During decarburization processes the vacuum system needs to operate long time in a tough pressure range. An efficient gas-cooling is essential as the extracted incredibly hot gases would otherwise overheat the filter and vacuum system.
With the development of technology and the improvement of product quality in aerospace, energy, iron and steel processing, pharmaceutical and chemical industries, these industries have to obtain a particular vacuum environment. Simultaneously, the vacuum system used by these industries is usually continuously raising, and the vacuum level is continuously increasing. Furthermore, the state’s environmental protection, energy Gas-Cooling Roots Pump china saving and three wastes discharge to the above-mentioned industries, etc. The requirements are more stringent. At present, the prevailing dry vacuum pumps on the market, such as screw vacuum pumps and claw vacuum pumps, cannot meet the requirements of oil-free large pumping rate clean vacuum environment proposed by these industries due to the restrictions of pumping velocity characteristics and structural mechanism.
Because of the shortcomings of the existing technology, the specialized problem to be solved by the utility model is to supply an all-gas-cooled vacuum system to satisfy the use in a clean vacuum environment with large oil-free pumping speed.