WO2000073050A1 - Systeme d'alimentation en materiel pour des machines de traitement de dechets urbains solides - Google Patents

Systeme d'alimentation en materiel pour des machines de traitement de dechets urbains solides Download PDF

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Publication number
WO2000073050A1
WO2000073050A1 PCT/IB2000/000686 IB0000686W WO0073050A1 WO 2000073050 A1 WO2000073050 A1 WO 2000073050A1 IB 0000686 W IB0000686 W IB 0000686W WO 0073050 A1 WO0073050 A1 WO 0073050A1
Authority
WO
WIPO (PCT)
Prior art keywords
feeder
bight
scoop
piston
flat bottom
Prior art date
Application number
PCT/IB2000/000686
Other languages
English (en)
Inventor
Carlo Gonella
Original Assignee
Vm Press S.R.L.
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 Vm Press S.R.L. filed Critical Vm Press S.R.L.
Priority to AU46024/00A priority Critical patent/AU4602400A/en
Publication of WO2000073050A1 publication Critical patent/WO2000073050A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/08—Accessory tools, e.g. knives; Mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/08—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable
    • B30B11/10—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with moulds carried by a turntable intermittently rotated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/04—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams
    • B30B9/042—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using press rams co-operating with casings mounted on a movable carrier, e.g. turntable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/30—Presses specially adapted for particular purposes for baling; Compression boxes therefor
    • B30B9/3078—Presses specially adapted for particular purposes for baling; Compression boxes therefor with precompression means

Definitions

  • This invention is concerned with a material feeder for processing machines for mixed wastes, more particularly for solid city waste, also known as SCW.
  • SCW is a material having highly variable properties, in respect of its nature (organic or inert), of its consistence and of its size. In any case, SCW always has a high humidity. SCW is usually disposed of in dumps or in incinerators, after reducing its humidity content below 20%, and usually after several sorting steps, e.g. for metal separation and/or grading, and others. Today, these operations are generally carried out in high-cost, high-bulk installations, and with processing times extending over several days.
  • IT-A-1256197 filed on 18-12-1992, with title "Machine for processing humid material, particularly for recycling solid city waste”, provides for pressing or squeezing, under high pressure, individual portions of material in a perforated cylinder, so that a consider- able proportion of its humid content is squeezed out of its perforations, while the bulk of the dry material is strongly reduced. The material is then expelled from the cylinder.
  • the machine of IT-A-1256197 comprises a number of perforated cylinders, which are all supported on a drum. The drum is rotated step-by-step, so that each cylinder is first brought in alignment with a material feeding auger, then to an extrusion station where the material is squeezed, and finally to an expulsion station.
  • the machine of IT-A-1256197 performs an efficient separation, compaction and drying of city waste, but the feeding of material by means of an auger has turned out to be inadequate, because the material, being humid and of a changeable nature, as is typical in city waste, becomes clogged and causes locking of the auger, or builds bridges above the auger, thereby requiring frequent action by the staff in order to restore normal feeding.
  • the main object of the invention is therefore to provide a material feeder for processing machines for solid city waste, which overcomes the drawbacks of the auger feeder.
  • Fig. 1 is a front view of a drum of a waste processing machine
  • Fig. 2 is a view in logitudinal cross-section of a material feeder according to the invention, suitable for cooperation with the machine of Fig. 1;
  • Fig. 3 is a view of the same feeder, in transverse cross-section made along line III- III of Fig. 2;
  • Fig. 4 is partial view, similar to Fig. 3, for a modification of the above ambodiment of the invention.
  • a waste processing machine according to IT-A-1 256 197 comprises a stationary support bed 10 which carries a drum comprising two parallel, disk-shaped walls 12, 14, joined by an internal framework 16, and rotatable around a horizontal shaft 18.
  • Drum 12-16 has three equidistant passages, in which respec- tive perforated cylinders such as 20 are mounted.
  • the drum is rotated step-by-step, so that each perforated cylinder 20 is brought into alignment with a feeding station 22, where it is loaded with material requiring drying and compaction.
  • the perforated cylinder is brought in alignment with a pressing station 24, where a piston 26 squeezes the material and extrudes its humid part through the perforations of cylinder 20.
  • the perforated cylinder reaches a delivery station 28, where the material is expelled from the cylinder by another piston 30.
  • the feeding station of the machine of Fig. 1 is provided with a feeder device according to the invention.
  • the feeder device comprises a hopper 32 having a horizontal outlet 34 which is joined, by means of a flange 36, to an opening in a partition 38 of the stationary bed 10, so that each perforated cylinder 20 becomes aligned in turn with outlet 34.
  • Hopper 32 is leads to a flat, inclined bottom surface 42, which ends into a semicircular bight 44.
  • a feeder presser is received, which comprises a feeder piston 46, driven by a hydraulic actuator 48.
  • Piston 46 has a cylindrical skirt 50, slidably matching bight seat 44. Piston 46 is aligned with outlet 36, so that it can push the material into perforated cylinder 20.
  • hopper 32 has an opening where a slide 52, driven by hydraulic actuators such as 54, is slidable at right angles to piston 46 along the inclined surface 42.
  • Slide 52 has a forward, concave scoop 56, which, when approached to bight 44, defines a cylindrical area for slidable reception of feeding piston 46.
  • a second flat scoop 58 is provided, which is set back with respect to concave scoop 56.
  • the above-disclosed feeder should operate in step with drum 12-14 of the processing machine, so that one work cycle is performed at each step of the drum.
  • both piston 46 and slide 52 are withdrawn to the positions shown on Figs. 2 and 3. Initially, slide 52 is moved forward to the position shown in dashed lines on Fig. 3.
  • the sharp-edged, concave scoop 56 crunches and shears the material lying on inclined bottom 42, crushing any large objects such as branches, sticks and frames made of wood, synthetic material or metal, containers made of plastic or metal sheet, and others, so that a portion of material, partly compacted, is eventually confined in a cylindrical area near bight 44.
  • flat scoop 58 subjects the adjacent material to a preliminary, less thorough compaction, due to the lower compression ratio.
  • both piston 46 and slide 52 are withdrawn, thus allowing the material above them to fall to the bottom of the hopper, in preparation for the next cycle.
  • the structure of the feeder is capable of applying considerable forces, such that it will crush even rigid objects such as sticks, boxes, pots, cans, and others, which are likely to be present, together with more common materials such as paper, envelopes, food waste, and garbage generally. While an auger may give rise to clogging, with the feeder of the invention any flexible object, such as a sheet of plastic material, which should, by example, creep between the inclined bottom and the slide, is positively torn by the action of the scoop.
  • the preliminary crunching made by the flat scoop which is capable of strong forces, due to its strength and to the power of the hydraulic actuators, will break and crumble any bridge-like structures that may occasionally be built by random interlacing of rods, branches, and the like, which, if not broken, would prevent the normal flow of material to the bottom.
  • Fig. 4 is quite similar to the embodiment of Figs. 2 and 3, and is distinguished only for the provision of two blades of hard metal 60 and 62, the former being attached to the upper edge of concave scoop 56, the latter to the upper edge of bight 44.
  • bight 44 is deeper than in the first embodiment, so that concave scoop 56 can approach with partial penetration in the bight, as shown in dotted lines, so that blades 60 and 62 can cooperate with a shearing action, in order to cut the material more positively, though with less wear of the scoop.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Refuse Collection And Transfer (AREA)

Abstract

L'invention concerne une trémie (32) possédant un fond plat (42) terminé par une anse (44) équipée d'une sortie latérale. Une glissière (52) pourvue d'un auget pousseur (56) peut coulisser le long du fond plat en direction transversale par rapport à l'anse semi-circulaire et être manoeuvrée par des actionneurs hydrauliques (54). Un piston d'alimentation (46) peut se déplacer le long de l'anse semi-circulaire en direction de la sortie susmentionnée, le piston étant manoeuvré par un actionneur hydraulique (48).
PCT/IB2000/000686 1999-06-01 2000-05-22 Systeme d'alimentation en materiel pour des machines de traitement de dechets urbains solides WO2000073050A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46024/00A AU4602400A (en) 1999-06-01 2000-05-22 Material feeder for processing machines for solid city waste

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITTO990460 IT1308068B1 (it) 1999-06-01 1999-06-01 Alimentatore di materiale per macchine di trattamento di rifiutisolidi urbani
ITTO99A000460 1999-06-01

Publications (1)

Publication Number Publication Date
WO2000073050A1 true WO2000073050A1 (fr) 2000-12-07

Family

ID=11417856

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2000/000686 WO2000073050A1 (fr) 1999-06-01 2000-05-22 Systeme d'alimentation en materiel pour des machines de traitement de dechets urbains solides

Country Status (4)

Country Link
EP (1) EP1057618A1 (fr)
AU (1) AU4602400A (fr)
IT (1) IT1308068B1 (fr)
WO (1) WO2000073050A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20040112A1 (it) * 2004-02-26 2004-05-26 Vm Press Srl Alimentatore di materiale per macchine per la compattazione di rifiuti
EP1655127A1 (fr) * 2004-11-03 2006-05-10 San Ford Machinery Co., Ltd. compresseur de débris de bois

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572018A1 (fr) * 1984-10-19 1986-04-25 Comdec Installation de compactage de dechets equipee de deux presses jumelees
FR2590841A1 (fr) * 1985-12-04 1987-06-05 Chartres Etu Realisa Oleo Hydr Appareil de compactage en boudin allonge d'une matiere en particules
DE4105138A1 (de) * 1991-02-20 1992-08-27 Andre Groene Vorrichtung zum verdichten von abfall
DE19526342A1 (de) * 1995-07-19 1997-01-23 Nendel Klaus Prof Dr Ing Verfahren und Vorrichtung zum Herstellen von hochverdichteten formbeständigen zylindrischen Briketts aus halmförmigem Gut
EP0888873A1 (fr) * 1997-07-02 1999-01-07 FM-Racine Hydraulik AG Presse pour briquettes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572018A1 (fr) * 1984-10-19 1986-04-25 Comdec Installation de compactage de dechets equipee de deux presses jumelees
FR2590841A1 (fr) * 1985-12-04 1987-06-05 Chartres Etu Realisa Oleo Hydr Appareil de compactage en boudin allonge d'une matiere en particules
DE4105138A1 (de) * 1991-02-20 1992-08-27 Andre Groene Vorrichtung zum verdichten von abfall
DE19526342A1 (de) * 1995-07-19 1997-01-23 Nendel Klaus Prof Dr Ing Verfahren und Vorrichtung zum Herstellen von hochverdichteten formbeständigen zylindrischen Briketts aus halmförmigem Gut
EP0888873A1 (fr) * 1997-07-02 1999-01-07 FM-Racine Hydraulik AG Presse pour briquettes

Also Published As

Publication number Publication date
AU4602400A (en) 2000-12-18
EP1057618A1 (fr) 2000-12-06
ITTO990460A1 (it) 2000-12-01
IT1308068B1 (it) 2001-11-29

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