Optimization of the Separation Parameters and Indicators of Separation Efficiency of Buckwheat Seeds

Konopka, S.; Choszcz, D.; Markowski, Piotr

doi:10.3390/su9112134

Cited by 10 publications

(7 citation statements)

References 7 publications

(6 reference statements)

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“…In most studies of separators for grain cleaning there is conducted an experimental assessment of the efficiency of the existing installations [2; 3; 6], or prototypes [7; 13]. The second part of the research is aimed at a theoretical study of the impact of individual structural elements of the separating devices upon productivity or efficiency [13][14][15], as well as determining the loss of whole grain [6]. There are also articles on how to determine the aerodynamic characteristics of grain [5], but there are no universal mathematical models that for particular air flow parameters could help determine the behavior of seeds in an ascending vortex flow.…”

Section: Fig 4 Simulation Of Grain Trajectories In a Pneumatic Vortex Air Flowmentioning

confidence: 99%

Theoretical study of pneumatic separation of grain mixtures in vortex flow

Аdаmchuk¹,

Bulgakov

Ivanovs

et al. 2021

Engineering for Rural Development

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The article presents the results of the research on the justification of the pneumatic centrifugal method and design of the device for separation of grain mixtures in the grain-cleaning unit (module) of pneumatic centrifugal grain separators. The grounded initial requirements for the technological indicators and designkinematic parameters of such a device would provide the productivity of the unit up to 60 t•h -1 and the qualitative indicators on the primary purification of the wheat grain, which is the basis for a family of universal grain separators of new generation with productivity 50, 100 and 200 t•h -1 . For the developed design of the pneumatic centrifugal separator with the created vortex flow the equivalent scheme of interaction of the material particle of the grain mixture with the pneumatic vortex flow during its movement in the specified flow was made. The conditions of its motion and forces acting during this interaction were determined for the material particle. The components of its velocities during its motion in radial and vertical directions have also been determined. The necessary coordinate systems were introduced. To describe the motion of a material particle along a curvilinear trajectory the system of differential equations was composed. As a result of differential equations system solving the conditions of material particle distribution in three directions of motion depending on the physical and mechanical properties of the material particles have been determined. Constructed graphical dependences allowed to determine the design and kinematic parameters of the developed new design of the pneumatic centrifugal separator with vortex flow.

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Section: Fig 4 Simulation Of Grain Trajectories In a Pneumatic Vortex Air Flowmentioning

confidence: 99%

Theoretical study of pneumatic separation of grain mixtures in vortex flow

Аdаmchuk¹,

Bulgakov

Ivanovs

et al. 2021

Engineering for Rural Development

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“…A computer program based on genetic algorithms was designed for the needs of the study (Figure 3) to optimize non-linear, multi-modal and multiple-criteria mathematical models [33,34]. The optimization task was used to determine the values of working parameters (s, k, q, α) during the separation of buckwheat seeds and wild radish siliques, for which the objective function (F) describing the indicators of separation efficiency (ε 1 , ε 2 , ε) fulfills the following equations: The appropriate forms of the objective function (stochastic models) for optimization were found (Equations (1)-(3)).…”

Section: Buckwheat Seeds Wild Radish Siliquesmentioning

confidence: 99%

Optimization of the Separation Efficiency of Buckwheat Seeds and Wild Radish Siliques in a Grader with Indented Pockets

et al. 2018

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The separation parameters and indicators of separation efficiency of a mixture of two types of seeds in a grader equipped with five interchangeable cylinders with indented pockets of various depths were optimized. The analyzed mixture was composed of buckwheat seeds and wild radish siliques, which are difficult to separate. A self-made computer program based on genetic algorithms was developed for the needs of the study. The value of the optimized indicator of separation efficiency (ε = 0.993), which is a product of partial indicators (buckwheat seed yield ε 1 and separation efficiency of wild radish siliques ε 2 ), was highest at the following operating parameters: Depth of indented pocket s = 2.9 mm, kinematic index k = 0.25, static load rating of a cylinder q = 0.1, and inclination angle of the working edge of the trough α = 12.0 • .

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“…Many weed plants that have severely clogged crops have almost come to naught with an improvement in the quality of seed purification. The quality of the separation process can be improved by a combination of vibration and additional factors such as rising air flow [4] and electrification of the sorted seeds [5], etc. In various variations during cleaning, the physical and mechanical properties of seeds of cultivated and weed plants are involved -geometric dimensions, windage, specific gravity, degree of surface roughness, etc.…”

Section: Introductionmentioning

confidence: 99%

Cleaning of grain sowing material from weed seeds for the sustainable development of agriculture

Alekseev

Mitrukhin

Фадеев

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article deals with the optimization of cleaning grains and seeds of agricultural crops from weed seeds. The process of cleaning grain material by one-dimensional horizontal vibrations depends on the friction coefficients of the seeds against each other. It is optimized by selecting the amplitude and angle, relative to the vertical, under which the cylindrical container containing the grain mixture is located. Experiments were carried out with almost all types of seeds most widely used in the domestic agricultural industry. The cleaning process was investigated only at amplitudes smaller than the seed size. The seeds of cultivated plants and weeds move upward or downward, depending on the specific gravity. Calculations show that with correctly selected values of the amplitude and angle, the average trajectories of the grains are practically straight lines parallel to the generatrix of the cylinder containing the seeds. Studies have shown that the maximum cleaning speed is achieved under the condition that the angle of inclination of the cylindrical vessel is equal to the natural slope of the seeds with the highest specific gravity.

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Optimization of the Separation Parameters and Indicators of Separation Efficiency of Buckwheat Seeds

Cited by 10 publications

References 7 publications

Theoretical study of pneumatic separation of grain mixtures in vortex flow

Theoretical study of pneumatic separation of grain mixtures in vortex flow

Optimization of the Separation Efficiency of Buckwheat Seeds and Wild Radish Siliques in a Grader with Indented Pockets

Cleaning of grain sowing material from weed seeds for the sustainable development of agriculture

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