EP 0224764 B1 19890503 - AXIAL THRUST COMPENSATION DEVICE FOR FLUID PUMPS
Title (en)
AXIAL THRUST COMPENSATION DEVICE FOR FLUID PUMPS
Publication
Application
Priority
CH 506685 A 19851127
Abstract (en)
1. An axial-thrust equalizer (5, 6) for a liquid pump, the equalizer mainly comprising a stationary sleeve (5) and, rotating therein, a dummy piston (6) rigidly secured to the pump rotor shaft, characterized in that the sleeve (5) is formed with ducts (51, 52) for guiding out of the rotor side chamber (31) contiguous with the equalizer a flow (Q) of working liquid moving towards the dummy piston (6), the flow (Q) dividing, at the place (53) where the ducts (51, 52) join the gap (56) between the sleeve (5) and the dummy piston (6), into two flows (Q1 , Q2 ) moving towards the two gap ends.
IPC 1-7
IPC 8 full level
F01D 3/04 (2006.01); F01D 25/04 (2006.01)
CPC (source: EP US)
F01D 3/04 (2013.01 - EP US); F01D 25/04 (2013.01 - EP US); F04D 29/0416 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT NL SE
DOCDB simple family (publication)
EP 0224764 A1 19870610; EP 0224764 B1 19890503; CH 669241 A5 19890228; DE 3663165 D1 19890608; FI 864381 A0 19861028; FI 864381 A 19870528; FI 93259 B 19941130; FI 93259 C 19950310; US 4892459 A 19900109
DOCDB simple family (application)
EP 86115684 A 19861112; CH 506685 A 19851127; DE 3663165 T 19861112; FI 864381 A 19861028; US 28361288 A 19881213