EP0041186A2 - Trommel zum Trennen von Schüttgut - Google Patents

Trommel zum Trennen von Schüttgut Download PDF

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Publication number
EP0041186A2
EP0041186A2 EP81103900A EP81103900A EP0041186A2 EP 0041186 A2 EP0041186 A2 EP 0041186A2 EP 81103900 A EP81103900 A EP 81103900A EP 81103900 A EP81103900 A EP 81103900A EP 0041186 A2 EP0041186 A2 EP 0041186A2
Authority
EP
European Patent Office
Prior art keywords
drum
goods
barrier
outlet
towards
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Withdrawn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
EP81103900A
Other languages
English (en)
French (fr)
Other versions
EP0041186A3 (de
Inventor
Odd W. Hielm
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.)
Kockums Construction AB
Original Assignee
Kockums Construction AB
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 Kockums Construction AB filed Critical Kockums Construction AB
Publication of EP0041186A2 publication Critical patent/EP0041186A2/de
Publication of EP0041186A3 publication Critical patent/EP0041186A3/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02B—PREPARING GRAIN FOR MILLING; REFINING GRANULAR FRUIT TO COMMERCIAL PRODUCTS BY WORKING THE SURFACE
    • B02B1/00—Preparing grain for milling or like processes
    • B02B1/02—Dry treatment
    • 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
    • B07B4/06—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall using revolving drums

Definitions

  • the invention relates to a drum for separating bulk goods. More specifically, the invention relates, in particular, to an equipment for treating chopped crops consisting of a mixture of grains and lighter components.
  • the drum comprises at least one discharge opening for heavier goods in the wall of the drum.in the separating section, a discharge opening for lighter goods in the far end of the separating portion, and preferably a drying section in front of the separating section.
  • Rotatable drying and separating drums of the kind indicated in the preamble are already generally known.
  • the drying section is delimited with respect to the separating section by a flange directed radially inwards, which constitutes a constriction of the passage through the drum.
  • a flange directed radially inwards, which constitutes a constriction of the passage through the drum.
  • a discharge opening in the wall of the drum Immediately behind the constricting flange, seen in the conveying direction of the goods, there is a discharge opening in the wall of the drum.
  • the lighter components of the bulk goods should be given such a great increase in speed in the region in front of the constriction that they are separated from the heavier fraction and are drawn out through a discharge opening in the end of the separating portion while the heavier fraction falls out through the outlet behind the constricting flange.
  • the object of the invention is to solve the above mentioned problems in a separating drum of the kind indicated in the preamble.
  • the object with a combined rotatable drying and separating drum, is to adapt the equipment to the requirements particularly when drying and separating chopped cereals.
  • Another object is to provide an equipment with great capacity, at the same time as a degree of separation of the heavier fraction which normally constitutes the more valuable fraction in the mixture, is very high.
  • the drum is provided with a barrier, for example a constricting flange of the above mentioned kind, known per se.
  • a barrier for example a constricting flange of the above mentioned kind, known per se.
  • means are provided to feed the mixed crops substantially along the wall of the drum towards said barrier, so that the goods, as a result of the feed substantially along the generated surface, can be forced to stop up and temporarily accumulate in front of the barrier, before they enter the separating portion to be separated into their fractions.
  • the barrier can be said to constitute a starting point for the separation which is adapted to be carried out in the separating portion with air as the main conveying means in the main conveying direction of the goods.
  • the prerequisite is obtained for a more effective separation with less admixture of goods flowing into the separating portion from other parts of the drying section of the drum or corresponding introductory parts.
  • the goods of the different fractions also have substantially the same starting speed as one another and consequently come to land inside the section of the separating portion which is clearly defined for the respective fraction.
  • the feed members in front of the barrier may, for example, consist of screwshaped conveyors at the inside of the drum in the drying section of the drum or the like.
  • one or more outlets are provided in the wall of the drum after said barrier at a distance from this which is selected so that it lies within the region within which the greater part of the heavier fraction, such as grains in a mixture of chopped crops, is intended to land after having passed said barrier.
  • Means for feeding the landed goods backwards towards said outlet then are provided behind said outlet in the wall of the drum.
  • one or more outlets further, or possibly as an alternative to the first mentioned outlet, are provided in the wall of the drum immediately behind said barrier, behind said outlet/s, feeding means being provided to feed the goods backwards towards the outlet/s.
  • feeding means being provided to feed the goods backwards towards the outlet/s.
  • the entire distance between the two preferably provided outlets or group of outlets is occupied by feeding means provided to feed goods backwards towards the outlet/s behind said barrier.
  • a barrier may also be disposed in the separation portion, in which case this other barrier, in a similar manner to the barrier which delimits the drying section or the like from the separation portion, is surrounded by members on the one hand to feed goods along the wall of the drum towards said other barrier and on the other hand to feed goods, which have passed the barrier, towards a further one or more discharge openings in the wall of the drum at the other side of'the barrier. Further barriers and discharge openings in the wall of the drum may, of course, be provided.
  • the numeral 1 designates a rotatable drum which constitutes an integrated primary drier, threshing mechanism and separating mechanism for chopped cereals.
  • a mixing chamber for drying air is designated by 4.
  • a feed pipe 5 is adapted to feed the chopped but otherwise untreated crops into a primary drier 6 which is connected to a separating section 7.
  • In the separating section 7 there is a first and a second outlet device 8A and 8B respectively for grains in the region in front of a first and a second annular outlet 12A and 12B respectively in the wall of the drum 1.
  • the outlet devices including the outlets are of the kind described in more detail in the U.K. Patent Application No. 81 00989 filed by the same applicant and entitled "Device for a rotatable drying and separating drum", which application is hereby incorporated in the present text.
  • the primary drier 6 and the separating section 7 together form the coherent, rotatable drum 1 which has a horizontal axis of rotation.
  • the drum 1 is adapted to be rotated by a drive motor 61 about the horizontal axis of rotation.
  • the drum 1 rests against a plurality of rollers 62 which are supported by a base 64 via bearing brackets 63.
  • the pipes for introducing drying air into a mixing chamber 4 are designated by 54 and 55, while a lock for crops is designated by 13.
  • Disposed in the discharge end of the drum 1 is an outlet box 14 for straw, chaff and other lighter components of the crops.
  • the outlet devices 8A and 8B for grains are connected, via locks 34A and 34B and pipes 9A and 9B, to a grain drier not shown.
  • Further disposed above the locks 34A and 34B are supply pipes 10A and 10B respectively for introducing air into the outlet devices 8A and 8B.
  • a damper in the supply pipe 10A and 10B respectively is designated 11A and 11
  • the primary drier 6 is provided, at the inside of the drum 1, with lifting laminations 65 in the form of straight pieces of sheet metal directed radially inwards.
  • the drum is instead internally clad with spiral threads 10A consisting of sheet-metal strips twisted into spiral shape and directed radially inwards and welded to the inside of the drum 1.
  • the drying portion 6 is terminated by a short section of conveyors 68A. These may consist of lifting laminations directed radially inwards of the same kind as the laminations 6 but with a shorter axial extent.
  • conveyors may be provided in the form of radially directed pins which, on rotation of the drum, can lift up straw components for preference and permit grains or other small particles to pass between the pins and on directly over the edge of the constricting flange into the separating portion.
  • the short section of conveyors 68A is disposed immediately in front of the first constricting flange 66A.
  • this illustrates diagrammatically that the homogeneously mixed bulk goods in the drying portion 6 in the region in front of the straight lifting laminations 65, tumble around in the drum 1 - section A in the diagram.
  • the distribution of goods in the axial direction is substantially uniform.
  • the goods are fed at high speed forwards towards the constricting flange 66A to accumulate in front of the constricting flange - section C - before they are lifted up by the conveyors 68A to enter the separating portion 7.
  • conveyors 68A comprise inwardly directed pins, these exert a greater lifting effect on the straw components in the goods than on other components so that the former have a higher starting height than the grains before they pass into the separating portion 7.
  • the conveyors 68A comprise inwardly directed pins, these exert a greater lifting effect on the straw components in the goods than on other components so that the former have a higher starting height than the grains before they pass into the separating portion 7.
  • Whatever kind of lifting conveyor 68A is used, however, the result is obtained that the heavier components of the accumulated goods C in front of the constricting flange 66A come to land near the constricting flange, at the back of this - amount D in the diagram - while straw and other lighter components land further away in the separating portion - amount E.
  • the first outlet 12A in the wall of the drum 1 is disposed at such a great distance behind the first constricting flange 66A that a considerable proportion and normally more than half of the heavier fraction - the grains C - come to land between the constricting flange 66A and the outlet 12A after having passed the constricting flange 66A. Nevertheless some lands further away.
  • the drum 1 In order to feed the grains D to. the outlet 12A, the drum 1 is provided at each side of the'outlet 12A with spiral-shaped members - screws - 18A and 19A adapted, on rotation of the drum 1, to feed preferably grains D forwards or backwards towards the outlet 12A.
  • a row of pins 20A and 21A is disposed in front of the screws - seen in the feed direction.
  • the pins may also be disposed in another manner, for example in straight rows between the adjacent screws 18A and 19A respectively. Alternatively, it is also conceivable to dispose the pins more or less at random.
  • the pins work so that they primarily lift up the straw components on rotation of the drum while the grains can substantially pass through. When the straw then falls down, it is caught by the stream of air and is driven forwards in the drum while the grains are exposed to a considerably lesser extent to the driving action of the air but instead are driven by the screws 18A and 19A from both directions towards the outlet where they are discharged. A final separation of chaff and other lighter particles also takes place in the opening 12A through an oppositely directed stream of air through the opening.
  • the feed direction .of the screws is indicated by filled-in arrows and the feed direction of the air in the various sections by non-filled-in arrows.
  • the formation of the screws 19A feeding backwards and the pins 21A cooperating therewith is shown in more detail in Fig. 2.
  • the screws 18A are similarly formed but threaded with the opposite hand.
  • Fig. 3 is only intended to illustrate the principles of the present inventive idea and that the diagram does not claim to show the actual conditions inside the drum true to scale or in an absolute manner.
  • the drum 70 shown in Fig. 4 constitutes an integrated primary drier, threshing mechanism and separating mechanism for chopped cereals.
  • the drum 70 thus has a horizontal axis of rotation and is provided to be rotated by a drive motor (not shown) about the horizontal axis of rotation.
  • a drive motor not shown
  • supporting rollers, bearing brackets or the base been shown in the figure.
  • Further two discharge devices 71A and 71B have been shown only schematically. All these details may be of the same kind as have been described with reference to the preceding embodiment.
  • an inlet opening.72 to an inlet portion with feed means .in the form of helical strips along the wall of the drum, provided to feed the goods towards a primary drier 75.
  • the separation section has been designated 76.
  • the primary drier 75 is provided, at the inside of the drum 70, with lifting laminations 77 in the form of bent pieces of sheet metal.
  • the drum is instead internally clad with spiral threads 78 consisting of sheet-metal strips twisted into spiral shape and directed radially inwards and welded to the inside of the drum 70.
  • the drying portion 75 is terminated by a short section of conveyors 79. These may consist of lifting laminations directed radially inwards of the same height as the spirals 78 and with a shorter axial extent than the laminations 77.
  • the short section of conveyors 79 is disposed immediately in front of a constriction flange 80. At a distance behind the constriction flange there is provided a central deflection device in the form of a circular sheet disc 82.
  • a first circumferential outlet 83A in the region of the discharge device 81A.
  • a second outlet 83B which is provided at a distance from the first discharge device 83A corresponding to the distance between the first discharge device 12A and the constriction 66A according to the preceding embodiment with reference taken to the distribution of the heavier fraction D according to Fig. 3.
  • a discharge opening 84 for the lighter fraction of the bulk goods.
  • the operation of the drum shown in Fig. 4 is the same as according to the preceding embodiment until the barrier for the bulk goods formed by the constriction flange 80.
  • the goods When the goods have passed through the central opening 81, they will, however, according to this second embodiment, meet the central disc 82 which deflects the goods outwards towards the periphery of the drum.
  • the bulk goods thus are caused to change their direction which brings about a separation effect. Further the bulk goods are caused to accelerate in the region between the disc 82 and the wall of the drum, that is in the region adjacent to the first outlet 83A, and in this acceleration the lighter parts of the bulk goods, such as straw and chaff, are more readily carried away by the air flow than the grains.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Feeding Of Articles To Conveyors (AREA)
EP81103900A 1980-05-29 1981-05-20 Trommel zum Trennen von Schüttgut Withdrawn EP0041186A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8003989 1980-05-29
SE8003989A SE421479B (sv) 1980-05-29 1980-05-29 Trumma for separering av massgods

Publications (2)

Publication Number Publication Date
EP0041186A2 true EP0041186A2 (de) 1981-12-09
EP0041186A3 EP0041186A3 (de) 1984-05-09

Family

ID=20341067

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81103900A Withdrawn EP0041186A3 (de) 1980-05-29 1981-05-20 Trommel zum Trennen von Schüttgut

Country Status (5)

Country Link
EP (1) EP0041186A3 (de)
AU (1) AU7096781A (de)
DK (1) DK232681A (de)
FI (1) FI811648L (de)
SE (1) SE421479B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471513A1 (de) * 1990-08-14 1992-02-19 Philip Morris Products Inc. Konditionierungszylinder für Tabak und andere Teilchenmaterialien
WO2000053385A1 (en) * 1999-03-09 2000-09-14 Svedala Industries, Inc. Pyrolysis process for reclaiming desirable materials from vehicle tires
US6851850B1 (en) 1998-11-11 2005-02-08 Microlife Intellectual Property Gmbh Electronic fever thermometer
CN102706105A (zh) * 2010-10-01 2012-10-03 欧绿保2能源有限公司 干燥家庭废弃物的方法以及实现所述干燥的干燥转筒
JP2014121701A (ja) * 2012-11-20 2014-07-03 Okura Kazuyasu 夾雑物分離装置
RU2810684C1 (ru) * 2023-07-13 2023-12-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Арктический государственный агротехнологический университет" Пневмосепаратор сыпучих материалов

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617529A (en) * 1946-03-05 1952-11-11 Wallace L Mcgehee Dehydrator
FR1230809A (fr) * 1959-07-11 1960-09-20 Cima Cie Internationale Des Ma Nettoyeur rotatif applicable notamment dans l'industrie agricole pour le nettoyage du grain par exemple
GB1257815A (de) * 1967-12-27 1971-12-22
EP0033009A1 (de) * 1980-01-29 1981-08-05 Kockums Construction Aktiebolag Verfahren und Vorrichtung zum Behandeln gehäckselten Erntegutes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617529A (en) * 1946-03-05 1952-11-11 Wallace L Mcgehee Dehydrator
FR1230809A (fr) * 1959-07-11 1960-09-20 Cima Cie Internationale Des Ma Nettoyeur rotatif applicable notamment dans l'industrie agricole pour le nettoyage du grain par exemple
GB1257815A (de) * 1967-12-27 1971-12-22
EP0033009A1 (de) * 1980-01-29 1981-08-05 Kockums Construction Aktiebolag Verfahren und Vorrichtung zum Behandeln gehäckselten Erntegutes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0471513A1 (de) * 1990-08-14 1992-02-19 Philip Morris Products Inc. Konditionierungszylinder für Tabak und andere Teilchenmaterialien
US6851850B1 (en) 1998-11-11 2005-02-08 Microlife Intellectual Property Gmbh Electronic fever thermometer
WO2000053385A1 (en) * 1999-03-09 2000-09-14 Svedala Industries, Inc. Pyrolysis process for reclaiming desirable materials from vehicle tires
US6221329B1 (en) 1999-03-09 2001-04-24 Svedala Industries, Inc. Pyrolysis process for reclaiming desirable materials from vehicle tires
CN102706105A (zh) * 2010-10-01 2012-10-03 欧绿保2能源有限公司 干燥家庭废弃物的方法以及实现所述干燥的干燥转筒
CN102706105B (zh) * 2010-10-01 2016-04-06 欧绿保2能源有限公司 干燥家庭废弃物的方法以及实现所述干燥的干燥转筒
JP2014121701A (ja) * 2012-11-20 2014-07-03 Okura Kazuyasu 夾雑物分離装置
RU2810684C1 (ru) * 2023-07-13 2023-12-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Арктический государственный агротехнологический университет" Пневмосепаратор сыпучих материалов

Also Published As

Publication number Publication date
AU7096781A (en) 1981-12-03
DK232681A (da) 1981-11-30
SE421479B (sv) 1982-01-04
FI811648L (fi) 1981-11-30
EP0041186A3 (de) 1984-05-09
SE8003989L (de) 1981-11-30

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Effective date: 19831201

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Inventor name: HIELM, ODD W.