EP0305557A1 - Armature d'écoulement pour de l'eau potable - Google Patents

Armature d'écoulement pour de l'eau potable Download PDF

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Publication number
EP0305557A1
EP0305557A1 EP87112648A EP87112648A EP0305557A1 EP 0305557 A1 EP0305557 A1 EP 0305557A1 EP 87112648 A EP87112648 A EP 87112648A EP 87112648 A EP87112648 A EP 87112648A EP 0305557 A1 EP0305557 A1 EP 0305557A1
Authority
EP
European Patent Office
Prior art keywords
valve
pressure
inlet
drinking water
return
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.)
Granted
Application number
EP87112648A
Other languages
German (de)
English (en)
Other versions
EP0305557B1 (fr
Inventor
Claus Dipl.-Ing. Urner
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8197236&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0305557(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Honeywell Braukmann GmbH filed Critical Honeywell Braukmann GmbH
Priority to DE8787112648T priority Critical patent/DE3762532D1/de
Priority to AT87112648T priority patent/ATE53878T1/de
Priority to EP87112648A priority patent/EP0305557B1/fr
Publication of EP0305557A1 publication Critical patent/EP0305557A1/fr
Application granted granted Critical
Publication of EP0305557B1 publication Critical patent/EP0305557B1/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
    • E03C1/02—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 drinking water flow fitting according to the preamble of claim 1.
  • Such a fitting is known from DE-OS 34 42 748.
  • an inlet valve is connected upstream of the pipe separator, the actuating piston of which can optionally be connected to the inlet pressure or to the atmosphere via a pilot valve depending on the pressure conditions at the inlet and outlet of the valve.
  • a holding valve arranged in a bypass to a non-return valve serves to avoid switching vibrations, and a pilot valve also serves to vent the pipe string between the inlet valve and the pipe separator when the inlet valve is closed.
  • the main idea of the present invention is to provide a pressure compensation valve which allows the pressure difference introduced by the spring of the non-return valve to compensate for the pressure difference (0.5 bar) introduced in the absence of water withdrawal and when the non-return valve is closed.
  • the drinking water flow fitting comprises, as an essential component, a pipe separator 10 which has a cross-shaped housing 12.
  • a first valve seat 18 is arranged in the housing 12 between an inlet connection 14 of the housing 12 and an outlet connection 16. Coaxial to this first valve seat 18 there is a second valve seat 20 which is offset downwards.
  • a tubular sealing piston 22 which is closed at the top is displaceable in both valve seats 18, 20 and which have the same diameter and forms a check valve with the first valve seat 18 and with the valve valve 18 second valve seat 20 a drain valve.
  • the drain valve 20, 22 opens into a drain port 24, below which a collecting funnel 26 is arranged. Between an inwardly drawn collar 28 of the drain port 24 and the locking piston 22, a loading spring 30 is supported, which acts on the locking piston 22 so that it is moved into a position closing the check valve 18, 22.
  • a check valve 32 is arranged, which is modified according to the invention and will be described in more detail below.
  • a relief piston 36 is connected via a rod 34, which is guided in a sealed manner in the housing 12.
  • An inwardly projecting collar of the housing 12 limits the displacement of the closure piston 22, rod 34 and relief piston 36 upwards.
  • the space above the relief piston 36 can optionally be connected to the inlet pressure or to the atmosphere via a 3-way valve 38.
  • the 3-way valve 38 is controlled by a pressure comparison device 40 via a tappet 72.
  • the pressure comparison device 40 comprises a housing divided by a membrane 70 into an upper chamber 42 and a lower chamber 44, the upper chamber 42 via a line 48, 48 ⁇ to the inlet pressure and the lower chamber 44 via a line 50 to the outlet pressure connected.
  • a spring 46 in the lower chamber 44 counteracts the inlet pressure in the same sense as the outlet pressure.
  • a branch line 48 ' which carries the inlet pressure, can be connected via the 3-way valve 38 to the chamber above the relief piston 36; this space can likewise be vented into the atmosphere via the 3-way valve 38 and a line 52 or emptied into a funnel 54.
  • the backflow preventer valve 32 comprises a valve seat 56 which jumps inwards in the extraction line and which cooperates with a closing body 58.
  • the closing body 58 is guided via a valve rod 60 in a hub 62, which is connected to the inner tube wall via radial webs 64.
  • a spring 66 is supported between the hub 62 and the closing body 58 and presses the closing body 58 against the valve seat 56.
  • a pressure compensation valve 68 is installed in the closing body 58, which is preferably designed as a ball check valve.
  • a non-return valve which corresponds to a commercial non-return valve except for the modification of the valve rod and can be used in FIG. 1 instead of the non-return valve 32.
  • the backflow preventer valve 100 consists of two housing halves 102, 104 which are provided with flanges 106 and 108 on the inlet and outlet sides.
  • a radially directed bore 110 is machined into the outlet-side flange 108, via which the outlet-side pressure is removed.
  • Both housing halves 102 and 104 are connected to one another by screws with the interposition of an elastic valve seat seal 112.
  • Radially directed webs 114 and 116 are formed on both housing halves 102 and 104, which merge into central hubs 118 and 120, into which threaded sleeves 122 and 124 are screwed. These threaded sleeves serve as Slide bushings for a valve rod 126.
  • a valve plate 130 pushed over the valve rod 126 against a stop 128 is secured by a screw nut 132. Between the stop 128 and the threaded sleeve 124, a spring 134 is supported, which tries to push the valve plate 130 together with the valve rod 126 against the valve seat 112.
  • the backflow preventer valve As far as the backflow preventer valve has been described so far, it is a known and commercially available valve.
  • a bore 136 is made in the valve rod 26 from the front, which ends behind the valve plate 130 and connects the space in front of the valve plate 130 with the space behind the valve plate 130.
  • a ball check valve 138 is inserted into the bore 136 as a pressure compensation valve.
  • This ball check valve 138 is also of a commercially available type and is screwed into the bore 136 of the valve rod 126 from the front.
  • the open state of the check valve with open ball check valve is shown above the line of symmetry and the closed state of the check valve with closed ball check valve is shown below the line of symmetry.
  • the pressure difference of 0.5 bar specified by the spring 66 is reduced by the pressure compensation valve 68, so that pressure compensation takes place and the pressures in both chambers 42, 44 of the pressure comparison device 40 correspond to one another.
  • the spring 46 pushes the actuating rod 72 of the 3-way valve 38 upward, so that the space above the relief piston 36 is connected to the atmosphere via line 52.
  • the pipe separator thus goes into the disconnected position due to the action of the spring 30, in which the shut-off valve 18, 22 is closed and the drain valve 20, 22 is open.
  • the non-return valve 32 goes into the blocking position shown, and the pressure equalization valve 68 is used to equalize the pressure on the inlet side and the pressure on the outlet side. If the pressure is equal, however, the spring 46 of the pressure comparison device 40 brings the 3-way valve 38 into a position via the actuating rod 72, in which the space above the relief piston 36 is vented, so that the pipe separator returns to the disconnected position, in which the check valve 18, 22 is closed.

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)
  • Safety Valves (AREA)
  • Check Valves (AREA)
  • Water Treatment By Sorption (AREA)
EP87112648A 1987-08-31 1987-08-31 Armature d'écoulement pour de l'eau potable Expired - Lifetime EP0305557B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8787112648T DE3762532D1 (de) 1987-08-31 1987-08-31 Trinkwasser-durchflussarmatur.
AT87112648T ATE53878T1 (de) 1987-08-31 1987-08-31 Trinkwasser-durchflussarmatur.
EP87112648A EP0305557B1 (fr) 1987-08-31 1987-08-31 Armature d'écoulement pour de l'eau potable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87112648A EP0305557B1 (fr) 1987-08-31 1987-08-31 Armature d'écoulement pour de l'eau potable

Publications (2)

Publication Number Publication Date
EP0305557A1 true EP0305557A1 (fr) 1989-03-08
EP0305557B1 EP0305557B1 (fr) 1990-05-02

Family

ID=8197236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112648A Expired - Lifetime EP0305557B1 (fr) 1987-08-31 1987-08-31 Armature d'écoulement pour de l'eau potable

Country Status (3)

Country Link
EP (1) EP0305557B1 (fr)
AT (1) ATE53878T1 (fr)
DE (1) DE3762532D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555837A1 (fr) * 1992-02-14 1993-08-18 Honeywell Ag Dispositif anti-retour
EP1334761A1 (fr) * 2002-02-07 2003-08-13 Bucher Guyer AG Dispositif de filtration à écoulement tangential et vanne d'étranglement anti-refoulement pour une telle installation et méthode de fonctionnement d'une telle installation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE206551C (fr) *
DE577314C (de) * 1931-06-21 1933-05-29 Hermann Baumann Vorrichtung zur Verhinderung des Zurueckfliessens von Wasser in Wasserleitungen
WO1984002544A1 (fr) * 1982-12-21 1984-07-05 Gruenbeck Josef Wasseraufb Separateur de tuyau
DE3347805A1 (de) * 1983-06-29 1985-02-28 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum anpassen des ansprechdruckes an die in der abflussleitung gegebenen druckverhaeltnisse bei einer einrichtung zum verhindern des rueckflusses eines mediums aus einer abflussleitung zurueck in die zuflussleitung
DE3442748A1 (de) * 1984-11-23 1986-05-28 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum schutz von trinkwasserleitungen
EP0189499A1 (fr) * 1985-01-30 1986-08-06 Honeywell-Braukmann GmbH Déconnecteur de tuyau
DE3520250A1 (de) * 1985-06-05 1986-12-11 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Rohrtrenner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE206551C (fr) *
DE577314C (de) * 1931-06-21 1933-05-29 Hermann Baumann Vorrichtung zur Verhinderung des Zurueckfliessens von Wasser in Wasserleitungen
WO1984002544A1 (fr) * 1982-12-21 1984-07-05 Gruenbeck Josef Wasseraufb Separateur de tuyau
DE3347805A1 (de) * 1983-06-29 1985-02-28 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Vorrichtung zum anpassen des ansprechdruckes an die in der abflussleitung gegebenen druckverhaeltnisse bei einer einrichtung zum verhindern des rueckflusses eines mediums aus einer abflussleitung zurueck in die zuflussleitung
DE3442748A1 (de) * 1984-11-23 1986-05-28 Lang Apparatebau GmbH, 8227 Siegsdorf Vorrichtung zum schutz von trinkwasserleitungen
EP0189499A1 (fr) * 1985-01-30 1986-08-06 Honeywell-Braukmann GmbH Déconnecteur de tuyau
DE3520250A1 (de) * 1985-06-05 1986-12-11 Grünbeck Wasseraufbereitung GmbH, 8884 Höchstädt Rohrtrenner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555837A1 (fr) * 1992-02-14 1993-08-18 Honeywell Ag Dispositif anti-retour
EP1334761A1 (fr) * 2002-02-07 2003-08-13 Bucher Guyer AG Dispositif de filtration à écoulement tangential et vanne d'étranglement anti-refoulement pour une telle installation et méthode de fonctionnement d'une telle installation

Also Published As

Publication number Publication date
EP0305557B1 (fr) 1990-05-02
DE3762532D1 (de) 1990-06-07
ATE53878T1 (de) 1990-06-15

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