Efficient cotton blending machine

The utility model discloses an efficient cotton blending machine. The device comprises a cotton assorting chamber and a cotton blending chamber, the cotton assorting chamber is positioned above the cotton blending chamber; a cotton assorting pipe connected with the cotton carding chamber is arranged above the cotton assorting chamber; the cotton assorting pipe is a pipeline coiled in a snake shape; the cotton assorting chamber comprises a plurality of cotton storage grids which are distributed in parallel; wherein the cotton storage grid is communicated with the cotton blending chamber, a discharge port corresponding to the cotton storage grid in position is formed in the cotton distribution pipe, the head end of the cotton distribution pipe is communicated with the tail end of the cottondistribution chamber, the tail end of the cotton distribution pipe is communicated with the head end of the cotton distribution chamber, and a photoelectric detector is arranged above the cotton storage grid at the head end o