초록 ▼

Mixing material around an inner agitator in a mixing vessel is urged upward and outward by rotating the inner agitator in one direction. Simultaneously, mixing material around or adjacent an outer agitator is urged downward and inward by rotating the outer agitator in the opposite direction. Consequ

Mixing material around an inner agitator in a mixing vessel is urged upward and outward by rotating the inner agitator in one direction. Simultaneously, mixing material around or adjacent an outer agitator is urged downward and inward by rotating the outer agitator in the opposite direction. Consequently, the mixing materials urged upward and downward are caused to be circulated by convection in the mixing vessel and the mixing materials urged outward and inward are caused to collide between the inner and outer agitator, thus forming a high-pressure region between the inner and outer agitator. The mixing materials are mashed in the high-pressure region and well mixed in a short time at high efficiency without being agglutinated to the inner agitator.

대표청구항 ▼

A mixing device comprising: a substantially cylindrically mixing vessel having an interior for containing therein materials to be mixed, said interior having a radially center portion and a peripheral portion radially outwardly of said center portion; an inner agitating means including a vertical ro

A mixing device comprising: a substantially cylindrically mixing vessel having an interior for containing therein materials to be mixed, said interior having a radially center portion and a peripheral portion radially outwardly of said center portion; an inner agitating means including a vertical rotary shaft located at a center axis of said vessel and a spiral blade spirally wound about said shaft and integral therewith, said spiral blade extending throughout substantially the entire axial height of a portion of said vessel interior within which the materials are to be contained, and said spiral blade being solid radially outwardly from said shaft; an outer agitating means including a rotary cylindrical shaft arranged coaxially about said shaft, a pair of arms extending radially horizontally outwardly from said cylindrical shaft, support rods extending downwardly from respective said arms, and agitator vanes mounted on respective said support rods, each said agitator vane having a height extending throughout substantially said entire axial height of said portion of said vessel interior, each said agitator vane comprising an upper portion bent forwardly relative to a direction of rotation of said outer agitating means, a middle portion attached to the respective said support rod, and an oblique lower portion inclined radially inwardly; driving means for rotating said inner agitating means in a first direction and for rotating said outer agitating means in a second direction opposite to said first direction; and said inner and outer agitating means being configured and relatively positioned such that, upon rotation thereof in said respective first and second directions, said inner agitating means urges all of the materials in said center portion upwardly and said outer agitating means urges the materials in said peripheral portion downwardly, thereby creating a recirculating flow of the materials within said vessel interior, and simultaneously said inner agitating means urges the materials in said center portion radially outwardly and said outer agitating means urges the materials in said peripheral portion radially inwardly, thereby causing the radially outwardly moving materials and the radially inwardly moving materials to collide intensely between said inner and outer agitating means and to thus generate a substantially annular high-pressure region of the materials radially between said inner and outer agitating means.