US337670A

US337670A - Feed-water heater

Info

Publication number: US337670A
Authority: US
Publication date: 1886-03-09
Anticipated expiration: 1903-03-09

Description

(No Model.)

T." DAVIS 8v W. W. TYLER.

FEED WATER-HEATER. No.. 337,670. Patented Mar. 9, 1886.

N. PETERS. Phoio-Likhcgrahher. Wilhingion. 0.6.

NITED STATES PATENT rrrcn.

THOMAS DAVIS AND WVILLIAM IV. TYLER, OF CLEVELAND, OHIO.

FEED-WATER H EATER.

SPECIFICATION fol-min art of Letters Patent No. 337,670, dated March 9, 1886.

Application tiled October 16, 1885. Serial No. 180,049. (No model.)

To (tZZ whom it may concern:

Be it known that we, THOMAS DAVIS and WILLIAM W. TYLER, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new andsuseful. Improve;

ments in Feed-Water Heaters and Purifiers; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

Our invention relates to improvements in combined feed-water heaters and purifiers; and it consists in certain features of construction, and in combination of parts hereinafter described, and'pointed out in the claims.

In the accompanying drawings, Figure 1 is an elevation of ourimproved heater and purifier. Fig. 2 is an elevation, in section, at right angles to the view shown in Fig. 1. Fig. 3 is an enlarged section of the valve for discharging sediment.

A represents the shell of the heater, that is usually round in cross-section with a domeshaped top, A, but the form is not essential, and may be varied according to circumstances. The dome A terminates above, preferably in a cylindrical drum, A.

The dome and bottom A are usually secured by bolts or studs so that they are detachable, by means of which access may be had to the inside of the heater, for cleaning, repairs, or other purposes. Inside the casing has ledges a, for supporting the screens B and the concaved bottom plate, 0, of the heating-chamber.

Between the screens B is the filtering-chamber B, the latter being filled with any suitable filtering material. Access to this chamber may be had by removing the man-hole plate 6. Below the filtering-chamber is the sediment-chamber D, from which leads the discharge-pipe D, provided with the valve cl.

On the plate 0 rests the plate 0, the two plates inclosing the heating-chamber c. The plate 0 is preferably dome-shaped, as shown, and is considerably smaller than the dome A, leaving a suitable space between the outer and inner plates, as shown. The plate 0' has a series of small perforations, c.

E is a steam-pipe leading from the steamspace of the boiler, and is provided with a stop-va1ve,e. This pipe passes through the top of the dome A aud screws into the top of the plate 0, so as to discharge into the heating-chamber e. A stuffing-box, e, is usually employed to make a tight joint where the steam; pipe passes through the dome A F is the"indu'ction feed-water pipe, and is provided in the usual manner with the checkvalvef and stop-valvef. This pipe is pref- 6c erably connected with the side of the dome A, and discharges on top of the plate 0'.

G is a pipe connected with the central or depressed part of the plate 0, and leads down ,r through the filtering-chamber, as shown 1 Fig. 2. The water introduced through the pipe F passes through the orifices c and falls in a spray into the heating-chamber, where it comes in contact with live steam admitted through the pipe E. The water is of course raised to a high temperature and passes down through the pipe G, and as the sedimentchamber becomes filled the water is forced up through the filtering-chamber into the chamber G, from which it passes through the pipe g to the boiler.

H is a small winged waterwheel, that isset in position for the current of water passing down through the pipe G to strikethearhugsv or buckets-h, so as to slowly rotatethe wheel. The wheel is mounted on a spindle, h, that outside the heater has a crank, I, to the wrist of which crank is attached the pawl i. This pawl engages the notches of the ratchet-wheel J, so that every revolution of the water-wheel moves the wheel J one or more notches, according to the throw of the crank I. The

wheel J is mounted on a shaft, J, the latter being journaled in a suitable box, j. ,Spitable stuffing-boxes, 6 form tight joints where the shaft h passes out of the shell A. The valve (1 of the pipe D is closed in its elevated position, and is held closed by the pressure of water in the pipe. The valve-rod d extends upward through the valve-casing, and is in position to be engaged by the lug or cam K, the latter being attached to the ratchet-wheel, and by means of which engagement once during each revolution of the ratchet-wheel the valve is depressed or opened, and is held open a short time until the cam draws ofi' of the valve-stem, when the water again closes the valve. The heating and downward discharge of the water tend to precipitate the sediment LII and deposit the latter on the plate A, from which it is easily blown out it it is not neglected and allowed to remain too long, in which latter case the sediment forms a hard crust that is removed with difficulty.

By means of the automatic mechanism hereinbet'ore described, every few hours, and before the sediment has had time to harden, it is blown out.

The apparatus is automatic in all ofits functions, and needs little or no attention, except to occasionally remove or cleanse the filtering material.

The advantages of feeding 'pnrewatcr to the boiler and having the water heated to such a high temperature as will preventacontraction of the boiler when the water is introduced, are too well known and appreciated to require further mention here.

\Vhat we claim is- 1. In a i'eedwater heater and purifier, the combination, with a sedimeat-chamber pro vided with a discharge pipe and valve, 0t a water-wheel arranged so that the latter is actuated by the movement of the feedwater, said water-wheel having suitable connecting mechanism, substantially as indicated,whereby thefsaigladischargingvalve is operated an tomatically, substantially as set forth.

2. In a feed-water heater and purifier, the combination, with a sediinent-chan'iber, a dis charging pipe and valve, and a water-pipe leading to said sediment-ch amber, ot' a water-wheel so located as to receive the discharge of said water-pipe and be rotated thereby, said waterwheel having suitable connecting mechanism,

preferably as shown, for operating automatically the said discharge-valve, the parts being arranged and operated substantially as described.

3. In a feed-water heater and purifier, the combination, with a heating-chamber above, a scdimentchamber below, an intermediate filtering-chamber, and a pipe leading from the heating-chamber. and discharging into the sedimentchamber, of a water-wheel located in the sedimentchamber in position to be actuated by the current of the feed-water, said water-wheel having suitable mechanism connected thereto, arranged substantially as indi- 'eated, for operating the discharge-valve ot' the sedi merit-chamber, the parts being, arranged and operated substantially as set forth.

4. In a teed-water heater and purilier, the oombiuation,with a water-wheel located in the sedimeat-chamber in position to receive and be actuated by the feedw ater in trodneed to the sedii'nent-chamber, ot a spindle and crank connected with the waterwheel, and a pawl connected with the crank and engaging a ratchetwheel, the latter having a cam or lug for engaging the stem of the discharge-valve, the parts being arranged substantially as set forth.

In testimony whereof we sign this specification, in the presence of two witnesses, this 13th day of October, 1885.

THOMAS DAVIS. \VILLIAM \V. TYLER.

Vitnesses:

DANIEL Roe-Ens, G. W. SIIUMWAY.