Controlled emptying with whole-area dischargers

While emptying complex bulk solids apparatuses and silos, the discharger at container bottom can significantly affect the energy demand of the process and the product quality. At practice, a variety of discharge devices has been developed which differ in the closing mechanism and the design of their...

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Main Authors: Georg Franke, Fabian Weigler, Jochen Mellmann, Peter Müller
Format: Article
Language:deu
Published: Kuratorium für Technik und Bauwesen in der Landwirtschaft e. V. 2016-11-01
Series:Landtechnik
Online Access:http://www.landtechnik-online.eu/ojs-2.4.5/index.php/landtechnik/article/view/3141
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author Georg Franke
Fabian Weigler
Jochen Mellmann
Peter Müller
author_facet Georg Franke
Fabian Weigler
Jochen Mellmann
Peter Müller
author_sort Georg Franke
collection DOAJ
description While emptying complex bulk solids apparatuses and silos, the discharger at container bottom can significantly affect the energy demand of the process and the product quality. At practice, a variety of discharge devices has been developed which differ in the closing mechanism and the design of their fixed inserts. Experimental studies with wheat have shown that some whole-area dischargers cause a distinctive flow profile. Due to their design, these systems offer an unexploited potential to locally influence the bulk solids motion and to realize a controlled emptying. Based on a prototype, a new type of discharge device has been developed at the Leibniz Institute for Agricultural Engineering and Bioeconomy e.V. (ATB). First results show that fixed baffles at the walls lead to a decelerated emptying at the sides of the discharge device. On the other hand, a complete renunciation of these installations results in a significant acceleration in the same regions. In future, it is intended to locally control the bulk solids movement by using an optimized design of the fixed inserts of the closing mechanism. Furthermore, it is intended to investigate how the drying process in mixed-flow grain dryers can be influenced and homogenized by using the newly developed discharge device.
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spelling doaj.art-52bb8d8c98df46a4a80171f5dfa684f62022-12-21T23:47:51ZdeuKuratorium für Technik und Bauwesen in der Landwirtschaft e. V.Landtechnik0023-80822016-11-0171610.15150/lt.2016.31413145Controlled emptying with whole-area dischargersGeorg FrankeFabian WeiglerJochen MellmannPeter MüllerWhile emptying complex bulk solids apparatuses and silos, the discharger at container bottom can significantly affect the energy demand of the process and the product quality. At practice, a variety of discharge devices has been developed which differ in the closing mechanism and the design of their fixed inserts. Experimental studies with wheat have shown that some whole-area dischargers cause a distinctive flow profile. Due to their design, these systems offer an unexploited potential to locally influence the bulk solids motion and to realize a controlled emptying. Based on a prototype, a new type of discharge device has been developed at the Leibniz Institute for Agricultural Engineering and Bioeconomy e.V. (ATB). First results show that fixed baffles at the walls lead to a decelerated emptying at the sides of the discharge device. On the other hand, a complete renunciation of these installations results in a significant acceleration in the same regions. In future, it is intended to locally control the bulk solids movement by using an optimized design of the fixed inserts of the closing mechanism. Furthermore, it is intended to investigate how the drying process in mixed-flow grain dryers can be influenced and homogenized by using the newly developed discharge device.http://www.landtechnik-online.eu/ojs-2.4.5/index.php/landtechnik/article/view/3141
spellingShingle Georg Franke
Fabian Weigler
Jochen Mellmann
Peter Müller
Controlled emptying with whole-area dischargers
Landtechnik
title Controlled emptying with whole-area dischargers
title_full Controlled emptying with whole-area dischargers
title_fullStr Controlled emptying with whole-area dischargers
title_full_unstemmed Controlled emptying with whole-area dischargers
title_short Controlled emptying with whole-area dischargers
title_sort controlled emptying with whole area dischargers
url http://www.landtechnik-online.eu/ojs-2.4.5/index.php/landtechnik/article/view/3141
work_keys_str_mv AT georgfranke controlledemptyingwithwholeareadischargers
AT fabianweigler controlledemptyingwithwholeareadischargers
AT jochenmellmann controlledemptyingwithwholeareadischargers
AT petermuller controlledemptyingwithwholeareadischargers