rotary cleaning sieve ★ The sieve runs with three tracks at the same time, and 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 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 there is no trouble in 2 or 3 years.