US 1443714 A
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Description (OCR text may contain errors)
Jan. 30, 1923 E. MERRELL.
HLED AUG. 2| ISIB.
Patenten Jan. 3B, 1523.
rino eroine N GEHTET1T5G PROCESS.
pplleatior. mail August .f 'l. flexial ne. 247,955.
invente new and useful Improvements in,
Conoentrating Processes. of which tlm foilowing, taken in connection with the nocum- `pouf/ing drawings, is a full, clear, und exact description. l
This invention relates to certain improvemonts in concantrting recess and apparu tus for carrying out tie Home.
The object; of'tlxe invention is to produc-e f1.5 :in ellicient proc-ass for procluoing concentrated or evaporated. products of milla and similar substances which are sub'ecl; to ma teriol injury by improper application of harmful tmpernturesf In other -Womls, the production of trotedmillr or similar products in which the natural properties n the solids have not been materially filtered during the evaporatingprocess.
(lther objects and advmitages veinte tn the speoiic features of the process, as will more 'fully iippem' from the following: flesc'ription taken in connection with tlxeucco 1-- pnnying drawings, in which- Figure 1 is ,an elevation partly in section., of .m apparatus adapted for 'carrying ouf the process beminA Figure i is a. cross section on line 2 2, Figure l.
Tha apparatus, us shown. comprises a rin sl1aped casting 1 of subsitnntially U-s ripe cro sectionhaving. in this illustration, a sei-ncl ring-shaped casting 2fsecured to the under side thereof, as by 40 bolts -3.
The cesti -2. carries a janine?. -3-, preferably o `cylindrical form and. inging its lower emi closed by plate 4K- ,ll ithxn the jacket i3- an annular oontainer -i-f The container muy, us illustrated, be formedv of vertical conntric walls -5 and -3 formed of sheet metal or similar material and un annular bottom mill iw The imm-.wall or cvlinde'r #-5-7 may be closed at, its upper and; ,as bythe. upwardly tapered or conical top Flhavin at. its central portion n bearing -9- for t le shaft 0-. D
The uppozl um: :if the U-sliupe 'casting -lcarries a ylinclricnl section -11- of silent metal or other suitable material. with. ii: tbe upper end of which ih srrrurerl u usb im; 1'2- formi-zi for inlerlucking engin; nient with the :'up lllof u vapor com The wu l G- of the annular onianer prefernbljp' extends Home. lis-tance above the casting -lso that `d trough -15- is foi-med between the wall 6 and the section -llfor the reception of the concentrated liquu overflowing from the annular container.
The casting -12 carries n suitable baille -l':` having a central opening --1H to permit the par-:Sage of vapor as hereinafter described. Tile baille may be sernned to the casting in any suitable way to permit its removal. :1:4 by screws or otherwise.
. Within the annular container is positioned a lsllitabll rotary beater mounted upon :mil artuuted by the shaft l(J-. This heater comprises a casting -ll. mounted on the shaft Ii0- und formed with n series of, in this instance twelve., radiating arms, euch ulm carrying o vertically disposed paddle or blade -19- of substantially the sume width n.9 tbe radial width of th annular container and extending from die bottom thereof to a'poinl. prefmily slightly above *the cylindrical wall -6-.
The lower ends of these blades or paxicllos are preferably connected, togntber at their inner :md outer edges by vom-entri@ riiws -20- anfl- -2I, respectively, to adel5 rigidity to the structure.
-Tlie upper ends: of the blades or puddles -l9- cornv a, ring-shaped plate -23- Which may ne secured thereto in any suitable manner, and upon this plate are mount.- ed a series of supports -24- for a hood -5-, said hood spaced vertically u shout distance from the upper surfu of the pluto anti proviilexl with an inwardly tapered portion -26- terminntipg in u vertical Harige -27 rotating within the opening in t e barile 1'-.
The shaft -10- may carry a socond baille -28-- arranged in alignment with the oponcondensing chamber ing in the plate -23 to prevent. the direct pasmge of vapor through the opening in said plane to the vapor condensing apparatus. i
The shaft -10- mny, as shown, be removubl keyed to-e soclr'et -JZSL- containing :i spring --30h for resiliently holding the she ft in contact with bearing This socket -29- may carry an oil or g'reese cup B0 adopted to collect oil or other foreign matter that may Bow from the packed joint 31- for shaft -32, of which the socket -29- forms 1m integral Pm Upon the shaft -32- is mounted a suitable beveled gear 3H-l for cooperation with a second beveled gear -34- carried by frurneworlf -35- and driven through any suitable connections, as by pulley This construction may be of ordinary and wall-known form.
The vapor condensing `apparatus I4- embodies the usual condensing chamber 457- containing4 spray pipe 3S-- yund outlet -B9-- for water, the outiet being connected to my suitable device permitting maintenance of vacuum in the vapor condensing chamber-` The co. -13,-, as shown, muy be. provided witli'i un inwnrdlr projecting flung@ -40 inclined upward y to form u trough discharging into the vapor 'condensing upparut-us for the reception of oil or other foreign n mtter that muy he thrown from the cu he 'evaporutingz chamber und the vapor including the cup -l3 are relatively movable toward und ,from euch other to permitI urce to the interior of the' apparatus und withdrawal of the beater when the baille -l7 is removed.
Steam or other heating fluid muy be ndmitted to the chamber formed hy the jacket -3- and the walls of the nnnulur concentrating chamber through any suitable openm notl herein shown or described, und a.
suitable condensution'outlet -41- may be provided und muy, if desired. be trapped in en suitable manner.
lire milk or other liquid may he coutinuonsly supplied to the unnnlur concentrating chamber through Vipe -12- und the annu lar body of liquid within the :uinulur con ceutrutiur chamber is heuted bolli externally und internally. und isstirred or mecham ruilv moved over the heating surfaces nt n desired rute of speed to effect the most :1dvantngeous results, und the s eed is prefeu eblv suliicientli;V high so us to i epress t 1e centrol port-ion oi thc bod): of liouid'below the hearing -9-. while the edge portions thereof ure elevated sufficiently to overflow into the trough l5- so that n continuous disrhzugre of the concentrated liquid is effected E5 into sold trough and from the trough into the tunk -43- which is connected h v pipe I-Jrl to thc vapor condensing apparatus li-1 whereby tno same degree of vucuiun is produced in the tank us exists in the vapor condensm appurntus and the commenti-:ating chamba-,1; 1ere y permitting a free discharge of the concentrated liquid,
Continuous removal of the condensed liquid m`ey be elfected by means of suitable discharging up drums.
Preferaby t e inner wall om of the concentrating chamber is provided with a partition 4-5 extending across said wall at the buse of the conical upper Jurtion to prevent heating of said conical portion, thereby insuring u complete covering of the heated surface with the liquid.
ll`he sepurution of the vapor from the liquid is hastened hy the stirring effected through the rotary beutel' und the va wf is separated from the nnnulurbody of liquid :it the upper end of the saune und discharged through the separating: apparat-us into the vii-por condensing u pnrutus where it is immediutely coudcnseil. to produce high vuenuiu in the apparatus.
ily the term high vncunm as used in the specification und claims hereof. 4Imeuu u vnf-nun.- o npwnrdso ei hteen (18") inches of mercury, und prefere ly in uctunlV metif-e l employ u vacuum of upu'uu s of twenty-six (if') inches of mercury corre, spondiui,r io u milk vnporzng temperature of up roxinniiely 130. i
Although l imvr' described one-particular process und series of steps us peruups irefcrnhle in crr'lviug ont my invention und one speciiic nppurutus us pcculiurly mlnpted for the purpose described, l do notl desire to iimit myself to the dctnils oi' eitl\ci"the process or nppurutns us various chunges and suhsitutions` muy he mudoy without departing from the spirit of thisA invention ns setforth in the appended claims.
' lVhut. l claim is;
l. The process of conccutrnting a substance oontuining liquid consisting in slieping the liquid in m1 annular body, heating the interior und exterior of the annuler body to u temperature sul'licientto vuporize liquid constituents of the substance treated nt. the maintained pure, mechanically moving; the treated substance in n rotary dirertionl continuously supplying the substence to one end of the annuler body, continuously discharging the concentrated substunce from the opposite end of said body, und subjecting the body of suhstnce to high vucuum.
2. The process of concentrating a. substuuce containing liquid consisting in' sluipini:I the liquid in an :annular body, heating the interior und exterior of the annular body L0 a temperature suliicient to vaporize liquid constituents of the substance treated ,alo
st the maintained pressure, mechanically moving the tre substance 1n a rotary direction. continuo sl supplyin the sub-V stance to one end of t e annu ar y, continuously discharging the concentrated substance from the opposite end of said body, separating the vapor from the body of liquid at the discharge end of said body, and con densing the separated vapor to produce hlgh vacuum in the space about the body of liquid.
The process of concentrating a substance containing liquid consistingfin continuously introducing the liquid into one end of an annular container having concentric annular treating surfaces, heating the interior and exterior surfaces of the annular body of liquid confined between said annular treating surfaces to a, temperature sufficient to vaporize liquid constituents of the substance treated at the pressure maintained in the container, mechanicall moving the substance relatively to sai( treat= ing surfaces,l continuously discharging the' concentrated substance from the container, separating the vapor from the liquid at the discharge end of the body of substance, and maintaining high vacuum in the container.
4. The process of concentrating a substance containing liquid consisting in continuously introducing the liquid` into one end of an annular container having concentric annular treating surfaces, heating the interior and exterior surfaces of the annular body of liquid confined between said annula r treating surfaces to a temperature suicient to vaporize liquid constituents of the i substance treated at the pressure maintained in the container, mechanically moving the substance mlativel y to said treating surfaces, continuously discharging the concentrated substance from the container. separating the vapor from the liquid at the discharge end of the body of substance, and condensing the separated vapor to produce high vacuum in the container.
5. The "process of concentrating a substance containing liquids consisting in introducing the liquid into one end of a container having an annular portion formed with concentric annular treating surfaces, heating the exterior and interior surfaces of the body of liquid confined between said annular treating surfaces to a temperature sufficient to vaporize liquid constituents of the substance treated at the pressure maintained in the container, mechanically moving the substance relativel to said treating surface, continuousl disc arging the concentrated substance rom the container, se arating the vapor from the liquid at t e discharge end of the body of substance, and maintaniing high vacuum in the container.
v6. The process of concentrating a substance containing liquid consistin in introducing the liquid -into one end o a vertically arranged container having an annular ortion formed with concentric annular treating surfaces, heating the interior and exterior surfaces of the annular body of liquid confined between said annular treating surfaces to a temperature sufficient to vaporize liquid constituents of the material treated at the pressure maintained in the container, mechanicall moving. the substance relatively to said treating surface and in a rotary direction within said container. separating the vapor from the liuid at the upperend of the body of liqui and condensing the vapor to produce high vacuum in the container. ln witness whereof I have hereunto se't my hand this 31st day Aof July, 1918.
OLIVER EDWARD MERRELL.