This machine is the second cleaner in the mill which can remove the
middle and light ***** sieve runs with three tracks at the same
time, the right and left swaying near the inlet makes for the
material to be divided evenly. The to-and-fro move of the middle
sieve and the rotary move of the outlet makes for the
classification. The airtight sieve with front and back dust
collecting device raises little dust suspended with four steel
wires, the sieve runs stably, and longer endurance.