EP0525303A1 - Dispositif d'alimentation d'un appareil de revêtement avec un mélange air-poudre - Google Patents

Dispositif d'alimentation d'un appareil de revêtement avec un mélange air-poudre Download PDF

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Publication number
EP0525303A1
EP0525303A1 EP92106291A EP92106291A EP0525303A1 EP 0525303 A1 EP0525303 A1 EP 0525303A1 EP 92106291 A EP92106291 A EP 92106291A EP 92106291 A EP92106291 A EP 92106291A EP 0525303 A1 EP0525303 A1 EP 0525303A1
Authority
EP
European Patent Office
Prior art keywords
powder
air
container
fluidizing
metering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP92106291A
Other languages
German (de)
English (en)
Other versions
EP0525303B2 (fr
EP0525303B1 (fr
Inventor
Radovan Dipl.-Ing. Talacko
Maximilian Matt
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.)
Wagner International AG
Original Assignee
Wagner International AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6435002&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0525303(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wagner International AG filed Critical Wagner International AG
Publication of EP0525303A1 publication Critical patent/EP0525303A1/fr
Application granted granted Critical
Publication of EP0525303B1 publication Critical patent/EP0525303B1/fr
Publication of EP0525303B2 publication Critical patent/EP0525303B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material

Definitions

  • the invention relates to a device for feeding powder coating devices with a powder-air mixture.
  • the applicators i.e. the powder spray guns
  • the powder spray guns must be supplied with the powder in the form of a powder-air mixture, with an as uniform as possible distribution and an accurate and constant metering of the powder particles in the powder-air stream being particularly important for uniform coating are.
  • the coating powder is usually prepared in special storage containers.
  • These storage containers have a fluidizing and conveying device.
  • a storage container is known from DE-PS 36 11 039.
  • With the type of fluidizing and conveying device described there it is difficult to carry out an exact conveying and metering. This disadvantage is exacerbated by generally long delivery lines from the generally very large powder storage container to the remote powder coating device.
  • An advantage of the solutions according to the invention can be seen in the fact that by separating the air from the incoming powder-air mixture, fluidizing and metering the remaining powder in a metering container assigned to a single powder coating device, the composition and volume of the powder-air stream of the desired coating quality can be adapted, despite the fact that only a single storage container is provided for several powder coating devices. It is essential for the dosing accuracy that the fluidizing air is first excreted from the powder-air mixture arriving from the storage container, and that the remaining powder is then fluidized and dosed again in a defined manner.
  • Another advantage of the invention results from the relatively short conveying path from the metering container - which can be accommodated in a small design in close proximity to the coating device - to the associated powder coating device, as a result of which the conveying uniformity is significantly less impaired than with conventional long conveying lines.
  • the use of a dosing container enables the operation of a powder coating device assigned to it, even when the storage container is not conveying, at least for a certain period of time which is dependent on the volume of the dosing container.
  • FIG. 1 shows a schematic representation of the device with a storage container 1, delivery lines 2 and 4, a dosing container 3 and a powder coating device 5.
  • a storage container 1 shows a schematic representation of the device with a storage container 1, delivery lines 2 and 4, a dosing container 3 and a powder coating device 5.
  • the conveying line 4 from the metering container to the powder coating device is generally short compared to the conveying line 2 from the storage container 1 to the metering container 3.
  • FIGS. 2 to 4 show various dene views of the dosing container with devices for
  • a cyclone 15 is accommodated in the container lid 14, with a holizontal feed 16 for the powder-air mixture coming from the storage container and an upper opening 17, which forms a connection to the atmosphere, for discharging the air components of the powder-air mixture.
  • the dosing container 3 also has a powder chamber 20 with a lower powder outlet 28, which is covered by a cover bell 29.
  • the bottom of the powder chamber 20 is formed by the fluidizing device 11, which comprises a fluidizing bottom 31 with fluidizing air inlet 32 on its underside. Below this fluidizing device there is a metering chamber 34 with a side metering air inlet 35, in the interior of which a fine-pored, gas-permeable metering cartridge 36 is accommodated.
  • the dosing chamber is followed by the conveying device 13, which has an injector 38 with injector air inlet 39 and outlet 40 for the dosed powder-air mixture to the associated powder coating device.
  • a powder level indicator 21 is provided, which in the exemplary embodiment is designed as a pneumatic height monitor with a pressure tube 22 and an orifice 23 in the cross section of this tube, at its lower free end.
  • the dosing container 3 is provided with brackets 25, 26 in order to be able to fasten it in the vicinity of the workplace, for example on a cabin wall.
  • the device described works as follows:
  • the powder-air mixture coming from the storage container 1 flows tangentially into the cyclone 15. This creates a primary vortex on the inner cyclone wall, through which the heavy powder particles are separated downwards under the influence of centrifugal acceleration, while the light air particles are carried upwards in a narrow, rising secondary vortex and excreted through the opening 17.
  • the powder is subsequently collected in the powder chamber 20 and fluidized by the fluidizing air flowing through the fluidizing tray 31.
  • the powder-air mixture produced is drawn off by the suction effect of the injector 38 through the powder outlet 28.
  • the powder-air mixture flows through the metering chamber 34 along the metering cartridge 36, through whose fine-pored, gas-permeable wall further air can be added to the powder-air mixture via the metering air inlet 35; that is, the powder-air mixture can be further "diluted".
  • the conveying air entering through the injector air inlet 39 determines the conveyed quantity of the powder-air mixture to the associated powder coating device, and the powder-air flow is conveyed in a known manner to the nearby neighboring coating device.
  • the powder level in the powder chamber 20 is indicated by the powder level indicator 21.
  • the fill level is detected by the orifice 23 in the end of the pressure tube 22 in accordance with the weight force of the powder acting on it.
  • the delivery of the powder-air mixture from the storage container 1 to the dosing container 3 can be regulated according to the calculated differences from the measured height and height limit values with predetermined values for the minimum and maximum filling height and on the basis of the measured powder filling level.
  • the sequence of first fluidizing powder remaining after the air has been discharged and then metering the powder-air mixture produced can be reversed by arranging the metering device 12 appropriately after the separating device 10 and before the fluidizing device 11. This arrangement results in a particularly exact dosage for certain applications.
  • the powder level indicator 21 in the powder chamber 20 can also take place capacitively, inductively, mechanically or optoelectrically through a transparent container cylinder.
  • the metered powder-air mixture can also be conveyed mechanically to the assigned powder coating device by means of a screw, cell wheel or the like.
  • the dosing container 3 is connected directly to the powder coating device without an intermediate feed line 4. This is particularly useful for permanently installed coating devices. In this case it is also possible to accommodate the high voltage generator of the electrostatic powder coating device in or on the dosing container 3.
  • all components of the dosing container can be connected to one another by plugging or screwing.

Landscapes

  • Coating Apparatus (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Cyclones (AREA)
  • Nozzles (AREA)
EP92106291A 1991-06-28 1992-04-10 Dispositif d'alimentation d'un appareil de revêtement avec un mélange air-poudre Expired - Lifetime EP0525303B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4121455A DE4121455C2 (de) 1991-06-28 1991-06-28 Einrichtung zum Speisen von Pulverbeschichtungsgeräten mit einem Pulver-Luft-Gemisch
DE4121455 1991-06-28

Publications (3)

Publication Number Publication Date
EP0525303A1 true EP0525303A1 (fr) 1993-02-03
EP0525303B1 EP0525303B1 (fr) 1995-06-28
EP0525303B2 EP0525303B2 (fr) 2001-08-08

Family

ID=6435002

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92106291A Expired - Lifetime EP0525303B2 (fr) 1991-06-28 1992-04-10 Dispositif d'alimentation d'un appareil de revêtement avec un mélange air-poudre

Country Status (4)

Country Link
US (1) US5294217A (fr)
EP (1) EP0525303B2 (fr)
JP (1) JPH0817997B2 (fr)
DE (2) DE4121455C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613967A1 (de) * 1996-04-09 1997-10-16 Gema Volstatic Ag Vorrichtung zur Sprühbeschichtung
NO345733B1 (en) * 2020-03-04 2021-07-05 Thorium Holding As Pneumatic level measurement system and method for measurement of powder material in a container.

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531421A1 (de) * 1995-08-26 1997-02-27 Gema Volstatic Ag Injektor-Vorrichtung zur Pulver-Sprühbeschichtung
DE19611533B4 (de) * 1996-03-23 2005-11-03 Itw Gema Ag Vorrichtung zur Pulverbeschichtung
DE19753660C2 (de) * 1997-12-03 2001-01-25 Wagner Internat Ag Altstaetten Verfahren und Einrichtung zum Aufbringen eines Trennmittels auf eine Spritzgußform
DE19913448A1 (de) 1999-03-25 2000-09-28 Itw Gema Ag Pulverbehälter-Niveausondenvorrichtung
DE10115467A1 (de) * 2001-03-29 2002-10-02 Duerr Systems Gmbh Werkzeugwechselsystem für eine Maschine
DE10115470A1 (de) * 2001-03-29 2002-10-10 Duerr Systems Gmbh Beschichtungsanlage mit einer Zerstäuberwechselstation
DE10115472A1 (de) * 2001-03-29 2002-10-10 Duerr Systems Gmbh Ventileinheit für eine elektrostatische Beschichtungsanlage
DE10115463A1 (de) * 2001-03-29 2002-10-02 Duerr Systems Gmbh Zerstäuber für eine Beschichtungsanlage und Verfahren zu seiner Materialversorgung
DE10139088A1 (de) * 2001-08-16 2003-02-27 Duerr Systems Gmbh Manipulatormaschine mit einer zu dem Arbeitsgerät geführten Leitungsanordnung
DE10202711A1 (de) * 2002-01-24 2003-07-31 Duerr Systems Gmbh Zerstäuber für die elektrostatische Serienbeschichtung von Werkstücken
DE10301942A1 (de) * 2003-01-20 2004-07-29 Dürr Systems GmbH Hydraulisch dynamischer Monomolch
DE10231421A1 (de) 2002-07-11 2004-01-22 Dürr Systems GmbH Verfahren und System zur Versorgung eines Pulverbeschichtungsgerätes
DE10233199A1 (de) * 2002-07-22 2004-02-05 Dürr Systems GmbH Turbinenmotor eines Rotationszerstäubers
DE10233197A1 (de) * 2002-07-22 2004-02-05 Dürr Systems GmbH Potentialausgleichsanordnung für einen elektrostatischen Rotationszerstäuber
DE10233198A1 (de) * 2002-07-22 2004-02-05 Dürr Systems GmbH Rotationszerstäuber
DE10239516A1 (de) * 2002-08-28 2004-03-18 Dürr Systems GmbH Schlauch für die elektrostatische Beschichtung von Werkstücken
DE10239517A1 (de) * 2002-08-28 2004-03-11 Dürr Systems GmbH Beschichtungseinrichtung mit einem Rotationszerstäuber und Verfahren zum Steuern ihres Betriebes
DE10240072B4 (de) * 2002-08-30 2005-11-24 Dürr Systems GmbH Molch zur Förderung eines Beschichtungsmaterials und Verfahren zu seiner Herstellung
DE10240451A1 (de) * 2002-09-02 2004-03-11 Dürr Systems GmbH Sensoranordnung für eine Beschichtungsanlage
DE10245594A1 (de) * 2002-09-30 2004-04-08 Dürr Systems GmbH Verfahren zur Kollisionserkennung
US20050002742A1 (en) * 2002-12-11 2005-01-06 Martin Bachmann Method and device for transporting powdery substances
US6991178B2 (en) 2003-01-24 2006-01-31 Dürr Systems, Inc. Concentric paint atomizer shaping air rings
ITFI20050011A1 (it) * 2005-01-21 2006-07-22 Perini Fabio Spa Metodo ed impianto per la produzione di un manufatto in carta tissue o simile comprendente un materiale superassorbente
US8671495B2 (en) * 2006-11-06 2014-03-18 Durr Systems, Inc. Scraper pig
US8764350B2 (en) 2008-06-05 2014-07-01 Alstom Technology Ltd Conveyor for transporting powder, and a method for conveying powder
US7916989B2 (en) 2008-07-31 2011-03-29 Corning Cable Systems Llc Optical fiber assemblies having a powder or powder blend at least partially mechanically attached
WO2010019273A1 (fr) * 2008-08-15 2010-02-18 Corning Cable Systems Llc Ensembles de fibres optiques et procédés et appareil de fabrication associés

Citations (3)

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Publication number Priority date Publication date Assignee Title
FR2556817A1 (fr) * 1983-12-17 1985-06-21 Perlite Gmbh Installation mobile permettant l'elimination et l'introduction de perlite expansee ou de materiaux calorifuges semblables, notamment dans des dispositifs de calorifugeage
DE3729705A1 (de) * 1987-09-04 1989-03-23 Gema Ransburg Ag Pulverbeschichtungsanlage, insbesondere fuer emailpulver
FR2627709A1 (fr) * 1988-02-26 1989-09-01 Castolin Sa Installation pour pulverisation thermique de materiaux pulverulents

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DE1258789C2 (de) * 1966-04-16 1974-01-17 Peters Ag Claudius Vorrichtung zum Ausschleusen von fluidisierbarem, stark schleissendem Gut aus einer Unterdruckfoerderanlage
DE2102667A1 (de) * 1971-01-21 1972-08-03 Epv Entwicklungs Planung U Ver Pulver-Rückgewinnungseinrichtung bei Anlagen für elektrostatische Pulverbeschichtung
US4085975A (en) * 1976-07-29 1978-04-25 Dundee Cement Company Aerating barge unloading system
US4502819A (en) * 1981-06-12 1985-03-05 Denka Engineering Kabushiki Kaisha Constant discharge device in a conveyor for powdery and granular materials
DE3231594A1 (de) * 1982-08-25 1984-03-01 Anatolij Ivanovič Egoruškin Vorrichtung zum verstaeuben eines pulverfoermigen stoffes
US4846608A (en) * 1983-03-01 1989-07-11 Sanders Kenneth L Pneumatic grain conveyor and related method
US4824295A (en) * 1984-12-13 1989-04-25 Nordson Corporation Powder delivery system
CA1251245A (fr) * 1985-05-08 1989-03-14 Jaroslav Kopernicky Chargeur de materiau granule
US4586854A (en) * 1985-06-12 1986-05-06 Nordson Corporation Venturi powder pump having rotating diffuser
DE3729728A1 (de) * 1987-09-04 1989-03-23 Gema Ransburg Ag Pulveraufbereitungsanlage, fuer beschichtungspulver
DE3824908A1 (de) * 1988-07-22 1990-02-01 Gema Ransburg Ag Verfahren und vorrichtung zum elektrostatischen spruehbeschichten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2556817A1 (fr) * 1983-12-17 1985-06-21 Perlite Gmbh Installation mobile permettant l'elimination et l'introduction de perlite expansee ou de materiaux calorifuges semblables, notamment dans des dispositifs de calorifugeage
DE3729705A1 (de) * 1987-09-04 1989-03-23 Gema Ransburg Ag Pulverbeschichtungsanlage, insbesondere fuer emailpulver
FR2627709A1 (fr) * 1988-02-26 1989-09-01 Castolin Sa Installation pour pulverisation thermique de materiaux pulverulents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613967A1 (de) * 1996-04-09 1997-10-16 Gema Volstatic Ag Vorrichtung zur Sprühbeschichtung
NO345733B1 (en) * 2020-03-04 2021-07-05 Thorium Holding As Pneumatic level measurement system and method for measurement of powder material in a container.

Also Published As

Publication number Publication date
DE4121455A1 (de) 1993-01-14
EP0525303B2 (fr) 2001-08-08
JPH05192630A (ja) 1993-08-03
EP0525303B1 (fr) 1995-06-28
DE59202680D1 (de) 1995-08-03
US5294217A (en) 1994-03-15
JPH0817997B2 (ja) 1996-02-28
DE4121455C2 (de) 1994-10-27

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