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1. WO1998017404 - AIR DENSITY SYSTEM WITH AIR RECIRCULATION AND GYRATING BAR FEEDER

Publication Number WO/1998/017404
Publication Date 30.04.1998
International Application No. PCT/US1997/017214
International Filing Date 25.09.1997
Chapter 2 Demand Filed 22.04.1998
IPC
B07B 1/38 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING 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
1Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
38oscillating in a circular arc in their own plane; Plansifters
B07B 4/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING 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
4Separating solids from solids by subjecting their mixture to gas currents
08while the mixtures are supported by sieves, screens, or like mechanical elements
B07B 9/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING 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
9Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
B07B 11/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING 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
11Arrangement of accessories in apparatus for separating solids from solids using gas currents
06Feeding or discharging arrangements
D21B 1/02 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
BFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
1Fibrous raw materials or their mechanical treatment
02Pretreatment of the raw materials by physical or chemical means
CPC
B07B 1/12
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPERATING 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
1Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
12Apparatus having only parallel elements
B07B 1/38
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPERATING 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
1Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
38oscillating in a circular arc in their own plane; Plansifters
B07B 11/04
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPERATING 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
11Arrangement of accessories in apparatus for separating solids from solids using gas currents
04Control arrangements
B07B 11/06
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPERATING 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
11Arrangement of accessories in apparatus for separating solids from solids using gas currents
06Feeding or discharging arrangements
B07B 4/08
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPERATING 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
4Separating solids from solids by subjecting their mixture to gas currents
08while the mixtures are supported by sieves, screens, or like mechanical elements
B07B 9/00
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPERATING 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
9Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Applicants
  • BELOIT TECHNOLOGIES, INC. [US]/[US]
Inventors
  • BIELAGUS, Joseph, B.
Agents
  • CAMPBELL, Raymond, W.
Priority Data
08/733,81118.10.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) AIR DENSITY SYSTEM WITH AIR RECIRCULATION AND GYRATING BAR FEEDER
(FR) SYSTEME DE SEPARATION PNEUMATIQUE AVEC CIRCULATION INTERNE D'AIR ET DISTRIBUTEUR A BARRE OSCILLANTE
Abstract
(EN)
An air density separator (20) has a vertical air separation chamber (24) that opens downwardly to allow rejected material (54) to fall out from the chamber (24) through the open bottom. The air density separator (20) is configured to recirculate the air and entrained fines, and so minimizes emissions and costly air treatment processes. The air separation chamber (20) is connected by a first duct (26) to a cyclone (28). A fan (30) is positioned adjacent the lower end (34) to the air separation chamber (24), and draws air through a second duct (27) out of the cyclone (28) for reintroduction into the air chamber (24). The fan (30) by way of the cyclone (28) draws air through the first duct (26) from the air separation chamber (24). The fan (30) exhausts into the vertical air separation chamber (24) below the material infeed (61) through a plenum (31). An oscillating screen (36) composed of bars (38) extends into the separation chamber (24) of the air density separator (20) and is used to disperse material into the separation chamber (24). The bars (38) are spaced apart to allow air to be drawn up through the bars (38) to separate the light component (56) in the feed material (44) from heavier materials (54). A tray (61) to which the bars (38) are mounted is caused to oscillate by an eccentric weight (50) which is mounted to the bars (38) and driven to oscillate in a horizontal plane. The tray (61) is suspended by four universal linkages (47) to a support frame (46), the linkages (47) allowing the tray (61) and attached bars (38) to oscillate.
(FR)
L'invention concerne un séparateur pneumatique (20) comportant une chambre verticale (24) de séparation d'air, s'ouvrant vers le bas pour permettre à une matière (54) rejetée de tomber de la chambre (24) par le fond ouvert. Le séparateur pneumatique (20) est conçu de manière à permettre une circulation interne de l'air et des particules fines entraînées, et donc de réduire les émissions et les coûteux procédés de traitement de l'air. La chambre (24) de séparation d'air est reliée par un premier conduit à un cyclone (28). Un ventilateur (30) est disposé de manière contiguë à l'extrémité inférieure (34) de la chambre (24) de séparation d'air, et entraîne l'air par un deuxième conduit (27) hors du cyclone (28) pour le réintroduire dans la chambre (24) de séparation d'air. Le ventilateur (30) entraîne l'air au moyen du cyclone (28) par le premier conduit (26) à partir de la chambre (24) de séparation d'air. Le ventilateur (30) évacue l'air dans la chambre (24) verticale de séparation d'air située sous le dispositif d'alimentation (61) en substance de base, à travers une chambre de répartition (31). Un écran oscillant (36) composé de barres (38) s'étend dans la chambre (24) de séparation. Les barres (38) sont espacées pour permettre à l'air d'être aspiré à travers les barres (38) afin de séparer les éléments légers (56) présents dans la substance de base (44) des matières plus lourdes (54). Un poids excentrique (50) monté sur les barres (38) et oscillant dans un plan horizontal provoque l'oscillation du plateau (61) sur lequel sont montées les barres (38). Le plateau (61) est suspendu par quatre mécanismes de liaison (47) universels à un cadre de support (46), les mécanismes de liaison (47) permettant au plateau (61) et aux barres (38) qui y sont fixées d'osciller.
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