SE9303987D0 - Device at a vacuum pump - Google Patents

Device at a vacuum pump

Info

Publication number
SE9303987D0
SE9303987D0 SE9303987A SE9303987A SE9303987D0 SE 9303987 D0 SE9303987 D0 SE 9303987D0 SE 9303987 A SE9303987 A SE 9303987A SE 9303987 A SE9303987 A SE 9303987A SE 9303987 D0 SE9303987 D0 SE 9303987D0
Authority
SE
Sweden
Prior art keywords
vacuum chamber
vacuum
channel
pressure
pump
Prior art date
Application number
SE9303987A
Other languages
Swedish (sv)
Other versions
SE502127C2 (en
SE9303987L (en
Inventor
Rolf Ekholm
Ulf Jansson
Original Assignee
Kamyr 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 Kamyr Ab filed Critical Kamyr Ab
Priority to SE9303987A priority Critical patent/SE502127C2/en
Publication of SE9303987D0 publication Critical patent/SE9303987D0/en
Priority to AU12069/95A priority patent/AU1206995A/en
Priority to PCT/SE1994/001125 priority patent/WO1995015439A1/en
Publication of SE9303987L publication Critical patent/SE9303987L/en
Publication of SE502127C2 publication Critical patent/SE502127C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C19/00—Rotary-piston pumps with fluid ring or the like, specially adapted for elastic fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/005—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/20—Pumps with means for separating and evacuating the gaseous phase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/13—Kind or type mixed, e.g. two-phase fluid
    • F05B2210/132—Pumps with means for separating and evacuating the gaseous phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Paper (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A device in a vacuum pump (23) of the liquid-ring type, serving a pulp pump and having a cylindrical vacuum chamber (25) and an impeller (26) eccentrically journalled in the vacuum chamber to rotate therein together with a liquid ring (29). According to the invention a channel (50) is arranged in the cylindrical wall (30) of the vacuum chamber, said channel having a first section (51) that is located within a converging pressure space (33) of the vacuum chamber and is in open communication therewith, and a second section (52) that is located within a diverging suction space (34) of the vacuum chamber and is in open communication therewith. A valve means (53) is arranged in the pump housing (24) between the channel sections (51, 52) in order, in a first position, to close the connection between them and thus the connection between the pressure and suction spaces and, in a second position, to open said connections, whereby pressure equalisation is achieved and the vacuum function ceases temporarily.
SE9303987A 1993-12-01 1993-12-01 Device at a vacuum pump for venting the suspension pump SE502127C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9303987A SE502127C2 (en) 1993-12-01 1993-12-01 Device at a vacuum pump for venting the suspension pump
AU12069/95A AU1206995A (en) 1993-12-01 1994-11-24 A device in a vacuum pump
PCT/SE1994/001125 WO1995015439A1 (en) 1993-12-01 1994-11-24 A device in a vacuum pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303987A SE502127C2 (en) 1993-12-01 1993-12-01 Device at a vacuum pump for venting the suspension pump

Publications (3)

Publication Number Publication Date
SE9303987D0 true SE9303987D0 (en) 1993-12-01
SE9303987L SE9303987L (en) 1995-06-02
SE502127C2 SE502127C2 (en) 1995-08-28

Family

ID=20391950

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303987A SE502127C2 (en) 1993-12-01 1993-12-01 Device at a vacuum pump for venting the suspension pump

Country Status (3)

Country Link
AU (1) AU1206995A (en)
SE (1) SE502127C2 (en)
WO (1) WO1995015439A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1061131C (en) * 1996-07-17 2001-01-24 于进才 Method for pumping high-vacuum degree
SE519641C2 (en) 2001-08-08 2003-03-25 Metso Paper Inc Combined centrifugal and vacuum pump for pumping pulp
DE102008009647B4 (en) * 2008-02-18 2011-04-14 Christian Dr. Koch Sludge reactor pump for simultaneous transport of solids, liquids, vapors and gases
AT510538B1 (en) * 2010-09-27 2013-02-15 Andritz Ag Maschf CENTRIFUGAL PUMP
DE102012000980A1 (en) * 2012-01-20 2013-07-25 Ecotecfuel Llc Method and device for the mechanical heating of a substance mixture
ES2610922T3 (en) * 2012-03-29 2017-05-04 Weir Minerals Europe Limited Foam pump and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6812819A (en) * 1968-03-07 1969-09-09
SE467982B (en) * 1990-12-19 1992-10-12 Kamyr Ab SUSPENSION PUMP WITH BUILT-IN VACUUM PUMP, WHICH VACUUM PUMP HAS VARIABLE CAPACITY
SE468293C (en) * 1991-12-03 1996-09-09 Kvaerner Pulping Tech Pump with built-in vacuum pump

Also Published As

Publication number Publication date
SE502127C2 (en) 1995-08-28
WO1995015439A1 (en) 1995-06-08
AU1206995A (en) 1995-06-19
SE9303987L (en) 1995-06-02

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