The Shape of the Mixing Chamber of the Continuous Mixer

Abstract

Existing batch mixers for the preparation of wet feed mixtures are ineffective due to their low productivity

and high energy intensity. The aim of the study is to substantiate the shape of the mixing chamber of a continuous mixer. The analysis of the influence of the shape of the mixing chamber on the technological process of mixing the feed mass. It was found that the presence of free space between the cover and the working body of the mixer provides a chaotic movement of feed particles after impact of the feed mass on the cover, thereby improving mixing conditions. The necessity of supplying the mixer with a cover in the form of a trihedral box, which excludes additional resistance to rotation of the screw due to the influence of forage masses reflected from the cover, is justified. Experimental studies were conducted on the selection of the rational shape of the mixing chamber of the mixer. It is established that the use of a cover in the form of a triangular box in the mixer provides a reduction in the required drive power by 25% and an improvement in mixing quality by 4-5% compared to a mixer equipped with a flat cover. The optimal angle of inclination of the reflecting plane of the cover in the form of a trihedral box of the mixer mixing chamber is 31-35 with a screw diameter of 400 mm, a reflecting plane height from the screw axis of 350 mm and a rotation frequency of 36.61