| 摘要 |
A loading spout (1) for free flowing particulate material, said spout comprising an inner tube (2, 3) and a shorter outer tube (13) mounted through bearing means (6) so as to be rotatable about and concentric with the inner tube (2, 3) with the inner tube (2, 3) extending beyond both ends of the outer tube (13), drive means (5, 10, 12) to rotate the outer tube (13), at least one helical flight (17) on the outer tube (13) where the flight comprises an outer flight portion (20) extending outwardly from the outer tube (13) and an inner flight portion (18) extending across the annular space (19) between the inner and outer tubes and terminating closely adjacent the outside of the inner tube, and discharge openings (21) in the wall of the inner tube within the outer tube whereby material can exit the inner tube into said annular space into the path of the flight inner portion (18). |
