EP3085462B1 - Scheibensieb zum trennen von festen materialien - Google Patents

Scheibensieb zum trennen von festen materialien Download PDF

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Publication number
EP3085462B1
EP3085462B1 EP16166548.4A EP16166548A EP3085462B1 EP 3085462 B1 EP3085462 B1 EP 3085462B1 EP 16166548 A EP16166548 A EP 16166548A EP 3085462 B1 EP3085462 B1 EP 3085462B1
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EP
European Patent Office
Prior art keywords
disks
separating solid
disk screen
rotation
sleeve
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Application number
EP16166548.4A
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English (en)
French (fr)
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EP3085462A1 (de
Inventor
Domenico Cappozzo
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Ecostar Srl
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Ecostar Srl
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Application filed by Ecostar Srl filed Critical Ecostar Srl
Priority to RS20200363A priority Critical patent/RS60086B1/sr
Priority to SI201630703T priority patent/SI3085462T1/sl
Priority to PL16166548T priority patent/PL3085462T3/pl
Publication of EP3085462A1 publication Critical patent/EP3085462A1/de
Application granted granted Critical
Publication of EP3085462B1 publication Critical patent/EP3085462B1/de
Priority to HRP20200531TT priority patent/HRP20200531T1/hr
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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
    • B07B1/12—Apparatus having only parallel elements
    • B07B1/14—Roller screens
    • B07B1/15—Roller screens using corrugated, grooved or ribbed rollers
    • 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 present invention regards a disk screen for separating solid materials, according to the preamble of the main independent claim.
  • the present disk screen is intended to be employed, in a per se conventional manner, for separating solid materials of various type, such as: solid urban waste, inert fluvial material, products of the organic fractions of the separate waste collection, compost (for the refining thereof), recycled wood, biomass, inert material, demolition material, land drainage material and dump material, glass, plastic, scrap metal and still other materials.
  • the disk screen according to the invention is therefore inserted in the industrial field of treating solid residues and is advantageously intended to be installed downstream of plants for crushing and grinding the same residues.
  • the term “residues” refers - in an undifferentiated manner and for the sake of brevity - to any one solid material which requires being separated into its components based on size or mass.
  • the present invention regards a screen of disk type, for example described in the patent US 4972959 .
  • the disk screens usually comprise a support structure, which carries, rotatably mounted thereon, numerous equidistant shafts in succession, parallel to each other and rotating in a same rotation direction.
  • a group of disks is axially fixed on each shaft, such disks separated from each other by a distance less than the thickness of the single disks, in order to allow interposing the disks mounted on the contiguous shafts such that each disk of any one shaft is interposed between two disks of the adjacent front and rear shafts.
  • the screening surface is defined as the area of the openings delimited between the disks and the rotating shafts and is therefore indicative of the size of the residues that are separated by the screen, falling by gravity below the surface of the screening surface.
  • a screen is known from the model DE 29711724 in which the disks mounted on the rotating shafts are maintained spaced from each other by spacer rollers directly fit on the disks, so as to rotate together therewith.
  • the main drawback lies in the fact that the presence of filiform elements between the residues to be screened, such as the presence of cables, strips, rags, plastic bags and similar materials, jeopardizes the correct operation of the screen.
  • filiform elements in fact tend to be twisted around the disks and shafts of the screen and to obstruct the spaces between the disks, modifying the screen area and in the end compromising the screening operations.
  • a disk screen is known from the patent EP 1106264 on behalf of the same Applicant that is provided with idle sleeves interposed between the disks, such sleeves having the function of preventing or at least limiting the obstruction of the screen area.
  • each sleeve is axially mounted on the shaft between two disks with clearance adapted to allow it to freely idly rotate on the shaft or on a tubular body provided externally with respect to the shaft.
  • Patent DE 102007027846 describes a further example of a disk screen of the known type, which is provided with a plurality of sleeves, each comprising a tubular body mounted idle on a corresponding rotating shaft between two disks in succession. Each lateral face of the disks has a central depression of circular form, which is intended to receive in abutment the terminal edge of the tubular body of the corresponding sleeve.
  • the disk screens with idle sleeves of the above-described known type have in practice the drawback of allowing small-size material (such as sand, dust etc.) to be inserted in the clearance existing between the idle sleeves and the disks fit on the shafts, so as to create a mechanical connection between the rotating shafts and the sleeves themselves, coming to drive in rotation the sleeves to the detriment of their anti-twisting action.
  • small-size material such as sand, dust etc.
  • the problem underlying the present invention is therefore that of eliminating the problems of the abovementioned prior art, by providing a disk screen in accordance with claim 1 for separating solid materials which is entirely reliable in operation over time.
  • Another object of the present invention is to provide a disk screen for separating solid materials which prevents repeating maintenance operations due to the twisting of filiform elements.
  • Another object of the present invention is to provide a disk screen for separating solid materials which is capable of maintaining the idle rotation of provided sleeves mounted on rotation shafts.
  • Another object of the present invention is to provide a disk screen for separating solid materials which is simple and inexpensive to attain and entirely reliable in operation.
  • Another object of the present invention is to provide a disk screen for separating solid materials which can be employed in a versatile manner in different application areas.
  • reference number 1 indicates a disk screen for separating solid materials, subject of the present invention.
  • the screen 1 according to the invention is adapted to be employed for separating solid materials of various type, such as: solid urban waste, inert fluvial material, products of the organic fractions of the separate waste collection, compost (for the refining thereof), recycled wood, biomass, inert material, demolition material, land drainage material and dump material, glass, plastic, scrap metal and still other materials.
  • the disk screen 1 as schematically represented in the enclosed figures comprises a support structure 2, intended to abut against the ground, and on which a plurality of rotation shafts 3 - parallel to and spaced from each other - are rotatably mounted, as in particular can be appreciated in the image of figure 2 which represents a plan view of the screen.
  • the rotation shafts 3 have longitudinal extension axes, indicated with Y, which define a preferably horizontal position, as illustrated in the drawings, but which can also assume a tilt without departing from the protective scope of the present patent.
  • Driving means 4 are provided that are adapted to carry the shafts 3 in rotation, in the rotation direction indicated by the arrow and marked with the reference R.
  • the shafts 3 all rotate in the same rotation direction R in order to move the residues between an inlet port and an outlet port in a per se entirely conventional manner, for this reason not described in more detail.
  • the driving means 4 comprise an electric motor 4a and motion transmission means 5 mechanically connected to the electric motor 4a.
  • Such transmission means 5 in turn comprise a chain 6 wound as a closed loop and engaging with a pinion 7 fixed to the shaft of the motor 4a and to gear wheels 70 fit on each rotation shaft 3.
  • the screen 1 also comprises a plurality of disks 8, which are axially mounted in succession along the rotation shafts 3 in order to receive the rotation motion therefrom.
  • each rotation shaft 3 a group of disks 8 is mounted which, for example, in accordance with the enclosed figure 2 , can be formed by nine and ten disks on adjacent shafts in succession.
  • the disks 8 of each group of disks are mounted spaced from each other along the extension of the longitudinal axis Y of the rotation shaft 3.
  • the screen 1 is also provided with a plurality of sleeves 10, each of which comprising a tubular body 11, which is mounted externally idle on a respective rotation shaft 3 between two disks 8 in succession, and is provided with an inner surface 11A, oriented toward the rotation shaft 3, and with an outer surface 11B oriented in a opposite direction with respect to the inner surface 11A.
  • the disks 8 are instead otherwise mechanically rotatably coupled to the rotation shaft 3 in order to receive the rotation motion thereof.
  • the rotation shaft 3 for example has a male shaped profile 30, defined by the form of its external surface and in particular by its cross section, and the disk 8 has a female shaped profile 80 joined to the aforesaid male shaped profile 30, and in particular defined by a through hole adapted to receive the aforesaid male shaped profile 30.
  • the male shaped profile 30 has a polygonal (e.g. hexagonal) cross section
  • the disks 8 have a female shaped profile 80 defined by a through hole 80 with corresponding polygonal shape traversed, to size, by the rotation shaft 3 which, due to the aforesaid form engagement, is thus susceptible to rotate the group of disks 8.
  • each disk 8 has the shape of a hexagonal polygonal prism having six flat faces 8C that facilitate the advancement of the residues to be screened during the rotation of the shafts 2.
  • the disks 8 can also have external profiles of different shape, advantageously adapted for facilitating the advancement of the residues between the inlet port and the outlet port.
  • the motor 4a - by means of the chain 6 wound as a ring on the pinion 7 of the motor shaft and on the gear wheels 70 of the rotation shafts 3 - rotates the rotation shafts 3 in the same direction, indicated with R, and the hexagonal profile with flat face 8C of the disks 8 impacts with the residues, facilitating the advancement thereof via thrust along the screening plane in the advancement direction indicated with A in figure 1 .
  • the presence of the sleeves 10 prevents, or at least limits, the winding of filiform residues around the rotation shafts 3. Indeed, the sleeves 10 do not follow the rotation shafts 3 during their rotation and are not integrally moved with the residues.
  • Each disk 8 is provided with two lateral faces 8A and 8B orthogonal to the longitudinal axis Y of the respective rotation shafts 3.
  • Such faces 8A and 8B are preferably substantially parallel and oriented in opposite directions.
  • the lateral faces 8A and 8B of the disks 8 have each a central depression 12 of circular form and each sleeve 10 in turn comprises two annular shoulders 13 which are fixed to the ends of the tubular body 11, and project radially from the outer surface 11B of the tubular body 11 itself.
  • each annular shoulder 13 is provided with an external section 13' which projects from the outer surface 11B of the tubular body 11 of the corresponding sleeve 10, extending outside the tubular body 11 itself, and in particular extending substantially orthogonally to the outer surface 11B of the tubular body 11.
  • Each annular shoulder 13 is inserted, preferably substantially to size, within the central depressions 12 of the corresponding lateral face 8A, 8B of the disk 8.
  • each sleeve 10 is fixed to the ends of the tubular body 11 by means of fixing means, such as welding or screw means.
  • the sleeves 10 with their annular shoulders 13 remain mainly stopped, given that they are idly mounted on the rotation shafts 3.
  • the provided object of the invention - to insert the annular shoulders 13 within the central depressions 12 - allows obtaining the necessary clearance between the two moving parts at a position in which it is improbable that there will be an insertion of undesired material that would lead to connecting the sleeve 10 to the disk 8 and to the shaft 3, i.e. bringing in rotation also the sleeve 10, as if it were not idly mounted.
  • the clearance between sleeve and disks is obtained on the tubular body, i.e. on the bottom of the space enclosed between the disks, and involves the undesired penetration of material with the consequent formation of a mechanical drive constraint between sleeves and disks that leads to the twisting of the filiform material.
  • the depressions 12 are situated on a lying plane that is more retreated and within the disk 8 than the plane defined by the remaining annular portions 9 of the lateral faces 8A, 8B, to which the depressions 12 are connected by means of a sunken edge 120.
  • sunken edge 120 peripherally delimits the depressions 12 and is therefore extended with an axial component within the thickness of the disk 8.
  • the sunken edge 120 of the depressions 12 of each lateral face 8A, 8B of each disk 8 faces, preferably to size, the circumferential profile 113 of the corresponding annular shoulder 13 inserted in the depression 12 itself.
  • the term "to size” means that the sunken edge 120 of each depression 12 faces the circumferential profile 113 of the corresponding annular shoulder 13 with a clearance (defined as the distance between the circumferential profile 113 and the sunken edge 120) of about 1-5 centimeters and preferably of about 3-4 centimeters.
  • the lateral areas of the annular shoulders 13, i.e. the most external faces directed towards the opposite shoulder 13 of the same sleeve 10, are embedded within the central depressions 12, i.e. they are slightly recessed in the disk 8 by a thickness S illustrated in figure 4 .
  • each sleeve 10 are radially extended for an inner section 23 towards the longitudinal axis Y of the shaft 3 and are each provided with a through hole 130 traversed by the same rotation shaft 3.
  • each annular shoulder 13 projects from the inner surface 11A of the tubular body 11 of the corresponding sleeve 10, and is preferably provided with an inner edge defining the above mentioned through hole 130.
  • each sleeve 10 obtained with shaped metal plates are ring shaped, centrally provided with the through hole 130 for traversing the shaft 3.
  • the screen 1 also comprises preferably a plurality of spacer tubular bodies 14, each of which is externally mounted on the rotation shaft 3 and is interposed and in abutment between the lateral faces 8A and 8B of two disks 8 in succession. Therefore, the disks 8 are inserted in succession on the rotation shaft 3, alternating them with the spacer tubular bodies 14 which, being pressed between the contiguous disks, rotate together therewith.
  • each spacer tubular body 14 externally with respect to each spacer tubular body 14, a corresponding sleeve 10 is externally mounted with clearance.
  • each spacer tubular body 14 defines the distance between each pair of disks 8 in succession and is slightly greater than the longitudinal length d of each sleeve 10, in order to ensure the axial clearance of such sleeve between the pair of disks 8, between which it is comprised.
  • each sleeve 10 can be rotatably moved in a free manner around the corresponding spacer tubular body 14 on which it is mounted.
  • a radial clearance G is provided therebetween, illustrated as an example in figure 4 , and defined in particular between the inner edge of the inner section 23 of each annular shoulder 13 and the lateral external surface of the corresponding spacer tubular body 14.
  • the finding thus conceived therefore attains the pre-established objects.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Processing Of Solid Wastes (AREA)
  • Centrifugal Separators (AREA)
  • Cyclones (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (8)

  1. Scheibensieb zum Trennen von festen Materialien, das Folgendes umfasst:
    - eine tragende Struktur (2);
    - eine Vielzahl von zueinander parallelen und auf der genannten tragenden Struktur (2) drehbar montierten Drehwellen (3);
    - Elemente für den Motorantrieb (4) der genannten Drehwellen (3), um diese um ihre Längsverlaufsachse (Y) herum in Drehung zu versetzen;
    - eine Vielzahl von axial nacheinander im Abstand zueinander entlang der genannten Drehwellen (3) montierten, mit zwei rechtwinklig zu der Längsverlaufsachse (Y) der entsprechenden genannten Drehwellen (3) liegenden Seitenflächen (8A, 8B) ausgestatteten Scheiben (8);
    - eine Vielzahl von jeweils einen Rohrkörper (11) umfassenden Muffen (10), wobei dieser Rohrkörper (11) gleitend außen auf einer entsprechenden genannten Drehwelle (3) zwischen zwei aufeinanderfolgenden Scheiben (8) montiert und mit einer zu der genannten Drehwelle (3) gerichteten Innenfläche (11A) und einer im Verhältnis zu der genannten Innenfläche (11A) in entgegengesetzte Richtung gewandten Außenfläche (11B) ausgestattet ist; wobei die genannten Scheiben (8) dagegen mechanisch drehbar mit der genannten Drehwelle (3) gekuppelt sind, um die Drehbewegung derselben zu übernehmen;
    wobei die Seitenflächen (8A, 8B) der genannten Scheiben (8) eine kreisförmige mittige Vertiefung (12) aufweisen;
    wobei das genannte Scheibensieb dadurch gekennzeichnet ist, dass jede der genannten Muffen (10) zwei an den Enden des genannten Rohrkörpers (11) befestigte ringförmige Seitenteile (13) umfasst, die radial vorstehend von der Außenfläche (11B) des genannten Rohrkörpers (11) verlaufen und in das Innere der mittigen Vertiefungen (12) der Seitenflächen (8A, 8B) der genannten Scheiben (8) eingesetzt sind;
    wobei die ringförmigen Schultern (13) jeder Muffe (10) aus Formmetallplatten erzielt werden.
  2. Scheibensieb zum Trennen von festen Materialien nach Anspruch 1, dadurch gekennzeichnet, dass die genannten Vertiefungen (12) umlaufend von einem maßgerecht dem Umfangsprofil (113) der genannten ringförmigen Schultern (13) gegenüberliegenden Senkungsrand (120) begrenzt werden.
  3. Scheibensieb zum Trennen von festen Materialien nach Anspruch 1, dadurch gekennzeichnet, dass die Seitenbereiche der genannten ringförmigen Schultern (13) in die genannten mittigen Vertiefungen (12) eingesenkt sind.
  4. Scheibensieb zum Trennen von festen Materialien nach Anspruch 1, dadurch gekennzeichnet, dass die ringförmigen Schultern (13) jeder der genannten Muffen (10) radial zur Achse (Y) der genannten Drehwelle (3) vorstehen und jeweils mit einer von der genannten Drehwelle (3) überquerten Durchgangsöffnung (130) ausgestattet sind, um die Leerlaufdrehung der genannten Muffe (10) auf der genannten Drehwelle (3) zu gestatten.
  5. Scheibensieb zum Trennen von festen Materialien nach Anspruch 1, dadurch gekennzeichnet, dass die ringförmigen Schultern (13) jeder genannten Muffe (10) an den Enden des genannten Rohrkörpers (11) mittels Befestigungselementen angebracht sind.
  6. Scheibensieb zum Trennen von festen Materialien nach Anspruch 1, dadurch gekennzeichnet, dass er eine Vielzahl von Abstandshalter-Rohrkörpern (14) umfasst, von denen jeder außen auf einer entsprechenden Drehwelle (3) montiert, anschlagend zwischen den Seitenflächen (8A, 8B) von zwei aufeinanderfolgenden Scheiben (8) eingefügt ist und außen gleitend montiert eine entsprechende genannte Muffe (10) trägt.
  7. Scheibensieb zum Trennen von festen Materialien nach Anspruch 6, dadurch gekennzeichnet, dass die Längslänge (D) der genannten Abstandshalter-Rohrkörper (14) größer ist als die Längslänge (d) der genannten Muffen (10).
  8. Scheibensieb zum Trennen von festen Materialien nach Anspruch 6, dadurch gekennzeichnet, dass zwischen den genannten Abstandshalter-Rohrkörpern (14) und den genannten Muffen (10) ein radiales Spiel (G) vorhanden ist.
EP16166548.4A 2015-04-23 2016-04-22 Scheibensieb zum trennen von festen materialien Active EP3085462B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
RS20200363A RS60086B1 (sr) 2015-04-23 2016-04-22 Disk sito za razdvajanje čvrstih materijala
SI201630703T SI3085462T1 (sl) 2015-04-23 2016-04-22 Kolutno sito za ločevanje trdnih materialov
PL16166548T PL3085462T3 (pl) 2015-04-23 2016-04-22 Sito dyskowe do separacji materiałów stałych
HRP20200531TT HRP20200531T1 (hr) 2015-04-23 2020-04-01 Disk sito za razdvajanje čvrstih materijala

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPD2015A000086A ITPD20150086A1 (it) 2015-04-23 2015-04-23 Vaglio a dischi per la separazione di materiali solidi

Publications (2)

Publication Number Publication Date
EP3085462A1 EP3085462A1 (de) 2016-10-26
EP3085462B1 true EP3085462B1 (de) 2020-01-01

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Country Status (11)

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EP (1) EP3085462B1 (de)
CA (1) CA2894043A1 (de)
DK (1) DK3085462T3 (de)
ES (1) ES2781702T3 (de)
HR (1) HRP20200531T1 (de)
IT (1) ITPD20150086A1 (de)
LT (1) LT3085462T (de)
PL (1) PL3085462T3 (de)
PT (1) PT3085462T (de)
RS (1) RS60086B1 (de)
SI (1) SI3085462T1 (de)

Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
CN107457174A (zh) * 2017-10-10 2017-12-12 天津百利阳光环保设备有限公司 一种筛分生活垃圾的圆盘筛
IT201800004449A1 (it) * 2018-04-12 2019-10-12 Vaglio separatore a dischi o a stelle per rifiuti, asse impiegabile in tale vaglio e manicotto impiegabile in tale asse
IT201800004450A1 (it) * 2018-04-12 2019-10-12 Vaglio separatore a dischi o a stelle per rifiuti, asse impiegabile in tale vaglio e manicotto impiegabile in tale asse
EP3606678B1 (de) 2018-04-12 2020-09-09 GEO S.A.S. di Tazzoli Antonio & C. Trennsieb in scheiben oder sternen für abfall, in solch einem sieb wiederverwendbare achse sowie verfahren zur modifizierung eines trennsiebs in scheiben oder sternen für abfall
IT201900013791A1 (it) 2019-08-02 2021-02-02 Ecostargreen S R L Vaglio a dischi per la separazione di materiali solidi
CN110813694B (zh) * 2019-11-22 2025-01-03 南通中选智科环境科技有限公司 碟盘筛
CN119771749B (zh) * 2025-03-11 2025-07-04 碎得机械(常州)有限公司 一种筛盘及碟盘筛

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Also Published As

Publication number Publication date
ITPD20150086A1 (it) 2016-10-23
RS60086B1 (sr) 2020-05-29
EP3085462A1 (de) 2016-10-26
CA2894043A1 (en) 2016-10-23
PT3085462T (pt) 2020-03-31
PL3085462T3 (pl) 2020-11-30
ES2781702T3 (es) 2020-09-04
HRP20200531T1 (hr) 2020-09-18
SI3085462T1 (sl) 2020-09-30
DK3085462T3 (da) 2020-03-30
LT3085462T (lt) 2020-04-10

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