EP1529888B1 - Dispositif pour éviter le reflux d'eau - Google Patents

Dispositif pour éviter le reflux d'eau Download PDF

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Publication number
EP1529888B1
EP1529888B1 EP20040105563 EP04105563A EP1529888B1 EP 1529888 B1 EP1529888 B1 EP 1529888B1 EP 20040105563 EP20040105563 EP 20040105563 EP 04105563 A EP04105563 A EP 04105563A EP 1529888 B1 EP1529888 B1 EP 1529888B1
Authority
EP
European Patent Office
Prior art keywords
edge
deformable
pressure
closed position
flow member
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
EP20040105563
Other languages
German (de)
English (en)
Other versions
EP1529888A1 (fr
Inventor
Jacobus Eldert Maria Van Baar
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.)
Intelligent Environmental Systems BV
Original Assignee
Intelligent Environmental Systems BV
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 Intelligent Environmental Systems BV filed Critical Intelligent Environmental Systems BV
Publication of EP1529888A1 publication Critical patent/EP1529888A1/fr
Application granted granted Critical
Publication of EP1529888B1 publication Critical patent/EP1529888B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/104—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using a single check valve
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
    • E03C1/28—Odour seals
    • E03C1/298—Odour seals consisting only of non-return valve
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E03F7/04—Valves for preventing return flow

Definitions

  • the invention relates to a device for preventing backflow of liquids, in particular for use in a conveying line for (waste) water and the like, for example in sewage systems according to the preamble of claim 1.
  • Such devices are known in various embodiments thereof, they may also be referred to as non-return valves.
  • a device according to the preamble is disclosed in US 2,328,382 .
  • This document describes flexible check valves and vacuum breakers which are formed from flexible material such as rubber. Coacting lips at an edge of the second end an abutting flexible sleeve member are formed from one piece of material.
  • the object of the invention is to provide a novel device for preventing backflow of liquids.
  • the device according to the invention has the features of the characterizing portion of claim 1.
  • the edge on said second end is made up of at least two portions, which are interconnected in a pivot-like manner at their places of contact.
  • the advantage of the portion of relatively soft material is that it is possible to obtain an adequate seal in this portion, also if the edge does not shut off completely. This is the case in particular if a liquid pressure prevails in the downstream portion of the conveying line. Said pressure will act on the outer side of the portion made of the relatively soft material, as a result of which said portion is squeezed tightly shut, as it were, and an especially adequate self-sealing action is obtained.
  • pressure-resistant elements are provided in the portion made of the relatively soft material, which elements offer resistance in particular against pressure in a direction at least substantially parallel to the central axis of the second end.
  • Figs. 1 - 4 show a device for preventing backflow of liquids, in particular for use in a conveying line for (waste) water and the like, for example in a pressurised sewer system.
  • the invention can also be used in other liquid conveying lines, of course, in which the liquid being conveyed may or may not contain solid impurities.
  • the device comprises a liquid-tight housing 1 (illustrated in dashed lines), in which a flow member 2 is accommodated.
  • the housing comprises a first connection 3 and a second connection 4 at opposite ends for being connected to pipes or other types of channels of a liquid conveying system or the like.
  • the flow member 2 has a first end 5 and a second end 6.
  • the first end 5 is formed on the upstream end of a pipe-shaped portion 7 of the flow member 2. Said first end 5 is open at all times, and the pipe-shaped portion 7 is made of a substantially non-deformable material.
  • the second end 6 is configured to be deformable between a substantially flat, tightly shut closed position, and a widened, open position.
  • the second end 6 is configured similarly to the opening of a "squeeze purse".
  • the second end 6 is provided with an edge 8 of a relatively hard material, which is biased to the closed position.
  • Said material may be a harder rubber, for example, or an elastically deformable metal, such as steel or the like, which may be coated with a rubber.
  • the material is biased to the closed position, or, in other words, the material is relaxed in said closed position, and a force must be exerted when deforming the edge 8 from the closed position.
  • a memory effect is obtained, such that said second end 6 will not open until an internal pressure is exerted from the first connection 3.
  • the first end 5 will move towards the closed position.
  • the edge 8 consists of two edge portions 9 and 10, which are interconnected by pivot means 11 at both ends.
  • the edge portions 9 and 10 extend in a substantially straight line between the pivot means 11 in the closed position (see Figs. 3 and 11 ), whilst the edge portions 9 and 8 have each been deformed into a semi-circular shape, a semi-oval shape (see Fig. 7 ) or other curved shape in the open position.
  • the flow member 2 comprises a portion 12 of a relatively soft, deformable material, such as a soft rubber.
  • Said portion 12 joins the pipe-shaped portion 7 and is provided with pressure-resistant elements 13, two in this case, which are aligned with the pivot means 11 in this embodiment.
  • the pressure-resistant elements 13 ensure that said portion will resist deformation in a direction parallel to the central axis of the second end 6, i.e. parallel to the direction of flow of the flow member 2 in this embodiment.
  • the portion 12 is therefore capable of deformation in a direction at least substantially perpendicularly to the direction of flow, but not in a direction parallel thereto.
  • the soft material of said portion 12 can therefore be selected by its ability to provide an adequate seal in the closed position of the flow member 2.
  • Said pressure-resistant elements may also be provided at other positions, of course, or other types of elements may be used, as long as the sealing action is not adversely affected thereby.
  • the portion 12 is relatively long so as to ensure that the flow member 12 is shut off in an adequate manner.
  • Figs. 5 - 8 show the situation in which the pressure at the first connection 3 is higher than at the second connection 4 of the housing 1, as a result of which liquid tends to flow from the first connection to the second.
  • the fluid pressure causes the edge portions 9 and 10 of the edge to be deformed to a curved position, as a result of which a passage is formed at the second end 6 of the flow member 2 (see the arrows).
  • Figs. 9 - 12 show the situation in which the pressure at the second connection 4 is higher than at the first connection 3. Said pressure causes the edge portions 9 and 10 to return to the biased position again, whilst the soft material of the portion 12 is pressed together inwardly to a closed position (see the arrows) by the external, higher fluid pressure, as a result of which a very good seal is obtained, also in the situation in which an incomplete seal is obtained at the edge 8, for example as a result of a hard particle still being present in the liquid at that location.
  • the invention provides a device for preventing backflow of liquid that is remarkable for its reliable operation and for providing an adequate seal in the closed position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Check Valves (AREA)

Claims (8)

  1. Dispositif pour empêcher le refoulement de liquides, en particulier destiné à être utilisé dans une conduite de transport pour des eaux (usées) et analogues, comprenant un élément d'écoulement (2) possédant une première extrémité (5) et une seconde extrémité (6), laquelle première extrémité est de préférence ouverte et laquelle seconde extrémité peut être ouverte et fermée, et, dans ce but, la seconde extrémité (6) est faite d'un matériau déformable, de sorte que ladite seconde extrémité soit déformable entre une position fermée sensiblement plate, et une position ouverte comprimée, ladite seconde extrémité (6) étant sollicitée dans la position fermée, caractérisé en ce que la seconde extrémité (6) est formée avec un bord (8) qui comprend un matériau relativement dur, qui est sollicité dans la position fermée, et une partie (12) en butée contre le bord (8) et faite d'un matériau déformable relativement mou de sorte que la partie (12) puisse être comprimée.
  2. Dispositif selon la revendication 1, dans lequel le bord (8) sur ladite seconde extrémité (6) comprend au moins deux parties (9, 10), qui sont reliées mutuellement à la manière d'un pivot à leurs emplacements de contact (11).
  3. Dispositif selon la revendication 1 ou 2, dans lequel des éléments résistants à la pression (13) sont prévus dans la partie (12) faite du matériau relativement mou, lesquels éléments offrent une résistance en particulier contre une pression dans une direction au moins sensiblement parallèle à l'axe central de la seconde extrémité (6).
  4. Dispositif selon la revendication 3, dans lequel lesdits éléments résistants à la pression (13) sont prévus au moins de façon alignée avec lesdits emplacements de contact de type pivot (11).
  5. Dispositif selon l'une quelconque des revendications 1 à 4, dans lequel une partie en forme de tuyau sensiblement non déformable (7) pourvue de ladite première extrémité (5) est en butée contre la partie (12) faite du matériau relativement mou.
  6. Dispositif selon l'une quelconque des revendications précédentes, dans lequel l'élément d'écoulement (2) est agencé dans un logement étanche aux liquides (1) qui entoure l'élément d'écoulement et qui comprend des raccords à ses deux extrémités (3, 4) pour être raccordé à des conduites de transport de liquide supplémentaires.
  7. Dispositif selon l'une quelconque des revendications 1 à 6, dans lequel le bord sur la seconde extrémité (6) est formé d'un matériau caoutchouteux dur ou d'un métal élastiquement déformable qui est de préférence revêtu d'un matériau caoutchouteux.
  8. Tuyau pour transporter un liquide, en particulier des eaux usées, pourvu d'un dispositif selon l'une quelconque des revendications précédentes.
EP20040105563 2003-11-06 2004-11-05 Dispositif pour éviter le reflux d'eau Expired - Lifetime EP1529888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1024720 2003-11-06
NL1024720 2003-11-06

Publications (2)

Publication Number Publication Date
EP1529888A1 EP1529888A1 (fr) 2005-05-11
EP1529888B1 true EP1529888B1 (fr) 2012-06-13

Family

ID=34432168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040105563 Expired - Lifetime EP1529888B1 (fr) 2003-11-06 2004-11-05 Dispositif pour éviter le reflux d'eau

Country Status (1)

Country Link
EP (1) EP1529888B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2787801C1 (ru) * 2022-04-06 2023-01-12 Владимир Анатольевич Красноярский Клапан обратный канализационный

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602006006968D1 (de) 2006-03-01 2009-07-09 Intelligent Environmental Syst Geschlitztes Einwegventil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2328382A (en) 1941-10-08 1943-08-31 Jesse D Langdon Flexible check valve and vacuum breaker
US3334646A (en) * 1965-03-15 1967-08-08 Sloan Valve Co Vacuum breakers
FR2575538B3 (fr) * 1984-12-31 1987-07-24 Fact Anal Scp Dispositif anti-pollution inserable dans une canalisation de distribution d'eau
US4870992A (en) * 1986-12-05 1989-10-03 Augerscope, Inc. Backflow prevention device
GB2320310B (en) * 1996-12-04 2000-12-27 Hepworth Building Prod Non-return device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2787801C1 (ru) * 2022-04-06 2023-01-12 Владимир Анатольевич Красноярский Клапан обратный канализационный

Also Published As

Publication number Publication date
EP1529888A1 (fr) 2005-05-11

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