Rotary-centrifugal shredder for forage preparation

Abstract

Existing grain shredders have disadvantages, the main of which are the following: high metal and energy consumption, uneven granulometric composition of the crushed product, high percentage of pulverized fraction, rapid wear of working bodies, product heating. To eliminate the disadvantages, the design of a rotary-centrifugal grain shredder is proposed. The presented design requires optimization of a number of structural and kinematic parameters. To solve this problem, the method of a multifactor experiment was chosen. The feed of grain material, the rotor speed, the opening of the separating surface, and the number of knives on the inner and outer rings were taken as factors that varied at two levels. As optimization criteria, the plant performance, power consumption during grain grinding, and compliance of the resulting product with zootechnical requirements were considered. As a result of data array processing, adequate and reliable mathematical models were obtained. As a result of model analysis, the influence of factors on optimization criteria was established.