US1776411A - Pulverizer - Google Patents

Description

p 3; 1930. c. E. BRAINARD 1,776,411

Filed Aug. 2, 1928 2 Sheets-Sheet l p 23, 1930- c. E. BRAINARD 1,776,411

PULVERIZER Filed Aug. 2. 1928 2 Sheets-Sheet 2 Patented Sept. 23 1930 BRAINARDQOEGIIICAGO; ILLINQIs, AssIeNoR TO WESTERN rounnnr COIE- PANY, or :GHICAGQIILLINOIS, A CORPORATION'OF ILLINOIS .i a

ruvm m i 1 I llip lic at i on fil'a mm 2, 1928. Serial n zee ezg Itis anobjectof this invention to fprovide' I an "improved type'of pulverizing machine of the rotatabl'e'type whereinmaterial to 'be'pul verized is adaptedtobej fed'inwardly from 'Lbdth the feeding end and the discharge end of'the machineintoth'efield of operation of a plurality of passaged segmental roller section-s and materialdistributing rings adapt- 'edjtofcoact' with oneianother and with the walls ofthe rotatable hoi'ising t grind and piil verizejsaid material with saidri ngsaot- A ing to carry thematerialfrom the bottom of thehousingand deposit the s'ame between the coac'tingsegmentalroller'sections.

1 vide' aip'ulverlz'er having arotatable'housing .LIt" ale n object of this invention to prowithin which grinders consisting-of segmental roller sections are loosely 'positioned'in coacting interfittin relation with "recessed 1 rings-to permit aproper'distribution of the v material within th'e'housing to'cause the segmental roller sections to thoroughly and etiiciently pulverizematerialfed into, the hous- :3 ing.

lt is a further object of this inventionto provide a pulverizing machine having are; tatable' lined housing and, furthermore, havi fling loosely positioned therein a plurality of V pa'ssag'ed tapered roller; segments arranged peripherally recessed'ring's adapted to carry 1 the material accumulated in the bottom por in groups with said groups'separated by loose,

tion of the housing upwardly into the up per portion of the housingto be redistributed oversaid tapered roller segments to be fur-' thei -subjected tothe pulverizing action" of said segmentsw e tion to'provide an in provedpulverizing ma constructed of a pluralityof compojnent in-" t'erfitting passaged. segments, certain faces chine wherein a rotatablehousing isadapted to enclose a plurality of loose rollers each of each of which are adapted to coact with an impact 'action anda shifting action with corresponding faces of the remaining segments, while the-tapered or beveled side sur-'= faces'iof the segments are in coacting interp terial to the repeated action It is furthermore an object of thisinventhe. material from the lower portion of said housing upwardly to be rede'po'sited between the segm'ents for further-pulverization.

saged segments having beveled side surfaces permittingthe rollers to have interfitting frictional contactiwith the inner peripheral beveled surfaces of loose ring members havingfpoc ket's in the outer peripheral surface thereof to permit redistributing of the ma: terial within the housing to subject the" ma thisinvention willb'e apparent from'thedisclosuresin the specification and the accom panying drawings. w v j This invention (in a preferred; form) is illustrated in the drawings and hereinafter On the drawings: 1 p Figure 1 isfla longitudinal section of a pul verizer embodying the principles of this in vention', showing improved segmental rollers in, elevation and in engagementwith, im-

proved ring members shown inisectionit v F gure 21s an end elevatlon of" the discharge end of the ,pulverizerjv Figure 3 is a transverse section of thehous' ing taken on line III.III of Figurell, i1;

i housing shown in'section to show the coacting rollers andrings in elevation. t

Figure 5 is aside elevation of one ofthe improved ringmembers removed from the housing. I v t Figure 6 is a peripheral view of the ring member. p a

Figure 7 is a diametric section of the ring 7 member.

Figure 8 is-a sectional view ofa" ring member' taken on line VIII-'VIII' of Figure 6.

As shown on the drawings: a s Supported on a base or :foundation 1, are a pairof bearing standards or supports 2 and '3, between which a rotatable sectional housof said'rollers. Other andfurthenimportant objects of ing or casing 4 is disposed. Integrally formed 7 axiallyon one end, of thehousing section is a hollow entrance sleeve or supportingcylinder 5 having an opening 6, in the outer'end thereof. iIntegrally formed on the inner peripheralwall .ofthe supporting .cylinder 5 isv a spiral" fecdvane adapted tofeed 1a mater-g rial from theouter end *ofsaid cylinder inwardly into the pulverizing chamberof'th" housing'isi fiilntegrallyiformedaxiallyonthe:

opposite, end Offztlfli housing section is abearM g Supported above the conveyor .trough 26 is'a material feed hopper 30 provided with a false 7 slidablebottom 31 having a discharge open- The outer end of the disch'arge cylinder' 8 z: is. provided i. with an ,ioutlet [on d scharge 5 opening} 9;: Formed .on the qinnenperiph'eral wall ofthe discharge, cylinderw8cisf;a.spiralg mg sleeve or supporting cylinder 8 through which the pulverizing material is adaptedto" be discharged.

vanep feedscrewlQ arranged to. permit. any

relatively} heavy material that may find its way intp ifghe. cylinder 8' to lodge .behind :the

spiral ,vane 10. and be fed or-carried back into 1.

the, pulverizing chamber of the, housing A The apertured oridischarge endiof thesupport'ing cylinden 8 jproj ects into-.a.=st-ationary I discharge; .drumi'on casing .11 which-is;-. sup+v ported, upon the. .base orl foundation 1,v by

means; .of supporting. legs 12,. I or other; suit.-

V ablesmeans Formed on the. bottom gof the outlet casingl1isa,dischargeisle'eve orfpipe 13. Fthrougih which v the granular; product -.is

adapted to: be discharged intoany suitable container or conveyor positioned {beneath or connected with thendischange-pipe 131' I Connectedwiththeuuppersend of -the casingori drum 11 is a pipe 14 whichgissadaptedflto beconnected with an air exhaust fanroriwater pump tov lnduce adraftof; air, onsteam throughthe} pulverizing 1 machine 2 whereby w the. dust may be separated fromthe granu L lar. product landlcarried upwardly. "through the pipe .lintoa suitable. dust .container C011? nected therewitln".

Secured upon the discharge cylinder -8 -be-i A tween: the. bearin'gHQ and the housing-fl is a i large: gearwheel 15 with which-- ardniving-J gear, or; pinion: 16 is. in mesh. Thedriving;

gear is secured uponadrivingshaft 17, oneendofwhich is journalled in a bearing. 18

5) supported onan extension .of the bearing 7 standard 2. The other. end. of the driving i shaft 17 is journalled in abearing housing 19..supported by means of la standard 20 upon .the .-.op-pos;iteend,of the base 1. Engaged-1on1 the other end of the shaft 17 to the outsideof .the.bearinghousingli); is a driving pulley 21 adapted to be connected by means of-aing power.

we Mounted on the-.drivi-ngashaft 1'Z'fadjaocnt I 6a.: eri l eediimeshanisms lf i pulleyqflsisii able refractory material. 3iareremovably-held in placeso-that when the: same .becomewwornnew'{rings may be sub-:' 1 2.9.- sLo osely' r mounted gwith-fn the crushing -or pnlverizing chamber 33 of the housing ta are: drivinggbelt. with any gsuitable source of zdrivmounted on the outer end of a 25 which i V 7 work 27 secured to the top of thebase section 26 and projects; throughgthe, 'openin gi' fi; into projects longitudinally throughfa' "inaterial i I,

conveyor trough-26 supported upon a'framethe receiving end of the bearing cylinder 5 is a-single-tufr'n conveyor. screw or blade 29.

ing 32 "therein to perinit material from the hopper to be admitted: into the conveyor trough-926 Hate-different distances fromnthe feed screw 29.; thereby. .affording an; arrange ment whereby the; amount? of inaterial 3d HlltteClUlIltO the. feed. troughmay thus ibe,v gradually advanced; or piled 6 up{ thereinZ -by "of thepulverizing machine. Mounted on the shafe25,me nthedis har e end of the dea 111 v which. ,arrangementnthe ,feed of v the material may; be increased from--v a small amount until; 1 the, full .;capa-city of thelfeed screw-29 has been. attained;- This widerangefofthe feed.-

ing of the material is obtained as stated, .by shifting; the false hop-per bottom 31 so that the material entering from'thehopper 30 into: the feed trough 126;lS;-.plled;11p-=Wltll -lh6I ad c vance -facei of thepile of material assuming an inclination of approximately athirty dc x I grees,- rwithgthe; more :finelycrushed {material usually inErepose; (at. theaadvance. end: of: thepile-,of, material .{sol that the 1 nearer .the 1 hole of/thehopperibottom 31 is to the'feedscrew 29, the greater :Will bethe amount "o frmaterial;

which, is brought into engagement FWithithG revolving:;feed screw;

It will thus be seen material to, be :pulverizcdbr g anu y that the amount of? be \fed into .the: entrance end .of-- the ;bearing;,= i

sleeve predetermined. orregulated-i amounts advanced intothe field-Tofoper E ation of therspiralfeedscrew or vane 7 which 1 advances theImateIiia-l into a grinding orpuls 'verizi-ng chamber 33ijprovidedwithin thehousing As Rigidlysecured .to ithetapered o r incl h I I inner .end walls of. :the housing 4, are dished r or: beveled,bearingringsfit which are eon-' structed-of hardenedsteel: or any other suitf-;

stituted :in; place fthereof;

The liner rings awplurality-of.floating: grinders or roller.

mechanisms which have'cno connection-with theinteriorrofi the housing-or the liner rings structed-v. ofj-thardenedz isteeleorc other? suitable. material iand Icomprises an plurality- -of 7 secs:

tiQnsof segunentsl35. of:sub'stantially one hung,

, 'dredtwenty degrees, are fornied sub- 'st-antially as illustrated in -F iguresrand 3,'

I with each segment having a flat niiddlej peripheral surface 36' anditwo inclined or bev-f eled peripheralside surfaces 37 positioned on" I opposite sides of the niiddleperipheral surface 336; 'Eachf segment also has two angled i surfaces" '38,. and is furthermore prov ded with a'passage'39extend1ng. from one j'ofg the surfaces- 88 to the. middle peripheral surface 36, and substantially parallel to the second angledsurface 38. w The outer endof the passage 38 is enlarged at the end opening through the middle peripheralsurface 36.

.Thesegmentalrollers or grinders are arrangedadjacent one another as illustrated in Figure 1, and each pair of said rollers isseparated by means ofan improved hardened steel ring 430 provided with inner peripheral k beveled surfaces 41 which forma Vcross'sectionedring, the beveled surfaces 41-]. of'which areadaptedto have a slidable fit with the beveled side surfaces 37.0'f thesections forming, the pair ofadj acently positionedrollers. By referring to Figure 1, it will be noted that the segmental rollers interfit the beveled rings 40. Formed in the periphery of each of the rings iO -are a plurality'of pockets or scoopseta each of which is; providedwit-h a tapered discharge. opening 42,0peningthrou'gh one of the beveled inner peripheral surfaces 41 of the ring,

The discharge openings 42formed inthe be'v-v eled; inner peripheral surfaces of the ring are staggered with respect to one another. Each of the pockets or scoops a l formed in. the

outer periphery of the ring is provided with an inclined wall e3 which leadsito the discharge opening and serves as a guide for, conducting any material caught 1n the pock:

ets as out throughlthe discharge opening 42 to be depositedfbet -ers. forpulverizationl' a placedtogether with tlie'in'clined surfaces 38' engaged with those of the adj acent'segments, a'substantially circular roller is formed of Y approximately threehundred sixty degrees.

weighted and hardenedf 'roller mechanisms comprises three. ,s'ergments' which, when Infthe present instance, there are threesegnientrollers disposed adjacent one another within'the housing 4 affording V cross-sectioned circular grooves betweenthe rollers for the reception of the V cross-sectioned 1 rings 40. The adjacent sides of eachpair of segment rollers are adapted to abut one anot'lienfand the beveled surfaces 37 thereof are adapted to have frictionalfcontact'with the bevel ed inner peripheral surfaces 41 of the rings'lQ. The segmentalrollers are loosely disposed within the housing a and are adapted to'be rotated therewith, together with the ringsso that the various segments comprising' each rollenwill coact with one another not only with a hammer action between the ween segments of theroll f is illustrated andde'scribed; each of-the ner peripheralsurface of the main portion of the housing e, to further crush and pulverie'e materials caught between the outer surfaces of the roller segments and the inner faces of a the liners 34 and the housing 4:. Attention is also called to the fact that there is an additional' crushing and pulverizing action which :takesplace between the beveled end surfaces 37 of the roller segments which coact' with the beveled surfaces'elof the rings 40,- The crushingand pulverizing action producedin this improved machine, therefore, takes place between the various segments of the rollers between the roller segmentsand the/inner surfaces of the housing jand'betwee'n thexc'oandthe material distributing rings 40.

acting'beveled surfaces of theroller segments During the operation of the machine, terial which is partly crushed finds" its'way into the lower portion of the housing and, j

ordinarily, would be inclined to remain in the lower portion of the revolving'housing' if it were not for the factthat the improved pocketed rings positioned between the ro'll ers served as "a means for carrying the material'upwardly into the upper portion of the housing'to be distributed between the roller segments and between the roller segments and the'rings. 1 I

During the rotation'of the housing at, the

1 rings being looselydisposedwithin the h'ousing, take on a rotatable; motion and the pockets 44; ofthe rings pick up quantities of the material in the lower portionofjthe,

housing gradually carrying the same upwardlyinto a position illustrated in Figure" 4, wherein the materialis'guided oi twa'rdly and slides over theinclined guidewalls 6L3 and is discharged out Oftll dischargeo'pen-fi ings 42betweenpthe roller segmentsand be tween said segments and the inner surface of the upper portion'of the housing. The

material within the lower] portion of the housing is also adapted to be scooped up into theenlarged outer ends of the segment passages 39 (Figure 3), and is consequently carriedupwardly until the roller segments reach the upper portion ,of the housing wherein the passages 39 assumean inclined posltion so that the lower or inner open end of the passage allows the material trapped in the passage to slide therethrough and be discharged into the space afforded between two of' the separated segments as illustrated in Figure 3. It will'be noted that both the material distributing rings and the grooves'within the-roller segments serve to repeatedly redistribute the material within the rotating housing. so that. said material iszunifornllylcrushed and pulverized to any degree desired.

Attention is also directed to the fact that' the-outerperipheral surfaces of thevarious roller; segments have, arolling or rubbing contact with the inner surfaces of the housing as well as aslidable rubbing'action therewith. Inaddition to the abovepulverizing action'between the parts, attention is" also,

called to the fact that the outer peripheral surfaces of the material distributing rings also have rolling and rubbing contact with the inner surface of the housing l, tocause an additional crushing and pulverizing action to; take place on the material. A deof the housing,take s place thereby providmg a highly efficient 'pulverizing machine acting-onmaterials fed by the feeding mechanisms into the entrance bearing cylingder 5 andcontinuously redistributed due to vthe action of the pocketed rings and the ef- 7 feet of the passages provided in the roller segments. j a J I A draft is adapted to be induced by air or steam through the pulverizing machine due to the'co'nnectio'n' of the pipe 14 with a suction-pump or the like so that the pulverized or granular materialcrushed in the,

chamber 33 will be drawn-through the 'discharge bearing cylinder 8 with the ,finely pulverized material or dust being carried upwardly through the pipe 14: while the granular product is adapted to be dis charged throughthedischarge or outlet pipe and is not completely-crushed or pulverized which finds its way into the discharge cylinder 8 lodgesbehind the spiral blades'or ribs 10 and-due to the rotating action of the housing and its bearing cylinders will be fed backwardly through the cylinder 8 to re-] enter the pulverizing or crushingchamber 38 to be'further acted upon and completely crushed or pulverized.

While thepassaged segmental rollers are illustrated as each comprising three interfitting and coacting. segments it will, of.

course, beunderstood thatv crushing rollers constructed of any desired" number of coacting segments'may be. furnished and that the shapes of the segments may also be varied without departing from 1 the, principles ofv this invention. 1 w V v Iain aware thatcmanyv changes may be madeand .{numerous details 1 of construction material which is relatively. heavy may be aried through a wide range with- V out departing from the" principles ofthis, invention, and I therefore do not purpose 1 s limiting the patent granted "hereon, other wise thanmecessitated by the prior -a'rt.

I claim asrnyinventionz.

1. A pulverlzer compr sing-[Qrotatablei housing-having acrushingchamber therein,

means for feeding materialinto said housing; a plurallty of passaged coacting roller segments loosely mounted within-"the housing s, adapted to coact with one another and with Q the housing'to crush and pulverizethe mate rial fed: into the housing,

uting rings'mountedwithin said housing'in coacting relation with said roller segments to assist in the pulverizing action oflthe 'ma material distribterial, and means connected with" the housing" to withdraw the pulverized and granular l c,

p "mss p 2. A'pulverizingmachine comprisingairomaterialtherefrom;

tat'able housing means for supportingthe same, "feed means for delivering a material into the housing, anda'roller mechanism prising'a plurality of coacting segments'hav- 'ing material distributing passages therein;

said segments adapted to coact with one another witha sliding and animpact' action and further adapted to coact with-the casing with 'a sliding and impact action to crush and pulverize material fed into the housing and distributed therein due to'the" loosely mounted in said housing "and com passage of material through the passages in said segmentsand out through the coacting U surfaces of said segments.

pulverizer comprising a housing, means for rotatlng the same, andqrollers looselymounted therein each comprising a plurality of coacting segments adapted to have a longitudinal and a radialsliding g V ment with respectto-one -another in addition totimpact actions 'one'on' the other to cause crushing and pulverlzing "of materials be-V tween the roller segments and between said segments and the housirigssaid roller'seg- I mentshaving passages therein permitting the a material to. be circulated'through the' segments out through the coacting faces thereof and repeatedly redeposited between the segments to cause further pulverization of the material. I i 1 j 4. Thecombination with a rotatable pulverizer; housing, of a roller, loosely mounted therein and comprising a plurality ofpas saged roller segments constructed to have a' sliding and an impact action one'qwith the other and with the interior. of the housing, to cause .crushingand pulverizingof a mate; rlal deposited in the housing, and further more causing a distribution ofthe material from between the roller segments and the casing'by thedischarge of the material through.

theflatcoact g c sro-f sa d pas agedr ller ments.

I 5. The combination with a rotatable pu1-, 1 verizer housing, of rollers mountedtherein each comprising a plurality of coactingpas saged segments constructed to tumble around; within the housing when the same is rotated i rial into the field of segments into so that said segments will have asliding as W i well as an impact action one on the other and on the interior ofthe housing to crush and pulverlze the material deposited in the;

passagesby :the discharge of the material through the openings in thecoacting surfaces of the segments to repeatedly bring the mateoperation of said segments. I

' 6. A pulverizer comprising a rotatable housing, hollow bearing cylinders for supporting the same, feed means mounted with in said bearing cylinders to feed material into the housing from opposite directions, pas-- saged segmental rollers loosely mounted adjacent one another within the housing arranged to discharge material through the coacting faces of the rollers, and material distributing rings positioned between said segmental rollers and coacting therewith to aid in the crushing and pulverizing ofthe material. i I 7 A pulverizer comprising a housing, means for feeding material into the housing from opposite directions, a plurality of pas-' saged segmental rollers loosely mounted within said housing, and a plurality of material I distributing rings loosely mounted within said housing rollers. V

8. A pulverizer comprising a rotatable housing, a plurality of segmental rollers loosely mounted within the housing adapted between said segmental I to coact with the housing to crush a material fed thereto, and ring members loosely mounted within said housing between said segmental rollers and having pockets therein, to permit the material within the housing to be redistributed for repeated pulverization by said segmental rollers.

v9. The combination with a rotatable pulverizing housing, of, passaged segmental rollers looselymounted therein to coact with the housing by the action of gravity and the rotation of the housing to crush a material by attrition, said rollers having the passages arranged to cause discharge of material through the fiat coacting surfaces of said rollers.

10. The combination with a pulverizing machine, of a roller mechanism adapted for use therein comprising a plurality of beveled roller segments having passages therein and adapted to interfit one with another to form a substantially complete roller, with the passages arranged to permit discharge of the .n teria hr mounted therein,

the fiat coacting= suriaces of -11. The combinatioii a pulverizing machine, Of. passaged segmental beveled rollers, mounted therein, and/means loosely mounted; withinsaid housing for redistributing the material into the field of operation ioft-said segmental rollers; s 7 1 .2. .12, T e "cQmbin'ationwi'th a rotatable pulverizing machine housingfof material jdistributing. members loosely mounted thereirn housing, and further adapted to cause a circulation of the material through the segment rotatable pill 14. The combination with a rotatable pulverizing housing, of passaged segmental rollers mounted therein, and material distributing rings within said housing between said segmental rollers with each of said distributing rings having a plurality of radial pockets adapted to distribute material from opposite sides of the ring members.

15. The combination with a rotatable pulverizing housing, of pulverizing rollers and material distributing rings loosely mounted within said housing to distribute the material into the field of operation of said rollers.

16. The combination with a rotatable pulverizing housing, of pulverizing members loosely mounted therein, and material distributing members loosely mounted within said housing in coacting relation with said pulverizing members.

17. The combination with a rotatable pulverizing housing and the pulverizing members thereof, of material distributing rings loosely mounted within said housing.

18. The combination with a rotatable pulverizing housing and the pulverizing members thereof, or" material distributing members loosely mounted within said housing and having pockets therein with the outlets of said pockets staggered with respect to one another to permit material carried by said distributing members to be distributed from opposite sides thereof.

19. The combination with a pulverizing housing, of a material distributing member loosely mounted therein and comprising a ring having peripheral material conveyorof ring members loosely mounted therein, and' beveled rings loosely 'm oun'ted in said housing between said r-Hers,'

with eachqfsaid rings havingpe'ripheral material carrying 'pockets formed therein "201 mm"bbmbineti'on with a pu'lv'erizing hqus ing, of passaged 'beveled rollers lobsely With-the discharge openings of "said 'pokets Staggered p m the material carired in V v 7 'sai dpockets to be'distfibuted'from opposite 10 1 7 e fl-In testi'mony whereof I have hereunto sub- I s'eribedmy name, e V

sides Ofthe rings.

7 CHARLES EBRA INARD.

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