AUGER CENTRIFUGAL PUMP Russian patent published in 2010 - IPC F04D9/04 F04D13/04 

FIELD: engines and pumps.

SUBSTANCE: invention relates to pump production. Auger centrifugal pump comprises impeller with hub with hollow main shaft 1 attached to hub end face. Said hollow main shaft houses extra shaft 6 running in two bearings 7, 8. One extension of shaft 6 accommodates auger 9, while opposite extension of said shaft is furnished with thrust collar 11. Pump inlet has toroidal casing 28 with chamber 29 and hydraulic turbine vane guide 30. Auger ring 10 accommodates hydraulic turbine blades 27. Pump outlet communicates, via pipeline 31 with chamber 29 of toroidal casing 28. Impeller hub 3 has holes 18. Seal 34 is arranged between shafts 1, 6, while main shaft 1 has bearing lubrication holes 33.

EFFECT: improved cavitation properties.

2 cl, 1 dwg