Stone processing and crushing device

The invention discloses a stone processing and crushing device which comprises a shell. A partition plate is horizontally installed in the shell, the partition plate divides the interior of the shellinto an upper chamber and a lower chamber, a primary crushing mechanism is arranged in the upper chamber; and a secondary crushing mechanism is installed in the lower chamber, the secondary crushing mechanism is located under a crushing channel formed by a movable plate and a fixed plate, the secondary crushing mechanism is composed of two horizontally-arranged rollers, and several protrusions arearranged on the cylindrical surface of each roller. By means of the stone processing and crushing device, stone is subjected to graded crushing, the stone is firstly crushed from large pieces into small pieces by means of the primary crushing mechanism, and pre-rolling is provided for subsequent secondary crushing; on one hand, large impact on the device is reduced, and meanwhile, the stone can be crushed more thoroughly;