Middle hollow vacuum butterfly valve body

The utility model relates to a middlemost vacuum butterfly valve body, which comprises a valve body with a valve hole. The utility model is characterized in that the rotating shaft whole point of the valve hole forms a plane structure. The utility model has the advantages that the butterfly valve body is matched with a middlemost vacuum butterfly valve plate of a rotating shaft, and has favorable sealing property when closed, and the butterfly valve plate can rotate flexibly and has homogeneous torque. Because the valve hole of the valve body has no entrance, no super strong resistance exists when the valve plate is opened and closed. Therefore, the reliability is improved, an obstruction surface is narrow when an oil path is opened, and the butterfly valve can be an ultrathin butterfly valve.