EP1809426A1 - Device for separating granular material - Google Patents

Device for separating granular material

Info

Publication number
EP1809426A1
EP1809426A1 EP05775622A EP05775622A EP1809426A1 EP 1809426 A1 EP1809426 A1 EP 1809426A1 EP 05775622 A EP05775622 A EP 05775622A EP 05775622 A EP05775622 A EP 05775622A EP 1809426 A1 EP1809426 A1 EP 1809426A1
Authority
EP
European Patent Office
Prior art keywords
product
sieve
granular material
light
separating
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Withdrawn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
EP05775622A
Other languages
German (de)
French (fr)
Inventor
Erika Eisenhut
Marcel Linder
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 EP1809426A1 publication Critical patent/EP1809426A1/en
Withdrawn legal-status Critical Current

Links

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
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4636—Regulation of screen apertures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B4/00—Separating by pneumatic tables or by pneumatic jigs
    • B03B4/02—Separating by pneumatic tables or by pneumatic jigs using swinging or shaking tables
    • 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
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/08—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to weight
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • 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
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Sorting Of Articles (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

The invention relates to a device for separating granular material, especially a light grain selector for cereal crops or similar, comprising a sieve cage with at least two sieve layers that are provided with perforated plates. The sieve layers can be penetrated by air from below. The sieve cage is equipped with at least one oscillating drive unit while each sieve layer (2 to 5) encompasses a final separation zone.

Description

Vorrichtung zum Trennen von körnigem Gut Device for separating granular material
Die Erfindung betrifft eine Vorrichtung zum Trennen von körnigem Gut, besonders einen Leichtkornausleser, insbesondere zur Trennung von leichteren Bestandteilen von Ge¬ mischen aus Korngut.The invention relates to a device for separating granular material, in particular a light grain reader, in particular for the separation of lighter components of Ge mix from Korngut.
Maschinen oder Separatoren zum Trennen und/oder Reinigen von Korngutgemischen sind bekannt. So gibt es Steinausleser oder Maschinen zum Abtrennen von schweren oder leichten Fraktionen.Machines or separators for separating and / or cleaning Korngutgemischen are known. There are stone extractors or machines for separating heavy or light fractions.
Sie werden sowohl in der Vorreinigung im Silo als auch zur Getreidereinigung einge¬ setzt. Die Trennung der Fraktionen erfolgt mittels Vibration und Durchströmung mittels Luft.They are used both in the pre-cleaning in the silo and for grain cleaning. The separation of the fractions by means of vibration and flow through air.
Ursprünglich hatte jede Reinigungsmaschine spezifische Funktionen was eine Vielzahl an Einzelmaschinen bewirkte. Daher wurden Maschinen entwickelt, die zwei oder drei Arbeitsgänge kombinieren. So beschreibt die WO 85/05049 eine Maschine, die Stei¬ nausleser und Konzentrator ist. Der eingesetzte Luftstrom wird sowohl zur Steinauslese als auch zur Trennung von Schwer- und Leichtprodukt verwendet. Die Luft durchströmt von unten ein Lochblech und das darauf befindliche Getreide und bewirkt eine Schich¬ tung nach dem spezifischen Gewicht, das leichte Gut schwimmt dabei obenauf. In einer zweiten Siebhälfte kann das Produkt durch die Löcher des Lochbleches gelangen. Die¬ ses Schwerprodukt gelangt auf den Steinausleser. Um eine für die Auslese minimale Produktschicht zu erhalten wird dabei in Richtung Auslauf die Breite des Siebbleches in der Durchfallzone reduziert. Das leichte Produkt gelangt in den Auslauf.Originally, each cleaning machine had specific functions which caused a large number of individual machines. Therefore, machines have been developed that combine two or three operations. Thus, WO 85/05049 describes a machine which is a stone reader and concentrator. The air flow used is used both for stone selection and for the separation of heavy and light products. The air flows through from below a perforated plate and the grain located thereon and causes a Schich¬ tion according to the specific weight, the light material floats on top. In a second half of the sieve, the product can pass through the holes of the perforated plate. This heavy product reaches the stone reader. In order to obtain a minimum product layer for the selection, the width of the screen plate in the diarrhea zone is reduced in the direction of the outlet. The light product gets into the spout.
Eine weitere kombinierte Maschine ist in der WO 88/04204 beschrieben, bei der im obe¬ ren Bereich drei Sieblagen angeordnet sind. Somit können im obersten Sieb grobe Ver¬ unreinigungen abgestossen werden, während auf den darunterliegenden Sieben der Feinbesatz, zum Beispiel Sand entfernt wird. Das Getreide gelangt anschliessend auf ein viertes Sieb, wo es von einem Luftstrom durchströmt wird und eine Trennung in Leicht- und Schwerprodukt erfolgt. Das mit Besatz versehene Schwerprodukt gelangt auf die unterste Siebebene, wo der Besatz wie Steine oder Glas ausgelesen wird. Das Leichtprodukt gelangt in einen Aspirationskanal, um den Leichtbesatz abzutrennen.Another combined machine is described in WO 88/04204, in which three sieve layers are arranged in the upper area. Thus, coarse impurities can be rejected in the uppermost sieve, while on the sieves below the fine sediment, for example sand, is removed. The grain then arrives a fourth sieve, where it is flowed through by a stream of air and a separation into light and heavy product takes place. The stocked heavy product reaches the bottom level of the screen, where the stock is read out like stones or glass. The light product enters an aspiration channel to separate the light stocking.
Bei diesen Maschinen ist es auch bekannt, die verwendete Luft zu Rezyklieren, um den Frischluftbedarf gering zu halten.In these machines, it is also known to recycle the air used in order to keep the fresh air requirement low.
Der Erfindung liegt nun die Aufgabe zugrunde, eine Vorrichtung zum Trennen von kör¬ nigem Gut zu entwickeln, die es insbesondere ermöglicht, die Abtrennung von Produkt und Besatz, der leichter ist als ein normales Getreidekorn zu verbessern. Insbesondere sollen damit auch mykotoxinhaltige oder ähnlich befallene Leichtkörner oder derglei¬ chen sicher abgeschieden werden. Die Aufgabe ist mit den Merkmalen des Patentan¬ spruchs gelöst. Vorteilhafte Ausführungen sind in den Unteransprüchen offenbart.The invention is based on the object to develop a device for separating kör¬ nigem Good, which in particular makes it possible to improve the separation of product and stock, which is easier than a normal grain. In particular, mycotoxin-containing or similarly affected light grains or derglei¬ chen should be deposited safely. The object is achieved with the features of the patent claim. Advantageous embodiments are disclosed in the subclaims.
In Verbindung mit einer neu gefundenen Art der Luftführung und Verstellung in der End¬ trennzone ist über jeder Sieblage eine Endtrennung zwischen Schwer- und Leichtpro¬ dukt auf Siebdecks bzw. Siebblechen möglich. Auf den Siebdecks läuft das schwere Produkt nach oben und das leichtere Produkt nach unten. Durch die Schichtung schwimmt das leichtere Produkt auf dem schwereren und eine Endtrennzone sorgt da¬ für, dass das leichtere Produkt nicht in den Auslauf für das Gutprodukt gelangen kann. Durch den zusätzlichen Gegenluftstrom, der von unten das Produkt durchströmt, wird das Leichtprodukt nach unten geblasen.In connection with a newly found type of air guidance and adjustment in the End¬ separating zone over each Sieblage an end separation between heavy and Leichtpro¬ product on screen decks or screen plates possible. On the screen decks, the heavy product goes up and the lighter product goes down. Due to the stratification, the lighter product floats on the heavier one and an end separation zone ensures that the lighter product can not get into the outlet for the good product. Due to the additional counter air flow, which flows through the product from below, the light product is blown down.
Das Siebblech der untersten Sieblage ist verstellbar, insbesondere verschiebbar und kippbar (unabhängig vom übrigen Siebkasten, d.h. unabhängig von den oberen, bevor¬ zugt 3 Sieblagen), so dass ein gleichmässiger Luftstrom ohne Verwirbelung gegeben ist und eine Aufteilung in Leichtprodukt und Abstoss wird erreicht. Die Endtrennvorrichtun¬ gen sind fest angeordnet. Ein Teil des Luftstroms wird zur Dosierung des Gegenstroms direkt durch das Produkt geführt, was zudem eine Feineinstellung der Endtrennzone ermöglicht. Die Grobeinstellung des Luftstroms erfolgt bevorzugt durch eine Änderung der Loch- oder Schlitzgrösse des Siebbleches in der Endtrennvorrichtung. Die Auslesegüte wird somit deutlich verbessert und vereinfacht.The screen plate of the lowermost Sieblage is adjustable, in particular displaceable and tiltable (regardless of the other sieve box, ie regardless of the upper, vor¬ tively 3 Sieblagen), so that a uniform air flow is given without turbulence and a division into light product and repulsion is achieved. The Endtrennvorrichtun¬ conditions are fixed. Part of the air flow is fed directly through the product to meter the countercurrent, which also allows for fine adjustment of the final separation zone. The coarse adjustment of the air flow is preferably carried out by changing the hole or slot size of the screen plate in the end separation device. The read quality is thus significantly improved and simplified.
In einem Ausführungsbeispiel wird die Erfindung nachfolgend anhand einer Zeichnung näher beschrieben. In der Zeichnung zeigen dieIn one embodiment, the invention will be described below with reference to a drawing. In the drawing show the
Fig. 1: eine Seitenansicht eines Leichtkomauslesers Fig. 2: ein Siebblech einer Endtrennzone in Draufsicht.Fig. 1: a side view of a light commutator Fig. 2: a screen plate of a Endtrennzone in plan view.
Die Vorrichtung, ein Leichtkornausleser weist einen Einlauf 1 des Siebkastens 5 für das körnige Gut bzw. Rohprodukt auf, wobei der Zulauf mittels eines nicht dargestellten Schiebers regelbar ist.The device, a light grain reader has an inlet 1 of the sieve box 5 for the granular material or crude product, wherein the inlet is controllable by means of a slide, not shown.
Unter dem Einlauf 1 ist ein Produktteiler 7 angeordnet, der das einlaufende Rohprodukt, bevorzugt gleichmässig mittels der Rückführbleche 22 resp. 8 auf die beiden oberen Sieblagen 2, 3 verteilt. Weitere solche Rückführbleche 8, 9 und 10 sind auch vor bzw. über den Sieblagen 2, 4, 5 angeordnet.Below the inlet 1, a product divider 7 is arranged, which is the incoming raw product, preferably uniformly by means of the return plates 22, respectively. 8 on the two upper Sieblagen 2, 3 distributed. Further such return plates 8, 9 and 10 are also arranged in front of or above the screen layers 2, 4, 5.
Am oberen Ende der schräg angeordneten Siebblagen 2, 3, 4, 5 sind Endtrennzonen resp. Endtrennvorrichtungen 11 , 12, 13, 14 angeordnet, die jeweils einen Abweiser 15 für aufschwimmendes, leichtes Produkt und ein verstellbares Lochblech 16 aufweisen, wobei die Schlitzlöcher 17 mittels einer Einstellvorrichtung 18 in ihrer offenen Fläche veränderlich sind. Hierzu wird ein Gegenblech parallel zum Lochblech 16 verschoben. Der Gegen.luftstrom ist somit regulierbar. Das jeweils schwerere Produkt sinkt auf den Sieblagen nach unten auf das jeweilige Siebblech und wird durch die Schwingbewe¬ gung des nicht bezeichneten Vibrationsantriebes zum oberen Ende mit den Endtrenn- vorrichtungen 11-14 gefördert.At the upper end of the obliquely arranged Siebblagen 2, 3, 4, 5 are Endtrennzonen resp. End separators 11, 12, 13, 14 are arranged, each having a deflector 15 for floating, lightweight product and an adjustable perforated plate 16, wherein the slot holes 17 are variable by means of a setting device 18 in its open area. For this purpose, a counter-plate is moved parallel to the perforated plate 16. The counter airflow is thus adjustable. The heavier product sinks down onto the sieve sheets on the sieve sheets and is conveyed to the upper end by means of the oscillatory movement of the unspecified vibratory drive with the end separating devices 11-14.
Durch die Siebbleche der Sieblagen 2-5 fällt kein Produkt. Durch den Gegenluftstrom, der von unten die Sieblagen 2-5 durchdringt, wird das jeweils leichtere Produkt nach unten geblasen. Das schwerere Produkt wird nach der jeweiligen Endtrennvorrichtung 11-14 über nicht bezeichnete Ausläufe abgestossen, so ein Schwerprodukt nach den Endtrennvorrichtungen 11 und 12 und ein Mischprodukt nach der Endtrennvorrichtung 13. Nach der Endtrennvorrichtung 14 gelangt ein entsprechend leichtes Produkt in ei¬ nen Auslauf 19.Through the sieve plates of Sieblagen 2-5 no product falls. Due to the counterflow of air, which penetrates from below Sieblagen 2-5, the lighter product is blown down. The heavier product is discharged after the respective Endtrennvorrichtung 11-14 on not designated outlets, so a heavy product after the Endtrennvorrichtungen 11 and 12 and a mixed product after the Endtrennvorrichtung 13. After the end separating device 14, a correspondingly light product passes into an outlet 19.
Das leichtere Produkt der beiden oberen Sieblagen 11 und 12 gelangt als Mischprodukt über den Produktteiler 9 zur Nachlese auf die Sieblage 4 und das dort gebildete Leicht¬ produkt gelangt zur Nachlese über den Produktteiler 10 auf die unterste Sieblage 5. Der leichte Abfall gelangt in den Auslauf 20. Auf der untersten Sieblage 5 verhindert die Endtrennvorrichtung 14 den Austritt des Abfalls mit dem leichteren Produkt durch den Auslauf 19The lighter product of the two upper sieve layers 11 and 12 reaches the sieve layer 4 as a mixed product via the product divider 9 for read-through, and the light product formed there reaches the bottom sieve layer 5 via the product divider 10 for easy reading. The slight waste reaches the exit 20. On the lowermost wire tray 5, the end separator 14 prevents leakage of the waste with the lighter product through the spout 19
Die Neigung der untersten Sieblage 5 ist mittels einer Verstellung 21 einstellbar, um die Produkttrennung beeinflussen zu- können. The inclination of the lowermost sieve layer 5 can be adjusted by means of an adjustment 21 in order to be able to influence the product separation.
Bezugszeichenreference numeral
Einlaufenema
Sieblagescreen layer
Sieblagescreen layer
Sieblagescreen layer
Sieblagescreen layer
Siebkastenscreenbox
Produktteilerproduct divider
RückführblechFeedback sheet
RückführblechFeedback sheet
RückführblechFeedback sheet
Endtrennvorrichtungend separating device
Endtrennvorrichtungend separating device
Endtrennvorrichtungend separating device
Endtrennvorrichtungend separating device
Abweiserdeflector
Siebblechscreen plate
Schlitzlochslotted hole
Einstellvorrichtungadjustment
Auslaufoutlet
Auslaufoutlet
Verstellungadjustment
Rückführblech Feedback sheet

Claims

Patentansprüche claims
1. Vorrichtung zum Trennen von körnigem Gut, insbesondere ein Leichtkornausleser, der einen Siebkasten mit mindestens zwei Sieblagen mit Siebblechen aufweist, wobei die Sieblagen von unten mit Luft durchströmbar sind und der Siebkasten mit mindestens einem Schwingantrieb versehen ist, dadurch gekennzeichnet, dass jede Sieblage (2-5) eine Endtrennzone resp. Endtrennvorrichtung (11-14) auf¬ weist.1. An apparatus for separating granular material, in particular a light grain reader, which has a sieve box with at least two Sieblagen with screen plates, wherein the Sieblagen from below are flowed through with air and the sieve box is provided with at least one oscillating drive, characterized in that each Sieblage ( 2-5) an Endtrennzone resp. End separating device (11-14) auf¬ has.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass Siebbleche (16) der Endtrennvorrichtungen (11-14) mit in ihrer Grosse veränderlichen Öffnungen ver¬ sehen sind.2. Apparatus according to claim 1, characterized in that screen plates (16) of the end separating devices (11-14) are seen ver¬ with variable in size openings.
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Neigung der untersten Sieblage (5) variierbar ist. 3. Apparatus according to claim 1 or 2, characterized in that the inclination of the lowermost Sieblage (5) is variable.
EP05775622A 2004-11-09 2005-09-08 Device for separating granular material Withdrawn EP1809426A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004054275A DE102004054275A1 (en) 2004-11-09 2004-11-09 Device for separating granular material
PCT/CH2005/000535 WO2006050619A1 (en) 2004-11-09 2005-09-08 Device for separating granular material

Publications (1)

Publication Number Publication Date
EP1809426A1 true EP1809426A1 (en) 2007-07-25

Family

ID=35229869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05775622A Withdrawn EP1809426A1 (en) 2004-11-09 2005-09-08 Device for separating granular material

Country Status (11)

Country Link
US (1) US20080087581A1 (en)
EP (1) EP1809426A1 (en)
CN (1) CN101056717B (en)
AR (1) AR052647A1 (en)
AU (1) AU2005304240A1 (en)
BR (1) BRPI0517626A (en)
DE (1) DE102004054275A1 (en)
MX (1) MX2007005063A (en)
TW (1) TW200624184A (en)
WO (1) WO2006050619A1 (en)
ZA (1) ZA200703025B (en)

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CN101056717B (en) 2012-07-04
WO2006050619A1 (en) 2006-05-18
CN101056717A (en) 2007-10-17
ZA200703025B (en) 2008-04-30
US20080087581A1 (en) 2008-04-17
AU2005304240A1 (en) 2006-05-18
BRPI0517626A (en) 2008-10-14
DE102004054275A1 (en) 2006-05-11
TW200624184A (en) 2006-07-16
AR052647A1 (en) 2007-03-28

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