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1. How does the Roots blower work?The three-lobe Roots blower is a two-impeller synchronous compression machine. Each three-blade rotor is supported by two bearings, and a pair of synchronous gears are used to keep the relative positions of the two rotors constant. It is a positive displacement blower with forced gas transmission characteristics. As a rotary machine, it has relatively stable working characteristics. There is a small gap between the rotor and the rotor, the rotor and the pump body, and between the rotor and the side cover. Therefore, there is no friction in the working chamber,...