Sealing mechanism of a rotation processing apparatus

摘要

The object of the present invention is to provide an improved sealing property when a ring-shaped sealing member seals a gap between an opening of a casing serving as a pressure vessel and a connection portion of a rotation processing mechanism, which extends through the opening. The sealing member a three-layer structure in which a layer of a fluorine-base resin material, a layer of a rubber-base resin material and a base fabric of a nylon-base material are deposited in that order from a side contact with an internal atmosphere within the casing and the cross sectional shape of the sealing member is designed to have a convexly curved center portion and the opposing portions on both side of the central portion, so that the sealing property at the opening of the casing where the connection portion of the rotation processing mechanism can be enhanced. In addition, the degradation of the sealing property due to any shakes (vibrations) which may occur during the rotational movement of the casing.