EP1647337A1 - Appareil et méthode de triage des articles - Google Patents

Appareil et méthode de triage des articles Download PDF

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Publication number
EP1647337A1
EP1647337A1 EP05022662A EP05022662A EP1647337A1 EP 1647337 A1 EP1647337 A1 EP 1647337A1 EP 05022662 A EP05022662 A EP 05022662A EP 05022662 A EP05022662 A EP 05022662A EP 1647337 A1 EP1647337 A1 EP 1647337A1
Authority
EP
European Patent Office
Prior art keywords
sorting
piece goods
radiation
signal
characteristic
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.)
Granted
Application number
EP05022662A
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German (de)
English (en)
Other versions
EP1647337B1 (fr
Inventor
Peter Gantze
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.)
Mami Modern Allround Management International
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Mami Modern Allround Management International
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 Mami Modern Allround Management International filed Critical Mami Modern Allround Management International
Priority to AT05022662T priority Critical patent/ATE432777T1/de
Publication of EP1647337A1 publication Critical patent/EP1647337A1/fr
Application granted granted Critical
Publication of EP1647337B1 publication Critical patent/EP1647337B1/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
    • B07C5/34—Sorting according to other particular properties
    • B07C5/346—Sorting according to other particular properties according to radioactive properties

Definitions

  • the invention relates to a sorting device and a sorting method for piece goods, which is introduced via a conveyor belt or the like, wherein the piece goods are exposed to X-radiation and emitted from the unit X-ray radiation is measured, and wherein a sorting process is controlled on the basis of the measurement signal.
  • a sorting system for various types of waste paper which supplies the pieces of paper with a conveyor belt to an irradiation device.
  • This has two radiation sources, as well as a detector which detects the radiation emanating from the sample.
  • the radiation source both visible light, infrared radiation and X-rays can be used.
  • the detector may be a simple camera, but also a device with which the wavelength of the emitted measuring radiation can be detected.
  • an air nozzle is actuated with which the piece goods are conveyed into different containers.
  • a sorting plant for crops is known, with which, for example, potatoes can be separated from stones and other impurities.
  • the mixture of rocks, crops, and soil is fed to a well in which it passes through the radiation field of a radiation source (e.g., X-rays).
  • a radiation source e.g., X-rays
  • the different attenuation of the output radiation due to the different material densities is measured and used as a control signal for deflecting elements, which sort out the stones and impurities.
  • the sorting method is suitable only for piece goods with sufficiently different material density or for materials with distinguishable absorption coefficients for the radiation used.
  • the object of the invention is, starting from known sorting and sorting devices to propose improvements that allow sorting material with very similar values for the material density or similar penetration depth for the ionizing radiation used safely separated even at a rapid throughput, the analysis effort should be kept low ,
  • This object is achieved in that the measurement is limited to one or a few characteristic X-ray emission lines of a predetermined chemical element in the piece goods whose radiation intensity is detected with a single-channel measurement and from an analog measurement signal is derived, based on a predetermined threshold of the analog Measuring signal of the sorting process is initiated.
  • the advantage is that no X-ray fluorescence analysis has to be carried out since, in the best case, the sorting process is based on the measurement of only one characteristic X-ray emission line whose intensity is detected with a single-channel measurement. In the separation of PET bottles and vinyl bottles is sufficient, for. the measurement of the intensity of the CI K ⁇ line to win a unique sorting signal.
  • At least one reference measured value in the emission spectrum outside the energy range of the characteristic X-ray emission line is detected with a single-channel measurement and at least one analog reference signal is derived therefrom.
  • the measurement signal can be normalized with the aid of the reference signal.
  • the reference signal can be obtained in the region of the anode radiation.
  • a sorting device is characterized in that the detection device has at least one energy-dispersive detector, which is followed by at least one single-channel analyzer, which is set to a characteristic X-ray emission line of a predetermined chemical element in the piece goods, the analog measurement signal optionally via a control and Evaluation device controls the sorting device.
  • the detector is followed by at least one further single-channel analyzer, which is set to a region outside the energy range of the characteristic X-ray emission line whose analog reference signal is used to normalize the measurement signal.
  • the sorting device for piece goods 1 shown in FIG. 1 has a conveying device (not shown) with a conveyor belt 2, with which the piece goods 1 are moved in the direction of movement 3.
  • the conveyor belt 2 is an X-ray source 4 for exciting the piece goods 1 with X-radiation, and associated with a detection device 5 for detecting the output of the piece goods 1 measuring radiation.
  • the detection device 5 has at least one energy-dispersive detector 5 ', which is followed by a Einkanalanalysator 6, which is set to a characteristic X-ray emission line of a predetermined chemical element in the article 1.
  • the analogue output signal of the single-channel analyzer 6 is fed either directly or via a control and evaluation device 7 to a sorting device 8.
  • the sorting device 8 has a drive 9 for a pivotable flap 10, so that upon reaching a predetermined threshold value in the analog measurement signal of the sorting process can be triggered.
  • a drive 9 for a pivotable flap 10 so that upon reaching a predetermined threshold value in the analog measurement signal of the sorting process can be triggered.
  • other known sorting devices can be used, for example, air nozzles, which are controlled by the signal of the control and evaluation device 7.
  • the energy-dispersive detector 5 ' is followed by at least one further single-channel analyzer 11, which is set to a region outside the energy range of the characteristic X-ray emission line whose analog reference signal is used to normalize the measurement signal.
  • a ratio signal can be formed in the control and evaluation unit 7 from the measurement signal and the reference signal.
  • the output signal of the detector 5 ' is fed via a preamplifier 12 to a discriminator circuit, which in the example shown supplies the fluorescence spectrum in six Energy window decomposed.
  • a discriminator circuit which in the example shown supplies the fluorescence spectrum in six Energy window decomposed.
  • One of the single-channel measurements takes place in the area of the CI emission line, others in the area of the flanks or the top of the Fe line.
  • the single-channel measurements outside the Cl line are used to standardize the measurement signal.
  • Fig. 3 shows a section of the sorting device transverse to the width b of the conveyor belt 2, wherein in a linear sequence detectors 5 'and x-ray sources 4 are arranged so that the cargo 1 on the conveyor belt 2 are subjected to the smallest possible radiation exposure to the environment as homogeneously as possible with x-rays can.
  • Fig. 4 is shown as a measurement example, the measurement of a vinyl-plastic bottle containing chlorine.
  • the bottle In the field of view of the detector field, the bottle generates a Cl signal whose signal height depends on the distance between the measuring spot on the bottle and the detectors, and on the different thickness of the material in the neck and bottom area.
  • a PET plastic bottle would not generate a signal, so that a sorting process can be initiated due to the analog measurement signal from the detectors.
  • FIG. 5 shows a fluorescence spectrum of a sample with chlorine, as well as a sample without chlorine, wherein the energy in keV is plotted on the x-axis.
  • the chlorine K ⁇ line is clearly recognizable at 2.6 keV, which is absent in the sample without chlorine (solid line).
  • the peak to the right of the chlorine line comes from the Bremsstrahlung of the X-ray tube.
  • FIG. 6 shows the attainable detection limit (minimum detection level) for chlorine, whereby an MDL of less than 1% can be achieved.

Landscapes

  • Analysing Materials By The Use Of Radiation (AREA)
  • Sorting Of Articles (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
  • Discharge Of Articles From Conveyors (AREA)
EP05022662A 2004-10-18 2005-10-18 Appareil et méthode de triage des articles Expired - Lifetime EP1647337B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT05022662T ATE432777T1 (de) 2004-10-18 2005-10-18 Sortiervorrichtung und sortierverfahren für stückgut

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0174404A AT501020B8 (de) 2004-10-18 2004-10-18 Sortiervorrichtung und sortierverfahren für stückgut

Publications (2)

Publication Number Publication Date
EP1647337A1 true EP1647337A1 (fr) 2006-04-19
EP1647337B1 EP1647337B1 (fr) 2009-06-03

Family

ID=34596329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05022662A Expired - Lifetime EP1647337B1 (fr) 2004-10-18 2005-10-18 Appareil et méthode de triage des articles

Country Status (3)

Country Link
EP (1) EP1647337B1 (fr)
AT (2) AT501020B8 (fr)
DE (2) DE202005003566U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057119A1 (de) * 2009-12-08 2011-06-09 Titech Gmbh Vorrichtung und Verfahren zur Abtrennung von schweren, mit unerwünschten Zusammensetzungen anfallenden Brocken
CN112007877A (zh) * 2020-09-21 2020-12-01 绵阳市维博电子有限责任公司 一种放射性污染物在线式检测分选系统及方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356211A (en) * 1964-12-07 1967-12-05 Ted C Mathews Separation of ore particles preferentially coated with liquid fluorescent material
US3872306A (en) 1972-04-19 1975-03-18 Nat Res Dev Separating apparatus
EP0345949A2 (fr) * 1988-05-06 1989-12-13 Gersan Establishment Détection d'une radiation dans une bande de fréquence étroite et examen d'objets ou de domaines
US5339962A (en) 1990-10-29 1994-08-23 National Recovery Technologies, Inc. Method and apparatus for sorting materials using electromagnetic sensing
GB2280956A (en) * 1991-02-20 1995-02-15 Gersan Ets Detecting diamonds in a plurality of objects
DE4433937A1 (de) * 1994-09-23 1996-03-28 Martin Dipl Ing Huonker Verfahren zur Markierung und Erkennung von Kunststoffen
US6266390B1 (en) * 1998-09-21 2001-07-24 Spectramet, Llc High speed materials sorting using x-ray fluorescence
US6506991B1 (en) 1999-04-30 2003-01-14 Binder & Co. Aktiengesellschaft Method and apparatus for sorting waste paper of different grades and conditions

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4136778A (en) * 1975-08-12 1979-01-30 Burlington Industries, Inc. Linen sorter
CA1242260A (fr) * 1986-04-24 1988-09-20 Leonard Kelly Methode et dispositif de tri de rebuts metalliques divers
US5314072A (en) * 1992-09-02 1994-05-24 Rutgers, The State University Sorting plastic bottles for recycling
US6765986B2 (en) * 2001-02-08 2004-07-20 Niton Corporation X-ray fluorescence analyzer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3356211A (en) * 1964-12-07 1967-12-05 Ted C Mathews Separation of ore particles preferentially coated with liquid fluorescent material
US3872306A (en) 1972-04-19 1975-03-18 Nat Res Dev Separating apparatus
EP0345949A2 (fr) * 1988-05-06 1989-12-13 Gersan Establishment Détection d'une radiation dans une bande de fréquence étroite et examen d'objets ou de domaines
US5339962A (en) 1990-10-29 1994-08-23 National Recovery Technologies, Inc. Method and apparatus for sorting materials using electromagnetic sensing
GB2280956A (en) * 1991-02-20 1995-02-15 Gersan Ets Detecting diamonds in a plurality of objects
DE4433937A1 (de) * 1994-09-23 1996-03-28 Martin Dipl Ing Huonker Verfahren zur Markierung und Erkennung von Kunststoffen
US6266390B1 (en) * 1998-09-21 2001-07-24 Spectramet, Llc High speed materials sorting using x-ray fluorescence
US6506991B1 (en) 1999-04-30 2003-01-14 Binder & Co. Aktiengesellschaft Method and apparatus for sorting waste paper of different grades and conditions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009057119A1 (de) * 2009-12-08 2011-06-09 Titech Gmbh Vorrichtung und Verfahren zur Abtrennung von schweren, mit unerwünschten Zusammensetzungen anfallenden Brocken
EP2335837A1 (fr) 2009-12-08 2011-06-22 Titech GmbH Dispositif et procédé de séparation de morceaux lourds produits avec des compositions non souhaitées
CN112007877A (zh) * 2020-09-21 2020-12-01 绵阳市维博电子有限责任公司 一种放射性污染物在线式检测分选系统及方法
CN112007877B (zh) * 2020-09-21 2024-04-30 中国兵器装备集团自动化研究所有限公司 一种放射性污染物在线式检测分选系统及方法

Also Published As

Publication number Publication date
AT501020B8 (de) 2007-02-15
ATE432777T1 (de) 2009-06-15
DE502005007395D1 (de) 2009-07-16
AT501020B1 (de) 2006-09-15
AT501020A1 (de) 2006-05-15
EP1647337B1 (fr) 2009-06-03
DE202005003566U1 (de) 2005-05-19

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