WO1998046368A1 - Procede et dispositif pour la recuperation de particules de peinture projetees - Google Patents

Procede et dispositif pour la recuperation de particules de peinture projetees Download PDF

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Publication number
WO1998046368A1
WO1998046368A1 PCT/DE1998/001049 DE9801049W WO9846368A1 WO 1998046368 A1 WO1998046368 A1 WO 1998046368A1 DE 9801049 W DE9801049 W DE 9801049W WO 9846368 A1 WO9846368 A1 WO 9846368A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
cabin
filter
particles
water film
Prior art date
Application number
PCT/DE1998/001049
Other languages
German (de)
English (en)
Inventor
Günther HAUSER
Torsten Hoeft
Original Assignee
Logistik Zentrum Institut Für Materialfluss Logistik Und Expertensysteme 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 Logistik Zentrum Institut Für Materialfluss Logistik Und Expertensysteme Gmbh filed Critical Logistik Zentrum Institut Für Materialfluss Logistik Und Expertensysteme Gmbh
Priority to AU82057/98A priority Critical patent/AU8205798A/en
Publication of WO1998046368A1 publication Critical patent/WO1998046368A1/fr

Links

Classifications

    • 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
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B05B14/465—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material using substantially vertical liquid curtains or wetted walls behind the object to be sprayed
    • 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
    • B05B14/42—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths using electrostatic means
    • 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
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B05B14/462—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material and separating the excess material from the washing liquid, e.g. for recovery
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the invention relates to a method for recovering paint particles sprayed in a cabin as a paint cloud.
  • the invention further relates to an apparatus for performing the method.
  • the powder coating of workpieces with color particles is carried out in cabins whose cabin walls are made of corrosion-protected sheet metal or plastic plates.
  • the powder coating is carried out with paint particles brought to an electrical potential, the workpiece being brought to an opposite-pole electrical potential. Nevertheless, a not inconsiderable part of the paint particles does not get onto the workpiece to be coated, but is deposited on the cabin walls as an overspray paint cloud, which must therefore be laboriously cleaned from time to time.
  • the booths are usually placed under a certain vacuum by a suction device to ensure that air is always sucked in from the outside, ie none
  • Color particles can get out of the cabin.
  • the dye particles entrained in the extracted air have to be removed from the air flow, which can be done with an electrostatic filter, for example.
  • the invention has for its object to facilitate the cleaning of the powder coating systems and to enable an environmentally friendly procedure.
  • a method of the type mentioned is according to the invention characterized in that a laminar flowing water film is ⁇ formed on at least a portion of the cabin walls, is applied to a high voltage, so that the ink particles on the surface of the water film from the interior region Be passed cabin, and that the paint particles are separated from the water and dried and paint particles and water are reused.
  • the overspray color cloud is deposited on the water surface and is passed from the interior of the coating booth with the water, preferably into a filter centrifuge, and there mechanically separated from the water as a carrier.
  • the water flows back into the collection container, while the filtered colored powder pulp is processed with low residual moisture, preferably in a low-temperature dryer.
  • the drying process can be combined with a sieving process in order to return the powder to the homogeneous starting state and to feed it directly into the powder storage container.
  • the surface wetting with water also neutralizes the electrical charge of the powder particles, so that the initial state is produced not only mechanically but also electrically.
  • Circulation of the powder which enables 100% recycling of the overspray.
  • an air stream can also be extracted from the cabin and cleaned with an electrostatic filter. It is particularly advantageous if the air flow in the electrostatic filter is cleaned with laminar flowing water electrodes and the loaded water of the electrostatic filter is treated with the water of the water film.
  • the water treatment can preferably be carried out with a two-stage filtering process, in which a very fine fraction the color particle is discarded.
  • the wet process according to the invention includes, as a side effect, an increase in the security against dust explosions and also enables a previously impossible clean room coating if the previously customary airlock is designed as an air curtain, so that no dust particles are sucked into the coating chamber from the outside.
  • a device for carrying out the method with a cabin with a paint spray device, a holder for workpieces to be coated and a suction device for generating a vacuum in the cabin by a sprinkler device arranged in the upper region of the cabin to form a water film on cabin walls, a voltage source for applying a high voltage to the water film, a discharge of the drained water to a filter, a return of the cleaned water in a water cycle and through a drying stage and a return of the separated paint particles to a paint particle cycle.
  • the filter is preferably formed by a filter centrifuge which can be cascaded in two stages to separate an undesired fine particle fraction.
  • the again risen and cleaned water shows no turbidity and can be conveyed to the cabin cover by a circulating pump and distributed to a water film on the walls via nozzle pipes, so that the water cycle is continuous acting transport mechanism is closed.
  • the water can be optimized in terms of processability in terms of wetting ability, limescale content, ionic content, etc.
  • Antibacterial radiation with UV-C is also possible.
  • all components of the cabin in particular all cabin walls, can be cleaned continuously during operation. After the system has run dry, when there is no more powder in the circulating water, a color change is possible without any problems, since all internal components are clean and there are no color residues.
  • the closed cycles separated into powder and water cycles, prevent interaction with the environment.
  • coating costs are reduced because the powder material is saved.
  • a workpiece 2 which has been fed via a workpiece transport system 3, is held for coating.
  • a spray device 4 sprays dye particles 5 against the workpiece 2, but essential parts of the workpiece 2 are sprayed in the direction of a cabin wall 6.
  • a water film 8 is generated on the cabin walls 6, which runs laminarly on the walls 6.
  • the cabin 1 has a suction opening 9, to which a suction fan 10 is connected via an electrostatic filter 11.
  • the electrostatic filter 11 acts a supply of high voltage to the water film 8 and a separation of the dye particles 5 from the air stream sucked off via the blower 10.
  • the electrostatic filter 11 works with laminar-flowing water electrodes, so that water loaded with dye particles is fed from the electrostatic filter to a filter 12 designed as a filter centrifuge.
  • the water of the water film 8 comes out of a drain opening 13 of the cabin together with the dye particles 5 adhering to the water surface and also reaches the filter 12, in which the
  • Dye particles 5 are separated from the water.
  • the cleaned water enters a water collecting container 14 and is pumped back into a water circuit 17 by means of a circulation pump 15, from which the sprinkler device 7 and the electrostatic filter 11 are fed.
  • the powdered pulp filtered in the filter 12 passes into a dryer 15, where it is dried at a low temperature.
  • the dryer 15 is followed by a sieve stage 18 and a fresh powder supplement 19.
  • the sieved powder passes into a powder storage container 20 and from there into a powder circuit 21 to the spray device 4.
  • two closed circuits 17, 21 are formed for the water and the powder, which overlap in the area of the water film 8, the electrostatic filter 11 and the filter 12, but are otherwise formed separately.
  • dashed arrows are shown at openings of the cabin 1 and inside the cabin 1, which illustrate an open air circuit that leads to the blower 10 via the suction opening 9 and the electrostatic filter 11.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)

Abstract

Selon l'invention, pour maintenir propres les parois (6) d'une cabine (1) et pour récupérer des particules de peinture (5) projetées sous la forme d'un nuage de peinture dans ladite cabine (1), on forme, sur au moins une partie des parois (6) de la cabine, un film d'eau (8) s'écoulant de façon laminaire et auquel une haute tension est appliquée, de sorte que les particules de peinture (5) se trouvant à la surface du film d'eau (8) sont sorties de la zone intérieure de la cabine (1). Les particules de peinture (5) sont séparées de l'eau et séchées. Les particules de peinture et l'eau sont réutilisées.
PCT/DE1998/001049 1997-04-15 1998-04-14 Procede et dispositif pour la recuperation de particules de peinture projetees WO1998046368A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU82057/98A AU8205798A (en) 1997-04-15 1998-04-14 Method and device for recovering sprayed paint particles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19758451A DE19758451C2 (de) 1997-04-15 1997-04-15 Verfahren und Vorrichtung zur Rückgewinnung von Farbpulver-Overspray
DE19758451.9 1997-04-15

Publications (1)

Publication Number Publication Date
WO1998046368A1 true WO1998046368A1 (fr) 1998-10-22

Family

ID=7853697

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001049 WO1998046368A1 (fr) 1997-04-15 1998-04-14 Procede et dispositif pour la recuperation de particules de peinture projetees

Country Status (3)

Country Link
AU (1) AU8205798A (fr)
DE (1) DE19758451C2 (fr)
WO (1) WO1998046368A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115318530A (zh) * 2022-10-18 2022-11-11 南通苏禾车灯配件有限公司 一种汽车配件加工喷涂设备

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024925A1 (de) * 2000-05-19 2001-11-29 Juergen Kemper Verfahren und Vorrichtung zur Beaufschlagung von Objekten mit einem pulverförmigen Stoff, insbesondere zur Beschichtung mit Pulverlack
DE102008046414A1 (de) 2008-09-04 2010-03-18 Eisenmann Anlagenbau Gmbh & Co. Kg Vorrichtung zum Abscheiden von Lack-Overspray
DE102011113708B4 (de) * 2011-09-17 2015-07-23 Eisenmann Ag Verfahren zum Abscheiden von Overspray
DE102012009723A1 (de) * 2012-05-16 2013-11-21 Eisenmann Ag Vorrichtung zum Abscheiden von Overspray sowie Anlage mit einer solchen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856476A (en) * 1968-04-24 1974-12-24 Seversky Electronatom Corp High velocity wet electrostatic precipitation for removing gaseous and particulate contaminants
EP0280360A1 (fr) * 1987-02-21 1988-08-31 Metallgesellschaft Ag Procédé et dispositif pour purifier l'air évacué d'une cabine de peinture
WO1990012649A1 (fr) * 1989-04-25 1990-11-01 ABB Fläkt AB Amenagement pour nettoyer l'air de ventilation pollue par des particules de peinture
US5169673A (en) * 1990-03-19 1992-12-08 Demeny Gary L Method and apparatus for electrostatically spray painting objects in a spray paint booth
EP0523415A2 (fr) * 1991-07-13 1993-01-20 EISENMANN MASCHINENBAU KG (Komplementär: EISENMANN-Stiftung) Procédé de séparation et de récupération pour peintures diluables à l'eau dans les cabines de pulvérisation ainsi que le système d'installation pour la mise en oeuvre du procédé
DE4123285A1 (de) * 1991-07-13 1993-01-21 Gema Volstatic Ag Spruehbeschichtungsanlage fuer fluessiges beschichtungsmaterial

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3940085A1 (de) * 1989-12-04 1991-06-06 Columbus System Patent Ag Vorrichtung fuer das elektrostatische pulverbeschichten von gegenstaenden

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856476A (en) * 1968-04-24 1974-12-24 Seversky Electronatom Corp High velocity wet electrostatic precipitation for removing gaseous and particulate contaminants
EP0280360A1 (fr) * 1987-02-21 1988-08-31 Metallgesellschaft Ag Procédé et dispositif pour purifier l'air évacué d'une cabine de peinture
WO1990012649A1 (fr) * 1989-04-25 1990-11-01 ABB Fläkt AB Amenagement pour nettoyer l'air de ventilation pollue par des particules de peinture
US5169673A (en) * 1990-03-19 1992-12-08 Demeny Gary L Method and apparatus for electrostatically spray painting objects in a spray paint booth
EP0523415A2 (fr) * 1991-07-13 1993-01-20 EISENMANN MASCHINENBAU KG (Komplementär: EISENMANN-Stiftung) Procédé de séparation et de récupération pour peintures diluables à l'eau dans les cabines de pulvérisation ainsi que le système d'installation pour la mise en oeuvre du procédé
DE4123285A1 (de) * 1991-07-13 1993-01-21 Gema Volstatic Ag Spruehbeschichtungsanlage fuer fluessiges beschichtungsmaterial

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115318530A (zh) * 2022-10-18 2022-11-11 南通苏禾车灯配件有限公司 一种汽车配件加工喷涂设备

Also Published As

Publication number Publication date
DE19758451A1 (de) 1998-10-29
AU8205798A (en) 1998-11-11
DE19758451C2 (de) 1999-10-21

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