| 摘要 |
A kneader/stirrer is provided which has a high self-cleaning ability and can be operated for a long period of time. The kneader/stirrer includes two rotary shafts (4) extending parallel to each other in the processing chamber (2), first regular triangular impellers (3) mounted to one of the rotary shafts (4) so as to be arranged in the axial direction of the rotary shaft (4), and second regular triangular impellers (3) mounted to the other rotary shaft (4) at the same axial positions as the respective first impellers (3). The impellers (3) are fixed to the respective rotary shafts (4) at points offset from the centers of the respective impellers (3) in a predetermined direction by a predetermined distance such that when the two rotary shafts (4) rotate in the same direction at the same speed, each pair of first and second impellers (3) are eccentrically pivoted, with one apex of one of the pair of impellers kept in contact with or in close proximity to the contour of the other impeller, thereby scraping off polycondensation resin (material to be processed) adhered to the other impeller, while scraping off resin adhered to the inner wall of the processing chamber (2) with one of the apexes nearest to the inner wall. Thus, this device has a higher self-cleaning ability than conventional devices using disk-shaped impellers, and thus can be stably operated for a long period of time. |
