Vacuum pump in long-term use after the phenomenon of heating, which is caused by what reason? What is the effect of vacuum pump heating on production?

1、 Causes of fever

1. The amount of circulating water in the vacuum pump is too small. The circulating water has two uses: one is to cool the vacuum pump; the other is that water forms a water ring in the pump cavity under the rotation of the impeller, and the air compresses the air in the water ring under the rotation of the impeller.

2. The temperature of the gas absorbed is higher, and the vacuum degree of the circulating water is lower than 30 degrees. After continuous operation for one day, the vacuum pump is the same as the kettle for boiling water at home. The scale is generated in the pump. After the impeller is difficult to operate, the friction increases and causes heating.

2、 Exclusion method

1. If the motor passport is removed, whether the fan fin of the rotating motor can operate flexibly, that is, there is no scale. If it is difficult to operate, dismantle the exhaust pipe of the pump, and use a hand lamp to check whether there is scale inside. If the scale is generated, the impeller will be difficult to operate, and the motor will be burned, and the spring of mechanical seal will be easily locked on the shaft due to scale, and the end face will not be automatically replenished after the end face is worn, Cause leakage of mechanical seal and burn motor.

2. The vacuum pump is an air pump, which allows a small amount of liquid. If the material absorbed contains a large amount of water, a buffer tank should be installed in front of the pump. If a large amount of water is inhaled, the impeller will be broken.

3. The temperature of the gas absorbed by the vacuum pump is higher. Tap water is used as circulating water or the condenser is used to cool the gas.

Attention: the vacuum pump must be equipped with overload protector to prevent overload from burning the motor. The connecting pipe should not be thinner by 70%. If the pipeline is too thin and the drainage is not smooth, the motor will be overheated and over current.

In general, when we use the vacuum pump, we should find solutions according to these reasons, as well as the correct operation in the later use process.