WORM CENTRIFUGAL PUMP Russian patent published in 2009 - IPC F04D9/04 

FIELD: engines and pumps.

SUBSTANCE: invention relates to pump production and can by mainly used in turbopump unit of liquid propellant engines. The proposed pump comprises housing, worm with a sleeve and impeller fitted on the pump shaft. Aforesaid sleeve has a taper section, while the impeller incorporates a hub with inner chamber. A conical magnetic clutch is arranged between the said tapered section and impeller. Two magnetic bearings are located between the shaft and worm. The latter is arranged to move axially and spring-loaded towards side opposite the pump inlet. The spring is arranged inside the impeller hub and thrusts, on the one side, upon the hub face and, one the other side, upon worm flange. Impeller hub is flange-mounted on the shaft, the flange being furnished with through holes.

EFFECT: improved pump cavitation properties.

3 cl, 1 dwg