EP0230571B1 - Powder coating booth with a bottom filter - Google Patents

Powder coating booth with a bottom filter Download PDF

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Publication number
EP0230571B1
EP0230571B1 EP86116838A EP86116838A EP0230571B1 EP 0230571 B1 EP0230571 B1 EP 0230571B1 EP 86116838 A EP86116838 A EP 86116838A EP 86116838 A EP86116838 A EP 86116838A EP 0230571 B1 EP0230571 B1 EP 0230571B1
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EP
European Patent Office
Prior art keywords
belt
enclosure
nozzle
extraction
longitudinal
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
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EP86116838A
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German (de)
French (fr)
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EP0230571A1 (en
Inventor
Peter Ribnitz
Wilhard Kleineidam
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Ribnitz Peter Dipl-Ing
Original Assignee
Ribnitz Peter Dipl-Ing
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Priority to AT86116838T priority Critical patent/ATE54583T1/en
Publication of EP0230571A1 publication Critical patent/EP0230571A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/20—Arrangements for collecting, re-using or eliminating excess spraying material from moving belts, e.g. filtering belts or conveying belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material

Definitions

  • the present invention relates to a powder coating booth with a bottom filter belt, at least one suction nozzle provided for cleaning the filter belt and at least one suction blower which is operatively connected to the suction nozzle, the suction nozzle being movable to and fro by means of a drive belt.
  • the filter belt In this known cabin, the filter belt is stationary during the coating. A nozzle travels back and forth along the entire length of the belt, with the powder that has fallen down being collected through slots. A connection by means of a hose from this nozzle to the outside has the disadvantage that the hose is always in the area of the coating, which can lead to faults.
  • the width and length of this conveyor belt extend over the entire space from which the powder is sucked off via a suction line.
  • Guide rails are provided on the side of the conveyor belt.
  • the conveyor belt is cleaned here exclusively with the aid of the suction fan, in which case the excess powder definitely falls into the space since the conveyor belt is endless and the paint particles therefore fall off or are sucked away from the underside of the lower run of the conveyor belt.
  • the conveyor belt is sealed to the outside by means of a pair of rollers.
  • This embodiment cannot solve the problem of sealing in powder coating booths with a bottom filter and a movable suction nozzle, since the basic principle of this powder recovery is completely different from that of the present invention. Problems have to be overcome here that do not arise there.
  • the object of the invention is therefore to provide a powder coating booth according to the preamble of claim 1, which does not have the disadvantage mentioned above. According to the invention, this object is achieved by the characterizing features of patent claim 1.
  • the invention offers an optimal solution for the airway of the suction and cleaning as well as further advantageous technical solutions that simplify the color change.
  • the known electrostatic powder coating system 1 shown in FIG. 1 is provided with a cabin 2 in which a device 3 for dispensing electrostatically charged powder is arranged.
  • a filter belt 5 movable through the cabin 2 is provided on the bottom side 10.
  • a first suction fan 35 is connected over a large area in the area of the floor 10 of the cabin 2. It creates a suction field with negative pressure through the filter belt 5 in the cabin 2.
  • a cleaning device 13 assigned to the filter belt 5 serves to remove the excess powder lying on the filter belt 5.
  • actuating means 6, 7 enable the filter band 5 to be retightened by at least one cabin length and thus to assign each filter color to its filter band zone.
  • This multicolor booth represents an optimum in terms of expenditure and time.
  • the powder recovery system is also shown for the sake of completeness, although it does not affect the present invention.
  • Fig. 2 shows the side view of the cabin 2. Its coating space 51 is surrounded by sheet metal walls. A band-shaped bottom filter 52 is fixed on rollers 53 at both ends. The exhaust air is led into the open via a floor pan 58 and an exhaust air duct 59 via a fan, corresponding to the fan 35 in FIG. 1.
  • a suction nozzle 56 is provided, which is moved back and forth via the bottom filter 52 via a drive with one or two drive belts 54 and a motor 55.
  • the two opposing belts 54 which are designed as toothed belts, are coupled by a connecting shaft (not shown) in order to obtain synchronous running.
  • FIG. 4 shows the construction of the bottom filter 52 and the bottom pan 58. It is important for such a system that the air distribution at the bottom filter 52 for the suction is uniform in order to prevent overloading of the individual filter belt segments.
  • the cabin floor When cleaning and changing the color, the cabin floor must be accessible. All of these requirements can best be achieved by covering the floor pan 58 with a perforated plate 61 of approximately 5-20 mm in diameter.
  • a plastic band 60 with, for example round or rectangular, openings of 3-10 is placed over it mm diameter or side length placed so that the air flow is further improved and no damage occurs when changing color by rotating the rollers 53.
  • the nozzle 56 is placed in a so-called guide frame 63 (FIGS. 4, 5).
  • This guide frame 63 is firmly connected on both sides to the drive of the toothed belt 54.
  • the belt 54 is interrupted here and these free ends are connected via the guide frame 63 (Fig. 6).
  • the lead frame 63 is. formed in such a way that a transition of the air to a longitudinal channel 57 via a guide frame end profile 65 is possible at the ends. This profile 65 extends to the beginning of the filter belt. Thereafter, the guide frame 63 consists of two parallel webs, into which nozzle elements 73 forming the nozzle 56 are inserted.
  • the suction nozzle 56 is constructed such that, depending on the bandwidth, it consists of one or more of these elements 73.
  • the reason for this measure is that the individual elements 73 optimally compensate for any unevenness and inaccuracies in the floor filter 52, e.g. of the edition, can adjust.
  • the elements 73 are provided with rubber lips 67 at the top and sides in order to obtain a better seal.
  • the nozzle elements 73 are made of e.g. round or square, made of profiles. Teflon pads 68 are attached to the underside so that the belt abrasion and friction remain as low as possible.
  • Longitudinal slots 64 for suction are either provided continuously with a width of approximately 2-10 mm, or in two rows, mutually offset, which results in improved cleaning.
  • the powder-air mixture is guided from the reciprocating suction nozzle 56 via the guide frame end profiles 65 into the longitudinal channel 57.
  • This consists of, e.g. round or square, profiles with a longitudinal slot 64 on the top.
  • a guide 69 for the guide frame 63 runs therein.
  • the longitudinal slot 64 is also covered by the drive belt 54, which is sucked in by the negative pressure prevailing in the longitudinal channel 66 and thus seals.
  • the air-powder mixture is then brought into a recovery system (FIG. 1) via a suction nozzle 71.
  • a plurality of suction nozzles 71 are preferably attached to the longitudinal channel 57, since this allows the position of the suction system to be optimally selected.
  • a suction nozzle for the walls etc. can be connected to one of the supports 71.
  • a longitudinal channel 66 can be attached to both sides of the cabin (FIG. 3). When changing colors, it is then necessary to clean the nozzle elements and to switch from one longitudinal channel 66 to the other.
  • the suction unit can then be connected to the second longitudinal channel 66 or even be available as a second unit for the next color. This saves time when changing colors because the cleaning effort is reduced.
  • the longitudinal channels 57 are provided with lids 72 at the ends, so that the channel can be quickly cleaned by means of a brush if necessary.
  • Such covers 72 are also attached to the profiles 65 of the guide frame 63.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Coating Apparatus (AREA)
  • Road Signs Or Road Markings (AREA)
  • Body Structure For Vehicles (AREA)
  • Filtering Materials (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

1. Powder coating enclosure comprising a floor filter belt (52), at least one extraction nozzle (56) for filter belt cleaning and at least one suction blower in effective communication with the extraction nozzle (56), which is movable forwards and backwards by means of a drive belt, characterised in that the extraction nozzle (56) is connected with the suction blower via an extraction duct (57) arranged inside the enclosure in the area of the enclosure floor and in that the extraction duct (57) open on one longitudinal side is sealed off by the drive belt.

Description

Die vorliegende Erfindung betrifft eine Pulverbeschichtungskabine mit einem Bodenfilterband, mindstens einer für die Filterbandreinigung vorgesehenen Absaugdüse und mindestens einem mit der Absaugdüse in Wirkverbindung stehendem Sauggebläse, wobei die Absaugdüse mittels eines Antriebsriemens hin- und herbewegbar ist.The present invention relates to a powder coating booth with a bottom filter belt, at least one suction nozzle provided for cleaning the filter belt and at least one suction blower which is operatively connected to the suction nozzle, the suction nozzle being movable to and fro by means of a drive belt.

Bei einer aus EP-A-141778 bekannten Kabine dieser Art treten gewisse Probleme bezüglich des Ueberganges von der sich in Längsrichtung bewegenden Düse zum Absaugsystem auf.In a cabin of this type known from EP-A-141778, certain problems arise with regard to the transition from the longitudinally moving nozzle to the suction system.

Bei dieser bekannten Kabine ist das Filterband während des Beschichtens stationär. Eine Düse wandert über die gesamte Länge des Bandes hin und her, wobei durch Schlitze das herabgefallene Pulver eingesammelt wird. Eine Verbindung mittels Schlauch von dieser Düse zur Aussenseite hat den Nachteil, dass sich der Schlauch immer im Bereich der Beschichtung befindet, was zu Störungen führen kann.In this known cabin, the filter belt is stationary during the coating. A nozzle travels back and forth along the entire length of the belt, with the powder that has fallen down being collected through slots. A connection by means of a hose from this nozzle to the outside has the disadvantage that the hose is always in the area of the coating, which can lead to faults.

Bei Pulverbeschichtungskabinen ist es auch üblich, als Kabinenboden ein Förderband vorzusehen, um das auf den Kabinenboden fallende Pulver wegzuführen (AT-A-338 392). Bei dieser Ausführung erstreckt sich dieses Förderband in seiner Breite und Länge über den ganzen Zwischenraum, von dem aus das Pulver über eine Saugleitung abgesaugt wird. Seitlich des Förderbandes sind Führungsschienen vorgesehen. Das Reinigen des Förderbandes erfolgt hier ausschliessich mit Hilfe des Sauggebläses, indem das überschüssige Pulver auf jeden Fall in den Zwischenraum fällt, da das Förderband endlos ist und mithin die Farbpartikel von der Unterseite des unteren Trums des Förderbandes abfallen bzw. weggesaugt werden. Nach aussen hin erfolgt das Abdichten des Förderbandes mittels eines Walzenpaares.In the case of powder coating booths, it is also common to provide a conveyor belt as the booth floor in order to remove the powder falling onto the booth floor (AT-A-338 392). In this embodiment, the width and length of this conveyor belt extend over the entire space from which the powder is sucked off via a suction line. Guide rails are provided on the side of the conveyor belt. The conveyor belt is cleaned here exclusively with the aid of the suction fan, in which case the excess powder definitely falls into the space since the conveyor belt is endless and the paint particles therefore fall off or are sucked away from the underside of the lower run of the conveyor belt. The conveyor belt is sealed to the outside by means of a pair of rollers.

Diese Ausführung kann das Problem des Abdichtes bei Pulverbeschichtungskabinen mit Bodenfilter und beweglicher Absaugdüse nicht lösen, da schon das Grundprinzip dieser Pulverrückgewinnung völlig verschieden ist von demjenigen der vorliegenden Erfindung. Hier sind Probleme zu bewältigen, welche sich dort gar nicht stellen.This embodiment cannot solve the problem of sealing in powder coating booths with a bottom filter and a movable suction nozzle, since the basic principle of this powder recovery is completely different from that of the present invention. Problems have to be overcome here that do not arise there.

Aufgabe der Erfindung ist es daher, eine Pulverbeschichtungskabine nach dem Oberbegriff des Patentanspruchs 1 zu schaffen, die den oben genannten Nachteil nicht aufweist. Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.The object of the invention is therefore to provide a powder coating booth according to the preamble of claim 1, which does not have the disadvantage mentioned above. According to the invention, this object is achieved by the characterizing features of patent claim 1.

Die Erfindung bietet eine optimale Lösung für den Luftweg der Absaugung und die Reinigung sowie weitere vorteilhafte technische Lösungen, die den Farbwechsel vereinfachen.The invention offers an optimal solution for the airway of the suction and cleaning as well as further advantageous technical solutions that simplify the color change.

Die Erfindung wird anschliessend beispeilsweise anhand einer Zeichnung erläutert.The invention is subsequently explained, for example, with reference to a drawing.

. Es zeigen:. Show it:

  • Fig. 1 eine bekannte elektrostatische Pulverbeschichtungsanlage mit Rückgewinnungsanlage, mit abgehobenen Seitenwänden, in rein schematischer Darstellung,1 shows a known electrostatic powder coating system with a recovery system, with raised side walls, in a purely schematic representation,
  • Fig. 2 die Seitenansicht einer Sprühkabine, rein schematisch,2 is a side view of a spray booth, purely schematically,
  • Fig. 3 eine Vorderansicht der Kabine nach Fig. 2,3 is a front view of the cabin of FIG. 2,
  • Fig. 4 den Uebergang von Absaugdüse zum Längskanal, gemäss Schnittlinie IV-IV der Fig. 2,4 shows the transition from the suction nozzle to the longitudinal channel, according to section line IV-IV of FIG. 2,
  • Fig. 5 einen Ausschnitt einer Aufsicht auf die Düse mit der Düsenhalterung sowie dem Riemenantrieb,5 shows a detail of a top view of the nozzle with the nozzle holder and the belt drive,
  • Fig. 6 die Düsenhalterung mit der Zahnriemenbefestigung im Schnitt, gemäss Linie VI-VI der Fig. 4.6 shows the nozzle holder with the toothed belt attachment in section, according to line VI-VI of FIG. 4.

Die in Fig. 1 dargestellte, bekannte elektrostatische Pulverbeschichtungsanlage 1 ist mit einer Kabine 2 versehen, in der eine Einrichtung 3 zur Abgabe von elektrostatisch aufgeladenem Pulver angeordnet ist. Im Innenraum der Kabine 2 ist bodenseitig 10 ein durch die Kabine 2 bewegbares Filterband 5 vorgesehen. Ein erstes Sauggebläse 35 ist grossflächig im Bereich des Bodens 10 der Kabine 2 angeschlossen. Es erzeugt durch das Filterband 5 hindurch in der Kabine 2 ein Saugfeld mit Unterdruck. Eine dem Filterband 5 zugeordnete Reinigungseinrichtung 13 dient der Entfernung des auf dem Filterband 5 liegenden überschüssigen Pulvers. Betätigungsmittel 6, 7 ermöglichen bei Farbwechsel, das Filterband 5 um mindestens eine Kabinenlänge nachzuziehen und damit jeder Farbe ihre Filterbandzone zuzuteilen. Diese Mehrfarbenkabine stellt aufwands-und zeitmässig ein Optimum dar. Die Pulverrückgewinnungsanlage ist der Vollständigkeit halber auch dargestellt, obschon sie die vorliegende Erfindung nicht berührt.The known electrostatic powder coating system 1 shown in FIG. 1 is provided with a cabin 2 in which a device 3 for dispensing electrostatically charged powder is arranged. In the interior of the cabin 2, a filter belt 5 movable through the cabin 2 is provided on the bottom side 10. A first suction fan 35 is connected over a large area in the area of the floor 10 of the cabin 2. It creates a suction field with negative pressure through the filter belt 5 in the cabin 2. A cleaning device 13 assigned to the filter belt 5 serves to remove the excess powder lying on the filter belt 5. When changing colors, actuating means 6, 7 enable the filter band 5 to be retightened by at least one cabin length and thus to assign each filter color to its filter band zone. This multicolor booth represents an optimum in terms of expenditure and time. The powder recovery system is also shown for the sake of completeness, although it does not affect the present invention.

Fig. 2 stellt die Seitenansicht der Kabine 2 dar. Deren Beschichtungsraum 51 wird von Blechwänden umgeben. Ein bandförmiges Bodenfilter 52 wird an beiden Enden auf Walzen 53 fixiert. Die Abluft wird über eine Bodenwanne 58 und einen Abluftkanal 59 über einen Ventilator, entsprechend dem Ventilator 35 in Fig. 1, ins Freie geführt.Fig. 2 shows the side view of the cabin 2. Its coating space 51 is surrounded by sheet metal walls. A band-shaped bottom filter 52 is fixed on rollers 53 at both ends. The exhaust air is led into the open via a floor pan 58 and an exhaust air duct 59 via a fan, corresponding to the fan 35 in FIG. 1.

Für die Bandreinigung ist eine Absaugdüse 56 vorgesehen, die über einen Antrieb mit einem bzw. zwei Antriebsriemen 54 und einem Motor 55 über das Bodenfilter 52 hin- und herbewegt wird. Die beiden gegenüberliegenden Riemen 54, als Zahnriemen ausgebildet, sind durch eine Verbindungswelle gekoppelt (nicht dargestellt), um einen synchronen Lauf zu erhalten.For the belt cleaning, a suction nozzle 56 is provided, which is moved back and forth via the bottom filter 52 via a drive with one or two drive belts 54 and a motor 55. The two opposing belts 54, which are designed as toothed belts, are coupled by a connecting shaft (not shown) in order to obtain synchronous running.

In Fig. 4 ist die Konstruktion des Bodenfilters 52 sowie der Bodenwanne 58 gezeigt. Wichtig für eine solche Anlage ist es, dass die Luftverteilung am Bodenfilter 52 für die Absaugung gleichmässig ist, um Ueberlastungen der einzelnen Filterbandsegmente zu verhindern. Beim Reinigen und Farbwechsel muss aber der Kabinenboden unbedingt begehbar sein. All diese Anforderungen können am besten dadurch erreicht werden, dass die Bodenwanne 58 mit einem Lochblech 61 von ca. 5-20 mm Durchmesser bedeckt wird. Darüber wird ein Kunststoffband 60 mit, z.B. runden oder rechteckigen, Oeffnungen von 3-10 mm Durchmesser bzw. Seitenlänge gelegt, damit die Luftführung weiter verbessert wird und bei Farbwechsel durch Drehen der Walzen 53 keine Beschädigung auftritt. Beim Farbwechsel ist es auch wichtig, dass der Arbeiter nicht durch die wandernde Düse verletzt wird. Dies geschieht durch den Einbau einer Rutschkupplung 62 im Zahnriemenantrieb.4 shows the construction of the bottom filter 52 and the bottom pan 58. It is important for such a system that the air distribution at the bottom filter 52 for the suction is uniform in order to prevent overloading of the individual filter belt segments. When cleaning and changing the color, the cabin floor must be accessible. All of these requirements can best be achieved by covering the floor pan 58 with a perforated plate 61 of approximately 5-20 mm in diameter. A plastic band 60 with, for example round or rectangular, openings of 3-10 is placed over it mm diameter or side length placed so that the air flow is further improved and no damage occurs when changing color by rotating the rollers 53. When changing colors, it is also important that the worker is not injured by the moving nozzle. This is done by installing a slip clutch 62 in the toothed belt drive.

Für die Funktion dieses Systems ist von entscheidender Bedeutung, dass die Absaugung des Pulvers gut erfolgt, da sonst die Reinigung nicht gewährleistet ist. Die Düse 56 wird in einen sogenannten Führungsrahmen 63 eingelegt (Fig. 4, 5). Dieser Führungsrahmen 63 ist auf beiden Seiten mit dem Antrieb der Zahnriemen 54 fest verbunden. Der Riemen 54 ist hier unterbrochen und diese freien Enden werden über den Führungsrahmen 63 verbunden (Fig. 6).For the function of this system, it is crucial that the powder is extracted well, otherwise cleaning is not guaranteed. The nozzle 56 is placed in a so-called guide frame 63 (FIGS. 4, 5). This guide frame 63 is firmly connected on both sides to the drive of the toothed belt 54. The belt 54 is interrupted here and these free ends are connected via the guide frame 63 (Fig. 6).

Der Führungsrahmen 63 ist. so ausgebildet, dass an den Enden ein Uebergang der Luft auf einen Längskanal 57 über ein Führungsrahmenendprofil 65 möglich ist. Dieses Profil 65 reicht bis zum Filterbandanfang. Danach besteht der Führungsrahmen 63 aus zwei parallelen Stegen, in welche die Düse 56 bildende Düsenelemente 73 eingelegt sind.The lead frame 63 is. formed in such a way that a transition of the air to a longitudinal channel 57 via a guide frame end profile 65 is possible at the ends. This profile 65 extends to the beginning of the filter belt. Thereafter, the guide frame 63 consists of two parallel webs, into which nozzle elements 73 forming the nozzle 56 are inserted.

Die Absaugdüse 56 ist so aufgebaut, dass sie, abhängig von der Bandbreite, aus einem oder mehreren dieser Elemente 73 besteht. Der Grund dieser Massnahme liegt darin, dass sich die einzelnen Elemente 73 optimal allfälligen Unebenheiten und Ungenauigkeiten des Bodenfilters 52, z.B. der Auflage, anpassen können.The suction nozzle 56 is constructed such that, depending on the bandwidth, it consists of one or more of these elements 73. The reason for this measure is that the individual elements 73 optimally compensate for any unevenness and inaccuracies in the floor filter 52, e.g. of the edition, can adjust.

An einem Ende sind oben und seitlich die Elemente 73 mit Gummilippen 67 versehen, um eine bessere Abdichtung zu erhalten. Die Düsenelemente 73 sind aus, z.B. runden oder viereckigen, Profilen gemacht. An der Unterseite sind Teflonauflagen 68 angebracht, damit der Bandabrieb und die Reibung möglichst gering bleiben. Dem Absaugen dienende Längsschlitze 64 sind entweder durchgehend mit ca. 2-10 mm Breite vorgesehen, oder in zwei Reihen, gegenseitig versetzt, was eine verbesserte Reinigung ergibt.At one end, the elements 73 are provided with rubber lips 67 at the top and sides in order to obtain a better seal. The nozzle elements 73 are made of e.g. round or square, made of profiles. Teflon pads 68 are attached to the underside so that the belt abrasion and friction remain as low as possible. Longitudinal slots 64 for suction are either provided continuously with a width of approximately 2-10 mm, or in two rows, mutually offset, which results in improved cleaning.

Von der hin- und herbewegten Absaugdüse 56 wird im Betrieb das Pulver-Luftgemisch über die Führungsrahmen-Endprofile 65 in den Längskanal 57 geführt. Dieser besteht aus, z.B. runden oder viereckigen, Profilen mit einem Längsschlitz 64 an der Oberseite. Darin läuft eine Führung 69 für den Führungsrahmen 63. Abgedeckt wird im übrigen der Längsschlitz 64 durch den Antriebsriemen 54, der durch den im Längskanal 66 herrschenden Unterdruck angesaugt wird und somit dichtet. Über einen Absaugstutzen 71 wird dann das Luft-Pulvergemisch in eine Rückgewinnungsanlage (Fig. 1) gebracht. Vorzugsweise werden am Längskanal 57 mehrere Absaugstutzen 71 angebracht, da dadurch die Lage des Absaugsystems optimal gewählt werden kann. Beim Reinigen kann an einem der Stützen 71 eine Saugdüse für die Wände etc. angeschlossen werden.During operation, the powder-air mixture is guided from the reciprocating suction nozzle 56 via the guide frame end profiles 65 into the longitudinal channel 57. This consists of, e.g. round or square, profiles with a longitudinal slot 64 on the top. A guide 69 for the guide frame 63 runs therein. The longitudinal slot 64 is also covered by the drive belt 54, which is sucked in by the negative pressure prevailing in the longitudinal channel 66 and thus seals. The air-powder mixture is then brought into a recovery system (FIG. 1) via a suction nozzle 71. A plurality of suction nozzles 71 are preferably attached to the longitudinal channel 57, since this allows the position of the suction system to be optimally selected. When cleaning, a suction nozzle for the walls etc. can be connected to one of the supports 71.

Bei Mehrfarbenanlagen kann an beiden Seiten der Kabine ein Längskanal 66 angebracht werden (Fig. 3). Hier ist es beim Farbwechsel dann nötig, die Düsenelemente zu reinigen und vom einen Längskanal 66 auf den anderen umzustellen.In multi-color systems, a longitudinal channel 66 can be attached to both sides of the cabin (FIG. 3). When changing colors, it is then necessary to clean the nozzle elements and to switch from one longitudinal channel 66 to the other.

Die Absaugeinheit kann dann am zweiten Längskanal 66 angeschlossen werden oder sogar als zweite Einheit für die nächste Farbe zur Verfügung stehen. Dies spart beim Farbwechsel weiter Zeit, da der Reinigungsaufwand verringert wird.The suction unit can then be connected to the second longitudinal channel 66 or even be available as a second unit for the next color. This saves time when changing colors because the cleaning effort is reduced.

Die Längskanäle 57 sind an den Enden mit Deckeln 72 versehen, so dass der Kanal mittels Bürste bei Bedarf rasch gereinigt werden kann. Solche Deckel 72 sind auch an dem Profilen 65 des Führungsrahmens 63 angebracht.The longitudinal channels 57 are provided with lids 72 at the ends, so that the channel can be quickly cleaned by means of a brush if necessary. Such covers 72 are also attached to the profiles 65 of the guide frame 63.

Claims (8)

1. Powder coating enclosure comprising a floor filter belt (52), at least one extraction nozzle (56) for filter belt cleaning and at least one suction blower in effective communication with the extraction nozzle (56), which is movable forwards and backwards by means of a drive belt, characterised in that the extraction nozzle (56) is connected with the suction blower via an extraction duct (57) arranged inside the enclosure in the area of the enclosure floor and in that the extraction duct (57) open on one longitudinal side is sealed off by the drive belt.
2. Enclosure according to claim 1, characterised in that the belt (54) is interrupted and attached to the transverse guide frame (63) in such a way that the power-and-air current can enter the longitudinal duct (57) in any position through the nozzle (56) and a section (65) in a guide frame (63).
3. Enclosure according to claim 1 or 2, characterised in that the nozzle is inserted into a guide frame (63) and consists of one or several elements (73), which are sealed off against other by rubber lips (67).
4. Enclosure according to any of claims 1 to 3, characterised in that the longitudinal extraction duct (57) consists of a section and is provided with a longitudinal slot (64) over the entire belt length and is closed off by removable covers (72) at the ends for easier cleaning.
5. Enclosure according to any of claims 1 to 4, characterised in that a slotted longitudinal duct (57) is provided on both sides of the enclosure and that the nozzle elements (76) are inserted selectively in such a way as to allow extraction to be moved according to colour from one side to the other in the longitudinal duct (76).
6. Enclosure according to any of claims 1 to 5, characterised in that the longitudinal extraction duct (57) has at least one further connection in addition to the return connection (71), which can be used for connecting a suction hose during cleaning of the enclosure.
7. Enclosure according to any of claims 1 to 6, characterised in that the belt (54) is shaped as a toothed belt.
8. Enclosure according to any of claims 1 to 7, characterised by a sliding clutch (62) in the belt drive.
EP86116838A 1986-01-08 1986-12-03 Powder coating booth with a bottom filter Expired - Lifetime EP0230571B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86116838T ATE54583T1 (en) 1986-01-08 1986-12-03 POWDER COATING BOOTH WITH FLOOR FILTER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH162/86A CH665966A5 (en) 1986-01-08 1986-01-08 POWDER COATING CABIN WITH FLOOR FILTER AND EXTRACTION SYSTEM.
CH162/86 1986-01-08

Publications (2)

Publication Number Publication Date
EP0230571A1 EP0230571A1 (en) 1987-08-05
EP0230571B1 true EP0230571B1 (en) 1990-07-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116838A Expired - Lifetime EP0230571B1 (en) 1986-01-08 1986-12-03 Powder coating booth with a bottom filter

Country Status (7)

Country Link
EP (1) EP0230571B1 (en)
JP (1) JPH0741196B2 (en)
AT (1) ATE54583T1 (en)
CH (1) CH665966A5 (en)
DE (1) DE3672799D1 (en)
ES (1) ES2015869B3 (en)
GR (1) GR3000938T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8907538U1 (en) * 1989-06-16 1990-10-18 Farb-Tec Gesellschaft für Beschichtungskabinen-Systeme mbH, 2000 Hamburg Booth for spray coating objects with powder coating material
DE4413347A1 (en) * 1994-04-18 1995-10-26 Boellhoff Verfahrenstech Powder coating booth
US20090151569A1 (en) * 2005-12-08 2009-06-18 Yi-Chen Hsieh Exhaust Processor for Coating Machine
CN101905229A (en) * 2010-08-09 2010-12-08 江苏绿盛环境工程有限公司 Movable type exhaust hood for workshop ventilation
CN102935313A (en) * 2012-11-23 2013-02-20 浙江明泉工业涂装有限公司 Filter element recoverer
IT201600076526A1 (en) * 2016-07-21 2018-01-21 Geico Spa Spray booth with overspray filtering system with replaceable mat
CN115475813B (en) * 2022-09-15 2023-05-16 四川同佳环保科技有限责任公司 Smoke and dust waste gas environmental protection processing system for pit modeling workshop

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH562639A5 (en) * 1973-07-19 1975-06-13 Gema Ag
DE3015129A1 (en) * 1980-04-19 1981-10-22 Horst 4600 Dortmund Ludscheidt Vehicle exhaust channel outlet for workshops and test benches - has disc seals rotatably interconnected in channel and guided to allow carriage sucker into channel slot
DE3041350A1 (en) * 1980-11-03 1982-06-03 Horst 4600 Dortmund Ludscheidt Noxious media exhaustion equipment - has travelling carriages on conduit on suction carriage travelling along stationary one
FR2490112A1 (en) * 1980-09-12 1982-03-19 Sietam Installation for surface treatment - has articles dipped in treating tanks and aspirator removes fumes emitted
DE3305533C2 (en) * 1983-02-18 1985-09-19 Horst 4600 Dortmund Ludscheidt Device for sucking off pollutants
EP0141778B1 (en) * 1983-09-08 1988-03-09 Peter Dipl.-Ing. Ribnitz Electrostatic powder coating installation
DE8326482U1 (en) * 1983-09-15 1985-02-28 Gebr. Noggerath, 2000 Hamburg DEVICE FOR SUCTIONING GAS-BASED POLLUTANTS
DE3337096C2 (en) * 1983-10-12 1994-04-14 Wilms Gmbh Extraction system for surface treatment or painting systems

Also Published As

Publication number Publication date
CH665966A5 (en) 1988-06-30
JPS62225270A (en) 1987-10-03
EP0230571A1 (en) 1987-08-05
GR3000938T3 (en) 1991-12-10
ES2015869B3 (en) 1990-09-16
DE3672799D1 (en) 1990-08-23
ATE54583T1 (en) 1990-08-15
JPH0741196B2 (en) 1995-05-10

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