1. Adopt counter-flow cooling principle, pellet cooled fully and equally. 2. Special rotation homogenizing mechanism, materials distributed more equally and cooled more completely. 3. Use hydraulic system controls swing skid-plate discharging mechanism, discharging feed equally and fluently, the speed of discharging can be adjustable. 4.Suitable for bulk, lump, flake, pellet and many kinds of materials cooling, especially for big volume materials cooling for expanded feed and extruded feed.