EP0243518A1 - Pompe centrifuge pour recirculation d'eau - Google Patents

Pompe centrifuge pour recirculation d'eau Download PDF

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Publication number
EP0243518A1
EP0243518A1 EP86105878A EP86105878A EP0243518A1 EP 0243518 A1 EP0243518 A1 EP 0243518A1 EP 86105878 A EP86105878 A EP 86105878A EP 86105878 A EP86105878 A EP 86105878A EP 0243518 A1 EP0243518 A1 EP 0243518A1
Authority
EP
European Patent Office
Prior art keywords
electric motor
impeller
centrifugal pump
prefilter
pump body
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.)
Withdrawn
Application number
EP86105878A
Other languages
German (de)
English (en)
Inventor
José 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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0243518A1 publication Critical patent/EP0243518A1/fr
Withdrawn legal-status Critical Current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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
    • F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction

Definitions

  • the prefilter is so arranged as to comprise a vertical filter bowl, fitted inside an end bowl sealed hermetically by an externally threaded cover and provided with an external intake mouth and an outlet pipe connected to the axial inlet of the impeller, so that the intake liquid is forced to pass through the walls of the afore-mentioned filter bowl before reaching the electropump.
  • the pump body which forms a single part with the prefilter, is linked to the electric motor housing by a markedly truncated cone-shape shield.
  • the pressure chamber and the electropump are hermetically separated by a double-tapered spacer with a centre hole and arranged so that its outer edge is trapped.
  • An 0-ring seal is placed between the respective contiguous edges of the above-mentioned connecting shield and the pump body, while the edges of the centre hole hold the conventional mechanical ceramic seal of the impeller.
  • the impeller shaft is provided with a hollow cylindrical extension, adapted for fitting on the electric motor shaft and of a length such that its inner end is positioned between the mechanical seal and the electric motor.
  • the inner edge of the diffuser engages in the linking edge of the two cones of the biconic spacer.
  • the markedly biconic-shaped spacer preferably of stainless steel, offers various uses or applications. The most important of these is to act ad a heat sink when the pump is working with a water flow below its rating. It also acts as a support for the mechanical seal.
  • centrifugal pump in question lies in the fact that the biconic spacer, on the wall of the inner cone, is provided with at least one shoulder for causing swirl in the water crown while the impeller is working in order to improve the cooling of the mechanical seal.
  • centrifugal water circulation pump in question consists of an electric pump 1 and a prefilter 2, with a pressure chamber 3 placed between them .
  • the liquid enters coaxially to the impeller 6 and is dispatched by centrifugal force to a pressure chamber 9, placed between the electric motor 4 and the prefilter 2.
  • the prefilter 2 is so arranged that it comprises a vertical filter bowl 10 installed inside an outer bowl 11 tightly sealed by an outside threaded cover 12 and fitted with an external intake mouth 13 and an outlet pipe 14 connected to the axial inlet of the impeller 6.
  • the intake liquid is forced to pass through the walls of the above-mentioned filter bowl 10 before reaching the electric pump 1.
  • the pump body forming an integral part with the prefilter 2, is linked to the housing of the electric motor 4 by a distinctly truncated cone-shaped connecting shield 15.
  • the pressure chamber 3 and the electric pump 1 are hermetically separated by a distinctly biconic-shaped spacer 16.
  • the part 16 is provided with a centre hole and so arranged that its outer edge 17 is trapped.
  • the edges of the afore-mentioned centre hole hold a conventional mechanical ceramic seal 19 of the impeller 6.
  • the impeller shaft is provided with a hollow cylindrical extension 20 adapted for fitting on the shaft 5 of the electric motor.
  • the length of the extension is such that its inner end is positioned between the mechanical seal 19 and the electric motor 4.
  • the inner edge 21 of the diffuser 8 engages in the linking edge 22 of the two cones of the biconic spacer 16.
  • the electric motor 4 is linked to the pump body and to the prefilter 2 by only four through bolts 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP86105878A 1986-05-09 1986-04-29 Pompe centrifuge pour recirculation d'eau Withdrawn EP0243518A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PT8255786A PT82557A (en) 1986-05-09 1986-05-09 Centrifugal pump for water recirculation

Publications (1)

Publication Number Publication Date
EP0243518A1 true EP0243518A1 (fr) 1987-11-04

Family

ID=20083833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105878A Withdrawn EP0243518A1 (fr) 1986-05-09 1986-04-29 Pompe centrifuge pour recirculation d'eau

Country Status (2)

Country Link
EP (1) EP0243518A1 (fr)
PT (1) PT82557A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246645A2 (fr) * 1986-05-22 1987-11-25 Jacuzzi Inc. Refroidissement du système d'étanchéité des pompes en matière plastique
DE29520422U1 (de) * 1995-12-22 1997-04-30 Speck Pumpenfabrik Walter Spec Selbstansaugende tauchfähige Kreiselpumpe
DE102006023379B4 (de) * 2006-05-17 2013-10-02 Al-Ko Kober Ag Flüssigkeitspumpe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252575A (en) * 1962-06-26 1966-05-24 Jacuzzi Bros Inc Pump and filter assembly for swimming pool systems
DE2011536A1 (de) * 1969-04-02 1970-10-15 Lowara S.p.A. (Societa per Azioni), Montecchio Maggiore, Vicenza (Italien) Pumpe, insbesondere Kreiselpumpe
FR2123931A5 (fr) * 1971-02-05 1972-09-15 Speck Pumpen Daniel Spec
US3826589A (en) * 1972-06-22 1974-07-30 Sta Rite Industries Plastic pump construction
DE2334959A1 (de) * 1973-07-10 1975-01-30 Rudolf Dipl Ing Brazel Fluessigkeitspumpe mit kunststoffgehaeuse

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252575A (en) * 1962-06-26 1966-05-24 Jacuzzi Bros Inc Pump and filter assembly for swimming pool systems
DE2011536A1 (de) * 1969-04-02 1970-10-15 Lowara S.p.A. (Societa per Azioni), Montecchio Maggiore, Vicenza (Italien) Pumpe, insbesondere Kreiselpumpe
FR2123931A5 (fr) * 1971-02-05 1972-09-15 Speck Pumpen Daniel Spec
US3826589A (en) * 1972-06-22 1974-07-30 Sta Rite Industries Plastic pump construction
DE2334959A1 (de) * 1973-07-10 1975-01-30 Rudolf Dipl Ing Brazel Fluessigkeitspumpe mit kunststoffgehaeuse

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0246645A2 (fr) * 1986-05-22 1987-11-25 Jacuzzi Inc. Refroidissement du système d'étanchéité des pompes en matière plastique
EP0246645A3 (fr) * 1986-05-22 1989-06-07 Jacuzzi Inc. Refroidissement du système d'étanchéité des pompes en matière plastique
DE29520422U1 (de) * 1995-12-22 1997-04-30 Speck Pumpenfabrik Walter Spec Selbstansaugende tauchfähige Kreiselpumpe
DE102006023379B4 (de) * 2006-05-17 2013-10-02 Al-Ko Kober Ag Flüssigkeitspumpe

Also Published As

Publication number Publication date
PT82557A (en) 1986-11-28

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Effective date: 19880505