US2607288A - Cane mill - Google Patents

Description

J. J'. MuNsoN Aug. 19, 1952 CANE MILL 2 SI-IEETS-Sl'lEET l Filed May 2'?, 1946 Zzpenar JOSEPH J. MUNSON Aug. 19, 1952 Zh-venia?" JOSEPH J. MUNSON Patented Aug. 19, 1952 OFFICE MILL l Joseph I. Munson,'vH oum`a, La. t Application" Mayer, 1946,` serial 1510.167257?.

Fig. 1 is a diagrammatic view in 'elevation of` the rolls and turnplate of a' three roll cane mill in accordance with thi'sinvention;v

' Fig. 2 is a rfragmentarj'r sectional view taken.

as ,on line 2 2pf Fig. lv and showing in top plan viWportions of the feed for caneroll and the .turn'plate the turnplate being shown with a plane top surface before it is finished in accordance with this invention;v y o y. i l

' Fig. 3 is a view similar Fig.'v 2 showing the turnplate top surface finished4 accordance with this invention;

Fig. 4 is a partial vertical sectional View of the rolls and'turnplate shown in Fig. 1;

Fig. is a partial ltransverse vertical sectional view taken as on line 5--l5 f Fig; itA and Fig. 6 is'a View Ysimilar to Fig'f-- showing'a turnplate of modified constructiorn in Fig. 1 of the, drawings v ,thereyaref shown a feed or cane roll I, a top roll 2` and a dischargeor, bagasse :roll 3 arranged to constitute the-' usualA three roll mill for crushing sugar cane'supplied by :a `conveyor 1. The rolls are supported in suitable bearings for operation at the same-speed,

,the'bearings of the top roll2 being arranged.' to

permit of theA application of pressure for crushing vcane passed between the top roll 2 and the vcane and bagasse rolls. Associated' with the rolls are shown a` turnplate 4 and scrapers and 6, the turnplate serving to scrape the'adhering fibre from the ycane roll and guide all Vmaterial across under the top roll to the entrance between the top and bagasse rolls while the scrapers 5 and 6 remove the bre from the top and bagasse rolls, respectively. Where the cane roll I is formed with V-shaped girth grooving I2. as shown in the drawings, the adjacent edge of the turnplate is notched to fit the grooves and insure the removal of the fibre from the roll.

Usually in mounting the turnplate, the rear or discharge edge 4a, adjacent thebagasse roll, has been positioned so that the upper surface of the 6 claims. (ol. 10c- 166) 2 turnplate at that edge the'top 'roll 2 than the upper surface at the forward edge 4b vadjacent lthe cane roll. This arrangement has led to highk pressures between the top vroll andv the turnplate because the crushed cane was not kept in motion on the turnplate and became packed between the top roll and turnplate luntil the friction 'of the top roll on the crushed cane became sufficient to overcome the resistance to movement of the cane over the turnplate and provide the pressurenecessar'y' tor feed the crushedcane betweenn the top and bagasse rolls.

Where the cane and top rolls are-both provided with V-shaped girth grooving lthe ridges-J of lone roll are alined with the vgrooves of the other and the crushed cane, as delivered fromA these rolls lto the turnplate has the general cross-sectional shape of the opening between the grooved surfaces of these rolls. When passed onto the fiat upper surface of the usual turnplate, the ridges and grooves formed in the crushed canej'bythe grooving in the `cane roll tend to `disappear as the crushed cane is dis"- placed laterally under the friction andpressure towhich the cane is subjected duringl its passage acrossj the turnplate.`A Upon being fed to a bagass'ev roll having V-shap-ed girth lgrooving` alined with the grooving of the cane roll the crushed cane, vafter crossing the turnp'latel tightlypacks the grooves of the top roll but does not tightly pack the grooves of thebagasse roll and spaces are left at the bottomsof the grooves of this roll. With this condition and the cane subjected to considerable pressure between these v rolls; juice tends to 'ow toward thescrape'r 6 on; thefbagasise -roll instead of backward toward'the turnplateand 'clear of the out-goingbag'ass'e';`yhence -the'reis some loss of Ajuic'e" with the" b'agfass'av y i To' overcome V-shaped grooves 8 similar to :andalined with the V-shape'd-girth'grooving I2 of the feed'orcane roll I and extending between the edges 'IIbis a greater distance from the objectionable condition described the turnplate 4 is formed "with'parallel' such structure the bottoms of the grooves are formed onarcs whose centers lie in-a line parallel to the axis of` the top roll 2 and a shortdis.

tance to the left thereof as the rolls are viewed in Fig. l.

The turnplate described is used in connection-v *diminishing in depth towards the discharge edge with a top roll having a longitudinal grooving 9* cut across the V-shaped girth grooving I6 and, 5 providing teeth l which engage with the cana Such engagement insures the movement *of -t-he rcane Vacross the turnplate at the peripheral El..

speed of the top roll 2 and insures the feeding of the cane to the top and bagasse rolls without any tendency for the' cane to pack between the top roll and tin'nplate. The turnplate being grooved in alignment with the cane andl bagasse rolls, the cane as it passes across the turnplate is held in theshape given it as it passes between thecane and top rolls and there is no possibility of the cane being redistributed so that the cane is shaped to ll the grooves of `the bagasse roll as well as those of the toproll thus' causing the juice extracted by the top and bagasse rolls` tofbe dir'ected'back towards the turnplate and not carried off in the haga-sse..

The turnplate, having the same axis of curvature'as ,the .top roll,` can beset close to the,r top roll while the longitudinal grooving offthe top roll, by causing the continuous movement of Vthe canflnsures a much lower pressure than is usu-l ally` established between the top roll andthe turnplate thus increasing the effective pressure applied to the .cane between the top roll and the cane .and bagasse rolls. Where the depth of the turnplate grooves is gradually lessened, `as inthe construction shown in Fig. 6, a slightly increased pressure is applied to the cane at thedischarge edge of the turnplate due to the decreased .cross-t sectional area, thus preventing any absorptionI of thejuice at this point and helping to insure theH continuous movement of the cane.

Modications within the scope of, my invention will occunto Vthose skilled in the art; Therefore. I do not Vlimit it to the-exact form of the parts as illustrated and described.

What is .claimed is:

1 In a cane mill vhaving Vgrooved top andca-ne rolls, said cane roll having parallel V-shaped girth-growing, a turnplate having Van uppersurf facecoaxialwith said-top roll, paralleli/shaped grooves in saidfupper surface. alinedwith .each

of similar grooves of said cane roll and having the groove bottoms lying in arcs coaxially with the axisof said top roll. A Y

VVIn a cane mill having grooved top and cane rolls; said cane roll Yhaving parallel -Vfshaped girth grooving, a turnplate having an upper sur- `grooves in said upper surface alined with each ef said grooves of said cane roll and progressively of-saidplate.

4. Ina cane mill, a cane roll having girth grooving, a--to-p roll having girth and longitudi- `nal groovings forming teeth, and a turnplate with a concave arcuate surface having parallel grooves extending across the surface over which the cane moves, and' each of said lgrooves inthe turnplate alined individually with each of similar grooves of Vsaid cane 'roll' and cooperating with said teeth on said` top rollin the movement of cane across said turmslate.r

5.111 a cane m11; having'groove'd can@l and top rolls, said cane roll having parallel V-shaped.

girth grooving, a turnplate having V-shaped parallel grooves alined with each of said grooves of said-.cane roll, said turnplate having its upper surface coaxial with said top roll, said grooves in cooperation' with the top roll vforming a passage of less cross-sectional area atV the rear edge of said plate than at the forward edge.

`6. In a cane mill .having a top roll, a caneroll having V-shaped girth grooving, aturnplate havmg a concave surface cooperating with the surface 'of .theltop roll'between"which surfaces theV cane moves' under" pressure, said turnplate having parallel V-shaped 'grooves across said concave surface from the'feeding edgeto the discharge edge alined individually with each of said grooves of the cane" roll and preventing Yre'distribution of material actedV upon by said rolls.

JOSEPH Munsoivj VVR irren-111151c11's Voir-ED v The following yreferences are of record in the Menzl Mar. l1, 1947

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