US2085929A - Centrifuge - Google Patents

Description

July 6, 1937. c. w. STRATFORD ET AL 2,085,929

CENTRIFUGE Original Filed 001;.

26, 1952 6 Sheets-Sheet l INVENTORS Zea m MW July 6, 1937.

c. w. sTRATFoRD ET AL -CENTRIFUGE Original Filed on. 26, 1952 e Sheets-Sheet 2 INVENTORS EDD July 6, 1937. c; w. STRATFORD ET AL 2,085,929

GENTRIFUGE Origixial Filed Oct. 26, 1932 6 Sheets-Sheet 4 51 LQQ 43 42 41 5O July c. w. STRATFORD ET AL 2,085,929

CENTRI FUGE original Filed Oct 26, 1952 e Shets-Sheet 5 ugvENTpRs HQr edZ: .Dnczasrusm July 6, 193 7.

C. W.-$TRATFORD ET AL CENTRIFUGE ori ina Filed on. 26, 1932 6 Sheets-Sheet 6 INVENTQ R5 finiafirc or.

ATTORN EY which the motor is suspended below and in line Patented July 6, 1937 CENTRIFUGE Charles W. I Stratford, Kansas City, Mo., and Alfred E. Drissner, Cleveland, Ohio, assignors to National Acme Company, Cleveland, Ohio,

a corporation of Ohio Original application October 26, 1932, Serial No. 639,704. Divided and this application May 2,,

1934, Serial No. 723,

, April 14,1934 v 452. In. Great Britain,

15 Claims. (Cl. 23a-1 I This invention relates to centrifugal separators primarily intended to separate sulphuric'acid from distillate in the process of refining crude oil, the principal object 'of the invention being to provide a compact direct motor driven separator so constructed that it is easily accessible for cleaning, the bowl and pans of which are readily disassembled without disturbing the motor drive.

A further object of the invention is the provision of an improved centrifugal separator in with the bowl, insuring accurate alignment ,between the two and eliminating gears and belts thus permitting the operation of the bowl at high speed, the motor being so mounted that vibration of the bowl when starting is not transmitted to the motor and motor bearings.

A further object of the invention is the pro-- vision of an improved bowl fora centrifugal sep-j f," 1- arator in which the liquid passing into the bowl is equally distributed to all parts of the bowl and at the same time is brought upto the speedof the bowl as it is discharged into the'bowl.

A further object of the invention isxthe provis on of improved discharge pans or receptacles by means of which the direction of flow of the liquid is changed, therebyavoiding the atomization of the liquid and preventing the formation of spray and vapor that would penetrate to" the i motor bearings and ruin them.

appear through the description and which result in the provision of a comparatively simple, inexpensive and highly eflicient high speed separator capable of obtaining the desired results such as preventing the entranceof air to form an explo "sive mixture; the'eliminatiomof pressure which would blow the oil out of the bearings; the reduc- -tion in the air turbulence and'conSequ nt heat-" ing of the parts whichwouldcause bearin -7 .trouble; theprevention of gasoline. fumes get- .""1 of "floti' mm the motor the provls on ng 6 suitablyi supported,by'sprmgs I; the shaft being Fig. '3 is a cross section taken on line 3-3 of Fig. 2a v v 4 'is a cross section taken on line of v Fig. 2. I

Fig. 5 is an enlarged vertical sectional view of the upper half includingv the bowl portion of the separator.

Fig. 6 is a vertical sectional view of the lower I halfor motor portion of the separator.

Fig. '7 fisatop'view of the separator part illus 10 trating the "formation of the discharge'pans."

Fig.8 is an enlarged detail sectional view illus tween the motor and the bowl.

Fig.-9fis asectionalperspective view ofthe fastenin'g'means between thebowl and its cover.

2,5, and 1 i cross-sectional view taken on'line "g, 1( lfi s' a cross-sectional view taken; on line an -1n "of a responding parts in the several views. I

Before explaining in detail thepresent improve: 1 'ment sand mode of operation "thereof; we desire. -to have'it understoodthat the invention is not limited to, the details of construction and. are,

rangement' of parts whichare illustrated in the accompanying; drawingssince the i nventionis capable of other embodiments, and that the 'scription "and not of ;-1imltation.

'. a pair oi -"housings, thehousing 2 carrying the .drive shaft between the motor and thelbowl and,"

generally, an improved construction by means of November 17th, 1936.

of thisfimproved centrifugal separator. Fig. 2 is avertical section thereof.

motor; and the! housing carrying the bowl.

These. housings 2; and i3f'a r cylindrical toreduce housing-2 andni niotoror main drivingshaft 5- s'supported a't sl'ower. end by a ball bearing -rotatably.scuredat' its lowerend of thebottom of thehou'sing- 2;;

slippage canoccur between the' bow, afiddrive) v, spindle withoutdamage and the/bowl I -:-driven by 'ffic'tional'contact with; this bronze disk -,;wm1e-u1,spnngs limit the amountot thrust. o

. thus zfili'ej rr otorf t gisxsuitably. u'spended within the tratingthe lowerend of the shaft connection bea y 42o ersi-of reference indicate cor- V .phraseolo y we employ-is' for-thepurpose of ,de- Numerous other objects and ,advantages will I 45 'rhe'bo 1 (iii 'ng-spindle8is driven by and pro- 1 jects into .a-isleeves of the motor shaft 5 and is" Pllhdiihi Sh 5 as he upperend H "of ssn h le81 provided w t a a r ofpins l a l tin into a fl dbronze disk 1 2; elii ;5 s rings l3 ag' instthebottom'of theibowl so -that: .In the drawings,accompanyingaand forming a, part of thisspeciflcatioml i'g; 1 is a si de elevation the springs l3 in position between the bowl anddisk flanges 6| and GI.

The driving spindle 8 comprises a two-part member, one part having at its lower end a flatsided tongue I4 projecting into a bifurcated member M, which latter is pinned as hereinbefore stated at [0 to the motor shaft 5. Between the lower end of this tongue and the adjacent wall of the member I4 is a flat spring IS.

The upper end of the driving spindle 8 is supported by a ball bearing l6- which, like the bearing 6, is supported by springs l1 and below the bearing I6, the driving spindle is also supported by a ball bearing l8. Thus, the motor shaft and spindle are supported by three bearings, the top bearing I6 and the bottom bearing 6 being mounted on springs to limit the amount of weight applied to each of the ball bearings and by reason of the interlocking connection at M and [4, vibration of the motor to the bowl or vice verse. is not imparted and a part of the downward pres sure of the bowl is compensated for by the flat spring IS.

The spring suspended ball bearing I6 is carried by a housing l9 formed as a part of the cover 20 bolted to the top of the motor housing 2 and the framework of the motor housing is such that it will properly position the motor as, by means of framework flanges 2land 22 and seal the same, the upper flange 22 forming a cover as at 23 for the motor chamber and provided with a hub 24 for the passage of the motor shaft therethrough while at the same time this cover 23 is provided with a suitable cylindrical frame 25 for supporting the ball bearing I8.

The driving connections between the motor shaft 5 and the bowl are such that there is ample allowance for relative movement between the motor shaft and bowl so that the latter will be rotated on its own axis and vibration of the bowl due to starting is not transmitted to the motor and its bearings to the damage of the latter. By placing the motor directly under the bowl, not only is a direct drive to the bowl obtained without the use of gears or belts which are so highly objectionable at high speeds, but a more compact, easily assembled and, therefore, less expensive separator is provided. Especially is this the case since the bowl can be readily disassembled without disturbing the motor drive and by means of the three sets of ball bearings the weight of the bowl and the liquid contained therein and the up and down float are taken on all three of these sets of ball bearings so that this distribution of weight addsmaterially to the life of the bearings by reducing pressure on any one bearing.

By the mounting of the bearing l6 upon springs, it follows that when it moves down the pressure is transmitted to the driving spindle 8 resting on the flat spring l5 which thus assists in taking up this downward pressure, a part of the pressure coming on the bearing 6 at the bottom of the motor shaft which, as hereinbefore stated, is likewise mounted on springs.

The separating bowl 30 is'mounted within the housing 3, which housing has inwardly extending guide flanges 3| and 32 at the top and bottom of the bowl for guiding the bowl and at thesame time are also effective as strengthening flanges to prevent fracture in the event of an explosion and are sufficiently spaced from the bowl so as not to contact therewith during the rotation of the bowl.

Theseflanges are provided with troughs 33 for catching any excess liquid forced out of the bowl and this liquid is carried off by drain pipes 34.

The bowl is provided with a cover 35, for which purpose the top of the bowl is provided with threads carrying a threaded ring 36 (see Fig. 9), and this ring is kept from rotating by means of pins 36. Between the top of this bowl ring and the cover is located a gasket 31 to prevent leakage and the ring 36 has a loose threaded fit with the bowl whereby any inequalities in the thickness of the gasket are compensated for as this threaded ring can have a slight vertical movement relative to the bowl, thus insuring a tight fit between the gasket and cover at all times.

The cover is connected to the ring by hollowhead-cap screws 38 to avoid windage for if these bolts projected above the cover they would act as impellers during the rotation of the bowl and create wind pressures in the upper part of the casing 3, causing heat due to air turbulence, as a result of which the bearings would break down tending to blow the oil from the bearings and also disturb the oil seal in the bearings. In other words, they would form a separate atmosphere in the upper part of the casing from that in the lower part of the casing.

Extending downwardly into the bowl is an inlet tube 39 for feeding the emulsion to the lower end of the bowl and this tube is surrounded by a tube 40, which tube 40 at its lower end is provided with ports 4| for the passage of liquid from r the tube into the bottom of the bowl. This inlet tube discharging below the center of the bowl instead of above the center or near the top thereof has several important advantages. It not only enables the liquid to be discharged just above the propeller and not far from the pocket openings, avoiding the tendency of the liquid simply to flow down the sides of the tube, but prevents it from going to the sides of the tube, whirling around and setting up a disturbance and creating back pressure. Experiments have shown that when the tube discharges above the center or near the top of the bowl, the liquid goes to the side of the tube, whirls around and creates a disturbance which sets up considerable back pressure, materially interfering with the effective action of the centrifuge. By eliminating this whirling action throughout the length of the tube and consequent disturbance and back pressure, the liquid is permitted to enter the bowl much more quickly, thus increasing the rapidity of action of the bowl, the output being increased approximately 300%. In the lower end of the tube 40 is located a propeller 42 which assists in forcing the liquid from the tube through the ports 4| into the bottom of the bowl, the lower end of this propeller being suitably connected with the bottom of the bowl for rotation thereby.

The bottom of the bowl between the ports 4| is provided with a series of pockets (see Fig. 4) formed. by partitions 43 projecting upwardly from the bottom of the bowl and having their outer edges in contact with the sides of the bowl while their inner edges engage the tube 40. The object of these partitions is to insure equal distribution of the liquid to all parts of the bowl and atthe same time bring the speed of the liquid up to the bowl speed before it is discharged into the bowl and these partitions project upwardly to about the height of the ports. Without these partitions, the liquid would pass through the ports into the bowl bottom and would not assume a rotative motion until the friction between the liquid and the bowl-brought the liquid up to the speed of the bowl. In other words, the bowl would slide under the liquid whereas, by the use of these pockets, the partitions act as propellers and propel the liquid around and bring it up to the speed of the bowl very quickly.

Carried by the cover 35 within an annular recess thereof and projecting upwardly therefrom is a shell or housing 44 and between this shell or housing and the tube is a tube 45, and the cylindrical chamber formed by the latter communicates with the top of the bowl around the tube 40 by means of an annular passage 46 while the upper part of this tube has ports or pas--v sages 41 communicating with the top discharge pan 48.

The chamber formed by the shell 44 around the tube 45 likewise communicates with the top of the bowl through ports or passages 49 and at the top thereof ,through ports or passages 50 with the lower discharge pan 5|.

Located around the tube 45 and secured to the cover is a separator disk 52 projecting adjacent to the bowl wall 30 and separated therefrom by an annular space or passage 53 for the passage of liquid from the bowl through the ports 49 to the chamber formed by the shell 44 and out through the ports 50 to the lower discharge pan 5|.

Centrifugal force applied to the liquid within the bowl causes the heavier liquid to form in a layer on the inner wall of the bowl. This layer begins with a very thin layer at the bottom of the bowl and becomes thicker toward the top due to the fact that the flow of the liquid is from the bottom toward the top of the bowl and the liquid consequently becomes more and more separated into its two constituent parts as it reaches the top of the bowl and the separator disk 52 just described causes the heavy liquid to be taken from the bottom of the bowl and prevents the discharge of the liquid from the intermediate zone in the bowl which is still in an emulsified state with the result that the heavier liquid passes out through the passage 53 and ports 49 and'the chamber formed between the shell 44 and the tube 45 and out through the ports 50 into the lower discharge pan 5|.

The upper part of the shell 44, interiorly there of, is provided with a detachable dam ring 54 having an opening therethrough (see Fig. 11), which may be replaceable by rings having larger. or smaller openings, and by means of which the level at which the separation occurs may be varied. In other words, by substituting rings having openings of different diameters, a change in the level at which the separation of-the liquid is effected and a change in the proportion of the heavy liquid which is drawn off results.

In practice, the light liquid or gasoline flows upwardly through the separator disk through the passage 46 and out through the ports 41 into the upper pan 48 while the heavier liquid, as hereinbefore explained, passes from the top of the bowl through the passage 53 and ports 49 and between the shell 44 and the tube 45 and out through the ports 50 into the discharge pan 5|.

Secured to the top of the bowl housing 3 is an annular housing 2' having the lower discharge 'pan 5| formed therein and secured to the top of this housing 2 is a pan formed cover 55 so that the housing 2 may be considered to be made up 'avoid the entrance of air in sections bolted together and readily assembled and disassembled.

Both of the discharge pans 48 and 5| have a volute formation (see Figs. '7 and 11) by reason of which the direction of flow of the discharging liquid is changed without atomizing it as would be the case if its discharge was interrupted close to theshell 'wall at right angles to the direction of that discharge and the purpose of this tangential discharge is to prevent the atomization of the discharge and the formation of vapor.

To illustrate, if a water hose is held at a slight 1 angle close to a wall, the discharge of the water is prevented from turning into a spray but if held at right angles to the wall and directly against the wall, the water striking against thewall interrupts the stream and tends to turn it into a spray or numerous atoms so that, by tangentially discharging'the liquid, the prevention of this spray and atomization is accomplished which is highly desirable since, when a spray is formed, the vapor therefrom penetrates into the bearirms and as this vapor is corrosive, the bearings quickly become ruined whereas, this is avoided by the tangential discharge of the liquid in the manner described.

Should the liquid flow through the inlet tube 39 faster than it can be handled, it would so pile up that it would interfere with the proper working of the separator and in this event, it passes by the detector window 56, thus indicating to the operator that the rate of flow should be curtailed.

In the present improvement, by having the motor frame or housing separate from the bowl housing, the motor is explosion proof and when the apparatus is used in connection with gasoline or distillate, the fumes therefrom cannot get into the motor. The oil inlet and drain of the motor housing is separate from that of the bowl housing, the bowl housing being suitably sealed to to form an explosive mixture. I

The bowl housing is provided with a suitable door so spring held that it will be readily released and prevent the ruptureof the parts in the event of an explosion.

In the operation of the machine, the gasoline or distillate to be separated passes through the inlet tube 39, strikes the propeller 42, this fluid thus falling in a column, not rotating, and the propeller rotating with the bowl pulls the liquid quickly into the bowl, whereupon the partitions 43 impart rotation to the liquid and insure an even distribution of the liquid in the bowl and also prevent the liquid escaping into the bowl before itis brought up to the speed of the bowl.

During the operation of the machine, the bowl passes through several zones of vibration in bringing it up to its proper speed of rotation, which is about 10,000 R. P. M., the speed at the outside of the bowl being about four miles per minute and there must be some allowance for this vlbration. Consequently, the play between the driving spindle of the bowl and the motor shaft, and the manner of supporting the several parts are highly important to permit this vibration without breakage of the parts.

From the foregoing, it will be observed that the bowl is practically a floating bowl due to the friction drive between the spindle 8 and the bowl and that the connection between the motor shaft and the driving spindle 8 is such that a free floating action is obtained between these parts.

In practice, the air seal 10 is provided to take care of the overflow or leakage of the bowl and prevent the accumulation of liquid.

In addition to the spring supported ball bearings surrounding the motor shaft and bowl driving spindle, the bowl is cushioned at the bottom by the springs hereinbefore referred to and between its ends a suitable cushioning spring 52 is located around the shell 44 and the ball bearing for the driving spindle 8 is held sidewise by means' of flat springs 63 located in the ring around the ball bearing, thereby allowing the ball bearing to float sidewise.

It is to be understood that, by describing in detail herein any particular form structure or arrangement, it is not intended to limit the invention beyond the terms of the several claims or the requirements of the prior art.

Having thus explained the nature of our said invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which it may be made or all of the modes of its use, we claim:

1. In a centrifugal separator, the combination of a motor and its shaft, a rotating bowl in axial alignment with the motor shaft, a floating spindle between the motor shaft and bowl for rotating it, said bowl having a tube, an inlet tube opening therein, said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions extending approximately only to the top of the radial ports and adjacent to the wall of the bowl for receiving the discharge of fluid from the ports and rotating thesame so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl.

2. In a centrifugal separator, the combination of a motor and its shaft, a rotating bowl in axial alignment with the motor shaft, a floating spindle between the motor shaft and bowl for rotating it, said bowl having a tube, an inlet tube opening therein, said first tube having radial ports at its lower end [and said bowl having therebetween at the bottom thereof partitions extending approximately only to the top of the radial ports and adjacent to the wall of the bowl for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, and a propeller in said first tube below the discharge end of the inlet tube.

3. In a centrifugal separatorythe combination of a motor and its shaft, a rotating bowl in axial alignment with the motor shaft,a floating spindle between the motor shaft and bowl for rotating it, said bowl having a tube, an inlet tube opening therein, said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions extending ap-.

proximately only to the top of the radial ports and adjacent to the wall of the bowl for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, and a separating disk carried at the top of the bowl and extending adjacent to the wall of the bowl.

4. In a centrifugal separator, the combination of a motor, a rotating bowl supported in axial alignment therewith, means for rotating the bowl from the motor, an inlet tube in the top of the bowl and extending below the center thereof, a tube surrounding said inlet tube, a

tube surrounding said last tube for conveying material from the bowl into a discharge pan, a shell surrounding said last tube and communicating with the bowl and a lower discharge pan, a separator disk extending adjacent to the walls of the bowl for controlling the passage of the fluid through the shell, and detachable means having a series of openings therein at the upper end of the shell for regulating the passage of the fluid therethrough.

5. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening therein, said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions extending substantially only to the top of the radial ports and adjacent to the wall of the bowl for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl.

6. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening therein, said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions extending substantially only to the top of the radial ports and adjacent to the wall of the bowl for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, and a propeller in said first tube below the discharge end of the inlet tube.

' 7. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening therein,

said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions extending substantially only to the top of the radial ports and adjacent to the wall of the bowl for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, and a separating disk carried at the top of the bowl and extending adjacent to the wall of the bowl.

8. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, an inlet tube in the top of the bowl and extending below the center thereof, a tube surrounding said inlet tube, a tube surrounding said last tube for conveying material from the bowl into a discharge pan, a shell surrounding said last tube and communicating with the bowl and a lower discharge pan, a separator disk extending adjacent to the walls of the bowl for controlling the passage of the fluid through the shell, and detachable means having a seriesof openings therein at the upper end of the shell for regulating the passage of the fluid therethrough.

9. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening therein and extending below the center of the bowl, said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl'when the fluid passes into the bowl, and a plurality of discharge receptacles located above the bowl and construct- 7 5 ed to centrifugally discharge the fluid from the bowl thereby to prevent spraying and atomization of the fluid, each of the receptacles having a volute formation.

10. In a centrifugal separator, the combination of a rotatable bowl and. means for rotating it, said bowl having a tube, an inlet tube opening therein and extending below the center of-the bowl, said first tube having radial ports at its lower end and said bowlhaving therebetween at the bottom thereof partitions for receivingthe discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, said bowl having a cover, means for securing the cover to the bowl and comprising a threaded ring supported on the bowl for vertical movement, a gasket between the cover and the bowl, and bolts securing the cover and the ring and having heads thereof sunk into the top of the cover thereby to prevent windage,

11. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening therein and extending below the center of the bowl, said first tube having radial ports at its lower end and said bowl having therebetween at the bottom thereof partitions for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, a propeller in said first tube below the discharge end of the inlet tube, and a plurality of discharge receptacles located above the bowl and constructed to centrifugally discharge the fluid from the bowl thereby to prevent spraying and atomization of the fluid, each of the receptacles having a volute formation.

12. In a centrifugal separator, the combination of arotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening therein and extending below the center of the bowl, said first tube having radialports at its lower end and said bowl having therebetween at the bottom thereof partitions for receiving the discharge of fluid from the ports and rotating the same so that the speed thereof will be the same as the speed of the bowl when the fluid passes into the bowl, a propeller in said first tube below the discharge end of the inlet tube, said bowl. having a cover, means for securing the cover to the bowl and comprising a threaded ring supported on the bowl for vertical movement, a gasket between the cover and the bowl, and. bolts securing the cover and the ring and having heads thereof sunk into the top of the cover thereby to prevent windage.

13. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, said bowl having a tube, an inlet tube opening a volute formation,

therein, said first its lower end and said bowl having therebetween at the bottom thereof partitions extending substantially only to the top of the radial ports and adjacent to the wall of the bowl for re- \ceiving the discharge of fluid from the ports of the bowl and extending adjacent to the walls of the bowl.

14. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, an inlet tube in the top of the bowl and extending below the center thereof, a tube surrounding said inlet tube, a tube surrounding said last tube for conveying material from the bowl into a discharge pan. a shell surrounding said last tube and communicating with the bowl and a lower discharge pan, a separator disk extending adjacent to the walls of the bowl for controlling the passage of the fluid through the shell, detachable means having a series ofopenings therein at theiupper end of the shell for regulating the passage of the fluid therethrough, and a plurality of discharge receptacles located above the bowl and constructed to centrifugally discharge-the fluid from the bowl thereby to prevent spraying and atomization of the fluid, each of the receptacles having a volute formation.

15. In a centrifugal separator, the combination of a rotatable bowl and means for rotating it, a tube surrounding said inlet tube, a tube surrounding said last tube for conveying material from the bowl into a discharge pan, a shell surrounding said last tubeand communicating with the bowl and a lower discharge pan, a separator disk extending adjacent to the walls of the bowl forcontrolling the passage of the fluid through the shell, upper end of the shell for regulating the passage of the fluid therethrough, a plurality of discharge receptacles located above the bowl and construct-1v ed to centrifugally discharge the fluid from the bowl thereby to prevent spraying and atomization of the fluid, each of the receptacles having said bowl having a cover, means for securing the icover to the bowl and comprising a threaded'ringv supported on the bowl for vertical movement, a the cover and the bowl, cover and the ring and having heads thereof sunk into the top of the cover thereby to prevent windage.

- CHARLES W'. STRATFORD.

AIFRED E. DRISSNER.

gasket between and bolts securing the tube havlngradial ports at detachable means at the

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