US603543A - Evaporating apparatus - Google Patents

Description

(No Modl.) Q 2 Shets-Sheet 1.

W. H; UNDERWOOD.

4 .EVA-PO-RATING APPARATUS. I No. 603,543. Patented May 3,1898;

FLgJ

WITNESSES V fly L ATTORNEYS.

(No Model.) Sheets-Sheet 2.

W. H. UNDERWOOD. EVAPORAIING APPARATUS.

No.60 3 ,543. A f .Pate nte'd May3,1 898.

N VE N 70/? 4M2? W/ TNE SSE S A TTORNEYS.

m: NORRIS PEYEIS ca, ruorc urnou wAsumnm. a. c

' UNITED STATES WVALTER H. UNDERWOOD,

PATENT OFFICE.

OF HUTCI-IINSON, KANSAS.

EVAPORATING APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 603,543, dated May 3, 1898.

Application filed July 9, 1897. Serial No. 644,006. (No model.)

To all whom it may concern:

Be it known that I, WALTER H. UNDER- WOOD, of Hutchinson, in the county of Reno and State of Kansas, have invented a new and Improved Evaporating Apparatus, of which the following is a .full, clear, and exact description.

The invention relates to evaporating apparatus used in the manufacture of salt and the like; and the object of the invention is to provide anew and improved evaporating apparatus in which the salt is prevented from accumulating on the dome of the fire-box and becoming inorusted and burned thereon, with a consequent burning out of the sheets, as is so frequently the case in evaporating apparatus as heretofore constructed.

A further object of the invention is to i11- creasethe heating-surface of the fines in the pan and to prevent the said fiues from pulling out of the sheets.

The invention consists principally of a feedpipe provided with a distributer extending over the dome of the fire-box, so that the discharged brine washes the salt off as it falls on the dome and before it has a chance to 'burn thereon.

The invention further consists of a fire-box, an evaporating-chamber around the fire-box, a heating-chamber around the evaporatingchamber, and curved fiues in the said evaporating-chamber and connecting the fire-box with the heating chamber to increase the heating-surface of the fiues, and thus permit expansion and contraction of the same without danger of pulling out the fines from the sheets, and also to crack the salt accumulating on the exterior surface of the fines.

The invention also consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in both the figures.

Figure 1 is a sectional side elevation of the apparatus, and Fig. 2 is an enlarged sectional plan view. of the same.

The improved evaporating apparatus is provided with an evaporating-pan A, from the and through the brine contained therein.

with settling-legs E, opening into an elevator F, for carrying the crystals as they form to any desired point above the level of the brine contained in the evaporating-pan'A.

Within the evaporating-pan A is arranged I a fire-box G, and around the said pan is a heating-chamber H, connected by flues I with the said fire-box, so that the flues extend horizontally through the evaporating-pan A A suitable distance above the grate of the firebox is arranged an arched partition G for causing the heat and gases from the burning fuel in the fire-box to pass through the lowermost fines I into the chamber H, and to then pass from the latter below a partition H through another set of fiues I back into the firebox above the partition G, and to finally pass from the upper end of the fire-box through the uppermost fines I back into the chamber H above the partition H to finally pass up the smoke-stacks 1-1 to the outside. The fiues I are curved or S shape in form, as is plainly indicated in Fig. 2, so as to produce a large heating-surface in the evaporating-pan A and at the same time allow proper expansion and contraction of the lines and sheets without danger of the fines pulling out of their fastenings in the sheets forming the fire-box and chambers.

Now it will be seen that when the fiues expand and contract the Walls of the fiues cause a cracking of the salt and scale that has accumulated'on the lines, and consequently the said fines are kept comparatively free from salt, and in cleaning up any particles of salt adhering to the fines may be readily knocked olf.

By having the partitions G and H in. the fire-box G and heating-chamber II, respec tively, the heat and gases arising from the burning fuel in the fire-box are caused to travel a long distance to give 01f their heat before finally passing into the chimneys H and escaping to the outside. Thus a great saving of fuel is obtained in running the apparatus.

By the arrangement described the heat passes through three sets of comparatively long flues before passing to the chimney to obtain the full benefit of the fuel.

The feed-pipe J for carrying the brine to the evaporating-pan A terminates over the apex of the dome G of the fire-box, and on the inner end of this feed-pipe is arranged a distributer J, formed by tappinga series of short pipes into the feed-pipe J, to cause the brine to pass over the dome G so as to Wash off any salt that falls on the dome and before the salt has a chance to burn on the metal forming the dome.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. An evaporator for brine and the like, comprising three concentric chambers, the inner chamber constituting a fire-box and being closed at the top by a conical dome and having a partition across the same central its ends, the intermediate chamber constitutingthe evaporating or brine-containing chamber and extending above the fire-box, and the outer chamber constituting a smoke-flue or breeching and having a partition located above the partition in the fire-box and dividing the same into two parts, the fire-box and smoke-flue being' connected above and below both partitions by horizontal flues curved in an S shape and extending through the evaporating-chamber, and a brine-supply pipe discharging upon the apex of the fire-box dome whereby the same is kept free of salt deposits, substantially as described.

2. An evaporator for brine and the like, comprising three concentric chambers, the inner chamber constituting a fire-box and being closed at the top, the central chamber constituting an evaporating or brine-containing chamber and extending above the firebox, and the outer chamber constituting a smoke-flue or breeching, the fire-box and smoke-flue being connected by horizontal flues curved in an S shape and extending through the evaporating-chamber, substantially as described.

3. An evaporator for liquids containing salts in solution, comprising an evaporating or liquid-containing chamber having a firebox within the same, the upper end of the fire-box being sloping, and a liquid-supply pipe having nozzles discharging the fresh brine upon and arranged to entirely cover the upper surface of the fire-box whereby the fire-box top is covered with fresh brine under circulation and the formation of salt deposits thereon is prevented.

WALTER H. UNDERWOOD.

Witnesses:

EDWIN S. MOORE, W. H. SMITH.

Images