The JZJQDP air-cooled Roots screw vacuum unit uses the ZJQ air-cooled Roots vacuum pump as the main pump and the DP screw vacuum pump as the front pump. Since the main pump is an air-cooled Roots pump, the unit can be started under a pressure difference of tens of kilopascals, further improving the unit's vacuum efficiency and shortening the vacuum time. At the same time, various control instruments can be selected according to different working conditions to achieve automatic start and stop, automatic overload and overheating protection of the unit. The unit also uses a screw vacuum pump that can work for a long time in the range of atmospheric pressure to tens of kilopascals as the front pump, so it can replace the vacuum unit that used water ring pumps, reciprocating pumps, water jet pumps and other vacuum pumps as the front pump. It can solve the pollution and waste gas recovery problems of traditional units, so it has great advantages in the pharmaceutical, chemical and other industries.

DIMENSIONS

· When used alone, the ultimate vacuum level can reach 150 mbar when discharged directly into the atmosphere.
· Multi-stage cascade connection or connection with other backing pumps can achieve medium vacuum ranges.
· A unique patented structure ensures the pump will not overheat or overload even when operating at high differential pressures and high compression ratios.
· The three-lobe involute profile and high-precision machining ensure smooth and quiet operation.
· The advanced balanced mechanical seal provides a more reliable sealing performance than traditional frame seals.
· The pump chamber is oil-free, suitable for pumping general air and various special gases.

PERFORMANCE CURVE

DIMENSIONS