EP1038583B1 - Verfahren und Vorrichtung zur Trennung eines Bruchgutes - Google Patents
Verfahren und Vorrichtung zur Trennung eines Bruchgutes Download PDFInfo
- Publication number
- EP1038583B1 EP1038583B1 EP00100992A EP00100992A EP1038583B1 EP 1038583 B1 EP1038583 B1 EP 1038583B1 EP 00100992 A EP00100992 A EP 00100992A EP 00100992 A EP00100992 A EP 00100992A EP 1038583 B1 EP1038583 B1 EP 1038583B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- broken
- shells
- vibratory
- beans
- good
- 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
Links
Images
Classifications
-
- 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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
- B03C7/02—Separators
- B03C7/04—Separators with material carriers in the form of trays, troughs, or tables
Definitions
- the invention relates to a method and a device for separating broken material, consisting of broken grains or beans and their husks, especially for separation of cocoa breakage (nibs) from the cocoa bean shells, by means of electrostatic forces, according to the preamble of claim 1. Furthermore, the invention relates to a device for Implementation of this method, according to the preamble of claim 4.
- Cocoa beans depending on the type of pretreatment from a roasting, sterilization ons or pre-drying system are usually in a reflection breaker Broken.
- the accuracy of separation must be as large as possible, since it is the quality of the finished product Cocoa mass is decisively influenced.
- Maximum are according to the applicable regulations 2% shells allowed in the nibs. Furthermore, the lowest possible proportion of shells The service life of the downstream grinding plants in the nibs has been considerably improved.
- the broken material 5 is raw or dried in fractional form dried and steamed or roasted or roasted and steamed in one Input hopper 4 entered, the output end in a vibrating or vibrating trough 6th which flows with differently charged, a homogeneous electric field generating electrodes 7, 8 is provided, between which the broken material to be separated is conveyed through in order to be electrostatically charged. Feed hopper 4 and vibration channel 6 together with the electrodes 7, 8 form the charging zone 1 of the Separator.
- the vibration channel 6 is equipped with a vibration drive, not shown, the can be set so that a desired breakage conveyor speed is reached is, by the fact that the feed hopper 4 is adjustable in height, the Flow rate of the vibrating trough can also be influenced.
- the vibrating trough is completely electrically insulated from the outside. Your wall is made of plastic material, in which the electrodes 7, 8 are embedded and is lined with metal.
- the Inner wall of the vibrating trough is also with contours in the form of bump-like Formations provided that the mixing of the fragments passing over them 5 serve as well as the optimization of the particles with the help of the electrodes transferring electrical charge. To optimize this transmission, the Aiming for a single-grain layer on the vibrating channel floor.
- the bottom electrode 7 is at a DC voltage (U +) of about 20-40 kV and represents the anode, while the second metal electrode 8 located directly above it is grounded cathode and supports the charge transfer to the fragments 5.
- the Debris particles namely the nibs and shells
- the Charge sits essentially on the surface of these particles, the transferred one
- the amount of charge is therefore proportional to the size of the particle surface.
- the rate at which charging occurs depends on the electrical conductivity of the material, which is approximately the same size for the shells and nibs.
- the charging zone 1 corresponds to the size of the particles to transfer charge because of the size of the electrical charge of the particles for the subsequent separation in the one following the charging zone 1
- Deflection zone 2 is crucial.
- the two electrodes 7 and 8 of the deflection zone 2 have an insulating layer coated, otherwise the charged fragments come into contact with the electrodes Charging takes place and the particles go back and forth between the electrodes would jump out.
- the broken material becomes thereby after it has been loaded separated that the cocoa bean shells as lighter fragments from the Cocoa Core Fracture (Nibs) as heavier core fragments by suction of the former and Separation of the lighter particles can be separated in an air classifier.
- a suction device 25 consisting of a hood 24 and a suction pipe 26 connected to it, which is connected to a cyclone 20 trained air classifier 27 is connected, which in turn via an exhaust pipe 21st is connected to a suction fan 28.
- the exhaust pipe 21 opens into the cyclone 20 the conical inner wall of the cocoa bean pods 16 collect in one drop container 24a disposed at the lower end of the cyclone.
- the one from the Exhaust pipe 21 by means of the suction fan 28 driven by a motor 22 extracted air is discharged into the open as exhaust air 23.
- the lighter fragments i.e. the cocoa bean husks 16
- the electrode 8 In the electrical charging of the broken material between the electrodes 7 and 8 of the Lifting heavier core fragments (nibs), as shown, they get to the electrode 8, are discharged there and enter the hood 24 through the perforated plate Suction device 25 and thus from the delivery area of the vibrating trough 6, so that this at its end 29 only sheds the cocoa kernel fragments 15, which in a Conveyor system 13 arrive, which transports them away.
- the inventive method shows that the separation of nibs and shells with the help an electrostatic separation device is possible, the forces occurring in electric field of sufficient size and the differences of nibs and shells are sufficient to separate these two fragments.
- the necessary voltages are in the range of 40 kV to 50 kV.
Landscapes
- Electrostatic Separation (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Sorting Of Articles (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Confectionery (AREA)
Description
Claims (4)
- Verfahren zur elektrostatischen Trennung eines Bruchgutes (5), bestehend aus Kakaokernbruch (Nibs) und Kakaobohnenschalen, wobei das Bruchgut in fraktionierter Form in einer Aufladungszone (1) zwischen zwei unterschiedlich geladenen Elektroden(7, 8) elektrisch aufgeladen und gleichzeitig einer Vibrationsbewegung unterworfen wird, deren Stärke zur Einstellung der Verweilzeit des Bruchgutes in der Aufladungszone (1) und damit der Aufladezeit für die Bruchgutfraktionengesteuert wird, dadurch gekennzeichnet, dass das fraktionierte, elektrisch aufgeladene Bruchgut (5) während seiner Vibrationsbewegung mit Hilfe eines einwirkenden Saugluftstroms separiert wird, derart, dass die Schalen (16) abgesaugt und in einem Zyklonabscheider (20, 27) von der Luft getrennt werden, während der Kernbruch (15) als separater Produktstrom weggefördert wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Absaugung der Schalen (16) durch eine perforierte Platte erfolgt, die die Kathode (8) der beiden Elektroden (7, 8) bildet.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Bruchgut (5) in der Außadungszone (1) im Bereich der Elektroden (7, 8) mittels einer Vibrations- oder Rütteleinrichtung (6) so aufgeladen wird, dass die Schalen (16) über dem Boden der Vibrations- oder Rütteleinrichtung in einen Schwebezustand versetzt werden, wo sie mit Hilfe einer Absaugeinrichtung (25) abgesaugt werden, während der Kembruch (15) im wesentlichen auf dem Boden der besagten Einrichtung verbleibt und sich aufgrund der Vibrationsbewegung bis zum Austrittsende (29) dieser Einrichtung weiterbewegt.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 - 3, mit einer Aufladungszone (1) zur elektrischen Aufladung des zu trennenden Bruchgutes (5) mit wenigstens einem Aufgabetrichter (4) für das zu trennende Bruchgut und wenigstens einer sich daran anschließenden und mit dem Aufgabetrichter in Förderverbindung stehende Vibrationsrinne (6), die mit unterschiedlich geladenen, ein homogenes elektrisches Feld erzeugenden Elektroden (7, 8) versehen ist, zwischen denen das zu trennende Bruchgut hindurch gefördert wird, ferner mit einer Ablenkzone (2) mit einer Absaugvorrichtung (25, 28) für die Schalen (16) des aus Kernbruch (15) und Schalen bestehenden Bruchgutes (5) und mit wenigstens einem Windsichter (27), dadurch gekennzeichnet, dass die Absaugvorrichtung (25, 28) wenigstens eine Haube (24) aufweist, welche über einer als perforierte Platte ausgebildeten Kathode (8) im Bereich der Decke der Vibrationsrinne (6) angeordnet ist, unter deren Austragsende (29) ein Fördersystem (13) für den Abtransport des Kernbruchs angeordnet ist, dass eine Separationszone (103) zur Abrennung der Schalen (16) von dem Kernbruch (15) vorgesehen ist und dass der Windsichter (27) als Zyklon (20) ausgebildet ist, welcher seinerseits über ein Abluftrohr (21) mit einem Sauggebläse (28) verbunden ist und an seinem unteren Ende einen Aufnahmebehälter (24) für die abgeschiedenen Schalen (16) aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29905061U | 1999-03-19 | ||
DE29905061U DE29905061U1 (de) | 1999-03-19 | 1999-03-19 | Vorrichtung zur Trennung eines Bruchgutes |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1038583A2 EP1038583A2 (de) | 2000-09-27 |
EP1038583A3 EP1038583A3 (de) | 2001-03-07 |
EP1038583B1 true EP1038583B1 (de) | 2004-11-03 |
Family
ID=8071098
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00100992A Expired - Lifetime EP1038583B1 (de) | 1999-03-19 | 2000-01-19 | Verfahren und Vorrichtung zur Trennung eines Bruchgutes |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1038583B1 (de) |
JP (1) | JP2000262929A (de) |
AT (1) | ATE281242T1 (de) |
DE (2) | DE29905061U1 (de) |
ES (1) | ES2229976T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019132556A1 (de) * | 2019-11-29 | 2021-06-02 | Hamburg Dresdner Maschinenfabriken Verwaltungsgesellschaft Mbh | Anordnung zum Brechen von Hülsenfrüchten, insbesondere Kakaobohnen, und zur Separation von Schalen |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4682423B2 (ja) * | 2001-01-10 | 2011-05-11 | パナソニック株式会社 | 静電選別装置 |
DE10154462A1 (de) * | 2001-11-08 | 2003-05-22 | Buehler Ag | Verfahren zum Isolieren von Aleuronteilchen |
JP4825226B2 (ja) * | 2008-01-18 | 2011-11-30 | 三菱電機株式会社 | 静電選別装置 |
PT104430A (pt) * | 2009-03-10 | 2010-09-10 | Antonio Paulo Cerqueira Duarte | Processo e dispositivo de separação electrostática de partículas de idêntica condutividade eléctrica, aplicado à purificação de café em grão |
JP5630988B2 (ja) * | 2009-12-07 | 2014-11-26 | 三菱電機株式会社 | 静電選別装置および静電選別方法 |
IT201700113261A1 (it) * | 2017-10-09 | 2019-04-09 | Univ Bologna Alma Mater Studiorum | Metodo per la valutazione della dispersione di particelle |
CN110142231B (zh) * | 2019-05-23 | 2020-07-14 | 上海交通大学 | 荧光标记水稻种子分选机构及方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2135716A (en) * | 1937-02-27 | 1938-11-08 | Ritter Products Corp | Method and apparatus for separating foodstuff of the nature of cocoa beans |
US2803344A (en) * | 1954-11-18 | 1957-08-20 | Creighton H Morrison | Middlings separator |
CH381060A (de) * | 1958-04-03 | 1964-08-15 | Gen Mills Inc | Verfahren für das elektrostatische Scheiden von Feststoffgemischen |
GB1069270A (en) * | 1964-06-04 | 1967-05-17 | Technoimpex Magyar Gepipari Ku | Device for treating seeds |
US3635340A (en) * | 1969-01-31 | 1972-01-18 | F I N D Inc | Electrostatic separating apparatus for particles |
ES2190031T3 (es) * | 1998-08-19 | 2003-07-16 | Lehmann Maschf F B | Procedimiento y dispositivo para separar electrostaticamente productos fraccionados. |
-
1999
- 1999-03-19 DE DE29905061U patent/DE29905061U1/de not_active Expired - Lifetime
-
2000
- 2000-01-19 ES ES00100992T patent/ES2229976T3/es not_active Expired - Lifetime
- 2000-01-19 DE DE50008459T patent/DE50008459D1/de not_active Expired - Fee Related
- 2000-01-19 AT AT00100992T patent/ATE281242T1/de not_active IP Right Cessation
- 2000-01-19 EP EP00100992A patent/EP1038583B1/de not_active Expired - Lifetime
- 2000-02-04 JP JP2000027110A patent/JP2000262929A/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019132556A1 (de) * | 2019-11-29 | 2021-06-02 | Hamburg Dresdner Maschinenfabriken Verwaltungsgesellschaft Mbh | Anordnung zum Brechen von Hülsenfrüchten, insbesondere Kakaobohnen, und zur Separation von Schalen |
DE102019132556B4 (de) | 2019-11-29 | 2024-03-21 | Hamburg Dresdner Maschinenfabriken Verwaltungsgesellschaft Mbh | Anordnung zum Brechen von Hülsenfrüchten, insbesondere Kakaobohnen, und zur Separation von Schalen |
Also Published As
Publication number | Publication date |
---|---|
ES2229976T3 (es) | 2005-05-01 |
ATE281242T1 (de) | 2004-11-15 |
JP2000262929A (ja) | 2000-09-26 |
DE29905061U1 (de) | 1999-06-02 |
DE50008459D1 (de) | 2004-12-09 |
EP1038583A2 (de) | 2000-09-27 |
EP1038583A3 (de) | 2001-03-07 |
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