WORKING WHEEL FOR FREE-VORTEX PUMP Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: centrifugal blades of the driving disk with the rim define centrifugal passages between the blades. Conical disk is coupled with the blades, provided with outside vortex blades, which define vortex passages, and has radius which is less than the inner radius of the rim. The inlet of the centrifugal passages is defined by the central part of the conical disk. The rim is arranged over the whole width of the working wheel at the outlet. The ring slot is made between the periphery of the vortex blades, vortex passages, and inner cylindrical surface of the rim. The inlet of the centrifugal passages is made as a row of through openings at the central part of the conical disk. EFFECT: improved design. 3 dwg