EP2062013A1 - Micrometering device - Google Patents

Micrometering device

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Withdrawn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)
French (fr)
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/en
Withdrawn legal-status Critical Current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

The invention relates to a micrometering device for metering and weighing free-flowing bulk materials, such as, for example, flour, powder or fine-grain granules. According to the invention, a reliable weighing with small batch sizes may be achieved, by arranging a weighing container (3) for the weighing device separate from a reservoir for the product for weighing.

Description

Mikrodosiereinrichtung microdosing
Die Erfindung betrifft eine Mikrodosiereinrichtung zur Dosierung und Verwiegung von freifliessenden und nicht freifliessenden Schüttgütern, wie zum Beispiel Mehle, Pulver, Additive oder feinkörniges Granulat.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.
Einrichtungen zur Mikrodosierung von sind bekannt. So beschreibt die EP-B-697357 ein Mikrodosiergerät, bei dem eine Dosierwaage aus einem, an Wägeelementen aufgehängten Wägebehälter mit Austraghilfen und Böden mit Öffnungen besteht, wobei eine Produktübergabeöffnung in einem Boden direkt über dem Einzugsbereich einer Dosierschnecke angeordnet ist. Bei einem ähnlichen Rührwerk mit integriertem Zwischenboden gemäss JP-A-6118642 wird anstelle eines Rührers ein Hohlkegel mit einer Durchw lassöffnung verwendet. Der Zwischenboden soll eine grosse Produktsäule tragen können, das Verwiegen ist genau.Microdosing devices are known. For example, 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. In a similar agitator with integrated false bottom according to JP-A-6118642, instead of a stirrer, a hollow cone with a through hole is used. The intermediate floor should be able to carry a large product column, weighing is accurate.
Bekannt sind weiterhin Dosiereinrichtungen mit einem vertikal angeordneten Förderelement, zum Beispiel mittels drehtellermontierter Vertikalschnecke. Erreicht werden sollen hierbei ein 100%iger Schneckenfü!lungsgrad und ein grosser Verstellbereich, in Verbindung mit einer kompakten Bauweise. Um auch schlecht fliessende Produkte fördern zu können, wird in der GB-A-1601568 zusätzlich die Anordnung eines Rührers vorgeschlagen.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. In order to promote poorly flowing products, the arrangement of a stirrer is additionally proposed in GB-A-1601568.
Generell kann es bei vertikaler Anordnung zu einem "Durchschiessen" von Produkt kommen.In general, it can come with a vertical arrangement to a "shoot through" of product.
Bei einem Dosiermodul gemäss DE-A-3617200 soll die Dosiereinheit vom Wägebehälter entkoppelt werden. Dadurch wird der Wägebehälter leichter und das Verhältnis zwischen zu verwiegendem Produkt und Tara wird verbessert. Der Erfindung liegt die Aufgabe zugrunde, eine Mikrodosiereinrichtung zur Dosierung und Verwiegung von fliessfähigen Schüttgütern, wie zum Beispiel Mehle, Pulver oder feinkörniges Granulat zu entwickeln, die sowohl ein genaues Verwiegen kleiner Produktmengen (Batches) als auch ein hochgenaues Regulieren von kontinuierlichen Produktströmen ermöglicht.In a metering module according to DE-A-3617200, 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.
Die Aufgabe ist mit den Merkmalen des Patentanspruchs 1 gelöst. Kennzeichnend ist eine Entkopplung von Depot und Waage, wobei im Gegensatz zum Stand der Technik ein wesentlich vereinfachter Aufbau bei höherer Wägegenauigkeit erreicht wird. Insbesondere werden Druckschwankungen im Wägebehälter vermieden.The object is solved with the features of claim 1. 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.
Bevorzugte Ausführungsformen sind in Unteransprüchen offenbart.Preferred embodiments are disclosed in subclaims.
Erreichbar ist ein einfacher, modularer Aufbau und es kann neben volumetrischer Verwiegung auch auf eine gravimetrische Verwiegung erweitert werden.A simple, modular design is available, and besides volumetric weighing, it can also be extended to gravimetric weighing.
Die Mikrodosiereinrichtung ist sanitationsfreundlich gestaltet, ein Leerfahren mit sehr kleinen Restmengen ist möglich. Brückenbildungen und Produktunterschiede im Depot werden vermieden. Das Bruttogewicht der Mikrodosiereinrichtung ist gering. Durch die Entkopplung kann das Depot automatisch nachbefüllt werden.The Mikrodosiereinrichtung 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.
Die Erfindung wird nachfolgend in einem Ausführungsbeispiel anhand einer Zeichnung näher beschrieben. Die Zeichnung zeigt die Mikrodosiereinrichtung in einer Schnittdarstellung.The invention will be described below in an embodiment with reference to a drawing. The drawing shows the microdosing in a sectional view.
Depot 1 , Wägebehälter 3 und Austragsschnecke 4 sowie übrige Bauelemente der Mikrodosiereinrichtung sind in einem Gestell 1 aufgenommen.Depot 1, weighing container 3 and discharge screw 4 and other components of the microdosing are accommodated in a frame 1.
Das oberhalb des Wägebehälters 3 als Vorratsbehälter angeordnete Depot 2 weist einen Bodenausräumer 5 mit Antriebseinrichtung 6 auf. Das im Depot 2 befindliche Produkt wird so aufgelockert und durch eine Öffnung 7 im Boden des Depots in den Wägebehälter 3 ausgetragen. Eine an der Wand des Depots 2 und die Öffnung 7 abdeckend angeordnete und räumlich ausgebildete Nase 8 lenkt das auszutragende Produkt um, so dass der Produktdruck entlastet wird und ein unkontrolliertes Nachbefüllen des Wägebehälters 3 verhindert wird. Zudem wird die Konstanz der Nachbefüllung auch bei Schüttdichtestreuungen verbessert. Der Bodenausräumer 5 kann weiterhin mit einem nicht dargestellten Abstreifer versehen sein.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. In addition, the constancy of refilling is improved even with bulk density scattering. The Bodenausräumer 5 may further be provided with a scraper, not shown.
Das Depot ist vom unter diesem angeordneten Wägebehälter 3 wägetechnisch getrennt, wobei lediglich im Bereich der Öffnung 7 zum Wägebehälter 3 eine flexible Manschette 9 angeordnet ist um den Sanitationsanforderungen zu genügen und um Druckschwankungen zu minimieren. Die Manschette 9 erstreckt sich zumindest spaltfrei bis zum Boden des Depots 2 und ist mittels Halterung gegen Beschädigung gesichert.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.
Der Wägebehälter 3 ist auf nur einer überlastgesicherten Messzelle 11 angeordnet und verfügt über einen Rührer 10 mit Antriebseinheit 12.The weighing container 3 is arranged on only one overload-protected measuring cell 11 and has a stirrer 10 with drive unit 12.
Der Wägebehälter 3 kann auch als Negativkonus gestaltet sein um Brückenbildungen zu vermeiden.The weighing container 3 can also be designed as a negative cone to avoid bridging.
Die Austragsschnecke 4 ist als Doppelspiralschnecke ohne Seele ausgebildet und wird ebenfalls von der Antriebseinheit 12 angetrieben. Ein Riemenübertrieb ermöglicht einen grossen Leistungsbereich.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.
Das Depot 2 ist wesentlich grösser als der Wägebehälter 3 und ermöglicht das Verwiegen mehrerer Batches ohne Nachbefüllung. The depot 2 is much larger than the weighing container 3 and allows the weighing of multiple batches without refilling.
Bezugszeichenreference numeral
Gestell Depot Wägebehälter Austragsschnecke Bodenausräumer Antriebseinrichtung Öffnung Nase Manschette Rührer Messzelle Antriebseinheit Rack Depot Weighing hopper Discharge screw Floor scraper Drive device Opening Nose Cuff Stirrer Measuring cell Drive unit

Claims

Patentansprüche claims
1. Mikrodosiereinrichtung mit einem Vorratsbehälter (Depot) für zu verwiegendes Produkt und einer, diesem nachgeordneten Wägeeinrichtung mit einer Austragseinrichtung, dadurch gekennzeichnet, dass Vorratsbehälter und ein Wägebehälter (3) der Wägeeinrichtung wägetechnisch getrennt voneinander angeordnet sind.1. microdosing with a reservoir (Depot) for to be weighed product and this, this downstream weighing device with a discharge device, characterized in that storage container and a weighing container (3) of the weighing device are arranged weighing technology separated from each other.
2. Mikrodosiereinrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Vorratsbehälter eine Bodenöffnung über dem Wägebehälter (3) und einen Bodenausräumer aufweist.2. microdosing according to claim 1, characterized in that the reservoir has a bottom opening above the weighing container (3) and a Bodenausräumer.
3. Mikrodosiereinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Vorratsbehälter ein weiteres Element zur Produktumlenkung angeordnet ist.3. microdosing according to claim 1 or 2, characterized in that in the reservoir, a further element for product deflection is arranged.
4. Mikrodosiereinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Wägebehälter (3) im Bereich der Bodenöffnung des Vorratsbehälters mit einer flexiblen Manschette (9) versehen ist, die sich spaltfrei bis zum Boden des Vorratsbehälters erstreckt. 4. microdosing according to one of claims 1 to 3, characterized in that the weighing container (3) in the region of the bottom opening of the reservoir with a flexible sleeve (9) is provided, which extends without a gap to the bottom of the reservoir.
EP07785110A 2006-09-01 2007-08-23 Micrometering device Withdrawn EP2062013A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006041298A DE102006041298A1 (en) 2006-09-01 2006-09-01 microdosing
PCT/CH2007/000420 WO2008025181A1 (en) 2006-09-01 2007-08-23 Micrometering device

Publications (1)

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

Family

ID=38596823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07785110A Withdrawn EP2062013A1 (en) 2006-09-01 2007-08-23 Micrometering device

Country Status (5)

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

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WO2017093570A1 (en) 2015-12-03 2017-06-08 Power Minerals Limited Process for making granules and agglomerates from powders

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JP4895412B1 (en) * 2011-07-05 2012-03-14 株式会社プラスワンテクノ Multi-product weighing device and multi-product weighing device system configuration
US9829295B2 (en) * 2016-01-29 2017-11-28 Jimmie Christopher Todd Ammunition reloading system
EP3491347B1 (en) * 2016-07-27 2020-02-12 Bühler AG Dosing and weighing device and method for determining the weight of a product in a dosing and weighing device

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Publication number Priority date Publication date Assignee Title
WO2017093570A1 (en) 2015-12-03 2017-06-08 Power Minerals Limited Process for making granules and agglomerates from powders

Also Published As

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

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