AUGER PUMP Russian patent published in 2009 - IPC F04D3/02 F04D29/66 F04D13/04 

FIELD: engines and pumps.

SUBSTANCE: invention is related to pump engineering. Auger pump comprises the main auger with bush installed on shaft. Shaft is arranged as hollow, inside additional shaft is installed, at the end of which from the side of inlet to the main auger there is additional auger installed, which performs functions of hydroturbine and pump. Inside additional shaft there is axial opening, having outlet to cavity upstream additional auger concentrically to its bush. Front end of additional auger bush is arranged as conical and is covered with conical cup with provision of annular gap. Between shaft and additional shaft there is at least one intermediate bearing. One or all intermediate bearings are arranged as magnetic.

EFFECT: improvement of pump anti-cavitation properties and increase of its efficiency factor.

4 cl, 3 dwg