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Постійне посилання колекціїhttps://dspace.nuft.edu.ua/handle/123456789/7522
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Документ Simulation of hydrodynamic phenomena in valve feeders of adaptronic modules for dosing liquid products(2024) Gavva, Oleksandr; Kryvoplias-Volodina, Liudmyla; Dolomakin, Yuriy; Kulyk, Nataliya; Kokhan, AntonRational geometric and hydrodynamic parameters of valve feeders of adaptron modules for dosing liquid food products in automatic packaging machines are determined. Materials and methods. The study of hydrodynamic phenomena based on the simulation modeling of the feeder operation with liquid media, the physical and mechanical characteristics of which are close to Newtonian liquids, was conducted. A feeder with a conical valve and purified drinking water were used in the study. The feeder throughput was 500 cm3/s; the internal diameter of the drain nozzle was 20 mm. Results and discussion. To ensure the continuous flow, minimum overall dimensions of the feeder, and the possibility of regulation by changing the throughput of the feeder nozzle according to a given law, the angle at the base of the cone should be within 50–60°, and the length of the saddle base 20–25 mm. During the movement of the liquid in the valve feeder, three negative factors affecting the parallel laminar movement of the liquid were found: (a)reverse movement of the liquid when it comes into contact with the surface of the base of the valve cone; (b) turbulence cells at the entrance of the liquid into the valve channel, and (c) the tubular form of the liquid flow in the nozzle. These negative factors can be eliminated by using a ball-conical valve with a truncated top. To eliminate turbulence cells in the valve feeder, counter-current movement of liquid, and tubular flow of liquid in the nozzle, it was proposed to make the valve in the form of a conical-spherical shape with a cut-off cone top, and also to extend the inner surface of the seat to the inner surface of the measuring cylinder of the feeder. Under such conditions, a parallel flow of liquid is ensured, which contributes to the accuracy of dose formation and the duration of product storage. Conclusions. The design of the valve in the form of a conically spherical figure with a cut-off cone top according to the provided recommendations allows eliminating the centers of turbulence in the movement of liquid products in the valve feeder.Документ Influence of eccentricity of internal rotor’s cylinder for mixing water-flour mixture on its kinematic and dynamic parameters(2017) Dolomakin, Yuriy; Babanov, Igor; Shevchenko, Andrii; Babkina, IrinaДосліджено процес змішування компонентів водно-борошняних сумішей як основ напівфабрикатів харчових та фармацевтичних виробництв за допомогою інтенсивного роторно-пульсаційного змішувача періодичної дії. The process of mixing components of water-flour mixesas the bases of semi-food and pharmaceutical productions with the help of an intensive rotary-pulsating mixer of periodic actionДокумент Searching for the limit yield stress of liquid sourdough(2016) Dolomakin, YuriyFound significance of the limit of yield stress for the liquid sourdough humidity of 65 % and a temperature of 28 °C. Знайдено значення граничного напруження зсуву для рідкої опари вологістю 65 % і температурою 28 °С.Документ Determination of the main stages of mixing wheat sourdough relative method(2016) Dolomakin, YuriyThe optimum duration of the cooking liquid wheat sourdough for the proposed design of the mixer was determined by fixing the beginning of time, during which the amount of torque on the outside of the mixing bowl was at the same level for a certain period of time. Slots began to form structures have been identified in the system of the flour/water, the time to reach the maximum resistance of the system, and the start time balancing system as an indirect factor in product availability.Документ Concentration of fusel oil in alcohol column(2013) Osipenko, Olexiy; Dolomakin, Yuriy; Osypenko, V.To improve the process of removal of fusel oils in food distillation of ethyl alcohol is advisable to identify the areas of concentration in the system ethanol-water-izoamilol that at rectification form condensates heterogeneous type, and identify some of their technological characteristics.