A device for continuously incorporating precisely metered powdered material such as carbon black into an elastomer

摘要

ABSTRACT 1183/MAS/95 A device for continuously incorporating precisely metered powdered material such as carbon black into an elastomer comprising a mixing chamber (9), a metering device for granular/pulverulent products comprising product feed means; a rotor (2) having a circular plate (21) on to which the product is delivered by the feed means for rotatably driving the said rotor (2), the said plate being bordered by a cylindrical wall (22) bored with at least one channel (24), a cylinder (3) containing the rotor (2), adjusted with respect to the said cylindrical wall (22) so as to leave a slight clearance to permit the rotation of the rotor (2) inside the cylinder (3), said cylinder (3) comprising a port (5) disposed axially opposite the said channel or channels (24) a screen (4) which is fixed with respect to the cylinder (3) and disposed axially at the same level as the said port (5), radially inward of the cylindrical wall (22), and adjusted with respect to the latter so as to permit movement of the rotor (2), the said screen (4) extending angularly beyond both sides of the port (5) by an amount corresponding at least to the angular opening of the said channels and a transfer chamber (6) located down stream of the port (5) , the said transfer chamber being in communication with the mixing chamber via a diverging passage and housing a slidable delivery piston.