POWER-OPERATED END FACE SEALING Russian patent published in 2002 - IPC

FIELD: sealing engineering. SUBSTANCE: power-operated end face sealing contains two sealing rings. One ring is connected to the first unit and put in a fixed position relative the rotation axis of the first unit. Second sealing ring is mounted for axial movement along the shaft and put in a fixed position relative the rotation axis. The second sealing ring is mounted to the shaft with corrugated member. First driving rim connected to the one end of the corrugated member radially presses it to the shaft providing driving and sealing contacts. Another end of the corrugated member contacts with second driving rim which radially presses the end of the corrugated member to the sealing ring providing driving and sealing contacts. The internal ends of the driving rims are of the same diameter and provided with axially arranged teeth. The teeth the driving rims are engaged to each other that allows the driving rims to move out. Torque force between the shafts and the second sealing ring provides reaction of the corrugated member and driving rims. Spring interposed between rims moves them apart and provides sealing contact between opposite surfaces of the first and second sealing rings. EFFECT: enhanced reliability of the sealing. 11 cl, 4 dwg