Design of a roll crusher for sunflower stems and substantiation of the rational modes of its operation

This paper reports a study of the technological process of grinding plant residues of sunflower and the causal relationships of factors that form the system of quality indicators. The necessary prerequisites for determining rational modes and parameters of the roll crusher have been devised. A prototype of the roll crusher was designed and fabricated, in which the cutting knives are arranged along the entire width of the grip in a staggered manner, with the possibility to change the angle of inclination to the axis of drum rotation in the range of 5...20°. It was established that in the case of the right-side arrangement of the cutting edge of knives, the highest total level of the percentage of crushed stems in the range of 101‒150 mm with an additional load weighing 800 kg exceeded by 1.58 times the corresponding indicators of the roll with an additional load of 600 kg. The largest overall value of the percentage of crushed stems in the range of 0‒200 mm when additionally loading the roll with 800 kg was 1.13 times higher than the corresponding indicators of the roll with an additional load of 600 kg. In the range of 0‒200 mm, with an additional load on the roll of 600 kg, at the left-side arrangement of the cutting edge of the knives of the roll, higher total percentage of crushed stems was observed compared to the right-side arrangement. At a speed of 7.45 km/h, 13.6 km/h, the cumulative value of the percentage of crushed stems exceeded the corresponding indicators at the right-side arrangement of knives by 1.09 times, at the speed of 18.6 km/h – by 1.04 times, at the speed of 22 km/h – by 1.04 times, respectively. It has been noted that at the left-side arrangement of the cutting edge of the knives of the roll, the percentage of crushed stems in the range of 51‒100 mm, with an additional load of 600 kg, exceeded the corresponding indicators with an additional load of 800 kg. At the speed of 10.08 km/h, it was exceeded by 1.9 times; at the speed of 13.6 km/h – by 1.44 times; at the speed of 18.6 km/h – by 1.96 times; at the speed of 22 km/h – by 1.99 times, respectively

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Development of a structural and functional diagram of an aggregate for grinding and incorporating coarse stem plant residues into the soil

Mehanization and electrification of agricultural ◽

10.37204/0131-2189-2020-12-4 ◽

2020 ◽

pp. 36-43

Author(s):

V. A. Volsky ◽

R. V. Kotsyubansky

Keyword(s):

Quality Indicators ◽

Technological Process ◽

Operating Conditions ◽

Functional Diagram ◽

Design Parameters ◽

Plant Residues ◽

Plant Debris ◽

Operating Modes ◽

Plant Environment ◽

Working Bodies

Annotation Purpose. Increasing the efficiency of crushing operations and embedding coarse-stem plant residues into the soil due to the improvement of the technological process using a combined unit containing a crusher roller, disc working bodies and a compactor roller. Methods. The research was carried out using synthesis analysis, correlation-regression analysis, which makes prediction of the output quality and energy indicators for certain operating conditions and certain parameters of the combined machine for processing corn stubble. The rational values of design parameters and operating modes were determined based on the results of solving the problem of optimizing energy costs and quality indicators within one module with established internal factor relationships and relationships that arise when working bodies interact with the plant environment and soil. Results. A structural and functional diagram of a combined unit has been developed, in which a shredder roller in combination with a disc harrow and a compactor roller improves the quality of processing operations with simultaneous crushing and harvesting plant residues into the soil. The trailed combined unit contains a towing device, a frame, support wheels for moving in the transport position, a section of crusher rollers, a section of cut spherical disc working bodies, a section of solid spherical disc working bodies, mechanisms for adjusting the angles of attack of sections of spherical discs, sections of compaction rollers. Conclusions 1. The technological process of crushing (up to 5 cm) of plant residues of coarse-stem crops, their earning, mixing with the soil and spreading over layers to a depth of 25 cm, rolling the treated soil and leveling the field surface has been improved, reduces the development of corn moth. 2. A structural-functional diagram has been developed and a combined unit has been manufactured, the main difference of which is the use of a mounted module-roller-grinder, which intensifies the grinding process and earns coarse-stem plant residues into the soil, increases the quality indicators of the technological operation by the amount of crushed plant residues less than 5 cm to 70–80%. Keywords: corn, plant debris, grinding, making plant debris, tillage, combined unit.

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FUNDAMENTALS OF THE LUMP CRUSHING THEORY. WORKING PROCESSES OF CRUSHING AND SCREENING EQUIPMENT. LECTURE 8

Spravochnik Inzhenernyi zhurnal ◽

10.14489/hb.2021.10.pp.025-032 ◽

2021 ◽

pp. 25-32

Author(s):

A. I. Nizhegorodov

Keyword(s):

Technological Process ◽

Rock Properties ◽

Road Vehicles ◽

Roll Crusher ◽

Screening Equipment ◽

Hydraulic Classification ◽

Working Processes

The article presents materials of Lecture 8 in Theory of carrying and lifting, construction and road vehicles and equipment, which describes the following issues: the rock properties, the rock crushing degree, the basics of the lump crushing theory and types of crushing machines. The technological process of crushing with a roll crusher is described; the values of forces acting in roll crushers are calculated.Along with the process of crushing, the article deals with the processes of segregation and concentration, the basic of the screening (fractionation) theory and features of the hydraulic classification of nonmetallic materials.

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To risk or not to risk

Strategic Direction ◽

10.1108/sd-05-2016-0075 ◽

2016 ◽

Vol 32 (8) ◽

pp. 12-14

Keyword(s):

Case Studies ◽

Design Methodology ◽

Reading Time ◽

Cutting Edge ◽

Stressful Event ◽

Content Type ◽

Private Lives ◽

Pertinent Information ◽

The Right ◽

Practical Implications

Purpose This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings It is said that the most stressful event in our lives is moving house. The risk of the whole project falling through; the sheer scale of planning and coordination required; the emotional highs and lows of the success or failure in finding the right home to move to. Certainly, there are few activities that adults go through that guarantee such a levels of anxiety. And if this is the case for our private lives, then what is the equivalent of our business lives? Implications The paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

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Design and Implementation of an MIS for Specification Comparison

International Journal of Information Technology Project Management ◽

10.4018/ijitpm.2014040106 ◽

2014 ◽

Vol 5 (2) ◽

pp. 78-103 ◽

Cited By ~ 1

Author(s):

Chantana Chantrapornchai ◽

Wised Jongjam

Keyword(s):

Selection Criteria ◽

Public Organization ◽

It Projects ◽

Standard Specification ◽

Weight Percentage ◽

Design And Implementation ◽

Total Percentage ◽

The Right ◽

Product Specification

Finding a satisfactory vendor or outsourcer for IT projects is a tedious task in typical public organizations. When there are many alternatives, it may be difficult to choose the right one. Thus, many selection criteria need to be used. In this paper, we present an MIS system that provides supported information for selecting the vendors. First, a standard specification is given to the system. Also, the scoring criteria is defined for each feature in the specification. Then, the vendors propose their product specification to the system. The system gives the summary reports comparing each vendor product and how much the criteria is met. Hence, the user can decide which vendor to choose. We present a case study of three scoring approaches, namely Percentage of Weight, Percentage of Price and Total Percentage, in one of a public organization.

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Correction

Laboratory Automation News ◽

10.1177/221106829700200209 ◽

1997 ◽

Vol 2 (2) ◽

pp. 41-41

Keyword(s):

Cutting Edge ◽

Previous Issue ◽

Family Tradition ◽

The Right

[Figure: see text] The photo page 13 of the previous issue of LAN Magazine (Vol. 2, No. 1), listed as Margarita Palutke, Ph.D., was actually Dr. Sue Steven of SmithKlineBeecham. LAN apologizes for this error to all parties. Dr. Sue Steven of SmithKline Beecham, Pharmaceuticals Division, works with some of the latest, cutting edge technology in robotics. Where, you might ask, do Roboteers derive their inspiration? In the case of Dr. Steven it is, quite literally, a family tradition. Her father, also Dr. Steven, is shown at the right photographed with a GE robot.

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Extremism and Intelligence

The Journal of Intelligence Conflict and Warfare ◽

10.21810/jicw.v2i3.1186 ◽

2020 ◽

Vol 2 (3) ◽

pp. 15

Author(s):

Julian Richards

Keyword(s):

Social Media ◽

Social Movements ◽

Liberal Democracy ◽

Cutting Edge ◽

Crossing Over ◽

Allocation Of Resources ◽

Transnational Social Movements ◽

Intelligence Agencies ◽

Difficult Challenge ◽

The Right

Contemporary extremist threats encompass a widening spectrum, whereby long-standing threats are supplemented by the stubborn persistence of historical threats, and by the emergence of new threats and Violent Transnational Social Movements (VTSMs). For security and intelligence agencies, the management challenges posed by the evolving picture are complex and multi-faceted. Probably the most difficult challenge is that of prioritisation and the allocation of resources across the spectrum of investigation. Other challenges include those of recruiting and retaining staff with the right cutting-edge skills, especially in such fields of social media exploitation; and a fundamental definitional question of how to define some of the newly-emerging threats, avoiding questions of surveillance crossing-over into inappropriate suppression of legitimate dissent in a liberal democracy.

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IMPROVEMENT OF TECHNOLOGICAL PROCESS OF DRILLING THIN SHEET STEELS

ENGINEERING, ENERGY, TRANSPORT AIC ◽

10.37128/2520-6168-2020-4-5 ◽

2020 ◽

pp. 48-54

Author(s):

Anatoliy Ostrovsky

Keyword(s):

Sheet Metal ◽

Technological Process ◽

Agricultural Sector ◽

Sheet Material ◽

Thin Sheet ◽

Small Diameter ◽

Main Tool ◽

Drilling Process ◽

Different Diameters ◽

The Right

This article considers the technological process of drilling holes in sheet metal. The existing typical technological process, with detailed analysis, provides grounds for substantiating the idea of an innovative solution. There is a connection between the improvement of economic indicators of this technological operation with the change of geometric parameters of the tool. The comparison of existing technological processes, operations, and transitions of production of round openings with the use of spiral drills is given. The traditional technique involves a clear sequence of the technological process with the use of tools for marking, kerning, and sequential use of screw drills of different diameters. Therefore, after the previous operation of marking the center of the two holes, perform the operation of kerning. The core (recess in the metal) prevents the deviation of the small diameter screw drill from the marking lines. After the above steps, the traditional technological process involves drilling a small diameter hole in order to direct the main tool in the right direction. To make the main hole perform special sharpening of the working part of the twist drill so that the diameter of the Central part of the tool is equal to the diameter of the first guide hole to avoid further displacement of the main hole and the next operation is to drill the hole to the desired diameter. As a result, the article raises the topic, given the widespread use of sheet metal, including in the agricultural sector, the feasibility of using an innovative idea to improve the technological process associated with the processing of sheet material, namely thin metal sheets. It is worth noting that for example, we consider a material that is characterized by its versatility, namely steel Ст 3. Despite the numerous sources devoted to the study of improving the drilling process, there are a number of issues, including the extension of this direction surfaces with a covering and without it, various thicknesses within the thin-walled hire. The most significant result of the improved technological process of drilling will be used in the system of efficient maintenance of agricultural machinery.

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VALIDATION OF THE TECHNOLOGICAL PROCESS OF PRODUCTION OF THE DRUG "GLUCONIL®, COATED TABLETS, 1000 MG"

Farmaciâ Kazahstana ◽

10.53511/pharmkaz.2021.18.56.020 ◽

2021 ◽

pp. 77-83

Author(s):

А.Ю. БРАТАШОВА ◽

З.Б. САКИПОВА ◽

А.У. ТУЛЕГЕНОВА

Keyword(s):

Production Process ◽

Medicinal Product ◽

Quality Indicators ◽

Technological Process ◽

Dosage Form ◽

Optimal Parameters ◽

Critical Stage ◽

Safety And Efficacy ◽

Rational Scheme

Проведена валидация технологического процесса препарата «Глюконил®, таблетки, покрытые оболочкой, 1000 мг». Для каждой критической стадии процесса определены оптимальные параметры технологического процесса, установлен перечень контролируемых показателей качества, влияющих на безопасность и эффективность лекарственного препарата, и критерии их приемлемости, разработана рациональная схема отбора образцов, обеспечивающая их репрезентативность. Результаты, полученные при производстве трех промышленных валидационных серий, доказывают постоянство и надежность процесса производства лекарственного препарата от серии к серии и для каждой единицы дозированной лекарственной формы. The technological process of the preparation «Gluconil®, coated tablets, 1000 mg» was validated. For each critical stage of the process, the optimal parameters of the technological process are determined, a list of controlled quality indicators affecting the safety and efficacy of the medicinal product, and the criteria for their acceptability are established, a rational scheme for sampling is developed, ensuring their representativeness. The results obtained in the production of three industrial validation batches prove the consistency and reliability of the production process of the medicinal product from batch to batch and for each unit of the dosage form.

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