ATE366878T1 - CENTRIFUGAL PUMP - Google Patents

CENTRIFUGAL PUMP

Info

Publication number
ATE366878T1
ATE366878T1 AT05425397T AT05425397T ATE366878T1 AT E366878 T1 ATE366878 T1 AT E366878T1 AT 05425397 T AT05425397 T AT 05425397T AT 05425397 T AT05425397 T AT 05425397T AT E366878 T1 ATE366878 T1 AT E366878T1
Authority
AT
Austria
Prior art keywords
pipe
fluid
outfeed
containment body
infeed
Prior art date
Application number
AT05425397T
Other languages
German (de)
Inventor
Silvano Pedrollo
Original Assignee
Pedrollo Spa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pedrollo Spa filed Critical Pedrollo Spa
Application granted granted Critical
Publication of ATE366878T1 publication Critical patent/ATE366878T1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0011—Control, e.g. regulation, of pumps, pumping installations or systems by using valves by-pass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/004—Priming of not self-priming pumps
    • F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid

Abstract

A centrifugal pump comprises a containment body (2) with an infeed pipe (4) and an outfeed pipe (6); at least one intake stage (9) located in the containment body (2) between the pipes (4, 6), and having at least one impeller (10) for sucking a fluid from the infeed pipe (4) and conveying it towards the outfeed pipe (6); and impeller (10) drive means (7). The pump also has a safety valve (19) located in the containment body (2) and able to switch between an open condition in which it allows fluid to pass from the outfeed pipe (6) to the infeed pipe (4), and a closed condition in which it does not allow the passage of the fluid. The pump also comprises safety valve (19) locking means (26) for keeping the valve (19) in the closed position until the pressure of the fluid in the outfeed pipe (6) exceeds a predetermined pressure value P.
AT05425397T 2005-05-31 2005-05-31 CENTRIFUGAL PUMP ATE366878T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05425397A EP1729009B1 (en) 2005-05-31 2005-05-31 Centrifugal pump

Publications (1)

Publication Number Publication Date
ATE366878T1 true ATE366878T1 (en) 2007-08-15

Family

ID=34943213

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05425397T ATE366878T1 (en) 2005-05-31 2005-05-31 CENTRIFUGAL PUMP

Country Status (3)

Country Link
EP (1) EP1729009B1 (en)
AT (1) ATE366878T1 (en)
DE (1) DE602005001620D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505842B1 (en) * 2011-03-29 2019-12-25 Grundfos Management a/s Multi stage centrifugal pump system
EP3244066B1 (en) * 2016-05-12 2020-11-18 Grundfos Holding A/S Centrifugal pump
EP3929445A1 (en) * 2020-06-22 2021-12-29 Grundfos Holding A/S Centrifugal pump device
EP4191065B1 (en) * 2021-12-02 2024-01-17 Husqvarna Ab Watering pump

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1913242A1 (en) * 1969-03-15 1970-09-24 Wilfried Niemes Device for keeping the delivery height of centrifugal pumps constant with a variable delivery rate
DE2106852A1 (en) * 1971-02-13 1972-09-14 Sueddeutsche Kuehler Behr Heating circulation pump
IT1257704B (en) * 1991-12-05 1996-02-01 Nocchi Pompe Spa MULTI-FUNCTIONAL WATER PUMP: CENTRIFUGAL, FOR DEEP SUCTION, SELF-PRIMING, CENTRIFUGAL WITH PRESSURE REGULATION, SELF-PRIMING WITH PRESSURE REGULATION, WITH STARTING DEVICE AND / OR AUTOMATIC STOP
DE19709484A1 (en) * 1997-03-07 1998-09-10 Hella Kg Hueck & Co Unit for regulating coolant temperature of internal combustion engine in motor vehicle

Also Published As

Publication number Publication date
DE602005001620D1 (en) 2007-08-23
EP1729009B1 (en) 2007-07-11
EP1729009A1 (en) 2006-12-06

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties