How do three-cylinder dryer manufacturers solve the problem of heating of the dryer motor

How do three-cylinder dryer manufacturers solve the problem of heating of the dryer motor
The customer reported that the sand dryer motor overheated after long-term use. What is the reason and how to solve it?
Summer is here and sand dryers are at their peak production. During long-term high temperature and high-intensity work, the dryer motor is prone to overheating and burning the cable, resulting in short-circuit failure. In this case, the drying unit will not work properly.

The electric motor is the power source of the drying system of the drying device, and maintains the normal operation of the cylinder of the drying device. So if the motor fails with a short circuit, it's a very tricky problem. Two situations occur:
1. When the working current is 1.3 times of the rated voltage, when the rated output of the motor becomes lower, the speed ratio of the dryer cylinder decreases, and the heat transfer governor changes greatly in the low-speed state. As a result, all the drying happens. The deviation of the equipment transformer increases.
2. If the working voltage is the rated voltage, the working frequency of the sand dryer will be too low, the working current will become unstable, and there will be jitters before and after, which will damage the transformer and ammeter of the dryer.
Considering the above situation, the heat transfer rate regulating valve of the desiccant can be closed first to increase the working resistance. Subsequent restarts of the desiccant can reduce the excitation operating current of the motor and increase the speed ratio of the desiccant bucket when the initial conditions occur.
In fact, the problem of the sand dryer motor is a common topic, but it cannot be ignored, so it is necessary to carefully check whether the motor will heat up or short-circuit during operation. and other issues. Find an expert. Technicians will implement solutions.