Патент USA US2119006код для вставки
May 31, 1938. F. D. CHAPMAN HYDRAULIC CORN SILKER Filed Sept. 25, 14936 _ 2,119,006 ' 2 Sheets-Sheet 1 INVENTOR. ATTORNEY§ - May 31, 1938. F. D‘ CHAPMAN HYDRAULIC CORN SILKER Filed Sept. 23, 1956 /9 x‘ “mm. BY 6% I 2,119,006 ' 2 Sheets-Sheet 2 INVENTOR. W Patented May 31, 1938 2,119,006 UNITED STATES ‘ PATENT OFFlCE 2,119,006 HYDRAULIC CORN SILKER Frank D‘. Chapman, Berlin, Wis. Application September 23, 1936, Serial No. 102,106 4 Claims. (Cl. 209-156) My present invention relates generally to im provements in the art of hydraulically separat ing materials having dilferent speci?c gravity, and relates more speci?cally to an improved sys ‘5 tem for removing silk and fragments of husk from whole grain corn after the latter has been re leased from the cobs. Generally de?ned, an object of my present in vention is to provide an improved corn silking 10 system which is simple in construction, yet highly efficient and automatic in operation. In my prior application Serial No. 34,740, ?led August 5, 1935, I have shown and described an improved hydraulic transporting system for leg '15 reference characters designate the same or simi lar parts in the various views. Fig. l is a somewhat diagrammatic top view _. of one of my improved corn silking systems, with the supply chute omitted; Fig. 2 is a similar side elevation of the assem blage shown in Fig. 1; umes such as peas or the like, wherein the con Fig. 3 is an enlarged vertical section through ,_ the liquid supply and silk removing portion of ‘ veying liquid is delivered over an annular dam to the inlet side of a transporting pump, and the solids are deposited within the dam and are mixed with the liquid as it flows toward the pump lar line 3-3 of Fig. 1; . 20 inlet, the mixture being subsequently forced through a conducting pipe or conduit. The basin for supplying the liquid to the annular dam, is quite extensive and has large surface area, and it has been found in actual omration that when 25 the pump is operating at a desirable speed for conveying purposes, the surface liquid in the basin travels quite rapidly and has su?icient sur face tension to sustain material such as corn silk and fragments of husk having relatively light 30 weight, for a considerable length of time. It is therefore a more speci?c object of the present invention, to provide an improved system involving some of the principles of my prior hy draulic conveyor, for effectively removing silk 35 and fragments or pieces of husk, from seed such as corn kernels. Another speci?c object of my present invention is to provide a new and useful hydraulic corn~ silker which eliminates necessity of providing 40 movable tines and other complicated and un sanitary mechanisms such as are customarily employed in silking apparatus. A further speci?c ‘object of my present inven tion is to provide a combined corn silking, wash ing and conveying system which simultaneously performs all three of these functions in a most effective and sanitary manner. Still another speci?c object of my present .in vention is the provision of a corn silking system which is thoroughly reliable and automatic in operation, and which is operable with minimum power and may be readily converted to other uses. These and other speci?c objects and advan oi Ul A clear conception of an embodiment of the several improved features constituting the pres ent invention, and of the mode of operating the improved corn silking system, may be had by referring to the drawings accompanying and forming a part of this speci?cation wherein like tages will be apparent from the following detailed description. the improved apparatus, taken along the irregu Fig. 4 is a similarly enlarged transverse verti cal section through the same portion of the as- _ semblage, taken along the irregular line 4-—4 of ' Fig. 1; Fig. 5 is a likewise enlarged side elevation look ing toward the silk removing portion of the ap paratus; and Fig. 6 is a further enlarged somewhat diagram- 1' 5 matic section similar to that of Fig. 4, showing the normal action of the improved separating device. While the invention has been shown and de scribedherein as being applied speci?cally in a system for effecting the removal of silk and husk particles from whole grain corn, it is not the in tent to thereby unnecessarily restrict the scope. Referring to the drawings, the improved hy draulic separating and conveying system shown therein by way of illustration, comprises in gen eral a rotary trash pump 8 having an axially di rected horizontal inlet in open communication with the lower constricted end of a vertical fun nel 9 and also having an upwardly directed pe ripheral discharge communicating directly with an elongated conveying conduit 10; a rather ex tensive and relatively shallow liquid supply basin H for delivering liquid such as water into the upper open end of the funnel 9 over an annular 45 ridge or dam l2; a mixed material supply chute I3 for depositing a mixture of corn silk and ker nels by gravity into the basin ll above the fun nel 9; an adjustable silk and husk fragment re moving weir l4 associated with a wall of the basin 50 I I closely adjacent to the funnel 9; a rotary rela tively coarse screen l5 for receiving the mixture of conveying liquid and corn from the discharge end of the transporting conduit l0‘ and for sub jecting the corn to a washing or rinsing action 55 2 2,119,006 prior to removal thereof from the conveying liq uid; a return pipe l6 for conducting the rinsing and conveying liquid toward the basin H ; and to control the normal ?ow over the silk separat a rotary relatively ?ne separating screen ll for draulic conveyor and corn silk remover, the sys ?nally removing silk and other debris from the liquid prior to ?nal return thereof to the basin I l. tem is being supplied with fresh liquid, when nec essary, through the supply pipe 20, and with regulated quantities of fresh liquid through the spray pipe 23, and the pump 8 is operating to continuously remove liquid from the basin H The rotor of the pump 8 may be driven from any suitable source of power such as a motor [8 which may also be drivingly connected to the ing weir 14. During normal operation of the improved hy 10 screens I5, I? in a well known manner, and this ' over the dam l2 and through the funnel 9, and 10 pump is preferably of the open impeller type having large, smooth and unobstructed passages which will not damage the corn and will not clog readily. The axial pump inlet is also free from 15 obstructions, and the cone or funnel 9 may either be free from obstructions as shown, or may be provided with whirl preventing radial vanes along The level of the liquid within the enlarged supply basin I l is pref 20 erably maintained well above the crest of the r the inclined surface thereof. dam l2 as shown in Figs. 3, 4 and 6 by means of the vertically adjustable weir l4, and the basin ll may be provided with a side chute [9 for re ceiving the spillage liquid and separated silk de 25 livered over the weir I4. The tank or basin H is also provided with a ?oat controlled fresh wa ter supply pipe 20 preferably located some dis tance away from the funnel 9, and has a drain pipe 2i at the lowest portion thereof for effect 30 ing complete removal of the liquid when the sys tem is inactive. During such drainage, the nor mally upright external end of the pipe 2| may be swung downwardly beyond horizontal posi tion about the common horizontal axis of the 35 two lower elbows, thus permitting complete drain age in an obvious manner. The pump discharge and the conveying con duit 10 are also internally smooth and free from obstructions, and the upper coarse screen I5 with 40 in which the transporting pipe terminates, is ro~ tatably supported in slightly inclined condition, by means of roller supports 22. The screen I5 is revolvable in any suitable manner to cause the admitted solids to roll across and along the 45 bottom thereof, and a stationary spray pipe 23 extends along the interior of this screen above the rolling material and serves to constantly pre cipitate fresh rinsing liquid over the solids. The lower end of the inclined screen 15 is open and 50 communicates with a chute 24 for receiving the ' washed solids or corn, and the conveying and rinsing liquid which passes through the screen drops into a receptacle 25 disposed directly be neath the screen IS. 55 The upper end of the liquid return pipe l6 com municates directly with the lower end of the re ceptacle 25, and the opposite lower end thereof communicates with the interior of the lower ?ne screen I‘! which is revolvably mounted upon sup 60 porting rollers 26 and may be driven in any con venient manner. The interior of the lower screen as shown in Fig. 3, is provided with a helical flight 21 and with elevating vanes 28 at the delivery end of the flight 21. The flight 21 is formed to 65 automatically convey any corn silk or debris which has passed through the pump 8 and which has been removed from the corn kernels in the screen 15, toward the end vanes 28 when the screen ll revolves; and the vanes 28 are formed to collect, 70 elevate and deliver these particles through an end discharge cone 29 upon a delivery chute 39. The separated clean liquid which passes through the screen i‘! drops directly into the basin H and the fresh liquid admitted to the circulating system from the spray pipe 23 may be regulated forces this liquid through the conveyingconduit H3 into the upper revolving screen i5. The mix ture of corn and silk is being delivered.- along the supply chute l3 and drops by gravity into the basin H directly above the funnel 9 as illustrat 15 ed in Fig. 6. As this mixture is deposited upon the surface of the liquid in the basin l I, it causes a turbulence and the corn kernels drop through the liquid and are mixed therewith and conveyed to the pump 8 through the funnel 9. The lighter 20 particles of silk and pieces of corn husk which are unable to break the surface tension of the liquid in the basin H, are carried by the con stantly flowing stream of excess liquid directly over the weir l4 and are discharged along the chute I9. 25 Thus, particles of corn silk and debris “ which succeeded in passing to the pump with the corn kernels, are subsequently transported through the pipe 10 and are delivered into the re— volving screen I5. Here the kernels of corn are given a thorough rinsing by the spray delivered by the pipe 23, and the residual silk particles are washed therefrom and pass into the reservoir 25 with the separated liquid. The ?nally washed 55:0 corn is discharged over the chute 24 at the end 35 of the incline drum l5, and the separated liquid " together with the debris, is delivered into the lower screen I‘! where the residual corn silk and debris are removed and discharged over the chute 30. The separated liquid which drops from the 40 lower screen I‘! replenishes the supply of liquid in the basin 5 I and is ultimately recirculated or discharged over the weir 14. In this manner, it will be apparent, that the silk ?bers and the lighter particles of corn husk are effectively re P15 moved from the whole grain corn, the corn ker nels being automatically removed and conveyed to the upper screen l5 from whence they may be delivered to any convenient point. From the foregoing description it will be ob vious that the present invention provides an improved corn silk removing system and corn washing system, which is highly effective and automatic in its operation. The aparatus is moreover readily accessible for inspection and 1.55 cleaning, at all times, and when the pump 8 is stopped, the liquid may be readily removed from the system for cleaning purposes. It has beenfound, in actual practice, that surface ten sion of the liquid in the relatively large basin ll, v6.0 effectively removes the major portion of the corn silk ?bers before the kernels are delivered to the hydraulic conveying system, and that substan tially all of the silk is ultimately removed from the corn in the upper screen 15. By recirculat .65 ing the liquid separated from the corn in the screen Hi, the apparatus may be operated with minimum waste of liquid, and the head of liquid within the basin H may be readily varied by merely adjusting the weir l4 and by controlling the admission of liquid through the pipe 23. The system is not only extremely simple in its gen eral assemblage, but may also be used merely for hydraulic washing and conveying purposes, by merely elevating the weir l4 and by adjusting 2,119,006 the drain pipe 2| to serve as an over?ow for maintaining proper level of the liquid in the basin l8. The improved system has proven highly ef ?cient in actual use and can be installed and operated at moderate cost. It should be understood that it is not desired to limit this invention to the exact details of construction and to the precise mode of opera tion herein shown and described, for various modi?cations within the scope of the claims may occur to persons skilled in the art. I claim:— 1. A hydraulic corn silking system comprising, means forming a liquid basin having extensive surface area, a wier providing a restricted liquid over?ow at one side of said basin, means for ad mitting fresh liquid to a widened portion of said basin remote from said wier to produce rapidly increasing ?ow of surface liquid fro-m said basin toward said wier, an upwardly diverging cone communicating with said basin between said liquid admission means and said wier and be» neath the rapidly ?owing surface liquid passing over said wier, means for delivering mixed silk and corn into said surface liquid directly above said cone and adjacent to said wier, and means for constantly withdrawing a mixture of liquid and corn from the bottom of said cone. 2. A hydraulic corn silking system comprising, 3O means forming a shallow liquid basin having ex tensive surface area, a wier providing a restricted over?ow for surface liquid delivered from said basin, means for admitting fresh liquid to said basin remote from said wier to produce rapidly increasing ?ow of surface liquid from said basin as said liquid approaches said wier, an upward ly open downwardly diverging cone communi cating with said basin adjacent to said wier and remote from said liquid admission means, means 40 for depositing mixed silk and corn upon said rapidly advancing surface liquid directly above 3 said cone, and means for constantly withdrawing a mixture of liquid and corn from the constrict ed end of said cone. 3. A hydraulic corn silking system comprising, means forming a liquid basin having extensive surface area, a wier providing a restricted liquid over?ow at one side of said basin, means for ad mitting fresh liquid to a widened portion of said basin remote from said wier to produce rapidly increasing flow of surface liquid from said 10 basin toward said wier, an upwardly diverging cone communicating with said basin between said liquid admission means and said wier and beneath the rapidly ?owing surface liquid pass ing over said wier, said cone having an annular 15 wall extending upwardly therefrom into said basin and toward said surface liquid, means for delivering mixed silk and corn into said surface liquid centrally within said wall directly above said cone and adjacent to said wier, and means 20 for removing a mixture of liquid and corn from the lower portion of said cone. 4. A hydraulic corn silking system comprising, means forming a shallow liquid basin having ex tensive surface area, a wicr providing a restrict 25 ed over?ow for surface liquid delivered from said basin, means for admitting fresh liquid to said basin remote from said wier to‘ produce rapidly increasing ?ow of surface liquid from said basin as said liquid approaches said wier, an upwardly 30 open downwardly diverging cone communicating with said basin adjacent to-said wier and remote from said liquid admission means, said cone hav ing an annular wall extending upwardly there from into said basin and toward said surface 35 liquid, means for‘depositing mixed silk and corn upon said rapidly advancing surface liquid with in said wall and directly above said cone. and means for constantly removing liquid and corn from. the lower portion of said cone. 40 FRANK D. CHAPMAN.