EP0486712B1 - Installation pour le traitement superficiel d'articles - Google Patents

Installation pour le traitement superficiel d'articles Download PDF

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Publication number
EP0486712B1
EP0486712B1 EP90122064A EP90122064A EP0486712B1 EP 0486712 B1 EP0486712 B1 EP 0486712B1 EP 90122064 A EP90122064 A EP 90122064A EP 90122064 A EP90122064 A EP 90122064A EP 0486712 B1 EP0486712 B1 EP 0486712B1
Authority
EP
European Patent Office
Prior art keywords
tank
edge
lid
closed position
plate
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.)
Expired - Lifetime
Application number
EP90122064A
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German (de)
English (en)
Other versions
EP0486712A1 (fr
Inventor
Ernst Eichholzer
Alfred Schnyder
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.)
Eichholzer Ernst
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE59006376T priority Critical patent/DE59006376D1/de
Priority to AT90122064T priority patent/ATE108221T1/de
Priority to EP90122064A priority patent/EP0486712B1/fr
Publication of EP0486712A1 publication Critical patent/EP0486712A1/fr
Application granted granted Critical
Publication of EP0486712B1 publication Critical patent/EP0486712B1/fr
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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
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/04—Apparatus
    • 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
    • B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material

Definitions

  • the present invention relates to a device for receiving workpieces to be subjected to a surface treatment, in which gases and / or vapors to be removed arise, which device has a tub with an interior for receiving the workpieces to be treated and a tub cover which is between an open position and a The closed position is movable and has a flow channel device which contains an inlet area and is designed on the outlet side for connection to a suction draft source for removing the gases / or vapors formed during the surface treatment.
  • gases and / or vapors are generated which must not be released directly into the environment. These gases and / or vapors are drawn off and disposed of by appropriate plant parts. As is well known, considerable amounts of air are also sucked out. The amount of air drawn off must obviously be replaced by an equal amount of supply air, which must be brought to a predetermined temperature, which temperature is such that the supply air must be heated except during the warmest season. This heating obviously means a considerable expenditure of energy. Further emerges due to the relatively large amount of air circulated and also due to the wind speed, for example on the surface of the bath, a loss of evaporation, which is very pronounced, for example, in electroplating systems.
  • CH-A-654 333 discloses a device for receiving workpieces to be subjected to a surface treatment, which has a tub and a tub cover that can be moved between an open position and a closed position. The resulting gases are extracted by a suction device. Flaps arranged above the bath create a swirl roller through which the gases formed are directed against the inlet to the suction device.
  • the lid of the device according to the invention seals the bath as tightly as possible and only those vapors are sucked off which can escape through the seal, ie only leakage vapors.
  • the invention achieves the object of providing a device for receiving workpieces to be subjected to a surface treatment, in which the tub cover forms a section of the flow channel device and there are no structural members on the inner tub walls for connection to the suction source.
  • the advantages achieved by the invention are essentially to be seen in the fact that the amount of exhaust air is considerably reduced, a high saving in energy for heating the treatment medium is achieved by keeping the steam pressure in the respective tub higher than before.
  • the much smaller amount of exhaust air can result in smaller ventilation systems with a corresponding further energy saving.
  • the MAK value can also be maintained and pollutant emissions can also be greatly reduced.
  • the reference numeral 1 denotes the tub in which the respective goods are subjected to a surface treatment.
  • the tub 1 is closed at the top by a lid.
  • This cover is basically composed of an upper plate 2 and a lower plate 3, which plates 2, 3 enclose a space 9 between them.
  • the cover formed from the two plates 2, 3 is firmly connected to a hollow shaft 7, so that the cover 2, 3 can be pivoted between the (drawn) closed position and an open position by rotating the hollow shaft 7.
  • the hollow shaft 7 accordingly has an interior 8.
  • the upper plate 2 is flat and the lower plate 3 is bowl-shaped.
  • the lower plate 3, viewed in cross section has an angled edge region.
  • the lower plate 3 has a section 4 at its outermost edge region, which runs parallel to the main surface of the lower 3 or upper 2 plate of the cover and serves as a support section 4 of the entire cover on the tub edge 5.
  • This support section 4 is followed by a plate section 12 running at right angles thereto, which runs at a small distance from and parallel to the tub inner edge section 11 opposite it.
  • This described formation of the edge of the lower Plate 3 is formed at three edge regions of the square plate, the fourth edge region being, as shown, firmly connected to the hollow shaft 7.
  • edge slot 33 At the corresponding peripheral edge (also on three sides) of the cover, there is an edge slot 33.
  • the space 9 of the cover 2, 3 is connected to the interior 8 of the hollow shaft 7 via passages 34.
  • the reference number 35 denotes a seal that is possible here, but not available in all systems.
  • FIG. 2 shows a view in the direction of arrow A in FIG. 1.
  • the hollow shaft 7 is closed on one side (in FIG. 2 on the left) and connected to a drive 36, by means of which the cover is pivoted up and down.
  • This drive 36 can take any form, it can be an electric motor drive, a hydraulic or pneumatic drive.
  • the hollow shaft 7 is designed for connection to an exhaust air line 37, which leads to a suction source 32.
  • the hollow shaft 7 is permanently connected to the exhaust air duct 37, with any known measures being taken with regard to the sealing between the rotatable hollow shaft 7 and the fixed exhaust air duct 37.
  • the operation of the device shown is as follows. It is assumed that the goods in the tub are used for any surface treatment, with gases and / or vapors developing depending on the treatment in question. These are now trying to emerge from the tub, for example under the influence of temperature. A flow thus forms through the gap 13 between the plate section 12 and the tub inner wall section 11. This gap 13 sets in the flow first resistance to. The flow continues through the section 6 between the support section 4 of the lower plate 3 and the tub rim 5. Since there are usually no seals here (or may be for reasons of corrosion, for example), the gases and / or vapors can escape through this section 6. Incidentally, designs are also conceivable in which there is a small distance between the support section 4 and the tub edge 5.
  • the gap 13 forms, together with the section 6, a flow resistance section similar to a labyrinth seal, so that a resistance is opposed to the outflow.
  • the exhaust air volume can be reduced to 5-10% of the previous exhaust air volume, with the result that the exhaust air system can be much smaller, the cleaning systems including their energy requirements are much smaller, the supply air system including the energy requirement for the supply air blower becomes smaller and the heat exchanger for heating the supply air and the energy requirement for this supply air heating is also greatly reduced.
  • the support section 4 of the lower plate 3 is further back than the edge of the upper plate 2.
  • the edges of the two plates 2, 3 can be aligned with one another.
  • the gases and vapors sucked into the intermediate space 9, including the air also sucked in from the environment, flow through passages 34 in the hollow shaft 7 into the interior 8 thereof and from there, as indicated in FIG. 2, through the exhaust air line 37 to the suction source 32
  • the cover and the hollow shaft thus form the flow channel device for the exhaust air. There are no suction components in the interior of the tub 1.
  • the suction hood 16 has a suction nozzle 17.
  • a suction line 38 is assigned to this suction nozzle 17, which also leads to the suction source 32. Since the goods carrier can be moved by the converter with its suction hood 16 over the various treatment troughs, a temporary connection between the suction nozzle 17 and the exhaust air line 38 is created in a respective position of the suction hood 16 via a respective trough 1, which temporary connections in general in such systems are known.
  • the position of the lower edge 18 of the side wall 19 of the suction hood 16 is selected with respect to the opened cover such that a small gap 20 is present between the edge of the cover with the entry area 33 and the lower edge 18 of the side wall 19. This gap 20 generates an air flow from the environment into the suction hood 16 during suction through the suction nozzle 17, so that the gases and / or vapors cannot escape.
  • a plate 23 stands up from the tub rim 21.
  • the dimensions are chosen such that the lower edge 24 of the corresponding side wall 25 of the suction hood 16 and the upper edge of the plate 23 again have a gap 26 through which the air flows from the surroundings into the suction hood 16.
  • the narrow side of the suction hood 16 facing the viewer and facing away from the viewer is pulled down to such an extent that there is also a small gap between the tub edge and its lower edges, through which an air flow takes place inside the suction hood 16.
  • FIGS. 1-3 only one cover is present.
  • versions with two lids according to FIG. 4 are also provided. This means that the system has a reduced height.
  • the suction source 32, the suction nozzle 17 and the suction hood 16 with the side walls 19 and 25 are drawn again.
  • the tub 1 there are now two lids 29, 30, which are also constructed from an upper plate 2 and lower plate 3, which are connected to the hollow shaft 7 are connected for pivoting.
  • the difference between these covers 29, 30 and the only cover of the preceding figures is that the facing edges of the covers 29, 30 (viewed in the closed position) can each have a longitudinal bar 14, 15.

Claims (6)

  1. Dispositif pour la réception de pièces d'oeuvre à soumettre à un traitement de surface, traitement de surface dans lequel se forment des gaz et/ou vapeurs à évacuer, lequel dispositif présente une cuvette (1) avec un volume intérieur pour la réception des pièces d'oeuvre à traiter et une couverture de cuvette (2,3 ; 29,30), qui est mobile entre une position d'ouverture et une position de fermeture et présente un dispositif à canal d'écoulement (2,3,7 ; 29,30) qui contient une zone d'entrée (33) et, du côté sortie, est conformé par la liaison à une source de tirage par aspiration (32) pour l'élimination des gaz et/ou vapeurs formés pendant le traitement de surface, laquelle couverture de cuvette présente au moins un couvercle creux pivotant (2,3) qui forme une section du dispositif à canal d'écoulement (2,3,7), lequel couvercle présente une plaque supérieure (2), extérieure en position de fermeture, et une plaque inférieure (3), intérieure en position de fermeture, tournée vers le volume intérieur de la cuvette, lesquelles plaques (2,3) présentent un écartement relatif de telle sorte qu'au moins une partie (33) de la zone d'entrée s'étend le long de sections périphériques du couvercle respectif (2,3), un tronçon de résistance à l'écoulement (6,13) actif en position de fermeture de la couverture de cuvette, qui sert à opposer une résistance à la sortie des gaz et/ou vapeurs formés pendant le traitement de surface, existant dans la direction d'écoulement des gaz et/ou vapeurs à aspirer entre le volume intérieur de la cuvette et la zone d'entrée (33) du dispositif à canal d'écoulement (2,3,7 ; 29,30) et la plaque inférieure (3) présentant au moins une section d'appui (4) du côté du bord, par laquelle le couvercle respectif s'appuie sur le bord de la cuvette (5) en position de fermeture, la zone d'appui de la section d'appui (4) sur le bord de la cuvette (5) formant une section (6) du tronçon de résistance à l'écoulement.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que le couvercle pivotant (2,3) respectif est relié de manière fixe le long d'un bord à un arbre creux (7) monté pivotant sur la cuvette pour le pivotement du couvercle, qui forme une autre section du dispositif à canal d'écoulement (2,3,7) et dont le volume intérieur (8) est en liaison avec le volume intermédiaire (9) entre les deux plaques (2,3) et qui est conformé pour le raccordement à la source de tirage par aspiration (32).
  3. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que la plaque extérieure (2) du couvercle respectif est à surface plane et la plaque intérieure (3) est en forme de cuvette et présente, en section transversale, des zones de bord (4,12) s'étendant pliées en V de telle manière que, en position de fermeture du couvercle, une section de plaque (12) de la plaque intérieure (3) existe immédiatement à côté d'une section de paroi intérieure de cuvette (11) respective et s'étend parallèlement à celle-ci, à laquelle se raccorde la section d'appui (4) de la plaque inférieure (3), grâce à quoi une fente (13) est formée entre la section de plaque (12) et la section de paroi intérieure de cuvette (11), qui forme une autre section du tronçon de résistance à l'écoulement (6,13).
  4. Dispositif selon l'une des revendications précédentes,
    caractérisé en ce que la couverture de cuvette présente deux couvercles (29,30) pivotant l'un par rapport à l'autre et reliés respectivement à un arbre creux et que les zones de bord des plaques intérieures (3) respectives des couvercles (29,30) se trouvant directement opposées en position de fermeture sont pliées en V en section transversale de telle manière qu'elles présentent des nervures longitudinales (14,15) s'étendant au moins approximativement parallèlement les unes aux autres, formant une fente en position de fermeture (31) et en saillie en direction du volume intérieur de la cuvette de telle sorte que la fente (31) forme un autre tronçon de résistance à l'écoulement entre les bords de couvercle opposés l'un à l'autre.
  5. Installation pour le traitement de surface de pièces d'oeuvre, avec une source de tirage par aspiration et au moins un dispositif selon l'une des revendications 1-3 et avec une pluralité de cuvettes (1) avec couvertures de cuvette (2,3 ; 29,30) pour des traitements de surface différents, qui sont disposées alignées sur une rangée, laquelle installation présente au moins un transporteur pour le transport d'un support de produit et mobile au-dessus de la cuvette, qui présente une chape d'aspiration (16) avec une tubulure d'aspiration (17) qui peut être alignée avec une contre-pièce respective d'une conduite collectrice conduisant à la source d'aspiration, laquelle chape d'aspiration (16) est agencée pour une coopération étanche avec la cuvette (1) respective, la couverture de cuvette respective présentant un couvercle unique monté pivotant sur un bord de la cuvette, le bord inférieur (18) de la paroi latérale (19) de la chape d'aspiration (16) mobile au-dessus de la cuvette, qui est opposé à la région de bord du couvercle ouvert, forme avec celle-ci une fente (20) créant un tronçon de résistance à l'écoulement, et une plaque (23), qui est opposée au bord (22) de la cuvette portant le couvercle faisant saillie par rapport au bord de la cuvette (21), laquelle plaque forme, avec le bord (24) qui lui est frontalement opposé de la paroi latérale (25) de la chape d'aspiration (16) qui lui est opposée, une fente (26) créant un autre tronçon de résistance à l'écoulement.
  6. Installation pour le traitement de surface de pièces d'oeuvre, avec une source de tirage par aspiration et au moins un dispositif selon l'une des revendications 1, 2 ou 4, et avec une pluralité de cuvettes (1) avec couvertures de cuvette (2,3 ; 29,30) pour des traitements de surface différents, qui sont disposées alignées sur une rangée, laquelle installation présente au moins un transporteur pour le transport d'un support de produit et mobile au-dessus de la cuvette, qui présente une chape d'aspiration (16) avec une tubulure d'aspiration (17) qui peut être alignée avec une contre-pièce respective d'une conduite collectrice conduisant à la source d'aspiration, laquelle chape d'aspiration (16) est agencée pour une coopération étanche avec la cuvette (1) respective, la couverture de cuvette (2) respective présentant des couvercles montés pivotants sur des bords opposés de la cuvette et le bord inférieur (18,24) de la paroi latérale (19,25) respective de la chape d'aspiration (16) déplacée au-dessus de la cuvette (1), qui est opposé à la zone de bord du couvercle ouvert respectif, formant avec celle-ci une fente (27,28) créant un tronçon de résistance à l'écoulement.
EP90122064A 1990-11-19 1990-11-19 Installation pour le traitement superficiel d'articles Expired - Lifetime EP0486712B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59006376T DE59006376D1 (de) 1990-11-19 1990-11-19 Vorrichtung zur Aufnahme von einer Oberflächenbehandlung zu unterwerfenden Werkstücken.
AT90122064T ATE108221T1 (de) 1990-11-19 1990-11-19 Vorrichtung zur aufnahme von einer oberflächenbehandlung zu unterwerfenden werkstücken.
EP90122064A EP0486712B1 (fr) 1990-11-19 1990-11-19 Installation pour le traitement superficiel d'articles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90122064A EP0486712B1 (fr) 1990-11-19 1990-11-19 Installation pour le traitement superficiel d'articles

Publications (2)

Publication Number Publication Date
EP0486712A1 EP0486712A1 (fr) 1992-05-27
EP0486712B1 true EP0486712B1 (fr) 1994-07-06

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EP90122064A Expired - Lifetime EP0486712B1 (fr) 1990-11-19 1990-11-19 Installation pour le traitement superficiel d'articles

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EP (1) EP0486712B1 (fr)
AT (1) ATE108221T1 (fr)
DE (1) DE59006376D1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214637C1 (fr) * 1992-04-25 1993-07-15 Kg Favorit-Filterbau Gmbh & Co., 2400 Luebeck, De
DE4421010B4 (de) * 1994-06-20 2004-04-15 Lpw-Anlagen Gmbh Verfahren zur Abreinigung von Gegenständen im Rahmen einer galvanotechnischen Behandlung von Gegenständen in einer galvanotechnischen Anlage und Anlagen für die Durchführung der Verfahren
CH692343A5 (de) * 1997-07-01 2002-05-15 Galvatec Gmbh Absaugvorrichtung einer Wanne.
AT513596B1 (de) 2013-01-31 2014-06-15 Koerner Chemieanlagen Feuerverzinkungsanlage
CN114918217A (zh) * 2022-05-25 2022-08-19 烟台市福源金属表面工程有限公司 一种热镀锌风幕侧吸锌烟环保装置
DE102022125244A1 (de) 2022-09-29 2024-04-04 RENA Technologies GmbH Beckenabdeckung und Anlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE347539B (fr) * 1970-09-04 1972-08-07 Uddeholms Ab
DE2358145C2 (de) * 1973-11-22 1975-11-27 J.G. Schwietzke Metallwerke, 4000 Duesseldorf Haube zum Absaugen der von einem kippbaren, mit einem Deckel versehenen Schmelzofen, insbesondere Induktionsschmelzofen, für Metalle ausgehenden staubbeladenen Dämpfe und Rauchabgase
DE8222850U1 (de) * 1982-08-13 1983-02-17 Mikropul Gesellschaft für Mahl- und Staubtechnik mbH, 5000 Köln Vorrichtung zur erfassung luftfremder stoffe an einem schmelztauchbad
DE3626781A1 (de) * 1986-08-07 1988-02-11 Hell Gmbh & Co Kunststoffbesch Absaughaube zum entfernen von schwebstoffen aus einem behandlungsraum fuer bauteile
DE3634386A1 (de) * 1986-10-09 1988-04-28 Voigt & Schweitzer Gmbh & Co K Vorrichtung zur erfassung luftfremder stoffe an einem tauchbad

Also Published As

Publication number Publication date
DE59006376D1 (de) 1994-08-11
EP0486712A1 (fr) 1992-05-27
ATE108221T1 (de) 1994-07-15

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