US3924804A - Centrifuge for the separation of mixtures of liquids - Google Patents

Centrifuge for the separation of mixtures of liquids Download PDF

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Publication number
US3924804A
US3924804A US422467A US42246773A US3924804A US 3924804 A US3924804 A US 3924804A US 422467 A US422467 A US 422467A US 42246773 A US42246773 A US 42246773A US 3924804 A US3924804 A US 3924804A
Authority
US
United States
Prior art keywords
drum
milk
distributor
specifically
ribs
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
US422467A
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English (en)
Inventor
Heinrich Niemeyer
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.)
WESFALIA SEPARATOR AG
Original Assignee
WESFALIA SEPARATOR AG
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
Priority claimed from DE19722260617 external-priority patent/DE2260617C3/de
Application filed by WESFALIA SEPARATOR AG filed Critical WESFALIA SEPARATOR AG
Publication of USB422467I5 publication Critical patent/USB422467I5/en
Application granted granted Critical
Publication of US3924804A publication Critical patent/US3924804A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B04B1/14—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 periodical discharge

Definitions

  • ABSTRACT A centrifugal separator having a hermetically sealed inlet, a hermetically sealed outlet for the specifically lighter component, and a paring disc for the discharge of specifically heavier component.
  • the feed passes downwardly into the drum through a hermetically sealed inlet tube, then downwardly to the bottom of the drum through passageways in the distributor.
  • the passageways are in circumferentially spaced ribs.
  • lighter liquid moves inwardly and between the ribs to along the axis of the separator and upwardly into and through a hermetically sealed outlet tube disposed within said inlet pipe.
  • the separator is well suited for centrifuging refrigerated milk.
  • the invention relates to a centrifuge for the separa tion of mixtures of liquids, with a hermetically sealed inlet leading downward into the drum for the liquid mixture to be separated, and a hermetically sealed outlet leading upwardly out of the drum for the specifically lighter component.
  • German Pat. No. 1,094,193 discloses a fully hermetic centrifuge in which both the inlet for the liquid mixture and the two outlets for the separated components are sealed against the rotating drum.
  • the inlet leads downwardly into the drum and the outlets lead upwardly out of the drum.
  • the inlet pipe is centrally disposed and surrounded by the two outlets.
  • US. Pat. No. 2,223,999 discloses a semihermetic design.
  • the liquid mixture is fed to the drum from below through the hollow spindle.
  • the specifically lighter component is discharged upwardly through a hermetically sealed central discharge pipe, while the specifically heavier component is spun into a catching vessel through a regulating disk at the neck of the drum.
  • Hermetically sealed inlet and outlet lines have the advantage first of all that the material being centrifuged does not come in contact with the atmosphere, so that oxidation of the liquid being centrifuged is prevented.
  • a hermetically sealed inlet additionally has the advantage that the liquid being treated passes smoothly out of the stationary inlet line into the rotating drum, because the inlet chamber is always filled with liquid. This prevents the shattering of dispersed particles which occurs in a centrifuge having an open inlet. In centrifuges of the latter kind the entering liquid mixture collides in the non-liquid filled inlet chamber with the rapidly rotating distributor ribs which bring it to the angular velocity of the drum. The more finely divided the particles are, the poorer is the separating effect of the drum.
  • a hermetically sealed outlet assures a gentle transfer of the liquid or of one of the components of the liquid from the rotating drum to the stationary discharge line.
  • the liquid In a free discharge the liquid is hurled with great violence into the catching trough surrounding the drum; in the case of discharge by means of a paring disk it is subjected to a strongly homogenizing action as a result of being pared off in a thin stratum, and of the intense turbulence in the narrow paring channels.
  • a centrifugal separating drum from which each liquid component is pumped by means of a paring disk into a discharge line in which a throttling member is in stalled is likewise known, for example from German Pat. No. 716,610.
  • the last-named type of construction is mostly used for removing the cream from raw milk which, in the usual manner of procedure, is preheated in a heater to the skimming temperature of about 40C.
  • the fresh raw milk is chilled to 4C by the dairy farmer because often it is not delivered to the dairy until much later. There is a desire on the part of the dairies, therefore, -to separate the milk at this temperature.
  • the cold skim milk can then be used directly for the standardization of the raw milk to a desired fat content. This not only saves power but also simplifies dairy operations. Furthermore, the cold cream in its natural structure is especially suitable for the preparation of whipped cream.
  • a centrifugal separator in which the liquid to be separated is delivered through the hollow spindle suitable for cold milk separation, because the cold spindle passing through the oil bath. promotes the formation of condensate in the oil bath, thereby causing transmission damage.
  • the invention is addressed to the problem of creating a centrifuge which is suitable especially for the separation of cold milk. It may not have an adverse effect upon the raw milk and the cream, it must permit regulation of the butterfat content during operation, and it must not produce any condensate in the oil bath.
  • the centrifuge of the invention is characterized in that the inlet tube for the liquid mixture is in a flowconnecting communication with passages which are disposed at equal distances from the axis of rotation in the ribs of the distributor and empty into the inlet chamber of the drum, that the discharge tube for the specifically lighter component runs outward from the center of the distributor and passes axially through the inlet tube, and that for the removal of the specifically heavier component a paring disk is provided and a throttle member is installed in the outer discharge conduit.
  • the raw and skim milks are treated gently, while by means of the throttle member in the skim milk discharge conduit the depth of immersion of the paring disk is varied and thus the zone of separation between cream and skim milk can be shifted. This makes it possible continuously to vary the butterfat content during operation.
  • the invention provides a centrifugal separator for separating a liquid raw material into a specifically lighter component and a specifically heavier component.
  • the separator comprises a rotatably mounted separator drum which provides a separating chamber for the separation, and has a distributor coaxially mounted within the separating chamber for rotation with the drum.
  • the distributor receives material to be separated at an upper level and conveys it downwardly adjacent the drum axis, and directs it radially outwardly along the bottom of the drum into the separating chamber.
  • the distributor comprises a plurality of axially extending ribs, disposed adjacent and radially outwardly of the axis of the drum in circumferentially spaced relation.
  • the ribs have passages therein for conveying of the raw material to the lower part of the drum.
  • the spaces between the ribs provide free communication between the separating chamber and an axially extending center portion of the drum, for passage of specifically lighter component to said center portion of the drum.
  • An inlet tube is mounted on the distributor for rotation therewith for conveying raw material downwardly into the drum to said passages of the ribs.
  • a stationary inlet connector is provided for delivering of raw material to the upper end of the inlet tube.
  • a hermetic seal is provided between the inlet tube and the stationary inlet connector.
  • An outlet tube for specifically lighter component is mounted on the distributor for rotation therewith, for conveying specifically lighter component upwardly from the said center portion of the drum. The outlet tube is disposed coaxially within the said inlet tube.
  • a stationary outlet connector is provided for receiving specifically lighter component from the outlet tube, and there is a hermetic seal between the outlet tube and the stationary outlet connector.
  • a paring chamber and a paring disc are provided for removal of specifically heavier component.
  • Means are provided communicating the paring chamber with the outer portion of the drum for receiving specifically heavier component therefrom, and a discharge line communicates with the paring disc.
  • a throttle is mounted on said discharge line.
  • FIG. 1 is a cross-section of the upright drum with a portion of the drum adjacent the axis shown along line 11 in FIG. 2, and
  • FIG. 2 is a cross-section taken along line 22 of FIG. 1.
  • the stationary inlet tube 1 is hermetically joined by means of a sleeve seal 2 to the inlet tube 3 which rotates with the drum.
  • the annular passage 4 is in a flowconnecting communication with passages 5 which are arranged in the ribs 6 of the distributor 7 in an array such that imbalance is not imparted to the machine, e.g., at equal distances from the axis of rotation.
  • the passage 5 empties into the inlet chamber 8 of the drum.
  • the ribs 6 extend between upper hub 21 and lower hub 22 of the distributor.
  • the specifically lighter component flowing inwardly between separator plates 20 from the separating chamber 9 passes between the ribs 6 into the central portion 10 (FIG.
  • connection means 19 serves for the connection of a water line so that, when the contrifuge is started up, and before the raw material infeed is opened, a small amount of water may be delivered for the cooling and lubrication of the sleeve seals.
  • the drum itself may be of any desired type of construction, e.g., even of the self-cleaning type of construction, such as is indicated in the drawing.
  • the drum is outfitted with solids dicharge passageways 23, and a piston valve 24.
  • the separator is well suited for centrifuging of refrigerated milk.
  • the resulting skim milk can be added to unpasteurized whole milk for standardization, and the resulting milk can be pasteurized.
  • a centrifugal separator for separating a liquid raw material into a specifically lighter component and a specifically heavier component comprising:
  • a rotatably mounted separator drum providing a separating chamber for the separation and having a distributor coaxially mounted therein for rotation with the drum for receiving material to be separated in the upper part of the drum and conveying it downwardly adjacent the drum axis and directly it radially outwardly adjacent the bottom of the drum,
  • the distributor comprising a plurality of axially extending ribs disposed adjacent and radially outwardly of the axis of the drum in circumferentially spaced relation, the ribs having passages therein for conveying of raw material to the lower part of the drum, the spaces between the ribs providing free communication between the separating chamber and an axially extending center portion of the drum for passage of specifically lighter component to said center portion of the drum,
  • an inlet tube mounted on the distributor for rotation therewith for conveying raw material downwardly into the drum to said passages of the ribs, and a stationary inlet connector for delivering of raw material to the upper end of the inlet tube, and a hermetic seal between the inlet tube and stationary inlet connector,
  • a paring chamber and paring disc for removal of specifically heavier component means communicatin g the paring chamber with the outer portion of the drum for receiving specifically heavier component therefrom, a discharge line communicating with the paring disc and a throttle in said discharge line.

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  • Centrifugal Separators (AREA)
US422467A 1972-12-12 1973-12-06 Centrifuge for the separation of mixtures of liquids Expired - Lifetime US3924804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722260617 DE2260617C3 (de) 1972-12-12 Vollmantelzentrifuge mit vertikaler Drehachse zum Trennen von Milch

Publications (2)

Publication Number Publication Date
USB422467I5 USB422467I5 (US20110009641A1-20110113-C00256.png) 1975-01-28
US3924804A true US3924804A (en) 1975-12-09

Family

ID=5864110

Family Applications (1)

Application Number Title Priority Date Filing Date
US422467A Expired - Lifetime US3924804A (en) 1972-12-12 1973-12-06 Centrifuge for the separation of mixtures of liquids

Country Status (5)

Country Link
US (1) US3924804A (US20110009641A1-20110113-C00256.png)
AT (1) AT340194B (US20110009641A1-20110113-C00256.png)
CH (1) CH574275A5 (US20110009641A1-20110113-C00256.png)
FR (1) FR2209612B1 (US20110009641A1-20110113-C00256.png)
NL (1) NL151273B (US20110009641A1-20110113-C00256.png)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614598A (en) * 1980-05-23 1986-09-30 Westfalia Separator Ag Centrifugal separator drum for the clarification and separation of liquids
US20040187711A1 (en) * 2001-07-18 2004-09-30 Karl-Heinz Zettier Method for monitoring control and/or regulation of a centrifuge
US20070082802A1 (en) * 2003-12-23 2007-04-12 Siegfried Klapper Method and device for preventing blockages in the flow paths of a separator
US20080017595A1 (en) * 2004-07-21 2008-01-24 Karl-Heinz Zettier Separator And Method For Disinfecting Raw Milk Or Whey
US20130157833A1 (en) * 2010-07-02 2013-06-20 Alfa Laval Corporate Ab Cleaning apparatus for gas scrubber fluid
WO2015117007A1 (en) * 2014-01-31 2015-08-06 Dsm Ip Assets B.V. Adipose tissue centrifuge and method of use
US9266055B2 (en) 2010-02-25 2016-02-23 Alfa Laval Corporate Ab Exhaust gas and gas scrubber fluid cleaning equipment and method
US9358554B2 (en) 2009-11-06 2016-06-07 Alfa Laval Corporate Ab Hermetic centrifugal separator with an outlet pumping configuration
EP2403650B1 (en) 2009-03-06 2016-12-21 Alfa Laval Corporate AB Centrifugal separator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350282A (en) * 1980-12-23 1982-09-21 Donaldson Company, Inc. Self-purging centrifuge
DD287147A7 (de) * 1988-11-28 1991-02-21 Maschinenfabrik Kyffhaeuserhuette Artern Gmbh,De Trommel fuer einen zentrifugalseparator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70778C (US20110009641A1-20110113-C00256.png) *
GB226456A (en) * 1924-08-16 1924-12-24 Eric Vilhelm Larson Improvements in separator bowls
US1950868A (en) * 1931-06-25 1934-03-13 Laval Separator Co De Centrifugal bowl
US3047214A (en) * 1958-04-23 1962-07-31 Sharples Corp Centrifugal process and apparatus
US3765601A (en) * 1970-03-10 1973-10-16 Mse Holdings Ltd Centrifuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE181855C (US20110009641A1-20110113-C00256.png) *
GB191021820A (en) * 1910-09-20 1910-12-15 Erik August Forsberg Improvements in Centrifugal Liquid Separators.
CH335247A (de) * 1955-10-13 1958-12-31 Cham Ag Maschf Schälschleuder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70778C (US20110009641A1-20110113-C00256.png) *
GB226456A (en) * 1924-08-16 1924-12-24 Eric Vilhelm Larson Improvements in separator bowls
US1950868A (en) * 1931-06-25 1934-03-13 Laval Separator Co De Centrifugal bowl
US3047214A (en) * 1958-04-23 1962-07-31 Sharples Corp Centrifugal process and apparatus
US3765601A (en) * 1970-03-10 1973-10-16 Mse Holdings Ltd Centrifuge

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4614598A (en) * 1980-05-23 1986-09-30 Westfalia Separator Ag Centrifugal separator drum for the clarification and separation of liquids
US20040187711A1 (en) * 2001-07-18 2004-09-30 Karl-Heinz Zettier Method for monitoring control and/or regulation of a centrifuge
US7217234B2 (en) * 2001-07-18 2007-05-15 Westfalia Separator Agb System and a method for controlling a centrifuge for the production of a skimmed milk product
US20070082802A1 (en) * 2003-12-23 2007-04-12 Siegfried Klapper Method and device for preventing blockages in the flow paths of a separator
US7837608B2 (en) * 2003-12-23 2010-11-23 Westfalia Separator Ag Method and device for preventing blockages in the flow paths of a separator
US20080017595A1 (en) * 2004-07-21 2008-01-24 Karl-Heinz Zettier Separator And Method For Disinfecting Raw Milk Or Whey
US7758488B2 (en) * 2004-07-21 2010-07-20 West falia Separator AG Method of operating a separator by recirculating an entraining liquid
US10357787B2 (en) 2009-03-06 2019-07-23 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices
EP2403650B1 (en) 2009-03-06 2016-12-21 Alfa Laval Corporate AB Centrifugal separator
US10427171B2 (en) 2009-03-06 2019-10-01 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices
EP2403650B2 (en) † 2009-03-06 2019-11-20 Alfa Laval Corporate AB Centrifugal separator
US11396026B2 (en) 2009-03-06 2022-07-26 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices
US9358554B2 (en) 2009-11-06 2016-06-07 Alfa Laval Corporate Ab Hermetic centrifugal separator with an outlet pumping configuration
US9266055B2 (en) 2010-02-25 2016-02-23 Alfa Laval Corporate Ab Exhaust gas and gas scrubber fluid cleaning equipment and method
US20130157833A1 (en) * 2010-07-02 2013-06-20 Alfa Laval Corporate Ab Cleaning apparatus for gas scrubber fluid
WO2015117007A1 (en) * 2014-01-31 2015-08-06 Dsm Ip Assets B.V. Adipose tissue centrifuge and method of use
US10711239B2 (en) 2014-01-31 2020-07-14 Dsm Ip Assets B.V. Adipose tissue centrifuge and method of use
US11549094B2 (en) 2014-01-31 2023-01-10 Dsm Ip Assets B.V. Adipose tissue centrifuge and method of use
US12018244B2 (en) 2014-01-31 2024-06-25 Dsm Ip Assets B.V. Adipose tissue centrifuge and method of use

Also Published As

Publication number Publication date
FR2209612A1 (US20110009641A1-20110113-C00256.png) 1974-07-05
DE2260617B2 (de) 1976-05-26
CH574275A5 (US20110009641A1-20110113-C00256.png) 1976-04-15
AT340194B (de) 1977-11-25
FR2209612B1 (US20110009641A1-20110113-C00256.png) 1977-05-13
NL151273B (nl) 1976-11-15
NL7310016A (US20110009641A1-20110113-C00256.png) 1974-06-14
ATA602773A (de) 1977-03-15
DE2260617A1 (de) 1974-07-04
USB422467I5 (US20110009641A1-20110113-C00256.png) 1975-01-28

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