US379133A - Charles d - Google Patents

Description

lC, D. SHEPARD. y CENTRIFUGAL LIQUD SEPARATOR.

(No Model.)

No. 379,133.' Patented Mar. 6, 1888.

'UNITED STATES' PATENT OFFICE?.

CHARLES D. SHEPARD, or NEW YoRk,N. Y.

CENTRIFUGAL. LlauiDsePARA-roa- SPECIFICATION forming part of Letters Patent No. 379,133, dated March 6, 1888. I Application filed May 9, 1887. Serial No. 237.612. (No model.)

To all whom it may concern: f

Be it known that I, CHARLES D. SHEPARD, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Centrifugal Liquid- Separators, of which the following is a specification, reference being had therein to the ac- `companying drawing.

stantially central vertical section of a separating-bowl and its immediateaccessories, A-represents the spindle of the machine; B, the upper .portion of the frame-work; C, the receiver for the lighter constituent, which receiver is mounted upon the frame-work and provided with a standard, G', jointed as at C2, for the support of the feed-pipe D,which is'provided in this instance with a controlling-valve, D, and a dischargeconductor, E, and (in this instance) constructed in accordance with myinvention as disclosed inmy application, No. 236,584, pending herewith.

F represents the separatingbowl, which is provided with a neck, F', in this instance arranged at the bottom of the bowl, and having a closed en'd, FZ, inl which the spindle A is seated.

G represents the supply-chamber, secured to the bottom and spindle by a screw or bolt,

G, and provided with a supply-pipe, G2,

which projects toward andnear to the wall of the bowl F. Aseries of annular shelves, F3, extend from the inner surface of the walls of the bowl toward the center thereof, and each shelf is provided with a single port, F4, -that of one shelf being arranged at an opposite side of the bowl from that of the next adjacent shelf. The discharge-conductor E is projected into the bowl and above the upper shelf of the series. The lower shelf projects inwardly beyond the walls F5 of the neck F,'and saidneck is provided at its closed end with one or more ports, F, for the delivery therefrom of a lighter constituent.

The bowl F is provided with an opening or mouth, FT, into which the feed and discharge pipes or conductors D and E are projected.'

is, the distance from the wall ofthe bowl to the edge of each shelf or partitionand the neck isincreased in its diameter, all of which changes are for purposes which I will` now describe.

Although the principal object in view is, as before stated, a material increase in the ra pidity of the delivery of the lighter constituent, and this without injury to its ber or globules, still another object is to limit the lateral thickness or rather extent of the annular body of the heavier constituent of a liquid when the bowl is operating thereupon, and to prevent the lighter constituent from rising above a certain point Within the bowl during this operation.

Now, for the purpose of setting forth and clearly illustrating the operation of my invention, Iwill describe the same-as, for example, in separatingcream from milk.

The milk is supplied through the pipe or conductor D, the quantity being controlled by the valve or cock D', as desired, and it falls into the supply-chamber G, and passes from thence, through the pipe G", into the space formed by the two lower shelves, F3. As the lower compartment of the bowl proper becomes filled the incoming milk will force any surplus upwardly through the port Finto the next compartment above, and so on until all the chambers or compartments are filled, it be- IOO ing understood, however, that immediately upon the entrance of the milk into the lower compartment centrifugal force acts to separate the cream from the milk, so that the latter occupies a space bounded substantially by the compartment-that is. by the wall of the bowl and opposite surfaces of adjacent shelves or partitions, as shown by the dotted line X- while the cream forms in an annular body, indicated by the dotted lilies X and Y, the line Y indicating the inner vert-ical line of the annular body of cream as it is collected by the operation of the bowl. Now itwill be seen that nothing but skimmed milk will be carried to the top ofthe upper slielfof the bowl,and thisis insured by two facts: first, by reason of the separation of the compound liquid into several distinct portions, each being contained between two adjacent shelves, so that nearly all the cream in the milk admitted into thelower compartment is immediately separated, and such portions thereof as pass upwardly into the next compartment are immediately separated, and so on from compartment to compartment, so-that the cream has been sepa* rated from the milk before the latter reaches the upper compartment. The otherI fact, which insures nothing but the entrance of skimmed milk upon the upper shelf, is that of the construction before described, whereby I expedite the delivery of the cream from within the body of the bowl, and this is accomplished inthe following manner: By extending the neck F outwardly beyond the opening F8, through which the neck F'coinmnnicates with thebowl F, I provide for the operation of centrifugal force upon the cream, and said force acts at the point where the cream enters the neck, so as to cause the cream with a greater or less force to move in a radial direction toward the wall F5 of the neck, and thus also to draw down the cream above. The curved portion X of the creain-line indicates the point where the centrifugal force has the effect just mentioned. Now, instead of allowing the cream to immediately escape entirely from the bowl or from the neck while under the influence of centrifugal force, which inliuence would result in destroying the globules of the cicam, it is cushioned by the cream already within the neck, and the injurious effectis obviated; and, furthermore, the cream is delivered from the neck by the action of gravity through the port or ports F, of which I may have one or more, as desired. As the cream passes through the port it falls into the empty receiver rst, but afterward into a greater or less quantity ofA cream within the receiver, and is again cushioned against injury. Itis understood, of course, that the cream falls by action of gravity from the upper shelf down to the opening FS of the bowl, so that in the delivery of the cream from the bowl as a whole I employ, first, the force of gravity, then centrifugal force, and, finally, again the force of gravity. In this way I increase the rapidity with which the cream can be delivered from the bowl without inj uring the globules thereof,

and I also prevent the'cream from rising above the upper shelf within the bowl, so that I can safely project my discharge-conducto]` directly into the bowl, instead of being required to form an additional annular chamber for the reception of the skimmed milk and for the operation of a discharge-conductor therein.

It is apparent that I can increase or decrease the amount of centrifugal force to which I subject the cream by increasing or decreasing the distance to the walls of the neck from the opening by which it communicates with the bowl. As shown by dotted lines C F, I may even ex tend the neck beyond the bowl for the purpose of increasing the centrifugal force upon the cream. I may employ as many or as few shelves or partitions as desired.

Having described my invention and its operation, what I claim is- 1. A bowl for a centrifugal separator, having an annular sheltI and a neck depending from the shelfoutside ofthe inner edge thereof, l

the bottom of the bowl being provided with a cream-outlet, substantially as specified.

2. A bowl for a centrifugalseparator, provided with a depending neck and with aseries of annular shelves or partit-ions, and having its bottom shelf projecting inwardly beyond the vertical walls of the depending neck, said neck having an outlet, substantially as specined, whereby the delivery of the cream or lighter constituent is accomplished, first, by the action ofgravity, then by centrifugal force, and, finally, by gravity.

3. A bowl for a centrifugal machine, with an outlet for a lighter constituent and having a series of shelves or partitions and a depending neck located beyond the inner vertical line ofthe edges of the shelves, in combination with a discharge conductor projected within the bowl and above the upper shelf thereof fordischarging the heavier constituent, substantially as specified'.

4. The combination, with the bowl F, provided with port FG and having the shelves F3, the openings F7 F, and the neck F', having walls F5 outside of the edges of the shelves, of thespindle A, supply-vessel G, having the pipe G, the receiver C, supply-pipe D, and the discharge-conductor E, substantially as specified.

5. rIhe bowl F, provided with ports F0 and having the openings FT F", the shelves F, provided with the ports F4, and the depending neck F, located beyond theinner vertical line of the edges of the shelves, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES D. SHEPARD.

Witnesses:

L. C. HILLS, B. F. MoRsELL.

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