Ring hammer type fine crusher with foreign material collection function

A ring hammer type fine crusher with a foreign material collection function relates to the technical field of comminuting equipment, in particular to the structural technical field of impact type crushers. A feeding opening is arranged above a case, a discharge opening is arranged below the case, a rotating spindle is transversely disposed inside the case, rotating arms are symmetrically fixedly connected on the rotating spindle, outer ends of the rotating arms are respectively connected with impact shafts which are axially parallel to the rotating spindle, each impact shaft is connected with an impact hammer capable of rotating freely, a reaction plate is arranged on the outer periphery of each impact hammer, and a foreign material collecting plate is disposed on one side of the rotating spindle far away from the feeding opening. By aid of rotation of the rotating spindle, the impact hammers not only crush materials, but also can throw large blocks of hard objects entering the feeding opening so as to lead t