Agitator for spherical, hemispherical or elliptical vessels - permitting mixing, solvent removal, drying and size reduction, in one vessel

摘要

An agitator for spherical, hemispherical or elliptical vessels has two or more arms, each with an edge following the contour of the vessel from the bottom to the part where the dia. is a max. and the other edge formed so that a section of the arm forms an angle with the vertical plane, which increases from the bottom to the top of the arm. Each arm has several, e.g. three, elements, the sections of which make angles with the vertical plane which increase from the bottom to the top, and angles with the horizontal plane which increase with respect to a reference radius. the upper end of each arm is approx. a tangent to the vessel surface and has a number of teeth near it. The agitator allows a series of operations to be performed in a single perfectly fluid-tight vessel, e.g. mixing, solvent removal, drying and particle size reduction, which normally necessitate three or four vessels in series. It creates a minimum of suction and can be used to prepare a mixt. of dry powders in any proportion with any degree of fineness and to incorporate a liq.