Analysis of Influencing Factors and Operation Quality Evaluation Strategy of Straw Crushing and Scattering System

Wang, Bokai; Feng, Wenjiang; Ma, Junteng; Yang, Hongchen; Hu, Zhichao

doi:10.3390/agriculture12040508

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…Use Design-Expert12 software to design response surface experiments. The experiment is set up with three factors and three levels, and the experimental factors are coded as shown in Table 4 [31]. The qualification rate of the number of holes and the damage rate of the seeds are used as the performance indicators of the seed-metering device [32].…”

Section: The Results Of Single-factor Experimentsmentioning

confidence: 99%

Design and Experiment of Double-Row Seed-Metering Device for Buckwheat Large Ridges

Qiao,

Liu,

Wang

et al. 2023

Agriculture

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This article focuses on the low accuracy, poor stability, and other shortcomings of the traditional outer-groove buckwheat seed-metering wheel. A wheel-type large-ridge double-row seed-metering device with inner seed-filling holes was designed. The seed-metering device’s structural composition, working principle, and main technical parameters are clarified. The structural parameters of the seed-metering device shell and the seed-metering wheel are determined based on the force analysis, movement trajectory, and physical characteristics of the buckwheat grains. This experiment uses the JPS-12 metering device performance experiment bench for bench experimenting. The experiment uses the seed-metering device’s rotation speed, the seed position’s height, and the seed wheel’s aperture as experiment factors. Based on the experiment indicators of the qualified rate of number of holes and the grain damage rate, we used Design-Expert12 software to design single-factor, response surface, and verification experiments. The experiment results show that the best parameter combination is a seed-metering device rotation speed of 67 r/min, a seed position height of 115 mm, and a seed wheel aperture of 8 mm. In the optimal parameters, the qualified rate of the number of holes is 90.23%, and the grain damage rate is 0.62%. The experiment indicators meet the operational requirements of the buckwheat seeding device. The design and experimenting of the buckwheat large-ridge double-row seeding device provide a reference for further research on buckwheat seeding.

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Section: The Results Of Single-factor Experimentsmentioning

confidence: 99%

Design and Experiment of Double-Row Seed-Metering Device for Buckwheat Large Ridges

Qiao,

Liu,

Wang

et al. 2023

Agriculture

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Experimental Analysis and Evaluation of Automatic Control System for Evenly Scattering Crushed Straw

et al. 2023

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In order to improve the solution to the unachieved uniformity of straw throwing, the unachieved qualified rate of coverage and the uneven straw throwing in sowing wheat without a tillage process after the rice harvest, and to change this unsatisfied quality of the straw mulch, a set of automatic control systems for straw throwing and covering was designed innovatively. An STM32 microcontroller was used as the main control unit, and the torque-acquisition system was used to collect the torque of the cutter roller shaft in real time and convert it into the conveying signal of the crushed straw. The control system changes the conveying quantity of broken straw in real time, through the dynamic response. This process realizes the optimal dynamic matching between the conveying amount of crushed straw and the impeller speed. We set up two kinds of tests: a straw-crushing-and-throwing system test bench (T6)6 with an automatic control system and a control test bench (C) without an automatic control system. T1 to T5 are, in turn, 0.85 m/s, 1.0 m/s, 1.15 m/s, 1.30 m/s and 1.45 m/s. For the C test, six test levels of 0.85 m/s (C1), 1.0 m/s (C2), 1.15 m/s (C3), 1.30 m/s (C4), 1.45 m/s (C5) and variable speed test (C6) were also set as control tests. The running time of the test-bed at each test level was 10 s; taking the throwing uniformity of the crushed straw and the rate of coverage as indexes, the rapid effect of the throwing-impeller speed on the test indexes at six levels was studied, and compared with the control test. Based on the great practical needs of this problem, this experiment innovatively realized the automatic regulation of the rotating speed of the scattering impeller at different forward speeds. Although some experimental innovations have been made in this study, the smashing knife (group) of the knife roller shaft will hit the ground during the rotation, which brings uncertainty and certain experimental errors to the real-time monitoring of the torque signals. In the next step, more sensors and intelligent algorithms will be added to the system, to reduce the knife throwing.

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Experimental Study on the Cutting and Crushing Performance of Caragana Korshinskii Strips

De,

Li,

Kang

et al. 2024

Agriculture

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Due to their characteristics, Caragana Korshinskii bars are prone to be crushed by kneaded crushed material, and the kneaded crushed material is prone to clogging the sieve, thus affecting the crushing effect. In this paper, we use the Caragana Korshinskii special hammer crusher to carry out the Caragana Korshinskii cutting and crushing test to study the influence of Caragana Korshinskii diameter, cutting length, and moisture content on the crushing effect of Caragana Korshinskii, and obtain the best process parameters through the response surface method. The results were as follows: When the diameter of Caragana Korshinskii strips was in the range of 6–9 mm, the length of the cut section was in the range of 4–8 cm, and the moisture content of Caragana Korshinskii strips was in the range of 10–19%, the Caragana Korshinskii strips crushing effect was the best, and the kneading situation was the lowest. The optimal Caragana Korshinskii crushing effect was achieved when the diameter of the Caragana Korshinskiibar was 6.5 mm, the length of the cut section was 8.4 cm, the moisture content was 19%, the sieve rate of 2 mm was 46.15%, the sieve rate of 4 mm was 66.32%, and the length of the kneaded wire was 3.3 cm.

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Analysis of Influencing Factors and Operation Quality Evaluation Strategy of Straw Crushing and Scattering System

Cited by 4 publications

References 5 publications

Design and Experiment of Double-Row Seed-Metering Device for Buckwheat Large Ridges

Design and Experiment of Double-Row Seed-Metering Device for Buckwheat Large Ridges

Experimental Analysis and Evaluation of Automatic Control System for Evenly Scattering Crushed Straw

Experimental Study on the Cutting and Crushing Performance of Caragana Korshinskii Strips

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