EP 0314819 B1 19911121 - TWO-SHAFT VACUUM PUMP WITH AT LEAST ONE CONNECTING PASSAGE BETWEEN THE BEARING SPACES
Title (en)
TWO-SHAFT VACUUM PUMP WITH AT LEAST ONE CONNECTING PASSAGE BETWEEN THE BEARING SPACES
Publication
Application
Priority
EP 87116069 A 19871031
Abstract (en)
[origin: EP0314819A1] The invention relates to a two-shaft pump (1) with a pump chamber housing ring (2) with two laterally affixed bearing plates (3, 4), each with a pump chamber seal (23 and 24) between the front faces of the housing ring (2) and the bearing plates (3 and 4), with storage chamber housings (13, 14) externally flange-mounted on the bearing plates and with at least one pipe (31 and 37) passing through the bearing plates and joining the storage chambers (11, 12) to one another; in order to prevent oil getting into the pump chamber in the event of a leak in the connecting pipe, it is proposed to arrange the passages for the connecting pipe (31 and 37) through the bearing plates (3, 4) outside the pump chamber seals (23, 24). <IMAGE>
IPC 1-7
IPC 8 full level
F04C 27/00 (2006.01); F04C 29/00 (2006.01)
CPC (source: EP)
F04C 27/009 (2013.01); F04C 29/0028 (2013.01)
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
EP 0314819 A1 19890510; EP 0314819 B1 19911121; DE 3774711 D1 19920102
DOCDB simple family (application)
EP 87116069 A 19871031; DE 3774711 T 19871031