EP0561196A1 - Spraying apparatus for applying a liquid product such as paint - Google Patents
Spraying apparatus for applying a liquid product such as paint Download PDFInfo
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- EP0561196A1 EP0561196A1 EP93103164A EP93103164A EP0561196A1 EP 0561196 A1 EP0561196 A1 EP 0561196A1 EP 93103164 A EP93103164 A EP 93103164A EP 93103164 A EP93103164 A EP 93103164A EP 0561196 A1 EP0561196 A1 EP 0561196A1
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- Prior art keywords
- medium
- air
- compressed air
- pressure
- jet
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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
- B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
- B05B7/2489—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
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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
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
Definitions
- the invention relates to a spray device for applying a liquid medium such as paint, with a spray gun which is connected to a medium source and which has an outlet nozzle for the medium under pressure.
- Spraying devices of this type which operate in the low pressure process at approx. 0.1 to 6 bar.
- the medium exits through a round nozzle of the spray gun with a constant cross-section and is atomized by compressed air which is emitted at the same time.
- the compressed air can encircle the emerging medium jet and distribute it atomizing over a larger diameter, whereby horn air striking this medium jet can compress the jet with further atomization.
- EP-0 408 786 A1 discloses a spray gun that is always operated with compressed air in order to atomize paint.
- a comparable spraying device is known from DE 38 22 835 A1, here too the paint emerging from the spray gun is always atomized by compressed air, the size of the air pressure and the amount of paint supplied being able to vary in order to be independent of the type of paint or of the paint, from the feed geometry of the spray gun or the workpiece and its geometry to consistently constant painting results without the formation of drops or blobs.
- the present invention is based on the object of specifying a spraying device which can be used both for large-area paint application and for paint application along a very narrow strip.
- the spraying device according to the invention can optionally work in the medium high pressure range without compressed air or in the medium medium pressure range or low pressure range with compressed air.
- the spray device for applying a medium, such as paint, etc. can thus be used universally on surfaces of different sizes and widths and enables a considerably faster and more cost-effective application process than the spray devices known hitherto.
- the medium outlet nozzle of the spraying device has a cross-sectionally conical outlet opening, and that an annular nozzle surrounding the medium outlet nozzle and / or a plurality of opposing nozzles directed obliquely inwards towards the emerging medium jet are also arranged, which are connected to the compressed air source, it being preferred that both the ring nozzle and the so-called horn air nozzles surround the medium outlet nozzle.
- a control device for the medium pressure is arranged.
- the spraying device can work both with compressed air and without compressed air, a volume metering device supplying the medium preferably being able to work in a pressure range of approximately 10 to 300 bar.
- the medium pressure is preferably 70 to 300 bar, while the medium pressure in the medium-pressure process is preferably approximately 10 to 80 bar.
- the liquid medium is atomized and distributed according to the nozzle geometry without compressed air escaping from the air nozzles.
- the application jet is to be constricted in order to reduce the jet width, for example because the intended application area has only a reduced width or because e.g. if a paint application of greater concentration is to take place
- the control device for the medium reduces its pressure from high pressure to medium pressure. If compressed air is now emitted from the ring nozzle and / or the horn air nozzles arranged at an angle to the jet axis, this can change the medium jet geometry as a function of the pressure of the ring air and / or the horn air, so that the jet constricts to a desired width can be.
- an ON / OFF air control valve can be closed between the compressed air source and the spray gun, and the volume dispenser feeds the medium at a pressure of approx. 70 to 300 bar, at which - as mentioned - the medium alone atomized due to the material pressure and a large-area application jet is created. If, on the other hand, the application jet is to be restricted in order to apply the paint to a small area, the ON / OFF air control valve is opened, the pressure of the medium is reduced to approx. 10 to 70 bar and the compressed air supply to the ring nozzle and the horn air nozzles is adjusted in such a way that that the medium jet is constricted to the desired extent.
- the emerging medium jet can be compressed quite flatly, so that paint can be applied along a very narrow strip, if this is desired.
- high-pressure operation - without constriction due to ring air and horn air - a very wide, large-area medium jet can be emitted, which is suitable for large-area application.
- the spray device according to the invention is therefore ideally suited for the application of a medium such as paint to surfaces of different widths and thereby replaces the two spray guns previously required, which were each operated at different pressures. In this way, such an application process is considerably quicker and cheaper.
- a volume meter is preferably used as the control device for the medium to be applied, which adjusts the volume of the emerging medium and its pressure to the desired level.
- a control device for the air pressure is provided according to the invention, which should also offer the option of optionally allowing the air outlet from the ring nozzle and / or the horn air nozzles in order to influence or change the medium jet geometry in the desired manner.
- the pressure of the exiting air is adjustable, and any air outlet can also be switched off, which is provided in particular in high-pressure operation.
- the medium outlet nozzle can have a slot-shaped opening which opens conically in a cross section, or else a circular, conically widening outlet opening.
- valves be arranged in the lines connecting the compressed air source to the spray gun, namely an air control valve which switches the air supply ON or OFF, an air control valve for the horn air nozzles, which are located opposite one another on both sides of the medium outlet nozzle are arranged and are directed at an acute angle to the emerging medium jet or its central axis, and an air control valve for the ring nozzle surrounding the medium outlet nozzle.
- control unit for the volume metering device and the air valves is arranged, with the control keyboard of which the parameters of the spray gun or spraying device can be set.
- the control unit advantageously has a monitor which displays the set / actual parameters.
- the horn air compressing the medium jet more or less flat can emerge from one or more opposing pairs of horn air nozzles, and it is within the scope of the invention to arrange two or more concentric ring nozzles instead of an annular nozzle, which can optionally deliver compressed air.
- the spray device contains a spray gun 1, which is connected via lines 2 to 4 to a compressed air source 5.
- An ON / OFF air valve 6, an air control valve 7, which adjusts the compressed air supply to the horn air nozzles, not shown, and an air control valve 8, which is provided for the compressed air supply to the ring nozzle, also not shown, are arranged in lines 2 to 4.
- the spray gun 1 is also connected via a line 9 to a hydraulic volume metering device 10, the oil inlet of which is designated 11 and the material inlet 12.
- a control unit 13 for the volume metering device 10 and the air valves 6 to 8 contains a monitor which displays the set / actual parameters, and an operating keyboard 15 with which the parameters of the medium and compressed air delivery can be set or changed.
- the hydraulic volume metering device 10 guides the medium at high pressure, i.e. with about 70 to 300 bar, and the air control valve 6 switches to OFF and thus interrupts the compressed air supply to the spray gun 1. If, on the other hand, the medium jet is to be narrowed, the volume metering device 10 reduces the pressure of the medium to approximately 10 to 70 bar, which Air control valve 6 is switched ON and the air control valves 7 and 8 adjust the compressed air supply to the ring air nozzle and the horn air nozzles according to the parameters entered in the control unit 13, whereby the desired medium jet geometry is generated.
Abstract
Description
Die Erfindung betrifft eine Spritzvorrichtung zum Aufbringen eines flüssigen Mediums wie Farbe, mit einer Spritzpistole, die mit einer Mediumquelle verbunden ist und die eine Austrittsdüse für das unter Druck stehende Medium aufweist.The invention relates to a spray device for applying a liquid medium such as paint, with a spray gun which is connected to a medium source and which has an outlet nozzle for the medium under pressure.
Es sind Spritzvorrichtungen dieser Art bekannt, die im Niederdruckverfahren bei ca. 0,1 bis 6 bar arbeiten. Hierbei tritt das Medium durch eine mit gleichbleibendem Querschnitt versehene Runddüse der Spritzpistole aus und wird durch gleichzeitig abgegebene Druckluft zerstäubt. Die Druckluft kann ringförmig den austretenden Mediumstrahl umfassen und diesen auf einen größeren Durchmesser zerstäubend verteilen, wobei schräg auf diesen Mediumstrahl auftreffende Hornluft den Strahl unter weiterer Zerstäubung zusammendrücken kann.Spraying devices of this type are known which operate in the low pressure process at approx. 0.1 to 6 bar. The medium exits through a round nozzle of the spray gun with a constant cross-section and is atomized by compressed air which is emitted at the same time. The compressed air can encircle the emerging medium jet and distribute it atomizing over a larger diameter, whereby horn air striking this medium jet can compress the jet with further atomization.
Andere Spritzvorrichtungen arbeiten nach dem Hochdruckverfahren, bei dem das bei ca. 70 bis 300 bar unter Druck stehende Medium infolge des Materialdrucks zerstäubt wird, wobei die Düse eine schlitzförmige, im Querschnitt konisch sich öffnende Mündung hat, deren Geometrie die Abmessungen des entstehenden Mediumstrahls bestimmt.Other spraying devices work according to the high-pressure process, in which the medium, which is pressurized at approx. 70 to 300 bar, is atomized as a result of the material pressure, the nozzle having a slot-shaped mouth with a conically opening cross section, the geometry of which determines the dimensions of the medium jet that is created.
Mit dem sogenannten airless-Zerstäubungssystem wird ein großflächiger Auftragsstrahl erzeugt, während mit dem Niederdrucksystem ein schmaler Auftragsstrahl hervorgerufen werden kann.With the so-called airless atomization system, a large-area application jet is generated, while the low-pressure system can produce a narrow application jet.
Bei Anwendungsfällen, bei denen stellenweise eine großflächige Auftragung beträchtlicher Breite erfolgen soll und an anderer Stelle eine schmale Auftragsfläche vorgesehen ist, werden bisher zwei verschiedene Spritzpistolen eingesetzt, von denen die eine nach dem Hochdruckverfahren und die andere nach dem Niederdruckverfahren arbeitet. Der Einsatz zweier Spritzpistolen bzw. Spritzvorrichtungen unterschiedlicher Drucksysteme verursacht beträchtliche Kosten und erhöht den mit dem Auftragsvorgang verbundenen Zeitaufwand.In applications in which a large area of considerable width is to be applied in places and where a narrow application area is provided elsewhere, two different spray guns have been used so far, one of which operates according to the high pressure process and the other according to the low pressure process. The use of two spray guns or spraying devices from different printing systems causes considerable costs and increases the time required for the application process.
Die EP-0 408 786 A1 offenbart eine Spritzpistole, die stets mit Druckluft betrieben wird, um Farbe zu zerstäuben. Eine vergleichbare Spritzvorrichtung ist aus der DE 38 22 835 A1 bekannt, wobei auch hier die aus der Spritzpistole austretende Farbe stets durch Druckluft zerstäubt wird, wobei die Größe des Luftdrucks ebenso wie die zugeführte Farbmenge variieren kann, um unabhängig von der Art der Farbe bzw. des Lackes, von der Vorschubgeometrie der Spritzpistole bzw. des Werkstücks und dessen Geometrie zu immer gleichbleibenden Lackierergebnissen, ohne Tropfen- oder Klecksbildung zu gelangen.EP-0 408 786 A1 discloses a spray gun that is always operated with compressed air in order to atomize paint. A comparable spraying device is known from DE 38 22 835 A1, here too the paint emerging from the spray gun is always atomized by compressed air, the size of the air pressure and the amount of paint supplied being able to vary in order to be independent of the type of paint or of the paint, from the feed geometry of the spray gun or the workpiece and its geometry to consistently constant painting results without the formation of drops or blobs.
Das Einsatzgebiet dieser vorbekannten Spritzvorrichtungen ist begrenzt, da der Auftragsstrahl durch die Druckluft eingeengt ist. Derartige Spritzvorrichtungen sind demnach nicht zur großflächigen Farbauftragung oder Lackierung geeignet.The area of application of these previously known spraying devices is limited because the application jet is restricted by the compressed air. Such spraying devices are therefore not suitable for large-area paint application or painting.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Spritzvorrichtung anzugeben, die sowohl zum großflächigen Farbauftrag als auch zu einem Farbauftrag entlang eines sehr schmalen Streifens einsetzbar ist.The present invention is based on the object of specifying a spraying device which can be used both for large-area paint application and for paint application along a very narrow strip.
Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.This object is achieved by the features specified in the characterizing part of
Die erfindungsgemäße Spritzvorrichtung kann wahlweise im Medium-Hochdruckbereich ohne Druckluft oder im Medium-Mitteldruckbereich oder -Niederdruckbereich mit Druckluft arbeiten. Damit ist die Spritzvorrichtung zum Auftragen eines Mediums wie Farbe etc. auf Flächen unterschiedlicher Größen und Breiten universell einsetzbar und ermöglicht einen erheblich schnelleren und kostengünstigeren Auftragsvorgang als die Spritzvorrichtungen, die bisher bekannt sind.The spraying device according to the invention can optionally work in the medium high pressure range without compressed air or in the medium medium pressure range or low pressure range with compressed air. The spray device for applying a medium, such as paint, etc., can thus be used universally on surfaces of different sizes and widths and enables a considerably faster and more cost-effective application process than the spray devices known hitherto.
Des weiteren wird vorgeschlagen, daß die Medium-Austrittsdüse der Spritzvorrichtung eine querschnittlich konische Austrittsöffnung aufweist, und daß außerdem eine Ringdüse, die die Medium-Austrittsdüse umgibt, und/oder mehrere einander gegenüberliegende, schräg nach innen auf den austretenden Mediumstrahl gerichtete Düsen angeordnet sind, die mit der Druckluftquelle in Verbindung stehen, wobei bevorzugt ist, daß sowohl die Ringdüse als auch die sogenannten Hornluftdüsen die Medium-Austrittsdüse umgeben. Außerdem ist eine Steuereinrichtung für den Mediumdruck angeordnet.Furthermore, it is proposed that the medium outlet nozzle of the spraying device has a cross-sectionally conical outlet opening, and that an annular nozzle surrounding the medium outlet nozzle and / or a plurality of opposing nozzles directed obliquely inwards towards the emerging medium jet are also arranged, which are connected to the compressed air source, it being preferred that both the ring nozzle and the so-called horn air nozzles surround the medium outlet nozzle. In addition, a control device for the medium pressure is arranged.
Wie oben erwähnt, ist vorgesehen, daß die Spritzvorrichtung sowohl mit Druckluft als auch ohne Druckluft arbeiten kann, wobei ein das Medium zuführender Volumendosierer bevorzugt in einem Druckbereich von ca. 10 bis 300 bar arbeiten kann. Im Hochdruckverfahren beträgt der Mediumdruck vorzugsweise 70 bis 300 bar, während der Mediumdruck im Mitteldruckverfahren vorzugsweise ca. 10 bis 80 bar beträgt.As mentioned above, it is provided that the spraying device can work both with compressed air and without compressed air, a volume metering device supplying the medium preferably being able to work in a pressure range of approximately 10 to 300 bar. In the high-pressure process, the medium pressure is preferably 70 to 300 bar, while the medium pressure in the medium-pressure process is preferably approximately 10 to 80 bar.
Bei Hochdruck wird das flüssige Medium entsprechend der Düsengeometrie zerstäubt und verteilt, ohne daß aus den Luftdüsen Druckluft austritt. Wenn der Auftragsstrahl hingegen eingeschnürt werden soll, um die Strahlbreite zu verringern, weil beispielsweise der vorgesehene Auftragsbereich nur eine verringerte Breite hat oder weil z.B. ein Farbauftrag größerer Konzentration erfolgen soll, verringert die Steuereinrichtung für das Medium dessen Druck von Hochdruck auf Mitteldruck. Wenn nun aus der Ringdüse und/oder den im Winkel zur Strahlachse angeordneten Hornluftdüsen Druckluft abgegeben wird, kann diese die Mediumstrahlgeometrie in Abhängigkeit von dem Druck der Ringluft und/oder der Hornluft in der gewünschten Weise verändern, so daß der Strahl auf eine gewünschte Breite eingeschnürt werden kann.At high pressure, the liquid medium is atomized and distributed according to the nozzle geometry without compressed air escaping from the air nozzles. If, on the other hand, the application jet is to be constricted in order to reduce the jet width, for example because the intended application area has only a reduced width or because e.g. if a paint application of greater concentration is to take place, the control device for the medium reduces its pressure from high pressure to medium pressure. If compressed air is now emitted from the ring nozzle and / or the horn air nozzles arranged at an angle to the jet axis, this can change the medium jet geometry as a function of the pressure of the ring air and / or the horn air, so that the jet constricts to a desired width can be.
Wenn ein großflächiger Farbauftrag erfolgen soll, kann ein EIN/AUS-Luftsteuerventil zwischen der Druckluftquelle und der Spritzpistole geschlossen werden, und der Volumendosierer führt das Medium mit einem Druck von ca. 70 bis 300 bar zu, bei dem - wie erwähnt- das Medium allein infolge des Materialdrucks zerstäubt und ein großflächiger Auftragsstrahl entsteht. Wenn der Auftragsstrahl hingegen eingeengt werden soll, um die Farbe auf eine kleine Fläche aufzutragen, wird das EIN/AUS-Luftsteuerventil geöffnet, der Druck des Mediums auf ca. 10 bis 70 bar gesenkt und die Druckluftzufuhr zu der Ringdüse und den Hornluftdüsen so eingestellt, daß der Mediumstrahl in dem gewünschten Ausmaß eingeschnürt wird.If a large area of paint is to be applied, an ON / OFF air control valve can be closed between the compressed air source and the spray gun, and the volume dispenser feeds the medium at a pressure of approx. 70 to 300 bar, at which - as mentioned - the medium alone atomized due to the material pressure and a large-area application jet is created. If, on the other hand, the application jet is to be restricted in order to apply the paint to a small area, the ON / OFF air control valve is opened, the pressure of the medium is reduced to approx. 10 to 70 bar and the compressed air supply to the ring nozzle and the horn air nozzles is adjusted in such a way that that the medium jet is constricted to the desired extent.
Bei entsprechender Anordnung der Hornluftdüsen und Aufbringung eines entsprechenden Drucks kann der austretende Mediumstrahl ganz flach zusammengedrückt werden, so daß ein Farbauftrag entlang eines sehr schmalen Streifens erfolgen kann, wenn dies erwünscht ist. Andererseits kann im Hochdruckbetrieb -ohne Einschnürung durch Ringluft und Hornluft- ein sehr breiter, großflächiger Mediumstrahl abgegeben werden, der für einen großflächigen Auftrag geeignet ist.With an appropriate arrangement of the horn air nozzles and the application of a corresponding pressure, the emerging medium jet can be compressed quite flatly, so that paint can be applied along a very narrow strip, if this is desired. On the other hand, in high-pressure operation - without constriction due to ring air and horn air - a very wide, large-area medium jet can be emitted, which is suitable for large-area application.
Die erfindungsgemäße Spritzvorrichtung ist damit für das Auftragen eines Mediums wie Farbe auf Flächen unterschiedlicher Breite bestens geeignet und ersetzt dabei die bisher erforderlichen zwei Spritzpistolen, die jeweils mit unterschiedlichem Druck betrieben wurden. Hiedurch geht ein derartiger Auftragsvorgang erheblich scheller und kostengünstiger vonstatten.The spray device according to the invention is therefore ideally suited for the application of a medium such as paint to surfaces of different widths and thereby replaces the two spray guns previously required, which were each operated at different pressures. In this way, such an application process is considerably quicker and cheaper.
Als Steuereinrichtung für das aufzutragende Medium wird vorzugsweise ein Volumendosierer eingesetzt, der das Volumen des austretenden Mediums und dessen Druck auf das gewünschte Maß einstellt. Außerdem ist erfindungsgmäß eine Steuereinrichtung für den Luftdruck vorgesehen, die außerdem die Möglichkeit bieten sollte, wahlweise den Luftaustritt aus der Ringdüse und/oder den Hornluftdüsen zuzulassen, um die Mediumstrahlgeometrie in der gewünschten Weise zu beeinflussen bzw. zu verändern. Der Druck der austretenden Luft ist dabei einstellbar, wobei auch jeglicher Luftaustritt abgestellt werden kann, was insbesondere im Hochdruckbetrieb vorgesehen ist.A volume meter is preferably used as the control device for the medium to be applied, which adjusts the volume of the emerging medium and its pressure to the desired level. In addition, a control device for the air pressure is provided according to the invention, which should also offer the option of optionally allowing the air outlet from the ring nozzle and / or the horn air nozzles in order to influence or change the medium jet geometry in the desired manner. The pressure of the exiting air is adjustable, and any air outlet can also be switched off, which is provided in particular in high-pressure operation.
Die Medium-Austrittsdüse kann eine schlitzförmige Öffnung haben, die sich in einem Querschnitt konisch öffnet, oder aber eine kreisförmige, sich konisch verbreiternde Austrittsöffnung.The medium outlet nozzle can have a slot-shaped opening which opens conically in a cross section, or else a circular, conically widening outlet opening.
Mit besonderem Vorteil wird vorgeschlagen, daß in den die Druckluftquelle mit der Spritzpistole verbindenden Leitungen drei Ventile angeordnet sind, und zwar ein Luftsteuerventil, welches die Luftzufuhr EIN oder AUS schaltet, ein Luftregelventil für die Hornluftdüsen, die einander gegenüberliegend zu beiden Seiten der Medium-Austrittsdüse angeordnet sind und in einem spitzen Winkel auf den austretenden Mediumstrahl bzw. dessen Mittelachse gerichtet sind, sowie ein Luftregelventil für die die Medium-Austrittsdüse umgebende Ringdüse.It is particularly advantageously proposed that three valves be arranged in the lines connecting the compressed air source to the spray gun, namely an air control valve which switches the air supply ON or OFF, an air control valve for the horn air nozzles, which are located opposite one another on both sides of the medium outlet nozzle are arranged and are directed at an acute angle to the emerging medium jet or its central axis, and an air control valve for the ring nozzle surrounding the medium outlet nozzle.
Außerdem wird vorgeschlagen, daß eine externe Regeleinheit für den Volumendosierer und die Luftventile angeordnet ist, mit deren Bedientastatur die Parameter der Spritzpistole bzw. Spritzvorrichtung eingestellt werden können. Die Regeleinheit hat vorteilhafterweise einen Monitor, der die eingestellten Soll/Ist-Parameter anzeigt.It is also proposed that an external control unit for the volume metering device and the air valves is arranged, with the control keyboard of which the parameters of the spray gun or spraying device can be set. The control unit advantageously has a monitor which displays the set / actual parameters.
Die den Mediumstrahl mehr oder weniger flach zusammendrückende Hornluft kann aus einem oder mehreren einander gegenüberliegenden Paaren von Hornluftdüsen austreten, und es liegt im Rahmen der Erfindung, statt einer Ringdüse zwei oder mehr konzentrische Ringdüsen anzuordnen, die wahlweise Druckluft abgeben können.The horn air compressing the medium jet more or less flat can emerge from one or more opposing pairs of horn air nozzles, and it is within the scope of the invention to arrange two or more concentric ring nozzles instead of an annular nozzle, which can optionally deliver compressed air.
Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung sowie anhand der Zeichnung. Dabei zeigt die einzige Figur auf rein schematische Weise wesentliche Bauteile der erfindungsgmeäßen Spritzvorrichtung.Further details of the invention will become apparent from the following description and from the drawing. The single figure shows, in a purely schematic manner, essential components of the spraying device according to the invention.
Die Spritzvorrichtung enthält eine Spritzpistole 1, die über Leitungen 2 bis 4 mit einer Druckluftquelle 5 verbunden ist. In den Leitungen 2 bis 4 sind ein EIN/AUS-Luftventil 6, ein Luftregelventil 7, welches die Druckluftzufuhr zu den nicht dargestellten Hornluftdüsen einstellt, und ein Luftregelventil 8 angeordnet, welches für die Druckluftzufuhr zu der ebenfalls nicht dargestellten Ringdüse vorgesehen ist.The spray device contains a
Die Spritzpistole 1 ist ferner über eine Leitung 9 mit einem hydraulischen Volumendosierer 10 verbunden, dessen Öleingang mit 11 und Materialeingang mit 12 bezeichnet ist.The
Eine Regeleinheit 13 für den Volumendosierer 10 und die Luftventile 6 bis 8 enthält einen Monitor, der die eingestellten SOLL/IST-Parameter anzeigt, und eine Bedientastatur 15, mit der die Parameter der Medium- und Druckluftabgabe eingestellt bzw. geändert wrden können.A
Wenn das Medium in einem großflächigen Strahl aus der Spritzpistole 1 austreten soll, führt der hdraulische Volumendosierer 10 das Medium mit Hochdruck, d.h. mit etwa 70 bis 300 bar zu, und das Luftsteuerventil 6 schaltet auf AUS und unterbricht damit die Druckluftzufuhr zu der Spritzpistole 1. Wenn der Mediumstrahl hingegen verengt werden soll, verringert der Volumendosierer 10 den Druck des Mediums auf ca. 10 bis 70 bar, das Luftsteuerventil 6 wird auf EIN geschaltet und die Luftregelventile 7 und 8 stellen die Druckluftzufuhr zu der Ringluftdüse und den Hornluftdüsen entsprechend den in die Regeleinheit 13 eingegebenen Parameter ein, wodurch die gewünschte Mediumstrahlgeometrie erzeugt wird.If the medium is to emerge from the
Claims (8)
dadurch gekennzeichnet,
daß die Spritzvorrichtung wahlweise im Medium-Hochdruckbereich ohne Druckluft oder im Medium-Mitteldruckbereich oder -Niederdruckbereich mit Druckluft arbeiten kann.Spray device for applying a liquid medium such as paint, etc., with a spray gun which is connected to a medium source and has an outlet nozzle for the medium under pressure,
characterized by
that the spraying device can work either in the medium high pressure range without compressed air or in the medium medium pressure range or low pressure range with compressed air.
dadurch gekennzeichnet, daß die Medium-Austrittsdüse eine konische Austrittsöffnung aufweist, und von einer Ringdüse und/oder mehreren einander gegenüberliegenden, schräg auf den austretenden Mediumstrahl gerichteten Düsen umgeben ist, die mit einer Druckluftquelle (5) in Verbindung stehen, und daß eine Steuereinrichtung (10) für den Mediumdruck angeordnet ist.Spraying device according to claim 1,
characterized in that the medium outlet nozzle has a conical outlet opening and is surrounded by an annular nozzle and / or a plurality of opposing nozzles which are directed obliquely towards the emerging medium jet and which are connected to a compressed air source (5), and in that a control device ( 10) is arranged for the medium pressure.
dadurch gekennzeichnet, daß das Medium von einem hydraulischen Volumendosierer (10) zugeführt wird.Spraying device according to claim 1 or 2,
characterized in that the medium is supplied by a hydraulic volume metering device (10).
gekennzeichnet durch eine Steuereinrichtung (6, 7, 8) für den Luftdruck.Spraying device according to one of claims 1 to 3,
characterized by a control device (6, 7, 8) for the air pressure.
dadurch gekennzeichnet, daß wahlweise Druckluft aus der Ringdüse und/oder den Hornluftdüsen austritt.Spraying device according to one of claims 1 to 7,
characterized in that compressed air optionally emerges from the ring nozzle and / or the horn air nozzles.
dadurch gekennzeichnet, daß in den die Druckluftquelle (5) mit der Spritzpistole (1) verbindenden Leitungen (2, 3, 4) ein EIN/AUS-Luftsteuerventil (6), ein Luftregelventil (7) für die Hornluftdüsen und ein Luftregelventil (8) für die Ringdüse angeordnet sind.Spraying device according to one of claims 1 to 5,
characterized in that in the lines (2, 3, 4) connecting the compressed air source (5) to the spray gun (1) an ON / OFF air control valve (6), an air control valve (7) for the horn air nozzles and an air control valve (8) are arranged for the ring nozzle.
ferner gekennzeichnet durch eine externe Regeleinheit (13) für den Volumendosierer (10) und die Luftventile (6, 7, 8).Spraying device according to one of claims 1 to 6,
further characterized by an external control unit (13) for the volume metering device (10) and the air valves (6, 7, 8).
dadurch gekennzeichnet, daß das Medium einen Druck von ca. 70 bis 300 bar aufweist, wenn keine Druckluft aus den Düsen austritt, und daß der Druck des Mediums auf ca. 10 bis 70 bar gesenkt wird, wenn Ringluft und/oder Hornluft abgegeben wird, um den Mediumstrahl zu verengen.Spraying device according to one of claims 1 to 7,
characterized in that the medium has a pressure of approx. 70 to 300 bar if no compressed air emerges from the nozzles, and that the pressure of the medium is reduced to approx. 10 to 70 bar when ring air and / or horn air is emitted, to narrow the medium jet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4208500 | 1992-03-17 | ||
| DE4208500A DE4208500C2 (en) | 1992-03-17 | 1992-03-17 | Spray device for applying a liquid medium such as paint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0561196A1 true EP0561196A1 (en) | 1993-09-22 |
| EP0561196B1 EP0561196B1 (en) | 1997-04-23 |
Family
ID=6454268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93103164A Expired - Lifetime EP0561196B1 (en) | 1992-03-17 | 1993-02-27 | Spraying apparatus for applying a liquid product such as paint |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0561196B1 (en) |
| AT (1) | ATE152009T1 (en) |
| DE (2) | DE4208500C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19627353C1 (en) * | 1996-06-27 | 1997-10-23 | Feuerschutz G Knopf Gmbh | Dynamic fire extinction medium application e.g.for automatic fire extinction system |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4335827C2 (en) * | 1993-10-20 | 2001-06-07 | Siemens Ag | Process and extinguishing system for extinguishing a fire |
| DE19610589A1 (en) * | 1996-03-18 | 1997-09-25 | Duerr Gmbh & Co | Process and system for supplying paint to a coating system |
| DE19611533B4 (en) * | 1996-03-23 | 2005-11-03 | Itw Gema Ag | Device for powder coating |
| DE19615379C2 (en) * | 1996-04-18 | 2002-10-10 | Fraunhofer Ges Forschung | Pneumatic hand spray gun with automatic spray jet adjustment |
| DE20017630U1 (en) * | 1999-12-20 | 2001-03-22 | Tevkuer Talip | Paint spray gun |
| DE102006017323B4 (en) * | 2005-04-12 | 2011-01-27 | B + M Surface Systems Gmbh | Spray coating |
| DE102018118737A1 (en) | 2018-08-01 | 2020-02-06 | Sata Gmbh & Co. Kg | Nozzle for a spray gun, nozzle set for a spray gun, spray guns and method for producing a nozzle for a spray gun |
| US11826771B2 (en) | 2018-08-01 | 2023-11-28 | Sata Gmbh & Co. Kg | Set of nozzles for a spray gun, spray gun system, method for embodying a nozzle module, method for selecting a nozzle module from a set of nozzles for a paint job, selection system and computer program product |
| DE102018118738A1 (en) | 2018-08-01 | 2020-02-06 | Sata Gmbh & Co. Kg | Base body for a spray gun, spray guns, spray gun set, method for producing a base body for a spray gun and method for converting a spray gun |
| DE102020106171A1 (en) * | 2020-03-06 | 2021-09-09 | Sata Gmbh & Co. Kg | Spray gun, in particular paint spray gun |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542030A1 (en) * | 1975-09-20 | 1977-03-24 | Wilhelm Fleissner | Multi-purpose spraying set - has electric motor with optional connection to air compressor, piston diaphragm pump and-or screw pump |
| DE3409961A1 (en) * | 1984-03-17 | 1985-09-19 | Basf Farben + Fasern Ag, 2000 Hamburg | Apparatus for applying fluid samples, such as paints, pigments or the like |
| GB2167320A (en) * | 1984-09-19 | 1986-05-29 | Bl Tech Ltd | A spray control system |
| FR2623108A1 (en) * | 1987-11-12 | 1989-05-19 | Tm Tiziana Mazza | APPARATUS FOR APPLYING ADHESIVE FILMS USING A SPRAY GUN |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3507814A1 (en) * | 1985-03-06 | 1985-11-21 | Josef 7963 Eichstegen Nusser | Metering device, in particular for multi-component spray gun |
| DE3720991A1 (en) * | 1987-06-25 | 1989-03-30 | Fere Dosier Und Klebsysteme Gm | Spray device with material-flow monitoring |
| DE3822835A1 (en) * | 1988-07-06 | 1990-03-08 | Josef Schucker | Process and arrangement for coating workpiece surfaces |
| DE58905400D1 (en) * | 1989-07-19 | 1993-09-30 | Sata Farbspritztechnik | Nozzle head. |
-
1992
- 1992-03-17 DE DE4208500A patent/DE4208500C2/en not_active Expired - Fee Related
-
1993
- 1993-02-27 AT AT93103164T patent/ATE152009T1/en not_active IP Right Cessation
- 1993-02-27 DE DE59306227T patent/DE59306227D1/en not_active Expired - Fee Related
- 1993-02-27 EP EP93103164A patent/EP0561196B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2542030A1 (en) * | 1975-09-20 | 1977-03-24 | Wilhelm Fleissner | Multi-purpose spraying set - has electric motor with optional connection to air compressor, piston diaphragm pump and-or screw pump |
| DE3409961A1 (en) * | 1984-03-17 | 1985-09-19 | Basf Farben + Fasern Ag, 2000 Hamburg | Apparatus for applying fluid samples, such as paints, pigments or the like |
| GB2167320A (en) * | 1984-09-19 | 1986-05-29 | Bl Tech Ltd | A spray control system |
| FR2623108A1 (en) * | 1987-11-12 | 1989-05-19 | Tm Tiziana Mazza | APPARATUS FOR APPLYING ADHESIVE FILMS USING A SPRAY GUN |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19627353C1 (en) * | 1996-06-27 | 1997-10-23 | Feuerschutz G Knopf Gmbh | Dynamic fire extinction medium application e.g.for automatic fire extinction system |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE152009T1 (en) | 1997-05-15 |
| EP0561196B1 (en) | 1997-04-23 |
| DE59306227D1 (en) | 1997-05-28 |
| DE4208500A1 (en) | 1993-09-23 |
| DE4208500C2 (en) | 1994-05-11 |
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