Here, the team at Rongfa Machinery—a manufacturer of non-woven fabric equipment—will explain the applications, working principles, and features of mesh-belt dryers.

Dryer Applications:

The belt dryer is a continuous-operation, through-flow drying system designed for materials in flake, strip, or granular form that possess good air permeability. It is particularly well-suited for materials with high moisture content that are heat-sensitive or cannot withstand high temperatures, such as dehydrated vegetables, meats, and prepared traditional Chinese medicine (TCM) slices.

Key Features of the Dryer:

This series of dryers offers advantages such as rapid drying, high evaporation intensity, superior product quality, a compact footprint, low labor intensity, and high output. It is capable of drying paste-like materials (such as dewatered filter cakes) provided they are first granulated or formed into rods.

The mesh-belt dryer primarily consists of a drive system, frame, insulation layer, hot-air circulation and moisture exhaust system, and an electrical control system. The unit operates smoothly with low noise and features automatic temperature control; it is easy to install and maintain, and is suitable for drying a wide variety of materials. It complies with GMP standards.

Working Principle:

Materials are distributed by a feeder and spread evenly onto a continuously moving mesh belt, which is driven by a chain to move slowly through the drying chamber. Driven by a centrifugal fan, hot air circulates in a laminar flow pattern across the material layers within the chamber, passing through heat exchangers, convection walls, and air ducts. The hot, dry air absorbs moisture from the material and transforms into warm, humid air, which is then exhausted outdoors. As moisture is removed, the material gradually dries; the speed of the mesh belt can be adjusted according to the material's moisture content, and the dried finished product is continuously discharged into the collection unit.

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