ROLLER-BLADE HYDRAULIC MACHINE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: arc-like working space of unitized housing is defined by side plates and radial lining. Two locks are set in the longitudinal sockets. A shaft provided with three-blade rotor is mounted for synchronous rotation together with the locks. A seal is positioned in the lining and side plates. The locks are arranged symmetrically with respect to the longitudinal axis of the housing. The lining is provided with radial openings, and side plates have axial openings. The openings are connected with the working space of the housing to define sector relief zones. A combined seal is constructed as face seal made up as a float disk and gasket seal which are mounted on the shaft in series from the side of one of the face covers. There is a drain axial opening in the disk. EFFECT: enhanced efficiency. 3 cl, 2 dwg