US695034A - Boiler-cleaner. - Google Patents

Description

No. 695,034. I Patnted Mar. II, 1902.

J. H. CUNNOLLY.

BOILER CLEANER.

(Application filed Sept, 16. 1901.)

(No Model.) 2 Shaets-8haet I.

IMHII] THE NORRIS PEYH$ co PHOTO-UTHQ, WASHINUTUN. q a.

No. 695,034. Patented Mar. ll, I902.

J. H. CONNOLLY.

BOILER CLEANER.

(Applieajiion filed Sept. 18, 1961.)

(H0 Model.)

2 Sheets-Sheet 2.

llmrno set-m PATENT @rrrcn JAMES HAYWOOD CONNOLLY, OF CLIFTON, ARIZONA TERRITORY.

BOILER-CLEANER.

SPECIFICATION forming part of Letters Patent No. 695,034, dated March 1 1, 1902. Application filed September 16, 1901. Serial No. 75,560. (No model.)

To ctZZ whom it may concern:

Be it known that I, JAMES HA WOOD Cou- NOLLY, a citizen of the United States, residing at Clifton, in the county of Graham and Territory of Arizona, have invented a new and useful Boiler-Cleaner, of which the following is a specification.

My invention relates to certain improvements in boiler-cleaners of that class adapted for the removal of mud, lime, and other impurities which are driven from the bottom of the boiler under the influence of intense heat and form a scum on the surface of the water.

The object of my invention isto form a practical device of this character which will receive all of the scum and convey the same to a settling-chamber of such nature as to effect a partial cooling of the water and a rapid precipitation of the impurities, the clear water being separated and returned to V the boiler and the precipitate remaining in the chamber, from which it may be discharged as from time to time it may become necessary.

With this and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter more fully described, shown in the accompanying drawlugs, and particularly pointed out in the appended claims.

In the accompanying drawings, Figure 1 is a sectional elevation of a portion of a steamboiler and settling-chamber, illustrating the application of my invention. Fig. 2 is a perspective view of the collecting device detached. Fig. 3 is a sectional plan view of the collecting device. Fig. 4 is a similar view of the same on a somewhat smaller scale.

In the operation of steam-boilers mechanical and chemical impurities formed on the bottom of the boiler or held in suspension in the water will often rise to the surface of the Water under the influence of the heat and form a scum, which if not removed may result in foaming or priming and will after a time form a coating or scale on the tubes and shell of the boiler. In carrying out my invention I provide for the removal of all of the floating scum to a settling-chamber of peculiar construction, where the mixed water and scum are separated partly by mechanical action and partly by the cooling of the water to permit precipitation.

The boiler 1 may be of any of the marine or stationary types, and in such boiler I place a collector 2, the lower portion of which will always be below the low-water line in the boiler; The collector is formed of two sections 3 and 4, secured together by suitable bolts 5. The portion 3 is tapering in form and communicates at its narrower outlet end with a discharge-pipe 6, leading out through the shell of the boiler to a settling-chamber 7. The larger open mouth of the section 3 is secured to section 4, the latter being provided with a series of vertically-extending partitions 8, 9, 10, and 11, the partitions S and 9 diverging to form a flaring mouth at the end of the section l and at their rear ends being extended between the chamber of the section 3, as at 8 and 9, to divide the mouth of the chamber 3 into three parallel entrance-passages, as shown more clearly in Fig. 3. The partitions 10 and 11 extend from points intermediate of the partitions 8 and 9, running in diverging lines toward the .rear of the boiler and forming gradually-contractin g pas sages, which communicate with the side passages formed by the partitions 8 and 9 and the side walls of the casing 3. To each of the partitions is secured a vane or wing 12, which extends in a line parallel with the diverging line of the partition to which it is attached to the shell of the boiler, the outer end of each wing being slightly curved or otherwise so formed as to conform to the contour of the boiler in which it is placed. The various wings will form dams at surface and below the surface of the water in the mal circulation of water from front to rear. The water coming from the front and carrying withit the scum will be deflected by the and will be forced through the flaring mouth formed by these partitions into and through the pipe 6 to the collecting-chamber 7. At the same time the intense heat caused at the rear of the boiler by the entrance of the products of combustion to the horizontal flues will set up in the rear of the boiler a circulation or movement of the water which will tend to boiler and will to some extent retard the norside wings carried by the partitions 8 .and 9 carry the scum toward the collector, into which it will be deflected by the wings attached to the partitions 10 and 11 and will be drawn in through the side passages into the casing 3 and thence discharged through the pipe 6. The collector is set at a slight angle, as shown in Fig. 1, so that the mouth of the tube will normally be under water, and thus prevent steam from blowing over to the settling-chamber, while the tapering contour of the collector will form an entrance-mouth of a height sufficient to cover the usual range between high and low water line of the ordinary boiler.

The collector 7 is in the form of two concentrically-arranged cylindrical chambers 18 and 19, the inner chamber 18 being of much shortenvertical height than the outer chamber and being provided with a perforated bottom 20. The lower portion of the chamber 19 is provided witha blow-off pipe 15, through which the accumulated matter in the settlingchamber may be discharged when required. Extending down through the annular space formed between the cylinders 18 and 19 is a pipe 17 of a diameter less than the pipe 6, and said pipe 17 extends from the settling-chamber through the shell of the boiler to a point considerably belowthe waterline of the boiler, where it discharges the clear water from the settling-tank. The vertical portion of the pipe 17 within the boiler extends through suitable openings formed in the upper and lower portions of the sections 4 of the collector and serves as a support for the front ends of the same.

In the operation of the device the scum entering through the various passages is conveyed by the large pipe 6 under the boilerpressure to the inner chamber 18 of the collector, at which point it is provided with a tangential discharge-opening 18, arranged near the inner wall of said chamber, so that the water within the chamber will receive a swirling movement, tending to separate the heavier impurities, which pass through the perforations 20 in the bottom of the casing and fall to the bottom of the outer casing 19. The water passing through the perforation and expanding in the chamber 19 is partially cooled and becoming clarified from the breaking up of the scum and the deposited impurities is forced through the smaller pipe 17 and returned to the boiler.

The device may be modified in a variety of ways to suit difierent requirements in boilers of various constructions without departing from my invention.

Having thus described my invention, what I claim is 1. In a device of the class specified, a collector having a central chamber, and a widened mouth divided into front and rear entrance-openings by vertical partitions arranged within said mouth and forming diverging wings leading to separate contracted passages connected to said central chamber,

all of said entrance-openings being disposed in the same horizontal plane, a dischargepipe leading from the rear of the collector, and a settling-chamber to which said discharge-pipe is connected.

2. In a device of the class specified, atwopart easing, one section of which contains or forms the main collecting-chamber, a 0011- nected mouthsection having vertical disposed partitions dividing the mouth into a series of separate entrance-openings all in the same horizontal plane, and each of said openings having a separate passage for communication with the collecting-chamber, a discharge-pipe connected to the rear end of the collecting-chamber, and a settling-chamber to which said discharge-pipe is connected.

3. In adevice of the class specified, a twopart casing, one section of which forms the main collecting-chamber, and a connected month section having vertical partitions forming divergent wings and dividing the mouth into several entrance-openings, the vertical partitions forming the forward flaring mouth being extended rearwardly within the main chamber and forming at the entrance end thereof three parallel passages communicating with the various mouths, a discharge-pipe leading from the rear ends of said chamber,and a settli ng-chamber to which said discharge-pipe is connected.

4. In a device of the class specified, a collector disposed in an approximately horizontal line and having at one end a flaring month, a discharge-pipe leading from the rear end of said casing, a settling-chamber to which said discharge-pipe is connected, and a returnpipe leading from the settling-chamber to a point within the boiler, said return-pipe being connected to and serving to support the entrance end of said collector-chamber.

5. In a device of the class specified, a collector within the boiler, a settling chamber comprising two concentrically-disposed chambers,the inner chamber being of less verticalheight than the outer chamber and being provided with a perforated bottom, a blow-0E pipe leading from the lower end of the outer chamber and affording a discharge for the sediment, a discharge-pipe leading from the collector to the inner chamber and havinga tangential discharge-opening within the inner chamber at a point near the upper end thereof, thereby to effect a swirling movement in the water in said inner chamber, and an outlet-pipe of smaller diameter than, the discharge-pipe, said outlet-pipe leading from the outer chamber to a point within the boiler and forminga support for the forward end of the collector.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

JAMES HAYWOOD OONNOLLY.

Witnessesz.

HARRY M. GROWELL, M. O. COYLE.

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