US773915A - Water-purifying apparatus for steam-boilers. - Google Patents

Description

No. 773,915. PATENTED NOV. 1, 1904.

I D. BEST. I

WATER PURIFYING APPARATUS FOR STEAM BOILERS. APPLICATION FILED MAR. 14, 1904.

N0 MODEL.

m'tnesses: fizz/ endor Patented November 1, 1904.

PATENT OFFICE.

DANIEL BEST, or SAN LEANDRO, CALIFORNIA.

WATER-PURIFYING APPARATUS FOR STEAlVl -BOILERS.

SPECIFICATION forming part of Letters Patent No. 773,915, dated. November 1, 1904.

Application fil d March 14., 1904. Serial N0. 198,001. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL BEST, a citizen of the United States, residing at San Leandro, in the county of Alameda and State of California, have invented new and useful Improvements in ater-Purifying Attachments for Steam-Boilers, of which the following is a specification.

My invention relates to an attachment for steam-boilers which is designed to separate the impurities from the feed-water of such boilers previous to its being introduced directly into the boiler.

It consists of an attachment having retaining-surfaces, means for supplying water to pass over said surfaces under the influence of heat from the boiler, and means for delivering the purified water into the boiler.

It comprises combinations of parts and details of construction, which will be more'fully explained by reference to the accompanying drawing, in which the figure is a sectional elevation of an upright boiler, showing my at-- tachment.

The great difliculty encountered in the use of steam-boilers is in the procurement of sufficient pure water for steam purposes and to prevent the deposit of sediment or impurities which the water may carry within the boiler itself.

It is the object of my invention to provide a device forming an essential part of the boiler whereby the water may be substantially freed from all or the greater portion of such impurities before it is admitted to the main portion of the boiler.

It will be understood that this apparatus may be applied to any well-known or ordinary form of fire or water tube boiler, either vertically inclined or horizontal.

I have here illustrated my invention as applied to the vertical type of boiler.

A represents the shell of the boiler, having a fireplace or furnace B in the lower part, with the usual surrounding water-legs connecting with the interior of the boiler.

C represents fines. or tubes of the ordinary description fixed in the boiler.

2 represents the convergent head from which thesmoke-stack 3 arises and through which the products of combustion are ordinarily discharged. Surrounding this head is an extension 4 of the boiler, which is here shown .as being cylindrical in shape: and having a top 5 extending inwardly to the upper part of the head or base of the smoke-stack, as shown. These parts are properly stayed and form a chamber exterior to the smoke-stack. Around the interior of this head are retaining-surfaces 5. In the present case I have shown these surfaces in the form of spirally-disposed plates fixed to the outside of the cone and 7 within the exterior chamber; but it will be manifest that the surfaces may be variously disposed, dependent upon the character of the boiler to which they are applied.

6 is a pipe connected with any source of water-supply, and through this pipe water is delivered into the upper part of the chamber, falling upon the upper retaining-surfaces and in the present construction flowing around the spiral and discharging at thelower end thereof into the bottom of the exterior chamber.

7 is a steam-pipe having a suitable controlling valve or cock 8. This pipe has its lower end connecting with the upper part of the steam-space of the boiler, and the upper end discharges into the purifying-chamber, so that steam from the boiler is delivered intov this chamber, and the chamber is also subjected to the direct heat of the escaping products of combustion through the interior cone.

It will be understood that exhaust-steam from the engine may also be employed in lieu of the live steam, the object being in any event to raise the temperature of the water which is introduced into this chamber to such a point that the impurities carried by the water will be deposited upon the retaining-surfaces within the chamber.

9 is a pipe having its upper end connected with the lower part of this purifying-chamber and the lower end delivering water to the lower part of the boiler, here shown as opening into the water-leg around the furnace. This pipe is preferably connected with the purifying-chamber a short distance above the bottom, and this provides for a quiet body of water at the bottom of said chamber in which the disengaged impurities will have an opportunity of settling.

10 represents handhold-plates arranged in the top of the purifying-chamber, and 11 are similar handhold-plates covering openings around the lower part. These openings allow ample ingress for cleaning out the purifyingchamber from time to time. If the temperature of the chamber be hot enough to convert all or a portion of the feed-water into steam, this steam will be transmitted to the boiler through the conducting-pipe.

Having thus described my invention, what 1 claim, and desire to secure by LettersPatent, is

1. The combination with a steam-boiler, of a convergent head surmounting the boilercasing and from which head the smoke-stack arises, an extension of the boiler-casing surrounding the convergent head and secured to the lower end thereof, said head provided with retaining-surfaces, means for admitting steam to heat the water contained in said head, and a conducting-pipe connecting with the boiler and having its upper end connected with the chamber of the extension at a point above the lower end of the head.

2. The combination with a boiler, of a cas ing surmounting the same and forming an extension thereof, an upwardly-converging head within said extension and having its lower L portion secured to the inner wall thereof; whereby the upper part of the extension forms a closed chamber, means for supplying l water to the upper part of the chamber, a series of retaining-surfaces over which said water passes, means for admitting steam to the chamber to heat the water, and a waterconducting pipe connecting the chamber with the boiler.

3. The combination with a boiler, of a supplemental chamber forming an extension of the boiler-casing, an upwardly-converging head within said extension and having its lower edge secured to the inner wall of the chamber, said head having a spirally-disposed retaining-surface on its outer surface,a smokestack leading from the head, means for supplying waterto the upper part of the chamber to pass over said surface, means for admitting steam to heat the Water and deposit the impurities upon said surface, anda waterconducting pipe leading from a point above the bottom of the chamber to the boiler.

4. The combination with a boiler and an extension thereof forming a supplemental chamber around the upper part, a heat-conducting cone extending through said chamber; and having its lower portion secured to the inner wall of the extension to close said portion and form a settling-basin, said cone connecting With the stack, retaining-surfaces fixed to the cone within the chamber, means for supplying Water to flow over said surfaces, means for admitting steam to said chamber, a settling-chamber located in the lower part of the main chamber, and a pipe connecting that portion above the settling-chamber, with the interior of the boiler.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

DANIEL BEST.

Witnesses:

S. H. NOURSE, D. B. RICHARDS.

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