Classifying cyclone

The utility model relates to a classifying cyclone. The classifying cyclone comprises a cyclone body, a collection chamber and an underflow opening. The cyclone body comprises a cylindrical pipe section, a conical pipe section and a feed port, wherein a first overflow pipe and a second overflow pipe are concentrically arranged in the cylindrical pipe section, and the second overflow pipe is positioned in the first overflow pipe; the first overflow pipe is hermetically connected with the collection chamber, and the second overflow pipe is hermetically connected with a second material discharge pipe; one end of the conical pipe section is hermetically connected with the lower surface of the cylindrical pipe section, and the other end of the conical pipe section is hermetically connected with the underflow opening; and the feed port is formed on the side surface of the cylindrical pipe section, so that the separation of more than two types of materials is realized, and requirements of production are met.