EP2111927A1 - Dispositif pour séparer papier et carton - Google Patents

Dispositif pour séparer papier et carton Download PDF

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Publication number
EP2111927A1
EP2111927A1 EP08007997A EP08007997A EP2111927A1 EP 2111927 A1 EP2111927 A1 EP 2111927A1 EP 08007997 A EP08007997 A EP 08007997A EP 08007997 A EP08007997 A EP 08007997A EP 2111927 A1 EP2111927 A1 EP 2111927A1
Authority
EP
European Patent Office
Prior art keywords
sorting
belt
tines
cardboard
paper
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Withdrawn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
EP08007997A
Other languages
German (de)
English (en)
Inventor
Albert Wagensveld
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.)
Wagensveld BV
Original Assignee
Wagensveld BV
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 Wagensveld BV filed Critical Wagensveld BV
Priority to EP08007997A priority Critical patent/EP2111927A1/fr
Priority to AT09158744T priority patent/ATE487546T1/de
Priority to DK09158744.4T priority patent/DK2111928T3/da
Priority to DE602009000325T priority patent/DE602009000325D1/de
Priority to EP09158744A priority patent/EP2111928B1/fr
Publication of EP2111927A1 publication Critical patent/EP2111927A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/023—Cleaning wood chips or other raw materials
    • 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
    • B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/026—Separating fibrous materials from waste
    • D21B1/028—Separating fibrous materials from waste by dry methods

Definitions

  • the invention concerns a device in accordance with the preamble of claim 1.
  • Publication EP 1785200 from the same applicant describes such a device.
  • the disadvantage of the known device is that the belt has grooves for the sorting tines and providing these grooves requires additional measures. Also the grooves and the sorting tines have to align which leads to additional costs.
  • the device is according to claim 1. It appeared that the flexible surface under the sorting tines prevents the paper sheets to be pierced by the sorting tines that press a depression in the flexible surface so that paper sheets are not picked up by the sorting tines. The more stiff cardboard pieces do not bend into the depression and the sorting tines pierce the cardboard pieces sufficiently so that the cardboard pieces attach to the sorting tines and are picked up.
  • the device is according to claim 2. This embodiment ensures that the shoulder of a sorting tine grips the cardboard piece and this improves lifting the cardboard piece from the support means.
  • the device is according to claim 3.
  • the sorting belt transports the paper sheets and cardboard pieces towards the sorting tines and also supports them while the sorting tines press on them and pick the cardboard pieces from the sorting belt. This makes a simple construction.
  • the device is according to claim 4.
  • the roller supports the paper sheets and cardboard pieces under the sorting tines and the resilient top surface is only on the roller.
  • a standard endless belt can transport the paper sheets and cardboard pieces to the roller.
  • the device is according to claim 5.
  • the sorting belt or the roller support the cardboard sufficiently and have sufficient flexibility to create a depression under the sorting tines for it to be penetrated.
  • the sorting device 1 as shown in figure 1 comprises a frame 25 having two sidewalls 14 between which a sorting belt 13 can move in a direction of conveyance 32.
  • the sorting belt 13 runs over a drive pulley 20 and a return pulley 20A and is guided by support rollers 21 between the sidewalls 14 and held taut by the return pulley 20A.
  • a drive 22 drives the sorting belt 13.
  • a supply belt 2 supplies a mixture of sheets of paper and cardboard to be sorted to the sorting device 1.
  • the speeds of the supply belt 2 and the sorting belt 13 are selected in such a way that preferably the supply belt 2 deposits individual sheets one after the other in a single layer on the sorting belt 13.
  • Document EP 1785200 gives a more detailed description of a similar device and the skilled man can think of many variations of the design of the sorting belt and/or the sorting device.
  • the mixture of pieces of cardboard and sheets of paper lying on the sorting belt 13 are conveyed along underneath sorting tines 3 extending from the outside surface of an inner drum 6 that rotates with the sorting belt 13 in a direction of rotation 27 around a bottom axis of rotation 8.
  • the sorting tines 3 extend from the outside of the inner drum 6 at a radius R from the bottom axis of rotation 8.
  • the sorting tines 3 lift pieces of cardboard off the sorting belt 13 and deposit these on a first discharge belt 9 and the sheets of paper remain lying on the sorting belt 13 and are conveyed to a second discharge belt 12.
  • guide plates 11 are provided in order to prevent the sheets of paper from falling onto the ground.
  • the second discharge belt 12 conveys the sheets of paper to a storage place and/or a place where the paper is processed further.
  • cardboard and pieces of cardboard also include corrugated cardboard and those types of paper that have an increased stiffness against bending, which might include books or a bundle of paper sheets.
  • a guide plate 10 guides the falling pieces of cardboard.
  • Support rollers 16 are provided on the outside of the sidewalls 14 on the frame 25. On these support rollers 16 the outer drum 5 can rotate about a top axis of rotation 7 which is preferably more or less perpendicular to the direction of conveyance 32 of the sorting belt 13.
  • the outer drum 5 is completely open on the inside and has a guide edge 4, as a result of which the outer drum 5 always stays more or less in the same position above the sorting belt 13.
  • the inner drum 6 rests on the bottom part of the outer drum 5, which inner drum rotates with the outer drum 5 about the bottom axis of rotation 8.
  • the sorting tines 3 are fitted in the inner drum 6 in such a way that they can be changed easily in the event of wear and also for the purpose of fitting the inner drum 6 in the outer drum 5.
  • pressure rollers 17 are preferably provided at the position of the support rollers 16, each pressure roller being fixed by means of springs 18 on a support 19.
  • the springs 18 make some movement of the inner drum 6 relative to the outer drum 5 possible.
  • the sorting belt 13 is supported by a support plate 15 which by way of springs 23 rests upon a support 24 fixed on the frame 25. Because of the springloaded support plate 15 and also because of the possibility of movement of the inner drum 6, the sheets of paper and cardboard pieces lying on the belt conveyor 13 can have a changing thicknesses without causing any problem.
  • Figure 1 also shows a detail of a front view of the drums 5,6.
  • the drums 5,6 have a width B above the sorting belt 13 in which the sorting tines 3 are mounted.
  • the sorting tines 3 are mounted in rows that have a distance A and in the direction of rotation 27 a pitch distance P.
  • the distance A is preferably less than half the usual width of a sheet of paper and is for instance 50 mm.
  • the pitch P is preferably less than half the usual width of a sheet of paper and is for instance 100 mm in the situation where the rows of the sorting tines 3 are staggered, so that the sorting tines 3 of a next row of sorting tines 3 is between the sorting tines of the first row of sorting tines 3. This means that during rotation of the drums 5,6 every 50 mm a sorting tine 3 contacts the paper or cardboard on the sorting belt 13.
  • FIG. 2 shows the interaction between the sorting tines 3 and the sorting belt 13 on which a sheet of paper 36 is laying.
  • the sorting belt 13 comprises a stiff belt part 31 that is strong as in the usual transport belts and that is looped around the drive pulley 20 and the return pulley 20A and slides over the support plate 15.
  • the sorting belt 13 further comprises a resilient belt part 30 fastened on the outside surface of the stiff belt part 31 for instance by gluing or on which it is vulcanized.
  • the top of the resilient belt part 30 forms a belt top surface 29 that supports the paper or cardboard to be sorted.
  • the resilient belt part 30 can be from a sheet pararubber, which is an elastic material that can deform easily.
  • the bottom axis of rotation 8 of the inner drum 6 with the sorting tines 3 is located at such height above the support plate 15 that the radius R at which the sorting tines 3 rotate intersects the belt top surface 29.
  • the sorting tines 3 have a tine shaft 36, a tine tip 34 with a tip radius 35 and near the tip a reduction in the diameter of the tine shaft 36 so creating a tine shoulder 33 near the tine tip 34.
  • the distance between the tine shoulder 33 and the tine tip 34 is a tip distance T. Where the path of the sorting tines 3 intersects the belt top surface 29 the tine tip 34 presses a depression 38 with a depth D in the resilient belt part 30.
  • the tip 34 presses the paper sheet 37 in the depression 38 as well. This is a result of the flexibility of the paper sheet 37 so that it follows the belt top surface 29 in the depression 38. Possibly because of the support of the paper sheet 37 by the belt top surface 29, the tine tip 34 does not penetrate the paper sheet 37. In the situation where several sheets of paper 37 are on top of one another, the tine tip 34 might penetrate one or more sheets. As a result of the limited penetration, the ease with which paper shears and/or possibly the conical surface of the tine tip 34 the sorting tine 3 does not grip the paper sheet 37 and the paper sheet remains lying on the belt top surface 29.
  • Figure 3 shows the interaction of the sorting tines 3 with the sorting belt 13 on which a cardboard piece 39 is transported.
  • the sorting tines 3 impress the depression 38 with the depth D in the resilient belt part 30 in the same manner as indicated in figure 2 .
  • the cardboard piece 39 does not bend into the depression 38 and the tine tip 34 makes a hole 40 in the cardboard piece 39.
  • the sorting tine 3 moves upwards, the cardboard piece 39 remains fastened around the sorting tine 3 and/or hooks behind the shoulder 33 and so the sorting tines 3 move the cardboard piece 39 further upwards and lift the cardboard piece 39 from the belt top surface 29.
  • Figure 3 shows a single cardboard piece 39 that has a certain thickness compared to the paper sheet 37 shown in figure 2 . It will be clear from the earlier description that the sorting tines 3 also will pick up thicker cardboard pieces and thicker stacks of paper, for instance sheets or folded boxes from corrugated cardboard, books, etc.
  • the sorting tines 3 create the depression 38 with the depth D in the belt top surface 29.
  • the tip radius 34 is preferably at least 4 mm. In another way to prevent damage to the belt top surface 29 this surface can have a tear resistant coating.
  • the height of the bottom axis of rotation 8 above the belt top surface 29 is such that the depression 38 has a depth D of approximately 5 mm whereby the depth D is approximately similar or preferably greater than the tip height T so that a the cardboard piece 39 hooks behind the shoulder 33.
  • the resilient belt part 30 has a thickness that is more than 2 - 3 times the depth D of the depression or approximately 15 mm, although there might be circumstance in which there is an increased thickness.
  • the rotation speed of the inner drum 6 with the sorting tines 3 is such that the tips 34 do not move relative to the belt top surface 29.
  • the belt top surface 29 drives the rotation of the inner drum 6 although coupled drives for the sorting belt 13 and the drums 5,6 are also possible.
  • Figure 4 shows a further embodiment of sorting device whereby a sorting roll 41 has a metal cylinder 42 that rotates around an axis and that is covered with a thick flexible layer 43 of pararubber or a similar material.
  • the sorting tines 3 of the inner drum 6 press a depression in the flexible layer 43.
  • a belt 44 can transport paper sheets 37 or cardboard pieces 39 to the sorting roll 41.
  • the sorting tines 3 pick the cardboard pieces 39 up in the similar way as described in figure 3 and the sorting tines 3 do not pick paper sheets 37 up for the same reasons as described with figure 2 and the paper sheets 37 fall downwards from the sorting roll 41.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Sorting Of Articles (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Making Paper Articles (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP08007997A 2008-04-25 2008-04-25 Dispositif pour séparer papier et carton Withdrawn EP2111927A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP08007997A EP2111927A1 (fr) 2008-04-25 2008-04-25 Dispositif pour séparer papier et carton
AT09158744T ATE487546T1 (de) 2008-04-25 2009-04-24 Vorrichtung zum trennen von papier und karton
DK09158744.4T DK2111928T3 (da) 2008-04-25 2009-04-24 Indretning til at adskille papir og pap
DE602009000325T DE602009000325D1 (de) 2008-04-25 2009-04-24 Vorrichtung zum Trennen von Papier und Karton
EP09158744A EP2111928B1 (fr) 2008-04-25 2009-04-24 Dispositif pour séparer papier et carton

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08007997A EP2111927A1 (fr) 2008-04-25 2008-04-25 Dispositif pour séparer papier et carton

Publications (1)

Publication Number Publication Date
EP2111927A1 true EP2111927A1 (fr) 2009-10-28

Family

ID=39535258

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08007997A Withdrawn EP2111927A1 (fr) 2008-04-25 2008-04-25 Dispositif pour séparer papier et carton
EP09158744A Not-in-force EP2111928B1 (fr) 2008-04-25 2009-04-24 Dispositif pour séparer papier et carton

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP09158744A Not-in-force EP2111928B1 (fr) 2008-04-25 2009-04-24 Dispositif pour séparer papier et carton

Country Status (4)

Country Link
EP (2) EP2111927A1 (fr)
AT (1) ATE487546T1 (fr)
DE (1) DE602009000325D1 (fr)
DK (1) DK2111928T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2998494A1 (fr) * 2012-11-29 2014-05-30 Matthiessen Engineering Dispositif pour ameliorer le tri entre papiers et cartons

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725641A1 (fr) * 1994-10-14 1996-04-19 Lenoir Raoul Ets Procede et dispositif de tri d'un melange de materiaux
EP1291092A2 (fr) * 2001-09-07 2003-03-12 Grumbach GmbH & Co. KG Procédé et dispositif pour éliminer le carton d'un mélange de vieux papiers
EP1785200A1 (fr) 2005-11-14 2007-05-16 Wagensveld BV Dispositif pour séparer le papier et le carton

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725641A1 (fr) * 1994-10-14 1996-04-19 Lenoir Raoul Ets Procede et dispositif de tri d'un melange de materiaux
EP1291092A2 (fr) * 2001-09-07 2003-03-12 Grumbach GmbH & Co. KG Procédé et dispositif pour éliminer le carton d'un mélange de vieux papiers
EP1785200A1 (fr) 2005-11-14 2007-05-16 Wagensveld BV Dispositif pour séparer le papier et le carton

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2998494A1 (fr) * 2012-11-29 2014-05-30 Matthiessen Engineering Dispositif pour ameliorer le tri entre papiers et cartons

Also Published As

Publication number Publication date
DE602009000325D1 (de) 2010-12-23
DK2111928T3 (da) 2011-02-28
EP2111928B1 (fr) 2010-11-10
EP2111928A1 (fr) 2009-10-28
ATE487546T1 (de) 2010-11-15

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