US423285A - Machine for agitating liquids - Google Patents

Description

(No Mdem R. SMITH & P. DI-LLON.V MAGHINE POR AGITATING LIQUIDS.

Patented Mar. v11, 1890,

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*PETERS Pholo-Umognphor. Wnhingtnn, D. C.

e UNITED STATES PATENT OFFICE.

RICHARD SMITH, OF SHERBROOKE, QUEBEC, CANADA, AND PETER DILLON, OE LAVRENCE, MASSACHUSETTS.

MACHINE FOR AGITATING LIQLIJIDS.

SPECIFICATION forming part of Letters Patent No. 423,285, dated March 11, 1890.

Application filed September 30, 1889. Serial No. 325,582. (No model.)

To all whom, it may concern: tional elevation. Fig. 2 is a plan of an agi- Be it known that we, RICHARD SMITH, of tator embodying our invention. Fig. 3 is a Sherbrooke, county of Sherbrooke, and Provdiametrical section of the saine, showing a ince of Quebec, Canada, and PETER DILLON, slight modification in the form.

5 of Lawrence, in the county of Essex and State In the herewith-annexed drawings, 2f rep- 55 of Massachusetts, United States of America, resents an agitator as an entirety located both citizens of the vDominion ot' Canada, within a vat or other liquid-tight receptacle have invented certain new and useful Im- 3, in which the stirring or agitating process proveinents in Agitators; and we do hereby or operation is to take place. Said agitator Io declare the following to be a full, clear, and is composed of a fixed casing and arotary 6o exact description of the invention, such as head. The latter is to revolve, preferably, in will enable others skilled in t-he art to which horizontal planes, and to such end a vertical it appertains to make and use the same, refshaft 4 is provided, which is to be continuerence being had to the accompanying drawously revolved by some prime motor. This I5 ings, and to figures of reference marked shaft is to be properly stepped at 5 in the vat, 65 thereon, which form a part of this speciiicaand has securely fastened upon its lower end tion, the rotary head 6. The latter is to be ad- This invention relates to apparatus for stirjusted to revolve a slight distance above the ring or mixing liquids or liquid material of bottom of the vat. Said agitator consists of 2o every description. a lower circular plate or disk 7, preferably 7o The object of our invention is to produce horizontally placed. Upon the upper suran agitator which is of simple construction, face of said disk are disposed metallic blades and yet one that will create a rapid, contin- 8, obliquely positioned, but set upon their uous, and thorough circulation of the liquids edges and at right angles to the surface of 2 5 Op liquid material in process. the disk 7. Said blades extend from the cir- 75 This agitator consists, primarily, of a rocumference of the latter inwardly but a short tary head composed of an imperforate lootdist-ance,while the disk is curved or rounded vtom or circular disk, upon the upper surface at its junction with the shaft to facilitate the of which are fastened a number of vertical passage of the liquids.

blades obliquely disposed and extending from i Firmly bolted to the bottoni of the vat is 8o the circumference inwardly a short distance. placed a ring or casting 9, the inner diameter The disk is centrally affixed upon a shaft to of which is slightly greater than the outer dibe continuously rotated. The rotary head is alneter of the head. Upon. this ring are cast located within a stationary circular casing or otherwise secured a series of vertical abutprovided with a series of deiectors likewise ments or detlectors l0. Said de fiectors are 85 obliquely disposed, but oppositely of the obliquely positioned and oppositely to the blades on the head. VSaid head is further blades upon the head. Above said deiiectors partially inclosed by an annular band of a and resting on their uppermost edges is afwidth suflicient to cover both the bladesand fixed a circular band l2, of a width sufficient the deflectors, being attached to and resting not only to cover the detlectors, but to eX- 9o on the upper edges of the latter. Thus the tend over and conceal the blades upon the agitator is providedby such construction with head. Thus a portion of the agitator-that a central feed or inlet opening upon its upnearest the shaft-is left opened or uncovered, per side and with discharge-orifices upon its and thus this space may be varied-as circumcircumference. stances dictate.. 95

Further peculiarities of construction, as Since this agitator 1s operated on the prinwell as the mode of creating a circulation of ciple of the effects produced by rotary movethe liquid material in which said agitator ment, it will be seen that the upper uncov- Inay be placed, will be hereinafter described. ered portion of the .agitator serves, in con- 5o The drawings represent in Figure l. a nection with the .oblique blades, as an inlet- 10o i aperture 13, while the covered portion formed by the bottom disk of the head, the blades thereupon, and the overlapping circular band 12, creates ducts 15, which discharge into the circular casing by passages between its deiiectors, said passages being indicated at 16. In the operation of the agitator these stationary deiiectors serve to co-operate with the revolving blades. Thus the tendency of the liquid particles to travel in horizontal planes is overcome and the liquid'particles directed against the deflectors have their motion changed from rotary to straight-line 1novement. As a consequence the liquid particles ring or mixing liquids or liquid material, conare expelled outwardly and radially from the casing.

In Fig. 3 is shown a slight modification of the shape of the ring or casting 9 and the circular band 12 in cross-section. Both such elements are slightly dished or bent upwardly, as indicated. The object of such form is to induce .an upward oblique movement to the liquid particles in motion as ishaft, an imperforate disk or bottom secured thereto, a series of blades positioned edgewise on its upper surface, a circular casing they'emerge from the stationary casing by Way of the discharge-apertures 16. In this manner, ifdesired, the efficiency of the agitator can be increased, as it aids in maintaining the circular movement of the liquids or liquid -material in Vertical planes and prevents such liquid from being expelled directly toward the walls of the receptacle or ting composed of a circular ringa series of from moving in horizontal circular planes.

From the above arrangement it will be readily seen that when the agitator is continuously rotated liquid particles in the vat will at once be influenced, since owing to the centrifugal action produced thereby said particles will be directed outwardly by the oblique blades and forcibly expelled through the ducts.l or discharge-aperturesv formed by the bottom 7 of the head, blades 8, and band 12. As such liquid particles are displaced from theV center, others induced by gravity pass into the upper uncovered portion 13, termed the inlet or feed aperture, and at once have a rotary divergent motion imparted to them, such movement being constantly accelerated as they approach the circumference of thefrevoluble head. When such particles composing the liquid leave the head, they are forcibly expelled and directed against the deflectors with the resultant effect that their circular horizontal movement is changed to radial movement and with an upward tendency after leaving the casing, duc to the flow of liquid particles toward the shaft 4. By

such revolution and action of the agitator a continuous stirring or mixing of the liquid or liquid material is created in vertical planes, and as indicated by the arrows inthe drawings. l

In the drawings we have shown the casing with a circular ring resting upon the vat; but

this may be omitted without affecting the operation of the agitator, since the deflectors purpose as the said ring 9.

What we desire to claim is l. The improvements in apparatus for stirsisting of a fixed circular casing with a series 4of blade-like detlectors, combined with a revoluble head partly inclosed by said casing, a

`series of straight obliquely-fixed blades upon said head, and a central feed and a circumferjential discharge, substantially as and for pur- `poses described and specified.

2. An agitator composed of a revoluble furnished with upright detlectors co-operating with said blades, kand a circular band which covers both deflectors and blades, substantially as herein stated.

3. A revoluble agitator having a fixed casdeflectors on its upper surface and a circular band which rests above and extends inwardly therebeyond, combined with a disk, a central shaft, the blades oppositely positioned tothe Vdeflectors, a central inlet 13 for vertical feed. ,and the passages 16 for horizontal outfiow, substantially as set forth.

4. An agitator adapted to be rotated., by a central shaft and provided with a central inlet 13, connecting with a series of ducts l5, created by an imperforate bottom disk, a series of blades thereupon, and a stationary circular band extendingv over said blades, combined with a circumferential discharge formed by a fixed circular casing, a series of deilectors, and a circular band which rests above the latter, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses. RICHARD SMITH.

PETER DILI.ON.

Witnesses:

' H. E. Lonen,

FRANCIS C. SrANwooD.

can` be bolted directly to the vat-bottom, in =which event the latter would serve the same

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