EP0022929A1 - Procédé de traitement de bois avec incorporation d'étapes de nettoyage - Google Patents

Procédé de traitement de bois avec incorporation d'étapes de nettoyage Download PDF

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Publication number
EP0022929A1
EP0022929A1 EP80103316A EP80103316A EP0022929A1 EP 0022929 A1 EP0022929 A1 EP 0022929A1 EP 80103316 A EP80103316 A EP 80103316A EP 80103316 A EP80103316 A EP 80103316A EP 0022929 A1 EP0022929 A1 EP 0022929A1
Authority
EP
European Patent Office
Prior art keywords
wood
cleaning
processing
chips
wood chips
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Withdrawn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
EP80103316A
Other languages
German (de)
English (en)
Inventor
Bernd Piasecki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0022929A1 publication Critical patent/EP0022929A1/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/023—Cleaning wood chips or other raw materials

Definitions

  • the invention relates to a method of the type specified in the preamble of claim.
  • a known method for cleaning small wooden parts, such as wood chips, these being immersed in a cleaning liquid for washing out foreign matter and conveyed out of the cleaning bath and dried separately from the sinking foreign matter parts characterized in that on the Mirror of the cleaning bath, a cover layer is preferably formed from several layers of the wooden parts to be cleaned, so that at least one surface part of this cover layer as a whole is repeatedly immersed and released again and again in such a way that the cleaning liquid flows through the cover layer in succession from different directions and the wooden parts are mutually rearranged, so that the light wood parts are then lifted off the mirror of the cleaning bath, while the sinking heavy wood parts are separated from the foreign matter parts and separately conveyed out of the cleaning liquid.
  • the advantage achieved by this task solution lies in particular in the energy saving which is not given in a wet process due to the drying process of the wood chips and in a further simplification of the apparatus structure of the cleaning device.
  • a wood chip flow falls in the direction of arrow 1, consisting of the wood chips 2 within a container onto a vibrating screen 3, which sorts out fine particles, such as mineral impurities, by the vibrating movement. Due to the shaking movement, the specifically lighter chips are conveyed over the abutting edges in the exemplary embodiment and running in the direction of the incline of the vibrating sieve 3 and thus leaving the sieve in front of the outlet end in the direction of the lower one Arrow to fall through a discharge chute 4.
  • the specifically denser parts with the impurities run through a wind tunnel 5, in which the lighter material discharged from the vibrating sieve follows in the direction of arrow 7 by a sufficient air flow driven above and returned to the cleaning process, while the parts with their specific weight above that of the wood are removed as contaminants via a further discharge chute 6.
  • This dry cleaning process can be carried out in the processing of waste wood and / or immediately after chopping, or before or after a given post-shredding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
EP80103316A 1979-07-18 1980-06-13 Procédé de traitement de bois avec incorporation d'étapes de nettoyage Withdrawn EP0022929A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792929557 DE2929557A1 (de) 1979-07-18 1979-07-18 Verfahren zur aufbereitung von langholz unter einschaltung von reinigungsschritten
DE2929557 1979-07-18

Publications (1)

Publication Number Publication Date
EP0022929A1 true EP0022929A1 (fr) 1981-01-28

Family

ID=6076348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80103316A Withdrawn EP0022929A1 (fr) 1979-07-18 1980-06-13 Procédé de traitement de bois avec incorporation d'étapes de nettoyage

Country Status (2)

Country Link
EP (1) EP0022929A1 (fr)
DE (1) DE2929557A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504464U1 (de) * 1995-03-16 1995-05-11 Greß Holzaufbereitungs GmbH, 07356 Lobenstein Anlage zur Verarbeitung von Holz, insbesondere Altholz

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446701A1 (de) * 1984-12-21 1986-07-03 Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken Verfahren und vorrichtung zum aufbereiten von hackschnitzeln

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58112C (de) * F. PELZER in Dortmund, Hollandische Strafse 18 Sichtevorrichtung mit einstellbarer Luftdüse
FR744440A (fr) * 1933-04-20
DE2332986A1 (de) * 1972-07-03 1974-01-24 Voest Ag Verfahren zum reinigen eines stromes von mechanisch zerkleinertem material und einrichtung zur durchfuehrung des verfahrens
DE2641068A1 (de) * 1976-09-11 1978-03-16 Alpine Ag Steigrohrwindsichter zur entsandung von holzspaenen
DE2647798A1 (de) * 1976-10-22 1978-04-27 Buehler Miag Gmbh Steigwindsichter fuer spangut oder korngut
DE2701345A1 (de) * 1977-01-14 1978-09-28 Alpine Ag Verfahren zur abtrennung eines spezifisch schweren gutes aus einem spezifisch leichten gut und vorrichtung zur durchfuehrung des verfahrens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58112C (de) * F. PELZER in Dortmund, Hollandische Strafse 18 Sichtevorrichtung mit einstellbarer Luftdüse
FR744440A (fr) * 1933-04-20
DE2332986A1 (de) * 1972-07-03 1974-01-24 Voest Ag Verfahren zum reinigen eines stromes von mechanisch zerkleinertem material und einrichtung zur durchfuehrung des verfahrens
DE2641068A1 (de) * 1976-09-11 1978-03-16 Alpine Ag Steigrohrwindsichter zur entsandung von holzspaenen
DE2647798A1 (de) * 1976-10-22 1978-04-27 Buehler Miag Gmbh Steigwindsichter fuer spangut oder korngut
DE2701345A1 (de) * 1977-01-14 1978-09-28 Alpine Ag Verfahren zur abtrennung eines spezifisch schweren gutes aus einem spezifisch leichten gut und vorrichtung zur durchfuehrung des verfahrens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29504464U1 (de) * 1995-03-16 1995-05-11 Greß Holzaufbereitungs GmbH, 07356 Lobenstein Anlage zur Verarbeitung von Holz, insbesondere Altholz

Also Published As

Publication number Publication date
DE2929557A1 (de) 1981-01-29

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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