| 摘要 |
<p>The present invention relates to a crusher with a circular chamber, of the type comprising a frame, a grinding block (2) fixed on a shaft (3) of vertical axis, and a grinding ring (4) fixed about the block and having the same axis, the grinding of the materials introduced between these two parts being effected by the movement of the block with respect to the grinding ring, characterised by: a drive means producing a vertical oscillatory motion, linked to the shaft (3) in order to drive it in such a motion, a guide means (5) for the shaft (3) in its vertical oscillatory motion. <IMAGE></p> |
