US2695748A - Centrifuge nozzle construction - Google Patents

Centrifuge nozzle construction Download PDF

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US2695748A
US2695748A US267648A US26764852A US2695748A US 2695748 A US2695748 A US 2695748A US 267648 A US267648 A US 267648A US 26764852 A US26764852 A US 26764852A US 2695748 A US2695748 A US 2695748A
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nozzle
rotor
wall
discharge
lug
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US267648A
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Loren D Millard
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Merco Centrifugal Co
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Merco Centrifugal Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/12—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with continuous discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements
    • B05B3/02—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements
    • B05B3/10—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1007—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
    • B05B3/1021—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery
    • B05B3/1028—Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery the passages comprising an insert

Definitions

  • This invention relates generally to the construction of centrifuge rotors, and more particularly to nozzles for the discharge of centrifugally separated fractions.
  • Centrifuge rotors are usually fitted with one or more sets of nozzlesfor the discharge of centrifugally separated fractions.
  • the methods of attachment which have been used require access to the interior of the rotor inorder torernove or apply certain component parts of the nozzle assembly (see for example Peltzer 2,060,239). This is alabor and time consuming operation which requires complete shut-down of the machine, andwhich may seriously interfere with processing requirements of the system in' which the machine is used.
  • Another object of the invention' is to provide a rotor and nozzle construction of the above character' which greatly facilitates the labor and time required for the removal or replacementof anozzle.
  • Another object of the invention is to provide novel interlockingmeans for retaining discharge nozzles of a centrifuge rotor in operative position.
  • Another object of the invention is to provide a novel nozzle constructionwhichfacilitates maintenance of a seal between the nozzle assembly and the centrifuge rotor.
  • Another. object of theinvention is to provide a nozzle constructionwhichfacilitates making adjustments to provide a desired direction of discharge.
  • Afurther object of the invention is to provide a relatively simple nozzle construction which can be readily manufactured, and-which facilitates the use of relatively hard wear-resisting material.
  • Figure 1 is a detail in section illustrating a wall portion'of a centrifuge rotor equippedwith my nozzle construction.
  • Figure 2 is adetail looking toward the right hand side of Figure. 1.
  • FIG. 3 is a detail in section like Figure 1, but showing another embodiment of the invention.
  • Figure 4 is a detail looking toward the. right hand side of Figure 3.
  • Figure 5 is a detail in section like Figure 1 but illustrating another embodimentof the invention.
  • Figure 6 is a detail taken looking towards the right handsideof Figure 5.
  • Figure. 7 is a detail in section like Figure 1 but illustrating another embodiment of the invention.
  • Figure 8 is a detail looking toward the right hand side of Figure 7..
  • Figure 9 is a detail in section like Figurel but showing another embodiment of the invention in which the orifice discharges in a non-radial direction aligned with the. axistof the nozzle assembly.
  • Figure. 10 is a cross-sectional detail taken along the line 16*) of Figure 9.
  • annular wall 10 which forms a part of a centrifuge'rotor, and which for example may be a portion of the peripheral wall surround ing the separating chamber.
  • the curved surface. 12 is the confining surface of the separating chamber, and the surface 13 is an exterior periphery.
  • My improved nozzle construction is designated generally at 14, and in practice a plurality of such nozzle assemblies are mounted at regularly spaced intervals about the periphery of the rotor.
  • the nozzle assembly includes the body 16, which is machined to provide the cylindrical surface 17.
  • the wall 10 is provided with a cylindrical bore 18 which is dimensioned to snugly accommodate the body, andthe axisof this bore is radial with respect to the axis of the rotor. Leakage between the body 16 and the wall It is prevented by suitable means such as the resilient. seal ring 19;
  • the particular seal illustrated is of the 0 ring type, and is loosely accommodated within an annular groove 20 formed in the periphery of the body 16.
  • the resilient O ring is dimensioned whereby it is compressed a slight amount-in a radial direction, to maintain sealing contact between the body and the surface of the bore 18. Sealing means of this character is capable of withstanding relatively high fluid pressures, while at the same time permitting ready removal.
  • the outer end portion of the body 16 is provided with a bore 21, which is fitted with insert 22 which can be of metal or some erosion or corrosion resistantmaterial, such as hard metal, metal alloy like tungstencarbide, ceramic or jewel. It can be held in place by suitable means such as hard solder, brazing or cementing.
  • insert 22 which can be of metal or some erosion or corrosion resistantmaterial, such as hard metal, metal alloy like tungstencarbide, ceramic or jewel. It can be held in place by suitable means such as hard solder, brazing or cementing.
  • the body is also bored to provide the fluid passage 24, whereby a centrifugally' separated fluid fraction may pass through bore 24and discharge through orifice 23.
  • the inner end face 26 of the insert 22 is inclined to both the axis of the insert; and the axisof the bore 24, as illustrated. According. to my observations, this serves to minimize wear; of the nozzle, which I attribute to the fact that it tends to prevent or reduce swirlof material within the body 16, andparticularly as material flows into the orifice 23.
  • the outer end face of the body 16 is flush with the outer peripheral surface 13.
  • the wall 10 is provided with a cavity 27 which is dimensionedin order to enable free discharge of material from the orifice 23. It will be noted that the discharge is directed backwardly with respect to the direction of rotation of the rotor.
  • Means is provided for detachably securingthe body. 16 within the wall' 10.
  • the means consists of a lug 28 which is formed integral with the body and which is preferably on that side of 'the body diametrically opposite from the insert 22.
  • the wall 10 is machinedto provide the arcuate groove or recess'29, which is dimensioned to accommodate the lug 28.
  • the groove 29 is not completely circular, and its ends open into the cavity 27.
  • the nozzle securing means described above. firmly locks the nozzle within the rotor wall 10 for normal operation of the machine.
  • the resilient O ring 19 forms a fluid tight seal between the body 16 and the rotor wall, and is capable of withstanding the relatively high fluid pressures to which the nozzle is subjected.
  • the nozzle body 16 is turned 180 from the position shown in Figures 1 and 2, which frees the lug 28 with respect tothe groove 29, thus permitting the complete nozzle to be withdrawn.
  • the lug 28 is aligned with the cavity 27, after which the body 16 is inserted within the bore 18 .to a position non-radial direction.
  • the angle of discharge can be adjusted as desired by turning the nozzle body clockwise or counterclockwise, from the position illustrated in Figure 2. This serves to cause the orifice 23 to discharge material in a direction either above or below a plane normal to the axis of the rotor and contiguous with the axis of the nozzle.
  • the resilient ring provides sufiicient friction to hold the nozzle in an adjusted position.
  • Figures 3 and 4 illustrate another embodiment of the invention, which is similar in some respect to Figures 1 and 2, but which utilizes an additional part for locking the nozzle to the rotor wall.
  • the rotor wall 32 is provided with a bore 33 for receiving the body 34.
  • the body 34 is provided with the resilient 0 ring 36, to establish a seal, and also it is provided with the insert 37.
  • the orifice 38 in the insert discharges through the cavity 39.
  • the body is provided with an integral lug 41, which is accommodated within the arcuate groove 42. Except for dimensions, the parts just described are similar to Figures 1 and 2.
  • the additional locking element used in Figures 3 and ,4 consists of a screw or threaded plug 43.
  • This screw is threaded into a bore 44 provided in the wall 32, and a part of this bore extends through the lug 41.
  • the screw 43 With the screw 43 in place, as illustrated in Figure 3 and 4, it serves as an interlock between the lug 41 and the rotor wall, and therefore prevents rotation of the body 34.
  • screw 43 is first removed, after which the body 34 can be rotated 180 and retracted.
  • the body and its associated parts are proportioned the same as in Figures 3 and 4.
  • the locking screw 43 is omitted whereby the lug 41 becomes the sole means for locking the nozzle within the recess 42.
  • the rotor wall 32 is provided with a threaded bore 46, which is engaged by the screw 47. The inner end of this screw engages the adjacent side face 48 of the lug 41, whereby the screw forms a stop which limits rotation of the body 34 in a counterclockwise direction as viewed in Figure 6.
  • the screw 47 is set in accordance with the angle of discharge desired.
  • a nozzle When a nozzle is removed it is turned in a clockwise direction as viewed in Figure 6, to bring its lug 41 into registry with the cavity 39.
  • the nozzle When the nozzle is again inserted in the rotor, it is turned counterclockwise until the end face 48 of the lug engages the screw 47.
  • the orifice 38 is displaced to one side of the axis of body 34 ( Figure 6) whereby the reaction of the jet tends to rotate the body to hold the lug 41 against the screw 47.
  • the rotor wall 51 is likewise provided with a radial bore 52 to accommodate the body 53.
  • the body is provided with an inner cylindrical bore 54, which is fitted with the insert 56 of wear resisting material.
  • a resilient O ring 57 forms a fluid tight seal between the body and the rotor wall, and
  • Another resilient 0 ring 58 forms a seal between the body and the insert 56.
  • the outer end portion of the insert is provided with a discharge orifice 59, which discharges through the opening 61 and the rotor cavity 62.
  • Suitable cushioning means 63 such as a layer of synthetic resilient rubber, is preferably inserted between the outer end of the insert and the adjacent portion of the body 53.
  • the body 53 is provided with the integral lug 64, which is accommodated within the arcuate groove 66.
  • the interlock is such that when the nozzle body is turned 180 from the position illustrated in Figures 7 and 8, the lug 64 is brought in registry with the cavity 62, and then the nozzle is free to be retracted.
  • a feature of the construction illustrated in Figures 7 and 8 is that the insert 56 is readily removable for replacement.
  • the bore which serves to receive the nozzle is disposed in a ring 74.
  • the body is also fitted with the insert 76 of wear
  • the rotor wall 71 is provided 0 resisting material which has a discharge orifice 77 aligned with the axis of the bore 72.
  • the orifice 77 discharges through the larger opening 78, and through the rotor wall cavity 72.
  • the outer end of the body 73 is provided with the integral lug 81, which is adapted to engage within the arcuate groove 82.
  • nozzle construction which enables removal and replacement of nozzles without access to the interior of the rotor, or in other words by operations which are completely exterior. Therefore nozzles can be replaced, or serviced to unplug the same, with a minimum expenditure of time and labor.
  • My nozzle construction can be used to advantage with a wide variety of centrifuges, including particularly centrifuges of the continuous operating type as shown for example in Patent 1,945,786.
  • the underfiow discharge nozzles of such centrifuges frequently handle components which may tend to cause relatively rapid Wear, or plugging or clogging of the discharge orifices.
  • With a machine equipped with my nozzle construction nozzles can be quickly replaced as desired, whereby the machine may operate continuously over long periods with a minimum of shut-down time for replacement or servicing.
  • a centrifuge rotor having an annular wall provided with an opening to receive a discharge nozzle, of a discharge nozzle
  • a discharge nozzle comprising a body annularly contoured to slidably fit within said opening when applied from the exterior of the rotor, said body providing a material discharge orifice, a lug carried by the body, means forming an interlocking recess in the wall for receiving said lug responsive to turning of the body after application of the nozzle within the wall, and means disposed on the inner side of the recess for forming a seal between the body and said wall.
  • a nozzle construction as in claim 1 in which the orifice discharges in a direction which is generally lateral to the axis of the body, and in which the body can be adjusted relative to the wall to adjust the angle of discharge.
  • a nozzle construction as in claim 4 in which an adjustable member is provided for adjusting the normal positiltlan of the nozzle body with respect to the direction of disc arge.
  • a nozzle construction as in claim 1 in which the orifice discharges in a direction in alignment with the axis of the body, and in which the axis of the body is inclined rearwardly with respect to the direction of rotation of the rotor.
  • said means including a lug carried by the outer end portion of the body and an interlocking recess in the wall for receiving said lug.
  • a centrifuge rotor having an annular wall providedwith a radially disposed smooth cylindrical bore to receive a discharge nozzle, of a discharge nozzle
  • a discharge nozzle comprising a body having a smooth surfaced cylindrical portion dimensioned to slidably fit within said opening when applied from the exterior of the rotor, means including a resilient seal ring carried by the cylindrical body portion and serving to establish a fluid tight seal between the body and the cylindrical surface of said bore, said cylindrical body portion having an axially disposed passage and the outer end portion of the body hav ing a discharge orifice communicating with the passage and directed to discharge material laterally with respect to the axis of said cylindrical portion, said wall having a cavity adjacentone side of said bore for accommodating material discharging from said orifice, the outer end of the body being'substantially flush with the outer periphery of the wall, '*a rid means forming a detachable interlock between'the outer end portion of the body and said wall, said means including a lug attached to

Description

30, 1954 D. MILLARD CENTRIFUGE NOZZLE CONSTRUCTION 3 Sheeis-Sheet 1 Filed Jan. 22, 1952 & m m m lore/7 0 MY/ srd BY JZZJ A v ATTORNEY) Nov. 30, 1954 L. D. MILLARD 2,695,748
CENTRIFUGE NOZZLE CONSTRUCTION Filed Jan. 22, 1952 3 Sheets-Sheet 2 IN V EN TOR. Zora 5. 47/7/{51/"0 United States Patent CENTRIFUGE NOZZLE CONSTRUCTION Loren D. Millard, San Mateo, Calif., assignor to Merco Centrifugal Co., San Francisco, Calif., a corporation of California Application January 22, 1952, Serial No. 267,648
9 Claims. (Cl. 233-47) This invention relates generally to the construction of centrifuge rotors, and more particularly to nozzles for the discharge of centrifugally separated fractions.
Centrifuge rotors are usually fitted with one or more sets of nozzlesfor the discharge of centrifugally separated fractions. In order to facilitate replacement of wornnozzles, or the clearing of plug discharge orifices, it has been common to detachably mount the nozzles in an annular wall of the rotor. The methods of attachment which have been used require access to the interior of the rotor inorder torernove or apply certain component parts of the nozzle assembly (see for example Peltzer 2,060,239). This is alabor and time consuming operation which requires complete shut-down of the machine, andwhich may seriously interfere with processing requirements of the system in' which the machine is used.
It is an object of the present invention to provide a centrifuge rotor and nozzle. construction which makes possiblevthe removal and replacement of nozzles from the exterior of: the "rotor and'without access to the rotor interior.
Another object of the invention'is to provide a rotor and nozzle construction of the above character' which greatly facilitates the labor and time required for the removal or replacementof anozzle.
Another object of the invention is to provide novel interlockingmeans for retaining discharge nozzles of a centrifuge rotor in operative position.
Another object of the invention is to provide a novel nozzle constructionwhichfacilitates maintenance of a seal between the nozzle assembly and the centrifuge rotor.
Another. object of theinvention is to provide a nozzle constructionwhichfacilitates making adjustments to provide a desired direction of discharge.
Afurther object of the invention is to provide a relatively simple nozzle construction which can be readily manufactured, and-which facilitates the use of relatively hard wear-resisting material.
Additional objects and. features of the invention will appearifrom the following description in-which the preferred-embodiments have been set forth in detail in conjunction with the accompanying drawing.
Referring to the drawing:
Figure 1 is a detail in section illustrating a wall portion'of a centrifuge rotor equippedwith my nozzle construction.
Figure 2 is adetail looking toward the right hand side of Figure. 1.
Figure 3 is a detail in section like Figure 1, but showing another embodiment of the invention.
Figure 4 is a detail looking toward the. right hand side ofFigure 3.
Figure 5 is a detail in section like Figure 1 but illustrating another embodimentof the invention.
Figure 6 is a detail taken looking towards the right handsideofFigure 5.
Figure. 7 is a detail in section like Figure 1 but illustrating another embodiment of the invention.
Figure 8 is a detail looking toward the right hand side of Figure 7..
Figure 9 is a detail in section like Figurel but showing another embodiment of the invention in which the orifice discharges in a non-radial direction aligned with the. axistof the nozzle assembly.
Figure. 10 is a cross-sectional detail taken along the line 16*) of Figure 9.
Referringfirst to the embodiment illustrated. in Figice ures 1 and 2, I have shown an annular wall 10 which forms a part of a centrifuge'rotor, and which for example may be a portion of the peripheral wall surround ing the separating chamber. The curved surface. 12 is the confining surface of the separating chamber, and the surface 13 is an exterior periphery.
My improved nozzle construction is designated generally at 14, and in practice a plurality of such nozzle assemblies are mounted at regularly spaced intervals about the periphery of the rotor.
In the construction of Figure 1, the nozzle assembly includes the body 16, which is machined to provide the cylindrical surface 17. The wall 10is provided with a cylindrical bore 18 which is dimensioned to snugly accommodate the body, andthe axisof this bore is radial with respect to the axis of the rotor. Leakage between the body 16 and the wall It is prevented by suitable means such as the resilient. seal ring 19; The particular seal illustrated is of the 0 ring type, and is loosely accommodated within an annular groove 20 formed in the periphery of the body 16. The resilient O ring is dimensioned whereby it is compressed a slight amount-in a radial direction, to maintain sealing contact between the body and the surface of the bore 18. Sealing means of this character is capable of withstanding relatively high fluid pressures, while at the same time permitting ready removal.
The outer end portion of the body 16 is provided with a bore 21, which is fitted with insert 22 which can be of metal or some erosion or corrosion resistantmaterial, such as hard metal, metal alloy like tungstencarbide, ceramic or jewel. It can be held in place by suitable means such as hard solder, brazing or cementing. The body is also bored to provide the fluid passage 24, whereby a centrifugally' separated fluid fraction may pass through bore 24and discharge through orifice 23. Preferably the inner end face 26 of the insert 22 is inclined to both the axis of the insert; and the axisof the bore 24, as illustrated. According. to my observations, this serves to minimize wear; of the nozzle, which I attribute to the fact that it tends to prevent or reduce swirlof material within the body 16, andparticularly as material flows into the orifice 23.
Preferably the outer end face of the body 16 is flush with the outer peripheral surface 13. To enable free discharge of material the wall 10 is provided with a cavity 27 which is dimensionedin order to enable free discharge of material from the orifice 23. It will be noted that the discharge is directed backwardly with respect to the direction of rotation of the rotor.
Means is provided for detachably securingthe body. 16 within the wall' 10. In this instance the means consists of a lug 28 which is formed integral with the body and which is preferably on that side of 'the body diametrically opposite from the insert 22. The wall 10 is machinedto provide the arcuate groove or recess'29, which is dimensioned to accommodate the lug 28. The groove 29 is not completely circular, and its ends open into the cavity 27. When the body, is positioned as shown. in Figure 2, the lug 28is disposed equidistant from the ends of the groove 29, and serves to securely lock the body within the wall 10. However, when the body is turned from the position shownin Figure 2, the lug'28 is brought into registration with the cavity 27, and the body is then free to be retractedfrom the rotor wall. Suitable means can be provided to facilitate turning the. body. Thus in Figures-1 and 2 the outer end of the body is provided with a slot 31 which can be engaged by a suitable turning tool.
The nozzle securing means described above. firmly locks the nozzle within the rotor wall 10 for normal operation of the machine. The resilient O ring 19 forms a fluid tight seal between the body 16 and the rotor wall, and is capable of withstanding the relatively high fluid pressures to which the nozzle is subjected. When-it is desired to remove a nozzle, the nozzle body 16 is turned 180 from the position shown in Figures 1 and 2, which frees the lug 28 with respect tothe groove 29, thus permitting the complete nozzle to be withdrawn. When it is desiredto insert a nozzle the lug 28 is aligned with the cavity 27, after which the body 16 is inserted within the bore 18 .to a position non-radial direction.
- the angle of discharge can be adjusted as desired by turning the nozzle body clockwise or counterclockwise, from the position illustrated in Figure 2. This serves to cause the orifice 23 to discharge material in a direction either above or below a plane normal to the axis of the rotor and contiguous with the axis of the nozzle. The resilient ring provides sufiicient friction to hold the nozzle in an adjusted position.
Figures 3 and 4 illustrate another embodiment of the invention, which is similar in some respect to Figures 1 and 2, but which utilizes an additional part for locking the nozzle to the rotor wall. Thus in this instance the rotor wall 32 is provided with a bore 33 for receiving the body 34. The body 34 is provided with the resilient 0 ring 36, to establish a seal, and also it is provided with the insert 37. The orifice 38 in the insert discharges through the cavity 39. The body is provided with an integral lug 41, which is accommodated within the arcuate groove 42. Except for dimensions, the parts just described are similar to Figures 1 and 2.
The additional locking element used in Figures 3 and ,4 consists of a screw or threaded plug 43. This screw is threaded into a bore 44 provided in the wall 32, and a part of this bore extends through the lug 41. With the screw 43 in place, as illustrated in Figure 3 and 4, it serves as an interlock between the lug 41 and the rotor wall, and therefore prevents rotation of the body 34. When it is desired to remove the nozzle, screw 43 is first removed, after which the body 34 can be rotated 180 and retracted.
In the embodiment of Figures and 6, the body and its associated parts are proportioned the same as in Figures 3 and 4. The locking screw 43 is omitted whereby the lug 41 becomes the sole means for locking the nozzle within the recess 42. The rotor wall 32 is provided with a threaded bore 46, which is engaged by the screw 47. The inner end of this screw engages the adjacent side face 48 of the lug 41, whereby the screw forms a stop which limits rotation of the body 34 in a counterclockwise direction as viewed in Figure 6.
With the embodiment of Figures 5 and 6, the screw 47 is set in accordance with the angle of discharge desired. When a nozzle is removed it is turned in a clockwise direction as viewed in Figure 6, to bring its lug 41 into registry with the cavity 39. When the nozzle is again inserted in the rotor, it is turned counterclockwise until the end face 48 of the lug engages the screw 47. This serves to establish the desired discharge angle. Preferably the orifice 38 is displaced to one side of the axis of body 34 (Figure 6) whereby the reaction of the jet tends to rotate the body to hold the lug 41 against the screw 47.
In the embodiment illustrated in Figures 7 and 8, the rotor wall 51 is likewise provided with a radial bore 52 to accommodate the body 53. The body is provided with an inner cylindrical bore 54, which is fitted with the insert 56 of wear resisting material. A resilient O ring 57 forms a fluid tight seal between the body and the rotor wall, and
another resilient 0 ring 58 forms a seal between the body and the insert 56. The outer end portion of the insert is provided with a discharge orifice 59, which discharges through the opening 61 and the rotor cavity 62. Suitable cushioning means 63, such as a layer of synthetic resilient rubber, is preferably inserted between the outer end of the insert and the adjacent portion of the body 53.
The body 53 is provided with the integral lug 64, which is accommodated within the arcuate groove 66. Here again the interlock is such that when the nozzle body is turned 180 from the position illustrated in Figures 7 and 8, the lug 64 is brought in registry with the cavity 62, and then the nozzle is free to be retracted.
A feature of the construction illustrated in Figures 7 and 8 is that the insert 56 is readily removable for replacement.
In the construction illustrated in Figures 9 and 10, the bore which serves to receive the nozzle is disposed in a ring 74. The body is also fitted with the insert 76 of wear Thus the rotor wall 71 is provided 0 resisting material which has a discharge orifice 77 aligned with the axis of the bore 72. The orifice 77 discharges through the larger opening 78, and through the rotor wall cavity 72. The outer end of the body 73 is provided with the integral lug 81, which is adapted to engage within the arcuate groove 82. By turning the body from the position shown in Figures 9 and 10, the lug 81 is removed from the groove 82, thereby permitting the nozzle assembly to be retracted from the rotor.
It will be evident from the foregoing that I have provided a nozzle construction which enables removal and replacement of nozzles without access to the interior of the rotor, or in other words by operations which are completely exterior. Therefore nozzles can be replaced, or serviced to unplug the same, with a minimum expenditure of time and labor. My nozzle construction can be used to advantage with a wide variety of centrifuges, including particularly centrifuges of the continuous operating type as shown for example in Patent 1,945,786. The underfiow discharge nozzles of such centrifuges frequently handle components which may tend to cause relatively rapid Wear, or plugging or clogging of the discharge orifices. With a machine equipped with my nozzle construction, nozzles can be quickly replaced as desired, whereby the machine may operate continuously over long periods with a minimum of shut-down time for replacement or servicing.
I claim:
1. In combination with a centrifuge rotor having an annular wall provided with an opening to receive a discharge nozzle, of a discharge nozzle comprising a body dimensioned to slidably fit within said opening when applied from the exterior of the rotor, said body being formed to provide a discharge orifice, means carried by the outer end portion of said body forming a detachable interlock between the body and said wall, said last named means including an element secured to the body adapted to interlock with the wall responsive to turning of the body, and means disposed on the inner side of said interlocking means for forming a seal between the body and said wall.
2. in combination with a centrifuge rotor having an annular wall provided with an opening to receive a discharge nozzle, of a discharge nozzle comprising a body annularly contoured to slidably fit within said opening when applied from the exterior of the rotor, said body providing a material discharge orifice, a lug carried by the body, means forming an interlocking recess in the wall for receiving said lug responsive to turning of the body after application of the nozzle within the wall, and means disposed on the inner side of the recess for forming a seal between the body and said wall.
3. In combination with a centrifuge rotor having an annular wall provided with an opening to receive a discharge nozzle, of a discharge nozzle comprising an annular body dimensioned to slidably fit within said opening when applied from the exterior of the rotor, means including a resilient seal ring carried by the body and serving to establish a fluid tight seal between the body and the wall, and means forming a detachable interlock between the outer end portion of the body and said wall, the seal ring being disposed inwardly of said last named means.
4. A nozzle construction as in claim 1 in which the orifice discharges in a direction which is generally lateral to the axis of the body, and in which the body can be adjusted relative to the wall to adjust the angle of discharge.
5. A nozzle construction as in claim 4 in which an adjustable member is provided for adjusting the normal positiltlan of the nozzle body with respect to the direction of disc arge.
6. A nozzle construction as in claim 1 in which the orifice discharges in a direction in alignment with the axis of the body, and in which the axis of the body is inclined rearwardly with respect to the direction of rotation of the rotor.
7. A nozzle construction as in claim 1 in which the body is provided with a removable liner, the liner being formed of hard wear-resisting material and being provided with an opening to provide said discharge orifice.
8. In combination with a centrifuge rotor having an annular wall provided with a smooth cylindrical bore to receive a discharge nozzle, of a discharge nozzle comprising a body having a smooth surfaced cylindrical portion dimensioned to slidably fit within said opening when applied from the exterior of the rotor, means including a resilient seal ring carrid-bysaid cylindrical body portion and serving to establisha fluid tight seal betwen the body and the adjacent surface of 'said bore, and means forming a detachable interlock between the outer end portion of,
the body and said wall, said means including a lug carried by the outer end portion of the body and an interlocking recess in the wall for receiving said lug.
9. In combination with a centrifuge rotor having an annular wall providedwith a radially disposed smooth cylindrical bore to receive a discharge nozzle, of a discharge nozzle comprising a body having a smooth surfaced cylindrical portion dimensioned to slidably fit within said opening when applied from the exterior of the rotor, means including a resilient seal ring carried by the cylindrical body portion and serving to establish a fluid tight seal between the body and the cylindrical surface of said bore, said cylindrical body portion having an axially disposed passage and the outer end portion of the body hav ing a discharge orifice communicating with the passage and directed to discharge material laterally with respect to the axis of said cylindrical portion, said wall having a cavity adjacentone side of said bore for accommodating material discharging from said orifice, the outer end of the body being'substantially flush with the outer periphery of the wall, '*a rid means forming a detachable interlock between'the outer end portion of the body and said wall, said means including a lug attached to the outer end portion of the body and located diametrically opposite said orifice and a lug accommodating recess formed in said wall located diametrically opposite to said cavity.
References Cited in the tile of this patent UNITED STATES PATENTS Number Name Date 2,060,239 Peltzer Nov. 10, 1936 2,410,313 Strezynski Oct. 29, 1946 2,590,735 Svensjo Mar. 25, 1952
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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120261B (en) * 1958-06-28 1961-12-21 Doerries A G O Centrifugal separator for cleaning fiber suspensions
US3075696A (en) * 1959-05-07 1963-01-29 Sharples Corp Centrifuge nozzle holders
US3080109A (en) * 1958-11-13 1963-03-05 Dorr Oliver Inc Centrifuge machine
US3192149A (en) * 1961-10-19 1965-06-29 Pennsalt Chemicals Corp Separation of components of liquidsolids mixtures
US3228598A (en) * 1961-10-19 1966-01-11 Pennsalt Chemicals Corp Centrifuge discharge means
US3368747A (en) * 1965-10-20 1968-02-13 Pennsalt Chemicals Corp Centrifuge
US3454226A (en) * 1965-03-26 1969-07-08 Niro Atomizer As Atomizer wheel for the atomization of suspensions of hard-wearing materials
US3640467A (en) * 1968-11-05 1972-02-08 Niro Atomizer As Atomizer wheel with wear-resistant, sintered bushings
FR2186297A1 (en) * 1972-05-31 1974-01-11 Pennwalt Corp
USRE29083E (en) * 1965-03-26 1976-12-21 Aktieselskabet Niro Atomizer Atomizer wheel for the atomization of suspensions of hard-wearing materials
FR2498950A1 (en) * 1981-02-03 1982-08-06 Westfalia Separator Ag OUTPUT NOZZLE OF A CENTRIFUGE DRUM
US4684065A (en) * 1985-04-10 1987-08-04 A/S Niro Atomizer Atomizer wheel with steel bushings
DE3922619C1 (en) * 1989-07-10 1990-10-04 Westfalia Separator Ag, 4740 Oelde, De
US4966576A (en) * 1986-06-07 1990-10-30 Westfalia Separator Ag Continuously operating centrifuge drum
WO1999020400A1 (en) 1997-10-17 1999-04-29 Fluid-Quip, Inc. Nozzle for centrifuge rotors and method of removing same
US6511005B2 (en) 2001-03-30 2003-01-28 Fluid-Quip, Inc. Bowl centrifuge nozzle
DE20219551U1 (en) * 2002-12-16 2004-04-29 Westfalia Separator Ag Centrifuge, in particular separator, with solids outlet nozzles
WO2006029200A1 (en) * 2004-09-08 2006-03-16 Alfa Laval Corporate Ab Centrifuge nozzle and method and apparatus for inserting said nozzle into a centrifuge bowl
JP2007222783A (en) * 2006-02-23 2007-09-06 Mitsubishi Heavy Ind Ltd Spray disk structure of rotary atomizer
DE102006053491A1 (en) * 2006-11-14 2008-05-15 Westfalia Separator Ag Centrifuge, in particular separator, with solids outlet nozzles
CN102553729A (en) * 2011-12-29 2012-07-11 上海航发机械有限公司 Combined nozzle of disc type separator
DE102012111801A1 (en) * 2012-12-05 2014-06-05 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifuge drum
EP2962762A1 (en) 2014-07-04 2016-01-06 Andritz Frautech S.r.l. Discharge nozzle for nozzle separator
US20190099763A1 (en) * 2016-03-24 2019-04-04 Fluid-Quip, Inc. Centrifuge rotor with staggered nozzles for use in a disc nozzle centrifuge
US10507473B2 (en) 2014-07-04 2019-12-17 Andritz Frautech S.R.L. Nozzle separator bowl
CN112805093A (en) * 2018-08-13 2021-05-14 福乐伟欧洲公司 Outlet nozzle for a centrifuge bowl, nozzle insert, centrifuge bowl, assembly tool and method for assembling an outlet nozzle
US11020754B2 (en) * 2016-04-29 2021-06-01 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060239A (en) * 1936-11-10 Centrifuge construction
US2410313A (en) * 1944-04-19 1946-10-29 Laval Separator Co De Centrifugal separating bowl
US2590735A (en) * 1948-11-23 1952-03-25 Separator Ab Centrifugal bowl for separating sludge from liquids

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060239A (en) * 1936-11-10 Centrifuge construction
US2410313A (en) * 1944-04-19 1946-10-29 Laval Separator Co De Centrifugal separating bowl
US2590735A (en) * 1948-11-23 1952-03-25 Separator Ab Centrifugal bowl for separating sludge from liquids

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120261B (en) * 1958-06-28 1961-12-21 Doerries A G O Centrifugal separator for cleaning fiber suspensions
US3080109A (en) * 1958-11-13 1963-03-05 Dorr Oliver Inc Centrifuge machine
US3075696A (en) * 1959-05-07 1963-01-29 Sharples Corp Centrifuge nozzle holders
US3192149A (en) * 1961-10-19 1965-06-29 Pennsalt Chemicals Corp Separation of components of liquidsolids mixtures
US3228598A (en) * 1961-10-19 1966-01-11 Pennsalt Chemicals Corp Centrifuge discharge means
USRE29083E (en) * 1965-03-26 1976-12-21 Aktieselskabet Niro Atomizer Atomizer wheel for the atomization of suspensions of hard-wearing materials
US3454226A (en) * 1965-03-26 1969-07-08 Niro Atomizer As Atomizer wheel for the atomization of suspensions of hard-wearing materials
USRE32064E (en) * 1965-03-26 1986-01-14 Aktieselskabet Niro Atomizer Atomizer wheel for the atomization of suspensions of hard-wearing materials
US3368747A (en) * 1965-10-20 1968-02-13 Pennsalt Chemicals Corp Centrifuge
USRE30963E (en) * 1968-11-05 1982-06-08 Aktieselskabet Niro Atomizer Atomizer wheel with wear-resistant, sintered bushings
US3640467A (en) * 1968-11-05 1972-02-08 Niro Atomizer As Atomizer wheel with wear-resistant, sintered bushings
FR2186297A1 (en) * 1972-05-31 1974-01-11 Pennwalt Corp
FR2498950A1 (en) * 1981-02-03 1982-08-06 Westfalia Separator Ag OUTPUT NOZZLE OF A CENTRIFUGE DRUM
DE3103531A1 (en) * 1981-02-03 1982-08-12 Westfalia Separator Ag, 4740 Oelde OUTLET NOZZLE FOR CENTRIFUGAL DRUM
US4392845A (en) * 1981-02-03 1983-07-12 Westfalia Separator Ag Discharge nozzle for centrifugal separator drums
US4684065A (en) * 1985-04-10 1987-08-04 A/S Niro Atomizer Atomizer wheel with steel bushings
US4966576A (en) * 1986-06-07 1990-10-30 Westfalia Separator Ag Continuously operating centrifuge drum
DE3922619C1 (en) * 1989-07-10 1990-10-04 Westfalia Separator Ag, 4740 Oelde, De
US5033680A (en) * 1989-07-10 1991-07-23 Westfalia Separator Ag Outlet nozzle for centrifuge drums
WO1999020400A1 (en) 1997-10-17 1999-04-29 Fluid-Quip, Inc. Nozzle for centrifuge rotors and method of removing same
US6216959B1 (en) 1997-10-17 2001-04-17 Fluid-Quip, Inc. Nozzle for centrifuge rotors and method of removing same
US6511005B2 (en) 2001-03-30 2003-01-28 Fluid-Quip, Inc. Bowl centrifuge nozzle
DE20219551U1 (en) * 2002-12-16 2004-04-29 Westfalia Separator Ag Centrifuge, in particular separator, with solids outlet nozzles
US7614995B2 (en) 2002-12-16 2009-11-10 Westfalia Separator Ag Centrifuge having solids discharge nozzles with wear protection
US20060166803A1 (en) * 2002-12-16 2006-07-27 Dieter Schulz Centrifuge particularyly a separator, having solids dischagre zozzles and wear protection
US8672243B2 (en) 2004-09-08 2014-03-18 Alfa Laval Corporate Ab Centrifuge nozzle and method and apparatus for inserting said nozzle into a centrifuge bowl
US20090140081A1 (en) * 2004-09-08 2009-06-04 Joseph Turcic Centrifuge nozzle and method and apparatus for inserting said nozzle into a centrifuge bowl
JP4740950B2 (en) * 2004-09-08 2011-08-03 アルファ ラヴァル コーポレイト アクチボラゲット Centrifugal nozzle and method and apparatus for inserting the nozzle into a centrifugal bowl
CN101060934B (en) * 2004-09-08 2013-01-02 阿尔法拉瓦尔股份有限公司 Centrifuge nozzle and method and apparatus for inserting the nozzle into a centrifuge bowl
WO2006029200A1 (en) * 2004-09-08 2006-03-16 Alfa Laval Corporate Ab Centrifuge nozzle and method and apparatus for inserting said nozzle into a centrifuge bowl
JP2008512240A (en) * 2004-09-08 2008-04-24 アルファ ラヴァル コーポレイト アクチボラゲット Centrifugal nozzle and method and apparatus for inserting the nozzle into a centrifugal bowl
JP2007222783A (en) * 2006-02-23 2007-09-06 Mitsubishi Heavy Ind Ltd Spray disk structure of rotary atomizer
DE102006053491A1 (en) * 2006-11-14 2008-05-15 Westfalia Separator Ag Centrifuge, in particular separator, with solids outlet nozzles
CN102553729A (en) * 2011-12-29 2012-07-11 上海航发机械有限公司 Combined nozzle of disc type separator
EP3488934A1 (en) * 2012-12-05 2019-05-29 GEA Mechanical Equipment GmbH Outlet nozzle for a centrifuge drum
DE102012111801A1 (en) * 2012-12-05 2014-06-05 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifuge drum
US10315203B2 (en) 2012-12-05 2019-06-11 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifuge drum
US20160001303A1 (en) * 2014-07-04 2016-01-07 Andritz Frautech S.R.L. Discharge Nozzle for Nozzle Separator
EP2962762A1 (en) 2014-07-04 2016-01-06 Andritz Frautech S.r.l. Discharge nozzle for nozzle separator
AU2015203366B2 (en) * 2014-07-04 2019-09-19 Frautech Separators Srl Discharge nozzle for nozzle separator
US10507473B2 (en) 2014-07-04 2019-12-17 Andritz Frautech S.R.L. Nozzle separator bowl
US20190099763A1 (en) * 2016-03-24 2019-04-04 Fluid-Quip, Inc. Centrifuge rotor with staggered nozzles for use in a disc nozzle centrifuge
US11020754B2 (en) * 2016-04-29 2021-06-01 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool
US20210178407A1 (en) * 2016-04-29 2021-06-17 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool
US11701669B2 (en) * 2016-04-29 2023-07-18 Gea Mechanical Equipment Gmbh Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool
CN112805093A (en) * 2018-08-13 2021-05-14 福乐伟欧洲公司 Outlet nozzle for a centrifuge bowl, nozzle insert, centrifuge bowl, assembly tool and method for assembling an outlet nozzle

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