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1. (WO1991018209) LIQUID PUMP
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018209 International Application No.: PCT/GB1991/000790
Publication Date: 28.11.1991 International Filing Date: 20.05.1991
Chapter 2 Demand Filed: 13.12.1991
IPC:
F04D 1/02 (2006.01) ,F04D 7/00 (2006.01) ,F04D 29/12 (2006.01) ,F04D 29/18 (2006.01) ,F04D 29/44 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
1
Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
02
having non-centrifugal stages, e.g. centripetal
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
7
Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
08
Sealings
10
Shaft sealings
12
using sealing-rings
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
18
Rotors
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
D
NON-POSITIVE-DISPLACEMENT PUMPS
29
Details, component parts, or accessories
40
Casings; Connections for working fluid
42
for radial or helico-centrifugal pumps
44
Fluid-guiding means, e.g. diffusers
Applicants:
SWEENEY, William, Thomson [GB/GB]; GB
Inventors:
SWEENEY, William, Thomson; GB
Agent:
THOMPSON, George, Michael ; Alpha Tower Suffolk Street Queensway Birmingham B1 1TT, GB
Priority Data:
9011258.219.05.1990GB
Title (EN) LIQUID PUMP
(FR) POMPE POUR LIQUIDE
Abstract:
(EN) A centrifugal pump has a shaft (10) mounted on bearings (11, 12) in a housing and carries a rotor (22, 23) which in use directs liquid to an oulet (25). A metal to metal seal (17) protects the bearings from the liquid being pumped. Coolant for the seal is directed at the seal through passages (33) and the water collects in a collection groove and is returned to the exterior of the pump. Any of the liquid which is being pumped which may approach the seal is also collected in the groove and is led away before it can reach the seal.
(FR) Une pompe centrifuge comporte un arbre (10) monté sur des coussinets (11, 12) dans un carter, et un rotor (22, 23) qui, en cours d'utilisation, dirige le liquide vers une sortie (25). Une garniture métal-métal (17) protège les coussinets du liquide pompé. Du produit refroidissant destiné à la garniture est dirigé vers celle-ci par l'intermédiaire de passages (33), et l'eau est recueillie dans une rainure puis retournée vers l'extérieur de la pompe. Toute quantité de liquide en train d'être pompée qui s'approcherait de la garniture est aussi recueillie dans la rainure et éloignée de la garniture avant qu'elle ne puisse l'atteindre.
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, PL, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
AU1991078752