EP0964964A1 - Clapet antiretour - Google Patents

Clapet antiretour

Info

Publication number
EP0964964A1
EP0964964A1 EP97951950A EP97951950A EP0964964A1 EP 0964964 A1 EP0964964 A1 EP 0964964A1 EP 97951950 A EP97951950 A EP 97951950A EP 97951950 A EP97951950 A EP 97951950A EP 0964964 A1 EP0964964 A1 EP 0964964A1
Authority
EP
European Patent Office
Prior art keywords
backflow preventer
strainer
dirt trap
dirt
backflow
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Withdrawn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
EP97951950A
Other languages
German (de)
English (en)
Inventor
Hermann Grether
Christoph Weis
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.)
Neoperl GmbH
Original Assignee
Dieter Wildfang 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 Dieter Wildfang GmbH filed Critical Dieter Wildfang GmbH
Publication of EP0964964A1 publication Critical patent/EP0964964A1/fr
Withdrawn legal-status Critical Current

Links

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

Definitions

  • the invention relates to a backflow preventer, upstream of which a dirt trap is connected.
  • Such backflow preventers are installed, for example, in thermostatic mixer taps at the cold water and hot water inlet in order to prevent the cold water from entering the hot water line and vice versa. Since the control gaps for cold and hot water are often only 1 mm to 2 mm wide, the previously known non-return valves are usually preceded by dirt traps, which are to be manufactured and assembled as separate components.
  • Such a sanitary safety unit consisting of a backflow preventer and a dirt trap can only be dimensioned for a specific area of application. Other areas of use, on the other hand, may require differently dimensioned safety devices, which increases the manufacturing and warehousing work considerably.
  • the backflow preventer according to the invention is detachably connected to a front strainer, it is ensured, even with repeated assembly, that the safety unit consisting of backflow preventer and strainer strainer is not accidentally released and the installation of the strainer strainer is simply forgotten. Due to the detachable connection, it is also possible at the same time to intentionally loosen the front strainer mounted on the backflow preventer and to replace it with another strainer strainer in order to adapt the sanitary safety unit to the desired area of use.
  • a firm and correspondingly secure, but at the same time also easily detachable connection is that the dirt trap is positively connected to the backflow preventer.
  • a preferred embodiment according to the invention provides that a latching bead or a latching cam is provided on the inflow-side end face of the backflow preventer, which preferably engages behind the dirt trap in a claw-shaped manner from the outside.
  • the dirt trap is detachably interchangeably held on the backflow preventer, in particular depending on a flow regulator or similar throttle upstream or preferably downstream of the backflow preventer.
  • a dirt trap with a large filter area can be applied to a normal backflow preventer.
  • a flow regulator is connected downstream of the backflow preventer, it can be ensured that even a small screen area does not close as quickly as the dirt trap only has to deal with small amounts of water.
  • the detachable form-fitting connection of the dirt trap on the backflow preventer allows the backflow preventer of this sanitary safety unit to be combined with different sieves, which are selected depending on the intended use, the required mesh size, the required active filter area or the desired sieve shape, according to the desired area of application.
  • the backflow preventer is selectively releasably connectable to different sieves and if the backflow preventer is preferably releasably connectable to a hat filter and / or a flat filter sieve.
  • a further development according to the invention of its own worthy of protection provides that the backflow preventer with the dirt trap and possibly a flow regulator or similar throttle form a sanitary safety unit and that the backflow preventer is in particular releasably connectable on its preferably downstream face to a flow regulator or the like throttle.
  • FIG. 1 is a partial longitudinal section of a backflow preventer with a dirt trap, which dirt trap as a detachably connected to the backflow preventer cash, interchangeable front screen is formed, and
  • Fig. 2 shows a sanitary safety unit, the safety devices formed from the backflow preventer, strainer screen and flow regulator can be detachably connected to one another, the safety unit being shown in the closed position (left half) and in the open position (right half) of its backflow preventer.
  • a backflow preventer 1 is shown in a partial longitudinal section, which is designed here as a check valve.
  • the backflow preventer 1 has a housing 2 in which a valve cone 3 is located.
  • the valve cone 3 interacts with a valve seat 4 which is molded on the inside into the housing 2.
  • the valve cone 3 can be moved from the closed position shown in FIG. 1 to an open position by the water pressure of a water flow flowing in the arrow direction Pfl against the restoring force of a compression spring 5. In the case of a water flow flowing in the direction of the arrow Pfl, the valve cone 3 in the housing 2 is moved against the valve seat 4 and the backflow preventer 1 is closed to avoid undesired backflow.
  • the backflow preventer 1 is connected upstream of a dirt strainer 6.
  • This dirt strainer 6 is designed as a replaceable attachable screen that can be detachably connected to the backflow preventer 1.
  • the strainer 6 Since the strainer 6 is detachably connected to the backflow preventer 1, it is ensured even with repeated assembly that that the existing of the backflow preventer 1 and the strainer 6. The fuse unit is not accidentally released and the reinstallation of the strainer is simply forgotten. Due to the detachable connection, it is also possible, at the same time, to loosen the strainer 6 installed on the backflow preventer 1 intentionally, for example to replace the strainer 6 designed as a hat filter in FIG. 1 with another strainer and thus to sanitary safety unit to the desired application to be able to adapt.
  • the detachable connection of the backflow preventer 1 with the strainer 6 allows the backflow preventer 1 to be combined with different sieves which are selected depending on the intended use, the mesh size required, the active filter surface required or, for example, the desired sieve shape.
  • the strainer 6 is positively connected to the backflow preventer 1.
  • a locking bead 7 is provided on the inflow-side end face of the backflow preventer 1, which the dirt trap 6 engages behind in a claw-shaped manner from the outside.
  • the dirt trap sieve 6 has on its end facing the latching bead 7 an annular inwardly directed indentation which forms a latching connection with the latching bead 7.
  • the dirt trap screen 6 can be designed as a metal screen, which is held on the check valve 1 via a snap or snap connection. However, it is also possible that a dirt strainer 6 designed as a metal strainer has a plastic edge which carries the corresponding snap or latching means for releasable attachment to the backflow preventer 1. However, the embodiment shown here is preferred, in which the dirt trap screen 6 is made of plastic and is formed as an injection molded part.
  • the safety unit which consists at least of the backflow preventer 1 and the dirt trap sieve 6, can be used with or without a downstream flow regulator or similar throttle.
  • a sanitary security unit is shown, which is formed from a backflow preventer 10, a strainer 6 and a flow regulator 8.
  • the dirt trap screen 6 of this securing unit is also designed as an interchangeable front screen that can be detachably connected to the backflow preventer 10. While the dirt trap 6 is connected upstream of the backflow preventer 10, the flow regulator 8 is detachably connected to the backflow preventer 10 on the downstream end side thereof.
  • a circumferential locking cam 9 is provided on the inner circumference of the housing 2 of the backflow preventer 10, which interacts with a locking groove 11 arranged on the outer circumference of the flow rate regulator 8.
  • the backflow preventer 10 is connected to the flow regulator 8, it is ensured that even the comparatively small sieve area of the strainer sieve 6 shown in FIG. 2 does not close as quickly, since the sanitary safety unit only has to deal with smaller quantities of water.
  • the dirt trap sieve 6 shown in FIG. 2 and designed as a flat sieve can, if necessary, be exchanged for another dirt trap sieve, for example a hat filter, with a large filter area, which makes the downstream flow regulator 8 unnecessary.
  • the flow regulator shown in FIG. 2 has a control core 12 which tapers conically in the flow direction and which cooperates with a rubber ring 13 which can be expanded as a function of the water pressure.
  • the check valve 10 can also be followed by other restrictors.
  • the safety units shown here and consisting of the strainer 6 and at least the non-return valve 1, 10 can be installed in shower heads, shower heads, fittings and other outlet devices. These fittings can also protect sensitive ceramic disks in fittings. In this case, these securing units can be inserted into a form-fitting front recess in an inflow line.
  • the backflow preventer 1, 10 shown here are versatile and are characterized by a high level of functional reliability.

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)
  • Domestic Plumbing Installations (AREA)

Abstract

L'invention concerne un clapet antiretour (1) comportant en amont un tamis anti-encrassement monté côté arrivée. Ce clapet antiretour (1) est caractérisé en ce que le tamis anti-encrassement se présente sous la forme d'un tamis adaptable remplaçable et pouvant être relié de manière amovible au clapet antiretour (1). Ce dernier étant relié de manière amovible à un tamis adaptable (6), il n'y a aucun risque que l'ensemble de sécurité constitué dudit clapet antiretour et dudit tamis (6) se désolidarise accidentellement lors du remontage et que l'opérateur oublie de remonter ledit tamis (6). Néanmoins, puisque la liaison est amovible, il est également possible de désolidariser intentionnellement le tamis adaptable (6) et de le remplacer par un autre tamis anti-encrassement pour adapter l'ensemble de sécurité sanitaire au domaine d'application souhaité.
EP97951950A 1997-02-25 1997-11-22 Clapet antiretour Withdrawn EP0964964A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29703335U DE29703335U1 (de) 1997-02-25 1997-02-25 Rückflußverhinderer
DE29703335U 1997-02-25
PCT/EP1997/006540 WO1998038393A1 (fr) 1997-02-25 1997-11-22 Clapet antiretour

Publications (1)

Publication Number Publication Date
EP0964964A1 true EP0964964A1 (fr) 1999-12-22

Family

ID=8036494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97951950A Withdrawn EP0964964A1 (fr) 1997-02-25 1997-11-22 Clapet antiretour

Country Status (4)

Country Link
EP (1) EP0964964A1 (fr)
AU (1) AU5555098A (fr)
DE (1) DE29703335U1 (fr)
WO (1) WO1998038393A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10107247A1 (de) * 2001-02-16 2002-08-22 Kludi Armaturen Scheffer Vertr Wasserleitungselement mit Rückflussverhinderer
DE10311501B4 (de) * 2003-03-15 2011-06-16 Neoperl Gmbh Einbauteil zum Einsetzen in eine Gas- oder Flüssigkeitsleitung
DE102004033770A1 (de) * 2004-07-12 2006-02-02 Egon Birkenmaier Vorrichtung zur Wasserzuteilung für eine Spüleinrichtung und Spülkasten
DE102007056148B4 (de) * 2007-11-16 2016-09-01 Neoperl Gmbh Perlstrahler
DE202016003402U1 (de) 2016-05-28 2017-08-30 Neoperl Gmbh Sanitäre Einsetzeinheit
DE102016006498B4 (de) * 2016-05-28 2018-02-15 Neoperl Gmbh Sanitäre Einsetzeinheit
DE102016012646B4 (de) 2016-10-24 2018-05-03 Neoperl Gmbh Einsetzteil mit einem wasserführenden Patronengehäuse
DE202016006536U1 (de) 2016-10-24 2018-01-25 Neoperl Gmbh Einsetzteil mit einem wasserführenden Patronengehäuse
DE102017112410A1 (de) * 2017-06-06 2018-12-06 Neoperl Gmbh Schlauchleitung sowie Filtersieb für eine Schlauchleitung
DE102017128758A1 (de) * 2017-12-04 2019-06-06 Neoperl Gmbh Sanitäre Einsetzeinheit
DE102018200530A1 (de) 2018-01-15 2019-07-18 Hansgrohe Se Fluidleitungseinsatz
DE102018205748A1 (de) 2018-04-16 2019-10-17 Hansgrohe Se Sanitärventilblock

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629393A (en) * 1949-05-05 1953-02-24 Jesse D Langdon Combined check valve and vent valve
US4667349A (en) * 1985-07-19 1987-05-26 Sang M. Park Water saving stopcock
DE3642356C2 (de) * 1986-12-11 1995-10-05 Wildfang Dieter Gmbh Strahlregler
DE3817270A1 (de) * 1988-05-20 1989-11-30 Wildfang Dieter Kg Strahlregler
DE3820837A1 (de) * 1988-06-21 1990-01-04 Wildfang Dieter Kg Auslaufrohr fuer sanitaer-armaturen
DE4333549A1 (de) * 1993-10-01 1995-04-13 Wildfang Dieter Gmbh Filtersieb für Wasserauslaufarmaturen
DE9410282U1 (de) * 1994-06-24 1994-08-11 Knebel & Roettger Fa Schwenkauslauf an einer Sanitärarmatur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9838393A1 *

Also Published As

Publication number Publication date
WO1998038393A1 (fr) 1998-09-03
DE29703335U1 (de) 1997-04-10
AU5555098A (en) 1998-09-18

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