论文部分内容阅读
第三讲：机械真空泵（二）张以忱（东北大学）四、油封式旋转机械真空泵（一）油封机械真空泵工作原理用油来保持运动部件的密封、靠泵腔容积变化而实现抽气的机械真空泵统称油外机械真空泵。它们的工作原理都是使泵腔工作室容积机械地增大和缩小而抽气。当泵腔内工作室容...
Lecture 3: Mechanical vacuum pump (two) Zhang Yichen (Northeastern University) Fourth, the oil seal rotary machinery vacuum pump (A) Seal mechanical vacuum pump oil to keep moving parts of the seal, by pump volume changes to achieve mechanical vacuum pump Collectively referred to as oil mechanical vacuum pump. Their working principle is to make the pump chamber volume increases and decreases mechanically and exhaust. When the pump chamber capacity ...