Roots blower, a positive displacement blower, has an impeller end face and front and rear end covers. The principle is a rotary compressor which uses two lobed rotors to move relative to each other in the cylinder to compress and transport gas. This blower is simple in structure and convenient to manufacture. It is widely used in aquaculture aeration, sewage treatment aeration and cement transportation. It is more suitable for gas transportation and pressurization systems in low-pressure occasions, and can also be used as vacuum pumps.
