US2190036A - Ore crusher - Google Patents

Description

Feb.13,194o. O CH 2,190,036

ORE CRUSHER Filed Aug. 6, 1936 3 Sheets-Sheet 1 Int enter. Jim! JZhnmM J. J. MORCH ORE CRUSHER Feb. 13, 1940.

3 Sheets-Sheet 2 Filed Aug 6, 1936 J. J. MORCH Feb. 13, 1940.

Filed Aug. 6, 1936 Patented Feb. 13, 1940 U I E r v ORECRUSHER I I l Jacob Johannes March, Toronto, Ontario, Canada Application August 6,1936, Srial No. 94,540 In Canada August9, 1935 I 10 Claims. (01; 8 3-40) {The principal objects of this invention are to provide a machine which will break up and pill-v verize ore to a very fine degree in a single passage through the mill and requiringthe minimum amount of power, and to devise a machine which may be readilytaken apart and assembled, and

in which the parts are so constructed that they may; be easily transported. 1 i

The principal features of the invention consist in the novel constructionand arrangement ofa plurality of cone-shaped crushing members obliquely eccentrically mounted upon a rotatable shaft and operating within converging and vdiverging crusher rings which are separably secured together forming part of theqrigid frame structure in which the shaft and rotatable cone crushers are mounted. i M i v e I In the accompanying drawings; Figure l is a Vertical mid-sectional View through a crusher constructed in accordance with this invention. a

Figure 2 is a horizontal sectional view through the line 2-2 of Figure l.

Figure 3 is a horizontal sectional View through" the line 3-3 of Figure 1. l

Figure 4 is a horizontal sectional viewthrough the line l-d of Figure 1. I i

Figures 5, 5o, 6, 5a, 7 and 7a are a seriesof diagrammatic plan and sectional elevational views illustrating the opposed obliquely eccentric mounting of the crusher cones in centralized and extreme right, and left positions.-; V i In the-use of ore-crushing machinery it is fre- I quently necessary totransport the same over exceedingly rough trails or even by aeroplane andwhile the: nature of these machinesrequires to be exceedingly strong; yet 'theparts must be of such size and shape as to be readily portable.

In the construction herein shown the base I, which is of cylindrical form is adapted to contain the motor for driving the shaft of the mill. On this base is mounted a ring 2 which carries a flange plate 3 of dished formation, upon which is mounted a vertical journal bearing 4.

. A cylindrical member li of a diameter substantially corresponding with that of the base i is mounted on the ring 2 and is provided with a central bearing boss 6 supported by a plurality of radial arms "I. The upper end of the member 5 is formed with an inwardly bevelled portion 3 and a plurality of radial arms 9 extending outwardly therefrom carrying the flange ring H) which has a downwardly extending flange ll.

Suitable roller bearings it are mounted within the boss 6 to support'the vertical shaft l3 which is connected with the motor arranged in the base larger rocks entering the upper hopper.

through the bearingmember 4. I The top ofthis boss is covered by a sealing plate M with a suit.-

able sealing ringsurrounding the shaft to prevent Water and dirt from entering the bearing.

A ring l5which forms a crusher shell is of a frustro-conical form and is mounted in the 1 flange ring I0 beingreinforoedat intervals by radialexterior ribs EBQAn eccentric sleeve ll is mounted on the shaft l3 above-a shoulder l8 in horizontal alignment with the crusher ring 15, the axis of said eccentric being slightly offset obliquely in relation to the, axis of the shaft. Around this eccentric sleeve: is arranged af cone structure 8 9 provided with" a hollow central boss Zilenclosihg a roller baringf'l which is suitably m;

sealed at both top andbottorn.

i A crusher ring 22 oi frustro-conical form is mounted onthe conel9, it being provided with steel and-I its periphery is frustro-conical and converges inwardly from the inner wall 2510f the mcrusher ring l5, so that'the space between the inner Wall of thecrusher ring andthe come at" 20 v the top is much wider than itis at the bottom,

andfthe oblique eccentricity of the sleevel! is such that the" external diameter of the bottom edge of the cone approaches very closely to the lower portionvof the crusher ring l5. may be adjusted so that thecone and ring practically touchgto regulate the size of the pulverized 'material that is finally passed through the mill.

An eccentricsleeve 25 is obliquely mounted on theshaft l3 above the sleeve El and its axis is 3 offset in relation to the axis of the eccentric ll and is preferably arranged at a greater angle of 1 obliquity from the shaft axis than is the axis of the eccentric IT. A roller bearing 26; surrounds the sleeve 25 and supports a cone 2! which car- 49 ries a cast steel crusher cone 28 in the form of a frustro-conical ringwhich is supported by lugs 29 in an adjustable position. Thelower edge ofthe upper crusherring' 2il overlaps the upper edge of the crusher ring 22 and directs material downwardly. to the space between the rings l5 and. 22.

The greater angle of obliquity of the upper cone H causes a greater tilting crushing movement which is very effective in crushingthe A crusher ring 38 of inverted. irustro-conic l form is mounted upon the ring l5 and with the cone ring 28 forms a hopper of circular form but the inner wall of the hopper is eccentric to the outer wall. 55

This space;

.duces a very positive crushing eflect.

It will be understood that through the rotation of the shaft is the obliquely mounted sleeves l1 and 25 will cause the crusher cones carried thereby to oscillate laterally and with a tilting action within the crusher rings, and the combined vertical and horizontal action of altering the space between the cone and the surrounding ring pro- The changing relation of the cones and crusher rings is very clearly illustrated in the diagrammatic illustration of Figures 5, 6 and '7, and 5a, Ga and 7a; Figures 6 and 6a show the relative position.

of the cones and rings across the aligned position of the axes of the eccentrics with the shaft. Figures 5 and 5a illustrate the'right tilt of the upper cone concurrent with the lefttilt of the lower cone while Figures '7 and 7a illustratethe left tilt of the upper cone with the right tilt of the lower cone. The cones are mounted on roller'bearings so that while the shaft rotates freely to operate the eccentrics, the crushing cones are operated with an oblique rotary oscillation.

A ring 3| is mounted on the top of the crushing ring 28 and is provided with a flange 32 extending upwardly to correspond with the flange H of the ring ll).

A plurality of fastening devices in the form of turnbuckle rods 33 provided with hook ends 3 L to hook over the flanges of said rings are arranged around the assembly and are tightened; to'hold the rings in position.

The ring 3| is provided with a plurality of inwardly extending radial arms 35 which support a tapering and hollow boss 35 within which v is mounted a roller bearing 37, which bearing-engages a sleeve 38 mounted on the shaft l3. This sleeve is concentric-with the shaft and the shaft is capable of sliding movement therein. The sleeve is provided with a flange 39 at the top formed with a plurality of bosses 40, and spiral compression springs M are mounted on this 7 flange around said bosses. A similarly flanged sleeve 42 engages the springs and isheld in positionby the cap screws 43. v

Afiange plate 44 iss ecured in the top of the sleeve 42 and engages the annular flange 45 on a jack screw it which is threaded into the end of the shaft l3. By operating the jack screw the pressure of the springs M which resiliently opposed longitudinal crushing thrusts may be increased or decreased to resist downward pressure against the shaft through the effect of crushing rock in the annular spaces between the cone crushers and the ring crusher and the crushing clearance and pressure between the crusherrings l5 and 22 may in this way be varied.

A safety shear ring 45' is mounted in a groove in the ring 44 and engages the underside of the.

flange 4'5 and suspends the shaft. In the event of a sudden overload caused by jamming of rocks in the crusher the ring 45'WV111 shear and relieve the stress.

A water bell 41 is arranged over the end bearings of the shaft and pours water downwardly on the outside of the central boss of thetop frame ring. This water pours into the converging hopper formation between the upper crusher ring and the upper cone, and crushed rock is washed downwardly, flowing over the bevel-8 of the member 5 into a trough 48 surrounding the member 5 which carries off the ground material.

It will be understood that in the operation of this machine, as the shaft is rotated in its fixed bearings the eccentric sleeves obliquely mounted thereon carry the bearingsengaging therewith,

I to the sectional diagrams in Figures 5 to '7 and,

5a, 6a and 7a, that the rotary oscillation of the pair of crusher cones, being carried on oblique axes, imparts to each cone a tipping movement toward and from the wall of the crusher rings, and as the lower edge of the upper cone 28 draws away from the encircling ring 30, allowing the smaller particles of rock to fall through, the skirt of the lower cone 22 immediately therebelow is tilted into close proximity to the ring surface 24, thus catching and holding the particles of rock until they are pulverized to the finest possible degree in accordance with the setting of the cones.

It is important to note that with the construc tion herein described the double cone arrangement is such that the discharge of rock from the upper cone to the lower may be synchronized in such mannerthat the feed to the lower cone will bein proportion to the degree of fineness of material required in the final product.

Further it will be noted that a four point crushing is achieved with the two eccentrically and obliquely mounted cones since the eccentric dis placement of each cone will set up a crushing action in one zone while the wabble effect due to the oblique mounting will set up a crushing action in another zone.

The oblique eccentricity of the respective cone axes is such that the cone axes are disposed in planes which intersect one another or it may be said that the cone axes have a substantial focal point intermediate of the height or length of cones producing a wabble that creates a crushing' effect on opposite sides reducing the bending moment and facilitating discharge.

The structure of the machine is such that it may be very readily dis-assembled. The upper bearing ring section may be lifted off the top crusher section and the top crusher section taken from the lower one and the lower one taken from the upper space ring. Similarly the cones may i be separated so thatall the parts may be of such size and weight as may be handled readily under diflicult transport conditions. Owing to this readiness of dis-assembling, broken parts may be readily replaced or parts may be removed for repair.

- What I claim as my invention is:

1. An ore crusher having superposed converging and diverging crusher rings, a shaft concentric therewith, and cones eccentrically mounted in offset angular relation to each other to rotate on said shaft and oscillate within respective rings, the axes of said cones being arranged at oblique angles in diverging relationship to each other.

2. In an ore crusher of the type having superposed separable converging and diverging crusher rings and. a shaft concentric therewith, cones eccentrica-lly and obliquely mounted to rotate on said shaft in co-operative crushing relation to said respective rings, the oblique axes of said cones having a substantially common focal point intermediate of the depth of thecones.

3. In an ore crusher of the type having superposed separable converging and diverging crusher rings and a shaft extending therethrough, crusher cones eccentrically and obliquely mounted on said common shaft for rotation relative thereto and co-operative with respective crusher rings, the obliquity of the axis of one of said cones being greater than the obliquity of the next succeeding cone, l

4. In an ore crusher of the type having superposed converging and diverging crusher rings, and a shaft concentric therewith, conesobliquely mounted to rotate on said shaft in co-operative crushing relation to said respective rings, the oblique axes of said cones crossing the shaft exis within the axial length of the respective cones and each diverging therefrom to pass through a transverse plane at a point intermediately between the end extremities of said cones.

5. In an ore crusher of the type having axially converging and diverging crusher rings disposed in axial progression and crusher cones disposed within and respectively co-operative with said crusher rings, the combination therewith of means for differentially tilting said crusher cones about the axis of the crusher rings including a drive shaft for said crushercones having an axis fixed in relation to said crusher rings and extending therethrough.

6. An ore crusher having superposed converging and diverging crusher rings,a shaft journalled centrally of said rings, a crusher cone obliquely eccentrically mounted on said shaft to operate with a rotative tilting movement in relation to the converging ring, and a second crusher cone obliquely eccentrically mounted on said shaft to operate with a tilting rotative movement in relation to the diverging ring, the eccentric mounting of the crusher cones being such that as a point on the bottom edge of the lower cone is eccentrically tilted toward its cooperating ring a corresponding point on the bottom edge of the upper cone is eccentrically tilted away from its co-operating ring.

7. In an ore crusher having superposed converging and diverging crusher rings and a shaft concentric therewith, cones obliquely eccentrica lly mounted to rotate about said common shaft on independent axes so that each is tilted and displaced relative to the other in co-operative relation to its respective ring, said cones each diverging downwardly in close-coupled relation, with the lower divergent end of the upper cone overhanging the upper convergent end of the lower cone in. telescopic non-contacting relation permitting the said relative tilting of the cones in their close-coupled relation while directing the crushed material from the upper cone over the outer crushing surface of the lower cone.

8. An ore crusher having a peripheral crushing surface, a shaft mounted with its axis in fixed concentric relation to the axis of said peripheral crushing surface, and a crushing member rotatable about an axis which is obliquely disposed to the'fixed axis of the said shaft and which intersects the shaft axis substantially centrally of the axial length of the crushing member, whereby said crushing member presents a substantially balanced double peripheral crushing cooperain oppositely oifset relation to each other to independently rotate on said shaft and oscillate each about a zone substantially centrally of its axial length within its respective ring, the oblique mounting being such that a point on the bottom edge of the lower cone is tilted toward its cooperating ring as a correspondingpoint on the bottom edge of the upper cone is tilted away from its co-operating ring.v

JACOB JQI-IANNES MORCH.

Images