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

Fu, Jianwei; Xie, Gan; Ji, Chao; Wang, Weikang; Yong, Zhou; Zhang, Guozhong; Zha, Xiantao; Abdeen, Mohamed

doi:10.3390/agriculture11080756

Cited by 10 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason why our distribution patterns are not completely the same is that Chai used a tangential-longitudinal axial drum. Yi [19] and Fu [22] analyzed the distribution of rice. Their results were partially the same as ours.…”

Section: Discussionmentioning

confidence: 99%

“…Chen et al [21] conducted the effects of drum speed, concave clearance, and operating parameters of the diversion plate on the distribution of a soybean flexible threshing device. Fu et al [22] simulated the distribution of the rice threshed mixture in a drum-shaped bar-tooth longitudinal axial flow threshing device using EDEM software. The feasibility of the simulation was verified by a bench test.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester

Zhang

Chen

et al. 2022

Agriculture

View full text Add to dashboard Cite

The distribution of the threshed mixture is the link between the threshing and cleaning process during corn harvesting. Uneven distribution leads to a local accumulation of the mixture in the cleaning, resulting in high impurity and loss rate. Existing studies rarely concern the distribution of the corn threshed mixture. To address this problem, the distribution experiment was conducted in a self-made corn longitudinal axial threshing system to explore the distribution pattern, and both the particle size distribution and weight distribution of components (corn kernel, corn cob, and corn husk) were analyzed in this study. The results showed that the drum speed and concave clearance has a significant effect on particle size. Moreover, the impurities (corn cob, corn husk) increase with the drum speed. The weight distribution has an obvious uneven trend. In the axial weight distribution, corn kernels increased initially and decreased afterwards, while corn cobs and corn husks constantly increased. In the radial weight distribution, corn kernels and corn cobs were greater on both sides and less in the middle; corn husks had a clear left posterior accumulation. The increase in drum speed and feed rate and the decrease in concave clearance aggravated the inhomogeneity of the weight distribution. By analyzing the distribution characteristics, the drum speed of 400 r/min, concave clearance of 40 mm, and feed rate of 7 kg/s were confirmed to be optimal operating parameters. Under these conditions, the accumulation of the threshed mixture was weakened, which provided a satisfactory base for the subsequent cleaning. This study could provide a data support for the improvement of the threshing system. Additionally, this study is believed to have the potential to be used for the structural design of the cleaning system to reduce mixture accumulation and improve the cleaning performance.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester

Zhang

Chen

et al. 2022

Agriculture

View full text Add to dashboard Cite

show abstract

“…The smashing and scattering device was fit on the feeding ratoon rice harvester 21 , 22 , which is shown in Fig. 1 .…”

Section: Methodsmentioning

confidence: 99%

Design and test of smashing and scattering device of double-channel feeding ratoon rice harvester

Wang

et al. 2022

Sci Rep

Self Cite

View full text Add to dashboard Cite

Since it is requested that the smashed straw should not be scattered onto the stubble in the first season harvest, a smashing and scattering device matched with the first season harvester of ratoon rice was designed in this paper to smash and scatter the straw into the rolling area. The main structural parameters affecting the straw scattering performance were determined by theoretical analysis of the deflecting performance of the straw deflector. EDEM software was used to simulate and analyze the straw scattering situation under the action of the deflector. Taking the qualified rate of straw scattering as the performance index, the optimal parameter combination of the straw deflector was determined by L27 (313) orthogonal test, and the operating performance of the device was verified by bench test and field comparison test. The test results show that: The optimal parameter combination was 45° between the straw deflector and the vertical direction, 200 mm height difference between straw deflector and outlet, 0° inclination angle of inner deflector and 35° inclination angle of outer deflector. The qualified rate of straw scattering was 72.2% in the corresponding simulation test, 93.6% in the bench test and 95.2% in the field test, which could meet the demand of first season harvest of ratoon rice.

show abstract

“…With the increased demand for large-feeding grain harvesting equipment, longitudinal flow threshing has become the preferred threshing method for large-feeding grain harvesters due to its ability to reduce threshing intensity, prolong threshing time, and ensure the quality of the operation [1,2], but due to the influence of its layout and structure, its discharged material in the direction of the width of the screen surface of the scavenger sieve has a serious unevenness, which seriously affects the operating effect of the scavenging system; coupled with the fact that the longitudinal flow In addition, the threshing end of the detritus, the distance from the light debris discharge outlet is very close, resulting in an increase in the cleaning loss [1], so the study of the technology to improve the large feed capacity cleaning screen screen load uniformity and improve the cleaning screen tail entrainment loss has become the key to improve the quality of operation of longitudinal axial flow grain harvester [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study and Experiment on Screen Surface Homogenization Technology of Dislodged Material Based on Longitudinal Flow Threshing

Ming,

He,

Yue

et al. 2024

Agriculture

View full text Add to dashboard Cite

Aiming at the problems of uneven distribution of dislodged material on the screen surface of longitudinal axial flow grain combine harvester, a large difference in material clearing time, and large clearing loss, a dislodged material homogenizing device that can realize dislodged material return and homogenization at the rear of longitudinal axial flow was developed. (1) The structure and motion parameters of the reflux plate were determined, and simulation tests were carried out to verify them; (2) A test bench was set up, and the Box-Behnken test method was adopted to determine the influence law of each factor on the operating effect and the optimal parameter combination, and the results showed that the tilt angle of the return plate, motor speed, and amplitude had a significant influence on the distribution uniformity of the material on the screen surface; it was determined that the optimal combination of the angle of the return plate configuration was 28.7°, the speed of the motor was 247 r/min, the amplitude of the return plate was 18.3 mm, and the seed contamination rate was 0.48%. The optimum combination was determined to be 28.7°, 247 r/min, 18.3 mm, and 0.48% impurity rate; (3) under the conditions of the field test validation, the validation error is less than 5%, proving that it can effectively improve the performance of the clearing and reduce the rate of impurity content.

show abstract

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

Cited by 10 publications

References 4 publications

Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester

Experimental Study on the Particle Size and Weight Distribution of the Threshed Mixture in Corn Combine Harvester

Design and test of smashing and scattering device of double-channel feeding ratoon rice harvester

Study and Experiment on Screen Surface Homogenization Technology of Dislodged Material Based on Longitudinal Flow Threshing

Contact Info

Product

Resources

About