US1040373A - Centrifugal machine. - Google Patents

Description

W. M'AGHELSBN. DENTRIPUGAL MACHINE. NLIGATION TLLED mum?. w12.

Patenten 0011.8, 1912.

2 SHEETS-SHEET 2.

bte/wmf WALDEMAR IVIICHLSEN, OF JATIBONIQ), CUBA.

To all whom t may concern CENTRI'FUGAL MACHINE.

Specification of Letters Patent.

Patented oet. 8,1912.`

`Application filed January 27, 1912. Serial No. 673,909.

Be it known that I, WALDEMAR MICHEL- i SEN, a'subject of the King of Norway, re-

sidingat Jatibonico, Cuba, have invented Icertain new and 'useful Improvements in `('lentrifugal Machines; and I do hereby `deelare the following to be a full, clear, and exact description ofthe invention, such as Will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an vimproved centrifugal separator, and it consists in the for etlicient constructions, combinations, and arrangey"ments herein Vdescribed rand claimed.

An yobject of my invention is to provide an improved centrifugal separator adapted operation with either pasty mix# tures, as pulp, etc., or sticky, slow-flowing materials, asmassecuite, etc.

v A further lobject of vmy invention is to vprovide an improved centrifugal separatorin "which'the screening walls will be automatically maintained in an open, unclogged condition, a'nd the material :fed therealong with a uniform `vrprogressi ve movement by gravity. .A .further object of my invention is to provide an improved centrifugal separator in whichthe mass of material acted upon will be alternately compressed and loosened, thereby'insuring a thorough and uniform separating action throughout the entire mass. A

In the accompanying drawings forming a part of this application, and in which similar reference symbols indicate correspond- .ing parts in the several v.iews:-Figure 1 is an elevation, with the lett-hand side in centrialV section, illustrating one embodiment ot' my invention; Fig.' 2 is a. lan View on the line 2,-2 ot Fig. 1; and, ig. 3 is a section on the line 3-'-3 of Fig. 1.

Referring to the drawings-1 indicates a central drive shaft provided With a lower step bearing 2, and having rigidly secured ,thereto a drive and upper' hollow head 5.- A stationarily supported feed hopper 6 eommunicateswith i the hollowhead 5, and .rigidly supports a ing shown provided with oo step bearingl Tfor .theupper end ofvthe drive shaft 1; said hopper and bearing loeerating downwardly diver-ging walls .8 an

pulley 3, lower bracket 4,-

9 for causing.

a uniform distribution of the materialfedl to the hollow head 5, and defleeting such material from drive shaft. A series of spindles 10 are journaled at I1, and 12, respectively, into the lower bracket I and hollow head 5, and carry friction gears 13 at their upper ends with a corresponding stationary friction gear 14 on the hopper 6. A screen receptaele comprising a perforated cylindricalV Wall 15 is concentrically secured to each i spindle 10 by upper and ably provided with internal ribs 18. .An independent casing 19 of imperforate material is rigidly secured to said bracket 4 and head l 5 about each screening receptacle, and pro- .70

vided with a rentrant cylindrical partition 20 spaced concentrlcally about said recep-l tacle and terminating in' a downwardlyextending hopper 21; an annular shield 22 being seeuredto the screening receptacle for loosely iin-losing the upper portion of said cylindrical partition. The casing 19 and f hopper 21 are provided, respectively, with outlets 23 and 211 for discharging into any desired receptacles, such as troughs or gut-` 80,

ters. If desired, the discharge outlets from the several casinos can be arranged at different radial distances from the central shaft 1. in order to permit the material from the different screening receptacles to-,be dis 85` charged into separate troughs.

ln my lmprovcd construction, the radii of the 'friction gears 13 and 14 und cylindrical f screening walls 15 are so proportionedthat thel centrifugal force produced on said cylindrical walls by axial rotation rabout their spindles 10, is less than they centrifugal force produced on said walls by their rotation i about the central drive shaft' 1. Byy this.'

construction, the material under treatment is compressed against the cylindrical screening walls 15 by a gradually varying cen-7" trifugal force which is the resultant of the i algebraic sum of the centrifugal forcesdue to the simultaneous axial rotation and revoltion about the central shaft 1. This resultant effective centrifugal force reaches a maximum as the cylindrical screening Wall rotates past its outer positionfarthest from the stepped upper end of'the 55 in engagement 60 lower spiders 16. 65 and 17; said cylindrical walls being preferthe. central drive shaft 1, and becomes nega-A tivel as said wall .is rotated past its inner glsition'nearest t'o said central drive-shaft.

ing repeated rotations past such inner. position, th'e mass of materialunder 'treat- 'ment is loosened from the perforated screening'wall by the preponderance oi the centriugal force due to revolution about the reaches a maximum in the outer position. of i1- said Wall. ltwill be obvious that the intershaft ,1 over that due to axial-rotation about the spindle thereby causing the loosened material tobe progressively fed downwardly along the'screening wall by gravity, and automatically maintaining said wall in open, ,i uncle,f ged condition. Upon continued rotation of the cylindrical screening Wall past its inner position, the internal ribsjlS will insure the lotisened material being efficientlycarrir'ed aldngA until the4 vlatter is` again pressel against the .screening wall by'a gradually increasing centrifugal force which nal'ribs 18 can be given anyl desired :Forney feo i and that'for pulp andother(J nonsticky'ma':

terials, said ribs may advantageously extend spirally or be inclined. By thus alternately compressing and loosening the material un- ',der treatment and automatically maintaining the screening walls inv an "unclogged c0ndition,`an evfiicient separating action will.

be obtained uniformly throughout thev en-v tire mass, and the capacity or output of the' machine maintained at a maximum.

' 'A spout 25 is .provided for directing the material from the hollow head 5. to leach 'screening receptacle; said spout being arranged lto direct the'material slightly below the upper edges of the. cylindrical wall and at points past .the position of maximum centrifugal force on said walls, as shown in Fi s. yl and 2; .thereby insuring an even and uniform distribution of the material over Athe perforated wall 15.' The spouts 25 can be advantageously vformed of copper, or other yielding material, inl order. that .they

Imay be conveniently bent to insure an eilicient-initial disposition of various dierent f 'materials on the cylindrical perforated walls..

I my invention.

' I have illustrated and ,described preferred and satisfactory constructions, but changes could be made within the spirit and scope of" I I Claim 1 "-1. ln a centrifugal separator, the combination' of ,a-drivefshaftupper and lower members secured to said shaft, a series oro screening receptacles journaled in said members, independent easings of imperforate maj@ .several-screening' receptacles, and means car- ,riedby said several oasmgs'for discharging the materials acted upon by .the inclosed screenlng receptacles.

'al secured .toaaid members about said 2. In a centriagalseparator, the combi- Athis materials" acted"upon' by. the incl open bottom vtacles journaled insaid memben'an inde-A pendent casing of imperorate materialsc- .cured to said members about each of saidv wgnationp a .drive shaft; upper and lower `members secured to'said shaft, a series of screenin recepdlesgournaled in' said' members, in ependent casings of imperoratel material'secured 'to said mowers about said several screeningreceptaeles, and means caril ried. bysaid several casingsat different distances from said drive shaft fordishargm screeningreceptacles.

3. ln a centrifugal separator, .the-combination of a drive shatt\,fupper and lower 'members secured to said shaft, a series o1" cylindrical screening .recepscreening receptacles and provided with a rentrant cylindrical partition extending .above ythe open'bottom ofv'said rece tacle,

hollow'head, a step bearing forthe upper end of said shaft rigidly supported .within said hopper and provided with a down-v wardly diverging cap portion, spindles journaled in said bracket and head, cylindrical ported on said several spindles, independent caslngs of imperorate material secured to screening receptacles concentrically supsaid bracket and hollow head about saidsev,-v eral screening receptacles, and coperatingv gears on said hopper and spindles for axially.

rotating said cylindrical receptacles.

5. In a centrifugal separator, the cornbi-v nation of a drive shaft., bearings rigidly car# ried thereby, a spindle. journaled in said bearings, a screening receptacle provided with a perforated cylindrical'wallsupported concentrically on said spindle, internaly ribs' on saidv cylindrical wall, means for driving.

said shaft torevolve said screening receptacle thereabout, andl means for simultaneously rotating said receptacle about its spindlev to produce a ribbed c'ylindrical'w mum centrifugal force produced at said wail by the revolution of the latter about said shaft. f

lntrifugal force at the 6.' ln a centrifugal separator, the'combi-I' less than the ininination of a drive shaft provided with a.

lower step bearing, a lower bracket and an upper hollow head'secured to said shaft, a stationaryv feed hopper communicating with Said hollow head, a step bearing for the upper end of said shaft rigidly supported with-V, 1n said hopper and providedwitha divergfv ning cap, spindles journalcdat their respective ends'in said bracket and head, cylindrical screening. receptacles concentrically 111111110111111 1m said several spindles, interior nbs 011 the cyhndrxcal Walls of sind recep- 1'111111111111. 111011111110105; 't produce n centrifugal force :11 the ribbed cylindrical Walls 'thereof 11155;; 17111111 the 111111111111111 cuurfugnl fom@ prmuced, 011 Saud reci-pwd@ wals by the revolution of the latter about Suid drive Slm'fi'.

In 1951111111115' 'lwnfuf, T. unix 'my signa here, 1111 [110.1111'0 111 lvm whwsszcs.

Y A I ,D [CM AR NIVIC'IIELSEN. \Vtncssos:

J. A. 'V1/msnm F. J 1V A115101 11.

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