EP0949355B1 - Housed pickling apparatus - Google Patents

Housed pickling apparatus Download PDF

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Publication number
EP0949355B1
EP0949355B1 EP99890108A EP99890108A EP0949355B1 EP 0949355 B1 EP0949355 B1 EP 0949355B1 EP 99890108 A EP99890108 A EP 99890108A EP 99890108 A EP99890108 A EP 99890108A EP 0949355 B1 EP0949355 B1 EP 0949355B1
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EP
European Patent Office
Prior art keywords
air feed
air
pickling apparatus
pickling
sluice gate
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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.)
Revoked
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EP99890108A
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German (de)
French (fr)
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EP0949355A1 (en
Inventor
Friedrich Dipl.-Ing. Nerat
Franz Wurm
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Korner Chemieanlagenbau GmbH
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Korner Chemieanlagenbau GmbH
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Priority claimed from AT23098U external-priority patent/AT2670U1/en
Priority claimed from AT43498U external-priority patent/AT2671U1/en
Application filed by Korner Chemieanlagenbau GmbH filed Critical Korner Chemieanlagenbau GmbH
Priority to AT99890108T priority Critical patent/ATE256766T1/en
Publication of EP0949355A1 publication Critical patent/EP0949355A1/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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material

Definitions

  • the invention relates to a housed, with permanent Vacuum pickling line with at least one Pickling bath, with at least one lock gate in the enclosure for the introduction and removal of pickling material and an air supply and a suction.
  • DE-A-36 35 525 a system for pickling is disclosed where several pickling tanks side by side in one Installation room can be set up, which at the same time as serves additional treatment basin and one not tight cabin is put over it.
  • the revealed plant cabin is equipped with a suction system kept under vacuum by the difference the suction quantity and the permanently open inflow and formed Curtains. Furthermore, the system cabin has one their entire length slit through which the Operating lever for the workpiece carrier for the to be treated Workpieces is guided. This slot is with one Provide cover that have individual recesses, which enable the workpiece carrier to be raised and lowered. With continuous extraction of a certain exit area is produced. Closing the in and Outlet openings are made by apron-like strips Air volume leads to a tracking of air.
  • the object of the invention is to create a housed Pickling line, which has the disadvantages of known pickling lines or pre-treatments do not adhere and both in environmental and economically a safe one and ensure simple operation.
  • the object is achieved according to the invention in that that the lock gate is designed as a sliding gate and that the air supply is arranged in the area of the sliding gate is.
  • the pickling plant By arranging the air supply in the area of Sliding gate is used in cooperation with the suction the lock gate opening towards the inside of the room the pickling plant is an essentially turbulence-free directed one Flow generated before, during and after opening of a sliding gate the inflow of the supply air in the same Direction supported.
  • the arrangement of the suction points is included not critical; you can drive to a lock gate, the regulation of the vacuum in the pickling line he follows.
  • the arrangement of the suction points is included not critical; they can be at a lock gate opposite But also place at any other Desired positions of the pickling system can be provided. The Formation of an inward flow in the on The area adjacent to the lock gate remains unaffected.
  • Another feature of the invention is that at the bottom End of a lock gate opening a substantially horizontal, inwardly projecting plate is arranged.
  • An embodiment of the invention is that the air supply is integrated in the sliding gate.
  • the air supply is a supply air blind. So that's up very simple way of inflowing the supply air while holding it back the outflow of air from the pickling or pre-treatment room guaranteed.
  • the pickling plant is further according to the invention characterized in that the lock gate opening laterally from inside protruding plates is limited. This will an inwardly extending tunnel is formed by means of which in a safety-enhancing manner is a possible one Emission of emissions through the open lock gate is effectively prevented.
  • Another embodiment of the enclosed pickling plant of the type mentioned at the bottom an essentially horizontal, arranged inwardly protruding plate, according to the invention in that in or within the enclosure on both sides of the lock gate opening, essentially extending diagonally across the height of the lock gate internally aligned, facing air supply nozzles are arranged.
  • the air supply nozzles at an angle ⁇ between 25 ° and 60 ° aligned to the lock gate level. Furthermore, the invention provided that the flow lines from air exiting the air supply nozzles in the area above the Cross the plate located under the lock gate opening. This is a reliable prevention in an optimal way of emissions leakage reached. According to the invention are the air jets emerging from the air supply nozzles aligned essentially horizontally.
  • a further embodiment of the invention is thereby characterized in that the air supply nozzles in essentially vertically aligned air supply ducts are arranged, with which a particularly simple and effective formation of a Supply air curtain inside the lock gate opening achievable and thus the inflow in a very simple manner the supply air while preventing the outflow of air the pickling or pre-treatment room is guaranteed.
  • Another embodiment of the invention exists in that the air supply duct at its upper end with the enclosure ceiling is sealed.
  • a feature of the invention is also that the air supply channels arranged on both sides of the lock gate opening are connected below the plate, an air supply line in the connection of the air supply channels opens.
  • Air supply nozzle (s) provided.
  • the air can run across the entire width or just in the upper corners of the lock opening in small quantities to be blown.
  • Fig. 1 is a housed Pickling plant without an enclosed ceiling with closed Lock gates
  • Fig. 2 with a housed pickling plant an open and a closed lock gate without integrated air supply
  • Fig. 3 shows an embodiment a lock gate opening
  • Fig. 4 shows another embodiment a lock gate opening
  • Fig. 5 shows a third embodiment show a lock gate opening.
  • the pickling system shown in FIGS. 1 and 2 or Pretreatment includes enclosure walls 1, which advantageously built from acid-proof wall panels and to the emission room are laminated diffusion-tight. As well there is the one not shown for reasons of clarity Acid-resistant panel ceiling.
  • lock gates 3, 4 arranged, one of which preferably as an entrance gate and the other serves as an exit gate for the pickling material.
  • the Lock gates 3, 4 are advantageously as sliding gates educated.
  • the pickling material is not shown Crane retracted and extended, being for the crane ropes on which the pickling material hangs, sealed by special sealing systems Bushings in the ceiling and each provided in the upper limit of a lock gate opening 5 are.
  • the lock gates 3, 4 supply air blinds 6 integrated.
  • air blinds 6 are on one or Exhaust venetian blinds 7 arranged in several places. If too additional air inlets at other parts of the enclosure can be provided, so in the under permanent Vacuum pickling plant by arranging the Supply air blinds 6 in the lock gates 3, 4 and Exhaust blinds 7, for example in the opposite Wall 1 of the housing a pronounced directional air flow from the lock gates 3, 4 to the exhaust air blinds 7 generated.
  • lock gates 3, 4 Supply air blinds for supplying air to the pickling system equip.
  • the lock gates 3, 4 can also be used appropriate air flaps or the supply air can also only be provided by in lock gates 3, 4 Inflow openings; it is essential that the air supply is integrated in the lock gate 3, 4.
  • While a lock gate 3, 4 is open, from outside additionally by means of one or more, in the upper one Third of the lock gate opening 5 arranged air supply nozzles 10 air is blown in a small amount. Thereby there is also a partial outflow of air from the pickling or pre-treatment room prevented.
  • the plates 8 and 11 form one tunnel-like boundary protruding from the interior a lock gate opening 5, as can be seen from FIG. 4 is.
  • Air supply duct arranged in the form of a tube 12.
  • the Tube 12 is with one extending along its length Blow slot 13 provided, from which the air supplied emerges diagonally inwards facing each other. This occurs the supplied air at an angle ⁇ of 25 ° to 60 ° Lock gate level from the blow slots 13.
  • air jets 14 emerging from the blow slots are aligned essentially horizontally.
  • the crossing points the exiting from the blow slots 13 In any case, air jets 14 must be above plate 8 his.
  • the tubes 12 can either from above or from below be fed with air, either fresh air or air can be out of the drying oven. Depending on whether from above or If air is supplied from below, the situation is different To close the end of the tube 12.
  • the two pipes 12 can either be on a shared line that connects to both Pipes 12 can be fed branched or each pipe 12 can can be supplied with air separately.
  • the tubes 12 are on the one hand with the ceiling of the housing, on the other hand connected to the plate 8 so that achieved a mechanical seal up and down becomes.
  • the air can pass through that provided in the tubes 12 Blow-in openings blown in by a separate fan become.
  • the supplied air can also be by-pass air from Be a drying oven.
  • the air inlets can be the blow slots 13, but just as well over the length the tubes 12 are arranged bores.
  • air can additionally flow from be blown outside.

Description

Die Erfindung betrifft eine eingehauste, bei permanentem Unterdruck arbeitende Beizanlage mit mindestens einem Beizbad, mit mindestens einem Schleusentor in der Einhausung zur Ein- und Ausbringung von Beizgut sowie einer Luftzuführung und einer Absaugung.The invention relates to a housed, with permanent Vacuum pickling line with at least one Pickling bath, with at least one lock gate in the enclosure for the introduction and removal of pickling material and an air supply and a suction.

Es ist allgemein bekannt, daß sich die Beizwirkung (Metallbeizen) exponentiell mit der Temperatur verbessert. Durch Arbeiten bei angehobenen Temperaturen ist u. a. auch eine wesentliche Verkürzung der Beizzeiten zu erreichen.It is generally known that the pickling effect (Metal pickling) improved exponentially with temperature. Working at elevated temperatures may a. also to achieve a significant reduction in pickling times.

Allerdings war es bisher wegen sehr starker Emissionen der Beizmedien (HCl, H2SO4, Mischsäuren) aus umwelttechnischen und wirtschaftlichen Aspekten, beispielsweise im Hinblick auf Korrosion, nur möglich, Beizbäder auf ca. höchstens 25 - 30° C zu temperieren.However, because of very strong emissions from the pickling media (HCl, H 2 SO 4 , mixed acids) from environmental and economic aspects, for example with regard to corrosion, it was only possible to temper pickling baths to a maximum of approx. 25 - 30 ° C.

Um eine Möglichkeit zu schaffen, Beizbäder bei höheren Temperaturen zu betreiben, wurden eingehauste Beizanlagen bzw. eingehauste Vorbehandlungen entwickelt. Dadurch soll verhindert werden, daß Emissionen aus dem Bereich des Beiz- bzw. Vorbehandlungsraums austreten. Eine Voraussetzung hierfür ist jedoch, daß die Beiz- bzw. Vorbehandlungsanlage so konzipiert ist, daß ein permanenter Unterdruck herrscht. Unter dessen Einwirkung sollen die Emissionen am Austreten aus der Beiz- bzw. Vorbehandlungsanlage gehindert werden. Dies wird durch eine kontinuierliche Absaugung der Beizanlage bzw. Vorbehandlungsraums realisiert.To create a possibility of pickling baths at higher Operating pickling systems became housed pickling plants or housed pretreatments developed. This is supposed to prevent emissions from the area of pickling or pre-treatment room. A requirement this is, however, that the pickling or pretreatment system is designed so that there is a permanent negative pressure. Under its influence, the emissions are said to be exiting be prevented from the pickling or pre-treatment system. This is achieved by continuously extracting the pickling system or pre-treatment room realized.

Der kritische Zeitpunkt bei diesem bekannten Beizsystem ist, wenn neue Gehänge in die Beizanlage gefördert werden und dabei ein Tor in die Beizanlage geöffnet werden muß. Die gleiche Situation ergibt sich auch beim Ausführen von Gehängen, wenn kein Trockenofen vorhanden ist.The critical moment in this known pickling system is when new hangers are conveyed into the pickling line open a gate into the pickling line got to. The same situation arises when executing of hangers when there is no drying oven.

Bei den herkömmlichen Anordnungen der Zu- und Abluftpositionen trat der Nachteil auf, daß trotz Absaugung, insbesondere während der kalten Jahreszeit, Emissionen austreten können. In the conventional arrangements of the feed and Exhaust air positions suffered from the disadvantage that despite extraction, especially during the cold season, emissions can exit.

In der DE-A-36 35 525 ist eine Anlage zum Beizen geoffenbart bei der mehrere Beizbehälter nebeneinander in einem Aufstellraum aufgestellt werden, der gleichzeitig auch als zusätzliches Behandlungsbecken dient und über den eine nicht dichte Kabine darübergestülpt wird.In DE-A-36 35 525 a system for pickling is disclosed where several pickling tanks side by side in one Installation room can be set up, which at the same time as serves additional treatment basin and one not tight cabin is put over it.

Dabei wird die geoffenbarte Anlagekabine über eine Absaugung unter Unterdruck gehalten, der durch die Differenz der Absaugmenge und der permanent offenen Zu- und gebildete Vorhänge. Desweiteren weist die Anlagenkabine einen über ihre gesamte Länge verlaufenden Schlitz auf, durch den der Bedienhebel für den Werkstück-Träger für die zu behandelnden Werkstücke geführt wird. Dieser Schlitz ist mit einer Abdeckung versehen, die einzelne Ausnehmungen aufweisen, die das Heben und Senken des Werkstück-Trägers ermöglichen. Bei einer kontinuierlichen Absaugung einer bestimmten Ausfahrtbereiche erzeugt wird. Das Verschließen der Ein- und Austrittsöffnungen erfolgt durch schürzenartige aus Streifen Luftmenge kommt es zu einer Nachführung von Luft.The revealed plant cabin is equipped with a suction system kept under vacuum by the difference the suction quantity and the permanently open inflow and formed Curtains. Furthermore, the system cabin has one their entire length slit through which the Operating lever for the workpiece carrier for the to be treated Workpieces is guided. This slot is with one Provide cover that have individual recesses, which enable the workpiece carrier to be raised and lowered. With continuous extraction of a certain exit area is produced. Closing the in and Outlet openings are made by apron-like strips Air volume leads to a tracking of air.

Aufgabe der Erfindung ist die Schaffung einer eingehausten Beizanlage, der die Nachteile bekannter Beizanlagen oder Vorbehandlungen nicht anhaften und sowohl in umwelttechnischer und wirtschaftlicher Hinsicht einen sicheren und einfachen Betrieb gewährleisten.The object of the invention is to create a housed Pickling line, which has the disadvantages of known pickling lines or pre-treatments do not adhere and both in environmental and economically a safe one and ensure simple operation.

Die Aufgabe wird gemäß der Erfindung dadurch gelöst, daß das Schleusentor als Schiebetor ausgebildet ist und daß die Luftzuführung im Bereich des Schiebetors angeordnet ist.The object is achieved according to the invention in that that the lock gate is designed as a sliding gate and that the air supply is arranged in the area of the sliding gate is.

Durch die Anordnung der Luftzuführung im Bereich des Schiebetors wird im Zusammenwirken mit der Absaugung im an das Schleusentoröffnung nach innen anschließenden Raumes der Beizanlage eine im wesentlichen turbulenzfreie gerichtete Strömung erzeugt, die vor, beim und nach dem Öffnen eines Schiebetors das Einströmen der Zuluft in gleicher Richtung unterstützt. Dazu ist es notwendig, daß bei geöffnetem Schiebetor der Absaugventilator mit erhöhter Leistung fährt, wobei die Regelung über den Unterdruck in der Beizanlage erfolgt. Die Anordnung der Absaugstellen ist dabei nicht kritisch; sie können an einer einem Schleusentor gefährt, wobei die Regelung über den Unterdruck in der Beizanlage erfolgt. Die Anordnung der Absaugstellen ist dabei nicht kritisch; sie können an einer einem Schleusentor gegenüberliegenden Stelle aber ebenso an irgendwelchen anderen gewünschten Stellen der Beizanlage vorgesehen sein. Die Ausbildung einer nach innen gerichteten Strömung im an ein Schleusentor anschließenden Bereich bleibt davon unberührt.By arranging the air supply in the area of Sliding gate is used in cooperation with the suction the lock gate opening towards the inside of the room the pickling plant is an essentially turbulence-free directed one Flow generated before, during and after opening of a sliding gate the inflow of the supply air in the same Direction supported. For this it is necessary that when the Exhaust fan sliding gate with increased performance drives, the regulation on the vacuum in the pickling plant he follows. The arrangement of the suction points is included not critical; you can drive to a lock gate, the regulation of the vacuum in the pickling line he follows. The arrangement of the suction points is included not critical; they can be at a lock gate opposite But also place at any other Desired positions of the pickling system can be provided. The Formation of an inward flow in the on The area adjacent to the lock gate remains unaffected.

Ein Merkmal der Erfindung ist weiters, daß am unteren Ende einer Schleusentoröffnung eine im wesentlichen horizontale, nach innen abstehende Platte angeordnet ist.Another feature of the invention is that at the bottom End of a lock gate opening a substantially horizontal, inwardly projecting plate is arranged.

Durch die Anordnung der nach innen abstehenden Platte am unteren Ende einer Schleusentoröffnung wird eine Art "Strömungstisch" geschaffen, wodurch eine längere horizontale Einströmung der kalten Zuluft sichergestellt ist.By arranging the plate protruding inwards at the lower end of a lock gate opening a kind "Flow table" created, creating a longer horizontal Inflow of cold supply air is ensured.

Eine Ausführungsform der Erfindung besteht darin, daß die Luftzuführung im Schiebetor integriert ist.An embodiment of the invention is that the air supply is integrated in the sliding gate.

Ein weiteres Merkmal der Erfindung besteht darin, daß die Luftzuführung eine Zuluftjalousie ist. Damit ist auf sehr einfache Weise das Einströmen der Zuluft unter Hintanhaltung des Ausströmens von Luft aus dem Beiz- oder Vorbehandlungsraum gewährleistet.Another feature of the invention is that the air supply is a supply air blind. So that's up very simple way of inflowing the supply air while holding it back the outflow of air from the pickling or pre-treatment room guaranteed.

Die Beizanlage ist gemäß der Erfindung ferner dadurch gekennzeichnet, daß die Schleusentoröffnung seitlich von nach innen abstehenden Platten begrenzt ist. Dadurch wird ein nach innen sich erstreckender Tunnel gebildet, mittels welchem in noch sicherheitserhöhender Weise ein allfälliges Ausströmen von Emissionen durch das geöffnete Schleusentor wirksam verhindert wird.The pickling plant is further according to the invention characterized in that the lock gate opening laterally from inside protruding plates is limited. This will an inwardly extending tunnel is formed by means of which in a safety-enhancing manner is a possible one Emission of emissions through the open lock gate is effectively prevented.

Eine andere Ausführungsform der eingehausten Beizanlage der eingangs genannten Art, bei der am unteren Ende einer Schleusentoröffnung eine im wesentlichen horizontale, nach innen abstehende Platte angeordnet ist, besteht erfindungsgemäß darin, daß in oder innerhalb der Einhausung beidseits der Schleusentoröffnung, sich im wesentlichen über die Höhe des Schleusentors erstreckende, schräg nach innen ausgerichtete, einander zugekehrte Luftzufuhrdüsen angeordnet sind.Another embodiment of the enclosed pickling plant of the type mentioned at the bottom an essentially horizontal, arranged inwardly protruding plate, according to the invention in that in or within the enclosure on both sides of the lock gate opening, essentially extending diagonally across the height of the lock gate internally aligned, facing air supply nozzles are arranged.

Durch diese Anordnung von Luftzufuhrdüsen wird innerhalb der Einhausung im Bereich des Schleusentors ein nach innen gerichteter Luftschleier gebildet, der zuverlässig ein Austreten von Emissionen verhindert, wenn das Schleusentor geöffnet wird. Dabei gewährleistet die unter der Schleusentoröffnung angeordnete horizontale, nach innen abstehende, einen sogenannten "Strömungstisch" bildende Platte, daß emissionsbeladene Luft aus dem Einhausungsinneren den Luftschleier unterfährt und durch die Schleusentoröffnung nach außen gelangt.This arrangement of air supply nozzles inside after the enclosure in the area of the lock gate internal air curtain formed, which is reliable prevents emissions from escaping when the lock gate is opened. The guarantees under the Lock gate opening arranged horizontally, inwards protruding, forming a so-called "flow table" Plate that polluted air from inside the house passes under the air curtain and through the lock gate opening got outside.

Die erfindungsgemäße Anordnung der Luftzufuhrdüsen bringt aber auch den Effekt mit sich, daß durch die sehr effiziente Wirksamkeit des gebildeten Luftschleiers das Vakuum in der Einhausung erniedrigt werden kann, wodurch auch eine Energieersparnis errreicht werden kann.The arrangement of the air supply nozzles according to the invention but also brings with it the effect that the very efficient effectiveness of the air curtain formed Vacuum in the housing can be reduced, which energy savings can also be achieved.

Gemäß einer weiteren Ausgestaltung der Erfindung sind die Luftzufuhrdüsen in einem Winkel α zwischen 25° und 60° zur Schleusentorebene ausgerichtet. Desweiteren ist erfindungsgemäß vorgesehen, daß sich die Strömungslinien der aus den Luftzufuhrdüsen austretenden Luft im Bereich über der unter der Schleusentoröffnung angeordneten Platte kreuzen. Damit wird in optimaler Weise eine zuverlässige Unterbindung des Austritts von Emissionen erreicht. Erfindungsgemäß sind die aus den Luftzufuhrdüsen austretenden Luftstrahlen im wesentlichen horizontal ausgerichtet. According to a further embodiment of the invention the air supply nozzles at an angle α between 25 ° and 60 ° aligned to the lock gate level. Furthermore, the invention provided that the flow lines from air exiting the air supply nozzles in the area above the Cross the plate located under the lock gate opening. This is a reliable prevention in an optimal way of emissions leakage reached. According to the invention are the air jets emerging from the air supply nozzles aligned essentially horizontally.

Eine weitere Ausgestaltung der Erfindung ist dadurch gekennzeichnet, daß die Luftzufuhrdüsen in im wesentlichen vertikal ausgerichteten Luftzufuhrkanälen angeordnet sind, womit eine besonders einfache und wirksame Bildung eines Zufuhrluftschleiers innerhalb der Schleusentoröffnung erzielbar und damit auf sehr einfache Weise das Einströmen der Zuluft unter Hintanhaltung des Ausströmens von Luft aus dem Beiz- oder Vorbehandlungsraum gewährleistet ist.A further embodiment of the invention is thereby characterized in that the air supply nozzles in essentially vertically aligned air supply ducts are arranged, with which a particularly simple and effective formation of a Supply air curtain inside the lock gate opening achievable and thus the inflow in a very simple manner the supply air while preventing the outflow of air the pickling or pre-treatment room is guaranteed.

Weitere vorteilhafte Ausgestaltungen der Erfindung bestehen darin, daß die Luftzufuhrdüsen als sich im wesentlichen über die Länge des Luftzufuhrkanals erstreckender Schlitz ausgebildet ist oder im wesentlichen über die Länge des Luftzufuhrkanals übereinander angeordnete Bohrungen sind.Further advantageous embodiments of the invention consist in that the air supply nozzles as essentially extending over the length of the air supply duct Slit is formed or substantially over the length of the air supply duct bores arranged one above the other are.

Eine weitere Ausgestaltung der Erfindung besteht darin, daß der Luftzufuhrkanal an seinem oberen Ende mit der Einhausungsdecke dichtend abgeschlossen ist.Another embodiment of the invention exists in that the air supply duct at its upper end with the enclosure ceiling is sealed.

Ein Merkmal der Erfindung besteht ferner darin, daß die beidseits der Schleusentoröffnung angeordneten Luftzufuhrkanäle unterhalb der Platte miteinander verbunden sind, wobei eine Luftzufuhrleitung in die Verbindung der Luftzufuhrkanäle einmündet. Bei dieser einfachen konstruktiven Ausgestaltung der Luftzufuhrkanäle fällt einerseits eine Abdichtung derselben an ihren unteren Enden weg und anderseits ist nur eine Luftzufuhrleitung erforderlich.A feature of the invention is also that the air supply channels arranged on both sides of the lock gate opening are connected below the plate, an air supply line in the connection of the air supply channels opens. With this simple constructive Design of the air supply channels falls on the one hand Sealing them away at their lower ends and on the other only one air supply line is required.

Gemäß einer weiteren Ausgestaltung der Erfindung ist (sind) zusätzlich eine oder mehrere, von außen gegen den oberen Bereich der Schleusentoröffnung gerichtete Luftzufuhrdüse(n) vorgesehen.According to a further embodiment of the invention (are) one or more, from the outside against the upper area of the lock gate opening Air supply nozzle (s) provided.

Während ein Schleusentor geöffnet ist, wird von außen zusätzlich, vorzugsweise im oberen Drittel der Schleusentoröffnung, Luft zugeblasen, die ein partielles Ausströmen von mit Emissionen der Beizmedien beladener Luft aus der Beizanlage oder Vorbehandlung jedenfalls verhindert. Die Luft kann über die ganze Breite oder auch nur in den oberen Ecken der Schleusenöffnung in geringen Mengen zugeblasen werden. While a lock gate is open, the outside additionally, preferably in the upper third of the Lock gate opening, air blown in, which is a partial Outflow of air laden with emissions from the pickling media in any case prevented from the pickling line or pre-treatment. The air can run across the entire width or just in the upper corners of the lock opening in small quantities to be blown.

In der Zeichnung ist der Gegenstand der Erfindung schematisch näher veranschaulicht, worin Fig. 1 eine eingehauste Beizanlage ohne Einhausungsdecke mit geschlossenen Schleusentoren, Fig. 2 eine eingehauste Beizanlage mit einem geöffneten und einem geschlossenen Schleusentor ohne integrierte Luftzuführung, Fig. 3 eine Ausführungsform einer Schleusentoröffnung, Fig. 4 eine weitere Ausführungsform einer Schleusentoröffnung und Fig. 5 eine dritte Ausführungsform einer Schleusentoröffnung zeigen.In the drawing, the subject of the invention schematically illustrated in more detail, wherein Fig. 1 is a housed Pickling plant without an enclosed ceiling with closed Lock gates, Fig. 2 with a housed pickling plant an open and a closed lock gate without integrated air supply, Fig. 3 shows an embodiment a lock gate opening, Fig. 4 shows another embodiment a lock gate opening and Fig. 5 shows a third embodiment show a lock gate opening.

Die in Fig. 1 und 2 dargestellte Beizanlage bzw. Vorbehandlung umfaßt Einhausungswände 1, die vorteilhafterweise aus säurefesten Wandpaneelen errichtet und zum Emissionsraum hin diffusionsdicht verlaminiert sind. Ebenso besteht die aus Übersichtlichkeitsgründen nicht dargestellte Decke aus säurefesten Paneelen. In der Beizanlage sind Beizbäder 2 in Einzel- oder Doppelbehältern aus Kunststoff vorliegendenfalls in zweireihiger Aufstellung nebeneinander angeordnet, wobei säure- und alkalienbeständige Flurbodenplatten zur Einhausung und zu den Behältern diffusionsdicht sind.The pickling system shown in FIGS. 1 and 2 or Pretreatment includes enclosure walls 1, which advantageously built from acid-proof wall panels and to the emission room are laminated diffusion-tight. As well there is the one not shown for reasons of clarity Acid-resistant panel ceiling. In the pickling line are pickling baths 2 in single or double containers made of plastic in this case side by side in a double row arranged, being acid and alkali resistant Corridor floor panels for the housing and the containers are diffusion-tight are.

In den Einhausungswänden 1 sind zwei Schleusentore 3, 4 angeordnet, von denen eines vorzugsweise als Einfahrtstor und das andere als Ausfahrtstor für das Beizgut dient. Die Schleusentore 3, 4 sind vorteilhafterweise als Schiebetore ausgebildet. Das Beizgut wird mittels nicht dargestellten Krans ein- und ausgefahren, wobei für die Kranseile, an denen das Beizgut hängt, durch spezielle Dichtsysteme abgedichtete Durchführungen in der Einhausungsdecke und jeweils in der oberen Begrenzung einer Schleusentoröffnung 5 vorgesehen sind.In the housing walls 1 there are two lock gates 3, 4 arranged, one of which preferably as an entrance gate and the other serves as an exit gate for the pickling material. The Lock gates 3, 4 are advantageously as sliding gates educated. The pickling material is not shown Crane retracted and extended, being for the crane ropes on which the pickling material hangs, sealed by special sealing systems Bushings in the ceiling and each provided in the upper limit of a lock gate opening 5 are.

Für die Zuführung von Zuluft in die eingehauste Beizanlage bzw. den Vorbehandlungsraum sind, wie in Fig. 1 dargestellt, in den Schleusentoren 3, 4 Zuluftjalousien 6 integriert. Wie vorliegendenfalls, beispielsweise an der gegenüberliegenden Seite der Einhausung, sind an einer oder mehreren Stellen Abluftjalousien 7 angeordnet. Wenn auch noch weitere Luftzuführungen an anderen Stellen der Einhausung vorgesehen sein können, so wird in der unter permanentem Unterdruck arbeitenden Beizanlage durch Anordnung der Zuluftjalousien 6 in den Schleusentoren 3, 4 und der Abluftjalousien 7 beispielsweise in der gegenüberliegenden Wand 1 der Einhausung eine ausgeprägte gerichtete Luftströmung von den Schleusentoren 3, 4 zu den Abluftjalousien 7 erzeugt.For supplying air to the pickling system or the pretreatment room, as shown in FIG. 1, in the lock gates 3, 4 supply air blinds 6 integrated. As is the case here, for example at the opposite side of the enclosure, are on one or Exhaust venetian blinds 7 arranged in several places. If too additional air inlets at other parts of the enclosure can be provided, so in the under permanent Vacuum pickling plant by arranging the Supply air blinds 6 in the lock gates 3, 4 and Exhaust blinds 7, for example in the opposite Wall 1 of the housing a pronounced directional air flow from the lock gates 3, 4 to the exhaust air blinds 7 generated.

Es ist vorteilhaft, die Schleusentore 3, 4 mit Zuluftjalousien für die Zufuhr von Luft in die Beizanalge auszustatten. Die Schleusentore 3, 4 können aber auch mit entsprechenden Luftklappen versehen werden oder die Zuluft kann auch nur durch in Schleusentoren 3, 4 vorgesehenen Öffnungen einströmen; wesentlich dabei ist, daß die Luftzuführung im Schleusentor 3, 4 integriert ist.It is advantageous to use the lock gates 3, 4 Supply air blinds for supplying air to the pickling system equip. The lock gates 3, 4 can also be used appropriate air flaps or the supply air can also only be provided by in lock gates 3, 4 Inflow openings; it is essential that the air supply is integrated in the lock gate 3, 4.

Wie in Fig. 3 schematisch dargestellt, ist unmittelbar unterhalb der Schleusentoröffnung 5 eine im wesentlichen horizontale, nach innen abstehende Platte 8 angeordnet. Diese bildet an der Innenseite der Einhausung am unteren Ende der Schleusentoröffnung 5 eine Art Strömungstisch, der bei geöffnetem Schleusentor 3, 4 eine länger anhaltende horizontale Einströmung der kalten Zuluft durch die Schleusentoröffnung 5 in Richtung des Pfeiles 9 sicherstellt.As shown schematically in Fig. 3, is immediate one below the lock gate opening 5 essentially horizontal, inwardly projecting plate 8 arranged. This forms on the inside of the housing at the bottom At the end of the lock gate opening 5 a kind of flow table, the with the lock gate 3, 4 open, a longer one horizontal inflow of cold supply air through the lock gate opening 5 in the direction of arrow 9 ensures.

Durch die vorgegebene Strömungsrichtung vom Schleusentor 3, 4 zu den Abluftjalousien 7 in der geschlossenen Einhausung, die beim Öffnen eines Schleusentors 3, 4 im wesentlichen aufrechterhalten bleibt, wenn der Ventilator dann auch mit erhöhter Leistung fährt, und mit Hilfe der am unteren Ende der Schleusentoröffnung 5 angeordneten Platte 8 wird ein einwandfreies Einströmen kalter Luft in die Einhausung gewährleistet. Gleichzeitig werden damit Emissionen von Beizmedien durch das geöffnete Schleusentor wirksam unterbunden.By the given flow direction from the lock gate 3, 4 to the exhaust air blinds 7 in the closed housing, which when opening a lock gate 3, 4 in essentially maintained when the fan then also drives with increased performance, and with the help of the lower end of the lock gate opening 5 arranged plate 8 is a proper inflow of cold air into the housing guaranteed. At the same time, emissions of pickling media effective through the open lock gate prevented.

Während ein Schleusentor 3, 4 geöffnet ist, kann von außen zusätzlich mittels einer oder mehrerer, im oberen Drittel der Schleusentoröffnung 5 angeordneter Luftzufuhrdüsen 10 Luft in geringer Menge zugeblasen werden. Dadurch wird auch ein partielles Ausströmen von Luft aus dem Beiz- bzw. Vorbehandlungsraum verhindert.While a lock gate 3, 4 is open, from outside additionally by means of one or more, in the upper one Third of the lock gate opening 5 arranged air supply nozzles 10 air is blown in a small amount. Thereby there is also a partial outflow of air from the pickling or pre-treatment room prevented.

Um das Einströmen von Luft bei geöffnetem Schleusentor 3, 4 noch zu verbessern bzw. ein Ausströmen von mit Emissionen von Beizmedien belasteter Luft noch wirksamer zu unterbinden, sind zusätzlich zur am unteren Ende der Schleusentoröffnung 5 vorgesehenen Platte 8 auch noch beidseits der Schleusentoröffnung 5 nach innen abstehende Platten 11 angeordnet. Die Platten 8 und 11 bilden so eine gegen den Innenraum abstehende, tunnelartige Begrenzung einer Schleusentoröffnung 5, wie dies aus Fig. 4 ersichtlich ist.The inflow of air with the lock gate open 3, 4 still improve or an outflow of emissions air contaminated with pickling media is even more effective prevent, are in addition to at the bottom of the Lock gate opening 5 provided plate 8 also on both sides the lock gate opening 5 inwardly protruding plates 11 arranged. The plates 8 and 11 form one tunnel-like boundary protruding from the interior a lock gate opening 5, as can be seen from FIG. 4 is.

Wie in Fig. 5 schematisch dargestellt, ist unmittelbar unterhalb der Schleusentoröffnung 5 eine im wesentlichen horizontale, nach innen abstehende Platte 8 angeordnet. Diese bildet an der Innenseite der Einhausung am unteren Ende der Schleusentoröffnung 5 eine Art Strömungstisch, der bei geöffnetem Schleusentor 3, 4 eine länger anhaltende horizontale Einströmung der kalten Zuluft durch die Schleusentoröffnung 5 in Richtung des Pfeiles 9 sicherstellt.As shown schematically in Fig. 5, is immediate one below the lock gate opening 5 essentially horizontal, inwardly projecting plate 8 arranged. This forms on the inside of the housing at the bottom A kind of flow table at the end of the lock gate opening 5, the one with the lock gate 3, 4 open is a longer one horizontal inflow of cold supply air through the lock gate opening 5 in the direction of arrow 9 ensures.

Durch die vorgegebene Strömungsrichtung vom Schleusentor 3, 4 zu den Abluftjalousien 7 in der geschlossenen Einhausung, die beim Öffnen eines Schleusentors 3, 4 im wesentlichen aufrechterhalten bleibt, wenn der Ventilator dann auch mit erhöhter Leistung fährt, und mit Hilfe der am unteren Ende der Schleusentoröffnung 5 angeordneten Platte 8 wird ein einwandfreies Einströmen kalter Luft in die Einhausung gewährleistet. Gleichzeitig werden damit Emissionen von Beizmedien durch das geöffnete Schleusentor wirksam unterbunden.By the given flow direction from the lock gate 3, 4 to the exhaust air blinds 7 in the closed housing, which when opening a lock gate 3, 4 in essentially maintained when the fan then also drives with increased performance, and with the help of the lower end of the lock gate opening 5 arranged plate 8 is a proper inflow of cold air into the housing guaranteed. At the same time, emissions of pickling media effective through the open lock gate prevented.

Beidseits der Schleusentoröffnung 5 ist jeweils ein Luftzufuhrkanal in Form eines Rohres 12 angeordnet. Das Rohr 12 ist mit einem sich über seine Länge hin erstreckenden Blasschlitz 13 versehen, aus dem die zugeführte Luft schräg nach innen einander zugekehrt austritt. Dabei tritt die zugeführte Luft in einem Winkel α von 25° bis 60° zur Schleusentorebene aus den Blasschlitzen 13 aus. There is one on each side of the lock gate opening 5 Air supply duct arranged in the form of a tube 12. The Tube 12 is with one extending along its length Blow slot 13 provided, from which the air supplied emerges diagonally inwards facing each other. This occurs the supplied air at an angle α of 25 ° to 60 ° Lock gate level from the blow slots 13.

Die aus den Blasschlitzen austretenden Luftstrahlen 14 sind im wesentlichen horizontal ausgerichtet. Die Kreuzungspunkte der aus den Blasschlitzen 13 austretenden Luftstrahlen 14 muß dabei jedenfalls über der Platte 8 sein.The air jets 14 emerging from the blow slots are aligned essentially horizontally. The crossing points the exiting from the blow slots 13 In any case, air jets 14 must be above plate 8 his.

Die Rohre 12 können entweder von oben oder von unten mit Luft gespeist werden, die entweder Frischluft oder Luft aus dem Trockenofen sein kann. Je nachdem, ob von oben oder von unten Luft zugeführt wird, ist das entsprechend andere Ende des Rohres 12 zu verschließen. Die beiden Rohre 12 können entweder über eine gemeinsame Leitung, die auf beide Rohre 12 verzweigt gespeist werden oder jedes Rohr 12 kann für sich separat mit Luft versorgt werden.The tubes 12 can either from above or from below be fed with air, either fresh air or air can be out of the drying oven. Depending on whether from above or If air is supplied from below, the situation is different To close the end of the tube 12. The two pipes 12 can either be on a shared line that connects to both Pipes 12 can be fed branched or each pipe 12 can can be supplied with air separately.

Die Rohre 12 sind einerseits mit der Decke der Einhausung, anderseits mit der Platte 8 fix verbunden, so daß eine mechanische Abdichtung nach oben und unten erreicht wird.The tubes 12 are on the one hand with the ceiling of the housing, on the other hand connected to the plate 8 so that achieved a mechanical seal up and down becomes.

In nicht dargestellter Weise können jedoch die beiden Rohre 12 unterhalb der Platte 8 miteinander verbunden sein, wobei eine Luftzufuhrleitung in diesen Verbindungsteil einmündet.In a manner not shown, however, the two Pipes 12 are connected to one another below the plate 8, wherein an air supply line opens into this connecting part.

Die Luft kann durch die in den Rohren 12 vorgesehenen Zu-blasöffnungen von einem eigenen Ventilator eingeblasen werden. Die zugeführte Luft kann aber auch By pass-Luft vom Trockenofen sein. Die Zublasöffnungen können die Blasschlitze 13, aber ebenso gut übereinander über die Länge der Rohre 12 verteilt angeordnete Bohrungen sein.The air can pass through that provided in the tubes 12 Blow-in openings blown in by a separate fan become. The supplied air can also be by-pass air from Be a drying oven. The air inlets can be the blow slots 13, but just as well over the length the tubes 12 are arranged bores.

Mittels Luftzufuhrdüsen 10 kann Luft zusätzlich von außen zugeblasen werden.By means of air supply nozzles 10, air can additionally flow from be blown outside.

Claims (15)

  1. Housed pickling apparatus working under permanently reduced pressure with at least one pickling bath, with at least one sluice gate in the housing for the introduction and extraction of items to be pickled as well as an air feed and an exhaust, characterised in that the sluice gate (3, 4) is constructed as a sliding gate and that the air feed (6) is arranged in the region of the sliding gate (3, 4).
  2. Pickling apparatus according to Claim 1, characterised in that, at the lower end of a sluice gate opening (5), an essentially horizontal plate (8) extending towards the interior is arranged.
  3. Pickling apparatus according to Claim 1 or 2, characterised in that the air feed (6) is integrated in the sliding gate (3, 4).
  4. Pickling apparatus according to Claim 3, characterised in that the air feed (6) is a feed louvre.
  5. Pickling apparatus according to one of Claims 1 to 4, characterised in that the sluice gate opening (5) is limited laterally by inwardly extending plates (11).
  6. Pickling apparatus according to Claim 1 and 2, characterised in that in or within the housing (1) on both sides of the sluice gate opening (5) there are arranged air feed nozzles facing one another directed obliquely towards the interior and extending essentially over the height of the sluice gate (3, 4).
  7. Pickling apparatus according to Claim 6, characterised in that the air feed nozzles are directed at an angle α between 25° and 60° relative to the sluice gate plane.
  8. Pickling apparatus according to Claim 6 or 7, characterised in that the air streams (14) of the air emerging from the air feed nozzles cross in the region above the plate (8) arranged under the sluice gate opening (5).
  9. Pickling apparatus according to one of Claims 6 to 8, characterised in that the air streams (14) emerging from the air feed nozzles are directed essentially horizontally.
  10. Pickling apparatus according to one of Claims 6 to 9, characterised in that the air feed nozzles are arranged in essentially vertically directed air feed channels (12).
  11. Pickling apparatus according to one of Claims 6 to 10, characterised in that air feed nozzles are constructed as a slot (13) extending essentially over the length of the air feed channel (12).
  12. Pickling apparatus according to one of Claims 6 to 11, characterised in that the air feed nozzles are bores arranged essentially one over the other over the length of the air feed channel (12).
  13. Pickling apparatus according to one of Claims 6 to 12, characterised in that the air feed channel (12) is tightly closed at its upper end by the housing ceiling.
  14. Pickling apparatus according to one of Claims 6 to 13, characterised in that air feed channels arranged on both sides of the sluice gate opening_(6) are connected with one another below the plate, wherein an air feed lead opens into the connection of the air feed channels.
  15. Pickling apparatus according to one of Claims 1 to 14, characterised in that one or more air feed nozzles (10) is/are provided directed from the outside against the upper region of the sluice gate opening (5).
EP99890108A 1998-04-06 1999-03-29 Housed pickling apparatus Revoked EP0949355B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT99890108T ATE256766T1 (en) 1998-04-06 1999-03-29 ENCLOSED MEATING PLANT

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT23098U AT2670U1 (en) 1998-04-06 1998-04-06 ENCLOSED BEATING SYSTEM
AT23098U 1998-04-06
AT43498U AT2671U1 (en) 1998-06-30 1998-06-30 ENCLOSED BEATING SYSTEM
AT43498U 1998-06-30

Publications (2)

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EP0949355A1 EP0949355A1 (en) 1999-10-13
EP0949355B1 true EP0949355B1 (en) 2003-12-17

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EP99890108A Revoked EP0949355B1 (en) 1998-04-06 1999-03-29 Housed pickling apparatus

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US (1) US6314975B1 (en)
EP (1) EP0949355B1 (en)
DE (1) DE59908053D1 (en)

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AT410804B (en) * 2000-06-30 2003-08-25 Koerner Chemieanlagen pickling
US6491761B1 (en) * 2000-07-24 2002-12-10 Bethlelem Steel Corporation Process for removing stains from steel sheet in a continuous pickling line
AT509587B1 (en) 2010-10-11 2011-10-15 Tms Transport Und Montagesysteme Gmbh METHOD AND A CLEANING APPARATUS FOR CLEANING INDUSTRIALLY PREPARED COMPONENTS
ES2738734T3 (en) 2015-11-12 2020-01-24 Siedentop Gmbh Pickling procedure and pickling installation
DE102022108314A1 (en) 2022-04-06 2023-10-12 Ecoclean Gmbh Method for passivating a surface of a workpiece and device for passivating workpieces

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GB616151A (en) * 1946-08-29 1949-01-17 Karl Gunnar Larsson Improvements in mechanical handling means for liquid treatment apparatus
US3044098A (en) * 1959-06-02 1962-07-17 United States Steel Corp Apparatus for cleaning wire rod
JPS4830213B1 (en) * 1968-12-05 1973-09-18
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EP0949355A1 (en) 1999-10-13
US6314975B1 (en) 2001-11-13
DE59908053D1 (en) 2004-01-29

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