US926357A - Stock-distributer for blast-furnaces. - Google Patents

Description

J. ROE.

STOCK DISTRIBUTEB FOR BLAST FURNACES.

Patented June 29, 1909.

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J. M. ROE.

STOCK DISTRIBUTER FOR BLAST FURNACES. 7

APPLICATION FILED JAN. '23, 1909.

Patented June 29, 1909.

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STOCK DISTRIBUTER FOR BLAST FURNACES.

.*\PPLI0A'1ION FILED JAN. 23, 1909.

Patented June 29, 1909.

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J. M. ROE.

STOCK DISTRIBUTER FOR BLAST FURNACES. APPLICATION FILED JAN. 23, 1909.

926,357. Patented June 29, 1909.

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UNITED STATES PATEN T OFFICE.

JAMES M. ROE, OF TOLEDO, OHIO, ASIGNOR OF ONE-HALF TO THOMAS F. OOOKE, OF BUFFALO, NEW YORK.

STOCK-DISTRIBUTER FOR BLAST-FURNACES.

T 0 all whom it may concern:

Be it known that I, JAMES M. Ron, a citizen of the United States, residing at Toledo, Ohio, formerly of Vest Seneca, in the county of Erie and State of New York, have invented a new and useful Improvement in Stock-Distributors for Blast-Furnaces, of which the following is a specification.

In the absence of a distributing device the stock which is dumped from one or more skip cars into the hopper of a blast furnace will divide unequally, the coarse part of the stock being deposited on one side of the furnace and the fine stock being deposited on the opposite side of the same. This is objectionable because the air passes more freely upward through that side of the furnace containing the coarse stock than it does through the side of the furnace containing fine stock which unequal draft causes an uneven burning out of the furnace and necessitates more frequent repairs of the same.

Various devices have heretofore been employed for effecting a more uniform distribution of the stock in the furnace as it is dumped into the same but these devices have been of an elaborate character involving not only considerable cost in their manufacture and installation but also requiring considerable power for operation and undue expense for keeping them in order.

It is the object of this invention to provide a stock distributing device for blast furnaces which is exceedingly simple and inexpensive in construction, which will effect a practically uniform distribution of the fine and coarse stock in the furnace and which does not require any power for its operation and but little expense for its maintenance.

In the accompanying drawings consisting of 4 sheets: Figure 1 is a fragmentary vertical section of a blast furnace provided with a stock distributer embodying one form of my invention. Fig. 2 is a similar view taken at right angles to Fig. 1. Fig. 3 is a frag mentary sectional top plan view of the distributer and adjacent parts. Fig. 4; is a perspective view of one section of the distributing device. Fig. 5 is a sectional top plan view of a modified construction of the stock distributer applied to a furnace. Fig. 6 is a fragmentary sectional elevation of the same.

Similar letters of reference indicate corresponding parts throughout the several views.

Specification of Letters Patent.

Application filed January 23, 1909.

Patented June 29, 1909.

Serial No. 473,917.

The furnace and the means for dumping the stock into the upper end of the same may be of any suitable and well known construc tion and forms no part of my invention. Those parts of the furnace and the feeding device shown in the Figs. l3 of the drawings consist essentially of a hollow furnace body or shaft A which receives the charge of stock composed usually of coke, ore and lime stone, a lower hopper B arranged to discharge into the upper end of the furnace body, an upper hopper O arranged to deliver into the lower hopper, a large bell or shutter l) controlling the outlet of the lower hopper and operated by a vertical rod cl arranged centrally within the hoppers and connected at its lower end with the large bell while its upper end if connected with a rock lever (P, a small bell or shutter E controlling the outlet of the upper hopper and operated by means of a vertical tube a surrounding the rod D and connected at its lower end with the small bell E while its upper end is connected with a rock lever 0 two inclined tracks F, F extending upwardly from the stock supply to the upper hopper on opposite sidcs of its center, and two skip or supply cars G, G adapted to be raised and lowered alternately on said tracks and to dump charges of stock alternately into the upper hopper on opposite sides of its center.

My improved distributing device, shown in Figs. 1l, consists of two like sections which are arranged within the upper hopper on opposite sides of the bell shifting rod (Z and tube a in the center of the same. Each of these sections is adapted to receive the stock from one of the skip cars and distribute the same into two different quarters of the body of the blast furnace. As shown in the drawings, each of these distributer sections comprises an inner inclined guide, coiuluctor or deflector which is arranged in line with the inner half of the respective skip car adjacent to the central part of the upper hopper and which trends in the same direction in which the stream of stock flows from the car, and an outer inclined guide, conductor or deflector which is arranged in line with the outer part of the respective skip car adjacent to the outer part of the hopper and which trends laterally in a direction at right angles to the inner guide H. It represents an upright outer wall ar ranged in line with the center of the discharging position of the respective skip car and extending upwardly from the outer 1nclined edge of the inner guide or bottom to a chute and the outer inclined guide togetherwith the adjacent walls of the upper hopper form an outer chute. The lower edge 2' of the inclined inner guide preferably terminates at an oblique angle and the inner wall of the chute is shorter in a horizontal direction than the outer wall thereof. The inclined outer guide J extends from the upper edge of the outer wall of the chute downwardly and outwardly toward the adjacent side of the upper hopper but terminates short of the same so as to leave a throat 7' between the lower edge of the outer guide and the adjacent side of the upper hopper, as shown in Figs. 2 and 3. Upon dumping the contents of a skip car upon a distributer section of this construction the same is divided at the junction between the upper ends of the outer guide J and the outer wall it of the chute, one half being controlled by the inner guide so that it continues to move or flow in the same plane in which it leaves the skip car while the other part is conducted by the outer guide J laterally outward in a direction at right angles to that in which it moves upon leaving the skip car. The stock upon leaving the lower end of the inner guide H of the chute is delivered into one quarter of the furnace while the stock leaving the lower edge of the outer guide J is delivered into another quarter of the furnace. The two sections of the deflector, as shown in the drawings, are arranged reversely to each other, so that the stock de livered upon one of the sections is distributed into two quarters of the furnace while the stock delivered upon the other distributer section is delivered into the other two quarters of the furnace. These distributer sections may be supported within the upper hopper by means of rods 76, Z, we secured respectively to the inner walls [L1, outer walls It and outer guides J, or any other suitable means as is best suited to the particular construction of the furnace in which the same is installed. Inasmuch as the contents of each skip car is divided by this distributer into practically equal parts each of which contains the same proportion of coarse and fine stock, it follows that a like amount of fine and coarse stock is distributed over the entire area of the furnace, thereby insuring a uniform draft through the stock and avoiding irregular wear on the walls of the furnace body.

The distributer may be made of iron or steel plates or other material and its inclined guides are preferably provided with wearing plates 7? of iron or steel or any other suitable material which may be detachably secured thereto by bolts 77, or otherwise, so that they may be changed as often as required or when worn out.

It has been found in practice that in the absence of any provision to prevent it, some of the stock is apt to lodge in the corner between each outer wall It and the adjacent part of the upper hopper C, and particularly in the respective corner of the section the inclined inner guide of which leads away from the place of discharge of its companion skip car. To prevent such lodging of the stock in these corners and insure uniformity in the distribution of the stock, each of said corners is covered by a guard 0 having preferably the form of a downwardly-inclined plate which is secured to the outer wall It of the respective distributer section, as shown in Figs. 1-1.

Instead of supplying the furnace by means of two skip .cars and dividing the contents of each car into two parts, as shown in Figs. 13, the furnace may be supplied with stock by a single skip car G and the contents of the same divided equally into a plurality of parts. A stock distributer con structed in accordance with this modification of my invention is shown in Figs. 5 and 6, and consists of two like sections which are constructed substantially like the sections in F l t but are arranged with their inner walls 7L1 close together and in line with the center of the upper furnace hopper and the stream of stock as it flows from the single skip car G upon the two distributer sections. In order to permit of thus placing the inner walls of the distributer sections in the center of the upper hopper, these walls are provided with outwardly-defiected portions or seats 79 which receive opposite sides of the hollow shifting tube 6 which operates the upper bell, as shown in Fig. 5. In a distributer designed for use with but one skip car, the meeting edges of the outer wall it and outer guide J of each section is arranged midway between the center of the skip car and the adjacent longitudinal side wall of the same, as shown in Figs. 5 and 6, whereby the contents of the car upon being dumped above the hopper is divided by the distributer sections into four equal parts which are directed into four different quarters of the upper hopper.

Inasmuch as this distributer contains no complicated parts, the cost of the same is very low and as the same is fixed in the hopper and contains no moving parts no power is necessary for its operation, thereby effecting a considerable saving in expense which has been heretofore necessary for this purpose.

While the foregoing description and the drawings represent the best embodiment of my invention which has occurred to me so far, it is understood that the invention is not limited to the specific construction here shown but comprehends any structure containing the essence of my invention.

I claim as my invention:

1. The combination with the feed hopper and the skip car for supplying stock, of a stock distributer having a section which receives the stock from said car and distributes the same to different parts of the furnace and which comprises an inclined guide extending in one direction, an outer wall extending upwardly from the outer edge of said guide, an inner wall extending upwardly from the inner edge of said guide, and another inclined guide extending downwardly in another direction from the upper edge of said outer wall.

2. The combination with the feed hopper and the skip car for supplying stock, of a stock distributer having a section which receives the stock from said car and distributes the same to different parts of the furnace and which comprises an inclined guide ex tending in one direction and having an oblique lower edge, an outer wall extending upwardly from the outer edge of said guide, an inner wall extending upwardly from the inner edge of said guide, and another inclined guide extending downwardly in another direction from the upper edge of said outer wall.

3. The combination with the feed hopper and the skip car for supplying stock, of a stock distributer having a section which receives the stock from said car and distributes the same to different parts of the furnace and which comprises an inclined guide extending in one direction, an outer wall extending upwardly from the outer edge of said guide, an inner wall extending upwardly from the inner edge of said guide, another inclined guide extending downwardly in another direction from the upper edge of said outer wall, and a guard arranged in the corner between said outer wall and the hopper adjacent to the lower end of said first mentioned guide.

4. The combination with the feed hopper and two skip cars adapted to dump stock above said hopper on opposite sides of its center, of a stock distributer comprising two sections arranged in said hopper on opposite sides of its center and each having an inner inclined guide which trends in the same direction as the stream of stock flowing from the respective car and an outer inclined guide which trends in a direction late 'ally from said stream, the inner guides of both sections being inclined in opposite directions.

fitness my hand this 29th day of Decenr ber, 1908.

JAMES M. ROE.

Vitnesses JULIUS P. SIMoN, ANDY KAmL.

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