EP0879089B1 - Method and device for the supply of control liquid to a centrifugal separator - Google Patents

Method and device for the supply of control liquid to a centrifugal separator Download PDF

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Publication number
EP0879089B1
EP0879089B1 EP97902780A EP97902780A EP0879089B1 EP 0879089 B1 EP0879089 B1 EP 0879089B1 EP 97902780 A EP97902780 A EP 97902780A EP 97902780 A EP97902780 A EP 97902780A EP 0879089 B1 EP0879089 B1 EP 0879089B1
Authority
EP
European Patent Office
Prior art keywords
wall element
control liquid
storing chamber
flow
displacement
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
EP97902780A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0879089A1 (en
Inventor
Per Gunnar Karlsson
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 AB
Original Assignee
Alfa Laval 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 Alfa Laval AB filed Critical Alfa Laval AB
Publication of EP0879089A1 publication Critical patent/EP0879089A1/en
Application granted granted Critical
Publication of EP0879089B1 publication Critical patent/EP0879089B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B04B11/04—Periodical feeding or discharging; Control arrangements therefor

Definitions

  • the opening chamber is filled up with control liquid, which is entrained into the rotation of the rotor.
  • the free liquid surface of the control liquid is then displaced radially inwardly and reaches rapidly a certain radial level, at which the pressure force from the control liquid accumulated in the opening chamber, upon lasting conditions when the control liquid is fully entrained into the rotation of the rotor, would exceed the resulting spring force and open the outlet valve whereby the control liquid would flow out of the closing chamber.
  • the embodiment of a supplying device according the invention shown in figure 3 differs from the embodiment shown in figure 2 in that the conduit 22 for the supply of control liquid from a source of control liquid in this example is connected directly to the storing chamber at the end wall 32 of the cylinder 25 and not via the conduit 19. Furthermore, the end of the second outlet passage 37 turned from the wall element 26 does not open in the axial end surface of the element 31 but in its circumferencial surface at a distance from its axial end. During its displacement axially in the second direction, which is to the right in the figure, the element 31 will close the first outlet passage 33 for a while before the second passage 37 is opened and control liquid can flow out of the storing chamber 29 through the same.
  • the three-way valve 23 Before a supply of control liquid is initiated in order to, for instance, as in the embodiments shown in the figures, open and re-close a passage 7 to let out more or less of the product contents of the separation chamber 5 when needed or at equal time periods, the three-way valve 23 has been set in the position so that the storing chamber 29 is evacuated of its air contents, for a time long enough for the pressure of the control liquid in the conduit to press the wall element 26 in a first direction to its end position towards the end wall 34 of the cylinder 25 and completely refill the storing chamber 29.
  • the conduit 19 opens at a radial level, which is located so much radially outside the radial level of the free liquid surface that there is equilibrium at the opening between the pressure from the rotating liquid body and the pressure from the conduit 22 for the supply of control liquid. Since the wall element 26 presses control liquid out of the storing chamber 29 at a substantially higher pressure the free liquid surface in the inlet 9 will be displaced radially inwardly and be located radially inside the radial level of the overflow outlet 20. This results in that control liquid flows via the overflow outlet 20 into the opening chamber 16 at a flow, which is higher than the flow, which passes out through the throttled outlet 18 whereby the opening chamber 16 gradually is filled up radially inwardly.

Landscapes

  • Centrifugal Separators (AREA)
EP97902780A 1996-01-29 1997-01-24 Method and device for the supply of control liquid to a centrifugal separator Expired - Lifetime EP0879089B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9600313 1996-01-29
SE9600313A SE9600313L (sv) 1996-01-29 1996-01-29 Sätt och anordning för tillförsel av manövervätska till en centrifugalseparator
PCT/SE1997/000114 WO1997027945A1 (en) 1996-01-29 1997-01-24 Method and device for the supply of control liquid to a centrifugal separator

Publications (2)

Publication Number Publication Date
EP0879089A1 EP0879089A1 (en) 1998-11-25
EP0879089B1 true EP0879089B1 (en) 2002-06-12

Family

ID=20401183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97902780A Expired - Lifetime EP0879089B1 (en) 1996-01-29 1997-01-24 Method and device for the supply of control liquid to a centrifugal separator

Country Status (9)

Country Link
EP (1) EP0879089B1 (ja)
JP (1) JP4253040B2 (ja)
KR (1) KR100478425B1 (ja)
CN (1) CN1079295C (ja)
AU (1) AU1678897A (ja)
DE (1) DE69713277T2 (ja)
RU (1) RU2196641C2 (ja)
SE (1) SE9600313L (ja)
WO (1) WO1997027945A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE510541C2 (sv) 1997-09-29 1999-05-31 Alfa Laval Ab Regleranordning för centrifugalseparator
KR102051207B1 (ko) * 2018-01-30 2019-12-03 이준석 원심분리용 피스톤

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4510052A (en) * 1984-02-03 1985-04-09 Alfa-Laval Separation Ab Operating system for centrifugal separators
SE467713B (sv) * 1988-07-12 1992-08-31 U & I Engineering Handelsbolag Foerfarande och anordning foer att i ett i huvudsak konstant floede av en fluid under en kort tidsperiod utmana en doserad volym av naemnda fluid
DE4026952C1 (en) * 1990-08-25 1991-09-19 Westfalia Separator Ag, 4740 Oelde, De Sepn. and classification of solids - involves centrifuge with slide control system

Also Published As

Publication number Publication date
SE505099C2 (sv) 1997-06-23
CN1079295C (zh) 2002-02-20
DE69713277T2 (de) 2002-10-31
SE9600313D0 (sv) 1996-01-29
CN1209760A (zh) 1999-03-03
KR19990082082A (ko) 1999-11-15
DE69713277D1 (de) 2002-07-18
SE9600313L (sv) 1997-06-23
AU1678897A (en) 1997-08-22
KR100478425B1 (ko) 2005-05-16
RU2196641C2 (ru) 2003-01-20
JP4253040B2 (ja) 2009-04-08
JP2000504269A (ja) 2000-04-11
EP0879089A1 (en) 1998-11-25
WO1997027945A1 (en) 1997-08-07

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