EP0482566B1 - Crible pour séparer des matériaux de poids différents - Google Patents

Crible pour séparer des matériaux de poids différents Download PDF

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Publication number
EP0482566B1
EP0482566B1 EP91117964A EP91117964A EP0482566B1 EP 0482566 B1 EP0482566 B1 EP 0482566B1 EP 91117964 A EP91117964 A EP 91117964A EP 91117964 A EP91117964 A EP 91117964A EP 0482566 B1 EP0482566 B1 EP 0482566B1
Authority
EP
European Patent Office
Prior art keywords
screen
tongues
openings
controlled separation
materials according
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.)
Expired - Lifetime
Application number
EP91117964A
Other languages
German (de)
English (en)
Other versions
EP0482566A2 (fr
EP0482566A3 (en
Inventor
Angelo Toschi
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.)
Iperfin SpA
Original Assignee
Iperfin SpA
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Filing date
Publication date
Application filed by Iperfin SpA filed Critical Iperfin SpA
Publication of EP0482566A2 publication Critical patent/EP0482566A2/fr
Publication of EP0482566A3 publication Critical patent/EP0482566A3/de
Application granted granted Critical
Publication of EP0482566B1 publication Critical patent/EP0482566B1/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
    • 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
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/469—Perforated sheet-like material
    • 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
    • B07B13/08—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to weight

Definitions

  • the above invention relates to a sieve for the targeted separation of materials of different weights, the sieving taking place depending on the weight of the materials to be sieved.
  • the invention relates in particular to a sieve for sorting different materials, e.g. are contained in crushed rubble.
  • the pre-sorted and sifted material can be used as a substitute for natural aggregates, eg for the production of sub-floors, as a filler or for the production of concrete mixes with low strength.
  • the known sieves or plate-shaped vibrating sieves with one or more sieving stations, as well as with rotatably mounted sieves mostly consist of sheets or grids which are equipped continuously or with successive sectors. These sectors have screen openings of different sizes.
  • the larger openings define the maximum grain size both for the heavy debris components (concrete parts, brick, glass, tiles, marble pieces) that form the actual additives, as well as for the lighter materials (paper, cardboard, wood, plastic parts), the undesirable admixtures and influence the value in use of the recovered supplements.
  • the recovered surcharges it is necessary to reduce the proportion of light material as much as possible. This is currently only possible by manual selection or by using special sieves that are operated with suction air or water flooding.
  • a manual selection requires the constant presence of several helpers who work in a dust-laden, unhealthy environment.
  • the selection by suction effect requires the use of very space-consuming and expensive devices for generating the necessary negative pressure and for separating the large amounts of dust sucked in. With such devices the energy requirement is also very high.
  • the removal of the light materials due to their floatability in a water bath also requires the use of very space-consuming and expensive devices for the circulation of the water bath; a very large amount of water is necessary, which is not always available.
  • the separation of the lighter components in a water bath also leads to problems of environmental protection, and a large energy requirement is also required to operate a water bath.
  • Another disadvantage of the known viewing devices is that it is not possible to make the screen openings as large as desired, e.g. would be the case if heavy pieces of rubble could be viewed with increasing grain size without having to accept an undesired increase in light parts of the rubble to be processed.
  • a heavy material separator is known in which the mixed material slides over a compartment made of resilient wires, the heavy parts such as stones or iron parts falling through the resilient thin rods or bristles while all lighter parts slide over them .
  • the fan is followed by a vibrating conveyor trough, whereby sorting according to grain size is not carried out.
  • the manufacture of the lamella-like diaphragms that over the to be covered openings of the screen are a simple and inexpensive solution, the screens can be easily attached to the screen, the screens can also be advantageously introduced in a large-scale tarpaulin or ceiling made of elastic material.
  • Slat-like panels with optimal elasticity and operational reliability can be created by using flexible, joined rubber layers. Reliable opening and closing operations of the lamella diaphragm can thereby be achieved and tears at the outer ends of the lamella can be avoided by providing the lamellae of the proposed diaphragms with slots which extend from the center of the diaphragm to the outer edges of the screen openings.
  • Sorting out the smaller pieces of debris and reducing the weight of the panel and thus shortening the closing time of the lamellae is possible by incorporating a central opening in the panel.
  • the flexible, slat-like covers have a material thickness between 6 and 12 mm, advantageously 10 mm, and the central opening of the aperture consisting of slats is one Diameter between 30 and 60 mm, advantageously 50 mm.
  • the elasticity of the lamellae is advantageously influenced by the fact that the thickness of the material forming the lamellae of the diaphragm decreases continuously or in steps from the outside of the diaphragm to the center of the diaphragm.
  • the main advantages that can be achieved with the invention are that the sieving is carried out using automatically adjusting openings depending on the weight of the protective parts to be sieved, ie there is a sieving process, ordered according to different grain sizes, for heavy and light materials the ability to create material piles that have only a few small parts made of light material. This means that the surcharges are available for the production of more profitable materials.
  • the classification into different grain sizes is achieved according to the invention in that the elasticity of the lamellae of the openings in the diaphragms is used in a suitable manner. It is thus possible to dispense with sorting processes which previously had to be carried out by hand, and it is also possible to dispense with known devices for classifying by means of suction air or water flushing. Due to the sieve devices designed according to the invention, a The grain size for heavy parts can be increased beyond the values that could previously be sorted without this leading to a larger proportion and larger dimensions of the light material in the screened product.
  • the reference numeral 1 represents a sheet or a wire screen which is divided into zones 2 to 5.
  • zones 2 to 5 square openings are provided, which have increasing size.
  • Zone 5 is formed from smooth sheet metal.
  • the openings 6 of zone 2 have, for example Dimensions of 40 x 40 mm, the openings of zone 3 dimensions of 70 x 70 mm and the larger openings 8 of zone 4 dimensions of 150 x 150 mm.
  • at least some of the openings of the latticework 1 of the screen are covered by elastic screens 10.
  • zone 4 which has larger openings 8, for example by gluing, is provided with a plate or ceiling 9 made of flexible material, for example rubber, with screens.
  • the elastic plate could also consist of plastic, synthetic rubber, metal or elastic composite materials.
  • Each plate 9 receives the aperture formed by lamellae 10, which is arranged above the associated opening 8.
  • the screens 10 are formed by elastic lamellae 11, which are separated from one another by slots or incisions 12. In the example shown, the slots extend radially from the center of the plate to the edges of the openings 8 of the underlying latticework 1.
  • the diaphragms 10, which cover the openings 8, form sieve openings with elastically operable openings which are actuated depending on the weight of the material to be sieved .
  • the openings 8 have a side A of 150 mm.
  • the fins 11 delimit a central opening 13 with a diameter B of 50 mm and have a constant thickness of 10 mm.
  • the elasticity of the slats can be determined by different thicknesses of the slat material, e.g. can be achieved by reducing the thickness of the lamellae from the inside to the outside. An even decrease in thickness, e.g. 5, or a stepped decrease in thickness or the use of multilayer slats, as shown in Fig. 6, may also be recommended.
  • the stream 15 of the previously crushed rubble material is shown with dashed lines and is fed via a transport device 17. 2, 3 and 4, the pieces of debris to be viewed are shown with reference number 16.
  • the sieve device according to the invention can also be designed as a multi-stage sieve or as a rotary sieve using perforated or lattice-like plates which are arranged in a single piece or in several stages. Any vibrators, which have not been shown, can be used as additional devices Find.
  • the operation of the screening device according to the invention is as follows:
  • the smaller, lightweight materials also fall through these openings formed components.
  • the heavier components 16 with a grain size that is larger than 70 mm but smaller than 120 mm (FIGS. 3 and 4) fall through the corresponding screen 10.
  • the lamellae 11 of the screen 10 become down deflected and the corresponding debris components fall through the screening device.
  • the larger pieces of protective material slide over the previous panels and move over the sieve in the direction of arrow F.
  • the lighter components which have dimensions larger than 70 mm, for example components made of plastic, as shown in Fig. 3 with a solid line, are too light in weight to close the slats of the panel deform, therefore these light components slide freely over the screens 10 and leave the screen in the direction of arrow F.
  • the heavy components in the sorted rubble material have a maximum grain size of approx. 120 mm; lighter components have a maximum grain size of less than 70 mm, as shown in the example. Providing viewing openings at the beginning of the classifier that are smaller than the openings of the following lamella covers, these lamellae determine the maximum grain size for lighter materials.
  • closed screens 10a could also be provided, i.e. Panels with lamellae 11a, which completely cover the sieve opening and have no central opening.
  • the screens 10 could also consist of individual assemblies which are formed by plates or strip-like structures which are to be attached individually to the screen.
  • the through openings 8 of the sieve can have different shapes.
  • these openings can be triangular, square, rectangular, oval, hexagon or a circle.
  • these slats 11 are provided with circular punchings 100. These punched-outs 100 can have constant or variable diameters. Furthermore, the circular openings 100 can vary in diameter, to adapt the elasticity and restoring force of the slats 11 to the properties of the material to be viewed.

Landscapes

  • Combined Means For Separation Of Solids (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cyclones (AREA)
  • Paper (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (7)

  1. Crible, pour la séparation ciblée de matériaux avec un fond de criblage, dans les ouvertures de passage de matériau duquel font saillie plusieurs languettes (11) déformables élastiquement, caractérisé en ce que
    - les ouvertures de passage de matériaux (8) sont recouvertes par des plaques (9) en matériau plat déformable élastiquement et
    - en ce que les plaques (9) présentent au moins deux entailles (12) sensiblement diagonales pour former les languettes (11),
    - de façon que ces languettes (11) cèdent au matériau à trier et passant sur celles-ci en fonction du poids de celui-ci et libèrent les ouvertures de passage de matériau au moins partiellement.
  2. Crible pour la séparation ciblée de matériaux selon la revendication 1, caractérisé en ce les plaques (9) présentent une ouverture (13) ménagée au centre.
  3. Crible pour la séparation ciblée de matériaux selon la revendication 1, caractérisé en ce que les plaques (9) sont pourvues d'ouvertures (100) et/ou de fentes (101) pour agir sur 1'élasticité des languettes (11).
  4. Crible pour la séparation ciblée de matériaux selon l'une des revendications 1 à 3, caractérisé en ce que la plaque élastique (9) a une épaisseur comprise entre 6 et 12 mm, avantageusement de 10 mm, et que l'ouverture centrale (13) a un diamètre compris entre 30 et 60 mm, avantageusement de 50 mm.
  5. Crible pour la séparation ciblée de matériaux selon l'une des revendications 1 à 4, caractérisé en ce que l'épaisseur du matériau formant les languettes (11) diminue continuellement depuis le côté extérieur vers le milieu de la plaque (9).
  6. Crible pour la séparation ciblée de matériau selon la revendication 5, caractérisé en ce que l'épaisseur du matériau constituant les languettes (11) diminue graduellement depuis le côté extérieur vers le milieu.
  7. Crible pour la séparation ciblée de matériaux selon l'une des revendications 1 à 6, caractérisé en ce que les ouvertures de passage de matériau (8) du crible ont une forme triangulaire, carrée, rectangulaire, ovale, circulaire ou hexagonale.
EP91117964A 1990-10-24 1991-10-22 Crible pour séparer des matériaux de poids différents Expired - Lifetime EP0482566B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT02186290A IT1244077B (it) 1990-10-24 1990-10-24 Vaglio per la classificazione di materiali di diverso peso specifico
IT2186290 1990-10-24
CA002059863A CA2059863C (fr) 1990-10-24 1992-01-22 Tamis pour le criblage de composantes ayant differentes dimensions et densites

Publications (3)

Publication Number Publication Date
EP0482566A2 EP0482566A2 (fr) 1992-04-29
EP0482566A3 EP0482566A3 (en) 1992-09-16
EP0482566B1 true EP0482566B1 (fr) 1996-05-08

Family

ID=25674934

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91117964A Expired - Lifetime EP0482566B1 (fr) 1990-10-24 1991-10-22 Crible pour séparer des matériaux de poids différents

Country Status (9)

Country Link
US (1) US5205418A (fr)
EP (1) EP0482566B1 (fr)
AT (1) ATE137688T1 (fr)
CA (1) CA2059863C (fr)
DE (1) DE59107788D1 (fr)
DK (1) DK0482566T3 (fr)
ES (1) ES2089086T3 (fr)
GR (1) GR3020534T3 (fr)
IT (1) IT1244077B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2737982B1 (fr) * 1995-08-23 1998-12-31 Boudet Daniel Dispositif de tri de recipients, notamment de bouteilles, selon leur poids et leur dimension
ITMI20021137A1 (it) * 2002-05-24 2003-11-24 Pescale S P A Vaglio di separazione per impianti di trattamento di macerie ed impianto contenente detto stadio di separazione
EP1716936A1 (fr) * 2005-04-26 2006-11-02 Manuel Lindner Dispositif de séparation de matières lourdes

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1309196A (en) * 1919-07-08 Puanoqraph co
US374153A (en) * 1887-11-29 Thomas hiatt
US1082612A (en) * 1912-10-01 1913-12-30 Lawrence William Smith Fruit-grading machine.
US1444195A (en) * 1920-03-04 1923-02-06 Roberts & Schaefer Company Process of screening coal
DE491488C (de) * 1928-02-24 1930-02-13 Fried Krupp Grusonwerk Akt Ges Vorrichtung zum Ausscheiden von spezifisch schwereren Fremdkoerpern aus Schuettgut
DE918968C (de) * 1952-08-28 1954-10-07 Josef Vogel Obst- und Fruechte-Sortiermaschine
US3285413A (en) * 1964-03-23 1966-11-15 Selector S Aggregates Co Ltd Screen apparatus
US3495708A (en) * 1967-05-20 1970-02-17 Maruhiro Giken Seisakusho Kk Apparatus for automatically sorting spherical and cylindrical articles
US3494708A (en) * 1968-04-22 1970-02-10 Ritter Pfaudler Corp Separable blade agitator
FR2142580A1 (en) * 1971-06-21 1973-02-02 Barbet Rene Weight actuated grader - with double lever escapement for swinging cups
DE2701307B1 (de) * 1977-01-14 1978-05-03 Schenck Ag Carl Lochsiebboden fuer Schwingsiebe
FR2384557A1 (fr) * 1977-03-21 1978-10-20 Besnard Germain Machine a calibrer les produits alimentaires
SU835346A1 (ru) * 1979-07-31 1981-06-07 Киевское Специальное Проектно-Конструк-Topckoe Бюро Всесоюзного Объединения"Союзсортсемовощ" Машина дл очистки кочанов капусты
NZ197904A (en) * 1981-07-31 1985-03-20 N B Macdonald Engineering Ltd Weight grading conveyor:magnetic control of cup dumping
US4585126A (en) * 1983-10-28 1986-04-29 Sunkist Growers, Inc. Method and apparatus for high speed processing of fruit or the like
DE8715942U1 (de) * 1987-12-02 1988-01-28 Rudnick + Enners Maschinen- und Anlagenbau GmbH, 57642 Alpenrod Schwergutabscheider

Also Published As

Publication number Publication date
EP0482566A2 (fr) 1992-04-29
ES2089086T3 (es) 1996-10-01
DK0482566T3 (da) 1996-07-29
GR3020534T3 (en) 1996-10-31
EP0482566A3 (en) 1992-09-16
CA2059863C (fr) 1996-07-16
DE59107788D1 (de) 1996-06-13
ATE137688T1 (de) 1996-05-15
IT1244077B (it) 1994-07-05
US5205418A (en) 1993-04-27
IT9021862A0 (it) 1990-10-24
CA2059863A1 (fr) 1993-07-23
IT9021862A1 (it) 1992-04-24

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