US1023157A - Drying apparatus for bagasse. - Google Patents

Description

J c. P. LAFEUILLE. DRYING APPARATUS FOR BAGASSE.

APPLICATION IILIDHNOV 15. 1909.

1,023,157. Patented Apr. 16, 1912.

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JULES CHARLES FERNAND LAFEUILLE, or CHARMES, NEAR LA Fran, F ANCE.

DRYING APPARATUS FOR BAGASSE.

Specification. of Letters Patent.

Application filed November 15, 1909. Serial No. 528,141.

It; all whom it may concern Be it known that I, JULEs CHARLES FER- NAND LAFEUILLE, a citizen of the Republic of France, residing at Charm'es, near La Fere, Aisne, France, have invented new and useful Improvements in Drying Apparatus for Bagasse, of which the following is a specification.

This invention relates to a new or im-- proved process for the mechanical drying of cane bagasse or trash and other aqueous substances and to apparatus therefor.

rtccording to the new. or improved process the materials to be treated are subjected'to a current of hot air or gas while they are caused to move so that all their parts shall be exposed to the'action of they hot air or gas. lVhile being moved the materials to be dried are carried upon a movable metallic cloth through which passes a current of hot air; the materials never remain in the same place and in all the positions which they may take up they are traversed by the current of hot air.

and on the outside of the cylinder and the function of which is to produce the movement of the material to be dried, the drum and the cylinder being given rotary movements in the same direction. 2) A distributer with blades or 011 any other system for conveying the material into the apparatus. (3) A fan which forces the hot gases into the internal cylinder. t) An exhauster which draws off the cooled gases.

The accompanying drawings illustrate a construction of suitable apparatus: 1

Figure 1 of said drawings is a longitudinal section through the axis. -Fig. 2 is a transverse section corresponding to the line A-A of Fig. 1.

As the drawings show, the apparatus for carrying out the process of dryingcomprises a revoluble drum 1 driven by anysuitable means such as by a rack 2 meshing with a gear 2 driven from a geared shaft 2 more clearly appearing in Fig. 2. Within drum 1 isan eccentrically located revoluble cylinder 2 covered over the whole of its surface with a close-meshed metallic cloth and passing over a sprocket wheel 2*.

The drum 1- is provided internally with a series of longitudinalblades 3the purpose of .which is to. lift up the bagasse or delivers it to the cylinder2'vvhich is itself provided with blades 5 fixed longitudinally abovethe metallic cloth. which covers it.

The bagasse is fed into the drum 1 by a small pusher 7 ,placed underneath which prevents all choking up of the supply hopwhich forces them into an expansion chamgases are preferably drawn ofi .by'an exhauster ,11 placed directly over an evacuation orifice 12 made in the fixed framing 13 into the dust chamber 14.

lows:-The distributer 6 having been so regulated as to allow the total production of the factory during the number of working hours of the mills to pass into the drum 1 of the apparatus, the drum is set in rotation with its internal cylinder 2, the fan and exhauster are also started, the whole being driven by one arrangement of gearing, as shown in Fig. 1. The gases coming from the furnace or the fines ofa chimney are forced by the fan 8 into the rotating cylinder 2 and pass through the metallic which they are then drawn off, when they are cooled down, by the exhauster 11 and delivered into the dust chamber 14:. As

the distributor it falls onto the blades 5 of the cylinder, which carry it along and let- These meet the bagasse and lift it and 'allow it to slide over the inclined plane 4 at the end of which it is again taken up and carried on by the blades 5 of the cylinder 2 to fallback again into the blades 3 of the drum 1 which carries them up again and so on. At the end of some minutes, the bagasse, which advances only very slowly and in Patented A t. 16, 1912.

in the same direction as the outer drumpreferably by means of a sprocket chain2 other material to be dried and distribute 1t over an inclined planed which in turn distributor 6 provided with blades by a" pera The hot gases are led either from a special furnace or from the fine of the steam generators into the cylinder 2 by a fan '8..

her and drives them into thev cylinder 2 through a nozzle 9 connected to the fixed front 10 of the apparatus. The cooled downv of the apparatus which guides :them back:

, The working of the apparatus is as fol--v cloth which covers it into the drum 1 from it fall onto the blades 3 of the drum 1.

soon as the bagasse arrives in the hopper of Y proportion as it dries, becomes much lighter and the cylinder 2 becomes covered on and between its blades 5 with a layer of bagasse which is constantly renewed. This layer of .bagasse is constantly traversed by the hot gasesescaping through the meshes of the metallic cloth which covers the cylinder 2, the gases being unable part without traversing the brwhich tends to block their layer of bagasse passage. When it has reached the end of the cylinder 2 the dried bagasse falls into the lower hopper of the fixed. frame 13 where it is received by a conveyer or screw while the gases now cooled down proceed to expand by the orifice 12 into the dust chamber 14 wherein is trapped the major portion of the light parvare the following :The app'aratus is conticles of the bagasse which arecarried along with the cooled down gases.

Advantages of the improved arrangement tinuously acting and when once regulated it does-not require any special attention; its output is considerable and only depends, when the temperature and flow ofthe hot gases are constant, .on' the speed and the length of the drum and its cylinder. There is no fouling to be feared nor the frequent stoppages which are the consequence thereof.

It is easily worked and does not present any technical difficulty in its operation.

What I claim is 1. In a drier, the combinatlonof a re"- oluble cylinder having imperforate walls,

a perforated cylinder closed at one end and.

eccentrically mounted to revolve within the first-named cylinder, means for feeding mato traverse any inner cylinder and in contact with the said material.

3. In a drier, the combination of a revoluble cylinder having imperforate walls interiorly provided with lifting blades, a revoluble perforated cylinder closed at one end and eccentrically mounted within the first-named cylinder, a stationary plate located in the space between the cylinders adapted to direct the material falling thereon from said blades tothe top surface of the second-named cylinder, means for feeding wet material to said space between the cylinders. and means for forcing air into said annular's'pace through the walls of the inner cylinder and in contact with. said material.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JULES CHARLES FERNAND LAFEUILLE. Witnesses:

, DoUMi: CASOLONGA,

MIGUEL FEROTO. r

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