EP0353457B1 - Dispositif de reconnaissance et de séparation d'impuretés à partir d'un courant de matériau synthétique ou en verre - Google Patents

Dispositif de reconnaissance et de séparation d'impuretés à partir d'un courant de matériau synthétique ou en verre Download PDF

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Publication number
EP0353457B1
EP0353457B1 EP89111738A EP89111738A EP0353457B1 EP 0353457 B1 EP0353457 B1 EP 0353457B1 EP 89111738 A EP89111738 A EP 89111738A EP 89111738 A EP89111738 A EP 89111738A EP 0353457 B1 EP0353457 B1 EP 0353457B1
Authority
EP
European Patent Office
Prior art keywords
sensors
stream
valves
chute
glass
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
Application number
EP89111738A
Other languages
German (de)
English (en)
Other versions
EP0353457A3 (en
EP0353457A2 (fr
Inventor
Helmuth Frisch
Manfred Artinger
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.)
S+S Metallsuchgeraete und Recyclingtechnik GmbH
Original Assignee
S+S Metallsuchgeraete und Recyclingtechnik GmbH
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 S+S Metallsuchgeraete und Recyclingtechnik GmbH filed Critical S+S Metallsuchgeraete und Recyclingtechnik GmbH
Publication of EP0353457A2 publication Critical patent/EP0353457A2/fr
Publication of EP0353457A3 publication Critical patent/EP0353457A3/de
Application granted granted Critical
Publication of EP0353457B1 publication Critical patent/EP0353457B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air
    • B07C5/365—Sorting apparatus characterised by the means used for distribution by means of air using a single separation means
    • B07C5/366—Sorting apparatus characterised by the means used for distribution by means of air using a single separation means during free fall of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties
    • B07C5/344—Sorting according to other particular properties according to electric or electromagnetic properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0036—Sorting out metallic particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00—Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0054—Sorting of waste or refuse

Definitions

  • the invention relates to a device for detecting and separating metallic contaminants in a material flow made of plastic or glass according to the preamble of the main claim.
  • the above-mentioned document describes a device for separating particles from a bulk goods heap, with which the bulk goods parts can be sorted according to certain criteria, for example, sorting broken glass pieces according to their color.
  • the bulk material throughput should take place on an industrial scale, i.e. even with larger bulk material throughput, it should be ensured that the bulk material streams are separated in such a way that bulk material particles arranged one behind the other can be recognized and evaluated.
  • a vibrating trough with a downstream free-fall section is used, color detection sensors scanning the free-fall section and selective blowing nozzles downstream of these sensors, so that color-selective collection can be carried out in a collecting container.
  • US-A-3,179,247 describes certain light detectors for material sorters which provide output signals depending on the opaque particles being scanned.
  • the evaluation criteria are matched to the special case described there and are not generally transferable because they can only be used in particular for transparent objects.
  • An advantage of the known arrangement is that one or more adjacent sensors are activated in accordance with the size of the parts to be eliminated, and one or more blowing nozzles can thus be actuated on the basis of their output signals.
  • EP-A1-325 558 In a not previously published European document (EP-A1-325 558), a method and a device are described which, comparable to the present invention, serve for the detection of foreign bodies in a stream of bodies which are permeable to electromagnetic radiation.
  • the object of the present invention is to further develop a device of the generic type in such a way that the impurities are targeted, ie can be removed with very high security, so that the amount of waste occurring can be reduced and re-sorting can be prevented.
  • the sensors designed as metal detectors consist of a transmitter loop which specifies a high-frequency electromagnetic field and extends over the entire width of the material flow, and on the receiver side consist of a plurality of mutually independent coils, where each of the coils consists of two windings connected in opposite directions.
  • the electromagnetic field generated by the transmitter loop induces equally large but opposite AC voltages in the opposite windings of the coil of each individual detector, so that the difference in the normal state, i.e.
  • the difference signal is amplified in a differential amplifier and rectified via a rectifier, so that the amplitude of the amplified Signal is a clear measure not only for the presence of metal particles in the material flow, but even for the size of the respective metal particle, since a comparison can be used to make use of a difference value within a comparator circuit, which not only enables qualitative but also quantitative evaluation .
  • metallic contaminants are removed from a stream of plastic or glass material.
  • the material stream 1 to be examined is spread uniformly on a feed device 2, for example a conveyor belt, and distributed over its entire width.
  • the material flow consists of lumpy parts that are easy to pour. With glass, the body size should be as uniform as possible.
  • a chute 3 connects to the feed device 2, on which the material stream 1 is drawn out in length due to the acceleration due to the fall.
  • Part of the slide 3 is made of glass 4 or ceramic material, and, as shown in FIG. 1, the glass plate 4 can also be arranged separately from the slide 3.
  • a sensor arrangement 5 which consists of several sensors, the sensors extending over the entire width of the material flow 1.
  • the output signals of the sensor arrangement are forwarded to a control unit 6, which controls the solenoid valves 7 depending on the signal state.
  • the valves 7 are connected to an air accumulator and distributor 8 and actuate blow nozzles 9 which are arranged transversely to the material flow 1 in its fall line. If one of the output signals of the sensors of the sensor arrangement 5 reports a contamination 10 to the control unit 6, it controls the valve 7 assigned to the sensor, which actuates the associated blowing nozzle 9, the control unit 6 naturally taking into account the fall time of the contamination 10 from the detection point to the blowing point. As shown in FIG.
  • the impurity 10 is blown out of the material stream 1 and falls via a deflector 11 into a container 12 for the impurities, while the remaining material stream is collected and / or passed on free of impurities by a collecting device 13 .
  • the blow-out point is covered by a protective hood 14.
  • the sensor arrangement 5 in which metallic contaminations are to be detected, the sensor arrangement 5 consists of a metal detector arrangement, with many small metal detectors being required for targeted detection of the location of the metallic contamination. To rule out mutual interference, the overall system must be "single-frequency". Therefore, with a transmitter loop that extends over the entire width of the material stream 1, a high-frequency magnetic field is generated, which supplies the receivers that are at a certain distance from the transmitter loop.
  • FIG. 2 shows a block diagram of the electrical arrangement with metal detector and control unit 6.
  • An oscillator 20 with a power output stage supplies the transmitter loop 21 with a continuous sinusoidal AC voltage, the frequency of which can be in the range from 1 kHz to approximately 1 MHz.
  • the transmitter loop 21 is on Trimming capacitor 22 in parallel, which together form an oscillating circuit.
  • the receiver ie the actual metal detector, consists of several independent coils, one of the coils 23 being shown in the drawing.
  • the coil 23 is constructed from two windings 24, 25 connected to one another, which are connected to a differential amplifier 26.
  • the differential amplifier 26 is followed by a rectifier 27, a low-pass filter 28, an amplifier 29 and a comparator 30.
  • the electromagnetic field generated by the transmitter loop 21 induces equally large alternating voltages in the windings 24, 25 of the coil 23, but by connecting the coil windings in opposite directions, so that the difference in the normal state, ie without metallic contamination, is equal to or approximately zero.
  • the difference signal is amplified in the differential amplifier 26, rectified and filtered in the rectifier 27.
  • the amplitude of the signal which is amplified in the amplifier 29 and is a measure of the size of the metal part, is compared with a reference value, this comparison being carried out in the comparator 30, which, as soon as the amplitude of the signal exceeds the predetermined reference value, generates a digital switching signal.
  • the digital switching signal is sent to a control unit 31, which is part of the control unit 6 and controls the solenoid valves 7.
  • Various parameters can be set via a control unit (not shown), for example the sensitivity caused by changing the height the reference voltage 32, ie is given by the switching threshold of the comparator 30.
  • the control unit 6 preferably has a microprocessor which interrogates and reads in the signals of the individual coils 23 at a defined clock frequency. After the preset delay time, the corresponding solenoid valves 7 are also actuated for the specific preset blowing time. The program also monitors the frequency with which a solenoid valve is switched on in order to detect malfunctions, for example when a valve is switched on continuously. The control of the valves 7 by the microprocessor takes into account the geometric distances between the coil 23 and blow-out nozzles 9, which is compensated for by the delay time. The valves 7 are activated earlier by their reaction time.
  • the coils 23 and the valves 7 are assigned in a special way in order to achieve the smallest possible reject quantity with each blowing pulse, which is caused by a metal part in the material flow 1. This assignment is shown in Fig. 3.
  • Each coil 23 is assigned two valves 7 in the falling line, which is identified by the arrow 35, which are controlled as follows: If coil A responds, valves V1, V2 are activated; if coils A and B respond, valves V2 and V3 are activated. If coil B responds, valves V3 and V4 are activated, and if coils B and C respond, valves V4 and V5 are activated; this continues in the same way. This control ensures that only one coil width, which corresponds to two valves, is blown out.
  • metal detectors are used as sensors, since metal parts are to be removed from the material flow.
  • optoelectronic sensors can also be used as sensors, which detect both mineral contaminants such as clay or ceramics and metallic contaminants. The evaluation and control then takes place in an analogous manner.

Claims (3)

  1. Dispositif d'identification et de séparation d'impuretés métalliques dans un courant de matière synthétique ou de verre (1), pourvu d'un équipement d'arrivée (2) pour acheminer la matière en morceaux, d'un toboggan (3) et d'un grand nombre de capteurs (5) pour détecter les impuretés, les capteurs (5) et des buses soufflantes (9) pilotées par ceux-ci étant disposés sous le toboggan (3) en travers par rapport au courant de matière (1) et sur toute la largeur de ce courant, dans une zone dans laquelle ledit courant de matière (1) en morceaux se trouve en chute libre, caractérisé en ce que les capteurs (5) conçus comme détecteurs de métaux présentent une boucle d'émetteur (21) s'étendant sur la largeur du courant de matière (1) et imposant un champ électromagnétique haute fréquence, ainsi qu'un grand nombre de bobines (23) réceptrices indépendantes les unes des autres et constituées chacune de deux enroulements (24, 25) de sens contraire.
  2. Dispositif selon la revendications 1, caractérisé en ce qu'à chaque capteur (5 à 21, 23 ; A, B, C, D) correspondent deux buses soufflantes (9) commandées par des vannes (7 ; V1 à V8), la réaction de deux capteurs (5) voisins commandant celles parmi les quatre buses soufflantes ou vannes correspondantes qui sont voisines.
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que les capteurs sont contenus dans un boîtier en fome de baguette entourant le toboggan (3), la partie de toboggan ainsi entourée étant en verre (4) ou en céramique.
EP89111738A 1988-08-05 1989-06-28 Dispositif de reconnaissance et de séparation d'impuretés à partir d'un courant de matériau synthétique ou en verre Expired - Lifetime EP0353457B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827024 1988-08-05
DE3827024A DE3827024C2 (de) 1988-08-05 1988-08-05 Vorrichtung zum Erkennen und Trennen von Verunreinigungen aus einem Kunststoff- oder Glasmaterialstrom

Publications (3)

Publication Number Publication Date
EP0353457A2 EP0353457A2 (fr) 1990-02-07
EP0353457A3 EP0353457A3 (en) 1990-04-18
EP0353457B1 true EP0353457B1 (fr) 1994-09-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111738A Expired - Lifetime EP0353457B1 (fr) 1988-08-05 1989-06-28 Dispositif de reconnaissance et de séparation d'impuretés à partir d'un courant de matériau synthétique ou en verre

Country Status (3)

Country Link
EP (1) EP0353457B1 (fr)
DE (2) DE3827024C2 (fr)
ES (1) ES2060700T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006020496U1 (de) 2005-10-10 2008-11-20 Gurok, Oliver Sensorvorrichtung zum Erkennen elektromagnetisch detektierbarer Fördergutteile und Sortiervorrichtung mit einer solchen Sensorvorrichtung
DE102009008928A1 (de) * 2009-02-13 2010-08-26 Heinen-Köhl Tobacco GmbH Verfahren und Vorrichtung zur Reinigung von Schüttgut
DE102009040923B3 (de) * 2009-09-11 2011-05-05 Müller, Matthias Vorrichtung und Verfahren zur Herstellung einer Wurstschnecke

Families Citing this family (23)

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DE4017129A1 (de) * 1990-05-28 1991-12-05 Seichter Gmbh Einrichtung zum sortieren von glasbruchstuecken
AT395545B (de) * 1990-10-04 1993-01-25 Binder Co Ag Sortiereinrichtung
USRE36537E (en) * 1990-10-29 2000-02-01 National Recovery Technologies, Inc. Method and apparatus for sorting materials using electromagnetic sensing
US5260576A (en) * 1990-10-29 1993-11-09 National Recovery Technologies, Inc. Method and apparatus for the separation of materials using penetrating electromagnetic radiation
DE4100346A1 (de) * 1991-01-08 1992-07-09 Preussag Ag Verfahren zur mechanischen aufbereitung von unsortiertem geraeteschrott
JPH06506149A (ja) * 1991-03-14 1994-07-14 ウェルマン・インコーポレーテッド プラスチック物品を分類する方法及び装置
DE4200226A1 (de) * 1992-01-08 1993-07-15 Josef Kamps Maschine zum erkennen von farbunterschieden an einzelnen fraktionen von schnittguetern und gleichzeitiger fraktionierung
EP0550944B1 (fr) * 1992-01-10 1995-07-12 Toyo Glass Company Limited Dispositif pour trier des articles étrangers opaques, parmi des corps transparents
AU654317B2 (en) * 1992-01-14 1994-11-03 Toyo Glass Company Limited Apparatus for sorting opaque foreign article from among transparent bodies
DE59309618D1 (de) * 1992-02-12 1999-07-08 Merten Kg Pulsotronic Vorrichtung zum Ausscheiden von Metallteilchen
AT399400B (de) * 1993-03-15 1995-04-25 Binder Co Ag Verfahren und einrichtung zur bestimmung der reinheit von aufbereitetem altglas
DE4323391C2 (de) * 1993-07-13 1996-03-14 Bfi Entsorgungstech Vorrichtung zum Aussortieren großer Gegenstände aus Materialgemischen und Verfahren unter Verwendung der Vorrichtung
DE4415959A1 (de) * 1994-05-06 1995-11-09 Hergeth Hubert A Maschine zum Ausscheiden von metallischen Fremdteilen in einem Textilfaserstrom
AT400906B (de) * 1994-10-25 1996-04-25 Binder Co Ag Verfahren und einrichtung zur bestimmung der reinheit von aufbereitetem altglas
DE19531427C2 (de) * 1995-08-27 2002-03-21 Thyssenkrupp Stahl Ag Verfahren und Vorrichtung zur Optimierung der Belegung eines Transportmittels
DE19643382C2 (de) * 1996-10-21 1999-12-02 S & S Metallsuchgeraete & Recy Verfahren und Vorrichtung zur Bestimmung des Verunreinigungsgrades von Altglas durch Stichprobenprüfung
DE10003562A1 (de) * 2000-01-27 2001-08-16 Commodas Gmbh Vorrichtung und Verfahren zum Aussortieren von metallischen Fraktionen aus einem Schüttgutstrom
EP1347311B1 (fr) * 2002-03-23 2012-02-08 Lorenz Roatzsch Procédé de détection d'objets, particulièrement d'objets métalliques
DE10213115A1 (de) * 2002-03-23 2003-10-16 Lorenz Roatzsch Verfahren zum Aussortieren von Metallobjekten bzw. eine Sortieranlage, ein Detektor sowie eine Schaltungsanordnung hierfür
EP1375017A1 (fr) * 2002-06-05 2004-01-02 Asahi Glass Company Ltd. Procédé de récupération des particules en verre
CN102416386B (zh) * 2011-10-27 2013-09-18 山东博润工业技术股份有限公司 干法排煤矸石选煤的工艺及系统
FR3012438B1 (fr) * 2013-10-24 2015-12-25 Veolia Proprete Caisson d'ejection pour objets ejectes par jet d'air
CN112845138A (zh) * 2021-01-29 2021-05-28 广东中翔环保建材有限公司 玻璃分拣装置以及玻璃分拣方法

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US4311241A (en) * 1979-11-13 1982-01-19 Lockwood Corporation Method for separating clods and the like from potatoes
DE3002239A1 (de) * 1980-01-23 1981-07-30 Erkelenzer Maschinenfabrik Ferd.Clasen KG, 5140 Erkelenz Vorrichtung zur vereinzelung von teilchen eines schuettguthaufens
US4541530A (en) * 1982-07-12 1985-09-17 Magnetic Separation Systems, Inc. Recovery of metallic concentrate from solid waste
FR2576008B1 (fr) * 1985-01-16 1992-01-31 Bsn Dispositif de tri optique du groisil, pour obtenir du calcin, et installation comprenant de tels dispositifs
DE3618173A1 (de) * 1986-05-30 1987-12-03 Mab Marlis Kellermann Glas-sortieranlage
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006020496U1 (de) 2005-10-10 2008-11-20 Gurok, Oliver Sensorvorrichtung zum Erkennen elektromagnetisch detektierbarer Fördergutteile und Sortiervorrichtung mit einer solchen Sensorvorrichtung
DE102009008928A1 (de) * 2009-02-13 2010-08-26 Heinen-Köhl Tobacco GmbH Verfahren und Vorrichtung zur Reinigung von Schüttgut
DE102009040923B3 (de) * 2009-09-11 2011-05-05 Müller, Matthias Vorrichtung und Verfahren zur Herstellung einer Wurstschnecke

Also Published As

Publication number Publication date
EP0353457A3 (en) 1990-04-18
DE58908307D1 (de) 1994-10-13
ES2060700T3 (es) 1994-12-01
DE3827024C2 (de) 1995-01-19
EP0353457A2 (fr) 1990-02-07
DE3827024A1 (de) 1990-02-08

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