US2562282A

US2562282A - Two-roll type crusher-feeder

Info

Publication number: US2562282A
Application number: US642345A
Authority: US
Inventors: Frank H Nickle; Arthur G Nickle
Original assignee: Individual
Current assignee: Individual
Priority date: 1946-01-19
Filing date: 1946-01-19
Publication date: 1951-07-31
Anticipated expiration: 1968-07-31

Description

July 31, 1951 F. H. NlcKLE ET AL f 2,562,282

TWO-ROLL TYPE CRUSHER-FEEDER Z 25 I l INVENTORS 4/ BY PZ g July 3l, 1951 F. H. NlckLE ETAL Two-ROLL TYPE cRusHER-FEEDER Filed' Jan. 19, 194e 2 Sheets-Sheei 2 '1NVENTOR5 BY ATTORNEY.'

Patented July 31", 17951 Frank H. Niklei and A 'rtuur Quickie, 4 l Saginaw, l .Applieationianuary 19, 1946;r SeralLNm- 64%,3145 I l 'z claims. (c1. 2419141) eeders adapted-,for reducing bulki or lump materials and feeding the' reduced product at any desired rate ofvfiowitopulverizing mills or other lm focessing equipment requiring. a steady influx. VA specific application is the crushingr and feed-v ing. ofearv corni to feed-grinding millst Also, this invention relates to amachine adapted for reducing materials to a predetermined: size, such asuthe reduction of Y-w-liolecorncob to a uniform size-suitalole;` for poultry litter. For either purpcse the constructionfisidentical, as it is characteristic of;r roll 'type erusher-feeders that the reduced. product1 becomes ner when the rate of efilux. is` reduced, and con-trawise, coarser when the rateof flowis increased.`

-Theprimary object of--this invention isi to providefaf flow-controlling mechanism for a' twor-ellf ear cor-n Crusher or the like which may be manually adjusted-gwith little efiortto vary the rate of; output`v and the neness of thegreducedmaterial.

Another object is Ito provide a valve-mechanism which remains inA set position despite the 'tendency of the outgoingmaterials'to crowd thevalves @Den-n l l Apurtherobject to provide` arigid supportingv andclampingmeans for the r4stationary shearing element which co-acts with the rolls when the material isbeing. reduced.

L Fig lis airagmentaryplanvew ofv a tworoll type Crusher-feeder in which our inventionisergcbodiedg the housing,Vx rotative elements and other` parts being broken away-` tomore clearly shew; the flowcontrol I rlechanisin.l

Eig-.5 2- is a. transverse 'sectional elevation taken 0111-. liner 2&2: 0f li-fier- 1;y .Y 3 is alongitudinalsectional elevation taken on) lineV 3- 3- ofv Fig. 2i-

Figl 4 isv an-` exploded isometric fragmentaryviewshowing the flow-control mechanism, the

brokenfl-ines showing; range of movement ofl Valve plates.- Y InthejA drawings, numerals l0 and |l designate endand side wallsrespectively ofa rectangular housing that receives bulk materials` (not shown). The end wallsf' Hlfare made vto supportvv flange@ bea-rings! 1% in which a pair. of roll shafts L31 and.y |4- a-re jou--inaled,` these shafts projecting.

`outwar-dly on one endtoA receiveintermeshing gears` i5 that `make rollsf coactingthe direction @init-ating: being as indicated: by arrows in Fig.; 2 of the drawings. ,r u

".-Tlzeqrvllfeshaffts ,Hkanddk canrrteeth |16 for Mich.

reducing materialxby, action of the peripheral cutting edges Ilv traveling in close relation to stationary shearbar t8; which. bar is centrally dis* posed between the rolls and adapted to receive impact from the" teeth on: either roll. o

The.. shear bar t8 isamounted upon a cross bar |19 that spansy the"Y housingV H in` parallel symmetrical relation .toi the shearbar vand forms the middle portion ofjthe bottom structure. Underlying and supporting the cross bar I9 is a pair of angle=shaped spaced-'apart horizontal side rails 2U' that are' disposed atright angles to the shear bar and attached to" end walls I0.

Tubulartseparatorsll are' mounted on side rails 2U and'thecross bar |19 isV supported thereon:y the space thus formed' being adapted to accom-1 Inodate ai pairor superimposedv Valvev plates .2-2 and 23 that. span the-housing parallel'l to shear bar' t8; theiends being. slidablycarried above and uipoir the upperfac'es oi? tl'ie side rails 20, so that they may be moved-atZ right anglesA to their spans.

Underlying rollshaft; Iii is a rectangular outlet opening".` 215. for thepassjageof reduced: material thev four marginal edges being denned bly cross bar lgfbottoi'rillip 26- of! theA loottorirstruc-I tura-and side rails. 'iciv Underlying rolishaft |.4`

is a Similar' rec'g" 61151615 Opening- 21 that is` dened by' overhangingf lipr zs which is formed with crossbar" f9,- lip 291 of thefloottomstructur'a and side rails 20. the-flow: of the reduced material: is partially i: e'rrupted,` outlet-25 i-'s then defined by the stationary elements 26, 2832-20 andtheieading edge-of'movable plate 22. Like-'- wise', outletfZ'F i'sdeiied bx stationary elements" ig, 20V-'2lil and movalle plate 23; The areas cf'- the' two; outlets 25; afnuzare' equal and sym-A metrical with respect td a1 vertical plane passed midway between axes of the roll' shafts,'thesyn1' metry remaining constaritwl'ien the rate of elux through outlets is varied AVby valve" plates 22 and" 2'3 res'peet'ifvely;v f

The valve plate: 22i's sl'idably supported upou raised bos's'esi' on' side rails 2'0, the upper faces' O'N the' lcos's's'b'eig cpanarfwth 1p'26', so that when the plate isf nio'ved at' right angles to its SpainA toward l'p 26;v tHellX through Outlet 2'5' is interrupted. The upper face of vaive' platt-:Pzz' islfi'at andsfida-blyJ aputs'tlebttom of cross par |191 The vali/ef' platee i ai'sd Carried upontitlei upper'V faces of th'esde railsilZll-Q` said-fY plate ybeinec adapted? itrilut efll'i through outlet 2Tf when moved towards th@ bottom lip 29; The-ur'r--l` per facefof-valvep1ate123=isialsoflatg it slidabl'yf abutting" the overhanginglipf 28' onY cross bar t9? and -likewise the overlapping port-ion' ofL val-va plate 22. In other words, the upper face of valve plate 22 is superimposed in a horizontal plane above upper face of valve plate 23.

When the valve plates are positioned so that the outlets are fully closed, the leading edge 3| of plate 22 overlaps lip 26 of bottom structure. and likewise, the leading edge 32 of plate 23 overlaps lip 29, thereby effecting leak-proof closures. Y j

It will be noted that when the valve plates are not fully retracted below cross bar I9, the leading edge and the two end edges of each valve plate are always exposed to the material in which the rolls are submerged. The vertical build-up pressure of material upon the exposed upper faces of the valve plates, due to the downward force of roll teeth, is a factor in preventing any unwarranted movement of the valve plates when the machine is in operation, as such pressure increases the static friction between the valve plates and the supporting rails.

The shear bar I8 and cross bar I9 are secured to the side rails 20 by means of a pair of capscrews 33, that extend upward through openings 34 in the side rails, tubular separators 2|, and openings 35 in the cross bar I9, all of which are in alignment with the threaded openings 36 in shear bar with which the capscrews are engaged.

The valve plates are actuated simultaneously in co-ordinated reciprocal relation by means of a pair of rocker arms 31 and 38 on opposite sides of the housing, which .arms connect with

links

39 and 40 rigidly welded to

valve plates

22 and 23 respectively, the ends 4| and 42 being turned upward to make pivotal engagement with the adjacent rocker arms. These rocker arms 31 and 38 are pivoted to a pair of brackets 43 on opposite sides of the housing. To either rocker arm is attached a vertical stem 44 that carries a handle 45 that may be manually operated to impart movement to the valves.

The bearings I2 are secured to the end walls IU by means of a plurality of machine bolts 45 having heads 41 on the inside of the end walls. Between the lowermost centrally disposed bolt heads 41, the ends of the shear bar I8 are closely seated, thereby rigidlyv supporting the shear bar so that it may react against lany horizontal forces due to impact from the crushing rolls when crushing or shearingrmaterial.

To remove the shear bar, which must be replaced when the shearing edges become worn, the capscrews 33 are unscrewed, thereby permitting the shear bar to be raised vertically to free the ends from the seat between the bolt heads 41. To facilitate raising the shear bar, the cross bar I9 is provided with one or more holes 48 directly below the shear bar, these holes being adapted to receive a knockout punch (not shown) for driving the shear bar upward.

In operation, an important feature is the fact that

valve plates

22 and 23 always move freely and remain set in any Iadjusted position, this being the result of two contributing factors, one of which is the build-up pressure of the material above valve plates, whereby the static friction is increased as above explained. Theother contributing factor is the tendency of roll teeth to sweep the material over the leading edges 3| and 32 of the valve plates. If the rolls were reversed, so that the material would be forced against the leading edges by action of the moving roll teeth, then the resulting pressure would tend to crowd the valve plates open, thereby destroying the predetermined rate of eillux.

Another outstanding feature is the fact that the rate of elux from the two outlets is equal regardless of how the valve plates are positioned, and further, the size of the reduced material is same from each outlet. This latter feature makes it practical to employ above described flowcontrolling mechanism on any two-roll crushing machine for use in reducing or granulating materials to a predetermined size,l the `size being varied by adjustment of control handle.

What we claim is:

1. In a machine for reducing material, a housing that receives the material, a bottom structure for the housing having a pair of outlet openings, a pair of downwardly co-acting rolls with teeth for reducing the material, the rolls having shafts journaled in flanged bearings, a plurality of threaded bolts for securing each bearing flange to its supporting wallksaid bolts having heads seating against the inside of the wall, a stationary shear bar positioned between the rolls to receive impact from the teeth on the rolls, and means for rigidly supporting the shear bar to react against the vertical and horizontal components of the impact, said means for reacting against the horizontal component comprising the opposite ends of the shear bar seated in metal-tometal contact between the lowermost adjacent 'bolt heads. l C

2. In a machine for reducing material, a housing that receives the material, a pair of downwardly co-acting rolls submerged in the material undergoing reduction, a stationary shear bar mounted between the rolls to receive impact from the roll teeth, a threaded opening in each end section of the shear bar that is adapted to engage a vertical capscrew, means for supporting the shear bar, said means including a cross bar underlying the shear bar in parallel relation therewith and having openings thatA align ywith the shear bar openings, means for supporting the' ends of the cross bar, said means comprising oppositely disposed side rails carried by side walls of the housing and having openings that align' with the shear baroperlings, and means .for

clamping the cross bar between the shear'bar and the side rails; said means comprising'a pairV of capscrews engaging the shear bar and seating; against the underside of theside rails.

3. The combination as set forth in claim 2 wherein the cross bar is heldin spaced relation above the side rails by means ofl a pair'of tubular separator elements. V f

4. In a machine for reducing and feeding material, the combination that includes a housing* in which is journaled `Va pair of downwardly `co'- acting rolls, said rolls having Vteeth for'reducing the material, a stationary element positioned be? tween the rolls to receive impact from the teeth on both rolls, a bottom structure for the housing" having a discharge outlet `underlying each ':roll, and flow-controlling means for simultaneously interruptingl the efflux from each outlet, said means including a pair of valve plates slidablyi supported by the housing for horizontal movement below the rolls in inverse relation and in?Y superimposed planes that directl'ygunderlie the impactreceiving element. Y- A f 5. The combination as defined in claim wherein the flow-controlling mechanism includes rotatable interconnected means for retracting thevalve plates together to increase lthe rate of efflux*- from the machine, said means including a verticalVV stem with handle. v

6. In a machine for reducing and'ffeeding ma.-

5 terial, the combination that includes a housing which receives the material, a pair of downwardly coacting rolls journaled in the housing for reducing the material, said rolls having circumferentially spaced teeth submerged in the material, a bottom structure for the housing, a bottom discharge outlet underlying each roll, each of said outlets being dened by coplanar elements on three sides and on the fourth side by the leading edge of a slidably mounted valve 10 plate, means for supporting the valve plates in superimposed horizontal planes, said means being the upper faces of the coplanar elements in the respective planes, and rotatable means supported by the housing for moving the valve plates in reciprocal coordinated relation to interrupt the effluxes.

7. The combination as dened in claim 6 wherein the rotatable means for moving the valve plates includes a stem which projects upwardly above the housing with a handle mounted thereon.

FRANK H. NICKLE. ARTHUR G. NICKLE.

6 REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 122,877 Brown Jan. 23, 1872 284,135 Livingston Aug. 28, 1883 348,554 Gilbert Sept. 7, 1886 380,245 Creager Mar. 27, 1888 408,448 Winchell Aug, 6, 1889 416,533 Winchell Dec. 3, 1889 926,168 Cadwgan June 29, 1909 1,634,219 Smith June 28, 1927 FOREIGN PATENTS Number Country Date 232,842 Germany Mar. 23, 1911