FACE SEAL FOR WORKING WHEEL OF CENTRIFUGAL PUMP Russian patent published in 2006 - IPC F04D29/16 

FIELD: mechanical engineering.

SUBSTANCE: face seal comprises working wheel that is provided with driving and driven disks and is mounted in the housing and two contact rings. One of the rings is secured inside the housing, and the other one is movable and is mounted in the ring groove made in the driven disk. The movable ring has radial grooves that are provided with sloping surface and that receive metallic balls. The movable ring has pins whose free ends are set in the longitudinal grooves made from the inside of the ring groove of the driven disk.

EFFECT: prolonged service live.

1 cl, 2 dwg