EP 0594548 A1 19940427 - A device for providing automatic circulation in a waste water pump.
Title (en)
A device for providing automatic circulation in a waste water pump.
Title (de)
Vorrichtung zur automatischen Zirkulation in Abwasserpumpstation.
Title (fr)
Dispositif pour circulation automatique dans une station de pompage des eaux usées.
Publication
Application
Priority
SE 9202759 A 19920924
Abstract (en)
The invention concerns a device for providing automatic circulation in waste water pump stations. On the pressure side the pump unit is provided with a valve (6) which during certain periods opens a connection between the pump and the pump station, thus obtaining a circulation in the latter. The valve (6) is opened and closed by a valve flap (18) which is controlled by the pump pressure. <IMAGE>
IPC 1-7
IPC 8 full level
E03F 5/22 (2006.01); F04D 15/00 (2006.01)
CPC (source: EP)
E03F 5/22 (2013.01); F04D 15/0011 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0594548 A1 19940427; EP 0594548 B1 19970813; DE 69313069 D1 19970918; DE 69313069 T2 19980219; SE 469844 B 19930927; SE 9202759 D0 19920924; SE 9202759 L 19930927
DOCDB simple family (application)
EP 93850173 A 19930908; DE 69313069 T 19930908; SE 9202759 A 19920924