Longitudinal Axial Flow Rice Thresher Performance Optimization Using the Taguchi Technique

Abdeen, Mohamed; Salem, Abouelnadar El.; Zhang, Guozhong

doi:10.3390/agriculture11020088

Cited by 10 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The power requirements increased significantly with the increase of drum revolving speed; these results were the same as the obtained results o [11,24]; on the other hand, it decreased with increasing concave clearance. Figure 9, shows that the consumed power increased from 2.22 kW to 3.02 kW, 1.82 kW to 2.80 kW, and 1.68 kW to 2.55 kW with the increase of drum rotational speed from150 rpm to 300 rpm for 10 mm, 15 mm, and 20 mm concave clearance, respectively.…”

Section: Effect Of the Drum's Rotational Speed On The Power Requireme...supporting

confidence: 88%

Testing, Evaluating and Simulate the Performance of the Newly Designed Drum for a Sunflower Threshing Machine

Ali

Zong

et al. 2022

JERA

View full text Add to dashboard Cite

The stationary thresher machines are widely used worldwide in threshing and separating many crops; they proved to have a high performance, especially in small spaces. The threshing drum is the essential working device of the thresher and plays a fundamental role in threshing efficiency, consumed specific energy, machine productivity, and seeds loss. In this study, a structure of sunflower thresher (open style drum with 45 incline degree loop teeth) was tested, and evaluated for performance under different drum rotational speeds (150, 200, 250, and 300 rpm) and different concave clearances ( 10, 15 and 20 mm). The thresher structure and operating parameters were assessed and optimized concerning damaged and unthreshed seed percentage, threshing efficiency, consumed specific energy, and machine productivity. The obtained results revealed that increasing cylinder rotating speed positively related to threshing efficiency, power requirements, and machine productivity while increasing concave negatively related to threshing efficiency, power requirements, and machine productivity. The highest efficiency of 97.40 %, the maximum productivity of 434.50 kg/h, and the lowest consumed specific energy of 6.85 kW.h/t were obtained at the operational condition of 300 rpm drum rotational speed 10 mm concave clearance. Buckingham's π theorem was followed to find an equation to predict the threshing efficiency theoretically, resulting in an equation with an R2 value of 0.8892. These developments were an excellent choice to uprising the performance of the original thresher drum.

show abstract

Section: Effect Of the Drum's Rotational Speed On The Power Requireme...supporting

confidence: 88%

Testing, Evaluating and Simulate the Performance of the Newly Designed Drum for a Sunflower Threshing Machine

Ali

Zong

et al. 2022

JERA

View full text Add to dashboard Cite

show abstract

“…A drum-shape bar tooth longitudinal axial-flow threshing and separating device was designed with the reference to existing researches [14][15][16], which mainly consisted of a drum-shape cylinder, a concave screen, a top cover with guide plate, a rack, etc., as shown in Figure 1.…”

Section: Structure Of Longitudinal Axial-flow Threshing and Separating Devicementioning

confidence: 99%

Study on the Distribution Pattern of Threshed Mixture by Drum-Shape Bar-Tooth Longitudinal Axial Flow Threshing and Separating Device

Xie

et al. 2021

Agriculture

Self Cite

View full text Add to dashboard Cite

To determine the distribution pattern of the threshing and separating device, the simulation experiment on the distribution pattern of our self-designed drum-shape bar-tooth longitudinal axial flow threshing and separating device was carried out with the help of the EDEM software, by which the axial and radial distribution curve of the threshed mixture along the cylinder was acquired. The three-dimensional distribution of the mass of the threshed mixture was drawn by using the Matlab software, and the bench test was carried out on the self-built small-scale longitudinal axial flow threshing cylinder performance test platform, which was consistent with the simulation conditions. The results showed that the axial and radial distribution of the threshed mixture was uneven, and the axial distribution of the threshed mixture decreased gradually, which was mainly distributed in the first third section of the cylinder. The distribution of the threshed mixture along the radial area of the cylinder was gradually decreasing at first and then increasing, i.e., the total mass of the threshed mixture on the left and right sides was higher than that of the middle area, which was basically consistent with the simulation results. The research can provide reference for the optimization of structural parameters of threshing and separating device and cleaning system.

show abstract

“…This device not only leverages the gentle nature of longitudinal axis threshing and its good adaptability to crops but also meets the requirements of high-feeding threshing [3,4]. Based on the mechanism of longitudinal axis threshing, when the harvested grain mixture falls onto the cleaning sieve through the concave plate, its distribution significantly impacts the cleaning system, especially in cases of larger feeding capacities, where it may lead to local accumulation and, consequently, affect the distribution of airflow, resulting in high impurities and losses [5][6][7][8]. Therefore, conducting research on the distribution of the threshed mixture on the cleaning sieve of the double longitudinal axis threshing device holds significant practical importance for optimizing the fan structure and improving the operational performance of harvesters.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Distribution of the Threshed Mixture by a Double Longitudinal Axial Flow Corn Threshing Device

Yue,

Wang,

et al. 2024

Agriculture

View full text Add to dashboard Cite

In order to determine the distribution pattern of the threshed mixture in the double longitudinal axial flow threshing device, single-factor experiments were conducted on the self-developed experimental platform for the double longitudinal axis threshing device. The experimental factors included drum speed, threshing clearance, and feed rate. The variations in the distribution of the threshed material along the axial and radial directions were examined. The results indicate that the mixed material after threshing exhibits uneven distribution both axially and radially. Along the axial direction, the mass of corn kernels initially increases and then decreases and is predominantly distributed in the front one-third section of the drum. Meanwhile, the mass of corn cobs continuously increases. In the radial direction, the mass of corn kernels and cobs is higher in the middle and on both sides, with the corn kernels being most concentrated in the middle and the corn cobs mostly on the sides. Combining the corn kernel breakage rate and the unthreshed rate, the optimal operating conditions were determined as follows: a drum speed of 400 r/min, a concave clearance of 50 mm, and a feed rate of 16 kg/s.

show abstract

Longitudinal Axial Flow Rice Thresher Performance Optimization Using the Taguchi Technique

Cited by 10 publications

References 17 publications

Testing, Evaluating and Simulate the Performance of the Newly Designed Drum for a Sunflower Threshing Machine

Testing, Evaluating and Simulate the Performance of the Newly Designed Drum for a Sunflower Threshing Machine

Study on the Distribution Pattern of Threshed Mixture by Drum-Shape Bar-Tooth Longitudinal Axial Flow Threshing and Separating Device

A Study of the Distribution of the Threshed Mixture by a Double Longitudinal Axial Flow Corn Threshing Device

Contact Info

Product

Resources

About