EP1900445B1 - Dispositif destiné à séparer des matériaux gros et fins - Google Patents

Dispositif destiné à séparer des matériaux gros et fins Download PDF

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Publication number
EP1900445B1
EP1900445B1 EP07450152.9A EP07450152A EP1900445B1 EP 1900445 B1 EP1900445 B1 EP 1900445B1 EP 07450152 A EP07450152 A EP 07450152A EP 1900445 B1 EP1900445 B1 EP 1900445B1
Authority
EP
European Patent Office
Prior art keywords
opening
separator
air
outlet opening
separating air
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.)
Not-in-force
Application number
EP07450152.9A
Other languages
German (de)
English (en)
Other versions
EP1900445A1 (fr
Inventor
Johann Leonhartsberger
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.)
LHS Clean Air Systems GmbH
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LHS Clean Air Systems GmbH
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Filing date
Publication date
Application filed by LHS Clean Air Systems GmbH filed Critical LHS Clean Air Systems GmbH
Publication of EP1900445A1 publication Critical patent/EP1900445A1/fr
Application granted granted Critical
Publication of EP1900445B1 publication Critical patent/EP1900445B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the invention relates to a device for separating coarse and fine material in a classifying air flow of a classifier, the at least one material feed opening, at least two superimposed inlet openings for the classifying air, at least one outlet opening for the removal of classifying air and sifted material and a discharge for the excreted Coarse material includes.
  • Such devices are used in particular in the production of wood fiber boards used to remove impurities such as ball of material or lumps of excessive size from the flow of material.
  • the wood material is usually first defibered, then wet glued, dried, sifted and finally pressed into plates ( EP 0 795 359 B1 ).
  • the classifiers used are usually ascending sifters in which the material is fed into a stream of air directed upwards in a kind of chimney, whereby the particles of fibers are caught by the upwardly directed stream of air and entrained by the stream of air. The particles with too large a weight to surface ratio fall down into a catch tank and can be discharged through a lock from the classifier.
  • the fibers which leave the sifter at the top and are then cleaned of coarse material, are then usually fed to a cyclone separator in which the material contained in the air stream is separated from the air stream before it can be further processed in the desired manner.
  • the classifying air is usually conducted in a closed circuit and usually treated accordingly prior to re-introduction into the classifier or a certain amount of classifying air fresh fresh air replaced.
  • the material to be cleaned in the classifier usually give up from above into the classifier, the material flow reversed by 180 ° and the material is then applied back up from the classifier, where it is in the material flow especially at increased throughput to mats or strands occurs.
  • Querstromsichter are for example from the DE 907 145 C and the GB899 449A known.
  • the material to be viewed is placed in a cross-flow of air and settles the material viewed depending on its throw on the sifter or on a sieve.
  • the GB 899 449 A It is envisaged to abandon the material to be sighted arranged on top of each other and a kind of vibrating screen for the material to be sighted guiding devices for the transverse air flow. The screened material is fed to different outlet openings as a function of the width of the chute and the cross-flow of air.
  • the invention has for its object to provide a device for separating coarse and fine material, which provides an improved visual outcome and in particular stratification and mat formation in the classifier zone at least largely avoids.
  • the invention solves this problem in that the at least one outlet opening in order to achieve a Querstromsichtung of the material below the uppermost inlet opening for the classifying air on a side opposite the inlet side of the separator is arranged and that the inlet openings for the classifying air to improve the Querstromsichtung in the conveying direction of the material
  • the lower inlet opening for the Under-air of the separator is preferably directed against the at least one outlet opening.
  • a further improvement of the visual result is obtained if at least three superimposed inlet openings are provided for the classifying air, of which the upper two inlet openings are arranged at least substantially above the at least one outlet opening.
  • the surface normal axes of the material application opening and the outlet opening form an angle of between 90 and 180 °, in particular between 120 and 150 °. Best visible results are achieved with an angle of 130 to 140 °.
  • 180 ° would be the discharge opening for the coarse material and the Outlet opening for removal of classifying air and secured material, for example, arranged laterally offset side by side and separated by a partition wall.
  • the choice of the angle between surface normal axes of the material application opening and the outlet depends in particular on the type of material to be viewed, such as wood, coal, dust, sand od. Like. And on the accuracy of the objective result to be achieved for given proportions of the classifier.
  • dissolving nozzles for the material introduced into the separator are provided in the separator under the material feed opening.
  • the dissolution of the material introduced into the sifter is accordingly preferably not effected by opening rollers, but by means of dissolving nozzles which may be acted upon by tempered compressed air, which provide for a corresponding turbulence of the material supplied to the sifter via the feed opening.
  • dissolving nozzles have the additional effect of slowing the fall of the material into the sifter and thus prolonging the residence time of the material in the sifter.
  • injection angle and / or the distance of the dissolving nozzles directed against the material flow are rotatable and height-adjustable with respect to the material feed opening by means of an adjusting device.
  • the separator Since any risk of surrounding persons or equipment should always be avoided in the case of dust explosions that may occur in such a separator, it is recommended that the separator has upwardly directed explosion flaps on an upper separator wall in the region between the material feed opening and the outlet opening.
  • the separator has upwardly directed explosion flaps on an upper separator wall in the region between the material feed opening and the outlet opening.
  • an adjustable guide device can be provided on a wall of the classifier in the region between the material feed opening and the outlet opening, in particular in the vicinity of the outlet opening, determining the crossflow cross section between inlet openings and outlet opening.
  • This guide causes before the outlet openings a kind of nozzle effect with increased in the restricted cross-section flow rates, which not only adjust the sifting effect, but also can prevent material accumulation in areas in front of the outlet openings.
  • the outlet openings may also be arranged in front of flaps whose angle of attack is adjustable to the view air flow guide transversely to the classifying air flow.
  • a separator according to the invention By provided in a separator according to the invention horizontally or obliquely downwardly directed air flow, a high material throughput can be ensured with good visibility. Since the light fraction is not deflected by 180 ° compared to the usual climatic wind sifters, stratification or matting in the classifier zone is largely ruled out, as a result of which the visual result is considerably improved.
  • a classifier 1 ie a device for separating coarse and fine material in a classifying air stream, comprises a classifier housing 2 with two material feed openings 3 with associated metering devices in the form of two rotary valves 4, three inlet openings 5, 6, 7 arranged one above the other for the classifying air, a plurality of outlet openings 8 for the removal of classifying air and sighted material, and a discharge unit 9 in the form of a discharge screw for the coarse material separated from the classifying air stream.
  • the outlet openings 8 below the uppermost inlet opening 5 for the classifying air on one of the inlet openings 5, 6, 7 opposite side of the classifier 1 are arranged.
  • the inlet openings 5, 6, 7 are to improve the Querstromsichtung in the conveying direction of the material, ie gradually offset in conveyluftstromcardi to the discharge out, with the padsde for the lower air of the classifier inlet opening 7 is directed against the outlet opening 8, to prevent penetration of fine material in to avoid the discharge area for the coarse material and material accumulation in the transition region between the discharge area and outlet openings 8.
  • the angle ⁇ between the surface normal axes of the material feed opening 3 and the outlet openings 8 is in the illustrated embodiment about 135 °.
  • the material discharge opening 3 are associated with drying air introduction openings 10, via which the material introduced into the separator 1 can optionally be subjected to hot air for the purpose of drying immediately after entering the classifier 1.
  • Dissolving nozzles 11 for the material introduced into the sifter 1 are provided below the material application openings 3, which provide dissolution nozzles 11 for a corresponding turbulence of the material introduced into the sifter 1 and thereby dissolve any existing material wads or accumulations.
  • the inlet angle and the distance from the material flow directed dissolution nozzle 11 with respect to the material application openings 3 is adjustable by means of an adjusting device, not shown.
  • the classifier 1 can be associated with a heating device (not shown) for the classifying air or drying air.
  • dust explosion flaps 13 arranged outside of any danger zone are provided, which are aligned upward on an upper classifier wall 14 in the region between material feed openings 3 and outlet openings 8.
  • an upper classifier wall 14 In order to avoid endangering persons in the case of possibly occurring dust explosions, dust explosion flaps 13 arranged outside of any danger zone are provided, which are aligned upward on an upper classifier wall 14 in the region between material feed openings 3 and outlet openings 8.
  • To adjust the flow velocity in front of the outlet openings are on a wall of the classifier 1 in the area between material feed opening 3 and outlet openings 8 in the vicinity of the outlet openings 8 a Querströmungsquerites between inlet openings 5, 6, 7 and outlet openings 8 defining adjustable guide 15 and the outlet openings 8 upstream valves 16 provided, the angle of attack is adjustable to the classifying air flow guide transversely to the classifying airflow.
  • the classifier width is arbitrarily large because of a modular design of the housing arbitrarily large, in order to adjust the device in advance to achieve the material throughput in advance in a simple manner.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Claims (10)

  1. Dispositif pour séparer des matériaux gros et fins dans un courant d'air de séparation d'un séparateur (1), qui comprend au moins une ouverture de chargement de matériau (3), au moins deux ouvertures d'entrée (5, 6, 7), disposées l'une au-dessus de l'autre, pour l'air de séparation, au moins une ouverture de sortie (8) pour l'évacuation de l'air de séparation et de matériau séparé, ainsi qu'un dispositif d'extraction (9) pour le matériau gros séparé, au moins une ouverture de sortie (8) étant disposée en dessous de l'ouverture d'entrée (5) la plus élevée pour l'air de séparation sur un côté, faisant face à l'ouverture d'entrée (5), du séparateur (1), afin d'obtenir une séparation par courant transversal du matériau, caractérisé en ce que les ouvertures d'entrée (5, 6, 7) pour l'air de séparation sont décalées d'une manière étagée afin d'améliorer la séparation par courant transversal dans la direction de transport du matériau, c'est-à-dire dans la direction du courant d'air de séparation vers l'ouverture d'extraction (8), l'ouverture d'entrée (7) inférieure pour l'air inférieur du séparateur étant dirigée de préférence à l'encontre d'au moins une ouverture de sortie (8).
  2. Dispositif selon la revendication 1, caractérisé en ce qu'au moins trois ouvertures d'entrée (5, 6, 7), disposées les unes au-dessus des autres, sont prévues pour l'air de séparation, les deux ouvertures d'entrée (5, 6) supérieures étant disposées au moins essentiellement au-dessus d'au moins une ouverture de sortie (8).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les axes normaux aux faces de l'ouverture de chargement de matériau (3) et de l'ouverture de sortie (8) forment un angle (α) de 90 à 180°, en particulier de 120 à 150°.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que des ouvertures d'introduction de l'air de séchage (10) sont associées à l'ouverture de chargement de matériau (3).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que dans le séparateur (1) sont prévues, sous l'ouverture de chargement de matériau (3), des buses (11) pour le matériau amené dans le séparateur (1).
  6. Dispositif selon la revendication 5, caractérisé en ce que l'angle de soufflage et/ou l'espacement des buses (11) dirigées contre le courant de matériau peut/peuvent être ajusté(s) en ce qui concerne l'ouverture de chargement de matériau (3) à l'aide d'un dispositif de réglage.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce qu'un dispositif de chauffage est associé au séparateur (1) pour l'air de séparation.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que le séparateur (1) présente au niveau d'une paroi supérieure du séparateur (14), dans la zone entre l'ouverture de chargement de matériau (3) et l'ouverture de sortie (8), des clapets d'explosion de poussière (13) dirigés vers le haut.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce qu'au niveau d'une paroi du séparateur (1), dans la zone entre l'ouverture de chargement de matériau (3) et l'ouverture de sortie (8), en particulier dans la zone proche de l'ouverture de sortie (8), il est prévu un dispositif de guidage (15) réglable, définissant la section transversale du courant transversal entre les ouvertures d'entrée (5) et l'ouverture de sortie (8).
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que des clapets (16) sont disposés en amont des ouvertures d'entrée (8), dont l'angle d'orientation peut être ajusté pour l'introduction du courant d'air de séparation transversalement au courant d'air de séparation.
EP07450152.9A 2006-09-18 2007-09-04 Dispositif destiné à séparer des matériaux gros et fins Not-in-force EP1900445B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200620014455 DE202006014455U1 (de) 2006-09-18 2006-09-18 Vorrichtung zum Trennen von Grob- und Feinmaterial

Publications (2)

Publication Number Publication Date
EP1900445A1 EP1900445A1 (fr) 2008-03-19
EP1900445B1 true EP1900445B1 (fr) 2015-08-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07450152.9A Not-in-force EP1900445B1 (fr) 2006-09-18 2007-09-04 Dispositif destiné à séparer des matériaux gros et fins

Country Status (2)

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EP (1) EP1900445B1 (fr)
DE (1) DE202006014455U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016117383A1 (de) 2016-09-15 2018-03-15 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102016117384A1 (de) 2016-09-15 2018-03-15 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102018005205A1 (de) 2018-06-29 2020-01-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter und Verfahren zum Sichten

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20070079A1 (it) * 2007-04-30 2008-11-01 Pal S R L Apparecchiatura e procedimento per separare particelle contaminanti da una massa incoerente di materiale legnoso e/o di fibre vegetali
WO2014201182A1 (fr) * 2013-06-11 2014-12-18 Battelle Memorial Institute Dispositif et procédé de séparation par écoulement croisé
CN105939792B (zh) * 2014-01-31 2019-05-31 蒂森克虏伯工业解决方案股份公司 具有旁路的分离器
DE102017110600B4 (de) * 2017-05-16 2023-09-07 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102017120043B3 (de) 2017-08-31 2018-12-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh Anlage und Verfahren zur Herstellung von beleimten Pflanzenpartikeln
DE102017120033B4 (de) 2017-08-31 2024-02-08 Siempelkamp Maschinen- Und Anlagenbau Gmbh Vorrichtung zur Abtrennung und/oder Gewinnung von Silikatpartikeln aus pflanzlichem Material

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE907145C (de) 1952-08-12 1954-03-22 Benno Schilde Maschb Ag Windsichtverfahren und Windsichter
DE1224132B (de) 1959-11-27 1966-09-01 Standard Filterbau Gmbh Vorrichtung zum Sichten von koernigem Gut in verschiedene Kornklassen
DE3882913T2 (de) * 1987-11-20 1994-03-03 Gen Electric Verfahren und Gerät zur Reinigung von polymerischen Harzteilchen.
US5259510A (en) * 1992-03-31 1993-11-09 Edward Lowe Industries, Inc. Apparatus for separating and removing fine particulates from a particle flow
AT403133B (de) 1996-03-14 1997-11-25 Scheuch Alois Gmbh Sichter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016117383A1 (de) 2016-09-15 2018-03-15 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102016117384A1 (de) 2016-09-15 2018-03-15 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102016117384B4 (de) 2016-09-15 2023-08-10 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102016117383B4 (de) 2016-09-15 2023-09-21 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter
DE102018005205A1 (de) 2018-06-29 2020-01-02 Siempelkamp Maschinen- Und Anlagenbau Gmbh Sichter und Verfahren zum Sichten

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Publication number Publication date
EP1900445A1 (fr) 2008-03-19
DE202006014455U1 (de) 2006-11-16

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