AUGER CENTRIFUGAL PUMP Russian patent published in 2010 - IPC F04D1/04 F04D29/16 F04D9/04 

FIELD: engines and pumps.

SUBSTANCE: proposed pump comprises housing 1, impeller 2, auger 3, floating rings 4, and front sealing collar 5 of impeller 2. Said collar 5 has main 6 and additional 7 groove seals that form intermediate space 8 there between. The latter extends all over the length of auger 3, and, on the side opposite aforesaid groove seals 6, 7, communicates, via radial bores 9, with inlet 10 of auger 3. Lateral side 11 of intermediate space 8 can have helical ribs 12.

EFFECT: higher reliability, simplified design.

2 cl, 1 dwg