Please use this identifier to cite or link to this item: http://ena.lp.edu.ua:8080/handle/ntb/49616
Title: Substantiation of geometric parameters of discharge hopper hole at gravitational outflow of finely dispersed bulky material
Authors: Sholovii, Yurii
Maherus, Nadiia
Affiliation: Lviv Polytechnic National University
Bibliographic description (Ukraine): Sholovii Y. Substantiation of geometric parameters of discharge hopper hole at gravitational outflow of finely dispersed bulky material / Yurii Sholovii, Nadiia Maherus // Ukrainian Journal of Mechanical Engineering and Materials Science. — Lviv : Lviv Politechnic Publishing House, 2019. — Vol 5. — No 1. — P. 20–28.
Bibliographic description (International): Sholovii Y. Substantiation of geometric parameters of discharge hopper hole at gravitational outflow of finely dispersed bulky material / Yurii Sholovii, Nadiia Maherus // Ukrainian Journal of Mechanical Engineering and Materials Science. — Lviv : Lviv Politechnic Publishing House, 2019. — Vol 5. — No 1. — P. 20–28.
Is part of: Український журнал із машинобудування і матеріалознавства, 1 (5), 2019
Ukrainian Journal of Mechanical Engineering and Materials Science, 1 (5), 2019
Journal/Collection: Український журнал із машинобудування і матеріалознавства
Issue: 1
Volume: 5
Issue Date: 20-Mar-2019
Publisher: Видавництво Львівської політехніки
Lviv Politechnic Publishing House
Place of the edition/event: Львів
Lviv
Keywords: finely dispersed bulky materials
gravitational outflow
discharge hopper hole
elementary volume of the dome
autohesion force
passive stress state
Number of pages: 9
Page range: 20-28
Start page: 20
End page: 28
Abstract: The variability of physical and mechanical properties of finely dispersed bulky materials during processing and storage, the manner and height of filling the tanks; the terms and conditions of storage have a decisive influence on the choice of parameters of the discharge hoppers of bunkers with gravitational outflow. Therefore, the purpose of the article wasto justify the geometric parameters of the discharge hopper to provide a gravitational outflow of finely dispersed bulky materials. The geometrical parameters of the discharge hoppers were determined through mathematical simulation of the flow outflow of materials under the influence of gravity forces and the analysis of the tense state of bulky materials in the zone of outflow. As a result of mathematical simulation, the maximum diameter of the outlet of the hopper hole is determined, that implements the effect of "self-locking" the flow of the product is realized. The influence of physical and mechanical characteristics of finely dispersed bulky materials and angles the conical discharge hopper hole on the size of the outlet during the gravitational outflow is established. The mathematical model of the gravitational outflow of materials with conical discharge hopper hole, which takes into account the complexity of the nature of physical and mechanical connections between particles of materials is developed in the article. The research results allow to design bunkers for storage of finely dispersed bulky materials, to predict their behaviour with gravitational outflow and to ensure reliable operation of bunkers during their unloading. Also, in the future, it is advisable to carry out mathematical simulation of the process of gravitational outflow of finely dispersed bulky materials from bunkers of various cross sections and with different forms of the discharge hoppers.
URI: http://ena.lp.edu.ua:8080/handle/ntb/49616
Copyright owner: © Національний університет “Львівська політехніка”, 2019
© Shоlovii Yu., Maherus N., 2019
References (Ukraine): 1. A. D. Zimon, Autogezija sypuchih matierialov [Autohesion bulk materials]. Moscow, Russia: Himija Publ., 1978. [in Russian].
2. E. V. Dzhenike, Skladirovanije i vypusk sypuchih matierialov [Warehousing and release of bulk materials]. Moscow, Russia: Mir Publ., 1968. [in Russian].
3. Yu. P. Sholovij, and N. I. Prokopets, “Modeliuvannia povedinky dribnodyspersnogo materialu pry jogo vytikanni iz konichnoji lunky dozatora” [“Modeling the behavior of finely dispersed material when it flows from a conical well of the dispenser”], in Proc. 4th International Conference of Young Scientists EMT-2013, Lviv, Ukraine, November 21-23, 2013, pp. 42–43. [in Ukrainian].
4. Yu. P. Sholovij, and N. I. Prokopets, “Obgruntuvannia konstruktyvnyh parametriv lunky dozatora dlia dribnodyspersnyh sypkyh materialiv” [“The substantiation of the design parameters of the hopper hole for finely dispersed bulk materials”], Avtomatyzatsija vyrobnychyh protsesiv u mashynobuduvanni ta pryladobuduvanni [Industrial Process Automation in Engineering and Instrumentation]. Lviv, Ukraine, 2013. – № 47, pp. 45–50. [in Ukrainian].
5. A. V. Katalymov, and V. A. Liubartovich, Dozirovanije sypuchih i viazkih materialov [Dosing of bulk and viscous materials]. Leningrad, Russia: Himija Publ., 1990. [in Russian].
6. Yu. P. Sholovij, and N. I. Prokopets, “Osoblyvosti dozuvannia dribnodyspersnyh materialiv” [“Features of dosing of finely dispersed materials”], in Proc. 9th scientific-practical conference of young scientists “Novitni tehnologiji pakuvannia”, Kyiv, Ukraine, April 12, 2013, pp. 27–29. [in Ukrainian].
7. Yu. I. Makarov, Apparaty dlia smeshenija sypuchih matierialov [Apparatus for mixing bulk materials], Moscow, Russia: Mashinostroenie Publ., 1973. [in Russian].
8. G. Kache, “Verbesserung des Schwerkraftflusses kohäsiver Pulver durch Schwingungseintrag” [“Improvement of the gravity flow of cohesive powders due to vibration”], Dissertation, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Germany, 2009. [in German].
9. G. Kache, and J. Tomas, “Ausfliessen eines kohäsiven, hochdispersen Pulvers” [“Outflow of a cohesive high-dispersed powder”], Schüttgut [Bulk Materials], no. 6, pp. 246–252, 2010. [in German].
10. D. Schulze, Pulver und Schüttgüter. Fliesstigenschaften und Handhabung [Powder and bulk materials. Flow properties and handling]. Berlin, Germany: Springer, 2005. [in German].
11. G. A. Roginskij, Dozirovanije sypuchih matierialov [Dosing of bulk materials]. Moscow, Russia: Himija Publ., 1978. [in Russian].
12. T. Kollmann, “Schwingungsinduziertes Fließen feinstkörniger, kohäsiver Pulver” [“Vibration-induced flow of fine-grained cohesive powders”], Dissertation, Ottovon-Guericke-Universität Magdeburg, Magdeburg, Germany, 2002.
References (International): 1. A. D. Zimon, Autogezija sypuchih matierialov [Autohesion bulk materials]. Moscow, Russia: Himija Publ., 1978. [in Russian].
2. E. V. Dzhenike, Skladirovanije i vypusk sypuchih matierialov [Warehousing and release of bulk materials]. Moscow, Russia: Mir Publ., 1968. [in Russian].
3. Yu. P. Sholovij, and N. I. Prokopets, "Modeliuvannia povedinky dribnodyspersnogo materialu pry jogo vytikanni iz konichnoji lunky dozatora" ["Modeling the behavior of finely dispersed material when it flows from a conical well of the dispenser"], in Proc. 4th International Conference of Young Scientists EMT-2013, Lviv, Ukraine, November 21-23, 2013, pp. 42–43. [in Ukrainian].
4. Yu. P. Sholovij, and N. I. Prokopets, "Obgruntuvannia konstruktyvnyh parametriv lunky dozatora dlia dribnodyspersnyh sypkyh materialiv" ["The substantiation of the design parameters of the hopper hole for finely dispersed bulk materials"], Avtomatyzatsija vyrobnychyh protsesiv u mashynobuduvanni ta pryladobuduvanni [Industrial Process Automation in Engineering and Instrumentation]. Lviv, Ukraine, 2013, No 47, pp. 45–50. [in Ukrainian].
5. A. V. Katalymov, and V. A. Liubartovich, Dozirovanije sypuchih i viazkih materialov [Dosing of bulk and viscous materials]. Leningrad, Russia: Himija Publ., 1990. [in Russian].
6. Yu. P. Sholovij, and N. I. Prokopets, "Osoblyvosti dozuvannia dribnodyspersnyh materialiv" ["Features of dosing of finely dispersed materials"], in Proc. 9th scientific-practical conference of young scientists "Novitni tehnologiji pakuvannia", Kyiv, Ukraine, April 12, 2013, pp. 27–29. [in Ukrainian].
7. Yu. I. Makarov, Apparaty dlia smeshenija sypuchih matierialov [Apparatus for mixing bulk materials], Moscow, Russia: Mashinostroenie Publ., 1973. [in Russian].
8. G. Kache, "Verbesserung des Schwerkraftflusses kohäsiver Pulver durch Schwingungseintrag" ["Improvement of the gravity flow of cohesive powders due to vibration"], Dissertation, Otto-von-Guericke-Universität Magdeburg, Magdeburg, Germany, 2009. [in German].
9. G. Kache, and J. Tomas, "Ausfliessen eines kohäsiven, hochdispersen Pulvers" ["Outflow of a cohesive high-dispersed powder"], Schüttgut [Bulk Materials], no. 6, pp. 246–252, 2010. [in German].
10. D. Schulze, Pulver und Schüttgüter. Fliesstigenschaften und Handhabung [Powder and bulk materials. Flow properties and handling]. Berlin, Germany: Springer, 2005. [in German].
11. G. A. Roginskij, Dozirovanije sypuchih matierialov [Dosing of bulk materials]. Moscow, Russia: Himija Publ., 1978. [in Russian].
12. T. Kollmann, "Schwingungsinduziertes Fließen feinstkörniger, kohäsiver Pulver" ["Vibration-induced flow of fine-grained cohesive powders"], Dissertation, Ottovon-Guericke-Universität Magdeburg, Magdeburg, Germany, 2002.
Content type: Article
Appears in Collections:Ukrainian Journal of Mechanical Engineering And Materials Science. – 2019. – Vol. 5, No. 1



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