EP0601986A1 - Air deposition chamber - Google Patents

Air deposition chamber Download PDF

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Publication number
EP0601986A1
EP0601986A1 EP93850224A EP93850224A EP0601986A1 EP 0601986 A1 EP0601986 A1 EP 0601986A1 EP 93850224 A EP93850224 A EP 93850224A EP 93850224 A EP93850224 A EP 93850224A EP 0601986 A1 EP0601986 A1 EP 0601986A1
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EP
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Prior art keywords
wind chamber
belt
ceiling
conveyor
belt conveyor
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Granted
Application number
EP93850224A
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German (de)
French (fr)
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EP0601986B1 (en
Inventor
Aarne Laatikainen
Ari Hemmilä
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Metso Panelboard Oy
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Sunds Defibrator Loviisa Oy
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Application filed by Sunds Defibrator Loviisa Oy filed Critical Sunds Defibrator Loviisa Oy
Publication of EP0601986A1 publication Critical patent/EP0601986A1/en
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    • 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
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/14—Distributing or orienting the particles or fibres

Definitions

  • the present invention relates to a wind chamber used in particle board production on the spreading machine according to the preamble of main claim 1.
  • a main phase of the chipboard manufacturing process is the formation of the blank or the so-called spreading.
  • Spreading is done with special spreading machines. With these, a mixture of chips and binders is spread out on a grit belt conveyor to form a uniform, continuous carpet.
  • a typical spreading machine consists of so-called bunkers, floor conveyor, leveling brushes, unloading and distribution devices and a wind chamber.
  • the present invention thus relates to a wind chamber, which consists of a space delimited on the underside of a grit conveyor belt, on the sides of side walls, at the ends of end faces and on the top of a ceiling, in which the chips falling down on the distribution devices with the aid is carried on by air.
  • the air is introduced into the wind chamber through one end wall and removed through the opposite end wall.
  • a problem with the previously known wind chambers is that dust adheres to the ceiling of the wind chamber, from where it from time to time becomes uncontrollable Falls on the surface of the chipboard to be scattered, for example as a result of sufficient growth of the dust layer or accidental vibrations or the like.
  • the piles of dust that have fallen from the ceiling form clearly visible spots on the plate surface that spoil the surface, thereby lowering the quality level.
  • the invention has for its object to provide a wind chamber in which the problems outlined above are avoided. It is characteristic of the invention that the ceiling of the wind chamber is formed from a belt conveyor part.
  • the belt conveyor part is the return side of the floor belt conveyor of the grit bunker.
  • a scraper is attached in the wind chamber in order to remove the dust adhering to the belt conveyor part on the side of the wind chamber.
  • the wind chamber ceiling consists of a moving belt
  • the dust adhering to the belt is conveyed by the belt to the front wall, where the dust is removed from the belt in a controllable manner with the scraper and is conveyed out of the wind chamber by a conveyor, for example a spiral conveyor.
  • a conveyor for example a spiral conveyor.
  • spreading is carried out with special spreading machines.
  • 1 shows a spreading machine from the prior art.
  • a mixture 2 of chips and binders is spread out to form a uniform, continuous carpet 3 on the spreader belt conveyor 4 arranged in the lower part of the spreader and moving in the direction of the arrow.
  • the spreader typically consists of bunker 5, floor conveyor 6 moving in the direction of the arrow, distributor conveyor 1, compensating brushes 7, unloading and distributing devices 8 and wind chamber 9.
  • the wind chamber 9 is a space delimited by grit conveyor belt 4, side walls 10, end faces 11, 12 and ceiling 13, in which the chips falling down on the distribution devices 8 are conveyed further by means of air.
  • the air is led through one end wall 11 into the wind chamber in the manner shown by arrows and removed through the opposite end wall 12 in the way also shown with arrows.
  • the finer chip particles fly furthest in the wind chamber and the coarsest particles become little of the air promoted.
  • a desired particle board structure is created, in which the surface of the plate is formed from an almost dust-like chip distribution and in which the average size of the chips increases towards the center of the plate.
  • the known wind chamber provided with a stationary ceiling 13 according to FIG. 1 therefore has the disadvantage that dust collects on the ceiling and falls from time to time in an uncontrolled manner onto the surface of the particle board.
  • the chamber ceiling is formed by the movable belt conveyor part 14, as which the return side of the floor belt conveyor 6 of the grit bunker is preferably used.
  • the dust adhering to the belt reaches the end wall 12 where the scraper 15 is attached.
  • the scraper 15 is e.g. fastened to the end wall 12 and its task is to scrape off the dust adhering to the belt 14 from the belt.
  • the dust falls into the trough 17, from which it is transported away by the spiral conveyor 16.
  • the scraper 15, the spiral conveyor 16 and the channel 17 preferably extend over the entire width of the belt 14 or at least over the width of the chipboard to be produced.

Abstract

Air deposition chamber (9) used in the manufacture of particle boards on a distributing machine, which chamber is delimited at the underside by a particle conveyor belt (3), at the sides by side walls (10), at the ends by end walls (11, 12) and at the upper side by a ceiling. The invention is designed in such a way that the ceiling of the air deposition chamber (9) is formed by the part (14) of a belt conveyor. <IMAGE>

Description

Die vorliegende Erfindung betrifft eine in der Spanplattenherstellung an der Streumaschine verwendete Windkammer gemäß dem Oberbegriff des Hauptanspruchs 1.The present invention relates to a wind chamber used in particle board production on the spreading machine according to the preamble of main claim 1.

Eine Hauptphase des Spanplattenherstellungsprozesses besteht in der Bildung des Rohlings oder dem sog. Streuen. Das Streuen erfolgt mit speziellen Streumaschinen. Mit diesen wird auf einem Streugutbandförderer ein Gemisch aus Späne und Bindemitteln zu einem gleichmäßigen durchgehenden Teppich ausgebreitet. Eine typische Streumaschine besteht aus sog. Bunker, Bodenbandförderer, Ausgleichsbürsten, Entlade- und Verteilungsvorrichtungen sowie Windkammer.A main phase of the chipboard manufacturing process is the formation of the blank or the so-called spreading. Spreading is done with special spreading machines. With these, a mixture of chips and binders is spread out on a grit belt conveyor to form a uniform, continuous carpet. A typical spreading machine consists of so-called bunkers, floor conveyor, leveling brushes, unloading and distribution devices and a wind chamber.

Die vorliegende Erfindung betrifft also eine Windkammer, die aus einem an der Unterseite von einem Streugutförderband, an den Seiten von Seitenwänden, an den Enden von Stirnseiten und an der Oberseite von einer Decke begrenzten Raum besteht, in dem die an den Verteilungsvorrichtungen herunterfallede Späne mit Hilfe von Luft weiter befördert wird. Die Luft wird durch die eine Stirnwand in die Windkammer eingeführt und durch die entgegengesetzte Stirnwand entfernt.The present invention thus relates to a wind chamber, which consists of a space delimited on the underside of a grit conveyor belt, on the sides of side walls, at the ends of end faces and on the top of a ceiling, in which the chips falling down on the distribution devices with the aid is carried on by air. The air is introduced into the wind chamber through one end wall and removed through the opposite end wall.

Die feinsten Späneteilchen fliegen in der Windkammer am weitesten und die gröbsten werden nur wenig von der Luft befördert. Auf diese Weise entsteht eine gewünschte Spanplattenstruktur, in der die Oberfläche aus einer fast staubartigen Späneverteilung gebildet wird während die durchschnittliche Größe der Späne zur Mitte der Platte hinzunimmt.The finest chip particles fly furthest in the wind chamber and the coarsest particles are only slightly transported by the air. This creates a desired particle board structure in which the surface is formed from an almost dust-like chip distribution while the average size of the chips increases towards the center of the board.

Ein Problem bei den bisher bekannten Windkammern besteht darin, daß sich an die Decke der Windkammer schwebender Staub heftet, von wo dieser von Zeit zu Zeit in unkontrollierbarer Weise auf die Oberfläche der zu streuenden Spanplatte herabfällt, z.B. infolge ausreichenden Anwachsens der Staubschicht oder zufälliger Vibrationen oder dergleichen. Die von der Decke gefallenen Staubhäufchen bilden auf der Plattenfläche deutlich sichtbare Flecken, die die Oberfläche verderben, wodurch das Qualitätsniveau gesenkt wird.A problem with the previously known wind chambers is that dust adheres to the ceiling of the wind chamber, from where it from time to time becomes uncontrollable Falls on the surface of the chipboard to be scattered, for example as a result of sufficient growth of the dust layer or accidental vibrations or the like. The piles of dust that have fallen from the ceiling form clearly visible spots on the plate surface that spoil the surface, thereby lowering the quality level.

Der Erfindung liegt die Aufgabe zugrunde, eine Windkammer zu schaffen, bei der die oben gestreiften Probleme vermieden werden. Für die Erfindung ist charakteristisch, daß die Decke der Windkammer aus einem Bandfördererteil gebildet wird.The invention has for its object to provide a wind chamber in which the problems outlined above are avoided. It is characteristic of the invention that the ceiling of the wind chamber is formed from a belt conveyor part.

Für eine Ausführungsform der Erfindung ist charakteristisch, daß der Bandfördererteil die Rücklaufseite des Bodenbandförderers des Streugutbunkers ist.It is characteristic of one embodiment of the invention that the belt conveyor part is the return side of the floor belt conveyor of the grit bunker.

Für eine zweite Ausführungsform der Erfindung ist charakteristisch, daß zum Entfernen des auf der Seite der Windkammer sich an den Bandfördererteil heftenden Staubes in der Windkammer ein Schaber angebracht ist.It is characteristic of a second embodiment of the invention that a scraper is attached in the wind chamber in order to remove the dust adhering to the belt conveyor part on the side of the wind chamber.

Für eine weitere Ausführungsform der Erfindung ist charakteristisch, daß um den mit dem Schaber vom Bandfördererteil gelösten Staub aus der Windkammer zu entfernen, am Schaber auf dessen Unterseite ein in einer Rinne untergebrachter Spiralförderer angebracht ist.It is characteristic of a further embodiment of the invention that in order to remove the dust loosened from the belt conveyor part by the scraper from the wind chamber, a spiral conveyor accommodated in a trough is attached to the underside of the scraper.

Weil die Windkammerdecke aus einem sich bewegenden Band besteht, wird der am Band haftende Staub mit dem Band zur Stirnwand befördert, wo der Staub in kontrollierbarer Weise mit dem Schaber vom Band entfernt und mit einem Förderer, z.B. Spiralförderer, aus der Windkammer heraus befördert wird. An dem ständig laufenden Band kann sich keine so große Staubschicht ansammeln, die beim Herunterfallen die Oberfläche der Spanplatte verderben würde.Because the wind chamber ceiling consists of a moving belt, the dust adhering to the belt is conveyed by the belt to the front wall, where the dust is removed from the belt in a controllable manner with the scraper and is conveyed out of the wind chamber by a conveyor, for example a spiral conveyor. No large layer of dust can accumulate on the continuously running belt, which would spoil the surface of the chipboard if it fell off.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen ausführlich beschrieben unter Hinweis auf die beigefügten Zeichnungen, in denen

  • Fig. 1 schematisch und von der Seite gesehen eine mit einer Windkammer vom Stand der Technik versehene Streumaschine zeigt,
  • Fig. 2 eine mit einer erfindungsgemäßen Windkammer versehene Streumaschine zeigt.
In the following the invention is described in detail by means of embodiments with reference to the accompanying drawings, in which
  • 1 shows schematically and seen from the side a spreading machine provided with a wind chamber from the prior art,
  • 2 shows a spreading machine provided with a wind chamber according to the invention.

In der Spanplattenherstellung wird das Streuen mit besonderen Streumaschinen durchgeführt. Fig. 1 zeigt eine Streumaschine vom Stand der Technik. Mit der Streumaschine wird ein Gemisch 2 aus Spänen und Bindemitteln zu einem gleichmäßigen durchgehenden Teppich 3 auf dem im unteren Teil der Streumaschine angeordneten, sich in Richtung des Pfeils bewegenden Streugutbandförderer 4 ausgebreitet.In chipboard production, spreading is carried out with special spreading machines. 1 shows a spreading machine from the prior art. With the spreader, a mixture 2 of chips and binders is spread out to form a uniform, continuous carpet 3 on the spreader belt conveyor 4 arranged in the lower part of the spreader and moving in the direction of the arrow.

Die Streumaschine besteht typischerweise aus Bunker 5, in Pfeilrichtung sich bewegenden Bodenbandförderer 6, Verteilerförderer 1, Ausgleichsbürsten 7, Entlade- und Verteilungsvorrichtungen 8 sowie Windkammer 9.The spreader typically consists of bunker 5, floor conveyor 6 moving in the direction of the arrow, distributor conveyor 1, compensating brushes 7, unloading and distributing devices 8 and wind chamber 9.

Die Windkammer 9 ist ein von Streugutförderband 4, Seitenwänden 10, Stirnseiten 11, 12 und Decke 13 begrenzter Raum, in dem die an den Verteilungsvorrichtungen 8 herunterfallende Späne mit Hilfe von Luft weiter befördert wird. Die Luft wird durch die eine Stirnwand 11 in der durch Pfeile dargestellten Weise in die Windkammer geführt und durch die entgegengestzte Stirnwand 12 in der ebenfalls durch Pfeile gezeigten Weise entfernt.The wind chamber 9 is a space delimited by grit conveyor belt 4, side walls 10, end faces 11, 12 and ceiling 13, in which the chips falling down on the distribution devices 8 are conveyed further by means of air. The air is led through one end wall 11 into the wind chamber in the manner shown by arrows and removed through the opposite end wall 12 in the way also shown with arrows.

Die feineren Spanpartikel fliegen in der Windkammer am weitesten und die gröbsten werden nur wenig von der Luft befördert. Auf diese Weise entsteht eine gewünschte Spanplattenstruktur, in der die Oberfläche der Platte aus einer fast staubartigen Spanverteilung gebildet wird und bei der die durchschnittliche Größe der Späne zur Mitte der Platte hin zunimmt.The finer chip particles fly furthest in the wind chamber and the coarsest particles become little of the air promoted. In this way, a desired particle board structure is created, in which the surface of the plate is formed from an almost dust-like chip distribution and in which the average size of the chips increases towards the center of the plate.

Die bekannte, mit stationärer Decke 13 versehene Windkammer nach Fig. 1 hat also den Nachteil, daß sich Staub an der Decke ansammelt und von Zeit zu Zeit unkontrolliert auf die Oberfläche der Spanplatte fällt.The known wind chamber provided with a stationary ceiling 13 according to FIG. 1 therefore has the disadvantage that dust collects on the ceiling and falls from time to time in an uncontrolled manner onto the surface of the particle board.

In Fig. 2 ist eine Streumaschine gezeigt, die mit einer erfindungsgemäßen Windkammer ausgerüstet ist. Die Maschine ist bis auf die Konstruktion der Windkammer 9 die gleiche wie in Fig. 1, weshalb unter Hinweis auf Fig. 2 nur die Windkammerkonstruktion erläutert wird. In der erfindungsgemäßen Windkammer 9 wird die Kammerdecke von dem beweglichen Bandfördererteil 14 gebildet, als welcher vorzugsweise die Rücklaufseite des Bodenbandförderers 6 des Streugutbunkers verwendet wird.2 shows a scattering machine which is equipped with a wind chamber according to the invention. Except for the construction of the wind chamber 9, the machine is the same as in FIG. 1, which is why only the wind chamber construction is explained with reference to FIG. 2. In the wind chamber 9 according to the invention, the chamber ceiling is formed by the movable belt conveyor part 14, as which the return side of the floor belt conveyor 6 of the grit bunker is preferably used.

Weil als Decke das bewegliche Band 14 dient, gelangt der am Band haftende Staub mit dem Band neben die Stirnwand 12, wo der Schaber 15 angebracht ist. Der Schaber 15 ist z.B. an der Stirnwand 12 bebfestigt und seine Aufgabe besteht darin, den am Band 14 haftenden Staub von dem Band abzuschaben. Dabei fällt der Staub in die Rinne 17, aus welcher er mit dem Spiralförderer 16 forttransportiert wird. Der Schaber 15, der Spiralförderer 16 und die Rinne 17 erstrecken sich vorzugsweise über die ganze Breite des Bandes 14 oder zumindest über die Breite der herzustellenden Spanplatte.Because the movable belt 14 serves as a ceiling, the dust adhering to the belt reaches the end wall 12 where the scraper 15 is attached. The scraper 15 is e.g. fastened to the end wall 12 and its task is to scrape off the dust adhering to the belt 14 from the belt. The dust falls into the trough 17, from which it is transported away by the spiral conveyor 16. The scraper 15, the spiral conveyor 16 and the channel 17 preferably extend over the entire width of the belt 14 or at least over the width of the chipboard to be produced.

Dem Fachmann ist klar, daß die Erfindung nicht auf die im vorstehenden beschriebenen Ausführungsbeispiele begrenzt ist, sondern daß sie im Rahmen der beigefügten Patentansprüche variiert werden kann. Im vorstehenden wurde erwähnt, daß der Schaber 15 beispielsweise an der Stirnwand 12 befestigt ist. Es ist natürlich klar, daß jede andere denkbare Lösung hinsichtlich der Befestigung des Schabers 15, des Spiralförderers 16 wie auch der Rinne 17 möglich ist. Wesentlich ist, daß diese in der Nähe der Stirnwand 12 untergebracht sind.It is clear to the person skilled in the art that the invention is not limited to the exemplary embodiments described above, but that it can be varied within the scope of the appended claims. In the foregoing mentions that the scraper 15 is attached to the end wall 12, for example. It is of course clear that any other conceivable solution with regard to the attachment of the scraper 15, the spiral conveyor 16 and the channel 17 is possible. It is essential that these are housed near the end wall 12.

Claims (4)

In der Spanplattenfertigung an der Streumaschine verwendete Windkammer (9), die an der Unterseite von einem Streugutförderband (3), an den Seiten von Seitenwänden (10), an den Enden von Stirnseiten (11, 12) und an der Oberseite von einer Decke begrenzt wird, dadurch gekennzeichnet, daß die Decke der Windkammer (9) aus dem Teil (14) eines Bandförderers gebildet wird.Wind chamber (9) used in chipboard production on the spreader, bounded on the underside by a grit conveyor belt (3), on the sides by side walls (10), at the ends by end faces (11, 12) and on the top by a ceiling is characterized in that the ceiling of the wind chamber (9) is formed from the part (14) of a belt conveyor. Windkammer nach Anspruch 1, dadurch gekennzeichnet, daß der Bandfördererteil die Rücklaufseite (14) des Bodenbandförderers (6) des Streugutbunkers (5) ist.Wind chamber according to claim 1, characterized in that the belt conveyor part is the return side (14) of the floor belt conveyor (6) of the grit bunker (5). Windkammer nach Anspruch 1 und 2, dadurch gekennzeichnet, daß zum Entfernen des auf der Seite der Windkammer (9) sich an den Bandfördererteil (14) heftenden Staubes in der Windkammer ein Schaber (15) angebracht ist.Wind chamber according to Claims 1 and 2, characterized in that a scraper (15) is attached in the wind chamber to remove the dust adhering to the belt conveyor part (14) on the side of the wind chamber (9). Windkammer nach Anspruch 3, dadurch gekennzeichnet, daß, um den mit dem Schaber (15) vom Bandfördererteil (14) gelösten Staub aus der Windkammer zu entfernen, am Schaber auf dessen Unterseite ein in einer Rinne (17) untergebrachter Spiralförderer (16) angebracht ist.Wind chamber according to claim 3, characterized in that, in order to remove the dust loosened with the scraper (15) from the belt conveyor part (14) from the wind chamber, a spiral conveyor (16) accommodated in a trough (17) is attached to the underside of the scraper .
EP93850224A 1992-12-08 1993-12-02 Air deposition chamber Revoked EP0601986B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI925575A FI97113C (en) 1992-12-08 1992-12-08 Blow chambers
FI925575 1992-12-08

Publications (2)

Publication Number Publication Date
EP0601986A1 true EP0601986A1 (en) 1994-06-15
EP0601986B1 EP0601986B1 (en) 1996-01-03

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EP93850224A Revoked EP0601986B1 (en) 1992-12-08 1993-12-02 Air deposition chamber

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EP (1) EP0601986B1 (en)
AT (1) ATE132419T1 (en)
DE (1) DE59301329D1 (en)
ES (1) ES2083268T3 (en)
FI (1) FI97113C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010508A1 (en) * 1998-12-14 2000-06-21 G. SIEMPELKAMP GmbH & Co. Roller screen or spreading machine
DE102020005686A1 (en) 2020-09-17 2022-03-17 Siempelkamp Maschinen- Und Anlagenbau Gmbh wind spreading device
DE102020005687A1 (en) 2020-09-17 2022-03-17 Siempelkamp Maschinen- Und Anlagenbau Gmbh wind spreading device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801243A (en) * 1972-05-16 1974-04-02 Johns Manville Apparatus for producing a mat
DE2407745A1 (en) * 1973-03-09 1974-09-12 Fahrni Peter DEVICE FOR STORAGE AND DOSING DISCHARGE OF SPREADABLE MATERIAL
DE2535382A1 (en) * 1975-08-08 1977-02-10 Siempelkamp Gmbh & Co SPREADING MACHINE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3801243A (en) * 1972-05-16 1974-04-02 Johns Manville Apparatus for producing a mat
DE2407745A1 (en) * 1973-03-09 1974-09-12 Fahrni Peter DEVICE FOR STORAGE AND DOSING DISCHARGE OF SPREADABLE MATERIAL
DE2535382A1 (en) * 1975-08-08 1977-02-10 Siempelkamp Gmbh & Co SPREADING MACHINE

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1010508A1 (en) * 1998-12-14 2000-06-21 G. SIEMPELKAMP GmbH & Co. Roller screen or spreading machine
DE102020005686A1 (en) 2020-09-17 2022-03-17 Siempelkamp Maschinen- Und Anlagenbau Gmbh wind spreading device
DE102020005687A1 (en) 2020-09-17 2022-03-17 Siempelkamp Maschinen- Und Anlagenbau Gmbh wind spreading device
DE102020005687B4 (en) 2020-09-17 2022-03-24 Siempelkamp Maschinen- Und Anlagenbau Gmbh wind spreading device
DE102020005686B4 (en) 2020-09-17 2022-05-05 Siempelkamp Maschinen- Und Anlagenbau Gmbh wind spreading device

Also Published As

Publication number Publication date
ATE132419T1 (en) 1996-01-15
FI97113B (en) 1996-07-15
FI97113C (en) 1996-10-25
FI925575A (en) 1994-06-09
FI925575A0 (en) 1992-12-08
DE59301329D1 (en) 1996-02-15
ES2083268T3 (en) 1996-04-01
EP0601986B1 (en) 1996-01-03

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