US1539973A - Fume collecting and removing apparatus - Google Patents

Description

June 2, 1925.

E.L.TRUXAL FUME COLLECTING AND REMOVING APPARATUS 2 Sheets-Sheet 1 Filed July 19, 1923 [were for: fan 4E0 1. 257/144,

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June 2, 1925. 1,539,973

E. L. TRUXAL FUME COLLECTING AND REMOVING APPARATUS Filed July 1923 2 Sheets-Sheet 2 fiwenwr: $144460 1 76 02744 W72 asses Patented June 2, 1925. I

UNITED STATES A 1,539,973 PATENT OFFICE.

EDWARD I. TRUXAL, OF WILKINSBURG, PENNSYLVANIA, ASSIGNOR TO THE AMER-I- CAN STEEL AND -WIRE COMPANY OF NEW CORPORATION OF NEW'JEESEY.

JERSEY, OF HOBOKEN, JERSEY, A

' FUME COLLECTING AND REMOVING APrARATUs.

Application filed July 19,

To all whom 2'1- may concern:

Be it known that I, EDWARD L. TRUXAL, a citizen of the United States, and resident of \Vilkinsburg, in the county of Allegheny and State of Pennsylvania,,have invented certain new and useful Improvements in Fume Collecting and Removing Apparatus, of which the following is a specification.

This invention relates to a method of and apparatus for removing fumes and vapors arising from vats, and while not n of apparatus having the novel combination and construction of parts hereinafter de: scribed and illustrated in the accompanying drawings, in which Figure 1 is a plan showing, a pickling vat having fume collecting and removing-apparatus embodying my invention, and adapted for use in carrying out the method forming part of the invention, 1

Figure 2 is a. sectional elevation, on a larger scale, taken on the irregular line II II of Figure 'l.

Referring more particularly to the drawings, the numeral 2 designates the vat as a whole, which is divided into three sections by walls 2 and.2.v The vat shown is of curved formation. However, it will be understood that it maybe made straight if desired, and that each section may be made separate from the other if desired without interfering with the operation of my invention. The vat 2 is adapted to contain an acid solution for removing the scale, or otherwise treating metal articles such as the bundles of rods 3 which are carried'on the holder 1. (See Figure 2).

The forward side wall 5 of-the vat 2 is provided with a pluralityof fiat nozzles 6 arranged side by side along its top in abutting relation with each other. The inside 1923. Serial No. 652,658.

edge of each of the nozzles 6 is provided with a comparatively narrow elongated discharge .slot 7, the slots of the several nozzles forming substantially a continuous air discharge port around the forward side of the int. The nozzles project rearwardly beyond the sidewall f the vat and are provided with 'an inlet port,8 which is connected with a conduit 9 leading from a blast main 10. The conduit 9 is provided with a valve 11 for controlling the flow of air therethrough, and the main 10 extends around the vat 2 end is connected to a suitable power blower or. fan 12.

The rear side wall 14 of the vat 2 is provided along its upper edge with a plurality of exhausting traphoods 15 arranged side by side in abutting relation witheach other.

The hoods 15 have an open forward side 16 and, due totheir abutting arrangement, form a substantially continuous trap around the vat. Each of the hoods 15 is provided with an upwardly and rearwardly inclined top wall 17 and an upwardly an rearwardly curved bottom wall 18 which extends upwardly to within a short distance of the top wall 17, thereby forming a narrow outlet port 19 which opens into a conduit portion 20. Suitable flat side Walls 21 and 22 serve to complete the hood and support the top and bottom walls.

The conduit portion 20 extends downwardly and connects at its lower end with a suitable exhaust main or tunnel 24; which extends along the length of the tank and is connected to a suitable standard exhaust fan 25. A In carrying out my improved method, the blower 12 is started and a blast of air is blown through the main 10, conduits 9 and nozzles 6, from which it is discharged through the outlets 7 forming a practically continuous blast blanket across the vat 2. Simultaneously with the starting of the blower 12, the exhaust fan 25 started to cause a suction in the main or tunnel 24-, conduit 20 and hoods 15,-which due totheir arrangement form a substantially continuous suction or trapping area around the entire rear side of the vat. v

v The acid solution in the vat 2 is generally heated when used and any fumes or vapors arising from the vat are caught by the blast from the nozzles 6and blown over and into the trapping hoods 15. The vapors and fumes arising from the vat are much lighter than air and have a tendency to rise, but due to the velocity of the air from the nozzles 6 they are held down, but as soon as-they enter the trapping hoods they have a tendency to rise. However, since the outlet ports 19 of the trapping hoods 15 are at the upper point thereof the fumes and vapors are caught by the exhaust and drawn down through the conduit 20 and tunnel or main 24 by the exhaust fan 25, and

thence blown out through a suitable stack (not shown) at a point distant from the vat. While I have shown and described only one specific embodiment of my invention, it will be expressly understood that Ido not Wish to be limited thereto, since various modifications in both the apparatus and method may be made without departing from the scope of the appended claims.

:I cla-im:. g 1. The method of catching and removing fumes and vapors arising'from an open top'treatiilg vat, which consists in directing a blast of air across the entire area of the vat so as to blow the fumes and vaporsto;

one side of the vat, and trapping the fumes and vapors atthe opposite side of the vat from which the air is directed.

2. The method of catching and removing fumes and vapors arising from an open top treating vat, which consists in direot ing a blast of air across the vat so as to blow the fumes and vapors to one side of the vat, trapping thefnmes and vapors at the opposite side of the vat from which the air is directed, and exhausting said trapped fumes and vapors.

- 3. The method of catching and removing fumes and vapors arising fro-m a treating vat, which consists in directing a blast of air across the entire area of the vat so as to blow the fumes and vapors to one side of the. vat, trapping the fumes and vapors along the opposite side of the vat from which the air is directed, and forcibly exhausting said trapped fumes and vapors.

, 4. The combination with an open top treating vat, of means for directing a blast of air from one side of saidvat across to the opposite side, and exhausting means ar ranged along the side of said vat opposite said first named means, said blast of air being adapted. to drive fumes and vapors I arising from said vat into said exhausting means.

5. The combination with a treating vat,

of means for directing a blast of air from one side of said vat, across substantially the entire area thereof, to the opposite side so as to blow all fumes and vapors arising from said vat to said opposite side, means arranged along the side of said vat opposite said first narned means for trapping the fumes and vapors, and means for exhausting said fumes and vapors from said trapping means.

6. The combination with a treating vat for treating metal and containing an acid solution, of means for directing a continuous blast of air from one side of said vat,

across substantially the entire area thereof, 'to the opposite side so as to blow all the fumes and vapors arising from said vat to said'opposite side, means arranged along the side of said vat opposite said first named means for trapping the fumes and vapors, r

and means for continually exhausting said trapped fumes and vapors.

7. The eombinationwith a treating vat for treating metal containing an acid solu tion, of a plurality of blast nozzles arranged along the one side wall of said vat, means for directing air under pressure through 'said' nozzles, said nozzles being adapted to direct the air over said vat so as to blow all fumes and vapors across said vat to the side opposite from said nozzles, and a plurality of trapping hoods arranged along the side wall-of said vat opposite from said nozzles and adapted to trap the fumes and vapors blown over by the air from said nozzles. Y

8. The combination with a treating vat for treating metal containing an acid solution, of a plurality ofblast nozzles arranged along the one sidewall of said vat, means "for directing air under pressure through slightly below said-top wall forming an outlet, and means communicating with said outlet for exhausting the fumes and vapors from said hoods.

In' testimony. whereof I have hereunto set my hand.

' EDWARD L. TRUXAL.

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