During decarburization procedures 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 incredibly hot gases would otherwise overheat the filter and vacuum system.
With the development of technology and the improvement of item quality in aerospace, electric power, iron and steel digesting, pharmaceutical and chemical industries, these industries need to obtain a particular vacuum environment. At the same time, the vacuum system used by these industries can be continuously increasing, and the vacuum level is continuously increasing. Furthermore, the state’s environmental protection, energy saving and three wastes discharge to the above-stated industries, etc. The requirements are more stringent. At present, the prevailing dry vacuum pumps out there, such as screw vacuum pumps and claw vacuum pumps, are unable to meet up with the requirements of oil-totally free large pumping rate clean vacuum environment proposed by these industries because of the restrictions of pumping quickness characteristics and structural mechanism.
Because of the shortcomings of the existing 
technology, the specialized problem to be solved by the utility model is to provide an all-gas-cooled vacuum system to fulfill the use in a clean vacuum environment with large oil-free pumping speed.