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1. US20030165380 - Self-priming pump

Office
United States of America
Application Number 10332204
Application Date 03.01.2003
Publication Number 20030165380
Publication Date 04.09.2003
Publication Kind A1
IPC
F04D 9/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
9Priming; Preventing vapour lock
02Self-priming pumps
F04D 9/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
DNON-POSITIVE-DISPLACEMENT PUMPS
9Priming; Preventing vapour lock
F04D 29/44
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
F04D 29/66
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
66Combating cavitation, whirls, noise, vibration, or the like; Balancing
Applicants KANBARA YOSHIAKI
Inventors Kanbara Yoshiaki
Agents Flynn Thiel Boutell &; Tanis
Priority Data 2000205365 06.07.2000 JP
Title
(EN) Self-priming pump
Abstract
(EN)

The present invention relates to a self-priming pump capable of preventing a swirl flow from developing during the self-priming operation and assuring the smooth flow of a stream of water during the pumping operation. The self-priming pump has a main line (12) formed with a swirl flow forming space (15) allowing self-primed water accumulated in a casing (1) to be discharged together with air from a small scroll casing 11 through an auxiliary line (14) to the main line (12) during the self-priming operation to produce a swirl flow in the main line so as to allow air-water separation. The self-priming pump is provided with a plate member (16) for eliminating the swirl flow in the main line below the swirl flow forming space extendedly in the extension direction of the main line.


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