Experimental evaluation of energy parameters of volumetric vibroseparation of bulk feed from grain

Palamarchuk, Igor; Rogogvskii, Ivan; Titova, Liudmyla; Omelyanov, Oleg

doi:10.22616/erdev.2021.20.tf386

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…As it has been already noted, the structural-mechanical indicators of the material significantly are significantly affected by moisture content. Table 1 shows the values of rheological coefficients for the selected material (dent corn grain) depending on the moisture [11][12][13].…”

Section: Fig 2 Proposed Rheological Model: A) Maize Grain; B) Shell; ...mentioning

confidence: 99%

Energy Intensity of the Process of Destruction of Feed Grain in Conditions of Dynamic Contact Interaction With the Edge of the Disc Impactor

Kupchuk

Poberezhets

Kravets

et al. 2022

Engineering, Energy, Transport Aic

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In the feed industry raw material, grinding is an integral part of the production cycle. However, this process is characterized by significant energy consumption – from 3 to 100 kW * hour per ton of finished goods, and only a part of it is directly spent on grinding. Therefore, this scientific research is aimed at minimizing the consumption of energy resources by technological machines – crushers and improving the energy efficiency of the process in general is an urgent issue. A powerful modern research method of studying complex objects is system analysis, which enables to modernize existing machines and design new ones without conducting a large number of expensive physical experiments. Unfortunately, this method is not yet widely used in the research and design of new machines for processing agricultural products, since there are no developed and substantiated engineering theories describing the behaviour of the processed material in the workspace of the technological machine. Grinding grain with a moisture content indicator at the level higher than the base condition, there is a low efficiency of the method of impact grinding, that is determined by the increased plasticity of the material and an increase in the value of the marginal deformation, which can lead the grain towards destruction. A partial solution of this problem is possible when combining the method of cutting and hammering, which has formed the basis of a technical solution implemented in the scientific laboratory of Vinnytsia National Agrarian University, where the design has been developed and experimental verification of the vibrating crusher have been carried out. Further improvement of the energy efficiency of the technological operation of grain grinding requires theoretical researches of the dynamics of the process, and determining the minimum amount of energy required for destruction. The article deals with the laws of solid mechanics and the use of rheological methods in researching disperse systems, it presents the values of absolute deformation and the work that is carried out during the destruction of maize grain under the influence of applied impact-cutting load in analytical and graphic form. Moreover, the results of this research help us to establish the marginal values of plastic and elastic absolute deformations occurring in the material, which is a prerequisite for the theoretical substantiation of the grinding law.

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Section: Fig 2 Proposed Rheological Model: A) Maize Grain; B) Shell; ...mentioning

confidence: 99%

Energy Intensity of the Process of Destruction of Feed Grain in Conditions of Dynamic Contact Interaction With the Edge of the Disc Impactor

Kupchuk

Poberezhets

Kravets

et al. 2022

Engineering, Energy, Transport Aic

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“…To eliminate this shortcoming, various structural and technological methods are used, in particular, the stratification of the grain mixture by an air flow on the scaly surface of the feeding device [14][15][16]. According to the authors, this makes it possible to increase the specific load and improve the quality of cleaning.…”

Section: Introductionmentioning

confidence: 99%

To the Theory of Grain Motion in an Uneven Air Flow in a Vertical Pneumatic Separation Channel with an Annular Cross Section

Stepanenko¹,

Kotov

Kuzmych³

et al. 2022

Processes

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The possibilities of the action of uneven air flows on the grain material in the separating channels are still not used enough. The reason for this is the insufficient knowledge of the processes of interaction of the components of the grain material with an uneven air flow. The purpose of the research is to increase the efficiency of grain material separation according to aerodynamic properties by purposefully changing the diagram of air velocities in the channel sections using the actions of lateral and aerodynamic forces. The separation efficiency of grain material components was determined by trajectory analysis. The different geometry of the pneumatic separation channel was studied. The study of the distribution of air velocity and air pressure vectors in a vertical annular channel was carried out using the FlowVision software. It has been established that a change in the air velocity diagram can be implemented both by changing the geometric parameters of the channel and by additional distributed air supply through the perforation in the side walls of the pneumatic channel. Based on the analysis of the velocity field, an improved scheme of a pneumatic gravitational separator is proposed for separating grain material into three fractions according to aerodynamic characteristics.

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Substantiation of amplitude-frequency characteristics and design parameters of the vibration exciter of the separator of volume vibrations

Palamarchuk¹,

Vasyliv²,

Mushtruk³

et al. 2021

animal

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The main effects of the developed design for vibratory separator: the increased driving force in the process of bulk material separation in this work, achieved by providing the working cylindrical-conical container with vibrational motion; improving the conditions for the passage of product particles through openings, achieved by providing the sieve surface with volume oscillations; reduction of energy consumption and improvement of operating conditions for support nodes during the operation of the designed vibrating screen, achieved due to the installation of additional elastic elements between the separator body and bearing assemblies of the vertical drive shaft in vibration exciter. Providing the working bodies of the designed vibrating screen with volume oscillating motion allows increasing the performance and quality of the separation process of solid bulk materials. To determine the rational parameters for vibration screening process, the equations of motion of working bodies as a conical sieve surface were obtained using the method of the Lagrange equations of the second order. When applying solutions of the Cauchy problem for linear nonhomogeneous differential equations, the solution of the latter was obtained. The obtained dependences of oscillation amplitudes, vibration velocity and vibration acceleration, and the intensity of oscillating motion allowed us to perform a mathematical analysis for power and energy parameters of vibration drive in the developed separator. The inclined placement of the conical sieve surface allows for spatial gyration or circular translational motion, which makes it possible to realize the advantages of volumetric separation of bulk materials. The results of the conducted analytical study made it possible to substantiate the optimal inclination angle for working sieve surface. Based on our analysis, the design parameters of vibration exciter were substantiated and clarified, and the design of this technical system was demonstrated.

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Experimental evaluation of energy parameters of volumetric vibroseparation of bulk feed from grain

Cited by 8 publications

References 5 publications

Energy Intensity of the Process of Destruction of Feed Grain in Conditions of Dynamic Contact Interaction With the Edge of the Disc Impactor

Energy Intensity of the Process of Destruction of Feed Grain in Conditions of Dynamic Contact Interaction With the Edge of the Disc Impactor

To the Theory of Grain Motion in an Uneven Air Flow in a Vertical Pneumatic Separation Channel with an Annular Cross Section

Substantiation of amplitude-frequency characteristics and design parameters of the vibration exciter of the separator of volume vibrations

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