Dynamics of Fractional Composition of Grain-and-Straw Mass Being Threshed in the Threshing Mechanism of a Combine Harvester

Жалнин, Э. В.; Chaplygin, Mikhail E.

doi:10.15507/2658-4123.032.202202.249-262

Cited by 4 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Feeding rate and thresher length significantly affect the grain density and volume in the threshing gap, which makes it very important to choose a reasonable feeding method 25 . Experimental design methods like the Taguchi method might be used to analyze the threshing machine's performance as it reduces the effects of uncontrolled factors and minimizes the test number 26,27 .…”

Section: Introductionmentioning

confidence: 99%

The Impact of Threshing Unit Structure and Parameters on Enhancing Rice Threshing Performance

Abdeen,

Wu,

Salem

et al. 2024

Preprint

View full text Add to dashboard Cite

Improving rice threshing unit performance and structure significantly optimizes the thresher's overall efficiency by raising production per unit time while lowering costs and power consumption. This study introduced a new threshing device for rice combine (drum-shaped). It evaluated the threshing device performance using two threshers' structures under different rotating speeds of 1100, 1300, and 1500 rpm and feeding rates of 0.8, 1.1, and 1.4 kg/s. The studied parameters were evaluated through statistical analysis regarding thresher throughput, efficiency, seed damage, and specific energy. The experimental parameters greatly affected the whole performance of the threshing unit as the throughput, seed damage, and threshing efficiency positively correlated with the thresher speed and feeding rate. Also, the specific energy is reduced while increasing the thresher rotating speed. The newly designed thresher increased the threshing throughput from 2304 to 2448 kg/h and maximized the efficiency from 98.6 to 99.07% at 1500 rpm rotation speed and 1.8 kg/s feeding rate. Moreover, it reduced the specific energy from 3.37 to 3.15 kW.h/ton for the experimental variables 1100 rpm speed and 1.4 kg/s feeding. The new thresher's lowest damage rate of 0.24% was recorded at a feeding rate of 0.8 kg/s and 1100 rotating speed. These results highlight the distinct effect of the new thresher structure and operating parameters on the rice threshing device's overall effectiveness for medium-sized combine harvesters.

show abstract

Section: Introductionmentioning

confidence: 99%

The Impact of Threshing Unit Structure and Parameters on Enhancing Rice Threshing Performance

Abdeen,

Wu,

Salem

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

Technical and Economic Efficiency of Using Multifunctional Containers in Primary Seed Production of Grain Crops

Chaplygin,

Stepanov

2024

Engineering Technologies and Systems

View full text Add to dashboard Cite

Introduction. A very common technology of pedigree seed production is associated with manual in-process transshipment of many sacks that over time results in damaged sacks and in worsening of grain storage conditions. In this regard, there is a need to design a multifunctional rigid container, which will provide cost-effective storage of seed grain through the airtightness and control of the indoor environment. Aim of the Study. The study is aimed at designing a multifunctional container for primary seed production of grain crops with justification according to the criteria of technical and economic efficiency in comparison with pallet spaces and sacks. Materials and Methods. The state standard for economic evaluation of agricultural machinery was applied to assess the impact of reducing in-process transshipment of many sacks and seed losses in primary seed production of grain crops. Wheat seeds were used as the seed-producing crop under study. As service equipment there were used Wintersteiger Delta plot combine with a cutterbar working width of 2 m, seed bagging system or grain hopper 1.5 m3, Belarus 622 tractor with 1PTS-2 semi-trailer, TOR CD1 10916 electric telpher, and convective grain drying units on the basis of SL-0.3x 2 tray dryer for grain. Results. The authors of the article have estimated the technical and economic efficiency of using sacks and multifunctional containers in technological operations of harvesting, transporting and drying grain. With the annual notional volume of work in 400.7 tons, the saving of total money costs for a plot seed combine-harvester averages 117.9 thousand rubles. The reduction in the cost of work performance is 32.8%, payback period is 2 years; the decrease in the need for service personnel and harvesters is not revealed. At the same time, the reduction in the need for energy sources is 32.3%. Discussion and Conclusion. It has been determined that during technological operations of harvesting, transporting and drying, the best seed production performance is when using the multifunctional container with the following indicators of specific cargo turnover, p: Ui = 800 t/km2; Lг = 0.15 km; b = 0.01 km; Lп‒т = 0.5 km, initial humidity of seeds is 21%. In the process of using this container, the production cost, need for service personnel, energy sources and machinery are reduced.

show abstract

Physico-Mechanical Properties of Pumpkin Seeds in the Context of Drying Processes

Pastukhov,

Dobritskiy,

Bakharev

et al. 2024

S-h. maš. tehnol.

View full text Add to dashboard Cite

The paper highlights the significance of the drying process in post-harvest cucurbit seed treatment technology. To improve the eﬀectiveness of drying high-moisture seeds, a plant construction design was introduced, incorporating the concept of providing varied heat distribution to a vigorously agitated seed layer. The paper validates the necessity of refining the dimensional, frictional, and aerodynamic properties of pumpkin seeds to determine the optimal operating modes for the proposed dryer. (Research purpose) To identify the physical and mechanical properties of pumpkin seeds by defining their dimensional, frictional and aerodynamic characteristics. (Materials and methods) The study employs one-factor experimental research methods with subsequent statistical data processing. An experimental study was conducted on the physical and mechanical properties of Volzhskaya Grey pumpkin seeds possessing a standard moisture content ranging between 9.3 and 9.7 percent. Well-known laboratory apparatuses, namely the «conical tank» and the «inclined plane», were used to determine the natural repose angle and to enhance the accuracy of friction coeﬃcients determination. For analyzing the aerodynamic properties of the seeds, the K-293 Petkus air separator was employed. (Results and discussion) Research methods were developed and experimental plants were described. It was established that with a probability confidence level of 0.95, the static friction coeﬃcients of pumpkin seeds on a solid steel sheet, a perforated steel sieve and on rubber are 0.473, 0.418, 0.481, respectively, and the dynamic friction coeﬃcients under the identical conditions are measured as 0.331, 0.293, 0.337. The average angle of natural repose is found to be 22 degrees, the midsection area is 97.94 square millimeters, the soaring velocity is 7.083 meters per second, the windage coeﬃcient stands at 0.196 and the aerodynamic drag coeﬃcient is 0.136. (Conclusions). The assumption that enhancing the drying eﬃciency of vegetable seeds can be achieved by implementing a diverse thermal energy supply to continuously moving mass inside the apparatus is confirmed, provided that the seeds do not stick together in layers resulting in blockage of the coolant flow. An improved design of the dryer configurations has been developed and, to validate its optimum design and technological specifications, an in-depth analysis of the seeds' dimensional, frictional, and aerodynamic attributes has been conducted.

show abstract

Dynamics of Fractional Composition of Grain-and-Straw Mass Being Threshed in the Threshing Mechanism of a Combine Harvester

Cited by 4 publications

References 16 publications

The Impact of Threshing Unit Structure and Parameters on Enhancing Rice Threshing Performance

The Impact of Threshing Unit Structure and Parameters on Enhancing Rice Threshing Performance

Technical and Economic Efficiency of Using Multifunctional Containers in Primary Seed Production of Grain Crops

Physico-Mechanical Properties of Pumpkin Seeds in the Context of Drying Processes

Contact Info

Product

Resources

About