Marot Rotary Drum Cleaner

Marot Rotary Drum Cleaner

Suitable for an extensive range of crops including: Wheat, Barley, Maize, Oil seed rape, Rice, Soya, Coffee and Cocoa.Marot Cleaner

Pre-Cleaning: up to 400t/h.

Grading: up to 60t/h (based on wheat @780kg/m3)

Chief Industries has exclusive rights to sell Marot rotary cleaners and spares (as previously sold by Law Denis)



Advantages of a rotary grain cleaner


Due to continuous movement and reduced vibrations, each particle enters more fluently in the
screen perforation. This is why a drum grader is requested for precise grading. Accuracy
decreases when grain bounces on a vibrating screen.

Reduced vibrations:

On an existing light stand, reduced dynamic force allows installation of drum cleaner when a
vibrating flat screen machine needs stronger and more expensive installation.

Efficient deblinding:

Especially for seed cleaning, removal of small or broken seeds with little perforations is
important. Drum deblinding of perforations remains perfect, easy to control and keeps high level
efficiency. Flat screen cleaners have a bottom screen impossible to check and difficult to
deblind because of the thick layer of seed pressing constantly the blinded perforations.

Flexible diagram:

On a drum, each screen can be used for screening or for scalping, and possibly fit all needs.

Variable speed and slope:

Increase speed or slope on a flat screen increases bouncing of particules and reduces precision.
Because of the continuous movement, these variations are very precise on a drum and can be
easily controlled.

Suitable for difficult products:

Because of this flexibility, a drum is always used to process difficult products (eg. cotton, wet
maize, etc) or when an installation must be multi-purpose. Using a similar machine for both
precleaning and fine cleaning reduces maintenance problems.


Screen Pre-Cleaner

MAROT PN (“Pré-Nettoyeur”) pre-cleaners are designed for simple and quick removal of large impurities and rubble from grain. This is essential prior to drying in order to avoid
blockages and unnecessary expenditure in energy. Grain enters into the rotating drum and passes through the screen perforations leaving the large rubble to be rejected at the end. The choice of screen perforation size depends upon the duty and the type of grain to be precleaned. PN 601, 1002, 1253, 1503, 2004, 3003, 4004 and 5005 enable small trash to be rejected at the first screen section. The pre-cleaner has a large screen area and is equipped with a system to keep the perforations clear. Flow rates from 35 to 400 tonnes per hour can be achieved. Aspiration in various forms can also be added.

G: Raw Sample - R: Large rejects - A + B: Good grain