Study On Vibration Mechanism And Optimize Design Of Slide-valve Vacuum Pump

Slide-valve vacuum pump is a usual mechanical oil seal vacuum pump. It is a positive displacement vacuum pump, which can pump gas by rotating slide valve to change cubage of gas- absorbing cavity. It is applied to pump general gas or the gas containing a little condensable gas, so it is applied in many fields widely.Because the rotating centroid has biggish eccentricity and if which isn't mass balanced, it will generate more intense vibration. And the moving track of rotating centroid is a difficult close curve, so complete balance of slide-valve pump's inertia force is very difficult. It is always an important problem to balance the pump's vibration and reduce the yawp which it produced.A great deal study is done aimed at the problem of slide-valve pump's inertia force vibration, as that acquired definite effect in practical application. But in same time a series problem is brought to us, and these methods can not completely resolve the vibration problem.So, in the paper ,we use fashionable virtual prototype software-ADAMS to research the vibrating principium of the slide-valve pump.In the designing of the slide-valve pump,we set up the three-dimensional model of the slide-valve pump and developed the design procedures of the slide-valve pump by using it's development tool-Pro/TOOLKIT.In optimization design of the slide-valve pump, we break through the usual method of adding outer clump weight or balance wheel, and adopt the method of changing the inner structure and add inner clump weight to optimize the pump's vibration balance. The result indicate that by using this method, the dynamic balancing of slide-valve inertia force can got improved effectively.