Using the Similarity Theory in Designing Vibroconveyor Dryer for Grain

The article describes the developed vibration conveyor dryer. This device takes advantage of the flow form while functioning, provides automatic production, realizes intensive infrared action in the fluidized-product layer, and creates energy-saving and constant flow for the technological load. The decomposition of the product mass under the influence of alternating loads leads to a reduction of internal friction and viscosity in the technological environment, which allows for increasing the heat transfer coefficient as much as possible. The process of mixing friable particles of products during their transportation in the working zone by a wave propulsion engine provides even heat treatment, which eliminates overheating of the surface layer under the action of energy-intensive infrared irradiation. This complex technological process is determined by certain factors: the coefficient of mass return, the mass of products, the speed of the conveyor belt, the size of the raw material particles, the moisture content, the coefficient of thermal conductivity, the volume performance of the process for the removed moisture, the specific temperature of the vapor, the amplitude of the oscillation of the wave propeller. It allows recommending the regime parameters and the design series of projected thermo-radiation dryers with vibration-wave transport of products when varying the main influence factors.