| 摘要 |
A grinding device for grinding dried spices and herb, as well as other materials, is disclosed. In particular, the grinding device has a movable member which rotates about an axis and a fixed member. The movable member has a closure surface having a plurality of apertures and a grinding surface having a first series and a second series of ribs. The ribs of the second series have a pitch and a height which are less than those of the ribs of the first series. The fixed member has a complementary grinding surface. The complementary grinding surface has a first series of complementary ribs at the level of the first series of ribs of the movable member, and a second series of complementary ribs at the level of the second series of ribs of the movable member. The ribs of the second series of complementary ribs have a pitch and a height which are less than those of the ribs of the first series of complementary ribs. The complementary grinding surface has ribbed zones alternating with smooth zones.
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