EP 0991864 A1 20000412 - PISTON PUMP FOR THICK MATTER
Title (en)
PISTON PUMP FOR THICK MATTER
Title (de)
KOLBENPUMPE FÜR DICKSTOFFE
Title (fr)
POMPE A PISTON POUR MATIERES CONSISTANTES
Publication
Application
Priority
- DE 19727103 A 19970626
- EP 9803403 W 19980606
Abstract (en)
[origin: DE19727103A1] The invention relates to a piston pump for thick matter such as concrete, sewage sludge, excavated tunnel material and similar. The inventive piston pump has at least one hydraulically operated pump cylinder (10, 12). The pump piston (30) of said pump cylinder (10, 12) is connected to the piston (38) of a hydraulic drive cylinder (26, 28) by a common piston rod (34). A water box (42) is situated between the pump cylinders (10, 12) and the drive cylinders (26, 28), the piston rod (34) passing through said water box (42) for cleaning purposes. Said water box (42) has an assembly opening (44) at the top end, said opening being accessible from above, and a closeable water outlet nozzle (66) located at the bottom end. The water box also has an assembly opening located at the bottom end for easier assembly. Said bottom-end assembly opening (54) can be closed in such a way that it is liquid-tight by means of a removable base plate (52).
IPC 1-7
IPC 8 full level
F04B 15/02 (2006.01)
CPC (source: EP US)
F04B 15/02 (2013.01 - EP US); Y10S 417/90 (2013.01 - EP US)
Citation (search report)
See references of WO 9900599A1
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 19727103 A1 19990107; DE 59803633 D1 20020508; EP 0991864 A1 20000412; EP 0991864 B1 20020403; ES 2173605 T3 20021016; US 6116865 A 20000912; WO 9900599 A1 19990107
DOCDB simple family (application)
DE 19727103 A 19970626; DE 59803633 T 19980606; EP 9803403 W 19980606; EP 98937452 A 19980606; ES 98937452 T 19980606; US 31912599 A 19990601