Abstract
Existing feed devices use methods of grinding grain and other components of the feed mixture in hammer crushers, which requires significant costs of mechanical (electrical) energy. Therefore, it is necessary to develop devices with a high degree of impact on the treated environment, which increases productivity and reduces energy consumption in technological processes. Such devices include rotor-pulsation devices, the principle of operation of which is based on the method of discrete-pulse energy input. The basis of this method is a multifactorial effect on the treated liquid homogeneous or heterogeneous medium, which consists of pressure pulsations, changes in fluid flow rate, intense cavitation, developed turbulence, hard cumulative effects, as well as high shear forces. The purpose of the study is to conduct a comprehensive analysis of kinematic and dynamic characteristics and establish the features of discrete-pulse energy input in the dispersion of grain mixtures in a rotary pulsation apparatus and develop on this basis energy-saving technology and equipment for liquid grain feed. A numerical and experimental study of heat and mass transfer processes in rotary pulsation apparatus for the preparation of liquid grain feed has been carried out. The basic hydraulic and thermal characteristics of such devices are received and geometrical characteristics of such device are defined. Experimental samples of the device for rectangular round shape of openings in the rotor-stator system are developed and made. Experimental studies of such characteristics as particle size distribution of grain feed mixture, power consumption in feed production and temperature change of water-grain mixture during its processing have been carried out.
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