Using of the industry’s most advanced components reduces the pipeline and interfaces in the equipment to the minimum and 30% of the pipeline and interfaces is reduced as compared to the similar products, which greatly reduces the leakage possibility of cooling oil, improves the operation efficiency of the equipment further and facilitates the maintenance of the machine. The advanced and combined valve is selected and the high efficient and heavy duty air filter applicable to the mechanical equipment industry is equipped to facilitate the replacement by users, improve the work efficiency, reduce maintenance cost and ensure the quality of compressed air.