| 摘要 |
PROBLEM TO BE SOLVED: To improve a sealing characteristic of a ring-shaped sealing member which is used when the 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 extending through the opening.SOLUTION: A sealing member has 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 laminated in order from a side being in contact with an internal atmosphere of a casing. A cross sectional shape of the sealing member is designed to have a convexly curved center portion and both end portions in each of which at least two projection parts held between the casing and a clamping means of a connection portion are formed. By adopting this sealing member, a sealing characteristic at an opening of the casing where a connection portion of a rotation processing mechanism is arranged can be enhanced. In addition, degradation of the sealing characteristic due to any shake (vibration) which may occur during rotational movement of the casing can be suppressed. |
