초록 ▼

A seal assembly primarily for use with the stern bearing of a ship comprises inner and outer face seal elements mounted on a rubber body for rotation with the propeller shaft. Any oil from the bearing which leaks past the inner element, or sea water which leaks past the outer element, enters a void

A seal assembly primarily for use with the stern bearing of a ship comprises inner and outer face seal elements mounted on a rubber body for rotation with the propeller shaft. Any oil from the bearing which leaks past the inner element, or sea water which leaks past the outer element, enters a void space formed by pockets in the rubber body. These pockets are separated by inclined vanes which act as a centrifugal pump to expel the leakage material through a passage in a seat for the seals. The assembly can also be used in other applications where the leakage material is corrosive or is likely to cause blockages.

대표청구항 ▼

A rotary mechanical seal assembly for keeping apart two fluids comprising a rotatable shaft, a seat member and a mounting member both surrounding said shaft, said mounting member carrying a pair of spaced apart face seals in rubbing contact with said seat member and defining between them an annular

A rotary mechanical seal assembly for keeping apart two fluids comprising a rotatable shaft, a seat member and a mounting member both surrounding said shaft, said mounting member carrying a pair of spaced apart face seals in rubbing contact with said seat member and defining between them an annular void space, one of said seat and mounting members being rotatable with said shaft and the other of said members being stationary with respect to said shaft, passage means in one of said members defining a drain passage leading into said void space, and pumping means rotatable with the shaft to pump to said drain passage any fluid which enters said void space.