Seal assembly for closing a cavity, particularly in a rotary pump or compressor.

摘要

A seal assembly for closing a cavity between a rotor having an axial bore, a crankshaft extending through this bore and rotatable about an eccentric axis, and a stationary end member in which is journalled an end of said crankshaft.

The seal assembly (54) according to the invention comprises a disc (72) with a first resilient member (56) that engages the rotor surface (44) and a second eccentrically positioned resilient member (62) that engages a surface (65) on end member (38). Disc (72) which is attached to crankshaft (80) rotates with respect to both the rotor and end member to maintain a sealed cavity (55) even though the first and second resilient members (56 and 62) rotate on their respective sealing surfaces (44 and 65) with different revolutions per minute.

For use in rotary pumps or compressors.