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1. (WO1991005616) ROTARY SCREEN FOR SEPARATING FINES FROM LOW DENSITY PARTICULATES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/005616 International Application No.: PCT/AU1990/000486
Publication Date: 02.05.1991 International Filing Date: 10.10.1990
Chapter 2 Demand Filed: 13.05.1991
IPC:
B07B 1/24 (2006.01) ,B07B 4/06 (2006.01) ,B07B 4/08 (2006.01) ,B07B 7/06 (2006.01) ,B29B 17/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
07
SEPARATING SOLIDS FROM SOLIDS; SORTING
B
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
1
Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
18
Drum screens
22
Revolving drums
24
with fixed or moving interior agitators
B PERFORMING OPERATIONS; TRANSPORTING
07
SEPARATING SOLIDS FROM SOLIDS; SORTING
B
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
4
Separating solids from solids by subjecting their mixture to gas currents
02
while the mixtures fall
06
using revolving drums
B PERFORMING OPERATIONS; TRANSPORTING
07
SEPARATING SOLIDS FROM SOLIDS; SORTING
B
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
4
Separating solids from solids by subjecting their mixture to gas currents
08
while the mixtures are supported by sieves, screens, or like mechanical elements
B PERFORMING OPERATIONS; TRANSPORTING
07
SEPARATING SOLIDS FROM SOLIDS; SORTING
B
SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
7
Selective separation of solid materials carried by, or dispersed in, gas currents
06
by impingement against sieves
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
17
Recovery of plastics or other constituents of waste material containing plastics
Applicants:
TREFFNER, Charles [AU/AU]; AU
Inventors:
TREFFNER, Charles; AU
Agent:
SMITH SHELSTON BEADLE; Suite 8 207 Great North Road Five Dock, NSW 2046, AU
Priority Data:
PJ 685413.10.1989AU
Title (EN) ROTARY SCREEN FOR SEPARATING FINES FROM LOW DENSITY PARTICULATES
(FR) TAMIS ROTATIF SERVANT A SEPARER LES FINES CONTENUES DANS DES MATIERES PARTICULAIRES DE FAIBLE DENSITE
Abstract:
(EN) A rotary screen for separating fines from expanded polystyrene foam particles comprises a rotary cylindrical screen (15) with its axis substantially horizontal, material to be screened is fed into one end of the screen, a shroud covering an upper part of the screen has its walls sealed to the screen by bristled brush wipers (24), a fan (27) draws air from the shroud, causing air to flow into the screen through its unshrouded lower part, and exhausts same with entrained fines into a filter bag, the residual particles are caused to flow along the screen for discharge at the other end by contact with a stationary Archimedean screw (20) within and co-axial of the screen. The discharged material is received in a vented mixing chamber wherein it is mixed with fresh expandable beads, and fed directly to a foam moulding machine by a second fan drawing air through the mixing chamber.
(FR) Le tamis rotatif décrit, qui sert à séparer les fines mélangées à des particules de mousse de polystyrène expansée, comprend un tamis cylindrique rotatif (15) dont l'axe est sensiblement horizontal et par l'une des extrémités duquel le matériau à tamiser est acheminé, une membrane qui recouvre une partie supérieure du tamis et dont les parois sont scellées au tamis par des balais-brosses à poils (24), un ventilateur (27) qui aspire l'air à partir de la membrane de façon à faire pénétrer le courant d'air dans le tamis à travers sa partie inférieure non recouverte par la membrane et qui fait sortir cet air dans lequel les fines sont entraînées pour les faire pénétrer dans un sac de filtrage. Les particules résiduelles sont amenées à s'écouler le long du tamis pour être déchargées à l'autre extrémité par contact avec une vis d'Archimède fixe (20) placée coaxialement dans le tamis. Le matériau déchargé est reçu dans une chambre de mélange dégazée, où il est mélangé à de nouvelles particules expansibles et acheminé directement dans une machine de moulage de la mousse par un second ventilateur qui aspire l'air à travers la chambre de mélange.
Designated States: CA, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)