DE2419282A1 - Electrostatic powder sprayer - with return of excess powder from base of spray chamber direct to spray gun - Google Patents
Electrostatic powder sprayer - with return of excess powder from base of spray chamber direct to spray gunInfo
- Publication number
- DE2419282A1 DE2419282A1 DE2419282A DE2419282A DE2419282A1 DE 2419282 A1 DE2419282 A1 DE 2419282A1 DE 2419282 A DE2419282 A DE 2419282A DE 2419282 A DE2419282 A DE 2419282A DE 2419282 A1 DE2419282 A1 DE 2419282A1
- Authority
- DE
- Germany
- Prior art keywords
- powder
- spray gun
- excess
- spray
- gun
- 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.)
- Pending
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
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/16—Arrangements for supplying liquids or other fluent material
- B05B5/1683—Arrangements for supplying liquids or other fluent material specially adapted for particulate materials
-
- 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
- B05B14/48—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for particulate material
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Stand der Dechnlk: D5.e bisher bekannten Verfahren der. Pulver-Beschichtung sind so aufgebaut, daß in einer Kabine das zu beschichtende und geerdete Werkstück mit statisch aufgeladenem Pulver besprüht wird. Die statische Aufladung des Pulvers über Hochspannung oder Reibung bewirkt den Hafteffekt.State of the Dechnlk: D5.e previously known method of. Powder coating are constructed in such a way that the workpiece to be coated and grounded is in one booth is sprayed with statically charged powder. The static charge on the powder The adhesive effect is caused by high voltage or friction.
Das zuviel an das Werkstück gesprühte Pulvev,das nach Erreichen der Schichtdicke nicht mehr haftet oder auch vorbeigesprüht wird, fällt auf den Boden der Kabine zurück und wird über Ventilatoren in die Pulver-Rückgewinnungsanlage zurückgesaugt und meist über Guchfilter oder Zyklon-Anlagen abgeschieden.The too much powder sprayed on the workpiece after reaching the Layer thickness no longer adheres or is sprayed past falls on the floor the booth and is ventilated into the powder recovery system sucked back and mostly separated by means of Guch filters or cyclone systems.
Diese Art der Pulver-Rückgewinnung erfordert Anlagen großer Leistung und entsprechend großen Platzbedarfs, ist kostspielig und daher nicht wirtschaftlich. Durch die hierfür.This type of powder recovery requires high capacity equipment and correspondingly large space requirements, is expensive and therefore not economical. By doing this.
erforderlichen hohen Absaug-huftgeschwindigkeiten entstehen in Kabine und Absaugrohren unkontrollierbare Turbulenzen, die ein kontinuierliches. Austragen des Pulvers nicht gewährleisten.The required high suction hip speeds are created in the cabin and suction pipes uncontrollable turbulence, which is a continuous. Deliver of the powder do not guarantee.
Beschreibung der Erfindung (Inaektor-Rückgewinnungs-Verfahren) Bei dem nachstehend erklärten neu entwickelten Verfahren wurde davon ausgegangen, das Pulver ohne Verlust in einem Kreislauf zu halten; d. h. unter Ausschaltung von zusätzlichen Rückgewinunungsanlagennur über die Kabine abzusaugen und dieses Pulver-Buftgemisch der Pistole direkt zuzuführen.Description of the invention (Inaektor recovery method) At the newly developed procedure explained below was based on the assumption that the Keep powder in a loop with no loss; d. H. with the elimination of additional Recovery systems can only be extracted via the cabin and this powder-air mixture to be fed directly to the gun.
Es ergeben sich dadurch folgende Vorteile: a) Kein Pulver-Verlust, da der geschlossene Kreislauf die volle Nutzung des vorhandenen Pulvers ermöglicht.This results in the following advantages: a) No powder loss, because the closed circuit enables the full use of the available powder.
b) Kurze Umrüstzeiten bei Pulverwechsel.b) Short changeover times when changing powder.
c) Leichte Reinigung der Anlage tAbblasen der Kabinenwände und der Auffangtrichter und anschließendes Durchblasen der Pulverleitungen genügt).c) Easy cleaning of the system Collecting funnel and then blowing through the powder lines is sufficient).
d) Durch strömungstechnisch günstige Auslegung der Ansauggeschwindigkeit wird Turbulenz in der Kabine ausgeschaltet und eine gleichmäßige Beschichtung der Werkstücke möglich gemacht.d) By designing the suction speed to be favorable in terms of flow turbulence in the cabin is eliminated and an even coating of the Workpieces made possible.
Beschreibung des Injektor-Rückgewinnungs-Verfahrens: Skizze A: Durckluft wird über den Verteiler (4), Magnetventil (2) zum Injektor (3) geführt. Dieser Injektor saugt das überschüssige Pulver ab und gibt das Pulver-Luftgemisch über Leitung (4) an den einstell- und abstellbaren Injektor (5) weiter, der die Pulvermenge ergänzt und über Leitung (6) zur Pistole (7) führt.Description of the injector recovery process: Sketch A: compressed air is fed to the injector (3) via the distributor (4), solenoid valve (2). This injector sucks off the excess powder and releases the powder-air mixture via line (4) to the adjustable and deactivatable injector (5), which supplements the amount of powder and leads to the gun (7) via line (6).
Die Pistole wird über Hebel (8) bedient. Leitung (9) versorgt den huftschalter (11) im Steuerpult (10); er wird über Hebel (8) und Leitung (12>betätigte Die Hochspannung, vom Hochspannungserzeuger (13) kommend, wird - ausgelöst durch Suftschalter (44) - über Leitung (16), Schütz (14) und Kabel (15) der Pistole (7) zugeschaltet.The gun is operated via lever (8). Line (9) supplies the hip switch (11) in the control panel (10); it is actuated via lever (8) and line (12>) The high voltage coming from the high voltage generator (13) is triggered by Air switch (44) - via line (16), contactor (14) and cable (15) of the gun (7) switched on.
Leitung (16) löst gleichzeitig Magnetventil (2) aus und gibt damit Luft frei zur Pulverförderung.Line (16) triggers solenoid valve (2) at the same time and releases it Air free for powder delivery.
Das Werkstück (17) wird durch das statisch aufgeladene Pulver angesprüht. Das überschüssige Pulver fällt in den Trichter (18) der Kabine zurück.The workpiece (17) is sprayed on by the statically charged powder. The excess powder falls back into the funnel (18) of the booth.
Grobe Verunreinigungen werden im Siebeinsatz (19) zurückgehalten. Pulver-Ablagerungen an den Trichterwänden werden durch angebaute Vibratoren (20) verhindert.Coarse impurities are retained in the sieve insert (19). Powder deposits on the hopper walls are removed by attached vibrators (20) prevented.
Das Pulver wird nunmehr erneut über Injektor (7) abgesaugt und über VersortungsleLtung (4) beim einstellbaren Injektor (5) über den Pulver-Vorratsbehälter (21) ergänzt und schließt damit den Kreislauf.The powder is now sucked off again through the injector (7) and over Supply line (4) with the adjustable injector (5) via the powder storage container (21) complements and closes the cycle.
Druckluftleitung (23) versorgt den Suftboden (22) des Pulverbehälters (21),der das Pulver stets rieselfähig hält.Compressed air line (23) supplies the air base (22) of the powder container (21), which always keeps the powder free-flowing.
Skizzen B und C: zeigen Serienschaltungen des Injektor-Rückgewinnungs-Verfahrens.Sketches B and C: show series connections of the injector recovery process.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2419282A DE2419282A1 (en) | 1974-04-22 | 1974-04-22 | Electrostatic powder sprayer - with return of excess powder from base of spray chamber direct to spray gun |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2419282A DE2419282A1 (en) | 1974-04-22 | 1974-04-22 | Electrostatic powder sprayer - with return of excess powder from base of spray chamber direct to spray gun |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2419282A1 true DE2419282A1 (en) | 1975-11-06 |
Family
ID=5913550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2419282A Pending DE2419282A1 (en) | 1974-04-22 | 1974-04-22 | Electrostatic powder sprayer - with return of excess powder from base of spray chamber direct to spray gun |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2419282A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2534451A2 (en) * | 1981-01-06 | 1984-04-20 | Tecnoma | Installation for spraying a treatment liquid, in particular for treating crops or soil. |
DE3635698A1 (en) * | 1985-10-22 | 1987-05-27 | Castolin Sa | Flame-spraying burner for producing surface layers on workpieces |
DE9114142U1 (en) * | 1991-11-13 | 1993-03-11 | PCT Powder Coating Technologies GmbH, 7482 Krauchenwies | Device for feeding colour powder during powder coating |
DE102020125057B3 (en) | 2020-09-25 | 2021-10-14 | Dca Deckert Anlagenbau Gmbh | Powdering system and powdering process with it |
CN113828444A (en) * | 2021-09-21 | 2021-12-24 | 东莞市兴帆机械有限公司 | Plastic spraying process for television backboard |
-
1974
- 1974-04-22 DE DE2419282A patent/DE2419282A1/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2534451A2 (en) * | 1981-01-06 | 1984-04-20 | Tecnoma | Installation for spraying a treatment liquid, in particular for treating crops or soil. |
DE3635698A1 (en) * | 1985-10-22 | 1987-05-27 | Castolin Sa | Flame-spraying burner for producing surface layers on workpieces |
DE9114142U1 (en) * | 1991-11-13 | 1993-03-11 | PCT Powder Coating Technologies GmbH, 7482 Krauchenwies | Device for feeding colour powder during powder coating |
DE102020125057B3 (en) | 2020-09-25 | 2021-10-14 | Dca Deckert Anlagenbau Gmbh | Powdering system and powdering process with it |
CN113828444A (en) * | 2021-09-21 | 2021-12-24 | 东莞市兴帆机械有限公司 | Plastic spraying process for television backboard |
CN113828444B (en) * | 2021-09-21 | 2023-07-18 | 东莞市兴帆机械有限公司 | Plastic spraying process for television backboard |
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