EP 2002121 B1 20101013 - PISTON PUMP FOR THICK MATTER
Title (en)
PISTON PUMP FOR THICK MATTER
Title (de)
KOLBENPUMPE FÜR DICKSTOFFE
Title (fr)
POMPE A PISTON POUR SUBSTANCES EPAISSES
Publication
Application
Priority
- EP 2007002572 W 20070323
- DE 102006016083 A 20060404
Abstract (en)
[origin: US2010232996A1] The invention relates to a piston pump for thick matter, in particular for high-solids sewage sludge, coal sludge and concrete. The piston pump has at least one delivery cylinder (16) which contains a motor-driven or hydraulically driven delivery piston (20) and which has an orifice (12) which communicates alternately with the interior of a material feed container (10) and with a pressure delivery line (30) in a slide-controlled manner in accordance with the movement of the delivery piston (20). In order to significantly increase the degree of filling of the at least one delivery cylinder (16), an annular nozzle (32) opening into the delivery cylinder (16) in the region of the orifice (12) is provided, and this annular nozzle (32) is connected to an external pressure line (34) to which a lubricant can be admitted.
IPC 8 full level
F04B 15/02 (2006.01)
CPC (source: EP US)
F04B 15/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2010232996 A1 20100916; AT E484676 T1 20101015; CA 2647794 A1 20071018; CN 101410619 A 20090415; DE 102006016083 A1 20071011; DE 502007005346 D1 20101125; EP 2002121 A1 20081217; EP 2002121 B1 20101013; JP 2009532616 A 20090910; JP 5202512 B2 20130605; WO 2007115665 A1 20071018
DOCDB simple family (application)
US 22577507 A 20070323; AT 07723523 T 20070323; CA 2647794 A 20070323; CN 200780011201 A 20070323; DE 102006016083 A 20060404; DE 502007005346 T 20070323; EP 07723523 A 20070323; EP 2007002572 W 20070323; JP 2009503453 A 20070323