EP1731230A1 - dispositif de tamisage de poudre - Google Patents

dispositif de tamisage de poudre Download PDF

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Publication number
EP1731230A1
EP1731230A1 EP06009773A EP06009773A EP1731230A1 EP 1731230 A1 EP1731230 A1 EP 1731230A1 EP 06009773 A EP06009773 A EP 06009773A EP 06009773 A EP06009773 A EP 06009773A EP 1731230 A1 EP1731230 A1 EP 1731230A1
Authority
EP
European Patent Office
Prior art keywords
powder
coating powder
coating
sieve
screening device
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Withdrawn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
EP06009773A
Other languages
German (de)
English (en)
Inventor
Hans-Georg Fritz
Marcus Treppschuh
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
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 Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP1731230A1 publication Critical patent/EP1731230A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
    • B07B1/346—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with electromagnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/40—Resonant vibration screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens

Definitions

  • the invention relates to a coating powder screening device for a powder coating system.
  • powder management centers In powder coating systems so-called powder management centers (PMC) are used for powder supply, in which the coating powder is fluidized so that it can be fed into the powder circuit of the powder coating plant.
  • PMC powder management centers
  • Such powder management centers essentially consist of a cylindrical container with a round ultrasound sieve arranged on top and a likewise round fluidization bottom arranged on the underside.
  • the powder management center is filled with the coating powder via the ultrasound sieve by applying fresh powder and / or recycling powder to the upper side of the sieve surface of the ultrasound sieve so that suitable coating powder is sieved through the sieve surface into the container.
  • the fluidized coating powder may then pass through a side outlet in the container from a powder feed pump, such as a DDF pump, and pumped to an application device such as a powder atomizer.
  • a powder feed pump such as a DDF pump
  • an application device such as a powder atomizer
  • WO 99/10111 A1 a screening device is known in which a square screen surface rests loosely on a screen frame, wherein the screen surface is excited by an imbalance motor to low-frequency vibration oscillations in a frequency range from 0 to 480 Hz.
  • This is therefore not a generic ultrasonic sieve device, so that the shape of the screen surface due to the low-frequency vibration excitation does not matter here.
  • the invention is therefore based on the object to reduce the space required in the known powder management center described above.
  • the screen surface at its downwardly inclined side edge preferably opens into a dirt discharge, via which the screened-out dirt particles can be removed in a collected manner.
  • a dirt discharge may, for example, have a channel which extends along the downwardly inclined side edge of the screen surface and which catches the dirt particles migrating laterally over the screen surface.
  • the screen surface in the coating powder screening device according to the invention has a mesh width which is preferably in the micrometer range lies.
  • the mesh size of the screen surface can be in the range of 60 ⁇ m to 200 ⁇ m.
  • the coating powder screening device according to the invention has a screening capacity which can, for example, be in the range from 20 kg / h to 200 kg / h.
  • the screen surface is mounted in a special way.
  • the screen surface is fixed in the region of its side edges by at least one sponge rubber element and / or at least one solid rubber element.
  • each have a foam rubber element are arranged so that the screen surface between the upper foam rubber element and the lower foam rubber element is fixed.
  • the invention is not limited to sponge rubber with respect to the material of the rubber elements, but also with other solid rubber elements or sealing profiles for fixing the screen surface feasible.
  • baffle plate is preferably arranged in the upper region of the inclined screen surface, since the coating powder passes independently due to the inclination of the screen surface in the lower region of the screen surface.
  • the baffle plate is thus preferably arranged in the upper half, the upper third or even the upper quarter of the inclined screen surface, wherein the optimal arrangement of the baffle plate within the screen surface also depends on the inclination angle of the screen surface.
  • inventive idea of a square design is applicable not only to a screen surface in a coating powder screen, but also to a powder application container such as a powder management center.
  • the invention therefore also encompasses such a powder application container with an angular cross section in the horizontal direction.
  • a coating powder sieve device according to the invention is located on the upper side, wherein the sieve surface of the coating powder sieve device is adapted in shape and size to the cross section of the powder application container.
  • the deposition of coating powder on the inner wall of the powder application container can also be prevented within the scope of the invention in that the powder application container has inner walls which run substantially vertically below the coating powder sieve and have no bevels, whereas the powder application container in the known powder described above Management Centers flared conically upwards, which can lead to caking of the coating powder on the inner wall.
  • the powder application container according to the invention preferably has a fluid level sensor for measuring the fluid level of the fluidized coating powder present in the powder application container, wherein the fluid level sensor may be of conventional design (eg as an ultrasonic sensor).
  • a further advantage of the rectangular design of the powder application container according to the invention is that more than six outlets for connecting application pumps can be arranged in the side wall of the powder application container, whereby the individual connections can be cleaned better and are exposed to more constant suction conditions than with the known powders described above Management Centers with a circular cross-section.
  • eight or more connections for application pumps can be arranged in the side wall of the powder application container according to the invention.
  • a fluid density control is provided so that the fluidized coating powder present in the powder application container always has a predetermined constant fluid density.
  • a powder feed pump is provided for conveying the coating powder into the powder application container and a fluid level sensor for measuring the fluid density in the powder application container.
  • the regulation The fluid density in the application container is effected by an air quantity regulator which controls the amount of fluid air in such a way that the density calculated from the measured fluid height and the mass of the powder coating located in the container corresponds to the predetermined value.
  • the invention also encompasses the novel use of a screening device according to the invention for screening coating powder in a powder coating system.
  • the powder container 2 On its upper side, the powder container 2 has a peripheral frame 6, on which a lid 7 is pivotally mounted, wherein the lid 7 can be fixed by means of a clamping closure 8 in the closed state.
  • a rectangular screen surface 9 Between the cover 7 and the frame 8 is a rectangular screen surface 9, wherein the rectangular screen surface 9 is excited in a conventional manner by an ultrasonic generator, which is not shown for simplicity.
  • the screen surface 9 here consists of a screen fabric 9.1, which is mounted on a screen frame 9.2, as can be seen in particular from Figure 2.
  • a powder inlet for fresh powder and another powder inlet for recycling powder open into the lid 7 above the sieve surface 9, wherein the supplied coating powder is distributed on the upper side of the sieve surface 9 and sieved through the screen surface 9 therethrough.
  • the two powder containers for fresh powder or recycled powder are not shown here for the sake of simplicity.
  • outlets 10 are arranged on the side wall of the powder container 2 in the lower portion 2.1 of the powder container 2 below the slope, can be connected to the application pumps.
  • the arrangement of the outlets 10 on the longer side wall of the rectangular powder container 2 offers the advantage that prevail at the individual outlets 10 approximately constant Absaug claim.
  • FIG. 4A shows the fixing of the sieve surface 9 between the cover 7 and the frame 6 of the powder management center 1. It can be seen that the sieve surface 9 is in each case surrounded by a rectangular encircling foam rubber element 11 or 12 at the upper side or at the lower side is fixed, resulting in a good vibration behavior.
  • FIG. 4B shows an alternative possibility for fixing the screen surface 9 between the frame 6 and the cover 7.
  • rectangular hollow rubber profiles 13, 14 are provided on the outside of the screen surface 9, which support the screen surface 9 in a vibration-damped manner in the vertical direction.
  • On the underside of the screen surface 9 more rigid supports 15 are also provided within the rectangular circumferential hollow rubber profile 14, wherein the supports 15 are each a point-shaped support form.
  • a buffer element 16 is disposed between the frame 6 and the lid 7.
  • the powder management center 1 allows a fluid density control, so that via the outlets 10 a powder flow with a constant fluid density is discharged.
  • the powder management center 1 has a fluid level sensor 17 with a measuring tube 18, wherein the measuring tube 18 protrudes into the upper area 2.2 of the powder container 2, so that the fluid level is measured there.
  • the fluid height thus measured can then be supplied to an air flow regulator, which controls the amount of fluid air so that the fluid density calculated from the measured fluid height and the mass of the coating powder 5 present in the powder container 2 corresponds to a default value.
  • FIG. 4C shows a further alternative variant for fixing the screen surface 9 between the frame 6 and the cover 7.
  • This variant is partially identical to the variants described above, so that reference is made to the above description to avoid repetition, wherein the same applies to corresponding elements Reference numerals are used.
  • a special feature of this variant is that in a ring-shaped circumferential shoulder between the cover 7 and the frame 6 a likewise annular circumferential seal 14 'is arranged.
  • Figure 5 shows a cross-sectional view of an alternative embodiment of a powder management center 1, which is largely consistent with the embodiment described above, so to avoid repetition, reference is made largely to the above description, wherein the same reference numerals are used for corresponding parts.
  • FIG. 6 shows the arrangement of the outlets 10 in the side wall of the powder container 2. From this representation, it can be clearly seen that the individual outlets 10 are exposed to approximately the same extraction conditions.
  • Figures 7 and 8 show a schematic representation of a screen surface 22, which is inclined relative to the horizontal by an inclination angle of ⁇ approximately equal to 5 °, so that dirt particles on the top of the screen surface 22 of gravity following the lower side edge of the screen surface 22 to migrate where the dirt particles are taken up by a dirt discharge 23.
  • the dirt discharge 23 in this case extends in the shape of a channel along the downwardly inclined side edge of the sieve surface 22, so that the dirt particles are collected by the entire sieve surface 22 in the dirt discharge 23.
  • the powder coating charge takes place here via a powder feed 24, which is directed to a baffle plate 25, which is located in the upper third of the inclined screen surface 22.
  • FIG. 9 shows a plan view of a material supply of a coating line 26 with several powder management centers 27-32, which are arranged laterally next to the coating line.
  • the rectangular design of the Powder Management Center 25-30 allows for a tight setup, which allows a multi-color concept.
  • FIGS. 10A and 10B illustrate the modular structure of the powder management center 1 according to the invention, comprising the lower area 2.1 of the powder container 2, the upper area of 2.2 of the powder container 2 and a screening device 33.
  • This modular structure of the powder management center 1 makes it possible to retrofit conventional powder management centers by exchanging the upper region 2.2 of the powder container 2 and the sieve device 33.

Landscapes

  • Coating Apparatus (AREA)
EP06009773A 2005-05-31 2006-05-11 dispositif de tamisage de poudre Withdrawn EP1731230A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005024854A DE102005024854B3 (de) 2005-05-31 2005-05-31 Beschichtungspulver-Siebeinrichtung

Publications (1)

Publication Number Publication Date
EP1731230A1 true EP1731230A1 (fr) 2006-12-13

Family

ID=36914976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06009773A Withdrawn EP1731230A1 (fr) 2005-05-31 2006-05-11 dispositif de tamisage de poudre

Country Status (3)

Country Link
US (1) US7802687B2 (fr)
EP (1) EP1731230A1 (fr)
DE (1) DE102005024854B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028613A1 (fr) * 2006-09-05 2008-03-13 Dürr Systems GmbH pompe de transport de poudre pour le transport de poudre de revêtement dans une installation de revêtement par poudre et procédé d'utilisation correspondant
CN109807057A (zh) * 2019-03-19 2019-05-28 焦作天宝桓祥机械科技有限公司 一种多源组合式金刚石微粉选型盘

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DE102007040154A1 (de) * 2007-08-24 2009-05-07 Dürr Systems GmbH Verfahren zur Versorgung einer Beschichtungsanlage mit einem partikelförmigen Hilfsmaterial
DE102010009069A1 (de) * 2010-02-23 2011-08-25 Wurster, Gerd, 70191 Vorrichtung und Verfahren zur Pulverbeschichtung von Gegenständen
DE102011004595A1 (de) * 2011-02-23 2012-08-23 Illinois Tool Works Inc. Siebeinsatz für einen Pulverbehälter einer Pulverversorgungsvorrichtung
FR2979262B1 (fr) * 2011-08-30 2013-09-13 Meur Jean-Pierre Le Dispositif et procede de separation de produits
US9162245B1 (en) 2012-03-29 2015-10-20 BTD Wood Powder Coating, Inc. Powder coating conveyor support
WO2014110486A1 (fr) 2013-01-14 2014-07-17 Blair Taylor K Analyse acoustique d'un composant comportant un espace interne conçu pour l'écoulement de fluide
US9205458B2 (en) * 2013-07-17 2015-12-08 Toyota Motor Engineering & Manufacturing North America, Inc. Method and apparatus for sorting fibers
US10377061B2 (en) * 2014-03-20 2019-08-13 Shapeways, Inc. Processing of three dimensional printed parts
US10241091B2 (en) 2015-06-04 2019-03-26 Rolls-Royce Corporation Diagnosis of thermal spray gun ignition
US10724999B2 (en) 2015-06-04 2020-07-28 Rolls-Royce Corporation Thermal spray diagnostics
DE102016105094A1 (de) * 2016-03-18 2017-09-21 Cl Schutzrechtsverwaltungs Gmbh Siebeinrichtung zur generativen Herstellung von Bauteilen
US20190358901A1 (en) * 2016-10-05 2019-11-28 The Exone Company Oscillating Gate Powder Recoater for Three-Dimensional Printer
EP3336536B1 (fr) 2016-12-06 2019-10-23 Rolls-Royce Corporation Commande de système basée sur des signaux acoustiques
CA3067022C (fr) * 2017-06-12 2023-04-11 The Exone Company Systeme ameliore de distribution de poudre fine et systeme de collecte de poussiere pour imprimantes tridimensionnelles a couches de poudre et procedes associes
CN108212761B (zh) * 2018-01-17 2021-06-22 宁波爱去欧净水科技股份有限公司 一种活性炭粉末过滤装置
EP3586973B1 (fr) 2018-06-18 2024-02-14 Rolls-Royce Corporation Commande de système basée sur des signaux acoustiques et d'images
CN113351462B (zh) * 2021-06-04 2023-05-05 陕西中涂联涂料科技有限公司 一种粉末涂料加工用高效均质机
CN115849794B (zh) * 2022-12-01 2024-01-26 中建八局第四建设有限公司 一种低成本粗骨料uhpc及其生产设备
CN115837351B (zh) * 2023-02-28 2023-05-02 山西农业大学山西功能食品研究院 一种基于黄花品质的分选装置

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DE919758C (de) 1952-02-27 1954-11-04 Laeis Werke Ag Verfahren und Vorrichtung zum Absieben viskoser Massen
DE2506981B1 (de) 1975-02-19 1976-06-10 Nisshin Seifun K K Siebkasten fuer eine etagensiebvorrichtung
DE8111525U1 (de) 1981-04-16 1981-09-24 IBAG-Vertrieb GmbH, 6730 Neustadt "dichtung mit schleissschutz fuer die seitenbereiche der siebgewebe in siebmaschinen"
DE4340948A1 (de) * 1993-12-01 1995-06-08 Matthias Dipl Ing Coppers Siebvorrichtung
DE19621448C1 (de) 1996-05-29 1997-10-16 Heinrich Scheidt Wurfsieb und Trennverfahren für Kompost
WO1999010111A1 (fr) 1997-08-26 1999-03-04 Herberts Gesellschaft mit beschränkter Haftung Procede et dispositif pour le filtrage par vibration
DE20220680U1 (de) 2002-07-17 2004-02-12 Dr. Hielscher Gmbh Anordnung zum Sieben von pulverförmigen Materialien
JP2005205307A (ja) * 2004-01-22 2005-08-04 Nippon Steel Corp 超音波角形篩装置

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US2223146A (en) 1936-10-07 1940-11-26 William J Cashman Fluid dispensing apparatus
DE919758C (de) 1952-02-27 1954-11-04 Laeis Werke Ag Verfahren und Vorrichtung zum Absieben viskoser Massen
DE2506981B1 (de) 1975-02-19 1976-06-10 Nisshin Seifun K K Siebkasten fuer eine etagensiebvorrichtung
DE8111525U1 (de) 1981-04-16 1981-09-24 IBAG-Vertrieb GmbH, 6730 Neustadt "dichtung mit schleissschutz fuer die seitenbereiche der siebgewebe in siebmaschinen"
DE4340948A1 (de) * 1993-12-01 1995-06-08 Matthias Dipl Ing Coppers Siebvorrichtung
DE19621448C1 (de) 1996-05-29 1997-10-16 Heinrich Scheidt Wurfsieb und Trennverfahren für Kompost
WO1999010111A1 (fr) 1997-08-26 1999-03-04 Herberts Gesellschaft mit beschränkter Haftung Procede et dispositif pour le filtrage par vibration
DE20220680U1 (de) 2002-07-17 2004-02-12 Dr. Hielscher Gmbh Anordnung zum Sieben von pulverförmigen Materialien
JP2005205307A (ja) * 2004-01-22 2005-08-04 Nippon Steel Corp 超音波角形篩装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028613A1 (fr) * 2006-09-05 2008-03-13 Dürr Systems GmbH pompe de transport de poudre pour le transport de poudre de revêtement dans une installation de revêtement par poudre et procédé d'utilisation correspondant
CN109807057A (zh) * 2019-03-19 2019-05-28 焦作天宝桓祥机械科技有限公司 一种多源组合式金刚石微粉选型盘

Also Published As

Publication number Publication date
US7802687B2 (en) 2010-09-28
US20060266284A1 (en) 2006-11-30
DE102005024854B3 (de) 2006-09-14

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