EP1267004A2 - Clapet anti-retour - Google Patents

Clapet anti-retour Download PDF

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Publication number
EP1267004A2
EP1267004A2 EP02011012A EP02011012A EP1267004A2 EP 1267004 A2 EP1267004 A2 EP 1267004A2 EP 02011012 A EP02011012 A EP 02011012A EP 02011012 A EP02011012 A EP 02011012A EP 1267004 A2 EP1267004 A2 EP 1267004A2
Authority
EP
European Patent Office
Prior art keywords
valve
drinking water
water system
housing
pressure zone
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Withdrawn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
EP02011012A
Other languages
German (de)
English (en)
Other versions
EP1267004A3 (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
Publication of EP1267004A2 publication Critical patent/EP1267004A2/fr
Publication of EP1267004A3 publication Critical patent/EP1267004A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E03C1/106—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 invention relates to a pipe separator for separating one from a Drinking water system refillable or refillable industrial water system from this Drinking water system containing an upstream and a downstream Backflow preventer, both in the direction from the domestic water system to the Close drinking water system, and a drain valve with a valve closing body, through which a flow between the inlet and the medium-pressure zone with one outlet arranged on the outlet-side backflow preventer is connectable, and which against a restoring force from the difference in pressures of the drinking water system and the medium pressure zone is movable in the closed position.
  • the domestic water system can be a heating system, for example.
  • Such one Heating system is filled from a drinking water system, the drinking water pipe, or refilled. It must be prevented under all circumstances that, for example, with one Pressure drop in the drinking water system Water from the domestic water system into the Drinking water system flows back.
  • Pipe separators fixed installations by "Pipe separators" known. These known pipe separators contain an upstream, i.e. located on the side of the drinking water system, and a downstream, i.e. non-return valve arranged on the side of the domestic water system. Both Backflow preventers open in the direction of the domestic water system. Between Backflow preventer is a pressure controlled drain valve.
  • This Drain valve is controlled by the drinking water pressure and opens automatically when the Drinking water pressure drops or drops. So if the hot water system from the Drinking water system is filled or refilled and a sufficient Drinking water pressure is present, then the drain valve from this pressure closed. Drinking water flows over the pressure exerted by the drinking water pressure Backflow preventer in the domestic water system. But if the drinking water pressure is below a predetermined amount drops, be it because a shut-off valve in the drinking water system shut off, be it because the drinking water pressure breaks down for some reason, opens the drain valve. Even if it has a leak check valve Service water flows back from the service water system, this flows back Process water from the drain and can never in the drinking water system reach.
  • Such an arrangement ensures that between the pressure of the drinking water system and the pressure in the Medium pressure zone always downstream of the upstream backflow preventer there is at least one pressure difference due to the return spring. Will this Pressure drop below, for example due to an increase in pressure in the Domestic water system, then opens the drain valve and reduces the pressure in the Medium pressure zone. Even in the event of an increase in pressure in the hot water system, Leaking backflow preventer no hot water in the drinking water system flow back.
  • the invention is based on the object of a pipe separator of the type mentioned Type in such a way that with a compact design, a large flow cross section in Filling direction can be realized.
  • the invention is based on the object, the maintenance of such To facilitate pipe separator.
  • cup-shaped housing with the drain valve and the non-return valve as cartridge-like, removable component is inserted into a pipe separator housing, which has a drinking water inlet and a service water outlet.
  • the cartridge-like component can then be removed from the pipe separator housing for maintenance removed and serviced or replaced.
  • This component contains all maintenance items such as ring diaphragm and valves, while the fixed installed pipe separator housing contains only channels that do not require maintenance.
  • 90 is a pot-shaped pipe separator housing.
  • the Pipe separator housing 90 has a drinking water connection 94 and a hot water connection 96.
  • Drinking water connection 94 and process water connection 96 are coaxial on opposite sides of the pipe separator housing 90 on one Axis 98 arranged.
  • On the pipe separator housing 90 is a side at the bottom Process 100 molded.
  • the cup-shaped middle part 92 is on its open Side completed by a housing cap 102.
  • the pipe separator housing 90 contains an upstream check valve 104, a downstream arrangement 106 of four to be described Backflow preventer and a flow between the backflow preventer 104 and 106 disposed drain valve, generally designated 108.
  • the Backflow preventer 104 and the drain valve 108 are coaxial with one another along the length an axis 110 perpendicular to the axis 98.
  • Array 106 of four Backflow preventer is arranged around the axis 110.
  • Coaxial with the Axis 110 is also the housing cap 102.
  • the check valves 104 and 106 and the drain valve 108 are combined into an assembly 112 to be described, which after removing the housing cap 102 as a whole along the axis 110 from the Pipe separator housing 90 can be pulled out.
  • the assembly 112 has a cup-shaped housing 114.
  • a Valve closing body 116 of the drain valve 108 is arranged in the housing 114.
  • the housing 114 can be inserted into the pipe separator housing 90, with between a space 118 is located in the pipe separator housing 90 and the housing 114.
  • the Gap 118 is through openings 120 and 122 in the lower region of the housing 114 with an annular space forming an intermediate pressure zone 124 between the Valve closing body 116 and the housing 114 connected.
  • FIG. 1 At the bottom of the housing 114 there are four concentric to the axis 110 circular passages 128, 130, 132 and 134 in which the downstream, i.e. check valve on the outlet side (see also Fig. 7).
  • Fig. 1 there is only one Passage 128 with a backflow preventer 106 visible.
  • the one in the passageways 128, 130, 132 and 134 provided backflow preventer 106 open towards an outlet duct 136 which extends from the underside 138 of the pipe separator housing 90 runs laterally to the process water connection 96.
  • the outlet channel 136 is in cross section shown again in FIGS. 5 to 7.
  • the bottom of the housing 114 is double-walled with two parallel walls 126 and 146.
  • the two walls form a chamber 148 between them.
  • This chamber 148 between the two walls 126 and 146 four webs 138, 140, 142 and 144 molded, inside which the passages 128, 130, 132 and 134 through both Extend walls. ( Figure 6).
  • the chamber 148 between the two walls of the Housing 114 is through an opening 150 with the drain channel 152 of the Pipe separator housing 114 connected.
  • the drain channel 152 is circular in cross section and laterally on the side of the outlet duct 136 opposite Pipe separator housing 90 arranged.
  • the wall 126 has a valve passage 154 in the middle.
  • the edge of the Valve passage 154 projects slightly upward in FIG. 1 and forms a valve seat 156 for the drain valve 108 with the valve closing body 116.
  • the valve closing body 116 has a valve plate which closes the sleeve-like part and on which Valve seat 156 sits in the closed position.
  • the drain valve 108 is in the open Position shown. In this position there is a connection between the medium pressure zone 124 and the chamber 148 and thus made with the drain 100.
  • Fig. 2 that is Drain valve 108 shown in the closed position. That is the operating position, in which is the middle pressure zone 124 closed.
  • a coil spring 158 arranged to the valve closing body 116 of the Drain valve 108 and around valve passage 154. Due to the spring force of the coil spring 158, the valve is depressurized Condition kept in open position.
  • the closing spring of the inlet side Backflow preventer 104 is related to the effective drinking water pressure the coil spring 158 dimensioned so that when the drinking water pressure is applied Drain valve 108 closes before the backflow preventer 104 opens.
  • a total of eight radial ribs are in the annular space forming the medium pressure zone 124 166, which extends in the vertical direction from the wall 126 to the upper end of the Extend annulus 124.
  • the ribs 166 are slightly chamfered at the upper end. This is shown in Figs. 3 and 5.
  • the valve closing body 116 of the drain valve 108 is at the upper end in Figure 1 with a Bund 167 provided.
  • the coil spring 158 presses against the lower side of FIG. 1 Federal 167.
  • the opposite side of the spring 158 rests on the bottom of the Housing 114 from.
  • the The outer edge of the ring membrane 170 lies on the edge 172 of the housing 114.
  • On a pressure piece 174 is arranged on the ring membrane 172.
  • the pressure piece is ring-shaped and is aligned with the housing 114.
  • Filter elements 180 are in the openings 176 intended.
  • FIG. 1 A rear sealing system is shown in FIG Form of an annular disk-shaped plate with a seal 182 is provided.
  • the dish 182 surrounds the upper end of the valve closing body in FIG. 1 comes in the open position the drain valve on an inwardly projecting edge of the pressure piece 174 for Investment.
  • This plate 182 forms a rear sealing system with the edge of the pressure piece and closes the connection between the Medium pressure zone 124 and the inlet chamber 178.
  • the cover 102 is screwed onto the pipe separator housing 90 in such a way that it is immediate connects to the pressure piece 174.
  • the valve closing body 116 is at the top in FIG. 1 Extends beyond the ring membrane 170 and ends in a driving element 184 in the driving element 184 is a mushroom-shaped, light-colored display element 186 screwed.
  • the cover 102 has a transparent, dome-shaped viewing window 188 on. When the drain valve 108 is open, the valve closing body 116 is upward in FIG. 1 pushed.
  • the display element 186 is immediately in front of the driving element 184 positioned on the inside of the viewing window 188 and is therefore visible from the outside.
  • at closed drain valve 108 is the valve closing body 116 down in Fig.1 pushed.
  • the display element 186 is then at a distance from the Inside of the viewing window 188 and is no longer or no longer clearly visible. This is shown in Fig.2. In this way, the respective position of the Drain valve 108 displayed.
  • the pressure test connections are again shown in plan view in Fig. 4.
  • the pressure test connections are included Provide one ball valve each.
  • a connection to the Entry chamber 178 made.
  • a connection to is established via the test connection 190 the medium pressure zone in room 124 and a test port 194 Connection to the outlet chamber 196 on the service water side.
  • the drinking water pressure is from above on the inlet side of the ring membrane 170.
  • the water passes behind the backflow preventer 104 through openings 198 in Valve closing body 116 in the medium pressure zone 124.
  • the water continues to flow through the four outlet-side backflow preventer 106 in the with the service water side Outlet chamber 196 connected outlet channel 136.
  • the water pressure in the medium pressure zone presses against the bottom Ring diaphragm 170.
  • the spring 158 exerts an additional force from below 1 on the ring membrane 170.
  • the spring 158 is designed so that one Collapse of the drinking water pressure of the valve closing body 116 upwards pushed and the drain valve 108 is opened. Everything flows in this way Process water that may be defective due to a lack of drinking water pressure Backflow preventer 104, 106 could seep into the drain 100.
  • the rear sealing system 182 is as additional security provided.
  • the plate is pressed against the annular pressure piece, so that Industrial water cannot get into the drinking water in this way either.
  • the drain valve 108 closes only when the pressure difference between drinking water and the medium pressure zone is sufficiently large to increase the force of the coil spring 158 overcome.
  • non-return valves 106 which are ring-shaped around the Discharge channel are arranged enables the fastest possible pressure equalization between the hot water side and the medium pressure zone and a high flow rate.

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  • 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)
EP02011012A 2001-06-12 2002-05-17 Clapet anti-retour Withdrawn EP1267004A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001128435 DE10128435A1 (de) 2001-06-12 2001-06-12 Rohrtrenner
DE10128435 2001-06-12

Publications (2)

Publication Number Publication Date
EP1267004A2 true EP1267004A2 (fr) 2002-12-18
EP1267004A3 EP1267004A3 (fr) 2003-09-17

Family

ID=7688002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02011012A Withdrawn EP1267004A3 (fr) 2001-06-12 2002-05-17 Clapet anti-retour

Country Status (2)

Country Link
EP (1) EP1267004A3 (fr)
DE (1) DE10128435A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2011928A3 (fr) * 2007-07-02 2011-04-06 Hans Sasserath & Co Kg Ensemble anti-retour

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL359448A1 (en) 2002-04-03 2003-10-06 Hans Sasserath & Co Kg Set of isolating valves for water supply system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3747621A (en) * 1970-10-05 1973-07-24 Watts Regulator Co Backflow preventer
US3818929A (en) * 1973-04-23 1974-06-25 H Braukmann Reduced pressure backflow preventer valve
US4013089A (en) * 1975-09-17 1977-03-22 Braukmann Armaturen Ag Back flow preventer valve
DE29903276U1 (de) * 1999-02-24 2000-08-17 Hans Sasserath & Co. KG, 41352 Korschenbroich Filterzustands-Anzeiger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2011928A3 (fr) * 2007-07-02 2011-04-06 Hans Sasserath & Co Kg Ensemble anti-retour

Also Published As

Publication number Publication date
EP1267004A3 (fr) 2003-09-17
DE10128435A1 (de) 2002-12-19

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