Structural Model of Straw Briquetting Machine with Vertical Ring Die and Optimization of Briquetting Performance

Chen, Shuren; Zhao, Yutao; Tang, Zhong; Ding, Hantao; Su, Zhan; Ding, Zhao

doi:10.3390/agriculture12050736

Cited by 7 publications

(5 citation statements)

References 31 publications

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“…The three-factor, three-level orthogonal test simulation of Box-Behnken design using Design-Expert software was carried out for 17 simulations and the maximum equivalent force of the cutter to cut the stalks, the peak of the fluctuation of the forward speed of the cutter, and the maximum contact force of the cutter on the stalks were counted during the simulation, as shown in Table 3. Mathematical equations obtained by fitting the experimental data may produce inaccurate results, so it is necessary to use analysis of variance (ANOVA) to test the significance and accuracy of the models (Chen et al, 2022;Rashidi et al, 2021;Sarkar & Raheman, 2023). The ANOVA for the maximum equivalent force model of the stalk, the peak fluctuation model of the forward speed fluctuation of the cutter, and the maximum contact force model are shown in Tables 4-6 below.…”

Section: Multifactor Testmentioning

confidence: 99%

Structural Form and Field Operation Effect of Crawler Type Broccoli Harvester

Yu,

Wang,

Tang

et al. 2023

Eng. Agríc.

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Broccoli is increasingly favored by consumers as it is rich in vitamins and many other bioactive compounds. However, existing large tractor-drawn vegetable harvesting machinery is more suitable for large farmland and farm cultivation patterns. Therefore, this paper develops tracked broccoli harvesting equipment for small farmland and tests the ability to harvest broccoli. The tracked broccoli harvester developed in this paper is capable of traveling on its own in the field, cutting the stalks and transporting the broccoli bulbs. This paper analyses the working process of the cutting device and designs the working parameters. Through the cutting bench experiment, the optimal working parameters of the cutting device were determined as 456 r/min of rotational speed, 8.312 mm of overlap, and 0.255 m/s of pusher speed. In the field test, the broccoli leakage rate was 4.8%, the cutting qualification rate was 81.6%, the transport qualification rate was 95.62%, the damage rate was 3.96%, and the total loss rate was 8.55%. This structural model is an important technical support for broccoli harvesting equipment in China.

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Section: Multifactor Testmentioning

confidence: 99%

Structural Form and Field Operation Effect of Crawler Type Broccoli Harvester

Yu,

Wang,

Tang

et al. 2023

Eng. Agríc.

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“…При виготовленні брикетів важливо враховувати, що пресована суміш може складатися з різних компонентів, що мають різне походження та структуру з різноманітними фізико-механічними властивостями. Такі властивості, як пружність, в'язкість та фракційний склад матеріалів, що піддаються пресуванню, мають значний вплив на процес брикетування [1][2][3][4][5].…”

Section: постановка проблемиunclassified

“…E = -24,55 + 8,5×10 -2 ρ -5,15×10 -5 ρ. (7) Такий вид кривої (перекинута парабола) пояснюється тим, що енергетична щільність брикетів є лінійною функцією від їх щільності, яка у свою чергу є параболічною залежністю від вмісту зв'язуючої речовини(1).Рис. 3.…”

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Results of Laboratory Studies on the Process of Making Fuel Briquettes From Rapeseed Straw

Govorukha,

Luts,

Kyselov

2023

Engineering, Energy, Transport Aic

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When producing fuel briquettes, the main material used for pressing is agricultural waste, specifically plant residues, which most often consist of straw from cereal and small-seeded crops. Therefore, the success of the briquetting process largely depends on the properties of their physico-mechanical component. Within the variation of the studied factors, as the average length of rapeseed straw particles decreases, the density and energy density of the briquettes increase. Also positively affecting these indicators are the increase in the content of binding material (clay or manure), the cone angle of the matrix, and the ratio of the cross-sectional area of the matrix channel to its perimeter. Increasing the moisture content of the pressed material leads to an increase in the density of briquettes and a decrease in their energy density. To ensure the production of briquettes with a density of over 600 kg/m², both with and without binding material, a round matrix should be used. The optimal temperature for heating the matrix during pressing is 160-180°C. This results in the release of lignin from rapeseed straw, which also acts as a binding agent. Furthermore, it enhances plasticization, accelerating relaxation processes, reducing friction coefficients, lowering the energy intensity of the process, and enabling the achievement of the required briquette quality. Pressing at a heating temperature of 160-180°C leads to stable production of rapeseed straw briquettes with a moisture content of the initial material of up to 16%. In the case of particle size reduction to 20 mm, briquetting can be performed without adding a binding agent. The most acceptable initial moisture content of the briquetting mass is 8-12%. Higher moisture results in fluffy briquettes, while lower moisture leads to less density. With moisture exceeding 16%, intensive steam formation occurs in the pressing chamber, which is dangerous during operation.

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“…Briquetting machine with vertical ring die. The briquetting machine was driven by an electric motor, so the spindle speed of the briquetting machine was controlled by adjusting the motor speed with a frequency converter [15]. Therefore, to solve such problems, the researchers developed a semi-automatic mushroom spawn mixing and pressing machine covering the operations from mixing the mushroom substrate in the mixing tank, filling the mushroom substrate into bags, and pressing to obtain the mushroom spawn blocks.…”

Section: Introductionmentioning

confidence: 99%

Development of Mixing and Pressing Processes of Split-Gill Mushroom Spawn Blocks

Worapong Boonchouytan,

Jaknarin Chatthong,

Nantapong Pongpiriyadecha

2023

Proc. eng. technol. innov.

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This study aims to develop the mixing and pressing processes of split-gill mushroom spawn blocks through the development and construction of a semi-automatic mushroom spawn mixing. The developed machine uses a 0.5 hp motor to drive the mixing tank and the press cylinder, which are connected to a 1:60 reduction gear. The results show that the semi-automatic mushroom spawns mixing and pressing machine developed in this study are within the standard ranges, that the split-gill mushroom spawn blocks with an average weight of 598 g, an average height of 10.2 cm, and an average density of 0.33 g/cm3. As for production capacity, manual pressing produced 40 mushroom spawn blocks per hour while the developed machine produced 112 mushroom spawn blocks per hour, which is 2.8 times faster.

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Structural Model of Straw Briquetting Machine with Vertical Ring Die and Optimization of Briquetting Performance

Cited by 7 publications

References 31 publications

Structural Form and Field Operation Effect of Crawler Type Broccoli Harvester

Structural Form and Field Operation Effect of Crawler Type Broccoli Harvester

Results of Laboratory Studies on the Process of Making Fuel Briquettes From Rapeseed Straw

Development of Mixing and Pressing Processes of Split-Gill Mushroom Spawn Blocks

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