Seven ways to solve the twin shaft shredder motor overheating

At present, there are many shredding machines, my company mainly produces twin shaft shredder machine, single shaft shredding machine, metal shredding machine, tire shredding machine and so on. However, there will be motor overheating when twin shaft shredder machine is used, so there are many factors for shredding mechanical and electrical motor temperature is too high. After the motor heating, the insulation temperature of the motor winding will rise, and the insulation reaction to high temperature is very strong, will accelerate aging, reduce the service life. If the temperature rises too high, it will make the insulation carbonization, lose the insulation effect, and the windings of the motor will short circuit and make the shredding machine fail. Therefore, the inspection, detection and protection of motor overheating faults are very important to reduce the accident rate, reduce accident loss and improve the economic benefit of enterprises. 

So, how should we know the motor overheating phenomenon:

1. Thermometer method: the temperature rise of the motor is measured directly with a thermometer

2. Handle method: touch the specified part of the motor by hand, and estimate the motor temperature according to the strength of the handle heat

3, resistance method: the use of conductor resistance with temperature rise and increase the principle of measurement.

So how should we deal with the motor overheating of twin shaft shredder machine?

When the motor of the double shaft shredder overheats, it is necessary to deal with it from multiple aspects. Firstly, check the air gap between the stator and rotor of the motor. If it is too small, it may cause collision. The air gap can be adjusted by adding end caps. Secondly, abnormal vibration or noise in the motor can cause heating, and the vibration source should be excluded according to the specific situation, as vibration not only generates noise but also additional load. At the same time, it is necessary to check whether the bearing is working properly. The temperature of the bearing end face can be tested through temperature experience or a thermometer, and the bearing can be replaced if necessary. In addition, a high power supply voltage can increase the excitation current, causing the motor to overheat. It is necessary to adjust the power supply voltage to the rated range. If a winding short circuit, turn to turn short circuit, phase to phase short circuit or winding open circuit occurs, the machine must be stopped immediately for inspection and repair. Material leakage into the motor will reduce insulation performance, resulting in a decrease in allowable temperature rise, and the machine should be stopped immediately to remove foreign objects. Finally, in order to prevent the motor from running in phase loss, it is necessary to correctly select and install electrical appliances and protective devices, and strengthen the laying of feeders, regular inspections, and maintenance.