US1145772A - Feed-cooler. - Google Patents

Description

I. E. JOSEY &

R. C. MILLER.

FEED COOLER.

APPLlCATlON FILED AUG. 14, I914.

Patented July 6, 1915.

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'Attomegs COLUMBIA PLANOGRAPH C0., WASHINGTON, D c.

FEED-COOLER.

Specification of Letters Patent.

Patented July 6, 19115..

Application filed August 14, 1914. Serial No. 856,852.

To all whom it may concern:

Be it known that we, JACKSON E. JosEY and RUDOLPH C. MILLER, citizens of the United States, residing at Beaumont, in the county of Jefferson and State of Texas, have invented certain new and useful Improvements in Feed-Coolers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to driers, and more especially to those having vertical shafts; and the object of the same is to produce a machine for cooling and drying molasses feed, hot grain, or any granular feed substance or material containing heat or moisture or both.

This object is carried out by feeding the material downward through an upright stack or cylinder from which the hot air, steam, and moisture is exhausted at intervals, and providing means throughout the length of said stack for concentrating the material or forcing it inward from the wall of the stack toward the center and retarding its descent, and then agitating or beating it so as to throw it again outward against the wall of the stack. A typical machine for carrying out this idea is illustrated in the accompanying drawings wherein- Figure l is a vertical section of our improved machine, Fig. 2 a horizontal section on the line 22 of Fig. l, and Fig. 3 a plan view of one of the beaters or agitators.

Referring to the drawings by reference numerals, 1 designates an upri ht cylinder or stack of suitable height and dimensions and properly supported by means not necessary to illustrate, and the numeral 2 designates the inlet chute from an elevator or other source, while 3 is the outlet from the lower end of this stack. Throughout the length of the latter extends an upright shaft 4: mounted in a step bearing 5 at its lower end and in asuitable bearing 6 overhead, and rotary motion may be imparted to the shaft by means of a pulley 7 or otherwise. Fast on the shaft at the upper end of the stack and preferably at a point just above the inlet chute 2, is a fan 8 by means of which heat, moisture and steam from the elevator head and from the materialas it enters the cylinder is extracted or drawn; and this fan may be called the primary means for removing the heat, moisture, and

steam-even that portion of it which is drawn over from the elevator-as it is taken from the material while it is passing through the chute 2 and in fact before it really reaches the point within the stack where it is acted on by the mechanism yet to be described.

Without the necessity for going into details, it may be readily conceived that various materials require different treatment before they can be thoroughly dried. We may assume that the material is sticky, moist, cohesive and steaming hot; or We may assume that the mass is lumpy, granular, stringy, or almost or possibly not quite fluid. Numerous and various conditions such as these will obviously require different treatment, and we would not therefore be limited to the height or diameter of the stack, nor to the number of elements yet to be described and of which but four are shown in the drawings. It is essential to the successful operation of our invention, however, that means be provided just beneath the outlet end of thechute 2 for first concentrating the mass or gathering it from the sides of the stack and moving'it inward toward the bore or aXis thereof, and just beneath these means other means for beating, agitating, and dis tributing the mass again, so as to move it from the axis of the stack outward against the wall of the same. Means must also be provided for admitting regulated quantities of cool air to the mass, and extracting the heated air therefrom in such manner that the volume of the mass itself may not be depleted. We prefer to carry out these means in the following manner: Around the stack at a suitable point are formed air-inlet openings 10, and around the stack over said openings is mounted a sleeve 11 adjustable vertically by anysuitable means as by set screws 12 so that it may be set to uncover the openings 10 to their limit or to partly or en tirely close them. Just beneath each series or ring of air-inlet openings 10 as described, the stack carries a hopper 13 whose wall converges inward and downward to a point near the axis of the stack and around the upright shaft 4. Mounted fast on said shaft at a point beneath the outlet end or the mouth 14 of each hopper is an agitator or heater l5 seen in plan view in Fig. 3 and comprising four arms radiating from the hub. At a suitable point in the wall of the stack and beneath the hopper 13 is'an outlet llltl opening 16 of considerable size, from which opening a pipe 17 leads to a suction device such as a'fan indicated at 19. This group of elements is repeated throughout the length of the stack, and in the illustration herewith four such groups are shown although as above described a greater or lesser number may be employed according to the requirements of the case and the nature of the material being treated.

In action the material is fed into the chute 2 and falls through its outlet end into theupper end of the stack, and in the act of falling the initial fan or suction device 8 withdraws the heat, moisture, and steam which may have been brought over from the elevator. Falling into' the uppermost hopper 13, the material is checked in its descent throughout the stack and is concentrated or caused to move downward and inward into and through the mouth 14 of this hopper, whence it falls directly onto the beater or spreader '15 and by means of the latter it is again tossed outward against the wall of the stack and disintegrated. Meanwhile I cool air has been admitted through the inlet openings 10, regulated in size by setting the sleeve 11, and hot air or steam is withdrawn through the outlet 16 and pipe 17 at a point close up under the hopper 13 and yet above the point where the beater or agitator 15 would cause the material to again strike the wall of the stack. Inorder that the material falling through this course may not clog the air inletslO, short hoppers or baflle rings 18 are secured within the wall of the stack just above the air-inlet openings 10, and these also by preference incline downward in substantial parallelism with the walls of the hoppers 13 as shown.

It will be found that various moist and heavy materials while in a hot condition can be fed into and treated within a stack of this character, and will be delivered out its outlet 3 in a dried condition with practically all if not actually all the moisture and heat removed therefrom. It may be that different materials will require adjustment of the air inlets, or substitution of other forms of agitators or heaters 15; although this matter may be left to the foreman in charge, bearing in mind that in the initial installation of the machine, consideration will be had of the material which it was intended to treat. e would not, therefore, be limited to the proportions and materials of parts, and reserve the right to make such changes as come within the spiritof this invention.

What is claimed as new is K 1. The herein described drier comprising an'upright stack with means for feeding material to its upper end and taking material from its lower end, and within said stack a series of instrumentalities whereof each includes means for retarding the dcscent of the material and concentrating it near the axis thereof, and other means immediately beneath for agitating and beating the material and tossing it radially outward, means for admitting cool air above and eX- tracting hot air beneath each of said concentrating means, and a primary heat-exhausting element at the upper end of the stack.

The herein described drier comprising an upright stack with means for feeding material to its upper end and taking material from its lower end, and within said stack a series of instrumentalities whereof each in cludes means for retarding the descent of the material and concentrating it near the axis thereof, other means immediately beneath for agitating and beating the material and tossing it outward, the stack having a series of inlet openings above each of said concentrating means, a sleeve adjustable to regulate the size of these openings,the stack also having hot-air outlet openings immediately beneath said concentrating means and above said heaters, and bafile rings within the stack just above said inlet openings.

3. The herein described drier comprising an upright stack with means for feeding material to its upper end and taking material from its lower end, and within said stack a series of instrumentalities whereof each includes means for retarding the descentof the material and moving it from the wall of the stack toward the axis thereof, other means immediately beneath for agitating and beating the material and tossing it outward against said wall, the stack having a series of inlet openings above each of said concentrating devices. a sleeve loosely surrounding the stack and adjustable vertically to regulate the size of these openings, hot-air outlet openings immediately beneath said concentrating means and above said heaters, and means for initially withdrawing steam from the upper end of the stack.

4. The herein described drier comprising an upright stack having means for feeding material into its upper end and taking material from its lower end, an upright shaft extending along the axis of said stack, a series of beaters fast on said shaft at intervals, a series of hoppers carried by the wall of the stack and with their walls converging from said hopper-wall downward to their months which latter stand just above said boaters, the wall of the stack having a series of cold-air inlet-openings just above said hoppers, baffle rings above these openings, hot-air outlet-openings beneath said hoppers, and means for applying suction to the last-named openings.

5. The herein described drier comprising an upright stack having means for feeding material into its upper end and taking material from its lower end, an upright shaft extending along the axis of said stack, a se ries of beaters fast on said shaft at intervals, a series of hoppers carried by the wall of the stack and with their Walls converging from said hopper-wall downward to their months which latter stand just above said heaters, the wall of the stack having above each hopper a ring of co1d-air inletopenings, means to regulate the size of the same, and a hot-air exhaust-fan mounted on the upper end of said shaft, for the purpose set forth.

In testimony we afiix our signatures in presence of two witnesses.

JACKSON E. JOSEY. RUDOLPH C. MILLER. Witnesses: I

W. M. 011001;, G. M. CHIsoLM.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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