| 摘要 |
The mixer (1) is of the kind composed of a container (2) which is internally provided with one or more vertical screws (9) welded to a shaft (4) which rotates about end pins (5,6) fixed to the container (2). The improvements consist in a scraping element (12) which is fixed to one of the pins (5) and extends longitudinally flanking the shaft (4). Each scraping element (12) has a blade (14) which is rigidly associated therewith and scrapes the surface of the shaft (4) and blade (16) which is spaced from the surface. |
