[go: up one dir, main page]

US2502945A - Centrifugal separator - Google Patents

Centrifugal separator Download PDF

Info

Publication number
US2502945A
US2502945A US639732A US63973246A US2502945A US 2502945 A US2502945 A US 2502945A US 639732 A US639732 A US 639732A US 63973246 A US63973246 A US 63973246A US 2502945 A US2502945 A US 2502945A
Authority
US
United States
Prior art keywords
bowl
pipe
centrifuge
parer
beer
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
US639732A
Other languages
English (en)
Inventor
Hanno Tore Verner
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.)
Alfa Laval Holdings Amsterdam AB
Original Assignee
Separator AB
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 Separator AB filed Critical Separator AB
Priority to US110862A priority Critical patent/US2631777A/en
Application granted granted Critical
Publication of US2502945A publication Critical patent/US2502945A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12H—PASTEURISATION, STERILISATION, PRESERVATION, PURIFICATION, CLARIFICATION OR AGEING OF ALCOHOLIC BEVERAGES; METHODS FOR ALTERING THE ALCOHOL CONTENT OF FERMENTED SOLUTIONS OR ALCOHOLIC BEVERAGES
    • C12H1/00—Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages
    • C12H1/02—Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages combined with removal of precipitate or added materials, e.g. adsorption material
    • C12H1/06—Precipitation by physical means, e.g. by irradiation, vibrations
    • C12H1/061—Separation by centrifugation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B15/00—Other accessories for centrifuges
    • B04B15/06—Other accessories for centrifuges for cleaning bowls, filters, sieves, inserts, or the like

Definitions

  • centrifugal separators For the removal of yeast cells, remaining after the fermentation, from beer, centrifugal separators are now employed.
  • the yeast cells which are heavier than the beer, deposit under the influence'of the centrifugal force in the sludge space of the centrifugal bowl. and are maintained there till the centrifuge has been stopped.
  • beer freed from yeast cells is discharged through the outlet of the centrifuge.
  • hermetically closed centrifuges but so-called paring disc centrifuges could also be used.
  • the centrifuge After the centrifuge is stopped it is usually flushed clean by connecting its inlet to a water supply pipe and feeding water through it. At the same time an outlet, provided in the pipe line between the outlet of the centrifuge and the storage tank to which the beer liberated from yeast is conducted from the centrifuge, is opened. Because the centrifugal bowl is not then rotating this known method involves the risk that such yeast cells, which have deposited in the sludge s-paceof the bowl and are carriedaway with the flush water flow, may enter and remain in the discharge pipe line. When the centrifuge is next time used for treating beer these yeast cells may be carried into the storing tank for beer. As yeast cells must not be present in the finished beer the described procedure is open to serious objections.
  • the present invention it is insured that no yeast cells shall enter the storage tank.
  • This is eifected'by-flowing the flush liquid backwards through the centrifuge.
  • This is effected by connecting to the discharge pipe of the centrifuge an inlet for flush liquid, e. g. a common water supply pipe, and vbyproviding an outlet for flush liquid at the feed inlet of the centrifuge.
  • the direction of flow being during 2 the whole period of flushing from the outlet to the inlet of the centrifuge, no yeast cells torn off in the bowl can be conveyed into the connecting pipe between the centrifuge and the storage tank.
  • Fig. l is a diagrammatic view of a centrifugal separator installation adapted for carrying out my improved process.
  • Fig. 2 is a vertical sectional view through the upper part of a separator equipped with-a paring disc and in which my improved process is adapted to be practiced, the separator being the same as the separator forming part of the installation shown in Fig. 1.
  • Fig.3 is a view similar to Fig. 1 but showing an installation having a separator of the aforementioned hermetically closed type, in place of a separator equipped with paring discs.
  • Beer, containing yeast cells is, by means of a centrifugal pump 2, carried from a tank I throughacentrifuge 3 to a storing tank or a socalled pressure tank 4 for beer freed from yeast cells.
  • a centrifugal pump 2 carried from a tank I throughacentrifuge 3 to a storing tank or a socalled pressure tank 4 for beer freed from yeast cells.
  • To the feed pipe 50. between the pump and the centrifuge is connected an outlet pipe 6. which is shut off during the separating operation; and to the connecting pipe 1 between the centrifuge 3 and the pressure tank 4 is connected an inlet pipe 8 for flush liquid, which is shut off during the separating operation.
  • the pipe 8 is connected to a container for flush liquid (not shown) or to a water supply pipe.
  • valves 9 and ID are closed and valves H and [2 are opened and water is led through the centrifuge backwards, e. g., in the direction of the arrows, until the centrifuge attains its full speed. Then the valve [2 is closed and the valve 9 opened and the flow of beer begun. After the water has been driven out by the beer at the valve II, this valve is closed, after the valve ID has been opened. Thus there is no risk of entry of yeast cells into the pipe I and, in the subsequent flow of yeast-free beer, of carrying any yeast into the tank 4.
  • the bowl inlet or feed pipe 26 is connected at the top in any suitable manner to the feed pipe shown in Fig. l, and the discharge conduit is connected to the pipe 1 in Fig. l.
  • the parer 29 is normally in the position shown in Fig. 2, wherein the parer and the bowl outlet 33 are in ,communication with the atmosphere through the open space surrounding the neck of the parer. In this position of the parer, it affords communication between the interior of the centrifugal bowl shown in Fig. 2 and the discharge conduit 25 for the purified liquid, the communication to the bowl interior being to both the central zone (through the space 34 below the parer and surrounding the feed pipe 26) and the peripheral zone (through the passage 35 below the parer).
  • the ring 21 and its packing ring constitute a means operable to close communication between parer 29 and the atmosphere, by downward movement of parts 21, 30 to their dotted line positions (Fig. 2).
  • the parts 27; 3 together with the parer form means for sealing the bowl outlet 33 (into which the parer extends) from atmosphere while providing a sealed flushing connection between discharge conduit 25 and. the bowl outlet 33.
  • This sealed flushing connection is from the annular space 36 within the stationary tubular portionx32' through the sealing ring 28 and thence through 4 the parer passages 29a, and it is provided independently of the space 34 between the feed pipe 26 and the surrounding bowl portion.
  • the lower packing ring 24 on the parer constitutes an element operable by the closing means 21 to close communication between the parer and the central zone of the bowl through space 34. That is, the lower ring 24 forms a means for sealing the space 34 between feed pipe 26 and the surrounding bowl portion, such means being movable between sealing (dotted line) and non-sealing (full line) positions for flushing and normal operation, respectively.
  • the flush liquid fed through pipes 8 and 'l' and conduit 25 can pass only through parer 29, passage 35, and the peripheral zone of the bowl, and out through the feed tube 26 and pipe 5 to the discharge duct 6 for the flush liquid.
  • the element 22 constitutes a means operable selectively to move the sealing means, including the parts 21, 3D and the parer, between the lower or sealing position and the upper or non-sealing position, depending upon whether the bowl interior or locus of centrifugal force is to be flushed or is to be used normally for separating impurities from the liquid.
  • the described method of cleaning centrifugal bowls is not limited for use in the centrifugal treatment of beer, but is equally applicable to the cleaning of centrifugal bowls when, in the centrifugal purification of any liquid, solids and semi-solids are deposited in the bowl and at intervals require removal by flushing.
  • a centrifuge comprising a centrifugal bowl having walls defining an outlet in communication with the atmosphere, a feed pipe for conducting a liquid into the bowl. there being a clearance space between the feed pipe and the surrounding bowl portion. and means for sealing said space and movable between sealing and nonsealing positions for flushing the bowl and for normal operation of the centrifuge. respectively, the combination of a conduit outside the bowl for communicating with said outlet independently of said clearance space and adapted to receive a bowl flushing liquid, means for sealing said outlet from the atmosphere while providing a sealed flushin connection between the conduit and said outlet inde endently of said space, and means operable selectively to move said last sealing means between sealing and non-sealing positions.
  • said last sealin means includes a parer extending into said outlet and normally communicating with the conduit, the parer forming part of said flushing connection in the sealing position of said last sealing means.
  • An insta lation for practicing the herein described process which comprises a supply tank, a centrifuge having a centrifugal bowl, an inlet to the bowl, a discharge conduit from the bowl, and a parer normally in communication with the atmosphere and affording communication between the'bowl interior and the discharge cond'uit, a supply conduit connecting the supply tank and said centrifuge inlet, a storage tank connected to the discharge conduit, a device in the discharge conduit for closing the same, a duct for admitting a'flushing liquid to the discharge conduit at a region between the bowl and said device ⁇ a device in the supply conduit for closing the same, a duct for discharging flush liquid through and out of the supply conduit at a region between the bowl and said last device, and means operable to close communication between the parer and the atmosphere, to direct the flow of flushing liquid from the discharge conduit only through the bowl and thence to the supply con duit and to said dischar e duct.
  • parer is normally in open communica tion with both the central and the peripheral zones of the bowl, and an element operable by said means to close communication between the parer and the central Zone of the bowl.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Toxicology (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Centrifugal Separators (AREA)
US639732A 1945-01-22 1946-01-08 Centrifugal separator Expired - Lifetime US2502945A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US110862A US2631777A (en) 1946-01-08 1949-08-17 Process for centrifugal separation of yeast cells from beer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE257491X 1945-01-22

Publications (1)

Publication Number Publication Date
US2502945A true US2502945A (en) 1950-04-04

Family

ID=20306345

Family Applications (1)

Application Number Title Priority Date Filing Date
US639732A Expired - Lifetime US2502945A (en) 1945-01-22 1946-01-08 Centrifugal separator

Country Status (3)

Country Link
US (1) US2502945A (el)
CH (1) CH257491A (el)
NL (1) NL61695C (el)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893369A (en) * 1955-04-06 1959-07-07 Thompson Ramo Wooldridge Inc Fuel pump control system
US2906449A (en) * 1955-01-05 1959-09-29 Laval Separator Co De Flushing of centrifugal separators of the hermetic type

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US250868A (en) * 1881-12-13 Phillips abbott
US1693207A (en) * 1922-08-31 1928-11-27 Continental Oil Co Apparatus for revivification of filtering materials
GB308828A (el) * 1928-03-31 1929-11-21 Aktiebolaget Separator
US2239612A (en) * 1940-06-13 1941-04-22 Joseph P Lawlor Iron removal apparatus
US2264665A (en) * 1938-07-07 1941-12-02 Laval Separator Co De Process of clarifying and standardizing milk
US2418989A (en) * 1943-12-13 1947-04-15 Shandor Filter comprising a revolvable drum containing a mass of loose filter material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US250868A (en) * 1881-12-13 Phillips abbott
US1693207A (en) * 1922-08-31 1928-11-27 Continental Oil Co Apparatus for revivification of filtering materials
GB308828A (el) * 1928-03-31 1929-11-21 Aktiebolaget Separator
US2264665A (en) * 1938-07-07 1941-12-02 Laval Separator Co De Process of clarifying and standardizing milk
US2239612A (en) * 1940-06-13 1941-04-22 Joseph P Lawlor Iron removal apparatus
US2418989A (en) * 1943-12-13 1947-04-15 Shandor Filter comprising a revolvable drum containing a mass of loose filter material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906449A (en) * 1955-01-05 1959-09-29 Laval Separator Co De Flushing of centrifugal separators of the hermetic type
US2893369A (en) * 1955-04-06 1959-07-07 Thompson Ramo Wooldridge Inc Fuel pump control system

Also Published As

Publication number Publication date
CH257491A (de) 1948-10-15
NL61695C (el)

Similar Documents

Publication Publication Date Title
US3167509A (en) Centrifugal separator
US3117928A (en) Centrifugal separator
JP2596591B2 (ja) 遠心分離機の操作方法
US2628021A (en) Centrifuge with auxiliary feed arrangement
GB516806A (en) Centrifugal apparatus for the uninterrupted purifying of paper pulp
GB1099256A (en) A method and means for indicating the sludge level in the sludge space of the rotor in sludge centrifuges
GB1384521A (en) Centrifuge drums
US3777972A (en) Sludge centrifuge
US2502945A (en) Centrifugal separator
US2906449A (en) Flushing of centrifugal separators of the hermetic type
US2144229A (en) Centrifugal separator
GB1506628A (en) Centrifugal separators
GB1379376A (en) Automatic centrifuge drum for clarifying liquids
US2222727A (en) Process of effecting clean skimming in separating milk from cream and in centrifuges for practicing such method
US2003621A (en) Centrifugal separator
US2089043A (en) Process of purifying fruit juices
US2223999A (en) Process and apparatus for purifying liquids deleteriously affected by air
GB407084A (en) Improvements in or relating to centrifugal separators
US2820589A (en) Centrifugal separator
US4894050A (en) Sterile laboratory centrifuge
US3272430A (en) Sluidge centrifuge
JP4592934B2 (ja) 分離板型遠心分離機及びその運転方法
US4054244A (en) Centrifuge drum equipped with discharge valves
US2631777A (en) Process for centrifugal separation of yeast cells from beer
US1422852A (en) Centrifugal machine