EP1210981A1 - Dispositif et procédé de déchiquetage de produits industriels inutilisables, comme des pneus ou similaires - Google Patents

Dispositif et procédé de déchiquetage de produits industriels inutilisables, comme des pneus ou similaires Download PDF

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Publication number
EP1210981A1
EP1210981A1 EP00126235A EP00126235A EP1210981A1 EP 1210981 A1 EP1210981 A1 EP 1210981A1 EP 00126235 A EP00126235 A EP 00126235A EP 00126235 A EP00126235 A EP 00126235A EP 1210981 A1 EP1210981 A1 EP 1210981A1
Authority
EP
European Patent Office
Prior art keywords
shredding
unit
shredded
units
downstream
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Withdrawn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
EP00126235A
Other languages
German (de)
English (en)
Inventor
Fabio Cadenazzi
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.)
Chelverton Trading Ltd
Original Assignee
Chelverton Trading Ltd
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 Chelverton Trading Ltd filed Critical Chelverton Trading Ltd
Priority to EP00126235A priority Critical patent/EP1210981A1/fr
Publication of EP1210981A1 publication Critical patent/EP1210981A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C21/00—Disintegrating plant with or without drying of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/142—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with two or more inter-engaging rotatable cutter assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
    • B02C2201/04—Codes relating to disintegrating devices adapted for specific materials for used tyres

Definitions

  • the invention refers to an apparatus for shredding, or breaking into little pieces, industrial products which can no longer be used, such as tyres for means of transport in general, or similar.
  • Conventional apparatuses consist of a single shredding unit, with a pair of counter-rotating shafts, on which metal disks provided with shredding teeth are mounted. Although they do obtain a crude shredding of the industrial products, these conventional apparatuses are not able to reduce the products to be treated into very small fragments, nor to recover in full the basic materials contained therein.
  • One purpose of the invention is to perfect a method and achieve an associated apparatus which will allow to fragment into very small pieces, having the dimension of some decimillimetres approximately, no longer usable industrial products such as tyres for means of transport in general and motor vehicles in particular, which will allow to recover the materials contained therein, and which will be reliable and automated.
  • the apparatus for shredding no longer usable industrial products such as tyres or similar, according to the invention, comprises at least two shredding units, each provided with rotary shredding means, which are arranged in series to successively shred said industrial products, or the parts thereof which have already been shredded by the shredding unit upstream, and conveyor means able to transport the parts already shredded by each of said shredding units to the unit immediately downstream thereof.
  • the first two consist of units with two counter-rotating shafts, provided with shredding disks; a third is provided with four parallel shafts rotating in reciprocally opposite angular directions, wherein each shaft is provided with shredding disks and wherein a punched plate is positioned under said shafts to determine the size of the shredded material; and a fourth consists of a rotary drum grinder provided with a plurality of blades which are able to pass very close to corresponding fixed counterblades in order to tear away and split the rubber from any ferrous filaments.
  • the conveyor means comprise conveyor belts able to convey the shredded parts emerging from the lower part of each shredding unit towards the upper part of the subsequent shredding unit.
  • the apparatus according to the invention also provides: one or more deferrization units, able to separate the iron materials from the rest of the shredded pieces, a storage silo, one or more granulators, able to farther fragment the non-ferrous materials, and one or more vibrating screens, able to separate the shredded pieces according to size.
  • the method for shredding no longer usable industrial products comprises at least two shredding steps performed in series by at least two shredding units, each provided with rotary shredding means, a preliminary step of loading the industrial products into a first shredding unit, and one or more intermediate steps of transporting the shredded pieces from each shredding unit to the downstream shredding unit, by means of conveyor means.
  • a shredding apparatus 10 comprises a first shredding unit or station 11, into which the industrial products to be shredded are able to be loaded from above, by means of a first driven conveyor belt 12.
  • the shredding unit 11 comprises a pair of parallel shafts 13 and 15 (Figs. 3 and 4), driven to rotate in opposite angular directions.
  • a plurality of metal disks 16 and 17 are keyed onto each shaft 13 and 15, each provided with shredding teeth 18 and respectively 19.
  • Fixed counterblades 16a and 17a are interposed between the disks 16 and respectively 17 to increse the cutting and shredding effect of disks 16 and 17.
  • the shredding unit 11 has advantageously bigger dimensions than the following shredding units, because it has to perform the heavy work to rough the bulky material.
  • an extraction belt 14a with metal slats, is arranged, able to convey the shredded pieces towards a second driven conveyor belt 21.
  • a second shredding unit or station 20 (Figs. 1 and 2), identical to the first but advantageously smaller, is arranged downstream of the first to perform in sequence a second shredding step.
  • the second driven conveyor belt 21 is able to convey the shredded pieces, which are transported by the extraction belt 14a towards the upper part of the second shredding unit 20.
  • a third shredding unit or station 22 Downstream of the second shredding unit 20 there is a third shredding unit or station 22, able to perform a third shredding step.
  • the third driven conveyor belt 38 is able to convey the shredded pieces, which are transported by the extraction belt 14b, towards the upper part of the third shredding unit 22.
  • the latter unlike the first two shredding units 11 and 20, comprises four parallel rotary shafts 23, 24, 25 and 26 (Figs. 5 and 6), driven to rotate in reciprocally opposite angular directions.
  • a plurality of metal disks 27, 28, 29 and 30 are keyed onto each shaft 23, 24, 25 and 26, each one provided with shredding teeth 31, 32, 33 and respectively 34.
  • each outer disk 27 and 30 has four shredding teeth, 31, respectively 34, arranged offset with respect to each other by 90°, while each inner disk 28 and 29 has two shredding teeth 32, respectively 33, arranged on diametrically opposite sides.
  • a cradle 36 constituted by a punched plate provided with a plurality of through holes 37, which has the purpose to allow the shredded pieces smaller than the size of the holes 37 to fall down.
  • the punched plate 36 is shaped so as to define a lower compartment which thickness S is variable between about 1 and 2 cm, in accordance with the type of material to be shredded.
  • a 2-way extraction belt 14c which is selectively able to convey the shredded pieces towards a discharge belt 35, in the event the shredded material has to feed a furnace for the production of electric power, or towards a fourth driven conveyor belt 45, in the event the shredded material needs to be further shredded to reach a smaller granulometry.
  • a fourth shredding unit or station 40 Downstream of the third shredding unit 22 there is a fourth shredding unit or station 40, consisting of a grinder which comprises a rotary drum 41 provided with a plurality of metal elements, or cutting-knives, 42, which are able to cooperate, rotating, with two fixed elements, or counterblades, 43 and 44, to further shred the already shredded pieces arriving from the third shredding unit 22.
  • the cutting-knives 42 are provided to pass very close to the fixed counterblades 43 and 44, in order to tear away and split the rubber from any ferrous filaments.
  • a fourth driven conveyor belt 45 is able to convey the shredded pieces emerging from the lower part of the third shredding unit 22 towards the upper part of the fourth shredding unit 40.
  • a fifth driven conveyor belt 46 is able to convey the shredded pieces emerging from the lower part of the fourth shredding unit 40 towards the upper part of a storage silo 48.
  • first deferrization unit 49 of the over belt type and a second deferrization unit 50 of the CMT type, able to separate the ferrous material from the rest of the shredded pieces in a conventional manner.
  • Downstream of the storage silo 48 the following are arranged in series: two granulators 51 and 52, of a conventional type, which contribute to further fragment the non-ferrous materials arriving from the storage silo 48; four vibrating screens 53, 54, 55 and 56, also of a conventional type, which separate the pieces shredded by the units upstream according to size, and a series of other deferrization units 57, of the DMC type.
  • the apparatus 10 also comprises two cooling assemblies 58 and 59, associated respectively with the fourth shredding unit 40 and the storage silo 48, to adequately cool the shredded material contained therein.
  • the method for shredding no longer usable industrial products by means of the apparatus 10 as described heretofore comprises a step of loading the industrial products to be shredded into the first shredding unit 11, a first shredding step by means of the first shredding unit 11, a possible second shredding step by means of the second shredding unit 20, and a third shredding step by means of the third shredding unit 22.
  • the second shredding step can be eliminated, and the method passes directly from the first to the third shredding step.
  • a further step is then provided to reduce them into grains, and a subsequent step of final deferrization, in the course of which any residual ferrous parts, possibly included in the shredded parts, are eliminated.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP00126235A 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de produits industriels inutilisables, comme des pneus ou similaires Withdrawn EP1210981A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00126235A EP1210981A1 (fr) 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de produits industriels inutilisables, comme des pneus ou similaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00126235A EP1210981A1 (fr) 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de produits industriels inutilisables, comme des pneus ou similaires

Publications (1)

Publication Number Publication Date
EP1210981A1 true EP1210981A1 (fr) 2002-06-05

Family

ID=8170541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126235A Withdrawn EP1210981A1 (fr) 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de produits industriels inutilisables, comme des pneus ou similaires

Country Status (1)

Country Link
EP (1) EP1210981A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5411216A (en) * 1992-12-11 1995-05-02 O'keefe; Dennis Tire shredder and process for shredding tires
EP0671214A1 (fr) * 1994-03-10 1995-09-13 SATRIND S.r.l. Déchiqueteur, comportant des coups rotatifs, muni de plaques non-perforées coaxiales par rapport aux corps rotatifs
US5510076A (en) * 1994-12-02 1996-04-23 Brooks; Thomas W. Method and apparatus of recycling previously used agricultural plastic film mulch
US5588600A (en) * 1995-06-07 1996-12-31 Perfido; Kenneth F. Process and apparatus for making crumb rubber from vehicle tires
US5904305A (en) * 1997-05-14 1999-05-18 Kaczmarek; Win F. Rubber reducing and recycling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5411216A (en) * 1992-12-11 1995-05-02 O'keefe; Dennis Tire shredder and process for shredding tires
EP0671214A1 (fr) * 1994-03-10 1995-09-13 SATRIND S.r.l. Déchiqueteur, comportant des coups rotatifs, muni de plaques non-perforées coaxiales par rapport aux corps rotatifs
US5510076A (en) * 1994-12-02 1996-04-23 Brooks; Thomas W. Method and apparatus of recycling previously used agricultural plastic film mulch
US5588600A (en) * 1995-06-07 1996-12-31 Perfido; Kenneth F. Process and apparatus for making crumb rubber from vehicle tires
US5904305A (en) * 1997-05-14 1999-05-18 Kaczmarek; Win F. Rubber reducing and recycling system

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