US1232865A - Dust-collector. - Google Patents

Description

W. H. STEVENS.

` DUST COLLECTOR.

APPLICATION mio MAR. 14. 1916.

" 6 Patented July 1o, 19W.

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w. H. STEVENS.

DUST COLLECTOR.

APPLICATION FILED MAR.14| ISIS.

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.LIIII wrLLIAM Harmon STEVENS, or nL'roona, PENNSYLVANIA'.

DUST-COLLECTOR fjnaaaees.

Specification of Letters Patent; Patent-,edil July Ml, lllli'n Application led March 141, V1916. Serial No. 84,011. o

My invention re ates to improved means for collecting dust, carried in suspension by air or other' gas, and, inits preferredv form, it comprises a conduit containing an expansion and collecting chamber provided with baffles, ducts for delivering steam within the chamber, and ducts for delivering water within the chamber.

ln the operation of my invention, the air or gas laden with dust is blown ordrawn through said chamber, where it is expanded, baied, and mixed with steam, to effect deposition of the dust, and the water is delivered within the chamber in the form of fine streams or sprays, to condense the steam, wash down the deposited solid matter and wash the air, whichis thus purified when it escapes from the chamber. y

In the accompanying drawings, Figure 1 isa diagrammatic elevational view of a dust collecting system embodying my improvements; Fig. 2 is an enlarged part sectional plan view of the collecting chamber with its connections; and Fig. 3 is an enlarged part sectional elevation of collecting chambers with connections therefor. y

The invention, in the form inwhich'it is embodied in the accompanying drawings, comprises one or morechambered cylinders or shells 1, formed of sheet metal, each bein provided with a closed top 1"L and with a conlcal bottom or hopper 1b having a discharge duct 2. Each shell is supported by brackets 3 fixed to thelower`l` part thereof and resting on piers 4.l

Baiiies 5 are fixed Within each shell and inclined downwardly from opposite parts thereof, alternating so that a zig-zag course is provided for the dust'laden air or gas` which is baied thereby. The baflles are thus disposed so that waterfalling thereon will run down from one to another in a zig-zag course, washing down deposits and crossing the course through which the gas must travel. f

A steam pipe 6 is provided with la section 6*- which extends around or partially around an intermediate zone of each shell l and with sections 6b which extend from the section 6EL through the shell and downwardly therein, the 'sections 6b bein perforated and spaced within the shell so t at steam jets can be delivered therefrom and distributed thereby under control of a valve 7 in the section 6u'.

A water pipe 8 is providedfw'ith sections 8a which extends lto the upper zones of thb respective shells l, with the laterally extending sections 8b which are connected with the sections 8a through the shell, with the seetions 8c branching laterally from the sec? tions 8b, with the sections 8d whichexte'nd downwardly from the ends' of the'.sections 8,

andiwith the sections 8" which extend laterally from the bottoms of the sections 8d beneath the baflles 5. The sections 8b, 8", 8d,

land 8e are perforated and disposed within the shell so that water under control of a v alve 9 in the section 8a can be sprayed and distributed inthe course of the air or gas and solid matter deposited can be washed down through the shell.

An inlet duct 10 delivers the air or other gas containing dust or other solid matter to be collected through the lower part of each shell 1 to` a part of its chamber below the lowermost balie 5; such gas or air being baied, expanded, mixed with steam and washed within the chamber through the functions of the parts 5, 6b, and 8b to' Se.

The purified air or gas escapes from each shell through a duct 11 connected with the `top thereof and extending downward to an exhaust manifold or box 12 having a hopper bottom 12a into which the pipes2 discharge 1n the form illustrated. The box or passage 12 is provided with the side openings 12b guarded by the upwardly inclined de-A liectors or bailies 12, ythe airor gas escaping upwardly through the openings. Any solid matter deposited within the box is washed down byrain caught by the deflector 12C, and, in case of need,` water can be delivered upon the deflectors to wash down solid matter, which is discharged through the bottom '12a and the discharge duct 16 connected therewith.

The air or gas containing solid matter to be collected is, in the diagrammatic view shown in Fig. 1, drawn by a fan 13 from any place containing or thing delivering solid i matter in suspenslon, as a grain cleaner, oat clipper, hard wood working milling machine, or the like; the fan delivering such air or gas laden with solid matter through the duct llto a usual collecting vessel l5,

l from the box 12, and the sum of the outwhich delivers the gas with the remaining suspended solid matter to the duct 10. i

It will be observed that the dust laden air passes through the fan 13, which forces it through the passage comprising the parts 14, 15, 10, 11, and l2, which increases pr gressively from the fan, the inlet to the duct being smaller than the outlet therefrom, the duct 11 being larger than the outlet from the duct 10 and smaller than the outlets lets 12'J of this "box being greater than th combined cross sections of the ducts 11, whereby back pressure is prevented, the power required to drive the fan is reduced, better deposition of the dust in the chamber 1 is secured, and clogging of the-fan by moisture, as would take place if it were used as a suction rather than as a pressure device, is avoided.

Having described my invention, I claim:

l. In mechanism of the character described, a baied passage, in combination with a box into the top of which said passage discharges, said box having a lateral aperture, a deflector adjacent to said aperture, and a bottom outlet.

2. In mechanism of the character described, a plurality of baiiied chambers, in combination with an exhaust chamber, ducts whereby the tops of said baied chambers are connected with-the top of said exhaust chamber, and bottom ducts by which the re- Spective chambers,l are adapted to discharge their solid and liquidv contents.

3. In mechanism of the character described, a conduit comprising a chamber adapted for depositing and collecting'dust contained in air passed therethrough, and

an exhaustl chamber having lateral Aapertures', deiectors adjacent to the respective apertures and a bottom outlet, fon separat- .ing and discharging dust and air vdelivered from said chamber first named.

4. In mechanism of the character described, a blower, an exhaust chamber, and

WILLIAM HATTON STEVENS.

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