PARTIAL CENTRIFUGAL PUMP FOR PUMPING FLUIDS WITH SUSPENSION Russian patent published in 1994 - IPC

FIELD: pump engineering. SUBSTANCE: case is provided with outlet branch pipe and sheet. An open three-blades working wheel with radial blades secured to a hub is set on a shaft. The blades are convergent to periphery and have alternative swirling angle relatively axis of the wheel. Root section of the blade is located along the axis of the wheel and periphery section is turned about the axis at angle 65-70 so that at a constant width of the wheel side edges of the blades are straight lines. A part of the case periphery is spiral. An angle distance of the part is 70-90from the sheet in the direction which is opposite to the direction of rotation of the wheel. The outlet branch pipe is tangential and cylindrical. EFFECT: enhanced efficiency. 2 cl, 2 dwg