本实用新型的优点是体积小，它的体积比同流量自带电机 油气回收真空泵小百分之四十；
The flame-proof oil and gas recovery vacuum pump has the advantages of small volume, 40%smaller than an oil and gas recovery vacuum pump of the same flow which is provided with a motor.
简要介绍了济南分公司油气回收装置、 真空泵的工作原理以及安装与调试应注意的问题。
This paper introduces the vapor recovery equipment, theory of the vacuum pump and problems of its installation and debugging in general.
真空泵产生的负压是保证滤液回收系统的正确运行。
A vacuum pump creates negative pressure for correct operation of the filtrate recovery system.
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