US326182A - Blast-furnace - Google Patents

Description

(No Model.)

P. L. WEIMER & H. T. EUSTON. BLAST FURNAGE.

Patented Sept. 15, 1885.

WITNESSES j NrTaD STATES PATENT OFFICE,

PETER L. VVEIMER AND HENRY T. EUSTON, OF LEBANGN, PENNSYLVANIA:

BLAST'FURNACE.

SPECIFICATION forming part 0f LtteS Patent NO. 326,182, dated September 15, 1885. Application filed August 3, 1885. (No model.)

To all whom it may concern:

Beit known that we, PETER L. VVEIMER and HENRY T. EUsToN, citizens of the United States, residing at Lebanon, in the county of Lebanon andfState of Pennsylvania, have invented certain new and useful Improvements in Blast-Furnaces; 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.

v Under the modern system vof operating blastfuruaces,by which they are worked to their fullest capacity and under exceedingly high pressure and temperature, the hopper and its appurtenanees are subjected to intense heat which is very destructive in its effect.

v The object of this invention is to provide means for supplying a cooling medium autoyto reduce matically from the surrounding atmosphere, or under pressure, tothe parts of the furnace constituting the hopper or chargingchamber, the temperature thereof, and thus protect them from the destructive effects of the heat of the furnace..

Our invention, therefore, consists in the construction of a furnace-hopper and the parts immediately related thereto, whereby a cool- 'ing medium is circulated through the walls of the several parts. e l Our invention also consists in the construction of a Ventilating-chamber provided with i i Iair-ducts surmounting the hopper, and adapted to supplyfresh air tothe upper part of the tunnel-head constituting the charging-chamber, andl to carry off the air which has been circulated through the several parts comprisingsaid hopper or charging-chamber,

In the accompanying drawings, Figure 1 represents a vertical section of the upper end of a furnace-stack comprising the hopper and its appurtenances. Fig. 2 represents a sectional view ofthe automatic valve which supplies air to the Ventilating-chamber.

.Reference being had tothe drawings and v letters of reference marked thereon, A lrepre- Jcntsa plat-form which supports the top plate, B, in an annular rabbet, C, and the stack D. The top plate, B, is provided with an opening, E, surrounded by a vertical flange, F,` in clined on the upper end, and provided witha knife-edge forming a bearing-surface for the cover G.

The hopper H, lip-ring I, the chargingbell J, and the seat-ring K, which latter supports the hopper H, are provided with airchambers formed in the walls of the castings constituting the several parts named, and are supplied with air through pipes a leading to the bell, b b to the hopper, c c to the lip-ring, and d d tothe seat-ring. The air passing through the chambers of said parts is discharged through openings e f g, which are provided with hoods h ij, which serve to protect said openings from the falling stock and de` dect the air passing through said openings over the inner. surface of the castings.- The pipe a, which supplies air to the'bell, is provided with suitable joints, such as are comvmon to'steam and gas pipe fittings' to accom-- modate the rising and lowering 'movements of the bell; and to protect said pipe from be ing injured by the stock dumped into the hopper it is conducted beneath the beam to which the bell is attached, and, passing down through the bell, is connected to the chamber formed therein by the branches k Z; The airsupply may -be induced by the natural draft ofthe chimney D, or it may be supplied by a suitable pump. Instead of conducting air through the hollow castings, the discharge-openings may be omitted and water supplied through one of the pipes and conducted outside of thefurnace through the other pipe with which each cooling-chamber is provided; or the several chambers may be connected and the cooling medium circulated through all of lthem;

Above 'the hopper- H we construct a ventilating-ch'amb'er, L, which is' provided with a 'series of air-fines, M, vpassing through the masonry, which are supplied with inwardlyopening valves lN, as shown in Fig. 2, the

valves being swung from the top or upper side by hinge-joints n. By' this means We secure a copious lsupply of atmospheric air to the hopper or chargingchamber induced by the natural draft of the chimney D, which communicates with the ventilatingechamber L, 'the air circulating over' the surface of the castings `and maintaining them ata reduced 'degreeof temperature. 4The chimney alsa serves to carry off the hot air which4 has passed through the several cooling-chambers and induces the draft of air through said chambers, the air being supplied automaticallywhen taken from the atmosphere, in

cont-act with said chamber, formingone of theV walls thereof, and -a forced blast of `air has been proposed to be supplied thereto. "Ithas also been proposed to form a hollow valve at the bottom of the hopper, separate therefrom and from the charging-bell, for the purpose of -distributingthe stock evenly in the stack of the furnace and to circulate air under pressure through said hollow valve. These means in practice have proved utterly inadequate to meet the demand `for an effective Acoolingmedium, and form no part of our invention.

It will be observed that by our construction the cooling-chambers are formed in the walls of the several castings, and when air is used as the cooling medium, after having been circulated through the cooling-chamber, it is discharged over the outer surface ofthe inner wall of the hopper, chargingfbell, and the 1ipring, thusI utilizing all the cooling effects of the air admitted tothe cooling-chambers.

Having thus fully described our invention, we claim-` Y 1. A furnacehopper providedl with double walls, a coolingchamber formed integral th ere.-l

with and extending throughout the entire hopper, and suitable supply and discharge openi-ngs, substantially as described. -4 Y 2. .A furnacehopper having a chamber formed in the casting between its inner and outer walls,a supply-opening, and a discharge- "vided, with a hood adapted to direct a cooling opening adaptedl to conduct a cooling medium .to the vinside of the hopper, Subsmmy as described.

' 3. A furnacehoppcr havingacooling-chamber between its walls, a suitable-supply and. a

disch arge opening provided'with a hood, substantially as described.

4. A hollow furnace-hopper provided. with protecti ngmeans, substantially as described, for, admitting ja cooling medium thereto and discharg-f ing it over the inner surface of the wall4 of the,

' said ring,substantially as'described.

suplply and a' draft chimney or stack, whereby air is supplied-automatically to cool. the hop per, substantially as described.

tially as described.

9. .A hollow'furnace lip-ring adapted toreceive a cooling medium, and provided with means, substantially as shown, to discharge'itI over the inner surface of its wall, as and for the purposesetforth.

10. A furnace lip-ring having a cooling;

chamberformed in the casting and a dischargeopening provided with a hood, substantially as described. ,Y

11,'A furnaceliplring having a coolingchamber formed in the casting, in combination with a suitable supply and discharge opening, substantially as described.

12. A furnace lip ring provided with a cooling-chamber, in combination with an airsupply and a draft 'chimney or stack, snbstantially as described.

13. A furnace charging-bell provided with double walls, a chamber formed between said walls and integral therewith, and suitable supply and discharge openings, substantially as described. l

14. A hollow 'furnace charging.- bell pro.- vided withln'eans, substantially-as shown, for admitting a.l cooling vmedium and discharging it over the outer surface of` the bell.

15. A furnace charging-bell having a cooling-chamber formed` in the casting, and adischarge-openin provided with a hood, substantially ass own.

l'16. yA furnace charging-bell having a cooling-chamber formed in the casting, air-inlets at its base, and an outlet near the apex promedium over lthe inner surface of the bell,

substantially'as' described.

17. A furnace charging-bell having double Vwalls and provided with a coolingchamber,

in combination withl an air-supply and a draft chimney or stack, substantially as described.

' 18. `A hollow furnace seatring'having a cooling-chamber formed inthe body thereof, and provided with a suitable Yair-supply pipe, inA combination with a'. hopper supported by '19.The combination of a hopper lip-ring. andchargi-ngbell provided with chambers adapted to receive a cooling medium, .and suitable supply-pipes com municat'ing,respect ive1y,with ea'ch chamber, substantially as described.

20. A furnace-'stack surmounted by a ven. tilatng-chamber provided with air-inlets and communicating with a stack or chimney, sub-` stantially as described.

IKO

21. A furnace-stack in combination Vwitha Ventilating-chamber having a series-of pas sages leading to the atmosphere, and proinlets, a Ventilating-chamber communicating vided with automatic air-supply valves, subwith the atmosphere,4 and a draft chimney or stantially as described. stack, substantially as described. l

22. The combination, of a furnace hopper In testimonj7 Whereofwe aiix our signatures x 5 and its appurtenances, with .a ventilatingin presence of two witnesses. chamber communicating with the atmosphere, i PETER L WEIMER vand a chimney or stack substantially as del Scribe@ HENnY T.r EUsToN.

23. The combination of a hollow hopper, lipfring, and charging-be11, having coolingchambers formed therein; suitable air-supply Witnesses:

JNO. A. WEIMER, Tonus REINOEHL.

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