scholarly journals Dynamics and Quality of Trieur Separation of Millet Seeds from Barley

2021 ◽  
pp. 71-75
Author(s):  
Н.П. Тишанинов ◽  
А.В. Анашкин ◽  
К.Н. Тишанинов ◽  
Х.Д.Д. Альшинайиин
Keyword(s):  
High Speed ◽  
Physical And Mechanical Properties ◽  
Measurement Time ◽  
Time Interval ◽  
Front Wall ◽  
Residual Content ◽  
Working Length ◽  
Mode Of Operation ◽  
Speed Mode

Представлены результаты исследований физико-механических свойств компонентов зерносмеси, динамики и качества выделения примеси из неё в зависимости от скоростного режима работы триера (n) и угла подъёма верхней кромки передней стенки выводного лотка (γn). Подтверждён лавинообразный характер выделения проса из ячменя в первых интервалах времени измерений за счёт эффекта динамической сегрегации примеси в циркулирующих слоях зерносмеси. Положительный вектор сегрегации проса (вниз – к ячеистой поверхности) объясняется значительной его насыпной плотностью, гладкой поверхностью – угол естественного откоса составляет 20,3° (в 1,8 раза меньше, чем у ячменя), компактными размерами зерновок и их округлой формой. Установлена высокая степень влияния на интенсивность выделения примеси скоростного режима – при приросте n на 12,5% (от 40 до 45 об/мин) выделенная масса примеси в первом интервале времени измерений (tи = 5 с) увеличилась на 125%. При γn= 35° степень выделения примеси (и остаточная засорённость) обеспечиваются на высоком уровне стандартной длиной ячеистого цилиндра (l = 2,2 м) во всём диапазоне скоростного режима работы стенда n = 40…55 об/мин. С ростом γn до 45º сужается диапазон скоростного режима работы по качественным показателям до n = 45…55 об/мин, а при γn= 55º качество работы обеспечивается только при n = 50…55 об/мин. При γn= 45…50º и n = 50…55 об/мин 100%-ное выделение примеси обеспечивается за 30…35 с смещения сегмента зерносмеси по длине ячеистого цилиндра. При этом его рабочая длина используется лишь на 55…64%. Технологические потери на всех исследуемых режимах работы не превышают 0,3% и носят случайный характер, что объясняется неопределённостью условий выброса зерновок ячменя ячеями. The research results of physical and mechanical properties of grain mixture components, dynamics and quality of impurity extraction from it are presented depending on the speed mode of operation of the trieur (n) and the lifting angle of the upper edge of the front wall of the lead tray (γn). Avalanche-like character of millet separation from barley in the first intervals of measurement time is confirmed due to effect of dynamic segregation of impurity in circulating layers of grain mixture. The positive vector of millet segregation (down to the cellular surface) is explained by its significant poured density, a smooth surface – the angle of friction is 20.3° (1.8 times less than that of barley), compact bruchid sizes and their rounded shape. A high degree of influence on the rate mode impurity release intensity was established – at an increase of n by 12.5% (from 40 to 45 rpm), the extracted impurity mass in the first measurement time interval (tи = 5 s) increased by 125%. At γn = 35°, the degree of impurity release (and residual content of impurities) is provided at a high level by the standard length of the cellular cylinder (l = 2.2 m) in the entire range of the speed mode of the bench n = 40...55 rpm. With an increase in γn to 45º the range of the high-speed mode of operation is narrowed to n = 45...55 rpm, and at γn = 55º the quality of operation is ensured only at n = 50...55 rpm. At γn = 45...50° and n = 50...55 rpm 100% impurity release is ensured by 30...35 second with displacement of the grain mixture segment along the length of the cellular cylinder. At the same time, its working length is used only on 55...64%. Technological losses in all investigated modes of operation do not exceed 0.3% and are random in nature, which is explained by the uncertainty of the conditions for the release of barley bruchids by cells.

scholarly journals Dynamics and Quality of Trieur Separation of Vetch Seeds from Barley

2021 ◽  
pp. 76-81
Author(s):  
Н.П. Тишанинов ◽  
А.В. Анашкин ◽  
К.Н. Тишанинов ◽  
Х.Д.Д. Альшинайиин
Keyword(s):  
Physical And Mechanical Properties ◽  
Internal Surface ◽  
Process Quality ◽  
Time Interval ◽  
Front Wall ◽  
Time Intervals ◽  
Residual Content ◽  
Standard Value ◽  
The Stability ◽  
Speed Mode

Дана оценка физико-механических свойств семян вики. Предложены методические решения для проверки эффекта динамического «выедания» частиц, габариты которых выходят за внутреннюю поверхность ячеистого цилиндра, от воздействия контактирующего слоя сегмента зерносмеси. Установлена лавинообразная закономерность выделения семян вики из ячменя в первых интервалах времени замеров. С ростом скоростного режима работы стенда в диапазоне n = 40–55 об/мин при величине угла подъёма верхней кромки передней стенки выводного лотка γn = 35º интенсивность выделения примесной массы в первом интервале времени измерений (mi(1)) увеличивается в 6,3 раза. При минимальном значении n величина mi выравнивается в последующих интервалах времени протекания процесса, так как устойчивость габаритных семян вики в ячеях с ø = 4,5 мм невысокая, что снижает условия их эффективного выброса в выводной лоток. При этом стандартная длина ячеистого цилиндра не обеспечивает степень выделения примеси на достаточном уровне − СВст = 72%. Остаточная засорённость ячменя на минимальном скоростном режиме работы составляет ЗОст = 0,56–1,79% в зависимости от γn, что не удовлетворяет требованиям к качеству процесса. Установлено, что примесь из семян вики не относится к легковыделяемым. В частности при γn = 45º, только при n = nmax = 55 об/мин обеспечиваются приемлемые показатели качества процесса − СВст = 99,4%; ЗОст = 0,012%. При γn = γnmax = 55° стандартная величина ячеистого цилиндра (l = 2,2 м) не обеспечивает степень выделения примеси ˃ 75%. Технологические потери с ростом n и снижением γn возрастают, носят случайный характер, но не превышают 0,308%. Assessment of physical and mechanical properties of vetch seeds is given. Methodic solutions are proposed for checking effect of dynamic "eating away" of particles, dimensions of which extend beyond internal surface of cellular cylinder, from action of contacting layer of grain mixture segment. Avalanche-like pattern of extraction of vetch seeds from barley in the first time intervals of measurements is established. With increasing speed mode of the bench operation in the range of n= 40–55 rpm at the value of the lifting angle of the upper edge of the front wall of the lead tray γn = 35°, the intensity of extraction of impurity mass in the first measurement time interval (mi(1)) increases by 6.3 times. With a minimum value of n, the mi value is equalized in subsequent time intervals of the process, since the stability of the overall vetch seeds in the cells with ø = 4.5 mm is low, which reduces the conditions for their effective ejection into the lead tray. At the same time, the standard length of the cellular cylinder does not provide a degree of impurity release at a sufficient level – 72%. Barley residual content of impurities at the minimum speed mode of operation is 0.56–1.79% depending on γn, which does not meet the requirements for process quality. It has been found that a mixture from vetch seeds does not belong to easily released ones. In particular, at γn = 45°, only at n= nmax = 55 rpm, acceptable process quality indicators are provided – Cwst = 99.4%; RCoi = 0.012%. At γn = γn max = 55°, the standard value of the cellular cylinder (l= 2.2 m) does not provide the degree of impurity release > 75%. Technological losses with an increase of nand a decrease of γn increase, are random, but do not exceed 0.308%.

scholarly journals Study of the Quality of Barley Cleaning with Indented Cylinder from Grain Impurities

2021 ◽  
Vol 16 (3) ◽  
pp. 321-325
Author(s):  
Nikolay Petrovich Tishaninov ◽  
Alexander Vitalyevich Anashkin ◽  
Haider Jameel Alshinayyin ◽  
Konstantin Nikolayevich Tishaninov
Keyword(s):  
Operating Conditions ◽  
Front Wall ◽  
Impurity Component ◽  
Process Dynamics ◽  
Mode Of Operation ◽  
Proportional Increase ◽  
Barley Grains ◽  
Speed Mode ◽  
Initial Contamination

Results of the study on the separation of crushed barley grains from the grain mixture along the length of the cell surface of indented cylinder, depending on the initial impurity concentration (Zi), the speed mode of the indented cylinder (n) and the lifting angle of the upper edge of the front wall of the output tray (γn) relative to the horizon, are presented. The theoretical steadily decreasing trend in the intensity of the impurity component separation has been experimentally confirmed. The fact that crushed barley grains are a difficult-to-separate impurity has been established. When n increases, the intensity of impurity separation increases dramatically. The γn angle increases the dependence of the process dynamics on the speed mode. At γn =55°, the increase of n from 40 to 50 rpm increases the intensity of impurity separation from the grain mixture by 6.44 times. A decrease in the value of γn and an increase in the speed mode of operation lead to an increase in process losses. An increase in the initial contamination of the grain mixture under other equal operating conditions of the indented cylinder leads to a proportional increase in its residual contamination.

A Novel Method of Detecting Measurement Uncertainty of Voltage Deviation

2013 ◽  
Vol 805-806 ◽  
pp. 688-692
Author(s):  
Xin Fang ◽  
Xue Liang Huang ◽  
Yan Zhu
Keyword(s):  
Measurement Uncertainty ◽  
Power Quality ◽  
National Standards ◽  
Measurement Time ◽  
Time Interval ◽  
Basic Measurement ◽  
Voltage Deviation ◽  
Novel Method ◽  
Simulation Results

Nowadays, there are various devices to detect the power quality of AC grid, where uncertainty of voltage deviation is an important parameter to investigate the power quality. National standards specify several sinusoidal waveforms to detect it, usually implemented into the detecting devices. But these waveforms are not enough and a novel method of detecting measurement uncertainty of voltage deviation is proposed in this paper. A series of detection waveforms are designed using this method. The simulation results verify that the method is available to measure uncertainty of voltage deviation more accurately. Moreover, it can be used to justify whether the basic measurement time interval of voltage deviation meets IEC standard requirements.

scholarly journals New models of road transport system

2019 ◽  
Vol 135 ◽  
pp. 02011 ◽  
Author(s):  
Bauyrzhan Yedilbayev ◽  
Zhanna Kozhamkulova ◽  
Shinar Abdikul ◽  
Nazym Tulebayeva
Keyword(s):  
High Speed ◽  
Road Ecology ◽  
Road Transport ◽  
Material Base ◽  
Operational Conditions ◽  
The Road ◽  
Standard Data ◽  
Stream Density ◽  
Speed Mode

Transport and operational conditions include: the road – a relief, width of the carriageway, type and a paving condition, factor of coupling and flatness of a covering, a condition of roadsides, existence and quality of elements of the engineering equipment; the transport – a sort of transported cargo, intensity, stream density, a high-speed mode of movement; the weather and climatic – visibility, a precipitation, temperature, pressure and humidity of air; culture of operation – level of the organization of works and management, qualification and discipline of drivers, material base, quality of operational materials. Considering novelty of the problem considered in this article, and impossibility of coverage of all circle of questions on CTRE, it is called as «Introduction in city transport-road ecology», and the main terms, definitions and necessary standard data are provided in appendices.

scholarly journals The Results of laboratory tests of the physical and mechanical properties of camelina sativa and the mode of operation of the newly designed seed metering

2020 ◽  
Vol 29 (1) ◽  
pp. 169-176
Author(s):  
Erdenedalai Jantsanpurev ◽  
Munkhbat Bazarjav ◽  
Mungun Jargalsaikhan ◽  
Lkhagvasuren Luvsan
Keyword(s):  
Mechanical Properties ◽  
Seed Weight ◽  
Physical And Mechanical Properties ◽  
Conveyor Belt ◽  
Camelina Sativa ◽  
Test Results ◽  
Volume Weight ◽  
Mode Of Operation ◽  
Laboratory Device

The physico-mechanical properties of the seeds of the small-seeded plant, camelina sativa, were determined. The groove disc-shaped seed metering designed to depend on the physical and mechanical properties of the seed. The seed volume weight 674.5 ± 6.8 g, the absolute seed weight was 1.24 ± 0.09 g. The newly invented groove disc-shaped seed metering was tested on the laboratory device where mounted SZP-3.6 with conveyor belt and while customized speed of the metering shaft and of the tooth height, with a total number of 15 measurements on each tooth. The test results were processed by STATISTICA. It suggested the highest quality of feed index by modified toothed seed disk to be m= 3.75gr at disk tooth height of h=2mm, and disk speed at n=13r/min. Камелина сативагийн үрийн физик-механик шинж чанар болон зохион бүтээсэн үрлэх аппаратын ажиллах горимыг лабораторийн туршилтаар тодорхойлсон дүн Жижиг үрт тосны ургамал камелина сативагийн (Сamelina sativa) үрийн физик-механикийн шинж чанарыг тодорхойлон ховил бүхий диск хэлбэрийн катушкан үрлэх аппаратыг үрийн физик механик шинж чанараас нь хамааруулна зохион бүтээж туршив. Лабораторийн туршилтаар үр унасан эгнээний уртын дагуух үрийн жигд бус тархалт,  дискний ховилын өндөр, катушкийн эргэлтийн давтамжаар катушкаар гарах үрийн хэмжээг тогтооход эзлэхүүн жин  674,5±6,8гр, 1000 ширхэг үрийн жин  1,24±0,09 гр байв. Шинээр зохион бүтээсэн ховил бүхий дискэн үрлэх аппаратыг лабораторийн төхөөрөмж болох туузан дамжуулгатай СЗП-3.6 үрлүүрийн хэсэгт угсарч катушкын эргэлтийн давтамж, дискний шүдний өндрийг  мм байхаар өөрчлөн хэмжилтийг шүд тус бүр дээр 5 давталттай 15 удаагийн хэмжилт авч явуулж үр дүнг STATISTICA програмаар боловсруулав. Оновчлолын үр дүнгээр катушкын шүдний өндөр 2 мм, эргэлтийн давтамж n=13 эрг/мин байхад катушкаар хамагдаж гарах үрийн хэмжээ m=3,75 гр байх  зохистой параметрүүд тогтоогдсон.  Түлхүүр үг:  үрийн физик-механикийн шинж, ховил бүхий дискэн үрлэх аппарат, үрийн хоолой, үр чиглүүлэгч

scholarly journals A NEW APPROACH FOR ACCURACY IMPROVEMENT OF PULSED LIDAR REMOTE SENSING DATA

2018 ◽  
Vol XLII-3 ◽  
pp. 2491-2494
Author(s):  
G. Zhou ◽  
W. Huang ◽  
X. Zhou ◽  
C. He ◽  
X. Li ◽  
...  
Keyword(s):  
Remote Sensing ◽  
High Speed ◽  
Remote Sensing Data ◽  
Control Unit ◽  
Time Interval ◽  
Sampled Data ◽  
Interval Measurement ◽  
Sensing Applications ◽  
Time Interval Measurement

In remote sensing applications, the accuracy of time interval measurement is one of the most important parameters that affect the quality of pulsed lidar data. The traditional time interval measurement technique has the disadvantages of low measurement accuracy, complicated circuit structure and large error. A high-precision time interval data cannot be obtained in these traditional methods. In order to obtain higher quality of remote sensing cloud images based on the time interval measurement, a higher accuracy time interval measurement method is proposed. The method is based on charging the capacitance and sampling the change of capacitor voltage at the same time. Firstly, the approximate model of the capacitance voltage curve in the time of flight of pulse is fitted based on the sampled data. Then, the whole charging time is obtained with the fitting function. In this method, only a high-speed A/D sampler and capacitor are required in a single receiving channel, and the collected data is processed directly in the main control unit. The experimental results show that the proposed method can get error less than 3 ps. Compared with other methods, the proposed method improves the time interval accuracy by at least 20 %.

scholarly journals CHANGE IN THE TENSILE STRENGTH OF PRESSED BIRCH WOOD DURING LOCAL CRUSHING

2021 ◽  
Author(s):  
Svetlana Snegireva ◽  
Anna Kurnikova
Keyword(s):  
High Speed ◽  
Raw Materials ◽  
Great Influence ◽  
Physical And Mechanical Properties ◽  
Rolling Stock ◽  
Birch Wood ◽  
Damping Properties ◽  
Strength Limit ◽  
Speed Performance

At present, due to the reduction of business wood stocks, the problem of using fast-growing soft hardwoods as industrial raw materials is of particular relevance. This wood has a number of disadvantages – low density, low strength indicators, which limit the scope of its application. It is possible to improve the quality of soft hardwood wood by pressing it (compacting). Compaction of wood has a great influence on the physical and mechanical properties of wood. The wide application of pressed wood is possible in the production of railway sleepers. Pressing wood significantly increases the performance properties of the sleeper beam. One of the advantages of wooden railway sleepers is their high damping properties. The presence of damping properties in wooden sleepers ensures high speed performance and a long service life of the rolling stock. In this connection, research that ensures the rational use of wood raw materials is relevant. The purpose of this study is to determine the nature of the change in the strength limit of pressed birch wood (Betula pendula) during local crumpling.

scholarly journals HUBUNGAN WAKTU PENYEMPROTAN PESTISIDA SEBELUM PANEN TERHADAP RESIDU PROFENOFOS DAN KARAKTERISTIK MUTU SAWI PAKCOY (Brassica rapa L)

2018 ◽  
Vol 6 (2) ◽  
pp. 158
Author(s):  
I Made Prahadi Widnata Putra ◽  
Bambang Admadi Harsojuwono ◽  
I.G.A Lani Triani
Keyword(s):  
Brassica Rapa ◽  
Quality Evaluation ◽  
Quality Characteristic ◽  
Time Interval ◽  
Residual Content ◽  
Insecticide Content ◽  
Residual Level ◽  
Relationship Of ◽  
The Relationship

This research aims to 1) to know the correlation of different pesticide spraying time before harvest to the residual level of profenofos on the mustard pakcoy, 2) knowing the tendency of the relationship of different pesticide spraying time before harvest to the decrease of residual insecticidal content of  profenofos and the quality characteristic of the mustard pakcoy. This research uses regression and correlation analysis, the factors used are the last spraying time 0 days, 2 days, 4 days, 6 days, 8 days, 10 days, before harvest. Each treatment was group in to 3 to obtain 18 experimental units. The parameters observed were the residual insecticide content of profenofos, pakcoy mustard characteristics and the relationship between the use of pesticide with the time interval of spraying on the residual content and the characteristics of the pakcoy. The results showed that the time of spraying before harvest was related to the residue of profenofos on the mustard pakcoy with treatment 0, 2, 4, 6, 8, 10  days before harvest 0.001860 mg / kg, 0.000615 mg / kg, 0.000511 mg / kg, 0.000394 mg / kg, 0.000279 mg / kg, and 0.000270 mg / kg. quality evaluation results with yellowish green to green color criteria, freshness of light and slightly damaged 1.6 to 3.75 (very damaged-undamaged). The result of correlation between the use of pesticide with the time of spraying on the residual insecticide content of profenofos and the characteristics of the quality of pakcoy mustard with the correlation coefficient value of 0.80 to the residual content, 0.96 to the color, 0.88 to freshness, and 0.97 to the damage value.                                                                                                 Keywords: Brassica rapa L, time of pesticide spraying, profenofos and residue

Statistical Management of Food Production Processes

2020 ◽  
pp. 30-35
Author(s):  
N.A. Jurk ◽  
Keyword(s):  
Production Process ◽  
Control Chart ◽  
Food Production ◽  
Time Interval ◽  
Bakery Products ◽  
Shewhart Control ◽  
Manufactured Products ◽  
Mnemonic Technique ◽  
The Stability

The article presents scientific research in the field of statistical controllability of the food production process using the example of bakery products for a certain time interval using statistical methods of quality management. During quality control of finished products, defects in bakery products were identified, while the initial data were recorded in the developed form of a checklist for registering defects. It has been established that the most common defect is packaging leakage. For the subsequent statistical assessment of the stability of the production process and further analysis of the causes of the identified defect, a Shewhart control chart (p-card by an alternative feature) was used, which allows you to control the quality of manufactured products by the number of defects detected. Analyzing the control chart, it was concluded that studied process is conditionally stable, and the emerging defects are random. At the last stage of the research, the Ishikawa causal diagram was used, developed using the 6M mnemonic technique, in order to identify the most significant causes that affect the occurrence of the considered defect in bakery products. A more detailed study will allow the enterprise to produce food products that meet the established requirements.

Sign in / Sign up

Export Citation Format

Share Document