US3275230A - Bowl centrifuge - Google Patents

Bowl centrifuge Download PDF

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Publication number
US3275230A
US3275230A US385333A US38533364A US3275230A US 3275230 A US3275230 A US 3275230A US 385333 A US385333 A US 385333A US 38533364 A US38533364 A US 38533364A US 3275230 A US3275230 A US 3275230A
Authority
US
United States
Prior art keywords
disks
spiral
jacket
centrifuge
bowl centrifuge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US385333A
Other languages
English (en)
Inventor
Hiller Georg
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.)
FLOTTWEG MOTORENWERK DR GEORG
FLOTTWEG-MOTORENWERK DR GEORG BRUCKMAYER
Original Assignee
FLOTTWEG MOTORENWERK DR GEORG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FLOTTWEG MOTORENWERK DR GEORG filed Critical FLOTTWEG MOTORENWERK DR GEORG
Priority to US385333A priority Critical patent/US3275230A/en
Application granted granted Critical
Publication of US3275230A publication Critical patent/US3275230A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02K—JET-PROPULSION PLANTS
    • F02K1/00—Plants characterised by the form or arrangement of the jet pipe or nozzle; Jet pipes or nozzles peculiar thereto
    • F02K1/54—Nozzles having means for reversing jet thrust
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G1/00—Mirrors; Picture frames or the like, e.g. provided with heating, lighting or ventilating means
    • A47G1/14—Photograph stands
    • A47G1/141—Photograph stands made of sheet material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045—Plurality of essentially parallel plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • 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
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
    • 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
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • 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
    • B04B1/20—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
    • B04B2001/2066—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl with additional disc stacks

Definitions

  • the present invention relates to a bowl centrifuge which is provided with a plurality of disks within a fully closed bowl or packet which has a conical shape at least at one end thereof, and with a conveying spiral which extends outside of the operating range of the disks and is rigidly but removably secured to the disks. These parts may be rotated together at a speed different from that of the jacket of the centrifuge and thus relative to this jacket.
  • the centrifuge may also be provided with several spirals and, if desired, also with a conveying spiral which serves for a preclarification of liquids.
  • the invention provides that the disks themselves form the supporting elements of the spiral or spirals. Since it is now no longer necessary to connect the supporting element of the spiral or spirals to the disks in a manner so .as to be removable therefrom, but each spiral is now removably connected directly to the disks, all of the mentioned disadvantages of the previous centrifuges of this type are eliminated in an extremely simple manner.
  • One advantageous feature of the invention consists in forming the spiral of a plurality of parts which are spaced from each other.
  • FIGURE 1 shows a partial section of a centrifuge according to the invention which is provided with disks which are spaced from each other by spacing plates which project beyond the periphery of the disks and the projecting parts of which are twisted so as to form parts of a spiral;
  • FIGURE 2 shows a cross section of FIGURE 1
  • FIGURE 3 shows a view similar to FIGURE 1 of a modification of the invention, in which a continuous spiral strip which is composed of four quadrants is secured to outer extensions of spacing plates and winds spirally around the outer edges of the set of disks;
  • FIGURE 4 shows a cross section of FIGURE 3
  • FIGURE 5 shows another view similar to FIGURE 1 of another modification of the invention, in which a continuous spiral strip is inserted into grooves which are provided in the outer edge portions of the disks;
  • FIGURE 6 shows a cross section of FIGURE 5; while FIGURE 7 shows a longitudinal section of a doublecone full-jacket centrifuge according to the invention, in which the spiral parts which are connected to the disks are designed in accordance with FIGURES 1 and 2.
  • the jacket 1 of the centrifuge which is adapted to be rotated at a certain speed contains a central support 2 for a plurality of disks 3 which is likewise rotatably mounted and adapted to be driven at a speed different from that of jacket 1 so that the disks 3 revolve relative to the jacket 1.
  • the adjacent disks 3 are spaced from each other by spacing plates, the ends 4 of which project beyond the periphery of the set of disks 3 and are twisted so as to form parts of an interrupted spiral.
  • FIGURES 3 and 4 show a modification of the invention in which the spiral is composed of four quadrant strips 5 which are secured to the outer extensions of spacing plates 6.
  • a further modification of the invention as shown in FIGURES 5 and 6 comprises a continuous spiral strip 7 which is inserted into grooves 8 which are cut into the outer edges of the disks 3.
  • FIGURE 7 A full-jacket centrifuge which is provided with disks according to the invention is illustrated in FIGURE 7 and comprises an outer bowl or jacket 10 which is rotatably mounted and contains coaxially thereto a hollow shaft 11 which is likewise rotatably mounted and carries two spiral conveyers 12 and 13 and disk-shaped inserts 20 of a construction in accordance with the disks 3 as shown in FIGURES 1 and 2.
  • the slurry of liquid and solids is fed into the centrifuge through a central feed pipe 14 and passes into a distributing chamber 15 from which it enters through openings 16 in the wall of the hollow shaft 11 into the settling chamber.
  • the coarse solids which are deposited on the inner surface of the jacket 10 are then conveyed by the conveyer spiral 12 in the settling chamber in the direction toward the outlet openings 17 through which they are discharged, while the finer solids pass together with the liquid from the settling chamber through one or more overflows 28 into a cylindrical chamber 19 which is outwardly limited by the jacket 1 which is rigidly secured to or integral with the conical jacket 10.
  • This chamber 19 contains the disk-shaped inserts 20 which correspond to the disks 3 according to FIGURES 1 and 2.
  • At the outer periphery of these disks conveyer elements 21 are mounted which correspond to the twisted spiral parts 4 according to FIGURES 1 and 2.
  • the fine solids which are deposited on the outer jacket 1 in the chamber 19 are conveyed in the direction toward the conveyer spiral 13 and are then discharged through the outlet openings 22.
  • the clarified liquid is discharged from the apparatus through one or more channels 23.
  • the speed at which the solids may be removed from the liquid may be' varied by varying the pitch of the spiral surfaces or by varying the speed of the driven parts. Since the individual parts are rigidly although removably connected to each other, they form a compact unit which may be easily balanced in sta tic and dynamic respects.
  • the invention has only been described with reference to certain preferred embodiments thereof, it is evident that it is the basic concept of the invention to provide the disks, which as such only affect the precipitation of the soilds, directly with spirally shaped conveyer elements which are effective in the chamber between the outer edges of the disks 3 or 20 and the inner wall surface of the jacket 1 and convey the separated solids in the axial direction. According to the invention the disks are therefore also employed as supports of the spiral conveyer elements.
  • a bowl centrifuge having a full outer jacket with at least a part thereof being of a conical shape, means for rotatably mounting said jacket, a central supporting member mounted within and rotatable relative to said jacket, a set of disks secured to said supporting member, spiral means removably secured directly to said set of disks and projecting from the outer periphery thereof, and means for rotating said jacket and said supporting member with said disks and said spiral means thereon at different speeds.
  • a bowl centrifuge as defined in claim 2 further comprising spacing plates separating said disks from each other and having parts projecting beyond the outer periphery of said disks, said projecting parts being bent so as to form said spiral sections.
  • a bowl centrifuge as defined in claim 1 in which said spiral means consist of at least one continuous spiral strip winding around the outer periphery of said set of disks and composed of a plurality of spiral sections secured to each other and to said disks.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Centrifugal Separators (AREA)
US385333A 1963-07-11 1964-07-27 Bowl centrifuge Expired - Lifetime US3275230A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US385333A US3275230A (en) 1963-07-11 1964-07-27 Bowl centrifuge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF40215A DE1279551B (de) 1963-07-11 1963-07-11 Vollmantel-Zentrifuge
US385333A US3275230A (en) 1963-07-11 1964-07-27 Bowl centrifuge

Publications (1)

Publication Number Publication Date
US3275230A true US3275230A (en) 1966-09-27

Family

ID=7098138

Family Applications (1)

Application Number Title Priority Date Filing Date
US385333A Expired - Lifetime US3275230A (en) 1963-07-11 1964-07-27 Bowl centrifuge

Country Status (8)

Country Link
US (1) US3275230A (de)
BE (1) BE650376A (de)
CH (1) CH430587A (de)
DE (1) DE1279551B (de)
DK (1) DK116790B (de)
FR (1) FR1455032A (de)
GB (1) GB999953A (de)
NL (1) NL6407866A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782623A (en) * 1970-06-11 1974-01-01 Krueger As I Decanting centrifuge for draining off water from sewage sludge
WO1993022062A1 (en) * 1992-04-29 1993-11-11 Noxon Ab Decanter centrifuge
US6508752B1 (en) * 1997-04-04 2003-01-21 Alfa Laval Ab Centrifugal separator having end walls and a central shaft to resist axially directed forces
US6561965B1 (en) 2000-10-20 2003-05-13 Alfa Laval Inc. Mist pump for a decanter centrifuge feed chamber
WO2016120202A1 (en) * 2015-01-30 2016-08-04 Andritz S.A.S. Solid bowl centrifuge

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449467A1 (fr) * 1979-02-23 1980-09-19 Saget Pierre Procede et appareil perfectionne le mettant en oeuvre pour la separation centrifuge d'au moins deux phases liquides d'un melange
FR2532198B1 (fr) * 1982-08-27 1985-06-21 Bertin & Cie Centrifugeuse a recuperation d'energie
FR2635023A1 (fr) * 1988-08-05 1990-02-09 Saget Pierre Appareil separateur centrifuge pour le traitement d'un melange liquide
US5222935A (en) * 1991-06-21 1993-06-29 Flottweg Gmbh Centrifuge with a screw and bristles for separating a suspension into a solids phase and at least one liquid phase
US5310399A (en) * 1991-08-20 1994-05-10 Kotobuki Techrex Ltd. Sedimentation centrifuge containing screw conveyor with fins
US5314399A (en) * 1991-08-20 1994-05-24 Kotobuki Techrex Ltd. Sedimentation centrifuge with helical fins mounted on the screw conveyor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US837695A (en) * 1905-05-19 1906-12-04 Separator Ab Centrifugal machine.
US1780655A (en) * 1928-11-02 1930-11-04 Nyrop Aage Sludge separator
US2711854A (en) * 1952-05-14 1955-06-28 Aktiebolag Separator Centrifuge for separating sludge from liquids

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575314C (de) * 1930-10-12 1933-04-27 Separator Ab Foerderschnecke fuer Schleudermaschinentrommeln
GB708590A (en) * 1951-05-16 1954-05-05 Separator Ab Improvements in or relating to the elimination of solid materials from oils

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US837695A (en) * 1905-05-19 1906-12-04 Separator Ab Centrifugal machine.
US1780655A (en) * 1928-11-02 1930-11-04 Nyrop Aage Sludge separator
US2711854A (en) * 1952-05-14 1955-06-28 Aktiebolag Separator Centrifuge for separating sludge from liquids

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782623A (en) * 1970-06-11 1974-01-01 Krueger As I Decanting centrifuge for draining off water from sewage sludge
WO1993022062A1 (en) * 1992-04-29 1993-11-11 Noxon Ab Decanter centrifuge
US6508752B1 (en) * 1997-04-04 2003-01-21 Alfa Laval Ab Centrifugal separator having end walls and a central shaft to resist axially directed forces
US6561965B1 (en) 2000-10-20 2003-05-13 Alfa Laval Inc. Mist pump for a decanter centrifuge feed chamber
WO2016120202A1 (en) * 2015-01-30 2016-08-04 Andritz S.A.S. Solid bowl centrifuge
CN107206396A (zh) * 2015-01-30 2017-09-26 安德里茨有限公司 实体转鼓式离心机
US20180001329A1 (en) * 2015-01-30 2018-01-04 Andritz S.A.S. Solid Bowl Centrifuge

Also Published As

Publication number Publication date
DE1279551B (de) 1968-10-03
FR1455032A (fr) 1966-10-07
NL6407866A (de) 1965-01-12
DK116790B (da) 1970-02-09
BE650376A (de) 1964-11-03
GB999953A (en) 1965-07-28
CH430587A (de) 1967-02-15

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