PUMPING UNIT AND PUMPING SYSTEM IN WHICH IT IS USED Russian patent published in 2011 - IPC F04D13/12 F04D1/04 E03B11/00 

FIELD: engines and pumps.

SUBSTANCE: pumping system includes tower installed at water intake point and containing inner part and water-containing part located on it, outlet pipeline connecting water-containing part and the tank located on the shore and suction pipeline interconnected with inner part and passing from lower section of tower to water intake point and having the upward bent end with safety casing, and pumping unit installed in the tower. The unit pumps the water entering the inner part through suction pipeline to water-bearing part. The unit includes rotating shaft vertically installed in tower; rotor including screw pump, centrifugal pump located on it and rotor drive installed in the tower. Screw pump has inner housing with flotation cavity installed so that it can slide along the shaft on support bearing, and outer housing enveloping the inner housing and separated from it with the specified distance, and many blades installed between inner housing and outer housing and forming spiral pump channel. Centrifugal pump discharges in radial manner the water pumped with screw pump.

EFFECT: higher water pumping efficiency.

6 cl, 8 dwg