| 摘要 |
Device for extracting granular material from a tank (1) that is open at the bottom comprising, near its base (6) and facing the opening of the tank (1), a support grating (5) mounted on a frame (3), the said device comprising a member (8) for destroying the toes of the vault, capable of sweeping the surface of the said grating positioned underneath the said tank while remaining above the said grating (5), and at least one substantially vertical tube (15) passing through the mass of granular material and supported, at its lower part, by a lower support (13) and, at its upper part, by an upper support (16), each of the said supports being borne by the said tank (1) or the said frame (3), characterized in that at least one of the said supports (13, 16) can be moved by an actuator (23) in a substantially horizontal plane so as to alter the orientation of the said tube with respect to the mass of the said granular materials. |
