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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/2255—Special flow patterns flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2288—Rotors 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)
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)
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 |
-
1949
- 1949-08-24 CH CH275923D patent/CH275923A/en unknown
Cited By (4)
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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