Industrial belt oven with a cooling system DR5

Industrial belt oven with a cooling system DR5

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The industrial multi-layer belt oven with integrated cooling conveyors is designed for continuous roasting and thermal processing of food products with subsequent controlled cooling before discharge. The system combines intensive hot-air roasting with a vertically stacked multi-level conveyor structure and integrated cooling zones in the lower section, ensuring uniform heat treatment of the product, energy efficient processing and continuous industrial-scale throughput.

5-level conveyor design with 3 heating sections and 2 cooling sections
Adjustable conveyor speed via a frequency converter with IP66 protection
Uniform roasting through controlled product movement and immediate gradual cooling
Separate PID temperature control for each heating section
Hygienic stainless steel construction for professional industrial food production

The multi-layer belt oven is a continuous industrial roasting system designed for thermal processing and controlled cooling of a wide range of bulk and pieced food products. The installation uses a vertical multi-conveyor arrangement consisting of five conveyor levels positioned above one another. The upper roasting section performs the thermal treatment of the product, while the lower conveyor levels are used for gradual cooling before unloading.

The product moves continuously through the oven on stainless steel mesh conveyors. During operation, the product passes through controlled roasting zones where heat is evenly distributed across the product layer. Each of the three heating zones is equipped with a separate PID temperature controller for accurate monitoring and stable control of the roasting temperature.

After roasting, the product automatically transitions to the lower cooling conveyors, where the temperature is gradually reduced before discharge. This helps stabilize the product structure, reduce surface overheating, and prepare the product for packaging or further processing.

The multi-level conveyor configuration allows a large processing area while maintaining a compact overall footprint. Product movement between conveyor levels additionally contributes to more uniform processing and redistribution of the product layer due to the product tumbling and turning over as it falls down to the next conveyor layer.

The system is suitable for continuous roasting, drying, and thermal treatment of products such as:

peanuts
almonds
hazelnuts
cashews
sunflower seeds
pumpkin seeds
sesame seeds
breadcrumbs
snack products
cereals
granola
coffee substitutes
spices
legumes
other loose and granular food products

The oven is manufactured entirely from food-grade stainless steel for hygienic industrial operation and long service life. Thermal insulation panels help maintain energy efficiency and reduce heat loss during operation. Access doors provide convenient maintenance and cleaning of the internal components and conveyor system.

The conveyor speed is adjustable using a frequency converter, allowing the operator to control the processing time of the product inside the roasting chamber depending on the required roasting intensity, product characteristics, and desired final moisture level.

Advantages

5 level continuous conveyor system for high industrial throughput
Three independent heating zones with separate PID temperature control
Integrated cooling conveyors for gradual product temperature reduction
Uniform roasting across the entire layer of the product
Adjustable conveyor speed for precise control of roasting time
Compact vertical design with a large effective processing area
Continuous product movement between levels improves processing uniformity
Product tumbling between conveyor levels improves roasting consistency
Hygienic stainless steel construction for food industry applications
Thermally insulated housing improves energy efficiency
Easy access for cleaning and maintenance through service doors
Suitable for a wide range of loose and granular food products
Adjustable conveyor speed with an IP66 frequency controller
Can be adapted to individual customer requirements and production capacities

Basic version

The basic version includes a five-level stainless steel conveyor oven with three upper roasting conveyors and two lower cooling conveyors. The system is equipped with a 60 kW electric heating system divided into three independent heating zones (3 × 20 kW), stainless steel mesh conveyors, thermal insulation panels, adjustable conveyor speed control through an IP66 frequency converter, and a supporting frame construction.

Each heating zone is equipped with a dedicated PID temperature controller for accurate temperature monitoring and stable thermal processing conditions. The installation includes a discharge section, service access doors, and an integrated cooling section for continuous product cooling after roasting.

Operating principle

The product is continuously fed onto the upper conveyor of the roasting section, where it passes through controlled heating zones for thermal treatment. During movement through the oven, the product layer is evenly exposed to heat, ensuring stable roasting conditions and uniform heat distribution. As the product transfers between conveyor levels, it turns over naturally, improving roasting uniformity across the entire product layer.

After roasting, the product automatically transfers onto the lower cooling conveyors, where gradual cooling takes place during continuous movement. The cooled product is then discharged from the system for packaging or further processing.

The conveyor speed and processing time can be adjusted according to the product type, required roasting degree, moisture removal, and final product characteristics.

Technical specifications

Processing capacity: approx. 100–250 kg/h (depending on the product and process conditions)
Operation mode: continuous
Number of conveyor levels: 5
Roasting conveyors: 3
Cooling conveyors: 2
Conveyor dimensions: 3579 × 500 mm
Maximum operating temperature: up to 120 °C
Heating power: 60 kW (3 × 20 kW)
Temperature control: separate PID controller for each heating zone
Conveyor speed adjustment: frequency converter IP66
Conveyor drive motors: 2 × 0.25 kW
Voltage/frequency: 3 × 400 V / 50 Hz
Dimensions (L × W × H): 4230 × 1500 × 2452 mm
Weight: approx. 1800 kg
Material: food-grade stainless steel AISI 304