US1643441A - Centrifugal-separator basket - Google Patents

Description

Sept. 27, 1927- w; J L'ANCHARD CENTRIFUGAL SEPARATOR BAS KET Filed June 1, 1925 2 Sheets-Sheet 1 INVENTOR.

Sept." "27, 1927. v

v W. J. BLANCHARD CENTRIFUGAL SEPARATOR BASKET 2 Sheets-Sheet 2 Filed June 1, 1925 1N! 'EN TOR. I GIG/far ffi/anc/zarl I Patented Sept. 27, 1927.

UNITED STATES WALTER J. BLANCI-IARD, OF CLEVELAND, OHIO.

CENTRIFUGAL-SEPARA'IOR BASKET.

Application filed June 1, 1925.

The present invention relates to centrifugal separator baskets and more particularly to a separator basket construction adapted for automatically and continuously separating certain materials having different specific gravities. The present basket makes use of the principle of balanced columns, which may be best illustrated by considering a tube bent to the shape of a V with both ends open, one leg of the tube being longer than the other by a certain amount which is dependent upon the relative weights of the materials being separated. Then assume that the tube is revolving in an orbit with the point of the V outward from the center of rotation.

Assume that the shorter leg of the tube is full of the heavy element of thefeed mixture which is being separated and that the longer leg is filled with a combination column, which starting from the point of the V consists of a section of heavy material,

. a section of mixed material and a section of material section, this material will separate and the light material will climb the upper longer leg thus forcing separated light material therefrom, and the heavy material will be forced toward the point of the V and will add to the section of heavy material above the point thus overbalancing the heavy material in the short leg, and will cause a discharge therefrom. Continuous feeding of mixed material will therefore produce a continuous discharge of light and heavy materials from the tube. V

In particular the'present invention relates to the construction of a separator adapted to use this principle of balanced columns. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

Serial No. 34,004.

The annexed drawings and the following description set forth in detail certain mechanism embodying theflinvention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used:

In said annexed drawings Fig. 1 is a vertical sectional view through my improved basket; 2 is a sectional view on the line 22 of Fig. 1. Fig. 3 is a view similar to Fig. 1 but showing diagrammatically the relative positions of the heavy, mixed and light materials. Fig. 4 is a diagrammatic sectional view of a modified form.

The present basket consists of two truncated cone- shaped members 1 and 2, the

small end of truncated cone member 1 being of smaller diameter than that of member 2, these members each having a flange 3 be tween which is mounted a separator plate 4 the flanges 3 and plate 4 being secured together by rivets 5 or other suitable fastening means. This separator plate 4 is provided adjacent the outer edge with a series of apertures 6.

Mounted radially of the separator plate are series of vanes 7 and 8 which are generally triangular in shape and which extend along the members 1 and 2 and radially in- ,ward thus dividing the basket into a series of pockets and forcing the material being separated to rotate with the basket. These vanes are mounted both above and below the plate 4, the vanes 8 of the lower member being smaller than the vanes 7. The rear corner of the vanes of both series is cut off, forming an opening 9 around the basket for equalization of the load.

A horizontal batlle plate or ring 10 is mounted above the separator plate 4, said baffle plate or ring extending across between the vanes for a portion of the radial distance and thus forming chutes or pipes from the central basket portion to an intermediate portion. The basket is adapted to be rotated and a central drive shaft 12 is provided which extends through a suitable aperture 13 in the separator plate and into a housing 14 mounted on the underside thereof. i The shaft is secured in place by means ofa washer and lock nuts 15 or in any other suitable manner. Thus the basket is rotatably carried with said shaft which may be hung in any suitable type of bearing not shown. Extending into the upper open end of the basket are a seriesoi teed ,pipes 16 the outlet ends 17 of which areadjacent the separator plate 4 and below the level ot-the horizontal baffle plate or ring 10 as best shown in Fig. 1.

The operation of the device is diagrammatically illustrated in Fig. 3. In starting, the basket will be revolved andbrought up to normal speed and then a charge of high density material is fed in, untilan o-verflow occurs at the bottom and then the regular run of mixed solution is ted into the basket. As mixed material is fed through the teed pipes 16 it is forced outwardly through the space between the baffle plate 10 and the spearator plate 4mm the separating area 0. The heavier charge material will flow through the holes 6 and finally fills the area a the size; oi": "the lo'wer vanes 8 and the area b above the plate 4-. Next to the high density or heavy material will be a layer of the mixedm-cv teriajl to be separated which will occupy the area 0 and then inwardly will. be a strata of the light separated material over the area d. It is'of course to be understood that the stratification will not be as definite as indicated as there will be no line ofabsolute demarcation between layers but in a general way the condition illustrated will be maintained.

Once the basket is fully charged andthe separated condition obtained, the addition ofmore mixedmaterial will cause a discharge, the light material being discharged through the upper central 4 opening and being caught in any suitable container while the heavy material increasing will cause a portion thereof to tail tronrthe bottom opening until a balanced condition 'is again obtained. Continuous feeding of the mixed material will therefore cause a continuous flow: of the separated materials from the two basket members. 7

It is to be understood "that the basket need not have a V shaped wall as it is obvious that'the wall maybe curved or formed as shown in Fig. hin which form the basket 20 is cylindrical with horizontal flanges 21 and 22 at the ends the flange 21having an opening 23 of smaller diameter th an the opening 24 in flange 22. The vanes 25 and separator plate 26 are the same as in thegpreceding form and a bafiie plate'or ring27 is also'used aspreviously described. Itis only necessary to provide the pockets above and below the separator plate, one set of'the pockets being larger than the other and having its discharge edge of less diameter.

It is also to be understood that suitable dis.- charge openingsmay be formed in" thewall,

the radial distance from the axis of rotation ,partment beingot other, a separator plate mounted between vanes on the walls of said'comp to the openings determining the action of the device.

Other modes of applying the principle of. my invention may be employed by me instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any taching two open-ended coneshaped memberstogether along their largest diameter, a separator plate-mounted at thcjunctionoi such members and having apertures allowing communication between said members,

a seriesof vertical vanes in said members tending; into the body oft-he material being separated, and-means for feeding material "to be separatedto said separator plate.

2. A centrifugal separator "basket conip'rising a shell of the-shape of two truncated cones joined attheir'largest diameters, one Offldltl cones having a smaller outlet opening than the ot er, a separator plate mounted between said two cones and provided with openings adjacent the cones to permit flow oi material to both sides of said plate,

radial vanes on the Walls of said cones to force the material. to rotate with said basket,

and a battle-plate parallel with said separator plate and adapted to force the material fed into said has ct into an unseparated strata ofthe material undergoing separation. I

3. A centrifugal separator bashetiior use .with a separator using the principle oi hal- 'anced columns, comprising two open ended hollow compartments, joinedat th rlargest diameters,the cischarge end of one -oinsaid two comparti nents and provided with openings adjacent the \VfillhO PGTllll'il flow or material tobothsides of said plate, radial 'tmentsto force material to rotate with sard basket, and a baille plate'paral lel 'with'said separator plate and adapted to toreethe material ted into "saidbas'ket into an unseparated strata of the material undergoing separ-ation.

Signed by me this25th day of May, 1925.

WALTER J. BLANCIdARD.

ler diameteh than the i

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