| 摘要 |
FIELD: heat treatment of different kinds of grain; treatment of forage grain and production of edible grain products. ^ SUBSTANCE: proposed plant for heat treatment of grain includes heat-insulated chamber with conveyer arranged inside it and used for transfer of material being treated, heating unit with infra-red radiators and reflecting shields located above conveyer belt, individual shields having parabolic reflecting surface which is described by equation of parabola in canonical form: y2=2px, where y and x are present coordinates and p is focal parameter of parabola. Each radiator is located in focal plane of parabolic surface of individual reflecting shield. Parabolic surfaces of each subsequent and previous reflecting shields are geometrically similar; coefficient of geometric similarity is within 1.1-1.3. Ratio of focal parameters of parabolic surfaces of each subsequent and previous reflecting shields is equal to 1:5 to 1:4; ratio of distance between focus and vertex of parabolic surface to its focal parameter ranges from 1:2 to 1:3. Plant is provided with thyristor unit for control of spectral composition and power of infra-red radiation in accordance with varying thermo-radiation characteristics of article being treated. ^ EFFECT: increased productivity; reduced power requirements; improved quality of finished product. ^ 2 dwg |
