Improved disc and sludge disc dryer applying same

The utility model belongs to the technical field of drying machine application, and particularly discloses an improved disc which comprises an installation fixing part, a rotary stirring part and a stirring part installation part. The rotary stirring part is arranged on the outer wall of the edge of the mounting and fixing part, and the stirring part mounting part is arranged in the rotary stirring part; the mounting and fixing part is used for being mounted on a rotary driving part, and the stirring part mounting part is used for mounting a stirring part. The improved disc has the advantages that the disc is integrally manufactured in a spinning forming mode, manufacturing is convenient, and cost is saved; 2, the workload of welding and processing is saved, and the risk of welding leakage is also reduced; and 3, a mounting fixing part, a rotary stirring part, a stirring part mounting part, a circular fixing through groove and a positioning through groove which are reasonably designed can be firmly assembled