EP 4359647 A1 20240501 - SCREW PUMP
Title (en)
SCREW PUMP
Title (de)
SCHRAUBENSPINDELPUMPE
Title (fr)
POMPE À BROCHES À VIS
Publication
Application
Priority
- DE 102021101111 A 20210120
- EP 2021084345 W 20211206
Abstract (en)
[origin: WO2022156949A1] The invention relates to a screw pump comprising a pump housing in which a pump spindle is rotatably mounted with the involvement of a hydrostatic thrust bearing for absorbing the axial thrust which is produced at the spindle during operation, the hydrostatic thrust bearing being formed by a housing-fixed bearing surface, against which an end-face, spindle-fixed bearing surface of the pump spindle is indirectly supported, by virtue of the fact that the housing-fixed bearing surface and the spindle-fixed bearing surface form a bearing gap therebetween, which bearing gap is fed, in its central region, with a pressure fluid which flows out through the bearing gap in the radial direction, preferably into the intake region, and the hydrostatic pressure of which counteracts the axial thrust.
IPC 8 full level
F01C 21/02 (2006.01); F01C 21/10 (2006.01); F04C 2/16 (2006.01); F04C 15/00 (2006.01)
CPC (source: EP US)
F01C 21/02 (2013.01 - EP); F01C 21/102 (2013.01 - EP US); F01C 21/108 (2013.01 - US); F04C 2/16 (2013.01 - EP US); F04C 15/0023 (2013.01 - US); F04C 15/0042 (2013.01 - EP US); F01C 21/108 (2013.01 - EP); F04C 2240/54 (2013.01 - EP US); F04C 2240/56 (2013.01 - EP); F04C 2240/60 (2013.01 - US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102021101111 A1 20220721; CN 117062965 A 20231114; EP 4359647 A1 20240501; US 2024084798 A1 20240314; WO 2022156949 A1 20220728
DOCDB simple family (application)
DE 102021101111 A 20210120; CN 202180095394 A 20211206; EP 2021084345 W 20211206; EP 21854744 A 20211206; US 202118262259 A 20211206