Conical-bottom silo, particularly suitable for small-sized plastic material and rubber with high elasticity properties, having a discontinuous screw stirrer
AssigneeSorema S.r.l.
InventorFlavio Previero
Life of this patent
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Abstract
A conical-bottom silo, particularly suitable for small-sized pieces of plastic material with properties of high elasticity, includes a conical screw stirrer inserted axially in the conical bottom of the silo. The conical screw of the stirrer is discontinuous and divided into several sections. The silo has a structure for discharging the material arranged below an outlet port positioned laterally in relation to the stirrer and including two co-operating cylindrical screws. The stirrer can be provided with apertured grill outlets for heated, forced air.
Claims4
A conical-bottom silo for small-sized plastic material and rubber with high elasticity properties, comprising:
- an upright cylindrical housing having a conically curved lower sidewall portion which converges downwards towards a bottom plate which has an outlet port for said silo provided therethrough;
- an upright stirrer disposed in said housing so as to be spacedly circumferentially surrounded by said conically curved lower sidewall portion, and supported for rotation about a vertical axis;
- said stirrer having an upwardly convergent upper conical portion and a downwardly convergent lower conical portion which axially adjoin and are coaxially centered on said vertical axis for rotation together about said vertical axis;
- a stirring vane means externally provided on said lower conical portion so as to spiral abut said stirrer along said axis, said stirring vane means being divided into a plurality of sections serially separated from one another by a succession of gaps.
Dependencies are inferred from the claim text.