US2513413A

US2513413A - Rod mill

Info

Publication number: US2513413A
Application number: US105739A
Authority: US
Inventors: Kalman Z Huszar
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-07-20
Filing date: 1949-07-20
Publication date: 1950-07-04
Anticipated expiration: 1967-07-04

Description

K. Z. HUSZAR July 4, 1950 ROD MILL Filed July 20, 1949 INVENTOR. AHLMd/Y Z M8216? QZZIW *dl uv ATTORNEYS.

Patented July 4, 1950 UNITED STATES PATENT omce j ROD MILL Kaiman z. Huszar, North Indian Hill, Ohio 7 Application July 20', 1949, Serial No. 105,739

My invention relates to an improved rod mill for crushin pulverizing or mixing materials such as dye, face powder or the like.

A principal object of my invention is to provide novel means for at one time aiding in the recirculation of material within the rod mill, and at another time to aid in the discharge of such material from the mill.

Another object of my invention is to provide means for recirculating material within the mill, and also fordischarging such material from the mill, which means may be fixed to the rod mill, said means not requiring further adjustment or interchanging of parts. I A further object of my invention is to provide improved recirculation and discharge means for handling moist or sluggish material.

Still another object of my invention is to provide a combination recirculation and discharge means for rod mills which is easy to 13 Claims. (CL 241 -171) manufacture and easy to use, thus resulting in a Figure 2 is an end elevation of my improved rod mill as seen from the left of Figure 1; a

Figure 3 is a section on the line 33 of Figure 2; Figure 4 is a sectiontaken on the line 4-4 of Figure 2;

Figure 5 is a view similar to that of Figure 2 but showing the 4 device in its recirculation operation;

Figure 6 is a view similar to that of Figures 5 2 pulverizing units indicated at It in Figures 3 and 4, and it is also provided with an opening by means of which the mill may be charged with material to be ground and mixed. As shown in Figure 1' this opening .is provided with a con-:1 ventional, removable cover member l-l.

Fixed'at one end of the rod mill I0 is a rim gear l8. A driving pinion l9 carried by a shaft 2i] meshes with the gear l8 and thereby serves todrive the mill ID. .A pinion and shaft Iii-20 are driven by means ofra suitable motor indicated at 2!, conventional coupling being made to astandard variable. speed and reversing unit. indicated generally at '22. 1

[As best seen in Figures 3 and-4 the left end 0 the mill I0 is provided .with a closure plate 23. A pair of openings 24 and 2 5 are provided in the sidewalls of the mill [0 adjacent the closure plate 23'. The closure plate 23 is provided with a centrally located opening 26.

Fixed to the mill in is a recirculation and discharge conduit means which may comprise a pairof. radially disposed

housings

21 and 28 joinedutogether by a suitable section 29. This arrangement may, ofcourse, be varied; e. g., the

v housings may be joined together directly, or even formed of one integral unit. These housings comprise generally U-shaped units having their side walls fixed to the plate, 23 and having end flanges 30 and 3| which may be welded or otherwise secured tothe outer wall of the rod mill l0.

As best seen in Figures 3 and 4, the openings 2.4

and 25 are located .between the closure plate 23 and the juncture of the mill 10 with the flanges 30.,and 3|, these openings and flanges-thus comprising -,communicating passages between the

housings

21 and 28 and the rod mill I0.

and 2, but showing the device in its discharge parts. The

housing sections

21, 28, and 29 are operation, and

, Figure '7 is a view generally similar to Figure 5 but depicting further modifications of my invention.

Referring first to Figure 1, there is indicated at I!) a rod mill which is rotatably supported in a bearing II and standard I2 at its one end, and which is supported at its other end by means of a pair of rollers 13, said rod mill being provided with a metal strip or the like H! for this purpose. The standard I2 and rollers I3 may be supported in any suitable manner from a base structure generally indicated at I5. The mill I0 is provided with a plurality of conventional rods or As best, seen in Figures 2 and 4, a baflle-or separator. plate 32 is fixed to, the closureplate 23 so that it extends longitudinally of the house,

ings 21', 28 anddividesthe opening 26 into two so formed as to provide an opening 33 corre-. sponding to the opening 26 and located just op-. posite it, as best seen in Figure .3. The baflie 32 just. nicely fits between the closure plate 23 and the outer walls of housings '21 and 28. This bafiie is of sufiicient lengthtoextend beyond the

openings

26 and 33 and into the

housings

21 and 28. i, As best seen in Figures 2 ,andei, apair of guide plates. 34 and 35 arefixecl at their one longitudinal edge to the baffle 32 and at their other such edge be discharged from the: mill.

3 of the housings 21-28. Thus it will be seen in Figure 4 that the guide plate 35 extends from the plate 23, at the upper edgeof the opening 26, to the juncture of the

housings

28 and 29, the lower edge of the opening 33. Similarly the guide plate 34 extends from the plate 23 at the lower edge of the opening 26, to the juncture of the

housing members

21 and 29, the upperedge of the opening 33, Thesemembers 34 and 35 are thus located on either side of the baffle 32 in sucha manner as to form a cross or X when viewed in cross-section as seen in Figure 4. Any suitable discharge device may be attached to the above described conduit means by means of the ring member 36 which is fixed thereto.

The operation of my device will now be described. Material which is pulverized or othersome of these arrows being shown in dotted lines to thus indicate material which is within the housing and the other of such arrows being in solid lines, indicating that the material has emerged into sight as seen in that figure, and as would be the case when it is discharged from the mill I0. In similar manner continual counterclockwise rotation of the rod mill I will bring the housing 2:! to that :position', indicated for the housing 28 in Figure '"6. 1 Thus", material will be discharged from the rod mill l0, through the 1 'opening 24, into the housing 21 and will be car- ,ried by the bottom of the housing 21 and then by the side body wall of such housing until such time'that the material will fall by gravity v between the b dy Wallof the housing 21 and wise mixed in the rod mill I0 isdischarged! through the openings Miand 25 into the conduit means, the rod mill being: rotated. in either one direction or the other. Considering Figure and assuming clockwise rotation ofv the rod mill Ill as viewed in that figure, and: asindigated by the arrow 31, there is shown mywdevice when used; to recirculate the material discharged from. the rod mill [0 into the housings 21- and 28. When the IOdi mill Ill is. inthe position shown in Figure 3 materialis discharged from the mill L0, through the passageway and into thehousing 28. As

themill I 0' continuestclockwiserotation, the housing 28 moves upto the position shown in Figure .5.

I the housing'28 moves. from the position oi Figure 3 to that of Figure 5', thelmaterial which hasscollected in the bottom of the housing gradually shifts in position so that it is carried-by the such body wall and thebafile 32 and will fall upon theguide plate S5andbedirectedback into the rod mill Ill through that portion of the open.- ing 26 which cooperates withi therguidelplatei35, I have indicatedthe path. of travelof such material by the .dottedarrows in the Figure 5. It

will bereadily observed from this last mentioned figure. that as thehousingiZL follows thehousing 28 inclockwise direction, material discharged from the opening 24 into the housing 2:L-will be carried by thev bottom of -this housing and later byv its side wall, to such position that this ma- 1 terial will fall down between the body wall of thehousing 21 and the baflle 32 in the same manner as has just been described in connection with i the housing 28, Thus this materialwill tall upon the guide plate 34 and likewise be directed back 1 into the rod mill l0. 1

When it has been determined that further mixing is no longer desired, but'ratheri that it is desired to discharge the now pulverized and I mixed material'from themill I0, the direction of rotation of the mill isreversed. By this simple 1 expedient of changing thedirection of rotation of the rod mill l0, the pulverized material will of Figure 6 will show thisto be true. Thus as the material is discharged fromthe mill land into the passage 25 and into the housing 28, such material is carried by the bottom of the housing An examination 1,

28, and later itsside walls; until the housing The path of such material is Parts WhiQh. must the "b'aflle 32; This falling material will strike the guide plate 34 and be discharged through that portion of the opening 33 which cooperates with he gu delant V 7 It houl he noted that l have p ov ded a simple dev sebr me ns'qf hi h mate ia m e e h i char ed. r mz ie rod mi l fo ircula ed kinto the rol ini l'. l lby thesi mi ex ed e i so h dire i n. o r tatiqn 9i h smii -n Such g r n em n m y e a ly a cheaply edandi is one which saves a r at deal o t me hatthere uan be in erchan ed or a u ted v .ziwh rom the ecir ulati n qp aiipn we? r q era on, a 7

Re errin n w.- :tQFLgllrg 7, here is shown modifications of the basic invention which I-have inst qe qr bs l, Que ithe e -fioations is a lhesi ewallsiai th mus ngs J21. and-2.8. may be of arcuate shape .lrliarefonndthat inst b8 mi in o moi or lu ish materials there is a te den fo .l1.0.1-. -.m ter to. be carried too a fo e ropnin by nayitybetwceenith side wall o the hous n s, and-the :baflle plate. 32. If however, I ,fqrm ,-the housing as indicated in Figure '7, such material will start its downward movement an earlienpoint :in its ro ion. A comparison f llli ll tes, 7 andwfiwill showthat thi i l arly-V sosIt should-be observed, how.- e lg ll fi a hough Lam aiblehtor start the-ma: terial to fall sooner means of the arcuate V shaped housing members, I do so at a sacrifice of the velocity oi drop. oaths material ascompared to that obtained by-the use of the straight s d, u ing members shownvin Figure 5'.

Another; modification of my. invention is also, shown in Figure and this. is, the fact that the bafiie 32 does-not have to be located so that'it bisects the housings 2'! and 28 as is shown in Figure 5 for example. Thus this baffle 32 may be positioned in a slant position, or, similarly it may be curved as is shown in Figure This allows more room between -,.the2side malls of the housing and the bafiie plate, i. erit provides a larger passage in which the material may drop back into the mill in, thatishclockwise rotation of the rod mill H1. .By :the same token, how ever, this will allow less room between-the side wall members ofthe housings Z'l-aand 23 and the bafilet32 vwhen the mill is rotatedicounter-clocke wise inthe discharge operation. In spite. of this latter fact, however, .suchan ,arrangement is valuable becauseas a practical matterz-it is roommonly the practice to rotate thero'd mill at much higher speeds duringflthe' recirculation opera tion'than are used duringthe discharge operation. It is therefore better to have a greater passageway for the material to' f ollow in i e-entering the mill [0. The reason for this is that greater speeds of rotation of the rod mill will tend to cause the material to be carried farther around the p'ath of rotation before it will be'caused to drop by gravity through-the passageways pro vided. Since the speeds 'ofrotationfor'the discharge operation are. slower, there is not this tendency for the material to be carried too far, and therefore it is not necessary that there be such, a wide channel. Although I have shown both of these modifications, that is the curvedsided housings and the slanted 'or curved baflie as combined in the sameunit, it should be noted that neither one of these improvements may be incorporated in the basic invention shown in Figures 1 to 6. By that I mean it is obviousthat the'straight-

sided housings

21 and 28 could be used in connection with a curved or slanted baflle 32 and it is equally obvious that the curved-

sided housings

21 and 28 could be used in connection with a baffle 32 located in such position asshown in any of the Figures 1 to 6, rather than the curved or slanted baffle of Figure 7.

Changes and modifications may be made in my device without departing from the spirit of my invention, and I do not intend to be limited to the specific structure "shown except. insofar as is set forth in the subjoined'claims. In this connection it should be noted that my invention maybe easily adapted to use as a toy or the like by building it in miniature. The value of such adaptation lies in that my rod mill provides extremely uniform mixing coupled with easy discharge, such combination of features making my device particularly desirable for use in mixing together a plurality of numbered balls or the like and then discharging them in random order. It is thus to be understood that such adaptationand all others embodying the use of the structural features developed by me, whether such features be made in miniature or full sizeis distinctly within the scope and spirit of my invention as herein shown, described and claimed.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In combination with a pulverizing mill including a rotatable body formed with a cylindrical side wall and opposed end walls, conduit means comprising an outermost wall and side walls, said means being fixed to said mill adjacent one of said end walls, passage means located in said cylindrical side Wall for directing material from within said mill into said conduit means, said one end wall being provided with a centrally located opening, a baflle extending between said one end wall and the outermost Wall of said conduit means, said outermost wall being provided with an opening substantially registering with said centrally located opening, said baifle being of substantial length relative to said one end wall and extending into said conduit means substantially centrally thereof, said baifle being so located as to divide each of said two openings into two portions, and a pair of guide plates, one at either side of said baflie and at substantially right angles thereto, each of said plates extending between said baffle and a side wall of said conduit means, one of said plates, extending from the top of said centrally located opening to the bottom of said opening in the outermost wall of said conduit means, and the other of said guide plates extending from the bottom of said centrally located opening to the 4. The apparatus of claim 1 in which the side walls of said conduit means are concave and inwhich'that portion of said bafiie. which extends into said conduit means adjacent said centrally located opening is bent away from the center line of said conduit means. 1

5; In' combination a pulverizing mill including; a rotatable body formed with a cylindrical side;

wall and opposite end walls, a pair ofradiallyi disposed housings fixed to said mill adjacent oner of said end walls, each housing comprisingan. outer wall and opposite side walls fixed to said one end wall, said cylindrical wall having opposed openings, passage-forming means fixed to saidhousings and extending outwardly therefrom,

said passage-forming means communicating with:

said housings and encompassing said openings, said one end wall having an axial opening, said housings being provided with an opening coaxial with said first mentioned opening, a'bafile fixed to and extending between said oneend wall andsaid outer walls, said baflie being located substantially centrally of said coaxial openings and extending longitudinally of said housings a predetermined length, and a pair of guide plates, one fixed at either side of said bafiie and substantially at right angles thereto, each of said plates extending between said baffle and a side wall of said housings, one of said plates extending from said one end wall at a position adjacent the top of said first mentioned opening to an outer wall of said housings at a position adjacent the bottom of said second mentioned opening, the other 0i. said plates extending from said one end wall at a position adjacent the bottom of said first mentioned opening to an outer wall of said housings at a position adjacent the top of said second mentioned opening.

6. The apparatus of claim 5 in which said opposite side walls are concave.

7. The apparatus of claim 5 in which that portion of said baflle which extends into each of said housings is bent away from the center line common to said housings.

8. The apparatus of claim 5 in which said opposite side walls are concave and in which that portion of said bafiie which extends into each of said housings is bent away from the center line common to said housings.

9. In a rod mill or the like comprising a cylindrical body having end walls, means for rotating said mill in either direction, conduit means fixed to said mill adjacent one end wall thereof, said conduit means comprising an outermost wall and side walls fixed to said one end wall, said one end wall having a centrally located opening, passage means leading from said cylindrical body to said conduit means and through which material passes from said mill to said conduit means upon rotation of said mill in either direction, said outermost wall having an opening substantially registering with said first mentioned opening, and a separator plate located between said one end wall and said outermost wall so as to cause material carried by said conduit means upon rotation of said mill in either direction to fall bethe side gamma tween-it and thecend uitside wall; trailing .as said mill is so rotated, said separatoraplatelbeingi pdsitinned substantially centrally of. said: first and said second mentioned openings anddividm ing each at said ope'nings inte twolparts', andj oppositelydispesed-" plate meansfi xeda-at. ei/ther sideof said: separator plate seas tosdivertsaid. falling material through-said first mentioned. openingon one direction of rotation of saidlmille and: through. second: mentioned; opening .en rotation 10f said: mill .in-.the otherz-direction, plate means. having a substantially .Xeshapedl configuration :as. viewed in. sideeleyatiom 10;.5Ihe apparatus. of .claim. 9.; .in. whichrthel side walls of said condnitmeansare concave.

111;..The apparatus. or claim. .9 in which-.ithat portion; .oiasaid separator .plate which. extends; intolsaid :conduit means; adjacent. said centrally. locatedsopeningl islbent away fnomthe. center-line 0i said-conduit means. I ih'e app ratus. of claim. 9 in. which: the; side: wa ls. of; said cpnd it. means are concave and-in. which. hatp rt n. f said senar tpnpiate. which: exte ds. into: said; conduit means. fill-51 s c nt aid; ent ally pcete penin s. ent. away.- froms he; en e line of. said: condui means.

I 1.3- like. ap ar tus. r cl im aWhich he.

bend. q aid e ar tor plate s s ch hathere. is r ater pace. etw en said parator. plat and. its, trailing conduit side. wall when. saiclimill';

REFER-mans, CITED:

"The following references are of record file' of this patent:

STA'I'ES. PATENTS 1 Number Name Date 14.83531 Wilson 10, 1817.41

. .310*,026l Bruning Dec. .30; 1884a 1363 9.64 Brenner June 21,1932; 2,057,526.. HOIZtGHs Oct. 13,..I936l :2 252520' Betersen Aug. .12;v 1 941 .2;299;032: Ransohoffi Oct. 13;; 19.425 2.361585 Huszar. Jan..16, 1914'5; 213922.45 Huszar Jan. 1.1946 2,394,453 Huszar Feb. 5, 1946: 2,429.62? Huszar- Oct. 28,1194? FOREIGN PATENTS Number Country Date. I 10,862 France Oct. 21,1909

(Addition) V V 516,339 Great Britain Jan. 1, 1940