EP0088861B1 - Soupape anti-retour spécialement pour des conduites d'eau potable - Google Patents

Soupape anti-retour spécialement pour des conduites d'eau potable Download PDF

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Publication number
EP0088861B1
EP0088861B1 EP83100098A EP83100098A EP0088861B1 EP 0088861 B1 EP0088861 B1 EP 0088861B1 EP 83100098 A EP83100098 A EP 83100098A EP 83100098 A EP83100098 A EP 83100098A EP 0088861 B1 EP0088861 B1 EP 0088861B1
Authority
EP
European Patent Office
Prior art keywords
upstream
downstream
piston tube
chamber
piston
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
EP83100098A
Other languages
German (de)
English (en)
Other versions
EP0088861A2 (fr
EP0088861A3 (en
Inventor
Peter Hoffmann
Walter Evers
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.)
Ecolab Engineering GmbH
Original Assignee
Lang Apparatebau GmbH
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 Lang Apparatebau GmbH filed Critical Lang Apparatebau GmbH
Priority to AT83100098T priority Critical patent/ATE22584T1/de
Publication of EP0088861A2 publication Critical patent/EP0088861A2/fr
Publication of EP0088861A3 publication Critical patent/EP0088861A3/de
Application granted granted Critical
Publication of EP0088861B1 publication Critical patent/EP0088861B1/fr
Expired 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
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/10—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves
    • E03C1/108—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves having an aerating valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2544—Supply and exhaust type
    • Y10T137/2557—Waste responsive to flow stoppage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/3149—Back flow prevention by vacuum breaking [e.g., anti-siphon devices]
    • Y10T137/3185—Air vent in liquid flow line
    • Y10T137/3294—Valved
    • Y10T137/3331—With co-acting valve in liquid flow path

Definitions

  • the invention relates to a pipe separator, in particular for drinking water pipes, consisting of an inlet cylinder which can be connected to a shut-off water supply line, an outlet cylinder separated therefrom by a drainage point, a displaceably arranged in one of the two cylinders, acting under the action of a return spring, and an inlet side Valve body, which closes the piston tube in the disconnected position of the piston tube when the liquid supply is shut off under the action of the return spring, but at the end of the extension movement of the piston tube then sealingly entering the other cylinder when the fluid supply is released, releases the liquid passage through the latter.
  • the invention has for its object to provide a pipe separator of the type mentioned, in which it is ensured in a structurally simpler manner that the piston tube can retract into its guide cylinder when the liquid supply is shut off, that is to say it can get into its separating position without it being deliberate Leakage water passage on the circumference of the piston tube or a special drain valve is required.
  • This object is achieved in that a relief channel is provided in the valve body which connects the working spaces located on both sides of it.
  • the relief channel advantageously consists of a longitudinal bore provided in the valve rod end carrying the valve body and a radial radial hole.
  • the relief channel in the valve body also creates the prerequisite that the piston tube can be guided even better on its guide circumference in the feed cylinder and, above all, can also be sealed.
  • the piston tube has, at its end facing the inlet connection, an annular flange that extends comparatively far in the axial direction with two sliding rings at its ends and a sealing ring located between them, which bear against the cylinder wall in a sliding or sealing manner.
  • the guide between the cylinder wall and the piston tube ring flange can now be effectively sealed, which in turn is advantageous for the return spring, which thereby directly the piston tube can be arranged around without coming into contact with the flow water.
  • the slide rings on both sides of the seal on the piston tube ring flange ensure constant cleaning of the cylinder guide surface, which means that any limescale or similar deposits are constantly cleared.
  • the pipe separator shown has two cylinders with graduated diameters, namely the inlet cylinder 1 and the outlet cylinder 2, both of which are directly connected to one another via the screw flange connection 3.
  • the inlet cylinder 1 is closed on the inlet side by a cover 5 provided with a centrally arranged inlet connector 4.
  • a union nut 6 is seated on the inlet connection 4 for suitable connection to a pipeline provided with an upstream shut-off valve.
  • a corresponding union nut 7 is also located on the outlet connector 8 of the outlet cylinder 2.
  • Both the two cylinders 1, 2 and their connectors 4, 8 are coaxial with one another, so that there is an elongated, elongated design which does not require any pipeline offset for their installation.
  • the piston tube 9 is axially displaceably mounted.
  • the piston tube 9 is provided with a relatively far axially extending ring flange 10, at the ends of which there are sliding rings 11, 12 which bear against the inner wall of the cylinder 1 in a sliding manner.
  • a helical compression spring 14 serving as a return spring is provided, which is supported at one end on the piston tube ring flange 10 and at the other end on an annular disc 15 which rests on the projecting annular shoulder 16 of the feed cylinder 1.
  • the end 1 'of the feed cylinder 1 facing the discharge cylinder 2 is tapered in diameter and contains the leakage-water separating point in the form of the leakage water nozzle 17, to which the drain pipe 19 provided with a balloon-like extension 18 is connected.
  • a transparent window 20 is arranged opposite the leakage water nozzle 17, which enables a visual observation of the separation point.
  • a stop buffer ring 22 is provided on the annular shoulder 21, which projects into the tapered end 1 'of the feed cylinder 1, which limits the extension movement of the piston tube 9 by a stop on the annular flange 10.
  • valve rod 24 is fastened via radial retaining webs 23, which carries at its free end the valve body 25 which, with a circumferential seal 26 in the illustrated retracted separation position of the piston tube 9, bears sealingly against its inner wall.
  • a relief channel 27 is provided, which consists of the axial bore 27 'and the oblique radial bore 27 ".
  • the bore has a diameter of approximately 2 mm. It provides a permanent connection between the on both sides of the Valve body 25 located working spaces 28, 29.
  • the drain cylinder 2 which is twice the diameter, is provided at its inlet end with a grooved ring holder 30 which, on the one hand, encloses the seal 31, which cooperates with the piston tube 9, with the annular flange 16 of the inlet cylinder 1 and, on the other hand, with the projecting annular shoulder 2 'on the outlet cylinder 2, the valve seat ring 32.
  • This valve seat ring 32 belongs to the backflow preventer seated in the discharge cylinder 2, generally designated 33. This consists of the valve rod 35, which is in turn fastened via radial holding webs 34, and the valve body 36, which is axially displaceable to a limited extent against its spring action.
  • conical flow transition surfaces 37 or 38 and 39 are provided in the region of the holding webs 23 and 34 carrying the valve rods 24, 35 and at the inlet end of the piston tube 9.
  • the piston tube In the position shown in the drawing, the piston tube is in its separation position, which is retracted into the cylinder 1, in which the piston tube end 9 'is located at a sufficiently large safety distance from the drain cylinder 2 or the cylinder ring flange 16 facing it. Any process water that passes through the backflow preventer 33, which is closed in this position, runs off via the leakage water connection 17, and is therefore not able to get into the piston tube 9 and thus into the drinking water supply line. If the drinking water supply is released by opening a shut-off valve located in front of the pipe separator, the pressure in the working chamber 28 located in front of the valve body 25 is increased accordingly, although a small part of the inlet water already passes through the relief channel 27 and enters the leakage water nozzle 17 without damage expires.
  • the build-up of pressurized water is in any case strong enough to shift the piston tube 9 to the right into its flow position.
  • the piston tube 9 lifts off from the valve body 25, so that only then does the water flow through.
  • the backflow preventer 33 also opens.
  • the inflow water can thus flow well through the pipe separator with a comparatively low flow resistance. If the water flow is stopped at the shut-off valve on the inlet side, the water pressure drops.
  • the piston tube 9 is then moved into the disconnected position under the action of the return spring 14 surrounding it.

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)
  • Safety Valves (AREA)
  • Pipe Accessories (AREA)

Claims (3)

1. Séparateur de tuyaux, destiné notamment aux conduites d'eau potable, comportant un cylindre d'admission (1) pouvant être raccordé à une conduite d'alimentation en eau apte à être obturée, un cylindre d'évacuation (2) séparé du cylindre d'admission par une zone de séparation détournant l'eau de fuite, un tube-piston (9) monté déplaçable dans l'un des deux cylindres (1, 2) et soumis à l'action d'un ressort de rappel (14) et un clapet (25) disposé côté arrivée d'eau, qui obture le tube-piston (9) lorsque, l'arrivée d'eau étant coupée, celui-ci est placé en position rentrée de séparation sous l'action du ressort de rappel (14), mais qui libère le passage du liquide dans le tube-piston (9), vers la fin du mouvement de sortie du tube-piston (9), produit par une arrivée de liquide autorisée, à l'encontre de la force du ressort de rappel (14), le tube-piston (9) pénétrant alors dans l'autre cylindre en réalisant une étanchéité, caractérisé en ce qu'il est prévu dans le clapet (25) un canal de décharge (27) reliant entre elles les chambres de travail (28, 29) situées des deux côtés du clapet.
2. Séparateur de tuyaux selon la revendication 1, dans lequel le tube-piston (9) est guidé en translation dans le cylindre d'admission (1) et le clapet (25) est maintenu fixe par une tige de soupape (24), est pourvu d'une garniture d'étanchéité périphérique (26) et pénètre, en formant étanchéité, dans le tube-piston (9) lorsque celui-ci est en position de séparation, caractérisé en ce que le canal de décharge (27) est constitué d'un perçage longitudinal (27') ménagé dans l'extrémité de la tige de soupape portant le clapet (25) et d'un perçage radial (27") s'étendant en biais par rapport au perçage longitudinal.
3. Séparateur de tuyaux selon la revendication 2, caractérisé en ce que le tube-piston (9) entouré par le ressort de rappel (14) présente, à son extrémité tournée vers le raccord d'admission (4), un collet annulaire (10) s'étendant sur une distance relativement grande dans la direction axiale avec deux bagues de glissement (11, 12) à ses ëxtrémités et une bague d'étanchéité (13) disposée entre celles-ci, bagues qui s'appliquent à coulissement ou en formant étanchéité contre la paroi du cylindre.
EP83100098A 1982-03-15 1983-01-07 Soupape anti-retour spécialement pour des conduites d'eau potable Expired EP0088861B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100098T ATE22584T1 (de) 1982-03-15 1983-01-07 Rohrtrenner, insbesondere fuer trinkwasserleitungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19828207222U DE8207222U1 (de) 1982-03-15 1982-03-15 Rohrtrenner, insbesondere fuer trinkwasserleitungen
DE8207222U 1982-03-15

Publications (3)

Publication Number Publication Date
EP0088861A2 EP0088861A2 (fr) 1983-09-21
EP0088861A3 EP0088861A3 (en) 1985-05-15
EP0088861B1 true EP0088861B1 (fr) 1986-10-01

Family

ID=6738028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100098A Expired EP0088861B1 (fr) 1982-03-15 1983-01-07 Soupape anti-retour spécialement pour des conduites d'eau potable

Country Status (5)

Country Link
US (1) US4518006A (fr)
EP (1) EP0088861B1 (fr)
AT (1) ATE22584T1 (fr)
CH (1) CH656663A5 (fr)
DE (2) DE8207222U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006222658B2 (en) * 2005-10-11 2011-03-17 Hans Sasserath & Co. Kg Pipe Disconnector with Increased Sealing Power

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3444300A1 (de) * 1984-12-05 1986-06-05 Lang Apparatebau GmbH, 8227 Siegsdorf Rohrtrenner, insbesondere fuer trinkwasserleitungen
US4672991A (en) * 1986-04-01 1987-06-16 Badders Edwin T Back flow prevention valve
US5163465A (en) * 1991-09-20 1992-11-17 King Lloyd H Sr Vacuum breaker venting valve
US5425393A (en) * 1993-12-15 1995-06-20 Zurn Industries, Inc. Backflow prevention and detection system
JP3514684B2 (ja) * 1999-12-22 2004-03-31 兼工業株式会社 水撃防止装置
US6675110B2 (en) 2002-01-15 2004-01-06 Watts Regulatoryco. Testing valve assemblies
PL359448A1 (en) * 2002-04-03 2003-10-06 Hans Sasserath & Co Kg Set of isolating valves for water supply system
US6910495B2 (en) * 2003-02-06 2005-06-28 Anthony P. Lafalce Backflow prevention system
US20050224114A1 (en) * 2004-04-07 2005-10-13 Christopher Michael Cook Breakaway pipe coupling with automatic shutoff
JP4559824B2 (ja) * 2004-11-08 2010-10-13 株式会社豊田自動織機 油圧回路
CN116123155A (zh) 2018-11-09 2023-05-16 芙罗服务管理公司 用于在流体交换设备中使用的活塞以及方法
WO2020097527A1 (fr) 2018-11-09 2020-05-14 Flowserve Management Company Dispositifs d'échange de fluide et commandes, systèmes et procédés associés
CN112997009A (zh) 2018-11-09 2021-06-18 芙罗服务管理公司 流体交换设备以及相关控制装置、系统和方法
CA3119046A1 (fr) 2018-11-09 2020-05-14 Flowserve Management Company Vannes comprenant une ou plusieurs caracteristiques de rincage et ensembles, systemes et procedes associes
US10988999B2 (en) 2018-11-09 2021-04-27 Flowserve Management Company Fluid exchange devices and related controls, systems, and methods
CN117328835A (zh) 2018-11-09 2024-01-02 芙罗服务管理公司 用于在至少两个流体流之间交换压力的设备及其操作方法
WO2021118771A1 (fr) 2019-12-12 2021-06-17 Flowserve Management Company Dispositifs d'échange de fluide et commandes, systèmes et procédés associés
US11746509B2 (en) * 2021-09-01 2023-09-05 Kenny Bassett Backflow prevention device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2953153A (en) * 1958-02-28 1960-09-20 Leslie C Gaul Vented safety check valve
US3067770A (en) * 1959-10-29 1962-12-11 Siegler Inc Two-way pressure responsive flow valve
US3083723A (en) * 1959-11-04 1963-04-02 Paul J Duchin Vacuum breaker
US3114382A (en) * 1962-04-30 1963-12-17 Elva J Karshner Backflow preventing valve
US3905382A (en) * 1973-09-28 1975-09-16 William Waterston Back flow preventor
AU465123B2 (en) * 1973-10-02 1975-09-03 Improvements in or relating to devices for preventing back flow in fluid supply systems
DE2418035C3 (de) * 1974-04-13 1978-09-21 Alfred Waletzko Apparatebau, 5820 Gevelsberg Rohrunterbrecher
US4013088A (en) * 1975-05-19 1977-03-22 Braukmann Armaturen Ag Valve structure
US4044787A (en) * 1976-03-19 1977-08-30 Rockwell International Corporation Backflow preventer and relief valve assembly
US4159025A (en) * 1977-05-06 1979-06-26 Telford L. Smith Back flow preventer valve
DE2747941C2 (de) * 1977-10-26 1985-02-14 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum Schutz von Trinkwasserleitungen gegen rückfließendes Brauchwasser
US4232704A (en) * 1978-03-28 1980-11-11 Amtrol Inc. In line back flow preventer
FR2469630B1 (fr) * 1979-11-12 1986-02-14 Frisquet Anc Ets M Disconnecteur pour canalisation d'eau potable
DE3207964A1 (de) * 1981-04-16 1982-11-11 Gerson GmbH, 4400 Münster Rueckflusssicherung fuer stroemende medien in leitungen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006222658B2 (en) * 2005-10-11 2011-03-17 Hans Sasserath & Co. Kg Pipe Disconnector with Increased Sealing Power

Also Published As

Publication number Publication date
CH656663A5 (de) 1986-07-15
US4518006A (en) 1985-05-21
EP0088861A2 (fr) 1983-09-21
DE8207222U1 (de) 1982-08-05
EP0088861A3 (en) 1985-05-15
ATE22584T1 (de) 1986-10-15
DE3366493D1 (en) 1986-11-06

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