Rotary seal assembly

Details Rotary seal assembly Rotary seal assembly

F - Mech Eng,Light,Heat,Weapons

16

J

277/40, 277/43

F16J 15/16 (2006.01) F04D 29/10 (2006.01) F16J 15/36 (2006.01) F16J 15/40 (2006.01)

Patent

CA 1226882

Abstract The rotary seal assembly is used for sealing a rotating shaft, such as the shaft of a centrifugal pump. The assembly has a first sealing element fast on the shaft and d second sealing element arranged non-rotatably but axially movably next to the first element. On that side of the elements towards the pressure fluid which is to be sealed, there is a barrier, and there is an inlet for pressurized service liquid into the annular space between the elements and the barrier. The pressure of the service liquid forces the second element into sealing contact with the first and also provides a liquid barrier separating the elements from the pressure fluid which is being sealed. This feature is useful when abrasive slurries are being pumped, since the slurry is refused access to the elements.

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