US1083106A - Feed-water heating and purifying attachment for boilers. - Google Patents

Description

W. H. KAY. FEED WATER HEATING AND PURIFYING ATTACHMENT FOB. BOILERS APPLICATION FILED SEPT Patented Dec. 30, 1913;

COLUMBIA PLANOGRAPH CO.,\VASHINOTON. hv c.

T D STATES WILLIAM H. KAY, 0F WOOIDHAVEN, NEW YORK, ASSIGNOR TO HARRY L. POWELL, OF

BROOKLYN, NEW YORK.

FEED-WATER, HEATING AND PURIFYING ATTACHMENT FOR BOILERS.

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Specification of Letters Patent.

Application filed September 9, 1912.

To all whom it may concern:

Be it known that I, WVILLIAM H. KAY, a citizen of the United States, residing at Noodhaven, in the county of Queens and State of New York, have invented new and useful Improvements in Feed-Water Heating and Purifying Attachments for Boilers, of which the following is a specification.

This invention relates to feed water heating and purifying devices for boilers, and the main objects are to utilize the force of gravitation, instead of working against it, in the separation of sediment and salts from water to a large extent, prior to the filtration of the water and flow thereof into the boiler; to provide a free precipitating operation by means of a simple internal construction; to automatically remove the sediment from the filter by a simple operation; and to insure a thorough or complete cleaning out of the attachment by eliminating interior obstructions in the body of the heat ing and settling chamber.

A further object of the invention is to dispose the filter on top of and above the heating and settling chamber or tank in such a way as to effect precipitation in the chamber or tank free from any interference by the filtering material, and to insure that the escape of the sediment into the boiler is not merely obstructed by the filter, but is also substantially prevented by the action of the force of gravitation, as the particles to escape must not only be forced through the filter, but upwardly through the same.

With these and other objects and advantages in view, the invention consists in the construction and arrangement of the several parts which will be more fully hereinafter described and claimed.

In the drawing: Figure 1 is a longitudinal vertical broken section of an ordinary horizontal boiler showing the improved attachment applied thereto and correspondingly broken. Fig. 2 is an enlarged longitudinal vertical broken section of the filtering attachment. Fig. 3 is a detail perspective view of one of the foraminate or wire gauze filtering heads.

The numeral 5 designates any preferred type or form of horizontal boiler equipped with the usual flue tubes 6. This boiler n1 ay also be provided with suitable man-holes or analogous devices for the introduction of the improved attachment, which will be preferably composed of a number of sections for convenience in disposing the same within the boiler and also to assist in the primal structural formation, with advantage from a manufacturing standpoint.

The attachment is suspended by suitable means, such as removable hangers 9, from the top portion of the boiler above the flue tubes, and it will be understood that the attachment may be made as long or as short as desired and correspondingly increased or decreased in diameter in order to vary its capacity in accordance with the proportions of the boiler in which it is disposed.

The attachment embodies essentially an elongated cylinder or receiver 10 having in communication with one end thereof a pipe or tube 11 which serves as the inlet for the feed water and also as the outlet for the sediment and other accumulations during the blow-off operation. By means of a suitable unionor fitting 12 a feed water pipe 13 is connected to the tube or pipe 11 and has a controlling valve 14, and also connected with such union or fitting is a blow-off pipe 15 provided with a valve 16. During the entrance or supply of feed water to the cylinder or receiver the valve 16 in the pipe 15 will be closed and necessarily the valve 14 in the pipe 13 will be opened. The opposite end of the cylinder or receiver 10 is closed and on the top portion thereof, is mounted a section 17 containing suitable filtering material 20. This section preferably consists of a short cylindrical body formed with flanged ends and foraminate or wire gauze covered heads 18 removably fitted in said ends, the lower end being secured to a flanged neck or fixed collar 19 rising from the cylinder or receiver 10 any suitable distance. There is no outlet for the feed water from the cylinder or receiver 10 except by way of the filtering section, so that the water has to rise or pass upwardly to and then through the filtering section and thence escape into the boiler.

When found necessary, the filtering section 17 may be detached from the neck or fixed collar 19 and the heads 18 removed, to clean the filtering material or to replenish or replace such filtering material as may be required. Suitable metal will be used for forming the parts of the attachment as a whole and the structure is simplified or reduced to a minimum relatively to the number of parts necessary in accordance with this invention by having the interior of the cylinder or receiver 10 wholly free of projecting or auxiliary devices, 71. 6., clear from end to end without obstruction.

The feed water enters the pipe 13 and passes into the tube or pipe 11 and [lows into the cylinder or receiver 10, which, as will be understood, constitutes a heating and set-' tling chamber. The water remains in this chamber, which is larger in diameter than the feed pipe, a long enough time to attain a temperature at which salts in solution precipitate, and, also, to permit the solids to gravitate or settle. Finally the water moves upwardly through the filtering section 17 and is thoroughly and effectively purified before it passes intothe boiler. It will be seen that as the water'is compelled to rise up to and through the filtering section in order to escape from the heating and settling chamber, the work of separating the solids and other matter, such .as sediment and precipitated salts, from the water is removedto a large extent from the filtering section, or the filtering material contained in the latter, and is largely effected by gravitation, the sediment and solids as well as the salts being almost entirely separated from the water at the time the latter passes through the filtering material. Hence, the filtering material will not become clogged so rapidly and as a consequence will serve its purpose for a greater length of time without cleansing or replenishment. By this means all foreign matter and solids will be prevented from coming'into contact with the interior surface of the boiler, the said solids and foreign matter remaining in the chamber 10. When it is desired to clean out the attachment as a whole, the valve let in the feed pipe 13 is closed and the valve 16 in the outlet pipe 15 is opened, whereupon the boiler pressure within the boiler will automatically operate to blow out the accumulated sediment and foreign matter as well as solids within the chamber 10 by passing into the latter through the filtering section 17 and driving the accumulations in the said chamber out through the tube or pipe 11 and into the pipe 15, and as there are no interior obstructionsin the chamber 10 the sediment or accumulations will be wholly driven out by a simple operation and with certainty.

It will be observed that the cleansing or blowing ofi operation is efiected by simply reversing the pressure during the operation of steam generation within the boiler. When the boiler is shut down, the attachment may be removed and cleansed, but as the latter operation will be carried on only at long intervals, the more important feature of the invention, so far as cleaning the attachment is concerned, is the utilization of a reversal of pressure as just explained.

It will be noted that the cleaning or blowing off operation is effected partly in a downward .and partly in a horizontal direction, and as a consequence less time will be required in thoroughly cleaning the cylinder 10.- Thisparticularcleaning or blowing off operation is especially important in the at tachment as disclosed for the reason that but a small percentage of the sediment will lodge in the filter, the bulk of the sediment remaining in asemifluid state in the cylinder 10.

here, by reason of the location of the attachment, the outlet will protrude or projectinto the normal steam space of the boiler, suitable means may be employed to convey the purified water into the boiler water, below the normal water line, to prevent contactwith the steam and undue agitation of the boiler Water in the inlet and blow off operations. 7

What I claim is:

A feed Water heating and purifying attachment for steam boilers consisting of an elongated settling and heating chamber interiorly free of all obstruction to a free circulation of Water therein, said chamber having at the upper portion of one end thereof a neck which terminat esabove the top portion of'the chamber and constitutes the sole outlet for the water to be filtered and the sole inlet for the boiler pressure; a combined feed water inlet and sediment and accumulation blow-elf tube opening into the lowermost portion of the opposite end of said chamber in line with the lower bottom portion of the same to' permit a thorough carrying off of the sediment and accumulations therein; and a section mounted directly over and detachably secured to the upper terminal of said neck'and disposed wholly exterior of said chamber, said section containing filtering material, whereby the free passage of the water through said section will be appreciably retarded by the filtering material therein to increase the period during which the water remains in said settling and heating chamber..

In testimony whereof I have hereunto set my handin presence of two subscribing witnesses.

WILLIAIVLH. KAY. Witnesses:

ALLEN S. WVENNS, Rosanne LovY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent; Washington, D. C.

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