| 摘要 |
<p>A screw feeder is provided having a lower screw shaft (2) and an upper drive shaft (1) which are detachably connected to each other. The drive shaft (1) includes an outer tubular member, with an inner, generally solid, connecting member (5) positioned within the drive shaft (1). The lower end of the tubular member of the drive shaft (1) includes a generally tapered recess (19) which is adapted to mate with a lower end of the connecting rod (5) positioned therein. The lower end of the connecting rod (5) has a plurality of generally axially arranged slits (5c) which make the lower rod end flexible, with the lower end having a generally frustoconical outer surface (5d). The upper end (2a) of the screw shaft (2) is adapted to be attached to the lower end of the drive shaft (1) by at least one annular member (1c,2b) which engages one of the shafts. The annular member (1c,2b) has two inwardly protruding pins (7d), with the lower end of the drive shaft (1). <IMAGE></p> |
