Patent ID: 7677788

Claim:
A mixing device, in particular for use as a continuously working reactor, comprising: at least two rotating shafts ( 11 , 14 ), wherein at least two opposite rows of blades ( 12 a , . . . , 13 a , . . . , 13 m ) are disposed on each shaft ( 11 , 14 ) and each row of blades ( 12 a , . . . , 13 a , . . . , 13 m ) includes at least two individual blades, and that the blades are fastened to the shaft ( 11 , 14 ) at a fastening point along a shaft diameter (D W ) at an angle of incidence α to a longitudinal axis of the shaft ( 11 , 14 ), the blades themselves being curved so that the blades ( 12 a , . . . , 13 a , . . . , 13 m ) exhibit the angle of incidence α at the fastening point on the shaft ( 11 , 14 ) and an angle of incidence β to the longitudinal axis of the shaft ( 11 , 14 ) at an outer diameter of the blades (D A ) such that the angle of incidence β at the outer diameter of the blade (D A ) is less than the angle of incidence α at the shaft diameter (D W ), and that the angle of incidence α continuously decreases from the shaft diameter (D W ) to the angle of incidence β at the outer diameter of the blade (D A ).