| 摘要 |
<p>A mixing or pumping device in which a plurality of rotor blades (13) are mounted on a rotor shaft (7) and disposed within a housing (3). The rotor shaft is supported in a first bearing (35,37) adjacent to the housing and a second bearing (39,41) which is located between the first bearing and an end of the shaft which, in use, is coupled to a motor for driving the shaft. Conduit means (51) extend from the housing to the second bearing, the conduit means including a section (43) which bypasses the first bearing. In use, material is drawn into the housing in an axial direction and forced radially outwardly by the rotating blades. Other material within the housing is forced along the conduit means to the second bearing, where it serves as a lubricant.</p> |
