US770111A - Apparatus for charging blast-furnaces. - Google Patents

Description

No. 770,111. PATBNTBD SEPT. 13, 1904.

- W. R. RBEGE.

- APPARATUS FOR GHARGING BLAST FURNAGES.

yAPPLIoATIoN FILED 111:0. 20, 1003.

N0 MODEL. l l zsHBnTsMsHnn'r 1.

1 Wgf f Hl m'fj j 6 if, 6.," o i, 7\

7E '1 /l y ""1 l' Il 1 7 0011 .alll l Y wl'lrNEssEs: i INVENTOR,

'PATENTED SEPT. 13, i904.

l W. P. RPPGP. APPARATUS P0P CHARGING BLAST PUPNAGES.

APPLICATION FILED DEO. 26. 1903.

. 2 SHEETS--SHBBT 2.

N0 MODEL.

.E um 1 HNVENTOR, WMZQW WITNESSES:

UNITED STATES Patented September 13, 1904.

PATENT CEEICE.

WALTER R. REECE, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TC CLARENCE vW. CCFFMAN, OF PITTSBURG, PENNSYL- l VANIA.

APPARATUS FOR CHARGING BLAST-FURNAQES.

SPECIFICATION forming part of Letters Patent N o. 770,111, dated September 13, 1904.

Application filed December 26, 1903. Serial No. 186,719. (No model.)

T all whom t may concern:

Be it known that I, VVALTEE R. REECE, of Pittsburg, in the county of 'Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus for Charging Blast-Furnaces; and I 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 I0 it appertains to make and use the same.

The primary object of this invention is to provide an improved charging device which will insure an even distribution of the charg'e within a blast-furnace.

A further object is to so construct a charging device of this character as to form a seal against the escape of gas during the introduction of a charge.

The invention will be hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical sectional view showing the charging end of a blast-furnace with my improvements. Fig. 2 is a cross-section on line 2 2, Fig. 1. Fig. 3 is a horizontal sectional view through the casing, with the charging-valves in plan view.

Referring to the drawings, 1 designates the upper. portion of a blast-furnace having a charging-casing 2, the lower end whereof is normally closed by a bell 3, having an upwardly-extended controlling-rod 4. In an upper extension 5 of this casing are the charging-wheel valves 6, mounted on axles 7, extended through the parallel walls of the casing extension and suitably supported, said axles having two worm-wheels S, meshing with a worm-shaft 9, driven by a chain and 40 sprocket-wheel 10. Each of these wheelvalves is diametrically divided by blades 12 into four separate pockets, and the two valves being correspondingly mounted, so as to work in unison, two opposite pockets will be coincident to receive the charge between them, the horizontally-disposed blades of the two pockets forming the bottom support of the charge, while the two opposite vertically-disposed blades, together with the circular sides of the valves and the curved walls of the casing extension, coniine the charge within such pockets. The wheel-valves form a practically gas-tight fit against the walls of the casing extension and likewise at the meeting-points of their peripheries. The several blades are formed with central cut-outs to form when coincident `openings 13 to accommodate rod 4.

Immediately above the charging-valves to one side is a hopper 14, into which the skipcar (indicated in dotted lines, Fig. 2) discharges its load. The inner end of this hopper is normally closed by a flap-valve 15, pivotally hung, so as to occupy a vertical position against the inner end of the hopperthat is, in vertical line with one of the side walls of the casing extension. This valve forms an additional guard against. the escape of gas when the bell is unseated for the introduction of the charge to the furnace. The top 17 of the casing extension is carried obliquely across and above the valves in parallelism to the bottom of the hopper and is formed with an opening for the passage of the bell-actuating rod 4.

In practice the two wheel-valves, being always on quarter-turn, will, save when being moved to empty a charge into the chargingcasing, present two opposite pockets to receive the charge from the hopper, such charge forcing the flap-valve 15 to one side. The bell 3 being seated, the wheel-valves are given a quarter-turn, so as to discharge the contents of the two pockets directly against the apex of the bell, and thus insure an even distribution of the charge at every point, first around the bell and later within the furnace when the bell has been unseated. When this latter occurs, the gas and portions of the charge are prevented from escaping by the seal presented by the wheel-valves and the flap-valves. As one set of pockets is being moved to discharge'its contents another set is approaching position to receive a fresh charge from another skip-car emptying into the hopper. `It will be noted that by my invention the charge begins to fall from the pockets the moment the wheel -valves are moved sufficiently to separate the opposite horizontal blades, which being at the center and directly over the apex of the bell insure an even distribution, the advantage thereof being gained within the furnace when the bell is ,unseated It is obvious that changes may be made in the construction and arrangement of parts without departing from the spirit of my invention.

I claim as my inventionl. A blast-furnace-charging apparatus comprising a casing having curved walls and two axially-mounted valves movable toward each other, each valve fitting against said curved walls and having a plurality of pockets, opposite coinciding portions of the two valves forming the bottoms of coinciding pockets.

2. A blast-furnace-charging apparatus comprising a casing having curved walls and two axially-mounted valves movable toward each other, each valve fitting against the said curved walls and having a plurality of, pockets, opposite coinciding portions of the two valves forming the bottoms of coinciding pockets, a bell beneath said valves, and an actuating-rod therefor, said valves being' designed to discharge against the apex of said bell.

3. A blast-furnace-charging apparatus comprising a casing having an upper extension formed with curved walls, a bell for normally closing the lower end of such casing,and two conjointly-operating axially-mounted charging devices in said extension fitting against said curved walls and movable toward each other for discharging against the apex of said bell, said devices having opposite corresponding portions forming the bottoms of coinciding pockets.

4. A blast-furnace-charging apparatus comprising a casing having' an upper extension formed with curved walls, a bell for normally closing the lower end of such casing, rotary wheel-valves mounted within said extension and fitting against said curved walls, each of said valves being divided into pockets, opposite portions of the two valves forming the bottoms of coinciding pockets, and means for turning such valves.

5. A blast-furnace-charging apparatus comprising a casing having an upper extension, a bell for normally closing the lower end of such casing. rotary wheel valves mounted within said extension, the peripheries of the two valves being designed to contact above the apex of the bell, each of said valves having a series of dividing-blades forming separate pockets, said blades having central cutouts, and the bell-actuating rod passed between said valves, as set forth.

6. The combination with the charging-casing, and the bell-at the lower end thereof, of the hopper, a flap-valve over the inner end thereof, and two rotary valves having pockets, opposite portions of the two valves forming the sides and bottoms of coinciding pockets, said sides being designed to coincide with said hopper, as set forth.

7. The combination with the charging-casing and the bell, of the hopper, the flap-valve over the inner end thereof, the two wheelvalves having diametrically-arranged blades, opposite blades of the two valves forming the bottoms of pockets formed by the two valves, worm-wheels on the axles of said wheel-valves, and a worm-shaft in mesh with said wormwheels, as set forth.

1n testimony whereof I have signed this specification in the presence of two subscribing witnesses.

WALTER R. REECE. Witnesses:

C. W. CoFFuAN, J. A. JOHNSON.

Images