| 摘要 |
The device has an inner wall (104) comprising a cone (112), that is coaxial with a cone frustum (106) of outer wall (102) and includes two steps (150, 152) oriented towards an outer wall (102), where top of the cone is oriented towards a height. The frustum (106) is provided with steps (146) oriented towards the wall (104). The inner wall and/or the outer wall are moved around an axis (126). The outer wall has a skirt (108) in its lower part. The inner wall has a skirt (114) in its lower part, where the skirts are opposite to each other and form a passage (118) for clipped shells. |
