US374828A - Purifying water for boilers - Google Patents

Description

(No Modei.) I 2 sheetssheen 1. C. ELLIOT.

PURIFYING WATER POR BQLBRS. Y No. 374,828. Patented Dec. 13, v1887.

N PEYERS. Pimm-Lilhraphef` Wnshinglon. D. CA

UNITED STATES "PATENT OFFICE.

CHARLES ELLIOT, lOF SAN FRANCISCO, CALIFORNIA.

PURIFYING WATER FOR BOILERS.

SPECIFICATION forming part of Letters Patent No. 374,828, dated December 13, 1887.

Application filed July 2Q, 1887. Serial No. 245,011. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES ELLIOT, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented certain new and useful Improvements in Apparatus for Purifying Water for Boilers, of which the following is a specification. Y

`Myinvention relates toimprovements on the apparatus for purifying water for boilers patented to me February 6, 1883, and numbered 271,821, whereby the apparatus there shown is greatly simplified by dispeusing'with the check-valve in the overflow, having but one pipe for blow-off and feed-water supply, and other modifications, hereinafter described.

My invention consists 'of a closed settler which is placed inside the boiler.v It has at one end an open standpipe,in which the water stands above the level of that in the body of the settler, and at the other end a pipe leading out of the boiler. The feed-water is forced iuto the settler in boiler through one branch of this pipe, while the other branch is used to blow off the settler. rlhe outlet or overliow to let the water into the boiler extends down into the settler to trap the floating matter, while its outer end terminates above the level of the water-line in the boiler, but below that of the open end of the stand-pipe. The diameter of the stand-pipe is that of the short- 'est diameter of the settler.

Fig. 2 is a view of the same when placed in an upright boiler.

A is the boiler.

B is the settler or body of the purifier.

C is the stand-pipe, of the full size of the tube forming the: -body of the settler. It is fastened directly to and forms part of the settler, but does not extend downward into it, so that no space is formed in the settler for the steam to accumulate and blow out the water,as it does in all other purifiers of this description.

D is the pipe leading from the other end of the settler at or near its bottom, and having the branch E leading to the feed-water-su ppl y pump.

F is the blow-oft` branch of pipe D.

G is the feed-water-supply pump.

Its inner end, as shown, descends below the water-line a a in the settler, so as to trap the floating matter, b. Its outer end is above the level of the water-line x m in the boiler.

I I are clamps by which the settler is held in place.

.I J are the boiler-tubes.

K K, Fig. 2, are the grate-bars.

In Fig. 2 the settler is shown placed in an upright boiler, in which case the upper eX- tremity of the settler-body becomes the standpipe C; but the relations and operation of the different parts of the settler are identical in every respect with Fig. 1. Its operation is as follows: Water being fed into the settler through the feed-pipe E D, itsimpurities sink or rise, as the case may be, and the heated water escapes into the boiler through the overiow free from all such impurities.

From this novel and' simple construction of the settler many advantages arise. Owing to the large size of the stand-pipe and the pressure of the column of water caused byits height above the settler-body, the introduction of cold water into the settler does not cause a concussion, dangerous alike to both boiler and purifier and liable to burst the feedpipe. The absence of any cavity or space in the settler for` the accumulation of steam prevents lthe blowing over ofV the feed-water with its impurities in the settler into the boiler. The opening of the overtlow being abovethe waterline in the boi-ler, the water in the latter is not sucked or driven out through the settler whenever it is blown out, or the volume of water in the settler lessened from any cause. Whenever the settler is blown out, the column of Water in the stand-pipe causes the steam to blow through it from end to end, expelling all deposit and effecting a thorough cleansing. In introducing the feed-water into the boiler it is compelled to flow the whole length of the settler, by which it becomes thoroughly heated and purified.

Vhile I have shown the stand-pipe of the same size as that of the tube or boxconstituting the settler-body, that being the size which I prefer and which gives the best results, as far as I am now aware, this size may be varied within certain limits without departing from H is the outlet or overflow by which the water from the settler escapes into the boiler. v

the spirit of my invention, which consists in so shaping and attaching the stand-pipe to the body of the settler that no cavity shall be formed in the settler in which steam can acenmnlate, and in maintaningahead of water above the level of that in the body of the settler proper.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. An apparatus for purifying Waterwithin a boiler having a closed body, a stand-pipe, an overflow, anda combined feed and blow-oli` pipe, substantially as described.

2. The combination,`with a closed settler having,r an overliow, of a stand-pipe placed upon the settler, as shown, by means of which the settler will be maintaineLhfuH of wate'r, a

C, overiiow H, pipe D, and branches Eand F, Y

arranged substantial] y as hereinbefore set forth.

In testimony whereof Lhave affixed my signature in presence of two Witnesses.

CHARLES ELLIOT.

Vitnesses:

WM. R. HATHAWAY, JAMES V.

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