EP0427679A3 - Device for fractionating granular goods - Google Patents

Device for fractionating granular goods Download PDF

Info

Publication number
EP0427679A3
EP0427679A3 EP19900810848 EP90810848A EP0427679A3 EP 0427679 A3 EP0427679 A3 EP 0427679A3 EP 19900810848 EP19900810848 EP 19900810848 EP 90810848 A EP90810848 A EP 90810848A EP 0427679 A3 EP0427679 A3 EP 0427679A3
Authority
EP
European Patent Office
Prior art keywords
components
specific weight
drop
plane
large specific
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.)
Granted
Application number
EP19900810848
Other languages
German (de)
French (fr)
Other versions
EP0427679A2 (en
EP0427679B1 (en
Inventor
Eberhard Dipl.-Ing. Funke
Eberhard Plee
Siegfried Dipl.-Ing. Voigt
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.)
WIRTH MUEHLENBAU DRESDEN GMBH
Original Assignee
Wirth Muehlenbau Dresden GmbH
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 Wirth Muehlenbau Dresden GmbH filed Critical Wirth Muehlenbau Dresden GmbH
Publication of EP0427679A2 publication Critical patent/EP0427679A2/en
Publication of EP0427679A3 publication Critical patent/EP0427679A3/en
Application granted granted Critical
Publication of EP0427679B1 publication Critical patent/EP0427679B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B4/00—Separating by pneumatic tables or by pneumatic jigs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B4/00—Separating by pneumatic tables or by pneumatic jigs
    • B03B4/02—Separating by pneumatic tables or by pneumatic jigs using swinging or shaking tables
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements

Abstract

During operation, the concentrator plane (3) and the stone extraction plane (4) are made to vibrate. Air is extracted at (19). The air which flows through the concentrator plane (3) fluidises the granular material which is let in through the feed (13) so that it flows off uniformly in an inclined direction. Components with a large specific weight collect on the underside, components with a low specific weight collect on the upper side of the stream. The components with a large specific weight drop down in the drop-through area (7). Components with a low specific weight move towards the light fraction outlet (14). As they drop downwards, the components with a large specific weight are braked by the airstream in the compartments (10), but cannot flow off in the inclined direction because of the transverse webs (11). They are therefore swirled in the compartments before they drop through openings of the second flow mask (9). By means of this swirling, a uniform turbulent airstream through the first flow mask (8) is ensured. As a result, disturbance to the coating of the granular material stream is avoided. In addition, since the uniform charging of the stone separating plane (4) is achieved, the stone separating process is improved. <IMAGE>
EP90810848A 1989-11-06 1990-11-06 Device for fractionating granular goods Expired - Lifetime EP0427679B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD334278 1989-11-06
DD89334278A DD288762A5 (en) 1989-11-06 1989-11-06 DEVICE FOR SEPARATING COMBINED GOOD

Publications (3)

Publication Number Publication Date
EP0427679A2 EP0427679A2 (en) 1991-05-15
EP0427679A3 true EP0427679A3 (en) 1991-07-24
EP0427679B1 EP0427679B1 (en) 1994-06-15

Family

ID=5613578

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90810848A Expired - Lifetime EP0427679B1 (en) 1989-11-06 1990-11-06 Device for fractionating granular goods

Country Status (4)

Country Link
EP (1) EP0427679B1 (en)
AT (1) ATE107197T1 (en)
DD (1) DD288762A5 (en)
DE (1) DE59006134D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426502C2 (en) * 1994-07-27 1996-08-01 Noell Abfall & Energietech Rocker
WO1997014513A1 (en) * 1995-10-19 1997-04-24 Ocrim S.P.A. A device and apparatus for classification and separation of particles in cereal milling process
DE102007045664B3 (en) * 2007-09-25 2009-03-19 Michael Meserle Method and device for removing dust and / or fibrous admixtures from a plastic granulate
CN105214956B (en) * 2015-10-28 2017-06-30 中国矿业大学 A kind of dense gas solidization bed dry separation system and technique
CN109772703A (en) * 2018-12-25 2019-05-21 泰州市长江食品有限公司 A kind of environment-friendly high-efficiency removal of impurities screening sesame raw material system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678131A (en) * 1950-07-17 1954-05-11 Robert F Dore Dry concentrator
CH547667A (en) * 1971-10-22 1974-04-11 Buehler Ag Geb PROCESS AND DEVICE FOR ENRICHING BY SORTING AND ENRICHED FRACTIONS OF GRAINY GOODS.
EP0162014A1 (en) * 1984-05-08 1985-11-21 Bühler AG Device and method for separating granular goods
WO1988004204A1 (en) * 1986-12-01 1988-06-16 Gebrüder Bühler Ag Installation and process for the dry-grinding of granular foodstuffs and feedstuffs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2678131A (en) * 1950-07-17 1954-05-11 Robert F Dore Dry concentrator
CH547667A (en) * 1971-10-22 1974-04-11 Buehler Ag Geb PROCESS AND DEVICE FOR ENRICHING BY SORTING AND ENRICHED FRACTIONS OF GRAINY GOODS.
EP0162014A1 (en) * 1984-05-08 1985-11-21 Bühler AG Device and method for separating granular goods
WO1988004204A1 (en) * 1986-12-01 1988-06-16 Gebrüder Bühler Ag Installation and process for the dry-grinding of granular foodstuffs and feedstuffs

Also Published As

Publication number Publication date
EP0427679A2 (en) 1991-05-15
DE59006134D1 (en) 1994-07-21
ATE107197T1 (en) 1994-07-15
EP0427679B1 (en) 1994-06-15
DD288762A5 (en) 1991-04-11

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