EP0525303B2 - Einrichtung zum Speisen von Pulverbeschichtungsgeräten mit einem Pulver-Luft-Gemisch - Google Patents
Einrichtung zum Speisen von Pulverbeschichtungsgeräten mit einem Pulver-Luft-Gemisch Download PDFInfo
- Publication number
- EP0525303B2 EP0525303B2 EP92106291A EP92106291A EP0525303B2 EP 0525303 B2 EP0525303 B2 EP 0525303B2 EP 92106291 A EP92106291 A EP 92106291A EP 92106291 A EP92106291 A EP 92106291A EP 0525303 B2 EP0525303 B2 EP 0525303B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- air
- dosing
- container
- air mixture
- 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
Links
- 239000000843 powder Substances 0.000 title claims description 56
- 239000011248 coating agent Substances 0.000 title claims description 37
- 238000000576 coating method Methods 0.000 title claims description 37
- 239000000203 mixture Substances 0.000 title claims description 35
- 230000001143 conditioned effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
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 Feed a powder-air mixture into one Powder coating device according to the generic term of claim 1.
- the applicators i.e. the powder spray guns
- the powder in the form of a powder-air mixture are fed, where possible even distribution and an accurate and constant Dosage of the powder particles in the powder-air flow for a uniform coating of special Meaning.
- the coating powder is usually used for this processed in special storage containers.
- These storage containers have a fluidizing and Conveyor on.
- Such a storage container is known from DE-PS 36 11 039.
- At that one described type of fluidizing and conveying device it is difficult to get accurate promotion and dosage.
- This disadvantage will through generally long delivery lines from im general very large powder storage container for removed powder coating device reinforced.
- the object of the present invention is therefore a device for feeding to a powder coating device to create with their help it succeeds in conveying uniformity and dosing accuracy significantly improve and from one single storage container from multiple powder coating devices in terms of throughput and Air share of the powder-air mixture from each other to supply independently.
- An advantage of the solutions according to the invention can be seen in the fact that by excreting the air from the incoming powder-air mixture, fluidize and dosing the remaining powder in a single powder coating device assigned dosing container composition and volume of the powder-air flow of each desired coating quality can be adjusted can, despite that for multiple powder coating devices just a single reservoir is provided. It is for the dosing accuracy essential that from the arriving from the reservoir Powder-air mixture first Fluidizing air is excreted, and that the remaining Powder then fluidized again and dosed.
- Another advantage of the invention results from the relatively short funding path of Dosing container - the spatial one with a small design Close to the coating device can be - to the assigned powder coating device, making the delivery uniformity essential less than with conventional long ones Delivery lines is affected. Not least enables the use of a dosing container the operation of a powder coating device assigned to it even with non-promotional ones Storage containers, at least for a certain one, from Volume of the dosing container dependent period of time.
- Fig. 1 shows a schematic representation of the Device with a storage container 1, delivery lines 2 and 4, a dosing container 3 and one Powder coating device 5.
- a dosing container 3 and a powder coating device 4 shown, it can however, of course, several such metering container / coating device pairs the reservoir 1 connected.
- the delivery line 4 from dosing container to powder coating device usually briefly opposite the delivery line 2 from storage container 1 to dosing container 3rd
- the container lid 14 housed a cyclone 15, with a horizontal Feeder 16 for the from the reservoir upcoming powder-air mixture and an upper, a connection to the atmosphere forming opening 17 for removing the air components of the Powder-air mixture.
- the dosing container 3 has further a powder chamber 20 with a lower one Powder outlet 28, which from a cover bell 29 is covered.
- the bottom of the powder chamber 20 is formed by the fluidizing device 11, the one fluidizing plate 31 with fluidizing air inlet 32 includes at the bottom.
- a metering chamber 34 provided with side metering air inlet 35, inside, a fine-pored, gas-permeable Dosing cartridge 36 is housed.
- the dosing chamber subsequently the conveyor 13 is arranged, the one injector 38 with injector air inlet 39 and outlet 40 for the metered powder-air mixture to the assigned powder coating device having.
- Powder level indicator 21 is provided, which in Exemplary embodiment as pneumatic height monitoring with a pressure tube 22 and an aperture 23 in cross section of this tube, at its lower free end is executed.
- the Dosing container 3 provided with brackets 25, 26, to get him close to the work place, for example can be attached to a cabin wall.
- the described device works as follows: The one coming from the storage container 1 Powder-air mixture flows tangentially into the cyclone 15 a. This creates on the inner cyclone wall a primary vortex through which, under the influence of Centrifugal acceleration of the heavy powder particles be deposited down while the light air particles in a narrow, ascending Secondary vertebrae carried up and be excreted through the opening 17.
- the Powder is subsequently in the powder chamber 20 collected and through which the fluidizing tray 31 flowing fluidizing air fluidized.
- the generated Powder-air mixture is caused by the suction of injector 38 through powder outlet 28 subtracted down.
- the powder-air mixture flows through the metering chamber 34 along the metering cartridge 36, through its fine-pored, gas-permeable Overcome the powder-air mixture 35 additional air are added to the metering air inlet can be; that is, the powder-air mixture can be further "diluted".
- the through the Injector air inlet 39 determines entering conveying air the flow rate of the powder-air mixture to the assigned Powder coating device, and the powder-air flow becomes the neighboring one in a known manner Coating machine promoted.
- the powder level is raised in the powder chamber 20 from the powder level indicator 21 specified. It is in In the case of pneumatic level monitoring from the aperture 23 in the end of the pressure tube 22 Level according to the one acting on it Weight force of the powder detected. With given Minimum and maximum fill level values and based on the measured powder level can promote the powder-air mixture from storage container 1 to dosing container 3 accordingly the calculated differences from measured Height and height limits regulated become.
- the order after the departure of the Air fluidizing powder first and then meter the powder-air mixture can by an appropriate arrangement the metering device 12 after the separating device 10 and in front of the fluidizing device 11 be reversed. This arrangement results for certain A particularly precise application Dosage.
- the powder level indicator 21 in the powder chamber 20 also capacitive, inductive, mechanical or optoelectrically through a transparent Container cylinders take place. Furthermore can the dosed powder-air mixture instead of with one Injector also mechanically by means of screw, cellular wheel or the like for the associated powder coating device be promoted.
- the dosing container 3 immediately without one intermediate conveyor line 4 with the powder coating device connected. This offers itself especially with permanently installed coating devices on. In this case it is also possible to use the High voltage generator of the electrostatic powder coating device in or on the dosing container 3 to accommodate.
Landscapes
- Coating Apparatus (AREA)
- Electrostatic Spraying Apparatus (AREA)
- Cyclones (AREA)
- Nozzles (AREA)
Description
- Fig. 1
- eine schematische Darstellung einer Einrichtung zum Speisen eines Pulver-Luft-Gemisches, zu einem Pulverbeschichtungsgerät,
- Fig. 2
- einen Vertikalschnitt durch den Dosierbehälter von Fig. 1,
- Fig. 3
- einen Vertikalschnitt durch den um 90° gedrehten Dosierbehälter von Fig. 2 und
- Fig. 4
- einen Horizontalschnitt durch den Dosierbehälter von Fig. 2.
Fluidisieren des verbleibenden Pulvers 11, Dosieren des neu erzeugten Pulver-Luft-Gemisches 12 und Weiterfördern des dosierten Pulver-Luft-Gemisches 13.
Claims (7)
- Einrichtung zum Speisen eines Pulver-Luft-Gemisches zu einem Pulverbeschichtungsgerät (5), bei der das Pulver in einem Pulvervorratsbehälter (1) fluidisiert und das dabei entstehende Pulver-Luft-Gemisch über einen ebenfalls mit einer Fluidisiervorrichtung (11) ausgestatteten Zwischenbehälter (3) zum Pulverbeschichtungsgerät (5) gefördert wird, wobei der Zwischenbehälter einen zyklonartigen Luftausscheider (10), die Fluidisiervorrichtung (11) und eine Fördervorrichtung (13) zum Weiterfördern des Pulver-Luft-Gemischs zum Pulverbeschichtungsgerät aufweist, dadurch gekennzeichnet, daß
der Zwischenbehälter (3) einem einzelnen Pulverbeschichtungsgerät zugeordnet und als ein unmittelbar mit dem Pulverbeschichtungsgerät (5) verbundener Dosierbehälter ausgebildet ist, der eine Dosiervorrichtung (12) zum Erzeugen eines dosierten Pulver-Luft-Gemisches enthält. - Einrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Luftausscheider (10) ein im Behälterdeckel (14) ausgebildeter Zyklon (15) ist, mit einer Pulverzuführung (16) für das vom Vorratsbehälter (1) kommende Pulver-Luft-Gemisch und einer Öffnung (17) zur Atmosphäre für ausgeschiedene Luft.
- Einrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Fluidisiervorrichtung (11) im Bodenbereich des Dosierbehälters (3) untergebracht ist und einen Fluidisierboden (31) mit Fluidisierlufteingang (32) von unten her aufweist.
- Einrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Dosiervorrichtung (12) dem Fluidisierboden (31) nachgeschaltet ist und eine Pulverdosierkammer (34) aufweist, in der eine Dosierpatrone (36) mit Dosierlufteingang (35) und feinverteiltem Dosierluftauslaß zum Anreichern des Pulver-Luft-Gemisches mit zusätzlicher Luft angeordnet ist.
- Einrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Fördervorrichtung (13) der Dosierkammer (34) und dem Fluidisierboden (31) nachgeschaltet ist und aus einem Injektor (38) mit Injektorlufteingang (39) und Pulveraustritt (40) besteht, und über diesen Austritt (40) das dosierte Pulver-Luft-Gemisch zum zugeordneten Pulverbeschichtungsgerät (5) weitergefördert wird.
- Einrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch ein den Pulverfüllstand anzeigendes Gerät (22) in einer Pulverkammer (20) zwischen Deckel und Boden des Dosierbehälters (3).
- Einrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das Gerät für die Pulverfüllstandsanzeige (22) eine Min/Max-Regeleinrichtung für die Förderung des vom Vorratsbehälter (1) kommenden Pulvers aufweist.
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 EP0525303A1 (de) | 1993-02-03 |
| EP0525303B1 EP0525303B1 (de) | 1995-06-28 |
| EP0525303B2 true EP0525303B2 (de) | 2001-08-08 |
Family
ID=6435002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92106291A Expired - Lifetime EP0525303B2 (de) | 1991-06-28 | 1992-04-10 | Einrichtung zum Speisen von Pulverbeschichtungsgeräten mit einem Pulver-Luft-Gemisch |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5294217A (de) |
| EP (1) | EP0525303B2 (de) |
| JP (1) | JPH0817997B2 (de) |
| DE (2) | DE4121455C2 (de) |
Families Citing this family (29)
| 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 |
| DE19613967A1 (de) * | 1996-04-09 | 1997-10-16 | Gema Volstatic Ag | Vorrichtung zur Sprühbeschichtung |
| 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 |
| DE10115472A1 (de) * | 2001-03-29 | 2002-10-10 | Duerr Systems Gmbh | Ventileinheit für eine elektrostatische Beschichtungsanlage |
| DE10115470A1 (de) * | 2001-03-29 | 2002-10-10 | Duerr Systems Gmbh | Beschichtungsanlage mit einer Zerstäuberwechselstation |
| 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 |
| 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 |
| DE10233199A1 (de) * | 2002-07-22 | 2004-02-05 | Dürr Systems GmbH | Turbinenmotor eines Rotationszerstäubers |
| 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 |
| EP2318872B1 (de) | 2008-08-15 | 2013-03-20 | Corning Cable Systems LLC | Faseroptische baugruppen und verfahren und vorrichtungen zu ihrer herstellung |
| 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. |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| DE3345820C2 (de) * | 1983-12-17 | 1985-10-24 | Deutsche Perlite Gmbh, 4600 Dortmund | Mobile Anlage zum Entfernen und Einfüllen von geblähtem Perlit oder ähnlichen Wärmedämmstoffen |
| US4824295A (en) * | 1984-12-13 | 1989-04-25 | Nordson Corporation | Powder delivery system |
| CA1251245A (en) * | 1985-05-08 | 1989-03-14 | Jaroslav Kopernicky | Particulate material loader |
| 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 |
| DE3729705A1 (de) * | 1987-09-04 | 1989-03-23 | Gema Ransburg Ag | Pulverbeschichtungsanlage, insbesondere fuer emailpulver |
| CH674951A5 (de) * | 1988-02-26 | 1990-08-15 | Castolin Sa | |
| DE3824908A1 (de) * | 1988-07-22 | 1990-02-01 | Gema Ransburg Ag | Verfahren und vorrichtung zum elektrostatischen spruehbeschichten |
-
1991
- 1991-06-28 DE DE4121455A patent/DE4121455C2/de not_active Expired - Fee Related
-
1992
- 1992-04-10 EP EP92106291A patent/EP0525303B2/de not_active Expired - Lifetime
- 1992-04-10 DE DE59202680T patent/DE59202680D1/de not_active Expired - Fee Related
- 1992-06-11 US US07/897,086 patent/US5294217A/en not_active Expired - Fee Related
- 1992-06-26 JP JP4169125A patent/JPH0817997B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4121455C2 (de) | 1994-10-27 |
| JPH05192630A (ja) | 1993-08-03 |
| US5294217A (en) | 1994-03-15 |
| DE59202680D1 (de) | 1995-08-03 |
| JPH0817997B2 (ja) | 1996-02-28 |
| EP0525303B1 (de) | 1995-06-28 |
| EP0525303A1 (de) | 1993-02-03 |
| DE4121455A1 (de) | 1993-01-14 |
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