US1606322A - Rotary drying or torrefying apparatus - Google Patents

Description

Nov. 9 1926.

P. SCRIVE ROTARY DRYING OR TORREFYING APPARATUS Filed August 11, 1925 Patented Nov. 9,192fi.

warren srarss BAUL scams. or rams, FRANCE.

1 t eny-2*;

ROTARY-DRYING on' roannrrrns arrnnerus.

Application filed August 11, 1925, Serial no. ia'esifaad in France a ust ad se-i.

The present invention con'cernsan improvement in rotary drying or torrefyin'g" apparatus, which is characterized in that the drying or torrefying apparatus const1tuted by an inner framework on which are detachably secured. the side walls.

Such an arrangement allows of effecting with a great facility the cleaning of the drum, it will therefore be preferably adopted in case the drying apparatus must serve'for several materials successively, especially when these materials must preserve a great degree of pureness.

The accompanying drawing illustrates by way of example only, a form of carrying out the invention.

Fig. 1 is an end and sectional view of the drying drum;

Fig. 2 is a sectional view of a' detail of assemblage Fig. 3 is another detail view, in section.

The essential of the invention consists-in mounting the side walls 1 of the drum on an inner framework 2 in an easily detachable manner.

In the example illustrated, the framework is constituted by longitudinal bearers 2 of angle iron the webs of which form an angle of 120, these iron members being held by radial arms 2* so that their edges coincide with those of a hexagonal prismatic surface.

It is to be noted that this method of con struction of the framework is completely independent of the invention and that this framework can be devised in any manner.

In the example chosen, the detachable side walls 1 are formed from sheet iron plates.

The walls 1 carry staples 3 riveted or secured in another manner, near'o'ne of the longitudinal edges; these staples, as shown in Fig. 2, lit in one of the webs of the iron members 2 so as to hook thereon. On the other longitudinal edge, opposite the staples 3, the plates 1 are provided with notches 4, which. upon assemblage, allow the passage of the stems ofthe bolts 5 screwed or secured in another manner in the second web of-the iron members 2; wing nuts 6, or the like, are screwed on the bolts 5 for securing the whole. For facilitating the assemblage or the disassemblage, the plates 1 are provided with handles/7, secured in any suitable manner and for instance by riveting.

For disassembling, it sufices to unscrew deep forallowing the plate 1 to effect a translation atright angles'to the iron members Q thistranslation' having for effect to disengage the staples 3 from the iron members 2 and thus release the plate which can be easily removed and separately cleaned with the greatest facility.

The plates 1 can be perforated on all or a portion of their surface; in the example chosen, they internally carry perforated buckets 8 which serve to raise the material for subsequently discharging it in the following buckets. The perforations allow the hot gases to pass through the material'contained in the Various buckets such as 8.v

It is obvious that the chamber in which is placed the drum, which can be taken to pieces, must have at least aside partition capable of being opened for givingaccess to the drum and permitting the removal of the plates forming the sidewalls of the same,

for the purpose of cleaning them. The plates once removed, the cleaning of the framework can be efiected with the greatest ease.

Of course, the arrangements above described'by way of example have been indi' cated only for giving a better understanding of the features of the invention; these arrangements can receive numerous modifications which, as they do not alter in any way the essential feature nor the purpose aimed at are included within the scope of the invention.

For instance, the hexagonal shape illustrated can be replaced by any other shape,

provided the panels remain detachable.

The drum can also be made of metal-or any other suitable material; for obtaining walls resisting to the action of acids, use can be madefor instance of cement or of fibre-cement. a

That I claim as my invention and desire to secure by Letters Patent is:

1. In a rotary drier, a drum comprising longitudinal, parallel members, means for assembling and holding said members to form a frame, and plates removably fastened on said longitudinal frame members, said plates alone constituting the side walls of the drum. I

2. In a rotary drier, a drum comprising longitudinal,parallel members arranged to form a frame, plates for constituting the outer walls of said drum, and means for removably fastening said plates on said longitudinal frame members.

3. A rotary drum for drying and roasting, con'iprising longitudinal, parallel members angle-shaped in cross-seetionand arranged to form a prismatic frame, plates adapted to form tile Walls-0t said drum, and means on said longitudinal frame members on one side and on the plates on the other side for removably fastening said plates on said angle-shaped frame members.

igitudinal beams angle-shaped in cross paraiielly arranged to form 21 lm section and frame, an lnner "frame connected with the outer trame 'oy radially disposed arms, and plates removably tastened on said longitu in a rotary drier, a drum comprising dinal beams said plates alone forming the Walls of the drum 5. in a rotary drier or roaster, a drum,

comprising a frame of longitudinal angler PAUL soiarvE.

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