| 摘要 |
A grinding apparatus (100) comprises a receptacle (110), a grinding element (120) and a drive means. The receptacle (110) has a receptacle inner wall (111) defining a receptacle cavity (112). The receptacle inner wall (111) is in the general form of a surface of a revolution extending about a central vertically extending receptacle axis (A). The receptacle (110) is rotatable about the receptacle axis (A). The grinding element (120) has a grinding element outer wall (121) in the general form of a surface of revolution extending about a central vertically extending grinding element axis (B). The grinding element axis (B) is generally parallel to the receptacle axis (A) and offset from the receptacle axis (A) by an offset distance (D). The receptacle inner wall (111) and grinding element outer wall (121) together define a grinding chamber (116) within the receptacle cavity (112). The grinding chamber (116) has a generally annular cross- section. The drive means is adapted to rotationally drive the grinding element (120) about the grinding element axis (B) and/or to rotationally drive the receptacle (110) about the receptacle axis (A). The offset distance (D) may be selectively adjustable. |
