| 摘要 |
A device for drawing off granular or powdery material from sacks includes a sealable draw-off pipe 3 which is connected to a ring 4 on the opposite side of which there is disposed a curved engagement member 5, which at one end is joined to the ring 4 and has its opposite end free to be stuck through the wall of the sack, the ring 4, following rotation together with the stuck-through engagement member 5 present on the inner side of the sack wall, being connectable to the said engagement member by means of a screw member 6 penetrating the sack wall. An opening can thereafter be cut out in the sack wall within the region delimited by the ring 4. <IMAGE> |
