Centrifugal pump with configured volute

F - Mech Eng,Light,Heat,Weapons – 04 – D

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Details

F04D 29/44 (2006.01) F04D 7/04 (2006.01) F04D 29/42 (2006.01)

Patent

CA 2509841

A removable casing liner (10) in a centrifugal pump for processing heavy duty slurries containing abrasive particles has a selectively configured volute (60) which is asymmetrical in axial cross section along the circumference of the casing liner (10) from the cut water region to the throat region, the asymmetry being about a plane which radially bisects the casing (10) and volute (60) region. The liner (10) is particularly suitable for use in connection with an impellers (20) equipped with expelling vanes (50) for pumping out slurry from the seal face (62).

L'invention concerne un revêtement (10) de corps amovible situé dans une pompe centrifuge permettant de traiter des boues de haute tenue contenant des particules abrasives, qui possède une volute (60) configurée sélectivement. Cette volute présente une coupe axiale asymétrique le long de la circonférence du revêtement (10) de corps depuis la région de bec de volute jusqu'à la région gorge, l'asymétrie étant présente autour d'un plan qui coupe radialement le corps et la région de la volute (60). Ledit revêtement (10) peut être particulièrement utilisé avec une roue (20) équipée d'aubes d'éjection permettant d'extraire par pompage de la boue hors de la face du joint (62).

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