按罗茨原理工作的变容泵目前国内主要应用在两个领域:一是入口压强 760托,出口压强0.1～2公斤/厘米2做罗茨鼓风机使用;二是在入口压强为10～10-2托范围内与前级泵配合做机械增压泵使用;除此而外罗茨泵还有第三个重要的应用,即通过水封或油封,使罗茨泵直接对大气排气在入口压强 According to Roots principle of variable displacement pump currently used mainly in two areas: one is the inlet pressure of 760 torr, the outlet pressure of 0.1 to 2 kg / cm 2 Roots blower to do; the second is the inlet pressure of 10 ~ 10- 2 Torr range with the previous stage pump with a mechanical booster pump; In addition to the Roots pump there is a third important application, that is, through the water seal or seal, the Roots pump directly to the atmosphere at the entrance of the exhaust pressure