CH275923A - Centrifugal pump impeller. - Google Patents

Centrifugal pump impeller.

Info

Publication number
CH275923A
CH275923A CH275923DA CH275923A CH 275923 A CH275923 A CH 275923A CH 275923D A CH275923D A CH 275923DA CH 275923 A CH275923 A CH 275923A
Authority
CH
Switzerland
Prior art keywords
centrifugal pump
pump impeller
centrifugal
blade
substances
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellschaft Gebr Sulzer
Original Assignee
Sulzer 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
Application filed by Sulzer Ag filed Critical Sulzer Ag
Publication of CH275923A publication Critical patent/CH275923A/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2238Special flow patterns
    • F04D29/2255Special flow patterns flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2261Rotors specially for centrifugal pumps with special measures
    • F04D29/2288Rotors specially for centrifugal pumps with special measures for comminuting, mixing or separating

Description

  

      Zentrifugalpumpen-Laufrad.       Die Erfindung betrifft ein     Zentrifugal-          punipen-Laufrad,    welches zur Förderung von  Stoffen dient, die unter der     Zentrifugalwir-          kung    zur Trennung neigen, das aber selbstver  ständlich auch für Wasser     und    sich ähnlich  verhaltende Flüssigkeiten verwendbar ist.  



  Die heute üblichen     Zentrifugalpumpen-          räder    weisen Schaufelformen auf, die grund  sätzlich den     Fig.1    und 4 entsprechen. Kenn  zeichnend für diese Schaufelformen ist die  Erscheinung, dass die Relativgeschwindigkeit w  des     Fördergutes    auf der Relativbahn     A-B     des     Laufschaufelkanals    vom Anfangswert     w1     aus ständig abnimmt bis zum Endwert     zc=,    wie       e5    Kurve I in     Fig.        \?    grundsätzlich zeigt.  



  Bei der Förderung von gashaltigen oder       schäumenden    Flüssigkeiten, Suspensionen nie  derer oder höherer Konzentration, Gemischen  von Stoffen     ungleieher    spezifischer Gewichte  usw.     begiinsti-t    die     Gesehwindigkeitsabnalnne     nach dein Eintritt.

   in den     Laufsehaufelkanal          deren        liier        unerwünschte        Trennung.    So     wer-          den        1ieispielsweise    aus gasführenden Flüssig  keiten in der Gegend des Radmittels durch  die     Zentrifiigalwirkung    Gasmassen ausgeschie  den und angesammelt, welche die Förderung       1)eeinträeliti-en.     



  Die     vorlie;ende    Erfindung ermöglicht die       j'erliindei,ung-    der erwähnten Trennung, und    sie ist dadurch gekennzeichnet, dass bei belie  big gewähltem     Breitenverhältnis        b,:        b1    der       Laufsehaufelkanäle        (Fig.4)    die Form der  Laufschaufeln derart. ist, dass die Relativ  geschwindigkeit des Fördergutes unmittelbar  nach dem Eintritt in den     Laufschaufelkanal     wächst.

   Der Verlauf der Relativgeschwindig  keit in einem     Laufschaufelkanal    gemäss vor  liegender Erfindung folgt damit grundsätz  lich der Kurve     II    in     Fig.    2.     Fig.    3 zeigt eine  beispielsweise Form von erfindungsgemäss ge  formten Schaufeln.  



  Die Freiheit. in der Wahl des     Breitenver-          hältnisses,    welche es gestattet,     b,    grösser als       b1,    gleich     b1    oder kleiner als     b1    zu wählen,  erleichtert die Anwendung der Erfindung auf       Zentrifugalpumpen    mit Gehäusen üblicher  Bauart und auf bestehende Pumpen.



      Centrifugal pump impeller. The invention relates to a centrifugal punipen impeller which is used to convey substances which tend to separate under the centrifugal effect, but which can of course also be used for water and similarly behaving liquids.



  The centrifugal pump impellers customary today have blade shapes which basically correspond to FIGS. A characteristic of these blade shapes is the phenomenon that the relative speed w of the material to be conveyed on the relative path A-B of the rotor blade channel continuously decreases from the initial value w1 to the final value zc =, like e5 curve I in FIG. basically shows.



  When pumping gaseous or foaming liquids, suspensions of lower or higher concentration, mixtures of substances of unrelated specific weights, etc., the decrease in speed begins after your entry.

   in the moving blade canal their somewhat undesirable separation. For example, gas masses are excreted and accumulated from gas-carrying liquids in the area of the wheel center due to the centrifugal effect, which initiate the conveyance 1).



  The present invention enables the j'erliindei, as well as the mentioned separation, and it is characterized in that with any chosen width ratio b: b1 of the blade channels (FIG. 4) the shape of the blades is such. is that the relative speed of the conveyed material increases immediately after entering the blade channel.

   The course of the relative speed in a rotor blade channel according to the present invention thus basically follows curve II in FIG. 2. FIG. 3 shows an example of the shape of blades shaped according to the invention.



  The freedom. The choice of the width ratio, which makes it possible to choose b, greater than b1, equal to b1 or smaller than b1, simplifies the application of the invention to centrifugal pumps with housings of the usual type and to existing pumps.

 

Claims (1)

PATENTANSPRUCl-I Zentrifugalpumpen-Laufrad zur Förde rung von Stoffen, die unter der Zentrifugal wirkung zur Trennung neigen, dadurch ge kennzeichnet, dass bei beliebig gewähltem Breitenverhältnis b": b, der Laufschaufel kanäle die Form der Laufschaufeln derart ist, dass die Relativgeseh vindigkeit des Förder- gutes unmittelbar nach dem Eintritt in den Laufsehaufelkanal wächst. PATENTANSPRUCl-I centrifugal pump impeller for the conveyance of substances that tend to separate under the centrifugal effect, characterized in that with any chosen width ratio b ": b, the blade channels the shape of the blades is such that the relative visibility of the Material to be conveyed grows immediately after entering the moving blade channel.
CH275923D 1949-08-24 1949-08-24 Centrifugal pump impeller. CH275923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH275923T 1949-08-24

Publications (1)

Publication Number Publication Date
CH275923A true CH275923A (en) 1951-06-15

Family

ID=4480482

Family Applications (1)

Application Number Title Priority Date Filing Date
CH275923D CH275923A (en) 1949-08-24 1949-08-24 Centrifugal pump impeller.

Country Status (1)

Country Link
CH (1) CH275923A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018312B (en) * 1953-12-10 1957-10-24 Sulzer Ag Impeller for conveyor machines working by means of centrifugal force
US4732541A (en) * 1985-06-10 1988-03-22 Baker International Corporation Centrifugal elastomeric coated impellers
WO1994015102A1 (en) * 1992-12-29 1994-07-07 Vortex Australia Pty. Ltd. Pump impeller and centrifugal slurry pump incorporating same
AU691112B2 (en) * 1992-12-29 1998-05-07 Vortex Australia Pty. Ltd. Pump impeller and centrifugal slurry pump incorporating same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018312B (en) * 1953-12-10 1957-10-24 Sulzer Ag Impeller for conveyor machines working by means of centrifugal force
US4732541A (en) * 1985-06-10 1988-03-22 Baker International Corporation Centrifugal elastomeric coated impellers
WO1994015102A1 (en) * 1992-12-29 1994-07-07 Vortex Australia Pty. Ltd. Pump impeller and centrifugal slurry pump incorporating same
AU691112B2 (en) * 1992-12-29 1998-05-07 Vortex Australia Pty. Ltd. Pump impeller and centrifugal slurry pump incorporating same

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