STAR SELECT Star Screen Machines

The feed hopper of the STAR SELECT S 60 can be conveniently loaded on the left-hand side of the machine using a wheel loader. A special centrifugal conditioner with attached throwing shovels then ensures that the material is distributed as evenly as possible onto the coarse screening deck. The screen decks consist of many rotating screen shafts on which screen stars are mounted. After feeding, the material slides over these star screen shafts by being repeatedly thrown up and passed on by the screen fingers. However, only the grain that is too large for the distances between the sieve fingers is passed on to the rear. This coarse grain is discharged at the end of the first screen deck via the coarse grain conveyor. The smaller components of the throughput (medium & fine grain) fall down through the gaps between the screen fingers onto the fine screen deck. This works on the same principle as the coarse screen deck – but with smaller screen stars – so that two fractions are produced here as well: The medium fraction is passed on to the end of the fine screen deck via the medium grain conveyor, while the fine fraction falls between the fingers onto a collecting conveyor. This transports the fine fraction to the rear of the machine, from where it is also discharged from the machine via the fine-grain conveyor. After the material has flowed through, the stock piles of the three fractions are distributed around the machine in the quality required by the user as follows:

• Coarse grain: rear of machine
• Medium grain: direction of travel right front
• Fine grain: direction of travel left rear