US2181232A - Device for flues, chimneys, and the like - Google Patents

Description

Nov. 28, 1939. J. HAAG DEVICE FOR FLUES, CHIMNEYS, AND THE LIKE Filed March 12, 193a Juuemar Johan es [foray Jim A Home ya Patented Nov. 28, .1939

PATENT OFFlCE DEVICE FOR FLUES, CHIMNEYS, AND THE LIKE 1 I Johannes Haag, Neunkirchen, Germany Application March 12, 1938, Serial No. 195,654 In Germany July 2, 1937 sfclaims. (01. 266) The present invention relates to a device for use in connection with the outlet openings of chimneys, lines and the like connected to converters, cupolas, or the like.

vThe object of the invention is to provide a device which makes it possible not only to protect the surroundings of the furnace against discharge, for instance of glowing clinker particles, but practically entirely to recover the solid, frequent- LI ly valuable waste matter.

The invention consists substantially in this, that a roof or covering extending beyond the walls of the chimney, the flue or the like is pro-- vided, the distance of which from the place of emission is made such that incrustations can just form from the waste particles which are carried along. For this purpose the roof or covering may be made adjustable. According to one suitable constructional form there are, suspended at the edges of the covering or roof freely swinging iron chains, bars or other sections in the form of a curtain or in the form of a plurality of curtains which serve for preventing the sparks and emitted particles which are carried along from flying further. The lower side of the covering or roof is preferably covered with sheet metal, so as to provide a smooth surface from whichthe adhering incrustations can be easily removed. The roof or covering is particularly effective, when it projects beyond the wall of the chimney or the like by about to 1 meters.

Further details of the invention will be gathered from the following description. y

The invention besides being very simple has the advantage that for instance persons working in the vicinity of a blowing converter are completely protected from injury, for instance through glowing pieces or through sparks, even when a very strong wind is blowing or the draught of the waste gases is very great. Moreover, it has been found that the immediate vicinity and the more distant surrounding of the furnace are well protected from the nuisance of dust. More particularly, however, the arrangement according to the invention enables the emitted particles to be recovered and used again, which would otherwise be wasted and would even be a source of nuisance to the surroundings, such for instance as particles of lime, iron, slag or the like.

In the accompanying drawing some constructional forms of the device according to the invention are illustrated by way of example.

In the drawing: Fig. l diagrammatically and partially in section shows parts of a converter plane in which the device according tothe invention is mounted over. I the converter chimney, Fig. '2 illustrates a sectional detail view of the device according to the invention on a larger scale,

Figs. 3 and 4 show further modifications of the device according to the invention on a larger scale.

According to the present invention a covering it! is provided above the outlet opening l I of the 1,0 chimney E. This covering Iil may, for instance, consist of reinforced concrete, but may, of course, also be made of some other refractory material. The covering I0 is adjustably connected to the top of the chimney. In the example shown, the .5 covering I!) is supported by six broad-flanged supporting members l2 which extend through the covering iii and are screwed or welded to girders [3 arranged on top of the covering it. All the supporting members l2 are of the same length. 2, Thelower end of the supporting members i2 is provided with a longitudinal slot I4. A screw i5 passed through the upper edge of the chimney extends through the slot M of each supporting member i2 and winged nuts 16 on the screws 55 2 serve to fix the covering [8 in the adjusted position in which it may be arranged in parallel or under an angle to the upper edge of the chimney. Covering I0 is adjusted to such a distance from the emission source of the discharged heated par- 3 ticles, gases and the like that incrustations will readily form from these discharges and adhere to the exposed surfaces of plate I8 and the curtain elements to be described below. ll are reinforcing members of the covering I0, and I8 is a 3. seamless lining fixed to the lower surface of the covering it) and consisting for instance of sheet iron of a thickness of about 18 mm. The lining it may, of course, be welded together from separate sheets. I 40 All around the edges of the covering H3 one or more movable curtains l9 are provided which, as shown in detail in Figs. 2-4, may be of various constructions. For instance, as illustrated in Fig. 2, channel irons 20 are fixed to the lower sur- 45 face of the sheet iron lining It to the flanges of which flat bar members 2|, having for example the dimensions 30 x 5 x 2000 mm., are connected by means of S-shaped hooks or loops 22. In this manner a double curtain is obtained along the edge of the covering I II. This arrangement allows great mobility of the curtains, so that the individual members of the curtains may, by wind blowing past them or even by the draft of the converter gases, be moved and caused to strike 55 against one another, whereby the formation of incrustations is prevented altogether or incrustations or the like formed already are thrown 01f.

Instead of using flat bars 2|, as shown in Fig. 2, two rows of angle irons 23 or chains 24 or in combination one row of angle irons 23 and one row of chains it may be connected to the lower side of the covering in in the manner described and as shown in Fig. 3.

As indicated in Fig, 4 a profile iron 25 of any desired kind may, simply by means of a hook formed at its end, be connected to an angle iron 26 fixed to the lower side of the sheet iron l8. In this manner a curtain consisting of a single row of elements only is obtained. Of course, connecting angle irons 26 and single rows of suspended flat bar members 2!, angle irons 23 or chains 26 may be used, as well as channel irons one or both flanges of which carry profile irons 25 of any kind.

The waste gases and lighter glowing iron particles flowing from the converter or the like are deflected by the roof, the coarser particles rebounding.

The particles which are not caught by the covering i6 are caught by the curtain or ourtains consisting of flat bar elements, angle irons, chains, profile irons of any kind or the like, where they adhere to form incrustations or fall down. After the curtain elements have become encrusted to a sufficient degree to warrant cleaning the same, the incrustations are removed from plate 18 and the curtain elements by scraping or some similar procedure. The cleaned curtain and plate elements are then remounted in proper place and the material removed therefrom is treated to recover the valuable elements thereof.

What I claim is:

1. A device for use in connection with the outlet opening of chimneys, flues and the like connected to converters, cupolas or the like, comprising a covering, having a reinforced concrete base and a seamless lining of sheet metal connected to the lower surface of said covering, supporting members rigidly connected to said covering and adjustably arranged with regard to said outlet opening of said chimney by a slot and screw connection with said chimney walls, flanged irons connected to the edges of said seamless lining, S-shaped hooks suspended from said flanged irons, and a bar iron swingably connected to each of said S-shaped hooks, said bar irons forming a movable curtain all around the edge of said covering and said outlet opening.

2. A device for use in connection with the outlet opening of chimneys, flues and the like connected to converters, cupolas or the like, comprising a covering, having a reinforced concrete base and a seamless lining of sheet metal connected to the lower surface of said covering, supporting members rigidly connected to said covering and adjustably arranged with regard to said outlet opening of said chimney by a slot and screw connection with said chimney walls, flanged irons connected to the edges of said seamless lining, S-shaped hooks suspended from said flanged irons, and a chain swingably connected to each of said S-shaped hooks, said chains forming a movable curtain all around the edge of said covering and said outlet opening.

3. An attachment for the tops of chimneys receiving the waste gases and the particles carried along with them from the furnaces of converters, cupolas, and the like comprising in combination, a substantially horizontal plate arranged above and across the chimney top appropriately remote therefrom, and a plurality of parallel longitudinal members suspended side by side from the rim of said plate.

4. An attachment for the tops of chimneys receiving the Waste gases and the particles carried along with them from the furnaces of converters, cupolas and the like comprising in combination, a substantially horizontal plate arranged above and across the chimney top appropriately remote therefrom, and a plurality of parallel longitudinal particle intercepting and collecting members detachably suspended side by side with small gaps between them from the rim of said plate.

5. An attachment for the tops of chimneys receiving the waste gases and the particles carried along with them from the furnaces of converters, cupolas, and the like comprising, in combination, a substantially horizontal plate detachably arranged above and across the chimney top, moderately remote therefrom and having a larger diameter than said top, and a plurality of parallel longitudinal members suspended side by side from the rim of said plate and terminating adjacent the plane of said top.

6. An attachment for the tops of chimneys receiving the waste gases and the particles carried along with them from the furnaces of converters, cupolas, and the like comprising in com bination, a substantially horizontal plate of reinforced refractory material arranged above and across the chimney top moderately remote therefrom; ledges afiixed to the bottom of said plate, and a plurality of parallel longitudinal particle intercepting members suspended side by side from said ledges.

'7. An attachment for the tops of chimneys receiving the waste gases and the particles carried along with them from the furnaces of converters, cupolas, and the like comprising in combination, a substantially horizontal plate of reinforced refractory material arranged above and across the chimney top at an appropriate distance therefrom; ledges afiixed to the bottom of said plate, and a plurality of longitudinal particle intercepting and collecting members suspended from said ledges side by side with narrow gaps between them and terminating adjacent the plane of the said top.

8. An exteriorly accessible attachment for the tops of chimneys receiving the waste gases and the particles carried along with them from the furnaces of converters, cupolas, and the like; comprising in combination, a substantially horizontal flat plate arranged above and across the chimney top at some distance thereover and adapted to be adjusted in height and to be detached from, and re-attached to, the chimney top; and a plurality of parallel longitudinal members suspended side by side from the rim of said plate on all sides thereof and adapted to be detached from, and re-attached to, said rim, substantially as shown and described.

J O-I-IANNES HAAG.

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