EP0795359A3 - Air classifier - Google Patents

Air classifier Download PDF

Info

Publication number
EP0795359A3
EP0795359A3 EP97890007A EP97890007A EP0795359A3 EP 0795359 A3 EP0795359 A3 EP 0795359A3 EP 97890007 A EP97890007 A EP 97890007A EP 97890007 A EP97890007 A EP 97890007A EP 0795359 A3 EP0795359 A3 EP 0795359A3
Authority
EP
European Patent Office
Prior art keywords
fibres
hopper
drop
airflow
shredding rollers
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
EP97890007A
Other languages
German (de)
French (fr)
Other versions
EP0795359B1 (en
EP0795359A2 (en
Inventor
Manfred Dipl.-Ing. Lisberger
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.)
Scheuch GmbH
Original Assignee
SCHEUCH ALOIS GmbH
Alois Sceuch 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 SCHEUCH ALOIS GmbH, Alois Sceuch GmbH filed Critical SCHEUCH ALOIS GmbH
Publication of EP0795359A2 publication Critical patent/EP0795359A2/en
Publication of EP0795359A3 publication Critical patent/EP0795359A3/en
Application granted granted Critical
Publication of EP0795359B1 publication Critical patent/EP0795359B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/04—Control arrangements
    • 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • 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
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Paper (AREA)
  • Cyclones (AREA)
  • Lubricants (AREA)
  • Medicines Containing Plant Substances (AREA)

Abstract

The prepared wood fibres are dropped into the sieve system via shredding rollers (12) from where they drop into a hopper. An upper airflow (2) and a lower airflow (3) together blow the fibres up out of an exit duct (4) while larger debris and impurities eg. metals, drop into a sump (13) from where they are ducted out of the hopper. The airflows are recycled, with a small amount of make-up air. The upper airflow is via a gridded structure (14) to spread the flow. The grid is angled to lift the airborne fibres. The shredding rollers are in a rising array with the rotation in the same direction, to move the particles of the slope.
EP97890007A 1996-03-14 1997-01-15 Air classifier Expired - Lifetime EP0795359B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0048696A AT403133B (en) 1996-03-14 1996-03-14 SAFE
AT48696 1996-03-14
AT486/96 1996-03-14

Publications (3)

Publication Number Publication Date
EP0795359A2 EP0795359A2 (en) 1997-09-17
EP0795359A3 true EP0795359A3 (en) 1998-03-11
EP0795359B1 EP0795359B1 (en) 2001-07-18

Family

ID=3491881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97890007A Expired - Lifetime EP0795359B1 (en) 1996-03-14 1997-01-15 Air classifier

Country Status (4)

Country Link
EP (1) EP0795359B1 (en)
AT (2) AT403133B (en)
DE (1) DE59704052D1 (en)
ES (1) ES2161434T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6283300B1 (en) * 1998-08-21 2001-09-04 Joseph B. Bielagus Feed distribution for low velocity air density separation
DE10352119A1 (en) * 2003-11-04 2005-06-09 Focke & Co.(Gmbh & Co. Kg) Method and device for sifting tobacco
DE102005052620A1 (en) * 2005-11-02 2007-05-03 Ottow, Manfred, Dr.-Ing. Classifying method for mixture of wood shavings and wood chips, involves introduction of mixture atop centrifugal classifying unit and mixture falls into classifying chamber
DE202006014455U1 (en) 2006-09-18 2006-11-16 Lhs Clean Air Systems Gmbh Coarse and fine material separating device for use in separating air current of separator, has outlet that is arranged for purpose of cross flow review of material below upper inlet for separation air on side opposite to inlet of separator
DE102012108295A1 (en) * 2012-09-06 2014-05-15 Thyssenkrupp Resource Technologies Gmbh Apparatus and method for processing refuse derived fuels
DE102016117384B4 (en) 2016-09-15 2023-08-10 Siempelkamp Maschinen- Und Anlagenbau Gmbh sifter
DE102016117383B4 (en) 2016-09-15 2023-09-21 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sifter
CN106892284B (en) * 2017-04-11 2023-06-09 沅陵县辰州荞韵食品有限公司 Grain screening agricultural machinery equipment and working method thereof
DE102017110600B4 (en) 2017-05-16 2023-09-07 Siempelkamp Maschinen- Und Anlagenbau Gmbh sifter
CN115283254B (en) * 2022-07-29 2023-08-25 中触媒新材料股份有限公司 Rapid screening and activating system and method for air flow of oxygen-making adsorbent particles

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE583680C (en) * 1927-01-11 1933-09-07 Rudolf Lessing Method and device for separating the coarser components from the medium-fine and dust-shaped parts of coal or the like by means of a gas flow rising in a pipe
US4465194A (en) * 1982-12-23 1984-08-14 Universal Leaf Tobacco Co. Threshed tobacco lead separator
WO1992005882A1 (en) * 1990-09-28 1992-04-16 ABB Fläkt AB Method and device for separating heavy particles from a particulate material
DE4112556C1 (en) * 1991-04-17 1992-06-17 G. Siempelkamp Gmbh & Co, 4150 Krefeld, De Spreading installation for chips, fibres etc. - has wind sifter for spreading flow coupled to spread material outlet shaft
EP0491278A2 (en) * 1990-12-19 1992-06-24 Holger Lübke Method and device for dedusting and/or classifying granular or fibrous material in an air stream

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2313614C3 (en) * 1973-03-19 1978-07-13 Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt Device for separating grit from a gas stream containing finely dispersed solids and used for the pneumatic conveyance of these substances
US3883423A (en) * 1973-08-01 1975-05-13 Aerofall Mills Ltd Vertical classifier
IT1124576B (en) * 1978-10-26 1986-05-07 Hartmann Wibau Maschf ARRANGEMENT AND CONFORMATION OF A SIEVE IN A SUCTION AIR CONVEYING SYSTEM WORKING SUBSTANTIALLY AT A PRESSURE BETWEEN 0.6 AND 0.8
DE3131836C2 (en) * 1981-08-12 1985-12-05 Günter 4300 Essen Lübke Device for dedusting and / or classifying substances in an air stream
DD203237A1 (en) * 1982-02-08 1983-10-19 Dietmar Kummer DEVICE AND METHOD FOR PURIFYING DEBITORS, IN PARTICULAR GRANULES OF SYNTHETIC HIGH POLYMERS
DE3409814A1 (en) * 1984-03-16 1985-09-19 Waeschle Maschinenfabrik Gmbh, 7980 Ravensburg COUNTERFLOW SITTER
EP0301217B1 (en) * 1987-07-29 1993-02-03 B.A.T. Cigarettenfabriken GmbH Device for separating tabacco particles for a gas/tobacco mixture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE583680C (en) * 1927-01-11 1933-09-07 Rudolf Lessing Method and device for separating the coarser components from the medium-fine and dust-shaped parts of coal or the like by means of a gas flow rising in a pipe
US4465194A (en) * 1982-12-23 1984-08-14 Universal Leaf Tobacco Co. Threshed tobacco lead separator
WO1992005882A1 (en) * 1990-09-28 1992-04-16 ABB Fläkt AB Method and device for separating heavy particles from a particulate material
EP0491278A2 (en) * 1990-12-19 1992-06-24 Holger Lübke Method and device for dedusting and/or classifying granular or fibrous material in an air stream
DE4112556C1 (en) * 1991-04-17 1992-06-17 G. Siempelkamp Gmbh & Co, 4150 Krefeld, De Spreading installation for chips, fibres etc. - has wind sifter for spreading flow coupled to spread material outlet shaft

Also Published As

Publication number Publication date
DE59704052D1 (en) 2001-08-23
ATA48696A (en) 1997-04-15
ES2161434T3 (en) 2001-12-01
AT403133B (en) 1997-11-25
ATE203191T1 (en) 2001-08-15
EP0795359B1 (en) 2001-07-18
EP0795359A2 (en) 1997-09-17

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