EP0071756B1 - Kabine zum Sprühbeschichten von Gegenständen mit Pulver - Google Patents

Kabine zum Sprühbeschichten von Gegenständen mit Pulver Download PDF

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Publication number
EP0071756B1
EP0071756B1 EP82105901A EP82105901A EP0071756B1 EP 0071756 B1 EP0071756 B1 EP 0071756B1 EP 82105901 A EP82105901 A EP 82105901A EP 82105901 A EP82105901 A EP 82105901A EP 0071756 B1 EP0071756 B1 EP 0071756B1
Authority
EP
European Patent Office
Prior art keywords
cabin
powder
floor
spray
filter
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
Application number
EP82105901A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0071756A3 (en
EP0071756A2 (de
Inventor
Roland Gubler
Christian Muttner
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.)
Gema Switzerland GmbH
Original Assignee
Gema Switzerland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gema Switzerland GmbH filed Critical Gema Switzerland GmbH
Priority to AT82105901T priority Critical patent/ATE22236T1/de
Publication of EP0071756A2 publication Critical patent/EP0071756A2/de
Publication of EP0071756A3 publication Critical patent/EP0071756A3/de
Application granted granted Critical
Publication of EP0071756B1 publication Critical patent/EP0071756B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • B05B16/25—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations for both automatic and manual spraying
    • 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
    • B05B14/41—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of the booth
    • 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
    • B05B14/41—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of the booth
    • B05B14/412—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of the booth wherein the walls of the booth is perforated or porous walls and the walls are cleaned of or prevented from being contacted with excess material by a flow of fluid, e.g. air or water, directed into the booth
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B16/00—Spray booths
    • B05B16/90—Spray booths comprising conveying means for moving objects or other work to be sprayed in and out of the booth, e.g. through the booth
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/07—Hoods

Definitions

  • the invention relates to a cabin for spray coating objects with powder according to the features of the preamble of patent claim 1.
  • Such a cabin is known from WO 81/02117. Similar cabins are also known from DE-A-2 731 123 and 2 809 020.
  • the exhaust air purification units arranged on the long sides of the cabin draw powder-containing exhaust air from the cabin interior in the transverse direction of the cabin via filter elements. Powder separated from the exhaust air by the filter elements falls outside the cabin interior into channel-like containers which are arranged below them.
  • the cabin floor is inclined transversely to the longitudinal direction of the cabin and is designed as a slide with a smooth surface. Powder falling on the cabin floor slides sideways out of the cabin interior into containers under the filter elements.
  • DE-A-2 945 934 also shows a cabin consisting of three structural units. Of this, only the middle unit forms a spray coating space with spray devices arranged on the side and with powder reservoir arranged underneath it, covered by a sieve and taking up its entire horizontal cross section. The latter contains a fluid floor and catches falling powder. Powder feed lines lead from the reservoir to the spray devices.
  • the other two units serve as an entrance lock and an exit lock and contain exhaust air cleaning filters and blowers.
  • the fans extract powder-containing exhaust air from the middle unit in the longitudinal direction of the cabin and then through the side slots of the outer units and then into the filter in the longitudinal direction of the cabin. By reversing the air flow through the filter elements, powder adhering to them falls on a fluid floor.
  • the cabin has the disadvantage that it cannot be changed sufficiently, in particular cannot be extended, and requires a lot of space in relation to the spray coating space provided only by the central unit. No objects can be coated in the two outer units.
  • the flow paths from the spray coating room of the middle unit to the filters of the outer lock units are long and not straight, so that strong fans and a lot of energy are required. Powder falling off the filters cannot be driven back into the middle unit only during coating breaks and with strong counter air.
  • DE-A-2 946 436 and DE-B-2 546 920 show cabins in which the exhaust air is drawn down through the cabin floor. This is disadvantageous because it increases the falling speed of the powder. However, the powder should remain in the area of the objects to be coated for as long as possible.
  • DE-A-2 835 474 shows a cabin in which the exhaust air cleaning units are arranged directly below the coating space, so that all the powder falling down falls onto the filter elements of the exhaust air cleaning units.
  • the object of the invention is to provide a compact and easily powder-cleaned cabin of the type mentioned, in particular the filters of the exhaust air purification units being easy to clean and replace, and the cabin should be easily changeable.
  • Advantages of the invention are in particular: small, easily exchangeable filters; Easy access to the cabin through large openings created when changing the filter elements; Gentle sliding of the powder on the slightly inclined, preferably fluidized floor below the filter elements and in the cabin interior; Walls of the cabin easy to clean due to good accessibility; compact design; Powder falling off the filters can fall back into the cabin interior and through the cabin floor into the powder container even without counter air, solely by gravity.
  • Powder means powdery to granular coating material.
  • Fluid floor is a floor from which gas, normally air, emerges through a plurality of openings, which forms an air cushion on the floor from which the powder particles are carried.
  • FIG. 1 There are, for example, three niches 2 on the longitudinal side 1 of the cabin shown in FIG. 1.
  • the blower 6 sucks air out of the cabin via the filter elements 4 whose entire interior can be used as a spray coating room.
  • Powder falling off the filter elements 4 falls onto the cabins, which are designed as slides and are directed obliquely downwards into the cabin and from there falls in the direction of arrow 12 into the cabin interior back onto the cabin floor 8 and over this in the direction of arrows 17 and 18 through a Opening 9 into a container 10.
  • the powder also enters container 10, which is deposited on the cabin floor 8 by gravity in the interior of the cabin.
  • the powder container 10 is expediently covered by a sieve 11 against coarse contaminants. Gelie from a gas source 13 Finished gas sucks powder from the container 10 in an injector 19 and drives it via a line 14 to a spray gun 15 of a spray device for spray coating objects 16. Further compressed air sources 13 serve to supply gas to the counter-blowing elements 5 of the exhaust air cleaning units 3. Arrows 27 essentially show them horizontal suction of exhaust air and powder from the cabin interior to the filter elements of the exhaust air cleaning units.
  • the articles 16 are transported through the cabin by a conveyor 20.
  • Air 16 'extracted from the cabin interior via the filter elements 4 and expelled via the fans 6 has been adequately cleaned of powder by the filter elements 4 and can be put directly into the surrounding work space.
  • the cabin floor 8 is a so-called fluid floor. This consists essentially of two porous, in the longitudinal direction downwardly inclined towards the bottom opening 9. H. with a multiplicity of openings provided longitudinal plates 21 and two transverse plates 22 inclined downwards in the cabin transverse direction to the opening 9. Under the base plates 21 and 22 there are fluid chambers 23 connected to compressed air sources 13. This forms an air cushion over the provided base plates 21 and 22 on which the powder parts float. If the bottom plates, which are inclined in the transverse direction, are arranged at a relatively high angle and are only a short height, then they do not need to be designed as a fluid floor, but can have a smooth, closed surface. In this case, it is sufficient if the bottom parts 21, 23 which are inclined in the longitudinal direction are designed as a fluid bottom.
  • the bottom of the container 10 is formed in a similar manner by a fluid chamber 24 and an upwardly delimiting bottom plate 25 provided as a fluid bottom 26.
  • the conveyor device 20 transports the objects 16 to be coated via an entrance 31 and an exit 32 through the cabin interior.
  • a spray device of the cabin can be a wall element with a hand-held spray gun 15 that can be opened by doors 41.
  • automatically controlled spray guns 42 can also be provided.
  • the doors 41 also allow access to the cabin interior.
  • the spray devices with the spray guns 15 and 42 are all arranged on the same cabin side.
  • Spray devices 43 in the form of prepared wall elements with slots 44 for the passage of guns 15 or 42 can also be provided on the opposite side.
  • spraying devices mean all places in the cabin at which spray guns 15 or 42 can be attached or are attached for spray coating. It is also a particular advantage that the spray devices can be arranged on opposite sides of exhaust air cleaning units 5, 6.
  • the cabin is designed such that exhaust air purification units 5, 6 can also be exchanged for spray devices with guns 15 and 42, respectively. This is possible because the exhaust air purification units 5, 6 return powder separated from the exhaust air back into the part of the cabin interior which is suitable for spray coating due to the construction of the floor and the walls.
  • the cabin is composed of five structural units 45, 46, 47, 48 and 49 in the longitudinal direction. The number of units can be changed as desired. Exhaust air cleaning units on the one cabin side can also be exchanged for exhaust air cleaning units or spray devices on the other cabin side. A reservoir 51 with fresh powder puts fresh powder into the container 10 if necessary.
  • Figure 3 shows an end view of the cabin.
  • FIG. 4 shows that the niches 2 are formed by boxes 53 which are placed on cutouts 54 of the longitudinal sides 1 of the cabin together with the parts 4, 5 and 6 of the exhaust air cleaning units 3 in an easily replaceable manner.
  • the guide elements 7 designed as slides under the filter elements 4 can be designed as closed, smooth elements if their angle of inclination 55 is sufficiently steep that powder can slip off. This angle should be at least 45 ° with respect to a horizontal line, but is preferably 57.5 °. The same applies to the angle of inclination of the individual parts of the cabin floor 8.
  • the guide element 7 is also designed as a fluid floor with a cover plate 56 provided with through openings and a fluid chamber 57 which is connected to a compressed air source 13.
  • the exhaust air is withdrawn from the cabin interior essentially horizontally in accordance with the arrows 27, but rather somewhat from the bottom up to the filter elements 4.
  • the filter elements 4 are arranged so high that their average height 58 is at least the same, but preferably higher than the average height 59 of the cabin interior. Powder falling off the filter elements 4 is designated by 60.
  • the filter elements 4 accommodated therein form, together with the niche rear wall 61, an interchangeable filter unit 62.
  • These filter units 62 are considerably smaller and lighter than the mobile interchangeable filter units of the known cabins and weigh less than 10 kg, preferably only about 5 kg . This makes them easy to carry and quick to replace.
  • clamping elements 63 By means of clamping elements 63, they are pressed upwards in a sealing manner against the adjacent elements 5 and 6. Due to several smaller exhaust air cleaning units 3, the structure of the cabin is more variable than with large filter devices. A filter unit 62 or an entire exhaust air cleaning unit 3 can optionally be exchanged. This opens 54 openings in the Kabi walls and allow access to the cabin interior.
  • An essential feature is that the powder with the exhaust air from the interior of the cabin crosses the longitudinal direction of the cabin without redirection by the shortest route to the filter elements 4 and, after it has fallen off, is returned directly to the interior of the cabin without redirection directly to the longitudinal direction of the cabin. It is also important that powder falling off the filter elements 4 can continuously fall back into the cabin interior through the oblique guide elements 7 even during spray coating operations and without blowing counter air through the filter elements 4.
  • the cabin floor 8 can contain electrodes for generating alternating electrical fields, through which the resulting powder particles are repelled. Powder can be transported in a certain direction by generating migrating alternating electric fields.
  • the German patent specification DE-C-2 248 367 shows such possibilities.
  • a still further embodiment can consist in the fact that the cabin floor is formed by a revolving conveyor belt for collecting and discharging powder according to the German specification DE-B-2 546 920.
EP82105901A 1981-08-10 1982-07-02 Kabine zum Sprühbeschichten von Gegenständen mit Pulver Expired EP0071756B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105901T ATE22236T1 (de) 1981-08-10 1982-07-02 Kabine zum spruehbeschichten von gegenstaenden mit pulver.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3131565 1981-08-10
DE3131565A DE3131565C2 (de) 1981-08-10 1981-08-10 Kabine zum Sprühbeschichten von Gegenständen mit Pulver

Publications (3)

Publication Number Publication Date
EP0071756A2 EP0071756A2 (de) 1983-02-16
EP0071756A3 EP0071756A3 (en) 1983-11-09
EP0071756B1 true EP0071756B1 (de) 1986-09-17

Family

ID=6138997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105901A Expired EP0071756B1 (de) 1981-08-10 1982-07-02 Kabine zum Sprühbeschichten von Gegenständen mit Pulver

Country Status (6)

Country Link
US (1) US4471715A (es)
EP (1) EP0071756B1 (es)
JP (1) JPS5888071A (es)
AT (1) ATE22236T1 (es)
DE (1) DE3131565C2 (es)
ES (1) ES8305600A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905057A1 (de) * 1989-02-18 1990-08-23 Esb Voehringer Pulverspruehkabine mit einer leitvorrichtung fuer rohgas in eine abscheider-saugstroemung

Families Citing this family (30)

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Publication number Priority date Publication date Assignee Title
US4723505A (en) * 1986-03-17 1988-02-09 Nordson Corporation Powder booth
US4704953A (en) * 1986-11-12 1987-11-10 Nordson Corporation Powder spray system
US4730647A (en) * 1986-12-08 1988-03-15 Nordson Corporation Powder feeder apparatus
US4928624A (en) * 1987-02-09 1990-05-29 Overton Jr Duncan E Powder spray booth with overspray collection system
US5036792A (en) * 1989-11-17 1991-08-06 Poly Christian L C De Apparatus for controlling emission, and recovery, of solvents
US5306332A (en) * 1991-05-14 1994-04-26 Air-Gonomics, Inc. Columnar filtering unit for spray painting
US5259879A (en) * 1991-06-27 1993-11-09 Ransburg Corporation Powder application booth liner and method of making it
US5199989A (en) * 1991-07-31 1993-04-06 Ransburg Corporation Powder booth floor wiping mechanism
DE4134701C2 (de) * 1991-10-21 1996-06-05 Gema Volstatic Ag Pulver-Sprühbeschichtungseinrichtung mit alternativ austauschbaren Filter- und Zykloneinheiten
GB9302936D0 (en) * 1993-02-13 1993-03-31 Britton Roger W Coating system
JPH06246206A (ja) * 1993-02-17 1994-09-06 Nordson Corp 複数のフィルターモジュールを備えた粉体スプレーブース
BR9406723A (pt) * 1993-05-25 1996-02-06 Nordson Corp Aparelho para aplicação de material de revestimento em pó a objetos
US5743958A (en) 1993-05-25 1998-04-28 Nordson Corporation Vehicle powder coating system
IT1262626B (it) * 1993-06-04 1996-07-04 Lepido Caselli Cabina perfezionata per la smaltatura di prodotti ceramici,in particolare piastrelle.
DE19523319A1 (de) * 1995-06-27 1997-01-09 Tegometall Int Ag Vorrichtung zur Sprühbeschichtung von Werkstücken mit Farbe
US5833751A (en) * 1996-10-18 1998-11-10 Hoosier Fiberglass Industries, Inc Powder coating booth having smooth internal surfaces
EP1138394A1 (en) * 2000-03-31 2001-10-04 Nordson Corporation Improvements in and relating to powder coating system
US6458209B1 (en) 2000-04-14 2002-10-01 Nordson Corporation Powder coating booth containment structure
US6830620B2 (en) * 2000-04-14 2004-12-14 Nordson Corporation Powder coating booth containment structure
US20020046702A1 (en) * 2000-10-24 2002-04-25 James M. Browning Powder coating system and method for quick color change
US6669780B2 (en) 2000-10-24 2003-12-30 Illinois Tool Works Inc. Color change booth
DE102012004704A1 (de) * 2012-03-07 2013-09-12 Eisenmann Ag Verfahren und Vorrichtung zum Abführen von mit Overspray beladener Prozessluft sowie Anlage zum Beschichten von Gegenständen
DE102013004082A1 (de) * 2013-03-11 2014-09-11 Eisenmann Ag Verfahren zum Betreiben einer Oberflächenbehandlungsanlage, Satz von Filtermodulen und Oberflächenbehandlungsanlage
CN108187957A (zh) * 2017-12-29 2018-06-22 佛山市顺智环保科技有限公司 一种钢管表面喷漆装置
FR3108044B1 (fr) * 2020-03-11 2023-04-28 Exel Ind Embase pour une cabine de poudrage
DE102020113645A1 (de) 2020-05-20 2021-11-25 Gema Switzerland Gmbh Grundkörper für eine beschichtungszelle einer beschichtungsanlage, beschichtungszelle mit einem solchen grundkörper und beschichtungsanlage mit mindestens einer beschichtungszelle
US11878316B2 (en) * 2020-12-15 2024-01-23 Gallagher-Kaiser Corporation Sliding drawer dry filtration system for a paint booth
DE102020134087A1 (de) 2020-12-18 2022-06-23 Gema Switzerland Gmbh Anlage zum beschichten von gegenständen mit beschichtungsmaterial sowie verfahren zum beschichten von gegenständen mit beschichtungsmaterial
EP4249130A1 (de) 2022-03-21 2023-09-27 Gema Switzerland GmbH Beschichtungskabine zum beschichten von werkstücken mit beschichtungsmaterial
DE102022108374A1 (de) 2022-03-21 2023-09-21 Gema Switzerland Gmbh Beschichtungskabine zum beschichten von werkstücken mit beschichtungsmaterial

Family Cites Families (15)

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Publication number Priority date Publication date Assignee Title
DE1962698A1 (de) * 1969-12-13 1971-06-24 Buettner Schilde Haas Ag Spruehkabine
BE789579A (fr) * 1971-10-06 1973-02-01 Masuda Senichi Enceinte pour l'application, au moyen d'un rideau de champs electriquesdu type contact, de revetements formes par des poudres chargees electrostatiquement
DE2212254A1 (de) * 1972-03-14 1973-09-20 E P V Entwicklungs Planungs U Bodenkonstruktion fuer kabinen, in denen eine beschichtung von gegenstaenden mit kunststoffpulver erfolgt
DE2433514A1 (de) * 1974-07-12 1976-01-22 Andrasfalvy K Vorrichtung zur abscheidung von pulvern und staeuben
DE2546920C3 (de) * 1974-11-14 1983-11-17 Ransburg-Gema AG, 9015 St.Gallen Elektrostatische Pulver-Beschichtungsanlage
FR2369878A1 (fr) * 1976-11-03 1978-06-02 Air Ind Installation de poudrage electrostatique
DE2731123A1 (de) * 1977-07-09 1979-01-25 Interesco Int Res Spruehkabine
US4227900A (en) * 1977-12-09 1980-10-14 Nichols John T Apparatus for filtering gas streams
DE2809020B2 (de) * 1978-03-02 1980-08-28 Adolf 7251 Weissach Berkmann Beschichtungskabine für das elektrostatische Auftragen von pulverförmigen Stoffen
CA1133691A (en) * 1978-11-20 1982-10-19 Gunter J. Lissy Powder spray booth
FR2442080A1 (fr) * 1978-11-21 1980-06-20 Europ Equip Menager Installation de poudrage electrostatique d'objets
US4245551A (en) * 1979-03-05 1981-01-20 Nordson Corporation Coating booth for electrostatic application of pulverized materials
FR2465524A1 (fr) * 1979-07-27 1981-03-27 Cepem Installation de poudrage electrostatique
DE3003158A1 (de) * 1980-01-30 1982-03-04 ESB Elektrostatische Sprüh- und Beschichtungsanlagen G.F. Vöhringer GmbH, 7758 Meersburg Vorrichtung zum pulverbeschichten von werkstuecken mit einer das werkstueck zeitweise aufnehmenden spruehkabine
US4303417A (en) * 1980-10-03 1981-12-01 George Koch Sons, Inc. Spray booth with reconditioning filter system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3905057A1 (de) * 1989-02-18 1990-08-23 Esb Voehringer Pulverspruehkabine mit einer leitvorrichtung fuer rohgas in eine abscheider-saugstroemung

Also Published As

Publication number Publication date
EP0071756A3 (en) 1983-11-09
JPH0144383B2 (es) 1989-09-27
DE3131565A1 (de) 1983-05-11
JPS5888071A (ja) 1983-05-26
ES514842A0 (es) 1983-04-16
EP0071756A2 (de) 1983-02-16
US4471715A (en) 1984-09-18
DE3131565C2 (de) 1984-12-13
ATE22236T1 (de) 1986-10-15
ES8305600A1 (es) 1983-04-16

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