US3741467A - Centrifugal separator - Google Patents
Centrifugal separator Download PDFInfo
- Publication number
- US3741467A US3741467A US00057056A US3741467DA US3741467A US 3741467 A US3741467 A US 3741467A US 00057056 A US00057056 A US 00057056A US 3741467D A US3741467D A US 3741467DA US 3741467 A US3741467 A US 3741467A
- Authority
- US
- United States
- Prior art keywords
- poly
- coating
- liquid
- rotor
- discs
- 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
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
-
- 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
- B04B7/00—Elements of centrifuges
- B04B7/08—Rotary bowls
- B04B7/12—Inserts, e.g. armouring plates
-
- 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
- the present invention relates to a centrifugal separator having a source of supply of a liquid to be separated, and it relates more particularly to a novel arrangement for solving the problems incident to deposits in the interior of the centrifugal rotor, especially deposits on the discs which are used for increasing the separation efficiency. Such deposits reduce the throughput rate of the separator if its separation capability is to be maintained unchanged.
- the rotor body and its inner parts are made of stainless steel, and the surfaces of the rotor parts which contact the liquid are polished so as to prevent as much as possible the accumulation of deposits on these surfaces. In spite of this polishing, deposits are formed which must be removed periodically so that the desired separation capability can be maintained.
- the surface contacting the liquid can be made of a coating of fluorinated poIy-alkene on a support such as the inside of the rotor or said discs.
- the invention has'given good results in theseparation of yeast-containing wort, milk used for cheesemaking and also ordinary milk, in which yeast cells and caseine, respectively, have the tendency to form heavy deposits in the interior of the rotor and especially in any disc set which may be provided.
- yeast cells and caseine respectively
- the interspaces between the discs in the disc set are easily clogged in a conventional centrifuge.
- tests have proved that if cheese-making milk is separated in a centrifuge having a disc set in which certain discs are made of stainless steel and other discs are coated with poly-tetrafluoro-ethylene, the latter discs are completely free from deposits after the interruption of the separating operation, although the discs of stainless steel have heavy deposits of caseine.
- centrifuge types in which the present invention can be used to advantage are those disclosed in the Swedish Pat. specifications Nos. 193,813, 219,547 and 310,866.
- FIG. 1 is a vertical sectional view of an example of a centrifuge embodying the invention.
- FIG. 2 is an enlarged fragmentary view, in vertical section, of one of the discs illustrated in FIG. 1 and showing the coating thereon.
- FIG. 1 The centrifuge illustrated in FIG. 1 is disclosed in U. S. Pat. No. 3,468,475 granted Sept. 23, 1969 (said disclosure being incorporated herein by reference); and it will be understood that the aforesaid coating of a polyalkene at least partly fluorinated is applied to a surface within the rotor 1 which comes into contact with the liquid to be separated, this liquid being fed into the rotor through the stationary inlet pipe 5. More particularly, the coating is applied to the surface of any of the parts 12, 13, l5, l6 and 24 or to the internal surface of the rotor body 1 and its cover 2, and it may be applied to all of these surfaces. This coating is too thin to be capable of illustration in FIG. 1; but in FIG. 2 illustrating an enlarged fragmentary view of one of the discs 15 in FIG. 1, the coating is shown at 32 on each surface of the disc. I
- a centrifugal separator the combination of a centrifugal rotor, means for delivering into the rotor a liquid to be separated, a set of conical discs in the rotor for increasing the separating efficiency and which forms surfaces coming into contact with said liquid, and a coating of at least a partly fluorinated polyalkene on said disc surfaces for resisting clogging of the disc set.
Landscapes
- Centrifugal Separators (AREA)
- Dairy Products (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1041469 | 1969-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3741467A true US3741467A (en) | 1973-06-26 |
Family
ID=20292270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00057056A Expired - Lifetime US3741467A (en) | 1969-07-24 | 1970-07-22 | Centrifugal separator |
Country Status (5)
Country | Link |
---|---|
US (1) | US3741467A (de) |
DE (1) | DE2033646A1 (de) |
ES (1) | ES382105A1 (de) |
FR (1) | FR2053121B1 (de) |
GB (1) | GB1245390A (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982002153A1 (en) * | 1980-12-23 | 1982-07-08 | Co Inc Donaldson | Self-purging centrifuge |
US4701158A (en) * | 1985-10-30 | 1987-10-20 | Alfa-Laval Separation Ab | Centrifugal separator |
US6033356A (en) * | 1996-04-02 | 2000-03-07 | Westfalia Separator Ag | Centrifugal drum with increased flow resistance |
US6468198B1 (en) * | 1998-08-04 | 2002-10-22 | Westfalia Separator Ag | Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator |
US20070066476A1 (en) * | 2003-07-10 | 2007-03-22 | Westfalia Separator Ag | Centrifuge comprising a separator disc stack and separator disc |
WO2012150125A3 (de) * | 2011-05-02 | 2012-12-27 | Gea Mechanical Equipment Gmbh | Zentrifuge mit trenntellern |
WO2013079194A2 (en) | 2011-11-28 | 2013-06-06 | Alfa Laval Corporate Ab | Centrifugal separator with anti-fouling properties |
US10888880B2 (en) | 2016-02-22 | 2021-01-12 | Alfa Laval Corporate Ab | Conical disk having a check valve, and a centrifuge rotor, a centrifugal separator, and a method of separation using the conical disk |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695246A (en) * | 1950-09-02 | 1954-11-23 | Et Oakes Corp | Apparatus for foaming rubber and method of coating same |
US2883103A (en) * | 1953-03-09 | 1959-04-21 | Technicon International Ltd | Centrifuge apparatus and method |
US3079069A (en) * | 1958-05-16 | 1963-02-26 | Separator Ab | Self-opening sludge centrifuge |
US3104225A (en) * | 1960-01-29 | 1963-09-17 | Lourdes Instr Corp | Continuous flow centrifuge rotor and liner element |
US3519199A (en) * | 1969-04-03 | 1970-07-07 | Baker Perkins Inc | Solids handling centrifugal extractor |
-
1970
- 1970-07-07 DE DE19702033646 patent/DE2033646A1/de active Pending
- 1970-07-09 GB GB33372/70A patent/GB1245390A/en not_active Expired
- 1970-07-21 FR FR7026836A patent/FR2053121B1/fr not_active Expired
- 1970-07-22 US US00057056A patent/US3741467A/en not_active Expired - Lifetime
- 1970-07-23 ES ES382105A patent/ES382105A1/es not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695246A (en) * | 1950-09-02 | 1954-11-23 | Et Oakes Corp | Apparatus for foaming rubber and method of coating same |
US2883103A (en) * | 1953-03-09 | 1959-04-21 | Technicon International Ltd | Centrifuge apparatus and method |
US3079069A (en) * | 1958-05-16 | 1963-02-26 | Separator Ab | Self-opening sludge centrifuge |
US3104225A (en) * | 1960-01-29 | 1963-09-17 | Lourdes Instr Corp | Continuous flow centrifuge rotor and liner element |
US3519199A (en) * | 1969-04-03 | 1970-07-07 | Baker Perkins Inc | Solids handling centrifugal extractor |
Non-Patent Citations (1)
Title |
---|
Modern Plastics Encyclopedia, 1967, pages 153 156 * |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1982002153A1 (en) * | 1980-12-23 | 1982-07-08 | Co Inc Donaldson | Self-purging centrifuge |
US4350282A (en) * | 1980-12-23 | 1982-09-21 | Donaldson Company, Inc. | Self-purging centrifuge |
US4701158A (en) * | 1985-10-30 | 1987-10-20 | Alfa-Laval Separation Ab | Centrifugal separator |
US6033356A (en) * | 1996-04-02 | 2000-03-07 | Westfalia Separator Ag | Centrifugal drum with increased flow resistance |
US6468198B1 (en) * | 1998-08-04 | 2002-10-22 | Westfalia Separator Ag | Method and device for adjusting the liquid content of a solid withdrawn from a self-discharging centrifugal drum of a separator |
JP2009514657A (ja) * | 2003-07-10 | 2009-04-09 | ウエストファリア セパレーター アーゲー | 分離ディスク・スタックを備える遠心機および分離ディスク |
US20070066476A1 (en) * | 2003-07-10 | 2007-03-22 | Westfalia Separator Ag | Centrifuge comprising a separator disc stack and separator disc |
JP4856540B2 (ja) * | 2003-07-10 | 2012-01-18 | ウエストファリア セパレーター アーゲー | 分離ディスク積層体を備える遠心機および分離ディスク |
EP1644121B2 (de) † | 2003-07-10 | 2015-07-15 | GEA Westfalia Separator GmbH | Trennteller und zentrifuge mit solchen trenntellern |
WO2012150125A3 (de) * | 2011-05-02 | 2012-12-27 | Gea Mechanical Equipment Gmbh | Zentrifuge mit trenntellern |
CN103547374A (zh) * | 2011-05-02 | 2014-01-29 | Gea机械设备有限公司 | 离心机 |
CN103547374B (zh) * | 2011-05-02 | 2015-07-01 | Gea机械设备有限公司 | 离心机 |
WO2013079194A2 (en) | 2011-11-28 | 2013-06-06 | Alfa Laval Corporate Ab | Centrifugal separator with anti-fouling properties |
US10888880B2 (en) | 2016-02-22 | 2021-01-12 | Alfa Laval Corporate Ab | Conical disk having a check valve, and a centrifuge rotor, a centrifugal separator, and a method of separation using the conical disk |
Also Published As
Publication number | Publication date |
---|---|
FR2053121B1 (de) | 1976-03-05 |
FR2053121A1 (de) | 1971-04-16 |
ES382105A1 (es) | 1973-04-01 |
DE2033646A1 (de) | 1971-03-11 |
GB1245390A (en) | 1971-09-08 |
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