Cotton boll skin/lint separator

The utility model relates to the improvement of the structure of an existing feed grinder, which is a special apparatus utilized to break hulls of cottonseeds to realize the separation between cotton hulls and cotton lint which remains on the hulls in order to extract short cotton lint. The utility model mainly comprises a machine casing, a rotor, a dental plate, a sieve, etc. The utility model is mainly characterized in that a shaft vent hole with guide vanes is arranged at a position which is near to the center of the rotor; an axial lint sucking hole and an axial lint sucking pipe which is connected with the axial lint sucking hole are arranged on the machine casing; the axial lint sucking hole and the axial lint sucking pipe correspond to an axial vent hole of the rotor; strip-shaped holes, long edges of which are vertical with the axial cord of the rotor are evenly arranged on the sieve. The utility model has the advantages that the reasonable structure is realized, the breaking quality of the cotton bolls is good, and the bolls and the lint are separated from each other completely.