Multilayer filter sieve for furfural production

The utility model discloses a furfural production multilayer filter sieve which comprises a rack and a sieve box, a feeding box is installed on one side of the top end of the rack, the feeding box is communicated with the sieve box, a rotary driving assembly is installed at the top end of the rack on one side of the feeding box, a crushing roller is installed at the output end of the rotary driving assembly, one end of the crushing roller extends out of the feeding box, and the other end of the crushing roller extends out of the sieve box. A rectangular hollow protective cover is installed on the outer wall of one side of the rack, a plurality of sets of filter sieve bodies are installed in the sieve box through a sliding guide structure, and the hole diameters of the multiple sets of filter sieve bodies are sequentially decreased. The multi-layer filtering and screening functions of furfural materials are achieved through the multiple sets of filtering sieve bodies with the hole diameters decreasing in seque