| 摘要 |
FIELD: heating, drying.SUBSTANCE: invention refers to agricultural engineering, and namely to grain drying devices. The grain drying device includes a cylindrical casing, the outer surface of which is coated with a heat-insulating material layer, a loading bunker, an unloading opening, a transporting working element, heating elements, a fan and an air pipeline. The casing is made in the form of a horizontally located cylinder divided into two parts along a horizontal symmetry axis. Upper part of the casing is made from heat reflecting material and hinged above lower part of the casing with possibility of being fixed in the operating position. The transporting working element is made in the form of a screw with a hollow perforated shaft; screw perforation is made between the loading bunker and the unloading opening with the diameter of openings, which does not exceed minimum grain size. Screw turns have gaps. The casing lower part and the screw are made from heat-conducting material. Heating elements are located on outer surface of the casing lower part under the heat-insulating material layer. Along the casing symmetry axis, in the screw shaft cavity there installed is a fixed horizontal plate throughout the casing length. The air pipeline with a fan are connected to internal lower cavity of the screw shaft, which is restricted with a plate and inner surface of the screw shaft, and a heater is installed in the air pipeline.EFFECT: reducing energy costs for moisture evaporation process and simplifying maintenance of the device.2 dwg |
