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Rotary mechanical face seal for ship's propeller shaft - has wedging ring operating between annular surfaces with resilient face
Rotary mechanical face seal for ship's propeller shaft - has wedging ring operating between annular surfaces with resilient face
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机译：船用螺旋桨轴的旋转式机械端面密封-楔环在具有弹性端面的环形表面之间运行
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摘要
The axially movable seal face (9) of a rotary mechanical face seal e.g. for a ship's stern shaft, is sealed to its associated structure (3) and at the same time loaded axially, by the wedging action of a ring (11). This is urged radially between two oppositely inclined annular surfaces on bodies forming part of or associated with the member and the structure, either the ring or the surfaces or both being of resilient material. The ring could be a rubber O-ring (11) and the surfaces could be two further O-rings (7, 8). Alternatively the ring could be rigid, or the ring could be resilient but the other two surfaces rigid. In a modification one of the surfaces extends at 90 deg. to the axis of the sealing assembly.
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