Design Improvement of the Rotary-Pulsation Device by Resonance Phenomena

Design improvement for increasing the energy efficiency of machines and equipment in the food industry is particularly relevant to the current state of the world's economies. If the energy consumption for the homogenization process is reduced to 1.5–2.5 kW/h, the total energy consumption in the drinking milk production line will decrease by 40–50%. For this purpose, the rotor-pulsation device is proposed to be improved by applying vibrations to the processed medium due to the vibrations along the rotor's axis. For such a homogenizer, the characteristic variants of the synchronization of the rotation and oscillation phases of the rotor are analyzed, which include the ratio between the rotation frequencies of the rotor and the crank and the shift between the rotation angles of the rotor and the crank. To increase the efficiency of the milk emulsion dispersion process, based on the sliding speed of the fat globule relative to the milk plasma, the optimal synchronization option has been determined, in which the frequency of pulsations caused by the rotational and oscillating movements of the rotor is the same. The nature of the speed change is similar. This leads to the emergence of pulsation resonance, which increases the amplitude of oscillations, the speed of sliding, and, therefore, the degree of dispersion. The rate equation for this operation mode of the homogenizer has been derived.