Activating retaining ring of cement grinding mill

The utility model discloses an activation retaining ring of a cement grinding mill, which mainly relates to the technical field of activation devices of cement grinding mills and comprises a support, a central cone component and a plurality of lining plates, the support is mounted in a second bin of the cement grinding mill, the outer circular surface of the support is tightly attached to the inner bin wall of the second bin of the cement grinding mill, and a ventilation opening is arranged in the middle of the support. The center cone assembly comprises a first center cone and a second center cone, the first center cone and the second center cone are detachably arranged on the front side face and the rear side face of the ventilation opening respectively, and the multiple lining plates are detachably arranged on the front side face of the support. According to the utility model, the bracket, the central cone component and the plurality of lining plates are arranged, and the plurality of lining plates are mat