First, the mechanical seal assembly inspection: the most prone to failure is the mechanical seal part, often due to wear and tear, the mechanical seal is invalid, the seal chamber is filled with water. Firstly, the mechanical seal assembly was decomposed, and two sets of mechanical seals, skeleton oil seals, output shafts, bearings, housings and end caps were cleaned and inspected, and the relevant dimensions of the bearing housing and the output shaft were checked. The problem was found, indicating that the mechanical seal was intact and the possibility of failure was eliminated.
Second, the analysis and inspection of the gearbox: the gearbox of the equipment has high processing precision, good heat treatment, thorough cleaning of the gearbox, and careful inspection of the gears, gear shafts and bearings. It is found that the surface of the gear teeth is smooth, no pitting and crossover phenomenon, the gear meshing backlash is normal, the tooth profile has no obvious wear; the radial and axial clearance of each bearing is normal, and the inner and outer rings and the roller surface have no pitting spots, and the overall quality is good. The axial clearance of each axis is reasonable, the output shaft of the hand disc is free to move, there is no jamming phenomenon, and there is no abnormal sound. Then, the failure of the gearbox can be ruled out.
Third, the motor failure inspection, analysis and treatment: motor failure performance: before the motor is disassembled, perform a dry run to find out the problem. If the motor makes an abnormal sound, the vibration is very large; the shaft of the motor shaft emits a squeaking sound, and the motor runs for less than 2 minutes, and the shaft extension temperature reaches several tens of degrees, which is hot. The inner ring of the bearing produces pear-like pitting area due to pitting, the surface is rough, dull and dull, and the pitting hole can be clearly seen; the inner ring of the skeleton oil seal is broken; the inner ring of the bearing and the sleeve and the corresponding journal have ” Dark spots formed by running circles.
Nanjing lanshen Pump Corp.LTD., main environmental protection equipment includes water ring vacuum pump, submersible aerator, submersible mixer, submersible propeller, submersible sewage pump, plate and frame filter press, belt filter press, gas Flotation machine, scraper suction machine, aeration plate, aeration pipe, various anaerobic and aerobic fillers, and other environmental protection equipment for sewage treatment. The company has rich engineering design capabilities and on-site service and commissioning experience.