1. It is simple in structure and convenient to operate and repair. 2. With a v-belt drive, it can adjust the main axle speed according to the physical property and degree of agglomeration of the materials, which can not only achieve an ideal crushing effect, but also minimize power consumption. 3. The drum is lined with a rubber plate, which is resistant to corrosion and bonding. 4. The equipment can operate stably with a long service life.