DE1241321B - Tobacco spinner distributors - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

A24c

German KL: 79 b - 12/10

Number: 1 241 321

File number: H 50523 III / 79 b

Filing date: October 11, 1963

Opened on: May 24, 1967

The invention relates to a tobacco centrifugal distributor with a radial component to one Axis of rotation directed distribution chamber, the outlet opening of which is concentric to the axis of rotation lying, circular slot, which is covered by a sieve, and with a lock opening on the perimeter of the distribution room.

With tobacco centrifugal distributors of this type, the tobacco flows axially into the distribution space and is there with it radial component is thrown outwards onto the screen in a fan shape and lays itself there in shape a tobacco stream that is equalized compared to the tobacco supply.

In a known distributor of the type mentioned at the outset, the distributor space is all over The circumference is open in the radial direction and there up to the lock opening by an endless sieve belt covered, which is guided outside of the distributor via pulleys. In the area of the lock opening is the sieve belt for diverting the tobacco stream from the distributor a piece in a tangential extension guided the circular path of the tobacco stream formed on the sieve belt (USA.-Patent 3 096770).

The object of the invention is to design a distributor of the type mentioned so that a such a sieve belt, which is guided over rollers and deflected several times, is avoided.

The invention is characterized in that the sieve has the shape of a flat circular ring and that the lock opening is arranged outside the plane of this circular ring.

Because the tobacco stream generated in the manifold is held on the sieve by the sieve penetrating air it is advisable to cover the sieve with a fixed cover on the back in the area of the sluice to cover so that the tobacco is no longer held there on the sieve and easily removed from it Sieve can be pushed off.

In many cases, a high rotational speed is desirable for the distributor, which experience has shown has a beneficial effect on the evenness of the tobacco flow generated. For the sieve it is against so that no congestion or expansion of the tobacco flow occurs at the lock, the circulation speed expediently as great as the current speed, d. H. the speed with which the tobacco stream is taken from the distributor and further conveyed. For this purpose is the sieve expediently on one independent of the distributor, preferably at the speed of flow around the axis of rotation the distributor arranged circumferentially drivable carrier.

Tobacco spinner

Applicant:

Hauni-Werke Körber & Co. K. G.,

Hamburg-Bergedorf, Kampchaussee 14-18

Named as inventor:

Willy Rudszinat, Dassendorf near Hamburg;

Günter Select, Hamburg-Bramfeld

In many cases, the tobacco-air dispersion is fed to the distributor via long pipelines. A large air flow rate is required for this. It has been shown that with the distributor The intended effect is better achieved in many cases when the flow through the distributor The proportion of tobacco-air dispersion is low. the end

25 ^ for this reason, preferably one connected on the inlet side Shunt provided for the main part of the air promoting the tobacco-air dispersion, which opens into the sieve. The proportion of air flowing through the shunt permeates due to the arrangement the mouth of the shunt the tobacco deposited on the sieve and carries there to the holder of the tobacco on the sieve.

So that no tobacco can get into the shunt, it is expediently through a on the inlet side Sieve covered by the flow space of the distributor.

A preferred embodiment of the invention is characterized in that the distributor in his to the extreme area is designed as an annular flow space, the one in radial Direction has elongated, rectangular cross-section and that on the opposite to the axial entry direction directed side is limited by the screen and closed to the outside in the radial direction. In these annular flow space can then intervene the means of the lock, which is used to pull off the Serve tobacco stream from the sieve.

In this preferred embodiment, the outer wall of the termination is expedient interrupted for the lock so that the tobacco stream can exit there. To accommodate the exiting Tobacco flow can then be tangential to

709 587/158

this wall arranged, continuously drivable in the direction of the circulating movement of the screen external conveyor may be provided. This conveyor does not need to be in said annular flow space protrude into it. If in the area of the lock z. B. by the mentioned cover on If no suction occurs in the sieve, the tobacco is removed from the sieve by centrifugal force in this area thrown outward onto the outer conveyor. In this case, the lock consists only of the outer one Conveyor, the cover and the interruption in the outer wall of the termination.

It has often proven to be advantageous to add a second one for the lock, at a distance from the outer one Conveyor arranged, circumferentially drivable inner conveyor to be provided, which extends over the sieve protrudes into the annular flow space. With this conveyor the stream of tobacco can then at the Place of the sluice can be stripped from the sieve. On the mentioned cover of the sieve you will It is advisable not to do without it because this promotes the removal of the tobacco.

To the outgoing tobacco stream, which in such a case between the two conveyors, the inner and outer conveyors, which are bordered, can have one or two more continuously Drivable conveyor may be provided that the space between the outer and the inner conveyors are arranged on one or both sides covering so that all conveyors include a channel substantially defining the outer portion of the annular flow space continues tangentially. In this channel the tobacco flow out of the distributor is then of three or four pages included.

The conveyors are expediently designed as endlessly revolving belts. But it can also different types of conveyor, e.g. B. designed as circular disks, be provided, the circumferential surface as Conveying surface acts.

The invention will now be based on the drawings, in which some exemplary embodiments are shown, explained in more detail. In the drawings shows

F i g. 1 shows a distributor according to the invention in section along the axis of rotation,

F i g. 2 shows a partial section from FIG. 1 along the line AA,

F i g. 3 shows the distributor from FIG. 3 on a somewhat smaller scale. 1 seen in the direction of the inflow, the parts on the side of the flow space facing the observer are removed,

F i g. 4 shows the distributor from FIG. 4 on a reduced scale. 1 to 3 with some cooperating with the distributor Devices of the cigarette machine, namely in the view as in FIG. 3,

. F i g. Fig. 5 shows an arrangement of a distributor with a horizontal axis of rotation and one arranged at the top Sluice in sketchy representation and

F i g. 6 shows a further embodiment of a distributor in section along the axis of rotation.

In the case of the FIG. The embodiment shown in FIGS. 1 to 4 is denoted by 1 around the axis of rotation 2 rotationally symmetrically designed funnel referred to, into which a cone 3 protrudes, which also is designed and arranged rotationally symmetrical to the axis of rotation. These two parts 1 and 3 limit a flow space 4 which runs axially on the inlet side and at an angle of approximately on the outlet side 45 ° to the axial direction and form the distributor.

The funnel 1 is rotatably supported at 5 and 6 in ball bearings in a fixed housing 7 and indicates at his in F i g. 1 at the top end of a drive pulley 20, over which it is not of a shown drive device around the axis of rotation 2 can be driven circumferentially.

The housing 7 forms a stationary one at 8

ίο outer closure for the flow space 4, the apart from a lock area, which is described below, over the entire circumference of the flow space 4 extends. This closure adjoins the outer edge of the funnel 1

»5 and runs from there along the wall 9 in radial direction outwards and then along the wall 10 in the axial direction. Between the wall 10 and the outer edge of the cone 3 has a slot-shaped outlet opening 11 recessed, which, apart from the area of the lock, which will be described in more detail below, over the entire circumference of the distributor 1, 3 extends. This outlet opening 11 opens into an annular one Channel 12, which is connected to a suction fan 14 via the suction nozzle 13 (see also FIGS. 3 and 4) is.

The outlet opening 11 is completely covered by a flat annular screen 15, which is attached to the Periphery of a carrier 16 is attached, which in turn is rotatable about the axis of rotation 2 in the ball bearings 17 and 18 is mounted on a stationary housing part 19 fastened to the housing 7.

On the free, in F i g. 1 lower end of the beam a drive pulley 21 is arranged over which the carrier can be driven circumferentially about the axis of rotation 2 by a drive device (not shown) is, regardless of the funnel 1. In the carrier 16 is in ball bearings 22, 23 a Shaft 24 rotatably mounted about axis of rotation 2.

To drive the shaft 24 is on in F i g. 1 free end of this shaft located below is a drive pulley 25 attached, which can be driven via a drive device, not shown. At the other The cone 3 is attached to the free end of the shaft 24.

The funnel 1, the cone 3 and the carrier 16 with the sieve 15 can rotate at different speeds may also be driven in opposite directions to one another. These parts are so intertwined and in that Housing 7 adapted so that there is only a small amount of play at the transition points from one part to the other, so that the flow space 4, apart from the inlet opening 26 and the outlet opening 11, is essentially closed. The housing 7, which surrounds the distributor, is perforated at 87 and 88.

In the flow space 4 on the inner walls of the funnel 1 and 3 of the cone protrude Ribs 27, 28, which, as particularly shown in FIG. 2 can be seen, only protrude so far into the space 4, that between the envelopes 90, 91 of the free edges of the ribs one extends in the direction of flow Interspace 89, which extends over the entire flow space 4 and is rotationally symmetrical, remains to the axis of rotation 2 is. The ribs 27, 28 can therefore not be with the respective touch opposite ribs when parts 1 and 3 rotate at different speeds. The ribs each run in a plane located in the axis of rotation 2. But you can

In a modification of the illustrated embodiment, it can also be twisted in the manner of Ventilatprflügeln.

The termination 8 has at 29 and 30, as shown particularly in FIG. 3 can be seen, one interruption each on the serves to a lock for dividing the tobacco stream. Extends along the interruption 29 a revolvingly driven endless conveyor belt 31 which, based on the direction indicated by the arrow 32 from FIG. 3 specified Direction of rotation of the screen 15 upstream end of the interruption 29 is in extends substantially in the tangential direction to the wall 10. The conveyor belt 31 runs in the direction of the arrow 33 from FIG. 3 µm at the same speed as sieve 15.

In the area of the interruption 29, a cover 34 is provided below the screen 15, which the The outlet opening 11 closes off against the channel 12 in this area. The conveyor belt 31 is as out F i g. 1 can be seen, wider than the ring-shaped enclosed by the walls 9 and 10 and the sieve Flow space 35 and protrudes about the same on both sides.

In the flow space 35, a deflection roller 36 is arranged within the screen 15, which in a stationary needle bearing 37 arranged on the housing 7 about an axis parallel to the axis of rotation 2 is rotatably mounted. A second inner conveyor belt 38 is placed around this deflection roller, which, as from F i g. 3 can be seen through the interruption 29 and the interruption 30 from the interior of the distributor is led out and placed around two further pulleys 39, 40. The conveyor belt 38 is endless and runs according to the arrow 41 from FIG. 3 µm, essentially at the same speed as the conveyor belt 33. The conveyor belt 38 is approximately as wide as the flow space 35.

Upstream of the conveyor belt 31 is a device indicated by the paper roller 42 a strip of cigarette paper 43 is continuously placed on the conveyor belt 31, so that the Interruption 29 tobacco rod 44 emerging from the distributor on the cigarette paper strip 43 lies.

Above the conveyor belt 31 a device 45 is arranged, which the tobacco stream 44 in the Strips cigarette paper 43 and glues it so that a cigarette rod 46 is formed.

The conveyor belt 31 is, as shown in FIG. 4, a cutting device 47 through which the cigarette rod 46 is cut into cigarette lengths and a magazine 48 for receiving the cigarettes is connected downstream. As can be seen from FIG. 4, the distributor has a horizontal axis of rotation in FIG Arranged cigarette machine.

As also from FIG. 4, a line 49 is connected to the distributor on the inlet side, which is connected to the blower 14 on the pressure side via line 50. On line 49 is also a tobacco feeder 51 is connected through the tobacco fiber 52 into the line 49 flowing air stream is given.

The mode of operation of the arrangement is as follows: During operation, the funnel 1, the cone 3 and rotate the carrier 16 with the sieve 15, namely the funnel 1 fastest, the cone 3 somewhat slower and the carrier 16 with current speed in the same direction of rotation as indicated by the arrow 32 from FIG. 3 indicated, the conveyor belts 31 and 38 run in the direction of the arrows. 33 and 41 with stream speed around, and the fan 14 generates a in the lines 49, 50 and the flow space 4 of the distributor Air flow according to arrows 53 and 54 from FIG. 4th

The tobacco feed device 51 is switched on and scatters as evenly as possible Flow of tobacco fiber 52 into conduit 54, which is entrained by the air flow, so that a tobacco fiber-air dispersion into the inlet opening 26 of the manifold entry. The tobacco fibers are moved into the flow space 4 by the action of the ribs 27 and 28 swirl and thereby distribute themselves evenly in the dispersion. Lumps of fiber and contiguous Fibers that get into the inlet opening 26 are loosened up in the process. These Dispersion flows along the cone 3 over the entire circumference of the distributor to the outlet opening 11. The air portion of the dispersion flows through the sieve 15 and passes through the channel 12 and the suction nozzle 13 again in the fan 14 and again in the circuit. The tobacco fiber, on the other hand, is made of the sieve 15 is retained and lies in the annular flow space 35, as shown in FIG. 3 can be seen, to a stream that becomes stronger and stronger downstream. This stream is made up of many small ones Formed tobacco streams which are formed by the ribs 27 and 28 in the area of the cone 3. To this Way it is ensured that when in a flow area, for. B. in the area of some neighboring, a particularly large amount of tobacco is contained between the ribs 27 and 28 of the flowing streams, this does not affect it a point of the tobacco stream 44 can reach, but distributed over a large piece of the tobacco stream 44 will. The size of this piece corresponds to the higher speed with which the funnel 1 and the cone 3 rotate opposite the sieve 15. Correspondingly, there are also flow areas that are less tobacco contained, not effective at one point of the tobacco stream 44, but it is balanced with flow areas, which contain more tobacco instead.

The tobacco stream 44 built up in this way during one revolution of the screen 15 arrives in the area of Lock, which consists of parts 29, 30, 31, 34 and 38, over the cover 34, in which the induced draft of the fan 14 is no longer effective, and is due to centrifugal force from the sieve 15 to the outside pushed onto the conveyor belt 31 and leaves the conveyor through the interruption 29. On the conveyor belt 31, the flow is held by the conveyor belt 38, through which also about the sieve 15 adhered tobacco fiber is stripped off. The tobacco stream 44 then passes into the device 45, is processed there to the cigarette rod 46 and then cut into cigarettes, which in the Magazine 48 can be stored.

In a modification of the illustrated embodiment, one or two further conveyor belts can be used be provided that the tobacco stream 44 on the in F i g. 3 facing and / or turned away from the viewer Cover the side so that the tobacco stream 44, after it has left the manifold, is distributed over three or three sides. four sides is covered by a conveyor belt. These conveyor belts are preferably also endlessly revolving Conveyor belts running at current speed, i.e. the same speed as that Revolve conveyor belt 31 in the direction of arrow 33.

In the embodiment shown in Fig. 1 to 4, the axis of rotation 2 is horizontal, and the The sluice is attached at the bottom of the distributor.

In a modification of this exemplary embodiment, with a horizontal axis of rotation 2, the lock, such as in Fig. 5 indicated, also be attached above. The tobacco stream 55 then lies on the conveyor belt 56, which, like the conveyor belt 38 of the first exemplary embodiment, protrudes into the distributor 57 and the tobacco stream 55 behind. The outer conveyor belt 58, which is arranged in substantially the same way is like the conveyor belt 31 of the first embodiment, then presses on from above The tobacco stream 55 lying on the conveyor belt 56. The conveyor belt 56 is the one shown in FIG Embodiment another conveyor belt 59 is connected downstream. In the space 60 between a cigarette paper strip 62 is fed to the two conveyor belts 56 and 59 via the roll 61, which lies on the conveyor belt 59 under the tobacco stream 55. The remaining parts of this embodiment are designed in the same way as in the first exemplary embodiment and also have the same effect.

In Fig. 6 shows a differently designed distributor, in which essentially the flow space 63 is designed differently than in the case of the distributor from the first exemplary embodiment. The remaining parts of the illustrated distributors are corresponding to the different configuration of the flow space 63 to Part formed differently than in the embodiment shown in Fig. 1, but have in essentially the same function.

The flow space 63 is delimited by a plate 64 and a plate 65. The plate 64 opens the inlet connection 66, which corresponds to one of the line 49 of the first embodiment Line 67 is connected. The plate 64 is rotatable about the axis of rotation 69 in the ball bearings 68 fixed housing 70 supported. The drive disk attached to the plate 64 is used to drive the plate 64 71, which corresponds to the drive pulley 20 of the first embodiment. In the lower part of the housing 70 is a carrier 73 rotatably mounted about the axis of rotation 69 in ball bearings 72, the Support 16 corresponds to the first embodiment and an annular screen 74 is attached to its circumference is. To drive the carrier 73, the drive pulley 75, which is the drive pulley 21 of the corresponds to the first embodiment. In the carrier 73, a shaft 76 is rotatable about the axis of rotation 69 stored in ball bearings 77. The drive pulley 78 is arranged at a free end of this shaft, which corresponds to the drive pulley 25 of the first embodiment, and at the other free end of the Shaft 76 is attached to the lower plate 65. The two plates point into the flow space 63 protruding Ribs 79, 80, as in the first embodiment, in one in the axis of rotation lying plane extend only so far into the flow space 63 that they coincide with the respective opposite Ribs cannot touch either when the plates 64, 65 rotate at different speeds.

The two plates 64 and 65 have a wavy cross-section in such a way that the flow space between the plates is also narrow and wavy in cross-section. As a result of this wavy, narrow design of the flow space, the sucked-in dispersion is particularly strongly swirled in this area, so that the tobacco fiber is intensely loosened and distributed in the flow.
In this exemplary embodiment, the outlet opening 81 is designed in the same way as the outlet opening 11 of the first exemplary embodiment and is connected to an annular channel 82 which corresponds to the channel 12 of the first exemplary embodiment

ίο and on the suction side of one in F i g. 6 not shown Fan is connected. In contrast to the first exemplary embodiment, the However, termination 83 corresponding to termination 8 is not tight at 84. At 84 there is rather a wider one annular space between the outer edge of the plate 64 and the opposite one Part of the housing 70. The annular space 85 located above it is open at 86, as in the first exemplary embodiment, so that there is pressure compensation here can take place. Since the system, consisting of the flow space 63, the line 67, the channel 82 and the parts of the first exemplary embodiment, not shown in FIG. 6, corresponding to parts 14, 50 and 49 is essentially closed, does not find any significant through the opening 86 Flow instead, in particular the flow occurring there is so small that no tobacco fibers there and be entrained through the gap 84.

The inlet connector 66 is designed at 93 as a sieve which surrounds the entire circumference of the inlet connector. The housing 70 has openings at 94 and 95. In this way, a shunt 96 arises which starts from the sieve 93 and opens above the sieve 74. The arrangement is dimensioned so that the main part of the air portion of the tobacco-air dispersion fed to the distributor flows through this shunt 96, as indicated by the arrows, so that the tobacco-air dispersion flowing in the distributor has only as small an air portion as possible. The lock that is in the in F i g. 6 is not shown, is designed exactly as in the case of the one in FIG. 1 to 4 illustrated embodiment. The same applies to the parts of the in FIG. 1 to 4 illustrated embodiment, which are shown in FIG. The distributor shown in FIG. 6 can be used in place of the distributor provided in the first exemplary embodiment and can be equipped and operated either with a sluice arranged at the bottom as in the first exemplary embodiment or with a sluice arranged at the top as described in the text relating to FIG. 4. The upper plate preferably also runs in this distributor

64 at top speed, the lower plate

65 at a lower speed and the carrier 73 with the screen 74 at strand speed around. The effect and mode of operation is then as described in the text relating to FIGS. 1 to 4. In a modification of the exemplary embodiments shown, the distributors can also have a vertical axis of rotation operate. In such a case, however, it is advisable to use below the one from the distributor to arrange exiting tobacco stream a conveyor belt that with stream speed and with the same speed as the stream circulates and its conveying surface in tangential extension of the Sieves 15 and 74 respectively. On this conveyor belt or one of these conveyor belts in extension downstream second conveyor belt is then the

Cigarette paper strips out. The stream of tobacco then arrives, lying on the strip of cigarette paper, into a device corresponding to the device 45 and is then, as in the text to FIG. 4 described, further processed.

Claims (9)

Patent claims: 1. Tobacco centrifugal distributor with a radial component to an axis of rotation directed distribution chamber, the outlet of which is a concentric to the axis of rotation, is an annular slot which is covered by a sieve, and with a sluice opening on the circumference of the distribution chamber, characterized in that that the sieve (15) has the shape of a flat circular ring and that the lock opening (29) is outside the plane of this Annular is arranged. 2. Apparatus according to claim 1, characterized in that the screen (15) at the rear in the area the lock is covered by a fixed cover (34). 3. Apparatus according to claim 2, characterized in that the sieve (15, 74) on one regardless of the distributor, preferably at strand speed around the axis of rotation (2, 69) of the distributor is arranged circumferentially drivable carrier (16, 73). 4. Device according to one or more of the preceding claims, characterized in that that a shunt (96) connected on the inlet side for the main part of the Tobacco-air dispersion promoting air is provided which opens into the sieve (74). 5. Apparatus according to claim 4, characterized in that the shunt (96) is on the inlet side is covered by a sieve (93) from the flow space of the distributor. 6. Device according to one or more of the preceding claims, characterized in that that the distributor is designed in its outermost area as an annular flow space (35), the one in a radial Direction has elongated, rectangular cross-section and that on the opposite to the axial entry direction directed side limited by the sieve (15) and closed to the outside in the radial direction is. 7. Apparatus according to claim 6, characterized in that the outer wall (10) of the termination (8) is interrupted (29, 30) and that a tangential to this wall (10) arranged, in the direction of the rotating movement of the screen (15) continuously drivable outer Conveyor (31) is provided. 8. Apparatus according to claim 6 and 7, characterized in that a second at a distance inner conveyor (38) which is arranged in relation to the outer conveyor (31) and can be driven in a revolving manner is provided is, which protrudes beyond the sieve (15) into the annular flow space (35). 9. Apparatus according to claim 6, 7 and / or 8, characterized in that one or two further continuously drivable conveyor are provided, which the space between covering the outer and inner conveyors on one or both sides in such a way are arranged so that all conveyors include a channel forming the outer part of the annular Flow space continues essentially tangentially. Considered publications:
U.S. Patent No. 3,096,770. For this purpose 2 sheets of drawings 709 587/158 5.67 Bundesdruckerei Berlin