US2354676A - Gas cleaner - Google Patents

Description

Aug. 1, 1944.

E. F. FISHER 2 Sheets-Sheet 1 E. F. FISHER GAS CLEANER Filed May 26, 1942 2 Sheets-Sheet 2 Patented Aug. 1, 1944 4 Claims. l(c1 short distance below the inlet end of the pipe 2.

This invention is. an apparatus for cleaning dust-laden air or other gas, and is an improvement over the cleaners shown in my Batents 2,259,033 and 2,259,034, dated October 14, 1941, and over the apparatus shown in my applications Serial No. 367,312, filed November 27, 1940, and

Serial No. 421,323, flied December 2, .1941.

For convenience, the gas being cleaned is usually air and the liquid used is usually water, and the invention will be so descrlbed,.although it is to be understood that the invention is not limited to the cleaning oi air nor limited to the use of water as the cleaning liquid.

The apparatus comprises a large vertical openended'tube at about the same level as the usual tangential air inlet located near the bottom of the apparatus. An important object of the inventlon is to provide means whereby water is deliv-,

ered to the outside wall of this vertical tube for keeping this wall thoroughly wet and for washing down" any dust that may have accumulated thereon;

Other advantages of structure and operation will be described in connection with the accompanying drawings, 'inwhich Fig. 1 is a view in vertical cross section;

Fig. 2 is a top plan view; and

Fig. 3 is a section on the line 3-4 of Fig. 1.

Referring now to these drawings, the cleaner comprises a vertical cylindrical casing 2 having a sludge collecting bottom 4, one or more manholes and a top section 9 having an inspection door It.

The casing 2 is provided with, a tangential air inlet; At approximately the level of the tangential air inlet,. there is positioned in the casing, a large open-ended vertically placed tube ll, having a lower edge I! and provided with an out-turned,inwardly inclined flange I! at its upper end. Just below the flange I! is a baiiie ring Ii, also inclined downwardly and inwardly, the outer edge oi. which is in contact with and held by the inner-wall oi the casing,

the upper end .of the tube It is a disc baiiie 25,

while its inneredge 20 deflnes an annular water which slopes inwardly to a central hole through which passesa water inlet pipe 28. Drain holes :1 may be provided in baille 25. Positioned a a be washed down into cone 4.

is a deflector plate llior deflecting water radially, laterally and outwardly through and against swirling vanes II, angularly positioned between the out-turned flange I of tube I4 and the outer portion of the baflie 28.

The vanes II are placed at such anangleas to continue the swirling movement of the water and gas passing upwardly through the tube l4,

while the vanes 24 are preferably angled the other way, as shown in Fig. 3.

In operation, a heavy stream of water from the pipe 26 is spread radially and laterally by deflector it in all directions through and against the vanes 39, against which the dustimpinges,

keeping them washed clean, the dust, air and water continuing its outward circular swirling movement through the vanes. amount of water, however, will drain down the sides of vanes 39 onto-flange l0 and be directed onto the inner wall of cylinder M, keeping such.

wall thoroughly wet, and washed clean of any dust that might accumulate thereon. The puriiled air passes upwardly through the, mist or droplet trap 31 and thence out of the outlet pipe II. Most of the water, after it has passed through the swirling vanes ll, is collected by the heme ring II on which a head oi water builds up, thus preventing any appreciable amount oi air passing upwardly through space 12. This water flows between angular vanes 14 and is delivered to the annular water inlet 22 with a downward circular motion, thereby thoroughly wetting the outside of the tube I4 and keepin iihwashed tree of accumulated dust. Some of the heavier dust particles as they flrst enter the tangential air inlet I! will be thrown out by- -'centriiugal force and will settle in bottom cone while others in passing upwardly in tube l4 iavill'bc impinged on the interior wetted wall because of the high angular velocity oi swirl in this tube, and will While I have illustrated my invention in detail, it should be understood that the invention is not limited to these exact details, but out in other ways.

Icialmasmy invention: I

1. Cleaning apparatus for air or gas, comprising in combination a casing, an open-ended tube positioned vertically therein, an airv inlet in the casing adjacent said tube, a ring baflie surrounding and spaced from theupper end of said .tube, thereby defining an annular liquid inlet adjacent the outside wall 0! said open ended tube, a centrally positioned solid disc baliie above and spaced A substantial may be carried collect water and sludge washed into and through said 2 from the upper end or said tube, swirling vanes positioned between the outer edge or said disc baiile and the upper end of said tube, a liquid 3 spreader plate positioned centrally below the disc 'baiile, a pipe for delivering water under pressure to said spreader plate whereby the water is cons fined between the disc baflie and spreader plate;

and is projected laterally over the entire-surfaces of said swirling vanes, said baiiie-servingzto v ironr'the inner wall or the casing and to directsuchwater' and sludge into and through said annular liquid inlet to the outside wall or the open-ended tube,,-and an-outiet i'or cleaned min the upperfpart oi the 2. Cleaning apparatus for air or ga's, comprising in combination a casing, an open-ended tube positioned vertically therein; an-airinlet adjacent said tubega ring baflle surrounding and spaced from th defining an annular liquid inlet adjacent the outside wall oisaid open-ended tube, liquid coilecting vanes on'the upper, inner edge oi. the ring baiiie, for directing liquid into said annular liquid inlet, a centrally positioned solid disc banie above and spaced from the upper end or said tube, swirling vanes positioned of said disc banie and the upper end of said tube, a liquid spreader plate-positioned centrally below the disc baiiie, a pipe passing through the disc bame for delivering water underpressure to said spreader plate whereby the water is confined between the disc baiiie and spreader plate and is projected laterally over the entire surfaces of said swirling vanes, said ring baifle serving to collect water and sludge washed from the inner wall of the casing and to direct such water and sludge liquid collecting vanes and thence into said annular liquid inlet to the outside wall or the open-ended tube.

3. Cleaning apparatus for air or gas, comprisiflg in combination a casing, an open-ended tube positioned vertically therein, a tangential air inlet adjacent said open-ended tube the upper end of said tube being provided with anoutwardly extending flange, a solid disc bailie positioned centrally above the upper end of said tube, with its outer edgedirectly above said flange, swirling upper end oi said tube, thereby between the outer edge vanes positioned between the coextensive portions of said flange and disc battle, a liquid spreader plate positioned centrally below the disc baflie, a pipe passing through the disc baflle for under pressure to said spreader delivering water 'plate whereby the water is confined between the disc baiile and spreaderplate and is projected laterally over the entire surfaces of the swirling vanes, a ring battle surrounding the upper end of said tube, having its outer edge contacting the inner wall 01' the casing and having its inner edge spaced from tube to define an annular liquid inlet below said outwardly extending flange and adjacent the outside wall of said open-ended tube, said ring bame serving to collect water and sludge washed from the inner wall of the casing, and to direct it to and into said annular liquid inlet, and an outlet for cleaned air in the upper part of the casing.

4. Cleaning apparatus for air or gas, comprising in combination a casing,

positioned vertically therein, a tangential air inlet adjacent said open-ended tube, the upper end of said tube being provided with an outwardly extending flange, a solid disc baflle positioned centrally above the upper end of said tube, with its outer edge directly above said flange, swirling vanes positioned between the coextensive portions of said flange and disc baflle, a liquid spreader plate positioned centrally below the disc baflle, a pipe passing through the disc battle for delivering water under pressure to said spreader plate whereby the water is confined between the disc baiiie and spreader plate and is projected laterally over the entire surfaces of the swirling vanes, a ring bailie surrounding the upper end of said tube, having its outer edge contacting the wall ofthe casing and having its inner edge below said outwardly extending flange and spaced part of the casing. ERNEST F. FISHER.

the upper end or the open-ended an open-ended tube

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