US3335946A - Separating disks for centrifuges - Google Patents
Separating disks for centrifuges Download PDFInfo
- Publication number
- US3335946A US3335946A US447209A US44720965A US3335946A US 3335946 A US3335946 A US 3335946A US 447209 A US447209 A US 447209A US 44720965 A US44720965 A US 44720965A US 3335946 A US3335946 A US 3335946A
- Authority
- US
- United States
- Prior art keywords
- disks
- separating
- separating disks
- centrifuges
- specific gravity
- 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
Links
- 230000005484 gravity Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 239000002184 metal Substances 0.000 description 11
- 239000006185 dispersion Substances 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
- B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape
Definitions
- This invention relates generally to the separating disks of centrifuges used in separating the liquid and solid constituents of a slurry or dispersion so as to obtain a concentrated slurry or dispersion, that is, the solids with a much reduced proportion of the liquid, or a clarified liquid.
- Centrifuges of the type described above generally include a hollow bowl rotated about its axis and containing an axial series of spaced, frusto-conically shaped separating disks of somewhat smaller diameter than the bowl shell.
- the slurry, dispersion or other incoming material to be centrifuged is admitted through feed channels which discharge near the outer edges of the separating disks, and the clarified liquid is removed from the bowl through an outlet positioned at or near the axis of rotation.
- the liquid constituent is made to flow centripetally, or radially inward, through the spaces between the separating disks in order to reach the outlet for the liquid and, during such flow, the solid particles are driven centrifugally so as to collect in the radially outward portion of the bowl shell beyond the perimeters of the separating disks.
- Discharge nozzles are further provided, in certain existing centrifuges, for discharging the concentrated solids which collect in the outer peripheral portion of the bowl shell.
- the separating disks are formed of thin sheet metal which is either stainless steel or treated so as to resist corrosion.
- Such existing sheet metal separating disks are further provided with spacing projections in the form of metal stampings which are welded to the conical surfaces of the disks at radially spaced intervals. It will be apparent that the manufacture of such sheet metal separating disks is difiicult and costly, as the disks must be accurately shaped and have smooth surfaces in order to ensure the high operating efliciency, and relatively low power consumption of the centrifuge.
- the existing separating disks of sheet metal have two further substantial disadvantages.
- the sheet metal pre viously used for the separating disks has a high modulus of elasticity in tension, for example, up to 20,000 kg./mm. in the case of steel, and, by reason of such high modulus of elasticity, the separating disks formed of sheet metal respond readily to vibration of the bowl or rotor of the centrifuge, which vibration may result from the dynamic unbalance of the separating disks.
- the vibrations of the separating discs interfere with the centrifugal separation of the dispersion or slurry in the thin layers or flows passing between the separating disks.
- the sheet metal for forming the separating disks usually has a specific gravity of approximately 8.0 which may be almost eight times larger than the specific gravity of the dispersion flowing between the separating disks so that any inaccuracy in the shape and balance of the separating disks with respect to the axis of rotation constitutes a source of dynamic unbalance giving rise to vibration of the rotated bowl or rotor.
- Such dynamic unbalance cannot be easily eliminated by balancing of the several separating disks, as it is difiicult to ensure the same relatively large number of disks will be assembled in the same order or sequence whenever the bowl or rotor is opened and has the disks removed therefrom.
- separating disks for centrifuges are formed of a material having a modulus of elasticity which is no greater than 1,000 kg./mm. and a specific gravity no greater than approximately 2.0, that is, not exceeding approximately two times that specific gravity of the dispersion which is to be centrifuged.
- FIG: 1 is an elevational view of a separating disk for a centrifuge in accordance with this invention.
- FIG. 2 is a sectional view taken along the lines 22 on FIG. 1.
- a separating disk 10 embodying this invention may be generally fr-usto-conical in shape and have radially directed rims 11 and 12 extending along its inner and outer peripheries. At least one of the conical surfaces of the disk 10 has suitably spaced projections 13 extending therefrom for the purpose of uniformly spacing apart adjacent separating disks when the latter are assembled in the bowl or rotor of a centrifuge.
- the separating disk 10 is formed of a material having a modulus of elasticity not greater than approximately 1,000 kg./mm. and a specific gravity not greater than approximately 2.0.
- synthetic resin materials satisfy the foregoing requirements for forming separating disks in accordance with this invention, such as, for example, polyethylene, polyvinyl chloride, polypropylene, textile and glass laminates, resins and the like. Separating disks for centrifuges formed of such synthetic materials in accordance with this invention can be conveniently molded, for example, by injecting molding, so that the spacing projections 13 can be simultaneously formed with the remainder of each separating disk and form integral parts of the latter.
- separating disks When separating disks are formed of a material with a relatively low modulus of elasticity, as in accordance with this invention, such disks serve to damp the vibrations of the rotated rotor or bowl and thus do not vibrate or respond to vibration of the rotor or bowl arising from any dynamic unbalance of the latter.
- the separating disks embodying this invention secure the smooth and elfective centrifugal separation of the solids from the liquid constituents in the layers of flows passing between the adjacent separating disks.
- the disks embodying this invention do not cause any appreciable or significant dynamic unbalance of the rotor or bowl. Even if there are inaccuracies in the shapes of the separating disks embodying this invention or in their concentricity with respect to the axis of rotation, such inaccuracies are substantially compensated by the filling of the spaces between adjacent separating disks with the dispersion flowing therethrough and having a specific gravity which is, at the worst, only one-half of the specific gravity of the material forming the disks.
- separating disks embodying this invention can 3 be conveniently molded by injection molding or other conventional molding procedures, the same can be very economically produced, particularly when one considers that the spacing projections are simultaneously formed thereon, rather than being separately attached, as in the case of the previously existing sheet metal separating disks, It will also be apparent that injection molded separating disks embodying this invention can be formed with a perfectly accurate shape and with smooth surfaces so as to promote the effective centrifugal separation of the liquid and solid constituents of a dispersion.
- the materials proposed for forming of the separating disks in accordance with this invention have a strength which is relatively low when compared with that of the sheet metal previously used for separating disks, such relatively low strength is not disadvantageous by reason of low specific gravity of the proposed materials which makes it possible for the stress resulting from the centrifugal force to be compensated, at least to a considerable extent, by the centripetal, or radially inwardly directed force or hydrostatic lift acting on the separating disks as a result of the radially inwardly directed flow between adjacent disks.
- the separating disks formed from the proposed synthetic materials in accordance with this invention have a further advantage in the resistance to abrasion of such materials by the dispersion flowing between the separating disks.
- a separating disk for a centrifuge said disk being of a material having a specific gravity of less than approximately 2.() and a modulus of elasticity in tension of less than approximately 1000 kg./mm.
- a molded separating disk for a centrifuge said disk being of generally frusto-conical configuration and having integral spacing projections extending from at least one surface thereof, said disk being of a synthetic material having a specific gravity of less than approximately 2.0 and a modulus of elasticity in tension of less than approximately 1000 kg./mm.
Landscapes
- Centrifugal Separators (AREA)
Description
Aug. 15, 1967 .1. PUTTERLl K 3,335,946
SEPARATING DISKS FOR CENTRIFUGES Filed April 12, 1965 INVENTOR.
United States Patent VO 3,335,946 SEPARATING DISKS FOR CENTRIFUGES Jan Putterlik, Prague, Czechoslovakia, assignor to Ceskoslovenska akademie ved, Prague, Czechoslovakia Filed Apr. 12, 1965, Ser. No. 447,209 Claims priority, application Czechoslovakia,
Apr. 14, 1964, 2,155/64 2 Claims. (Cl. 233-41) This invention relates generally to the separating disks of centrifuges used in separating the liquid and solid constituents of a slurry or dispersion so as to obtain a concentrated slurry or dispersion, that is, the solids with a much reduced proportion of the liquid, or a clarified liquid.
Centrifuges of the type described above generally include a hollow bowl rotated about its axis and containing an axial series of spaced, frusto-conically shaped separating disks of somewhat smaller diameter than the bowl shell. The slurry, dispersion or other incoming material to be centrifuged, is admitted through feed channels which discharge near the outer edges of the separating disks, and the clarified liquid is removed from the bowl through an outlet positioned at or near the axis of rotation. Thus, the liquid constituent is made to flow centripetally, or radially inward, through the spaces between the separating disks in order to reach the outlet for the liquid and, during such flow, the solid particles are driven centrifugally so as to collect in the radially outward portion of the bowl shell beyond the perimeters of the separating disks. Discharge nozzles are further provided, in certain existing centrifuges, for discharging the concentrated solids which collect in the outer peripheral portion of the bowl shell.
In existing centrifuges of the described character, the separating disks are formed of thin sheet metal which is either stainless steel or treated so as to resist corrosion. Such existing sheet metal separating disks are further provided with spacing projections in the form of metal stampings which are welded to the conical surfaces of the disks at radially spaced intervals. It will be apparent that the manufacture of such sheet metal separating disks is difiicult and costly, as the disks must be accurately shaped and have smooth surfaces in order to ensure the high operating efliciency, and relatively low power consumption of the centrifuge.
The existing separating disks of sheet metal have two further substantial disadvantages. The sheet metal pre viously used for the separating disks has a high modulus of elasticity in tension, for example, up to 20,000 kg./mm. in the case of steel, and, by reason of such high modulus of elasticity, the separating disks formed of sheet metal respond readily to vibration of the bowl or rotor of the centrifuge, which vibration may result from the dynamic unbalance of the separating disks. The vibrations of the separating discs interfere with the centrifugal separation of the dispersion or slurry in the thin layers or flows passing between the separating disks. Further, the sheet metal for forming the separating disks usually has a specific gravity of approximately 8.0 which may be almost eight times larger than the specific gravity of the dispersion flowing between the separating disks so that any inaccuracy in the shape and balance of the separating disks with respect to the axis of rotation constitutes a source of dynamic unbalance giving rise to vibration of the rotated bowl or rotor. Such dynamic unbalance cannot be easily eliminated by balancing of the several separating disks, as it is difiicult to ensure the same relatively large number of disks will be assembled in the same order or sequence whenever the bowl or rotor is opened and has the disks removed therefrom.
Accordingly, it is an object of this invention to provide separating disks for centrifuges which avoid the above mentioned disadvantages of the separating disks that have been heretofore available.
In accordance with an important aspect of this invention, separating disks for centrifuges are formed of a material having a modulus of elasticity which is no greater than 1,000 kg./mm. and a specific gravity no greater than approximately 2.0, that is, not exceeding approximately two times that specific gravity of the dispersion which is to be centrifuged.
The above, and other objects, features and advantages of this invention, will be apparent in the following detailed description of an illustrative embodiment thereof which is to be read in connection with the accompanying drawing, wherein:
FIG: 1 is an elevational view of a separating disk for a centrifuge in accordance with this invention; and
FIG. 2 is a sectional view taken along the lines 22 on FIG. 1.
Referring to the drawing in detail, it will be seen that a separating disk 10 embodying this invention may be generally fr-usto-conical in shape and have radially directed rims 11 and 12 extending along its inner and outer peripheries. At least one of the conical surfaces of the disk 10 has suitably spaced projections 13 extending therefrom for the purpose of uniformly spacing apart adjacent separating disks when the latter are assembled in the bowl or rotor of a centrifuge.
In accordance with this invention, the separating disk 10 is formed of a material having a modulus of elasticity not greater than approximately 1,000 kg./mm. and a specific gravity not greater than approximately 2.0. Many different types of synthetic resin materials satisfy the foregoing requirements for forming separating disks in accordance with this invention, such as, for example, polyethylene, polyvinyl chloride, polypropylene, textile and glass laminates, resins and the like. Separating disks for centrifuges formed of such synthetic materials in accordance with this invention can be conveniently molded, for example, by injecting molding, so that the spacing projections 13 can be simultaneously formed with the remainder of each separating disk and form integral parts of the latter.
When separating disks are formed of a material with a relatively low modulus of elasticity, as in accordance with this invention, such disks serve to damp the vibrations of the rotated rotor or bowl and thus do not vibrate or respond to vibration of the rotor or bowl arising from any dynamic unbalance of the latter. By reason of their vibration damping properties, the separating disks embodying this invention secure the smooth and elfective centrifugal separation of the solids from the liquid constituents in the layers of flows passing between the adjacent separating disks. Due to the fact that the material forming the separating disks in accordance with this invention has a specific gravity which is much closer to the specific gravity of the dispersion or slurry being centrifuged than is the specific gravity of the previously known sheet metal separating disks, the disks embodying this invention do not cause any appreciable or significant dynamic unbalance of the rotor or bowl. Even if there are inaccuracies in the shapes of the separating disks embodying this invention or in their concentricity with respect to the axis of rotation, such inaccuracies are substantially compensated by the filling of the spaces between adjacent separating disks with the dispersion flowing therethrough and having a specific gravity which is, at the worst, only one-half of the specific gravity of the material forming the disks.
Since separating disks embodying this invention can 3 be conveniently molded by injection molding or other conventional molding procedures, the same can be very economically produced, particularly when one considers that the spacing projections are simultaneously formed thereon, rather than being separately attached, as in the case of the previously existing sheet metal separating disks, It will also be apparent that injection molded separating disks embodying this invention can be formed with a perfectly accurate shape and with smooth surfaces so as to promote the effective centrifugal separation of the liquid and solid constituents of a dispersion.
Although the materials proposed for forming of the separating disks in accordance with this invention have a strength which is relatively low when compared with that of the sheet metal previously used for separating disks, such relatively low strength is not disadvantageous by reason of low specific gravity of the proposed materials which makes it possible for the stress resulting from the centrifugal force to be compensated, at least to a considerable extent, by the centripetal, or radially inwardly directed force or hydrostatic lift acting on the separating disks as a result of the radially inwardly directed flow between adjacent disks. The separating disks formed from the proposed synthetic materials in accordance with this invention have a further advantage in the resistance to abrasion of such materials by the dispersion flowing between the separating disks.
Although an illustrative embodiment of this invention has been described in detail herein with reference to the accompanying drawing, it is to be understood that the invention is not limited to that precise embodiment, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention, except as defined in the appended claims.
What is claimed is:
1. A separating disk for a centrifuge, said disk being of a material having a specific gravity of less than approximately 2.() and a modulus of elasticity in tension of less than approximately 1000 kg./mm.
2. A molded separating disk for a centrifuge, said disk being of generally frusto-conical configuration and having integral spacing projections extending from at least one surface thereof, said disk being of a synthetic material having a specific gravity of less than approximately 2.0 and a modulus of elasticity in tension of less than approximately 1000 kg./mm.
References Cited UNITED STATES PATENTS 989,099 4/1911 Wright 233- 1,168,452 1/ 1916 Anderson 233-29 3,235,174- 2/1966 Downey 233-l9 M. CARY NELSON, Primary Examiner.
H. KLINKSIEK, Assistant Examiner.
Claims (1)
1. A SEPARATING DISK FOR A CENTRIGUGE, SAID DISK BEING OF A MATERIAL HAVING A SPECIFIC GRAVITY OF LESS THAN APPROXIMATELY 2.0 AND A MODULUS OF ELASTICITY IN TENSION OF LESS THAN APPROXIMATELY 1000 KG./MM.2.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CS215564 | 1964-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3335946A true US3335946A (en) | 1967-08-15 |
Family
ID=5357853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US447209A Expired - Lifetime US3335946A (en) | 1964-04-14 | 1965-04-12 | Separating disks for centrifuges |
Country Status (3)
Country | Link |
---|---|
US (1) | US3335946A (en) |
GB (1) | GB1098007A (en) |
SE (1) | SE316422B (en) |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4036429A (en) * | 1975-03-18 | 1977-07-19 | Ivin Jury F | Bowl of centrifugal separator |
WO1990004460A1 (en) * | 1988-10-17 | 1990-05-03 | Alfa-Laval Separation Ab | Centrifugal separator |
US5045049A (en) * | 1988-10-17 | 1991-09-03 | Alfa-Laval Separation Ab | Centrifugal separator |
WO1996027445A1 (en) * | 1995-03-06 | 1996-09-12 | Tetra Laval Holdings & Finance S.A. | Stack of separation discs for centrifugal separator |
US6210311B1 (en) * | 1998-09-25 | 2001-04-03 | Analytical Engineering, Inc. | Turbine driven centrifugal filter |
US6261455B1 (en) | 1998-10-21 | 2001-07-17 | Baldwin Filters, Inc. | Centrifuge cartridge for removing soot from oil in vehicle engine applications |
US6428700B1 (en) | 2000-09-06 | 2002-08-06 | Baldwin Filters, Inc. | Disposable centrifuge cartridge backed up by reusable cartridge casing in a centrifugal filter for removing soot from engine oil |
WO2002097422A1 (en) * | 2001-05-31 | 2002-12-05 | Electron-Bio, Inc. | A micro valve apparatus using micro bead and method for controlling the same |
US6517475B1 (en) | 1998-09-25 | 2003-02-11 | Baldwin Filters, Inc. | Centrifugal filter for removing soot from engine oil |
US6520902B1 (en) | 1998-10-21 | 2003-02-18 | Baldwin Filters, Inc. | Centrifuge cartridge for removing soot from engine oil |
US6579218B1 (en) | 1998-09-25 | 2003-06-17 | Analytical Engineering, Inc. | Centrifugal filter utilizing a partial vacuum condition to effect reduced air drag on the centrifuge rotor |
US20060100083A1 (en) * | 2002-09-02 | 2006-05-11 | Torgny Lagerstedt | Disc stacking arrangement |
US20060135339A1 (en) * | 2002-06-19 | 2006-06-22 | Martin Sandgren | Rotation body arrangement |
WO2007114766A1 (en) * | 2006-04-04 | 2007-10-11 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator |
US20110136649A1 (en) * | 2008-04-08 | 2011-06-09 | Alfa Laval Corporate Ab | Separation disc and separator |
US20110195832A1 (en) * | 2008-09-30 | 2011-08-11 | Alfa Laval Corporate Ab | Separation disk for a centrifuge rotor, and a disk package |
US20110237417A1 (en) * | 2008-09-30 | 2011-09-29 | Alfa Laval Corporate Ab | Disk package for a centrifuge rotor |
EP2400039A2 (en) | 2005-04-30 | 2011-12-28 | Jae-Chern Yoo | Bio-Disc, Bio-Driver Apparatus, And Assay Method Using the Same |
DE102013101654A1 (en) | 2013-02-20 | 2014-08-21 | Gea Mechanical Equipment Gmbh | Separator disc package |
US20150126353A1 (en) * | 2012-05-14 | 2015-05-07 | Alfa Laval Corporate Ab | Disc package for a centrifugal separator |
EP2326428B1 (en) | 2008-07-16 | 2016-11-16 | Alfa Laval Corporate AB | Centrifugal separator |
US9861920B1 (en) | 2015-05-01 | 2018-01-09 | Imagine Tf, Llc | Three dimensional nanometer filters and methods of use |
US20180141057A1 (en) * | 2015-04-24 | 2018-05-24 | Alfa Laval Corporate Ab | Centrifugal separator with disc stack |
US10040018B2 (en) | 2013-01-09 | 2018-08-07 | Imagine Tf, Llc | Fluid filters and methods of use |
US10118184B2 (en) * | 2012-04-23 | 2018-11-06 | 3Nine Ab | Centrifugal separator conical rotor disc elements having radial projections, and rotors having disc elements |
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US10124275B2 (en) | 2014-09-05 | 2018-11-13 | Imagine Tf, Llc | Microstructure separation filters |
US10307758B2 (en) | 2012-12-05 | 2019-06-04 | Research & Business Foundation Sungkyunkwan University | Thin film valve apparatus using a fluid hole closing membrane |
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US20190247865A1 (en) * | 2016-10-31 | 2019-08-15 | Alfa Laval Corporate Ab | Separation disc for a centrifugal separator |
US10479046B2 (en) | 2015-08-19 | 2019-11-19 | Imagine Tf, Llc | Absorbent microstructure arrays and methods of use |
US10730047B2 (en) | 2014-06-24 | 2020-08-04 | Imagine Tf, Llc | Micro-channel fluid filters and methods of use |
US10758849B2 (en) | 2015-02-18 | 2020-09-01 | Imagine Tf, Llc | Three dimensional filter devices and apparatuses |
US20210046490A1 (en) * | 2018-03-12 | 2021-02-18 | Hengst Se | Rotor for a centrifugal separator and centrifugal separator |
US10960411B2 (en) | 2011-08-10 | 2021-03-30 | Alfa Laval Corporate Ab | Separation disc for a centrifugal separator and a method for manufacturing the separation disc |
US11123753B2 (en) * | 2016-10-31 | 2021-09-21 | Alfa Laval Corporate Ab | Centrifugal separator with disc having regions of different densities of spacing members |
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US989099A (en) * | 1908-06-23 | 1911-04-11 | Laval Separator Co De | Centrifugal liquid-separator. |
US1168452A (en) * | 1914-09-28 | 1916-01-18 | Champion Blower & Forge Co | Centrifugal cream-separator. |
US3235174A (en) * | 1961-01-24 | 1966-02-15 | Aero Flow Dynamics Inc | Centrifugal liquid purifier |
-
1965
- 1965-03-26 SE SE3976/65A patent/SE316422B/xx unknown
- 1965-04-09 GB GB15210/65A patent/GB1098007A/en not_active Expired
- 1965-04-12 US US447209A patent/US3335946A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US989099A (en) * | 1908-06-23 | 1911-04-11 | Laval Separator Co De | Centrifugal liquid-separator. |
US1168452A (en) * | 1914-09-28 | 1916-01-18 | Champion Blower & Forge Co | Centrifugal cream-separator. |
US3235174A (en) * | 1961-01-24 | 1966-02-15 | Aero Flow Dynamics Inc | Centrifugal liquid purifier |
Cited By (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4036429A (en) * | 1975-03-18 | 1977-07-19 | Ivin Jury F | Bowl of centrifugal separator |
WO1990004460A1 (en) * | 1988-10-17 | 1990-05-03 | Alfa-Laval Separation Ab | Centrifugal separator |
US5045049A (en) * | 1988-10-17 | 1991-09-03 | Alfa-Laval Separation Ab | Centrifugal separator |
US5052996A (en) * | 1988-10-17 | 1991-10-01 | Alfa-Laval Separation Ab | Centrifugal separator |
WO1996027445A1 (en) * | 1995-03-06 | 1996-09-12 | Tetra Laval Holdings & Finance S.A. | Stack of separation discs for centrifugal separator |
US6517475B1 (en) | 1998-09-25 | 2003-02-11 | Baldwin Filters, Inc. | Centrifugal filter for removing soot from engine oil |
US6210311B1 (en) * | 1998-09-25 | 2001-04-03 | Analytical Engineering, Inc. | Turbine driven centrifugal filter |
US6579218B1 (en) | 1998-09-25 | 2003-06-17 | Analytical Engineering, Inc. | Centrifugal filter utilizing a partial vacuum condition to effect reduced air drag on the centrifuge rotor |
US6261455B1 (en) | 1998-10-21 | 2001-07-17 | Baldwin Filters, Inc. | Centrifuge cartridge for removing soot from oil in vehicle engine applications |
US6296765B1 (en) | 1998-10-21 | 2001-10-02 | Baldwin Filters, Inc. | Centrifuge housing for receiving centrifuge cartridge and method for removing soot from engine oil |
US6520902B1 (en) | 1998-10-21 | 2003-02-18 | Baldwin Filters, Inc. | Centrifuge cartridge for removing soot from engine oil |
US6428700B1 (en) | 2000-09-06 | 2002-08-06 | Baldwin Filters, Inc. | Disposable centrifuge cartridge backed up by reusable cartridge casing in a centrifugal filter for removing soot from engine oil |
US7635585B2 (en) | 2001-05-31 | 2009-12-22 | Jae Chern Yoo | Micro valve apparatus using micro bead and method for controlling the same |
US20040155213A1 (en) * | 2001-05-31 | 2004-08-12 | Yoo Jae Chern | Micro valve apparatus using micro bead and method for controlling the same |
WO2002097422A1 (en) * | 2001-05-31 | 2002-12-05 | Electron-Bio, Inc. | A micro valve apparatus using micro bead and method for controlling the same |
US20100055771A1 (en) * | 2001-05-31 | 2010-03-04 | Jae Chern Yoo | Micro valve apparatus using micro bead and method for controlling the same |
US8241891B2 (en) | 2001-05-31 | 2012-08-14 | Samsung Electronics Co., Ltd. | Micro valve apparatus using micro bead and method for controlling the same |
US20060135339A1 (en) * | 2002-06-19 | 2006-06-22 | Martin Sandgren | Rotation body arrangement |
US20060100083A1 (en) * | 2002-09-02 | 2006-05-11 | Torgny Lagerstedt | Disc stacking arrangement |
EP2400039A2 (en) | 2005-04-30 | 2011-12-28 | Jae-Chern Yoo | Bio-Disc, Bio-Driver Apparatus, And Assay Method Using the Same |
WO2007114766A1 (en) * | 2006-04-04 | 2007-10-11 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator |
US20090137378A1 (en) * | 2006-04-04 | 2009-05-28 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator |
US9550192B2 (en) | 2006-04-04 | 2017-01-24 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator having undetachably joined separating discs |
US8308626B2 (en) * | 2006-04-04 | 2012-11-13 | Alfa Laval Corporate Ab | Rotor unit for a centrifugal separator having undetachably joined separating discs |
US20110136649A1 (en) * | 2008-04-08 | 2011-06-09 | Alfa Laval Corporate Ab | Separation disc and separator |
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Also Published As
Publication number | Publication date |
---|---|
SE316422B (en) | 1969-10-20 |
GB1098007A (en) | 1968-01-03 |
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