EP2708284B1 - Injector nozzle and adapter unit for an injector nozzle - Google Patents

Injector nozzle and adapter unit for an injector nozzle Download PDF

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Publication number
EP2708284B1
EP2708284B1 EP13003740.1A EP13003740A EP2708284B1 EP 2708284 B1 EP2708284 B1 EP 2708284B1 EP 13003740 A EP13003740 A EP 13003740A EP 2708284 B1 EP2708284 B1 EP 2708284B1
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EP
European Patent Office
Prior art keywords
nozzle
medium
adapter unit
injector
injector nozzle
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EP13003740.1A
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German (de)
French (fr)
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EP2708284A2 (en
EP2708284A3 (en
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Uwe Dederichs
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids

Definitions

  • the invention relates to an injector nozzle according to the preamble of claim 1.
  • Such injector nozzle is through the US 2009/134237 A1 known.
  • Another injector nozzle is through the DE 20 2011 051147 U1 known.
  • the conduit for the second medium is inserted through the conduit for the first medium and extends to the nozzle outlet.
  • a known spray nozzle is provided on an outer jacket, an adapter unit.
  • the adapter unit is formed in one piece.
  • a housing for a vent valve which can be placed on a pressure medium line.
  • the housing consists of two differently shaped cup-shaped housing parts.
  • WO 2012/012521 A1 By the WO 2012/012521 A1 is a spray device in which in the outer jacket of the nozzle an inlet opening for a chemical is provided. In this inlet opening a pipe is inserted.
  • an injector nozzle By the US 2011/0174893 an injector nozzle is known, which has in the outer casing of the nozzle body inlet openings for chemicals.
  • Another injector nozzle is known as an air injector nozzle from the plant protection.
  • the Venturi nozzle self-priming air injector nozzle is used on plant protection equipment to reduce the drift of the pesticide or spray-liquid drops.
  • the spray mixture is mixed with air to make the drops larger.
  • the known injector nozzle is limited to this field of application.
  • the object of the invention is thus seen to further develop the injector nozzle of the type mentioned in such a way that a wide range of applications arises.
  • an injector nozzle according to the preamble of claim 1 is formed according to the characterizing features of this claim.
  • Plant protection devices are equipped with several injector nozzles.
  • each nozzle can now be supplied separately with a desired second liquid as desired, which is added to the first liquid. This makes it possible to apply different liquids or liquid mixtures at the same time, so that the scope of application in the plant protection area is considerably expanded. Since the injector nozzle according to the invention operates on the principle of a self-priming nozzle, direct feeding of the second liquid is possible without the aid of metering pumps and other control units.
  • the second liquid such as pesticides, fertilizer solutions or the like at each injection nozzle is fed shortly before the spray mixture in the environment and not previously fed into the broth cycle as previously in the prior art, whereby each nozzle separately as described above with a desired Liquid can be charged.
  • the first liquid medium is water or a spraying broth mixture intended for general application, wherein a brightening container of the plant spraying device serves as a reservoir for this first liquid medium.
  • an embodiment of the invention provides that the adapter unit has sealing elements which are arranged between the inner surface of the adapter unit and the outer jacket of the nozzle orifice.
  • the sealing elements can either be fixedly mounted in the adapter shells or placed separately on the nozzle mouthpiece when the adapter unit is attached.
  • a further embodiment of the invention therefore provides that the adapter unit has a quick coupling system or a hose nozzle for connecting a hose feed line for the second medium.
  • the hose supply extends to a storage container for the second medium to be fed.
  • the property of an air injector nozzle to produce a significantly lower proportion of fine droplets at the nozzle outlet is significantly reduced.
  • a further particular embodiment of the invention provides that a further inlet opening for a gaseous medium is provided on the outer jacket of the nozzle mouthpiece. Air can now be sucked into a second injector unit, which would be downstream of the first mixing chamber, via this further inlet opening.
  • the advantages of an air injector nozzle with air injection to form larger drops and thus reduce the drift of the drops would thus be restored.
  • the arrangement of the injector units with mixing chamber could be done in several stages in front of the outlet nozzle and also allow the feeding of several different liquids to a nozzle. If it is not desired to feed a second liquid medium, the hose feed line can remain open and suck in air. Through the hose supply while a foreign substance entry through the air supply channels, as is often the case in previous nozzles in practice, largely avoided.
  • a further embodiment of the invention provides that a nozzle holder is provided, which is releasably or firmly connected to the nozzle mouthpiece.
  • This embodiment is particularly important in an adapter unit, which is firmly connected to the outer shell of the nozzle mouthpiece, since here replacement of the injector nozzle can be done only as a unit together with the nozzle holder.
  • the injector nozzle has a nozzle mouthpiece 1 with a nozzle outlet 2 and an insert 3 arranged inside the nozzle mouthpiece 1.
  • a first feed channel 4 for a first liquid medium such as water or a first spray means is provided in the axial direction, which is supplied in the direction of the arrow 5 via an inlet opening 6 in an end face 7 of the inlet 3.
  • an inlet opening 9 is provided, via which a second liquid medium in the direction of the arrow 10 is supplied and is forwarded via a second feed channel 11 for this second liquid medium.
  • the supply of the second medium takes place first in the radial direction, then axially in the second feed channel 11 and in front of the end face 7 again in the radial direction until the second medium meets the first feed channel 4.
  • the second liquid medium is then forwarded together with the first liquid medium up to a mixing chamber 12 in front of the nozzle outlet 2.
  • an adapter unit 13 detachably arranged on the outer jacket 8 of the nozzle tip 1 is according to Fig. 1 .
  • the adapter unit 13 has a first adapter shell 14 and a second adapter shell 15, which are pressed by a connection system, not shown in the drawing on the nozzle mouthpiece 1 fit.
  • the first adapter shell 14 has an extending in the direction of the arrow 10 supply line 16 for the second liquid medium.
  • the supply line 16 is as a bore within the first adapter shell 14th educated.
  • the supply line 16 is fluidly connected at its lower end to the inlet opening 9 and extends at its upper end centrally by a quick coupling system 17, which is inserted in a recess of the first adapter shell 14.
  • the quick coupling system 17 in turn is connected to a hose feed line 18, via which the second medium is supplied from a reservoir, not shown in the drawing.
  • sealing elements 19 are arranged close to the inlet opening 9, so that an intake of external air or an undesirable exit of the second medium is avoided.
  • the inlet opening 9 in the outer jacket 8, which is associated with the second adapter shell 15 obvious, is completely covered by a further sealing element 19, which is also disposed between the inner surface of the second adapter shell 15 and the outer shell 8, so that here also no external air can be sucked ,
  • a hose connection is not provided.
  • the nozzle tip 1 together with the insert 3 is held by a nozzle holder 20, which may be a cap nut, for example made of metal or a cap made of plastic.
  • the first liquid medium or carrier medium in the form of water or a first spraying agent is mixed directly at the nozzle mouthpiece 1 with the second liquid medium such as a crop protection agent or a fertilizer solution.
  • the second liquid medium such as a crop protection agent or a fertilizer solution.
  • injector nozzle differs from the in Fig. 1 injector nozzle shown only in that the adapter unit 13 is fixedly connected to the outer shell 8 of the nozzle orifice 1 and, for example, is formed as a hose nozzle 21. Due to the fixed connection with the nozzle mouthpiece 1 sealing elements are not necessary. Due to the fixed connection of the adapter unit 13, it is further required that the nozzle holder 20 must always be provided because of the permanent outstanding permanent connection this form of injector nozzle can not be attached to an externally arranged nozzle holder.

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  • Nozzles (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Spray Control Apparatus (AREA)
  • Catching Or Destruction (AREA)

Description

Die Erfindung bezieht sich auf eine Injektordüse gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an injector nozzle according to the preamble of claim 1.

Eine derartige Injektordüse ist durch die US 2009/134237 A1 bekannt.Such injector nozzle is through the US 2009/134237 A1 known.

Eine weitere Injektordüse ist durch die DE 20 2011 051147 U1 bekannt. Bei dieser Düse ist die Leitung für das zweite Medium durch die Leitung für das erste Medium gesteckt und erstreckt sich bis zu dem Düsenaustritt.Another injector nozzle is through the DE 20 2011 051147 U1 known. In this nozzle, the conduit for the second medium is inserted through the conduit for the first medium and extends to the nozzle outlet.

Bei der durch die US 5 076 497 A bekannten Spritzdüse ist an einem Außenmantel eine Adaptereinheit vorgesehen. Die Adaptereinheit ist einteilig ausgebildet.At the by the US 5 076 497 A known spray nozzle is provided on an outer jacket, an adapter unit. The adapter unit is formed in one piece.

In der DE 10 2011 085 649 A1 wird ein Gehäuse für ein Entlüftungsventil beschrieben, welches an eine Druckmittelleitung aufgesetzt werden kann. Das Gehäuse besteht dabei aus zwei unterschiedlich ausgebildeten schalenförmigen Gehäuseteilen.In the DE 10 2011 085 649 A1 a housing for a vent valve is described, which can be placed on a pressure medium line. The housing consists of two differently shaped cup-shaped housing parts.

Durch die WO 2012/012521 A1 ist ein Spritzgerät bekannt, bei welchem im Außenmantel der Düse eine Eintrittsöffnung für eine Chemikalie vorgesehen ist. In diese Eintrittsöffnung ist ein Rohr hineingesteckt. Durch die US 2011/0174893 ist eine Injektordüse bekannt, welche im Außenmantel des Düsenkörpers Eintrittsöffnungen für Chemikalien aufweist.By the WO 2012/012521 A1 is a spray device is known in which in the outer jacket of the nozzle an inlet opening for a chemical is provided. In this inlet opening a pipe is inserted. By the US 2011/0174893 an injector nozzle is known, which has in the outer casing of the nozzle body inlet openings for chemicals.

Eine weitere Injektordüse ist als Luftinjektordüse aus dem Pflanzenschutz bekannt. Die nach dem Prinzip der Venturi-Düse arbeitende selbstansaugende Luftinjektordüse wird bei Pflanzenschutzgeräten eingesetzt, um die Abtrift der Tropfen des Pflanzenschutzmittels oder der Spritzbrühe zu reduzieren. Der Spritzbrühe wird Luft beigemischt, um die Tropfen größer werden zu lassen. Nachteiligerweise ist die bekannte Injektordüse auf diesen Anwendungsbereich eingeschränkt.Another injector nozzle is known as an air injector nozzle from the plant protection. The Venturi nozzle self-priming air injector nozzle is used on plant protection equipment to reduce the drift of the pesticide or spray-liquid drops. The spray mixture is mixed with air to make the drops larger. Disadvantageously, the known injector nozzle is limited to this field of application.

Durch die DE 27 48 512 A1 und die FR 2 284 083 A1 sind zweiteilige Adaptereinheiten bekannt, welche über ein Verbindungssystem an ein Rohr angepresst werden.By the DE 27 48 512 A1 and the FR 2 284 083 A1 Two-piece adapter units are known, which are pressed by a connection system to a pipe.

Die Aufgabe der Erfindung wird somit darin gesehen, die Injektordüse der eingangs genannten Art derart weiterzuentwickeln, dass ein großer Anwendungsbereich entsteht.The object of the invention is thus seen to further develop the injector nozzle of the type mentioned in such a way that a wide range of applications arises.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, dass eine Injektordüse gemäß dem Oberbegriff des Anspruchs 1 entsprechend den kennzeichnenden Merkmalen dieses Anspruchs ausgebildet ist.To solve this problem, the invention proposes that an injector nozzle according to the preamble of claim 1 is formed according to the characterizing features of this claim.

Pflanzenschutzgeräte sind mit mehreren Injektordüsen bestückt. Mit der erfindungsgemäßen Injektordüse kann nun jede Düse nach Wunsch separat mit einer gewünschten zweiten Flüssigkeit versorgt werden, welche der ersten Flüssigkeit beigemischt wird. Damit ist es möglich, zeitgleich verschiedene Flüssigkeiten bzw. Flüssigkeitsmischungen auszubringen, sodass der Anwendungsbereich im Pflanzenschutzbereich erheblich erweitert ist. Da die erfindungsgemäße Injektordüse nach dem Prinzip einer selbstansaugenden Düse arbeitet, ist die Direkteinspeisung der zweiten Flüssigkeit ohne Zuhilfenahme von Dosierpumpen und anderen Steuerungseinheiten möglich. Weiterhin wird die zweite Flüssigkeit wie beispielsweise Pflanzenschutzmittel, Düngerlösungen oder ähnliches an jeder Injektionsdüse kurz vor dem Austritt der Spritzbrühe in die Umgebung eingespeist und nicht wie bisher im Stand der Technik vorher zentral in den Brühekreislauf eingespeist, wodurch jede Düse wie vorstehend beschrieben separat mit einer gewünschten Flüssigkeit beschickt werden kann. Bei dem ersten flüssigen Medium handelt es sich um Wasser oder eines für die generelle Ausbringung vorgesehenen Spritzbrühegemisches, wobei ein Brühebehälter des Pflanzenspritzgerätes dabei als Vorratsbehälter für dieses erste flüssige Medium dient. Damit die Anbringung der Adaptereinheit an dem Düsenmundstück in möglichst einfacher Weise erfolgen kann, sieht die Erfindung vor, dass die Adaptereinheit zwei Adapterschalen aufweist, welche über ein Verbindungssystem an das Düsenmundstück passgenau angepresst werden. Die Form der Adapterschalen ist der Außenform des Düsenmundstücks angepasst. Um das Ansaugen von Fremdluft zu verhindern sowie die Zuleitung für das zweite Medium nach außen hin abzudichten, sieht eine Ausführungsform der Erfindung vor, dass die Adaptereinheit Dichtungselemente aufweist, welche zwischen der Innenfläche der Adaptereinheit und dem Außenmantel des Düsenmundstücks angeordnet sind. Die Dichtungselemente können entweder in den Adapterschalen fest angebracht sein oder beim Anbringen der Adaptereinheit separat auf dem Düsenmundstück aufgelegt werden.Plant protection devices are equipped with several injector nozzles. With the injector nozzle according to the invention, each nozzle can now be supplied separately with a desired second liquid as desired, which is added to the first liquid. This makes it possible to apply different liquids or liquid mixtures at the same time, so that the scope of application in the plant protection area is considerably expanded. Since the injector nozzle according to the invention operates on the principle of a self-priming nozzle, direct feeding of the second liquid is possible without the aid of metering pumps and other control units. Furthermore, the second liquid such as pesticides, fertilizer solutions or the like at each injection nozzle is fed shortly before the spray mixture in the environment and not previously fed into the broth cycle as previously in the prior art, whereby each nozzle separately as described above with a desired Liquid can be charged. The first liquid medium is water or a spraying broth mixture intended for general application, wherein a brightening container of the plant spraying device serves as a reservoir for this first liquid medium. Thus, the attachment of the adapter unit can be done on the nozzle mouthpiece in the simplest possible way, the invention provides that the adapter unit has two adapter shells, which are pressed by a connection system to the nozzle mouthpiece accurately. The shape of the adapter cups is adapted to the outer shape of the nozzle tip. To prevent the intake of outside air as well as the supply line for the second medium To seal to the outside, an embodiment of the invention provides that the adapter unit has sealing elements which are arranged between the inner surface of the adapter unit and the outer jacket of the nozzle orifice. The sealing elements can either be fixedly mounted in the adapter shells or placed separately on the nozzle mouthpiece when the adapter unit is attached.

Die Injektordüse soll zuverlässig und schnell in Betrieb genommen werden. Eine weitere Ausgestaltung der Erfindung sieht deshalb vor, dass die Adaptereinheit ein Schnellkopplungsystem oder eine Schlauchtülle zum Anschließen einer Schlauchzuleitung für das zweite Medium aufweist. Die Schlauchzuleitung reicht dabei bis zu einem Vorratsbehälter für das einzuspeisende zweite Medium. Durch die Einspeisung des zweiten flüssigen Mediums wird die Eigenschaft einer Luftinjektordüse, einen deutlich geringeren Feintropfenanteil am Düsenausgang zu erzeugen, deutlich reduziert. Um diese Eigenschaftsänderung zu vermeiden, sieht eine weitere besondere Ausgestaltung der Erfindung vor, dass am Außenmantel des Düsenmundstücks eine weitere Eintrittsöffnung für ein gasförmiges Medium vorgesehen ist. Über diese weitere Eintrittsöffnung kann nun Luft in eine zweite Injektoreinheit, welche der ersten Mischkammer nachgelagert wäre, angesaugt werden. Die Vorteile einer Luftinjektordüse mit Luftinjektion, größere Tropfen zu bilden und damit die Abtrift der Tropfen zu verringern, wären somit wieder hergestellt. Die Anordnung der Injektoreinheiten mit Mischkammer könnte mehrstufig vor der Austrittsdüse erfolgen und auch so die Einspeisung mehrerer verschiedener Flüssigkeiten an einer Düse ermöglichen. Falls das Einspeisen eines zweiten flüssigen Mediums nicht gewünscht ist, kann die Schlauchzuleitung offenbleiben und Luft ansaugen. Durch die Schlauchzuleitung wird dabei ein Fremdstoffeintrag über die Luftzuführkanäle, wie er bei bisherigen Düsen im Praxiseinsatz häufig entsteht, weitgehend vermieden.The injector nozzle should be put into operation reliably and quickly. A further embodiment of the invention therefore provides that the adapter unit has a quick coupling system or a hose nozzle for connecting a hose feed line for the second medium. The hose supply extends to a storage container for the second medium to be fed. By feeding the second liquid medium, the property of an air injector nozzle to produce a significantly lower proportion of fine droplets at the nozzle outlet is significantly reduced. In order to avoid this property change, a further particular embodiment of the invention provides that a further inlet opening for a gaseous medium is provided on the outer jacket of the nozzle mouthpiece. Air can now be sucked into a second injector unit, which would be downstream of the first mixing chamber, via this further inlet opening. The advantages of an air injector nozzle with air injection to form larger drops and thus reduce the drift of the drops would thus be restored. The arrangement of the injector units with mixing chamber could be done in several stages in front of the outlet nozzle and also allow the feeding of several different liquids to a nozzle. If it is not desired to feed a second liquid medium, the hose feed line can remain open and suck in air. Through the hose supply while a foreign substance entry through the air supply channels, as is often the case in previous nozzles in practice, largely avoided.

Eine weitere Ausgestaltung der Erfindung sieht vor, dass ein Düsenhalter vorgesehen ist, welcher mit dem Düsenmundstück lösbar oder fest verbunden ist. Diese Ausgestaltung ist insbesondere bei einer Adaptereinheit von Bedeutung, welche fest mit dem Außenmantel des Düsenmundstückes verbunden, da hier ein Auswechseln der Injektordüse nur als Einheit zusammen mit dem Düsenhalter erfolgen kann.A further embodiment of the invention provides that a nozzle holder is provided, which is releasably or firmly connected to the nozzle mouthpiece. This embodiment is particularly important in an adapter unit, which is firmly connected to the outer shell of the nozzle mouthpiece, since here replacement of the injector nozzle can be done only as a unit together with the nozzle holder.

Die Vorteile der Adaptereinheit sowie deren vorteilhafte Ausgestaltungen und Weiterbildungen sind bereits vorstehend im Zusammenhang mit der Injektordüse beschrieben worden. Eine Adaptereinheit für eine Luftinjektordüse, um diese auf die Zufuhr von zwei Flüssigkeiten umzurüsten, ist im Stand der Technik nicht bekannt.The advantages of the adapter unit and its advantageous embodiments and developments have already been described above in connection with the injector nozzle. An adapter unit for an air injector nozzle in order to convert it to the supply of two liquids is not known in the prior art.

Die Erfindung wird nachstehend anhand der Zeichnung näher erläutert. Die Zeichnung zeigt ein Ausführungsbeispiel der Erfindung. Hierbei stellen dar:

  • Fig. 1 einen Längsschnitt durch das Ausführungsbeispiel mit einer lösbaren Adaptereinheit und
  • Fig. 2 einen Längsschnitt durch eine fest angeordnete Adaptereinheit, welche nicht unter die Erfindung fällt.
The invention is explained below with reference to the drawing. The drawing shows an embodiment of the invention. Here are represent:
  • Fig. 1 a longitudinal section through the embodiment with a detachable adapter unit and
  • Fig. 2 a longitudinal section through a fixedly arranged adapter unit, which does not fall under the invention.

Die Injektordüse weist ein Düsenmundstück 1 mit einem Düsenaustritt 2 und einem innerhalb des Düsenmundstücks 1 angeordneten Einsatz 3 auf. Innerhalb des Einsatzes 3 ist in axialer Richtung ein erster Zuführkanal 4 für ein erstes flüssiges Medium wie Wasser oder ein erstes Spritzmittel vorgesehen, welches in Richtung des Pfeils 5 über eine Einlassöffnung 6 in einer Stirnseite 7 des Einlasses 3 zugeführt wird. An einem Außenmantel 8 des Düsenmundstücks 1 ist eine Eintrittsöffnung 9 vorgesehen, über welches ein zweites flüssiges Medium in Richtung des Pfeils 10 zugeführt wird und über einen zweiten Zuführkanal 11 für dieses zweite flüssige Medium weitergeleitet wird. Die Zuführung des zweiten Mediums erfolgt dabei zuerst in radialer Richtung, dann axial im zweiten Zuführkanal 11 und vor der Stirnseite 7 wieder in radialer Richtung, bis das zweite Medium auf den ersten Zuführkanal 4 trifft. In dem ersten Zuführkanal 4 wird das zweite flüssige Medium dann zusammen mit dem ersten flüssigen Medium bis zu einer Mischkammer 12 vor dem Düsenaustritt 2 weitergeleitet. Am Außenmantel 8 des Düsenmundstücks 1 ist gemäß Fig. 1 eine Adaptereinheit 13 lösbar angeordnet. Die Adaptereinheit 13 weist eine erste Adapterschale 14 und eine zweite Adapterschale 15 auf, welche über ein in der Zeichnung nicht dargestelltes Verbindungssystem an dem Düsenmundstück 1 passgenau angepresst werden. Die erste Adapterschale 14 weist eine in Richtung des Pfeils 10 verlaufende Zuleitung 16 für das zweite flüssige Medium auf. Die Zuleitung 16 ist als Bohrung innerhalb der ersten Adapterschale 14 ausgebildet. Die Zuleitung 16 ist strömungsmäßig an ihrem unteren Ende mit der Eintrittsöffnung 9 verbunden und verläuft an ihrem oberen Ende zentral durch ein Schnellkopplungssystem 17, welches in einer Ausnehmung der ersten Adapterschale 14 eingesetzt ist. Das Schnellkopplungssystem 17 wiederum ist mit einer Schlauchzuleitung 18 verbunden, über welches das zweite Medium von einem in der Zeichnung nicht dargestellten Vorratsbehälter zugeführt wird. Zwischen der Innenfläche der ersten Adapterschale 14 und dem Außenmantel 8 des Düsenmundstücks 1 sind Dichtungselemente 19 zur Eintrittsöffnung 9 hin naheliegend angeordnet, damit ein Ansaugen von Fremdluft oder ein unerwünschter Austritt des zweiten Mediums vermieden wird. Die Eintrittsöffnung 9 im Außenmantel 8, welche der zweiten Adapterschale 15 naheliegend zugeordnet ist, ist durch ein weiteres Dichtungselement 19, welches ebenfalls zwischen der Innenfläche der zweiten Adapterschale 15 und dem Außenmantel 8 angeordnet ist, vollständig abgedeckt, damit hier ebenfalls keine Fremdluft angesaugt werden kann. In der zweiten Adapterschale 15 ist ein Schlauchanschluss nicht vorgesehen. Das Düsenmundstück 1 zusammen mit dem Einsatz 3 wird durch einen Düsenhalter 20 gehalten, welcher eine Überwurfmutter beispielsweise aus Metall oder eine Kappe aus Plastik sein kann.The injector nozzle has a nozzle mouthpiece 1 with a nozzle outlet 2 and an insert 3 arranged inside the nozzle mouthpiece 1. Within the insert 3, a first feed channel 4 for a first liquid medium such as water or a first spray means is provided in the axial direction, which is supplied in the direction of the arrow 5 via an inlet opening 6 in an end face 7 of the inlet 3. On an outer jacket 8 of the nozzle tip 1, an inlet opening 9 is provided, via which a second liquid medium in the direction of the arrow 10 is supplied and is forwarded via a second feed channel 11 for this second liquid medium. The supply of the second medium takes place first in the radial direction, then axially in the second feed channel 11 and in front of the end face 7 again in the radial direction until the second medium meets the first feed channel 4. In the first feed channel 4, the second liquid medium is then forwarded together with the first liquid medium up to a mixing chamber 12 in front of the nozzle outlet 2. On the outer jacket 8 of the nozzle tip 1 is according to Fig. 1 an adapter unit 13 detachably arranged. The adapter unit 13 has a first adapter shell 14 and a second adapter shell 15, which are pressed by a connection system, not shown in the drawing on the nozzle mouthpiece 1 fit. The first adapter shell 14 has an extending in the direction of the arrow 10 supply line 16 for the second liquid medium. The supply line 16 is as a bore within the first adapter shell 14th educated. The supply line 16 is fluidly connected at its lower end to the inlet opening 9 and extends at its upper end centrally by a quick coupling system 17, which is inserted in a recess of the first adapter shell 14. The quick coupling system 17 in turn is connected to a hose feed line 18, via which the second medium is supplied from a reservoir, not shown in the drawing. Between the inner surface of the first adapter shell 14 and the outer shell 8 of the nozzle mouthpiece 1 sealing elements 19 are arranged close to the inlet opening 9, so that an intake of external air or an undesirable exit of the second medium is avoided. The inlet opening 9 in the outer jacket 8, which is associated with the second adapter shell 15 obvious, is completely covered by a further sealing element 19, which is also disposed between the inner surface of the second adapter shell 15 and the outer shell 8, so that here also no external air can be sucked , In the second adapter shell 15, a hose connection is not provided. The nozzle tip 1 together with the insert 3 is held by a nozzle holder 20, which may be a cap nut, for example made of metal or a cap made of plastic.

Bei Gebrauch der erfindungsgemäßen Injektordüse wird das erste flüssige Medium oder Trägermedium in Form von Wasser oder einem ersten Spritzmittel direkt am Düsenmundstück 1 mit dem zweiten flüssigen Medium wie beispielsweise einem Pflanzenschutzmittel oder einer Düngerlösung vermischt. Somit kann jede Injektordüse nach Wunsch separat mit einer gewünschten Flüssigkeit versorgt werden. Pflanzenschutzgeräte, welche mehrere Injektordüsen aufweisen, werden somit zeitgleich mit verschiedenen Flüssigkeiten versorgt.When using the injector nozzle according to the invention, the first liquid medium or carrier medium in the form of water or a first spraying agent is mixed directly at the nozzle mouthpiece 1 with the second liquid medium such as a crop protection agent or a fertilizer solution. Thus, each injector nozzle can be supplied separately with a desired liquid as desired. Crop protection devices, which have a plurality of injector nozzles, are thus supplied at the same time with different liquids.

Die in Fig. 2 dargestellte Injektordüse unterscheidet sich von der in Fig. 1 dargestellten Injektordüse lediglich dadurch, dass die Adaptereinheit 13 fest mit dem Außenmantel 8 des Düsenmundstücks 1 verbunden ist und beispielsweise als Schlauchtülle 21 ausgebildet ist. Durch die feste Verbindung mit dem Düsenmundstück 1 sind Dichtungselemente nicht notwendig. Durch den Festanschluss der Adaptereinheit 13 ist es weiterhin erforderlich, dass der Düsenhalter 20 immer vorgesehen sein muss, da wegen des permanent herausragenden Festanschlusses diese Form der Injektordüse nicht mehr an einen extern angeordneten Düsenhalter angebracht werden kann.In the Fig. 2 shown injector nozzle differs from the in Fig. 1 injector nozzle shown only in that the adapter unit 13 is fixedly connected to the outer shell 8 of the nozzle orifice 1 and, for example, is formed as a hose nozzle 21. Due to the fixed connection with the nozzle mouthpiece 1 sealing elements are not necessary. Due to the fixed connection of the adapter unit 13, it is further required that the nozzle holder 20 must always be provided because of the permanent outstanding permanent connection this form of injector nozzle can not be attached to an externally arranged nozzle holder.

Claims (6)

  1. Injector nozzle with a nozzle mouthpiece (1) with a nozzle outlet (2) and with at least one first feed channel (4) for a first liquid medium and a second feed channel (11) for a second medium, wherein an inlet opening (9) for the second medium is provided at an outer casing (8) of the nozzle mouthpiece (1), and wherein an adapter unit (13) is releasably arranged at the outer casing (8) of the nozzle mouthpiece (1) such that the inlet opening (9) is fluidically connected to a feed line (16) for the second medium running inside the adapter unit (13), wherein the second medium is a liquid, and a mixing chamber (12) is provided before the nozzle outlet (2), wherein the first feed channel (4) conducts the second medium together with the first medium up to the mixing chamber (12),
    characterized in that
    the adapter unit (13) comprises a first adapter shell (14) and a second adapter shell (15) which are pressed onto the nozzle mouthpiece (1) with a precise fit by way of a connection system.
  2. Injector nozzle according to claim 1, characterized in that the adapter unit (13) has sealing elements (19) which are arranged between the inner face of the adapter unit (13) and the outer casing (8) of the nozzle mouthpiece (1) in order to seal the feed line (16) for the second medium air-tightly.
  3. Injector nozzle according to any of the preceding claims, characterized in that the adapter unit (13) has a fast-coupling system (17) or a hose connector (21) for connection of a hose feed line (18) for the second medium.
  4. Injector nozzle according to any of the preceding claims, characterized in that a further inlet opening for a gaseous medium is provided on the outer casing (8) of the nozzle mouthpiece (1).
  5. Injector nozzle according to any of the preceding claims, characterized in that a nozzle holder (20) is provided which is releasably or fixedly connected to the nozzle mouthpiece (1).
  6. Plant protection device with a plurality of injector nozzles according to any of claims 1 to 5, characterized in that each injector nozzle is supplied separately with a desired liquid such that different liquid mixtures can be dispensed at the same time.
EP13003740.1A 2012-09-13 2013-07-26 Injector nozzle and adapter unit for an injector nozzle Not-in-force EP2708284B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201210018125 DE102012018125A1 (en) 2012-09-13 2012-09-13 Injector nozzle and adapter unit for an injector nozzle

Publications (3)

Publication Number Publication Date
EP2708284A2 EP2708284A2 (en) 2014-03-19
EP2708284A3 EP2708284A3 (en) 2014-08-27
EP2708284B1 true EP2708284B1 (en) 2016-11-23

Family

ID=48900731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13003740.1A Not-in-force EP2708284B1 (en) 2012-09-13 2013-07-26 Injector nozzle and adapter unit for an injector nozzle

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Country Link
EP (1) EP2708284B1 (en)
DE (1) DE102012018125A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284083A1 (en) * 1974-09-06 1976-04-02 Staubli Sa Ets Branch connection collar for pipe - has two flanges hinged by pins through selective holes to vary pivot point
DE2748512A1 (en) * 1976-11-09 1978-05-18 Fip Formatura Inienzione Poli BRANCH FITTING FOR PIPES, ESPECIALLY FOR IRRIGATION PLANTS

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Publication number Priority date Publication date Assignee Title
US5076497A (en) * 1989-04-21 1991-12-31 Rabitsch Benjamin F Spray nozzle
JPH0734880B2 (en) * 1992-02-03 1995-04-19 有限会社ミナリ Painting gun
US5609299A (en) * 1994-12-05 1997-03-11 Contico International, Inc. Bottle adapter for dual piston trigger sprayer
GB0224697D0 (en) * 2002-10-24 2002-12-04 3M Innovative Properties Co Easy clean spray gun
DE102005029687B4 (en) * 2005-06-21 2007-05-31 Krautzberger Gmbh Spraying device and spray head
US8109448B2 (en) * 2007-11-25 2012-02-07 The Regents Of The University Of California System and method for at-nozzle injection of agrochemicals
US20110174893A1 (en) * 2010-01-19 2011-07-21 Allan Michael A Drip irrigation systems and methods
WO2012012521A1 (en) * 2010-07-21 2012-01-26 Briggs & Stratton Corporation Spray gun and lance
DE102011085649A1 (en) * 2010-11-18 2012-05-24 Schaeffler Technologies Gmbh & Co. Kg Hydraulic system for clutch or brake operation of vehicle, particularly motor vehicle, has vent valve arranged over opening introduced into lateral surface of pressure medium line
TWM413548U (en) * 2011-05-13 2011-10-11 Strong Fortress Tool Co Ltd Rotating ejecting apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284083A1 (en) * 1974-09-06 1976-04-02 Staubli Sa Ets Branch connection collar for pipe - has two flanges hinged by pins through selective holes to vary pivot point
DE2748512A1 (en) * 1976-11-09 1978-05-18 Fip Formatura Inienzione Poli BRANCH FITTING FOR PIPES, ESPECIALLY FOR IRRIGATION PLANTS

Also Published As

Publication number Publication date
DE102012018125A1 (en) 2014-03-13
EP2708284A2 (en) 2014-03-19
EP2708284A3 (en) 2014-08-27

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