A screw vacuum pump is a dry, positive-displacement vacuum pump that uses a pair of counter-rotating, non-contacting screw rotors which continuously mesh, seal, convey, and discharge gas inside the pump chamber. By continuously removing gas from an enclosed space, it reduces the pressure below atmospheric—down to near-zero levels. Owing to its dry operation, wide operating pressure range, high efficiency, and low maintenance requirements, the screw vacuum pump has become the preferred alternative to traditional oil-sealed and water-ring technologies in pharmaceutical and chemical processing, food freeze-drying, lithium-battery and other new-energy manufacturing, semiconductor and photovoltaic production, and environmental-protection applications.
View More >