the materials are uniformly put on the mesh-belt by material feeder. The mesh-belt uses generally 12-60 mesh stainless steel wire net and it is drawn and moved inside the vegetable drier by a transmission device. The drier is composed of several units. For each unit, hot air is circulated separately. The drying process: hot air passes through the mesh-belt covered with special moisture from top to bottom or from bottom to top, and this will complete the heat and mass transfer process. The top air pipe is connected with fan, one part of air is circulated, some exhausted gas is discharged with a special moisture elimination fan, and other waste gas is controlled through an adjustment valve. The top and bottom circulation units can be freely equipped according to customer’s requirement. The unit number can be selected according to the demand.
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