EP 2179177 A1 20100428 - HIGH PRESSURE DOUBLE MEMBRANE PUMP AND MEMBRANE ELEMENT FOR SUCH A PUMP
Title (en)
HIGH PRESSURE DOUBLE MEMBRANE PUMP AND MEMBRANE ELEMENT FOR SUCH A PUMP
Title (de)
HOCHDRUCK-DOPPELMEMBRANPUMPE UND MEMBRANELEMENT FUER EINE SOLCHE PUMPE
Title (fr)
POMPE À DOUBLE MEMBRANE À HAUTE PRESSION, ET ÉLÉMENT FORMANT MEMBRANE POUR UNE TELLE POMPE
Publication
Application
Priority
- EP 2008061052 W 20080822
- DE 102007039964 A 20070823
Abstract (en)
[origin: WO2009024619A1] A high pressure double membrane pump has a central housing (3), two cylindrical pump chambers (7,8), a coupling rod (4) which moves back and forth when the pump is in operation and which has a pump piston (9), two membranes which divide each of the pump chambers (7,8) into a product chamber (11,12) and a compressed air chamber (1,2) with changing volumes of which the membranes have a peripherally mounted membrane body (15). In the central area of the membrane body (15) a rigid implant body (17) is embedded which is equipped with a dog (18) which is connected to one end of the coupling rod (4), and a pneumatic control unit for the alternating impinging of compressed air upon the compressed air chambers. In the area of the compressed air chambers (1,2) a rigid supporting ring (20) is pushed onto the dog (18) between the end of the coupling rod (4) and the inner side of the membrane (5). The diameter of said supporting ring is between 50% and 95% of the diameter of the working surface of the membrane (5), and the periphery thereof is formed as a rounded shoulder (21) facing away from the membrane body (15).
IPC 8 full level
F04B 9/133 (2006.01); F04B 43/00 (2006.01); F04B 43/073 (2006.01)
CPC (source: EP US)
F04B 9/133 (2013.01 - EP US); F04B 43/0054 (2013.01 - EP US); F04B 43/0736 (2013.01 - EP US)
Citation (search report)
See references of WO 2009024619A1
Citation (examination)
US 5927954 A 19990727 - KENNEDY DENNIS E [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
DE 102007039964 A1 20090226; DE 102007039964 B4 20110622; DE 202008017904 U1 20101111; EP 2179177 A1 20100428; US 2011229352 A1 20110922; WO 2009024619 A1 20090226; WO 2009024619 A4 20090423
DOCDB simple family (application)
DE 102007039964 A 20070823; DE 202008017904 U 20080822; EP 08803172 A 20080822; EP 2008061052 W 20080822; US 67445308 A 20080822