Gas-Cooling Roots Pump

During decarburization processes the vacuum system must operate very long time in a rough pressure range. An efficient gas-cooling is necessary as the extracted hot gases would or else overheat the filter and vacuum program.

With the development of technology and the improvement of item quality in aerospace, energy, iron and steel processing, pharmaceutical and chemical industries, these industries have to obtain a certain vacuum environment. Simultaneously, the vacuum system used by these industries is continuously raising, and the vacuum degree is continuously increasing. Furthermore, the state’s environmental safety, energy saving and three wastes discharge to the above-described industries, etc. Certain requirements are more stringent. At present, the Gas-Cooling Roots Pump prevailing dry vacuum pumps in the marketplace, such as screw vacuum pumps and claw vacuum pumps, cannot meet up with the requirements of oil-free large pumping rate clean vacuum environment proposed by these industries due to the restrictions of pumping rate characteristics and structural system.

Because of the shortcomings of the prevailing technology, the technical problem to be solved by the utility model is to provide an all-gas-cooled vacuum system to satisfy the use in a clean vacuum environment with large oil-free pumping speed.