Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/85132
Type of publication: Straipsnis kitose duomenų bazėse / Article in other databases (S4)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Jasinskas, Algirdas;Ferevičius, Darius
Title: Siloso tankinimo nekryptiniu vibratoriumi tyrimas = Research of silage thickening using vibrator of undirected action
Other Title: Research of silage thickening using vibrator of undirected action
Research of silage thickening using vibrator of undirected action
Is part of: Žemės ūkio inžinerija. , [T.] 36, Nr. 2 (2004)
Extent: p. 21-31
Date: 2004
Keywords: Silosas;Vibracinis tankinimas;Inercinis-nekryptinis vibratorius;Vibravimo dažnis;Konteinerinė saugykla;Tankis;Slėgis;Silage;Vibratory thickening;Centrifugal-undirected action vibrator;Vibration frequency;Container store;Density;Pressure
Abstract: Analitiškai apžvelgti vibracinio tankinimo būdai ir naudojami įrenginiai, parinkti silosui tankinti tinkantys vibraciniai sutankintuvai, apžvelgtos siloso saugyklos įvairių dydžių ūkiams. Išbandytas inercinis-nekryptinis vibratorius silosui tankinti. Tyrimais nustatytos žolės masės tankio kitimo priklausomybės nuo tankinimo vibratoriumi trukmės esant skirtingiems vibravimo dažniams, taip pat žolės santykinio slėgio priklausomybės nuo vibravimo dažnio. Nustatyta, kad vibracinio tankinimo metu žolės sluoksnis intensyviai tankėja 5-10 min. Toliau tankinti žolės sluoksnį netikslinga, nes jo metu nepastebėta žymesnio tankio ar santykinio slėgio padidėjimo. Ištyrus žolės sutankinimo ir žolės santykinio slėgio priklausomybę nuo vibravimo dažnio nustatyta, kad efektyviausiai vibratorius dirba esant 43,96 s-1 vibravimo dažniui. Dėl to nekryptiniais vibratoriais žolę tikslinga tankinti vibravimo dažniu, artimu šiam dažniui. Eksperimentiniais tyrimais nustatyta, kad inerciniu-nekryptiniu vibratoriumi pasiekiamas 370-400 kg/m³ žolės tankis. Tai nepakankamas kiekis žolei silosuoti, taip pat šis sutankintuvas ant žolės sluoksnio dirba nestabiliai. Dėl to tyrimus tikslinga tęsti su kryptinio tipo vibratoriumi
Vibratory thickening methods and devices were analytically reviewed, the vibratory thickeners, which are suitable for silage thickening, were chosen, the silage stores for different size farms were reviewed. The centrifugal - undirected action vibrator for silage thickening was tested. The dependence of the variation of grass mass density on term of vibratory thickening, when there is different vibration frequency, and the dependence of on vibration frequency was established by researches. It was established that during vibratory thickening grass layer intensively thickens for 5-10 min. Futher grass layer thickening is inexpedient, because there were no significant density or comparative pressure change while proceeding it. After investigation of dependence of grass thickening and grass comparative pressure on vibration frequency, it was established that most effectively vibrator works at 43,96 s-1 frequency. Consequently it is reasonable to thicken grass using undirected vibrator at last mentioned frequency, or close to it. It was established as a result of research, that using centrifugal - undirected action vibrator it is possible to reach 370-400 kg/m³ grass density. It is insufficient density for grass silage, also this thickener works unstable. Consequently it is reasonable to proceed futher researches with direct type vibrator
Internet: https://hdl.handle.net/20.500.12259/85132
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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