Vibrations in engineering and technology

Sevostianov Ivan – Doctor of Technical Sciences, Full Professor, Head of the Department of “Technological Processes and Equipment of Processing and Food Productions” of Vinnytsia National Agrarian University (3 Sonyachna St, Vinnytsia, 21008, Ukraine, e-mail: ivansev70@gmail.com).

One of the most urgent problems of Ukrainian food industry enterprises (in particular, sugar, alcohol, brewery, coffee), as well as enterprises producing fruit and berry juices, is the processing of wet dispersed waste with an initial moisture content of 90-95%. As practice has shown, these wastes after dehydration to a moisture content of 20-25% can be effectively used as valuable additives to agricultural fodder or as fuel. At the same time, the specified final humidity can be ensured by the sequential implementation of mechanical methods of dewatering the processed material on a vibrating screen, in a screw press and vibrating impact load in a closed press-form, which allows to significantly reduce energy costs compared to thermal dehydration. But for longer storage of the specified waste, a moisture content of no higher than 8% is required, which can be achieved only after their additional heat treatment. The article proposes a scheme of a combined dryer in which processed waste sequentially passes through the stages of mechanical dehydration in screw feeders, grinding in a hammer crusher, processing on vibrating screens with spatial dynamic loading and final thermal dehydration in a fluidized state in jets of hot air or steam, which are secondary products of this enterprise. At the same time, the offered dryer provides a closed working process, which allows, if it necessary, to dehydrate the same portion of waste several times until the optimal final moisture is reached. The article also presents equations and dependencies for determining the duration of waste dehydration at each stage of the dryer's work process, its productivity in terms of dehydrated waste and the total power of the electric motors of the proposed equipment. All this allows you to evaluate the effectiveness of the considered dryer in comparison with other machines of a similar purpose.

1. Kaletnik, H., Sevostianov, I., Bulgakov, V., Holovach, I., Melnik, V., Ihnatiev, Ye., Olt, J. (2020) Development and examination of high-performance fluidisedbed vibration drier for processing food production waste. Agronomy Research. 18(4), P. 2391 – 2409.

2. Bulgakov V., Sevostianov I., Kaletnik G., Babyn I., Ivanovs S., Holovach I., Ihnatiev Y. (2020) Theoretical Studies of the Vibration Process of the Dryer for Waste of Food. Rural sustainability research 44 (339).

3. Cherevko, O. I., Poperechny, A. M. (2019) Procesy i aparaty harchovyh vyrobnycztv [Processes and apparatuses of food productions] Harkiv.: Svit Knyg [in Ukrainian].

4. Sevostianov, I. (2020) Technology and equipment for vibro-blowing dehydration of damp dispersive materials. Monograph. Vinnytsia: VNAU [in Ukrainian].

5. Martseniuk, O. S. (2021) Protsesy i aparaty kharchovykh vyrobnytstv Osnovni poniattia i zakony [Processes and apparatuses of food productions. Main lows and conceptions]. Kyiv : NUKhT, [in Ukrainian].

6. Sevostianov I., Ivanchuck Ya. Kravets S. (2020) Elaboration and researches of hichly effective installation for vibro-blowing dehydration of dispersive waste of food productions. Tekhnika, enerhetyka, transport APK. 3 (110). 24-33.

7. Sevostianov I.V., Kraievskyi S.O., Sevostianov V.I. (2021) Ustanovky z hidropryvodom dlia rozdilennia volohykh dyspersnykh system [Installations with hydraulic drive for separation of damp dispersive systems]. Tekhnika, enerhetyka, transport APK. 3 (114). 104-112. [in Ukrainian].

8. Kolisnichenko E. V., Mandryka A. S., Panchenko V. O. (2021) Hidravlika, hidro- ta pnevmopryvody. Sumy: Sumskyi derzhavnyi universytet. [in Ukrainian].

9. Sevostyanov І., Ivanchuk Y. (2022) Мodelling of working process of equipment with hydraulic drive for separation of damp dispersive materials. Tekhnika, enerhetyka, transport APK. 1 (116). 77-82.

10. Sevostyanov І., Ivanchuk Y. (2022) Еlaboration and researches of a vibro-press for dehydration of damp dispersive materials. Vibratsii v tekhnitsi ta tekhnolohiiakh. 1(104). 5-11.

11. Sevostyanov І. (2022) Determination of optimal design and working parameters of a vibro-press for dehydration of damp dispersive wastes of food industry. Tekhnika, enerhetyka, transport APK. 2 (117). 87-96. 

12. Sevostyanov І. (2022) Еlaboration of processes of vibro-blowing dehydration of damp dispersive materials in a closed press-form. Vibratsii v tekhnitsi ta tekhnolohiiakh. 2 (105). 5-16. 

13. Sevostyanov І., Melnyk O. (2022) Systems of automatic control for hydroponic technological complexes. Vibratsii v tekhnitsi ta tekhnolohiiakh. 2 (105). 76-83.