US1244007A - Drier. - Google Patents

Description

C. A. WENDELL.

DRIER.

APPLICATION FILED mm: 12. 1915.

Patented Oct. 23, 1917.

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DRIER.

APPLHIATION FILED JUNE I2. 1915. 1,244,007. Patented Oct 23,1917.

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UNITED CAItL .A. WEN'DELL, OF JOLIE'I, ILLINOIS.

DRIER.

Application filed June 12, 1915. Serial No. 33,791.

To all whom it may concern: it

- Be it known that I, CARL A. WENDELL, a citizen of the United States, residing at Joilet, in the county of Will and State of Illinois, have invented a certain new and useful Improvement in Driers, of which the following is'a spec cation.. 7

My invention relates to a process for drying granular or lump material, such for example, as coal. It consists broadly in rotatin a mass of such material arranged in the s ape of a ring so that the moisture or water will be expelled therefrom by cen-' trifugal force, and at the same time discharging successive dried sections of said of materialby centrifugal force and rm feeding successive sections of moist material.

to the parts of the ring so left vacant by the expulsion of the dried section. There are many apparatuses and devices whereby the process can be carried out, but in one form of apparatus the ring of material is formed u on an annular perforated'screen through w ich the water is expelled, while wet material is furnished to the" ring by a spout, the spout and ring rotating in the same direction at diflferent speeds. By successively discharging a dry and immediately thereafter supplying from the spout a like section of wet material, the ring iskept practically intact and becomes in efiect. a constantly moving mass of material at various stages of dryness, rotating across the path along which the wet material is fed to the inside of the ring and the dry material discharged from the outside thereof. Such an arrangement must have means whereby the water is carried oil in one direction and the dried material is discharged in another direction.

For the purpose .of illustrating myinven tion, Ihave employed a diagrammatic draw 'gure l is a diagrammatic plan view,

and

Fig. 2 adiagrammatic cross section of an apparatus by which my process could be carried out.

ELike parts are indicated by similar letters in all the figures. I r A is a hopper from the lower part of which leads a spout B.

C is a ring-o inclined annular screen D.

The ring and the spout are rotatedin the Specification of Letters Patent.

-' a pair spout are section from the ring' .force outwardly,

coal banked upagainst an y dumplng takes place before or n advance "of the discharge of materialto Patented Oct. 23, 191W.

same direction as indicated arrow in Fig. 1, but difierentia a little faster than the ring.

E is'a pair f small arrows indicating the flow of coal or material through the spout outwardly toward the ring, and E of similar arrows indicating the flow of such material" from the end of the s'out the spout toward the ring. It is obvious that i the supply be continuous, and the ring and thus rotated, the spout faster than the ring, but both continuously in the same direction, the tendency will be to supply a small continuous-flow of material to the ring. The ring and spout should rotate rapidly so it may pass on into the channel F. E indicates a pair of arrows showing the direction of movement of the ring-shaped mass of coal. a p

G is a trap door below, the screen I), and there should be one of these for each of a predetermined number "of sections of the floor which holds the #ring of material. Means are provided wherebythese traps are successively opened to allow'a dried sec: tion of the ring of material just in advance of the point where the spout is delivering to the ring, to be discharged by centrifugal and then downwardly into the receiving hopper, H, as indicated-by the pairs of small arrows E E I have not, of course, a mechanism, but have simply contented 'myself with suggesting diagrammatically- 7 one form of structure which might be use but there are many others. Broadly speaking, the process consists in feeding the coal in a. flowing stream to successive suctions of a ring of mater al, WlilCll ring of material b the large t.

that the water may be expelled from the coal or material in the screen, and

endeavored toshow' discharge of water andcoal rom the rim being substantially continuous,

dumping means must be provided to dump of its movement with respect to the ring of material In either event, however, the

be dumped and efiecte I by-centrifugal force. If the spout is moved slower than the ring of material then the or empty portion of the ring, that is to say, thering is first cleared of material at a. certain point and then subsequently wet material is added to that point. In the claims I have described the discharged section as being in advance of the fed section, that is to say, the discharged section is always dumped before the feeding spout reaches the position from ,which it discharges wet material to the previously emptied zone.

In the particular mechanism diagrammatical y illustrated and proposed as a means of working my process, I may further explain that the trap doors G serve to arrest or prevent the'discharge of the several'sections of the annulose or annular mass of material and that they are successively operated each to release a given section and v through a hole F in the floor of the hopper,-

permit centrifugal force to discharge it when said section shall have been sufliciently dried. There is no effective operation of these doors when the machine is at rest, but

when the basket is in motion the spout travels differentially with reference to the basket and is associated with a door trip ping mechanism, so that each section when filled will travel a considerable period before the differential action will cause the arm to open the door and permit the dried material to escape, but there is during-action at all times a steady discharge of successive sections of the material as it IS dried, and

a steady filling of such successive sections the moment they are discharged.

In Figs. 3 and 4-the gate opening means are shown in detail. It will be observed that the spout B carries an arm F. This arm carries a cam F which is in opposition to the arm F This arm passes upwardly and supports. at its bottom a weight F This weight is on one end of a bell crank leverF pivoted at' the bottom of the hopper or drying chamber, and carrying or supporting the pivotally mounted trap door G. It will be clear that as the chute and the drying chamber vrotate differentially, the

cam on the arm ,will lift successively the weights holding the pivoted trap door shut, thus permitting material to successively pass out from beneath the screen through the successively opened trap doors.

I claim: f

1. The process of drying granular or lumpy, material, which consists in feeding the same by a flowing stream to successive sections of an annular mass of the material,

rotating such annular mass to expel thewater therefrom by centrifugal force, and r'lischarging by centrifugal force successive sections 'of the dried material in an outwardly flowing stream the discharged section being just in advance of the section which is being fed.

cessive sections of the dried material in an outwardly flowing stream, the discharged section, being just in advance of the section which is being fed.

3. The process of drying granular or lumpy material, which consists in feeding the same by a flowing stream to successive sections of an annular mass of the material, rotating such annular mass through a large number of comple e revolutions to expel the water therefrom by centrifugal force, and

discharging by centrifugal force successive sections of the dried material in an outwardly flowing stream. v

4:. The continuous process of drying granular or lumpy material, which consists in, feeding the same by a continuously flowing stream to successive sections of an annular mass of the material, rotating such annular mass through a large number of complete revolutions continuously to expel the water therefrom by centrifugal force, andcontinuously discharging by centrifugal force successive sections of the dried material in an outwardly flowing stream.

5. The process of drying granular or lumpy material, which consists in feeding the same by a flowing stream to successive sections of an annular mass of the material, holding in opposition against centrifugal force and rotating such annular mass toexpel the water therefrom by centrifugalforce, and discharging by centrifugal force .successive sections of the dried material in an outwardly flowing stream, the discharged section being constantly replaced by the section which is being fed.

6. The continuous process of drying gram ular or lumpy material which consists in feeding the same by a continuously flowing stream to successive sections of an annular mass of the material, holding in position against centrifugal force and rotating such annular mass continuously to expel the water therefrom by centrifugal force, and continuously discharging by centri i ugal force successive sections of the dried material in an outwardly flowing stream, the discharged section being constantly replaced by the section which is being fed.

7. The process of drying granular or lumpymaterial, which consists in feeding the same by a flowing stream to successive sections of an annular mass of the material holding in position against centrifugal force and rotating such annular massthrough a large number of complete revolutions to ex pel the water therefrom by centrifugal force;

and discharging by centrifugal force sue-- cessive sections of the dried material in an outwardly flowing stream.

8. The continuous process of drying granular 0r lumpymaterial which conslsts in feeding the same by a continuously flowing stream to successive sections of an annular mass of the material, holding in position against centrifugal force and rotutingesuch annular mass t rough a large num r of complete revolutions continuously to expel Copies of this patent my be obtained for five cents each, by addressing the in the presence of two witnesses this 24th day of May, 1915.

' CARLA. WENDELL.

Witnesses:v

MINNIE M. LINnENAU, Bnssm S. RICE.

Commissioner of Patents,

Washington, D. 0.

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