US447817A - Evaporating apparatus - Google Patents

Description

(No Model.)

T. GAUNT. BVAPORATING APPARATUS.

No. 447,817. l-Ztented Mar. 10,1891* UNITED STATES PATENT OFFICE.

THOMAS GAUNT, OF` BROOKLYN, NElV YORK.

EVAPORATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 447,817, dated March 10, 1891.

Application led July 18, 1890.

To all wiz/om it may concern.'

'Be it known that I, THOMAS GAUNT, of Brooklyn, county of Kings, State of New York, have invented an Improvement in Evaporating Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like letters on thedrawings representing like parts.

This invention relates to apparatus for the evaporation and distillation of liquids, and has for its object to provide apparatus, as will be described, whereby the liquid being treated may be concentrated to any desired speciiic gravity.

My invention in an evaporating apparatus therefore consists in the combination, with an evaporator and a liquid-supply therefor, of an independent auxiliary or mixing chamber connected to the said liquid-supply and to the evaporator and interposed between them, a valve to control vthe liquor-supply, a iioat connected to the supply-valve and operated by the level of the liquid in the mixing-chamber, and a pump connected to the said evaporator and to the mixing-chamber and a branch pipe connected to the discharge-pipe for the pump, substantially as will be described.

Figure l is a diagram in elevation of an evaporating apparatus embodying my invention; Fig. 2, a detail, on an enlarged scale, of the auxiliary chamber shown in Fig. l; Fig. 3, a side elevation of the auxiliary chamber shown in Fig. 2, looking toward the right, the said chamber being broken out to show the mixer or distributer in the said chamber g and Fig. 4, a top or plan view of the auxiliary chamber shown in Fig. 2.

Referring to Fig. l, A represents an evaporatin g apparatus, which may be of any usual or desired construction, it preferably being composed of vertical rows of tubes, constituting an evaporating-surface, and a liquidfeeder located above the same, substantially as shown and described in United States Patent No. 409,572, granted to me August 20, 1889. The liquid-feeders referred to have connected to them branch pipes a, joined to a supply-pipe a', connected to the bottom of an auxiliary chamber or vessel as, preferably secured to the evaporator A in any suitable manner, the said pipe being provided with a Serial No. 359,133. (No model.)

cock or valve a4, by which the supply of liquor to the liquid-feeders is controlled. The.

auxiliary chamber 0,3 is connected by a pipe d5 to a liquor-supply tank a6, the said pipe being provided with a cock or valve al, by which the supply of liquor from the tank d into the vessel as may be positively controlled by hand. The vessel a3 is provided with a liquor-inlet valve, having its stem b (see Fig. 2) connected by link b to a lever b2, pivoted, as at b3, to an upright b4, secured to or forming part of the vessel, the said lever being connected at one end, as by a link b5, to an air float or vessel h6, the said lioat being connected with the top and bottom of the vessel a3 by rigid pipes D7 hs and iiexible pipes b9 Z910. The weight of the iioat h6 is counterbalanced, as herein shown, by aball or weight Z212, which is adjustable on the lever b2.

The evaporator A is connected, as bya pipe c, to a pump c', having its outlet-pipe c2 extended up and connected to the top of the vessel as, the said outlet-pipe, substantially near the pump c', having extended from it a branch pipe c3, provided with a cock or valve c4, the said branch pipe preferably discharging into the tank or vessel c5.

The auxiliary chamber or Vessel a has'located within it a distributer, (shown as a perforated plate 06,) supported by lugs c7, ex tended from the side walls of thesaid vessel. (See Fig. 3.)

In the operation of my improved evapo-` the float o0 and its contents overbalances the.

weight Z112, turning the lever b2 on its pivot and closing the inlet-valve for the chamber. y

The cock a4 in the pipe d is then opened and vthe liquor in the auxiliary chamber is permitted to iiow through the pipe c and branch pipes d into the liquid-feeders above the evaporating-surface. As the liquor ows from the auxiliary chamber c3 its level in the Said chamber and in the iioat is lowered, and

IOO

the counterbalancing-weight Z212 overcomes the weight of the float h6 and again opens the inlet-valve to the chamber a3, permitting more weak liquor to flow into the vessel or chamber a3. The liquor on its passage through the evaporator is concentrated and is drawn from the evaporator by the pump c through the pipe c and is forced through the outletpipes c2 for the pump back into the auxiliary chamber as if the cock or valve c4 in the branch or discharge pipe c3 remains closed. The partially-concentrated liquor returned by the pump into the vessel a3 falls upon the distributer and mixes with the Weak liquor from the supply-tank a, so that the liquor below the mixing-plate in the Vessel a3 is of a higher specific gravity than the weak liquor in the tank a6. The liquor returned into the vessel or chamber a3 helps to fill the same until the iioat b overcomes the Weight Z912 and cuts oi the supply from the tank a6. The cock c4 remains closed until the liquor has attained the desired specific gravity, and when this has been effected the said cock may be more or less opened to discharge a quantity of the liquid. The greater portion of the liquid, being returned to the vessel a3, further mixes with fresh Weak liquor from the tank a6. The supply of weak liquor, it will be noticed, is

automatically controlled by the level of the liquor in the vessel a3, and therefore the said vessel may, and preferably in practice will, have a vent-opening for the escape of air or vapor in the vessel co3, the vapor preferably being conducted into the Weak-liquor tank a by a pipe h2o, or, if desired, the vessel a3 may be open at its top.

I claimln an evaporating apparatus, the combination, with an evaporator and a liquid-supply therefor, of an independent auxiliary or mixing chamber connected to the said liquorsupply and to the evaporator and interposed between them, a valve to control the liquorsupply, a float connected to the supply-valve and operated by the level of the liquid in the mixing-chamber, and a pump connectedto the said evaporator and to the mixing-chamber, and a branch pipe connected to the discharge-pipe for the pump, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

THOMAS GAUN T. lVitnesses:

JAS. H. CHURCHILL, EMMA J. BENNETT.

Images