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High temperature of vacuum pump and its solution
Vacuum pump is the use of mechanical, physical, chemical or physical and chemical methods of pumping the container was evacuated to obtain the vacuum device or device. In the popular sense, vacuum pumps are devices that use a variety of methods to improve, create, and maintain a vacuum in a confined space. Next, Xiaobian introduce you to the causes of high temperature vacuum pump and solutions. Vacuum pump high temperature causes and solutions Introduction Vacuum pump high temperature reasons: 1 motor power is too large, resulting in the working current becomes larger, so the thermal power is also large; 2 fan blades, resulting in small air volume, so the heat can not keep up; 3 fan speed Low, so the wind pressure is low, the air volume is small; 4. Vacuum pump motor where the bus voltage is 380V, due to cable pressure drop and meet the distribution of uneven, the motor is applied voltage is lower than 380V, in order to ensure the same power to increase the current , Thermal power becomes larger; 5. Motor attached to the dirt, oil and other dirt, reducing the cooling function; Vacuum cooling method: motor power, speed and vacuum pump match, it is not changeable. Fan installed in the motor shaft, the motor speed determines the fan speed, it is also not be changed. Increasing the number of fan blades can play a role, but the blades increase, the original dynamic balance is broken, need to find a new dynamic balance point, and the new dynamic balance point is not easy to find, if the dynamic balance is wrong, it will cause Vibration of the motor. So generally take the following method: 1. The original fan cover lengthened 40cm, installed inside a fan diameter and axial flow fan, axial fan motor power requirements is 850w, speed 14889r / min, voltage 380v. The original fan is reserved. Axial flow fan set in another power control, the axial flow fan after the start of vacuum pump operation, the vacuum pump outage 30min axial flow fan outage, so that the main motor is fully cooled; 2. To keep the motor clean and clean the motor regularly Dirt, increase cooling capacity; 3. Increase the vacuum pump bus voltage to 400v. (Editor: Li Juan)