US434706A - Oil-feeding device for blast-furnaces - Google Patents

Description

(Nb Model.)

I. EOKERT. :0IL FEEDING DEVICE FOR BLAST FURNACES.

No. 434,706. Patented Aug. 19, 1890.

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UNITED STATES PATENT OFFICE.

ISAAC ECKERT, OF READING, PENNSYLVANIA.

OIL-FEEDING DEVICE FOR BLAST-FURNACES.

SPECIFICATION forming part of Letters Patent No. 434,706, dated August 19, 1890. Application filed March 16,1889. erial No. 303,514- (No model.)

To all whom it may concern:

Be it known that I, ISAAC ECKERT, a citizen of the United States, residing at Reading, in

' in the manner hereinafter described, and

have invented in connection therewith such novel features as will be fully pointed out in the claims at the'end of the specification.

In the drawings, Figure 1 shows a full side elevation of my device as attached to a blastfurnace, the latter being shown in section, and two modifications of the oil-supplying device being shown, one on either side of the furnace. Fig. 2 is a detail of my supply-cylinder in central vertical section.-

In Fig. 1 the blast-furnace is shown at A, and the entrance of the tuyeres therein is shown at A. These tuyeres, as shown at B, are of the ordinary construction, and are supplied, as usual, from some form of blast apparatus. Underneath these tuyeres there communicates with the same the outlet of my device, and it is here, as at O, that the oil is supplied to the furnace. The blast in entering the furnace has to pass the mouth of the supply-pipe and create a suction, which results in the atomizing of the oil and its thorough distribution through the mass of the solid fuel or slag, or both, which may be used with the ore in the process of reduction.

The oil which is distributed at the point C comes, primarily, through the pipe 0, which descends, preferably, beneath the pillars which ordinarily support the vertical sides of the furnace and proceed to the supply-cylinder, which is hereinafter described. About midway preferably is placed a globe or other valve for the control of the flow of the oil through the pipe 0. This valve is shown at C The outlet end of this pipe may lie along the bottom of the tuyere or go through the middle thereof, and maybe horizontal, as shown at C or inclined, as shown in Fig. 1 at 0*. In the latter case the end of the pipe is turned slightly, so as to approximate to the horizontal and give the oil the proper direction at the last moment. In this case also the end of the pipe is supported in a bearing C while through the back of the pipe there extends a snuifer or a thick wire 0, adapted to be thrust at will into the tip of the pipe for the purpose of clearing the same of any accumulations of soot or thick oil which might tend to obstruct the action of the supply.

The oil is supplied by means of the action of the devices connected with the supply-cylinder D. This cylinder is provided internally with a plunger D, fastened to a pistonrod D the two ends of which extend through the top and bottom of the cylinder through the proper stuffing-boxes, as shown. This plunger is provided with a valve D which opens in the direction of its effective stroke and is kept closed by the action of the spring D. At one end of the piston-rod there is a weight D which tends to depress the plunger and thus express the oil contained in the cylinder through the opening D. The oil is supplied to the supply-cylinder through the opening D from a tank E, which is placed above the level of the top of said cylinder. The raising of the plunger is accomplished either by raising the piston-rod by means of a chain or other attachment at the top of the same or by means of compressed air or steam admitted to the top and bottom of the cylinder, as shown in Fig. 2. This pipe is shown at F, and has two openings F and F into the top and at the bottom of the cylinder, respectively. The branches leading to these two openings are governed by the valves F and F, as shown, and by the same the steam may be admitted to or shut off from. the two ends of the cylinder.

The operation of my device is as follows: Suppose the plunger to be depressed and the oil to be admitted to the top of the cylinder through the opening D and the cylinder thus filled. This being accomplished, the plunger may be raised either, as described above, by the action of the chain at the upper end of the piston-rod or by the action of the steam ICO or compressed air being allowed to come into operation underneath the plunger by opening the valve F \Vhen the plunger has reached its highest position, the steam or compressed air is shut off by the above valve and the action of the weight brought into play. N ow this weight may act either by itself or in connect-ion with the pressure of steam upon the upper surface of the plunger by opening the valve F and allowing it to come in action upon the upper surface. By the opening of this valve more or less the amount of pressure of the oil sent through the pipe C may be varied according to the rate of blast and the quality of the pig to be produced. For a quicker regulation of the flow the valve 0 may be employed between the supply-cy1inder and the furnace.

hat I claim is 1. The combination, with the tuyere and a blast-furnace, of an oil-supply cylinder, the

supply-pipe from said cylinder extending into the tuyere outside its entrance to the furnace, and a snutfer on the discharge end of said pipe within the tuyere between the entrance of the tuyere to the furnace and the end of the supply-pipe leading to said tuyere, substantially as shown and described.

2. The combination, with the furnace and the tuyere having an inclined nipple, of the supply-pipe from an oil-supply chamber, and a snuifer on the end of said supply-pipe passing through said nipple in an inclined direction and having its end within the tuyere substantially in line with said tuyere, as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

ISAAC ECKERT.

.Vitnesses:

S. H. FISHER, A. M. BURKHOLDER.

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