EP3399112A1 - Bouche à eau pourvue de clapet antiretour dans la partie supérieure - Google Patents

Bouche à eau pourvue de clapet antiretour dans la partie supérieure Download PDF

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Publication number
EP3399112A1
EP3399112A1 EP18405011.0A EP18405011A EP3399112A1 EP 3399112 A1 EP3399112 A1 EP 3399112A1 EP 18405011 A EP18405011 A EP 18405011A EP 3399112 A1 EP3399112 A1 EP 3399112A1
Authority
EP
European Patent Office
Prior art keywords
valve
spring
hydrant
seal
water
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
EP18405011.0A
Other languages
German (de)
English (en)
Other versions
EP3399112B1 (fr
Inventor
Dieter Jermann
Ralph Meier
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.)
Hinni AG
Original Assignee
Hinni AG
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 Hinni AG filed Critical Hinni AG
Publication of EP3399112A1 publication Critical patent/EP3399112A1/fr
Application granted granted Critical
Publication of EP3399112B1 publication Critical patent/EP3399112B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/16—Devices for retaining foreign matter, e.g. sand
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/04—Column hydrants
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/08—Underground hydrants
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B9/00—Methods or installations for drawing-off water
    • E03B9/02—Hydrants; Arrangements of valves therein; Keys for hydrants
    • E03B9/14—Draining devices for hydrants
    • 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 hydrant in the configuration as a lower or upper hydrant hydrant with existing in the upper part backflow preventer to exclude with certainty that accidental or malignant media, such as dirty water or health-hazardous substances, can be introduced through the hydrant in the water network.
  • the upper part is formed by an underfloor attachment, which is concealed underground together with the riser.
  • the upper part is an extension tube, which rises above the surface.
  • Hydrants in the form of underfloor or above-ground hydrants with direct connection to the underground water supply network serve basically for water extraction, especially for fire-fighting operations.
  • water extraction especially for fire-fighting operations.
  • the EP 1 347 104 A2 relates to a water outlet valve for installation in a house wall with a mains connection, an outlet and an actuating element.
  • the actuator has an axially displaceable base body connection to which a spring attaches, on the other hand carries a closure body which shuts off the valve seat.
  • a spring attaches on the other hand carries a closure body which shuts off the valve seat.
  • the valve has a drain mechanism that is automatically activated when the valve is closed.
  • the FR 2 773 373 A1 has an underfloor hydrant with non-return valve to the object.
  • an upper valve seat opens and a spring-loaded closure body located below lifts upwardly from the main valve seat, leaving the main valve in the open position.
  • a second spring holds an additional valve suspended on a plunger on a second valve seat, then the influx of foreign medium introduced into the hydrant into the water supply network is blocked.
  • the additional valve is lifted from the second valve seat and the water flow from the flow pressure against the force of the second spring allows.
  • the main valve is closed, the upper valve seat remains closed and the closure body is pressed against the force of the first spring on the main valve seat.
  • the second spring pulls the additional valve onto the second valve seat, so that an additional shut-off occurs with the closed main valve and no foreign medium can enter the water supply network via the hydrant.
  • an assembly for preventing the introduction of foreign matter into the water supply network has a spring-loaded additional valve arranged above the main valve in the riser, which is lifted off the seal seat by the flow pressure when the water is removed. Normally, the auxiliary valve is closed, so that foreign substances can not get into the direction of the main valve and on to the water supply network when introducing foreign substances via the hose connection.
  • the acting on the additional valve spring is supported on the valve stem and is guided on this. Foreign substances introduced into the hydrants are collected in an abdominal area and can be drained from there via an outlet valve or flushed out with water flowing in via the main valve.
  • the invention has for its object to provide a hydrant with backflow preventer, so accidental or malicious introduction of media, as waste water or health-endangering substances, is excluded by hydrants in the water network with certainty.
  • the original functions of the hydrant must not be affected.
  • it is important to increase the reliability, to keep the equipment costs low and to allow efficient retrofitting in the water network of already installed hydrants.
  • Another object is to make the backflow preventer to be created modified for different variants of upper parts, i. for an attachment for an underfloor hydrant and for differently configured extension tubes for above-ground hydrants.
  • the hydrant in the configuration as under- or above-ground hydrant for installation in a water supply network has an upper part, which is designed as an extension pipe in a above-floor hydrant, which is installed above ground towering.
  • the upper part is designed as a underfloor attachment, which is to be concealed underground together with a riser pipe.
  • the upper part has at least one outlet connection serving for the removal of water.
  • In the upper part there is a vertically arranged valve rod extension.
  • At the bottom of the upper part of a riser is connected with a vertically extending valve rod therein.
  • the valve rod is connected on the one hand with the valve rod extension and together forms a valve rod assembly.
  • the valve rod is connected to a main valve, which leads to the water supply network and is adjustable between a closed position and an open position for the removal of water.
  • non-return valve in the form of a mechanical arrangement with a seal supported by a spring, which is intended to close a sealing surface lying in the flow path to the water supply network.
  • a drain valve is provided for the automatic emptying of the hydrant shut down therein water.
  • the overhead hydrant can be designed as a single-spindle hydrant with the at least one outlet spigot and the valve rod assembly for actuating the main valve.
  • the overground hydrant is designed as a three-spindle hydrant with two outlet spigots and two side valves for each separate opening or blocking of the two existing outlet spigot and the valve rod assembly for actuating the main valve.
  • the backflow preventer is arranged in the respective outlet spigot of the upper part or in the respective side valve of the upper part.
  • the flow path for the ambient air flowing in via the ventilation valve into the hydrant bypasses the at least one return flow preventer arranged in the upper part and the at least one existing outlet connection piece.
  • the vent valve has a float formed as a closure body, which is installed in the upper end of a mounted on the valve stem extension spindle attachment and closes a ventilation opening in the atmosphere or releases.
  • the intended for installation in an outlet spigot backflow preventer has a housing whose outer wall is sealed against the inner wall of the outlet spigot.
  • an axially movable support is arranged, which is supported by the spring and provided with the seal.
  • the non-return valve further has a guide member which is fixedly disposed in the housing, adjacent to the outlet of the outlet nozzle, and in which one end of the spring is inserted, while the other end of the spring acts on the carrier.
  • the existing on the housing sealing surface is averted from the outlet and is closed by the seal in the effective position as a backflow preventer.
  • the backflow preventer which is designed for installation in the two side valves which can not be operated separately, has a housing horizontally installed in the upper part with a centrally positioned spindle feedthrough and one vertical passage on each side of the spindle feedthrough.
  • the spindle bushing serves for the vertical passage of the valve stem extension.
  • the vertical passages are provided for the respective recording of a fixed guide part with attached spring and carrier associated therewith.
  • the guide member is telescopically slidably mounted in the carrier, and the spring is clamped between a top of the respective vertical passage fixed lid and the bottom of the carrier, which is guided axially displaceably in the vertical passage. Points down the wearer puts on a seal.
  • Internally of the upper part there is a sealing surface for each of the side valves which is closed by the respective seal in the position acting as a backflow preventer.
  • the backflow preventer which is designed for installation in the two separately operable side valves, also has a housing horizontally mounted in the upper part with a centrally positioned spindle feedthrough and a vertical passage on each side of the spindle feedthrough.
  • the spindle bushing in turn serves for the vertical passage of the valve rod extension.
  • the vertical passages are now provided for each receiving a rotatable but axially fixed side valve spindle with screwed axially adjustable but radially locked counter nut, as well as below this plugged spring and associated carrier.
  • the external thread part of the side valve spindle protrudes into the vertical passage and inserted telescopically slidably in the carrier.
  • the side valve spindle is axially fixed in a lid mounted on top of the vertical passage.
  • the spring is clamped between the counter nut and an internally fixed in the carrier spring retainer.
  • the carrier is axially slidably guided in the vertical passage, and the carrier has the bottom Seal on.
  • a sealing surface is also provided for each of the side valves, which is closed by the respective seal in the effective position as a backflow preventer.
  • the conventional hydrant - here in the form of a above-ground hydrant without the equipment with a backflow preventer - has a mounted in the above state towering tower tube as the upper part 1, a connected to the upper part 1 and standing in the ground riser 6, from which an inlet pipe to the water network 9 leads.
  • the upper part 1 has a water outlet for use outlet nozzle 11 with a hose connection, and below - at the level of the earth level - the upper part 1 is surrounded by a Fundamentring 19 .
  • a valve rod extension 2 which is connected to a vertically arranged in the riser 6 valve rod 7 .
  • valve rod 7 is seated in the riser 6
  • Main valve 8 is connected, which is adjustable between a closed position and an open position due to the water removal to form the obturator to the water mains.
  • the valve rod extension 2 and the valve rod 7 together form the valve rod assembly 2,7.
  • a drain valve 60 which is provided with shut off hydrant for the automatic emptying of the dammed water in the hydrant.
  • underfloor hydrant has in principle the same components. Only the upper part 1 now has the shape of a underfloor tower with usually much lower height and differently configured outlet spigots 11. This type shell 1 is located underground in a shaft, while the riser 6 is again in the ground. It eliminates the foundation ring 19.
  • the non-return valve 3 is installed in the outlet connection 11 and is held in position by the hose connection 13 screwed into the outlet connection 11 with interposition of the connection seal 12 .
  • the backflow preventer 3 is in the closed state (s. FIGS. 2A and 2F ).
  • This non-return valve 3 first comprises a cartridge-shaped housing 36, whose outer wall is sealed against the inner wall of the outlet nozzle 11 and each of which is open to the outlet from the outlet spigot 11 and the upper part 1 towards, said lying in the direction of the upper part 1, turned away from the outlet sealing surface 360 is formed by a narrowed width.
  • an axially movable support 32 is arranged, which has a rear, directed to the hose connection 13 tubular spring receptacle 321 , which follows a plate-like sealing base 323 and vorderst an externally threaded portion 324 .
  • On the external thread portion 324 and resting on the sealing base 323 sits the seal 33, which of the counter-disc 34 and the screwed onto the male threaded portion 324 locking nut 35 is held.
  • main valve 8 After use of the hydrant and then closed main valve 8 initially remains in the hydrant jammed water, which must be emptied automatically in particular for frost protection.
  • drainage valve 60 serves as a temporary opening to the ground. According to the prior art, the ventilation of the hydrant for the automatic emptying of water could hitherto be carried out through the hose connection 13 in the outlet connection 11.
  • a vent valve 5 which has a designed as a float closure body 50 .
  • the main valve 8 When the main valve 8 is closed, the water column in the hydrant sinks, and thus the closure body 50 lowers from the ventilation opening 200 from the previously limited closing position into the limited open position.
  • the closure body 50 As a result of further Nachströmens of ambient air from the atmosphere through the now free ventilation opening 200 is done automatically complete emptying over the drain valve 60 into the soil.
  • the flow path for the required in the hydrant to its drain via the venting valve 5 inflowing ambient air is thus no longer now runs through the outlet spigot. 11
  • the spindle attachment 20 is inserted in the upper end of the valve rod extension 2, which ends in a nest space 17 .
  • the vertical freedom of movement of the closure body 50 is limited by a plugged fuse element 24 and complementary contours on the closure body 50 and in the nest space 17 .
  • An attachable to the upper part 1 protective cap 10 serves as a cover to the spindle attachment 20th
  • This sequence of figures relates to an attachment tube as the upper part 1 second variant in single-spindle design with two side valves SV left , SV right and two outlets 11 for an above-ground hydrant.
  • the outlet connection 11 are each provided with a hose connection 13 and an interposed connection seal 12 .
  • the valve rod extension 2 extends with the top mounted Spindle attachment 20, which is accessible within a patch on the upper part 1 cap base 14 , when opening the cap base 14 covering cap 10 opens.
  • the two side valves SV left , SV right are in a plate-like housing 46, which rests horizontally on the upper part 1 , installed. Below and in alignment with each of the side valves SV left , SV right is located in the upper part 1, a sealing surface 16 which is designed as a narrowed clear width.
  • a sealing surface 16 which is designed as a narrowed clear width.
  • the non-return valve 4 in the left side valve SV left is open, whereas in the right side valve SV right closed (s. FIG. 3A ). This situation does not exist in reality, but merely illustrates the possible positions of the side valves SV left, SV right .
  • the housing 46 has a centrally positioned spindle bushing 460 for vertical passage of the valve rod extension 2 and on both sides of the spindle bushing 460 each have a vertical passage 466 for receiving a respective, rod-shaped guide member 40 with attached spring 41 and thus Associated kartuschenartigem carrier 42 inserted in the bushing seat 461 and the seal seat 462 of the stem guide 460 are the scraper ring 21 and the stem seal 22, which are penetrated by the spindle attachment 20th
  • the guide member 40 is inserted telescopically displaceable in the carrier 42, namely in its axial, a cylindrical clearance forming spring receptacle 421.
  • the spring 41 is between a top of the respective vertical passage 466 fastened with the screws 428 cover 427 - under this is the scraper ring 426 inserted - and clamped down the carrier 42 , which is guided axially displaceably in the vertical passage 466 .
  • the spring 41 is in turn acting as a compression spring coil spring.
  • a counter-plate 44 is fastened by means of a connecting element 424, for example a screw. From below to the counter-disc 44 , the likewise disc-shaped sealing base 423 is attached to the screws 429 and nuts 45 . At the bottom of the combination of counter-disc 44 and seal base 423 sits the seal 43rd
  • the inside of the upper part 1 for each of the side valves SV left , SV right existing sealing surface 16 is closed by the respective seal 43 in the effective as a backflow preventer 4 position.
  • the components of the backflow preventer 4 in the respective side valve SV left , SV right are again designed and arranged so that in the effective position as backflow preventer 4 position - ie with the main valve 8 closed - the pressure of an upcoming outlet nozzle 11 irregular medium from the spring 41st reinforced to the seal 43 and the sealing surface 16 generated contact pressure.
  • FIGS. 4A to 4G are identical to FIGS. 4A to 4G.
  • This sequence of figures relates to an extension tube as upper part 1 third variant in three-spindle design with two side valves SV left , right SV and two outlet spigot 11 for a above-ground hydrant.
  • the outlet connection 11 are in turn each provided with a hose connection 13 and an interposed connection seal 12 .
  • the upper part 1 , the side valves SV left , SV right namely by operating the respective side valve spindle 25 are operated separately.
  • Internally of the upper part 1 in turn extends vertically the valve rod extension 2 with the above-arranged spindle attachment 20, which is hidden in the patch on the upper part 1 cap base 14 , but is accessible when you open the cap base 14 covering cap 10 .
  • a cover 427 with the interposition of a scraper ring 426 is fastened on top of the housing 46 with the screws 428 above each of the two vertical passages 466 .
  • a cover 427 sits with the interposition of another seal 425, a rotatable but axially fixed side valve spindle 25, on the threaded shaft 250, the axially adjustable but radially locked counter nut 26 is screwed, which is guided in the vertical passage 466 .
  • the threaded shaft 250 projecting through the vertical passage 466 extends into the carrier 42, which is displaceably arranged in the vertical passage 466 in a limited manner.
  • the compressible spring 41 is inserted on the threaded shaft 250 and is clamped between the lock nut 26 and a fixed point in the spring seat 421 of the carrier 42 .
  • FIGS. 4A and 4B are identical to FIGS. 4A and 4B.
  • the right side valve SV right is locked according to the lower position of the lock nut 26 in the closed position, so that the water pressure can cause no opening.
  • the spring 41 is compressed to the maximum downward, while the support 42 is pushed downwards in the relevant vertical passage 466 .
  • the vent valve 5 is closed as a result of standing in the valve stem extension 2 water, the closure body 50 experiences buoyancy in its closed position.
  • the hydrant is currently not under pressure because the main valve 8 either closed or the hydrant is not at the water mains 9 or currently the water mains 9 is depressurized.
  • the backflow preventer 4 in the left side valve SV left unmoved according to the upper position of the lock nut 26 , but pressed by the action of the spring 41 in the closed position.
  • the spring 41 has expanded upwards and downwards.
  • the carrier 42 has moved maximally downwardly out of the respective vertical passage 466 .
  • the situation shown results when this side valve SV is left in the open position, but no water pressure acts.
  • the vent valve 5 would be open, because by the lack of buoyancy of the closure body 50 decreases in its open position.
  • the hydrant is currently not under pressure - for example, because the main valve 8 is closed - yet due to the lower position of the lock nut 26 of the backflow preventer 4 is locked in the right side valve SV right in the closed position, so closed the associated sealing surface 16 of the attached seal 43 .
  • the spring 41 is pressed by the lock nut 26 down, has moved downwards to the maximum, while the support 42 driven out of the respective vertical passage 466 downwards. Due to the lack of buoyancy of the closure body 50 decreases , the vent valve 5 assumes open position.
  • the situation in the left side valve SV on the left is identical to the positions in the left side valve SV on the left according to FIG. 4F as it would be immediately before the use of the hydrant or immediately after its shutdown.

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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)
EP18405011.0A 2017-05-02 2018-04-27 Bouche à eau pourvue de clapet antiretour dans la partie supérieure Active EP3399112B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH00584/17A CH713755A1 (de) 2017-05-02 2017-05-02 Hydrant mit im Oberteil vorhandenem Rückflussverhinderer.

Publications (2)

Publication Number Publication Date
EP3399112A1 true EP3399112A1 (fr) 2018-11-07
EP3399112B1 EP3399112B1 (fr) 2020-10-28

Family

ID=60083719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18405011.0A Active EP3399112B1 (fr) 2017-05-02 2018-04-27 Bouche à eau pourvue de clapet antiretour dans la partie supérieure

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EP (1) EP3399112B1 (fr)
CH (1) CH713755A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112982573A (zh) * 2021-03-09 2021-06-18 列斯丽(深圳)技术有限公司 自排水式消火栓结构及包含它的消防井

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939113A1 (de) * 1998-08-26 2000-03-02 Von Roll Holding Ag Gerlafinge Nebenabsperrorgan für Hydranten
EP1010821A1 (fr) * 1998-12-19 2000-06-21 Heinz-Jürgen Pfitzner Clapet anti-retour pour bouche d'incendie
US20040154659A1 (en) * 2003-02-06 2004-08-12 Lafalce Anthony P. Backflow prevention system
US7428910B2 (en) * 2002-12-04 2008-09-30 Davidson Hydrant Technologies, Inc. Breathable fire hydrant rod
US20090320933A1 (en) * 2008-06-27 2009-12-31 Davidson Sr Tom Randy Weeping System for Fire Hydrant Having a Protective Valve or Device
DE202012001007U1 (de) * 2012-02-01 2012-06-11 Awg Fittings Gmbh Standrohr mit Rückflussverhinderer und Belüftungsventil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939113A1 (de) * 1998-08-26 2000-03-02 Von Roll Holding Ag Gerlafinge Nebenabsperrorgan für Hydranten
EP1010821A1 (fr) * 1998-12-19 2000-06-21 Heinz-Jürgen Pfitzner Clapet anti-retour pour bouche d'incendie
US7428910B2 (en) * 2002-12-04 2008-09-30 Davidson Hydrant Technologies, Inc. Breathable fire hydrant rod
US20040154659A1 (en) * 2003-02-06 2004-08-12 Lafalce Anthony P. Backflow prevention system
US20090320933A1 (en) * 2008-06-27 2009-12-31 Davidson Sr Tom Randy Weeping System for Fire Hydrant Having a Protective Valve or Device
DE202012001007U1 (de) * 2012-02-01 2012-06-11 Awg Fittings Gmbh Standrohr mit Rückflussverhinderer und Belüftungsventil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112982573A (zh) * 2021-03-09 2021-06-18 列斯丽(深圳)技术有限公司 自排水式消火栓结构及包含它的消防井
CN112982573B (zh) * 2021-03-09 2024-05-24 列斯丽(深圳)技术有限公司 自排水式消火栓结构及包含它的消防井

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Publication number Publication date
EP3399112B1 (fr) 2020-10-28
CH713755A1 (de) 2018-11-15

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