EP0370431A1 - Soupape anti-retour - Google Patents

Soupape anti-retour Download PDF

Info

Publication number
EP0370431A1
EP0370431A1 EP89121443A EP89121443A EP0370431A1 EP 0370431 A1 EP0370431 A1 EP 0370431A1 EP 89121443 A EP89121443 A EP 89121443A EP 89121443 A EP89121443 A EP 89121443A EP 0370431 A1 EP0370431 A1 EP 0370431A1
Authority
EP
European Patent Office
Prior art keywords
lip
backflow preventer
incisions
valve
preventer according
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.)
Withdrawn
Application number
EP89121443A
Other languages
German (de)
English (en)
Inventor
Eberhard Gocke
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.)
Honeywell Braukmann GmbH
Original Assignee
Honeywell Braukmann 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 Honeywell Braukmann GmbH filed Critical Honeywell Braukmann GmbH
Publication of EP0370431A1 publication Critical patent/EP0370431A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • E03C1/106—Devices for preventing contamination of drinking-water pipes, e.g. means for aerating self-closing flushing valves using two or more check valves
    • 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

Definitions

  • the present invention relates to a backflow preventer valve for a differential pressure-controlled pipe separator according to the preamble of claim 1.
  • Such a check valve is e.g. shown and described in DE-PS 3 537 484.
  • the cone of the backflow preventer valve is sealed on both the outlet side and the inlet side by a membrane, the membrane arranged on the inlet side having a bore with a diameter which is smaller than the smallest inside diameter of the valve seat.
  • the bore of the membrane is preferably arranged differently from the circular shape or eccentrically to the center of the seat. In this way, a constant minimum amount can still flow through the non-return valve until the closing body is completely seated against the seat, thereby preventing an unstable operating state of a pipe separator having the non-return valve with little water withdrawal.
  • the pipe separator consists essentially of a housing 10, a plastic guide bush 12 for a relief piston 14, a valve piston 16 which cooperates with a first valve seat 18 to control the flow between an inlet 20 and an outlet 22, and which cooperates with another valve seat 24 to the To close the extraction line against the atmosphere.
  • a spring 26 engages via a spring plate 28 on a valve rod 30 in order to drive the valve piston 16 and the relief piston 14 together and to hold them in the disconnected position shown in FIG. 1 if no water is drawn behind the pipe separator.
  • a backflow preventer 32 is arranged in the pipe separator housing 10, the configuration of which is the subject of the present invention.
  • a hydraulic control valve 34 includes a control piston 38, which is sealed in a housing 36 and is held in the position shown (FIG. 1) by the force of a spring 40, in which the upper side of the relief piston 14 is connected to the atmosphere via channels 42 and 44 is.
  • the output pressure p a also bears on the control piston 38, which is supplied to the control valve 34 via a line 46.
  • the inlet pressure p e acts on the underside of the control piston 38, a channel 48 establishing a corresponding connection.
  • a pipe separator of the type shown in Figure 1 is usually always in the disconnected position. It only goes into the flow position when water is required.
  • the top of the Valve piston 16 and the underside of the relief piston 14 are always acted upon by the inlet pressure p e . Since both piston surfaces are the same size, their forces cancel each other out.
  • the force of the spring 40 presses the control piston 38 into a position according to FIG. 1, the upper side of the relief piston 14 being connected to the atmosphere via the channels 42 and 44, as a result of which the force of the spring 26 is increased the spring plate 28 and the valve rod 30 holds the valve piston 16 in the disconnected position.
  • This differential pressure acts on the control piston 38 of the control valve 34 against the force of the spring 40. If the differential pressure p e - p a > 0.5 bar, the control piston 38 moves against the spring 40 into a position in which via the channels 48 and 42 a connection from the inlet pressure p e to the top of the relief piston 14 is established.
  • the relief piston 14 is loaded with the inlet pressure p e and, together with the valve piston 16, is shifted from the separating position into the flow position according to FIG. 2, so that the backflow preventer 32 is loaded with the inlet pressure and opens.
  • a sealing element designed as a lip sealing ring 50 has a lip 54 which can be expanded by the closing body 52 of the non-return valve 32 and on which a radially inwardly protruding bead 56 is formed on the outlet side, which according to FIG. 4 is arranged at regular intervals along the Is circumferentially provided with incisions 62.
  • a further circumferential bead 58 is formed on the lip sealing ring 50, which adjoins a firmly clamped base part 60 of the lip seal 50 is located.
  • the ratios are shown in the lower half of the drawing, which result with a low flow and in the upper half of the drawing, the ratios are shown which result with an absolute tight closing.
  • a modification of the lip sealing ring 50 has V-shaped incisions 64 in the expandable lip 54 parallel to the axis of the non-return valve 32, which widen in the outflow direction. This also ensures that when the closing body 52 of the non-return valve 32 is moved into the closed position, a certain flow rate is initially maintained before absolute sealing occurs.

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)
EP89121443A 1988-11-23 1989-11-20 Soupape anti-retour Withdrawn EP0370431A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19883839485 DE3839485C1 (fr) 1988-11-23 1988-11-23
DE3839485 1988-11-23

Publications (1)

Publication Number Publication Date
EP0370431A1 true EP0370431A1 (fr) 1990-05-30

Family

ID=6367689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121443A Withdrawn EP0370431A1 (fr) 1988-11-23 1989-11-20 Soupape anti-retour

Country Status (2)

Country Link
EP (1) EP0370431A1 (fr)
DE (1) DE3839485C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114484026A (zh) * 2022-04-06 2022-05-13 艾肯（江苏）工业技术有限公司 一种带有压力可调的先导隔膜式减压阀

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2351066B1 (de) * 1973-10-11 1975-02-13 Goetzewerke Lippendichtung fuer hin- und hergehende Stangen,insbesondere fuer Hochdruckstossdaempfer
CH578137A5 (en) * 1974-08-19 1976-07-30 Elastoflon Ag Sealing ring with lip for sliding over machine component - for reliable sealing even when low friction material is used for lip
FR2367236A2 (fr) * 1976-10-05 1978-05-05 Socla Clapet de non-retour
US4350347A (en) * 1979-01-24 1982-09-21 Kaco Gmbh & Co. Radial-shaft sealing rings with heat dissipation segments
DD203093A1 (de) * 1981-12-21 1983-10-12 Eberhard Wade Radialdichtelement fuer achsen und wellen
EP0130237A1 (fr) * 1983-07-01 1985-01-09 Firma Carl Freudenberg Joint annulaire pour un arbre
WO1987002402A1 (fr) * 1985-10-21 1987-04-23 Zvi Weingarten Appareil a clapet de retenue pour conduites d'ecoulement de fluide

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3537484C1 (en) * 1985-10-22 1987-03-05 Baelz Juergen Controls Shut-off and aeration device, in particular for drinking-water systems

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2351066B1 (de) * 1973-10-11 1975-02-13 Goetzewerke Lippendichtung fuer hin- und hergehende Stangen,insbesondere fuer Hochdruckstossdaempfer
CH578137A5 (en) * 1974-08-19 1976-07-30 Elastoflon Ag Sealing ring with lip for sliding over machine component - for reliable sealing even when low friction material is used for lip
FR2367236A2 (fr) * 1976-10-05 1978-05-05 Socla Clapet de non-retour
US4350347A (en) * 1979-01-24 1982-09-21 Kaco Gmbh & Co. Radial-shaft sealing rings with heat dissipation segments
DD203093A1 (de) * 1981-12-21 1983-10-12 Eberhard Wade Radialdichtelement fuer achsen und wellen
EP0130237A1 (fr) * 1983-07-01 1985-01-09 Firma Carl Freudenberg Joint annulaire pour un arbre
WO1987002402A1 (fr) * 1985-10-21 1987-04-23 Zvi Weingarten Appareil a clapet de retenue pour conduites d'ecoulement de fluide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114484026A (zh) * 2022-04-06 2022-05-13 艾肯（江苏）工业技术有限公司 一种带有压力可调的先导隔膜式减压阀

Also Published As

Publication number Publication date
DE3839485C1 (fr) 1990-06-07

Similar Documents

Publication Publication Date Title
DE19849742B4 (de) Ventil des Membrantyps
DE2810738A1 (de) Druckgeregelte wasserversorgungsanlage
DE102017104155B4 (de) Einwegventil-Baugruppe
WO2007017033A1 (fr) Soupape de regulation de pression pneumatique
DE2543466A1 (de) Fluidgesteuertes ventil
DE4204386C2 (de) Systemtrenner
DE2450465A1 (de) Rueckstromsicherung
DE1272601B (de) Druckregler
DE2413273C3 (de) Druckminderventil
DE3323324C3 (de) Verfahren und Vorrichtung zum Steuern eines Rohrtrenners in Abhängigkeit einer an einer Vergleichsstelle vorgegebenen Druckdifferenz
DE2420175A1 (de) Elektrisches differentialventil zur fluessigkeitssteuerung
EP0811795B1 (fr) Robinet d'eau piloté
DE2638377C2 (de) Bremskraftverteiler für Zweikreisbremsanlagen
DE3839485C1 (fr)
EP0222858B2 (fr) Sectionneur de tuyau
DE2255192A1 (de) Flud-durchfluss-regelventil
DE2338782A1 (de) Hydraulik-durchflussregelventil
DE4119602C2 (de) Überströmventil, insbesondere Mehrkreisschutzventil einer Druckluftbremsanlage von Kraftfahrzeugen
EP0183909B1 (fr) Déconnecteur de tuyaux, en particulier pour conduites d'eau potable
DE2440219C3 (de) Hydraulischer Arbeitszylinder für die Formschließvorrichtung einer Kunststoff-Spritzgießmaschine
DE2255191C3 (de) Druckabhängiges Steuerventil
DE2935408C2 (de) Automatisch in Abhängigkeit von einer Druckdifferenz gesteuertes Entwässerungsventil
EP0169303A2 (fr) Valve de commande pour remorques
DE2162911A1 (de) Regelventil
EP0510326B1 (fr) Soupape

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT NL

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19901201