During decarburization processes the vacuum system must operate very long time in a tough pressure range. A competent gas-cooling is essential as the extracted scorching gases would or else overheat the filter and vacuum program.
With the development of technology and the improvement of product quality in aerospace, energy, iron and steel digesting, pharmaceutical and chemical industries, these industries have to obtain a specific vacuum environment. Simultaneously, the vacuum system utilized by these industries is usually continuously raising, and the vacuum degree is continuously increasing. Moreover, the state’s environmental protection, Gas-Cooling Roots Pump energy conservation and three wastes discharge to the above-mentioned industries, etc. The requirements are more stringent. At the moment, the existing dry vacuum pumps in the marketplace, such as for example screw vacuum pumps and claw vacuum pumps, cannot meet up with the requirements of oil-free large pumping quickness clean vacuum environment proposed by these industries due to the restrictions of pumping acceleration 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.