Three lobe roots blower is a kind of synchronous compression machine with two impeller. Each three-blade rotor is supported by two bearings. By using a pair of synchronous gears, the relative position of the two rotors remains unchanged. It is a volumetric blower with the characteristics of forced gas transmission.
applied range 
petrochemical, building materials, electric power, smelting, chemical fertilizer, mine, port, textile, food, papermaking,aquaculture and sewage treatment, environmental protection industry, and many other areas, mostly used for conveying air, after sealing can also be used to pump gas, hydrogen gas, acetylene, carbon dioxide and other inflammable, explosive and corrosive gas.