DE1232859B - Machine for threshing or stripping tobacco and for separating the threshed or stripped tobacco - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

A24b

German class: 79 a - 3/40

Number: 1 232 859

File number: A 46025 HI / 79 a

Filing date: May 12, 1964

Opened on: January 19, 1967

The invention relates to a machine for threshing or stripping of tobacco leaves and for separating the threshed or stripped tobacco, consisting essentially of a threshing chamber with an opening for feeding in tobacco leaves, with a circumferential opening in the chamber Threshing drum is arranged on a vertically mounted drive shaft and the chamber has a an outlet opening provided with a grille communicates with a separation chamber, in the air after flows above, which carries the lighter tobacco leaf parts.

Machines for threshing or stripping tobacco are in themselves in different designs known. A known machine has a threshing drum which is mounted on a horizontally mounted shaft running around. The threshing drum has a relatively small diameter and a large axial one Length, and the tobacco leaves are od between knives, cams attached to the threshing drum. and the grate of the threshing chamber is threshed or stripped. With these machines there is a risk of that the threshed or stripped tobacco is often thrown in lumps into the separation chamber, whereby a complete separation would be prevented. This is partly a consequence of the small extent the outlet opening in the circumferential direction of the drum.

There is also a machine with a vertically mounted threshing drum is known in which the stripping by cooperation between the drum and the housing surrounding the drum different sized sieve openings is achieved, while separating in a subsequent Step is carried out. The threshed tobacco is discharged through under the drum provided discharge belts.

It has also proven necessary to thresh or de-rib in two or more stages with differently sized threshing drums, e.g. B. a coarse thresher and a fine thresher to perform. In known machines, belt conveyors or other conveying means are provided for this purpose, which transport the threshed tobacco between the threshing drums, which are arranged one after the other or next to one another and optionally attached to one and the same shaft. The known machines are then in particular expansive and bulky and have a complicated structure, while the risk of tobacco being thrown out frequently in lumps into the separating chamber in the various threshing drums remains. To avoid these difficulties is the object of the invention, and this is done by the fact that the separating chamber is a machine for threshing or stripping
Tobacco and to separate the threshed
or stripped tobacco

Applicant:

Arenco Aktiebolag, Vällingby (Sweden)

Representative:

Dipl.-Ing. Dr. jur. V. Busse, patent attorney,

Osnabrück, Möserstr. 20-24

Named as inventor:

Arne Johansson, Vällingby;

Olof Karlsson, Stockholm (Sweden)

Claimed priority:

Sweden May 16, 1963 (5419)

annular gap between the outlet grille opening and an outer, substantially tubular, the threshing chamber surrounding the housing, which is completely or almost completely over the Extends the scope of the threshing chamber. As a result, the threshed or stripped tobacco is removed from the Threshing chamber through which extends completely or almost completely over the circumference of the threshing chamber Ejected outlet port and enters the separation chamber in one to the direction of in the Separation chamber upwardly flowing air vertical movement direction in this one. It has proved that as a result of these circumstances a considerably more even distribution of the threshed Tobacco is achieved in the separation chamber and that accordingly an improved separation and a increased capacity is achieved, even if only a single threshing or stripping and separating stage is used. The machine according to the invention also enables several to be arranged Separation and threshing stages without the use of special conveyors between the various Stages.

An embodiment of the subject matter of the invention is shown in the drawing. It shows

F i g. 1 is a side view of the machine according to the invention, partly in section,

F i g. 2 a horizontal section along the line H-II in F ig. 1, in reduction.

The machine shown in the drawing has two threshing or stripping drums 2, 3, which on

609 758/104

Claims (1)

3 4 a common vertical shaft 1 are attached, upward airflow all lighter the lower drum 2 as a coarse threshing drum takes sheet parts with it, while heavier sheet and the upper drum as a fine threshing drum, essentially pure stalks and ribs, is true. The threshing drums are in a threshing downward fall and out against the air currents chamber with a solid, tubular housing 5 5 the openings 19 from the separation chamber through a arranged with a bottom 4, which is coaxial with the annular opening 31 between the housing 20 Wave 1 located and emerge in an underlying coarse and the bottom cover 16. The deduction threshing chamber 6 and an overhead fine threshing of air through the outlet opening 22 by means of a chamber 7 through a fixed partition 8, not shown suction fan is set so that is divided. An upwardly tapering io through the opening 31 air with such a hood 9 extends into the open upper end of the speed that only stalks are sucked in Chamber 7, this hood being dimensioned and rib parts with a certain specific is that they drop down an arcuate gap between themselves and weight against the airflow and the housing 5 of the chamber 7 forms. Which can emerge from the separation chamber, wherein the Shaft 1, on which the threshing drums 2 and 3 load 15 air flows from the openings 19 contribute to the are fixed is in an upper bearing 10 on the tobacco in the chamber above the opening 31 Partition wall 8 and in one at the bottom of the machine to distribute evenly. frame attached bearing 11 stored, on which a lighter leaf parts, such as completely stripped leaf parts driven by a motor, not shown, and blade parts with remaining rib areas, Pulley 12 with a belt 13 on the 20 are driven by the air flow in the separation chamber 23 Shaft is attached. Carried between the threshing drum 2 in the upper chimney area, where they are from and the pulley 12 is a fan blade 14, the tapered part 21 against the hood 9 mounted on the shaft 1 in a fan chamber that conducts. A further separation of the from the bottom 4, a substantially arcuate tobacco achieved in that leaf parts with remaining shaped wall part 15, the rib areas in the separation chamber 25 against the hood 9 and in the gap slopes obliquely outwards, and a bottom cover between the hood and the housing 5 fall, the 16, which is provided with a suction line 17, is denoted by 32. The lighter, stripped leaf which is in connection with a suction port 18. parts follow the air flow through opening 22 The wall part IS is provided with openings 19 through to the outside. To achieve this effect through the air in a vertical separation chamber 23 30 is the speed of the air in this part of the is blown in, which is adjustable from the gap between the separating chamber through the hood 9, which in Floor cover 16, the wall part 15, the Ge arranged movably in the vertical direction and in housing 5, the hood 9 and all of these parts around a desired position can be determined. closing housing is formed, which consists of a fall in the blade parts with remaining rib areas essentially tubular housing 20, which shafts through the opening 32 into the fine threshing or ches from the bottom cover 16 to the top of the stripping chamber 7, where a further threshing or the fine threshing chamber 7 extends and in a Entrippungsvorgang between the rods 29 and the substantially tapering part 21 passes over, the fine threshing drum 3 is carried out specifically extends above the top side of the hood 9 for fine threshing or stripping is dimensioned and four and an outlet 40 four-bladed knife 33 arranged in this area. At this stage will Has opening 22 for air and separated tobacco. threshed or stripped tobacco back into the In the case where only one threshing drum is ejected Chamber 23, with pure rib parts is turned, the chamber 23 can fall down around the opening 31, while the entire circumference of the entire threshing chamber is continuously stripped blade parts to the air flow in the stretch. If, as in the illustrated embodiment 45 chamber through the opening 22 according to draurungsbeispiel, two threshing drums 2, 3 are used, and leaf parts with remaining ribs are used, the tobacco is returned to the fine threshing chamber 7 through an opening 24 in the area Housing 5 of the coarse threshing chamber can be guided slightly above until the ribs are completely removed the coarse threshing drum 2 supplied. To which is the aim. Separation chamber with a constant cross-section 5 °. Tests carried out have shown that good area over the entire height of the housing 5 to results by threshing or stripping and sawing, are two radially directed, vertical walls parry each achieved in a single step 25 provided, which the separation chamber on each, d. H. by using a single Limit the side of the opening. The threshing drum 2 outlet openings without return of stripped 26, 27 of the coarse or fine threshing chamber, which can with 55 tobacco through the opening 32. In this case Grids in the form of vertical bars 28 and 29, the tobacco leaves on the top of the threshing chamber are provided, consequently extend around a fed, so that consequently the Se angles of 270 ° of the total circumference of the threshing paring chamber and the outlet opening above the chambers. the entire circumference of the threshing chamber NEN when feeding tobacco leaves through the opening 60. Such a supply of tobacco leaves 24 by means of a conveyor (not shown) can of course also be used for separating the leaves in the coarse threshing chamber 6, where they are between two stages, d. i.e., a tracing back of incomplete see the rods 28 and the rotating threshing-stripped tobacco to the threshing chamber is possible, drum 2, which in the illustrated embodiment. example provided with four four-bladed knives 30 6 ₅ claims: is to be threshed or stripped. The threshed 1st machine for threshing or stripping or stripped tobacco is tobacco through the outlet opening and for separating the threshed or stripped tobacco. 26 ejected into the separation chamber 23, in which a stripped tobacco, consisting essentially of a threshing chamber with an opening for the supply of tobacco leaves, in the chamber a rotating threshing drum is attached to a vertically mounted drive shaft and the chamber communicates with a separating chamber via an outlet opening provided with a grille stands, in which air flows upwards, which carries the lighter tobacco leaf parts, through it characterized in that the separation chamber (23) has an annular gap between the outlet grille opening (26, 27) and an outer, substantially tubular housing (20) surrounding the threshing chamber (6, 7), which extends completely or almost completely over the circumference of the threshing chamber. 2. Machine according to claim 1, characterized in that the inner wall of the separating chamber (23) below the threshing chamber a protruding diagonally downward into the separating chamber and the wall area (15) reducing the cross section of the separating chamber (23) and that this wall area is provided with openings (19) through which air enters the chamber the outside of the outlet grille opening. 3. Machine according to claim 2, characterized in that a fan blade (14) on the shaft (1) the threshing drum below the threshing chamber for blowing an evenly distributed Air flow is attached to the openings (19) of the sloping wall part. 4. Machine according to one of claims 1 to 3, characterized in that the outer, im essentially tubular housing (20, 21) of the separating chamber is located above the threshing chamber narrowed and that an upwardly tapering hood (9) with a diameter compared to the threshing chamber has a smaller maximum diameter in the narrowing part of the separating chamber is provided coaxially to the threshing chamber, with the additional distance between the outer housing (21) and the hood (9) is designed such that tobacco stalks with leaf parts attached to them down through the annular gap (32) between the wall of the threshing chamber and the hood falling. 5. Machine according to claim 4, characterized in that the hood (9) in the vertical direction is slidably guided. 6. Machine according to one of claims 1 to 5, characterized in that a radially directed Tobacco supply line opens into the threshing chamber. 7. Machine according to one of claims 1 to 5, characterized in that the threshing chamber with an underlying coarse threshing chamber (6) and with an overlying one that is separate from this Fine threshing chamber (7) is provided, one on the same shaft (1) as the threshing drum (2) the coarse threshing chamber attached threshing drum (3). 8. Machine according to one of claims 1 to 5, characterized in that an axially directed Tobacco supply line opens into the threshing chamber. 9. Machine according to claim 8, characterized in that the separating chamber (23) and the Outlet grille opening (26, 27) extend completely over the circumference of the threshing chamber. Considered publications:
German patent specification No. 1107 574. 1 sheet of drawings 609 758/104 1. 67 © Bundesdruckerei Berlin