EP1469948B1 - Dispositif permettant d'eliminer et d'aspirer des poudres de la surface exterieure d'un ou de plusieurs tubes d'aspiration de poudre - Google Patents

Dispositif permettant d'eliminer et d'aspirer des poudres de la surface exterieure d'un ou de plusieurs tubes d'aspiration de poudre Download PDF

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Publication number
EP1469948B1
EP1469948B1 EP02767762A EP02767762A EP1469948B1 EP 1469948 B1 EP1469948 B1 EP 1469948B1 EP 02767762 A EP02767762 A EP 02767762A EP 02767762 A EP02767762 A EP 02767762A EP 1469948 B1 EP1469948 B1 EP 1469948B1
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EP
European Patent Office
Prior art keywords
powders
powder
pipes
suction
containers
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Expired - Lifetime
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EP02767762A
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German (de)
English (en)
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EP1469948A2 (fr
Inventor
Luigi Carlo Maria Volonte'
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Individual
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • 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
    • B05B7/1472—Powder extracted from a powder container in a direction substantially opposite to gravity by a suction device dipped into the powder
    • 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
    • B05B14/10—Arrangements for collecting, re-using or eliminating excess spraying material the excess material being particulate

Definitions

  • the present invention relates to a device for the removal and suction of powders from the outer surface of pipes provided to draw these powders, in an apparatus for powder painting/enamelling.
  • These apparatuses for powder painting/enamelling usually comprises a spray booth, positioned inside which are suitable means to deliver the powders that coat the surface of the piece being coated, and a powder feed system including, one or more replaceable powder containers and a pneumatic circuit to feed the powders from the containers to the nozzles of the delivery means.
  • the coloured powders may therefore be fluidified and subsequently conveyed by suction from the replaceable containers to the delivery means.
  • Apparatuses of this type are also normally equipped with one or more suction filtering systems which have the objective of disposing of the unused powders present in the booth during coating.
  • one or more powder drawing pipes, of the aforesaid pneumatic circuit are placed inside each replaceable container; the powders, possibly fluidified by a gas flow, are sucked up through these pipes to reach the delivery means.
  • each powder drawing pipe is extracted from the corresponding container and the powders deposited inside and outside the pipe are removed before subsequent use of the apparatus.
  • an automatic device lifts the pipes from the containers so that, once extracted from the latter, the empty containers can be removed and the powder drawing pipes can be cleaned first removing the powders by means of a jet of pressurized air or other fluid and simultaneously sucking up the previously removed powders.
  • US-A-5928423 discloses a colour changing powder supply system for use in powder coating, which comprises a powder tank, a powder supply system detachably connected to the power tank, and means for cleaning the power supply apparatus.
  • a compressed air gun is generally used to clean the outside of the pipes; this is operated manually by an operator who, by aiming the jet along the outer surface of the pipes, is able to remove the powder deposited on these surfaces.
  • the removed powder which tends to fall through gravity, is sucked up by a suitable filter system incorporated in the powder feed system.
  • This operation to clean the outside of the powder drawing pipes may also be somewhat ineffective as it is correlated to the ability and precision of the operator.
  • the filter of the powder feed system which to be efficient is usually of considerable size, requires the use of high powers to suck up the powders and frequent maintenance.
  • the principal object of the present invention is to supply a device for the removal and suction of powders deposited on the outer surface of powder drawing pipes in a powder painting/enamelling apparatus which is efficacious and precise and which may be automated so that it is not excessively time consuming and does not require resources during utilization.
  • Another object of the present invention is to produce a device for the removal and suction of powders which is structurally simple and does not require additional suction devices to the suction device of the spray booth.
  • Yet another object of the present invention is to provide a device, an apparatus comprising this device and a method for the removal and suction of powders which allow rapid replacement of empty powder containers when the pigment or coating substance require to be changed.
  • the device for the removal and suction of powders from the outside of one or more powder drawing pipes in an apparatus for powder painting/enamelling in which said powder drawing pipes fluidically connect suitable means to deliver powders to one or more replaceable powder containers and in which the pipes may be inserted into and extracted from the powder containers, comprises one or more scraper elements to remove the powders deposited on the side surfaces.
  • Each of these scrapers is associated with the outer side surface of a single pipe so that each pipe and the scraper element associated with it are mobile relatively one to the other.
  • the apparatus also comprises means for suction of the powders removed from each scraper element.
  • scraper elements acting on the outer side surface of the powder drawing pipes thanks to relative sliding of the associated scraper - pipe, allows both highly efficient removal of the powders and the chance to automate the relative sliding of the scraper - pipe and hence the entire operation of removal and suction of the powders.
  • the suction means of the device also comprise one or more inlet mouths for the fluid sucked up, each of which is associated with a single powder drawing pipe.
  • the suction power required is reduced and it is possible to connect the inlet mouths of the fluid sucked up directly, or by means of ducts, to the suction system and to the filter of the spray booth.
  • the device comprises a box-like support with a tubular shape equipped with through holes inside which the powder drawing pipes are inserted slidingly.
  • the box-like element is fluidically connected to a suction device, so that the aforesaid through holes form the suction mouths associated individually with the powder drawing pipes.
  • the scraper elements are preferably annular and engage, at least partially, with the inner side surface of the through holes made in the box-like support.
  • FIGS. 1 and 2 show a detail of a powder feed system part of an apparatus 1 for powder painting/enamelling of the type comprising two assemblies 3a, 3b of powder drawing pipes, or suction pipes, each of which is used to fluidically connect a powder container, drum or box, (not shown) to means 2 to deliver the powders for the surface coating of a piece being coated.
  • Each assembly 3a and 3b of powder drawing pipes is designed to be inserted into a powder container during coating and extracted from this container at the end of coating.
  • Figure 1 also shows, one for each pipe, distribution nozzles 4 with the function of sending a jet of pressurized fluid inside the pipes of the assemblies 3a, 3b, in order to remove the powder deposited inside these pipes during the operation to clean the apparatus 1.
  • Each assembly 3a, 3b, as shown in figure 1b, comprises a plurality of powder drawing pipes 5a, 5b, 5c, 5d, 5e, 5f, each of which is inserted slidingly inside respective through holes produced in a cleaning terminal 9 with which the device for removal and suction of powders according to the present invention may be equipped.
  • the terminal 9 supports a plurality of scrapers of the outer surface of these pipes 5a-5f and is connected to means for suction of the removed powders.
  • Figures 3 and 4 show a plurality of pipes 5'a, 5'b, 5'c of a system to feed powders in an apparatus for powder painting/enamelling inserted into a container 6 for powders 8.
  • a respective nozzle 7a, 7b and 7c for cleaning the inside of the pipes 5'a, 5'b, 5'c.
  • the pipes 5'a, 5'b, 5'c during the phases to coat a piece, are fed with a suction flow capable of drawing the powders 8 from the container 6 and directing them towards special nozzles in the aforesaid means to deliver powders (totally analogous to those indicated with 2 in figure 1 ).
  • These pipes 5'a, 5'b, 5'c may also be moved in the direction indicated by the arrow A in relation to the container 6 in order to allow the pipes 5'a, 5'b, 5'c to be inserted into and extracted from the container 6 when it is necessary to change the colour or coating material and it is hence necessary to replace these powder containers.
  • the powder drawing pipes 5'a, 5'b, 5'c are connected, according to a preferred aspect of the present invention and analogously to what is shown in figure 2 , to a terminal 9' of a device for the removal and suction of the powders deposited on the outside of the pipes 5'a, 5'b, 5'c.
  • the terminal 9' as shall be explained below, is preferably connected, by a duct 16, to a suction device not shown and may be moved, in the direction indicated by the arrow B, in relation to the pipes 5'a, 5'b, 5'c. Alternatively, the terminal 9' may remain fixed, while the pipes 5'a, 5'b, 5'c may move in relation to it in the direction indicated by the arrow B.
  • the suction device to which the terminal 9' is fluidically connected may be the same one as the spray booth.
  • the device of the present invention for the removal and suction of powders from the outer surface of powder drawing pipes comprises one or more scraper elements 12, each of which is associated, slidingly, with the outer side surface of a powder drawing pipe 5a, 5b, 5c, 5d or 5f. Relative movement of each scraper element 12 in relation to the associated powder drawing pipe, or vice versa, allows the removal of the powders that have deposited during coating on the outer surface of the powder drawing pipes 5a-5f.
  • the scraper elements 12 have an annular shape and are of a size to encircle, in contact, the associated powder drawing pipe 5a, 5b, 5c, 5d, 5e or 5f.
  • These elements 12 may be made of flexible material, such as rubber, to prevent abnormal wear from occurring on the outer surface of the pipes 5a-5f and to guarantee an efficacious action of abrasion, or scraping, of the powders.
  • the device of the present invention is also equipped with means for suction of the powders removed which may be connected to prior art suction systems present in the spray booth. Nonetheless, the device of the present invention may be adapted to powder feed systems equipped with their own suction system, which is additional in relation to the one of the spray booth.
  • the present invention provides only the scraper elements 12, fitted so that there is relative motion between the pipes 5a-5f and the scraper elements 12, for the removal of powders, while it exploits the pre-existing suction system for the suction of these powders.
  • the suction means comprise mouths 11, 14 slidingly coupled to the powder drawing pipes 5a-5f and fluidically connected to this suction device (not shown).
  • these inlet mouths of the sucked up fluid 11,14 are shaped to individually encircle the powder drawing pipes 5a-5f and engage with the outer surface of the latter so that each pipe 5a, 5b, 5c, 5d, 5e or 5f and each inlet mouth 11, 14 is mobile in relation to one another.
  • this relative movement which favours suction of the powders deposited on the outside of the powder drawing pipes 5a-5f, envisages that the powder drawing pipes are mobile, while the inlet mouths 11, 14 are fixed in relation to the surface on which the apparatus rests.
  • the device for the removal and suction of powders also comprises a box-like element 10 designed to confine the powders removed by the action of the scrapers 12.
  • This box-like element 10 tubular in shape, is associated with the powder drawing pipes 5a-5f so that relative motion is possible between the element 10 and the powder drawing pipes.
  • the box-like element 10 has through holes 11, 14 inside which the powder drawing pipes 5a-5f are inserted slidingly and an end opening 13 designed to be fluidically connected to a suction device (not shown) for example, by means of a pipe 16 (see figure 4 ).
  • each of the through holes produced in the element 10 engages integrally with one of the annular scraper elements 12, as can be seen in figure 6 , and each of the scrapers 12 is held in the relative seat 11 of the through holes in the box-like element 10 by a holding plate 15.
  • connection of the scrapers 12, the inlet mouths 11, 14 of the sucked up fluid and the box-like element 10 to confine the powders, allows simultaneous operations to scrape the powders deposited on the outer side surface of the pipes, or suction pipes, 5a-5f, and to draw and suck up the removed powders.
  • each of the through holes is formed of two openings 11 and 14 produced on opposite sides of the box-like element 10.
  • the two openings 11 and 14, as described above, have a diameter that allows a powder drawing pipe 5a, 5b, 5c, 5d, 5e or 5f to be inserted slidingly and the top opening 11 is shaped to hold an annular scraper 12 in place.
  • the two openings 11, 14 have inner surfaces at least partially truncated-cone shaped, so that when connected to a pipe 5a, 5b, 5c, 5d, 5e or 5f a weak Venturi effect is created, capable of holding back the powders removed by the scrapers 12.
  • the powder drawing pipes 5a-5f or 5'a-5'c are extracted from the powder container 6 and the latter is removed. These powder drawing pipes 5a-5f or 5'a-5'c are then cleaned by removal and suction of the powders deposited both on their inner surface and their outer surface.
  • the inside of the pipes 5a-5f or 5'a-5'c are cleaned by a jet of pressurized fluid, delivered by the nozzles 4 or 7a-7c.
  • the operations described above may be performed, with reference to figure 2 , by moving the pipes 5a-5f downwards, in the direction indicated by the arrow C, and keeping the terminal 9 fixed, and applying a suction flow inside the box-like element 10.
  • the device for removal and suction of powders according to the present invention may be easily operated automatically by suitable control means and does not require additional suction powers to those of the suction system of the spray booth.

Landscapes

  • Coating Apparatus (AREA)
  • Cleaning In General (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Prevention Of Fouling (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Claims (19)

  1. Appareil pour le laquage/émaillage par poudre (1) du type comprenant un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f), dans lequel lesdits tubes de prélèvement de poudre relient un moyen (2) destiné à délivrer des poudres (8) à un ou plusieurs réservoirs remplaçables (6) contenant lesdites poudres, et dans lequel lesdits un ou plusieurs tubes peuvent être introduits à l'intérieur de et retirés desdits un ou plusieurs réservoirs, l'appareil comprenant également un dispositif (9) destiné à l'élimination et l'aspiration de poudres en provenance de l'extérieur desdits un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f), caractérisé en ce que ledit dispositif (9) destiné à l'élimination et l'aspiration de poudres comporte un ou plusieurs éléments de raclage (12), dont chacun est associé à la surface latérale extérieure de chacun desdits un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f) de façon à éliminer des poudres déposées sur ladite surface latérale, et un moyen d'aspiration des poudres éliminées de chacun desdits éléments de raclage, chaque tube et l'élément de raclage qui lui est associé étant mobiles l'un par rapport à l'autre.
  2. Appareil pour le laquage/émaillage par poudre (1) du type comprenant un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f), dans lequel lesdits tubes de prélèvement de poudre relient un moyen (2) destiné à délivrer des poudres (8) à un ou plusieurs réservoirs remplaçables (6) contenant lesdites poudres, et dans lequel lesdits un ou plusieurs tubes peuvent être introduits à l'intérieur de et retirés desdits un ou plusieurs réservoirs, l'appareil comprenant également un dispositif (9) destiné à l'élimination et l'aspiration de poudres en provenance de l'extérieur desdits un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f), caractérisé en ce que ledit dispositif (9) destiné à l'élimination et l'aspiration de poudres comporte un ou plusieurs éléments de raclage (12), dont chacun est associé à la surface latérale extérieure de chacun desdits un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f) de façon à éliminer des poudres déposées sur ladite surface latérale, et un moyen d'aspiration des poudres éliminées de chacun desdits éléments de raclage, chaque tube et l'élément de raclage qui lui est associé étant mobiles l'un par rapport à l'autre, et en ce que ledit appareil comporte également un système d'aspiration destiné à aspirer les poudres éliminées de chacun desdits éléments de raclage.
  3. Appareil selon la revendication 1, caractérisé en ce que ledit moyen d'aspiration comprend un ou plusieurs orifices d'entrée (11, 14) pour le fluide aspiré, chacun de ceux-ci étant associé à un seul tube de prélèvement de poudre.
  4. Appareil selon la revendication 3, caractérisé en ce que chacun desdits un ou plusieurs tubes est introduit à l'intérieur de l'orifice d'entrée du fluide aspiré auquel il est associé et en ce que chaque orifice et chaque tube associé sont mobiles l'un par rapport à l'autre.
  5. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit élément de raclage (12) est annulaire et entoure la surface latérale du tube associé.
  6. Appareil selon les revendications 4 et 5, caractérisé en ce que chacun desdits un ou plusieurs racleurs annulaires s'engage en totalité avec la surface intérieure de l'un desdits un ou plusieurs orifices d'entrée.
  7. Appareil selon les revendications 4, 5 ou 6, caractérisé en ce que chacun desdits un ou plusieurs orifices et/ou chacun desdits un ou plusieurs éléments de raclage ont une surface intérieure qui s'engage avec le tube de prélèvement de poudre associé lequel est au moins en partie en forme de cône tronqué.
  8. Appareil selon la revendication 1, caractérisé en ce que ledit dispositif (9) destiné à l'élimination et à l'aspiration de poudres comprend au moins un élément en forme de boîte (10) présentant une forme tubulaire et destiné à enfermer les poudres éliminées.
  9. Appareil selon les revendications 3 et 8, caractérisé en ce que ledit élément en forme de boîte (10) comporte un ou plusieurs trous débouchants, à l'intérieur de chacun desquels l'un desdits un ou plusieurs tubes de prélèvement de poudre s'engage de façon coulissante, lesdits un ou plusieurs trous débouchants formant lesdits orifices d'aspiration.
  10. Appareil selon la revendication 8 ou la revendication 9, caractérisé en ce que ledit élément en forme de boîte comporte également une ouverture pour communiquer de façon fluide avec au moins un dispositif d'aspiration.
  11. Appareil selon la revendication 10, caractérisé en ce que ledit au moins un élément en forme de boîte fait corps d'une seule pièce avec l'un des réservoirs de poudre remplaçables et en ce que lesdits tubes de prélèvement de poudre sont mobiles par rapport auxdits réservoirs.
  12. Appareil selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif (9) destiné à l'élimination et l'aspiration de poudres est mis en action, pendant le déplacement relatif par rapport auxdits un ou plusieurs tubes de prélèvement de poudre, à l'aide d'un moyen de moteur électrique commandé de façon automatique ou manuelle.
  13. Appareil selon la revendication 1, dans lequel ledit moyen de distribution des poudres est enfermé dans une cabine de pulvérisation équipée d'un système d'aspiration, caractérisé en ce que ledit moyen d'aspiration des poudres est disposé en connexion fluide avec ledit système d'aspiration de la cabine de pulvérisation.
  14. Procédé destiné à éliminer des poudres sur l'extérieur de tubes de prélèvement de poudre pour poudres qui peuvent être introduits à l'intérieur de ou retirés d'un ou plusieurs réservoirs remplaçables respectifs pour lesdites poudres, lesdits tubes faisant partie d'un appareil pour le laquage/émaillage par poudre, le procédé comprenant l'étape suivante :
    - retrait desdits un ou plusieurs tubes de prélèvement de poudre de leurs réservoirs respectifs ;
    caractérisé en ce que le procédé comprend les étapes de :
    - raclage de la surface extérieure de chacun desdits un ou plusieurs tubes par le moyen d'un élément de raclage associé à ladite surface latérale extérieure de chaque tube, chaque tube et l'élément de raclage associé à celui-ci étant mobiles l'un par rapport à l'autre, de façon à éliminer la poudre déposée sur ladite surface extérieure ;
    - aspiration de la poudre éliminée.
  15. Procédé selon la revendication 14, dans lequel ladite étape d'aspiration de la poudre éliminée se déroule simultanément avec l'étape de raclage de la surface extérieure de chacun desdits un ou plusieurs tubes.
  16. Procédé destiné à remplacer le pigment colorant ou la matière de recouvrement dans un appareil pour laquage/émaillage par poudre du type comprenant un moyen de distribution de poudres relié de façon fluide à un ou plusieurs tubes de prélèvement de poudre pour ces poudres, lesdits un ou plusieurs tubes pouvant être introduits à l'intérieur de ou retirés d'un ou plusieurs réservoirs remplaçables respectifs pour ces dites poudres, caractérisé en ce qu'il comporte les étapes suivantes :
    a. retrait desdits un ou plusieurs tubes de prélèvement de poudre de leurs réservoirs respectifs ;
    b. raclage de la surface extérieure de chacun desdits un ou plusieurs tubes par le moyen d'un élément de raclage associé à ladite surface latérale extérieure de chacun des tubes, chaque tube et l'élément de raclage associé à celui-ci étant mobiles l'un par rapport à l'autre, de façon à éliminer la poudre déposée sur ladite surface extérieure ;
    c. aspiration de la poudre éliminée ;
    d. envoi d'un jet de fluide sous pression à l'intérieur desdits un ou plusieurs tubes de prélèvement de poudre afin d'éliminer les poudres de l'intérieur ;
    e. aspiration des poudres éliminées de l'intérieur desdits un ou plusieurs tubes de prélèvement de poudre ;
    f. remplacement des réservoirs utilisés par de nouveaux réservoirs de poudres avec un pigment différent ou une substance de revêtement différente ;
    g. introduction desdits un ou plusieurs tubes de prélèvement de poudre à l'intérieur des nouveaux réservoirs.
  17. Dispositif pour l'élimination et l'aspiration (9) de poudres sur l'extérieur d'un ou plusieurs tubes de prélèvement de poudre (a-5f ou 5'a-5'f) destiné à un appareil de laquage/émaillage par poudre (1), dans lequel lesdits un ou plusieurs tubes de prélèvement de poudre connectent de façon fluide un moyen (2) de distribution de poudres (8) à un ou plusieurs réservoirs remplaçables (6) desdites poudres, et dans lequel lesdits un ou plusieurs tubes peuvent être introduits à l'intérieur de et retirés desdits un ou plusieurs réservoirs, caractérisé en ce qu'il comprend un ou plusieurs éléments de raclage (12), chacun de ceux-ci étant associé à la surface latérale extérieure de l'un desdits un ou plusieurs tubes de prélèvement de poudre (5a-5f ou 5'a-5'f), pour l'élimination de poudres déposées sur ladite surface latérale, et en ce qu'il est connecté à un système d'aspiration pour l'aspiration des poudres éliminées de chacun desdits éléments de raclage, chaque tube et l'élément de raclage associé à celui-ci étant mobiles l'un par rapport à l'autre.
  18. Dispositif selon la revendication 17, caractérisé en ce qu'il comprend un moyen destiné à l'aspiration des poudres éliminées de chacun desdits éléments de raclage, un tel moyen d'aspiration étant connecté de façon fluide audit système d'aspiration.
  19. Dispositif selon la revendication 17, caractérisé en ce qu'un tel appareil pour le laquage/émaillage par poudre comprend ledit système d'aspiration.
EP02767762A 2001-10-16 2002-09-06 Dispositif permettant d'eliminer et d'aspirer des poudres de la surface exterieure d'un ou de plusieurs tubes d'aspiration de poudre Expired - Lifetime EP1469948B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI20012132 2001-10-16
IT2001MI002132A ITMI20012132A1 (it) 2001-10-16 2001-10-16 Dispositivo per la rimozione e aspirazione di polveri esternamente dauno o piu' condotti prelievo polvere
PCT/IB2002/003597 WO2003033165A2 (fr) 2001-10-16 2002-09-06 Dispositif permettant d'eliminer et d'aspirer des poudres de la surface exterieure d'un ou de plusieurs tubes d'aspiration de poudre

Publications (2)

Publication Number Publication Date
EP1469948A2 EP1469948A2 (fr) 2004-10-27
EP1469948B1 true EP1469948B1 (fr) 2008-04-30

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EP02767762A Expired - Lifetime EP1469948B1 (fr) 2001-10-16 2002-09-06 Dispositif permettant d'eliminer et d'aspirer des poudres de la surface exterieure d'un ou de plusieurs tubes d'aspiration de poudre

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EP (1) EP1469948B1 (fr)
AT (1) ATE393667T1 (fr)
AU (1) AU2002330686A1 (fr)
DE (1) DE60226348T2 (fr)
ES (1) ES2305293T3 (fr)
IT (1) ITMI20012132A1 (fr)
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JPH06246196A (ja) * 1993-02-22 1994-09-06 I T M Kk 粉体供給装置、静電粉体塗装装置及び粉体流量計測装置
JPH07313922A (ja) * 1994-05-24 1995-12-05 I T M Kk 色替用気体搬送粉体供給システム
DE19506538C2 (de) * 1995-02-24 1999-09-16 Helmut Haas Pulver-Entnahmevorrichtung
DE29518478U1 (de) * 1995-11-21 1996-01-18 Protec Automatisierungssysteme Pulverförderinjektor
US6223997B1 (en) * 1998-09-17 2001-05-01 Nordson Corporation Quick color change powder coating system

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ATE393667T1 (de) 2008-05-15
WO2003033165A3 (fr) 2004-05-27
EP1469948A2 (fr) 2004-10-27
DE60226348T2 (de) 2009-06-10
AU2002330686A1 (en) 2003-04-28
ES2305293T3 (es) 2008-11-01
ITMI20012132A1 (it) 2003-04-16
WO2003033165A2 (fr) 2003-04-24
ITMI20012132A0 (it) 2001-10-16
DE60226348D1 (de) 2008-06-12

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