exchange bearings or refueling. 3. Concentric, correct axis. 4. Tighten the nut. 5. Exclusion of debris. 6. Control into the pump debris standards, encryption filter. Deep buried volute. 8. Lower the temperature of the liquid. Extended reading: China Construction Water Exhibition water pump manufacturers rankings ptc exhibition motor top ten brands pump valve pipe fittings Show Information Industry Internet (Xiamen) Technology Co., Ltd. Asia Pump Network Editor: He Duanhui (QQ / WeChat:) http: // mj .liuti.cn / (Service Hotline:)

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