US752882A - Centrifugal grain-drier - Google Patents

Description

No. 752,882. PATBNTBD FEB. s, 1904 M. L. BARBBAU, CENTRHUGAL GRAIN DRIBR.

APPLICATIONFILED JULY 17, 1901.

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Iatented February 23, 1904.

UNITED STATES PATENT OFFICE.

MALCOLM L. IBARBEAU, OF SILVERCREEK, YORK, ASSIGNORTO THE S. HOVVES COMPANY, OF SILVERCREEK, NEW YORK.

CENTRIFUGAL GRAIN-DRIER.

SPECIFICATION forming part' of Letters Patent No. 752,882, dated February 23,1904.

Application led July 17, 1901.

To all whom it may concern,.-

Be it known that I, MALCOLM L. BARBEAU, a subject of the King of Great Britain, residing at Silvercreelr, in the county of Chautauqua, in the State of New York, have invented new and useful Improvements in Centrifugal Grain-Driers, of which the following is a specification.

My invention relates to that class of centrifugal drying-machines which are employed for drying,.as far as practicable, wetl grain and other granular materials and which embody a rapidly-rotating perforated shell or cylinder in which the material is subjected to centrifugal force for driving the water or other liquid through the perforations and a conveying mechanism for moving the material from the feed end of the cylinder or shell to the discharge end thereof, so that the operation is carried on continuously.

The object of the invention is to produce a machine of this general character which is provided with an exceedingly simple, durable, and eflicient device for conveying the material through the cylinder or shell.

In the accompanying drawings, consisting of two sheets, Figure l is a longitudinal sectional elevation through a centrifugal dryingmachine embodying my invention. Fig. 2 is a horizontal sectional view, partly in plan, of said machine. Fig. 3 is a transverse vertical sectional view on the line 3 3, Fig. l. Fig. 4 is a vertical sectional view through the rotating shell, illustrating a slightly-different conveyer. Fig. 5 is a top plan view of this conveyer.

Like letters of reference refer to like parts in the several figures.

Referring to Figs. 1 to 3, A indicates the rotary perforated shell or cylinder; B, the feedreceptacle at one end of the same; O, the feedspout, and D the feeding-wing or other-device for delivering the material to be treated from the feed-receptacle into the shell or cylinder. The latter is shown in the drawings to be arranged horizontally and is journaled to rotate on a horizontal axis in any suitable manner. In the construction illustrated the cylinder is Serial No. 68,604. (No model.)

suitable means, such as collars e, between which the hubs f and g' are confined. The shaft E is shown'to project at the ends beyond .the spider F and head G and is secured at its ends in suitable bearings t, carried by a frame H, which may be of any desired construction.

Any suitable means may be provided for rotating the shell or cylinder, such as a pulley I, secured to the outer end of the hollow shaft g. J indicates a series of. short inclined blades or Wings supported within the shell or cylinder, as by means of a longitudinal head or bar J connecting the blades, and secured by radial arms J2 to the stationary shaft E. rlhe blades or Wings J are arranged one behind the other from the head to the tail end of the cylinder and constitute a conveyer extending practically from one end to the other of the cylinder or shell. The blades are so inclined as to propel the material with the desired speed and overlap more or less, so that no may terial carried around by the cylinder can pass between the blades without coming in contact with one of the blades. The latter. extend into close proximity of the peripheral wall of the cylinder and preferably have their outer edges curved, as indicated at j, to correspond with the curvature of the inner surface of the cylinder.

The material carried into the shell or cylinder is caused by centrifugal force to cling to the inner surface of the perforated wall. In the rotation of the shell the material is brought into contact with the blades or wings J, which scrape the material from the cylinder and owing to their inclination push or move it onward toward the discharge end thereof, in which pushing or moving the material is rolled or agitated more or less, thus subjecting all portions of it thoroughly to the centrifugalv l action during its travel through the machine. The blades being comparatively short and sta tionary act only intermittently on any particular portion of the material as it is brought against the blades once in each rotation of the shell or cylinder, the material retaining the position on the shell until brought into contact with a blade, which moves it forward into a position to be similarly acted upon by the next blade in the next rotation of the shell, and so on until the material has been pushed forward by each successive blade and finally discharged from the shell. The rapidity of movement of the material is determined by the length and inclination of the blades, and these may be changed to suit the conditions of a particular class of work or material.

K indicates an inclosing casing for the cylinder of any desired or usual form. It is shown as provided with a vertical partition dividing the casing into two compartments L and L the former of which catches the expelled liquid and directs the same to a suitable discharge l and the latter of which receives the material from the discharge end of the shell or cylinder and directs it to a suitable discharge Z.

m indicates a hand-hole for the purpose of cleaning the bottom of the casing should the same become choked.

A. single spiral or inclined blade N may be employed, as shown in Figs. 4 and 5, instead of a plurality of blades; but a single blade is desirable only in special cases in which a more rapid movement of the material through the cylinder and less agitation of the material suffices for effecting the desired drying operation. rlhe blade N is supported from the stationary shaft E by arms n or other suitable means.

I claim as my invention# l. The combination of a stationary shaft supported at opposite ends, a perforated rotary shell provided at opposite ends with bearings by which said shell is journaled and supported on said shaft between the supports thereof, and a stationary conveyer secured to said shaft within said shell and acting to move the material lengthwise through the shell, substantially as set forth.

Q. The combination of a rotary perforated shell, a stationary shaft extending through the same, and on which said shell is supported and rotates, radial arms secured to said shaft, a longitudinal bar or head connected at opposite ends to said arms, and inclined conveyerblades carried by said longitudinal bar, substantially as set forth.

3. The. combination of a stationary shaft supported at its Yopposite ends, a perforated shell surrounding said shaft and provided at one end with a bearing j ournaled on said shaft, a head secured to the opposite end of said shell and provided with an outwardly-extending hub journaled on said shaft, a drive-wheel secured to said hub, a stationary feed-receptacle surrounding said hub, a feed device secured to said hub and Working in said feed-receptacle, and a stationary conveyer secured to said shaft in said shell adjacent to the inner surface thereof and acting to move the material lfongiltudinally of the shell, substantially as set ort Witness my hand this 12th day of July,

MALCOLM L. BARBEAU.

Witnesses:

WILL K. MILLER, A. D. RoDGERs.

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