Rotary Cooler

The RRF rotary cooler is used for cooling flour, pellets or flakes.

In the feed industry, it is widely used in the pelleting lines to cool the pellets. Thanks to their simple and rational design and robust construction, our modular rotary coolers are characterised by a high degree of reliability and efficiency.
In small installation spaces, they ensure optimal product handling in a short time.

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.
3D RENDERING 1:1: 
AUGMENTED REALITY 1:10*

*In the Android environment it may be required to download a specific app in order to read the QR-Code. A latest generation phone is recommended for viewing in Augmented Reality.

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 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.

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.

RRF-PER-NORMALINO_rev1
ROTARY COOLER A Stages B C D E F G Weight (**) [kg] Bed dept [mm]

MAX CAPACITY [ton/h] (*)

Treatment time: 7 min

MAX CAPACITY [ton/h] (*)

Treatment time: 10 min

MAX CAPACITY [ton/h] (*)

Treatment time: 13 min

RRF 22/3 2200 3 450 450 1800 200 215 2215 2775 180 10,5 7,4 5,7
RRF 22/5 2200 5 450 450 2700 200 215 3115 3705 180 14,4 12,3 9,4
RRF 22/8 2200 8 450 450 4050 200 215 4465 5100 180 28,1 19,6 15,1
RRF 25/3 2500 3 500 500 2000 200 215 2415 3160 200 15,1 10,6 8,1
RRF 25/5 2500 5 500 500 3000 200 215 3415 4220 200 25,2 17,6 13,6
RRF 25/8 2500 8 500 500 4500 200 215 4915 5810 200 40,3 28,2 21,7
RRF 28/3 2800 3 550 550 2200 200 215 2615 3560 200 18,9 13,3 12,2
RRF 28/5 2800 5 550 550 3300 200 215 3715 4760 200 31,6 22,1 17,0
RRF 28/8 2800 8 550 550 4950 200 215 5365 6560 200 50,5 35,4 27,2

 

(*) Referred to a product with a specific weight of 0,6 kg/dm3
(**) The support stand is not included
Fragola Spa reserves the right to modify product design and specification without due notice.