EP 2660473 B1 20161123 - Waste water pump
Title (en)
Waste water pump
Title (de)
Schmutzwasserpumpe
Title (fr)
Pompe à eaux usées
Publication
Application
Priority
EP 12166789 A 20120504
Abstract (en)
[origin: EP2660473A1] The pump has an impeller (10) including a suction port, a sealing surface (14) annularly surrounding the suction port and a bearing on a stationary seal (18). A groove (28) is formed in the sealing surface, and extends beyond a bearing-contact region of the stationary seal on the sealing surface. The groove includes an end (30) in connection with an impeller side chamber and an opposite end (32) in connection with a suction side of the impeller. A surface (34) of the seal is arranged in the impeller side chamber adjacent to the stationary seal for producing turbulences.
IPC 8 full level
F04D 7/04 (2006.01); F04D 29/16 (2006.01)
CPC (source: EP US)
F04D 7/045 (2013.01 - EP US); F04D 29/106 (2013.01 - US); F04D 29/167 (2013.01 - EP US)
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 2660473 A1 20131106; EP 2660473 B1 20161123; CN 103382939 A 20131106; CN 103382939 B 20160622; US 2013294910 A1 20131107; US 9500204 B2 20161122
DOCDB simple family (application)
EP 12166789 A 20120504; CN 201310161745 A 20130506; US 201313886479 A 20130503