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Документ Methodology of synthesis of packing machines for food products based on multicriterial analysis(2020) Kryvoplias-Volodina, Liudmyla; Gavva, Oleksandr M.; Derenivska, Anastasiia; Volodin, OleksandrThe complex of technical means for optimization synthesis of assembling of a packing machine of separate functional modules has been developed. The method of synthesis of a packing machine, based on criterial assessment of separate functional modules (FM), combined by two main assessment groups, has been offered. FM may be selected and calculated by the program of consumption, based on the overall equipment effectiveness (OEE) criterion. An example of synthesis, based on the offered method, takes into account variants of choice of ready functional modules, based on the hierarchic structure of a module of roll packing material supply. The method takes into account the systemic approach to analysis of equipment constructions for packing fine-piece and piece food products in a consumption package. The synthesis of FM assembling as conceptual models, abstract ones, reflecting the construction structure and connections between separate elements – functional devices (FD) – has been offered. Розроблено комплекс технічних засобів оптимізації синтезу компонування пакувальної машини з окремих функціональних модулів. Запропоновано метод синтезу пакувальної машини на основі критеріальної оцінки окремих функціональних модулів (ФМ), об'єднаних двома основними групами оцінювання. ФМ може бути обраний і розрахований відповідно до загального критерію ефективності обладнання (ОЕЕ). Приклад синтезу, заснований на запропонованому методі, враховує варіанти вибору готових функціональних модулів, виходячи з ієрархічної структури модуля подачі рулонного пакувального матеріалу. Метод враховує системний підхід до аналізу конструкцій обладнання для упаковки сипких і штучних харчових продуктів в споживчу упаковку. Запропоновано синтез ФМ-збірки як концептуальних моделей, абстрактних, що відображають структуру конструкції та зв'язки між окремими елементами - функціональними пристроями (ФП).Документ Synthesis of precision dosing systems for liquid products based on electropneumatic complexes(2021) Gavva, Oleksandr M.; Kryvoplias-Volodina, Liudmyla; Blazhenko, Serhii; Tokarchuk, Serhii; Derenivska, AnastasiiaThis paper reports the construction of a mathe-matical model for the process of dosing liquid foods (non-carbonated drinking water). The model takes into consideration the differential equations of chang-es in the kinematic parameters of the liquid in a dos-ing device's channels and the corresponding accept-ed initial and boundary conditions of the process. The boundary conditions account for the influence of soft-ware-defined airlift dosing modes using the driver and the geometry of the product pipeline. The current's value measured in mA (with an accuracy of 0.001 mA) relative to the standard scale Imin is Imax=4...20 mA.Individual stages of the dosing process were ana-lytically described, followed by the analysis of sepa-rate stages and accepted assumptions.The accuracy achieved when testing the experi-mental sample of the dispenser, with the repetition of the dose displacement process, ranged between 0.35 % and 0.8 %. The reported results are related to the established dosage weight of 50 ml when changing the initial level of liquid in the tank of the dosing feeder by 10 mm.An experimental bench has been proposed for investigating the functional mechatronic dosing mod-ule under the software-defined modes to form and discharge a dose of the product. The bench operates based on proportional feedback elements (4–20 mA) for step and sinusoidal pressure control laws in the dosing device.The control model with working dosing modes has been substantiated. The control models built are based on proportional elements and feedback.During the physical and mathematical modeling, the influence of individual parameters on the accuracy of the product dose formation was determined; ways to ensure the necessary distribution of compressed air pressure, subject to the specified productivity of the dosing feeder, were defined. The study results make it possible to improve the operation of precision dosing systems for liquid products based on electro-pneumat-ic complexes.Документ Practical aspects modeling of air conveying modes for small–piece food products(2020) Kryvoplias-Volodina, Liudmyla; Gavva, Oleksandr M.; Yakymchuk, Nikolai; Derenivska, Anastasiia; Hnativ, Taras; Valiulin, HennadiiA mathematical and physical model of the critical pneumatic conveying modes has been developed to ensure the calculation and construction of pneumatic product pipelines of continuous operation. The model takes into consideration the technological conditions of gas suspension movement; the laws of movement of individual fine particles, accounting for their impact interaction and decompression, as well as the actual boundary conditions for a food product movement. The parameters of the zone of dynamic destruction of the layer of a small-piece food product by impact airwave were experimentally studied; the results of the calculation have been compared with the experimental data. The process of managing critical pneumatic conveying modes has been theoretically described, based on the proportional elements and feedback (a current loop of 4‒20 mA); the process of destruction of the cluster of products by airwave and controlled decompression has been studied. The process of pneumatic conveying of a small-piece product at the experimental bench system has been examined. As well as the process of moving the material in the product pipeline, which is controlled by compressed air pulses, to maintain the modes of operation. The following has been established: pressure losses caused by the movement of clean air; additional pressure losses resulting from the movement of the material; the loss of pressure required for transporting in a suspended state on a vertical stretch. A model has been developed to calculate the coordinates of a product particle when it collides with the inner surface of the product pipeline, as well as a change in its kinematic characteristics. The developed model makes it possible to determine the rational modes of pneumatic conveying and possible energy costs in the processing of various small-piece materials. The rational pneumatic conveying regimes have been determined, as well as possible energy costs in the processing of small-piece materials. As the time of supplying compressed air in the product pipeline increases, the number of product particles reaches a maximum in the range of 0.1...0.2 s. The compressed air flow rate, depending on the value of inlet mainline pressure P (0.1…0.3 MPa), is 80…160 (Nl/min). A general approach to the modeling of pneumatic conveying systems has been proposedДокумент Rationale mode operating of mechanism for compacting bulk products in carton box in automatic packaging machines(2015) Derenivska, Anastasiia; Gavva, Oleksandr M.; Kryvoplias-Volodina, LiudmylaIn packaging machines, when bulk products were dosing into the carton box, negative phenomenon which was caused by the rheological properties of bulk food products is the formation of products hill. For hermetically closing carton box must be destructed hill of granular products by method of compacting. У пакувальних машинах, при дозуванні сипкої продукції в картонну пачку, негативним явищем, викликаним реологічними властиивостями дозованої продукції, є утворення гірки. Для герметичного формоутворення кришки чотирьохклапанної картонної пачки необхідно усунути гірку сипкої продукції за допомогою методу ущільнення.Документ Fundamentals of selection process of the equipment for food production packaging lines(2016) Kryvoplias-Volodina, Liudmyla; Gavva, Oleksandr M.; Derenivska, AnastasiiaThe priority tasks of scientific and technical nature, the solution of which creates the conditions for improving the operation of packing equipment, include the introduction of modern hardware, software, methods and algorithms for parametric control and diagnostics of the equipment, as well as the implementation of tools and methods for the control of technological parameters in real time operation. OEE criterion (Overall Equipment Effectiveness) allows detecting losses and reasons for inefficiency. As a result, both breakdown stoppages and losses due to inefficient operation of the equipment, slow performance or pending delivery are identified. Therefore, OEE enables to evaluate the effect of current performance of a particular piece of equipment on the efficiency of the whole production. The resulting values of the parameters of operation reliability are compared with the corresponding values of previous periods. This approach provides means for assessing the equipment reliability.Документ Research of the profile's geometry of screw conveyors, which are forming part of transport systems for moving carton packages(National Academy of Packaging - Bulgaria, 2014) Derenivska, Anastasiia; Gavva, Oleksandr M.; Lyubimov, ValeriyPresent an analysis moving package process by means of screw conveyer packing machine with consideration of geometrical parameters package and given moving law. Purpose of the conducted research of determination of optimal geometrical and kinematics parameters screw conveyer which will enable to provide trouble-free high-performance packing automatic machine and choice recommendation of moving package law. Наведено аналіз процесу перевантаження упаковки в шнековому конвеєрі пакувальної машини. Мета проведеного дослідження визначення оптимальних геометричних та кінематичних параметрів шнека, що дасть можливість забезпечити безперебійну високопродуктивну роботу пакувальної машини-автомату.Документ Ways to reduce dosing error of granular products in linear weight dosing machines(2013) Gavva, Oleksandr M.; Derenivska, Anastasiia; Kryvoplias-Volodina, LiudmylaIn this article there is the result of laboratory research of linear weight dosing machine, providing permanent product flow through outlet port of hopper and minimizing the dynamic part of granular product dosing error, by rational placing of weighing container.Документ Optimization of transportation of bulk solids food products in the linear weight feeder of packing machine(2014) Derenivska, Anastasiia; Gavva, Oleksandr M.; Kryvoplias-Volodina, Liudmyla; Kokhan, OlenaIn this article considers research results of work linear weight feeder of packing machine subject to "rough” and "exact” dosing modes. For optimization of transportation of bulk solids food products in this weightfeeder was offered to use such assistive devices, as limiting guide. The mathematical analysis and graphical modeling position guide enabled to decide on its type and operation mode. У цій статті розглядаються результати дослідження роботи лінійного вагового живильника пакувальної машини за умови "грубого" і "точного" режимів дозування. Для оптимізації транспортування сипких продуктів харчування в цьому ваговому живильнику запропонували використовувати такий допоміжний засіб, як обмежене регулювання. Математичний аналіз і графічне моделювання дозволило прийняти рішення про його тип та режим роботи.