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EP1210980A1 - Dispositif et procédé de déchiquetage de déchets urbains solides - Google Patents

Dispositif et procédé de déchiquetage de déchets urbains solides Download PDF

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Publication number
EP1210980A1
EP1210980A1 EP00126236A EP00126236A EP1210980A1 EP 1210980 A1 EP1210980 A1 EP 1210980A1 EP 00126236 A EP00126236 A EP 00126236A EP 00126236 A EP00126236 A EP 00126236A EP 1210980 A1 EP1210980 A1 EP 1210980A1
Authority
EP
European Patent Office
Prior art keywords
shredding
unit
assemblies
assembly
screen
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Withdrawn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
EP00126236A
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 EP00126236A priority Critical patent/EP1210980A1/fr
Publication of EP1210980A1 publication Critical patent/EP1210980A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
    • B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone

Definitions

  • the invention concerns an apparatus and a method for shredding, or breaking into little pieces, solid urban waste, and in particular the non-recycling dry fraction thereof, produced by normal domestic activities.
  • the state of the art includes apparatuses consisting of a single shredding or grinding unit, of small dimensions, able to be installed in the house, to shred the solid waste as it is produced. Such apparatuses have a very limited power and productive capacity, however, and are not suitable to shred large daily quantities of waste.
  • the state of the art also includes industrial-type apparatuses, also based on a single shredding unit, which comprises a pair of counter-rotating shafts, on which metal disks provided with shredding teeth are mounted.
  • This second type of conventional apparatuses have the disadvantage, however, that they only obtain a crude shredding of the waste, and are not therefore able to reduce the waste into very small fragments, suitable for subsequent treatment.
  • One purpose of the invention is to perfect a method and achieve an associated apparatus which will allow to fragment the solid urban waste into very small pieces, in the range of some cubic centimetres, and that at the same time will have a considerable productive capacity, around several tonnes per hour.
  • the apparatus for shredding solid urban waste comprises at least a first shredding unit which in turn comprises at least two shredding assemblies arranged one above the other so that the waste shredded by the upper shredding assembly goes directly, through gravity, into the lower shredding assembly, and wherein each of said shredding assemblies is provided with rotary shredding means.
  • said first shredding unit also comprises a third shredding assembly arranged below the other shredding assemblies.
  • Each shredding assembly comprises a pair of parallel shafts, driven to rotate in opposite angular directions, onto each of which a plurality of metal disks are keyed, each provided with shredding teeth.
  • a screen is arranged downstream of the first shredding unit to select the shredded parts which are less than a determined size.
  • a second shredding unit is arranged downstream of the rotary screen and comprises a grinder with a rotary drum.
  • the method for shredding solid urban waste provides a step of loading the waste to be shredded into a first shredding unit and a first shredding step, which in turn comprises at least two shredding sub-steps, performed in series by the at least two shredding assemblies arranged one above the other.
  • a shredding apparatus 10 comprises a first shredding unit or station 11, into which the solid urban waste to be shredded is able to be loaded from above, by means of a first driven conveyor belt 12.
  • the shredding unit 11 comprises three shredding assemblies 13, 14 and 15 (Figs. 1 and 2), arranged one above the other so that the waste shredded by the upper shredding assembly goes directly, through gravity, into the lower shredding assembly.
  • Each shredding assembly 13, 14 and 15 comprises a pair of parallel shafts 17 and 18 (Figs. 3 and 4), driven to rotate in opposite angular directions.
  • a plurality of metal disks 19 and 20 are keyed onto each shaft 17 and 18, each provided with shredding teeth 19a and respectively 20a.
  • Fixed counterblades 16 are interposed between the disks 19 and 20 to increse the cutting and shredding effect thereof.
  • the shafts 17 and 18 of the upper 13 and lower 15 shredding assemblies are all parallel, while the shafts 17 and 18 of the intermediate shredding assembly 14 are arranged offset by 90° with respect to the others. This contributes to further shred the solid waste into small pieces.
  • the upper shredding assembly 13 is bigger than the other two shredding assemblies 14 and 15, because it has to perform the heavy work to rough the bulky material.
  • the shredding unit 11 also comprises a hopper 21, arranged above the upper shredding assembly 13, and an extraction belt 22, with metal slats, arranged in the lower part to convey the shredded waste towards a second driven conveyor belt, which in turn is able to transport it to a rotary screen 25.
  • the second shredding unit 30 consists of a grinder which comprises a rotary drum 31 (Figs. 5 and 6) provided with a plurality of metal elements, or cutting-knives, 32, which are able to cooperate, rotating, with two fixed elements 33 and 34, to further shred the pieces rejected by the rotary screen 25.
  • a fifth driven conveyor belt 35 is able to convey towards a container 36 both the shredded pieces arriving from the conveyor belt 26, and also those which emerge from the lower part of the second shredding unit 30.
  • deferrization unit 39 of the over belt type, which is able to separate the ferrous materials from the rest of the shredded pieces, in a conventional manner.
  • the method for shredding solid urban waste by means of the apparatus 10 as described heretofore comprises a step of loading the waste to be shredded into the hopper 21 of the first shredding unit 11 and a first shredding step performed in said first shredding unit 11.
  • the first shredding step comprises three shredding sub-steps, performed in series by the three shredding assemblies 13, 14 and 15.
  • the method comprises a subsequent screening step, which is performed by the rotary screen 25, and a second shredding step for the pieces which have been rejected during said screening step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
EP00126236A 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de déchets urbains solides Withdrawn EP1210980A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00126236A EP1210980A1 (fr) 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de déchets urbains solides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00126236A EP1210980A1 (fr) 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de déchets urbains solides

Publications (1)

Publication Number Publication Date
EP1210980A1 true EP1210980A1 (fr) 2002-06-05

Family

ID=8170542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00126236A Withdrawn EP1210980A1 (fr) 2000-12-01 2000-12-01 Dispositif et procédé de déchiquetage de déchets urbains solides

Country Status (1)

Country Link
EP (1) EP1210980A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007034038A1 (fr) * 2005-09-19 2007-03-29 Tana Oy Dispositif de broyage et rotor pour dispositif de broyage

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2158868A1 (de) * 1971-11-27 1973-06-07 Claas Maschf Gmbh Geb Maschine zum zerkleinern von sperrigen abfaellen
US3931935A (en) * 1974-06-24 1976-01-13 Holman Merle A Method of and apparatus for cutting vehicle tires
US4121524A (en) * 1975-10-31 1978-10-24 Fritz Aurel Goergen Method of and apparatus for treating refuse
US4180004A (en) * 1977-02-18 1979-12-25 Tire-Gator, Inc. Methods of handling waste including rubber tires
US5635224A (en) * 1994-12-02 1997-06-03 Brooks; Thomas W. Apparatus for recycling previously used agricultural plastic film much
FR2785205A1 (fr) * 1998-10-30 2000-05-05 Phenix Ind Dispositif de broyage de dechets
EP1055458A1 (fr) * 1999-05-17 2000-11-29 Kotobuki Sangyo Kabushiki Kaisha Procédé et dispositif de mise au rebut de déchets

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2158868A1 (de) * 1971-11-27 1973-06-07 Claas Maschf Gmbh Geb Maschine zum zerkleinern von sperrigen abfaellen
US3931935A (en) * 1974-06-24 1976-01-13 Holman Merle A Method of and apparatus for cutting vehicle tires
US4121524A (en) * 1975-10-31 1978-10-24 Fritz Aurel Goergen Method of and apparatus for treating refuse
US4180004A (en) * 1977-02-18 1979-12-25 Tire-Gator, Inc. Methods of handling waste including rubber tires
US5635224A (en) * 1994-12-02 1997-06-03 Brooks; Thomas W. Apparatus for recycling previously used agricultural plastic film much
FR2785205A1 (fr) * 1998-10-30 2000-05-05 Phenix Ind Dispositif de broyage de dechets
EP1055458A1 (fr) * 1999-05-17 2000-11-29 Kotobuki Sangyo Kabushiki Kaisha Procédé et dispositif de mise au rebut de déchets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007034038A1 (fr) * 2005-09-19 2007-03-29 Tana Oy Dispositif de broyage et rotor pour dispositif de broyage

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