Product Trays/Conveyor

The product trays/conveyor is a critical component of industrial-scale food dehydrators, consisting of trays or conveyor belts that hold and move food products through controlled drying environments. This system ensures uniform exposure to airflow and temperature, facilitating efficient moisture removal while maintaining product integrity during continuous or batch processing operations. It is designed for food manufacturing applications where consistent drying quality and hygienic operation are paramount.

The system is available in configurations using food-grade stainless steel, aluminum alloy, or polymer mesh, with material grades such as 304 or 316L (per ASTM A240) for corrosive environments. Surface roughness is maintained at ≤0.8 μm Ra (ISO 4287) to meet hygienic standards. Standard tray widths range from 600 to 1200 mm, and lengths from 800 to 2000 mm, with load capacities per tray between 20 and 50 kg depending on product density. Conveyor speed is adjustable from 0.1 to 2.0 m/min to optimize drying time. Operating temperature ranges from -10 to 120°C, with relative humidity resistance up to 95% (non-condensing). Drive power is between 0.75 and 5.5 kW, and electrical supply is three-phase, 380–480 V AC (IEC 60038). Ingress protection is rated IP54 to IP65 (IEC 60529) for washdown environments. Overall dimensions are customizable per line, ranging from 3000–15000 mm in length, 1000–2500 mm in width, and 1500–3000 mm in height, with system weight between 500 and 5000 kg depending on configuration.

Selection of the appropriate tray or conveyor system requires verification of model-specific parameters with the legal manufacturer or supplier, including load capacity, speed range, and material compatibility with the food product and cleaning agents. The system interfaces with dehydrator controls for speed adjustment and monitoring. Regular maintenance includes inspection of belts, bearings, and drive components, with attention to wear and alignment. Failure boundaries include exceeding temperature or humidity limits, overloading trays, or operating at speeds outside the specified range, which can lead to product damage or system malfunction. Always confirm that the chosen configuration meets the required standards and operational parameters for your specific application.

Food products are loaded onto trays or conveyor belts which then transport them through sequential drying zones with controlled temperature, humidity, and airflow. The system maintains consistent product positioning and spacing to ensure even drying, with adjustable speed controls to optimize residence time based on product characteristics and moisture content targets. The trays or belts are driven by a motorized system with adjustable speed, allowing operators to match drying time to product requirements. The design ensures uniform exposure to drying conditions, preventing over-drying or under-drying. The system operates continuously or in batch mode, depending on the dehydrator configuration.