EP0323467A1 - Installation for surface treatment of continuous-flow strip, in particular degreasing installation. - Google Patents

Installation for surface treatment of continuous-flow strip, in particular degreasing installation.

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Publication number
EP0323467A1
EP0323467A1 EP87905594A EP87905594A EP0323467A1 EP 0323467 A1 EP0323467 A1 EP 0323467A1 EP 87905594 A EP87905594 A EP 87905594A EP 87905594 A EP87905594 A EP 87905594A EP 0323467 A1 EP0323467 A1 EP 0323467A1
Authority
EP
European Patent Office
Prior art keywords
treatment
treatment channel
side walls
channel
medium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87905594A
Other languages
German (de)
French (fr)
Other versions
EP0323467B1 (en
Inventor
Franz Gerhard Pempera
Dieter Schonert
Werner Osarek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vodafone GmbH
Original Assignee
Mannesmann AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0323467A1 publication Critical patent/EP0323467A1/en
Application granted granted Critical
Publication of EP0323467B1 publication Critical patent/EP0323467B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/024—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by a combination of dipping and spraying

Definitions

  • Plant for the surface treatment of continuously moving strips in particular pickling plant
  • the invention relates to a system for the surface treatment of continuously moving belts, in particular pickling plants, in which the belt runs in the longitudinal direction through a horizontally arranged closed treatment channel, which is arranged within a container which encloses the treatment channel and is closed by a lid, into which the treatment channel or treatment medium supplied on the outlet side can be derived.
  • Treatment plants designed in this way which are known, for example, under the name flat pickling systems, are widely used today and have largely replaced the previously known deep pickling systems.
  • the treatment technology of continuously running belts could be significantly improved compared to earlier, because better concentration gradations were achieved, faster belt heating was achieved and the media exchange in the border phase between belt and treatment liquid could be activated.
  • the object of the present invention is to optimize the known strip treatment plants, in particular pickling plants of the type described at the outset, in order to shorten the pickling or treatment time even further and to improve the pickling and cleaning quality of the material to be treated.
  • a system is proposed according to the invention, which is characterized in that the treatment channel is delimited by the bottom of the container, the treatment channel side walls arranged on it and an intermediate cover on four sides, in that drainage channels are formed between the treatment channel side walls and the container inner walls the simultaneously sprayed treatment medium on the treatment channel ends on the treatment channel ends can be supplied via central openings provided in the treatment channel side walls and that the drainage channels are connected to collecting spaces via which the treatment medium can be supplied to a separately arranged storage container.
  • the advantage of the system design according to the invention is that it is possible to work with a very low liquid level in the treatment channel. This ensures a better exchange of the liquid in the band / medium boundary phase even without the turbulent behavior of the treatment medium.
  • the injection of the treatment medium band on the outlet side and in connection with the geometry of the treatment channel and with the support of the side injection also lead to turbulent behavior of the treatment medium.
  • the turbulence phase of the treatment medium band brings a better heat transfer between acid and band, and thus also a better pickling effect.
  • the pickling time can thus be shortened and the output of the system can thus be improved.
  • the proposed plant is also advantageous in ecological and economic terms; Because of the advantages of the turbulent flow, lower pickling bath temperatures can be used, so that energy can be saved. With the lower temperatures and the reduced energy supply, the evaporation and exhaust gas development can also be reduced, so that the emission in the air is lower. The pollution of the wastewater is also reduced because the pollution of the plant's wastewater is reduced due to the better purity and lower surface roughness of the belt.
  • the arrangement of the system and the use of the intermediate cover arranged on the container lid enables the system to be opened quickly with easy access to the belt in the event of malfunctions.
  • two nozzle bars are provided on the inlet and outlet sides, through which the treatment medium is injected at a flat angle to the belt, the injected treatment medium serving as a dynamic seal of the treatment channel.
  • the band is guided over sliding and liquid guide stones arranged transversely to the direction of the band running on the bottom of the treatment channel.
  • guide stones or sheets which conduct the treatment liquid flow are arranged approximately transversely to the belt within the treatment channel on the side walls or in the region of the treatment channel side walls.
  • the amount of liquid required can be kept low, which also has the advantage that the treatment liquid can be drained from the pickling area in the shortest possible time through the drainage channels into the storage container in the event of malfunctions, such as band breaks or the like, so that the pickling area is quickly accessible to eliminate the fault thanks to the quick-open lid.
  • Fig. 2 shows a cross section in the region of the center of the treatment channel
  • FIGS. 1 and 2 are plan views of the system according to FIGS. 1 and 2.
  • Fig. 1 denotes the band to be treated, which passes through the system in the direction of the arrow.
  • This consists of a container 2, which is closed by a lid 3.
  • the cover 3 is laterally sealed with a liquid seal.
  • the treatment channel according to the invention is designated 4 This is limited by the bottom of the container, the treatment channel side walls 5 and the intermediate cover 6, which can be seen in FIG. 2, on four sides, the intermediate ceiling! 6 adjustable in height, as indicated at 7, is suspended from the container lid 3. There may be a small amount of space between the treatment channel walls 5 and the intermediate cover 6.
  • the treatment channel according to the invention has sliding or liquid guide stones 8 arranged transversely to the strip running direction in the bottom region, which on the one hand support the strip 1 downwards and on the other hand serve to form turbulence of the treatment liquid.
  • the treatment liquid is supplied via nozzle bars 9 and 10, one nozzle bar 9 at the inlet and two nozzle bars 10 at the outlet, the latter above and below the belt, respectively.
  • the nozzle bars are fed with the treatment liquid from a storage container 11 via a pump system, which can optionally also be introduced laterally, as indicated at 12, directly into the channel.
  • the nozzle jet of the treatment medium of the nozzle bars 9 and 10 is directed at a flat angle to the belt, namely from the nozzle bar 9 in the belt running direction and from the nozzle bar 10 in the counter-belt running direction.
  • This creates a strong turbulence within the treatment cranium 4, which is increased in the lower region of the band due to the liquid guide stones 8.
  • Due to the high liquid pressure of the treatment medium a dynamic seal is formed in the inlet and outlet area of the treatment channel 4 by the liquid itself, so that only a small amount of treatment liquid runs back into the collecting spaces 14 from this area.
  • the collecting spaces 14 are connected to drainage channels 15, which are provided laterally outside the treatment channel in the container and to which the treatment medium is supplied via the drainage 13 in the center of the treatment channel. From there, the treatment medium returns to the reservoir 11 via a return.
  • guide devices 16 can be provided on the side of the treatment channel side walls 5, through which the treatment medium flowing in via the nozzle bar 9 is guided approximately transversely to the strip running direction. This creates the desired turbulence below the belt between the sliding and liquid guide stones.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Paper (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Treatment Of Fiber Materials (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

Dans l'installation décrite, le feuillard (1) passe longitudinalement dans une cuve fermée par un couvercle (3), disposée horizontalement et remplie du liquide de traitement. En vue d'optimiser des installations de ce type et en particuler d'améliorer la qualité du traitement et d'en réduire au minimum la durée, on ménage à l'intérieur de la cuve (2) un canal séparé (4) de traitement, qui est fermé par un couvercle intermédiaire (6) et auquel le milieu de traitement est acheminé par l'intermédiaire de rampes d'ajutages (9, 10).In the installation described, the strip (1) passes longitudinally in a tank closed by a cover (3), arranged horizontally and filled with the treatment liquid. With a view to optimizing installations of this type and in particular to improve the quality of the treatment and to minimize the duration thereof, a separate treatment channel (4) is provided inside the tank (2). , which is closed by an intermediate cover (6) and to which the treatment medium is conveyed by means of nozzle ramps (9, 10).

Description

Anlage zur Oberflächenbehandlung von kontinuierlich durchlaufenden Bändern, insbesondere Beizanlage Plant for the surface treatment of continuously moving strips, in particular pickling plant
Die Erfindung betrifft eine Anlage zur Oberflächenbehandlung von kontinuierlich durchlaufenden Bändern, insbesondere Beizanlagen, bei der das Band einen horizontal angeordneten geschlossenen Behandlungskanal in Längsrichtung durchläuft, der innerhalb eines den Behandlungskanal umschließenden, durch einen Deckel abgeschlossenen Behälters angeordnet ist, in den das dem Behandlungskanal ein- bzw. auslaufseitig zugeführte Behandlungsmedium ableitbar ist.The invention relates to a system for the surface treatment of continuously moving belts, in particular pickling plants, in which the belt runs in the longitudinal direction through a horizontally arranged closed treatment channel, which is arranged within a container which encloses the treatment channel and is closed by a lid, into which the treatment channel or treatment medium supplied on the outlet side can be derived.
Derartig ausgebildete Behandlungsanlagen, die beispielsweise unter dem Namen Flachbeizsysteme bekannt sind, finden heute verbreitet Anwendung und haben weitgehend die früher bekannten Tiefbeizen ersetzt. Mit den Flachbeizsystemen oder Horizontalbeizen konnte die Behandlungstechnik von kontinuierlich durchlaufenden Bändern gegenüber früher wesentlich verbessert werden, weil bessere Konzentrationsabstufungen erreicht wurden, eine schnellere Banderwärmung erzielbar wurde und der Medienaustausch in der Grenzphase zwischen Band und Behandlungsflüssigkeit aktivierbar wurde.Treatment plants designed in this way, which are known, for example, under the name flat pickling systems, are widely used today and have largely replaced the previously known deep pickling systems. With the flat pickling systems or horizontal pickling, the treatment technology of continuously running belts could be significantly improved compared to earlier, because better concentration gradations were achieved, faster belt heating was achieved and the media exchange in the border phase between belt and treatment liquid could be activated.
Auch ökologisch und ökonomisch waren Vorteile zu verzeichnen, beispielsweise durch Reduzierung der entstehenden Abgasmenge, durch Reduzierung der benötigten Wärme-Energiemenge und durch Reduzieren des Spülwasserbedarfes.There were also ecological and economic advantages, for example by reducing the amount of exhaust gas generated, by reducing the amount of heat and energy required and by reducing the flushing water requirement.
Aufgabe der vorliegenden Erfindung ist es, die bekannten Bandbehandlungsanlagen, insbesondere Beizanlagen der eingangs geschilderten Art zu optimieren, um die Beiz- bzw. Behandlungszeit noch weiter zu verkürzen und die Beiz- bzw. Reinigungsqualität des Behandlungsgutes zu verbessern. Zur Lösung dieser Aufgabe wird erfindungsgemäfl eine Anlage vorgeschlagen, die dadurch gekennzeichnet ist, daß der Behandlungskanal durch den Boden des Behälters, die auf diesem angeordneten Behandlungskanalseitenwände und eine Zwischendeckel an vier Seiten begrenzt ist, daß zwischen den Behandlungskanalseitenwänden und den Behälterinnenwänden Ablaufrinnen gebildet werden, denen das gleichzeitig ein- und auslaufseitig an den Behandlungskanalenden eiπgedüste Behandlungsmedium über zentrale in den Behandlungskanalseitenwänden vorgesehene Öffnungen zuleitbar ist und daß die Ablaufrinnen mit Sammelräumen verbunden sind, über die das Behandlungsmedium einem separat angeordneten Vorratsbehälter zuleitbar ist.The object of the present invention is to optimize the known strip treatment plants, in particular pickling plants of the type described at the outset, in order to shorten the pickling or treatment time even further and to improve the pickling and cleaning quality of the material to be treated. To achieve this object, a system is proposed according to the invention, which is characterized in that the treatment channel is delimited by the bottom of the container, the treatment channel side walls arranged on it and an intermediate cover on four sides, in that drainage channels are formed between the treatment channel side walls and the container inner walls the simultaneously sprayed treatment medium on the treatment channel ends on the treatment channel ends can be supplied via central openings provided in the treatment channel side walls and that the drainage channels are connected to collecting spaces via which the treatment medium can be supplied to a separately arranged storage container.
Vorteil der erfindungsgemäßen Anlagenkonzeption ist es, das im Behandlungskanal mit einem sehr niedrigen Flüssigkeitsniveau gearbeitet werden kann. Hierdurch wird schon ohne das turbulente Verhalten des Behandlungsmediums ein besserer Austausch der Flüssigkeit in der Grenzphase Band/Medium sichergestellt.The advantage of the system design according to the invention is that it is possible to work with a very low liquid level in the treatment channel. This ensures a better exchange of the liquid in the band / medium boundary phase even without the turbulent behavior of the treatment medium.
Die Eindüsung des Behandlungsmediums-Band ein und auslaufseitig in Verbindung mit der Geometrie des Behandlungskanals und mit Unterstützung der seitlichen Eindüsung führen jedoch darüber hinaus noch zu einem turbulenten Verhalten des Behandlungsmediums. Die Turbulenzphase Behandlungsmedium-Band bringt einen besseren Wärmeübergang zwischen Säure und Band, und somit auch eine bessere Beizwirkung. Somit läßt sich die Beizzeit verkürzen und damit die Ausbringung der Anlage verbessern.However, the injection of the treatment medium band on the outlet side and in connection with the geometry of the treatment channel and with the support of the side injection also lead to turbulent behavior of the treatment medium. The turbulence phase of the treatment medium band brings a better heat transfer between acid and band, and thus also a better pickling effect. The pickling time can thus be shortened and the output of the system can thus be improved.
Auch in ökologischer und ökonomischer Hinsicht ist die vorgeschlagene Anlage vorteilhaft; denn durch die Vorteile der turbulenten Strömung kann mit geringeren Beizbadtemperaturen gefahren werden, so daß Energie einsparbar ist. Mit den niedrigeren Temperaturen und der reduzierten Energiezufuhr ist auch die Verdampfung und Abgasentwicklung reduzierbar, so daß die Emission in der Luft geringer wird. Auch die Belastung der Abwasseremission wird reduziert, weil die Belastung des Abwassers der Anlage infolge der besseren Reinheit und geringeren Oberflächenrauhigkeit des Bandes geringer wird. Die Anordnung der Anlage und die Verwendung des an dem Behälterdeckel angeordneten Zwischendeckels ermöglicht ein schnelles Öffnen der Anlage mit bei Störungen leichte Zugängigkeit zum Band.The proposed plant is also advantageous in ecological and economic terms; Because of the advantages of the turbulent flow, lower pickling bath temperatures can be used, so that energy can be saved. With the lower temperatures and the reduced energy supply, the evaporation and exhaust gas development can also be reduced, so that the emission in the air is lower. The pollution of the wastewater is also reduced because the pollution of the plant's wastewater is reduced due to the better purity and lower surface roughness of the belt. The arrangement of the system and the use of the intermediate cover arranged on the container lid enables the system to be opened quickly with easy access to the belt in the event of malfunctions.
Nach einem günstigen Merkmal der Erfindung wird vorgeschlagen, daß einlaufseitig ein und auslaufseitig zwei Düsenbalken vorgesehen sind, durch die das Behandlungsmedium unter einem flachen Winkel zum Band eingedüst wird, wobei das eingedüste Behandlungsmedium als dynamische Abdichtung des Behandlungskanals dient. Das auf diese Weise in den Behandlungskanal gedüste Medium, die Säure oder Lauge erzeugt im Kanal hohe Turbulenzen, wobei der höhere Strömungsanteil in Einlaufrichtung durch das in gleicher Richtung laufende Band dadurch kompensiert wird, daß im Auslaufbereich in entgegengesetzter Richtung wirkende zwei Düsenbalken vorgesehen sind.According to a favorable feature of the invention, it is proposed that two nozzle bars are provided on the inlet and outlet sides, through which the treatment medium is injected at a flat angle to the belt, the injected treatment medium serving as a dynamic seal of the treatment channel. The medium sprayed into the treatment channel in this way, the acid or alkali generates high turbulence in the channel, the higher flow component in the inlet direction being compensated for by the belt running in the same direction in that two nozzle bars acting in the opposite direction are provided in the outlet area.
Nach einem anderen günstigen Merkmal der Erfindung ist vorgesehen, daß das Band über am Boden des Behandlungskanals quer zur Bandlaufrichtung angeordnete Gleit- und Flüssigkeitsleitsteine geführt ist. Dadurch wird auch unterhalb des Bandes ein möglichst hoher Turbulenzanteil des Behandlungsmediums erreicht, weil zwischen den Gleit-und Flüssigkeitsleitsteinen starke Strömungen und Gegenströmungen entstehen. Gleichzeitig führen die Gleitsteine das Band ohne Durchhang horizontal durch die Anlage.According to another advantageous feature of the invention, it is provided that the band is guided over sliding and liquid guide stones arranged transversely to the direction of the band running on the bottom of the treatment channel. As a result, the highest possible proportion of turbulence in the treatment medium is achieved below the belt, because strong currents and countercurrents arise between the sliding and liquid guide stones. At the same time, the sliding blocks guide the belt horizontally through the system without sag.
Nach einem anderen Merkmal der Erfindung wird vorgeschlagen, daß innerhalb des Behandlungskanals an den Seitenwänden oder im Bereichder Behandlungskanalseitenwände den Behandlungsflüssigkeitsstrom etwa quer zum Band leitende Führungssteine oder -bleche angeordnet sind. Durch diese Leiteinrichtungen wird das aus den Düsenbalken mit hohem Druck in den Behandlungskanal eintretende Behandlungsmedium in die gewünschte Richtung gelenkt. Eine Unterstützung dieser Gegebenheiten wird durch eine seitliche, quer zum Band vorgesehene Eindüsung gegeben. Vorzugsweise sind seitlich außerhalb des Behandlungskanals Ablaufrinnen für das Behandlungsmedium vorgesehen, über die das Behaπdlungsmedium in den Vorratsbehälter rückführbar ist. Durch den ständigen Kreislauf zwischen Vorratsbehälter und Behandlungskanal kann die benötigte Flüssigkeitsmenge gering gehalten werden, was auch den Vorteil bringt, daß die Behandlungsflüssigkeit aus dem Beizbereich bei Störungen, wie Bandrissen oder dergleichen innerhalb kürzester Zeit durch die Ablaufrinnen in den Vorratsbehälter abgelassen werden kann, so daß der Beizbereich durch den schnell, zu öffnenden Deckeln schnellstens zur Beseitigung der Störung zugängig ist.According to another feature of the invention, it is proposed that guide stones or sheets which conduct the treatment liquid flow are arranged approximately transversely to the belt within the treatment channel on the side walls or in the region of the treatment channel side walls. By means of these guide devices, the treatment medium entering the treatment channel from the nozzle bar at high pressure is directed in the desired direction. These conditions are supported by a lateral injection provided transversely to the belt. Drainage channels for the treatment medium are preferably provided laterally outside the treatment channel, via which the treatment medium can be returned to the storage container. Due to the constant circulation between the storage container and the treatment channel, the amount of liquid required can be kept low, which also has the advantage that the treatment liquid can be drained from the pickling area in the shortest possible time through the drainage channels into the storage container in the event of malfunctions, such as band breaks or the like, so that the pickling area is quickly accessible to eliminate the fault thanks to the quick-open lid.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird nachfolgend beschreiben. Es zeigt:An embodiment of the invention is shown in the drawing and is described below. It shows:
Fig. 1 einen Querschnitt in Längsrichtung durch die erfindungsgemäße Anlage,1 shows a cross section in the longitudinal direction through the system according to the invention,
Fig. 2 einen Querschnitt im Bereich des Zentrums des Behandlungskanals undFig. 2 shows a cross section in the region of the center of the treatment channel and
Fig. 3 eine Draufsicht auf die Anlage gemäß Fig. 1 und 2.3 is a plan view of the system according to FIGS. 1 and 2.
In den Zeichnungsfiguren ist die Anlage jeweils stark vereinfacht dargestellt, um das Prinzip erläutern zu können. In Fig. 1 ist mit 1 das zu behandelnde Band bezeichnet, das in Pfeilrichtung die Anlage durchläuft. Diese besteht aus einem Behälter 2, der durch einen Dekkel 3 abgeschlossen wird. Wie in Fig. 2 erkennbar, ist der Deckel 3 seitlich mit einer Flüssigkeitsdichtung abgedichtet.The system is shown in a very simplified form in the drawing figures in order to explain the principle. In Fig. 1, 1 denotes the band to be treated, which passes through the system in the direction of the arrow. This consists of a container 2, which is closed by a lid 3. As can be seen in Fig. 2, the cover 3 is laterally sealed with a liquid seal.
In Fig. 1 ist der erfindungsgemäße Behandlungskanal mit 4 bezeichnet Dieser wird durch den Boden des Behälters, die in Fig. 2 erkennbaren Behandlungskanal seitenwände 5 und den Zwischendeckel 6 nach vier Seiten begrenzt, wobei der Zwischendecke! 6 höhenverstellbar, wie bei 7 angedeutet, am Behälterdeckel 3 aufgehängt ist. Zwischen den Behandlungskanalwänden 5 und dem Zwischendeckel 6 kann ein geringes Spie vorhanden sein. Der erfindungsgemäße Behandlungskanal weist im Bodeπbereich quer zur Bandlaufrichtung angeordnete Gleit- oder Flüssigkeitsleitsteine 8 auf, die einerseits das Band 1 nach unten abstützen und andererseits der Turbulenzbildung der Behandlungsflüssigkeit dienen. Die Behandlungsflüssigkeit wird über Düsenbalken 9 und 10 zugeführt, wobei am Einlauf ein Düsenbalken 9 und am Auslauf zwei Düsenbalken 10, letztere jeweils ober- und unterhalb des Bandes, vorgesehen sind. Die Düsenbalken werden über ein Pumpensystem von einem Vorratsbehälter11 mit der Behandlungsflüssigkeit beschickt, die gegebenenfalls zusätzlich seitlich, wie bei 12 angedeutet, unmittelbar in den Kanal einleitbar ist.In Fig. 1, the treatment channel according to the invention is designated 4 This is limited by the bottom of the container, the treatment channel side walls 5 and the intermediate cover 6, which can be seen in FIG. 2, on four sides, the intermediate ceiling! 6 adjustable in height, as indicated at 7, is suspended from the container lid 3. There may be a small amount of space between the treatment channel walls 5 and the intermediate cover 6. The treatment channel according to the invention has sliding or liquid guide stones 8 arranged transversely to the strip running direction in the bottom region, which on the one hand support the strip 1 downwards and on the other hand serve to form turbulence of the treatment liquid. The treatment liquid is supplied via nozzle bars 9 and 10, one nozzle bar 9 at the inlet and two nozzle bars 10 at the outlet, the latter above and below the belt, respectively. The nozzle bars are fed with the treatment liquid from a storage container 11 via a pump system, which can optionally also be introduced laterally, as indicated at 12, directly into the channel.
Wie erkennbar, ist der Düsenstrahl des Behandlungsmedium der Düsenbalken 9 und 10 in einem flachen Winkel zum Band gerichtet und zwar vom Düsenbalken 9 in Bandlaufrichtung und von den Düsenbalken 10 in Gegenbandlaufrichtung. Dadurch entsteht innerhalb des Behandlungskrnals 4 eine starke Turbulenz, die im unteren Bereich des Bandes duech die Flüsslgkeitsleitsteine 8 verstärkt wird. Durch den hohen Flüssigkeitsdruck des Behandlungsmediums wird im Ein- und Auslaufbereich des Behandlungskanals 4 durch die Flüssigkeit selbst eine dynamische Dichtung gebildet, so daß nur wenig Behandlungsflüssigkeit aus diesem Bereich in die Sammelräume 14 zurückläuft. Die Sammelräume 14 stehen jedoch mit Ablaufrinnen 15 in Verbindung, die seitlich außerhalb des Behandlungskanals im Behälter vorgesehen sind und denen das Behaanlungsmedium über den Ablauf 13 im Zentrum des Behandlungskanals zugeführt wird. Von dort aus gelangt das Behandlungsmedium über einen Rücklauf zurück zum Vorratsbehälter 11.As can be seen, the nozzle jet of the treatment medium of the nozzle bars 9 and 10 is directed at a flat angle to the belt, namely from the nozzle bar 9 in the belt running direction and from the nozzle bar 10 in the counter-belt running direction. This creates a strong turbulence within the treatment cranium 4, which is increased in the lower region of the band due to the liquid guide stones 8. Due to the high liquid pressure of the treatment medium, a dynamic seal is formed in the inlet and outlet area of the treatment channel 4 by the liquid itself, so that only a small amount of treatment liquid runs back into the collecting spaces 14 from this area. However, the collecting spaces 14 are connected to drainage channels 15, which are provided laterally outside the treatment channel in the container and to which the treatment medium is supplied via the drainage 13 in the center of the treatment channel. From there, the treatment medium returns to the reservoir 11 via a return.
Wie in Fig. 3 in der Draufsicht erkennbar, können seitlich an den Behandlungskanalseitenwänden 5 Leiteinrichtungen 16 vorgesehen sein, durch die das über den Düsenbalken 9 einströmende Behandlungsmedium etwa quer zur Bandlaufrichtung geleitet wird. Dadurch entstehen auch unterhalb des Bandes zwischen den Gleit- und Flüssigkeitsleitsteinen die gewünschten Turbulenzen. As can be seen in the top view in FIG. 3, guide devices 16 can be provided on the side of the treatment channel side walls 5, through which the treatment medium flowing in via the nozzle bar 9 is guided approximately transversely to the strip running direction. This creates the desired turbulence below the belt between the sliding and liquid guide stones.

Claims

Patentansprüche Claims
1. Anlage zur Oberflächenbehandlung von kontinuierlich durchlaufenden Bändern, Insbesondere Beizanlage, bei der das Band einen horizontal angeordneten geschlossenen Behandlungskanal in Längsrichtung durchläuft, der Innerhalb eines den Behandlungskanal umschließenden, durch einen Deckel abgeschlossenen Behälters angeordnet Ist, in den das dem Behandlungskanal ein- bzw. auslaufseitig zugeführte Behandlungsmedium ableitbar Ist, dadurch gekennzeichnet, daß der Behandlungskanal (4) durch den Boden des Behälters (2), die auf diesem angeordneten Behandlungskanalseitenwände (5) und einen Zwischendeckel (6) an vier Seiten begrenzt ist, daß zwischen den Behandlungskanalseitenwänden (5) und den Behälterinnenwänden Ablaufrinnen (15) gebildet werden, denen das gleichzeitig ein- und auslaufseitig an den Behandlungskanalenden eingedüste Behandlungsmedium über zentrale in den Behandlungskanalseitenwänden vorgesehene Öffnungen zuleitbar ist und daß die Ablaufrinnen (15) mit Sammelräumen (14) verbunden sind, über die das Behandlungsmedium einem separat angeordneten Vorratsbehälter zuleitbar Ist. 1. Plant for the surface treatment of continuously moving belts, in particular pickling plant, in which the belt runs through a horizontally arranged closed treatment channel in the longitudinal direction, which is arranged inside a container enclosing the treatment channel and closed by a lid, into which the treatment channel Treatment medium supplied on the outlet side can be discharged, characterized in that the treatment channel (4) is delimited on four sides by the bottom of the container (2), the treatment channel side walls (5) arranged on this and an intermediate cover (6), that between the treatment channel side walls (5 ) and the inner walls of the drainage channels (15) are formed, to which the treatment medium injected on the inlet and outlet sides of the treatment channel ends can be fed via central openings provided in the side walls of the treatment channel and that the drainage channels (15) with collecting channels rooms (14) are connected, via which the treatment medium can be fed to a separately arranged storage container.
2. Anlage nach Anspruch 1, dadurch gekennzeichnet, daß der Zwischendeckel (6) am Behälterdeckel (5) befestigt ist und mit Spiel (7) auf den Behandlungskanalseitenwänden aufliegt.2. Plant according to claim 1, characterized in that the intermediate cover (6) on the container cover (5) is attached and with play (7) rests on the treatment channel side walls.
3. Anlage nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Behandlungsmedium - wie bekannt - über Düsenbalken eingedüst wird, von denen einlaufseitig einer (9) und auslaufseitig zwei (10) vorgesehen sind.3. Plant according to claim 1 and 2, characterized in that the treatment medium - as is known - is injected via nozzle bars, one of which is provided on the inlet side (9) and two (10) on the outlet side.
4. Anlage nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das Band (1) über am Boden des Behandlungskanals (4) quer zur Bandlaufrichtung angeordnete Gleit- und Flüssigkeitsleitsteine (8) geführt ist.4. Plant according to claim 1 to 3, characterized in that the band (1) on the bottom of the treatment channel (4) arranged transversely to the belt running direction sliding and liquid guide stones (8).
5. Anlage nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß innerhalb des Behandlungskanals (4) an den Behandlungskanalseitenwänden (5) oder im Bereich der Behandlungskanalseitenwände (5) etwa quer zum Band den Behandlungsflüssigkeitsstrom leitende Führungssteine oder -bleche (16) angeordnet sind.5. Plant according to claim 1 to 4, characterized in that within the treatment channel (4) on the treatment channel side walls (5) or in the region of the treatment channel side walls (5) approximately transverse to the tape, the treatment liquid flow conducting guide stones or sheets (16) are arranged.
6. Anlage nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß als Inipulsgeber für die Turbulenz unter dem Band zusätzliche seitliche Eindüsungen (12) für das Behandlungsmedium vorgesehen sind. 6. Plant according to claim 1 to 5, characterized in that additional injectors (12) for the treatment medium are provided as Inipulsgeber for the turbulence under the belt.
EP87905594A 1986-08-29 1987-08-28 Installation for surface treatment of continuous-flow strip, in particular degreasing installation Expired - Lifetime EP0323467B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3629894 1986-08-29
DE19863629894 DE3629894A1 (en) 1986-08-29 1986-08-29 SYSTEM FOR THE SURFACE TREATMENT OF CONTINUOUSLY CONTINUOUS TAPES, IN PARTICULAR BEATING SYSTEM

Publications (2)

Publication Number Publication Date
EP0323467A1 true EP0323467A1 (en) 1989-07-12
EP0323467B1 EP0323467B1 (en) 1991-04-03

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Application Number Title Priority Date Filing Date
EP87905594A Expired - Lifetime EP0323467B1 (en) 1986-08-29 1987-08-28 Installation for surface treatment of continuous-flow strip, in particular degreasing installation

Country Status (11)

Country Link
US (1) US4928717A (en)
EP (1) EP0323467B1 (en)
JP (1) JP2620866B2 (en)
KR (1) KR940009678B1 (en)
CN (1) CN1021976C (en)
AU (1) AU7872887A (en)
DD (1) DD266813A5 (en)
DE (2) DE3629894A1 (en)
FI (1) FI83236C (en)
SU (1) SU1637666A3 (en)
WO (1) WO1988001657A1 (en)

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Also Published As

Publication number Publication date
US4928717A (en) 1990-05-29
KR940009678B1 (en) 1994-10-15
EP0323467B1 (en) 1991-04-03
CN87105844A (en) 1988-03-16
DE3629894A1 (en) 1988-03-03
DE3769154D1 (en) 1991-05-08
FI83236B (en) 1991-02-28
JP2620866B2 (en) 1997-06-18
SU1637666A3 (en) 1991-03-23
DE3629894C2 (en) 1990-10-31
AU7872887A (en) 1988-03-24
KR880701794A (en) 1988-11-05
FI890716A (en) 1989-02-15
FI890716A0 (en) 1989-02-15
CN1021976C (en) 1993-09-01
DD266813A5 (en) 1989-04-12
WO1988001657A1 (en) 1988-03-10
JPH01501009A (en) 1989-04-06
FI83236C (en) 1991-06-10

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