Vegetable mesh belt dryer equipment composed of several independent unit section, each unit includes the circulation fan, heating devices, alone or utility of fresh air into the system and exhaust system. Therefore, the number of drying medium, temperature, humidity and the operating parameters, such as exhaust gas circulation, can be independently controlled, so as to guarantee the reliability of the work and the optimization of operating conditions. Belt drying machine operation is flexible, wet material feeding, drying process is carried out in a completely sealed the casing, a high degree of automation, good working conditions, to avoid the dust leakage. Belt drier was dry material along with the mobile conveyor belt, the relative position between the material particles is fixed, the drying time are basically the same. Requirement for belt drying machine is suitable for drying material the color change or dry uniform moisture content of materials.
Second, the structure of belt drier according to different combinations can be divided into three types, namely, single-stage, multistage and multilayer belt drier.
(a) single stage belt drying machine is dry material by the feed end through a feeding device is evenly distributed to the conveyor belt, conveyor belt is usually made with perforated stainless steel sheet, driven by motor through a gearbox. The most commonly used medium is hot air drying. With air cycle machine by external drawn in by the air filter, and after heating heater, blow through by the conveyor belt on the lower part of the vertical distribution board. In the hot air to flow through the material layer, material moisture evaporation, air humidifying, temperature is reduced, part of the wet air eduction body, others in the circulation fan inlet mixed with fresh air recirculation. After drying of the product, by direct contact with the outside air or other medium at low temperature after cooling, by the discharge outlet.
(2) the multistage belt drier multistage belt drying machine is essentially by several machines (up to four) in series with a single stage belt drying machine, its operating principle is the same as the single stage belt drying machine. Early drying shrinkage material, some vegetables, such as on the conveyor belt accumulation is thicker, will lead to compaction and affect the drying medium passing through, multistage belt drying machine can be used at this time, the total production capacity of generating unit. Multilayer belt drier
(3) it is made of many sets of single stage belt drier from top to bottom, in series in a sealed in drying chamber, layer number of up to 15, commonly 3-5 layers. The last layer or layers of conveying speed is low, make the material layer thickening, this can make the most of the drying medium flows through the first few layer thinner material, in order to improve the overall efficiency of drying. Layer between the diaphragm to the directional flow of dry medium, uniform material drying. Multilayer belt drier by insulating chassis, transmission chain mesh belt, chain tensioning device, the platoon is wet system, transmission device, adhering to the conveyor belt, indirect heating device and other parts. The bottom out for conveyor belt out housing exit 2, 3 m, a space set aside for workers in the process of sorting out dry deformation and imperfect products.
Technical parameters:

Note: as shown in table dry strength according to the drying temperature, material thickness and the residence time of material.