CENTRIFUGAL SUBMERGED PUMP UNIT Russian patent published in 1995 - IPC

FIELD: pump engineering. SUBSTANCE: outer diameters of blades and covering disk of the closed working wheel exceed the outer diameter of the driving disk. The disk is axially spaced from the housing. The blade are flat. The plane of each blade is inclined to the radial plane and the plane of the driving disk facing the covering disk. The plane of each blade is inclined backward from these plane and with respect to the direction of rotation of the wheel. Each blade has a part projecting into the axial space. The periphery part of the covering disk overlaps the driving disk defining the axial outlet of the wheel. The face surface of the periphery part of the covering disk is mounted with a spaced relation to the answered ring surface of the housing. The periphery part of the covering disk overlaps the outside diameter of the inlet parts of the blades of the side outlet. EFFECT: enhanced efficiency. 2 cl, 3 dwg