DRIER FOR LOOSE THERMALLY SENSITIVE MATERIALS ( VARIANTS ) Russian patent published in 2003 - IPC

FIELD: drying of thermally sensitive materials, grain in particular. SUBSTANCE: body of proposed drier houses perforated drum and central pipe, space between which is divided by special sections along generating lines into sectors with pockets ensuring movement of material along sectors while drum rotates. Ring and solid partitions corresponding to them in drum form heating and cooling zones. Drier also includes recirculation transportation facility coupling windows with pocket dampers across outlet from heating zone to pockets across its inlet by means of gravity flow conduits, control desk coupled through mechanism controlling dampers to dampers in windows, material and heat transfer agent loading and unloading branch pipes, window fans, air heaters. Directing plates are placed along generating lines of drum on internal side of body in symmetry with its vertical plane. Increased efficiency and quality of drying are achieved thanks to organization of directional intensive high-temperature contact of heat transfer agent with dried material and its recirculation in case of nonuniform or high moisture content. EFFECT: increased efficiency and quality of drying. 4 cl, 4 dwg