US499342A - Centrifugal oee separator - Google Patents

Description

5Sheets-Sheet 1.

(No Model.)

0. 13'. PEGK; GBNTRIFUGAL ORE S'EPARATOR.

Patented June 13,1893.

mums warms co PH (No Model.) 5 Sheets-Sheet 2. 0. B. PECK.

GENTRIFUGAL ORE SEPAEATOR. No. 499,342. Patented June 13, 1893.

Ill v 2% (No Model.) 5 Sheets-Sheet 4.

O.B.PECK. OENTRIFUGAL ORE SBPARATOR.

UNITED ST TES PATENT OP C :13,

TO THE PATENT TITLE COMPANY, OF SAME PLACE.

CENTRIFLUGAL'O'RE-SEPARATOR.

SPECIFICATION forming part of LettersPatent No. 499,342, dated. June 13, 1893. Application filed J'unel l, 1892. Serial 115.436.734. memorial.)-

To all whom it may concern.- 3

Be it known that I; ORRIN B. PECK, a citizen of the United States, residing at Chicago, Illinois, have invented certain new and useful Improvements in Centrifugal Ore-Separators, of which the following is a specification.

The object of my invention relates more particularly to the separating surface'used in centrifugal ore separators, and more specifh cally to making the separating surface vibratory, and means for imparting a yielding or vibratory motion to such separating rim or surface; and my invention consists in the features and details of construction hereinafter described and claimed.

In the drawings, Figure l is a transverse vertical central section of a wheel containing my improvements. Fig. 2 is a plan view ofa cam wheel hereinafter described. Figs. 3 and 4 are vertical sections of portions of the rim of a separating wheel in somewhat different positions. Fig. 5 is a-plan sectional view on line 5, of 'Fig. 4,1ooking in the direction of the arrows. Fig. 6 is a vertical section of a portion of the rim of aseparating wheel taken on the line 6 of Fig. '9; looking in the direction of the arrow, with the separating surface of the wheel in itsinnerposition. Fig. 7 is a vertical section of theseparating rim of the wheel, taken in line 7 of Fig. 9, with the separating'rim in its outer-or normal position. Fig. 8 is a cross section of the rim of the wheel, modified. Fig. 9 is a plan sectional view, taken in line 9 of Fig.6, with the curbing lever and stop shown in dotted lines. Fig. 10 is a transverse sectional view of a separating wheel, modified, and Fig. 11 is a transverse vertical section of a modified arrangement of separating surface andmeans'for supporting and rotating it.

In making my improved rotatable separating wheel for centrifugal ore separators, to eliminate the lighter and more worthless particles from the heavier and more valuable while in a fine or powdery condition, by the action of centrifugal force, I makea wheel A, preferably of large diameter and supported in a suitable frame work, and capable of being rotated by any convenient motive power;

The portion of the wheel extending out from termed the supporting frame work of the wheel, as it is intended to support the separating rimat or near its circumference. This separating rim, as shown in Fig. 1, is preferably formed of a trough-shaped piece B, with its inner edge' turned up into an annular flange b. The supporting frame work of the wheel is also provided withan upturned annular flange a, around which the annular order to impart thedesired vibratory motion to the separating rim of the wheel,in the construction shown in Fig. 1, I have arranged cam wheels'orspider wheels C, mounted on shafts c, rotated by belts driven by the main shaft of the shell, as shown in Fig. 1. As the arms of these cam or spider wheels come around .in their rotation, they successively strike against the outer surface of the separating riin,'and thusimpart a constant vibratory motion to the same. In the construction shownin'Figs. 3, 4 and 5, the separating rim is made of an annular plate, preferably rubber, with itsglower edge inturned and resting under thereceiving plate of the wheel. Around this rubber or flexible separating rim is arranged the supporting back 13*, and between the two are preferably arranged, at suitable intervals, vertical metal strips or plates 1), with rods 19 extending out through the supporting back, provided with heads b Coiled springs are arranged around the rods to hold these heads *out the desired distance from the supporting back. Arranged at suitable distances apart in the curbing are stationary buffers, C, rounded at their corners, as shown in Fig. 5. As the heads b are carried around by the revolutions of the wheel, they strike against the buffers C, and are forced in with a quick sharp blow, thus imparting a tremor or vibration to the flexible separating rim of the wheel.

In the construction shown in Figs. 7,8 and 9, I have shown the separating rim B, made of an inner and outerportiornthe inner being trough shaped, as in Fig. 1. The outer portion of the separating rim, in the construction now under consideration, is made of sections or blocks, and the inner or separating surface of rubber, the blocks being embedded in the rubber, as shown in Fig. 9. The separating rim, in this case, is fastened to the supporting back and frame work of the wheel by eye bolts D and D. The eye bolt D is provided with a rubber cushion (Z, so that the separating rim will be elastically connected to the supporting back. To impart the desired vibratory motion to the supporting rim, I arrange a wheelE in the curbing, supported 011 a shaft extending out through the top of the apparatus, and provided with a pulley, e, by which the shaft and the wheel may be driven or rotated by a belt connected to any suitable motive power. I arrange a lever, F, fulcrumed at f, and embracing the hearing or sleeve in which the shaft of the wheel E ismoun ted. A stop, f, consisting of a set bolt, is arranged in a lug or bracket, as shown, at one side of the lever F, sothat by turning the bolt in or out, the position of the lever, and consequently, the position of the shaft and wheel E, may be regulated ordetermined. The stop is arranged at that side toward which thelever would be moved, by the frictional contactof the wheel with the flexible separating rim. The wheel E impinges against the flexible separating rim, as shown in Fig. 9, to the extent that it cuts into the path of the circumference of the rim, which may be regulated as desired by the set screw f, through which the wheel E may be held at a radial position to the separating wheel, or at a greater or less angle to the radius to adjust the degree that its surface will cut into the path of the circumference of the flexible separating rim. This will bereadily understood from an inspection of Figs. 6 and Q of the drawings, and need not be further dwelt upon. It-will be understood from this construction that as the flexible rim passes around in its course, it will be deflected or bent in by the wheel E.

y In the construction shown in Fig. 10, the shaft of the separating wheel. is provided with two pulleys G and G, connecting it by belts with pulleys on acounter shaft H. The hub of the separating wheelis provided with the rims g and g, which are adapted respect,- ively to engage with the lower and upper ends of the pulleys G. and G', as such pulleys are moved respectively toward the hub. To that end, the pulleys are longitudinally movable on the shaft, and are supported by cross arms, 71., connected to a rodI, and pivotally fulcrumed in brackets i. A belt, I'l', froma pulley on the shaft I-I, engages with a pulley J on a stud j. A stop or stud j is arranged on the rod 1, and acam segmentj is arranged on a disk J, rotated by the pulley J. As the cam segment passes around it-bears against the stop j, and forces it down, and along with it the rod I. A cam K is arranged on the rod I, to bear against a rod 70, carryinga buffer contactible with the flexible separating rim of the Wheel. As the rod I is forced down, the cam K forces the buffer rod 70 in, so as to bring the buffer 70 into contact with the outside of the flexible rim B. As the rod 1 is forced down, the pulley G is forced up into frictional contact with the rim g, and as this pulley is of less diameter than the pulley G, it imparts an accelerated speed of rotation to the separating wheel during the time that the rod I is down and the buffer 7c is in contact with the flexible separating rim of the wheel. The movementof the red I, which brings the pulley Ginto frictional contact with its appropriate end of the hub of the separating wheel, moves. the pulley G out of contact with its end, so as to permit of thisaccelerated speed of rotation. The instant that the cam segment 3' passes the stop j on the rod I, such. rod is thrown up by means of a spring I. This upward movement carries the pulley G in turn into frictional contact with its appropriate end of the hub of the separating Wheel, and throws the pulley G out of contact with its end. At the same time, the buffer-7c ceases to be pressed in by the cam K, and is moved out by a spring on. the rod 70, from contact with the flexible separating rim. As the pulley G is larger than the pulley G, as soon. as it comes in frictional contact with its endofithe hub of the separating wheel, the speed of rotation of the wheel isdccreased.

The operation above described takes place every time that the cam segment J is carried around in the revolutions of the pulley J, so that the separating wheel is successively driven atalternatingspeeds of rotation, and the bufiers k are alternatelyforced in against the flexible separating rim, or released from contact with it, so asto impart a tremor-or vibratory motion to the separating rim each time the buffers lo are brought into contact with it. main at all times incontact with theflexible separating rim of the wheel, and. be forced farther in, so asto impartincreased vibratory motion to the rim at such times, as the speed of the separating wheel isaccelerated, or. increased. By thus alternately driving the separating wheel at a greater or lessspeedof rotation, the particles accumulating on the separating surface during the retardedlspeed of rotation, may be thrown off during the accelerated speed. In this arrangement, therefore both the accelerated speed and the increased vibration of the separating rim cooperate to effect the discharge of the particles which are not thrown off by the normal speed of rotation and vibration of the separating rim.

In Fig. 11 I have shown a modification of If desired, the buffers 70 may remy improvements. In this arrangement, I dispense with the main central shaft, and make the supporting framework A in the form of a ring resting upon anumber of rollers, L,

supported in standards or brackets, L. To impart rotation to the separating surface, I provide the outer rim of the frame work With a series of cogs or teeth I, meshing with the gear wheel, Z, mounted on the end of a'shaft Z driven by a pulley M, which is connected by a belt to any suitable motive power. In this way sufficient speed of rotationis secured to develop the desired amount of centrifugal force. In order to effect the'desired vibration of the separating surface, I arrange the spider or cam wheel G in a standard or bracket at one or more places in the line of its travel, so that its arms or projections will successively contact against ,the separating surface, and impart toit the vibration desired.

To feed the material to be treated upon the separating surface, a material supply pipe N is led into the proper place to deposit the material where wanted, and to supply the desired quantity of water to the material under treatment, to wash and dilute it, a water supply pipe N is led in and provided with a number of perforations, through which the water willbe sprayed on the separating surface;

It will be apparent from theabove description thatvarious modifications in the details of construction by which I' carry out or embody my ideas, may be employed, and I do not therefore desire to limit myself to details of arrangement or construction, further than as Imay specify the same in, my claims.

What I regard as new, and desire to secure by Letters Patent, is

1. In centrifugal ore separators, the combination of a supporting frame work, an independently vibratable separating surface supported on'such frame work, means for-effecting its vibration and means for rotating such separating surface, at different alternating predetermined speeds, substantially as described.

2. In centrifugal ore separators, the combination of a supporting frame work, a separatingsurface mounted on such frame Work and vibratable at desired points in its rotation, means for effecting such vibration at predetermined alternating degrees and means for rotating the separating surface, substantially as described. t v

3. 1n centrifugal ore separators, the combination of a supporting frame work, a separating surface mounted on the frame work and vibratable at desired points in its rotation to different and predetermined extents, and adjustable means for effecting such vibrations at predetermined alternating degrees as desired, and means for rotating the separating surface, substantially as described.

4. In centrifugal ore separators, the combination of a supporting framework, a vibratable separating surface mounted upon such frame Work, means for effecting its vibration,

and means for rotating the separating surface at alternating predetermined difierences in speed of rotation, substantially as described.

5. In centrifugal ore separators, the combination of a supporting frame work, a vibratable separating surface mounted upon such frame work, means for effecting its vibration at alternating varying degrees, and means for rotating the separating surface at alternating predetermined differences in the speed of rotation, substantially as described.

ORRIN B. PEOK.

Witnesses:

THoMAs A. BANNING, SAMUEL E. HIBBEN.

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