UA72595C2 - Device and method for producing a filter cable treated with an additive - Google Patents

Abstract

The invention relates to a device for producing a filter cable (1) that is treated with an additive and consists of cellulose acetate. Said device comprises an intake sleeve (16) and an intake funnel (15) which projects into the larger intake opening of said sleeve, whereas the filter cable (1) emerges from the smaller outlet opening of the intake sleeve (16) and an intake nozzle (14) which guides the filter cable (1) into the larger opening of the intake funnel (15). The invention is characterized in that an additive nozzle (20) is guided through the intake nozzle (14) and the intake funnel (15) following the run of the filter cable (1), opening into the intake sleeve (16) in order to dispense the additive in a discontinuous manner in the form of portions (28) into the filter cаblе (1).

Description

The invention relates to a method of manufacturing an admixture-treated filter harness from cellulose acetate, into which the admixture is discretely introduced in the form of portions, as well as a device for implementing the method.

Such a device is already known from the description of the European patent EP 0128031 VI1. In it, the cellulose acetate tow is fed to the inlet nozzle of the intake chamber through the expander nozzle, exhaust rollers and guide rollers, which introduces the cellulose acetate tow into the forming shell of the tow. An inlet throat is placed between the intake nozzle and intake chamber to facilitate routing of the cellulose acetate harness. In one embodiment, a nozzle for adding an impurity to a bundle of cellulose acetate is inserted into the inlet nozzle (Fig. 1 and 4), and in the second embodiment, a nozzle for adding an impurity is inserted into the inlet neck (Fig.b).

The disadvantage of the known devices is that none of them is intended for the manufacture of a discrete multi-component rod.

In 5 3,847,064 a device is described in which the solid substance is discretely supplied to the filter harness, and the movable mandrel functions as a nozzle for the introduction of the impurity. The disadvantage of this method is that it "fails" at high speeds.

From OE-C-2149434, a method of manufacturing multi-component filters for tobacco smoke is known, according to which a thermoplastic material in a foamed state is extruded and, with the help of an extruder head and an extruder, gives it the shape of a filter rod in a known manner. An admixture is periodically introduced into the extrudate, which at the point of introduction penetrates into the foamed extrudate and in this way alternate zones of admixture and foamy material are formed in the filter rod.

The task of the invention is to develop a simple method of introducing solid impurities into the filter harness even at high transport speeds.

Another object of the invention is to develop a device for the discrete introduction of solid impurities into the filter harness, and the impurity is "injected" into the core zone of the filter and the boundary layer between the core and shell materials has the smallest possible thickness.

In relation to the method, the task set is solved by the fact that in the method of manufacturing an admixture-treated filter harness from cellulose acetate, into which the admixture is discretely introduced in the form of portions, according to the invention, pre-formed portions of the admixture are injected into the filter harness with the help of transport gas through the impurity pipeline.

With regard to the device, the problem is solved by the fact that, according to the invention, the impurity nozzle is passed in the direction of movement of the filter harness through the inlet nozzle and the inlet neck to the inlet chamber, where it ends and, thus, through it, the impurity can be introduced directly into the filter harness.

It is advisable to set the speed of transportation of the filter harness 1.2-2 times, preferably 1.5 times higher than the speed of transportation of impurity portions. Thanks to this, a very even distribution of the impurity is achieved at high transport speeds.

Both granular, fibrous or planar, and capsule-like materials can be used as solid impurities. For example, selective sorbents such as activated carbon, organic acids, encapsulated aromatic materials or biodegradable materials such as cellulose acetate or cellulose in the form of fibers can be used. In addition, pure or treated planar materials such as cellulose ("paper scraps") can also be used.

Below, the invention is explained in more detail with the help of illustrations. They schematically depict:

Fig.1. corresponding inventive device;

Fig. 2. a fragment of the corresponding inventive device according to Fig. 1;

Fig. 3. the second example of the implementation of the invention for introducing an admixture into the filter harness;

Fig. 4a and 465 modifications of the device according to Fig. 3;

Fig. 5. the device according to Fig. 3, equipped with a vibrating conveyor;

Fig. b6. another form of implementation of the invention;

Fig. 7. section A-A from Fig.b.

Fig. 1 shows a tow 1 made mainly of cellulose acetate, which is pulled through various technological positions up to the forming chamber 21, from which it comes out in the form of a filter rod 22.

The bundle 1 is pulled by two pairs of pulling rollers 6, 7 and 8, 9 from the bale 24, for which both pairs of rollers have drives. The filter harness 1 is passed through the first expanding nozzle 2 and the second expanding nozzle 3, which have a known design and expand the compressed harness 1. Between the first expanding nozzle 2 and the second expanding nozzle Z, the direction of the filter harness 1 is deviated by an angle of about 135" using a knee 23.

In the direction of transportation of the filter harness 1, after the second expanding nozzle Z and before the first pair of drawing rollers b, 7, a pair of brake rollers 4, 5 designed to stabilize the speed of transportation of the filter harness 1 is installed.

In the direction of transport of the filter harness 1, after the second pair of pulling rollers 8, 9, the following elements are installed in the following sequence: first, the third expanding nozzle 10, then the spraying chamber 11, a pair of deflecting rollers 12, 13 and, finally, the inlet nozzle 14. The outlet of the inlet nozzle 14 is introduced into the inlet 15, the outlet of which, in turn, ends in the inlet chamber 16. The inlet chamber 16 is part of the forming chamber 21, in which the final formation of the filter rod 22 takes place. Under the forming chamber 21, a forming conveyor 17 is placed, designed to move the filter rod 22 at the desired speed.

In the inlet nozzle 14, a nozzle 20 for impurities is installed, which is better seen in Fig.2. The nozzle 20 introduces the impurity from the tank 18 into the forming chamber 21 with the help of the pump 19 and the pipeline 25 for the impurity.

Figure 2 schematically shows a cross-section of the inlet nozzle 14, the inlet neck 15 and the inlet chamber 16. At the same time, it can be seen how the filter harness 1 is passed through the inlet nozzle 14 t; treated with air or gas, resulting in fluffing of cellulose acetate.

Cellulose acetate fluffing occurs mainly in the inlet 15 and continues in the inlet chamber 16.

According to the invention, the admixture nozzle 20 is passed through the inlet nozzle 14 and the inlet neck 15 to the inlet chamber 16, where it terminates, whereby the admixture can be introduced at a rate of Mo into the fluffed cellulose acetate tow. The transport speed of the filter harness 1 is indicated

Mi, and the expedient ratio of the speeds of the filter harness 1 and impurities is Mi/U2»1.5.

Thus, the speed of transport of the filter bundle 1 is always greater than the speed of the impurity, thanks to which a very even distribution of the impurity in the bundle is achieved.

The device in Fig. 3 basically corresponds to the device described using Fig. 1, however, in it the solid admixture is not brought from below by means of a pump, but from above under the influence of gravity. In Fig. 3, the corresponding structural elements have the same positional designations as in Fig. 1.

Fig. 3 also shows the filter harness 1, passed through the deflection blades 12, 13, through the inlet nozzle 14, the inlet neck 15 and the inlet chamber 16. The inlet chamber 16 is adjacent to the forming chamber 21, under which the forming conveyor 17 is placed. In this form execution for the introduction of a solid admixture into the filter bundle 1 in the inlet chamber 16, a certain number of holes 29 are provided, which serve to divert the gas used for transporting the solid admixture to the outside.

As in the device according to Fig. 1, the nozzle 20 for impurities extends through the inlet nozzle 14, the inlet neck 15 and the inlet chamber 16. However, the inlet end of the nozzle 20 is not connected to the pump, but is connected to the hopper by the pipeline 25 for impurities 30, which contains a solid admixture 33, which is fed into the nozzle 20 for the admixture under the action of gravity in combination with the action of the transport gas. For this purpose, in the shown embodiment, a gas line 31 is installed in the bunker 30 from above, which near the junction of the pipeline 25 for the admixture and the bunker 30 ends with a narrowed section 32, which forms a capillary.

During the operation of the device, a solid impurity with the help of transport gas in the form of a mixture of gas with an impurity through the pipeline 25 and a nozzle 20 enters the filter harness 1, the individual fibers of which capture solid particles of the impurity from the flow of the mixture of gas and impurity, and the transport gas can exit through the holes 29 from the intake chamber 16.

The solid admixture can be fibrous or contain particles of size from 10 to 400 mesh (standard

USA A5TM E11-61), that is, with a diameter from 40 μm to 2 mm.

As in the embodiment according to Fig. 1, the speed Mi of the filter harness 1 in the inlet chamber 16 is selected to be 1.2-2 times greater than the speed Mg of the mixture of gas and impurities flowing from the narrow pipeline.

In the embodiment according to Fig. 4a, the gas pipeline 31 is not fed from above in the hopper 30, but its narrowed section 32 is introduced into the elbow connecting the pipeline 25 for impurities and the nozzle 20 for impurities. With such a design, a shorter gas pipeline is required than in the example according to Fig. 3.

In the embodiment according to Fig. 46, an additional pipeline is connected to the hopper 30, which sucks the solid admixture 33 from it and leads it to the pipeline 25 and, thereby, to the nozzle 20 for the admixture.

Fig. 5 shows another form of execution, modified in part of the bunker 30. In it, as well as in the form of execution according to fig. 3, the gas pipeline 31 is connected to the bunker 30 from above. The narrowed section 32 is made curved to ensure the supply of solid admixture in the center of the hopper 30.

In this embodiment, the solid admixture is supplied by means of a vibrating conveyor 34 from the hopper 35 through a horizontal vibrating pipeline 36. At the same time, thanks to the vibrating conveyor 34, particles of the solid admixture prone to sticking are constantly shaken and do not stick together on the way to the nozzle 20 for the admixture.

Figure 6 shows another embodiment of the invention, in which, as in the embodiment according to Figures 1 and 3, the filter bundle 1 is fed into the inlet chamber 16 through a pair of deflecting rolls 12, 13, through the inlet nozzle 14 and the inlet neck 15, from which it reaches the forming chamber 21, which leaves in the form of a filter rod 22 with portions 28 of solid admixture 33 discretely introduced into it. In this embodiment, similar elements also have the same positional designations. It can be seen from the figure that portions 28 of the solid admixture 33 are discretely introduced into the inlet nozzle 14 through the pipeline 25 for the admixture.

Transport gas, which enters together with the admixture, is removed through holes 29.

For portioning the solid admixture 33, it is possible, for example, to feed the solid admixture 33 from the hopper 30 to the double-sided toothed belt 26. The double-sided toothed belt 26 runs around the first toothed wheel 38 and the second toothed wheel 39, and on the inner surface of the belt, ordinary (drive) teeth are made.

One of the gears 38 or 39 is equipped with a drive not shown. On the outer surface of the double-sided toothed belt 26, teeth are also made, between which there are recesses 40, into which the solid admixture 33 falls and when the gears 38, 39 rotate, it moves from the hopper 30 to the pipeline 25 for the admixture. Thus, the depressions 40 between the outer teeth of the double-sided toothed belt 26 serve to form portions 28 of the solid admixture 33, the size of which depends on the width of the belt 26, and which are transported by the pulsed gas flow from the recess 40 into the pipeline 25 for the admixture, as shown in Fig. 7 . For this, the double-sided toothed belt 26 in the area of the hopper 30 is covered with a casing 27 over the entire width, which forms a closed chamber or channel.

In addition, a disc 37 with holes 41 is installed on the first toothed wheel 38, the distance between which is equal to the distance between the recesses 40 between the teeth; these holes 41 close and open the supply of compressed gas to the gas pipeline 31, due to which, when moving the double-sided toothed belt 26, the compressed gas is always supplied to the depressions 40 synchronously, and the portions 28 of the solid admixture 33 present in the depressions 40 are blown out of the depressions 40 into the pipeline 25 for the admixture.

Received in one way or another, known to a specialist, portions 28 of impurities, the diameter of which is smaller than the diameter of the filter rod 22, thanks to which the portions 28 can be introduced into the material of the filter rod 22 and completely covered by it, gas or other means suitable for transporting portions 28 , through the pipeline 25 for impurities are fed into the inlet 15. As a gas, for example, nitrogen can be used. At the exit from the inlet, the portions 28 are injected into the filter rod 22 in such a way that they are placed along the axis of the filter rod 22. By selecting the speed of transport of the portions 28 of impurities, the desired distance between the portions 28 in the filter rod 22 can be set in a simple way, and the upper limit of the speed transportation is achieved when individual portions 28 in the filter rod 22 in the axial direction touch each other.

2 B ge ko

In Uk and U ni NTU e 1: SYA v-th. lush, well-known NOW pshe she m a pram m 5 x nov i u! mine

M. SEP doyu

That's it! and their era

Bosch hi vv t? and Ya ran-Yah U i

Book 5 - ha food lake

They are in KU

N Ron and Opemkh

Ki zhk

TU You ge TI I K :5 K : I syu K. Ne N ni KOH I y y hn nn p ia kh

N N vra i i a a h: N i KD um pu oo Y a ooo rai ly chin Y -- NV! I'm sorry

And h

M x x y: -x--; and KZ Her Z

WHAT WE ARE:

I 5 That Mt

HOW H- t tya

I have my own I'm sorry

TU g no

PKogtenttu MO kl, them

Moi, that g zhkozh nosh

Me M va : i N me ve o you ste SCHI

Esh ZEVEVENETSE pr ya t mm M rt nnlnzhaschnia, 0001 Gdynia i po» 3: ry ty of making it in

Ka cha ya Ky To "M 7" i three fr hu Hom, sing

TC ro " t nak me EI

IMC, but also zh them" t

And they began to pour a stream of foam -e pYtu tya i yar N Those tires write in u yar | !

Kk Her ra! t yN t

Pav and

Kent j oh gpulsmoy mom ann Kt tazh U Y Zo pkorekoy ul ko M o. ka gshoosko

By: sk, ozzhsno ze TO lizh lm stv vh, yon yuDode yah me i il zh i IY SCHE a sna VINY iz tyvy TSO g yad | chic o

Yat and Fu yaz

So, ozh

In shk hm

Yan day M on « sh ni zho no dna k 7 Her yi ii

TT EM days 7 N and so etno

More ! Me TU de ho OK av NVVYko IC KVK Byah pai ": гг ХЕ

Phew in :

HE

Claims (14)

1. A method of manufacturing an admixture-treated filter harness (1) from cellulose acetate, into which the admixture is discretely introduced in the form of portions (28), which is characterized by the fact that the pre-formed portions (28) of the admixture with the help of transport gas through the pipeline (25) for the admixture injected into the filter harness (1). 2. The method according to claim 1, which differs in that air is used as the transport gas. 3. The method according to claim 1, which differs in that nitrogen is used as a transport gas. 4. The method according to claim 1, which differs in that the speed Mi of transporting the filter harness (1) is 1.2-2 times, preferably 1.5 times greater than the speed M2 of transporting parts of the impurity. 5. A device for the production of an admixed filter harness (1) from cellulose acetate, which contains an inlet chamber (16), a larger inlet opening of which has an inlet neck (15), and a filter harness (1) exits through a smaller outlet opening of which , as well as the inlet nozzle (14), through which the filter harness (1) is passed into the larger opening of the inlet neck (15) and at the same time gas is supplied, which differs in that the nozzle (20) for impurities is passed in the direction of movement of the filter harness (1) through the intake nozzle (14) and through the intake neck (15) to the intake chamber (16) and ends in it to inject the impurity into the filter harness (1). 6. The device according to claim 5, which differs in that the speed Mi of transporting the filter harness (1) is 1.2-2 times, preferably 1.5 times greater than the speed M2 of transporting parts of impurities. 7. The device according to claim 5, which differs in that the admixture in the form of a solid admixture (33) is supplied from the hopper (30) through the pipeline (25) for the admixture. 8. The device according to claim 7, which is characterized by the fact that for transporting the solid admixture (33) to the nozzle (20) for the admixture, the transport gas supplied by the gas pipeline (31) is used. 9. The device according to claim 8, which is characterized by the fact that the gas pipe (31) has a narrowed section (32) at the end. 10. The device according to claim 9, which is characterized by the fact that the gas pipeline (31) is introduced into the hopper (30). 11. The device according to claim 10, which is characterized by the fact that the gas pipe (31) is inserted directly into the pipeline (25) for impurities or into the inlet nozzle (20). 12. The device according to one of the previous points, which is characterized by the fact that it contains a vibrating conveyor (34) located near the hopper (30), designed to supply the adhesive admixture (33) through the vibrating pipeline (36) to the hopper (30). 13. The device according to one of the previous points, which is characterized by the fact that the pipeline (25) for the admixture is adjacent to the batch device, from which the solid admixture (33) is removed in portions (28). 14. The device according to claim 12, which is characterized in that the portioning device has a double-sided toothed belt (26) with portioning recesses (40) that serve to transport the solid admixture (33) from the hopper (30) to the pipeline (25) for impurities