Theoretical studies on biological additives preparation in a blender with a sinusoidal blade paddle mixer

Abstract

Abstract The purpose of the research is to establish the relationship of the geometric parameters of the sinusoidal paddles of a mixer with part of the motion indicators of low-altitude radial sectors of bulk material and the possibility of numerical simulation using existing characteristics. The effect of the flat and sinusoidal mixer blades of the blender, in terms of their construction, on the process of moving layers of the mixed material has been theoretically studied. The equations obtained allow us to state that, due to the difference in the geometry of the blades' surface, when the blades are flat, an inertial shock occurs when the blade contacts the material sector due to its sharp acceleration to the peripheral velocity. With sinusoidal blades, acceleration to a specified velocity is stretched in time, taking into account the amplitude of the sinusoid, reducing the energy cost of the friction of material layers. The obtained equations allow us to identify the relationship and numerically simulate the change in the main indicators of the material position in the blender.