| 摘要 |
The container has a removable container lid (1), and a filter unit exchanging gas in a wall area (4) that is provided with gas exchange openings (5). The filter unit is held pressably against the inner side of the wall area by a pressing disk. The pressing disk is pressed against the wall area by a spring washer. The washer is provided with right connecting elements, which are brought in internal and external contact with right closure elements of a frame element. The washer is rotatable around a common central rotation axis of the pressing disk and opposite to the pressing disk. |
