EP3100770A1 - Mixing device for a fire extinguishing apparatus - Google Patents

Mixing device for a fire extinguishing apparatus Download PDF

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Publication number
EP3100770A1
EP3100770A1 EP16171739.2A EP16171739A EP3100770A1 EP 3100770 A1 EP3100770 A1 EP 3100770A1 EP 16171739 A EP16171739 A EP 16171739A EP 3100770 A1 EP3100770 A1 EP 3100770A1
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EP
European Patent Office
Prior art keywords
metering
sleeve
additive
main channel
zumischer
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
EP16171739.2A
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German (de)
French (fr)
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EP3100770B1 (en
Inventor
Wilfried Unrath
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.)
AWG Fittings GmbH
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AWG Fittings GmbH
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Publication date
Application filed by AWG Fittings GmbH filed Critical AWG Fittings GmbH
Priority to SI201630029T priority Critical patent/SI3100770T1/en
Priority to PL16171739T priority patent/PL3100770T3/en
Publication of EP3100770A1 publication Critical patent/EP3100770A1/en
Application granted granted Critical
Publication of EP3100770B1 publication Critical patent/EP3100770B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/002—Apparatus for mixing extinguishants with water
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam

Definitions

  • the present invention relates to an admixer for a fire extinguishing device for admixing an additive, in particular foaming agent, in the extinguishing water stream, in detail according to the preamble of claim 1.
  • Generic admixers are used in particular to introduce liquid extinguishing agent additives in an adjustable mixing ratio in a quench water stream.
  • such an admixer is coupled in a hose between the fire pump and a foam tube.
  • the foam pipe at the end of the hose line produces an extinguishing foam from the water-extinguishing agent mixture for covering flammable liquids or generally for suffocation of flames.
  • the printed prior art is based on the published patent application DE 10 2006 026 197 A1 in which a generic admixer with a water inlet, a foam agent inlet and an extinguishing agent outlet is disclosed, which has a control piston for an adapted to the amount of extinguishing water admixture of the foaming agent.
  • a metering valve introduced perpendicularly to the main channel has a rotary control which can be rotated in a metering housing in order to change the metered amount of the foam agent.
  • DE 39 23 891 C2 describes a further admixer with an opening perpendicular to the main channel additive channel for admixing a foam or Wetting agent, wherein a metering valve can be connected to the inlet bore of the additive channel.
  • the present invention is therefore an object of the invention to provide a Zumischer for a fire extinguishing device for admixing an additive, such as foaming agent or wetting agent in the extinguishing water flow, wherein the admixer is improved in terms of robustness and the adjustment of the dosing and avoids unintentional adjustment or inaccurate dosing becomes.
  • An admixer according to the invention for a fire extinguishing device for admixing an additive in the extinguishing water flow has a base body which forms a main channel for the extinguishing water and admixture for the mixture of extinguishing water and additive and which extends at least partially along a longitudinal axis and a water inlet end and an extinguishing agent outlet end having.
  • the water intake end and the Extinguishing agent outlet are connected to each other via the main channel flow-conducting.
  • the main channel extends from the water inlet end to the extinguishing agent outlet end along the linear longitudinal axis and the water inlet end in particular aligns with the extinguishing agent outlet end.
  • the base body is at least substantially cylindrical, in particular formed from a cylinder sleeve.
  • an additive channel which extends from an additive inlet and opens into the main channel.
  • the additive medium channel is arranged perpendicular to the main channel.
  • the additive medium channel has a significantly smaller flow cross section than the main channel.
  • the adjustment of the metering of the additive flowing from the additive channel into the main channel additive into the interface between the additive channel and the main channel is integrated by a the main channel is provided directly or indirectly surrounding the main channel in the main channel over its outer circumference dosing sleeve in the region of the mouth of the additive channel , which has a plurality of circumferentially spaced-apart metering holes with mutually different sized cross-sectional areas or at least one extending over the circumference metering opening whose width in the direction of the main channel is running increasingly tapered over the circumference, so that, as below is explained, individual peripheral portions of this metering with different widths can be used to control or adjustment of the additive flow.
  • the metering sleeve is associated with the metering sleeve in the circumferential direction radially inside or outside encompassing diaphragm body, wherein the Dosing sleeve and / or the visor body in the circumferential direction is rotatable / and the visor body has an aperture which can be brought by rotating the visor body and / or the metering sleeve in the circumferential direction in alignment with one of the metering holes or a peripheral portion of the metering thereby reducing or increasing in its cross-sectional area through the aperture opening and the metering bore or the aperture opening and the peripheral portion of the metering through a common cross-section through the diaphragm body and the metering sleeve.
  • the additive channel opens out via the aperture and aligned with this metering or through the aperture and aligned with the aperture opening circumferentially of the metering in the main channel.
  • the visor body is designed as a closed over the circumference, the main channel at least indirectly enclosing diaphragm sleeve.
  • a closed diaphragm sleeve is formed in particular by the main body itself.
  • the metering sleeve is slidably mounted within the base body on a radially inwardly directed peripheral surface of the base body and in particular sealed against this.
  • a radially outside on the base body rotatable about the circumference adjusting ring can be positioned, which is mounted in particular on a radially outwardly directed peripheral surface of the body slidably, wherein the adjusting positively and / or non-positively connected to the dosing sleeve for common rotation with this is, in particular torsionally rigid connected to this.
  • a torsionally rigid connection can be provided by an elongated hole extending over the circumference of the main body between the adjusting ring and the metering sleeve.
  • Such Connection can be made for example by a pin, in particular threaded pin, or a screw or the like. If such a pen or the like is visually or haptically recognizable from the outside, this can additionally be used as an indicator of the current setting or a common setting, for example with a dosage of three percent. In such a percentage indication of the dosage, the percentage of the amount or the volume of the additive based on the amount or the volume of the extinguishing water is given.
  • a locking device is provided, via which the relative position in the circumferential direction between the diaphragm body and the dosing sleeve in individual over the circumference at a distance from each other positioned locking positions can be fixed.
  • a locking device can be formed for example by one or more locking pins between the adjusting ring and the main body.
  • the metering or the metering is provided in a conical axial portion of the metering, wherein the conical axial section tapers in particular in the flow direction of the fire water through the main channel, therefore in the direction of the flow of extinguishing water from the water inlet end to the Lƶschschitzausementsde.
  • the cone of the dosing sleeve is pressed sealingly against the base body by the flow pressure of the extinguishing water in the main channel, so that when individual dosing bores are provided, they are sealed against one another or the circumference of the dosing opening is sealed.
  • a biasing force is applied to the dosing sleeve, which acts either in the direction of flow pressure to reinforce the seal, or in another embodiment, against the flow pressure around the friction between the dosing and the body to reduce.
  • a sliding surface between the base body and the metering sleeve may be provided with Teflon, in particular having a Teflon coating.
  • the additive channel can open into a main channel throat to form a venturi.
  • the Venturi nozzle is formed in particular by the metering sleeve, for example, the flow cross section of the main channel tapers directly within the metering sleeve accordingly.
  • the dosing sleeve can be supported against the base body with a biasing force in the direction of the longitudinal axis, for example in the flow direction of the extinguishing water from the water inlet end to the extinguishing agent outlet end.
  • a support ring screwed into the base body is provided for this purpose in the region of the water inlet end, which exerts the pretensioning force in an adjustable manner against the dosing sleeve, in particular via an O-ring or another seal.
  • the biasing ring may have recesses or projections for applying a tool, for example, distributed over the circumference arranged recesses into which corresponding pins of the tool can engage.
  • a check valve is provided in the additive channel, which opens in the direction of flow of the additive, that is in the direction of the main channel, and accordingly closes in the opposite direction.
  • a support stand in particular with a floor standing surface or a wall connection surface, and the base body is mounted at least partially rotatable in the circumferential direction over its longitudinal axis in the support stand.
  • the base body is mounted at least partially rotatable in the circumferential direction over its longitudinal axis in the support stand.
  • the base body can adapt to hose movements.
  • O-rings in particular Teflon O-rings serve
  • an axial securing can serve in particular by at least one engaging in a circumferential groove in the base pin, such as threaded pin of the Tag Parters. If such a pin is firmly screwed, however, a fixation of the body is achieved against rotation in the support stand.
  • the admixture according to the invention is characterized by robustness, a compact design, a cost-effective production and by the possible setting of many different Zumischraten, for example from 0 - 0.1 - 0.2 - 0.5 -1 - 2 - 3 - 4 -. 5 - 6% off.
  • individual rates can be omitted or other rates added.
  • a Zumischers invention comprising a main body 1, which has a main channel 2, which extends from a water inlet end 3 to a extinguishing agent outlet end 4.
  • a main channel 2 which extends from a water inlet end 3 to a extinguishing agent outlet end 4.
  • Storz couplings are provided for connecting a fire hose or other fire department.
  • the additive inlet 6 has, for example, a Storz coupling.
  • a check valve 7 is provided in the additive channel 5.
  • the main body 1 is rotatably mounted in a support stand 8.
  • the shown Support stand 8 has a support ring 9 which surrounds the base body 1.
  • a slide bearing is formed by two O-rings 10 between the support ring 9 and the outer surface of the main body 1.
  • the main body 1 is secured in the support ring 9 by a screwed into a circumferential groove in the base body 1 locking pin 11 of the support ring 9 against axial displacement.
  • the additive channel 5 opens via a metering sleeve 13 in the main channel 2.
  • the metering sleeve 13 is rotatably mounted in the illustrated embodiment in the base body 1, which at the same time forms a diaphragm body 14 for the metering sleeve 13 or for individual metering holes 15 in the metering sleeve 13.
  • the metering holes 15 are arranged one behind the other in the circumferential direction of the metering sleeve 13, in the present case on a conical axial section 16 of the metering sleeve 13.
  • the metering holes 15 can be brought by rotation of the metering sleeve 13 either in an aligned alignment with the aperture 17 of the visor body 14, here the base body 1. Depending on which of the metering holes 15 is aligned with the aperture 17, a more or less large flow cross-section for the additive is provided, via which the additive channel 5 opens into the main channel 2.
  • the rotation of the dosing sleeve 13 takes place by means of the adjusting ring 18 which is rotatably mounted radially on the base body 1 outside.
  • the adjusting ring 18 is connected via a threaded pin 19 which is screwed through a hole in the adjusting ring 18 and a slot 20 in the base body 1 in the dosing sleeve 13, positively connected to the dosing sleeve 13.
  • the threaded hole in the dosing sleeve 13 is in the FIG. 3 denoted by 21.
  • the protruding in the embodiment shown in the radial direction from the adjusting ring 18 threaded pin 19 also serves as an indicator of the relative position of the adjusting ring 18 on the base body 1 and thus the dosing sleeve 13 within the body.
  • the adjusting ring 18 is elastically supported in the radial direction locking pins 22 which engage in corresponding detent openings 23 on the outer circumference of the base body 1, for selecting predetermined relative positions between the base body 1 and the adjusting ring 18 relative to the base body 1, so that an indexing is achieved.
  • base body 1 recesses or circumferential grooves serve to save weight.
  • Another grub screw 24 is used in the illustrated embodiment as a pointer for a scale on the adjusting ring 18th
  • the additive channel 5 is advantageously formed by a pipe section 25, which is designed in one piece with the base body 1 or screwed into this or otherwise secured to this form-fitting or cohesively.
  • the additive channel 5 opens via the aperture 17 and the corresponding metering 15 in a Hauptkanalengstelle 26 in the main channel 2, so that a Venturi nozzle is formed, via which the additive is automatically sucked into the main channel 2 and thus the extinguishing water.
  • the main channel throat 26 is formed in particular directly by the main channel 2 immediately enclosing dosing sleeve 13.
  • a support ring 27 is screwed into the main channel 2, which has a supporting force in addition to the flow force of the Lƶschwassers on the dosing sleeve 13 exerts to press the conical axial portion 16 against a similar surface in the base body 1 and thereby seal the metering holes 15 against each other, so that no additive can flow over the outer periphery of the metering 13 to a further metering 15 and exclusively through the in alignment with the aperture 17 aligned metering bore 15 flows.
  • FIG. 7 is again the possible design of the support post 8 with the support ring 9 and the support 12 is shown. However, other designs could be chosen.
  • FIG. 8 an alternative embodiment of a metering sleeve 13 is shown, which instead of the previously shown individual metering holes 15 has a circumferentially extending metering opening 28 which cooperates here with a radially positioned within the metering sleeve 13 aperture 17 to the flow cross section for the additive more or less limit, depending on the rotational position of the metering sleeve 13 relative to the diaphragm opening 17 having diaphragm body 14.
  • the metering sleeve 13 is mounted radially outwardly rotatable on the visor body 14, which is not mandatory.
  • the free flow cross section for the additive is reduced by rotation of the metering sleeve 13 in a first direction and increased by rotating the metering sleeve 13 in the opposite circumferential direction.
  • the base body 1 and the metering sleeve 13 extend concentrically to the linear longitudinal axis 29 and embodiments could be provided with a curved or angled main channel 2.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
  • Measuring Volume Flow (AREA)
  • Accessories For Mixers (AREA)

Abstract

Die Erfindung betrifft einen Zumischer fĆ¼r eine Feuerlƶschvorrichtung zum Zumischen eines Zusatzmittels in einem Lƶschwasserstrom; - mit einem einen Hauptkanal; - mit einem Zusatzmittelkanal. Der erfindungsgemƤƟe Zumischer ist dadurch gekennzeichnet, dass - im Bereich der MĆ¼ndung des Zusatzmittelkanals im Hauptkanal eine DosierhĆ¼lse vorgesehen ist, die eine Vielzahl von Ć¼ber dem Umfang mit Abstand zueinander angeordnete Dosierbohrungen oder wenigstens eine sich Ć¼ber dem Umfang erstreckende Dosierƶffnung aufweist, wobei - der DosierhĆ¼lse ein die DosierhĆ¼lse (13) in der Umfangsrichtung radial innen oder auƟen umgreifender Blendenkƶrper (14) zugeordnet ist, wobei der Zusatzmittelkanal Ć¼ber eine der Dosierbohrungen oder die Dosierƶffnung und eine zugeordnete Blendenƶffnung im Hauptkanal mĆ¼ndet.The invention relates to an admixer for a fire extinguishing device for admixing an additive in a quenching water stream; - with a main channel; - with an additive channel. The admixer according to the invention is characterized in that - In the region of the mouth of the additive channel in the main channel a metering sleeve is provided which has a plurality of circumferentially spaced-apart metering holes or at least one extending over the circumference metering, wherein - The metering sleeve is associated with the metering sleeve (13) in the circumferential direction radially inside or outside enclosing diaphragm body (14), wherein the additive medium channel via one of the metering or the metering and an associated aperture in the main channel opens.

Description

Die vorliegende Erfindung betrifft einen Zumischer fĆ¼r eine Feuerlƶschvorrichtung zum Zumischen eines Zusatzmittels, insbesondere Schaummittels, in den Lƶschwasserstrom, im Einzelnen gemƤƟ dem Oberbegriff von Anspruch 1.The present invention relates to an admixer for a fire extinguishing device for admixing an additive, in particular foaming agent, in the extinguishing water stream, in detail according to the preamble of claim 1.

GattungsgemƤƟe Zumischer werden verwendet, um insbesondere flĆ¼ssige LƶschmittelzusƤtze in einem einstellbaren MischungsverhƤltnis in einen Lƶschwasserstrom einzubringen. In der Regel wird ein solcher Zumischer in einer Schlauchleitung zwischen der Feuerlƶschpumpe und einem Schaumrohr eingekoppelt. Das Schaumrohr am Ende der Schlauchleitung produziert aus dem Wasser-Lƶschmittel-Gemisch einen Lƶschschaum zum Abdecken von brennbaren FlĆ¼ssigkeiten oder allgemein zum Ersticken von Flammen.Generic admixers are used in particular to introduce liquid extinguishing agent additives in an adjustable mixing ratio in a quench water stream. In general, such an admixer is coupled in a hose between the fire pump and a foam tube. The foam pipe at the end of the hose line produces an extinguishing foam from the water-extinguishing agent mixture for covering flammable liquids or generally for suffocation of flames.

Zum druckschriftlichen Stand der Technik wird auf die Offenlegungsschrift DE 10 2006 026 197 A1 verwiesen, in welcher ein gattungsgemƤƟer Zumischer mit einem Wassereinlass, einem Schaummitteleinlass und einem Lƶschmittelauslass offenbart wird, der einen Steuerkolben fĆ¼r eine an die Lƶschwassermenge angepasste Zumischung des Schaummittels aufweist. Ein senkrecht zum Hauptkanal eingebrachtes Dosierventil weist einen Drehregler auf, der in einem DosiergehƤuse gedreht werden kann, um die zudosierte Menge des Schaummittels zu verƤndern.The printed prior art is based on the published patent application DE 10 2006 026 197 A1 in which a generic admixer with a water inlet, a foam agent inlet and an extinguishing agent outlet is disclosed, which has a control piston for an adapted to the amount of extinguishing water admixture of the foaming agent. A metering valve introduced perpendicularly to the main channel has a rotary control which can be rotated in a metering housing in order to change the metered amount of the foam agent.

DE 20 2004 009 297 U1 offenbart einen weiteren Zumischer mit einem Dosierventil, das einen Drehregler aufweist, um dadurch den Strƶmungsquerschnitt fĆ¼r in den Hauptkanal einstrƶmendes Schaummittel zu verƤndern. DE 20 2004 009 297 U1 discloses a further admixer with a metering valve having a knob to thereby change the flow area for foaming agent flowing into the main channel.

DE 39 23 891 C2 beschreibt einen weiteren Zumischer mit einem senkrecht im Hauptkanal mĆ¼ndenden Zusatzmittelkanal zum Zumischen eines Schaum- oder Netzmittels, wobei an der Zulaufbohrung des Zusatzmittelkanals ein Dosierventil angeschlossen werden kann. DE 39 23 891 C2 describes a further admixer with an opening perpendicular to the main channel additive channel for admixing a foam or Wetting agent, wherein a metering valve can be connected to the inlet bore of the additive channel.

Zum weiteren Stand der Technik wird verwiesen auf DE 41 15 101 A1 , FR 2 856 603 A1 und US 2014/0 084 076 A1 .Reference is made to the further prior art DE 41 15 101 A1 . FR 2 856 603 A1 and US 2014/0 084 076 A1 ,

Nachteilig bei den bekannten Zumischern ist, dass die Dosierung am seitlichen Einstellrad zwar bei grĆ¶ĆŸeren Dosierraten, insbesondere von mehr als einem Prozent, ausreichend genau eingestellt werden kann, jedoch bei kleineren Dosierraten die Einstellung ungenau und schlecht reproduzierbar ist. DarĆ¼ber hinaus sind die seitlich montierten EinstellrƤder im rauen Umgang beim Feuerlƶscheinsatz nachteilig, weil sie aufgrund deren exponierter Position beschƤdigt oder unbeabsichtigt verstellt werden kƶnnen.A disadvantage of the known Zumischern that the dosage on the side dial although at higher metering, in particular more than one percent, can be set sufficiently accurate, but at lower metering rates, the setting is inaccurate and poorly reproducible. In addition, the laterally mounted dials in harsh handling at Feuerlƶscheinsatz are disadvantageous because they can be damaged due to their exposed position or inadvertently adjusted.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen Zumischer fĆ¼r eine Feuerlƶschvorrichtung zum Zumischen eines Zusatzmittels, beispielsweise Schaummittels oder Netzmittels in den Lƶschwasserstrom anzugeben, wobei der Zumischer hinsichtlich der Robustheit und der Einstellung der Dosierrate verbessert ist und eine unbeabsichtigte Verstellung beziehungsweise eine ungenaue Dosierung vermieden wird.The present invention is therefore an object of the invention to provide a Zumischer for a fire extinguishing device for admixing an additive, such as foaming agent or wetting agent in the extinguishing water flow, wherein the admixer is improved in terms of robustness and the adjustment of the dosing and avoids unintentional adjustment or inaccurate dosing becomes.

Die erfindungsgemƤƟe Aufgabe wird durch einen Zumischer mit den Merkmalen von Anspruch 1 gelƶst. In den abhƤngigen AnsprĆ¼chen sind vorteilhafte und besonders zweckmƤƟige Ausgestaltungen der Erfindung angegeben.The object of the invention is achieved by a Zumischer with the features of claim 1. In the dependent claims advantageous and particularly expedient embodiments of the invention are given.

Ein erfindungsgemƤƟer Zumischer fĆ¼r eine Feuerlƶschvorrichtung zum Zumischen eines Zusatzmittels in den Lƶschwasserstrom weist einen Grundkƶrper auf, der einen Hauptkanal fĆ¼r das Lƶschwasser und nach Zumischung fĆ¼r die Mischung aus Lƶschwasser und Zusatzmittel ausbildet und der sich zumindest teilweise entlang einer LƤngsachse erstreckt und ein Wassereinlassende sowie ein Lƶschmittelauslassende aufweist. Das Wassereinlassende und das Lƶschmittelauslassende sind Ć¼ber den Hauptkanal strƶmungsleitend miteinander verbunden. GemƤƟ einer besonderen AusfĆ¼hrungsform der Erfindung erstreckt sich der Hauptkanal vom Wassereinlassende bis zum Lƶschmittelauslassende entlang der linearen LƤngsachse und das Wassereinlassende fluchtet insbesondere mit dem Lƶschmittelauslassende.An admixer according to the invention for a fire extinguishing device for admixing an additive in the extinguishing water flow has a base body which forms a main channel for the extinguishing water and admixture for the mixture of extinguishing water and additive and which extends at least partially along a longitudinal axis and a water inlet end and an extinguishing agent outlet end having. The water intake end and the Extinguishing agent outlet are connected to each other via the main channel flow-conducting. According to a particular embodiment of the invention, the main channel extends from the water inlet end to the extinguishing agent outlet end along the linear longitudinal axis and the water inlet end in particular aligns with the extinguishing agent outlet end.

Beispielsweise ist der Grundkƶrper zumindest im Wesentlichen zylindrisch ausgefĆ¼hrt, insbesondere aus einer ZylinderhĆ¼lse gebildet.For example, the base body is at least substantially cylindrical, in particular formed from a cylinder sleeve.

ErfindungsgemƤƟ ist ein Zusatzmittelkanal vorgesehen, der sich von einem Zusatzmitteleinlass aus erstreckt und im Hauptkanal mĆ¼ndet. Beispielsweise ist der Zusatzmittelkanal senkrecht zum Hauptkanal angeordnet. In der Regel weist der Zusatzmittelkanal einen deutlich kleineren Strƶmungsquerschnitt als der Hauptkanal auf.According to the invention, an additive channel is provided which extends from an additive inlet and opens into the main channel. For example, the additive medium channel is arranged perpendicular to the main channel. As a rule, the additive medium channel has a significantly smaller flow cross section than the main channel.

ErfindungsgemƤƟ ist nun die Einstellung der Dosierung des aus dem Zusatzmittelkanal in den Hauptkanal strƶmenden Zusatzmittels in die Schnittstelle zwischen dem Zusatzmittelkanal und dem Hauptkanal integriert, indem im Bereich der MĆ¼ndung des Zusatzmittelkanals im Hauptkanal eine den Hauptkanal Ć¼ber seinem ƤuƟeren Umfang unmittelbar oder mittelbar umschlieƟende DosierhĆ¼lse vorgesehen ist, die eine Vielzahl von Ć¼ber dem Umfang mit Abstand zueinander angeordnete Dosierbohrungen mit zueinander verschieden groƟen QuerschnittsflƤchen aufweist oder wenigstens eine sich Ć¼ber dem Umfang erstreckende Dosierƶffnung aufweist, deren in Richtung des Hauptkanals gelegene Breite Ć¼ber dem Umfang zunehmend verjĆ¼ngt ausgefĆ¼hrt ist, sodass, wie nachfolgend noch erlƤutert wird, einzelne Umfangsabschnitte dieser Dosierƶffnung mit verschiedenen Breiten zur Regelung beziehungsweise Einstellung des Zusatzmittelstromes verwendet werden kƶnnen.According to the invention, the adjustment of the metering of the additive flowing from the additive channel into the main channel additive into the interface between the additive channel and the main channel is integrated by a the main channel is provided directly or indirectly surrounding the main channel in the main channel over its outer circumference dosing sleeve in the region of the mouth of the additive channel , which has a plurality of circumferentially spaced-apart metering holes with mutually different sized cross-sectional areas or at least one extending over the circumference metering opening whose width in the direction of the main channel is running increasingly tapered over the circumference, so that, as below is explained, individual peripheral portions of this metering with different widths can be used to control or adjustment of the additive flow.

ErfindungsgemƤƟ ist der DosierhĆ¼lse ein die DosierhĆ¼lse in der Umfangsrichtung radial innen oder auƟen umgreifender Blendenkƶrper zugeordnet, wobei die DosierhĆ¼lse und/oder der Blendenkƶrper in der Umfangsrichtung verdrehbar ist/sind und der Blendenkƶrper eine Blendenƶffnung aufweist, die durch Drehen des Blendenkƶrpers und/oder der DosierhĆ¼lse in der Umfangsrichtung in eine fluchtende Ausrichtung mit einer der Dosierbohrungen oder einem Umfangsabschnitt der Dosierƶffnung bringbar ist, um dadurch einen durch den Blendenkƶrper und die DosierhĆ¼lse gemeinsam begrenzten Strƶmungsquerschnitt durch die Blendenƶffnung und die Dosierbohrung hindurch oder die Blendenƶffnung und den Umfangsabschnitt der Dosierƶffnung hindurch in seiner QuerschnittsflƤche zu verkleinern oder zu vergrĆ¶ĆŸern.According to the invention, the metering sleeve is associated with the metering sleeve in the circumferential direction radially inside or outside encompassing diaphragm body, wherein the Dosing sleeve and / or the visor body in the circumferential direction is rotatable / and the visor body has an aperture which can be brought by rotating the visor body and / or the metering sleeve in the circumferential direction in alignment with one of the metering holes or a peripheral portion of the metering thereby reducing or increasing in its cross-sectional area through the aperture opening and the metering bore or the aperture opening and the peripheral portion of the metering through a common cross-section through the diaphragm body and the metering sleeve.

Der Zusatzmittelkanal mĆ¼ndet Ć¼ber die Blendenƶffnung und die mit dieser fluchtend ausgerichteten Dosierbohrung oder Ć¼ber die Blendenƶffnung und den mit der Blendenƶffnung fluchtend ausgerichteten Umfangsabschnitt der Dosierƶffnung in dem Hauptkanal.The additive channel opens out via the aperture and aligned with this metering or through the aperture and aligned with the aperture opening circumferentially of the metering in the main channel.

GemƤƟ einer AusfĆ¼hrungsform der Erfindung ist der Blendenkƶrper als Ć¼ber dem Umfang geschlossene, den Hauptkanal zumindest mittelbar umschlieƟende BlendenhĆ¼lse ausgefĆ¼hrt. Eine solche geschlossene BlendenhĆ¼lse wird insbesondere durch den Grundkƶrper selbst gebildet.According to one embodiment of the invention, the visor body is designed as a closed over the circumference, the main channel at least indirectly enclosing diaphragm sleeve. Such a closed diaphragm sleeve is formed in particular by the main body itself.

Beispielsweise ist die DosierhĆ¼lse innerhalb des Grundkƶrpers auf einer radial nach innen gerichteten UmfangsflƤche des Grundkƶrpers gleitend und insbesondere gegen diese abgedichtet drehbar gelagert. Insbesondere dann kann ferner ein radial auƟen auf dem Grundkƶrper Ć¼ber dem Umfang verdrehbarer Einstellring positioniert sein, der insbesondere auf einer radial nach auƟen gerichteten UmfangsflƤche des Grundkƶrpers gleitend gelagert ist, wobei der Einstellring formschlĆ¼ssig und/oder kraftschlĆ¼ssig mit der DosierhĆ¼lse zur gemeinsamen Verdrehung mit dieser verbunden ist, insbesondere drehstarr an dieser angeschlossen ist. Beispielsweise kann eine drehstarre Verbindung durch ein sich Ć¼ber den Umfang des Grundkƶrpers erstreckendes Langloch hindurch zwischen dem Einstellring und der DosierhĆ¼lse vorgesehen sein. Eine solche Verbindung kann beispielsweise durch einen Stift, insbesondere Gewindestift, oder eine Schraube oder dergleichen hergestellt werden. Wenn ein solcher Stift oder dergleichen von auƟen optisch oder haptisch erkennbar ist, kann dieser zusƤtzlich als Indikator der aktuellen Einstellung oder einer gƤngigen Einstellung, beispielsweise mit einer Dosierung von drei Prozent, verwendet werden. Bei einer solchen prozentualen Angabe der Dosierung wird der Prozentanteil der Menge oder des Volumens des Zusatzmittels bezogen auf die Menge oder das Volumen des Lƶschwassers angegeben.For example, the metering sleeve is slidably mounted within the base body on a radially inwardly directed peripheral surface of the base body and in particular sealed against this. In particular, then a radially outside on the base body rotatable about the circumference adjusting ring can be positioned, which is mounted in particular on a radially outwardly directed peripheral surface of the body slidably, wherein the adjusting positively and / or non-positively connected to the dosing sleeve for common rotation with this is, in particular torsionally rigid connected to this. For example, a torsionally rigid connection can be provided by an elongated hole extending over the circumference of the main body between the adjusting ring and the metering sleeve. Such Connection can be made for example by a pin, in particular threaded pin, or a screw or the like. If such a pen or the like is visually or haptically recognizable from the outside, this can additionally be used as an indicator of the current setting or a common setting, for example with a dosage of three percent. In such a percentage indication of the dosage, the percentage of the amount or the volume of the additive based on the amount or the volume of the extinguishing water is given.

Besonders gĆ¼nstig ist, wenn eine Rasteinrichtung vorgesehen ist, Ć¼ber welche die Relativposition in Umfangsrichtung zwischen dem Blendenkƶrper und der DosierhĆ¼lse in einzelnen Ć¼ber dem Umfang mit Abstand zueinander positionierten Rastpositionen festlegbar ist. Eine solche Rasteinrichtung kann beispielsweise durch einen oder mehrere Raststifte zwischen dem Einstellring und dem Grundkƶrper ausgebildet werden.It is particularly advantageous if a locking device is provided, via which the relative position in the circumferential direction between the diaphragm body and the dosing sleeve in individual over the circumference at a distance from each other positioned locking positions can be fixed. Such a locking device can be formed for example by one or more locking pins between the adjusting ring and the main body.

GemƤƟ einer vorteilhaften Ausgestaltung der Erfindung sind die Dosierbohrungen oder ist die Dosierƶffnung in einem konischen axialen Abschnitt der DosierhĆ¼lse vorgesehen, wobei sich der konische axiale Abschnitt insbesondere in Strƶmungsrichtung des Lƶschwassers durch den Hauptkanal verjĆ¼ngt, demnach in Richtung der Strƶmung des Lƶschwassers von dem Wassereinlassende zu dem Lƶschmittelauslassende. Bei einem solchen konischen axialen Abschnitt wird der Konus der DosierhĆ¼lse vom Strƶmungsdruck des Lƶschwassers im Hauptkanal dichtend gegen den Grundkƶrper gedrĆ¼ckt, sodass bei Vorsehen einzelner Dosierbohrungen diese gegeneinander abgedichtet werden beziehungsweise der Umfang der Dosierƶffnung abgedichtet wird. ZusƤtzlich kann, wie nachfolgend noch beschrieben wird, auch eine Vorspannkraft auf die DosierhĆ¼lse aufgebracht werden, die entweder in Richtung des Strƶmungsdruckes wirkt, um die Abdichtung zu verstƤrken, oder bei einem anderen AusfĆ¼hrungsbeispiel auch entgegen dem Strƶmungsdruck um die Reibung zwischen der DosierhĆ¼lse und dem Grundkƶrper zu verringern.According to an advantageous embodiment of the invention, the metering or the metering is provided in a conical axial portion of the metering, wherein the conical axial section tapers in particular in the flow direction of the fire water through the main channel, therefore in the direction of the flow of extinguishing water from the water inlet end to the Lƶschmittelauslassende. In such a conical axial section, the cone of the dosing sleeve is pressed sealingly against the base body by the flow pressure of the extinguishing water in the main channel, so that when individual dosing bores are provided, they are sealed against one another or the circumference of the dosing opening is sealed. In addition, as will be described below, a biasing force is applied to the dosing sleeve, which acts either in the direction of flow pressure to reinforce the seal, or in another embodiment, against the flow pressure around the friction between the dosing and the body to reduce.

Besonders bei dieser AusfĆ¼hrungsform, jedoch auch bei anderen AusfĆ¼hrungsformen, kann eine GleitflƤche zwischen dem Grundkƶrper und der DosierhĆ¼lse mit Teflon versehen sein, insbesondere eine Teflonbeschichtung aufweisen.Particularly in this embodiment, but also in other embodiments, a sliding surface between the base body and the metering sleeve may be provided with Teflon, in particular having a Teflon coating.

Um eine Selbstansaugung des Zusatzmittels zu erreichen, kann der Zusatzmittelkanal in einer Hauptkanalengstelle zur Ausbildung einer VenturidĆ¼se mĆ¼nden. Die VenturidĆ¼se wird insbesondere durch die DosierhĆ¼lse gebildet, beispielsweise verjĆ¼ngt sich der Strƶmungsquerschnitt des Hauptkanals unmittelbar innerhalb der DosierhĆ¼lse entsprechend.In order to achieve a self-priming of the additive, the additive channel can open into a main channel throat to form a venturi. The Venturi nozzle is formed in particular by the metering sleeve, for example, the flow cross section of the main channel tapers directly within the metering sleeve accordingly.

Insbesondere bei der AusfĆ¼hrungsform mit konischem axialen Abschnitt der DosierhĆ¼lse, jedoch auch bei anderen AusfĆ¼hrungsformen, kann die DosierhĆ¼lse in Richtung der LƤngsachse, beispielsweise in Strƶmungsrichtung des Lƶschwassers vom Wassereinlassende zum Lƶschmittelauslassende, gegen den Grundkƶrper mit einer Vorspannkraft abgestĆ¼tzt sein. Beispielsweise ist hierfĆ¼r im Bereich des Wassereinlassendes ein in den Grundkƶrper eingeschraubter AbstĆ¼tzring vorgesehen, der die Vorspannkraft einstellbar gegen die DosierhĆ¼lse ausĆ¼bt, insbesondere Ć¼ber einen O-Ring oder eine andere Dichtung. Der Vorspannring kann Aussparungen oder VorsprĆ¼nge zum Ansetzen eines Werkzeugs aufweisen, beispielsweise Ć¼ber dem Umfang verteilt angeordnete Aussparungen, in welche entsprechende Zapfen des Werkzeugs eingreifen kƶnnen.Particularly in the embodiment with a conical axial section of the dosing sleeve, but also in other embodiments, the dosing sleeve can be supported against the base body with a biasing force in the direction of the longitudinal axis, for example in the flow direction of the extinguishing water from the water inlet end to the extinguishing agent outlet end. For example, a support ring screwed into the base body is provided for this purpose in the region of the water inlet end, which exerts the pretensioning force in an adjustable manner against the dosing sleeve, in particular via an O-ring or another seal. The biasing ring may have recesses or projections for applying a tool, for example, distributed over the circumference arranged recesses into which corresponding pins of the tool can engage.

GemƤƟ einer AusfĆ¼hrungsform der Erfindung ist im Zusatzmittelkanal ein RĆ¼ckschlagventil vorgesehen, das in Strƶmungsrichtung des Zusatzmittels, das heiƟt in Richtung des Hauptkanals, ƶffnet und entsprechend in die Gegenrichtung schlieƟt.According to one embodiment of the invention, a check valve is provided in the additive channel, which opens in the direction of flow of the additive, that is in the direction of the main channel, and accordingly closes in the opposite direction.

Bei einer vorteilhaften AusfĆ¼hrungsform der Erfindung ist ein TragstƤnder vorgesehen, insbesondere mit einer BodenstandflƤche oder einer WandanschlussflƤche, und der Grundkƶrper ist Ć¼ber seiner LƤngsachse zumindest teilweise in Umfangsrichtung verdrehbar im TragstƤnder gelagert. Damit ist es mƶglich, den Grundkƶrper und damit den Anschluss am Zusatzmitteleinlass, beispielsweise fĆ¼r eine Zusatzmittelkartusche oder einen Ansaugschlauch zu verschwenken, je nachdem, auf welcher Seite ein entsprechender Raum vorhanden ist oder wo sich ein Zusatzmittelkanister befindet. Zudem kann sich der Grundkƶrper Schlauchbewegungen anpassen.In an advantageous embodiment of the invention, a support stand is provided, in particular with a floor standing surface or a wall connection surface, and the base body is mounted at least partially rotatable in the circumferential direction over its longitudinal axis in the support stand. This makes it possible to pivot the base body and thus the connection at the additive inlet, for example for an additive cartridge or a suction hose, depending on which side a corresponding space is present or where there is an additive canister. In addition, the main body can adapt to hose movements.

Als Lager fĆ¼r den Grundkƶrper im TragstƤnder kƶnnen beispielsweise O-Ringe, insbesondere Teflon-O-Ringe, dienen und eine axiale Sicherung kann insbesondere durch wenigstens einen in eine Umfangsnut im Grundkƶrper eingreifenden Stift, wie Gewindestift des TagstƤnders dienen. Wenn ein solcher Stift fest eingeschraubt wird, wird hingegen eine Fixierung des Grundkƶrpers gegen Verdrehen im TragstƤnder erreicht.As a bearing for the main body in the support stand, for example, O-rings, in particular Teflon O-rings serve, and an axial securing can serve in particular by at least one engaging in a circumferential groove in the base pin, such as threaded pin of the TagstƤnders. If such a pin is firmly screwed, however, a fixation of the body is achieved against rotation in the support stand.

Der erfindungsgemƤƟe Zumischer zeichnet sich durch Robustheit, einen kompakten Aufbau, eine kostengĆ¼nstige Produktion und durch die mƶgliche Einstellung vieler verschiedener Zumischraten aus, beispielsweise von 0 - 0,1 - 0,2 - 0,5 -1 - 2 - 3 - 4 - 5 - 6 % aus. SelbstverstƤndlich kƶnnen auch einzelne Raten weggelassen werden oder andere Raten hinzugefĆ¼gt werden.The admixture according to the invention is characterized by robustness, a compact design, a cost-effective production and by the possible setting of many different Zumischraten, for example from 0 - 0.1 - 0.2 - 0.5 -1 - 2 - 3 - 4 -. 5 - 6% off. Of course, individual rates can be omitted or other rates added.

Die Erfindung soll nachfolgend anhand von AusfĆ¼hrungsbeispielen und den Figuren exemplarisch beschrieben werden.The invention will be described by way of example with reference to exemplary embodiments and the figures.

Es zeigen:

Figur 1
eine dreidimensionale Ansicht eines erfindungsgemƤƟ ausgefĆ¼hrten Zumischers;
Figur 2
einen vertikalen Axialschnitt durch den Zumischer aus der Figur 1;
Figur 3
eine DosierhĆ¼lse des Zumischers aus den Figuren 1 und 2;
Figur 4
den Grundkƶrper des Zumischers aus den Figuren 1 und 2;
Figur 5
den Grundkƶrper aus der Figur 4 in einem Axialschnitt;
Figur 6
einen Einstellring des Zumischers aus den Figuren 1 und 2;
Figur 7
einen TragstƤnder des Zumischers aus den Figuren 1 und 2;
Figur 8
eine schematische Darstellung einer DosierhĆ¼lse mit in Umfangsrichtung sich verjĆ¼ngender Dosierƶffnung.
Show it:
FIG. 1
a three-dimensional view of an inventively designed Zumischers;
FIG. 2
a vertical axial section through the admixture of the FIG. 1 ;
FIG. 3
a metering of Zumischers from the Figures 1 and 2 ;
FIG. 4
the main body of the Zumischers from the Figures 1 and 2 ;
FIG. 5
the main body of the FIG. 4 in an axial section;
FIG. 6
an adjustment of the Zumischers from the Figures 1 and 2 ;
FIG. 7
a support stand of Zumischers from the Figures 1 and 2 ;
FIG. 8
a schematic representation of a dosing with circumferentially tapered dosing.

In den Figuren 1 und 2 ist ein AusfĆ¼hrungsbeispiel eines erfindungsgemƤƟen Zumischers dargestellt, mit einem Grundkƶrper 1, der einen Hauptkanal 2 aufweist, der sich von einem Wassereinlassende 3 zu einem Lƶschmittelauslassende 4 erstreckt. Beispielsweise sind an einem Ende oder beiden Enden 3, 4 Storzkupplungen zum Anschluss eines Feuerwehrschlauches oder einer anderen Feuerwehreinrichtung vorgesehen.In the Figures 1 and 2 an embodiment of a Zumischers invention is shown, comprising a main body 1, which has a main channel 2, which extends from a water inlet end 3 to a extinguishing agent outlet end 4. For example, at one end or both ends 3, 4 Storz couplings are provided for connecting a fire hose or other fire department.

Im Hauptkanal 2 mĆ¼ndet ein Zusatzmittelkanal 5, dem Ć¼ber den Zusatzmitteleinlass 6 ein Zusatzmittel, das dem durch den Hauptkanal 2 strƶmenden Lƶschwasser zudosiert werden soll, zugefĆ¼hrt werden kann. Auch der Zusatzmitteleinlass 6 weist beispielsweise eine Storzkupplung auf.In the main channel 2 opens an additive channel 5, which via the additive inlet 6, an additive which is to be metered into the extinguishing water flowing through the main channel 2, can be supplied. Also, the additive inlet 6 has, for example, a Storz coupling.

Im Zusatzmittelkanal 5 ist ein RĆ¼ckschlagventil 7 vorgesehen.In the additive channel 5, a check valve 7 is provided.

Der Grundkƶrper 1 ist drehbar in einem TragstƤnder 8 gelagert. Wie andere in den Figuren gezeigte Details ist dies jedoch nur eine mƶgliche Option. Der gezeigte TragstƤnder 8 weist einen Tragring 9 auf, der den Grundkƶrper 1 umschlieƟt. Vorliegend wird ein Gleitlager durch zwei O-Ringe 10 zwischen dem Tragring 9 und der AuƟenflƤche des Grundkƶrpers 1 gebildet. Der Grundkƶrper 1 ist im Tragring 9 durch einen in eine Umfangsnut im Grundkƶrper 1 eingeschraubten Sicherungsstift 11 des Tragrings 9 gegen axiales Verschieben gesichert.The main body 1 is rotatably mounted in a support stand 8. However, like other details shown in the figures, this is just one possible option. The shown Support stand 8 has a support ring 9 which surrounds the base body 1. In the present case, a slide bearing is formed by two O-rings 10 between the support ring 9 and the outer surface of the main body 1. The main body 1 is secured in the support ring 9 by a screwed into a circumferential groove in the base body 1 locking pin 11 of the support ring 9 against axial displacement.

Im Bereich des anderen axialen Endes des Grundkƶrpers 1 liegt dieser einfach auf einem Auflager 12 des TragstƤnders 8 auf.In the region of the other axial end of the main body 1, this is simply on a support 12 of the support post 8.

Unter ergƤnzendem Hinzuziehen der Figuren 3 bis 6 wird ersichtlich, dass der Zusatzmittelkanal 5 Ć¼ber eine DosierhĆ¼lse 13 im Hauptkanal 2 mĆ¼ndet. Die DosierhĆ¼lse 13 ist im gezeigten AusfĆ¼hrungsbeispiel drehbar im Grundkƶrper 1 gelagert, welcher zugleich einen Blendenkƶrper 14 fĆ¼r die DosierhĆ¼lse 13 beziehungsweise fĆ¼r einzelne Dosierbohrungen 15 in der DosierhĆ¼lse 13 bildet. Die Dosierbohrungen 15 sind in Umfangsrichtung der DosierhĆ¼lse 13 hintereinander angeordnet und zwar vorliegend auf einem konischen axialen Abschnitt 16 der DosierhĆ¼lse 13.With additional consultation of the FIGS. 3 to 6 It will be seen that the additive channel 5 opens via a metering sleeve 13 in the main channel 2. The metering sleeve 13 is rotatably mounted in the illustrated embodiment in the base body 1, which at the same time forms a diaphragm body 14 for the metering sleeve 13 or for individual metering holes 15 in the metering sleeve 13. The metering holes 15 are arranged one behind the other in the circumferential direction of the metering sleeve 13, in the present case on a conical axial section 16 of the metering sleeve 13.

Die Dosierbohrungen 15 kƶnnen durch Verdrehen der DosierhĆ¼lse 13 wahlweise in eine fluchtende Ausrichtung mit der Blendenƶffnung 17 des Blendenkƶrpers 14, hier des Grundkƶrpers 1, gebracht werden. Je nachdem, welche der Dosierbohrungen 15 mit der Blendenƶffnung 17 fluchtet, wird ein mehr oder minder groƟer Strƶmungsquerschnitt fĆ¼r das Zusatzmittel zur VerfĆ¼gung gestellt, Ć¼ber welchen der Zusatzmittelkanal 5 im Hauptkanal 2 mĆ¼ndet.The metering holes 15 can be brought by rotation of the metering sleeve 13 either in an aligned alignment with the aperture 17 of the visor body 14, here the base body 1. Depending on which of the metering holes 15 is aligned with the aperture 17, a more or less large flow cross-section for the additive is provided, via which the additive channel 5 opens into the main channel 2.

Die Verdrehung der DosierhĆ¼lse 13 erfolgt mittels des Einstellrings 18, der radial auƟen drehbar auf dem Grundkƶrper 1 gelagert ist. Der Einstellring 18 ist Ć¼ber einen Gewindestift 19, der durch eine Bohrung im Einstellring 18 und ein Langloch 20 im Grundkƶrper 1 in die DosierhĆ¼lse 13 eingeschraubt ist, formschlĆ¼ssig mit der DosierhĆ¼lse 13 verbunden. Das Einschraubloch in der DosierhĆ¼lse 13 ist in der Figur 3 mit 21 bezeichnet.The rotation of the dosing sleeve 13 takes place by means of the adjusting ring 18 which is rotatably mounted radially on the base body 1 outside. The adjusting ring 18 is connected via a threaded pin 19 which is screwed through a hole in the adjusting ring 18 and a slot 20 in the base body 1 in the dosing sleeve 13, positively connected to the dosing sleeve 13. The threaded hole in the dosing sleeve 13 is in the FIG. 3 denoted by 21.

Der im gezeigten AusfĆ¼hrungsbeispiel in Radialrichtung aus dem Einstellring 18 herausragende Gewindestift 19 dient zugleich als Indikator der Relativstellung des Einstellrings 18 auf dem Grundkƶrper 1 und damit der DosierhĆ¼lse 13 innerhalb des Grundkƶrpers 1.The protruding in the embodiment shown in the radial direction from the adjusting ring 18 threaded pin 19 also serves as an indicator of the relative position of the adjusting ring 18 on the base body 1 and thus the dosing sleeve 13 within the body. 1

Der Einstellring 18 ist Ć¼ber elastisch in Radialrichtung abgestĆ¼tzte Raststifte 22, die in entsprechende Rastƶffnungen 23 auf dem ƤuƟeren Umfang des Grundkƶrpers 1 eingreifen, zur Auswahl vorgegebener Relativstellungen zwischen dem Grundkƶrper 1 und dem Einstellring 18 gegenĆ¼ber dem Grundkƶrper 1 einstellbar, sodass eine Indexierung erreicht wird.The adjusting ring 18 is elastically supported in the radial direction locking pins 22 which engage in corresponding detent openings 23 on the outer circumference of the base body 1, for selecting predetermined relative positions between the base body 1 and the adjusting ring 18 relative to the base body 1, so that an indexing is achieved.

Weitere im Grundkƶrper 1 vorgesehene Aussparungen beziehungsweise Umfangsnuten dienen der Gewichtsersparnis.Further provided in the base body 1 recesses or circumferential grooves serve to save weight.

Ein weiterer Gewindestift 24 dient im gezeigten AusfĆ¼hrungsbeispiel als Zeiger fĆ¼r eine Skala auf dem Einstellring 18.Another grub screw 24 is used in the illustrated embodiment as a pointer for a scale on the adjusting ring 18th

Der Zusatzmittelkanal 5 wird vorteilhaft durch ein RohrstĆ¼ck 25 gebildet, das einteilig mit dem Grundkƶrper 1 ausgefĆ¼hrt ist oder in diesen eingeschraubt oder anders an diesem formschlĆ¼ssig oder stoffschlĆ¼ssig befestigt ist.The additive channel 5 is advantageously formed by a pipe section 25, which is designed in one piece with the base body 1 or screwed into this or otherwise secured to this form-fitting or cohesively.

Der Zusatzmittelkanal 5 mĆ¼ndet Ć¼ber die Blendenƶffnung 17 und die entsprechende Dosierbohrung 15 in einer Hauptkanalengstelle 26 im Hauptkanal 2, sodass eine VenturidĆ¼se ausgebildet wird, Ć¼ber welche das Zusatzmittel selbsttƤtig in den Hauptkanal 2 und damit das Lƶschwasser eingesaugt wird. Die Hauptkanalengstelle 26 wird insbesondere unmittelbar durch die den Hauptkanal 2 unmittelbar umschlieƟende DosierhĆ¼lse 13 gebildet.The additive channel 5 opens via the aperture 17 and the corresponding metering 15 in a Hauptkanalengstelle 26 in the main channel 2, so that a Venturi nozzle is formed, via which the additive is automatically sucked into the main channel 2 and thus the extinguishing water. The main channel throat 26 is formed in particular directly by the main channel 2 immediately enclosing dosing sleeve 13.

Im Bereich des Wassereinlassendes 3 ist in den Hauptkanal 2 ein AbstĆ¼tzring 27 eingeschraubt, der eine AbstĆ¼tzkraft zusƤtzlich zu der Strƶmungskraft des Lƶschwassers auf die DosierhĆ¼lse 13 ausĆ¼bt, um den konisch axialen Abschnitt 16 gegen eine gegengleiche FlƤche im Grundkƶrper 1 anzupressen und dadurch die Dosierbohrungen 15 gegeneinander abzudichten, sodass kein Zusatzmittel Ć¼ber dem ƤuƟeren Umfang der DosierhĆ¼lse 13 zu einer weiteren Dosierbohrung 15 strƶmen kann und ausschlieƟlich durch die fluchtend zur Blendenƶffnung 17 ausgerichtete Dosierbohrung 15 strƶmt.In the area of the water inlet end 3, a support ring 27 is screwed into the main channel 2, which has a supporting force in addition to the flow force of the Lƶschwassers on the dosing sleeve 13 exerts to press the conical axial portion 16 against a similar surface in the base body 1 and thereby seal the metering holes 15 against each other, so that no additive can flow over the outer periphery of the metering 13 to a further metering 15 and exclusively through the in alignment with the aperture 17 aligned metering bore 15 flows.

In der Figur 7 ist nochmals die mƶgliche Gestaltung des TragstƤnders 8 mit dem Tragring 9 und dem Auflager 12 gezeigt. Jedoch kƶnnten auch andere Gestaltungen gewƤhlt werden.In the FIG. 7 is again the possible design of the support post 8 with the support ring 9 and the support 12 is shown. However, other designs could be chosen.

In der Figur 8 ist eine alternative Ausgestaltung einer DosierhĆ¼lse 13 gezeigt, welche anstelle der zuvor dargestellten einzelnen Dosierbohrungen 15 eine sich in Umfangsrichtung erstreckende Dosierƶffnung 28 aufweist, die hier mit einer radial innerhalb der DosierhĆ¼lse 13 positionierten Blendenƶffnung 17 zusammenarbeitet, um den Strƶmungsquerschnitt fĆ¼r das Zusatzmittel mehr oder minder zu begrenzen, in AbhƤngigkeit der Drehstellung der DosierhĆ¼lse 13 relativ zu dem die Blendenƶffnung 17 aufweisenden Blendenkƶrper 14. Hier ist die DosierhĆ¼lse 13 radial auƟen drehbar auf dem Blendenkƶrper 14 gelagert, was jedoch nicht zwingend ist. Aufgrund dessen, dass sich die Dosierƶffnung 28 in der Umfangsrichtung der DosierhĆ¼lse 13 verjĆ¼ngt, wird durch Drehung der DosierhĆ¼lse 13 in eine erste Richtung der freie Strƶmungsquerschnitt fĆ¼r das Zusatzmittel verringert und durch Drehen der DosierhĆ¼lse 13 in die entgegengesetzte Umfangsrichtung vergrĆ¶ĆŸert.In the FIG. 8 an alternative embodiment of a metering sleeve 13 is shown, which instead of the previously shown individual metering holes 15 has a circumferentially extending metering opening 28 which cooperates here with a radially positioned within the metering sleeve 13 aperture 17 to the flow cross section for the additive more or less limit, depending on the rotational position of the metering sleeve 13 relative to the diaphragm opening 17 having diaphragm body 14. Here, the metering sleeve 13 is mounted radially outwardly rotatable on the visor body 14, which is not mandatory. Due to the fact that the metering opening 28 tapers in the circumferential direction of the metering sleeve 13, the free flow cross section for the additive is reduced by rotation of the metering sleeve 13 in a first direction and increased by rotating the metering sleeve 13 in the opposite circumferential direction.

Bei allen AusfĆ¼hrungsbeispielen kƶnnte selbstverstƤndlich anstelle der Verdrehung oder zusƤtzlich zu der Verdrehung der DosierhĆ¼lse 13 auch der Blendenkƶrper 14 verdrehbar sein, um die gewĆ¼nschte Relativposition zwischen Blendenkƶrper 14 und DosierhĆ¼lse 13 einzustellen. Auch ist es mƶglich, die Reihenfolge von radial innen nach radial auƟen zwischen der DosierhĆ¼lse 13 und dem Blendenkƶrper 14 umzudrehen.In all embodiments, of course, instead of twisting or in addition to the rotation of the dosing 13 and the diaphragm body 14 could be rotated to adjust the desired relative position between diaphragm body 14 and dosing sleeve 13. It is also possible to reverse the order from radially inward to radially outward between the metering sleeve 13 and the visor body 14.

WƤhrend sich das erste AusfĆ¼hrungsbeispiel gemƤƟ der Figuren 1 bis 7 durch sehr genau einstellbare Strƶmungsquerschnitte fĆ¼r das Zusatzmittel auszeichnet, bietet das AusfĆ¼hrungsbeispiel gemƤƟ der Figur 8 eine kontinuierliche Verstellung des Strƶmungsquerschnitts in der MĆ¼ndung des Zusatzmittelkanals 5 im Hauptkanal 2.While the first embodiment according to the FIGS. 1 to 7 characterized by very precisely adjustable flow cross sections for the additive, the embodiment according to the FIG. 8 a continuous adjustment of the flow cross-section in the mouth of the additive channel 5 in the main channel. 2

Obwohl in den hier gezeigten AusfĆ¼hrungsbeispielen sich der Grundkƶrper 1 und die DosierhĆ¼lse 13 konzentrisch zur linearen LƤngsachse 29 erstrecken kƶnnten auch AusfĆ¼hrungsformen mit gekrĆ¼mmtem oder gewinkeltem Hauptkanal 2 vorgesehen sein.Although in the embodiments shown here, the base body 1 and the metering sleeve 13 extend concentrically to the linear longitudinal axis 29 and embodiments could be provided with a curved or angled main channel 2.

Claims (12)

Zumischer fĆ¼r eine Feuerlƶschvorrichtung zum Zumischen eines Zusatzmittels in einen Lƶschwasserstrom;
mit einem einen Hauptkanal (2) ausbildenden Grundkƶrper (1), der sich zumindest teilweise entlang einer LƤngsachse (29) erstreckt und ein Wassereinlassende (3) sowie ein Lƶschmittelauslassende (4) aufweist, die Ć¼ber den Hauptkanal (2) in strƶmungsleitender Verbindung miteinander stehen;
mit einem Zusatzmittelkanal (5), der sich von einem Zusatzmitteleinlass (6) aus erstreckt und im Hauptkanal (2) mĆ¼ndet;
dadurch gekennzeichnet, dass
im Bereich der MĆ¼ndung des Zusatzmittelkanals (5) im Hauptkanal (2) eine den Hauptkanal (2) Ć¼ber seinem ƤuƟeren Umfang unmittelbar oder mittelbar umschlieƟende DosierhĆ¼lse (13) vorgesehen ist, die eine Vielzahl von Ć¼ber dem Umfang mit Abstand zueinander angeordnete Dosierbohrungen (15) mit zueinander verschieden groƟen QuerschnittsflƤchen aufweist oder wenigstens eine sich Ć¼ber dem Umfang erstreckende Dosierƶffnung (28), deren in Richtung des Hauptkanals (2) gelegene Breite Ć¼ber dem Umfang zunehmend verjĆ¼ngt ausgefĆ¼hrt ist, aufweist und
der DosierhĆ¼lse (13) ein die DosierhĆ¼lse (13) in der Umfangsrichtung radial innen oder auƟen umgreifender Blendenkƶrper (14) zugeordnet ist, wobei die DosierhĆ¼lse (13) und/oder der Blendenkƶrper (14) in der Umfangsrichtung verdrehbar ist/sind; und
der Blendenkƶrper (14) eine Blendenƶffnung (17) aufweist, die durch Drehen des Blendenkƶrpers (14) und/oder der DosierhĆ¼lse (13) in der Umfangsrichtung in eine fluchtende Ausrichtung mit einer der Dosierbohrungen (15) oder einem Umfangsabschnitt der Dosierƶffnung (28) bringbar ist, um dadurch einen durch den Blendenkƶrper (14) und die DosierhĆ¼lse (13) gemeinsam begrenzten Strƶmungsquerschnitt durch die Blendenƶffnung (17) und die Dosierbohrung (15) oder den Umfangsabschnitt der Dosierƶffnung (28) hindurch in seiner QuerschnittsflƤche zu verkleinern oder zu vergrĆ¶ĆŸern; wobei
der Zusatzmittelkanal (5) Ć¼ber die Blendenƶffnung (17) und die mit dieser fluchtend ausgerichtete Dosierbohrung (15) oder den mit der Blendenƶffnung (17) fluchtend ausgerichteten Umfangsabschnitt der Dosierƶffnung (28) in dem Hauptkanal (2) mĆ¼ndet.Zumischer for a fire extinguishing device for admixing an additive in an extinguishing water stream;
with a main body (1) forming a main channel (2) extending at least partially along a longitudinal axis (29) and having a water inlet end (3) and an extinguishing agent outlet end (4) in fluid communication with each other via the main channel (2) ;
an additive passage (5) extending from an additive inlet (6) and opening into the main passage (2);
characterized in that
in the region of the mouth of the additive channel (5) in the main channel (2) a dosing sleeve (13) surrounding the main channel (2) over its outer circumference is provided, which comprises a plurality of metering bores (15) arranged at a distance from each other over the circumference. having mutually different sized cross-sectional areas or at least one extending over the circumference metering opening (28) whose width in the direction of the main channel (2) is running increasingly tapered over the circumference, and having
the dosing sleeve (13) is associated with the dosing sleeve (13) in the circumferential direction radially inside or outside encompassing diaphragm body (14), wherein the dosing sleeve (13) and / or the diaphragm body (14) is rotatable in the circumferential direction / are; and
the diaphragm body (14) has a diaphragm opening (17) which, by rotating the diaphragm body (14) and / or the metering sleeve (13) in the circumferential direction, is in alignment with one of the metering bores (15) or a peripheral portion of the metering port (28). can be brought to thereby a through the diaphragm body (14) and the metering sleeve (13) together limited flow cross-section through the Aperture (17) and the metering bore (15) or the peripheral portion of the metering orifice (28) through in its cross-sectional area to reduce or increase; in which
the additive channel (5) via the aperture (17) and aligned with this Dosierbohrung (15) or with the aperture (17) aligned peripheral portion of the metering opening (28) in the main channel (2) opens. Zumischer gemƤƟ Anspruch 1, dadurch gekennzeichnet, dass der Blendenkƶrper (14) als Ć¼ber dem Umfang geschlossene, den Hauptkanal (2) zumindest mittelbar umschlieƟende BlendenhĆ¼lse ausgefĆ¼hrt ist, die insbesondere durch den Grundkƶrper (1) gebildet wird.Proportioner according to claim 1, characterized in that the diaphragm body (14) closed over the circumference, the main channel (2) indirectly surrounds aperture sleeve is carried out, at least, in particular, by the base body (1) is formed. Zumischer gemƤƟ einem der AnsprĆ¼che 1 oder 2, dadurch gekennzeichnet, dass die DosierhĆ¼lse (13) innerhalb des Grundkƶrpers (1) auf einer radial nach innen gerichteten UmfangsflƤche des Grundkƶrpers (1) gleitend und insbesondere gegen diese abgedichtet drehbar gelagert ist.Zumischer according to one of claims 1 or 2, characterized in that the metering sleeve (13) within the base body (1) on a radially inwardly directed peripheral surface of the base body (1) is slidably mounted and in particular sealed against this rotatable. Zumischer gemƤƟ Anspruch 3, dadurch gekennzeichnet, dass radial auƟen auf dem Grundkƶrper (1) ein Ć¼ber dem Umfang verdrehbarer Einstellring (18) positioniert ist, der insbesondere auf einer radial nach auƟen gerichteten UmfangsflƤche des Grundkƶrpers (1) gleitend gelagert ist, wobei der Einstellring (18) formschlĆ¼ssig und/oder kraftschlĆ¼ssig mit der DosierhĆ¼lse (13) zur gemeinsamen Verdrehung, insbesondere drehstarr, verbunden ist.Zumischer according to claim 3, characterized in that radially outwardly on the base body (1) is rotatable about the circumference adjustment ring (18) is positioned, in particular on a radially outwardly directed peripheral surface of the base body (1) is slidably mounted, wherein the adjusting ring (18) positively and / or non-positively with the dosing sleeve (13) for common rotation, in particular rotationally fixed, is connected. Zumischer gemƤƟ einem der AnsprĆ¼che 1 bis 4, dadurch gekennzeichnet, dass eine Rasteinrichtung vorgesehen ist, Ć¼ber welche die Relativposition in Umfangsrichtung zwischen dem Blendenkƶrper (14) und der DosierhĆ¼lse (13) in Ć¼ber dem Umfang mit Abstand zueinander positionierten Rastpositionen festlegbar ist.Zumischer according to one of claims 1 to 4, characterized in that a locking device is provided, via which the relative position in the circumferential direction between the diaphragm body (14) and the dosing sleeve (13) can be fixed in over the circumference at a distance from each other positioned locking positions. Zumischer gemƤƟ den AnsprĆ¼chen 4 und 5, dadurch gekennzeichnet, dass die Rasteinrichtung einen oder mehrere Raststifte (22) aufweist, Ć¼ber welche der Einstellring (18) in einem Rasteingriff mit dem Grundkƶrper (1) steht.Zumischer according to claims 4 and 5, characterized in that the latching device has one or more locking pins (22), via which the adjusting ring (18) is in a latching engagement with the base body (1). Zumischer gemƤƟ einem der AnsprĆ¼che 1 bis 6, dadurch gekennzeichnet, dass die Dosierbohrungen (15) oder die Dosierƶffnung (28) in einem konischen axialen Abschnitt (16) der DosierhĆ¼lse (13) vorgesehen ist, der sich in Strƶmungsrichtung des Lƶschwassers durch den Hauptkanal (2) verjĆ¼ngt.Zumischer according to one of claims 1 to 6, characterized in that the Dosierbohrungen (15) or the metering opening (28) in a conical axial portion (16) of the metering sleeve (13) is provided, which in the flow direction of the extinguishing water through the main channel ( 2) tapers. Zumischer gemƤƟ einem der AnsprĆ¼che 1 bis 7, dadurch gekennzeichnet, dass der Zusatzmittelkanal (5) in einer Hauptkanalengstelle (26) zur Ausbildung einer VenturidĆ¼se mĆ¼ndet, wobei die VenturidĆ¼se insbesondere durch die DosierhĆ¼lse (13) gebildet wird.Zumischer according to one of claims 1 to 7, characterized in that the additive medium channel (5) in a Hauptkanalengstelle (26) opens to form a venturi, wherein the venturi is formed in particular by the metering sleeve (13). Zumischer gemƤƟ einem der AnsprĆ¼che 3 bis 8, dadurch gekennzeichnet, dass eine GleitflƤche zwischen dem Grundkƶrper (1) und der DosierhĆ¼lse (13) mit Teflon versehen, insbesondere beschichtet ist.Zumischer according to one of claims 3 to 8, characterized in that a sliding surface between the base body (1) and the dosing sleeve (13) provided with Teflon, in particular coated. Zumischer gemƤƟ einem der AnsprĆ¼che 7 bis 9, dadurch gekennzeichnet, dass die DosierhĆ¼lse (13) in Richtung der LƤngsachse (29), insbesondere in Strƶmungsrichtung des Lƶschwassers, gegen den Grundkƶrper (1) mit einer Vorspannkraft abgestĆ¼tzt ist.Zumischer according to one of claims 7 to 9, characterized in that the dosing sleeve (13) in the direction of the longitudinal axis (29), in particular in the flow direction of the extinguishing water, is supported against the base body (1) with a biasing force. Zumischer gemƤƟ einem der AnsprĆ¼che 1 bis 10, dadurch gekennzeichnet, dass im Zusatzmittelkanal (5) ein RĆ¼ckschlagventil (7) vorgesehen ist, das in einer Strƶmungsrichtung in Richtung des Hauptkanals (2) ƶffnet.Zumischer according to one of claims 1 to 10, characterized in that in the additive channel (5) a check valve (7) is provided, which opens in a flow direction in the direction of the main channel (2). Zumischer gemƤƟ einem der AnsprĆ¼che 1 bis 11, dadurch gekennzeichnet, dass ein TragstƤnder (8) insbesondere mit einer BodenstandflƤche oder WandanschlussflƤche vorgesehen ist und der Grundkƶrper (1) Ć¼ber der LƤngsachse (29) zumindest teilweise in Umfangsrichtung verdrehbar im TragstƤnder (8) gelagert ist.Zumischer according to one of claims 1 to 11, characterized in that a support stand (8) is provided in particular with a BodenstandflƤche or wall connection surface and the main body (1) over the longitudinal axis (29) at least partially rotatable in the circumferential direction in the support stand (8) is mounted ,
EP16171739.2A 2015-06-02 2016-05-27 Mixing device for a fire extinguishing apparatus Active EP3100770B1 (en)

Priority Applications (2)

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SI201630029T SI3100770T1 (en) 2015-06-02 2016-05-27 Mixing device for a fire extinguishing apparatus
PL16171739T PL3100770T3 (en) 2015-06-02 2016-05-27 Mixing device for a fire extinguishing apparatus

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DE102015210181.9A DE102015210181B3 (en) 2015-06-02 2015-06-02 Zumischer for a fire extinguishing device

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DE202017107294U1 (en) 2017-11-30 2017-12-18 Jochen Widenmann Inductor

Families Citing this family (2)

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DE102016226203A1 (en) 2016-12-23 2018-06-28 TKW Armaturenvertriebs GmbH Dosing device and mixer for fire extinguishing purposes
CN111632323B (en) * 2020-06-10 2022-06-07 ę±Ÿé—Øåø‚ä¾Øä¹”ęœŗē”µę¶ˆé˜²å·„ēØ‹ęœ‰é™å…¬åø Installation device for water spraying pipe for fire fighting

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FR2856603A1 (en) 2003-06-26 2004-12-31 Sides Fire hose for extinction fluid e.g. sodium bicarbonate solution, gun, has mechanical indexing unit to define intermediate position of external spreader tip between two extreme positions to produce mixed stream
DE102006026197A1 (en) 2005-06-06 2006-12-07 Max Widenmann Kg Armaturenfabrik Mixer unit for a fire extinguisher, to mix water and a foaming agent, has a piston to mix them together and force out the mixed foam with the piston position set automatically by the water level
US20140084076A1 (en) 2012-09-21 2014-03-27 Akron Brass Company Foam-applying nozzle

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DE3923891A1 (en) * 1989-07-19 1991-01-24 Total Feuerschutz Gmbh ADMINISTRATOR
DE3923891C2 (en) 1989-07-19 1993-04-22 Reinhard Dipl.-Ing. 6905 Schriesheim De Lansche
DE4115101A1 (en) 1991-05-08 1992-11-12 Total Feuerschutz Gmbh DOSING VALVE FOR FOAM
FR2856603A1 (en) 2003-06-26 2004-12-31 Sides Fire hose for extinction fluid e.g. sodium bicarbonate solution, gun, has mechanical indexing unit to define intermediate position of external spreader tip between two extreme positions to produce mixed stream
DE202004009297U1 (en) 2004-06-11 2004-09-09 Max Widenmann Kg Armaturenfabrik Foam control for fire fighting jet has an additional fine adjustment for adding small amounts of foam concentrate
DE102006026197A1 (en) 2005-06-06 2006-12-07 Max Widenmann Kg Armaturenfabrik Mixer unit for a fire extinguisher, to mix water and a foaming agent, has a piston to mix them together and force out the mixed foam with the piston position set automatically by the water level
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DE202017107294U1 (en) 2017-11-30 2017-12-18 Jochen Widenmann Inductor

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DE102015210181B3 (en) 2016-07-07
EP3100770B1 (en) 2018-03-14
PL3100770T3 (en) 2018-07-31

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