Design and Motion Process of Air-Sieve Castor Cleaning Device Based on Discrete Element Method

Hou, Jiafa; Liu, Xu; Zhu, Hongjie; Mao, Zhi; Tang, Zhuoqi; Yu, Yachen; Jin, J.; Wang, Wei

doi:10.3390/agriculture13061130

Cited by 3 publications

(3 citation statements)

References 31 publications

(33 reference statements)

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“…During harvester operation, the sieve through the shaking plate reciprocating vibration causes material longitudinal and transverse uniform distribution and upward sieve transport, the upper and lower sieves form a sieve box and do reciprocating motion, so that the grains are separated from the material and long impurities, with light impurities in the sieve box, and by means of the airflow are transported backward and discharged out of the machine [13,14]. During this process, the threshing drum and separation concave plate work together to remove the grains.…”

Section: Structure and Working Principle Of Harvester Cleaning Devicementioning

confidence: 99%

Research and Experiment on Airflow Field Control Technology of Harvester Cleaning System Based on Load Distribution

Li,

He,

Yue

et al. 2024

Agriculture

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The wind sieve cleaner is widely used in the screening system of combine harvesters due to its compact structure and efficient screening capability. In order to study more deeply the feeding load distribution of the combine harvester and the influence of the airflow field on the clearing effect, a mechanical analysis method was adopted to analyze the dynamics of the material in the inclined airflow, and a kinetic model was established. At the same time, the motion state of the material in the airflow field was explored, and combined with the actual orthogonal test, the response surface model of factors and indicators was established. Experimental validation was carried out. It provides an important research foundation and theoretical basis for optimizing the structural parameters of the screening system and improving its operational performance.

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Section: Structure and Working Principle Of Harvester Cleaning Devicementioning

confidence: 99%

Research and Experiment on Airflow Field Control Technology of Harvester Cleaning System Based on Load Distribution

Li,

He,

Yue

et al. 2024

Agriculture

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“…Different types of holes are used for this purpose. The industrial use of perforated surfaces in separating equipment is typical for technological processes in the following industries: mining and construction [4,5], agricultural and food [6,7], chemical and pharmaceutical [8].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Natural Oscillations of Perforated Vibrating Surfaces with Holes of Complex Geometry

Kharchenko,

Samborski,

Kharchenko

et al. 2023

Adv. Sci. Technol. Res. J.

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The widespread use of perforated vibrating surfaces in various industries requires maximum productivity and construction reliability. The research task is to determine the significant factors and their degree of influence on the natural oscillations of vibrating surfaces with multiple holes of complex geometry. For this purpose, studies were carried out for three samples of plates: non-perforated, with basic round holes and holes of complex geometry in the form of a five-petal epicycloid. Studies of the natural oscillations of perforated vibrating surfaces have been conducted using the finite element method in Abaqus, which has proved sufficient accuracy of calculations. The dependencies of the natural oscillation frequency of perforated surface samples on their thickness, partition width between the holes, material type, and fixing method have been obtained. In addition, the analysis involved the study of eight modes of oscillation common in practice. The dependencies of the natural oscillation frequency of perforated surface on the relative parameters of ligament efficiency and stiffness coefficient have also been obtained. These parameters take into account the ratios of the partition width between the holes to the plate thickness and the dimensions of the holes. The research results allow to obtain levels of influence of the perforated vibrating surface parameters on their natural oscillations frequency. The obtained research results make it possible to further determine the absence of damage between the holes and predict the durability of perforated vibration surfaces in the presence of holes of complex geometry.

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“…Hou et al developed an air-screen castor cleaning device. Based on the discrete element method, the operating parameters of the cleaning device were optimized, and the parameters of the maximum screening efficiency combination, the minimum loss rate combination, and the best cleaning effect were obtained [14]. Chen et al carried out an experiment using the CFD-DEM coupling method to carry out the numerical simulation of walnut shell-kernel cleaning, and the results showed that in the vertical air duct, the flow rate of the walnut shell would fluctuate around a fixed value, and the settlement rate of the walnut kernels would decrease with the increase in particle concentration and then gradually stabilize [15].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Optimization of Peanut Sheller Air–Screen Cleaning Device

Liu,

Yu,

Wang

et al. 2023

Agriculture

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To improve its cleaning performance, the peanut sheller’s air–screen cleaning device was used as the research object, and a numerical simulation was carried out. A scheme was proposed to optimize the installation angle of the screen surface of the air–screen cleaning device, and the influence of the airflow velocity of the sieve surface before and after the structural improvement of the machine on the airflow distribution of the whole chamber was evaluated. At the same time, the computational fluid dynamics–discrete element method (CFD–DEM) of coupling simulation was used to carry out single-factor simulation tests on the improved air–screen cleaning device, analyze the movement trajectory, velocity, and displacement of the extrudates in the cleaning chamber, characterize the separation law of extrudates, and determine the parameter ranges for each factor. In addition, based on the central composite Box–Behnken design, an orthogonal simulation test was carried out with three factors, including fan speed, amplitude, and vibration frequency, and the influence of each factor on the kernel loss rate and impurity rate was investigated. Furthermore, the influencing factors were optimized, and the optimal parameter combination was obtained; when the fan speed was 1682.72 r/min, the amplitude was 3.74 mm, and the vibration frequency was 492.86 Hz, it was more conducive to the cleaning of kernels. Finally, the accuracy of the simulation and optimization methods was verified via the machine test, and the optimal parameter combination was obtained: at a fan speed of 1680 r/min, an amplitude of 3.7 mm and a vibration frequency of 490 Hz were achieved, and the kernel loss rate and impurity rate were 2.01% and 2.42%, 3.71 and 4.42 percentage points lower than those before optimization, respectively.

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Design and Motion Process of Air-Sieve Castor Cleaning Device Based on Discrete Element Method

Cited by 3 publications

References 31 publications

Research and Experiment on Airflow Field Control Technology of Harvester Cleaning System Based on Load Distribution

Research and Experiment on Airflow Field Control Technology of Harvester Cleaning System Based on Load Distribution

Numerical Study of the Natural Oscillations of Perforated Vibrating Surfaces with Holes of Complex Geometry

Numerical Simulation and Optimization of Peanut Sheller Air–Screen Cleaning Device

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