Mixing machine for homogenising a liquid mixture containing bitumen with solid granules

摘要

A mixing machine (1) adapted to mix a liquid mixture containing bitumen with solid granules so as to obtain a homogenised bituminous mix. The machine comprising a cylindrical container (2) arranged coaxially to a vertical axis (A) and capable of containing the liquid mixture containing bitumen and the solid granules, a heating circuit (4) for heating the inner side surface (2a) of the cylindrical container (2), a mixing assembly (3) mounted axially rotatable within the container (2) to rotate about the vertical axis (A), and a driving unit (10) adapted to rotate the mixing assembly (3) about the vertical axis (A). The mixing assembly (3) comprises a helicoidal blade (20) which extends coaxial to the axis (A) within the container (2) and has its outer peripheral edge (20a) in contact with the inner surface (2a) of the container (2) so as to scrape the material adhering on the inner surface (2a) during its rotation.