Screw vacuum pumps, with their unique oil-free compression design and outstanding performance, are increasingly becoming the standard solution for global industrial vacuum applications. This pump adopts two precisely meshing counter-rotating screw rotors. Through ingenious design, the gas is trapped between the rotors and gradually compressed, and finally directed to the exhaust port. This highly efficient process benefits from its non-mechanical contact operation mode, which completely eliminates rotor wear and ensures the purity and pollution-free nature of the conveyed medium.
In terms of performance, screw pumps demonstrate extensive adaptability, with an ultimate pressure of up to 10^-3 millibars, an operating range covering 103 to 10^-2 millibars, and pumping speeds ranging from 60 to 1200 cubic meters per hour. By matching with a Roots blower, the pumping speed can even be increased to 9,000 cubic meters per hour. Its significant advantages include high tolerance to water vapor and particulate matter, high-efficiency variable frequency operation, low maintenance costs, and the ability to handle light gases through gas ballasts. Despite its limitations in applications with extremely low pumping speeds, its high robustness and scalability set it apart in many harsh environments.
As a leading enterprise in the industry, Tianjin Shuangjin Pump Machinery Co., Ltd. has been committed to the research and development and innovation of screw pump technology since its establishment in 1981. The company's product line covers Single Screw Pump, Twin Screw Pump, Triple Screw Pump and five-screw pumps, etc. Relying on its strong R&D capabilities and multiple national patents, it provides highly reliable fluid solutions for fields such as metallurgy, food processing, vacuum coating and scientific experiments.
With the increasing demands for vacuum processes in industrial development, screw pumps, with their high efficiency, cleanliness and durability, are continuously driving the progress of key processes such as brazing, sintering, freeze-drying and steel degassing, making significant contributions to achieving the goals of green manufacturing and carbon neutrality.
Post time: Nov-25-2025