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1. WO1996003583 - A PULP SLURRY-HANDLING, CENTRIFUGAL PUMP

Considered void:  19.03.1996
Publication Number WO/1996/003583
Publication Date 08.02.1996
International Application No. PCT/US1995/008933
International Filing Date 17.07.1995
Chapter 2 Demand Filed 19.02.1996
IPC
F04D 7/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
7Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
02of centrifugal type
04the fluids being viscous or non-homogeneous
F04D 29/44 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
40Casings; Connections for working fluid
42for radial or helico-centrifugal pumps
44Fluid-guiding means, e.g. diffusers
CPC
F04D 29/448
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
29Details, component parts, or accessories
40Casings; Connections of working fluid
42for radial or helico-centrifugal pumps
44Fluid-guiding means, e.g. diffusers
445especially adapted for liquid pumps
448bladed diffusers
F04D 7/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
7Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
02of centrifugal type
04the fluids being viscous or non-homogenous
Applicants
  • INGERSOLL-RAND COMPANY [US/US]; 200 Chestnut Ridge Road Woodcliff Lake, NJ 07675, US
Inventors
  • LUTHI, Oscar; US
Agents
  • WATKINS, Mark, A. ; Oldham, Oldham & Wilson Co. 1225 West Market Street Akron, OH 44313-7188, US
Priority Data
08/279,38525.07.1994US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A PULP SLURRY-HANDLING, CENTRIFUGAL PUMP
(FR) POMPE CENTRIFUGE DE MANIPULATION DE PATE LIQUIDE
Abstract
(EN)
Deflecting vanes (26, 28, 30), confronting the blades of the impeller-inducer (14a), and fixed in the housing, inhibit the formation of a vortex upstream of the impeller-inducer (14a). Too, the vanes direct the recirculation flow back into the central zone of the pump. The impeller-inducer is force-fed by its own recirculation.
(FR)
Des palettes de déviation (26, 28, 30) faisant face aux pales du rotor (14a), et fixées dans le logement, limitent la formation d'un vortex en amont du rotor (14a) à pales. De plus, les palettes retournent le flux de recirculation dans la zone centrale de la pompe. Le rotor à pales est alimenté de force par sa propre recirculation.
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