EP1733634A1 - Tobacco cake subdividing apparatus for use in cut tobacco expanding system - Google Patents

Tobacco cake subdividing apparatus for use in cut tobacco expanding system Download PDF

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Publication number
EP1733634A1
EP1733634A1 EP05728476A EP05728476A EP1733634A1 EP 1733634 A1 EP1733634 A1 EP 1733634A1 EP 05728476 A EP05728476 A EP 05728476A EP 05728476 A EP05728476 A EP 05728476A EP 1733634 A1 EP1733634 A1 EP 1733634A1
Authority
EP
European Patent Office
Prior art keywords
rake
tobacco
rotary rakes
rotary
clumper
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Withdrawn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
EP05728476A
Other languages
German (de)
English (en)
French (fr)
Inventor
Akira c/o JAPAN TOBACCO INC. KANAZAWA
Nobuyasu c/o JAPAN TOBACCO INC. ENDO
Susumu c/o JAPAN TOBACCO INC. UCHIDA
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.)
Japan Tobacco Inc
Original Assignee
Japan Tobacco Inc
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 Japan Tobacco Inc filed Critical Japan Tobacco Inc
Publication of EP1733634A1 publication Critical patent/EP1733634A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00—Preparing tobacco in the factory
    • A24B3/06—Loosening tobacco leaves or cut tobacco

Definitions

  • This invention relates to a subdividing apparatus used in a cut tobacco expanding system to subdivide a tobacco cake which is a consolidated mass of cut tobacco impregnated with liquid carbon dioxide, into small pieces, before the impregnated cut tobacco is subjected to flash drying.
  • expanded cut tobacco As one of filling materials for a cigarette, expanded cut tobacco is used.
  • the expanded cut tobacco improves the filling efficiency of the fillers for cigarettes.
  • the expanded cut tobacco is made by an expanding system, and the expanding system includes an impregnation container. Cut tobacco is fed into the impregnation container, and impregnated with liquid carbon dioxide within the impregnation container. Then, the impregnated cut tobacco is taken out of the impregnation container and fed to a flash dryer. The flash dryer rapidly dries the impregnated cut tobacco, and by this drying, solid carbon dioxide contained in the impregnated cut tobacco is vaporized, so that carbon dioxide gas is emitted from the impregnated cut tobacco. The emission of the carbon dioxide gas increases the volume of the cut tobacco. Thus, the impregnated cut tobacco is expanded.
  • the impregnated cut tobacco When the impregnated cut tobacco is taken out of the impregnation container, the impregnated cut tobacco is mostly in the form of a large consolidated mass called a tobacco cake. Such tobacco cake cannot directly be subjected to drying by the flash dryer.
  • a breaking apparatus for breaking a tobacco cake is provided in the expanding system, and such breaking apparatus is disclosed in U.S. Patent No. 4,307,735 , for example.
  • the breaking apparatus of this U.S. Patent comprises a plurality of rotary shafts arranged parallel within a horizontal plane, and a large number of blades attached to the rotary shafts. A tobacco cake is fed from above the breaking apparatus toward the blades, and broken by rotation of the blades.
  • the breaking device of this U.S. Patent breaks the tobacco cake into fine pieces, so that the impregnated cut tobacco is badly smashed. Even if this impregnated cut tobacco broken into fine pieces is then subjected to drying and thereby made into expanded cut tobacco, the resultant expanded cut tobacco is small in particle size and therefore not suitable to be used as a cigarette filling material.
  • the rotary-rake-type subdividing apparatus can, however, not perfectly subdivide a tobacco cake into tobacco lumps equal to or smaller than a desired size, so that lots of masses larger in size than the tobacco lumps, namely large masses called tobacco loaves and medium masses called tobacco chunks are left. If the tobacco loaves and tobacco chunks are directly fed to the flash dryer, the impregnated cut tobacco in the form of the tobacco loaves and tobacco chunks cannot be uniformly dried, which leads to lowering of the quality of the resultant expanded cut tobacco.
  • the primary object of this invention is to provide a tobacco cake subdividing apparatus capable of subdividing a tobacco cake of impregnated cut tobacco obtained from an impregnation container in an expanding system, in a good manner, and reducing the breakage of the impregnated cut tobacco.
  • a tobacco cake subdividing apparatus comprises a primary de-clumper arranged to receive a tobacco cake from an impregnation container, subdivide the received tobacco cake into tobacco loaves and deliver the tobacco loaves; and a secondary de-clumper arranged to receive the tobacco loaves from the primary de-clumper and subdivide the received tobacco loaves, wherein the secondary de-clumper includes paired rotary rakes horizontally separated from each other, for subdividing the tobacco loaves into tobacco chunks and delivering the tobacco chunks downward, and a movable rake wall located below the paired rotary rakes, the movable rake wall being moved from one side where one of the rotary rakes is located to the other side where the other of the rotary rakes is located while the movable rake wall vertically overlaps the rotary rakes so that the movable rake wall cooperates with the rotary rakes to subdivide the tobacco chunks into
  • the tobacco cake is first roughly subdivided into tobacco loaves by the primary de-clumper, and then the resultant tobacco loaves are further subdivided by the secondary de-clumper in two stages.
  • the primary and secondary de-clumper subdivide the tobacco loaves into tobacco chunks by the paired rotary rakes, and then further subdivide the tobacco chunks into tobacco lumps by cooperation between the paired rotary rakes and the movable rake wall. Since the tobacco cake is subdivided into the tobacco lumps in a plurality of stages, the subdividing power required in each stage is small, so that the breakage of the impregnated cut tobacco is reduced to a great degree.
  • the secondary de-clumper further comprises a lap adjustment device for adjusting overlap between the rotary rakes and the movable rake wall.
  • the secondary de-clumper can further comprise a speed adjustment device for adjusting a rotational speed of the rotary rakes and a moving speed of the movable rake wall.
  • the lap adjustment device By adjusting the overlap, the lap adjustment device reduces the breakage of the impregnated cut tobacco and adjusts the size of the tobacco lumps obtained by subdividing the tobacco chunks.
  • the speed adjustment device reduces the breakage of the impregnated cut tobacco and adjusts the subdividing performance of the secondary de-clumper.
  • each of the rotary rakes can include a rotatable roller and a plurality of rake rows provided on the cylindrical surface of the roller.
  • the rake rows are disposed in a circumferential direction of the roller with spaces between, and each of the rake rows has a large number of rake pins arranged along the axial direction of the roller with spaces between.
  • the rake pins are at equal positions or in phase with respect to the axial direction of the roller, while the rake rows are at different rotational phase with respect to the circumferential direction of the roller.
  • the rake pins in at least one rake row cover the space between the rollers and prevent the tobacco loaves from just passing through between the rollers.
  • the movable rake wall is located below the paired rotary rakes and middle between the paired rotary rakes, and includes a rotary shaft extending parallel to the rotary rakes, and a large number of rake discs mounted on the rotary shaft.
  • the rake discs are disposed in the axial direction of the rotary shaft with spaces between, in the manner such that each rake disc is located between the rake pins of each rotary rake. In this case, the rake discs overlap the rake pins of the rotary rakes.
  • the movable rake wall is located below the paired rotary rakes, and includes a conveyer extending across the rotary rakes, and a plurality of rake rows provided on the conveyer.
  • the rake rows are disposed in a width direction of the conveyer, and each of the rake rows has a large number of rake pins disposed in the direction of traveling of the conveyer with spaces between.
  • each rake row passes between the rake pins of each rotary rake. In this case, the rake pins on the conveyer overlap the rake pins of the rotary rakes.
  • a tobacco expanding system in FIG. 1 includes an impregnation container 2.
  • the impregnation container 2 receives cut tobacco and impregnates the received cut tobacco with liquid carbon dioxide. Then, the impregnated cut tobacco is taken out of the impregnation container 2, passed through a subdividing apparatus 4, and then fed to a flash dryer.
  • the subdividing apparatus 4 includes a primary de-clumper 6, a storage container 8 and a secondary de-clumper 10. More specifically, as clear from FIG. 1, the primary de-clumper 6 includes a grid 12. The grid 12 extends horizontally and has a plurality of parallel bars 12a. Immediately above the grid 12, a plurality of rotary rakes 14 are disposed in the longitudinal direction of the grid 12 with specified spaces between. Each rotary rake 14 has a rotatable roller 14a and two rows of rake pins 14b projecting from the cylindrical surface of the roller 14a. The two rows of rake pins 14b are separated in a diametrical direction of the roller 14b, and the individual rake pins 14b have an end bent along the direction of rotation of the roller 14a.
  • the impregnated cut tobacco taken out of the impregnation container 2 in the form of a tobacco cake is fed to the primary de-clumper 6 from above the primary de-clumper 6.
  • the primary de-clumper 6 subdivides the tobacco cake into a large number of tobacco loaves by cooperation between the rotary rakes 14 and the grid 12, and feeds the resultant tobacco loaves to the storage container 8.
  • the size of the tobacco loaves is determined primarily by the pitch between the rake pins 14b and the distance between the parallel bars 12a of the grid 12.
  • the storage container 8 temporarily stores the tobacco loaves, and then the tobacco loaves are fed from the storage container 8 to the secondary de-clumper 10.
  • the primary de-clumper 6 causes some impregnated cut tobacco particles to separate from the tobacco cake and tobacco loaves. As a matter of course, those separated impregnated cut tobacco particles are also fed to the storage container 8 with the tobacco loaves.
  • the secondary de-clumper 10 has a housing 16.
  • the housing 16 has an open top and bottom, respectively.
  • a pair of rotary rakes 18 is disposed within the housing 16.
  • the rotary rakes 18 are horizontally separated from each other.
  • each rotary rake 18 includes a roller 20.
  • the roller 20 includes a roller shaft, and is rotatably fitted to the housing 16 at the opposite ends of the roller shaft.
  • the roller 20 has four rake rows 22 on the cylindrical surface thereof, and the rake rows are disposed in the circumferential direction of the roller 20 at regular intervals.
  • Each rake row 22 has a large number of rake pins 24 projecting from the cylindrical surface of the roller 20.
  • the rake pines 24 are disposed along the axial direction of the roller 20 with the same pitch P and in phase. That is, the rake pins 24 in the four rake rows are at equal positions in the axial direction of the roller 20.
  • the rake pins 24 of the paired rotary rakes 18 are in phase in the axial direction of the roller 20.
  • the paired rotary rakes 18 have four rake pins 24 each, in one vertical plane.
  • the paired rotary rakes 18 are rotated about their respective axes with a phase difference of 45°.
  • the rake rows 22 of one of the paired rotary rakes 18 and the rake rows 22 of the other pass through between the rollers 20 of the rotary rakes 18, alternately.
  • the space between the rollers 20, 20 is always covered with any of the rake rows 22 of the paired rotary rakes 18.
  • each rake pin 24 has a length somewhat shorter than half the distance between the rollers 20 and a diameter of about 9 mm.
  • the pitch P between the rake pins 24 is determined depending on the size of an inlet of the flash dryer, and desirably, smaller than the pitch between the above-mentioned rake pins 14b. In the present embodiment, the pitch P between the rake pins 24 is equal to or less than 100 mm.
  • the drum rake 26 includes a rotary shaft 28, and the rotary shaft 28 is located between the rollers 20.
  • the rotary shaft 28 extends parallel to the rollers 20 and is rotatably fitted to the housing 16 at the opposite ends thereof.
  • a large number of rake discs 30 are mounted on the rotary shaft 28 .
  • the rake discs 30 are disposed along the axial direction of the rotary shaft 28 at regular intervals, in the manner such that each rake disc 30 is located between the rake pines 24.
  • the pitch between the rake discs 30 is equal to the pitch P between the rake pins 24, and the distance between the rake disc 30 and the adjacent rake pin 24 in the axial direction of the rotary shaft 28 is P/2.
  • the rotary shaft 28 has a diameter almost equal to the diameter of the roller 20, and the rake disc has an outside diameter almost equal to the outside diameter of the rotary rake 18.
  • FIG 4 shows a power transmission path from the electric motor 32 to the rakes 18 and 26.
  • roller shaft of each roller 20 has an end projecting from the housing 16, and as shown in FIG. 4, sprockets 34, 36 are mounted on the respective projecting ends of the roller shafts. Also the rotary shaft 28 has an end projecting from the housing 16, and a sprocket 38 is mounted on this end.
  • the sprocket 36 arranged on the electric-motor 32 side in FIG. 4 has a double structure comprising two sprocket members 36a, 36b.
  • the sprocket member 36a and an output sprocket 40 of the electric motor 40 are connected by an endless drive chain 42.
  • a tension sprocket 44 is rotatably fitted to the housing 16.
  • the tension sprocket 44 is located on the electric-motor 32 side.
  • An endless linking chain 46 is arranged to pass around the tension sprocket 44, the sprocket member 36b, the sprocket 34 and the sprocket 38.
  • each rotary rake 18 is represented as the orbit described by the end of the rake pin 24 in rotation.
  • the electric motor 32 is electrically connected to an inverter-type speed adjustment device 48.
  • the speed adjustment device 48 can adjust the rotational speed of the electric motor 32, and therefore, the rotational speed of the paired rotary rakes 18 and the drum rake 26.
  • the drum rake 26 is fitted to the housing 16 using a level adjustment device.
  • the level adjustment device can adjust the level, or height of the drum rake 26 relative to the paired rotary rakes 18, or in other words, the vertical distance D between the drum rake 26 and the paired rotary rakes 18.
  • the level adjustment device 49 includes a pair of slots 50 formed in the housing 16.
  • the slots 50 extend vertically.
  • the rotary shaft 28 of the drum rake 26 has opposite ends extending through both slots 50, respectively.
  • Support plates 52 are fitted to the rotary shaft 28 at the opposite ends thereof, using a bearing.
  • Each support plate 52 is fixed to the housing 16 by four fitting bolts 54 and nuts (not shown) disposed at the four corners of the support plate.
  • the through-holes 56 are arranged vertically with specified spaces between, on both sides of the slot 50. Hence, the level, or height of the drum rake 26, namely the distance D can be adjusted by selecting the through-holes 56 into which the fitting bolts 54 should be inserted.
  • the overlap of the rake disc 30 relative to the rake pin 24 can be varied within the range of the length of the rake pin 24.
  • the distance D is adjusted within the range of 85 mm (corresponding to the maximum overlap) to 155 mm (corresponding to the minimum overlap).
  • the tension sprocket 44 is fitted to the housing 16 in a vertically movable manner, and that the level, or height of the tension sprocket 44 can be adjusted in a similar manner to the drum rake 26. Hence, even when the distance D is adjusted, the tension sprocket 44 can impart a desired tension to the linking chain 46.
  • the tobacco loaves When tobacco loaves are fed from the storage container 8 to the secondary de-clumper 10, the tobacco loaves are subdivided into tobacco chunks smaller in size than the tobacco loaves by rotation of the paired rotary rakes 18, or in other words, the rake pins 24 of the paired rotary rakes 18, and the resultant tobacco chunks are fed onto the drum rake 26.
  • the diameter of the rake pins 24 is about 9 mm, which is enough to withstand the load required for subdividing the tobacco loaves, but small. Hence, when the tobacco loaves are subdivided by the rake pins 24, the breakage of the impregnated cut tobacco is reduced.
  • the rake discs 30 cooperate with the rotary rakes 18 to subdivide the tobacco chunks that have passed through between the rotary rakes 18, further into tobacco lumps of a desired size smaller than the size of the tobacco chunks.
  • the tobacco lumps are delivered with some impregnated cut tobacco particles.
  • the impregnated cut tobacco particles include not only those separated when the tobacco cake was subdivided but also those separated when the tobacco loaves and tobacco chucks were subdivided.
  • the tobacco lumps and impregnated cut tobacco particles delivered from the secondary de-clumper 10 are then fed to the above-mentioned flash dryer, and rapidly dried and thereby expanded within the flash dryer.
  • FIG. 6 shows the result of experiment, where examples E1 to E4 of the secondary de-clumper 10, which were different in the distance P/2 between the rake pin 24 and the rake disc 30 and the distance D, were used changing the rotational speed of the rotary rakes 18 and the drum rake 26, and the proportion of the tobacco lumps remaining in the impregnated cut tobacco delivered from the secondary de-clumper 2 and the average particle size of the impregnated cut tobacco delivered from the secondary de-clumper 2 were measured.
  • the proportion of the remaining tobacco lumps is expressed as a percentage relative to the amount of the tobacco loaves fed from the primary de-clumper 6, which is considered as 100. As clear from FIG. 6, in examples E1 to E4, the proportion of the remaining tobacco lumps was reduced to about 40% or lower.
  • a broken line in FIG. 7 represents the average particle size (1.66 mm) of impregnated cut tobacco obtained by a comparative example of the secondary de-clumper.
  • the comparative example of the secondary de-clumper includes a rotor and a spiral row of rake pins provided on the cylindrical surface of the rotor.
  • the proportion of the remaining tobacco lumps was about 80% or higher, and the average particle size of the impregnated cut tobacco was reduced to about 70 % of the initial average particle size.
  • the tobacco cake is subdivided into small pieces in a good manner, which allows the impregnated cut tobacco to be thereafter dried uniformly. Further, since the breakage of the impregnated cut tobacco is reduced, high-quality expanded cut tobacco can be produced.
  • FIG. 8 shows that under a fixed rotational speed of the secondary de-clumper, as the distance D between the rotary rakes 18 and the drum rake 26 increases, the rate of reduction of the average particle size of the impregnated cut tobacco decreases.
  • the average particle size of the impregnated cut tobacco can be controlled to be within a desired range.
  • the breakage of the impregnated cut tobacco is thought to be reduced for the following reason: As the distance D increases, the overlap decreases, so that the proportion of the tobacco chunks passing through the drum rake 26 without being broken by the rotary rakes 18 and the drum rake 26 increases.
  • the degree to which the tobacco chunks are subdivided, or in other words, the average particle size of the impregnated cut tobacco can be easily maintained at a desired level, in a manner depending on the distance D, namely the distance between the rotary rakes 18 and the drum rake 26.
  • the rotary rakes 18 and the drum rake 26 of the secondary de-clumper 10 can be rotated by separate electric motors, independently.
  • the secondary de-clumper can use a conveyer-type movable rake wall in place of the drum rake 26.
  • the movable rake wall includes a conveyer 58 located below the paired rotary rakes 18, and a plurality of rake rows 60 provided on the conveyer 58.
  • the rake rows 60 are disposed in the width direction of the conveyer 58 with spaces between, and each rake row has a large number of rake pins 62 arranged in the direction of traveling of the conveyor 58 with spaces between.
  • each rake row 60 passes between the rake pins 24 of each rotary rake 18.
  • the level, or height and the traveling speed of the conveyer 58 can be adjusted.
  • each rake row 60 passes between the rake pins 24 of each rotary rake 18, where the rake rows 60 and the rake pin rows 22 cooperate to subdivide the tobacco chunks.

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  • Manufacture Of Tobacco Products (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP05728476A 2004-04-08 2005-04-06 Tobacco cake subdividing apparatus for use in cut tobacco expanding system Withdrawn EP1733634A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004114511 2004-04-08
PCT/JP2005/006779 WO2005096849A1 (ja) 2004-04-08 2005-04-06 刻みタバコの膨化処理システムのためのタバコケーキを細分する装置

Publications (1)

Publication Number Publication Date
EP1733634A1 true EP1733634A1 (en) 2006-12-20

Family

ID=35124758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05728476A Withdrawn EP1733634A1 (en) 2004-04-08 2005-04-06 Tobacco cake subdividing apparatus for use in cut tobacco expanding system

Country Status (7)

Country Link
US (1) US20070023057A1 (ja)
EP (1) EP1733634A1 (ja)
JP (1) JPWO2005096849A1 (ja)
CN (1) CN1960647A (ja)
CA (1) CA2560307A1 (ja)
RU (1) RU2328951C1 (ja)
WO (1) WO2005096849A1 (ja)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN109315821A (zh) * 2018-08-03 2019-02-12 秦皇岛烟草机械有限责任公司 一种新型烟丝松散弹丝辊装置

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Publication number Priority date Publication date Assignee Title
AT503521A1 (de) 2006-05-05 2007-11-15 Omnica Gmbh Verwendung eines extraktes von kiwi-frucht
RU2443257C1 (ru) * 2010-10-11 2012-02-27 Олег Иванович Квасенков Способ производства некурительного изделия из махорки
RU2443353C1 (ru) * 2010-10-20 2012-02-27 Олег Иванович Квасенков Способ выработки некурительного изделия из махорки
RU2443263C1 (ru) * 2010-10-20 2012-02-27 Олег Иванович Квасенков Способ производства некурительного изделия из махорки
RU2443274C1 (ru) * 2010-10-20 2012-02-27 Олег Иванович Квасенков Способ получения некурительного изделия из махорки
RU2443277C1 (ru) * 2010-10-20 2012-02-27 Олег Иванович Квасенков Способ получения некурительного изделия из махорки
RU2444227C1 (ru) * 2010-10-27 2012-03-10 Олег Иванович Квасенков Способ получения некурительного изделия из махорки
RU2444229C1 (ru) * 2010-11-11 2012-03-10 Олег Иванович Квасенков Способ производства некурительного изделия из махорки
CN106115298A (zh) * 2016-08-12 2016-11-16 安徽中烟再造烟叶科技有限责任公司 烟末原料喂料装置
CN106723260B (zh) * 2016-12-31 2017-12-22 山东中烟工业有限责任公司 一种烟块预松散处理装置及方法
CN109198707A (zh) * 2018-09-10 2019-01-15 丽水学院 一种蛋酥丝分散器

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JPH0385328U (ja) * 1989-12-18 1991-08-29
JPH04293476A (ja) * 1991-01-14 1992-10-19 Japan Tobacco Inc 未解除リーフ原料の解除機
JP2001095550A (ja) * 1999-07-27 2001-04-10 Japan Tobacco Inc たばこ原料塊の解除装置およびこれを備えたたばこ原料の供給システム

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109315821A (zh) * 2018-08-03 2019-02-12 秦皇岛烟草机械有限责任公司 一种新型烟丝松散弹丝辊装置
CN109315821B (zh) * 2018-08-03 2023-09-19 秦皇岛烟草机械有限责任公司 一种新型烟丝松散弹丝辊装置

Also Published As

Publication number Publication date
CA2560307A1 (en) 2005-10-20
US20070023057A1 (en) 2007-02-01
WO2005096849A1 (ja) 2005-10-20
CN1960647A (zh) 2007-05-09
RU2328951C1 (ru) 2008-07-20
JPWO2005096849A1 (ja) 2008-02-21

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