EP0730832A1 - Device for the removal of the excess of air in a distributor of the tobacco industry - Google Patents

Device for the removal of the excess of air in a distributor of the tobacco industry Download PDF

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Publication number
EP0730832A1
EP0730832A1 EP96102782A EP96102782A EP0730832A1 EP 0730832 A1 EP0730832 A1 EP 0730832A1 EP 96102782 A EP96102782 A EP 96102782A EP 96102782 A EP96102782 A EP 96102782A EP 0730832 A1 EP0730832 A1 EP 0730832A1
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EP
European Patent Office
Prior art keywords
air
tobacco
chamber
air inlet
suction
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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.)
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Application number
EP96102782A
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German (de)
French (fr)
Inventor
Peter Brand
Andreas Dr. Ducci
Wolfgang Steiniger
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Koerber Technologies GmbH
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Hauni Maschinenbau GmbH
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Filing date
Publication date
Application filed by Hauni Maschinenbau GmbH filed Critical Hauni Maschinenbau GmbH
Publication of EP0730832A1 publication Critical patent/EP0730832A1/en
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod

Definitions

  • the invention relates to a device for removing excess process air from a chamber delimited by concave wall sections for generating a fluidized bed flow of a tobacco / air mixture moving along the chamber wall in order to form a tobacco rod made up into a rod of smoking articles.
  • Devices of the type mentioned above are usually used in machines in the tobacco processing industry where blown air is used to support or reinforce a tobacco-promoting or accelerating component, the excess of which has to be removed again from a quasi-closed system, such as the cigarette machine distributor.
  • the invention has for its object a largely to create trouble-free and maintenance-free air circulation system of a tobacco processing rod machine.
  • this object is achieved by a stationary air extraction system installed essentially in the area of the chamber center.
  • fine particles or dust components of the tobacco flow which are subject to the centrifugal force, are held on the concave chamber wall and, if necessary, guided around until they are included in the strand structure.
  • the excess process air drawn off centrally remains unaffected by such dust components.
  • An optimal embodiment consists in that the air suction is designed as a tubular body which has an air inlet on the underside or facing away from the ceiling wall section of the chamber. In this way it is prevented that tobacco falling from the upper chamber wall interferes with the air suction when the strand formation process (so-called strand stopper) is interrupted.
  • the air inlet of the tubular body is expediently equipped with sieve openings. Uniform air extraction over the entire distributor width (perpendicular to the plane of the drawing) is achieved according to a further development in that the air inlet merges into a slit nozzle that narrows towards the tube center.
  • the advantage achieved by the invention is that a clean separation of tobacco or smaller tobacco particles, such as tobacco dust, and conveying air already takes place in the distributor chamber preparing the strand assembly, so that largely dust-free conveying air can be returned to the circulating air system.
  • the lower dust pollution of the exhaust air achieved in this way can be used, for example failure-prone, maintenance-intensive fine dust filters and the like can be dispensed with.
  • the drawing shows a section through part of a distributor of a cigarette rod machine of the type PROTOS, which is widely used and known in the tobacco processing industry.
  • the tobacco supply upstream of the part of the distributor shown and the removal of the tobacco from the tobacco supply are widely known, for example from DE-OS 42 40 459, and do not require any description here.
  • the drawing shows a storage chute 1 with a tobacco supply 2 and a removal device 3, which consists of a rotating removal roller 4 and a faster rotating beater roller 6.
  • the visible air flow separates the light tobacco fibers 8 from the heavier tobacco fibers 9 (tobacco ribs) and transports them transversely in the direction of arrow 16.
  • Some light tobacco fibers 8 sink down with the heavier tobacco ribs 9. You get through a rotary valve 17 into a viewing shaft 18 in which the heavier tobacco ribs 9 sink further down and are discharged, while the lighter tobacco fibers 8 due to the injector effect of a blown air jet a blowing air nozzle 21 arranged in a pressure chamber 19 rise up and are returned to the stream of light fibers 8.
  • the tobacco fibers in the example shown are transferred to a guideway in the form of a curved guide surface 24 of a distribution chamber 26 delimited by concave wall sections, on which they loosened up a thin stream of tobacco 27 (exaggerated in the drawing) and spread tobacco fibers, with blown air and tobacco fibers forming a wall flow moving closely along the guide surface 24.
  • a blower air nozzle 28 is provided in a pressure chamber 29 and optionally further blower air nozzles arranged in the course of the guide surface 24 and not shown in the drawing are provided.
  • the loosened and spreading tobacco stream 27 arrives in a strand build-up zone 31 to a suction strand conveyor 32, to which a suction draft for forming and holding a tobacco strand 34 is applied from the rear by the suction effect of a vacuum chamber 33, suction air the strand 34 and the air-permeable suction strand conveyor 32 flows through.
  • Excess blown air supplied via said blown air nozzles 14, 21, 22 and 28 escapes via a stationary air suction 36 arranged in the center of the distribution chamber 26.
  • the air suction 36 consists of a tubular body 37 which has an end on its underside or the top wall section of the distribution chamber 26 an air inlet 38 is provided which has sieve openings 39.
  • the air inlet 38 merges into a slit nozzle 41 which narrows towards the inner tube center and extends over the entire width (perpendicular to the plane of the drawing) of the distributor chamber 26.
  • the interior of the tubular body 37 and the vacuum chamber 33 of the suction line conveyor 32 are via air lines 42 and 43 with the suction side and the pressure chambers 13, 19, 23 and 29 via air lines 44 and 46 or 47 and 48 with the pressure side of a not shown Blower connected within a closed air recirculation system.
  • the suction line conveyor 32 which is designed as an air-permeable conveyor belt, runs in a tobacco channel 49 which is laterally delimited by two channel cheeks 51.
  • the end section 52 of the guide surface 24 is aligned with one of the channel cheeks 51, so that a seamless, smooth transition of the guide surface to the tobacco channel 49 is ensured.
  • the end section 52 of the guide surface 24 is designed as a guide body 54 which can be pivoted about a pivot axis 53 in order to ensure better accessibility of the device in the event of faults.
  • the tobacco fibers 8 fed through the channel 11 are deflected by the blown air stream out of the nozzle 14, ribs 9 being separated. Blown air flows from the nozzles 21 and 22 convey the deflected fiber flow, conveying the undeflected light tobacco fibers 8 to the guide surface 24, along which it is conveyed from the nozzle 28 into the tobacco channel 49 and to the suction line conveyor 32 with the aid of the blown air flow.
  • the tobacco fibers are held as rod 34 on the moving suction rod conveyor 32 and conveyed away perpendicular to the plane of the drawing.
  • the tobacco rod is then wrapped in cigarette paper in a rod unit (not shown) of the cigarette rod machine and the latter is glued in an edge area. Cigarettes are then continuously cut from the endless cigarette rod thus formed.

Landscapes

  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

The tobacco and air mixture is produced in a compartment with concave walls along which the fluidised bed current flows, for producing a line of tobacco for making into a smoking product. A stationary air suction tube (36) is positioned in the centre of the compartment. The tube has an air inlet (38) on its underside, facing away from the top wall section of the compartment (26). The air inlet has sieve openings (39). The air inlet leads into a slot nozzle (41) narrowing towards the centre of the tube.

Description

Die Erfindung betrifft eine Einrichtung zum Abführen überschüssiger Prozeßluft aus einer von konkaven Wandabschnitten begrenzten Kammer zum Erzeugen einer an der Kammerwand entlangbewegten Fließbettströmung eines Tabak/Luft-Gemisches zwecks Bildung eines zu einem Rauchartikelstrang konfektionierten Tabakstranges.The invention relates to a device for removing excess process air from a chamber delimited by concave wall sections for generating a fluidized bed flow of a tobacco / air mixture moving along the chamber wall in order to form a tobacco rod made up into a rod of smoking articles.

Einrichtungen der obengenannten Art werden in Maschinen der tabakverarbeitenden Industrie üblicherweise dort eingesetzt, wo zur Unterstützung bzw. Verstärkung einer den Tabak fördernden bzw. beschleunigenden Komponente Blasluft verwendet wird, deren Überschuß aus einem quasi geschlossenen System, wie dem Zigarettenmaschinenverteiler, wieder abgeführt werden muß.Devices of the type mentioned above are usually used in machines in the tobacco processing industry where blown air is used to support or reinforce a tobacco-promoting or accelerating component, the excess of which has to be removed again from a quasi-closed system, such as the cigarette machine distributor.

Besonders wichtig ist eine ausgeglichene Luftbilanz in einem überwiegend oder ausschließlich mit Saug- und Blasluft arbeitenden Fördersystem, wie dem sogenannten Fließbettverteiler einer Zigarettenstrangmaschine, in welchem ein die Strangbildung vorbereitender Tabakstrom entlang einer gekrümmten Wand aufgebaut wird, in die zusätzlich parallel gerichtete Blasluftschlitze einmünden.It is particularly important to have a balanced air balance in a conveyor system that works predominantly or exclusively with suction and blown air, such as the so-called fluid bed distributor of a cigarette rod machine, in which a tobacco stream that prepares the strands is built up along a curved wall, into which blow air vents also directed in parallel flow.

Bei einem in der US-PS 5 148 816 offenbarten Fördersystem dieser Art erfolgt die Entlüftung über den mit einem Luftabzugssieb ausgestatteten oberen Wandabschnitt der Kammer.In a conveyor system of this type disclosed in US Pat. No. 5,148,816, ventilation takes place via the upper wall section of the chamber equipped with an air extraction screen.

Gemäß der US-PS 4 463 768 wird die überschüssige Förderluft über Radialbohrungen einer umlaufenden Förderwalze abgeführt.According to US Pat. No. 4,463,768, the excess conveying air is discharged via radial bores in a rotating conveying roller.

Der Erfindung liegt die Aufgabe zugrunde, ein weitgehend störungs- und wartungsfrei arbeitendes Umluftsystem einer tabakverarbeitenden Strangmaschine zu schaffen.The invention has for its object a largely to create trouble-free and maintenance-free air circulation system of a tobacco processing rod machine.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine im wesentlichen im Bereich des Kammerzentrums installierte stationäre Luftabsaugung. Auf diese Weise werden der Fliehkraft unterliegende Feinpartikel bzw. Staubanteile des Tabakstromes an der konkaven Kammerwandung gehalten und gegebenenfalls so lange herumgeführt, bis sie in den Strangaufbau mit einbezogen werden. Dadurch bleibt die zentral abgezogene überschüssige Prozeßluft unbelastet von derartigen Staubanteilen.
Eine optimale Ausgestaltung besteht darin, daß die Luftabsaugung als Rohrkörper ausgebildet ist, welcher einen unterseitigen bzw. dem Deckenwandabschnitt der Kammer abgewandten Lufteinlaß aufweist. Auf diese Weise wird verhindert, daß bei der Unterbrechung des Strangbildungsprozesses (sogenannte Strangstopper) von der oberen Kammerwandung abfallender Tabak die Luftabsaugung behindert.
Zweckmäßigerweise ist der Lufteinlaß des Rohrkörpers mit Sieböffnungen ausgestattet.
Eine gleichmäßige Luftabsaugung über die gesamte Verteilerbreite (senkrecht zur Zeichenebene) wird nach einer Weiterbildung dadurch erreicht, daß der Lufteinlaß in eine sich zum Rohrzentrum hin verengende Schlitzdüse übergeht.According to the invention, this object is achieved by a stationary air extraction system installed essentially in the area of the chamber center. In this way, fine particles or dust components of the tobacco flow, which are subject to the centrifugal force, are held on the concave chamber wall and, if necessary, guided around until they are included in the strand structure. As a result, the excess process air drawn off centrally remains unaffected by such dust components.
An optimal embodiment consists in that the air suction is designed as a tubular body which has an air inlet on the underside or facing away from the ceiling wall section of the chamber. In this way it is prevented that tobacco falling from the upper chamber wall interferes with the air suction when the strand formation process (so-called strand stopper) is interrupted.
The air inlet of the tubular body is expediently equipped with sieve openings.
Uniform air extraction over the entire distributor width (perpendicular to the plane of the drawing) is achieved according to a further development in that the air inlet merges into a slit nozzle that narrows towards the tube center.

Der mit der Erfindung erzielte Vorteil besteht darin, daß eine saubere Trennung von Tabak bzw. kleineren Tabakpartikeln, wie Tabakstaub, und Förderluft bereits in der den Strangaufbau vorbereitenden Verteilerkammer erfolgt, so daß weitgehend vom Staub befreite Förderluft in das Umluftsystem zurückgeführt werden kann. Durch die auf diese Weise erzielte geringere Staubbelastung der Abluft kann zum Beispiel auf den Einsatz störungsanfälliger, wartungsintensiver Feinstaubfilter und dergleichen verzichtet werden.The advantage achieved by the invention is that a clean separation of tobacco or smaller tobacco particles, such as tobacco dust, and conveying air already takes place in the distributor chamber preparing the strand assembly, so that largely dust-free conveying air can be returned to the circulating air system. The lower dust pollution of the exhaust air achieved in this way can be used, for example failure-prone, maintenance-intensive fine dust filters and the like can be dispensed with.

Die Erfindung wird anhand des in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail with reference to the embodiment shown in the drawing.

Die Zeichnung zeigt einen Schnitt durch einen Teil eines Verteilers einer Zigarettenstrangmaschine vom in der tabakverarbeitenden Industrie weit verbreiteten und bekannten Typ PROTOS.
Die dem dargestellten Teil des Verteilers vorgeschaltete Tabakzufuhr zu einem Vorrat und die Entnahme des Tabaks aus dem Tabakvorrat sind vielfältig bekannt, beispielsweise durch die DE-OS 42 40 459, und bedürfen hier keiner Beschreibung.The drawing shows a section through part of a distributor of a cigarette rod machine of the type PROTOS, which is widely used and known in the tobacco processing industry.
The tobacco supply upstream of the part of the distributor shown and the removal of the tobacco from the tobacco supply are widely known, for example from DE-OS 42 40 459, and do not require any description here.

Die Zeichnung zeigt einen Stauschacht 1 mit einem Tabakvorrat 2 und einer Entnahmevorrichtung 3, welche aus einer rotierenden Entnahmewalze 4 und einer schneller rotierenden Schlägerwalze 6 besteht. Der von der Entnahmevorrichtung 3 aus dem Stauschacht 1 entnommene Schauer 7 aus Tabakfasern, der leichte Tabakfasern 8 und schwerere Tabakfasern (Rippen) 9 enthält, gelangt in einen sich trichterförmig verengenden Zuführfallschacht in Form eines Kanals 11, indem eine in einer Umlenkzone 12 in einer Druckkammer 13 angeordnete Blasdüse 14 einen Sichtluftstrom quer zur Förderrichtung des Tabakschauers 7 bläst. Der Sichtluftstrom trennt die leichten Tabakfasern 8 von den schwereren Tabakfasern 9 (Tabakrippen) und fördert sie quer in Richtung des Pfeils 16 ab. Einige leichte Tabakfasern 8 sinken mit den schwereren Tabakrippen 9 nach unten. Sie gelangen durch eine Zellenradschleuse 17 in einen Sichtschacht 18, in dem die schwereren Tabakrippen 9 weiter nach unten sinken und ausgetragen werden, während die leichteren Tabakfasern 8 infolge der Injektorwirkung eines Blasluftstrahls aus einer in einer Druckkammer 19 angeordneten Blasluftdüse 21 nach oben steigen und in den Strom der leichten Fasern 8 zurückgeführt werden. Mit Unterstützung einer weiteren Blasluftdüse 22 in einer Druckkammer 23 werden die Tabakfasern im dargestellten Beispiel auf eine Führungsbahn in Gestalt einer gekrümmten Führungsfläche 24 einer von konkaven Wandabschnitten begrenzten Verteilerkammer 26 überführt, auf der sie einen dünnen Tabakstrom 27 (in der Zeichnung übertrieben dargestellt) aus aufgelockerten und ausgebreiteten Tabakfasern bilden, wobei sich Blasluft und Tabakfasern zu einer dicht an der Führungsfläche 24 entlangebewegten Wandströmung ausbilden. Zur Unterstützung der weiteren Förderung des ausgebreiteten und aufgelockerten Tabakstroms 27 an der Führungsfläche 24 entlang sind eine Blasluftdüse 28 in einer Druckkamemr 29 sowie gegebenenfalls weitere im Verlauf der Führungsfläche 24 angeordnete, in der Zeichnung nicht dargestellte Blasluftdüsen vorgesehen.
Der aufgelockerte und ausgebreitete Tabakstrom 27 gelangt in einer Strangaufbauzone 31 zu einem Saugstrangförderer 32, an den durch die Saugwirkung einer Unterdruckkammer 33 von der Rückseite her ein Saugzug zum Bilden und Halten eines Tabakstranges 34 angelegt ist, wobei Saugluft den Strang 34 und den luftdurchlässigen Saugstrangförderer 32 durchströmt. Überschüssige über die genannten Blasluftdüsen 14, 21, 22 und 28 zugeführte Blasluft entweicht über eine im Zentrum der Verteilerkammer 26 angeordnete stationäre Luftabsaugung 36. Die Luftabsaugung 36 besteht aus einem Rohrkörper 37, der an seinem unterseitigen bzw. dem Deckenwandabschnitt der Verteilerkammer 26 abgewandten Ende mit einem Lufteinlaß 38 versehen ist, welcher Sieböffnungen 39 aufweist. Der Lufteinlaß 38 geht in eine sich zum inneren Rohrzentrum hin verengende Schlitzdüse 41 über, die sich über die gesamte Breite (senkrecht zur Zeichenebene) der Verteilerkammer 26 erstreckt.The drawing shows a storage chute 1 with a tobacco supply 2 and a removal device 3, which consists of a rotating removal roller 4 and a faster rotating beater roller 6. The shower 7 of tobacco fibers removed from the stowage shaft 1 by the removal device 3, which contains light tobacco fibers 8 and heavier tobacco fibers (ribs) 9, enters a funnel-shaped feed chute in the form of a channel 11 by one in a deflection zone 12 in a pressure chamber 13 arranged blowing nozzle 14 blows a flow of viewing air transversely to the conveying direction of the tobacco shower 7. The visible air flow separates the light tobacco fibers 8 from the heavier tobacco fibers 9 (tobacco ribs) and transports them transversely in the direction of arrow 16. Some light tobacco fibers 8 sink down with the heavier tobacco ribs 9. You get through a rotary valve 17 into a viewing shaft 18 in which the heavier tobacco ribs 9 sink further down and are discharged, while the lighter tobacco fibers 8 due to the injector effect of a blown air jet a blowing air nozzle 21 arranged in a pressure chamber 19 rise up and are returned to the stream of light fibers 8. With the support of another blowing air nozzle 22 in a pressure chamber 23, the tobacco fibers in the example shown are transferred to a guideway in the form of a curved guide surface 24 of a distribution chamber 26 delimited by concave wall sections, on which they loosened up a thin stream of tobacco 27 (exaggerated in the drawing) and spread tobacco fibers, with blown air and tobacco fibers forming a wall flow moving closely along the guide surface 24. To support the further promotion of the spread and loosened tobacco flow 27 along the guide surface 24, a blower air nozzle 28 is provided in a pressure chamber 29 and optionally further blower air nozzles arranged in the course of the guide surface 24 and not shown in the drawing are provided.
The loosened and spreading tobacco stream 27 arrives in a strand build-up zone 31 to a suction strand conveyor 32, to which a suction draft for forming and holding a tobacco strand 34 is applied from the rear by the suction effect of a vacuum chamber 33, suction air the strand 34 and the air-permeable suction strand conveyor 32 flows through. Excess blown air supplied via said blown air nozzles 14, 21, 22 and 28 escapes via a stationary air suction 36 arranged in the center of the distribution chamber 26. The air suction 36 consists of a tubular body 37 which has an end on its underside or the top wall section of the distribution chamber 26 an air inlet 38 is provided which has sieve openings 39. The air inlet 38 merges into a slit nozzle 41 which narrows towards the inner tube center and extends over the entire width (perpendicular to the plane of the drawing) of the distributor chamber 26.

Der Innenraum des Rohrkörpers 37 und die Unterdruckkammer 33 des Saugstrangförderers 32 stehen über Luftleitungen 42 bzw. 43 mit der Saugseite und die Druckkammern 13, 19, 23 sowie 29 über Luftleitungen 44 bzw. 46 bzw. 47 bzw. 48 mit der Druckseite eines nicht dargestellten Gebläses innerhalb eines geschlossenen Umluftsystems in Verbindung.
Der als luftdurchlässiges Förderband ausgebildete Saugstrangförderer 32 läuft in einem Tabakkanal 49, der von zwei Kanalwangen 51 seitlich begrenzt wird. Der Endabschnitt 52 der Führungsfläche 24 ist auf eine der Kanalwangen 51 ausgerichtet, so daß ein lückenloser glatter Übergang der Führungsfläche zum Tabakkanal 49 gewährleistet ist. Der Endabschnitt 52 der Führungsfläche 24 ist als um eine Schwenkachse 53 abschwenkbarer Leitkörper 54 ausgebildet, um eine bessere Zugänglichkeit der Vorrichtung bei Störungen zu gewährleisten.
Die durch den Kanal 11 zugeführten Tabakfasern 8 werden von dem Blasluftstrom aus der Düse 14 umgelenkt, wobei Rippen 9 abgeschieden werden. Durch Blasluftströme aus den Düsen 21 und 22 wird der umgelenkte Faserstrom unter Heranförderung der nicht abgelenkten leichten Tabakfasern 8 zu der Führungsfläche 24 gefördert, an der entlang er mit Unterstützung des Blasluftstromes aus der Düse 28 in den Tabakkanal 49 und zu dem Saugstrangförderer 32 gefördert wird. Infolge der durch den angesaugten Tabakstrang 34 und den Saugstrangförderer 32 in die Unterdruckkammer 33 strömenden Saugluft werden die Tabakfasern als Strang 34 an dem bewegten Saugstrangförderer 32 festgehalten und senkrecht zur Zeichenebene abgefördert. Anschließend wird der Tabakstrang in einer nicht dargestellten Strangeinheit der Zigarettenstrangmaschine in Zigarettenpapier eingeschlagen und letzteres in einem Randbereich verklebt. Von dem so gebildeten endlosen Zigarettenstrang werden dann fortlaufend Zigaretten abgeschnitten.The interior of the tubular body 37 and the vacuum chamber 33 of the suction line conveyor 32 are via air lines 42 and 43 with the suction side and the pressure chambers 13, 19, 23 and 29 via air lines 44 and 46 or 47 and 48 with the pressure side of a not shown Blower connected within a closed air recirculation system.
The suction line conveyor 32, which is designed as an air-permeable conveyor belt, runs in a tobacco channel 49 which is laterally delimited by two channel cheeks 51. The end section 52 of the guide surface 24 is aligned with one of the channel cheeks 51, so that a seamless, smooth transition of the guide surface to the tobacco channel 49 is ensured. The end section 52 of the guide surface 24 is designed as a guide body 54 which can be pivoted about a pivot axis 53 in order to ensure better accessibility of the device in the event of faults.
The tobacco fibers 8 fed through the channel 11 are deflected by the blown air stream out of the nozzle 14, ribs 9 being separated. Blown air flows from the nozzles 21 and 22 convey the deflected fiber flow, conveying the undeflected light tobacco fibers 8 to the guide surface 24, along which it is conveyed from the nozzle 28 into the tobacco channel 49 and to the suction line conveyor 32 with the aid of the blown air flow. As a result of the suction air flowing through the sucked-in tobacco rod 34 and the suction rod conveyor 32 into the vacuum chamber 33, the tobacco fibers are held as rod 34 on the moving suction rod conveyor 32 and conveyed away perpendicular to the plane of the drawing. The tobacco rod is then wrapped in cigarette paper in a rod unit (not shown) of the cigarette rod machine and the latter is glued in an edge area. Cigarettes are then continuously cut from the endless cigarette rod thus formed.

Claims (4)

Einrichtung zum Abführen überschüssiger Prozeßluft aus einer von konkaven Wandabschnitten begrenzten Kammer zum Erzeugen einer an der Kammerwand entlangebewegten Fließbettströmung eines Tabak/Luft-Gemisches zwecks Bildung eines zu einem Rauchartikelstrang konfektionierten Tabakstranges, gekennzeichnet durch eine im wesentlichen im Bereich des Kammerzentrums installierte stationäre Luftabsaugung (36).Device for discharging excess process air from a chamber delimited by concave wall sections for generating a fluidized bed flow of a tobacco / air mixture moving along the chamber wall in order to form a tobacco rod assembled into a rod of smoking articles, characterized by a stationary air suction (36) installed essentially in the region of the chamber center . Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Luftabsaugung (36) als Rohrkörper (37) ausgebildet ist, welcher einen unterseitigen bzw. dem Deckenwandabschnitt der Kammer (26) abgewandten Lufteinlaß (38) aufweist.Device according to claim 1, characterized in that the air suction (36) is designed as a tubular body (37) which has an air inlet (38) on the underside or facing away from the ceiling wall section of the chamber (26). Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Lufteinlaß (38) des Rohrkörpers (37) mit Sieböffnungen (39) ausgestattet ist.Device according to claim 2, characterized in that the air inlet (38) of the tubular body (37) is equipped with sieve openings (39). Einrichtung nach Anspruch 2 oder 2, dadurch gekennzeichnet, daß der Lufteinlaß (38) in eine sich zum Rohrzentrum hin verengende Schlitzdüse (41) übergeht.Device according to claim 2 or 2, characterized in that the air inlet (38) merges into a slot nozzle (41) narrowing towards the tube center.
EP96102782A 1995-03-08 1996-02-24 Device for the removal of the excess of air in a distributor of the tobacco industry Withdrawn EP0730832A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508139A DE19508139A1 (en) 1995-03-08 1995-03-08 Device for removing excess process air from a distributor of a tobacco processing machine
DE19508139 1995-03-08

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EP0730832A1 true EP0730832A1 (en) 1996-09-11

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EP96102782A Withdrawn EP0730832A1 (en) 1995-03-08 1996-02-24 Device for the removal of the excess of air in a distributor of the tobacco industry

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US (1) US5645086A (en)
EP (1) EP0730832A1 (en)
JP (1) JPH08256750A (en)
DE (1) DE19508139A1 (en)

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US5645086A (en) 1997-07-08
DE19508139A1 (en) 1996-09-12
JPH08256750A (en) 1996-10-08

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