EP3048205A1 - Dispositif de separation de systeme - Google Patents

Dispositif de separation de systeme Download PDF

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Publication number
EP3048205A1
EP3048205A1 EP15191598.0A EP15191598A EP3048205A1 EP 3048205 A1 EP3048205 A1 EP 3048205A1 EP 15191598 A EP15191598 A EP 15191598A EP 3048205 A1 EP3048205 A1 EP 3048205A1
Authority
EP
European Patent Office
Prior art keywords
housing
upstream
pressure
downstream
cartridge
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
EP15191598.0A
Other languages
German (de)
English (en)
Other versions
EP3048205B1 (fr
Inventor
Willi Hecking
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.)
Hans Sasserath GmbH and Co KG
Original Assignee
Hans Sasserath GmbH and Co KG
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 Hans Sasserath GmbH and Co KG filed Critical Hans Sasserath GmbH and Co KG
Priority to PL15191598T priority Critical patent/PL3048205T3/pl
Publication of EP3048205A1 publication Critical patent/EP3048205A1/fr
Application granted granted Critical
Publication of EP3048205B1 publication Critical patent/EP3048205B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E03C1/106—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
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons or valves, in the pipe systems
    • E03B7/077—Arrangement of backflow preventing devices
    • 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

  • System separators are used to safely prevent backflow of liquid from a downstream liquid system into an upstream liquid system.
  • the upstream fluid system may be a public drinking water system, to which a hose or, for example, a temporary tap can be connected.
  • a variety of system separators are known in which the downstream fluid system is a heating system. It must be absolutely avoided that contaminated water or dirt from the tap or from the heating system during refilling or topping up the heating system or when tapping back into the drinking water system.
  • backflow preventer There are so-called backflow preventer. These are spring loaded valves which allow fluid flow in only one direction, namely from the upstream to the downstream system. Such backflow preventers can be leaking. Therefore, e.g. For drinking water and heating water a separation of the liquid systems alone by backflow preventer not allowed. There must be a physical separation of the fluid systems so that in case of failure between the systems a connection to a drain and to the atmosphere is made.
  • System separators include an upstream backflow preventer connected to the upstream liquid system and a downstream backflow preventer.
  • a pressure-controlled bleed valve is arranged between the non-return valves, which creates a passage from the upstream liquid system to the downstream liquid system when there is a sufficient pressure differential between the two liquid systems so that the liquid can safely flow only from the upstream to the downstream liquid system. If this pressure drop does not exist, the drain valve establishes a connection of the space between the backflow preventers with the atmosphere and a drain.
  • the drain valve is a displaceable in a valve body piston.
  • This piston has a central passage and at its downstream end face an annular valve seat, which comes to a valve-tight ring seal axially to the plant.
  • the passage then establishes an atmosphere-closed connection between the upstream and downstream fluid systems.
  • the upstream backflow preventer sits in the passage.
  • acts on the piston against an effective spring in the opening direction acts on the piston against an effective spring in the opening direction, the pressure difference between the inlet pressure in the upstream fluid system and a mean pressure, which is established in a medium-pressure space between the piston and the downstream non-return valve.
  • the drain valve body is arranged coaxially with the non-return valve.
  • the inlet pressure in the drinking water system initially forces the piston of the discharge valve against the action of the spring acting on it into its operating position in which it connects to the drinking water system Atmosphere and interrupts the process and establishes a connection between drinking water system and heating system. Then, the upstream and downstream backflow preventers are pressed. It flows drinking water to the heating system and fills it up or down.
  • the downstream system is then filled to an outlet pressure that is below the inlet pressure.
  • the difference between inlet pressure and outlet pressure is determined by the pressure drop at the backflow preventer, that is by the strength of the springs of the non-return valve.
  • the intermediate pressure is in accordance with the pressure drop across the upstream backflow preventer and the pressure drop across the upstream backflow preventer.
  • the Pressure difference between inlet pressure and medium pressure must be greater than a limit determined by the loading spring of the valve body of the drain valve.
  • the further housing opening can be closed in particular with a lid.
  • the arrangement according to the invention allows the removal of the cartridge with all the essential components transversely to the flow direction. This allows a simpler housing shape, which is particularly economical to produce.
  • the housing may be formed continuously tubular. As a result, the pressure loss can be minimized.
  • the housing made of brass or other pressure-resistant material used to the water pressure and the cartridge is made of plastic or other material, which does not withstand the water pressure used.
  • the water pressure which can reach high values, is absorbed by the housing.
  • the cartridge is only for creation a component in which the components are united and which is removable as a whole. Accordingly, it may be formed thin-walled and manufactured as a simple injection molded part.
  • the lid is completely removable and can be screwed to the housing.
  • the lid may alternatively be hinged to the housing.
  • the lid on a radial horrstutzen which is aligned with a radial fürstutzen in the cartridge.
  • the stopper which can be closed with a stopper, allows pressure measurement in the medium pressure chamber of the system separator.
  • FIG. 1 shows a system separator, generally designated 10.
  • the system separator 10 has a substantially tubular housing 12 made of brass or other pressure-resistant material.
  • an inlet-side connecting piece 14 is formed with an external thread 18 on the housing 12.
  • the connecting piece 14 forms an inlet with inlet pressure.
  • an outlet-side connection nozzle 16 with an external thread 20 is integrally formed on the housing 12.
  • the outlet-side connecting piece 16 forms an outlet with outlet pressure.
  • the inlet-side connecting piece 14 can be connected with a connecting piece 22 and a drinking water supply via a pipe.
  • a heating or service water system or a tapping point can be connected to the outlet-side connecting piece with a connecting piece 24 and via a pipe.
  • the connecting piece 22 has an external thread 21 on the side of the pipeline. With the external thread 21, the connector 22 is screwed into the pipeline.
  • the housing side, the connector 22 has a relation to the connector 22 freely rotatable coupling nut 23 with an internal thread.
  • the housing 12 of the system separator 10 can then be screwed to the union nut 23 and rotated to a desired angular position. In the same way, the outlet-side connector 24 is screwed.
  • the flow direction through the system separator 10 is illustrated by arrows 26 and 28.
  • the inlet-side connecting piece 14 forms an inlet in which inlet pressure prevails.
  • a closable with a plug 30, side access 32 is used to measure the inlet pressure.
  • the outlet-side connecting piece 16 forms an outlet, prevails in the outlet pressure.
  • a closable with a stopper 34 access 36 is used to measure the output pressure.
  • the housing 12 has an enlarged diameter and forms a central region 38.
  • a substantially tubular cartridge 40 is arranged.
  • the cartridge 40 is an injection molded part, which is made of inexpensive plastic.
  • Flat annular projections 42 and 44 at both ends secure the position of the cartridge 40 within the area 38.
  • square and circular projections 46 and 48 provided on the outside of the cartridge 40. The projections 46 and 48 engage in corresponding recesses 50 on the inner wall of the housing 12. This is in the exploded view in FIG FIG. 3 clearly visible.
  • the housing 10 is formed in two parts and has a semi-cylindrical cover 52 in the area 38.
  • the lid 52 is completely releasable in the present embodiment.
  • four screws 54 are provided for fastening the lid 52 .
  • the screws 54 respectively screw the cover 52 on a protruding, integrally formed on the housing 12 nut 92.
  • the composite assembly is in FIG. 1 to recognize.
  • FIG. 3 shows the dissolved lid 52.
  • a piston-shaped valve closing body 92 is axially movable sealingly performed. This is in FIG. 4 and 5 again shown in detail.
  • the valve closing body 56 opens and closes against the spring pressure of a spring 64, a drain 58 which extends in the radial direction downwards.
  • FIG. 4 shows the valve closing body 56 in a passage position in which the drain 58 is closed.
  • FIG. 5 shows the arrangement with the drain valve open.
  • the spring 64 is supported on an annular spring abutment 66. On the spring abutment 66 a plurality of projections 68 are formed, which extend in the axial direction to the inlet and are arranged in a circle.
  • the spring 64 is guided on the projections 68.
  • the spring abutment 66 forms, with a seal 44, the valve seat for the drain valve 56 formed with the valve closing body.
  • the drain 58 is formed by a nozzle 60, which is formed in the radial direction of the cartridge 40.
  • the nozzle 60 protrudes into a socket 62, which is formed coaxially with the nozzle 60 to the housing 12.
  • An outlet funnel 94 is clipped to the lower edge of the nozzle 60 on the nozzle 62. This is in FIG. 2 clearly visible.
  • a compensation piston 70 is guided in the axial direction. With the compensation piston 70 opening and closing of the drain valve is avoided at very small pressure fluctuations of the inlet pressure.
  • the operation of such a compensation piston is from the DE 10 2006 030 973 B3 known and therefore does not need to be described again here.
  • An alternative embodiment (not shown) operates with a cartridge 40 without compensating pistons.
  • the compensation piston 70 serves as a valve seat for an upstream backflow preventer 72 with a seal 74.
  • the seal 74 is held in position by a screw ring 78 screwed into the compensation piston 70.
  • the backflow preventer 72 has a spring 76 with stronger spring force than the comparatively weak spring force of the spring 64.
  • a downstream, cartridge-shaped backflow preventer 80 is inserted from the downstream side of the cartridge 40 into the spring abutment 66.
  • the cartridge 40 also has on both sides of end pieces 82 and 84, which are screwed with an external thread 86 in the cartridge 40.
  • a sieve 98 is arranged on the inlet side between end piece 82 and valve closing body 56 in the cartridge 40.
  • a medium pressure chamber 88 is formed with medium pressure.
  • a barrier is opened. Due to the increased inlet pressure, the valve closing body 56 is pushed to the right. The drain 58 is closed. This is in FIG. 4 shown. Subsequently, the backflow preventers 72 and 80 open. Water can flow from the inlet to the outlet. When the pressure difference between inlet pressure and medium pressure drops, due to pressure fluctuations in the inlet pressure, for example, the drain valve opens. This is in FIG. 5 shown. This prevents water from flowing back into the upstream drinking water system. It flows through the drain to the outside, as is common in system separators. The pressure in the medium-pressure space can be detected via an access 90.
  • the described arrangement has all the features of a commercial system separator. However, the arrangement can be manufactured considerably less expensive and being repaired.
  • the cartridge 40 can be easily removed and serviced or replaced after opening the lid 52.
  • the linear arrangement provides a lower flow resistance than conventional arrangements.

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)
EP15191598.0A 2015-01-26 2015-10-27 Dispositif de séparation de système Active EP3048205B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15191598T PL3048205T3 (pl) 2015-01-26 2015-10-27 Systemowy układ rozdzielczy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015100340.4U DE202015100340U1 (de) 2015-01-26 2015-01-26 Systemtrenneranordnung

Publications (2)

Publication Number Publication Date
EP3048205A1 true EP3048205A1 (fr) 2016-07-27
EP3048205B1 EP3048205B1 (fr) 2019-12-11

Family

ID=54365028

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15191598.0A Active EP3048205B1 (fr) 2015-01-26 2015-10-27 Dispositif de séparation de système

Country Status (4)

Country Link
EP (1) EP3048205B1 (fr)
DE (1) DE202015100340U1 (fr)
ES (1) ES2770019T3 (fr)
PL (1) PL3048205T3 (fr)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217334A1 (de) 1992-05-26 1993-12-02 Waletzko Armaturen Gmbh Systemtrennungsarmatur
WO1995000784A1 (fr) * 1993-06-23 1995-01-05 Valvtec Pty. Ltd. Clapet anti-retour a zone de pression reduite
WO2000070246A1 (fr) * 1999-05-18 2000-11-23 Zurn Industries, Inc. Clapet anti-retour
US20030000577A1 (en) * 2001-06-28 2003-01-02 Zurn Industries, Inc. Backflow prevention apparatus
DE10214747A1 (de) 2002-04-03 2003-10-16 Sasserath & Co Kg H Ventilanordnung für einen Rohrtrenner
US20040134537A1 (en) * 2002-10-23 2004-07-15 Noll Brad L. Double check valve assembly
DE102005031422B3 (de) 2005-07-04 2006-12-21 Hans Sasserath & Co. Kg Systemtrenner
EP1830009A1 (fr) * 2006-03-01 2007-09-05 Rain Bird Corporation Dispositif anti refoulement
DE102006030973B3 (de) 2005-07-04 2007-12-13 Hans Sasserath & Co. Kg Systemtrenner
DE102007030654A1 (de) 2007-07-02 2009-01-08 Hans Sasserath & Co. Kg Rohrtrenneranordnung
DE202009001951U1 (de) 2008-10-02 2010-03-04 M T W - Endoskopie Inhaber Wolfgang Haag E.K. Medizinisches Instrument

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4217334A1 (de) 1992-05-26 1993-12-02 Waletzko Armaturen Gmbh Systemtrennungsarmatur
WO1995000784A1 (fr) * 1993-06-23 1995-01-05 Valvtec Pty. Ltd. Clapet anti-retour a zone de pression reduite
WO2000070246A1 (fr) * 1999-05-18 2000-11-23 Zurn Industries, Inc. Clapet anti-retour
US20030000577A1 (en) * 2001-06-28 2003-01-02 Zurn Industries, Inc. Backflow prevention apparatus
DE10214747A1 (de) 2002-04-03 2003-10-16 Sasserath & Co Kg H Ventilanordnung für einen Rohrtrenner
US20040134537A1 (en) * 2002-10-23 2004-07-15 Noll Brad L. Double check valve assembly
DE102005031422B3 (de) 2005-07-04 2006-12-21 Hans Sasserath & Co. Kg Systemtrenner
DE102006030973B3 (de) 2005-07-04 2007-12-13 Hans Sasserath & Co. Kg Systemtrenner
EP1830009A1 (fr) * 2006-03-01 2007-09-05 Rain Bird Corporation Dispositif anti refoulement
DE102007030654A1 (de) 2007-07-02 2009-01-08 Hans Sasserath & Co. Kg Rohrtrenneranordnung
DE202009001951U1 (de) 2008-10-02 2010-03-04 M T W - Endoskopie Inhaber Wolfgang Haag E.K. Medizinisches Instrument

Also Published As

Publication number Publication date
EP3048205B1 (fr) 2019-12-11
DE202015100340U1 (de) 2016-04-29
PL3048205T3 (pl) 2020-05-18
ES2770019T3 (es) 2020-06-30

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