CRUSHER Russian patent published in 1995 - IPC

FIELD: technologies used in grinding and crushing products. SUBSTANCE: crusher has grinding chamber 1 with charging (2) and discharging devices. Inside the chamber, there is working member 4 in the form of arc-bent coil spiral one end of which is connected to the drive. In the hollow of the spiral, a pre-crusher is mounted and shaped like a curve cutter (11). Pre-crushers can be made of flexible material in the form of an arc or conical spiral and composed of several bands. The working member can be provided with additional spiral of closely wound coils. EFFECT: higher efficiency, simpler design. 7 cl, 5 dwg