EP1074362A2 - Calandre pour l'obtention de granulats - Google Patents

Calandre pour l'obtention de granulats Download PDF

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Publication number
EP1074362A2
EP1074362A2 EP00202680A EP00202680A EP1074362A2 EP 1074362 A2 EP1074362 A2 EP 1074362A2 EP 00202680 A EP00202680 A EP 00202680A EP 00202680 A EP00202680 A EP 00202680A EP 1074362 A2 EP1074362 A2 EP 1074362A2
Authority
EP
European Patent Office
Prior art keywords
elastomer
roll
rolls
rolling
layer
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Withdrawn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
EP00202680A
Other languages
German (de)
English (en)
Other versions
EP1074362A3 (fr
Inventor
Ermes c/o L.B.-Officine Meccaniche-S.P.A. Bigi
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.)
L B Officine Meccaniche SpA
Original Assignee
L B Officine Meccaniche SpA
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 L B Officine Meccaniche SpA filed Critical L B Officine Meccaniche SpA
Publication of EP1074362A2 publication Critical patent/EP1074362A2/fr
Publication of EP1074362A3 publication Critical patent/EP1074362A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C1/00—Apparatus or methods for obtaining or processing clay
    • B28C1/10—Apparatus or methods for obtaining or processing clay for processing clay-containing substances in non-fluid condition ; Plants
    • B28C1/14—Apparatus or methods for obtaining or processing clay for processing clay-containing substances in non-fluid condition ; Plants specially adapted for homogenising, comminuting or conditioning clay in non-fluid condition or for separating undesired admixtures therefrom
    • B28C1/18—Apparatus or methods for obtaining or processing clay for processing clay-containing substances in non-fluid condition ; Plants specially adapted for homogenising, comminuting or conditioning clay in non-fluid condition or for separating undesired admixtures therefrom for comminuting clay lumps
    • B28C1/187—Apparatus or methods for obtaining or processing clay for processing clay-containing substances in non-fluid condition ; Plants specially adapted for homogenising, comminuting or conditioning clay in non-fluid condition or for separating undesired admixtures therefrom for comminuting clay lumps using co-operating rotating elements, e.g. cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/02—Conditioning the material prior to shaping
    • B28B17/026—Conditioning ceramic materials
    • 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
    • B30B11/16—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using pocketed rollers, e.g. two co-operating pocketed rollers
    • B30B11/165—Roll constructions
    • 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
    • B30B11/18—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using profiled rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/30—Feeding material to presses
    • B30B15/302—Feeding material in particulate or plastic state to moulding presses
    • B30B15/308—Feeding material in particulate or plastic state to moulding presses in a continuous manner, e.g. for roller presses, screw extrusion presses

Definitions

  • This invention relates to rolling plants used in the ceramics industry for forming flakes from fine granular or atomized powder.
  • roller mills plants known as roller mills are available in which a screw feeder feeds the powder to two overlying motorized rolls, the rolling surfaces of which are slightly spaced apart to an extent depending on the thickness of the compacted material strip to be obtained.
  • suitable means break said strip into flakes.
  • the lateral surface of said rolls is generally covered with a layer of vulcanized rubber extending along the entire roll length.
  • the object of the invention is to overcome the aforesaid drawback within the framework of a rational and reliable solution.
  • the invention attains said object by providing a rolling plant comprising a screw feeder for feeding the powder or atomized coloured material between two overlying motorized rolls having their rolling surfaces in contact.
  • each of said rolls comprises in a central position an annular recess carrying, fixed therein, an elastomeric covering which by virtue of the pressure which the material exerts thereagainst by the action of the screw feeder, deforms to form a uniform strip of the material.
  • Said elastomeric covering is maintained fixed in position within the annular recess, aided by a series of elastomeric teeth which project from the circumferential edges thereof and are inserted into a like number of equidistant holes provided in the inner walls of said annular recess.
  • the presence of the teeth is not however essential.
  • Said figures show the rolling plant 1, comprising a screw feeder 2 feeding powder or atomized material between two identical facing rolls 3 and 4 arranged to form a uniform material strip which is then broken into flakes by a cross element 5 of horizontal axis.
  • a chute 6 By means of a chute 6, the flakes are then fed between blades 71 and 81, which are positioned in mutual contact to form a cutter and are supported by two shafts 7 and 8 respectively.
  • the screw feeder 2 which is of usual type, is driven by a geared motor 20 and is fed with material in powder form through the port 21.
  • the screw feeder exit port 22 is of rectangular section, and is positioned at the contact surface between the rolls 3 and 4. To the vertical sides of said port 22 there are fixed two identical angular plates 23, one of which is visible in Figure 1, for retaining the material fed between the rolls, each of said plates having two curved sides of the same radius of curvature as the rolls 3 and 4, so that the entire material is channelled between said rolls.
  • each roll 3 and 4 comprises a central hub 10 provided with a usual spline 100 for receiving a key 11 for keying the hub onto the shaft 12.
  • a hollow cylinder 14 is rigidly joined to said hub 10 by three identical rings 13.
  • the outer surface of said cylinder 14 comprises a central annular recess 15 defining two circumferential edges 140 and 141 provided with a series of equidistant through holes 1410, the function of which will be clarified hereinafter.
  • a layer 16 of vulcanized rubber having its outer surface coplanar with the outer surface of the edges 141, and comprising a series of gripping teeth 160 which project from its circumferential edges and are inserted into the holes 1410.
  • the holes 1410 are flared at 1420 to improve the grip of the teeth 160 against the edges 140 and 141.
  • the teeth 160 prevent the ends of the vulcanized rubber layer 16 from emerging from the annular recess 15.
  • said rubber layer is formed, together with its teeth, by moulding and vulcanization in-situ.
  • One end of the shaft 12 of the upper roll 3 (see Figure 2) carries a step-down gear unit 18 coupled to the shaft (not shown) of a motor 19, to the opposite end of said shaft 12 there being fixed a sprocket 200 which transmits motion to the sprocket (not shown) keyed onto the shaft of the underlying roll 4.
  • the shaft 12 of the roll 3 can be adjusted in height by being mounted on a vertical slot 120, shown as a dashed line in said figure. This enables the roll 3 to be positioned in contact with the underlying roll 4 or slightly spaced from it, depending on the thickness of the flakes to be produced.
  • the cross element 5 which is rotated by means of usual type, not shown, consists of a central block 50 from which there extend four equidistant identical blades perpendicular to each other and of length equal to that of the rolls 3 and 4. Said cross element 5 can traverse horizontally by being supported in two slots 21, to enable it to be positioned at the desired distance based on the size of the flakes to be obtained.
  • the flakes broken off by the cross element are fed between the two shafts 7 and 8, of which the shaft 7 is rotated by the geared motor 22 and transmits motion to the shaft 8 via a pair of sprockets 24 and 25.
  • the shafts 7 and 8 carry the circular blades 71 and 81 respectively, which make mutual contact to act as cutters. With reference to Figure 1, at the exit of the blades 71 and 81 the material flakes fall either into an underlying collection container, not shown, or onto a usual conveyor belt.
  • chute 6 In front of the chute 6 there is provided a similar chute 60, a usual scraper 25 and 26 being associated with each roll 3 and 4. A further chute 61 is provided below the scraper 25 to collect any powder falling by the action of the scraper 25.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
EP00202680A 1999-08-04 2000-07-26 Calandre pour l'obtention de granulats Withdrawn EP1074362A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE990086 1999-08-04
IT1999RE000086A IT1309769B1 (it) 1999-08-04 1999-08-04 Impianto di laminazione per la formazione di scaglie.

Publications (2)

Publication Number Publication Date
EP1074362A2 true EP1074362A2 (fr) 2001-02-07
EP1074362A3 EP1074362A3 (fr) 2002-11-06

Family

ID=11399483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00202680A Withdrawn EP1074362A3 (fr) 1999-08-04 2000-07-26 Calandre pour l'obtention de granulats

Country Status (2)

Country Link
EP (1) EP1074362A3 (fr)
IT (1) IT1309769B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118272A1 (fr) * 2004-06-04 2005-12-15 Joint Solar Silicon Gmbh & Co. Kg Dispositif de compression
EP1640069A1 (fr) * 2004-09-24 2006-03-29 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Installation pour fabrication de paillettes d'une poudre fine
RU178700U1 (ru) * 2017-05-03 2018-04-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Ижевский государственный технический университет имени М.Т. Калашникова" Установка для изготовления топливных и кормовых гранул
CN113103426A (zh) * 2021-04-16 2021-07-13 广州市绿志环保科技有限公司 Pc全自动铺网机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812815A (en) * 1955-02-08 1957-11-12 Mitts & Merrill Dicing apparatus for sheet materials
DE1125390B (de) * 1958-07-26 1962-03-15 Haas Friedrich Maschf Walze zur gleichmaessigen Druckerzeugung bei der Behandlung von flaechigem Material,z.B. Gewebebahnen
US3634570A (en) * 1969-10-20 1972-01-11 Du Pont Elastomer granulation process
US4211524A (en) * 1978-10-10 1980-07-08 Allis-Chalmers Corporation Rolls for compacting mill
DE3338487A1 (de) * 1983-10-22 1985-05-02 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Presswalze
EP0478535A2 (fr) * 1990-09-24 1992-04-01 Ickinger, Georg, Dipl.-Ing.- Dr.techn. Objet avec une couche en polymère, p.e. rouleau, coussin à pression, avec adhésion localisé et procédé pour sa fabrication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2812815A (en) * 1955-02-08 1957-11-12 Mitts & Merrill Dicing apparatus for sheet materials
DE1125390B (de) * 1958-07-26 1962-03-15 Haas Friedrich Maschf Walze zur gleichmaessigen Druckerzeugung bei der Behandlung von flaechigem Material,z.B. Gewebebahnen
US3634570A (en) * 1969-10-20 1972-01-11 Du Pont Elastomer granulation process
US4211524A (en) * 1978-10-10 1980-07-08 Allis-Chalmers Corporation Rolls for compacting mill
DE3338487A1 (de) * 1983-10-22 1985-05-02 Sulzer-Escher Wyss GmbH, 7980 Ravensburg Presswalze
EP0478535A2 (fr) * 1990-09-24 1992-04-01 Ickinger, Georg, Dipl.-Ing.- Dr.techn. Objet avec une couche en polymère, p.e. rouleau, coussin à pression, avec adhésion localisé et procédé pour sa fabrication

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005118272A1 (fr) * 2004-06-04 2005-12-15 Joint Solar Silicon Gmbh & Co. Kg Dispositif de compression
US7584919B2 (en) 2004-06-04 2009-09-08 Joint Solar Silicon Gmbh & Co. Kg Compacting device
EP1640069A1 (fr) * 2004-09-24 2006-03-29 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Installation pour fabrication de paillettes d'une poudre fine
RU178700U1 (ru) * 2017-05-03 2018-04-17 федеральное государственное бюджетное образовательное учреждение высшего образования "Ижевский государственный технический университет имени М.Т. Калашникова" Установка для изготовления топливных и кормовых гранул
CN113103426A (zh) * 2021-04-16 2021-07-13 广州市绿志环保科技有限公司 Pc全自动铺网机
CN113103426B (zh) * 2021-04-16 2022-09-16 深圳市绿志新型建材研究院有限公司 Pc全自动铺网机

Also Published As

Publication number Publication date
ITRE990086A0 (it) 1999-08-04
ITRE990086A1 (it) 2001-02-04
EP1074362A3 (fr) 2002-11-06
IT1309769B1 (it) 2002-01-30

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