Roots vacuum pumpcooling device

Roots vacuum pumps are characterized by fast start-up, low power consumption, low operating and maintenance costs, high pumping speed, high efficiency, and insensitivity to small amounts of water vapor and dust contained in the pumped gas. In the pressure range of 100~1Pa, the extraction rate is large, and the sudden release gas can be quickly removed. The pressure management range time is just between the vacuum pump and the diffusion pump used in oil-sealed machinery. Therefore, it is usually connected in series between the diffusion pump and the oil-sealed mechanical vacuum pump to increase the pumping capacity in the medium pressure range. This is also called a mechanical booster pump.

Roots vacuum pumps are widely used in vacuum metallurgy smelting, degassing and steel rolling, as well as vacuum distillation, vacuum concentration and vacuum environmental drying technology in China's chemical, food and pharmaceutical industries. The vacuum pump accessory is a vacuum pump silencer used to control the noise pollution of the vacuum pump.

Roots vacuum pump air cooling: Roots vacuum pump can generate a lot of heat through social transportation and compression of gas, which we need to transfer from the rotor to the housing and dissipate. However, at low pressure, the heat transfer and convection of the gas are poor, so that the heat absorbed by the rotor is not easy to dissipate, and the rotor temperature is always higher than the shell temperature. Due to the thermal expansion of the different rotors, the gap between the rotor and the rotor system and between the rotor and the pump housing can be reduced, especially in the case of high pressure differences, especially for severe, even without causing the rotor to become blocked, resulting in damage to the pump. In order to make the Roots pump work under higher pressure, in order to further expand the scope of enterprise management and improve the reliability of the pump, it is necessary to remove the heat generated by the rotor system, that is, the rotor in the cooling process.

To understandRoots vacuum pumpThe nature of air cooling depends first on the flow rate of the Roots vacuum pump on the exhaust side. The suction gas in the Roots vacuum pump is compressed discontinuously, but abruptly. The inhaled gas is enclosed in the cavity with the rotation of the rotor, and is also enclosed in the cavity with the rotation of the rotor, so that the gas in the cavity suddenly communicates directly with the exhaust port. Due to the high gas pressure on the exhaust side, the gas is in the cavity of the exhaust port and is then driven out of the pump as the rotor rotates. This process has a total of four exhaust processes on each rotating two rotors.

It can be imagined from the above airflow that if the gas flowing back into the pump chamber each time is cold, a large amount of heat can be absorbed in the high-temperature pump chamber, and the heat absorbed by these companies will be continuously compressed in the rotor. Discharge, so that the purpose of cooling the rotor can be achieved.

　　Roots vacuum pumpAir through the cooling system is what we apply to analyze the above working principle. A dense cooling fin is arranged at the exhaust port of the pump. The cooling fin can be designed for cooling with a cold water pipe, or the installation and cooling water pipe can be directly affected at the exhaust port of the pump, so that the gas environment at the exhaust port will cool down. In this way, the cooling technology can effectively dissipate the amount of heat generated by the rotor of the Roots pump during the compressed gas process. And when the exhaust time learning pressure is relatively high, because the gas as the density of intellectual molecules, so that the heat transfer performance analysis to get a better, the cooling effect is better.

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