Feed sieving device

The utility model belongs to the technical field of sieving equipment and provides a feed sieving device. The feed sieving device comprises a sieve, a finished product bin and a feeding port communicated with the sieve, the sieve is provided with a bottom tailing discharging port and a finished product discharging port communicated with the finished product bin, and the bottom tailing discharging port is connected with first discharging hoppers. The feed sieving device has the advantages that bidirectional three-way discharging pipe bundles are connected to the first discharging hoppers and are provided with first discharging pipes, second discharging pipes and feeding pipes, one end of each feeding pipe is communicated with the corresponding first discharging hopper while the other end of the feeding pipe is communicated with the corresponding first discharging pipe, and one end of each second discharging pipe is communicated with the corresponding feeding pipe while the other end of the second discharging pipe is communicated with the finished product bin, so that tailings capable of entering the tail of the finished product bin do not return to a machine repeatedly, and further, the technical problems of resource waste, production yield reduction and production cost increase due to the fact that the tailings sieved out by a tail sieving passage in the feed sieving device need to return to the machine for reprocessing in the prior art are solved.