During decarburization processes the Gas-Cooling Roots Pump china vacuum system needs to operate long time in a rough pressure range. An efficient gas-cooling is necessary as the extracted popular gases would or else overheat the filter and vacuum program.
With the development of technology and the improvement of item quality in aerospace, electric power, iron and steel processing, pharmaceutical and chemical industries, these industries need to obtain a specific vacuum environment. Simultaneously, the vacuum system utilized by these industries is certainly continuously raising, and the vacuum 
level is continuously increasing. Furthermore, the state’s environmental security, energy saving and three wastes discharge to the above-stated industries, etc. The requirements are more stringent. At present, the prevailing dry vacuum pumps available, such as screw vacuum pumps and claw vacuum pumps, cannot meet the requirements of oil-totally free large pumping speed clean vacuum environment proposed by these industries due to the restrictions of pumping quickness characteristics and structural system.
Because of the shortcomings of the prevailing technology, the specialized problem to be solved by the utility model is to supply an all-gas-cooled vacuum system to satisfy the utilization in a clean vacuum environment with huge oil-free pumping speed.