Патент USA US2412099код для вставки
Patented‘ Dec, 3. i946 ' UNITED STATES I_ PATENT‘ - oF'F-ics Leopold Sender, Baltimore, Md., assignor to The Sharples Corporation, Philadelphia, Pa” a cor- - notation of Delaware Application June 24,1943, Serial No. 492,153 2 Claims. (01. 233-14) 1 . 2 ' The present invention pertains to a centrifuge designed to effect centrifugation and discharge of a viscous material, so as to effect-satisfactory discharge of the viscous material after ejection thereof from surfaces surrounding the centrifugal rotor. It was conceived in'connection with re- . _ search involving separation of soap from an aqueous phase in practice of the process of the patents to Scott, 2,300,749 and 2,300,750, and will be described speci?cally with respect to problems involved in practice of such a process. The 'spe ci?c nature of the invention and the advantages attained by practice thereof will be ,evident from consideration of the following detailed description by that arrow. Soap which may fall from this ‘upper surface .on to the lower surface 20 also has a tendency to stick to thatvlower surface, and the present invention is concerned with an ar rangement preventing stickage to either of these surfaces. " ' In connection with many types of soap e?luents' obtained in continuous soap manufacture by the process of Scott patents, 2,300,749 and’2,300,750, the problem of stickage may be solved by injec tion of water or saponifying reagent into the covers as taught in those patents, by the use of devices of the prior art for injection of a spray of washing liquid into the soap-receiving cover.v in connection with the attached-drawing, -'in 15 'Thus, for example, a spray of liquid may be in-‘ which, ' I - . The single ?gure is a view partly in cross sec tion and partly in side elevation of the centrifugal jected into the covers as illustrated and described in the prior patent to Jones 1,634,243, and such injection is often adequate to prevent stickage. 7 In connection with certain very viscous soap e?iu Referring to the drawing by reference charac 20 ents,‘ however, the problem of stickage has been ters, the centrifuge of the invention includes a troublesome even in cases in which the best avail rotor ill of which only the upper portion is illus able means of the prior art were employed in trated. This rotor is designed for securement injection of washing liquid into the soap-receiv to a drive spindle (not shown) through a vdrive ing cover. The present invention is especially connection II at the upper end of the neck I! directed to‘"solution of the problemof stickage separator of the invention. of the rotor. This neck is provided with a dis-' charge passage l3 through which the heavier effluent ?ows from the rotor and is discharged involved in treatment of soaps which are so tacky as to present such a problem. ' The problem of prevention of stickage to the through outlet I4, and with a discharge passage - surface 20 is solved in the practice of the present l5 through which the lighter e?luent flows from 30 invention by projecting a body of liquid from the the rotor and is discharged at It. ' The heavier annulus 2| against a portion of the surface 20 e?iuent ?ows from discharge outlet I4 into a indicated by the arrows A’, this liquid being pro receiving cover I1 and the lighter e?iuent ?ows jected against the surface 20 from a plurality from discharge outlet (it into receiving cover [8. I of points around the circumference of the an The features of they centrifuge described above 35 nulus 2i in sufficient volume to form a layer of liquid ?owing continuously outwardly along the _ are of more or less conventional design and form ‘ conical surface 20 from the zone of impingement no part of the present invention.“ When a mix-, ture of soap and aqueous phase is subjected to A’ of the washing liquid. By maintaining a con centrifugation in the rotor III, the soap will be tinuously ?owing layer of liquid along the surface discharged through the passage i5 and outlet [6,, 20 from a zone within the innermost zone at while the aqueous phase is discharged through which soap is projected or falls upon that surface, the passage I 3 and outlet H. No particular the soap is adequately prevented from sticking to the surface 20 and is washed downwardly trouble is encountered in removal of aqueous phase from the cover I‘! in such‘ case, since this through the space S to a, discharge conduit. aqueous phase (the reagent solution) is a free 45 In conjunction with the above-described ar rangement for preventing stickage of soap to the > flowing material, but considerable dimculty has . been encountered in connection with discharge surface 20, special means are ‘provided for pre venting stickage to the upper surface l9. These of soap from the cover l8, the soap tending to stick both to the upper surface l9 and the'lower last-mentioned means include an annulus 2‘! pro surface 20 of that cover. Soap discharged from 50 vided. with a plurality of circumferentially spaced the outlet l6 passes tangentially from that outlet nozzles adapted to project liquid against the upper surface of a ring 23 which is secured to and strikes the under surface I!) of the lower cover in the general zone indicated by the arrows the‘ centrifugal rotor above the light liquid dis A, and has a tendency to stick to this upper sur charge'outlet I 6. In the form of the invention face adjacent the zone of impingement indicated 55 illustrated, the ring 23 constitutes a ?ange upon 2,412,099 .1 H - 3 . . . 4 v p the scope of the invention by the person skilled a’ sleeve 24 surrounding the neck of the rotor. Liquid projected through the nozzles in annulus 22 against the upper surface of the ring 23 is thrown tangentially outward by this ring alas the result of centrifugal force caused by rotation of the ring with the rotor. This causes the liquid . in the art, and I donut therefore wish to be limited except by the‘ scope of the following claims. , I claim: . > 1. In a centrifugal separator, the combination comprising a centrifugal rotor‘designed to dis charge a viscous e?luent centrifugally against an upper surface of a, non-rotating receiving cover, against that surface which might otherwise stick thereto. Soap loosenedin this manner‘ which 10 and means to project a washing liquid from a portion of said rotor centrifugally in a direction falls or is de?ected against the surface 20 is to be projected against the surface I! with a swirling motion and to remove soap discharged diluted with the liquid projected from the ring , - 23, and this dilution tends to make the soap more v?uid‘ and cause it to flow downwardly along sur- 5 face Zll, and the provision of a continuously flow ~15 mg layer of washing liquid (e. g., water or aqueous reagent) along this lower surface from the zone A’ of impingement of this washing liquid from the annulus 2| precludes stickage of this soaplto the surface 20. Thus, .by eifecting impingement of washing liquid against the surface Min 97 zone within ‘the ‘innermost zone of impact of soap having substantial circumferential and outward components against said surface of said receiving cover at a zone within the innermost zone of dischargeof said viscous ef?uent against-said sur face, whereby to effect swirling movement Of said I washing liquid across said surface against which ‘the viscous effluent ‘is discharged, and thereby prevent stickage of said effluent to said surface 20 and cause said effluent to be discharged to a lower surface of said cover, and means for estab ‘ lishing a continuously downwardly and outward against that surface, stickage to the surface i9 is prevented, while by establishing a ?owing layer of washing liquid from the zone A’ outwardly‘ 25 along the surface‘ 20, stickage of the soap to the surface 20 is prevented. 'While the arrangement for establishing a ?ow. ing layer of water from the annulus 2| along’ the surface 20 is particularly useful in connection 30 with the arrangement for projecting liquid tan gentially from the ring 23 as described, either of , 1y ?owing layer of washing liquid from a zone within the innermost zone of discharge of said eiiluent against said lower surface ?owing across said zone of discharge against said lower surface, whereby to prevent stickage of said effluent to said lower surface. 2. In a centrifugal separator, the combination comprising a centrifugal rotor designed to dis charge a viscous e?iuent centrifugally against an upper surface of a non-rotating receiving cover, ‘ and a centrifugal flinger secured tosaid rotor and, these arrangements may be employed to advan designed to centrifugally project a washing-liq tage in the absence of the other.’ For example, uid ina direction having substantial circumferen 35 ‘in many cases, projection of liquid from the ring tial and outward components against said sur 1 23 will serve to prevent. stickage of soap to the face of said receiving cover at a zone within the surface l9, and the consequent dilution of this innermost zone of discharge of said viscous ef ' soap will prevent stickage to the surface 20. On ?uent against said surface, whereby to effect the other hand, in some cases it is possible to movement'of said washing liquid across solve the problem of stickage by provision of the 40 swirling said surface against which the viscous effluent is‘ layer established by projecting liquid to the zone discharged,’ and thereby prevent stickage of said . ‘A’ from the annulus 2|, without provision of the special means provided bylthe ring 23 for remov ing soap from ‘the surface l9. Various modifications may be adopted within 45 effluent to said surface. ' vLE‘OPOLJJ SENDER.