| 摘要 |
Cover, consisting of an exterior crown (5) provided with a hole (6) and designed to be fixed in the usual manner onto the outer edge (3) of the vat. In addition, the cover comprises a rigid inner capsule (7) for blocking said hole. When is its final position, said inner capsule (7), attached to the crown (5) by hooked locking devices (20, 24), engaging elastically. The inner capsule also has a provisional position, in wich it is placed in a movable position across the hole (catch 17), in an inverted position, for example. It can thus be easily removed, then placed in its final position in an automatic vat filling installation. The cover is made preferably of a synthetic substance, and has application to the conditioning of bulk goods, particularly grains, powders or pastes. |
