SE8300797L - CHECK VALVE - Google Patents

CHECK VALVE

Info

Publication number
SE8300797L
SE8300797L SE8300797A SE8300797A SE8300797L SE 8300797 L SE8300797 L SE 8300797L SE 8300797 A SE8300797 A SE 8300797A SE 8300797 A SE8300797 A SE 8300797A SE 8300797 L SE8300797 L SE 8300797L
Authority
SE
Sweden
Prior art keywords
check valve
receiver
pump
liquid
independant
Prior art date
Application number
SE8300797A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE449897B (en
SE8300797D0 (en
Inventor
R Svensson
Original Assignee
Flygt Ab
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 Flygt Ab filed Critical Flygt Ab
Priority to SE8300797A priority Critical patent/SE449897B/en
Publication of SE8300797D0 publication Critical patent/SE8300797D0/en
Priority to DE8484850036T priority patent/DE3460283D1/en
Priority to EP19840850036 priority patent/EP0118403B1/en
Priority to JP59024561A priority patent/JPS59205075A/en
Publication of SE8300797L publication Critical patent/SE8300797L/en
Publication of SE449897B publication Critical patent/SE449897B/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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/406—Casings; Connections of working fluid especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/066—Floating-units
    • 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
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Jet Pumps And Other Pumps (AREA)

Abstract

The invention concerns a device which prevents backflow of liquid into a pump unit. The outlet pipe (4) from a pump (1) is provided with a telescopic extension (5) supported by a float (6) on the surface of the receiver. The static head may then be minimized, independant of the liquid level in the receiver.
SE8300797A 1983-02-15 1983-02-15 DEVICE PREVENTION THROUGH THE OUTPUT PIPE OF A PUMP WHICH COINS IN A RECIPIENT CONTAINING PUMP MEDIUM SE449897B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE8300797A SE449897B (en) 1983-02-15 1983-02-15 DEVICE PREVENTION THROUGH THE OUTPUT PIPE OF A PUMP WHICH COINS IN A RECIPIENT CONTAINING PUMP MEDIUM
DE8484850036T DE3460283D1 (en) 1983-02-15 1984-02-02 Back flow preventing device in the outlet pipe of a pump
EP19840850036 EP0118403B1 (en) 1983-02-15 1984-02-02 Back flow preventing device in the outlet pipe of a pump
JP59024561A JPS59205075A (en) 1983-02-15 1984-02-14 Backflow preventer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8300797A SE449897B (en) 1983-02-15 1983-02-15 DEVICE PREVENTION THROUGH THE OUTPUT PIPE OF A PUMP WHICH COINS IN A RECIPIENT CONTAINING PUMP MEDIUM

Publications (3)

Publication Number Publication Date
SE8300797D0 SE8300797D0 (en) 1983-02-15
SE8300797L true SE8300797L (en) 1984-08-16
SE449897B SE449897B (en) 1987-05-25

Family

ID=20350038

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8300797A SE449897B (en) 1983-02-15 1983-02-15 DEVICE PREVENTION THROUGH THE OUTPUT PIPE OF A PUMP WHICH COINS IN A RECIPIENT CONTAINING PUMP MEDIUM

Country Status (4)

Country Link
EP (1) EP0118403B1 (en)
JP (1) JPS59205075A (en)
DE (1) DE3460283D1 (en)
SE (1) SE449897B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4320422A1 (en) * 1993-04-08 1994-10-13 Klein Schanzlin & Becker Ag Return flow check device for pump discharge pipes - has pipe outlet above max. fluid level, and bell-shaped hood over it, with edge at min. fluid level
EP0623751B1 (en) * 1993-04-08 1996-10-30 KSB Aktiengesellschaft Pump with back flow hindering device
DE10034174A1 (en) * 2000-07-14 2002-01-24 Ksb Ag pump station
DE102008010360B4 (en) * 2008-02-15 2020-02-27 Flux-Geräte GmbH pump means
EP2733358A1 (en) * 2012-11-15 2014-05-21 ABB Oy Method for approximating the static head downstream of a pump
CN111675328A (en) * 2020-06-01 2020-09-18 上海市城市建设设计研究总院（集团）有限公司 Energy-saving internal reflux system and using method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1528665A1 (en) * 1966-07-29 1971-01-21 Ewald Burger Dirty water pump
US4030859A (en) * 1975-09-02 1977-06-21 Lake Aid Inc. Floating aerator having means to vary the length of the draft pipe

Also Published As

Publication number Publication date
SE449897B (en) 1987-05-25
EP0118403B1 (en) 1986-07-16
SE8300797D0 (en) 1983-02-15
DE3460283D1 (en) 1986-08-21
JPS59205075A (en) 1984-11-20
EP0118403A1 (en) 1984-09-12
JPH0143188B2 (en) 1989-09-19

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