Justification parameters of mixer drum feed additives

Abstract

. It is possible to reduce the cost of production and improve the quality of finished feed, due to a balanced composition, by producing feed additives directly on farms. It has been established that better mixing will occur with a smaller difference in the ratio of components. Some components in the compound feed are in an amount of up to 1%. It is advisable to apply a staged mixing scheme, in which a mixture of micro components will be prepared at the first stage, premixes at the second stage and compound feed at the third stage. To obtain a high-quality mixed feed, it is necessary that each premix has a higher level of it. Therefore, the mixer of micro-additives has the highest requirements regarding uniformity. The design chosen for further study allows mixing dry components of premixes, eliminating the phenomenon of segregation due to the movable mixer chamber. Due to the inclined axis of the chamber, mixing occurs not only in the transverse, but also in the longitudinal direction. To better distribute the mixing, the chamber was provided with an agitating blade along the inner surface of the chamber. It has been established that the best operating mode of the installation is 1.6-1.7 s -1 . When determining the duration of mixing of the components, it was found that a sufficiently high level of uniformity of feed additives of 96% is achieved within 240-360 s. The intensity of the mixing process is affected by the measure of the initial filling of the chamber. It has been established that the rational filling factor is k = 0.5-0.6, the width of the working plane of the mixing blade is s = 30-35 mm, which corresponds to the ratio of the blade width to the chamber cylinder diameter of 0.18. has been established that the range of the drum inclination angle within 16-20º is a rational zone with a mixing time of about 300 s. In this case, uniformity of 95-98% can be achieved, which satisfies the zoo technical requirements for all groups of animals.