EP2062013A1 - Dispositif de microdosage - Google Patents

Dispositif de microdosage

Info

Publication number
EP2062013A1
EP2062013A1 EP07785110A EP07785110A EP2062013A1 EP 2062013 A1 EP2062013 A1 EP 2062013A1 EP 07785110 A EP07785110 A EP 07785110A EP 07785110 A EP07785110 A EP 07785110A EP 2062013 A1 EP2062013 A1 EP 2062013A1
Authority
EP
European Patent Office
Prior art keywords
weighing
reservoir
microdosing
container
depot
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Withdrawn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
EP07785110A
Other languages
German (de)
English (en)
Inventor
Claude Inauen
Heinz Brand
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.)
Buehler AG
Original Assignee
Buehler 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 Buehler AG filed Critical Buehler AG
Publication of EP2062013A1 publication Critical patent/EP2062013A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/086—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge of the loss-in-weight feeding type
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
    • G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
    • G01G13/022—Material feeding devices
    • G01G13/024—Material feeding devices by gravity

Definitions

  • the invention relates to a microdosing for dosing and weighing of free-flowing and not free-flowing bulk materials, such as flours, powders, additives or fine-grained granules.
  • EP-B-697357 describes a microdosing apparatus in which a dosing scale consists of a weighing container suspended on weighing elements with discharge aids and trays with openings, wherein a product transfer opening is arranged in a bottom directly above the feed area of a dosing screw.
  • a dosing scale consists of a weighing container suspended on weighing elements with discharge aids and trays with openings, wherein a product transfer opening is arranged in a bottom directly above the feed area of a dosing screw.
  • a hollow cone with a through hole is used instead of a stirrer.
  • the intermediate floor should be able to carry a large product column, weighing is accurate.
  • Dosing devices are also known with a vertically arranged conveying element, for example by means of a vertical worm-mounted screw.
  • the aim is to achieve a 100% degree of screw flow and a large adjustment range, in conjunction with a compact design.
  • the arrangement of a stirrer is additionally proposed in GB-A-1601568.
  • the metering unit should be decoupled from the weighing container. This makes the weighing container lighter and improves the relationship between product to be weighed and tare.
  • the invention has for its object to develop a microdosing for dosing and weighing of flowable bulk materials, such as flours, powders or fine granules, which allows both an accurate weighing small amounts of product (batches) and a highly accurate regulation of continuous product streams.
  • Characteristic is a decoupling of depot and balance, which in contrast to the prior art, a significantly simplified design is achieved with higher weighing accuracy. In particular, pressure fluctuations in the weighing container are avoided.
  • a simple, modular design is available, and besides volumetric weighing, it can also be extended to gravimetric weighing.
  • the Mikrodosier is sanitation friendly designed, a Leerfahren with very small residual amounts is possible. Bridge formations and product differences in the depot are avoided. The gross weight of the microdosing device is low. Due to the decoupling, the depot can be refilled automatically.
  • the invention will be described below in an embodiment with reference to a drawing.
  • the drawing shows the microdosing in a sectional view.
  • the depot 2 which is arranged above the weighing container 3 as a storage container, has a bottom trimmer 5 with a drive device 6.
  • the product located in the depot 2 is loosened and discharged through an opening 7 in the bottom of the depot into the weighing container 3.
  • a spatially formed on the wall of the depot 2 and the opening 7 arranged and spatially trained nose 8 deflects the product to be discharged, so that the product pressure is relieved and an uncontrolled refilling of the weighing container 3 is prevented.
  • the constancy of refilling is improved even with bulk density scattering.
  • the Bodenausmaschiner 5 may further be provided with a scraper, not shown.
  • the depot is separated by weighing from the weighing container 3 arranged under this, wherein only in the region of the opening 7 to the weighing container 3, a flexible sleeve 9 is arranged to meet the sanitation requirements and to minimize pressure fluctuations.
  • the sleeve 9 extends at least gap-free to the bottom of the depot 2 and is secured by means of holder against damage.
  • the weighing container 3 is arranged on only one overload-protected measuring cell 11 and has a stirrer 10 with drive unit 12.
  • the weighing container 3 can also be designed as a negative cone to avoid bridging.
  • the discharge screw 4 is designed as a double spiral screw without soul and is also driven by the drive unit 12.
  • a belt overdrive allows a large power range.
  • the depot 2 is much larger than the weighing container 3 and allows the weighing of multiple batches without refilling.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Basic Packing Technique (AREA)
  • Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)

Abstract

L'invention concerne un dispositif de microdosage destiné au dosage et au pesage de produits en vrac à écoulement libre, tels que par exemple des farines, des poudres ou du granulat fin. Pour obtenir un pesage sans défauts, même dans le cas de lots de petite taille, un contenant de pesage (3) du dispositif de pesage est disposé de façon techniquement séparée d'un contenant de stockage de produit à peser.
EP07785110A 2006-09-01 2007-08-23 Dispositif de microdosage Withdrawn EP2062013A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006041298A DE102006041298A1 (de) 2006-09-01 2006-09-01 Mikrodosiereinrichtung
PCT/CH2007/000420 WO2008025181A1 (fr) 2006-09-01 2007-08-23 Dispositif de microdosage

Publications (1)

Publication Number Publication Date
EP2062013A1 true EP2062013A1 (fr) 2009-05-27

Family

ID=38596823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07785110A Withdrawn EP2062013A1 (fr) 2006-09-01 2007-08-23 Dispositif de microdosage

Country Status (5)

Country Link
US (1) US8367946B2 (fr)
EP (1) EP2062013A1 (fr)
KR (1) KR20090063226A (fr)
DE (1) DE102006041298A1 (fr)
WO (1) WO2008025181A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017093570A1 (fr) 2015-12-03 2017-06-08 Power Minerals Limited Procédé pour la fabrication de granulés et d'agglomérats à partir de poudres

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4895412B1 (ja) * 2011-07-05 2012-03-14 株式会社プラスワンテクノ 多品種秤量装置および多品種秤量装置システム構成
US9829295B2 (en) * 2016-01-29 2017-11-28 Jimmie Christopher Todd Ammunition reloading system
EP3667263A1 (fr) * 2016-07-27 2020-06-17 Bühler AG Dispositif de dosage et de pesée et procédé de détermination du poids d'un produit dans un dispositif de dosage et de pesée

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319828A (en) * 1964-10-28 1967-05-16 Colgate Palmolive Co Weight rate control
GB1601568A (en) 1978-05-25 1981-10-28 Ward J A Material feed device and plastics recovery installation including such device
US4491243A (en) * 1981-01-28 1985-01-01 Yoshikazu Koga Apparatus for directly and continuously weighing continuously fed powder or particle substances
JPS6118642A (ja) 1984-07-04 1986-01-27 Kubota Ltd 粉粒体供給装置
DE3617200A1 (de) 1986-05-22 1987-11-26 Inoex Gmbh Waage fuer die massendurchsatzerfassung im einlauf eines extruders
US5527107A (en) 1990-02-02 1996-06-18 Buehler Ag Plant for continuous mixing and homgenization
DE9014491U1 (de) 1990-10-19 1991-04-18 Verwaltungs Lohse GmbH & Co KG, 7920 Heidenheim Stofflöser, insbesondere zum Auflösen von Biomasse
DE4312281A1 (de) * 1993-04-15 1994-10-20 Eirich Maschf Gustav Verfahren und Vorrichtung zur gravimetrischen Dosierung und Vermischung mindestens zweier Komponenten
US5423455A (en) * 1993-06-25 1995-06-13 Acrison, Inc. Materials feeding system with level sensing probe and method for automatic bulk density determination
DE4332030A1 (de) * 1993-09-21 1995-03-23 Pfister Gmbh Verfahren und Vorrichtung zum gravimetrischen Dosieren von Schüttgütern
US5405049A (en) * 1993-10-27 1995-04-11 Acrison, Inc. Isolation pad for a feeding system and a method for feeding material from the system
CH687869A5 (de) 1994-08-15 1997-03-14 Buehler Ag Geb Mikrodosiergeraet.
US6196417B1 (en) * 1995-04-04 2001-03-06 Paul S. Johnson Method and apparatus for improved regulation of flow of particulate matter
DE19820709C2 (de) * 1997-05-11 2003-04-24 Bolder Automation Gmbh Verfahren und Vorrichtung zur meßtechnischen Ermittlung des Materialdurchsatzes einer Dosiereinheit, Extrudereinheit o. dgl.
DE10153425A1 (de) * 2001-11-03 2003-05-15 Pfister Gmbh Verfahren und Vorrichtung zum gravimetrischen Dosieren von Schüttgut
US6722294B2 (en) * 2002-08-06 2004-04-20 Vitro Global, S.A. Method and apparatus for feeding a pulverized material
FR2846632B1 (fr) 2002-10-31 2006-02-10 Mettler Toledo Flexilab Sas Appareil pour le dosage de precision de poudre

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008025181A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017093570A1 (fr) 2015-12-03 2017-06-08 Power Minerals Limited Procédé pour la fabrication de granulés et d'agglomérats à partir de poudres

Also Published As

Publication number Publication date
WO2008025181A1 (fr) 2008-03-06
KR20090063226A (ko) 2009-06-17
US8367946B2 (en) 2013-02-05
US20100089667A1 (en) 2010-04-15
DE102006041298A1 (de) 2008-03-20

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