US1887476A - Centrifugal separator - Google Patents

Centrifugal separator Download PDF

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Publication number
US1887476A
US1887476A US482659A US48265930A US1887476A US 1887476 A US1887476 A US 1887476A US 482659 A US482659 A US 482659A US 48265930 A US48265930 A US 48265930A US 1887476 A US1887476 A US 1887476A
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United States
Prior art keywords
bowl
liquid
chamber
channels
openings
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Expired - Lifetime
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US482659A
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English (en)
Inventor
Lindgren Hans Olof
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
De Laval Separator Co
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De Laval Separator Co
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Filing date
Publication date
Application filed by De Laval Separator Co filed Critical De Laval Separator 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

Definitions

  • the feeding of such addition liquid is attended with great difficulties.
  • the liquid must, of course, be introduced into the bowl in thenei hborhood of its center and be thence con ucted to the neighborhood of the periphery, preferably through separate channels which avoid admixture of the addition' liquid with the contents of the bowl undergoing' separation.
  • the channels should be so formed that they can be easily cleaned.
  • nozzles communicating with the peripheral part of the separating space of the bowl, the openings alsohavingorices communicating with a collection; vessel out-f side the bowl.
  • - Channels for-addition liquid communicate with the chambers formed between said nozzles and orifices. It ispossi-bleV to a limited degree to regulate the pressure of the liquid in said chambers by creating through the nozzles a directed kflow of liquid sufficiently strong to prevent liquid from streaming out through the nozzles but Iloty suiicientlystrong to hinder outflow of solidsk or sludge through the nozzles.
  • Fig'. 1 vis a vertical section througha bowl embodying my invention.
  • Fig. 2 is a similar view of another embodiment of the invention.V Fig. 2 attains substantially all the objects of mylinvention,'whereas Fig ⁇ . ,1 comprises only those inventive features lirst hereinbefore described. n 4 f Referring rst to the constructionV of Fig.
  • vuid constituents inV addition to heavier substances, such as heavier solids, but comprises only such heavier substances and light liquid,
  • Openings m are preferably provided with nozzles of known type.
  • the flushing or addition liquid is" intro ⁇ quizzed through a tube n, positioned inside and concentricwith tube a. Tube n feeds into a This chamber is situated in the upper portion of the hood, preferably just under chamber o, and is provided with conveyors p, which'compel the addition liquid to rotate with the bowl. From chamber o the Y addition liquid flows through channels 1' in the'bowl hood to the peripheral part of the bowl, preferably close to outlets m.
  • n form a complete bowl hood by inserting in the body 'rv a special element y yiii which are formed the feed chamber c for the original mixture, the channels e for conveying this mixture to the separating chamber of the l bowl, thevfeed chamber o for addition liquid,
  • the channels r for outflow of heavy liquid are preferably formed f between the body af: and the element y by rifling the outer side of one aiid/or the inner side of the other.
  • filler p pieces provided with sliding surfaces t to promote the iow of heavy materials to outlets fm. These filler pieces may be fixed to or integral with the inserted element y.
  • the inserted element y of Fig. 2 is provided with a chamber 10, which is preferably ringshaped, although it need not extend continuously around the bowl. From chamber 10 extend an inner opening into the peripheral part, or sludge space, of the separating chamber of the bowl and an router opening discharging into a collection vessel (not shown) outside the bowl. These openings are formed, preferably, in members 11 and 12, which are insertabley and removable and may be exchanged for other members having different sized openings. To the ring-shaped chamber 10 addition liquid is fed through channels fr. Only one channel 1, if it be of suitable dimensions, is required, but for proper distribution several such channels are desirable.
  • the regulating devices 't' and lc are required in order to adapt the bowl tooperate satisfactorily ⁇ with different mixtures to be separated and with different addition liquids.
  • the exchangeable discs permit change of radial distance, between the outlet openings for the light liquid and the outlet openings for the heavy liquid.
  • the regulating members 7c preferably consist of turnable screws provided with eccentric holes.
  • the pressure of the liquid in chamber 10 must be determined in such manner that addition liquid is led therefrom'V into the separating chamber in order to prevent outow from the separating chamber of theseparated heavy liquid constituent of the original mixture. This is generally desirable in order to preventloss of such liquid.
  • vcases in which a small loss of separated liquid is permissive althougli iniiow of addition liquid into the separating space of the bowl and' its admixture therein with separated liquid may be undesirable. It is, therefore, necessary to provide means for regulating the supply ofl addition liquid.
  • the bowl is provided with the regulating devices 13 and 14.
  • the regulating device 14 which may be' a hollow screw, determines the inner level of liquid in chamber o.
  • the pressure of liquid in chamber 10 ⁇ is, however, chiefly determined by the regulating device 13, which also may Une-rie"v heavy liquid constituent of the original' mixture is separately Adischarged from" the bowl, being prevented, to the extent desired, from admixtui'e with the addition liquid.
  • the pressureregulating means described may be adjusted either toY allow a slight inflow of ,addition liquid through nozzles 11- to prevent loss of the separated liquid constituent ofthe original mixture, or to'allow a slight outflow ofA such separated liquid constituent through nozzles 1l to prevent contamination ⁇ with addition liquid of the separated liquid constituent that is discharged through channels g, and that it is also possible, by careful regulation of pressure, to substantially prevent flow of either addition liquid or separatedliquid through nozzles 11.
  • a centrifugal separator comprising a bowl body, ka lining element .withinfand contacting with, and having a neck extending above, the bowl body and forming therewith the bowl hood, a feed chamber for the mixture to be separated formed in the neck of the lining element, and channels connecting the feed chamber with the separator space of the bowl, said lining element and channelsbeing in fixed relation with the bowl body during operation.V
  • a centrifugal separator comprising a bowl body, a lining element within andl contacting with, and having a neckV extending above, the bowl body and forming therewith the bowl hood, a feed chamber for the mixture to be separated formed in the neck ofthe lining element, and channels formed in the lining elementl and connecting the feed' chamber with the separating chamber of l the bowl, said lining element being in fixed with the bowl bodyv during operarelation tion.
  • a centrifugal separator comprising a bowl body, a lining element within and-contacting with, and having a neck extending above, the bowl body and forming therewith the bowl hood, the bowl having peripheral sludge-discharge openings, means to admit" ratingspace of the bowl,means to discharge the mixture to be separated into the separating space of the bowl, a feed chamber for addition liquid formed in the neck of the liner element, and channels extending from the feed chamber to the peripheral part 1 of the bowl, said lining element being iii fixed relation with the bowl body during operation.
  • a centrifugal separator comprising a bowl body, a lining element within and contacting-witli, and having a neck extendingv above, the vbowl body and forming therewith the bowl hood,the'bowl having peripheral sludge-dischargeV openings, means to admit the mixture to Vbe separated into the' separating space of the bowl, a feed 'chamber for addition liquid formed in the neck of the liner element, and substantially straight,
  • a centrifugal separator comprising a bowl body, a lining element within and contacting with, and having a neck extending above, thebowl body and forming therewith the bowl hood, the bowl having Vperipheral of said lining element containing a feed chamber for the mixture to be separated and a feed chamber for Vaddition liquid, channels connecting the first named feed chamber with the separating space of the bowl, and channels connecting the second Y named. feed chamberwith a peripheral partof the bowl, said liningvelement and channels being'in fixed relation with opera-tion.
  • a centrifugal separator comprising' a bowl body, a lining element within and contacting with, and having aneck extending above, the bowl body and forming therewith the bowl hood, the bowl having peripheral sludge-discharge openings, the upper part ofV said lining element containing a feed cham.
  • the hood being provided with channels connectingtlie ist namedfeed chamber with the separating space of the bowl, channels connecting thesecond named feed chamber with the peripheral part of ythe bowl, andoutflow channels for j relatively *heavy and Vlight liquids, said 'lining element and channels being. in fixed relationwith therbowl body during operation.
  • a centrifugal-separator comprising a bowl having a main separating space and whose wall is provided lwith a chamber having inner openings into the sludge'space of the main separating space of the'bowl and outer openings t0 the Voutside 0f the bowl, means to feed the mixture to be seperated into the sepaseparated liquid fromthe separating space of the bowl, achannel adapted to convey addi-- thev howl body' during Ae5 a sludge-dischargeopenings, the upper part icc and channels ybeing inxed relation with the bowl wall during operation.
  • a centrifugal bowl having a main sep- Y arating space and Whose wallis provided with a ring-shapedchamber having inner openings into the sludge space ofthe main separating space of the bowl and outer openings to the outside of the bowl, means to feed the mixture to be separated to the separating space of the bowl, means to discharge liquid from the bowl, a feed chamber for addition liquid formed in the upper part of the bowl, and substantially straight closed feed channels connecting said feed chamber with said ring-shaped chamber, said liquid discharge means and channels beingv'in fixed relation with the bowl during operation.
  • a centrifugal bowl having a main separating space and whose wall is provided with a peripheral chamber having inner openings into the sludge space of the main separating space of the bowl and outer openings to the outside of the bowl, means to feed the mixture to be separated tothe separating space of the bowl, means to discharge liquid fromthe bowl, a feed chamber for 'addition liquid formed in the upper part of the bowl, substantially straight closed feed channels connecting said feed chamber with saidperipheral chamber, and channels adapted to discharge addition liquid from said peripheral chamber, said liquiddischarge means and channels being in fixed relation with the bowl during operation.
  • a centrifugal separator comprising a bowl body having a main separating space and a lining element within and contacting with thebowl'body land forming therewith the bowl hood, means to feed the mixture to be separated into the separator space ofthe bowl, means to discharge liquid from the separator space of the bowl, a chamber formed in the lining element, there being inner openings from said chamber into the sludge space of the bowl and outer openings from said chamber through the bowl body, and means to supply anaddition liquid to said chamber, said lining element and liquid discharge means being in fixed relation with the bowl body during operation.
  • a centrifugal separator comprising a bowl body having a main separating space and a lining element withiny and contacting with the bowl body and forming therewith the bowl hood, means to feed the mixture to be separated into the separator space of the bowl, means to discharge liquid from the separator space of the bowl, a chamber formed in thelining element, there being inner openings from said chamber into the sludge space ofthe bowl and cuter openings from said chamber through the bowl body, means to supply an addition liquid to said chamber, and means to discharge addition liquid from said chamber, saidlining element and liquid discharge means being in fixed relation with the bowl body during operation.
  • a centrifugal bowl provided with a channel for supplying the mixture to be separated to the separating space ofthe bowl, an outiiow channel for :separated liquid, peripheral sludge-discharge openings in series, a channel for supplying addition liquid to the peripheral part ⁇ of the bowl between the sludge discharge openings, pressure regulating ports relatively near theaxis of the bowl, and a' channel for discharging addition liquid from the peripheral part ofthe bowl through said pressure regulating ports.
  • a centrifugal Yseparator' comprising a bowl having a main separating space and whose wallV is provided with a chamber having openings into the sludge space of the main separating space of the Vbowl and openings tothe outside of the bowl, means to feed the mixture to be separated into the separating space of the bowl, means todischarge separated liquid from the separating space of the bowl, a channel adapted to conveyaddition liquid to said chamber, a channel adapted to discharge .j addition liquid from said chamber, and adjustable means to continucusly and uniformly regulate' the pressure in said chamber.
  • a centrifugal separator comprising a bowl having al main separating space and whose wall is provided with a chamber havingV openings into the sludge space of the main separating space of the bowl and openings to the outside of the bowl, means to feed the mixture to be separated into the separating space of the bowl, means to discharge separated liquid from the separating space of the bowl, achannel adapted to convey addition liquid to said chamber, a ⁇ - channel independent of said openings, adapted to discharge addi. tion liquid from said chamber, and a constantly open regulating device controlling the out let from the last named channel and adapted to continuously and uniformly regulate the pressure in said chamber.
  • a centrifugal separator comprising a bowl body having a main separating space and a lining element within and contacting with the bowl body and forming therewith a bowl hood, and separate channels for conveying the mixture to be separated into the separating space of the bowl and an addition liquid to the peripheral part of the bowl, said channels having walls kformed by said lining element, said lining element being in fixed relation with the bowl body during operation.

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  • Centrifugal Separators (AREA)
  • Paper (AREA)
US482659A 1929-09-28 1930-09-18 Centrifugal separator Expired - Lifetime US1887476A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE349880X 1929-09-28

Publications (1)

Publication Number Publication Date
US1887476A true US1887476A (en) 1932-11-08

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Family Applications (1)

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US482659A Expired - Lifetime US1887476A (en) 1929-09-28 1930-09-18 Centrifugal separator

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US (1) US1887476A (fr)
DE (1) DE580259C (fr)
FR (1) FR702618A (fr)
GB (1) GB349880A (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2478992A (en) * 1946-08-10 1949-08-16 Laval Separator Co De Centrifugal bowl
US2495950A (en) * 1940-11-22 1950-01-31 Werkspoor Nv Centrifugal bowl separator
US2599619A (en) * 1947-06-13 1952-06-10 Separator Ab Method and apparatus for centrifugal separation
US2731331A (en) * 1953-09-25 1956-01-17 Laval Separator Co De Countercurrent extractor bowl
US2755293A (en) * 1951-12-04 1956-07-17 Barber Greene Co Method of treating materials
US2758784A (en) * 1951-08-02 1956-08-14 Walter J Podbielniak Centrifugal countercurrent exchange device
US2905643A (en) * 1954-06-14 1959-09-22 Thiele Kaolin Co Method of dewatering clay
US4326666A (en) * 1978-07-05 1982-04-27 Hitachi, Ltd. Centrifugal type counterflow contact apparatus
WO1989008502A1 (fr) * 1988-03-11 1989-09-21 Alfa-Laval Separation Ab Separateur centrifuge
US4915682A (en) * 1987-10-13 1990-04-10 Alfa-Laval Separation Ab Centrifugal separator
US5518494A (en) * 1992-10-19 1996-05-21 Alfa Laval Separation Ab Centrifugal separator with air entrainment suppression

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495950A (en) * 1940-11-22 1950-01-31 Werkspoor Nv Centrifugal bowl separator
US2478992A (en) * 1946-08-10 1949-08-16 Laval Separator Co De Centrifugal bowl
US2599619A (en) * 1947-06-13 1952-06-10 Separator Ab Method and apparatus for centrifugal separation
US2758784A (en) * 1951-08-02 1956-08-14 Walter J Podbielniak Centrifugal countercurrent exchange device
US2755293A (en) * 1951-12-04 1956-07-17 Barber Greene Co Method of treating materials
US2731331A (en) * 1953-09-25 1956-01-17 Laval Separator Co De Countercurrent extractor bowl
US2905643A (en) * 1954-06-14 1959-09-22 Thiele Kaolin Co Method of dewatering clay
US4326666A (en) * 1978-07-05 1982-04-27 Hitachi, Ltd. Centrifugal type counterflow contact apparatus
US4915682A (en) * 1987-10-13 1990-04-10 Alfa-Laval Separation Ab Centrifugal separator
WO1989008502A1 (fr) * 1988-03-11 1989-09-21 Alfa-Laval Separation Ab Separateur centrifuge
US5518494A (en) * 1992-10-19 1996-05-21 Alfa Laval Separation Ab Centrifugal separator with air entrainment suppression

Also Published As

Publication number Publication date
DE580259C (de) 1933-07-07
FR702618A (fr) 1931-04-13
GB349880A (en) 1931-06-04

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