Structure of mesh belt dryer

Mesh belt dryer is a continuous drying equipment for mass production, which is used for drying flaky, strip, granular and partial paste materials with good air permeability It is especially suitable for dehydrated vegetables, Chinese herbal pieces and other materials with high moisture content and heat sensitivity It has the advantages of high drying rate, high evaporation intensity and good product quality (1) single stage belt dryer: the dried materials are evenly distributed on the conveyor belt from the feeding end to the feeding device The conveyor belt is usually made of perforated stainless steel sheet, driven by the motor through the gearbox, which can adjust the speed The drying cabinet is usually divided into several units to control operation parameters and optimize operation independently There is an isolation section between the drying sections, where there is no drying medium circulation (2) multistage belt dryer: the multistage belt dryer is essentially composed of several single-stage belt dryers in series, and its operation principle is the same as that of single-stage belt dryer (3) multi layer belt dryer: the multi-layer belt dryer is usually used in the situation that the drying speed is low and the drying time is long, and the process operating conditions can be kept constant during the whole drying process A partition board is arranged between layers to organize the directional flow of drying medium so as to make the material dry evenly The multi-layer belt dryer is widely used for drying grain materials due to its simple structure and less floor space However, due to multiple loading and unloading during the operation, it is not suitable for drying the materials that are easy to adhere to the conveyor belt and are not allowed to break (4) impact belt dryer: the impact belt dryer is suitable for drying the surface coating of fabrics, tobacco leaves, base materials and other sheet materials Impact belt conveyor usually consists of two conveyor belts The impact belt conveyor can be divided into unit sections for independent control After the drying medium is humidified, part of it is discharged, and the other part is returned to the fresh drying medium for circulation.