The rotary extractors are used in silos of small and medium sizes, to ensure a homogeneous extraction throughout the section of the silo as well as a uniform descent of the column of material stored in it. This extraction system is based on an arm in the shape of a logarithmic spiral, which "sweeps" the bottom of the Silo, moving the material, without compacting it, to the central discharge.
This type of discharge is suitable for materials that do not flow freely.
This system, installed at the bottom of the silo, sweeps the material by pushing it towards the discharge ports by means of a reciprocating movement.
TAM has extensive experience with this discharge system, frequently used due to its low consumption and robustness.