EP 1601875 A1 20051207 - ECCENTRIC SCREW PUMP
Title (en)
ECCENTRIC SCREW PUMP
Title (de)
EXZENTERSCHNECKENPUMPE
Title (fr)
POMPE A VIS SANS FIN EXCENTRIQUE
Publication
Application
Priority
- DE 2004000538 W 20040311
- DE 20304292 U 20030312
Abstract (en)
[origin: WO2004081385A1] The invention relates to an eccentric screw pump (1) comprising a stator (2) and a rotor (3) between which the material, which is to be transported, is displaced when the rotor (3) is rotated in the stator (2) from an inlet area (4) on the suction side to a discharge area (5) on the pressure side. Said pump comprises a rotor head part (7) which closes the pressure-side discharge area (5) and which is fixed to the front (6) of the rotor (3), rotating therewith. Said rotor head part comprises at least one recess (8) which transverses the head part and which is disposed in the rotor head part (7) in relation to the rotor surface (6) which is to be maintained, such that the recess (8), which rotates at the same time as the rotor (3) in the direction of conveyance (10), opens up the pressure volume area (11, 11') and a recess-free rotor head part area (13) keeps the opposite-lying suction volume area (12, 12') sealed while the pressure volume area (12, 12') is opened.
IPC 1-7
IPC 8 full level
F04C 2/107 (2006.01)
CPC (source: EP)
F04C 2/1073 (2013.01)
Citation (search report)
See references of WO 2004081385A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004081385 A1 20040923; WO 2004081385 A8 20060216; AT E332443 T1 20060715; CN 100429402 C 20081029; CN 1791750 A 20060621; DE 112004000856 D2 20060202; DE 20304292 U1 20030515; DE 502004000924 D1 20060817; EP 1601875 A1 20051207; EP 1601875 B1 20060705; ES 2268641 T3 20070316
DOCDB simple family (application)
DE 2004000538 W 20040311; AT 04719362 T 20040311; CN 200480010646 A 20040311; DE 112004000856 T 20040311; DE 20304292 U 20030312; DE 502004000924 T 20040311; EP 04719362 A 20040311; ES 04719362 T 20040311