DE1034031B - Channel wheel, in particular single-channel wheel for centrifugal pumps to convey sludge-containing waste water - Google Patents
Channel wheel, in particular single-channel wheel for centrifugal pumps to convey sludge-containing waste waterInfo
- Publication number
- DE1034031B DE1034031B DEA24607A DEA0024607A DE1034031B DE 1034031 B DE1034031 B DE 1034031B DE A24607 A DEA24607 A DE A24607A DE A0024607 A DEA0024607 A DE A0024607A DE 1034031 B DE1034031 B DE 1034031B
- Authority
- DE
- Germany
- Prior art keywords
- blade
- axial direction
- channel
- channel wheel
- impeller
- 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.)
- Pending
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
- F04D29/225—Channel wheels, e.g. one blade or one flow channel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Kanalrad, insbesondere Einkanalrad für Kreiselpumpen zur Förderung schlammhaltiger Abwässer Zur Förderung schlammhaltiger Abwässer werden Kreiselpumpen mit Kanalrädern, deren die Laufradkanäle bildende Schaufeln am Eintritt axial gerichtet sind, verwendet. Derartige Kanalräder haben zur Förderung dieser Medien gegenüber den normalen beschaufelten Laufrädern den Vorteil, daß sie durch ihren größeren Durchflußquerschnitt weniger der Verstopfungsgefahr unterliegen. Den Kanalrädern haftet jedoch bis jetzt der ?Mangel an, daß sie als reine radiale Laufräder ausgebildet sind und deshalb Spiralgehäuse mit großer radialer Erstreckung erfordern. Dies wirkt sich insbesondere bei sogeuannten Einkanalrädern ungünstig aus. da diese, durch ihren großen äußeren Durchmesser bedingt, ein Spiralgehäuse benötigen, dessen Herstellungskosten sehr hoch liegen und das durch seine Größe zu Schwingungserscheinungen während des Betriebes der Pumpe neigt.Channel impeller, in particular single-channel impeller for centrifugal pumps for conveying sludge-containing sewage Centrifugal pumps are used to convey sludge-containing sewage with channel wheels whose blades forming the impeller channels are axially directed at the inlet are used. Such channel wheels have to promote this media opposite the normal bladed impellers have the advantage that they are larger due to their larger Flow cross-section are less subject to the risk of clogging. The canal wheels However, up to now there has been the problem that they are designed as pure radial impellers are and therefore require volute casing with a large radial extension. This works are unfavorable in particular with so-called single-channel wheels. since this, through Due to their large outer diameter, need a volute casing, its manufacturing costs are very high and, due to their size, cause vibration phenomena during the Operation of the pump tends.
Durch die Erfindung wird dieser -Nachteil beseitigt. Es wird dies dadurch erreicht, daß die die Laufradkanäle bildenden, in bekannter Weise am Eintritt axial gerichteten Schaufeln zum Schaufelaustritt hin in halbaxialer Richtung verlaufen.This disadvantage is eliminated by the invention. It becomes this achieved in that the impeller channels forming, in a known manner, at the inlet axially directed blades run in a semi-axial direction towards the blade outlet.
Eine vorteilhafte Ausführungsform des Gegen-#tandes der Erfindung ergibt sich, wenn die Schaufelrücken von den auf einem achsparallelen Zylinder liegenden, in Achsrichtung beliebig verlaufenden Eintrittskanten ab konvex gekrümmt sind, derart, claß die Krümmungsradien vom Schaufelanfang bis zum Schaufelende sich kontinuierlich verkleinern und die die beiden Endpunkte eines jeden auf Axialschnitte bezogenen Schaufelelementes verbindenden Sehnen am Schaufelanfang parallel zur Achsrichtung verlaufen und sich zum Schaufelende hin kontinuierlich in die halbaxiale Richtung neigen. Diese Ausführung wird vor allem dort vorteilhaft eingesetzt, wo mit sperrigen Gütern durchsetzte Medien gefördert werden. Außerdem bietet diese Ausführung bei Finkanalrädern den Vorteil, daß der durch die Ein-und Austrittskante gebildete Durchflußquerschnitt des Laufrades bei kleinstem äußeren Durchmesser der Schaufel gleich dem des Saugmundes des Laufrades gewählt werden kann.An advantageous embodiment of the subject matter of the invention results when the blade backs from the one lying on an axially parallel cylinder, Any leading edges running in the axial direction are convexly curved in such a way, The radii of curvature from the start of the blade to the end of the blade are continuous and the two end points of each related to axial sections Blade element connecting tendons at the beginning of the blade parallel to the axial direction run and continuously towards the blade end in the semi-axial direction tend. This version is used to advantage above all where it is bulky Media interspersed with goods are promoted. This version also offers Fin channel wheels have the advantage that the flow cross-section formed by the inlet and outlet edges of the impeller with the smallest outer diameter of the blade is the same as that of the suction mouth of the impeller can be selected.
In der Zeichnung ist in der Abb. 1 ein Ausführungsbeispiel der Erfindung in Vorderansicht dargestellt; Abb. 2 zeigt einen Schnitt A-A der Abb. 1.In the drawing, Fig. 1 shows an embodiment of the invention shown in front view; Fig. 2 shows a section A-A of Fig. 1.
An die auf einem achsparallelen Zylinder mit dein Durchmesser cz liegende Eintrittskante 1 eines Einkanairades schließt sich die nach außen konvex gekrümmte Schaufel 2 an. Entlang dem Umfang 3 der Schaufel nimmt ihre konvexe Krümmung laufend zu, m obei die die beiden Endpunkte 4 und 5 verbindende Sehne 6 des Schaufelelementes 7 bereits zur Achsrichtung geneigt ist, während die durch die Endpunkte 8 und 9 gelegte Sehne 10 am Schaufelauslauf 11 eine halbaxial gerichtete Neigung einnimmt. Das halbaxial ausgebildete Spiralgehäuse 12 schließt sich Strömungstechnisch gut an das Laufrad an.The one lying on an axially parallel cylinder with your diameter cz Leading edge 1 of a single-channel wheel closes the outwardly convexly curved one Shovel 2 on. Its convex curvature continuously increases along the circumference 3 of the blade to, m obei the chord 6 of the blade element connecting the two end points 4 and 5 7 is already inclined to the axial direction, while the end points 8 and 9 laid tendon 10 at the blade outlet 11 assumes a semi-axially directed inclination. The semi-axially formed spiral housing 12 closes well in terms of flow to the impeller.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA24607A DE1034031B (en) | 1956-03-31 | 1956-03-31 | Channel wheel, in particular single-channel wheel for centrifugal pumps to convey sludge-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA24607A DE1034031B (en) | 1956-03-31 | 1956-03-31 | Channel wheel, in particular single-channel wheel for centrifugal pumps to convey sludge-containing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1034031B true DE1034031B (en) | 1958-07-10 |
Family
ID=6925706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEA24607A Pending DE1034031B (en) | 1956-03-31 | 1956-03-31 | Channel wheel, in particular single-channel wheel for centrifugal pumps to convey sludge-containing waste water |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1034031B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1137629B (en) * | 1959-04-02 | 1962-10-04 | Georg Volland Dr Ing | Single-channel centrifugal pump, especially for pumping waste water |
| DE3615686A1 (en) * | 1986-05-09 | 1987-11-12 | Klein Schanzlin & Becker Ag | CHANNEL WHEEL FOR CENTRIFUGAL PUMPS |
| US5348444A (en) * | 1990-05-12 | 1994-09-20 | Ksb Aktiengesellschaft | Single-blade impeller for centrifugal pumps |
| JP2005240764A (en) * | 2004-02-27 | 2005-09-08 | Shin Meiwa Ind Co Ltd | Liquid pump |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH94909A (en) * | 1921-05-21 | 1922-06-01 | Peter Alfred | Channelless centrifugal pump, especially for pumping impure liquids with different specific weights. |
| DE962222C (en) * | 1953-08-23 | 1957-04-18 | Amag Hilpert Pegnitzhuette Ag | Impeller for centrifugal pumps, particularly for pumping liquids containing solid admixtures |
-
1956
- 1956-03-31 DE DEA24607A patent/DE1034031B/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH94909A (en) * | 1921-05-21 | 1922-06-01 | Peter Alfred | Channelless centrifugal pump, especially for pumping impure liquids with different specific weights. |
| DE962222C (en) * | 1953-08-23 | 1957-04-18 | Amag Hilpert Pegnitzhuette Ag | Impeller for centrifugal pumps, particularly for pumping liquids containing solid admixtures |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1137629B (en) * | 1959-04-02 | 1962-10-04 | Georg Volland Dr Ing | Single-channel centrifugal pump, especially for pumping waste water |
| DE3615686A1 (en) * | 1986-05-09 | 1987-11-12 | Klein Schanzlin & Becker Ag | CHANNEL WHEEL FOR CENTRIFUGAL PUMPS |
| US5348444A (en) * | 1990-05-12 | 1994-09-20 | Ksb Aktiengesellschaft | Single-blade impeller for centrifugal pumps |
| JP2005240764A (en) * | 2004-02-27 | 2005-09-08 | Shin Meiwa Ind Co Ltd | Liquid pump |
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