This machine can put the block or granule materials from the material storage into the charging device in time evenly and continuously. It can realize even feeding for crushers in sandstone production line and make rough screening of materials. It is widely applied in combined operation of crushing and screening in the industries like metallurgy, mine, mine selection, building materials, chemicals, etc.

Traits：stable vibrating, reliable works, long-life; to adjust the excitation force and change and control the flow any time stably and conveniently; the vibrating motor, as the excitation source, low noise, small power consumption, good adjusting performance, no material splash, simple structure, reliable running, convenient installation, light weight, small size, easy maintenance, to prevent dust pollution(the enclosed type machine).