EP0167511B1 - Dispositif pour un clapet de contrôle - Google Patents

Dispositif pour un clapet de contrôle Download PDF

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Publication number
EP0167511B1
EP0167511B1 EP85850226A EP85850226A EP0167511B1 EP 0167511 B1 EP0167511 B1 EP 0167511B1 EP 85850226 A EP85850226 A EP 85850226A EP 85850226 A EP85850226 A EP 85850226A EP 0167511 B1 EP0167511 B1 EP 0167511B1
Authority
EP
European Patent Office
Prior art keywords
valve body
valve
inlet
sleeve
opening
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
Application number
EP85850226A
Other languages
German (de)
English (en)
Other versions
EP0167511A2 (fr
EP0167511A3 (en
Inventor
Gyula Racs
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0167511A2 publication Critical patent/EP0167511A2/fr
Publication of EP0167511A3 publication Critical patent/EP0167511A3/en
Application granted granted Critical
Publication of EP0167511B1 publication Critical patent/EP0167511B1/fr
Expired legal-status Critical Current

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Classifications

    • 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 present invention concerns a device for a check valve to be used for instance in floor sinks, in concrete manholes, in sewerage plants etc., of the type disclosed in the preamble of the subsequent independent claim 1.
  • Check valves of the type mentioned above are known from the prior art and have been used, the movable valve body being constituted by a float which when the fluid level rises, usually due to flow-back in the drain, is pressed with its upper section in sealing contact against a downward directed valve seat near the upper inlet in the valve box.
  • the fluid which runs through the check valve is usually polluted, whereby particles of pollution may be deposited on the top side of the float and the surfaces of the valve seat, respectively. This may principally happen when there is polluted fluid in the manhole or sink in which the valve has been installed, whereby the particles in the fluid may sink and settle on the jointly acting sealing surfaces.
  • Said particles may also harden and form hard coatings on said surfaces, for instance when the fluid level goes down to a level below the valve seat. This happens because of irregular fluid supply to the manhole, sink etc. This may cause leaking in the check valve in the case of possible flow-back of fluid, whereby for instance concrete manholes in sewerage plants or floor sinks in buildings may be flooded, and the polluted fluid may flood basement floors, for instance, or other areas where such sink or manholes have been placed.
  • an elastic sleeve for instance made of rubber, attached peripherally outside the valve seat and designed with a radial annular shoulder directed inward into the opening of the valve seat, continuing in a downward directed conical bush.
  • An elastomeric 0-ring made for instance of rubber, has been provided in the acute angle transitional section between the shoulder and the bush, said bush and 0-ring being meant to act in conjunction with the upper section of the float, whereas the shoulder section is meant to act in conjunction with the inner surface of the valve seat when the float rises in the case of flow-back of fluid in the valve.
  • This check valve has a relatively great overall height because the valve seat must jut down from the inlet opening of the valve box, and also because the float body has to be designed to have a certain volume to ensure buoyancy and sealing pressure against the sleeve and the valve seat, which also demands a certain height. Moreover, the float should be protected against lateral displacement by means of guides, so that it rests correctly on the sleeve when the fluid level is rising.
  • the objective of the present invention is to avoid the above drawbacks, namely to provide a check valve with a lower overall height in the vertical direction, while also avoiding the float body itself and special guides for the latter, which could also mean simpler production and a lower production price.
  • the check valve as shown in Fig. 1 and 2 consists of a movable valve body 1 in a valve box 2 with an upper inlet 3 and a lower outlet 4, and a valve seat 5 near the upper inlet 3 meant to act in conjunction with the upper section 1a of the movable valve body 1 in the case of a rise in the fluid level, that is, flow-back in the valve.
  • the movable valve body 1 has a downward directed flow-opening 1 b, the upper section 1 a of which is connected to the upper inlet 3 by means of a flexible sleeve 6, attached to an outward jutting flange 9 near the middle section of the valve body 1 by means of. a clamping ring 10 with screws.
  • the valve body 1 is, as shown in the drawing, designed as an open bush, the lower part 1c of which is at a distance from the upper section 1a.
  • the valve seat 5 consists of a disc or an upside- down plate 5a placed centrally in the opening of the upper inlet 3 and held by means of the strut 7 to the edges of the opening.
  • the sleeve 6, which is preferably pre-shaped and manufactured in an elastomeric material such as rubber, extends up along the upper section 1 a of the valve body 1 and onwards to the periphery 3a of the opening of the inlet 3, and is pressed against and to some extent in past the upper edge 1 a' of the flow opening 1 b by means of an elastic 0-ring placed outside the sleeve 6.
  • the valve seat 5, that is 5a in the embodiment shown in Fig. 1, has been provided with a downward diverging annular wall 5c with a somewhat greater opening diameter than the outer diameter of the O-ring 6a, whereby the valve body, on being moved upwards, will press the O-ring 6a and the sleeve 6 to rest against the annular wall 5c of the valve seat 5a.
  • the inlet 3 of the valve box 2 will be closed by the sleeve 6 which is attached to the periphery 3a of the opening of the inlet 3, to rest sealingly against the annular wall 5c of the valve seat 5a, as shown in Fig. 5.
  • valve body 1 The actual raising of the valve body 1 is achieved by air being trapped between the outer wall of the valve body 1 and the sleeve 6, as the water rises up past the lower edge or part 1c of the valve body 1. In the case of a continual rise in the fluid level, the air will be pressed against the sleeve 6 and raise the latter, and thereby also the valve body 1, up towards the valve seat 5a, whereby the inlet 3 is closed.
  • annular buoyancy body 11 may of course be placed near the lower section 1c of the valve body 1.
  • the outlet 4 of the valve box 2 may of course be provided with a sill 12 extending somewhat higher than the lower edge of the valve body 1 in the lower position of the latter.
  • valve box 2 has been provided with a horizontal inlet 3 and an horizontal outlet 4 at a lower level than the inlet.
  • the valve seat 5 here consists of a section 5b of the side wall 3b of the upper inlet 3 above the periphery 3a of the opening of the inlet, to which the upper edge of the sleeve 6 is attached.
  • the sleeve 6 is attached to the valve body 1 in the same way as described in connection with the embodiment in Fig. 1.
  • the valve body 1 is hinged by means of a lever 8 to the valve box 2 near the periphery 3a of the opening so as to pivot the valve body 1 from a lower flow position upwards to an upper closed position.
  • the check valve shown in Fig. 1 and 2 may profitably be used in the outlet from tanks full of fluid and immersed in water, where the difference in pressure between the contained liquid and the surrounding water will steer the check valve from an open position to a closed position and vice versa.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Check Valves (AREA)
  • Details Of Valves (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Multiple-Way Valves (AREA)

Claims (5)

1. Un dispositif pour une vanne de contrôle utilisable par exemple dans des bouches de sol, des regards en béton, des installations d'épuration, etc., comprenant un corps de vanne mobile (1) dans un boîtier de vanne (2) présentant une entrée supérieure (3) et une sortie inférieure (4), et un siège de vanne (5) près de l'entrée supérieure (3) conçu pour agir en liaison avec la portion supérieure (1 a) du corps de vanne mobile (1) dans le cas d'une montée du niveau de l'eau, c'est-à-dire un retour d'écoulement dans la vanne, caractérisé en ce que le corps de vanne mobile (1) présente une ouverture d'écoulement (1 b) dirigée vers le bas, dont la partie supérieure (1a) est reliée à l'entrée supérieure (3) au moyen d'un manchon souple (6) dont la partie inférieure (1c) est écartée de la portion supérieure (1a), et en ce que le siège de vanne (5) est placé de manière indépendante du pourtour (3a) de l'ouverture de la portion supérieure (3) du boîtier de vanne (2), ledit corps de vanne étant soulevé, par l'air emprisonné dans le boîtier de vanne (2) dans le cas d'un retour d'écoulement, afin de prendre appui de manière étanche contre le siège de vanne (5), ledit corps de vanne étant appuyé contre le dessous du manchone 6 et le soulevant du fait de la montée du niveau de l'eau, le manchon (6) bloquant en même temps l'entrée (3).
2. Un dispositif selon la revendication 1, caractérisé en ce que le siège de vanne (5) comprend un disque (5a) placé centralement dans l'ouverture de l'entrée supérieure (3), ledit disque étant maintenu par des étrésillons (7).
3. Un dispositif selon la revendication 1, caractérisé en ce que le siège de vanne (5) comprend une portion (5b) de la paroi latérale (3b) de l'entrée supérieure (3) au-dessus du pourtour (3a) de l'ouverture de ladite entrée dans le cas d'une entrée (3) dirigée latéralement, et en ce que le corps de vanne (1) est articulé au boîtier de vanne (2) au moyen d'un levier (8) près du pourtour (3a) de l'ouverture afin de faire pivoter le corps de vanne (1) depuis une position inférieure d'écoulement jusqu'à une position supérieure fermée.
4. Un dispositif selon les revendications 1, 2 ou 3, caractérisé en ce que le manchon (6) est fixé au corps de vanne (1) en-dessous du bord supérieur (1a') de l'ouverture d'écoulement (1b) en s'étendant le long de la portion supérieure (1a) du corps de vanne (1) et en se prolongeant vers le pourtour (3a) de l'ouverture de l'entrée (3), un anneau torique étant placé sur la face externe du manchon (6) afin de pousser ce dernier contre ledit bord (1a') et afin d'agir en liaison avec une surface interne sur une paroi annulaire (5c) divergeant vers le bas et montée sur le siège de vanne (5) quand le corps de vanne (1) est soulevé.
5. Un dispositif selon la revendication 1, caractérisé en ce que le manchon (6) est préformé et fabriqué en une matière élastique telle qu'en caoutchouc, qui est connue en elle-même.
EP85850226A 1984-07-02 1985-07-01 Dispositif pour un clapet de contrôle Expired EP0167511B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO842676 1984-07-02
NO842676A NO155299C (no) 1984-07-02 1984-07-02 Anordning ved tilbakeslagsventil.

Publications (3)

Publication Number Publication Date
EP0167511A2 EP0167511A2 (fr) 1986-01-08
EP0167511A3 EP0167511A3 (en) 1986-08-20
EP0167511B1 true EP0167511B1 (fr) 1988-06-01

Family

ID=19887745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85850226A Expired EP0167511B1 (fr) 1984-07-02 1985-07-01 Dispositif pour un clapet de contrôle

Country Status (4)

Country Link
EP (1) EP0167511B1 (fr)
DE (1) DE3563081D1 (fr)
HU (2) HUT40177A (fr)
NO (1) NO155299C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE457971B (sv) * 1987-04-27 1989-02-13 Kjell Warnquist Bakvattenstopp foer sjaelvfallsledningar,som innefattar ett flytroer
GB2244433B (en) * 1990-05-10 1995-01-04 Camberley Rubber Mouldings Lim Valve assembly for breathing apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638178A (en) * 1950-07-17 1953-05-12 Harry C Riechman Backflow check float for sewers
US3270771A (en) * 1963-06-11 1966-09-06 Robertshaw Controls Co Resilient disc check valve
US3749353A (en) * 1971-06-24 1973-07-31 R Pauliukonis Membrane shutoff valve
CH606881A5 (fr) * 1977-01-07 1978-11-15 Albert Schuele
US4182355A (en) * 1977-09-01 1980-01-08 Briel Adriaan Z A Reflux valve

Also Published As

Publication number Publication date
EP0167511A2 (fr) 1986-01-08
EP0167511A3 (en) 1986-08-20
NO155299B (no) 1986-12-01
HU194590B (en) 1988-02-29
NO155299C (no) 1987-03-11
NO842676L (no) 1986-01-03
DE3563081D1 (en) 1988-07-07
HUT40177A (en) 1986-11-28

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