US443743A

US443743A - Sieve-belt for sewage

Info

Publication number: US443743A
Authority: US
Publication date: 1890-12-30
Anticipated expiration: 1907-12-30

Description

(No Model.-)

A. P. BLACK. SIEVE BELT FOR SEWAGE. No. 443,743. Patented-Dc. 30, 1890.

Fl I l HVEHTIJFQ 2 V NITED STATES ATENT FFICE.

ASHER F. BLACK, OF MALDEN, MASSACHUSETTS.

SIEVE-BELT FOR SEWAGE.

SPECIFICATION forming part of Letters Patent No. 443,743, dated December 30, 1890.

Application filed June 2, 1890. Serial No. 554,059. (No model.)

To all whom. it may concern:

Be it known that I, ASHER F. BLACK, of Malden, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improvement in Sieve-Belts for Sewage, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to a device for treating sewage-water-that is, that part of sewage that is fluid and that contains noxious matter either in solution or in a very finelydivided state and carried in suspension, the treatment being to cause the sewage-Water to be sprayed through large quantities of pure air. The air, acting upon the finely-divided descending spray of sewage, oxidizes and otherwise works upon it and renders its noxious elements comparatively harmless.

My invention consists in forming a spraysieve belt by using flat metallic strips for the filling and wire for the warp, the edges of the belt being made strong by the aid of small wire cables, the whole arranged for the purpose of causing the water or other fluid that passes through it to fall in a spray, in which condition it is rapidly aerated.

The accompanying drawings illustrate my device, of which- Figure 1 shows one of my spray-belts and the supporting-pulleys. Fig. 2 is a plan view, much reduced, of a part of one of my sievebelts, and is intended to illustrate the method of forming the parts and connecting them together.

Hereto'fore devices used for aeration of sewage have consisted of various forms of agitators or stirrers and of weirs or dams for the sewage to flow over, also pumps have been used to cause the sewage to fall through the air from quite a height; but these devices, as well as the ordinary sieve, have failed from the fact that the fluid has not been sufficiently sprayed. My device has an advantage over all of these, inasmuch as it completely sprays the fluid and puts it in the best possible condition for aeration.

I will now describe my device.

In Fig. l the belt A is shown as passing over two pulleys B. These pulleys are of such form as to cause the belt to be troughshaped or concave on its upper side, so that the water will have a tendency to flow toward the middle, so that if water is supplied in quantity too great to pass at once through the belt then the excess will flow toward the center, when, if it accumulates to a slight degree and having more depth, it will run through the belt much faster than it does at the edges. If the belt were flat, the excess of water would run off the edges and not be sprayed sufficiently for receiving rapid aeration. The part of the belt that passes over the pulleys B is deflected by other pulleys or rollers, (not shown) so that it is not directly under the part that receives the fluid to be sprayed.

I construct my belt as follows: A warp 1s formed of two edge cables of wire, one of which is shown at D, Fig. 2, and of a series of wires \V \V. Interwoven with this wire W W, I have thin flexible metallic strips 0 O. This method of forming the sieve-belt leaves openings K K of such a nature that a fluid in passing through will not fall directly down, but will be deflected, and the resulting streams will conflict with each other, producing a spray, which effect is quite different from the effect produced by fluid passing through an ordinary sieve-that is, my belt produces a spray, while the ordinary sievebelt simply strains the liquid and allows it to reunite after passing through the meshes, and to fall in a solid stream thatis not sprayed at all, and not in condition to be purified or aerated. I

The openings II II, made at or near the warp wires 'W, serve to increase the spraying qualities of the belt, as they, being located near the lowest part of each section, will serve to check the union of the streams that flow from the openings K K, and otherwise have a tendency to increase the spraying action of the belt.

I claim- 1. In an aerating device, a spray-sieve belt consisting of a series of flat metallic strips held in place by wires and arranged, substantially as described, so as to leave openings K K, as and for the purpose set forth.

2. In an aerating device, a spray-sieve belt consisting of a series of flat metallic strips held in place by wires, each strip having perforations H H, substantially as and for the purpose set forth.

ASHER F. BLACK. Witnesses:

FRANK W. ALDEN, FRANK M. BROWN.