US891271A - Centrifugal machine. - Google Patents

Description

No. 8191,2'71. PATBNTED JUNE 23, 1908. B. LJUNGSTRM. CENTRIFUGAL MACHINE.

APPLICATION FILED JUNE 26.1906.

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GENTRIFUGAL MACHINE.

.APPLICATION FILED JUNE 26. 1906.

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BIRGER LJ UN GSTRM, OF STOCKHOLM, SWDEN, ASSIGNOR TO AKTIEBOLAGET SEPARATOR,

STOCKHOLM, SWEDEN.

CENTRIFGAL MACHINE.

To all whom it may concern:

Be it known that I, BIRGER LJUNGsTRM, a subject of the King of Sweden, and residing at 8 Fleminggaten, Stockholm, Sweden, engineer, haveinvented certain new and useful Improvements in Centrifugal Machines and I doY hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of referhave been used for a short while, it has been found that they willnot work in a` satisfactory manner since the outlets become choked with the solids, so that the liquids cannot pass away. tion is to avoid these inconveniences.

Generally speaking, I accomplish the result by providing devices which are movable in said outlets to drain the liquid from the solids. Said movable device tmay have either a reciprocating or a rotating'motion, whereby, so as to speak, movable outlets are formed, or they maybe moved into and out of the' outlets, or certain parts thereof. In

. the former case, the outlet is formed between the fixed and movable part of the apparatus, which will prevent solids from collecting in said outletsl and in the latter case the outlets will -be cleared' by means of a kind of' scraper. The invention is shown in the annexed drawings in the several forms of construction. Figures 1 and 2 show an'embocliment of myy invention, in which Fig. 1 is a partial section on line 1-1. Fig. 2 is a planview. Figs. 3 and 4 show another embodiment-"ofV my invention, in whichFig. 3 is an elevation, partially in section, on line 3-3, Fig. 4. Fig. 4 is a plan view, artially in section, on line 4 4, Fig. 3. ligs. 5 and 6 show another embodiment of my invention, in which Fig. 5 is an elevation, partially in section, and Fig. 6 is an inverted plan view of Scrapers and Specification of Letters Patent.

Application filed June 26, 1906.` Serial No. 328,444.

The object of my present inven` provided with holes p for t e plates Z.

Patented June 23, 1908.

device to which they vare attached., Figs. 7

and 8 show another embodiment .ot my`invention, inwhich Fig. 7 is a partial cross section through the machine, and Fig. 8^is an elevation of scraper plate and attached Scrapers. F ig. 9 is another embodiment of my invention, shown in partial section. Fig. 10 is another` embodiment of my invention, shown in partial section.

, In Figs. 1 and 2, a are a series of concentric rings, connected together by anges y. c are concentric rings distributed in the spaces between the rings a, said rings c being connected together by flanges d.- The liquid outlets are formed by the spaces b between the rings d. The rings a. are mounted upon, or connected to, a hollow shaft g; Through this hollow shaft g projects the shaft f, upon which is mounted, or to which is connected, the rings c. During the operation of the machines, the two shafts f and g are rotated at different speeds, so that the rings a. and

When

c will move relatively to each other.

the material-from which the liquid is tov be removed is fed in through the upper opening, it will slide along the inclined wall, formed by the rings. The liquid passesL away through the spaces or outlets b, while the solids slide down to the -bottom of the machine and from whence they pass through suitable openings, not shown. 'IfK the solids should enter vthe outlets b, they .would soon pass to the eX- terior of the machine, as they yare compelled to alter their position on accoint of the relative motion of the rings.

In the embodiment of my invention shown in Figs.- 3 and 4, the samefprinciple 'is illustrated as in Figs. 1 andf2 butin this case curvedl plates are,l used.I h are several parts of a compound curved plate, which parts are placed at some distance from each other and secured to an upper plate t and a lower plate k. In the spaces between the' parts h are arranged other curved plates l. The plates l,V are secured to a plate m, connected to a central hollow shaft 'n surroundin a solid shaft o to the top of which the platev carrying the parts 71. is secured. 'The When the machine is in operation, the two shafts n. and o are rotated at the samerateof speed, but during said rotation are relatively reciprocated in4 axial direction, by means not lates fl and k arement of my invention is shown. This con# struction is somewhat sim'ilar` to that shown in Figs. 1 and 2. The rings w are separated from one another by spaces w', which, however, in this case are very narrow. Instead of rings, moving in said outlets, Scrapers t 4the use of curved plates 5.

are arranged therein, which, preferably, have their edges inclined, as shown in Fig. 6. The Scrapers are connected together and secured to the plate v by means of ribs or flanges u, said plate being connected to the shaft The other shaft z is connected to the rings w. The solids which collect in the outlets lw will soon be removed by` the Scrapers t, which move in said outlets owing to the shafts w and z rotating at different speeds.

In Fig. 6, the plate o, with the scrapers t, is shown from below.-

The construction shown in Figs; 7 and 8 differs from that shown in Figs. 5 and 6 in The latter is provided with slots 6 in which are arranged scrapers 7. The said Scrapers are secured to a plate 8,` and the plates 5 may be 'secured to a lower disk 9 and an upper disk 10, which are connected to one shaft, while the disk 8 may be connected to another and'concentric shaft, the shafts being revolved at same rates of speed and given a relative recipro-` cating motion in an axial direction, as stated with respect to Figs'. '8 and4.

In ythe construction shown in Fig. 9, 12 designates a conical drum, secured to the shaft 13. tures 14 in which are located pins 15, se-

cured to a plate 17, mounted o n ay hollow shaft 18, surroundin the shaft'13 carrying 'the drum. The sha ts\13 and 18 rotate lat the samespeed, but have a relative reciprol catingmotion in an aXial directionl by mechanism not shown. If the pins 15 only move in the apertures 14, a form of movable outlet is formed', but if, on the' other hand, they move com letely into and out of said apertures, inw ich case the latter must be of very small dimensional in order 'to prevent ythe solids escaping directlytherefrom,the saidpins will act as scrapers and force out the solidswhich have collected in said apertures 14.

In Fig. 10, another embodiment of my invention is shown. In this case, the material is carried along the inner wall of a series of Said drum is provided with aper-k rings, forming a cylindrical drum 20, byy ymeans of a screw.

20 designates the drum and 21 the annular openings between the rings of the drum.

i l28 is the hollow drum shaft and 22 a solid shaft therein, carrying a plate 23, supporting an inner drum 24. The latter is provided collect in sai( openings', will be forced out therefrom by means of the sc apers 27.

Having now fully describe my invention, `what I claim and desire to protect by Letters Patent is':4 l

1. The combination, with centrifugal machines for drying purposes, having outlets for draining the liquid from the solids, of devices movable in said outlets to clear them from solids.

2. The combination, with centrifugal machines for drying purposes, having outlets for draining the liquid from the solids,l of devices within said outlets and movable relative to said outlets to clear said outlets fromv'solids.

8. The combination, with centrifugal machines for drying purposes, having annular outlets for draining the liquid from the solids, ofdevices movable in said outlets ,to clear them from solids.

4. The combination, with centrifugal machinesl for drying purposes, having annular outlets for draining the liquid from the solids, of'inclined devices movable in said outlets to clear them from solids.

5.l The combination, with lcentrifugal machines forv drying purposes, provided with outlets for draining the iquid from the solids, of a conveying device to carry the material through the machine, and scrapers secured to said conveying device'v and movable in said outlets.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

BIRGER LJUNGSTROM.

Witnesses.:

IIJ. ZETTERSTRM, HARRY- ALBrHN.

with one. or more helical blades 26, inclined Scrapers y27 projecting into the afore- The two shafts 28 and 22

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