Research on the Block-Portion Separator Parameters Influence on the Adjustment Range of Operating Elements Speed

Ivanov, M. I.; Rutkevych, Volodymyr; Kolisnyk, Oleh; Lisovoy, I.O.

doi:10.35633/inmateh_57_04

Cited by 19 publications

(15 citation statements)

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“…Важливим показником якості робочих рідин є їх чистота, проте цей показник може істотно погіршуватися в процесі експлуатації сільсько-господарської техніки, що відбивається на ефективності її використання [3]. Забруднення робочої рідини призводить до інтенсивного зносу деталей гідромашин (гідронасосів, гідромоторів, гідроциліндрів), а також розподільних та регулюючих елементів, до забивання фільтрів, засміченню або зависанню клапанів [4,5]. Встановлені в гідравлічних системах сільськогосподарської техніки фільтри не повною мірою забезпечують необхідну чистоту робочих рідин.…”

Section: вступunclassified

Comprehensive Filtration System for Closed Hydrosystems of Agricultural Equipment

Gunko¹,

Stadnik²,

Shargorodskiy³

et al. 2021

Engineering, Energy, Transport Aic

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The article the issue of increasing the durability and reliability of units of closed hydraulic systems of agricultural equipment by ensuring the purity of the working fluid is considered. The analysis of existing systems of filtration of working liquid for the closed hydraulic systems of the agricultural equipment is resulted. It is noted that the basis of the created and implemented filtration systems are filtration installations in pressure mains, including with automatic washing, which provide filtration fineness up to 50 μm, filter elements which have high strength, reliability and are capable of countercurrent washing at working pressure of hydraulic system. The complex system of filtration of working liquid for the closed hydraulic systems of the agricultural equipment is offered. The filtration system of the working fluid provides for the use of filters with backwash and filtration elements with a slit-like brass wire of round cross section. The total length of the filtration gap of one filtration element with a width of 0.05 mm is 40 m The filter provides passive cleaning technology - countercurrent flushing, as the simplest in design, easy to manufacture and sufficiently efficient and cheap. Feature of the filtration installation is a possibility of washing of its filtration elements by a countercurrent of working liquid. The signal for flushing is the occurrence of a pressure drop on the filter, which can be used to judge the degree of contamination and the readings of manometers installed at the inlet and outlet of a closed hydraulic system of agricultural equipment. It is noted that the developed complex filtration system for closed hydraulic systems of agricultural equipment will increase the reliability of control hydraulics at least twice and reduce costly downtime of agricultural machinery due to failure of sealed elements of hydraulic equipment.

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Section: вступunclassified

Comprehensive Filtration System for Closed Hydrosystems of Agricultural Equipment

Gunko¹,

Stadnik²,

Shargorodskiy³

et al. 2021

Engineering, Energy, Transport Aic

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“…Перш за все це пов'язано з відсутністю автономного приводу, який б компенсував істотний вплив газодинамічної сили на швидкість руху золотника при прямому і зворотному ході, особливостями течії робочого середовища при перекритті витратної магістралі і гістерезисом пружно-демфуючих елементів, які обумовлюють зміну величини тиску зворотної посадки затвора на сідло. Зазначені труднощі зростають при значних швидкостях зіткнення поверхонь ущільнювачів, роботі з тертям і знакозмінними зусиллями, корозії, термоциклічних і вібраційних навантажень, включаючи зовнішні впливові фактори [3,4].…”

Section: постановка проблемиunclassified

Ensuring Continuous Hysteresis of Sproad Action Valve Safety Valves

Stadnik

Shargorodskiy

Rutkevych

2020

Engineering, Energy, Transport Aic

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In the article principles of construction and design of spring valve units are considered, which allow to obtain a given dynamic quality to ensure constant hysteresis of spool safety valves of direct action. The analysis of efficiency of devices of correction of dynamic quality of spring valve units for ensuring their working capacity at variation of external operating factors by purposeful management of kinematic and force parameters of elastic-damping elements, and also the reasons influencing hysteresis It is noted that one of the reasons for the increase in hysteresis is damage to the rubber seals of the spool safety valves of direct action. Identifying the main causes of damage to rubber seals: constant friction of the edge of the radial holes of the spool on the seal ring; reverse the direction of the operating pressure; the pressure drop created by the axial hole of the spool when the valve is fully open. A spool spring valve with a mechanical spring having high throughput and low hysteresis is proposed. This characteristic was achieved through the use of high quality materials, which allowed to have a high throughput with minimal dimensions; optimization of geometrical characteristics of the flowing part of the valve; reducing the seal tension and, as a consequence, reducing the hysteresis. It is noted that the absence of contact of the radial holes of the spool with the rubber seal in the extreme off position protects the seal from plastic deformation during reverse flow. The prospect of further research in obtaining experimental dependences of the influence of spool speed, rubber stiffness, geometrical characteristics of the contact gap and pressure on the change of the valve hysteresis is revealed.

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“…The success of selection depends on the choice of selection criteria. Yield components do not only directly affect the yield but also indirectly by affecting other yield components in negative or positive ways (Bidgoli et al, 2006;Ivanov et al, 2019). Crop yield is one of the complex characters controlled by several interacting genotypic and environmental factors.…”

Section: Introductionmentioning

confidence: 99%

Study of correlations between yield inheritance and resistance of corn self-pollinating lines and hybrids to pathogens

Kolisnyk¹,

Онопрієнко²,

Onopriienko³

et al. 2020

Ukr J Ecol

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The results of the gradation grouping of corn hybrids showed that among the self-pollinating lines of the working collection 28.0% had a high crop, 50.0% had an average yield and 22.0% had a low yield. At the same time 10.5% of simple hybrids belonged to the group with high crop, 54.6% – to that with an average one and 34.9% – to low yielders. The fact that these 10.5% of hybrid combinations with the yields higher than 5.5 t ha-1 contain hybrid combinations with complex resistance to diseases and pests, which were created on the basis of our self-pollinating donor lines resistant to entomo– and phytopathogens, confirms the principles we formulated as to selecting parental pairs. The most uniform distribution was recorded as to damaging by the European corn borer, a high resistance to which is characteristic of 42.0% of self-pollinating lines and 29.1% of simple hybrids.

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Research on the Block-Portion Separator Parameters Influence on the Adjustment Range of Operating Elements Speed

Cited by 19 publications

References 0 publications

Comprehensive Filtration System for Closed Hydrosystems of Agricultural Equipment

Comprehensive Filtration System for Closed Hydrosystems of Agricultural Equipment

Ensuring Continuous Hysteresis of Sproad Action Valve Safety Valves

Study of correlations between yield inheritance and resistance of corn self-pollinating lines and hybrids to pathogens

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