EP0294308B1 - Kreiselpumpenschaufelrad - Google Patents

Kreiselpumpenschaufelrad Download PDF

Info

Publication number
EP0294308B1
EP0294308B1 EP88500056A EP88500056A EP0294308B1 EP 0294308 B1 EP0294308 B1 EP 0294308B1 EP 88500056 A EP88500056 A EP 88500056A EP 88500056 A EP88500056 A EP 88500056A EP 0294308 B1 EP0294308 B1 EP 0294308B1
Authority
EP
European Patent Office
Prior art keywords
central
disc
hub
orifice
blades
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.)
Expired - Lifetime
Application number
EP88500056A
Other languages
English (en)
French (fr)
Other versions
EP0294308A1 (de
Inventor
Jose Pages Pages
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.)
Bombas Electricas SA BOELSA
Original Assignee
Bombas Electricas SA BOELSA
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 Bombas Electricas SA BOELSA filed Critical Bombas Electricas SA BOELSA
Priority to AT88500056T priority Critical patent/ATE79928T1/de
Publication of EP0294308A1 publication Critical patent/EP0294308A1/de
Application granted granted Critical
Publication of EP0294308B1 publication Critical patent/EP0294308B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D29/2205—Conventional flow pattern
    • F04D29/2222—Construction and assembly

Definitions

  • This invention relates to a bladed impellor for centrifugal pumps, of the type formed by two coaxial superimposed discs of equal diameter, between which there is regularly arranged a plurality of blades, the liquid entering axially to said blades and then being discharged by centrifugal force between the edges of the discs.
  • the impellor of the invention is characterized in that one of the discs is provided with a large axial orifice and bears the said blades fixedly attached to the inner surface thereof, while the other disc is provided with a central injection moulded hub of a substantially rigid material, provided with a central tubular orifice, coaxial with that of the first disc, but of smaller diameter and provided internally with a key adapted to engage a key slot of the drive shaft, the disc bearing the hub being also provided previously with a central orifice and several smaller orifices around the central one, the injection moulded material of the hub passing through said smaller orifices after being injected.
  • the impellor may be seen to comprise two coaxial superimposed discs 1 and 2 of like diameter, between which a plurality of blades 3 are regularly disposed.
  • the liquid flows in axially to said blades through a large orifice 5 in the disc 1 and is then discharged by centrifugal force between the edges of the discs 1 and 2, through the openings 4.
  • the disc 1, apart from the said central orifice 5, is provided with the blades 3, fixedly attached to the inner surface thereof.
  • the disc 2 is provided with a central injection moulded hub 6, of a substantially rigid material, provided with a central tubular orifice 7 coaxial with the orifice 5 but having a smaller diameter than the latter.
  • the hub 6 is provided internally with a key 8 adapted to engage a key slot of the drive shaft, not shown.
  • the disc 2 is provided initially with a central orifice 9, corresponding to the orifice 7 of the hub 6 and several smaller orifices 10 around the central one 9, so that the injection moulded material of the hub 6 is disposed through said smaller orifices 10 after being injected, as may be seen in Fig. 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (1)

  1. Schaufelläufer für Zentrifugalpumpen, von der Art die aus zwei achsfluchtend übereinander angeordneten Scheiben (1,2) einander ähnlichen Durchmessers besteht, zwischen welchen eine in regelsmässigen Abständen angeordnete Mehrzahl won Schaufeln (3) angeordnet ist, dadurch gekennzeichnet, dass eine der Scheiben (1,2) mit einer grossen axialen Oeffnung (5) ausgestattet ist und die genannten Schaufeln (3) fest auf der Innenfläche der Scheibe befestigt sind, während die andere Scheibe mit einer mittig angeordneten spritzgussgefertigten Nabe (6) aus einem grösstenteils starren Werkstoff gefertigt ist, die eine mittige rohrförmige Oeffnung (7) aufweist. Die die Nabe (5) tragende Scheibe wurde zuvor mit einer mittigen Oeffnung (9), sowie mit einer Mehrzahl von kleineren Oeffnungen (10) ausgestattet, welche rund um die Mittelöffnung (9) angeordnet sind, so dass das Spritzguss-Material der Nabe (6) nach dessen Einspritzung durch die genannten kleineren Oeffnungen (10) durchtritt.
EP88500056A 1987-06-05 1988-06-03 Kreiselpumpenschaufelrad Expired - Lifetime EP0294308B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88500056T ATE79928T1 (de) 1987-06-05 1988-06-03 Kreiselpumpenschaufelrad.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES19878702114U ES1002716Y (es) 1987-06-05 1987-06-05 Turbina con alabes para bomba centrifuga
ES8702114U 1987-06-05

Publications (2)

Publication Number Publication Date
EP0294308A1 EP0294308A1 (de) 1988-12-07
EP0294308B1 true EP0294308B1 (de) 1992-08-26

Family

ID=8251811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88500056A Expired - Lifetime EP0294308B1 (de) 1987-06-05 1988-06-03 Kreiselpumpenschaufelrad

Country Status (5)

Country Link
EP (1) EP0294308B1 (de)
AT (1) ATE79928T1 (de)
DE (1) DE3874000T2 (de)
ES (1) ES1002716Y (de)
GR (1) GR3006308T3 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3352599A (en) * 1999-03-23 2000-10-09 Turk Elektrik Endustrisi A.S. Insulated fan
CN102116312B (zh) * 2011-03-09 2012-10-17 浙江新界泵业股份有限公司 用于离心泵的叶轮

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844100A (en) * 1954-07-06 1958-07-22 Kurt J Heinicke Sheet metal centrifugal pump
US3070026A (en) * 1958-12-03 1962-12-25 Tait Mfg Co The Pumps
CH416921A (de) * 1964-07-07 1966-07-15 Patege Ag Metallenes Lüfterrad
NL6710533A (de) * 1967-07-29 1969-01-31
DE2126087A1 (de) * 1971-05-26 1972-12-07 Engelbrecht & Lemmerbrock Radialgebläse mit Nabe für die Tragböden der Gebläseflügel

Also Published As

Publication number Publication date
GR3006308T3 (de) 1993-06-21
ES1002716Y (es) 1989-02-01
EP0294308A1 (de) 1988-12-07
DE3874000D1 (de) 1992-10-01
ATE79928T1 (de) 1992-09-15
DE3874000T2 (de) 1993-01-14
ES1002716U (es) 1988-06-16

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