Roots vacuum pump (also called mechanical vacuum booster), as the main pumping equipment to obtain medium and high vacuum, is a positive-displacement vacuum pump and an oil-free dry vacuum pump.
One-piece double impeller, impeller and shaft are cast in one piece. The rotor has internal straight-through cavity with optional sealing plate design.
• Special seal structure, the surface of the shaft in contact with the seal is polished to improve operating life and achieve zero leakage, eliminating cross contamination of oil and process gas.
• Synchronous gear is helical gear design, and installed at the drive end to reduce the distortion and deformation of the impeller, to improve the silence, stability and reliability.
• Double oil tank design can achieve sufficient lubrication, improve stability, optional cooling methods: air cooling, water cooling.
• Five point bearing/machine seal designs, multiple supports and seals for high reliability.
• Nitrogen gas barrier to block gas from entering the oil tank, prolong service life.
• Internal coating protection against corrosion, especially suitable for pumping out condensable, flammable, explosive and toxic gases.
• Large differential pressure up to 120 mbar.
• Optional nickel plating or PFA/PTFE coating of fluid contact.
• O-ring in the mechanical seal, option alfluoro rubber or perfluoroether rubber.
• High pumping speed design, up to 110,000m3/h inlet flow rate.
• Optional outer seal is mechanical seal and inner seal is oil slinger ring seal, also optional five mechanical seals plus labyrinth seal.
Address
No. 219, Shidai Road, Economic Development Zone, Ping'an Subdistrict Office, Changqing District, Jinan City, Shandong Province, China
