Global Patent Index - EP 2778422 A4

EP 2778422 A4 20151104 - PIT BARREL PUMP AND METHOD FOR INCORPORATING SAME

Title (en)

PIT BARREL PUMP AND METHOD FOR INCORPORATING SAME

Title (de)

GRUBENFASSPUMPE UND VERFAHREN ZU IHRER HERSTELLUNG

Title (fr)

POMPE À BARIL DE FOSSE ET PROCÉDÉ PERMETTANT D'INCORPORER LADITE POMPE

Publication

EP 2778422 A4 20151104 (EN)

Application

EP 12847327 A 20121016

Priority

  • JP 2011246613 A 20111110
  • JP 2012076709 W 20121016

Abstract (en)

[origin: EP2778422A1] A pit barrel type pump has a suction vortex preventing means. A vertical shaft pump comprises a pump suction port which is disposed in a lower end part in order to suck in a water, an impeller which is adjacent to the suction port and is attached to a rotary shaft, and a diffuser which is arranged on the downstream side of the impeller to boost the water to which a swirl component has been given by the impeller. A vortex generation preventing device is installed on the lower side of the pump suction port. An outer diameter Æ d 0 of the pump suction port and the vortex generation preventing device is made smaller than a maximum outer diameter Æ d 3 of the diffuser such that the vortex generation preventing device can be taken out from within the pit together with the vertical shaft pump.

IPC 8 full level

F04D 13/08 (2006.01); F04D 29/42 (2006.01); F04D 29/44 (2006.01)

CPC (source: EP)

F04D 13/08 (2013.01); F04D 29/4273 (2013.01); F04D 29/448 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2778422 A1 20140917; EP 2778422 A4 20151104; JP 2013104308 A 20130530; JP 5789487 B2 20151007; KR 101598165 B1 20160226; KR 20140074999 A 20140618; WO 2013069418 A1 20130516

DOCDB simple family (application)

EP 12847327 A 20121016; JP 2011246613 A 20111110; JP 2012076709 W 20121016; KR 20147012445 A 20121016