EP0278373A2 - Gas-wiping nozzle for continuously moving surfaces - Google Patents

Gas-wiping nozzle for continuously moving surfaces Download PDF

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Publication number
EP0278373A2
EP0278373A2 EP88101512A EP88101512A EP0278373A2 EP 0278373 A2 EP0278373 A2 EP 0278373A2 EP 88101512 A EP88101512 A EP 88101512A EP 88101512 A EP88101512 A EP 88101512A EP 0278373 A2 EP0278373 A2 EP 0278373A2
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EP
European Patent Office
Prior art keywords
nozzle
gas
cover elements
slot
base body
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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
EP88101512A
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German (de)
French (fr)
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EP0278373B1 (en
EP0278373A3 (en
Inventor
Paul Fontaine
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Unitas SA
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Unitas SA
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Priority to AT88101512T priority Critical patent/ATE78878T1/en
Publication of EP0278373A2 publication Critical patent/EP0278373A2/en
Publication of EP0278373A3 publication Critical patent/EP0278373A3/en
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
    • C23C2/18—Removing excess of molten coatings from elongated material

Definitions

  • the invention relates to a nozzle for blowing off excess flowable coating material from continuously moving surfaces, for example from galvanized strip, which has a hollow base body which extends over the entire width of a coating device and in which gas which is to be blown out can be distributed and under pressure has the length of the base body extending elongated mouthpiece, which contains in its flat end face a nozzle slot from which the gas is blown out.
  • nozzles are arranged on both sides of the strip sheet running out of the coating bath, the nozzle slots of which extend over the full working width of the device, the nozzle slots of the opposing nozzles lying opposite one another. They are covered against each other by the band plate running between them.
  • strip material is processed whose width is less than the maximum working width of the device, gas is blown out on one side of the strip material from the opposing nozzles, which gas is ineffective for stripping or blowing off coating material from the surfaces of the strip material.
  • This not only leads to unnecessary gas consumption and thus energy expenditure for gas production, but also to turbulence in the gas streams that meet the strip material. If you work with a gas other than uft, the unnecessary gas consumption also plays an economic role for cost reasons. This is all the more true since coating devices for strip material can rarely be used over the full working width, but the strip to be coated, such as strip plate, often fluctuate in width.
  • the invention has for its object to provide with simple means the ability to adjust the stripping or blowing off excess flowable coating agent from continuously moving surfaces such as strip plate nozzles to the required working width, so that only so much gas is always blown out needs to be, as is necessary for stripping off the excess coating agent and accordingly unnecessary operating costs and also turbulence of the gas used for blowing off can be avoided next to the side edges of the strip material.
  • cover elements can be placed loosely on the end face of the mouthpiece to limit the outlet width of the nozzle slot.
  • cover elements can, for example, be designed as plates or Io as flexible sheets and can be kept in stock in different widths.
  • the working width of the nozzle gap or of the nozzle slot is limited in a simple manner or adjusted to the desired working area by placing simple platelets at the points from which a gas is to escape, in particular in the area immediately next to the side edges of the strip material to be stripped or puts on sheets, which can also be variable in size.
  • These relatively light cover elements which are loosely placed on the generally vertical or approximately vertical face of the mouthpiece of the nozzle, adhere to the nozzle mouthpiece due to the suction effect emanating from the gas blown out of the nozzle and cover the slot at the points at which no gas should escape .
  • cover elements such as plates, sheets or the like are expedient. chosen so wide that the same gas can escape from the slot on both sides, because in this way the gas flowing around the ends of the cover elements causes a suction effect, which the plate, sheet or the like. holds with sufficient strength on the nozzle slot and thus covers it in the desired manner.
  • the cover elements provided according to the invention drop off, but this does not play an important economic role because the cover elements can be produced inexpensively and, accordingly, can also be kept in large numbers in stock.
  • the cover elements can also be captively attached to a guide.
  • the cover elements to be provided according to the invention are easy to install since they can be designed extremely easily. They can also be conveniently adjusted and readjusted while the system is running.
  • the plates, leaves or the like are expedient. dimensioned so that they protrude at least on the top over the mouthpiece, where they are sucked in by the pressure prevailing in the nozzle. They can thus be easily gripped or held and, accordingly, can be attached and readjusted particularly advantageously.
  • the nozzle (l) has a hollow base body (2) of approximately teardrop-shaped cross section, the inner cavity (3) of which can be connected to a pressure gas source (not shown), so that gas under pressure flows into the cavity (3) and is evenly distributed therein .
  • the base body (2) is equipped with a narrowed mouthpiece (4), the flat end (5) of which contains a slot (6) which extends over the entire length of the nozzle (l) and from which the cavity (3) of the base body (2) located, pressurized gas can flow out in the form of a narrow curtain-like jet.
  • the width of the slot (6) is selected so that more pressurized gas can flow into the cavity (3) than can flow out of the slot (6), the gas located in the cavity (3) will extend over the entire length of the slot (6 ) blown out with uniform thickness and with the desired nozzle effect.
  • small cover plates (7) are placed on the end face (5) of the mouthpiece (4), which, according to FIG. 1, have the upper edge (7a) over the end face (5 ) protrude from the mouthpiece (4) so that they can be comfortably gripped and positioned and / or moved or removed by hand.
  • FIG. 2 shows that the plates (7) are held by the gas flowing out of the slot (6) on the end face (5) of the mouthpiece (4).
  • the arrows (8) drawn in FIG. 2 symbolize the gas flow. It can be seen that the gas flow in the edge region of a placed plate (7) loses its normally straight direction and is deflected more or less strongly when flowing around the side edges (7b) of the plate (7), and forms vortices (8a) which form the plate (7) press on the face (5) of the mouthpiece (4). This surprisingly results in a pressure effect of the relatively light plate (7) against the end face (5) of the mouthpiece (4), which is sufficient to hold the plate (7) on the mouthpiece (4) so that certain of the plate (7) Areas of the slot (6) can be covered.
  • platelets (7) in the edge region of the working width of the nozzle (1) are expedient if no blowing action is desired there. In this way the gas consumption can be reduced, just as undesired blowing effects can be avoided where the nozzle is not supposed to work.
  • the platelets (7) are each fastened to a slide (10) which is positioned on a rod (11) running above the nozzle (l) in the longitudinal direction of the rod and thus along the nozzle slot (6 ) are movable.
  • connection between the plate (7) and the respective carriage (10) is, for example, by a wire (12) or another connecting element, if necessary. also a thread or the like. produced.
  • the plates (7) can be adjusted particularly well because you do not have to reach close to the nozzle slot (6) by hand. In addition, the plates (7) do not fall off even when the nozzle is at a standstill and are therefore immediately available again when the operation starts again.
  • two nozzles (1a and 1b) lying opposite one another are provided, the slots (6) of which lie opposite one another at a short distance.
  • Bow-like plates (13) are provided which hang on a carriage (14) which can be moved on parallel rods (15 and 16).
  • a bracket (17) is used to connect the plate (13) and the carriage (14).
  • the saddle-like plate (13) has two legs (13a and 13b) which lie against the opposing nozzle slots (6) of the nozzles (1a and 1b) when they are working.
  • the plates (7 and 13) are attached to a holder in the embodiments according to FIGS. 3 and 4, they are in the same way on the end face (5) of the mouthpiece (4 ) held the nozzles, as explained above in connection with FIGS. 1 and 2.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating Apparatus (AREA)
  • Coating With Molten Metal (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

Abstract

The nozzle for gas-wiping excess flowable coating agent from continuously moving surfaces, for example galvanised sheet strip, has a hollow base body which extends across the entire width of the coating device and in which pressurised gas which is to be blown out can distribute itself and which is provided with an elongate outlet extending over the length of the base body and having a nozzle slot in its plane side, from which the gas is blown; the exit width of the nozzle slot can be limited by covering elements which can be loosely placed on the side of the outlet, so that pressurised gas emerges under control only where it is required. <IMAGE>

Description

Die Erfindung betrifft eine Düse zum Abblasen von überschüssigem fließ­fähigen Beschichtungsmittel von kontinuierlich bewegten Oberflächen, beispielsweise von verzinktem Bandblech, die einen sich über die gesamte Breite einer Beschichtungsvorrichtung erstreckenden hohlen Grundkörper, in dem sich auszublasendes, unter Druck stehendes Gas verteilen kann, und ein sich über die Länge des Grundkörpers erstreckendes langgestrecktes Mundstück aufweist, das in seiner ebenen Stirnseite einen Düsenschlitz enthält, aus dem das Gas ausgeblasen wird.The invention relates to a nozzle for blowing off excess flowable coating material from continuously moving surfaces, for example from galvanized strip, which has a hollow base body which extends over the entire width of a coating device and in which gas which is to be blown out can be distributed and under pressure has the length of the base body extending elongated mouthpiece, which contains in its flat end face a nozzle slot from which the gas is blown out.

Bei bekannten Beschichtungsanlagen zum Herstellen von verzinktem Band­blech sind beidseits des aus dem Beschichtungsbad herauslaufenden Band­bleches Düsen angeordnet, deren Düsenschlitze sich über die volle Arbeits­breite der Vorrichtung erstrecken, wobei die Düsenschlitze der einander gegenüberliegenden Düsen einander gegenüber liegen. Sie werden von dem zwischen sie hindurchlaufenden Bandblech gegeneinander abgedeckt.In known coating systems for the production of galvanized strip sheet, nozzles are arranged on both sides of the strip sheet running out of the coating bath, the nozzle slots of which extend over the full working width of the device, the nozzle slots of the opposing nozzles lying opposite one another. They are covered against each other by the band plate running between them.

Wird Bandmaterial verarbeitet, dessen Breite geringer als die maximale Arbeitsbreite der Vorrichtung ist, wird wengistens auf einer Seite des Bandmaterials aus den einander gegenüberliegenden Düsen Gas ausgeblasen, das für das Abstreifen bzw. Abblasen von Beschichtungsmittel von den Oberflächen des Bandmaterials wirkungslos ist. Das führt nicht nur zu einem unnötigen Gasverbrauch und damit Energieaufwand für die Gasförderung, sondern auch zu Verwirbelungen der neben dem Bandmaterial aufeinander­treffenden Gasströme. Wird mit einem anderen Gas als uft gearbeitet, spielt der überflüssige Gasverbrauch auch aus Kostengründen wirtschaft­lich eine Rolle. Dies gilt um so mehr, als Beschichtungsvorrichtungen für Bandmaterial selten auf der vollen Arbeitsbreite genutzt werden können, die zu beschichtenden Bänder wie Bandblech aber in ihrer Breite häufig schwanken.If strip material is processed whose width is less than the maximum working width of the device, gas is blown out on one side of the strip material from the opposing nozzles, which gas is ineffective for stripping or blowing off coating material from the surfaces of the strip material. This not only leads to unnecessary gas consumption and thus energy expenditure for gas production, but also to turbulence in the gas streams that meet the strip material. If you work with a gas other than uft, the unnecessary gas consumption also plays an economic role for cost reasons. This is all the more true since coating devices for strip material can rarely be used over the full working width, but the strip to be coated, such as strip plate, often fluctuate in width.

Der Erfindung liegt die Aufgabe zugrunde, mit einfachen Mitteln die Mög­lichkeit zu schaffen, die zum Abstreifen bzw. Abblasen von überschüssigem fließfähigen Beschichtungsmittel von kontinuierlich bewegten Oberflächen wir Bandblech verwendeten Düsen auf die jeweils erforderliche Arbeits­breite einstellen zu können, so daß stets nur so viel Gas ausgeblasen zu werden braucht, wie zum Abstreifen des überschüssigen Beschichtungs­mittels notwendig ist und dementsprechend unnötige Betriebskosten und auch Verwirbelungen des zum Abblasen verwendeten Gases neben den Seiten­rändern des Bandmaterials vermieden werden können.The invention has for its object to provide with simple means the ability to adjust the stripping or blowing off excess flowable coating agent from continuously moving surfaces such as strip plate nozzles to the required working width, so that only so much gas is always blown out needs to be, as is necessary for stripping off the excess coating agent and accordingly unnecessary operating costs and also turbulence of the gas used for blowing off can be avoided next to the side edges of the strip material.

Diese Aufgabe wird erfindungsgemäß bei einer Düse der eingangs genannten Gattung dadurch gelöst, daß zum Begrenzen der Austrittsbreite des Düsen­schlitzes auf die Stirnseite des Mundstückes Abdeckelemente lose aufleg­bar sind. Diese Abdeckelemente können beispielsweise als Plättchen oder Io auch als flexible Blätter ausgebildet sein und in unterschiedlicher Breite auf Vorrat gehalten werden.This object is achieved according to the invention in a nozzle of the type mentioned in the introduction in that cover elements can be placed loosely on the end face of the mouthpiece to limit the outlet width of the nozzle slot. These cover elements can, for example, be designed as plates or Io as flexible sheets and can be kept in stock in different widths.

Erfindungsgemäß wird die Arbeitsbreite des Düsenspaltes bzw. des Düsen­schlitzes in einfacher Weise dadurch begrenzt bzw. auf den gewünschten Arbeitsbereich eingestellt, daß man an den Stellen, aus denen ein Gas austreten soll, nämlich insbesondere im Bereich unmittelbar neben den Seitenkanten des abzustreifenden Bandmaterials, einfache Plättchen oder Blätter auflegt, die in ihrer Größe auch variabel sein können. Diese lose auf die im allgemeinen senkrecht oder etwa senkrecht stehende Stirn­seite des Mundstückes der Düse aufgelegten verhältnismäßig leichten Ab­deckelemente haften aufgrund der von dem aus der Düse ausgeblasenen Gas ausgehenden Saugwirkung auf dem Düsenmundstück und decken den Schlitz an den Stellen ab, an denen kein Gas austreten soll.According to the invention, the working width of the nozzle gap or of the nozzle slot is limited in a simple manner or adjusted to the desired working area by placing simple platelets at the points from which a gas is to escape, in particular in the area immediately next to the side edges of the strip material to be stripped or puts on sheets, which can also be variable in size. These relatively light cover elements, which are loosely placed on the generally vertical or approximately vertical face of the mouthpiece of the nozzle, adhere to the nozzle mouthpiece due to the suction effect emanating from the gas blown out of the nozzle and cover the slot at the points at which no gas should escape .

Zweckmäßig sind die Abdeckelemente wie Plättchen, Blätter od.dgl. so breit gewählt, daß an beiden Seiten derselben Gas aus dem Schlitz aus­treten kann, weil auf diese Weise das um die Enden der Abdeckelemente herumströmende Gas eine Saugwirkung hervorruft, welche das Plättchen, Blatt od.dgl. mit ausreichender Festigkeit auf dem Düsenschlitz hält und diesen damit in der gewünschten Weise abdeckt.The cover elements such as plates, sheets or the like are expedient. chosen so wide that the same gas can escape from the slot on both sides, because in this way the gas flowing around the ends of the cover elements causes a suction effect, which the plate, sheet or the like. holds with sufficient strength on the nozzle slot and thus covers it in the desired manner.

Bei Arbeitsunterbrechung der Düse fallen die erfindungsgemäß vorgesehenen Abdeckelemente zwar ab, jedoch spielt dies wirtschaftlich keine bedeutende Rolle, weil die Abdeckelemente preiswert hergestellt und dementsprechend auch in großer Anzahl auf Lager gehalten werden können. Die Abdeckelemente können aber auch unverlierbar an einer Führung angehängt sein.When the nozzle is interrupted, the cover elements provided according to the invention drop off, but this does not play an important economic role because the cover elements can be produced inexpensively and, accordingly, can also be kept in large numbers in stock. The cover elements can also be captively attached to a guide.

Die erfindungsgemäß vorzuseheneden Abdeckelemente sind, da sie äußerst leicht ausgebildet werden können, problemlos zu installieren. Sie können auch während des Laufes der Anlage bequem einjustiert und auch nachjustiert werden.The cover elements to be provided according to the invention are easy to install since they can be designed extremely easily. They can also be conveniently adjusted and readjusted while the system is running.

Zweckmäßig sind die Plättchen, Blätter od.dgl. so dimensioniert, daß sie zumindest an der Oberseite über das Mundstück, an dem sie vom in der Düse herrschenden Druck festgesaugt werden, überstehen. Sie lassen sich somit leicht ergreifen oder halten und dementsprechend besonders vorteilhaft anbringen und auch nachjustieren.The plates, leaves or the like are expedient. dimensioned so that they protrude at least on the top over the mouthpiece, where they are sucked in by the pressure prevailing in the nozzle. They can thus be easily gripped or held and, accordingly, can be attached and readjusted particularly advantageously.

In der Zeichnung sind Ausführungsbeispiele der erfindungsgemäßen Düse dargestellt, und zwar zeigt

  • Figur 1 eine schaubildliche Ansicht der Düse mit auf deren Mundstück aufgesetzten Abdeckelementen,
  • Figur 2 einen Teilschnitt durch das Mundstück der Düse im Bereich eines aufgesetzten Abdeckelementes,
  • Figur 3 eine schaubildliche Ansicht einer gegenüber Fig. 1 abgewandelten Ausführungsform und
  • Figur 4 eine schaubildliche Ansicht einer dritten Ausführungsform.
In the drawing, exemplary embodiments of the nozzle according to the invention are shown, and that shows
  • FIG. 1 shows a perspective view of the nozzle with cover elements placed on its mouthpiece,
  • FIG. 2 shows a partial section through the mouthpiece of the nozzle in the area of an attached cover element,
  • Figure 3 is a perspective view of an embodiment modified from FIG. 1 and
  • Figure 4 is a perspective view of a third embodiment.

Die Düse (l) hat einen hohlen Grundkörper (2) etwa tropfenförmigen Quer­schnittes, dessen innerer Hohlraum (3) an eine nicht dargestellte Druk­gasquelle angeschlossen werden kann, so daß unter Druck stehendes Gas in den Hohlraum (3) strömt und in diesem sich gleichmäßig verteilt. An der Vorderseite ist der Grundkörper (2) mit einem verengten Mundstück (4) ausgestattet, dessen ebene Stirnseite (5) einen sich über die gesamte Länge der Düse (l) erstreckenden Schlitz (6) enthält, aus dem das im Hohlraum (3) des Grundkörpers (2) befindliche, unter Druck stehende Gas in Form eines schmalen vorhangartigen Strahles ausströmen kann. Da die Weite des Schlitzes (6) so gewählt ist, daß in den Hohlraum (3) mehr unter Druck stehendes Gas nachströmen als aus dem Schlitz (6) ausströmen kann, wird das im Hohlraum (3) befindliche Gas über die gesamte Länge des Schlitzes (6) mit gleichmäßiger Stärke und mit dem gewünschten Düsen­effekt ausgeblasen.The nozzle (l) has a hollow base body (2) of approximately teardrop-shaped cross section, the inner cavity (3) of which can be connected to a pressure gas source (not shown), so that gas under pressure flows into the cavity (3) and is evenly distributed therein . At the front, the base body (2) is equipped with a narrowed mouthpiece (4), the flat end (5) of which contains a slot (6) which extends over the entire length of the nozzle (l) and from which the cavity (3) of the base body (2) located, pressurized gas can flow out in the form of a narrow curtain-like jet. Since the The width of the slot (6) is selected so that more pressurized gas can flow into the cavity (3) than can flow out of the slot (6), the gas located in the cavity (3) will extend over the entire length of the slot (6 ) blown out with uniform thickness and with the desired nozzle effect.

An Stellen, an welchen aus dem Schlitz (6) kein Gas ausströmen soll, sind an die Stirnseite (5) des Mundstückes (4) kleine Abdeckplättchen (7) gelegt, die gemäß Figur 1 mit ihrer Oberkante (7a) über die Stirn­seite (5) des Mundstückes (4) überstehen, so daß sie von Hand bequem erfaßt und positioniert und/oder versetzt bzw. entfernt werden können.In places where no gas should flow out of the slot (6), small cover plates (7) are placed on the end face (5) of the mouthpiece (4), which, according to FIG. 1, have the upper edge (7a) over the end face (5 ) protrude from the mouthpiece (4) so that they can be comfortably gripped and positioned and / or moved or removed by hand.

Figur 2 zeigt, daß die Plättchen (7) von dem aus dem Schlitz (6) aus­strömenden Gas an der Stirnseite (5) des Mundstückes (4) gehalten werden. Die in Figur 2 eingezeichneten Pfeile (8) symbolisieren die Gasströmung. Es ist erkennbar, daß die Gasströmung im Kantenbereich eines aufgelegten Plättchens (7) ihre normalerweise grade Richtung verliert und beim Um­strömen der Seitenkanten (7b) des Plättchens (7) mehr oder weniger stark umgelenkt wird, und Wirbel (8a) bildet, welche das Plättchen (7) auf die Stirnseite (5) des Mundstückes (4) drücken. Dadurch ergibt sich über­raschenderweise ein Andruckeffekt des verhältnismäßig leichten Plättchens (7) gegen die Stirnseite (5) des Mundstückes (4), der ausreicht, um das Plättchen (7) am Mundstück (4) zu halten, so daß vom Plättchen (7) ge­wisse Bereiche des Schlitzes (6) abgedeckt werden können.Figure 2 shows that the plates (7) are held by the gas flowing out of the slot (6) on the end face (5) of the mouthpiece (4). The arrows (8) drawn in FIG. 2 symbolize the gas flow. It can be seen that the gas flow in the edge region of a placed plate (7) loses its normally straight direction and is deflected more or less strongly when flowing around the side edges (7b) of the plate (7), and forms vortices (8a) which form the plate (7) press on the face (5) of the mouthpiece (4). This surprisingly results in a pressure effect of the relatively light plate (7) against the end face (5) of the mouthpiece (4), which is sufficient to hold the plate (7) on the mouthpiece (4) so that certain of the plate (7) Areas of the slot (6) can be covered.

Beispielsweise sind Plättchen (7) im Randbereich der Arbeitsbreite der Düse (l) zweckmäßig, wenn dort keine Blaswirkung erwünscht ist. Auf diese Weise läßt sich der Gasverbrauch reduzieren, ebenso wie unerwünschte Blaswirkungen dort vermieden werden können, wo die Düse nicht arbeiten soll.For example, platelets (7) in the edge region of the working width of the nozzle (1) are expedient if no blowing action is desired there. In this way the gas consumption can be reduced, just as undesired blowing effects can be avoided where the nozzle is not supposed to work.

Bei der in Figur 3 dargestellten Ausführungsform sind die Plättchen (7) jeweils an einem Schlitten (10) befestigt, welche auf einer oberhalb der Düse (l) parallel zu dieser verlaufenden Stange (11) in Längsrichtung der Stange und somit entlang dem Düsenschlitz (6) verschiebbar sind.In the embodiment shown in FIG. 3, the platelets (7) are each fastened to a slide (10) which is positioned on a rod (11) running above the nozzle (l) in the longitudinal direction of the rod and thus along the nozzle slot (6 ) are movable.

Die Verbindung zwischen den Plättchen (7) und dem jeweiligen Schlitten (10) wird beispielsweise von einem Draht (12) oder einem anderen Ver­bindungselement, ggfls. auch einem Faden od.dgl. hergestellt.The connection between the plate (7) and the respective carriage (10) is, for example, by a wire (12) or another connecting element, if necessary. also a thread or the like. produced.

Bei dieser Ausführungsform lassen sich die Plättchen (7) besonders gut verstellen, weil man mit der Hand nicht in die Nähe des Düsenschlitzes (6) reichen muß. Hinzu kommt, daß die Plättchen (7) auch bei Stillstands­zeiten der Düse nicht herabfallen und somit bei erneutem Betriebsbeginn unmittelbar wieder zur Verfügung stehen.In this embodiment, the plates (7) can be adjusted particularly well because you do not have to reach close to the nozzle slot (6) by hand. In addition, the plates (7) do not fall off even when the nozzle is at a standstill and are therefore immediately available again when the operation starts again.

Bei der Ausführungsform gemäß Figur 4 sind zwei einander gegenüberliegende Düsen (1a und 1b) vorgesehen, deren Schlitze (6) einander in geringem Abstand gegenüberliegen. Es sind bügelartige Plättchen (13) vorge­sehen, die an einem Schlitten (14) hängen, der auf parallelen Stangen (l5 und 16) verschiebbar ist. Ein Bügel (17) dient zur Verbindung zwi­schen den Plättchen (13) und dem Schlitten (14).In the embodiment according to FIG. 4, two nozzles (1a and 1b) lying opposite one another are provided, the slots (6) of which lie opposite one another at a short distance. Bow-like plates (13) are provided which hang on a carriage (14) which can be moved on parallel rods (15 and 16). A bracket (17) is used to connect the plate (13) and the carriage (14).

Das sattelartig ausgebildete Plättchen (13) hat zwei Schenkel (13a und 13b), welche sich an die einander gegenüberliegenden Düsenschlitze (6) der Düsen (1a und 1b) legen, wenn diese arbeiten.The saddle-like plate (13) has two legs (13a and 13b) which lie against the opposing nozzle slots (6) of the nozzles (1a and 1b) when they are working.

Obwohl bei den Ausführungsformen gemäß Fig. 3 und 4 die Plättchen (7 bzw. 13) an einer Halterung angebracht sind, werden sie im Betrieb der betreffenden Düsen (1 bzw. 1a) in gleicher Weise an der Stirnseite (5) des Mundstückes (4) der Düsen gehalten, wie oben in Verbindung mit Fig. 1 und 2 erläutert.Although the plates (7 and 13) are attached to a holder in the embodiments according to FIGS. 3 and 4, they are in the same way on the end face (5) of the mouthpiece (4 ) held the nozzles, as explained above in connection with FIGS. 1 and 2.

Claims (5)

1. Düse zum Abblasen von überschüssigem fließfähigen Beschichtungsmittel od.dgl. von kontinuierlich bewegten Oberflächen, beispielsweise von verzinktem Bandblech, mit einem sich über die gesamte Breite der Be­schichtungsvorrichtung erstreckenden hohlen Grundkörper, in dem sich auszublasendes, unter Druck stehendes Gas verteilen kann, und mit einem sich über die Länge des Grundkörpers erstreckenden langge­streckten Mundstück, das in seiner ebenen Stirnseite einen Düsenschlitz enthält, aus dem das Gas ausgeblasen wird,
dadurch gekennzeichnet, daß zum Begrenzen der Austrittsbreite des Düsenschlitzes (6) auf die Stirnseite des Mund­stückes (4) Abdeckelemente (7) lose auflegbar sind.1. Nozzle for blowing off excess flowable coating agent or the like. of continuously moving surfaces, for example of galvanized sheet metal, with a hollow base body that extends over the entire width of the coating device, in which gas that is to be blown out can be distributed, and with an elongated mouthpiece that extends over the length of the base body and that in contains a nozzle slot on its flat face from which the gas is blown out,
characterized in that to limit the outlet width of the nozzle slot (6) on the end face of the mouthpiece (4) cover elements (7) can be placed loosely. 2. Düse nach Anspruch 1, dadurch gekennzeichnet, daß die Abdeckelemente (7) als Plättchen ausgebildet sind.2. Nozzle according to claim 1, characterized in that the cover elements (7) are designed as a plate. 3. Düse nach Anspruch 1, dadurch gekennzeichnet, daß die Abdeckelemente (7) als flexible Blätter ausgebildet sind.3. Nozzle according to claim 1, characterized in that the cover elements (7) are designed as flexible sheets. 4. Düse nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Abdeckelemente (7; 13) an einer sich parallel zur Düse (1) er­streckenden Führung (11; 15, 16) angehängt sind.4. Nozzle according to one of claims 1 to 3, characterized in that the cover elements (7; 13) on a parallel to the nozzle (1) extending guide (11; 15, 16) are attached. 5. Düse nach Anspruch 4, dadurch gekennzeichnet, daß die Abdeckelemente (13) doppelt für zwei einander gegenüberliegende Düsen (1a und 1b) ausgebildet sind.5. Nozzle according to claim 4, characterized in that the cover elements (13) are double for two opposing nozzles (1a and 1b).
EP88101512A 1987-02-11 1988-02-03 Gas-wiping nozzle for continuously moving surfaces Expired - Lifetime EP0278373B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88101512T ATE78878T1 (en) 1987-02-11 1988-02-03 NOZZLE FOR BLOWING OFF CONTINUOUSLY MOVING SURFACES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3704199 1987-02-11
DE19873704199 DE3704199A1 (en) 1987-02-11 1987-02-11 NOZZLE FOR BLOWING CONTINUOUSLY MOVING SURFACES

Publications (3)

Publication Number Publication Date
EP0278373A2 true EP0278373A2 (en) 1988-08-17
EP0278373A3 EP0278373A3 (en) 1989-03-15
EP0278373B1 EP0278373B1 (en) 1992-07-29

Family

ID=6320737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88101512A Expired - Lifetime EP0278373B1 (en) 1987-02-11 1988-02-03 Gas-wiping nozzle for continuously moving surfaces

Country Status (5)

Country Link
EP (1) EP0278373B1 (en)
AT (1) ATE78878T1 (en)
DE (2) DE3704199A1 (en)
ES (1) ES2033945T3 (en)
GR (1) GR3005694T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2140944A1 (en) * 2008-07-03 2010-01-06 Linde AG Adjustable baffles for gas wiping
CN102527588A (en) * 2010-12-31 2012-07-04 深圳市海太阳实业有限公司 Edge width adjusting clamp for coating pole piece

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393237B (en) * 1989-04-11 1991-09-10 Lisec Peter NOZZLE FOR DRYING GLASS PANELS
DE19707157B4 (en) * 1997-02-22 2006-04-06 Weitmann & Konrad Gmbh & Co Kg Device for dusting moving flat products
DE10245074A1 (en) * 2002-09-27 2004-04-01 Voith Paper Patent Gmbh Doctor unit wipes off or equalises coating dye applied on running paper or board and features counter pressure unit, which exerts pressure on doctor element at height of pressure gap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687103A (en) * 1971-01-28 1972-08-29 Youngstown Sheet And Tube Co Controlled-width fluid doctor
FR2208003A2 (en) * 1972-11-27 1974-06-21 Italsider Spa
US3941086A (en) * 1973-08-08 1976-03-02 Italsider S.P.A. Fluid doctor blade
EP0249234A1 (en) * 1986-06-12 1987-12-16 DUMA Konstruktionsbüro Blow-off device for the continuous two-sided coating of strip metal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3314163A (en) * 1964-02-21 1967-04-18 Kohler Coating Machinery Corp Nozzle construction for coating machines and the like
US4392613A (en) * 1980-12-22 1983-07-12 Armco Inc. Discharge gap cleaning device
GB2096490B (en) * 1981-04-13 1984-12-05 Davey Loewy Ltd Spraying apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687103A (en) * 1971-01-28 1972-08-29 Youngstown Sheet And Tube Co Controlled-width fluid doctor
FR2208003A2 (en) * 1972-11-27 1974-06-21 Italsider Spa
US3941086A (en) * 1973-08-08 1976-03-02 Italsider S.P.A. Fluid doctor blade
EP0249234A1 (en) * 1986-06-12 1987-12-16 DUMA Konstruktionsbüro Blow-off device for the continuous two-sided coating of strip metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2140944A1 (en) * 2008-07-03 2010-01-06 Linde AG Adjustable baffles for gas wiping
CN102527588A (en) * 2010-12-31 2012-07-04 深圳市海太阳实业有限公司 Edge width adjusting clamp for coating pole piece

Also Published As

Publication number Publication date
EP0278373B1 (en) 1992-07-29
DE3704199C2 (en) 1990-09-27
ATE78878T1 (en) 1992-08-15
DE3704199A1 (en) 1988-08-25
DE3873108D1 (en) 1992-09-03
GR3005694T3 (en) 1993-06-07
EP0278373A3 (en) 1989-03-15
ES2033945T3 (en) 1993-04-01

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