Патент USA US2116862код для вставки
May'lO, 1938. 2,1 l 6,862 C. F. DINLEY APPARATUS FOR TREATMENT WITH soLvENTs Filed Nov. 28, 1934 3 Sheets-Shçet 1 .55 ` JUG; l; „/ / 1, //o œ o wf/ /f//o w/o /ïoß/ o, ./.l / f, „T/f2 0/0 onv / 0%@ 0/,0 /o y ß ß w F A i _, ,Y. o INVENTOR Clarezwe if? Dawley, BY ATTORNEYS. May l0, 1938. C. F. DINLEY ' 2,116,862' APPARATUS FOR TREATMENT WITH soLvENTs Filed Nov. 28, 1934 3 Sheets-Sheet 2 55 .55 I. Effi @ß ~ ` ¿V s@ 1f _______ ggf' o o o o O O O O O O O 0 l y] ' o o o o «ùß /43 o o o o ya v 10 _ di' ‘ 2,g\ _à ° 55; _ _ _ _ _ _ _ _ __A-___A . 1929 o â’ß 65’ 5f@ “f5-*î 52/ î.:-'__;;_‘ « 2l ° 52 T w 24 , W20 ` . 25 26 mi ¿1L-T_T 50 “m ï-i-ii-E 51- « 1111 ¿i S2 EE: fr S‘ @ff @ß ' 1a î j ï Ai i; -ß 442/ 321-222; f- 12 1 __1-_î “___ L " 5l L ä? 35 ïëîïï'fï _;*f r v , n‘wç" 1 ‘_ *___L* ' __ '15 l?? Í ' 35255; A» + ¿Z9 l-î-î §12. 5s 1f » î I it î 5E' , 1&5@ 6L á; ~ 25?@ ÍÖ ` \ 60 l _ ’f5 »„ f 62 i L ‘ W1 TNESSES: IN VE1\_’TOR: M á Clm'ezwe if? ßznZ/eg, BY “ ‘ May 10, 1938. ’ c. F. DINIQEYÍ " 2,116,862 APPARATÚS FOR TREATMENT WITH ysoLvENTs Filed Nov.~ 28, 1954 >_; sheets-_sheet s ATTORNEYS. ‘ Patented May V10:19313 j ¿2,116,862 UNITED STAT-ss >'Parrslv'r omer. ausm APPARATUS , ron TREATMENT wrm soLvsNTs / clarence r'. ninley, '-netrou, man., mig-nm», ~by assignments, to Solvent Machine Com pany,'trnstee, Detroit, Mich., a corporation oi' ' Michigan « ` Application Hmmm es. 1934,- serm Na». 755,246 4' claim.. (ci. s1-`-c) My invention relates to treatment with solvents for such purposes as cleaning andr degreasing. and lto the use of volatile solvents. It is especially used hot or4 even boiled during use; or .when the adaptable and‘useful for cleaning metal"`sheets, solvent is purposely used in the vapor state; or when the work is allowed to drain or dry in the upper portion of. the vessel after treatment with plates, or other fiat articles or work. For ex the solvent;-in all such cases. solvent vapor will `ample, plates that have been worked or operated on with the aid of lubricant may advantageously be4 cleaned _according to my invention, either for shipment or . preparatory to - electroplating. 10 enamelling, painting, or other finishing opera tions. Various solvents whose vapors are heavier than air may be used,l such as benzine. benzol, and -chlorinated solvents like carbon 'tetrachlo ride, j trichloromethane, 'tetracliloronnethane,` di chlorethane, tetrachlorethane. trichlorethylene, and. tetrachlorethylene, whose vapors are un be present,~and will tend to accumulate to the point of overflowing over the upper edge of the vessel I Il.c As here shown, the vessel I9 is pro vided with heating means, such as steam coils IIV near the bottom of a work-treating “well" I2 in ’ its lower portion, forheating, vaporizing, or even boiling the liquid solvent used. The escape of solvent vapor thus or‘ otherwise present in the vessel I0 may be prevented by suitable upward extension of its walls, and by condensation oi.' the ‘ vapor from the upper part of the vessel. inilammable. The work may be treated with the ^ The lower portion of the vessel In is internally liquid solvent or with the solvent vapor, lor both; contracted to form a deep, narrow, elongated and in 'many cases, treatment with hot or even treating "well” I2 adapted to contain the sheets or vplates S to be treated, above the _heating coils 20 boiling liquid solvent is desirable. In suitable forms of embodiment, such as hereinafter de--` il.' Above the treating well I2, the interior oi 20 scribed, my invention ailords a compact and the vessel I0 expands to a greater width and eiiicient machine, wherein large quantities of work _ affords lateral vapor space open to theA well I2 can be rapidly, thoroughly, and' economically" within the vessel. >It isfnot generally necessary 25 cleaned, with small labor costs and little >loss of that such expansion be to both sides of the well solvent. Various other features and advantages I2: on the contrary, a single lateral chamber Il of. the‘inventionyill appear from `the description will ordinarily answer the purpose. The cham hereinafter of a species thereof, and from the ber I3 'ail’ords roomor space for vapor evolving drawings. ' and rising from the well I2 to spread out laterally Condensation in the upper ' In the drawings, Fig. Ils an end elevation of _ and be condensed. one preferred form of apparatus suitable for the purposes of my invention.' ` Fig. 1I shows the apparatus in cross-section as indicated by the line and arrows lI-II in Fig. III.l l » ’ 4 portion of the vessel III may be eiiected by the external atmospheric/cooling of the walls, if they are of suñicient height; though generally it is preferable to supplement or (largely) replace at mospheric cooling with more eiIective cooling 35 ' Fig. III is a side view of the apparatus from the right of Fig. I, with certain portions broken away and in vertical longitudinal section. means, so that the vesselI III need not be so deep as inere atmospheric cooling would require. '.l‘he The apparatus shown _in Figs. I, 1I, and III means-'whether internal cr external, ' and whether on one side, two or more sides, or all 40 comprises a `sheet metal treating> vessel or en particular type and arrangement of cooling > closure Il that contains the solvent, whether> around' the vessel I_II--is broadly immaterial, ex cept that the greater the extent ofthe cooling used as liquid or as vapor, and 'is closed to ex clude air and retain any solvent vapor that may 45 _be present,-purposely or ‘incidentally-but is preferably open upward, at the top, for the in troduction and removal of work. In general. worinA is treated with liquid or vaporousv solvent (or both) in the lower part of the vessel", while its upper portion servesv mainly to prevent or minimize loss of solvent vapor from the vessel, especially in drying thework after treatment with the solvent; For-when the solvent employed is highlyl volatile light gasoline or bensine:. or when the work is immersed in the solvent „while itseli‘still hot or warm; or when theìolvent is _ means perimetrlcally of the vessel, the less its extent vertically need be to give adequate exposed cooling area. The solvent vapor, being heavier 45 than air, will always lìow by gravity toward the region or area where _it is most rapidly 'cooled and condensedi--iust as ii there were anvactual outlet for the vapor at such region. As' here shown, the uppervessel walls are (externally) water jacketed at Il, preferably aroundV three sides of the chamber I3, f om a little above the top of the well I2, almost to other cooling medium) at its lower . 1 n topjof the vessel Il. The Jacket Il has inlets II, for water (or e on the aisance In l right-hand side oi' the chamber i3, and has water outlets i'i. I1, i‘i at its upper edge, at the middle of the right-hand side and at its 'upper corners on the ends of chamber i3. Thus a cool condens ing zone or region is maintained in the chamber i3, which draws the vapor rising from the well i2 aside into the chamber. ' The pure liquid solvent condensed in the cham- y bers t3 welded to the upper sides of the bottom cross-bars of the. iJ’s. The top of each U-frame di is closed by an (inverted) U-yoke 34 whose side arms rit inside the yoke arms and are se cured to them by bolts 95. The cross bars of the two outside yokes 3Q carry short (inverted) grooved channel-like members 36 welded to the lower sides off these cross bars. ,The upper and ber it by the cooling jacket i5 falls or runs down lower edges of the plates or sheets S are engaged 10 the chamber walls, and is collected and used to and held in the grooves oi' the members 33 and 10 treat the work S in well I2. As one means of 36,-the plates S being inserted and removed collecting this condensate, thechamber i3 may be `from either end of the rack 30. The rack l0 provided with a sump, well, or reservoir it at its may be supported by bails 3l, 3i connected to eyes f bottom, here shown as separated from the upper 39 attached to the upper ends of two intermedi part of the weil I2 by a dam i9 consisting4 of a ate U-frames 3i, 3i. The rack may be raised partition-like upward fold of the sheet metal - and lowered by a cable lliiwith a hook 4I for en forming the wall of the vessel it. .As shown, the top of dam i9 slopes rather gently upward away from reservoir I8 toward the crest of the dam, 20 to facilitate overñcw of drops of water ñoating gaging a link 42 interconnecting the bails 31, 21, at the surface of the solvent in reservoir I8. Such water-drops ñoat partly submerged in the solvent in reservoir 18,-'something like ice by an enclosing framework _comprising uprights bergs.-and the comparatively gentle slope of 25 the top of the dam I9 allows solvent at any time overflowing the latter to roll these water-drops up the slope and over the crest. The atmos pheric exposure of the solvent in the open vessel III naturally results in the presence of some water 30 in the solvent in wells i2 and I8. As here shown, provision is made for spraying the work S in the well i2 with liquid solvent, preferablyinstreams or sprays directed length wise of the well, or parallel with the surfaces of 35 the plates. More even distribution of the sprayed liquid may be assured by directing the sprays on the work S from both ends of the vessel I0 and well I2. For this purpose, spray devices 29, 29 may be mounted on the end walls about at the 40 top of the well I2,--with sufficient space between them, however, to leave the top of the vessel I9 open for the introduction and removal of sheets S substantially unimpeded. Each of the spray by means of overhead crane, derrick. tackle, or . any .other convenient means. . As shown; the walls of the vessel I0 are braced 20 44 which are attached to the sides of the vessel, and also form supporting legs for it. The lower ends of the legs 94 are attached to a base frame 45 of angle section.V The pump 26 and the motor 2l are mounted on an intermediate horizontal frame composed of cross angles 46 and longitudi nal angles Il. The upper edge of the vessel Il has an external rim of angles 48, and the water jacket i5 rests on horizontal angles 49 that ex-A 30 tend all the way around one side and the ends of the vessel, and brace its walls. The heating coils II are shown mounted on a side plate 5l which is removably secured over an opening in the end wall of the vessel I0, so that the coils can 35 be taken out by simply detaching this plate Il. As shown in Figs. II and III, the bottom of the well I2 slopes'downward to one end. where valved drainage outlet 5I is provided. ' Preferably the vapor and condensing chamber 40 il may normally be covered over with a cover i2. shown as a. plate secured to the rim 4l at its ends >and at >its right-hand side: this narrows the top -devices 20 comprises a. suilìcient number of spray ’ opening of the vessel I0 to an aperture directly 45 nozzles 2i (four being here shown) arranged to over the-well I2 (and of substantially correspond 45 distribute the spray fairly uniformly amongst a ing width)v permitting easy introduction andbwith- ^ batch of upright sheets slightly spaced apart, and drawal of work S. Means- of closure for 'this top opening over the well I2 may preferably be pro vided, such as a cover plate ll having its ends supported by internal angles 55 across the ends thus wash their sides thoroughly. As here shown, there are openings with removable covers 22 in 50 the end walls of the vessel I0, aiïording more con venient access to the nozzles 2i for the purpose of the vessel I0, so that it is adapted to slide. of aiming themand adjusting them to give the f under the cover $2 when not in use, as shownexact throw, spread, and flneness of spray de in Fig. II. 'Ihere is a longitudinal angle 56 under sired. For supplying purified solvent to the spray the cover plate 54, with its ends suitably secured 55. devices 20, 20, there are pipe connections 22, 24, 2l from the well or reservoir I9 to the nozzles 2i. A (rotary) pump 26, which may be driven by an (electric) motor 21, is preferably interposed between pipes 23 and 2B. A valve 28 is shown interposed in the pipe 23 leading from well Il to the suction of pump 26, to prevent undesired leakage or pumping away of solvent from the weil I8. A valved connection 29 is shown from to the ends of the vessel Il: this a`ngle 56 serves 55 to support the cover M and prevent it from sag ging, especiallywhen closed.- The cover 54 may be, normally left open as in Fig, II when the ap paratus is in use to clean work, but m‘ay be tem porarily closed at other times to minimize loss ot coI solvent vapor from the vessel Il. ~ In Figs. I and II, a narrow, deep, open-top sheet metal tank 89 is shown close alongside the vessel Il; it may contain hot oil for annealing as a meansfor keeping down the solvent level zinc, brass, copper, or other metal sheets after in well I8 if desired. v Work may be introduced into vessel Il! and well rolling. This tank S0 has electrical heating units K the well I8 through the darn I9 into the well I2, I2', and withdrawn, by any suitable means, here . shown as including a rack 39 for holding a multi plicity of plates or sheets upright and slightly spaced apart. This rack 30' is shown as includ ing a. rectangular framework including U-frames 3| of channel section interconnected at their up per ends by longitudinal angle bars 22, Aand at 75 their lower ends bygrooved channel-like mem SI in its lower portion st each end, to heat the oil to _the necessary temperature-some 600° F. for annealing zinc, for example. The general construction and mounting of tank 6I resembles 70 that of/_vessel I9. Its base frame l2 is shown as including or attached to lateral extensions “of the end anglesof the base frame Il of tank Ii; and the end angles of its top angie-rim 94 have 75 3 2,1 16,862 « lateral extensions 65 which are welded to the ad jacent carrier uprights 44 of vessel III. One mode of use and operation of the appa ratus shown in Figs. I-III is as follows: , 'I'he well I2 is ñlled with trichlorethylene >or other volatile solvent about to the level L shown in Fig. II, or somewhat higher, and sheets or other work S are placed in the well above the "liquid solvent. The solvent is continually heated II and boiled by steam supplied to the heating coils II,`and its vapor continually rises amongst and through the sheets S, and spreads out into the chamber I3. Cooling water being all the while circulated through the jacket' I5, the solvent va-. reservoir with the pure condensate; and nozzle means at a wall of said well for receiving con densate from said reservoir and spraying the work in the well therewith. ' 2. Apparatus of the character described, for treating work with volatile solvent whose vapor is heavier than air, comprising in combination an air-excluding treating vessel open at~the top for the introduction and removal of work, but in ternally narrowed, substantially below the top, lo so that its narrow lower portion forms a vapor izing and treating well for receiving the work to be treated and for containing a body of liquid solvent in its bottom, while its wider upper por por is continually condensed in the chamber I3, » tion affords a chamber above and to the side of thus continuallysupplying the sump or reservoir the well and laterally open thereto, said cham I8 with purified liquid solvent. 'I'he valve 29 may ber being provided with a solvent reservoir at be either open or closed at this time, but prefer its bottom ; a cooling jacket for the chamber wall ably open. As soon as this continual supply of maintaining in the chamber a cool condensing solvent to sump I8 is established, the pump 28 zone for drawing vapor rising from said well is started into operation to supply the liquid sol» aside into the chamber and there condensing it, vent under pressure to the nozzles 2| and spray thus supplying said reservoir with the pure con the sheets S therewith, thus washing oif all oil densate; and nozzle means at a wall of said well 'and grease from the sides of the sheets. When for receiving condensate from said reservoir and the spray has sufficiently washed ofi' the sheets spraying the: work in the well therewith. ' S, the pump 26 is stopped; but the boiling of theI 3. Apparatus of the character described, for solvent in the bottom of well I2 is continued until treating work, such as plates or sheets, with vola the sheets S warm up to the temperature of the tile solvent whose vapor is heavier than air, com hot solvent vapor in the well,---when steam may prising in combination an air-excluding treating 30 if desired be temporarily shut off from coils II. vessel open at the top’for the introduction and Thereupon the hot sheets S are slowly lifted out removal of work, but internally narrowed, sub y of the vessel I0, the solvent draining and drying stantially below the top, so that its narrow lower off from them as they rise through the upper portion forms a deep, narrow, elongated vaporlz' part of the vessel above well I2, so that they ing and treating well for receiving sheets in up 35 come'out clean and dry, and loss of solvent is sub right position and for containing a body o! liquid stantially avoided. The apparatus is now ready solvent in its bottom, while its wider upper por for another batch of sheets. ‘ tion añords a chamber above and to the side of When the solvent in the well I2 becomes so ‘contaminated with grease and dirt that cleaning 40 is necessary, thevalves at 28 and 29 are closed, the cover 53 is preferably closed, and steam is supplied to the coils II and cooling water to the jacket I5 until all (or approximately all) the sol vent is distilled over into the well or reservoir Il. The residue of dirt, grease, and solvent (if any) -in the bottom of well I2 is drawn on at BI, and the well cleaned out. The heating coils II may even be removed‘by taking oil' the plate 50 on which they are mounted, to facilitate thorough cleaning of the coils and of the bottom of the the well and laterally open thereto, said chamber being provided with a solvent reservoir at its bottom; cooling means for maintaining in said chamber a cool condensing 4zone for drawing the 40 vapor rising from said well aside into the cham ber and there condensing it, thus supplying said reservoir with the pure condensate; and nozzle means at a wall of said well receiving condensate 43 from said reservoir and spraying it amongst the ' upright sheets in streams directed substantially parallel with their surfaces. , A 4. Apparatus of the character described, for treating work, such as plates or sheets, with 50 volatile solventwhose vapor is heavier than air, comprising in combination an air-excluding treating vessel open at the top for the introduc tion and removal of work, but internally nar rowed, substantially below the top, so that its well I2. After the cleaning has been completed and the coils II, etc., replaced, the valves 2l and 29 may be opened-thus draining most of the purliied solvent back into well I2. Thereupon the apparatus is ready for operation as before. Having thus described my invention, I claim: 1. Apparatus of the character described, for treating work with volatile solvent whose _vapor is heavier than airgfomprising in comlâiation gated vaporizing and treating well for receiving sheets in upright position and for containing a` body of liquid solvent in its bottom, while its an air-excluding tre' wider upper portion aifords a chamber above and 60 ' g vessel open at the top for the introduction and removal of work, but narrow lower portion forms a deep, narrow, elon internally narrowed, substantially below the to‘p, to the side of the well and laterally open thereto, said chamber being provided with a solvent reser so that its narrow lower portion forms a Vaporiz voir at its bottom; cooling means for maintain- _ ing and treating well for receiving the work to be treated and for containing a body of liquid solvent in its bottom, while its wider upper por ing in said chamber a cool condensing zone for drawing the vapor rising from said well aside into the chamber and there condensing it, thus tion affords a chamber above and to the side of supplying said reservoir with," the pure conden the well and laterally open thereto, said chamber . sate; nozzlemeans at an end of said well for being provided with a solvent reservoir at its spraying condensate from _'said reservoir length 70 bottom: cooling means for maintainmg in said wise of the well on the upright sheets therein: 70 chamber a cool condensing zone for drawing the and means for pumping the condensate from said vapor rising from said well aside into the cham reservoir under pressure to said nozzle means. ber and there condensing it. thus Supplying said - CLARENCE F. DINLEY.