EP1083995A1 - Systeme d'alimentation en poudre pour installation d'enduction comportant une pluralite d'unites d'application - Google Patents

Systeme d'alimentation en poudre pour installation d'enduction comportant une pluralite d'unites d'application

Info

Publication number
EP1083995A1
EP1083995A1 EP99926366A EP99926366A EP1083995A1 EP 1083995 A1 EP1083995 A1 EP 1083995A1 EP 99926366 A EP99926366 A EP 99926366A EP 99926366 A EP99926366 A EP 99926366A EP 1083995 A1 EP1083995 A1 EP 1083995A1
Authority
EP
European Patent Office
Prior art keywords
powder
basket
supply system
fluidizing
powder supply
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.)
Withdrawn
Application number
EP99926366A
Other languages
German (de)
English (en)
Inventor
Erich Krämer
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.)
Nordson Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1083995A1 publication Critical patent/EP1083995A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
    • B05B7/1445—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means involving vibrations

Definitions

  • the invention relates to a powder supply system for powder coating systems, in particular for powerful large-scale systems for powder coating.
  • powder supply systems have the task of fluidizing powder held in a container and feeding the powder application devices associated with the fluidized powder, such as powder guns and the like.
  • powder delivery container should expediently be used directly at such a powder center for powder preparation and powder supply. At the same time, cleaning should be carried out as quickly, reliably and completely as possible when changing the powder, and should be largely automatic.
  • the invention therefore aims to provide a powder supply system which in particular meets the requirements of high-performance large-scale powder coating systems is sufficient and largely automatic operation in a powder coating system, including its cleaning, is permitted.
  • a powder supply system for powder coating systems is provided for this purpose, which can be used for the central powder supply of several powder application devices or several groups of powder application devices.
  • a new type of suction device is provided in the powder supply system according to the invention, which is also abbreviated below as "powder center”.
  • This suction device is in the form of a rigid plate, preferably made of light metal, such as aluminum, and has through-openings for forming individual suction pipes which penetrate the plate completely.
  • the suction plate thus equipped according to the invention comprises at least two through openings parallel in the width direction of the plate.
  • a basket-like fluidizing device is provided in the design of the powder center according to the invention, which surrounds the suction plate on the outside.
  • This basket-like fluidizing device has fluidizing hoses at the end facing a powder container, which run in the width direction and which have individual fluidizing openings for feeding in fluidizing air.
  • a so-called sieve basket can be arranged between the basket-like fluidizing device and the suction plate, which consists of a sieve mat, a perforated plate or The like exists and is arranged between the basket-like fluidizing device and the suction plate.
  • a support basket can be arranged between the suction plate and the strainer basket.
  • the plate-shaped suction device or the suction plate is fixed in place, while the arrangement of basket-shaped fluidizing device and strainer basket and optionally the support basket are detachably arranged in the powder center.
  • the arrangement of basket-shaped fluidizing device and strainer basket and optionally support basket, which are provided in a nested arrangement, can be removed separately from the suction plate.
  • basket-shaped fluidizing device is mounted at its detachable fastening points in such a way that they carry out a vibration movement.
  • the basket-shaped fluidizing device, the screen basket and, if appropriate, the support basket are expediently mounted together on an oscillating frame. This swing frame mounting is expediently arranged around the fastening end of the suction plate.
  • the suction plate and the functionally assigned devices are provided in a stationary manner in the powder supply system.
  • the powder center according to the invention comprises a lifting table on which the powder container, like the delivery container, rests, the lifting table being designed in such a way that that it can carry out oscillations or vibrations in a suitable manner, so that the powder in the powder storage container can be given a vibrating movement for loosening.
  • the table support for the powder storage container is movable and is therefore designed as a lifting table. With the aid of a suitable lifting device, the lifting table is then raised into the operating position in the direction of the stationary arrangement comprising the suction plate, the basket-shaped fluidizing device, the strainer basket and, if appropriate, the support basket.
  • an automatic pre-cleaning device can be provided under the support table of the lifting table or separately mounted thereon, which preferably comprises conical discharge nozzles.
  • This automatic pre-cleaning device serves to facilitate cleaning work when changing the powder, the conical discharge nozzles with the powder storage container and the arrangement of basket-shaped fluidizing device with strainer basket removed and, if necessary, with the support basket provided when the lifting table is raised with the passage openings of the suction plate via the conical connection with a sealing connection Make the same so that the through openings and any fittings and hose connections connected to them can be blown free.
  • This automatic pre-cleaning device can also be provided as a separate device which is mounted on the lifting table in a suitable manner for cleaning. Alternatively, it can be integrated in the lifting table.
  • the powder supply center is divided into two independent chambers.
  • the operating parts, such as the injector device, control parts therefor and the connections for the powder application devices are arranged in a separate second chamber.
  • the operationally required control and functional parts are expediently combined to form a type of top plate to which the connections to the equipment supply devices are attached and which have through holes which are in communicating connection with the through openings in the suction plate.
  • fluidizing air supply lines which are connected to the basket-shaped fluidizing device, are passed through the head plate and are operationally connected to the corresponding supply devices via assigned control elements.
  • a steam arrangement of control elements can be provided on this second chamber, which can also be called the operating chamber for distinguishing it from the powder preparation chamber, by means of which the corresponding settings for the supply media of the powder supply center can be made.
  • the individual chambers are connected to the powder separation device of the powder coating system via a closable opening and an associated line.
  • the two separate chambers, the powder chamber and the operating chamber can thus be suctioned off separately, and as a result the powder can be effectively and automatically removed from these chambers, in particular when changing the powder.
  • Suitable lifting mechanisms such as cylinder devices, spindle devices and the like, can be used for executing the lifting movement of the lifting table.
  • suction plate provided in the powder center according to the invention could also be designed such that it could move, so that the powder storage container could then be stationary with a vibration movement.
  • the design of the powder preparation device which includes, for example, the suction plate, the basket-shaped fluidizing device, the sieve basket and, if necessary, the support basket, can also be used in other powder supply devices, without the fact that all of the essential aspects of the powder center should be realized in the invention.
  • the subdivision of the powder center into two separate chambers, a so-called powder chamber and an operating chamber, makes the powder center according to the invention user-friendly and clear, and in particular the powder coating system can be operated in such a way that as little powder as possible gets directly into the atmosphere.
  • An essential feature of the powder center according to the invention is the possibility of automatic or at least partially automatic cleaning of the parts belonging to the powder center itself. As a result, the cleaning work required when changing the powder can be simplified considerably and can be carried out quickly and largely automatically.
  • Fig. 1 is a schematic perspective view of a preferred embodiment of a powder supply system according to the invention.
  • Fig. 2 is a schematic view of a powder coating system with a central powder supply system according to Figure 1 and schematically indicated powder application device and downstream powder separation device, for example in the form of a cyclone.
  • This powder center 1 comprises a first chamber 2 shown in the drawing above, a so-called operating chamber.
  • a second, lower chamber 3 a so-called powder chamber, is provided separately. Both chambers 2 and 3 arranged one above the other are divided by a common partition 4.
  • the heart of the powder preparation device of the powder center 1 is arranged in the powder chamber 3 or the powder preparation chamber 3. This powder preparation device is designated 5 overall.
  • a vibration device is arranged between a base plate and the table 7, which vibrates the powder in the powder storage container 6 vibrated by means of the table 7 for loosening.
  • the table 7 can be moved along guides 10 in the upward and downward direction by means of a lifting device 9.
  • a suction device 11 is attached, which is designed in the form of a suction plate 12, which is preferably made of light metal, such as aluminum or the like.
  • This suction plate 12 forming the suction device 11 has through-openings 13 which go continuously and completely through the suction plate 12.
  • the passage openings 13 are preferably arranged in pairs parallel to one another in the width direction of the suction plate 12.
  • the powder preparation device comprises
  • the fluidizing device 14 comprises fluidizing air supply lines 15, which are connected to fluidizing elements 16 of the basket-shaped fluidizing device 14.
  • the fluidizing elements 16 are tubular and extend in the width direction of the basket and the suction plate 12 and contain a plurality of openings through which the fluidizing air can exit.
  • a sieve basket 17 is arranged between the fluidizing device 14, which is configured like a basket, and the suction plate 12, which is formed by a wire mesh with a corresponding mesh size.
  • the inside of the sieve basket can be stiffened by a support basket 18.
  • the support basket 18 then surrounds the suction plate 12 at a distance.
  • the strainer basket 17 and the support basket 18 are designed such that they are accommodated in a nested arrangement in the basket-like fluidizing device. This arrangement of basket-shaped fluidizing device 14, sieve basket 17 and optionally support basket 18 is detachably attached to the partition 4.
  • this arrangement is given an oscillating or vibrating movement in the assembled state, for which purpose an oscillating frame 19 is attached to the partition 4 surrounding the suction plate 12, to which this arrangement of basket-shaped fluidizing device 14, sieve basket 17 and optionally support basket 18 can be attached.
  • an oscillating frame 19 is attached to the partition 4 surrounding the suction plate 12, to which this arrangement of basket-shaped fluidizing device 14, sieve basket 17 and optionally support basket 18 can be attached.
  • the operating means control devices and the supply devices for powder application devices are accommodated in the first chamber 2 or the operating chamber 2. With the surface of the partition 4 facing the operating chamber, a connection and distribution plate 20 is connected.
  • This distributor plate 20 contains through bores which are in communicating connection with the through openings 13 of the suction plate 12.
  • the hose connection connections 21 for the operating means are then indicated on the upper side of the distributor plate 20.
  • the injectors for conveying the processed powder to the powder application devices are also arranged there in a clearly arranged manner.
  • the operating chamber 2 comprises, for example, a control field 22 which contains corresponding control and display elements which are necessary for setting the operation of the operating resources which are accommodated in the operating chamber 2.
  • control and display elements arranged in the control field 22 are a body control part which is connected to the powder center 1 is provided for setting the desired operating conditions.
  • the basic control functions are carried out separately from switchgear provided separately.
  • FIG. 2 shows the operating chamber 2 and the powder chamber 3 on all sides, and access doors 23 can be provided at suitable points. Furthermore, closable openings 24, 25 are provided in the walls of the two chambers 2, 3, which openings are connected via connecting lines 26, 27 to a powder separating device 28 belonging to the entire powder coating system. This is shown, for example, in FIG. 2 as a cyclone. FIG. 2 also schematically shows one of a plurality of powder application devices 29 contained, which is connected to the powder supply center 1, as indicated schematically.
  • the powder supply center 1 is shown in its working position, in which the lifting table 7 with the powder storage container 6 has been raised relative to Figure 1 in such a way that the arrangement of the suction plate 12, fluidizing device 14, sieve basket 17 and optionally support basket 18 into the powder in the powder storage container immersed.
  • the closable openings 24, 25 of the two chambers 2, 3 can be opened and the powder possibly present in these chambers 2, 3 can be conveyed to the powder separation device 28.
  • an automatic pre-cleaning device can be integrated in the lifting table 7 or separately from it, which comprises conical blow-out nozzles at its ends.
  • the powder storage container 6 is removed from the lifting table 7, and the arrangement, comprising the basket-shaped fluidizing device 14, the screen basket 17 and possibly the support basket 18 is removed from the swing frame 10.
  • the lifting table 7 is raised with the ready-to-use blow-out nozzles in the direction of the suction plate 12 and the conically shaped blow-out nozzles form a tight seal with the through openings 13 of the suction plate 12.
  • the passage openings 13 and the associated devices for pre-cleaning are then blown free with compressed air.
  • This pre-cleaning device can also be designed as an independent device from the table 7 and can then, if necessary, be mounted on the lifting table in a suitable manner.
  • a central powder supply system a so-called powder center
  • the powder center is divided into two separate chambers, an operating chamber and a powder chamber. Both chambers can be connected to a powder separation device via a closable opening.
  • the powder preparation device is essentially arranged in the powder chamber, while the operating parts and supply parts are combined in the operating chamber.
  • the powder preparation device comprises a height-adjustable lifting table with a vibration device for the powder storage container lying there.
  • a suction plate is arranged as a suction device, which has through openings. This suction plate is surrounded by a strainer basket, which may have a support basket.
  • the fluidizing device is then provided, which is configured like a basket, and in which the sieve basket and optionally the support basket are provided in a nested arrangement.
  • the arrangement of fluidizing device, sieve basket and, if applicable, support basket is detachably arranged in the powder chamber and connected to a swing frame. bound, which gives this arrangement a vibratory movement.
  • the suction plate is stationary in this powder center, while the lifting table with the storage container can be moved in height.
  • the powder center enables fast cleaning largely automatically when changing powder and enables high-performance powder preparation for large powder coating systems.

Abstract

L'invention concerne un système central d'alimentation en poudre, dénommé 'centre d'alimentation en poudre' (1), destiné en particulier à des installations industrielles à haute performance pour l'application de revêtements en poudre. Ce centre d'alimentation en poudre (1) est divisé en deux chambres séparées (2, 3), une chambre de service (2) et une chambre à poudre (3). Les deux chambres (2, 3) peuvent être reliées à une unité de séparation de poudre par l'intermédiaire d'une ouverture obturable. La chambre à poudre (3) abrite essentiellement l'unité de préparation de poudre (5) tandis que la chambre de service (2) comprend les éléments fonctionnels (22) et les éléments d'alimentation (20, 21). L'unité de préparation de poudre (5) comprend un plateforme mobile (7) pouvant être déplacée en hauteur et comportant une unité génératrice de vibrations pour le réservoir de poudre (6) placé à l'intérieur. En outre, il est prévu une plaque d'aspiration (12) servant d'unité d'aspiration, qui présente des orifices de passage (13). Cette plaque d'aspiration (12) est entourée d'un panier à tamis (17) présentant éventuellement un panier d'appui (18). A une certaine de ce dernier est prévue une unité de fluidification (14) se présentant sous la forme d'un panier et dans laquelle le panier à tamis (17) et éventuellement le panier d'appui (18) sont emboîtés l'un dans l'autre. Ce centre d'alimentation en poudre permet un nettoyage rapide et largement automatique, lors du changement de poudre.
EP99926366A 1998-05-22 1999-05-21 Systeme d'alimentation en poudre pour installation d'enduction comportant une pluralite d'unites d'application Withdrawn EP1083995A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE1998123068 DE19823068A1 (de) 1998-05-22 1998-05-22 Pulverversorgungssystem für Pulverbeschichtungsanlage
DE19823068 1998-05-22
PCT/EP1999/003524 WO1999061162A1 (fr) 1998-05-22 1999-05-21 Systeme d'alimentation en poudre pour installation d'enduction comportant une pluralite d'unites d'application

Publications (1)

Publication Number Publication Date
EP1083995A1 true EP1083995A1 (fr) 2001-03-21

Family

ID=7868700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99926366A Withdrawn EP1083995A1 (fr) 1998-05-22 1999-05-21 Systeme d'alimentation en poudre pour installation d'enduction comportant une pluralite d'unites d'application

Country Status (3)

Country Link
EP (1) EP1083995A1 (fr)
DE (1) DE19823068A1 (fr)
WO (1) WO1999061162A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903578A1 (de) * 1999-01-29 2000-08-03 Erich Kraemer Zentrale Pulverversorgungsanlage
DE10101366A1 (de) 2001-01-13 2002-08-08 Itw Gema Ag Sprühbeschichtungs-Pulverzentrum
US8033241B2 (en) 2006-06-22 2011-10-11 Nordson Corporation Supply for dry particulate material
US9816189B2 (en) 2013-03-15 2017-11-14 Honda Motor Co., Ltd. Corrosion inhibiting compositions and coatings including the same
DE102014223307B4 (de) * 2014-11-14 2020-07-16 Gema Switzerland Gmbh Pulverbehälter zur Versorgung einer Sprühbeschichtungsanlage mit Beschichtungspulver

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4423254C2 (de) * 1994-07-02 1998-11-05 Gema Volstatic Ag Pneumatische Fördervorrichtung für Pulver, insbesondere Beschichtungspulver
DE19517229A1 (de) * 1995-05-11 1996-11-14 Gema Volstatic Ag Verfahren und Vorrichtung zur Pulver-Sprühbeschichtung
DE19538926A1 (de) * 1995-10-19 1997-04-24 Gema Volstatic Ag Vorrichtung zur Pulverbeschichtung
DE29518478U1 (de) * 1995-11-21 1996-01-18 Protec Automatisierungssysteme Pulverförderinjektor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9961162A1 *

Also Published As

Publication number Publication date
DE19823068A1 (de) 1999-11-25
WO1999061162A1 (fr) 1999-12-02

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