EP0623713B1 - Verfahren und Einrichtung für automatische Zirkulation in einer Abwasserpumpanlage - Google Patents

Verfahren und Einrichtung für automatische Zirkulation in einer Abwasserpumpanlage Download PDF

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Publication number
EP0623713B1
EP0623713B1 EP94850059A EP94850059A EP0623713B1 EP 0623713 B1 EP0623713 B1 EP 0623713B1 EP 94850059 A EP94850059 A EP 94850059A EP 94850059 A EP94850059 A EP 94850059A EP 0623713 B1 EP0623713 B1 EP 0623713B1
Authority
EP
European Patent Office
Prior art keywords
valve
outlet part
pressure
pump
flow
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP94850059A
Other languages
English (en)
French (fr)
Other versions
EP0623713A1 (de
Inventor
Bengt Södergard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xylem Water Solutions AB
Original Assignee
ITT 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 ITT Flygt AB filed Critical ITT Flygt AB
Publication of EP0623713A1 publication Critical patent/EP0623713A1/de
Application granted granted Critical
Publication of EP0623713B1 publication Critical patent/EP0623713B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage
    • 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
    • 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
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the invention concerns a device for providing circulation in pump stations which are parts of a municipal sewage system.
  • the problems have been solved by arranging a valve in the pump outlet, which is opened temporarily thus obtaining a circulation and flushing in the pump station.
  • the sludge banks are dissolved and the fluid is homogenized.
  • the purpose of this invention is to obtain a device which in a simple and reliable way controls the valve, independent of the pressure situation in the surrounding area. This is obtained by help of the method and the device stated in the claims.
  • Fig 1 shows a pump station with a pump unit and attached valve.
  • Figs 2 to 4 show the principle design of the valve in different operating positions.
  • FIG. 1 stands for a pump station with a submersible pump unit 2 connected to a pressure pipe 3.
  • 4 stands for the pump housing having an inlet 5
  • 6 stands for a mixing valve mounted on the pump housing 4.
  • 7 stands for a valve housing and 8 its outlet with a bend 9.
  • 10 stands for a valve ball and 11 its seat.
  • 12 and 13 stand for diaphragms, 14 and 15 cups, 16 a conduit, 17 a control device and 18 a shoulder in the outlet.
  • the device operates in the following manner: Normally the valve 6 is closed and the pumped medium is transported from the pump housing 4 and into the pressure pipe 3. The flow direction is shown by the Arrow A.
  • valve is open, which means that a certain amount of the pumped medium flows through the valve, arrow B, and obtains a strong agitation in the pump station wrecking possible sludge banks. After a certain time, the valve is closed and the pumping takes place in the normal way.
  • valve 6 comprises a valve housing 7 with an outlet 8 ended by a bend 9.
  • a valve cup 14 is provided which holds a diaphragm 12 with a valve ball 10. This is arranged to be able to close the passage through the valve housing 7 when it rests on a seat 11.
  • Fig 2 the valve is shown in open position which means that circulation takes place within the pump station.
  • the valve ball 10 then takes a position entirely beside the flow, not hindering it.
  • the flow through the valve now creates pressure differences which may be used for controlling the valve function.
  • the cross section in the outlet 8 is smaller than the cross section in the valve housing 7, the pressure in the former will be higher.
  • the difference may also be increased by a shoulder 18 or a bend 9 in the outlet which further increases the pressure.
  • the mentioned pressure difference is utilized by arranging rooms in the valve housing 7 and the outlet 8 which are delimited by diaphragms 12 and 13 respective, said rooms being connected by a conduit 16.
  • the time it takes for the oil to move from the room delimited by the diaphragm 13 to the room delimited by the diaphragm 12 is controlled in a suitable way by help of a restriction in the conduit 16.
  • Fig 4 the valve is shown in a closed position which is the case after a predetermined time. Pump pressure will now prevail within the valve housing 7 as long as the pump operates. This means that the diaphragm 12 is pressed downwards to its original position and the oil is pressed back towards the diaphragm 13 which is not influenced by the pump pressure and thus resumes its original, bending design. When the pumping stops the pressure decreases and the valve ball 10 is moved by gravity to its original position. The valve is then open waiting for next pump start.
  • valve ball is actuated upon by a diaphragm 12 which has a corresponding number 13 in the outlet 8.
  • the rooms being delimited by the diaphragms communicating via a conduct 16.
  • the drawings just show a preferred embodiment. The design of the diaphragms as well as that of the rooms may vary within the scope of the invention, to utilize the pressure difference between two different parts in the valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Sewage (AREA)
  • Safety Valves (AREA)
  • Multiple-Way Valves (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (5)

  1. Verfahren zum Steuern eines Ventils zum Erzielen von Zirkulation in Abwasser-Pumpstationen, die eine oder mehrere Pumpeneinheiten, vorzugsweise Zentrifugalpumpen des tauchbaren Typs, enthalten, von denen eine oder mehrere mit Mischventilen versehen sind, die automatisch während einer bestimmten, begrenzten Zeitdauer (Zeitdauern) die Druckseite einer Pumpe mit der Pumpstation verbinden und dadurch eine Zirkulation des umgepumpten Mediums erzielen, und wobei die sich daran anschließende Zurückverbindung zu der Pumpstation mit Hilfe eines Ventils ausgeführt wird, das ein mit der Druckseite der Pumpe verbundenes Ventilgehäuse und eine Austrittsdüse aufweist, wobei die Steuerung des Ventils erzielt wird mit Hilfe eines beweglichen Ventilelements (10), das in Abhängigkeit von der Drucksituation in dem Ventil in seiner einen Ruheposition dicht an einem Sitz (11) in dem Ventilgehäuse (7) anliegt und letztes somit schließt und in seiner anderen Ruheposition in einer Membran (12) enthalten ist, die außerhalb der Strömung durch das Ventil angeordnet ist,
    dadurch gekennzeichnet, daß das Ventilelement (10) durch Schwerkraft zur Ausführung einer Bewegung aus seiner ersten Ruheposition in seine zweite Ruheposition veranlaßt wird und durch die durch die Strömung durch das Ventil verursachte Druckdifferenz zwischen dem Austrittsteil (8) mit höherem Druck und dem Inneren des Ventilgehäuses (7) mit niedrigerem Druck zur Ausführung einer Bewegung aus seiner zweite Ruheposition in seine erste Ruheposition veranlaßt wird, wobei der Druck in dem Austrittsteil (8) auf zwei separate Membranen (12) bzw. (13) wirkt.
  2. Vorrichtung zum Durchführen des Verfahrens nach Anspruch 1,
    dadurch gekennzeichnet, daß sie ein Ventilgehäuse (7) mit einem Austrittsteil (8) aufweist, wobei das Innere des Gehäuses (7) sowie das Innere des Austrittsteils (8) mit je einer Membran (12) bzw. (13) versehen sind, die Räume (14) bzw. (15) abgrenzen, die über einen Kanal (16) kommunizieren, und daß die Membran (12) dazu in der Lage ist, das Ventilelement (10) in Schließrichtung in Richtung auf einen Sitz (11) in dem Ventilgehäuse (7) zu bewegen und dadurch die Strömung durch dieses hindurch zu unterbrechen.
  3. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet, daß eine Steuervorrichtung (17) dazu ausgebildet ist, die Strömung durch den Kanal (16) zu steuern, wodurch wiederum die Schließzeit für das Ventil bestimmt wird.
  4. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet, daß das Austrittsteil (8) mit einer inneren Schulter (18) versehen ist, die den Druckanstieg in dem Austrittsteil (8) fördert.
  5. Vorrichtung nach Anspruch 2,
    dadurch gekennzeichnet, daß sich an das Austrittsteil (8) eine Biegung (9) anschließt, die die Strömung von dem Ventil wegführt und ebenfalls den Druckanstieg in dem Austrittsteil (9) fördert.
EP94850059A 1993-04-29 1994-04-20 Verfahren und Einrichtung für automatische Zirkulation in einer Abwasserpumpanlage Expired - Lifetime EP0623713B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9301459 1993-04-29
SE9301459A SE501192C2 (sv) 1993-04-29 1993-04-29 Sätt och anordning att styra en ventil för att åstadkomma återcirkulation i avloppsvattenpumpstationer

Publications (2)

Publication Number Publication Date
EP0623713A1 EP0623713A1 (de) 1994-11-09
EP0623713B1 true EP0623713B1 (de) 1999-07-21

Family

ID=20389766

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94850059A Expired - Lifetime EP0623713B1 (de) 1993-04-29 1994-04-20 Verfahren und Einrichtung für automatische Zirkulation in einer Abwasserpumpanlage

Country Status (8)

Country Link
EP (1) EP0623713B1 (de)
JP (1) JP2607839B2 (de)
AU (1) AU674561B2 (de)
CA (1) CA2122087C (de)
DE (1) DE69419562T2 (de)
DK (1) DK0623713T3 (de)
NO (1) NO941463L (de)
SE (1) SE501192C2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5866683A (en) 1995-03-31 1999-02-02 Laboratory Of Molecular Biophotonics Isoelectric point markers for isoelectric focusing with fluorescence detection
DE29717006U1 (de) * 1997-08-09 1998-03-26 Gutzeit, Theodor, 54655 Wilsecker Fördervorrichtung und Kugel-Rückfluß-Verhinderer für mit Sperrstoffen versetzte flüssige Medien, insbesondere Abwässer
DE19754751C1 (de) * 1997-12-10 1999-03-18 Klein Schanzlin & Becker Ag Thermostatisch bewegbares Spülventil
IT1314629B1 (it) * 2000-05-12 2002-12-20 Zenit Spa Valvola di flussaggio
KR20030010032A (ko) * 2001-07-25 2003-02-05 이윤호 수중펌프의 플러싱밸브
JP4823791B2 (ja) * 2005-07-22 2011-11-24 株式会社鶴見製作所 汚水攪拌バルブ及びこれを用いたポンプユニット
EP3309311B1 (de) * 2016-10-17 2019-12-04 Xylem Europe GmbH Spülventil und pumpstation mit solch einem spülventil
CN109931425B (zh) * 2017-12-18 2024-04-16 内蒙古蒙牛乳业（集团）股份有限公司 一种防漏排空装置
CN108167454A (zh) * 2017-12-28 2018-06-15 舒朋士泵业常州有限公司 一种混流式冲洗阀

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE461993B (sv) * 1988-09-13 1990-04-23 Flygt Ab Anordning foer att aastadkomma aatercirkulation i avloppsvattenpumpstationer
SE463218B (sv) * 1989-02-21 1990-10-22 Flygt Ab Saett och anordning foer aastadkommande av aatercirkulation i avloppsvattenpumpstationer
SE9002711D0 (sv) * 1990-08-21 1990-08-21 Flygt Ab Anordning foer att aastadkomma cirkulation i pumpstationer

Also Published As

Publication number Publication date
DK0623713T3 (da) 1999-11-29
CA2122087A1 (en) 1994-10-30
JPH0776873A (ja) 1995-03-20
JP2607839B2 (ja) 1997-05-07
NO941463D0 (no) 1994-04-21
CA2122087C (en) 1998-12-29
AU5789394A (en) 1994-11-03
SE9301459L (sv) 1994-10-30
SE9301459D0 (sv) 1993-04-29
AU674561B2 (en) 1997-01-02
SE501192C2 (sv) 1994-12-05
NO941463L (no) 1994-10-31
DE69419562T2 (de) 2000-02-03
EP0623713A1 (de) 1994-11-09
DE69419562D1 (de) 1999-08-26

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