DE2100248A1 - Device for heat, cold and / or material treatment of granular, free-flowing goods - Google Patents

Description

Godfather

Di? L, -Ing. H.Weickmann, Dipl.-Phys. Dr. K. Finckk Dipl.-Ing. F. A. Weickmann, Dipl.-Chem. B. Hueer

PROBAS-ViERES
by Gimborn & Co.KG.
424 Earner I / Rh.
Menonitenstrasse 6th

S MUNICH 86, DEN

PO Box 860 820

MUHLSTRASSE 22, CALL NUMBER 48 3921/22

SCGO

Device for heat, cold and / or material treatment granular, pourable gates

j) io invention relates to a device for heat, cold and / or material treatment of granular, free-flowing goods, in particular of annual and luxury foods v / ie coffees üiid-KaIiBO * 1fi-r ^a rotating, one layer the drum receiving the goods, means for axially conveying the goods in relation to the drum and within the drum arranged in a stationary manner and supplying the goods with an at least predominantly gaseous treatment stream. The treatment flow can be warm air for heating up or roasting, cold air for draining or another gas or another I) 3Fipf of any type, the additional liquid or solid swirling parts to the ohemi3Ohen or physical Treatment of the property may contain. The treatment flow can also be used at the same time to clean the goods from unused, particulate additions. Thus, when roasting coffee, the hot air flow inflated on it at the same time removes the -ö; ti% -: *> i§eii skins that are holding back the coffee beans.

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In facilities of the type mentioned iot known the Transport of the goods to be treated by means of vibrators, Carry out conveyor belts or pocket conveyors. These institutions have the specialist part that lasts the Bohandlunysstrom exposed good not equilateral.Kiiit ^ one Treatment is reliably mixed and that thus the individual grains of the goods are not evenly among each other be treated. Outside of the building, these facilities then require a large amount of construction work> v / oim several treatment zones, for example - one root and one Cooling zone, of the goods at different speeds should be run through. In that case, a separate conveyor device must be in front of each treatment zone be, and the conveyors nut each other be connected by transfer devices or by a partial overlap. The partial overlap, for example of conveyor belts, in turn requires their staggered arrangement in height and thus a large one Construction height.

There are still pneumatic transport devices known that produce a loosened, flowable mixture by blowing air on or under them. These However, transport facilities have a high energy requirement and therefore require high energy coke, and it is an elaborate regulation of the supplied air volume Required because if the regulation is not perfect, there is a risk of air breakthroughs and whirling up of fine particles and - in the case of perforated gutters - there is a blockage.

A device of the type mentioned has also already been proposed in which the means aum axial conveying of the goods opposite the 'i'rominol on

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the inside of which are formed worms. So that the screw can run past the radially outer ends of the nozzles, the distance between these Εηΰευ vc>: \ dur Imr-.nscite of the drum must be greater than the radial height of the screw threads. The ends of the DUeen have d ^ Before innrer a certain distance from that present in the drum of the iJohicht good Particularly in larger: ¹ layer thickness, however, the 33indringtiefe dea Behandln; igs tr ome ε limited, which results in a long treatment side and a not quite even treatment of the good.

The invention is based on the task of eliminating the disadvantages (| to avoid the known facilities and in a structurally simpler way an intensive treatment of the » To ensure good.

According to the invention, the object is achieved in a device of the eiiifv'ngi? The aforementioned type is solved by the fact that the drum is positioned vertically on its axis. Wandun ^ e ¹ ! is subdivided into several sections, that in each case Ewei in iörderBtroic jrachgöscheltete sections by r-indeateng an Ifenal provided on the outside of the Tron-wol and into it connected öi: id, / that the canal opposite the 'Lan &&!' direction μ of the drum is inclined in such a way that its rear end in the direction of rotation of the drum opens into the section located downstream in the direction of conveyance of the goods.

With the new facility, the goods are transported by means of the ones provided on the outside of the drum Channels. Each turn of the drum falls a part of the good one section into one Channel and .fails with more drone .i £ the TroEanel the canal in the Pürdorrichtu "., rich the following

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Section. It is particularly advantageous that the nozzles the surface of the layer present in the drum of the goods can be approached as far as desired and, according to prior training, I can even move into the shift can extend into it. This ensures a particularly intensive treatment.

Because the circumferential speed of the screw drum is greater than the transport speed of the goods in the longitudinal direction of the screw, there is a relative movement between the conveyor and the goods, which causes constant circulation and mixing of the goods, resulting in a completely uniform treatment of all individual grains of the Good results. The circulation is also improved by the openings in the channels provided in the individual sections as well as by the removal and supply of rope quantities of the goods that take place with each revolution of the drum to prevent, superfluous due to the closed shape of the snail tumbler. The laii - ^ & le can be distributed anywhere on the circumference of the Tz-owael . It is also possible to connect two successive sections in the conveying direction of the goods through several channels In another design, the drum carries on its outside a box-like housing extending axially over all sections and in the circumferential direction over part of the drum circumference, and the channels are between the V / and the

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Drum, the housing and provided in the housing, extending approximately radially to the drum and opposite the longitudinal direction of the drum inclined walls formed. Since the last-mentioned walls are each two adjacent Can separate channels from each other and since the box-like housing contain all the necessary channels This results in a construction that is very favorable in terms of space requirements and construction costs.

The mouth of a canal in the direction of delivery of the upstream section of the goods is preferably one between the sections perpendicular to the longitudinal axis Walls of the drum extending, rectangular outlet opening. A particularly compact shape of the channels results when the channels provided in the housing are inclined running walls have an angle of inclination of 45 ° with respect to the dex * longitudinal axis of the drum.

The mouths of the channels in the conveying direction of the Good / iiegenaejn. Sections can be guessed according to one Ausführungsforai be designed so that the mouth each is an approximately rhombic inlet opening whose of a parallel pair of sides in the Urafaiigrichtung next walls standing perpendicular to the longitudinal axis of the drum and its other parallel pair of sides along the im Housing provided, inclined walls runs. On the other hand, there is a wide implementation option make use of the fact that the downstream mouths of the channels, i.e. the inlet openings, are less must be larger than the outlet openings, since only the latter the greetings of each with one revolution of the drum Partial quantity of the goods taken from a section determine. According to this second embodiment form

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it is provided that the mouth of a channel in your in the conveying direction of the material downstream section an approximately isosceles right-angled inlet opening whose one isosceles side in the circumferential direction is next to that in the opposite direction to the conveying direction lying, perpendicular to the longitudinal axis of the drum and the other isosceles side along a surface line of the drum runs. H ^ erdurcti becomes one Particularly narrow design in the initial direction of the drum of the box-like housing achieved.

On the side of the drum opposite the box-like housing, at least one counterweight can be attached which balances the weight of the box-like housing and the channels contained therein in such a way that the center of gravity of the drum, box-like housing, channels and counterweight coincides with the axis of rotation of the drum. The drum can be protected against heat losses by means of insulation. It is also possible to heat the drum from the outside, and if the device is used for roasting, this heating can take place in addition to the supply of heat from the treatment stream.

In order to further promote the mixing of the material in the drum, you can use the sections on the inside the drum driver webs can be provided, the radial height of which is less than the distance between the radially outer ends the nozzles from the inside of the drum.

The supply of the goods in the first section in the direction of conveyance of the goods must be carried out in such a way that the goods do not, for example, pass untreated directly into the channel which connects the first section with the second section in the direction of conveyance. This becomes what is called an unfolding

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avoids that the first section in the conveying direction of the goods has an area which has no nozzles and to which the goods are fed, that at least in this area on the inside of the drum a helical guide plate is provided which brings the goods into an area of this first having a bosom Sections • promotes and that a channel opens into the area having nozzles. In a corresponding manner, it can be prevented that the last step in the direction of conveyance of the goods occurs. Well after his arrival in this section is requested immediately. It is provided here that this section has an area which has no nozzles and from which the material is carried away, so that at least one screw on the inside of the drum at least in this area! inienföriaigea guide plate is provided, which conveys the material from a nozzle-having Boreich this last section and that r.in channel opens into the nozzle-having area.

The new facility offers the option of simpler Way on the axial length of the iroimiel treatment zones with mutually different bedding pumps different transport speeds within the scope of the goods. Different transport speeds will be namely achieved in a simple manner that the sections according to the respective desired layer thickness of the goods have different axial lengths and / or that the channels according to the desired Layer thickness have different cross-sections.

In the pail that the establishment rr-um roasting coffee, Cocoa or the like. serves, can be used in addition to or instead of the Nozzles other hot means may be provided.

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& AD OKIGfNAL

The invention v / ith reference to the drawings hereinafter explained, in which illustrated embodiments are ^1. Show it:

.FJg. 1 Einsn longitudinal section through a device according to the invention in a schematic representation;

Pig.2 is a top view of the bottom of the drum the device according to Pig.1;

Pig.3 a cross-section through the drum at the establishment according to Figure 1 along the section line III - III in Pig.2;

Pig.4 a cross-section through the drum at the establishment according to i'ig.1 along the section line IV - IY in Pig. 2 after rotating the drum by 90 ° j

Pig.5 a top view of the bottom of the door one further embodiment of a device geraäß the invention.

The treatment facility shown in Pig.1 granular, pourable goods know a drum 10 which is rotatably mounted on roller 11,12. Not that The drive shown is preferably continuously variable in speed to adapt to different types of goods adjustable.

Inside the drum 10 there are nozzles 13 in groups fixedly arranged on a carrier 14. This carrier 14 can be tubular or channel-shaped, and the treatment stream can pass through it Nozzles 13 are supplied. The grains dee gates

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v / earth, as can be seen from Pig »3, on the inner wall the drum 10 carried along by friction until they slide off and are turned over. Therefore, see the center of that formed by the material in the drum 10 Layer not perpendicularly below the longitudinal axis of the Drum but is opposite to one depending on different angles depending on the properties of the property. The nozzles 13 should be perpendicular to the surface of the material flow offset in this way or preferably extend into the material in this direction. In order to achieve this with different types of goods, it can be provided that the angle of attack of the nozzles 13 each in one to the longitudinal axis of the drum vertical plane is adjustable. The adjustment takes place here in that the carrier 14 with a group of Nozzles 13 is adjusted about an axis parallel to the longitudinal axis of the drum 10. Is the carrier 14 eccentric to Arranged longitudinal axis of the drum 10, for example, the adjustment of the carrier 14 about its longitudinal axis or about the longitudinal axis of the drum 10.

Since the angle of repose of the material changes during its treatment, for example by the absorption or delivery of Moisture, can change and accordingly different in each case The angle of attack of the nozzles 13 may be required in different treatment zones Groups of nozzles 13 arranged independently of one another adjustable carriers can be provided.

To increase the even treatment or for example for only very brief heating of the individual grains of the product, it can be advantageous

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- ίο -

to set the nozzles 13 in an oscillating motion. This is done in a structurally simple manner. That the carrier 14 with a group of Nozzles 13 around a parallel to the longitudinal axis of the Tronwel 10 Axis is driven back and forth swiveling. The limits of the swiveling path can be set in the sense of a definition of a mean angle of attack, for example by adjusting the eccentricity of a drive, changeable aein.

The drum 10 is according to the invention by means of walls 15 to 15 which are perpendicular to its longitudinal axis 18 into a first section 19, a plurality of middle sections 20-22 and a last section 23 divided. The first section 19 has a no nozzles 13 on v / ironing area, which the goods over a Filler neck 24 is supplied. On the axial length of the first section 19 is on the inside of the Drum 10 a helical guide plate 25 is provided, which the material in a nozzle 13 having Area of the first section 19 promotes. In this area opens a channel with an outlet opening is formed in a box-like housing 26 provided on the outside of the drum 10. This Channel conveys in a manner to be described in greater detail below with each revolution of the drum a subset of the goods from the first section 19 in the adjacent middle section 20. In the same In this way, the material reaches the remaining middle sections 21, 22 and the last section 23. This has in his right area in Fig.1 no nozzles. From this area, the treated material is Drain 27 discharged. In the area the Guü is means one provided on the inside of the drum 10,

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ochraubonförDiigan IiGitbloohs 28 promoted after it previously in your left in Figure 1, having nozzles 13 Area of the 1 ei · κ to Ji. Sections 23 was treated.

The Bfib'-indXan ^ ivtvüin is, after he has pervaded the estate and returned to the hut of the Trcisiael 10 Kurücfcfcfcfcfcfc, by a?} Aus s .la ßs tut sen 29. On the box-like Gehu.ur.if? On the opposite side of the drum 10, a counterweight 30 is attached for weight compensation.

Pig. 2 shows a view of the inside of the drum μ 10 in that bay in which the box-shaped housing 26 is provided on the outside. The 3 figure is, however, simplified to the extent that, in addition to the first section 19 and the letateri section 23, only a single middle section 2Ü ^{1 is} provided. Y / ie from FIG. 3 recognizable eats. The housing 26 consists of an approximately radially extending end wall 31, an outer wall 32 parallel to a tangential plane of the drum 10 and a rear end wall 33 gradually approaching the drum circumference from its rear end in the direction of rotation The housing 26 extends over all sections 13 to 23 (Fig.1) or 19 ^ 20 «, 23 (Pig2). I.

In the G-housing 26, as can be seen from FIG. 2 , channels 34, 35 are formed, each of which is connected to adjacent sections 19, 20, and so on. 20 ^l , 2p connect. The fanals 34,35 are formed between the wall of the drum 10, the housing 26 and provided in the housing 26, extending approximately radially to the drum 10 and inclined with respect to the longitudinal direction of the drum 10: walls 36,37,38 ; .The licensing angle of these V / ands 36 _; 37.3B

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“AD ORIGINAL

-η-

"is about 45 ° with respect to the longitudinal axis of the Troimnel

The mouth of a channel 34 »35 in the section 19 or 20 ¹ located upstream in the conveying direction of the goods is in each case a rectangular outlet opening 39 or 40 extending between the walls 15, 18 of the drum perpendicular to the longitudinal axis. The opening of a channel 34-35 into the section ^20f or 23 located downstream in the direction of conveyance of the goods is in each case an approximately rhombic inlet opening 41 and 42, respectively.

From the Pig. 3 and 4 it can be seen in what way with each revolution of the drum 10 at least a partial amount of the material is conveyed from the first section 19 into the adjacent central section 20. If the rectangular outlet opening 39 is located under the product according to Figure 3, it runs into the channel 34. As the drum 10 drills further, the product rinses through the channel 34 and, as a result of its inclined course, is in the area of the Section 20 'brought where it emerges from the inlet opening 41. This can be seen from Pig. 4. In a corresponding manner, a sample taken from the central portion 20 · through the outlet opening 40 T _e is ilmenge through the channel 35 hinduroh conveyed to the last section 23rd

In Pig.5 there is another representation corresponding to Pig.2. Embodiment of the invention shown, in which, however, the box-shaped housing has an approximately U-shaped shape. The outlet openings 391, 401 correspond to the outlet openings 39, 40 in Figure 2. The _r at 45 ° to the longitudinal axis of the T Ommel 10 extending.

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Falls 361, 371, 381 arranged in the housing 261 are, however, shortened compared to the walls 36, 37 »38. The mouths of the channels 341> 351 Bind therefore isosceles right-angled inlet openings 411,421, their isosceles side in the catching direction next to the opposite direction to the conveying direction, Wall 151 or 161 standing perpendicular to the longitudinal axis of the drum 10 and the other isosceles Side runs along a surface line of the drum 10 . How the device works during transport a subset of the goods from the first section to the adjacent middle section 201 is the same as with the .Fig. 1 to 4 described device.

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Claims (1)

EXPECTATIONS 1.) Equipment for heat, cold and / or substance treatment granular, free-flowing goods, especially from Bahrunpjo and luxury items such as coffee r-od «^ - or " ¹ Iva'lfe
Cocoa with a rotating drum that absorbs a layer of the material, means for axially conveying the material opposite the drum and fixedly arranged nozzles inside the drum which supply an at least predominantly gaseous treatment stream to the material, characterized in that the drum (10) has a Walls (15 to 18; 15, 18; 151, 161) which are perpendicular to their longitudinal axis are subdivided into several sections (19 to 21; 19, 20 ″, 23; 191, 201) so that two sections (19 Ms 23; 19, 20 ", 23; 191,201) are connected by at least one channel (34, 35; 341 * 351) provided on the outside of the drum 10 and opening into it, and that the channel (34"35; 341, 351) is opposite to the longitudinal direction of the The drum (10) is inclined in such a way that its rear end (41, 42; 411, 421) in the direction of rotation of the drum (10) opens into the section (20 ¹ , 23; 201) located downstream in the conveying direction of the goods. 2.) Device according to claim 1, characterized in that that the nozzles (13) extend into the layer of the material. 3.) Device according to claim 1 or 2, characterized in that that the canals on the circumference of the Trosamel (10) are offset from one another in such a way that the center of gravity the drum (10) together with the channels aumi lies approximately in the axis of rotation of the drum. 209831/1035 4.) Device according to claim 1 or 2, characterized in that the drum (10) on its outside a vrAal over all sections (19 to 23J 19.20 '*, 23: 191,201) and in the circumferential direction over a rope of the drum circumference extending, box-like Gelmuse (26; 261) and that the channels (34>55; 341 »351) between the wall of the 3DroEmel (10) j the housing (26; 261) and provided in the housing, are approximately radially to the drum (10) extending walls (36, 57, 38; 361, 371, 381) that extend obliquely with respect to the longitudinal direction of the '.üroriniel (10). 5.) Device according to claim 4, characterized in that μ äaß the mouth of a channel (34,35; 341,351) in the section (19,2O ¹ ; 191,201) located upstream in the Pörderriehtung of the goods between ö.en perpendicular to The walls (15, 18 ^ 151 »161) of the drum (10) extending _{along the longitudinal axis are 5} rectangular run-out openings (39, 40; 391, 401). 6.) Device according to claim 4 and 5 $, characterized in that the inclined walls (36,37,38; 361,371,381) provided in the housing (26; 261) have an angle of inclination of about 45 ° with respect to the longitudinal axis of the drum (10 ) to have. % 7-) device according to claim 5 and 6, characterized in that that the mouth of a channel (34,35) in the downstream in the Füräerrichtung of the property lying section (20 *, 25) an approximately rhombic Inlet opening (41,41) is one of which is a parallel pair of sides in the circumferential direction next to the perpendicular to the longitudinal axis of the drum (10) standing walls (15,13) and its other parallel pair of sides along those provided in the housing (26), obliquely running walls (36.37> 38). 209831/1035 8 ») set up according to. Claim. 5 or 6, characterized in, that the mouth of a canal (341 »3t> 0 in the section (201) located downstream in the conveying direction of the material, an approximately equidistant right-angled section Inlet opening (411,421) is whose an isosceles side in circumferential direction next in the opposite direction to the conveying direction lying, perpendicular to the longitudinal axis of the drum (10) standing wall (151,161) and the other isosceles Side runs along a surface line of the drum (1O). 9.) Device according to one of claims 4 to 8, characterized in that on the box « like housing (26; 261) opposite side of the drum (10) at least one counterweight (30) is appropriate. 10.) Device according to one of the preceding claims, characterized in that the drum (10) wittels an insulation against thermal losses. 11.) Device according to one of the preceding claims, gekennseichnet characterized in that the drum (10) is heated from the outside. 12.) Device according to one of the preceding claims, characterized in that in the sections (22, 23) on the inside of the drum (10) Mitnehraerstege (43,44) provided sinü, the radial height of which is less than the distance between the radial outer ends of the nozzles (13) from the inside of Treme 1 (10). 13.) Eirjrichtung according to one of the preceding claims, characterized in that the in .Forderriohtung 209831/1035 of the gate's first section (19) has an area which has no nozzles and to which the goods are fed is that at least in this area on the inside of the drum (10) at least one helical Guide plate (25) is provided, which feeds the material into a nozzle (15) on v / ironing area of this first section (19) promotes, and that a channel opens into these nozzles (13) having area. H.) Device according to one of the preceding claims, characterized in that the in .der conveying direction the last section (23) of the goods has an area which has no nozzles and from which the goods are discharged that at least in this area on the inside of the drum (10) at least one helical Guide plate (28) is provided, which the material from a nozzle (13) having area this last gate (23) promotes and that a channel opens into the area having nozzles (13). 1.5.) Device according to one of the preceding claims, characterized gekennseich.net that the sections accordingly have different axial lengths depending on the desired layer thickness of the goods. 16,) device according to one of the preceding claims, characterized in that the channels are different according to the desired layer thickness of the material Have cross-sections. 17.) Device according to one of the preceding claims for roasting coffee, cocoa and the like., Characterized characterized in that next to or instead of the nozzles (13) other heating means are provided. 209831/1035 J * Blank page