INCLINED ARCHIMEDEAN SCREW PUMP Russian patent published in 2009 - IPC F04D3/02 F04D13/04 F04D29/66 

FIELD: motors and pumps.

SUBSTANCE: invention relates to pump engineering. Inclined Archimedean screw pump contains main screw 2 with bush 3, installed in body 5 on hollow arbor 1. Inside the shaft 1 it is installed additional shaft 6, on the end of which from the input side into main screw 2 there are installed hydroturbine 8 and additional screw 9. To casing 5 there are attached input and output bodies 11, 13. On input body 11 before hydroturbine 8 it is installed ring header 17, cavity 18 of which is connected to channel 20 bypass with cavity 14 inside the output body 13 and annular slot 19 - with output into turbine 8. Between shaft 1 and additional shaft 6 it is installed at least one intermediate magnetic bearing 7.

EFFECT: invention is directed to improvement of anti-cavitation properties of pump and increasing of its coefficient of efficiency.

3 cl, 1 dwg