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Description

(No Model.) 2 Sheets-Sheet 1.

0.13. PEGK.

GEINTRIFUGAL SEPARA-TOR.

No. 560,629. Patented May 19, 1896.

177 Me)? for,

(No Model.) 2 Shgets-Sheet 2.

- 0.3.PE0'K.

GENTRIFUGAL SEPARATOR. No. 560,629. Patented May 19, 1896.

AN REW BLRAHAM. PHOTO-LITHO.WA5HINGTON. D11,

. STATES ATENT Prion.

ORRIN B. PEOK, or CHICAGO, ILLINors, ASSIGNOR To MELINDA PECK, or

SAME PLACE.

CENTRIFUGAL SEPARATOR.

srnorrron'rrow forming are of Letters latent No. 560,629, dated May 19, 1896.

Application filed March 28, 1894. Serial No. 505,419. (No model.)

To aZZ whom it may concern: i consequently the intensity of vibration im- Be it known that I, ORRIN B. PECK, a citiparted to the separating vessel, may be vazen of the United States, residing at Chicago, ried as desired. in the county of Cook and State of Illinois, Upon an intermediate beam of the frame 5 3 5 have invented a new and useful Improvement are secured, on opposite sides thereof and in Centrifugal Separators, of which the folsurrounding the shaft A, short externallylowing is a specification. threaded sleeves c, carrying internally- My invention relates more particularly to threaded collars c, which are secured against centrifugal ore-separators,its principal object rotation by means of set-screws. These col- 6:) 10 being to provide a vibratable separating veslars have upon their outer surfaces annular sel or bowl, rotatable in a horizontal plane, grooves to receive sets of antifriction-balls D, in which substances of different degrees of interposed between them and collars D, havspecific gravity, in a finely-divided state, are in g corresponding grooves, loose on the shafts. continuously separated by the action of cen- Between these and collars cl, secured to the 6 5 I5 trifugal force and separately discharged. I shaft by set-sorews to rotate therewith, are attain this object by use of the mechanism elasticblocks dd ,preferablyofrubber,which illustrated in the accompanying drawings, in serve, respectively, as a spring, compressed whichby the upward movement of the shaft to aid 7 Figure l is an elevation of the machine, the gravity and accelerate its downward move-. 70 2o separating vessel being shown in section. ment, and as a buffer or cushion, to receive Fig. 2 is a detail showing a side elevation of the percussive shock of the shaft in its downcain-wheel b. Fig. 3 is an elevation of a modiward movement, imparting the desired vibrafication, the separating-bowl being shown in tion to'the separating-surface. The tension section. of the spring or cushion d or its resistance to 75 2 5 Like letters of reference refer to similar the upward thrust of the collar d may be vaparts throughout the several figures of the ried by changing the position of said collar, drawings. and also the threaded collar 0 upon the shaft A designates a supporting-framework, in and sleeve, respectively, while the distance the cross-beams of which a vertical shaft A of the shafts downward travel may be ad- 8o 0 is journaled for rotation and also for longijusted within the desired limits by the simitudinal movement. This shaft is rotated by lar movement of the collars of cushion or bufmeans of a pulley a, driven by a belt from a fer 61 The head may be removed, as worn pulley on a suitable counter-shaft. Upon the by the action of the cam-wheel, and replaced top of shaft A is mounted the rotatable sepby a new one, and may also be adjusted ver- 8; 3 5 arating vessel or bowl B, made of sufficiently tically upon the shaft to prevent its striking thin material to allow its separating-surface the lowerportion of the cam-inclines in its B to be readily vibrated by the concussions downward movement. to which its supporting-shaft is subjected. On the top of the separating vessel is an On the lower end of the shaft is located a inwardly-extending ring or annular plate E, 0 0 preferably removable head or contact portion from which depends a circumferential. parti- 12, secured thereto by a set-screw, which is ention E, being for the most part substantially gaged and given a movement of vertical reparallel to the separating-surface, forming a ciprocation by the inclined cam-surfaces on covered channel orpassage, serving to deflect thevertical cam-wheel b. This cam-wheel b" or guide the material along near said surface, 9 5 45 is mounted upon a horizontal shaft 0, Sup and also to retain a body of water within the ported in hangers from the bottom of the vessel for the purpose of submerging the ma frame, and rotated bya cone-pulley O, driven terial thereon. Both the ring and the partiby a belt from a similar cone-pulley located tion or deflector are preferably of sufiiciently upon a convenient counter-shaft. By shiftthin light material to yield to the concussions mo 50 ing this belt upon the surface of the pulley of the liquid within the vessel caused by its the speed of rotation of the cam-wheel, and vibration. The material to be treated is supplied by a pipe 6, extending to a point near the bottom of thevessel through a hole in the upturned central portion of the deflector. A pipe 6 delivers a liquid, preferably water, upon the inner surface of said deflector.

Upon the exterior wall of the vessel is an outwardly-extending circumferential pocket or receptacle F, the vertical. distance between the walls of which gradually diminishes, and over the opening in the wall of the vessel which communicates with the pocket is a circumferential plate F, covering the greater part of said opening and leaving only a narrow passage f into the pocket. This plate is capable of vertical adjustment by means of set-screws passing through vertical slots f therein and securing it to the wall of the vessel. In the outer wall of the pocket at its most contracted portion, near the point where the upper and lower walls intersect, are a series of orifices G,through which heavier material entering by the passage f is discharged. Upon the plate F are a series of inwardly-extending passages or tubes G,passing through vertical slots 9 in the deflector and opening into the pockets or receptacles.

These tubes serve to introduce clear liquid' from the inner surface of the partition to the pockets F, aiding in the discharge of the heavier material and preventing the lighter from being forced in through the passage f. In the upper part of the walls of the vessel are orifices II, through which the lighter material passing upward over the plate F is discharged. The size of these orifices may be varied by means of screws H, passing through the deflector, the pointed ends of which may be adjusted toward and from the wall of the vessel, thus diminishing or in creasing the area of the passage. About the discharge-orifices G and H are annulartrou ghs g 72., into which heavier and lighter material, respectively, are discharged and conveyed away by pipes g and 77,

The modification illustrated in Fig. 3 shows another means for imparting vibration to the separating-surface. In this case the vertical shaft A is rotated by means of the belt-pulley a upon its upper extremity. At the lower end the shaft has splined thereto, to allow Vertical movement, a crown-cam I, having a series of inclines upon its lower face, resting upon and registering with a series of corresponding inclines upon a similar cam I, supported in a chair in the lower part of the framework. Above the cam I is an internally-threaded collar 2', movable on a thread upon the shaft, and secured against rotation by a set-screw. Between this collar and the top of the cam is interposed a strong spiral spring 2'. The lower cam 1 rests upon an elastic block or cushion K, preferably of rubber, supported upon the plate K, which is hung by bolts from the top of the chair. Upon the upper cross-beam of the frame is secured the externally threaded sleeve L, surrounding the shaft, upon which is an internally-threaded collar L, secured against rotation by a set-screw. The collar L has in its lower surface an annular groove to receive a series of antifriction-balls i, interposed be tween it and a collar Z, loose on the shaft and having a corresponding groove. Below is a collar I. fixed to the shaft, and between L and Z is the spiral spring Z encircling the shaft. This spring Z serves the same purpose as the elastic block d of Fig. 1, being compressed as the vertical shaft is forced upward by the rotation of the cam I over cam I, and accelerating the downward movement of the shaft when the ends of the inclines are reached. The spring '0" and the elastic block K permit the two cams to yield slightly upon the concussion produced by the downward movement, giving a short sharp upward return of the shaft, effectively vibrating the separating-surface. The resistance of the springs Z and t" are varied by changing the position of the collars L and 6, respectively, while that of the block K is varied by raising or lowering its supporting-plate by means of the nuts on bolts 70.

The other features of the apparatus are substantially the same as those already described in connection with Fig. 1.

The operation of the device is as follows: The material to be treated is introduced into the separating vessel through the pipe 6 in a finely-divided state and mingled with a suitable amount of liquid, preferably water. Here it is separated by the action of centrifugal force aided by the vibrations of the separating-surface produced by the percussive contact of the cushioned parts or buffers 011 the vertical shaft, most of the heavier material being precipitated upon the separatingsurface, part of the lighter remaining suspended in the liquid nearest the axis of rotation. The effect is to arrange the precipitated material in two layers or strata, the heavier nearest the separating-surface. As these layers are moved up the wall of the vessel by centrifugal force they come in contact with the sharp edge at the bottom of the plate F, which is so adjusted for the speed of rotation employed and the particular material under treatment that this edge will come in the plane between the layers, dividing them and directing the heavier through the passage into the pocket F, from which it passes, mingled with the clear liquid introduced through the tubes Gr, through the orifiees G and into the surrounding trough, from which it is conducted to a suitable receptacle. The lighter material, together with the clear liquid flowing in through slot 9, passes upward over the dividing-plate, which thus serves to prevent its entering the pocket F, and is discharged through the upper orifices H and conducted away by the trough 7t and pipe 7L2. The size of these orifices is so adjusted that the discharge therefrom shall not be of such quantity as to cause heavier material to be dragged along by the strength ICC of the current an d discharged with the lighter. It will be seen that the plate F serves as a divider or cutter to separate the strata of the material and also as a shield to protect the heavier from the lighter material at and after the separation. The clear liquid is introduced in such quantities through pipe 6 that its passage through the slots in the deflector will give a sufficient amount in the channel or passage, in connection with that introduced with the material, to nearly fill the same, causing the complete submergence of the material under treatment. The yield of the defiector and its supporting-ring serve to cushion the movements of the body of liquid in the vessel, which are caused by the shocks imparted to it, and prevent their being sufficiently violent to remingle the strata of separated material. If desired, a series of separated pockets or receptacles might be employed instead of the continuous annular one described.

It is obvious that many changes and modifications in the details of construction of the various parts of the mechanism herein described may be made, as desired by the constructor or to best suit the varied conditions under which the machine is operated, without departing from my invention.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a centrifugal separator, the combination of a rotatable vessel provided With a sep' arating-surface upon which material is in a submerged state, means for imparting shocks or vibration to said vessel, and a yieldable portion serving to retain a body of liquid over the separating-surface, substantially as deor vibrations to said vessel, and a partition or deflector supported upon the top of the vessel, said partition being of sufficiently thin material to yield to the movements of the liquid, substantially as described.

3. In a centrifugal separator, the combination of a rotatable vessel in which material is separated into strata of heavier and lighter substances, a deflector within the same for the material to be separated, a divider for separating the heavier strata from beneath the lighter, discharge-orifices for the lighter substances, and means carried by the deflector for controlling the flow through the same by varying their size, substantially as described.

4. In a centrifugal separator, the combination of a rotatable vessel provided with discharge-orifices, and a deflector within said vessel for the material to be separated carrying means to vary the size of the orifices, substantially as described.

5. In a centrifugal separator, the combination of a rotatable vessel, a partition or deflector attached to the top thereof, and rotatin g therewith, a liquid-feeding pipe delivering upon the inner surface of said partition, and a material-feeding pipe extending through such partition to a point near the bottom of the vessel, substantially as described.

6. In a centrifugal separator, the combination of a rotatable vessel provided with one or more pockets or receptacles to receive sep arated material, one or more plates for covering said pockets, tubes carried thereby communicatingwith the pockets, a partition or deflector within the vessel, and openings in such partition through which the tubes extend, substantially as described.

ORRIN B. PEOK.

Witnesses:

M. L. ALLEN, R. H. GARMAN.

Correction in Letters' Patent No. 560,629.

It is hereby certified that Letters Patent No. 560,629, granted May 19, 1896, upon the application of Orrin B. Peck, of Chicago, Illinois, for an improvement in Centrifugal Separators, were erroneously issued to Melinda Peck as sole owner of the invention; whereas said Letters Patent should have been issued to The Patent Title Company, of same place, said The Patent Title Company being assignee, by mesne'assignments, of the entireinterest in said invention, as shown by the assignments of record in this Office; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed, countersigned, and sealed this 23d day of June, A. D. 1896..

[SEAL] J N O. M. REYNOLDS,

Assistant Secretary of the Interior. Oountersigned:

S. T. FISHER,

Acting Commissioner of Patents.

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