US1356292A - Pulverizing apparatus - Google Patents

Description

J.E.KENNEDY.

PULVERIZING APPARATUS. APPLICATION FILED r'mz, 191a.

' 1,356,292. Patented 00a 19, 1920.

7 SHEETS-SHEET I.

, E J r\ a -6 i9 WITNEssEse' vmon ik/zm ATTORNEY J. E. KENNEDYf PULVERIZING APPARATUS.

APPLICATION FILED FEB. 2 191a.

1,356,292, I Patented Oct. 19, 1920.

1 SHEETS-SHEET Z.

Wirzesses:

J. E. KENNEDY.

.PULVERIZIYNG APPARATUS- APPLICATION FILED FEB. 2, 1918] Patented Oct. 19,1920.

7 SHEETSSHEET 3.

Wahzesses J. E. KENNEDY.

PULVERIZING APPARATUS.

,APPLICATION' FILED FEB. 2, i918.

1,356,292, Patented Oct. 19,1920.

J. E. KENNEDY;

I PULVERIZINGAPPARATUS.

APPLICATION FILED FEB-2, 1pm.

1,356,292. y I 2mm Oct. 19,1920.

'1 SHEETS-SHEET 5.

Wifizsses: W W,

J. E. KENNEDY.

PULVERIZING APPARATUS.

APPLICATION FILED FEB- 2 1918.

1,356,292." Patented 0 n- 19,1920.

1 SHEETS-SHEET 6 TVilhases: y zw J. E. KENNEDY. PULVERIZING APPA HATUS. APPLICATION FILED FEB- 2, I918- 1,35 ,292. I ,Patented 00p 19,1920.

ISHEETS-SHEET I.

PATENT OFFICE.

JOSEI PI-I E. KENNEDY, OF NEW YORK, N. Y.

PULVERIZING APPARATUS. I

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, JosEPH E. KENNEDY, a citizen of the United ,States, and a resident of the borough of Manhattan, city, county, and State of New York, have invented certain new and useful Improvements in Pulverizing Apparatus, of which the following is a specification.

My improvements relate to the class of grinding machinery in which rock, ore, coal, or analogous crude material is comm'inuted by means of crushing rollers traveling over and inside an attrition ring or die, between which and said rollers the raw material is fed, to be removed by air blast as fast as reduced to the proper degree of fineness. The invention consists in the specific construction, combination and arrangement of parts herein described and claimed, distinctive features being the central induction of the air vehicle, the means for suspending and rotating the crushing rollers, the method of lubrication, the means of feeding the raw material to and between the crushing rollers and the attrition ring, and other details, all as I hereinafter fully set forth.

In the accompanying drawings,

Figure 1, is a diagrammatic view illustrating an installation in which my improved pulverizer forms a componentpart;

Fig. 2, is an elevation of what may be designated as the feed side of my improved pulverizer; i

Fig. 3, is a central vertical sectional elevation taken upon plane of line 3- 3, Fig. 2;

Fig. 4, is a central vertical sectional elevation taken upon plane of line 4-4, Fig. 3; r Fig. 5, is a horizontal sectional elevation taken upon plane of line 5-5, Fig. 3;

Fig. 6, is a horizontal section taken upon plane of line 6-'-6, Fig. 3;

Fig. 7 is a top view of a portion of the drive head showing one of the mounts for 7 one of the crushing roller spindles;

\ Fig. 8, is a sectional elevation taken upon plane of line 8-8, Fig. 7

"Fig. 9, is a top view of a portion of the drive head showing one of the mounts for one of the plow spindles;

Fig. 10, is a sectional elevation taken upon plane of line 10-10, Fig. 9.

Fig. 1, represents diagrammatically the general relationship of my improved roll pulverizing apparatus in and to a system for the reduction of raw material and the Patented Oct. 19, 1920.

Application filed February 2, 1918. Serial No. 215,052..

collection of the product, by reference to which it will be seen thatmy pulverizer P, 1s lnterposed in a forced air circulation generated by the exhaust E, which forces the the clarified air being returned through the conduit c, tothe lower portion of the pulverizer P, to be again used as a vehicle for the removal of the impalpable powder from the crushing chamber as hereinafter set forth.

The raw material is fed from the primary bin A, through a spout a, to the feed hopper 7, from which it is transferred by positive means (as by the reciprocating forwarder 7) through the passage F, to the floor 9", of the reduction chamber R, as will be understood by reference more particularly to Fig. 3, ofthe drawings. The reduction chamber R, is essentially cylindrical in configuration, being formed within the trunk section p, of the pulverizer casing, said trunk section p, being supported upon foundation piers p. Said trunk section 20, is formed with a hollow central bearing post 12 upon and in which the drive head D, and its drive shaft (l, are mounted, the central bearing post 79 being essentially a sleeve extending down to the bottom plate of the trunk section 37, the lower part of which contains the air inlet compartment I, situated immedia ately below the floor r, of the reduction chamber R, and communicating with the latter through a central delivery aperture 2'. The lower extremity of the return air conduit c, from the collectors C, C, connects directly with the mouth 2", of the air inlet compartment I.

12 is an annular extension of the casing fitting upon the top of the trunk section 1), and forming the base support for the shell 39*, which surmounts the reduction compartment R, and incloses the drive head D, and connections,-the shell 17*, being provided with a hood 30 formed with an exit conduit 70, having a downward extension 10 into the shell 10*. Manholes in the shell 39*, and

hood p provided with suitable closures,

afford access when necessary to the inclosed' the air exhaust device E, which latter may the rocker bearing J.

be of any desired or well known type or constar'uetion,- that indicated in the drawings being a rotary fan exhaust driven by a belt 6', in engagement with a pulley m, on the main power shaft M, Fig. l.

The lower extremity of the drive shaft 41, rests upon an adjustableseat cl, mounted on a cap bracket (l secured to the lower part of the gear casing 12 which is secured in turn to the lower side of the trunk section 71, as shown in Figs. 3 and 4:. The gear casing p is formed with a pocket for theaccommodation of the lowest portion of the miter pinion m, on the counter shaft M, which pinion meshes with the gear (Z secured to the drive shaft 03, said pocket also performing the function of a well for the lubricating oil.

The inner journal of the counter shaft M, is seated in a bearing 32 formed for it in the gear casingv p while its outer journal is supported in a bearing 17, on the pillow block T. Secured to the countershaft is a large driven pulley m connected by a belt m (Fig. 1) with a still larger drive pulley m*, on the main power shaft M. The latter also has the drive pulley m, connected by belt 6, with the driven pulley 0 on the exhaust E. A small drive pulley m, on the countershaft M, actuates a belt 7, which transmits motion to the driven pulley f, on the shaft 7, by means of which the feed mechanism is operated. Another small drive pulley m, on the countershaft M, by means of the belt m and driven pulley 1, operate the pump L, by which a forced circulation of the lubricant is maintained as and for the purpose hereinafter set forth.

N, is an attrition ring seated in the upper part of the trunk section 10, of the casing, its exterior periphery being beveled slightly to fit a correspondingly inclined concavity p, in said trunk section 3?, as shown in Figs. 3 and 4. The attrition ring N, is held to its seat by wedge blocks n, positioned in recesses formed for them in the annular base extension 39 on top of the trunk section p. The function of the attrition ring N, is to act as an anvil die, or tread way for the crushing rollers which are pivotally suspended upon the drive head D, which is rigidly mounted as before intimated on the upper extremity of the drive shaft d.

The construction and mounting of the crushing rollers K, will be understood more particularly by reference to Figs. 7 and 8. Thus the tire of each roller K, is secured to a hub section 70, forming the lower part ofv a rotatable sleeve K, which is mounted on the non-rotatable spindle J, ri idly secured to Tfie latter is fulcruined on the trunnion shaft j, supported in bearings d, d", on the drive head D, which latter is recessed, as at (F, between said bearings d d to allow the rocker bearing J, to conform to the inclination imparted thereto by the roller K, when deflected by the material under treatment. Stops (1", pl, on the drive head D, limit the outward thrust of the rollers K. Key pins j, j, lock the spindle J, to therocker bearing J, preventing its turning therein, as will be seen by reference to Fig. 7

An annular shoulder j on the non-rotatable spindle J, supports the rotatable sleeve K, and roller K, the sleeve K, being formed for the purpose with the recess 70 and pro -vided with the cap piece/a which affords ence to Fig. 8. j 3' are wear and spacing.

washers or plates, interposed between said annular shoulder j and the opposed hearing surfaces on the sleeve K. I prefer to secure the tire of the roller K, to the hub section 7:, of the rotatable sleeve K, by making said hub section is, conoidal and threading it peripherally, the tire section of the roller K, being correspondingly formed and threaded to receive the hub section 70. The pitch of the thread is, is reversed to the di rection of rotation of the roller K, so that the working strain on the latter tends to preserve and tighten the connection between the parts.

The non-rotatable spindle J, is formed with a central duct j with which the lubricant cup 3' communicate-s. Said' central duct j, extends down to the well 70*, in the tire section K, below the hub section 7:, and it also, has lateral ducts 70", which distribute the lubricant at intermediate points between the rocker bearing J, and said space it", in the roller K.

Thus constructed and mounted the crushing rollers K, operate with a minimum amount of frictional resistance, and are free to adapt themselves to the irregularities of the raw material fed between them and the attrition ring N.

This feed to the rollers of the material to be reduced is effected by means of the plows S, which take up and agitate the material introduced through the inlet 7, to the floor 1', of the reduction chamber R. The plows S, serve the material to the crushing rollers K, in advance of, and in the line of rotation of said rollers, elevating the material from the floor 1', of the reduction chamber R, to the peripheries of the rollers K, by which it is pressed against the attrition ring N, the materialbeing returned to the rollers untilreduced sufiiciently to be taken up by the air vehicle as hereinafter set forth. The plows not only thus raise and deliver the material to and between the crushing rollers K, and the attrition ring N, but they also act as agitators tostir up the material and effect a relatively even distribution thereof to the several rollers,--five of which are shown in the drawings as positioned and suspended in equidistant relationship upon the drive head D, although any desired number may be provided, as may be found most expedient.

The plows S, are arranged intermediate between adjacent crushing rollers K, so that a like number are provided, each secured to the-lower extremity of its own suspender rod S, the latter being secured to the drive head D, as shown particularly in Figs. 9 and 10. The plow S, is in each case attached to a bracket sl eve s, which fits upon the reduced portion s of the suspender rod S, being clamped l y the nut 8 against the shoulder .9 By this means the bracket sleeve 8, and plow S, may be secured in any prescribed position around the suspender rod S, so as -to regulate approximately the scope of action of the plow S, with relation to the attrition ring N, and

crushing rollers K. a j

The upper portion of the Suspender rod S, passes through bearings d d pendent from the drive head D, and a lock screw (Z may be provided by which to secure the suspender rod S, rigidly in its prescribed position. The upper end of the suspender rod S, also has a reduced portion, 8 to which is spline-connected the hub h, of an adjusting arm H, by means'of which the lateral scope of action of the plow S, may be conveniently varied and regulated with accuracy from above,said adjusting arm H,

being formed forthe purpose with a concentric slot it, through which the screw stud (Z on the drive head D, protrudes as shown in Fig. 9, a lock nut (Z being provided to hold the adjustment, which is further in sured by the binding screw (Z Vertical adjustment of the suspender rod S, is provided for. by the spline-connection between the hub h, of the adjusting arm H, and the reduced upper portion of the said rod S, as will be understood by reference to Fig. 10, by which it will be seen that the upper extremity of said rod S, is screw threaded, for engagement with the nuts s s, the lower one of which, 8 bears against the hub h, of the adjusting arm H, (said hub resting in turn on the drive head D) while the upper one s, acts as a lock nut. It will thus be seen that ample provision is made for.

regulating and controlling the position and action of each plow S.

The floor r, of the reduction chamber- R.-

the conduit 0, communicates directly with the mouth or inlet 2', to the air compartment I, beneath the reduction chamber R, delivering the air thereto by pressure de rived from the exhaust E, said air blast having been clarified by the precipitation of solid matter therefrom in the cyclone collectors C, C. This clarified air vehicle reenters the reduction chamber R, through the aperture 2', concentric with the hollow central bearing post p forming part of the trunk section 39, of which the casing of air compartment 1, also forms a part.

Vithin the reduction chamber R, the central opening 2', is divided by radial partitions, 2' 2' and flanked peripherally by tangential deflectors i i ,"inclined in the direction of rotation of the drive head D, and against the direction of rotation of the crushing rollers K. These radial partitions 2' and tangential deflectors 2' may form a part of the trunk section p, as shown in thethe deflectors 27 and the 'ets of air im )inx e a J l 1:

against the material agitated by the plows diagonally across the path of the latter but also in the same general direction so that there can be no back action, pressure or resistance. Thus directed the air vehicle is best adapted to take up and conveyaway the material comminuted to the degree of lightness prescribed by the strength of the blast or circulatory air system. Hence by varying'the force of the air draft and pressure created by the exhaust mechanism the weight of the particles taken from the reduction chamber may be regulated according to requirements.

This centrifugal air blast in the reduction chamber R, is an important factor in my pulverizer, and most effective because it tends constantly to aid in the return of partially reduced material to and in front of the crushing rollers, while sifting out and carrying away the sufliciently comminuted material to be eliminated from the air current in the cyclone collectors.

The pump L, draws the lubricant from the well 79 of the gear casing 79 throughthe pipe Z, and forces it up through the pipe Z to the top of the drive shaft (2, delivering it to the central duct 03, formed therein, by which it is delivered by the lateral ducts d, to the upper bearing d, in

, the central bearing post 32 to return through the latter to the lower bearing 1),

and to the gear chamber 10 and well 19. By this means the drive shaft 03, and gears 03, m, are positively, practically automatically, and effectually lubricated.

Vhat I claim as my invention anddesire to secure by Letters Patent is,

1. In pulverizing apparatus ofthe character designated, in combination, a fixed attrition ring, rotatable crushing rollers opposed to said attrition ring and mounted on traveling spindles, means for feeding material to and between said attrition ring and crushing rollers from below the same, and tangential deflecting means positioned below and centrally as related to said attrition ring for directing air under pressure centrifugally beneath and between said crushing rollers and attrition ring, for the purpose described.

2. In pulverizing apparatus of the character designated, in combination, a fixed attrition ring, rotatable crushing rollers op posed to said attrition ring and mounted on traveling spindles, means for feeding mate rial to and between said attrition ring and crushing rollers from below the same, and means positioned below and centrally as related to said attrition ring for directing air under pressure centrifugally and tangentially beneath and between said crushing rollers and attrition ring, for the purpose described.

3. In pulverizing apparatus of the character designated, in combination, a fixed attrition ring, rotatable crushing rollers opposed to said attrition ring and mounted on traveling spindles, means for feeding material to and between said attrition ring and crushing rollers from below the same, and means positioned below and centrally as related to said attrition ring for projecting air under pressure centrifugally and tangentially toward the direction of travel of said rollers but opposed to their direction of rotation, beneath and between said crushing rollers and attrition ring, for the purpose described.

4.. In pulverizing apparatus of the character designated, in combination, a fixed attrition ring, rotatable crushing rollers opposed to said attrition ring and mounted on traveling spindles, means for feeding material to and between said attrition ring and crushing rollers from below the same, plows for agitating said material, and means positioned below, and centrally as related to said attrition ring for projecting air under pressure centrifugally beneath and between said crushing rollers and attrition ring, for the purpose described.

5. In pulverizing apparatus of the character designated, in combination, a reduction chamber, a fixed attrition ring positioned therein, crushing rollers rotatably mounted to act in conjunction therewith,

means for feeding raw material to said reduction chamber, plows for agitating the raw material and feeding same to the crushing rollers, and means positioned centrally with relation to said attrition ring for projecting air under pressure into said reduction chamber centrifugally and tangentially, 1

for the purpose described.

6. -In pulverizing apparatus of the character designated, in combination, a reduction chamber, a fixed attrition ring positioned acter designated, in comgination, a reduction chamber, means for eeding raw material thereto, a fixed attrition ring positioned in said reduction chamber, a central bearing sleeve extending therethrough, a drive shaft and drive head mounted in and on said central bearing sleeve, means positioned centrally with relation to said attrition ring for projecting air underpressure into said re duction chamber tangentially and centrifugally, and a plurality of crushing rollers pivotally suspended upon. said drive head and adapted to act in conjunction with the attrition ring to reduce the raw material.

8. In pulverizing apparatus of the character designated, in combination, a reduc- LOO tion chamber, means for feeding raw mateupon said drive head, and alternating in position with the crushing rollers, for the purpose set forth.

9. In pulverizing apparatus of the char acter designated, in combination, a reduction chamber, means for feeding raw material thereto, a fixed attrition ring positioned, in said reduction chamber, means positioned centrally with relation to said attrition ring for projecting air under pressure into said reduction chamber tangentially and centrifugally, a central bearing sleeve extend ing the vertical adjustment of said plows with relation to the attrition ring and crushing rollers, for the purpose described.

10. In pulverizing apparatus of the character designated, in combination, a reduction chamber, means for feeding raw material thereto, a fixed attrition ring positioned in said reduction chamber, means positioned centrally with relation to said attrition ring for projecting air under pressure into said reduction chamber tangentially and .centrifugally, a central bearing sleeve extending therethrough, a-drive shaft and drive head mounted in and on said central bearing sleeve, a plurality of crushing rollers pivotally suspended upon said drive head and adapted to act in conjunction with the attrition ring to reduce .the raw material, a plurality of plows suspended upon said drive head and alternating in position with said crushing rollers, and means for effecting the lateral adjustment of said plows with relation to the attrition ring and crushing rollers, for the purpose described.

11. In pulverizing apparatus of the character designated, in combination, a reduction chamber, means for feeding raw mate rial thereto, a fixed attrition. ring positioned in said reduction chamber, means positioned centrally with relation to said attrition ring for projecting air under pressure into said reduction chamber tangentially and centrifugally, a central bearing sleeve extending therethrough, a drive shaft and drive head mounted in and on said centralbearing sleeve, a plurality of crushing rollers pivotally suspended upon said drive head and adapted to act in conjunction with the attrition ring to reduce the raw material, a plurality of plows suspended upon said drive head and alternating in position with said crushing rollers, and means for effecting both the vertical and lateral adjustment of said plows with relation to the attrition ring and crushing rollers, for the purpose described.

12. In pulverizing apparatus of the character deslgnated, in combination, a reduction chamber, a fixed attrition ring positioned therein, means for feeding rawmate rial to said reduction chamber, a central bearlng sleeve extending therethrough, a.

ofcrushing rollers pivotally suspended upon sald drive head and adapted to act in conjunction with the attrition rin to reduce the raw material, a plurality o plows suspended upon said drive head and alternating in position with said crushing rollers, means for projecting air under pressure into said reduction chamber centrifugally and tangentially toward the direction of travel of said plows and crushing rollers but opposed to the direction of rotation of said crushing rollers, and means of withdrawing air from said reduction chamber, for the purpose described.

13. In pulverizing apparatus of the character designated, in combination, a reduction chamber, a fixed attrition ring positioned therein, means for feeding raw material to said reduction chamber, a central bearing sleeve extending therethrough, a drive shaft and drive 'head mounted in and on said central bearing sleeve, a plurality of crushing rollers pivotallysuspended on said drive head and adapted to act in conjunction with said attrition mill to reduce the raw material, a plurality of plows suspended upon said drive head and alternating in position with said crushing rollers, an air pressure compartment underneath said reduction chamber formed with a central opening thereinto, and means posi tioned centrally with relation to said attrition ring for projecting the air from said pressure compartment centrifugally and tangentially, for the purpose described.

14. In pulverizing apparatus of the character designated, in combination, a reduction chamber, a fixed attrition) ring positioned therein, means for feeding raw material to said reduction chamber, a central bearing sleeve extending therethrough, a drive shaft and drive head mounted in and on said central bearing sleeve, a plurality of crushing rollers pivotally suspended on said drive head and adapted to act in contral opening thereinto, and tangential de-,

flectors arranged in conjunction with said central opening, whereby the air from said compression compartment is projected tangentially and centrifugally into the reduction chamber, for the purpose described.

15. Pulverizing apparatus of the character designated, chamber, afixed attrition ring positioned therein, means for feeding raw material to said reduction chamber, acentrfal bearing sleeve extending through said reduction chamber, a drive shaft and drive head mounted in and on said central bearingcomprising a reduction' sleeve, a non-rotatable spindle suspended on a rocker bearing having a trunnion shaft journaled on said drive head, and a crushing roller rotatably mounted on said non-rotatable spindle, and adapted to act in conjunction with said attrition ring, for the purpose described.

16. Pulverizing apparatus of the character designated, comprising a reduction chamber, a fixed attrition ring positioned therein, means for feeding raw material to said reduction chamber, a central bearing sleeve extending through said reduction chamber, a drive shaft and drive head mounted in and on said central bearing sleeve, a non-rotatable spindle suspended on a rocker bearing having a trunnion shaft journaled on said drive head,and a crushing roller rotatably mounted on said nonrotatable spindle, and adapted to act in conjunction with said attrition ring, said crushing roller consisting of a tire section screwing onto a threaded hub section of a rotatable sleeve mounted on an annular shoulder on said non-rotatable spindle, for the purpose described.

17. Pulverizing apparatus of the character designated, comprising a reduction chamber, a fixed attrition ring positioned therein, means for feeding raw material to said reduction chamber, a central bearing sleeve extending through said reduction chamber, a drive shaft and drive head mounted in and on said central bearing sleeve, a non-rotatable spindle suspended ona rocker bearing having a trunnion shaft journaled on said drive head, and a crushing roller rotatably mounted on said nonrotatable spindle, and adapted to act in described.

18; Pulverizing apparatus of the character designated, comprising a reduction chamber, a fixed attrition ring positioned therein, means for feeding raw material to said reduction'chamber, a central bearing sleeve extending through said reduction chamber, a drive shaft and drive head mounted'in and on said central bearing sleeve, a non-rotatable spindle suspended on a rocker bearing having a trunnion shaft journaled on said drive head, and a crushing roller rotatably mounted on said non-rotatable spindle, and adapted to act in conjunction with said attrition ring, said crushing roller consisting of a tire section screwing onto a threaded conoidal hub section of a rotatable sleeve mounted on an annular shoulder on said non-rotatable spindle, the thread connection between the hub section of said rotatable sleeve and the tire section of. the crushing roller being reversed in pitch as related to the direction of rotation of the said crushing roller, for the purpose described.

JOSEPH E. KENNEDY.

Witnesses MARGARET L. KINDT, F. E. DOWNING.

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