Drum cleaner with aspiration PRA

This model of cleaner is designed for cleaning grain from dust and for separating whole grain from broken and other impurities.

It is used to clean cereals before long-term storage. Cleaning before storage makes it possible to avoid overheating, which may occur when there is husk, chaff or broken grain. As a result, you get a final product of higher quality.

Characteristics of this model:

  • Body and supports are made of galvanized extruded panels
  • Air supply is vertical or horizontal
  • Side doors are equipped with a handle with lock
  • Sieves are made of carbon steel
  • Drum angle is adjusted manually
  • The rotation speed does not change
  • The conveyor for unloading large impurities is adjusted manually

Operating principle

The product flows by gravity into the electric distributor and occupies the entire width of the machine. Then the grain descends lower and an air stream passes through it, blowing out light impurities.

Then the product enters a rotating drum, which is equipped with interchangeable sieves. Small impurities go through the first sieve, then a good product comes out and large impurities come out at the end of the drum.

The size of the holes in the sieves is selected depending on the type of product to be cleaned.

Technical characteristics

Model PRA 3/6 PRA 4/6 PRA 3/9 PRA 4/9 PRA 3/12 PRA 4/12 PRA 5/12 PRA 3/16 PRA 4/16 PRA 5/16
Capacity, tph 20 30 55 70 80 125 170 140 180 290
Sieve area, m2 3.75 5 7.5 10 10.5 13.5 16.75 13.5 18 22.5
No of sieves 3 4 3 4 3 4 5 3 4 5
Drum motor power, kW 1.1 1.1 2.2 3 3 4 5.5 4 5.5 7.5
Aspiration power, kW 2.2 2.2 4 4 5.5 5.5 5.5 11 11 11
Power, kW 0.55 0.55 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75
Length, mm 2935 3590 3930 4780 4370 5280 6175 4480 5390 6300
Width, mm 1256 1256 1610 1610 2110 2110 2110 2620 2620 2620
Height, mm 3170 3170 3850 3850 4600 4600 4600 5400 5400 5400
Weight without product, kg 800 900 1250 1350 1000 2120 2350 2900 3400 3900
Volume, m3 11.7 14.3 24.4 29.6 42.4 51 59.7 58.7 70.7 82.6