EP0255698A1 - Exhauster hood for removing airborne particles from a space for treating prefabricated parts - Google Patents

Exhauster hood for removing airborne particles from a space for treating prefabricated parts Download PDF

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Publication number
EP0255698A1
EP0255698A1 EP87111037A EP87111037A EP0255698A1 EP 0255698 A1 EP0255698 A1 EP 0255698A1 EP 87111037 A EP87111037 A EP 87111037A EP 87111037 A EP87111037 A EP 87111037A EP 0255698 A1 EP0255698 A1 EP 0255698A1
Authority
EP
European Patent Office
Prior art keywords
hood
longitudinal slot
suction
suction hood
wall
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
EP87111037A
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German (de)
French (fr)
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EP0255698B1 (en
Inventor
Uwe Hell
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.)
Hell & Co Kunststoffbeschichtung KG GmbH
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Hell & Co Kunststoffbeschichtung KG GmbH
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Publication date
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Priority to AT87111037T priority Critical patent/ATE52430T1/en
Publication of EP0255698A1 publication Critical patent/EP0255698A1/en
Application granted granted Critical
Publication of EP0255698B1 publication Critical patent/EP0255698B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C15/00—Enclosures for apparatus; Booths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • 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
    • C23C2/003—Apparatus
    • 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
    • C23C2/003—Apparatus
    • C23C2/0036—Crucibles
    • 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
    • C23C2/325—Processes or devices for cleaning the bath
    • 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 suction hood for removing suspended matter from a treatment room for components, in particular from an open-top immersion bath with at least one chamber with a treatment liquid which develops dangerous gases or vapors, the hood at least one lateral passage for those to be immersed in the chamber by means of a lifting device Has components.
  • Such a known hood consists of an essentially elongated, housing-like structure, the relatively small and opposite end walls, the elongated rear wall and the top wall of which are closed. While the top wall has a suction nozzle, the elongated front wall of the hood is designed so that the front of the hood has a loading opening.
  • the suction hood designed in this way is placed on an immersion bath, which has at least one chamber with a treatment liquid for immersion contains components to be treated.
  • the treatment liquid which can be, for example, a chemical for producing a high-gloss surface on the components, for example on sheet metal, secretes toxic gases, for example nitrous gases or chlorinated hydrocarbons, which are sucked off by means of a suction blower over the hood's suction nozzle.
  • toxic gases for example nitrous gases or chlorinated hydrocarbons
  • the object of the invention is to improve a suction hood of the type mentioned in such a way that a complete suction of dangerous and / or undesirable suspended matter from the treatment room for the components is guaranteed, that a suction fan with a comparatively reduced suction power can be used and that the treatment rooms can have a greater overall length than before, without the need for an inefficient suction fan.
  • the solution is based on the introductory suction hood and is characterized in that at least one longitudinal slot is provided in the upper wall of the suction hood for the passage of lifting ropes or the like of the hoist, that the longitudinal slot and the lateral passage lie in a common, vertical plane and that the side passage merges into the longitudinal slot without interruption.
  • two side slots spaced apart from one another and perpendicular to the longitudinal slot and matched to the thickness of the lifting cables of the hoist, preferably extend from each side of the longitudinal slot, the side slots on one side being aligned with the side slots on the other side of the longitudinal slot.
  • the lateral passage is at least essentially closed by means of flexible, self-closing sealing means, wherein the sealing means can consist of two door leaves, preferably made of flexible material, which otherwise at least partially form the corresponding end wall of the hood.
  • the suction hood Due to the design of the suction hood according to the invention, only a small air inlet area remains in the area of the lateral passage and the longitudinal slot for the entry of air into the hood when suctioning out the undesirable toxic gases, vapors or the like below the hood, without the introduction and removal of the components , which can also have larger dimensions than hitherto, in or out of the immersion bath is obstructed in any way.
  • the components hanging on the lifting ropes for example of a crane, can be conveniently moved from the front to the suction hood in a horizontal direction retracted and then subjected to the immersion treatment by lowering and moving in one or more immersion baths and then raised again and moved out of the hood.
  • the resulting gases, vapors or the like are completely and safely discharged by means of a suction blower with a significantly lower suction power than before, since the aforementioned, reduced air inlet surface ensures the vacuum in the interior of the hood, which is necessary for effective suction of the gases, etc., the required negative pressure is understandably also lower than before.
  • the advantages mentioned lead to an increase in the performance of the system consisting of the immersion bath and the suction hood.
  • the proposed design of the suction hood is structurally simple and can therefore be implemented very inexpensively.
  • Another advantage of the solution according to the invention is that, of course, a greater length of the immersion baths than previously is understandably possible, so that very long components, for example sheets or rods, can be treated on the surface.
  • the suction hood generally designated 1 consists of a housing of rectangular shape with the two opposite end walls 2 and 3, the two opposite longitudinal walls 4 and 5 and the top wall 6. Below the suction hood 1 is completely open.
  • the material for making the hood is preferably fiber reinforced plastic, e.g. GRP reinforced with iron reinforcement 7 or stainless steel.
  • the suction hood 1 is placed on an open top bath, generally designated 8, e.g. loosely placed and is supported by support bodies 9.
  • the immersion bath 8 consists of a tub 10 with, for example, three chambers 11, 12 and 13 (FIG. 4) and from the usual treatment liquids contained in the chambers for the surface treatment of components, such as e.g. Sheets that are treated by immersion in the liquids in the chambers.
  • a surface treatment for example, consists in producing a high-gloss surface on the components by chemical means.
  • liquids are used which, when immersed in and withdrawing the components from the liquid producing the high-gloss surface, contain toxic gases, mists and / or vapors, e.g. Generate nitrous gases or chlorinated hydrocarbons, or the like, which float above the chambers and are dangerous for the operator of the immersion belt system and must therefore be extracted.
  • the upper wall 6 of the suction hood 1 has at least one longitudinal slot 14 which runs in the longitudinal center of the upper wall, from which one end wall 2 extends and extends in the direction of the opposite end wall 3 essentially over the length of the upper wall 6.
  • There are also four secondary slots 15, 16, 17 and 18 are provided which extend laterally from the longitudinal slot, two secondary slots being located on each side of the longitudinal slot.
  • the secondary slots preferably run perpendicular to the longitudinal slot and are at a distance from one another, the two secondary slots on one side of the longitudinal slot being aligned with those on the other side of the longitudinal slot.
  • the end wall 2 of the suction hood 1 is constructed as a side passage 19, for example in that there is no rigid wall and instead the hood is provided with flexible, self-closing sealing means 20 at this point.
  • the sealing means can consist, for example, of two pivotable door leaves 21, 22 made of flexible material, for example acrylic glass, the normal position of which forms an at least substantially closed end wall.
  • the door leaves 21, 22 it is also possible for the door leaves 21, 22 to make up only a partial area of the end wall 2 of the suction hood 1, so that the remaining area of the end wall 2 is designed as a rigid end wall. Which width is selected for the door leaf ultimately depends on the width of the components to be treated, which must be passed through the side passage 19.
  • the width of the longitudinal slot 14 as well as the width of the secondary slots 15 to 18 is relatively small and generally only dimensioned so wide that the lifting ropes 23 of a hoist e.g. of a crane, not shown further, can be guided along in the slots, since the components and the holding means 24 of the lifting cables can be guided in and out through the lateral passage 19 into the interior of the suction hood 1.
  • the width of the slots therefore only needs to be matched to the thickness of the lifting ropes or the like.
  • the longitudinal slot 14 can also be continued up to the other end wall 3, as is indicated by dashed lines in FIG. 2.
  • this end wall is also designed as a further lateral passage 26 which, for example, can also be equipped with pivotable door leaves 27, 28 of the type described above as a sealing means.
  • the suction hood 1 is provided with at least one suction channel, which is preferably on the inside the hood is arranged.
  • two longitudinal suction channels 29 and 30 are provided on the inside of the hood top wall 6, parallel to each other and to the longitudinal slot 14 and adjacent to the longitudinal walls 4 and 5, which extend at least approximately to the entire length of the wall 6.
  • the channels are provided with a plurality of suction slits 31 inside the hood, while they are provided outside the hood with connecting pieces 32 for a suction fan.
  • the procedure can be such that the two inner suction channels 29, 30 are connected to one another by an intermediate channel 36 at the end, one of the two connecting pieces 32 then also being omitted.
  • At least one longitudinal wall 4 is preferably provided with a plurality of viewing windows 33, each window further being provided with an illumination device 34 for illuminating at least the treated components.
  • a sheet metal plate that is to receive a high-gloss surface chemically is operated as follows. It is assumed that the sheet metal plate is held by the holding tools 24 of the lifting ropes 23, the two lifting ropes 23 being spread apart by a cross member 35.
  • the sheet metal plate (not shown) held in this way becomes horizontal and by automatically pushing open the door leaves 20, 21 through the lateral passage 19 inserted into the interior of the suction hood 1, the lifting cables 23 entering the slot 14.
  • the sheet metal plate is then immersed one after the other in the different liquids of the individual chambers 11, 12 and 13 of the tub 10, the lifting cables 23 also reaching the secondary slots 15 to 18 according to the position of the chambers.
  • the lifting ropes are positioned in the longitudinal slot 14 and the treated sheet metal plate is led horizontally outwards either through the first-mentioned lateral passage 19 or through the other lateral passage 26, the corresponding door leaves being pushed open to the outside and then closing again.
  • the suction hood 1 described above is preferably used in the production of high-gloss surfaces by chemical means.
  • the use of the hood is not limited to this; it can also be used in conjunction with other treatment rooms for surface treatment of components, e.g. in immersion baths for pickling, stripping, galvanizing, galvanizing etc. These baths generate gases, mists or vapors which are dangerous for the operator.
  • the suction hood can also be used wherever, for example, dusts or the like arise during the surface treatment of components, e.g. in blasting and spraying chambers, where the resulting dusts or suspended matter are also extracted to achieve a pleasant workflow.

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  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Prevention Of Fouling (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Sorption (AREA)
  • Separation Of Particles Using Liquids (AREA)

Abstract

1. Exhauster hood for removing airborne particles from a space for treating prefabricated parts and in particular from an immersion bath (8) which is open at the top and has at least one compartment (13) containing a treatment liquid which generates hazardous gases or vapours, the hood (1) having in the side at least one passage (19) through it for the parts, which are dipped into the compartment by a lifting mechanism, characterised in that at least one longitudinal slot (14) for lifting cables (23) or the like belonging to the lifting mechanism to move through is provided in the top wall (6) of the exhauster hood (1), in that the longitudinal slot (14) and the side passage (19) lie in a common vertical plane, in that the side passage merges uninterruptedly into the longitudinal slot, and in that the side passage (19) is at least substantially closed off by yielding, self-closing sealing means (20).

Description

Die Erfindung betrifft eine Absaughaube zum Entfernen von Schwebstoffen aus einem Behandlungsraum für Bau­teile, insbesondere aus einem oben offenen Tauchbad mit wenigstens einer Kammer mit einer gefährliche Gase oder Dämpfe entwickelnden Behandlungsflüssig­keit, wobei die Haube wenigstens einen seitlichen Durchgang für die mittels eines Hebezeuges in die Kammer einzutauchenden Bauteile aufweist.The invention relates to a suction hood for removing suspended matter from a treatment room for components, in particular from an open-top immersion bath with at least one chamber with a treatment liquid which develops dangerous gases or vapors, the hood at least one lateral passage for those to be immersed in the chamber by means of a lifting device Has components.

Eine derartige bekannte Haube besteht aus einem im wesentlichen länglichen, gehäuseartigen Gebilde, dessen im Verhältnis kleine und sich gegenüberlie­gende Endwände, dessen längliche Rückwand sowie des­sen Oberwand geschlossen ausgebildet sind. Während die Oberwand einen Absaugstutzen aufweist, ist die längliche Vorderwand der Haube so gestaltet, daß die Vorderseite der Haube eine Beschickungsöffnung aufweist. Die so gestaltete Absaughaube ist auf einem Tauchbad aufgesetzt, das wenigstens eine Kammer mit einer Behandlungsflüssigkeit für die durch Tauchen zu behandelnden Bauteile enthält. Die Behandlungsflüs­sigkeit, die z.B. eine solche zur chemischen Erzeugung einer Hochglanzoberfläche auf den Bauteilen, z.B. auf Blechen, sein kann, sondert giftige Gase, z.B. nitrose Gase oder Chlorkohlenwasserstoffe, ab, die mittels ei­nes Sauggebläses über den Absaugstutzen der Haube ab­gesaugt werden.Such a known hood consists of an essentially elongated, housing-like structure, the relatively small and opposite end walls, the elongated rear wall and the top wall of which are closed. While the top wall has a suction nozzle, the elongated front wall of the hood is designed so that the front of the hood has a loading opening. The suction hood designed in this way is placed on an immersion bath, which has at least one chamber with a treatment liquid for immersion contains components to be treated. The treatment liquid, which can be, for example, a chemical for producing a high-gloss surface on the components, for example on sheet metal, secretes toxic gases, for example nitrous gases or chlorinated hydrocarbons, which are sucked off by means of a suction blower over the hood's suction nozzle.

Da die Beschickungsöffnung auf der Vorderseite der Ab­saughaube sehr groß und nicht abgedichtet ist, ist ein sehr starkes Sauggebläse mit einer entsprechend hohen Saugleistung erforderlich, um ein unkontrollier­tes Entweichen von giftigen Gasen, Dämpfen oder der­gleichen zum Schutz von Bedienungspersonal im wesent­lichen zu vermeiden. Es ist verständlich, daß bei großen Bauteilen, insbesondere bei großen Blechen, trotz eines starken Sauggebläses trotzdem noch gif­tige Gase usw. durch die große Beschickungsöffnung hindurch entweichen können und damit zur Gefährdung des Bedienungspersonals führen. Ein weiterer Nachteil besteht darin, daß die Baulänge des Tauchbades begrenzt ist, weil sonst ein Gebläse mit noch größerer Sauglei­stung erforderlich wäre, was nicht mehr wirtschaftlich ist.Since the loading opening on the front of the suction hood is very large and not sealed, a very strong suction fan with a correspondingly high suction power is required in order to substantially prevent an uncontrolled escape of toxic gases, vapors or the like to protect operating personnel. It is understandable that in the case of large components, in particular large sheets, despite a strong suction fan, toxic gases etc. can still escape through the large loading opening and thus endanger the operating personnel. Another disadvantage is that the overall length of the immersion bath is limited, because otherwise a fan with an even greater suction power would be required, which is no longer economical.

Die Aufgabe der Erfindung besteht in der Verbesserung einer Absaughaube der einleitend angeführten Art da­hingehend, daß ein vollständiges Absaugen von gefähr­lichen und/oder unerwünschten Schwebstoffen aus dem Behandlungsraum für die Bauteile gewährleistet ist, daß ein Sauggebläse mit vergleichsweise verringerter Saugleistung verwendet werden kann und daß die Be­handlungsräume eine größere Baulänge als bisher auf­weisen können, ohne daß ein unwirtschaftliches Saug­gebläse erforderlich ist.The object of the invention is to improve a suction hood of the type mentioned in such a way that a complete suction of dangerous and / or undesirable suspended matter from the treatment room for the components is guaranteed, that a suction fan with a comparatively reduced suction power can be used and that the treatment rooms can have a greater overall length than before, without the need for an inefficient suction fan.

Die Lösung geht von der einleitend angeführten Absaug­haube aus und kennzeichnet sich dadurch, daß in der Oberwand der Absaughaube wenigstens ein Längsschlitz für den Durchlauf von Hebeseilen oder dergleichen des Hebezeuges vorgesehen ist, daß der Längsschlitz und der seitliche Durchgang in einer gemeinsamen, vertika­len Ebene liegen und daß der seitliche Durchgang un­terbrechungsfrei in den Längsschlitz übergeht.The solution is based on the introductory suction hood and is characterized in that at least one longitudinal slot is provided in the upper wall of the suction hood for the passage of lifting ropes or the like of the hoist, that the longitudinal slot and the lateral passage lie in a common, vertical plane and that the side passage merges into the longitudinal slot without interruption.

In bevorzugter Ausgestaltung der erfindungsgemäßen Ab­saughaube erstrecken sich von jeder Seite des Längs­schlitzes vorzugsweise zwei voneinander beabstandete, zum Längsschlitz senkrecht verlaufende und auf die Dicke der Hebeseile des Hebezeuges abgestimmte Neben­schlitze, wobei die Nebenschlitze der einen Seite mit den Nebenschlitzen auf der anderen Seite des Längs­schlitzes fluchten. Der seitliche Durchgang ist mit­tels nachgiebiger, selbstschließender Abdichtmittel zumindest im wesentlichen geschlossen, wobei die Ab­dichtmittel aus zwei, vorzugsweise aus flexiblem Material hergestellten Türflügeln bestehen können, die im übrigen wenigstens teilweise die entsprechende Endwand der Haube bilden.In a preferred embodiment of the suction hood according to the invention, two side slots, spaced apart from one another and perpendicular to the longitudinal slot and matched to the thickness of the lifting cables of the hoist, preferably extend from each side of the longitudinal slot, the side slots on one side being aligned with the side slots on the other side of the longitudinal slot. The lateral passage is at least essentially closed by means of flexible, self-closing sealing means, wherein the sealing means can consist of two door leaves, preferably made of flexible material, which otherwise at least partially form the corresponding end wall of the hood.

Aufgrund der erfindungsgemäßen Ausbildung der Absaug­haube verbleibt insgesamt nur eine kleine Luftein­trittsfläche im Bereich des seitlichen Durchgangs und des Längsschlitzes für den Eintritt von Luft in die Haube beim Absaugen der unerwünschten giftigen Gase, Dämpfe oder dergleichen unterhalb der Haube, ohne daß das Einbringen und Ausbringen der Bauteile, die auch größere Abmessungen als bisher aufweisen können, in das bzw. aus dem Tauchbad in irgendeiner Weise behindert ist. Die an den Hebeseilen z.B. eines Kranes hängenden Bauteile können bequem von der Stirn­seite her in horizontaler Richtung in die Absaughaube eingefahren und dann durch Absenken und Bewegen in ei­nem oder mehreren Tauchbädern der Tauchbehandlung un­terworfen und anschließend wieder angehoben und aus der Haube herausgefahren werden. Während dieses gesam­ten Behandlungsvorganges werden die anfallenden Gase, Dämpfe oder dergleichen mittels eines Sauggebläses mit wesentlich kleinerer Saugleistung als bisher vollstän­dig und sicher abgeleitet, da die erwähnte, verkleiner­te Lufteintrittsfläche den zum wirksamen Absaugen der Gase usw. erforderlichen Unterdruck im Haubeninnenraum ohne weiteres gewährleistet, wobei der erforderliche Unterdruck verständlicherweise ebenfalls geringer ist als bisher. Die genannten Vorteile führen weiter zu einer Leistungssteigerung der aus dem Tauchbad und der Absaughaube bestehenden Anlage. Die vorgeschla­gene Ausbildung der Absaughaube ist baulich einfach und läßt sich demgemäß sehr kostengünstig verwirkli­chen. Ein anderer Vorteil der erfindungsgemäßen Lö­sung besteht darin, daß verständlicherweise insbe­sondere eine größere Länge der Tauchbäder als bisher möglich ist, so daß sehr lange Bauteile, z.B. Bleche oder Stangen, oberflächenmäßig behandelt werden können.Due to the design of the suction hood according to the invention, only a small air inlet area remains in the area of the lateral passage and the longitudinal slot for the entry of air into the hood when suctioning out the undesirable toxic gases, vapors or the like below the hood, without the introduction and removal of the components , which can also have larger dimensions than hitherto, in or out of the immersion bath is obstructed in any way. The components hanging on the lifting ropes, for example of a crane, can be conveniently moved from the front to the suction hood in a horizontal direction retracted and then subjected to the immersion treatment by lowering and moving in one or more immersion baths and then raised again and moved out of the hood. During this entire treatment process, the resulting gases, vapors or the like are completely and safely discharged by means of a suction blower with a significantly lower suction power than before, since the aforementioned, reduced air inlet surface ensures the vacuum in the interior of the hood, which is necessary for effective suction of the gases, etc., the required negative pressure is understandably also lower than before. The advantages mentioned lead to an increase in the performance of the system consisting of the immersion bath and the suction hood. The proposed design of the suction hood is structurally simple and can therefore be implemented very inexpensively. Another advantage of the solution according to the invention is that, of course, a greater length of the immersion baths than previously is understandably possible, so that very long components, for example sheets or rods, can be treated on the surface.

Die Erfindung ist nachstehend anhand eines in den an­liegenden Zeichnungen dargestellten Ausführungsbei­spieles näher erläutert. Es zeigen in schematischer Darstellung:

  • Figur 1 eine Seitenansicht auf das Ausführungsbei­spiel,
  • Figur 2 eine Aufsicht auf das Ausführungsbeispiel,
  • Figur 3 eine Schnittdarstellung nach der Linie III-III in Figur 2,
  • Figur 4 eine Endansicht gemäß dem Pfeil IV in Figur 1.
The invention is explained below with reference to an embodiment shown in the accompanying drawings. In a schematic representation:
  • FIG. 1 shows a side view of the exemplary embodiment,
  • FIG. 2 shows a top view of the exemplary embodiment,
  • FIG. 3 shows a sectional illustration along the line III-III in FIG. 2,
  • Figure 4 is an end view according to arrow IV in Figure 1.

Gemäß Figur 1 besteht die allgemein mit 1 bezeichnete Absaughaube aus einem Gehäuse von quaderförmigem Um­riß mit den beiden sich gegenüberliegenden Endwänden 2 und 3, den beiden sich gegenüberliegenden Längswän den 4 und 5 sowie der Oberwand 6. Unten ist die Ab­saughaube 1 vollständig offen ausgebildet. Das Mate­rial für die Herstellung der Haube ist vorzugsweise faserverstärkter Kunststoff, z.B. GFK, der mit Eisen­Bewehrungen 7 verstärkt ist, oder auch Edelstahl. Die Absaughaube 1 ist auf einem oben offenen, allge­mein mit 8 bezeichneten Tauchbad z.B. lose aufge­setzt und wird von Stützkörpern 9 getragen. Das Tauch­bad 8 besteht aus einer Wanne 10 mit beispielsweise drei Kammern 11, 12 und 13 (Figur 4) und aus den in den Kammern enthaltenen üblichen Behandlungsflüssig­keiten für die Oberflächenbehandlung von Bauteilen, wie z.B. Bleche, die durch Eintauchen in die Flüs­sigkeiten der Kammern behandelt werden. Eine bei­spielsweise Oberflächenbehandlung besteht in der Er­zeugung einer Hochglanzoberfläche auf den Bauteilen auf chemischem Wege. Hierzu werden Flüssigkeiten ver­wendet, die beim Eintauchen in die und Herausziehen der Bauteile aus der die Hochglanzoberfläche erzeu­genden Flüssigkeit giftige Gase, Nebel und/oder Dämpfe, z.B. nitrose Gase oder Chlorkohlenwasserstoffe, oder dergleichen erzeugen, die über den Kammern schweben und für die Bedienungsperson der Tauchbandanlage ge­fährlich sind und daher abgesaugt werden müssen.According to Figure 1, the suction hood generally designated 1 consists of a housing of rectangular shape with the two opposite end walls 2 and 3, the two opposite longitudinal walls 4 and 5 and the top wall 6. Below the suction hood 1 is completely open. The material for making the hood is preferably fiber reinforced plastic, e.g. GRP reinforced with iron reinforcement 7 or stainless steel. The suction hood 1 is placed on an open top bath, generally designated 8, e.g. loosely placed and is supported by support bodies 9. The immersion bath 8 consists of a tub 10 with, for example, three chambers 11, 12 and 13 (FIG. 4) and from the usual treatment liquids contained in the chambers for the surface treatment of components, such as e.g. Sheets that are treated by immersion in the liquids in the chambers. A surface treatment, for example, consists in producing a high-gloss surface on the components by chemical means. For this purpose, liquids are used which, when immersed in and withdrawing the components from the liquid producing the high-gloss surface, contain toxic gases, mists and / or vapors, e.g. Generate nitrous gases or chlorinated hydrocarbons, or the like, which float above the chambers and are dangerous for the operator of the immersion belt system and must therefore be extracted.

Die Oberwand 6 der Absaughaube 1 weist wenigstens ei­nen Längsschlitz 14 auf, der in der Längsmitte der Oberwand verläuft, von der einen Endwand 2 ausgeht und sich in Richtung auf die gegenüberliegende End­wand 3 im wesentlichen über die Länge der Oberwand 6 erstreckt. Des weiteren sind vier Nebenschlitze 15, 16, 17 und 18 vorgesehen, die von dem Längsschlitz seitlich ausgehen, wobei sich je zwei Nebenschlitze auf jeder Seite des Längsschlitzes befinden. Die Ne­benschlitze verlaufen vorzugsweise senkrecht zu dem Längsschlitz und weisen voneinander einen Abstand auf, wobei die beiden Nebenschlitze auf der einen Seite des Längsschlitzes mit denen auf der anderen Seite des Längsschlitzes fluchten.The upper wall 6 of the suction hood 1 has at least one longitudinal slot 14 which runs in the longitudinal center of the upper wall, from which one end wall 2 extends and extends in the direction of the opposite end wall 3 essentially over the length of the upper wall 6. There are also four secondary slots 15, 16, 17 and 18 are provided which extend laterally from the longitudinal slot, two secondary slots being located on each side of the longitudinal slot. The secondary slots preferably run perpendicular to the longitudinal slot and are at a distance from one another, the two secondary slots on one side of the longitudinal slot being aligned with those on the other side of the longitudinal slot.

Die Endwand 2 der Absaughaube 1 ist als seitlicher Durch gang 19 konstruiert, und zwar z.B. dadurch, daß eine starre Wand entfällt und stattdessen die Haube an dieser Stelle mit nachgiebigen, selbstschlie­ßenden Abdichtmitteln 20 versehen ist. Die Abdicht­mittel können z.B. aus zwei schwenkbaren Türflügeln 21, 22 aus flexiblem Material, beispielsweise Acryl­glas, bestehen, deren Normalstellung eine zumindest im wesentlichen geschlossene Endwand bilden. In al­ternativer Gestaltung des seitlichen Durchgangs 19 ist es auch möglich, daß die Türflügel 21, 22 nur einen Teilbereich der Endwand 2 der Absaughaube 1 ausmachen, so daß der übrige Bereich der Endwand 2 als starre Endwand ausgebildet ist. Welche Breite für die Türflügel gewählt wird, hängt schließtlich von der Breite der zu behandelnden Bauteile ab, die durch den seitlichen Durchgang 19 hindurchgeführt werden müssen. Ferner können anstelle der schwenk­baren Türflügel auch andere nachgiebige und selbst­schließende Abdichtmittel gewählt werden, wie es auch möglich ist, daß zwischen den beiden Türflügeln bzw. den alternativen Abdichtmitteln ein kleiner Luftspalt verbleiben kann. Wichtig ist es aber, daß der seit­liche Durchgang 19 und der Längsschlitz 14 in einer gemeinsamen vertikalen Ebene liegen und daß der seit­liche Durchgang unterbrechungsfrei in den Längsschlitz übergeht, so daß die zu behandelnden Bauteile unbehin­dert in horizontaler Richtung in die Absaughaube ein­geführt werden können, wie noch klar wird.The end wall 2 of the suction hood 1 is constructed as a side passage 19, for example in that there is no rigid wall and instead the hood is provided with flexible, self-closing sealing means 20 at this point. The sealing means can consist, for example, of two pivotable door leaves 21, 22 made of flexible material, for example acrylic glass, the normal position of which forms an at least substantially closed end wall. In an alternative design of the side passage 19, it is also possible for the door leaves 21, 22 to make up only a partial area of the end wall 2 of the suction hood 1, so that the remaining area of the end wall 2 is designed as a rigid end wall. Which width is selected for the door leaf ultimately depends on the width of the components to be treated, which must be passed through the side passage 19. Furthermore, other resilient and self-closing sealing means can be selected instead of the pivotable door leaf, as is also possible that a small air gap can remain between the two door leaves or the alternative sealing means. It is important, however, that the lateral passage 19 and the longitudinal slot 14 lie in a common vertical plane and that the lateral passage is uninterrupted in the longitudinal slot passes over, so that the components to be treated can be inserted freely in the horizontal direction into the suction hood, as will become clear.

Die Breite des Längsschlitzes 14 wie auch die Breite der Nebenschlitze 15 bis 18 ist relativ klein und im allgemeinen nur so breit bemessen, daß die Hebeseile 23 eines Hebezeuges z.B. eines nicht weiter gezeigten Kranes, in den Schlitzen entlanggeführt werden können, da die Bauteile und die Haltemittel 24 der Hebeseile durch den seitlichen Durchgang 19 hindurch in das Innere der Absaughaube 1 hinein- und herausgeführt werden können. Die Breite der Schlitze braucht somit nur auf die Dicke der Hebeseile oder dergleichen ab­gestimmt zu sein.The width of the longitudinal slot 14 as well as the width of the secondary slots 15 to 18 is relatively small and generally only dimensioned so wide that the lifting ropes 23 of a hoist e.g. of a crane, not shown further, can be guided along in the slots, since the components and the holding means 24 of the lifting cables can be guided in and out through the lateral passage 19 into the interior of the suction hood 1. The width of the slots therefore only needs to be matched to the thickness of the lifting ropes or the like.

Um das Eintreten der Hebeseile 23 oder dergleichen vom Längsschlitz 14 in die Nebenschlitze 15 bis 18 zu er­leichtern, sind Erweiterungen an den Treffstellen der Schlitze vorgesehen, wie es mit 25 links in Figur 2 angedeutet ist.In order to facilitate the entry of the lifting ropes 23 or the like from the longitudinal slot 14 into the secondary slots 15 to 18, extensions are provided at the meeting points of the slots, as indicated by 25 on the left in FIG.

In Weitergestaltung der Absaughaube 1 kann der Längs­schlitz 14 auch bis zu der anderen Endwand 3 weiter­geführt sein, wie es gestrichelt in Figur 2 angedeutet ist. In diesem Fall ist auch diese Endwand als ein weiterer seitlicher Durchgang 26 ausgebildet, der beispielsweise ebenfalls mit schwenkbaren Türflügeln 27, 28 der vorstehend beschriebenen Art als Abdicht­mittel ausgerüstet sein kann. Bei Verwendung einer solchen Absaughaube wird das zu behandelnde Bauteil durch den erstgenannten Durchgang 19 hinein- und durch den anderen Durchgang 26 wieder herausgeführt.In the further development of the suction hood 1, the longitudinal slot 14 can also be continued up to the other end wall 3, as is indicated by dashed lines in FIG. 2. In this case, this end wall is also designed as a further lateral passage 26 which, for example, can also be equipped with pivotable door leaves 27, 28 of the type described above as a sealing means. When using such a suction hood, the component to be treated is led in through the first-mentioned passage 19 and out again through the other passage 26.

Die Absaughaube 1 ist mit wenigstens einem Absaug­kanal versehen, der vorzugsweise auf der Innenseite der Haube angeordnet ist. Vorzugsweise sind auf der Innenseite der Haubenoberwand 6 zwei längsverlaufen­de, zueinander und zu dem Längsschlitz 14 parallele und an die Längswände 4 und 5 angrenzende Absaugka­näle 29 und 30 vorgesehen, die sich zumindest annä­hernd an die gesamte Länge der Wand 6 erstrecken. Die Kanäle sind innerhalb der Haube mit einer Viel­zahl von Einsaugschlitzen 31 versehen, während sie außerhalb der Haube mit Anschlußstutzen 32 für ein Sauggebläse versehen sind.The suction hood 1 is provided with at least one suction channel, which is preferably on the inside the hood is arranged. Preferably, two longitudinal suction channels 29 and 30 are provided on the inside of the hood top wall 6, parallel to each other and to the longitudinal slot 14 and adjacent to the longitudinal walls 4 and 5, which extend at least approximately to the entire length of the wall 6. The channels are provided with a plurality of suction slits 31 inside the hood, while they are provided outside the hood with connecting pieces 32 for a suction fan.

Wenn auf den anderen seitlichen Durchgang 26 der Ab­saughaube und auf den verlängerten Längsschlitz 14 verzichtet wird, kann so vorgegangen werden, daß die beiden inneren Absaugkanäle 29, 30 durch einen endseitigen Zwischenkanal 36 miteinander verbunden sind, wobei dann auch einer der beiden Anschluß­stutzen 32 entfällt.If the other lateral passage 26 of the suction hood and the elongated longitudinal slot 14 are dispensed with, the procedure can be such that the two inner suction channels 29, 30 are connected to one another by an intermediate channel 36 at the end, one of the two connecting pieces 32 then also being omitted.

Wenigstens eine Längswand 4 ist vorzugsweise mit meh­reren Sichtfenstern 33 versehen, wobei ferner jedes Fenster mit einer Beleuchtungseinrichtung 34 zum Be­leuchten wenigstens der behandelten Bauteile verse­hen ist.At least one longitudinal wall 4 is preferably provided with a plurality of viewing windows 33, each window further being provided with an illumination device 34 for illuminating at least the treated components.

Zum Behandeln der Oberfläche eines Bauteiles, z.B. einer Blechplatte, das bzw. die eine Hochglanzober­fläche auf chemischem Wege erhalten soll, wird wie folgt vorgegangen. Es sei angenommen, daß die Blech­platte von den Haltewerkzeugen 24 der Hebeseile 23 gehalten wird, wobei die beiden Hebeseile 23 durch eine Traverse 35 gespreizt werden.For treating the surface of a component, e.g. A sheet metal plate that is to receive a high-gloss surface chemically is operated as follows. It is assumed that the sheet metal plate is held by the holding tools 24 of the lifting ropes 23, the two lifting ropes 23 being spread apart by a cross member 35.

Die so gehaltene Blechplatte (nicht gezeigt) wird horizontal und durch selbsttätiges Aufstoßen der Türflügel 20, 21 durch den seitlichen Durchgang 19 hindurch in das Innere der Absaughaube 1 eingeführt, wobei die Hebeseile 23 in den Schlitz 14 gelangen. Die Blechplatte wird dann nacheinander in die unterschied­lichen Flüssigkeiten der einzelnen Kammern 11, 12 und 13 der Wanne 10 eingetaucht, wobei die Hebeseile 23 entsprechend der Lage der Kammern auch in die Neben­schlitze 15 bis 18 gelangen. Schließlich werden die Hebeseile in dem Längsschlitz 14 positioniert und die behandelte Blechplatte entweder durch den erstgenann­ten seitlichen Durchgang 19 oder durch den anderen seitlichen Durchgang 26 hindurch horizontal nach außen herausgeführt, wobei die entsprechenden Türflügel nach außen aufgestoßen werden und sich anschließend wie­der selbst schließen.The sheet metal plate (not shown) held in this way becomes horizontal and by automatically pushing open the door leaves 20, 21 through the lateral passage 19 inserted into the interior of the suction hood 1, the lifting cables 23 entering the slot 14. The sheet metal plate is then immersed one after the other in the different liquids of the individual chambers 11, 12 and 13 of the tub 10, the lifting cables 23 also reaching the secondary slots 15 to 18 according to the position of the chambers. Finally, the lifting ropes are positioned in the longitudinal slot 14 and the treated sheet metal plate is led horizontally outwards either through the first-mentioned lateral passage 19 or through the other lateral passage 26, the corresponding door leaves being pushed open to the outside and then closing again.

Die vorstehend beschriebene Absaughaube 1 wird bevor­zugt eingesetzt bei der Erzeugung von Hochglanzober­flächen auf chemischem Wege. Die Anwendung der Haube ist hierauf jedoch nicht beschränkt; sie kann auch in Verbindung mit anderen Behandlungsräumen zur Ober­flächenbehandlung von Bauteilen verwendet werden, z.B. bei Tauchbädern zum Beizen, Entlacken, Verzinken, Galvanisieren usw. Bei diesen Bädern entstehen Gase, Nebel oder Dämpfe, die für die Bedienungsperson ge­fährlich sind. Die Absaughaube kann aber auch überall dort eingesetzt werden, wo bei der Oberflächenbehand­lung von Bauteilen beispielsweise Stäube oder derglei­chen entstehen, z.B. in Strahl- und Spritzkammern, wo die entstehenden Stäube oder Schwebstoffe zur Er­zielung eines angenehmen Arbeitsablaufes ebenfalls abgesaugt werden.The suction hood 1 described above is preferably used in the production of high-gloss surfaces by chemical means. The use of the hood is not limited to this; it can also be used in conjunction with other treatment rooms for surface treatment of components, e.g. in immersion baths for pickling, stripping, galvanizing, galvanizing etc. These baths generate gases, mists or vapors which are dangerous for the operator. The suction hood can also be used wherever, for example, dusts or the like arise during the surface treatment of components, e.g. in blasting and spraying chambers, where the resulting dusts or suspended matter are also extracted to achieve a pleasant workflow.

Claims (10)

1. Absaughaube zum Entfernen von Schwebstoffen aus ei­nem Behandlungsraum für Bauteile, insbesondere aus einem oben offenen Tauchbad mit wenigstens einer Kammer mit einer gefährlichen Gase oder Dämpfe ent­wickelnden Behandlungsflüssigkeit, wobei die Haube wenigstens einen seitlichen Durchgang für die mit­tels eines Hebezeuges in die Kammer eintauchenden Bauteile aufweist, dadurch gekennzeichnet, daß in der Oberwand (6) der Absaughaube (1) wenigstens ein Längsschlitz (14) für den Durchlauf von Hebe­seilen (23) oder dergleichen des Hebezeuges vor­gesehen ist, daß der Längsschlitz (14) und der seitliche Durchgang (19) in einer gemeinsamen, vertikalen Ebene liegen und daß der seitliche Durch­gang (19) unterbrechungsfrei in den Längsschlitz (14) übergeht.1. Suction hood for removing suspended matter from a treatment room for components, in particular from an open-top immersion bath with at least one chamber with a treatment liquid which develops dangerous gases or vapors, the hood having at least one lateral passage for the components immersing into the chamber by means of a lifting device , characterized in that in the upper wall (6) of the suction hood (1) there is at least one longitudinal slot (14) for the passage of lifting ropes (23) or the like of the hoist, that the longitudinal slot (14) and the lateral passage (19) lie in a common, vertical plane and that the lateral passage (19) merges into the longitudinal slot (14) without interruption. 2. Absaughaube nach Anspruch 1, dadurch gekennzeich­net, daß sich von jeder Seite des Längsschlitzes (14) aus vorzugsweise zwei voneinander beabstan­dete, zum Längsschlitz senkrecht verlaufende und auf die Dicke der Hebeseile (23) abgestimmte Ne­benschlitze (15, 16, 17, 18) erstrecken und daß die Nebenschlitze (15, 16) der einen Seite mit den Nebenschlitzen (17, 18) der anderen Seite des Längsschlitzes (14) fluchten.2. Suction hood according to claim 1, characterized in that from each side of the longitudinal slot (14) preferably two spaced apart, perpendicular to the longitudinal slot and to the thickness of the lifting cables (23) matched secondary slots (15, 16, 17, 18) extend and that the secondary slots (15, 16) on one side are aligned with the secondary slots (17, 18) on the other side of the longitudinal slot (14). 3. Absaughaube nach Anspruch 2, dadurch gekennzeich­net, daß die Nebenschlitze (15, 16, 17, 18) sich erweiternd (25) in den Längsschlitz (14) übergehen.3. Extractor hood according to claim 2, characterized in that the secondary slots (15, 16, 17, 18) expand (25) into the longitudinal slot (14). 4. Absaughaube nach Anspruch 1, 2 oder 3, dadurch ge­kennzeichnet, daß sich der Längsschlitz (14) über die gesamte Länge der Haubenoberwand (6) erstreckt und daß sich an das andere Ende des Längsschlitzes ein weiterer seitlichen Durchgang (26) der Haube (1) für das Herausführen der behandelten Bauteile anschließt.4. Suction hood according to claim 1, 2 or 3, characterized in that the longitudinal slot (14) extends over the entire length of the hood top wall (6) and that at the other end of the longitudinal slot, a further lateral passage (26) of the hood ( 1) for leading out the treated components. 5. Absaughaube nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der oder je­der seitliche Durchgang (19, 26) mittels nachgie­biger, selbstschließender Abdichtmittel (20, 21; 27, 28) zumindest im wesentlichen geschlossen ist.5. Suction hood according to at least one of claims 1 to 4, characterized in that the or each lateral passage (19, 26) is at least substantially closed by means of flexible, self-closing sealing means (20, 21; 27, 28). 6. Absaughaube nach Anspruch 5, dadurch gekennzeich­net, daß die Abdichtmittel aus zwei, vorzugsweise aus flexiblem Material hergestellten Türflügeln (20, 21; 27, 28) bestehen, die im übrigen wenig­stens teilweise eine Endwand (2; 3) der Haube (1) bilden.6. Suction hood according to claim 5, characterized in that the sealing means consist of two, preferably made of flexible material door leaves (20, 21; 27, 28), which at least partially an end wall (2; 3) of the hood (1) form. 7. Absaughaube nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß sie wenigstens auf einer Längswand (4, 5) mit vorzugsweise meh­reren Sichtfenstern (33) versehen ist und daß die Sichtfenster mit Beleuchtungseinrichtungen (34) zum Beleuchten wenigstens der behandelten Bauteile versehen ist.7. suction hood according to at least one of claims 1 to 6, characterized in that it is provided at least on one longitudinal wall (4, 5) with preferably a plurality of viewing windows (33) and that the viewing window with lighting devices (34) for illuminating at least the treated components is provided. 8. Absaughaube nach wenigstens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß an wenigstens einer Wand der Haube (1) und vorzugsweise in bei­den Längsrandbereichen auf der Innenseite der Haubenoberwand (6) ein länglicher, zu dem Längs­schlitz (14) paralleler Absaugkanal (29, 30) vor­gesehen ist.8. suction hood according to at least one of claims 1 to 7, characterized in that on at least one wall of the hood (1) and preferably in both longitudinal edge areas on the inside of the hood top wall (6) an elongated, to the longitudinal slot (14) parallel suction channel ( 29, 30) is provided. 9. Absaughaube nach Anspruch 8, dadurch gekennzeich­net, daß sich der oder jeder Absaugkanal (29, 30) zumindest annähernd über die gesamte Länge der entsprechenden Wand der Haube (1) erstreckt.9. suction hood according to claim 8, characterized in that the or each suction channel (29, 30) extends at least approximately over the entire length of the corresponding wall of the hood (1). 10. Absaughaube nach wenigstens einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß sie Kasten­form aufweist und aus faserverstärktem Kunststoff mit Bewehrungen (7) oder aus Edelstahl besteht.10. Suction hood according to at least one of claims 1 to 9, characterized in that it has a box shape and consists of fiber-reinforced plastic with reinforcements (7) or stainless steel.
EP87111037A 1986-08-07 1987-07-30 Exhauster hood for removing airborne particles from a space for treating prefabricated parts Expired - Lifetime EP0255698B1 (en)

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AT87111037T ATE52430T1 (en) 1986-08-07 1987-07-30 EXTRACTION HOOD FOR REMOVAL OF SUSPENDED PARTS FROM A TREATMENT ROOM FOR COMPONENTS.

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DE19863626781 DE3626781A1 (en) 1986-08-07 1986-08-07 EXTRACTION COVER FOR REMOVING FLOATING SUBSTANCES FROM A TREATMENT ROOM FOR COMPONENTS
DE3626781 1986-08-07

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EP0488259A1 (en) * 1990-11-28 1992-06-03 Fujitsu Limited Sequential logic circuit having state hold circuits
WO1998011268A1 (en) * 1996-09-09 1998-03-19 Brunner Verzinkerei Brüder Bablik Gesellschaft Mbh Flue gas capturing system
CN101797570A (en) * 2010-03-11 2010-08-11 上海永丰热镀锌有限公司 Curtain-type soot treatment and purification system for hot galvanizing and method thereof
CN103643246A (en) * 2013-12-11 2014-03-19 广东迪生电力钢构器材有限公司 Hot-dip galvanizing production line pretreatment acid mist sealing, collecting and treating system
CN107671099A (en) * 2017-10-24 2018-02-09 浙江绿维环境股份有限公司 One kind lifting acid fog collection device

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US20210316343A1 (en) * 2020-04-09 2021-10-14 Imperial Systems, Inc. Fume Hood Having Structurally Integrated Components

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DE918193C (en) * 1950-02-09 1954-09-20 Heinrich Ausserehl Paint spray booth
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486712A1 (en) * 1990-11-19 1992-05-27 Ernst Eichholzer Apparatus for the surface treatment of substrates
EP0488259A1 (en) * 1990-11-28 1992-06-03 Fujitsu Limited Sequential logic circuit having state hold circuits
US5221866A (en) * 1990-11-28 1993-06-22 Fujitsu Limited Sequential logic circuit having state hold circuits
WO1998011268A1 (en) * 1996-09-09 1998-03-19 Brunner Verzinkerei Brüder Bablik Gesellschaft Mbh Flue gas capturing system
CN101797570A (en) * 2010-03-11 2010-08-11 上海永丰热镀锌有限公司 Curtain-type soot treatment and purification system for hot galvanizing and method thereof
CN101797570B (en) * 2010-03-11 2014-12-03 上海永丰热镀锌有限公司 Curtain-type soot treatment and purification system for hot galvanizing and method thereof
CN103643246A (en) * 2013-12-11 2014-03-19 广东迪生电力钢构器材有限公司 Hot-dip galvanizing production line pretreatment acid mist sealing, collecting and treating system
CN103643246B (en) * 2013-12-11 2016-02-10 广东迪生电力钢构器材有限公司 A kind of hot-dip galvanizing line pretreatment acid mist sealing collection processing system implementing
CN107671099A (en) * 2017-10-24 2018-02-09 浙江绿维环境股份有限公司 One kind lifting acid fog collection device
CN107671099B (en) * 2017-10-24 2024-02-13 浙江绿维环境股份有限公司 Lifting acid mist collecting device

Also Published As

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EP0255698B1 (en) 1990-05-09
ATE52430T1 (en) 1990-05-15
ES2015928B3 (en) 1990-09-16
DE3626781A1 (en) 1988-02-11
DE3762575D1 (en) 1990-06-13

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