STRENGTHS

• Effective and highly customisable process;
• Quick product change;
• High reliability;
• Low maintenance and access from outside to machine components;
• Easy installation in small spaces.

TECHNICAL FEATURES
The new rotary cooler dryer, which has been completely redesigned in its construction, is developed vertically in a modular manner.
In standard sizes, cylindrical modules are available in diameters of 2.2, 2.5 and 2.8 metres and range from a minimum number of 3 up to 8.

Each module consists of:

• Outer ring consisting of press-folded flanged panels that can be completely dismantled, equipped with an access hatch on the inside and inspection hatches;
• Impeller consisting of a flanged rotating shaft and product support plane, made up of self-cleaning circular tilting sectors in slotted sheet metal;
• Product layer levelling device;
• Safety and product passage control sensors to ensure rapid product change.

The drive consists of a geared motor, safety coupling and gearbox directly keyed to the machine shaft.
The rotation speed, variable via an inverter, allows the treatment time to be adjusted.

At the base of the machine is the inlet module for cooling air, in the centre the inlet module for hot air, which is suitable for drying the product.
In order to achieve high drying temperatures, the two air flows can be regulated by a by-pass system on request.

OPERATION
The product is loaded from above and as it passes through the various stages it is hit by the countercurrent air flow.

The first modules are dedicated to drying, the last to cooling.
Thanks to the uniformity of the layer and the tilting that the product undergoes as it passes from one stage to the next, the drying and cooling process inside the Fragola rotary cooler dryer is particularly effective.

STRENGTHS:

• Effective and highly customisable process;
• Quick product change;
• High reliability;
• Low maintenance and access to machine components from outside;
• Easy installation in small spaces.

TECHNICAL FEATURES
The new rotary cooler, which has been completely redesigned in its construction, is developed vertically in a modular manner.
In standard sizes, cylindrical modules are available in diameters of 2.2, 2.5 and 2.8 metres and range from a minimum number of 3 up to 8.

Each module consists of:

• Outer ring consisting of press-folded flanged panels that can becompletely dismantled, equipped with an access hatch on the inside and inspection hatches;
• Impeller consisting of a flanged rotating shaft and product support plane, made up of self-cleaning circular tilting sectors in slotted sheet metal;
• Product layer levelling device;
• Safety and product passage control sensors to ensure rapid product change.
• The drive consists of a geared motor, safety coupling and gearbox directly keyed to the machine shaft.

The rotation speed, variable via an inverter, allows the treatment time to be adjusted.
At the base of the machine is the inlet module for cooling air.

OPERATION
The product is fed from above and by means of the tilting sectors of the various turntables is gently tipped from plane to plane until the cooler is unloaded.
At the same time, countercurrent air is sucked in from the base module at room temperature.
The progressive cooling of the product with a low temperature difference between the air and the product itself allows a reduction in relative humidity without condensation.
Thanks to the uniformity of the layer and the tilting that the product undergoes as it passes from one stage to the next, the cooling process inside the Fragola rotary cooler is particularly effective.

Available capacity from 5 ton/hour to 50 tons/hour, specific gravity of 0.6 tons / m3.

OPERATION

The product is dosed into the cooler through a rotary feeder and is cooled by counterflow air flow. Cooling takes place gradually until the product is discharged into the collecting hopper.

Various unloading systems are available to ensure product integrity.

Cooling time from 8 and 10 minutes.