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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 Object-oriented design of packaging machines on the principles of mechatronics(2018) Gavva, Oleksandr M.; Kryvoplias-Volodina, Liudmyla; Kokhan, OlenaВ даній роботі наведені результати дослідженнь, які було проведено з метою формування основних принципів об’єктно-орієнтованого проектування пакувальних машин на засадах мехатроніки. Розроблення сучасних мехатронних пакувальних машин потребує розв’язання складних задач в яких враховуються взаємозв’язки між різними складовими, їх реакцію на зовнішні та внутрішні дестабілізуючи фактори. Для розв’язання таких задач запропоновано застосувати методи об’єктно-орієнтованого проектування. Розроблено топологію об’єктно-орієнтованого конструкційно-технологічного проектування пакувальної машини на засадах мехатроніки. На першому етапі проектування проведено аналіз технологічного процесу формування транспортного пакета в подальшому на основі засад SADT сформовано ієрархічна структура машини, побудовані фукціональні та структурні моделі, проведено декомпозицію службової функції машини, розроблена функціонально-структурна схема машини. Функціонально- структурна схема машини ведення параметричного синтезу із вибором найкращих або оптимальних значень геометричних, кінематичних, динамічних та енергетичних параметрів. This paper presents the results of research that was conducted with the aim of forming the main principles of object-oriented design of packaging machines based on mechatronics. The development of modern mechatronic packaging machines requires the solving of complex problems, which take into account the interconnections between different components, their reaction to external and internal destabilizing factors. To solve such problems applying of object-oriented design methods was proposed. The topology of the objectoriented design and technological design of a packaging machine on the basis of mechatronics was developed. In the first stage of the design, the analysis of the technological process of transport package formation was carried out, the basis of the SADT basis was formed the hierarchical structure of the machine, the functional and structural models were developed, the decomposition of the service function of the machine was made, the functional and structural scheme of the machine was developed. Functional-structural scheme of the machine for conducting parametric synthesis with the choice of the best or optimal values of geometric, kinematic, dynamic and energy parameters.