US1478660A

US1478660A - Centrifugal separator

Info

Publication number: US1478660A
Application number: US438537A
Authority: US
Inventors: Barnes Gerard Charles; Morgan James Roberts
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-01-20
Filing date: 1921-01-20
Publication date: 1923-12-25
Anticipated expiration: 1940-12-25

Description

Dec. 25 193;

G. C. BARNES ET AL,

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:l AND JAMS ROBERTS MORGAN, OF COOGEE, NEW' SOUTH WALES, AUSTRALIIIA.

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Application filed January 20, 1921. y Serial Ifo. 438,537.

To all whom t may concern: l* ABe it known that we, GERARD CHARLES BARNES and JAMES ROBERTS MORGAN', subjects o'f the King of Great Britain -and Irelandyresiding at Taormina, Coogee, in the State ofsNew South Wales, Commonwealth of Australia, and VVarilda,Coo gee, in the State of New South Wales, Commonwealth of) Australia, respectively, have invented new and useful Improvements in Centrifugal Separators, of which the following is a specification. y This invention relates particularly to centrifugal separators for the treatment of sugar, grain, coal,/v water, sewage, and other substances for `the purpose of separating the li uid or semiwliquid constituents from the so id constituents or for separating solid material into grades of different sizes. The object ofthis mvention is to provide a centrifugal separator, for the purposes set forth, that may be worked continuously, that is simple in construction and is efcient in operation.. And this invention relates particularly to centrifugal separators with a horizontal axis supporting a rotating spiral or helix and a rotating filter basket or cas-k ing surrounding said spiral or helix. These improvements comprise (a) differentially rotatingfthe spiral and the casing'from one drivingz oint and means for effecting the same (b feeding the materialr to be treated into the machine through a hollow central axis; Y(c) means whereby the oint of entry .of the material to be treated) may be adjusted; (d) improved means for, if necessary, washing'anddrying the material under treatment; (e) an improved construction of filter basket or screen, and (f) the combination vof the parts set forth with the other parts of` the machine and with each But in order that the invention may be Jreadily understood it ,will now be described with reference to the drawings accompany-.ly

ing and forming-part of this specification in which is illustrated a separator adapted for the treatment o f sugar or the like.

Fig. 1 is a longitudinal section of a centrifugal separator embodying these improvements.

`Figs.2, B and`4are transverse sections, on lines a-a, bb, and c-c respectively of Fi l. Fig.n 2a is a detail view of the joint between a main frame member and segmental frames. l

Figs. 5 and 6 are a detail side sectional elevation and underneath plan, respectivel on an' enlarged scale, showlng means for a justingthe point of entry of the material being fed into the machine.. Fig. Z is a sectional plan showing an arrangement of pipes forl water and air.

Fig. 8 is a perspective view of portion of the main frame of the basket, and

Fig. 9 is a perspectiveview of a removable segment` of` the frame of the basket.

The centrifugal separator has a fixed hollow shaft 10 carried by"standards 11. End discs 12-13 having'bosses 121-13a respec- -tively arefcarried by and run freely upon bearings 11i.

yIntermediate the discs 12-13 are screw threaded stay rods or braces 15 upon which are clamp nuts 16 to secure the blades of a spiral orhelix 17,the spiral being preferable in order that the travel of the material being treated may be assisted and regulated according to the incline of the cone of the basket. rlhe boss13a of the disc 13 is integral with a box casing or extension 18 that surrounds the adjacent end of the hollow shaft, the casing running on a bearing 18B. A portion of the exterior ofthe vcasing 18, carries or is shaped as a pulley 19 for driving purposes. Outside the discsA 12-13 are other similar discs 20'-21 the bosses 20el and 21t1 of which run freely upon bearings about the bosses 12a and 13 respectively. The vdiscs 20-21 are connected b y longitudinal frame bars 22 that are provided witjh flanges 22a tohform seatin s for segmental frames-23 which, when assembled, constitute the basket or screen. Theseg` ments23 are secured imposition in any ap propriate manner. Gauze or nettingV or otherfiltering or grading material 24 of suitable mesh lies against the -inner faces of the segmental frames 23 and is'secured in position byl being clamped between said `frames and the frame bars 22. The gauze 24 will not extend to the end of the casing but will be stopped short so -as to provide' I a way for the free passage of the separated\- or the treated material. l A

Fast upon the shaft 1'0 within the box .casing 18 is a gear wheel 26 in mesh with another gear wheel -27 on a spindle 28 in a bracket bearing 29'carried by the casing 1 8.,

` slidable gate 41 wherebythe point f entry The box casing 18 is cut away between the bracket bearings 29 to admit the wheel 27 which is counterbalanced by the weight 30. Fast on the spindle 28 is a worin 3l in. mesh with `a worm wheel 32 on a spindle 33 carried 'in bearing 34 which is an extension of one of the bracket bearings 29. Fast upon the spindle 33 is a bevel pinion 35 in mesh with a crown wheel 36 integral withthe boss of the frame 21.

At the forward end of the hollow shaft- 10 is a hopper`37- in the bottom of which is a feed screw `38'mounted on a spindle 39 and adapted to bedriven by a 4pulley 40.

the forward end is cut away as at 42 to form a feed opening which is provided with a of the material that is being fed through the feed opening 4 2 may be adjusted. The under face of this gate 41 is provided with a rack-43 that meshes with a pinion 44 yon a spindle 45 which may be manipulated by a knurled head 46, thus enlarging or diminishin the area of the feed opening 42.

ithin the iixedfshaft 10 are two pipes 47 and 48 connectedwith sources of supply at the discharge end of the apparatus. The pipe 47 is in communication with say water or other liquid supply and intermediate the ends of the frame connects with a pipe 49 outside 'the tubular axis, lthepipe 49 being perforated to form a spray. The pipe 48 connects with say a compressed air reservoir or steam supply or the like and, nearer the discharge end ofl the separator than the pipe 49 it is connected 'to a spray pipe 50.

The whole of the rotating portion of the machine is enclosed within a Acasing 51 which is suitably divided into receiving chambers or hoppersY and provided with -discharge outlets 52 and 53.

When power is applied i to the pulley 19 the spiral 17 and the casing 23 will be simultaneously rotated but the casing 23 will be retarded or accelerated by means of the gears 26-"27, worm 31, worm wheel 32, pinion 35 and crown wheel. 36,thus causing a dierential movement so that the contents of the separator are moved slowly towards Y its discharge end.l

- 2 The material to be treated is dumped into thevhopper 37 and fed by the screw 38 to the feed o ening 42. The gate 41 is adjusted so that t e material will enter the machine at the desired point. When the material passes into'the rotating separator i't vwill be held against the filtering or gradingl material 24 by centrifugal-force' and by -reason of the o0di'erential movement' between the spiral 17 and 'the outer casin 23, it will be gradually movedAtoward-theA ischargeend of the ma As the material undei'g` treatment is` chine. vfed toward the discharge end, it may be washed by a spray from the pipe 49 the The bottom portion of the hollow axisxat liquid passing through the gauze 24 and outlet 52; it'mayl then be dried by means of an air blast from the pipe 50 ntil the product is discharged and passes tlirough outlet 53 into suitable receptacles. We claim 1. In acentrifugal separator, the combination of a vfixed shaft, a frame mounted for .rotation on said shaft and carrying a helix, a casing mouiited'for rotation onsaid frame, said frame having a hollow extension projecting longitudinally from one end thereof helix, a casin mounted for rotationon saidv frame, said rame having a hollow extension projecting longitudinally from one end `thereof and provided with meansfor receivin'g rotar motion,a gear wheel secured to said sha t, a spindle supported ,from said extension and carrying a gear wheel in mesh with said 4first gear wheel, a worm on said spindle, a worm Wheel`suppor'ted by said extension in mesh withl said worm, a crown wheel integral with the casing, and a pinion for imparting motion from said worm wheel to said crown wheel. v

.3. In a centrifugal'separator, the combination of a fixedshaft, afraine mounted for rotation .on said shaft and carrying a helix, a casing mounted for rotation on said frame, said frame and casing being oflarger .diameter at one endthan at the other, said'l no from one end thereof. an, i

frame having a hollow extension projectin longitudinal y provided with means for receiving rotary a spindle-supported from said extension an carrying a gear wheel in mesh with said first 'gear wheel, a worm on said spindle,`\a worm wheel supported by said extension in mesh with said worm, and gearing between said worin wheel and the casingfor imparting differential moti/on to said casing and frame.

4. In a centrifu al separator, the combination of a tubular xed shaft, a helix mounti ed for rotation .on said shaft, means for feeding material'in'to said shaft, said shaft hav- 'ing an elongated 'discharge opening rwithin said helix, a slidable gate for closin said opening, and means for operating sai gate.

5. In a centrifugal separator, the combinamotion, a gear wheel securedv to said shaft tion of a tubular fixed shaft, a helix inounted for rotation'o'ii said shft,vinea.ns ,for feedthereby to operaie vsai gate.

img material into sai sha, said shaft havin an elongated discharge opening within sald helix, a siidabie ate for ciosmg said opening, said gate being provided with a rack, a pinion in engagement with saici saofg and means for manualir iotating said pinion 6. iin a centrifugal sepaiatoi, iie combimation oi a iixed faubuiai simio, means foi 4eeding material into said siiai oi e-eiil thereofsaid shaft having a diseiiarge pero ing adjacent ibo said eiioi, a paie of pipes and a pair of spray pipes outsi e ofi saisi` shaft and each in communication with one .of said medium-conveying pipes, saioi spray pipesbeing oeateci at different positions ion-l giiudiiiaiiy of said shaft., Y

lfm ihestimony whereof we have signed om mames to @his speeiiicaaon.

GERARD CHARLES BARNES JAB/EES RQBERTS MRGAN.