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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 water

Info

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
Application number
DEA24607A
Other languages
German (de)
Inventor
Dipl-Ing Walther Buschhorn
Friedrich Lange
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.)
Amag Hilpert Pegnitzhuette A G
Original Assignee
Amag Hilpert Pegnitzhuette A G
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 Amag Hilpert Pegnitzhuette A G filed Critical Amag Hilpert Pegnitzhuette A G
Priority to DEA24607A priority Critical patent/DE1034031B/en
Publication of DE1034031B publication Critical patent/DE1034031B/en
Pending legal-status Critical Current

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
    • F04D29/225Channel 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)

PATENTANSPRÜCHE: 1. Kanalrad, insbesondere Einkanalrad für Kreiselpumpen zur Förderung schlammhaltiger Abwässer, dessen die Laufradkanäle bildende Schaufeln am Eintritt axial gerichtet sind, dadurch gekennzeichnet. daß die Schaufeln zum Schaufelaustritt hin in halbaxialer Richtung verlaufen. PATENT CLAIMS: 1. Channel impeller, in particular single-channel impeller for centrifugal pumps for pumping sludge-containing wastewater, the blades of which forming the impeller channels are axially directed at the inlet, characterized. that the blades run in a semi-axial direction towards the blade outlet. 2. Kanalrad nach Anspruch 1, dadurch gekennzeichnet, daß die Schaufelrücken von den auf einem achsparallelen Zylinder liegenden, in Achsrichtung beliebig verlaufenden Eintrittskanten ab konvex gekrümmt sind, derart, daß 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. In Betracht gezogene Druckschriften: Schweizerische Patentschrift Nr. 94 909. In Betracht gezogene ältere Patente Deutsches Patent -Tr. 962 222.2. Channel wheel according to claim 1, characterized in that the blade back of the on an axially parallel Cylinder lying, in the axial direction arbitrarily extending leading edges from convex are curved in such a way that the radii of curvature from the blade start to the blade end continuously shrink and the two end points of each on axial sections related vane element connecting tendons at the start of the vane parallel to the axial direction run and continuously towards the blade end in the semi-axial direction tend. Publications considered: Swiss Patent No. 94 909. Older patents considered German Patent -Tr. 962 222.
DEA24607A 1956-03-31 1956-03-31 Channel wheel, in particular single-channel wheel for centrifugal pumps to convey sludge-containing waste water Pending DE1034031B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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