EP1433539B1 - Récipient pour produits pulvérulents - Google Patents

Récipient pour produits pulvérulents Download PDF

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Publication number
EP1433539B1
EP1433539B1 EP03027529A EP03027529A EP1433539B1 EP 1433539 B1 EP1433539 B1 EP 1433539B1 EP 03027529 A EP03027529 A EP 03027529A EP 03027529 A EP03027529 A EP 03027529A EP 1433539 B1 EP1433539 B1 EP 1433539B1
Authority
EP
European Patent Office
Prior art keywords
housing
floor
reservoir according
powder
fluidising
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
Application number
EP03027529A
Other languages
German (de)
English (en)
Other versions
EP1433539A2 (fr
EP1433539A3 (fr
Inventor
Jan Reichler
Erwin Hihn
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.)
Eisenmann Anlagenbau GmbH and Co KG
Original Assignee
Eisenmann Anlagenbau GmbH and Co KG
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 Eisenmann Anlagenbau GmbH and Co KG filed Critical Eisenmann Anlagenbau GmbH and Co KG
Publication of EP1433539A2 publication Critical patent/EP1433539A2/fr
Publication of EP1433539A3 publication Critical patent/EP1433539A3/fr
Application granted granted Critical
Publication of EP1433539B1 publication Critical patent/EP1433539B1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
    • B05C19/02—Apparatus specially adapted for applying particulate materials to surfaces using fluidised-bed techniques

Definitions

  • storage containers for powdery media are frequently required, in which a certain amount of the powdered medium can be temporarily stored, in order then to be withdrawn for further use.
  • Such storage containers can be found, for example, before, after or in screening machines, which are in paint systems the application equipment with which the paint powder is sprayed onto a workpiece upstream.
  • screening machines which are in paint systems the application equipment with which the paint powder is sprayed onto a workpiece upstream.
  • In supply containers downstream of the screening machines generally so much sieved coating powder is accumulated, as is required for complete painting of a workpiece.
  • US 3,355,222 discloses a feeder for powdered media with a generic storage container. It is designed as a circular cylindrical tube, in the upper part of a screen plate is arranged. The fluidization of the powder takes place in a cylindrical tube by vibration via rotating eccentrically mounted masses. The supply of gas through a tube through a porous sintered plate serves to force powder particles through the exit funnel as soon as sufficient pressure is built up.
  • Object of the present invention is to provide a storage container of the type mentioned in such a way that the compressed air consumption is reduced and the quality of the discharged powdered medium is improved.
  • the inventive, funnel-shaped downwardly tapering shape of the housing has several positive consequences. In the foreground is the reduction of the surface of the fluidization floor, which is almost proportional to a corresponding reduction in the demand for compressed air. A desirable side effect is that a certain amount of powdered medium, which is located above the Fluidmaschines Camills occupies a greater height in the inventive shape of the housing than was the case with known storage containers. However, the greater height of the fluidized powder above the fluidizing bottom may require a somewhat greater pressure of the compressed air, which is generally of no importance in practice.
  • Due to the funnel shape of the housing of the storage container according to the invention also sets in the interior of a better mixing of the powdery medium. This reduces the risk of air bubbles being sucked into the downstream system.
  • the cross section of the housing in the region of the fluidization bottom is about one tenth, more preferably about one twentieth of the maximum cross section of the housing or less.
  • the cross section of the housing in the region of the fluidization bottom is about one tenth, more preferably about one twentieth of the maximum cross section of the housing or less.
  • the powdery medium taken from the reservoir has substantially the same grain composition as the powdered medium within the reservoir; It is therefore not preferred that a larger or finer grain fraction be discharged, as was the case with known storage containers.
  • the housing is at least partially made of plastic. This reduces the risk of caking powder paint on the inner surfaces of the housing. If one selects a transparent plastic, in particular acrylic glass, then the running within the housing movement processes of the powdery medium can be visually observed and monitored.
  • FIGURE shows a vertical section through a paint powder screening machine, in which an inventive storage container is integrated.
  • the screening machine for paint powder shown in the drawing and generally designated by the reference numeral 1 comprises a housing 2, in which a horizontal Sieve bottom 3 is arranged.
  • the housing 2 has in all horizontal sectional planes a circular outer contour, the diameter of which varies depending on the height.
  • the housing 2 has the largest diameter at the level of the sieve bottom 3.
  • the inlet area 2a of the housing 2 lying above the sieve bottom 3 tapers conically upwards, so that a conical shape is created.
  • an inlet port 4 can be supplied via the paint powder.
  • the outlet region 2b of the housing 2 situated below the sieve bottom 3 serves as a powder feed container for downstream application devices, as will become clear below.
  • the outlet region 2b can again be divided into three partial regions 2ba, 2bb and 2bc from top to bottom.
  • the uppermost, the sieve bottom 3 adjacent portion 2 ba runs down conically with a relatively small cone angle to the horizontal.
  • the adjoining the portion 2ba down portion 2bb is also conical, but with the horizontal enclosed cone angle is considerably larger.
  • the lowermost region 2bc of the outlet region 2a is circular cylindrical.
  • the cross-sectional area of the housing 2 in the lowermost cylindrical area 2bc is only about 1/2 of the cross-sectional area of the housing 2 in the region of the sieve bottom 3.
  • the intake funnels 8, 9 are each provided with rigid, integrally formed line sections 8a, 9a, which pass through the cylinder wall of the section 2bc of the housing 2 and are connected there to hoses 10, 11.
  • the hoses 10, 11 each lead to a powder pump 12, 13 and from there to an application device, not shown in the drawing, for example, a powder bell, with which the powder is sprayed onto a workpiece.
  • the housing 2 has a radially projecting, annular flange 14. This flange 14 rests on its underside on a plurality of weighing cells 15 distributed over the circumference, which in turn are supported on a space-fixed support 17 via rubber buffers 16.
  • a level sensor 18 is mounted, which in principle may have any known construction.
  • the electrical signal generated by this level sensor 18 is fed via a line 19 to a computer which controls the entire screening machine 1.
  • the screening machine 1 described above operates as follows:
  • a quantity of paint powder is metered into the interior of the inlet region 2a with the aid of a metering valve, not shown, which is required for the complete painting of a workpiece.
  • This amount of paint can with the help of load cells 15, on which rests the entire screening machine 1, are monitored. Since the sieve bottom 3 is relatively large, the amount of powder applied to it is distributed; the screening into the lying below the sieve tray 3 outlet 2b is therefore relatively quickly.
  • the screened powder reaching into the outlet region 2b completely fills the interior of the lowermost portion 2bc lying above the fluidization bottom 5 and, moreover, the central portion 2bb and possibly also the portion 2ba adjacent to the sieve bottom 3 up to a certain height. Due to the smaller cross section of the subregions 2bc, 2bb and 2ba in the outlet region 2b, the paint powder there is considerably higher than in the inlet region 2a above the sieve 3.
  • the screening process is completed correctly when the level sensor 18 in the outlet region 2b of the housing 2 determines that level, which substantially corresponds to the full, added via the inlet port 4 paint volume.
  • the pressure chamber 6 below the Fluidleitersteils 5 is supplied via the supply line 7 with compressed air, which penetrates the Fluidmaschinesteil 5 upwards and fluidized the paint powder in a known manner. So this is constantly in motion. Due to the funnel shape of the conical portions 2bb and 2ba, the paint powder flow in these subregions additionally receives a defined vortex component, which ensures that thorough mixing of all grain sizes in the paint powder takes place. Due to the fact that the sections 2bb and 2ba expand conically upwards, the flow velocity of the paint powder also drops there, which protects the paint powder and thus ensures a lower fine grain formation.
  • the screening process has been completed, that is, essentially the entire metered-in paint powder has passed through the sieve bottom 3, then the painting process can be started.
  • the pumps 12 and 13 are activated in the hoses 10, 11.
  • the fluidized powder paint is now sucked substantially from the conical portions 2bb and, if necessary, 2ba of the outlet region 2b of the screening machine 1.
  • a particularly homogeneous powder powder mixture is discharged, which in particular also contains a fine grain content, the fine grain content of the entire located in the outlet region 2b and There corresponds to circulating paint powder.

Landscapes

  • Coating Apparatus (AREA)
  • Nozzles (AREA)
  • Electrostatic Spraying Apparatus (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Powder Metallurgy (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Claims (7)

  1. Récipient collecteur pour agents pulvérulents, notamment de la poudre de laque, comprenant
    a) un boîtier (2) muni d'au moins une admission (4), et une partie de caisson (2b) disposée au-dessous d'un fond criblé (3), et présentant une sortie (8, 9) destinée à l'agent pulvérulent ;
    b) un fond de fluidification (5) en un matériau poreux perméable à l'air, logé dans l'espace interne de la partie de caisson (2b), à distance du fond de cette dernière,
    c) une chambre de pression (6) interposée entre le fond de fluidification (5) et le fond de la partie de caisson, et pouvant être sollicitée par de l'air comprimé,
    caractérisé par le fait que
    d) la section transversale de la partie de caisson (2b)
    da) se rétrécit vers le bas, en direction du fond de fluidification (5), et
    db) représente, dans la région dudit fond de fluidification (5), environ un dixième de la section transversale maximale de ladite partie de caisson (2b), ou moins,
    e) la sollicitation de la chambre de pression (6), par de l'air comprimé, a lieu de telle sorte que l'agent pulvérulent soit intégralement fluidifié, au-dessous du fond criblé (3), par l'air circulant à travers le fond de fluidification (5).
  2. Récipient collecteur selon la revendication 1, caractérisé par le fait que la section transversale de la partie de caisson (2b) représente, dans la région du fond de fluidification (5), environ un vingtième de la section transversale maximale de ladite partie de caisson (2b), ou moins.
  3. Récipient collecteur selon la revendication 1 ou 2, caractérisé par le fait que le tronçon (2bc) de la partie de caisson (2b), situé directement au-dessus du fond de fluidification (5), est de configuration cylindrique.
  4. Récipient collecteur selon la revendication 3, caractérisé par le fait que la sortie (8, 9), prévue au minimum, se trouve dans le tronçon cylindrique (2bc) de la partie de caisson (2b).
  5. Récipient collecteur selon la revendication 4, caractérisé par le fait que la sortie (8, 9), prévue au minimum, revêt la forme d'un entonnoir ouvert vers le haut.
  6. Récipient collecteur selon l'une des revendications précédentes, caractérisé par le fait que la partie de caisson (2b) est au moins partiellement constituée d'une matière plastique.
  7. Récipient collecteur selon la revendication 6, caractérisé par le fait que la partie de caisson (2b) est au moins partiellement constituée d'une matière plastique transparente, en particulier du verre acrylique.
EP03027529A 2002-12-27 2003-11-29 Récipient pour produits pulvérulents Expired - Lifetime EP1433539B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10261276 2002-12-27
DE10261276A DE10261276B4 (de) 2002-12-27 2002-12-27 Vorlagebehälter für pulverförmige Medien

Publications (3)

Publication Number Publication Date
EP1433539A2 EP1433539A2 (fr) 2004-06-30
EP1433539A3 EP1433539A3 (fr) 2004-11-24
EP1433539B1 true EP1433539B1 (fr) 2006-06-07

Family

ID=32404339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03027529A Expired - Lifetime EP1433539B1 (fr) 2002-12-27 2003-11-29 Récipient pour produits pulvérulents

Country Status (5)

Country Link
US (1) US6948888B2 (fr)
EP (1) EP1433539B1 (fr)
CN (1) CN100554101C (fr)
AT (1) ATE328672T1 (fr)
DE (2) DE10261276B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7279023B2 (en) * 2003-10-02 2007-10-09 Materials And Electrochemical Research (Mer) Corporation High thermal conductivity metal matrix composites
EP1778417A4 (fr) * 2004-08-20 2013-06-19 Ricoh Co Ltd Contenant à poudre, procédé de nettoyage et appareil de nettoyage pour nettoyer le contenant à poudre
DE102004059870B4 (de) * 2004-12-13 2011-06-22 EISENMANN Anlagenbau GmbH & Co. KG, 71032 Verfahren und Anlage zur Beschichtung von Gegenständen
DE102008016395A1 (de) * 2008-03-29 2009-10-08 Eisenmann Anlagenbau Gmbh & Co. Kg Vorlagebehälter für pulverförmige Medien, Anlage zum Fördern von pulverförmigen Medien sowie Verfahren zum Betreiben einer solchen
US9849462B2 (en) * 2014-09-16 2017-12-26 Snoby Separation Systems, Llc Sifting apparatuses

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1087426A (fr) * 1953-07-30 1955-02-23 Pechiney Perfectionnement au transport de matières pulvérulentes
US2877056A (en) * 1957-03-13 1959-03-10 United Conveyor Corp Method of and apparatus for feeding hot pulverulent material to a storage bin
US2955878A (en) * 1958-04-16 1960-10-11 United Conveyor Corp Ash hopper
US3093418A (en) * 1960-09-22 1963-06-11 Allan M Doble Fluidising and feeding of finely divided materials
US3179378A (en) * 1962-12-26 1965-04-20 Ducon Co Apparatus for mixing and transporting finely divided solids
US3149884A (en) * 1963-01-07 1964-09-22 Magnet Cove Barium Corp Pneumatic conveyer
US3226166A (en) * 1964-06-09 1965-12-28 Pullman Inc Pneumatic apparatus for handling pulverulent materials
US3355222A (en) * 1966-04-04 1967-11-28 James R Neely Gyratory fluidized solids feeder
US3501062A (en) * 1967-09-22 1970-03-17 Continental Can Co Powder dispensing device
US3432208A (en) * 1967-11-07 1969-03-11 Us Air Force Fluidized particle dispenser
DE1902069A1 (de) * 1969-01-16 1970-07-23 Polysius Ag Behaelter zur Aufnahme von feinkoernigem Gut
DE1912733A1 (de) * 1969-03-13 1970-10-01 Bayer Ag Verfahren und Vorrichtung zum pneumatischen Foerdern von Schuettgut
GB1522448A (en) * 1977-05-03 1978-08-23 Hascon Ltd Apparatus for transporting flowable particulate material
US4262034A (en) * 1979-10-30 1981-04-14 Armotek Industries, Inc. Methods and apparatus for applying wear resistant coatings to roto-gravure cylinders
US4502820A (en) * 1982-08-16 1985-03-05 Denka Engineering Kabushiki Kaisha High-pressure conveyor for powdery and granular materials
GB2132966A (en) * 1982-12-21 1984-07-18 Armotek Ind Inc Powder feeder
US4834587A (en) * 1987-05-28 1989-05-30 Macawber Engineering, Inc. Pneumatic conveying system
US4762382A (en) 1987-06-29 1988-08-09 Honeywell Inc. Optical interconnect circuit for GaAs optoelectronics and Si VLSI/VHSIC
US4863316A (en) * 1987-07-01 1989-09-05 The Perkin-Elmer Corporation Closed loop powder flow regulator
DE3743637A1 (de) * 1987-12-22 1989-07-06 Krupp Polysius Ag Silo fuer schuettgut
GB2226257B (en) * 1988-11-30 1992-07-22 City Electrical Factors Ltd Powdering cables
US5269463A (en) * 1991-09-16 1993-12-14 Plastic Flamecoat Systems, Inc. Fluidized powder feed system with pressurized hopper
DE19716557A1 (de) * 1997-04-19 1998-10-22 Armin Schnell Schüttgutdosierer
US6220791B1 (en) * 1999-03-11 2001-04-24 Board Of Trustees Of The University Of Arkansas Apparatus and method for the aerosolization of powders
JP3933931B2 (ja) * 1999-07-08 2007-06-20 協和醗酵工業株式会社 粉体材料噴霧装置
DE10050923C2 (de) 2000-10-13 2003-04-30 Lorch Schweisstech Gmbh Elektrische Schaltungsanordnung zur Erzeugung von Zündimpulsen für Schweisslichtbögen

Also Published As

Publication number Publication date
EP1433539A2 (fr) 2004-06-30
EP1433539A3 (fr) 2004-11-24
US20040197153A1 (en) 2004-10-07
DE10261276A1 (de) 2004-07-22
DE50303672D1 (de) 2006-07-20
CN100554101C (zh) 2009-10-28
DE10261276B4 (de) 2005-12-01
US6948888B2 (en) 2005-09-27
ATE328672T1 (de) 2006-06-15
CN1511768A (zh) 2004-07-14

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