US938572A - Mechanical charging apparatus for blast-furnaces. - Google Patents

Description

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L. GEUZE. MECHANICAL GHARGING APPARATUS FOR BLAST FURNAGES.

APPLIOATION FILED JULY 10, 1905.

LoN causa, or rerun-sr. menstruation.

MECHANICAL CHARGING APPARATUS FOR BLAST-FURNACES.

essere.

- Specification of Letters Patent.

Patented. Nov. 2, i909.

Application ied July 1G, 1965. Serial o. 269,078.

To all 'whom it may concern:

Be it known that I, LoN GEUZE, a citizen of the French Republic, and residentof Trith St. Lger, Nord, France, have invented certain new and useful Improvements in Mechanical Charging Apparatuses for Blast- Furnaces, of which the following is a specication.

This invention relates to an improved construction of mechanical charging apparatus for blast furnaces. y

It has mainly for its object to reduce the height of fall to which the materials consti# tuting the charges of blast furnaces aresubjected in mechanicallycharging apparatus of present construction, and 'whereby inparticular the coke' is subjected to considerable losses and deterioration by fracture and conversion into dust.

Accordingto my improved apparatus the fall at the foot of the furnaceI is entirely done 1away with as the trucks containing the materials are not discharged into the receptacles by which they are raised to the top of the furnace, but the trucks are brought `bodily on to a hoisting carriage which is tipped with the truck when it arrives at the furnace `mouth.` Furthermore, by eifecting astep by step rotation of a hopper situated in the furnace mouth while successive trucks are discharvfed into it, a more uniform distribution of the charges in the furnace is insured.

will proceed to describe the construction of my improved apparatusfwith reference to the accompanying drawings, in which# Y Figure 1 is a vertical section of the upper portion' of a blast furnace embodying my invention. Fig. 2 is a plan view. Fi .'3 1s an elevation of the hoistin carriage., 4 is a plan View of Fig. 3. i 5 is a detai View hereinafter referred to. gig. 6 is a. sectional elevation showing a means for raising and lowering the cone. Figs. 7 and 8 are detail views hereinafter referred to, both views being partly in elevation and partly in section. n the drawings, a indicates an inclined support upon which are arranged two lines of rails of different gages on which ascends and descends the hoisting carria e b.

The internal line of rails is ent at the ulpper end so as to assume a horizontal or s lght-ly inclined position.v Into the carria e o 1s introduced the truck o containing t e ore, fluxes, etc., to be charged.` This truck is supported by the carriage b to which it is temporarily attached by any suitable means so as to prevent all displacement during the ascending and descendlng movements.

The lower end of hopper ai is adapted to be closed by a cone m, which is adapted to be raised and lowered by any suitablemeans.

`The trucks are emptied into a special hopper y having a number of compartments, each of .which is provided at its lower part with a door or bottpm o, the movement of `which `may be obtained in diiierent ways, v either automatically or by hand. l show an arrangement which allows of an automatic movement and thus not requirin any .intervention -on the part of thewor rman. The doors o are connected to chains o' secured to pulleys o mounted on shafts g, which are coupled together by universal joints, and the doors are all actuated simultaneously by a vertical rod 'c which is carried by the hopy p'eny but can move vertically in guides carried by the hopper y. The rod 7c moves with the hop er y around the axis of the furnace and its ower end rides upon a circular track Zwhich at a point in its surface is provided with a raised or cam portion Z seen more plainly in Fig. 5, which causes the rod lo to rise as the lower end of the ylatter passes over said raised portion, and after passing over said raised portion the rod' 7c will ofcourse again descend. y n

The upper end of rod lo is connected to a chain 762 which transforms its vertical motion into a rotary motion of the pulleys p and thus operating the doors Z. When the rod lc rises the doors open and all the compartments ofthe hopper y discharge ltheir contents into the annular space between the hopper CZ and cone m and the parts are so operated that when all the ycompartments have received their char e of coke the doors '0 would be opened to ischarge their contents, and the same action is effected for the ore and when the coke and ore have descended into, the space between parts d and shaft it suitably supported. Upon the up.

per end of the shaft is mounted a bevel pin- ,ion s, with which meshes a bevel pinion t mounted on a' shaft t carrying a .pulley g over which passes a cable g connecting the motor with the carriage b. The bevel wheel t has a pawl and ratchetrconnection (as m", m7, m8 Fig. 8) with the shaft tf so as only to revolve during the descent of the hoisting carriage b so that the hopper only rotates durin the said descent. The extent of each parta rotation depends upon the number of trucks that are required to be discharged into the space between hopper d and cone m for forming on the one hand the charge of coke and on the other hand the charge of ore.

The number of trucks of coke is generally equal to that of the ore and flux and if this number is :n for the coke as well as for the ore, the rotation of the hopper y is of the circumference.

In operation, the carriage b being at the bottom of its course the truck c charged with coke or ore, is introduced into it and-J secured in place by a suitable catch such as e. The cable in exerting its traction causes the haulvmg carriagel b to rise, and this toward the upper end of its course changes its position. The front wheels roll upon the curved part of the set of narrow gage, while the back Wheels continue to run upon the straight set of wider gage rails. Under these conditions, the carriage I) with the truck c assumes the inclined position shown in Fig. 1 and discharges its contents into the hopper y.

In reversing the motion of the* motor, which actuates the cable of the carriage, the latter descends; the inclined plane with the empty truck by gravitation. During the de- Y scent the hopper y turns through a certain distance for receiving the contents of a fresh truck at the side of the first one until the entire charge is completed, this being'ef? fected byy a com lete revolution lof the hopper. When all tifo compartments ofthe hopper have received their charge of coke, all the doors o are opened and the .coke falls i'nto the space between d and m. `The same action is effected for the ore, and when the coke and the ore have descended into the annular space between d and m, the cone m is lowere In Fig. 6 I show a means for raising .and lowering the cone m. al indicates a steam or air compressor cylinder, the iston rod au of which 1s pivoted at a an is pivotally connected with one end of a levera12 and whose opposite end is jointed by a link al? with a rod a carried bythe cone m. A lever a is also pivoted ata and ispivotally connected by second link at with the rod a, theouter end ofthe lever a1s carrying a weight a, Upwardmovement of piston rod a will cause the cone m to be lowered,- while the weight a14 will cause the cone m to be raised againd4 i The advantages of lthis system consist in the reduction of the number and the height of the fall of the materials to be introduced intothe blast furnace. For the coke, in particular, the considerable falls produce fractures and pulverization which cause consid fall to the bottom of the furnace is entirely done away with and the fall at the upper 'end is reduced to its minimum.

The invention can be applied as well to blast furnaces with central gas discharge, as to furnaces with lateral gas discharge, while the existing arrangements for mechanical .charge are only applicable to blast furnaces with lateral gas escapes.

Having now fully described my said in` vention, vwhat I claim and desire to secure by Letters Patent is:

1.l In an apparatus of they character described, the'combination with a yfixed ho per, and a'cone movable relatively to said hopper and adapted to close the discharge .opening thereof, of a rotatable hopper provlded with a plurality of compartments, movable bottoms for said compartments, and means for operating said bottoms to ermit the contents of said compartments to be dischar ed into the fixed .hop er.

2. -n an apparatus of t e character de- ".scribed, the combination with a fixed hopper, and a cone .movable relatively thereto and ada ted to close the discharge opening of said opper, of. a rotatable hopper provided with a plurality of compartments,

movable bottoms for Vsaid compartments, means for operating said bottoms to ermit the contents of said com artments to e discharged.l into the fixed opper, and means for im arting intermittent rotation to the rotatable'hopper.

3. In an apparatus of the character described, the combination with a xed hopfper, and a cone'movable "relatively thereto and ada ted to close the discharge opening af Said Opper', .0f a vrotlwlt -1 'hopper pro# vided with a plurality of compartments, movable bottoms for said compartments,

.means for Operating Said bottoms torermit they contentsof Vsaid compartments to bedischarged into the fixed lhopper, means for imparting intermittent'rotation to the rotat'av ble ho per, a traveling carriage anda truck carri thereby adapted to be tilted to discharge its contents into the rotatable hopper.

4. In an apparatus ofv the character described, the combination with a xed hop-L per,.and a cone movable relatively. thereto and adapted to close the discharge opening of said hopper, of a rotatable hopper provided wit-h a plurality of compartments, movable bottoms for said compartments, means for operating said bottoms to permit the contents of sald compartments to be l,discharged into the fixed hopper, a traveling carriage, a truck carried thereby and means for automatically tilting thetruck at a predetermined point in 'the movement of the carriage.

5. In an apparatus of'the character described, the combination with a fixed hopof said vided with a plurality of compartments,

per, and a cone movable relatively thereto and adapted to close the discharge opening opper, 'of'a rotatable hopper prorising chains 0, shafts g having universaly ]oint connections, pulleys mounted upon said shafts'V to which said chains are secured, a

vertically movable rod carried by the rotatable hopper, a cam-faced track upon which the said rod bears, and a'connection between said rod and said shafts.v

In testimony whereof I have hereunto set my hand in presence of two Witnesses.

` LEN GEUZE. Witnesses: EDW. FORGE, V. D. HUNT.

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