UDC 33.63.631.531.12

 

Kurilo V.

Pryshliak V.

 

The article  describes advanced technological processes of non-seedling method of growing sugar beet seeds. Agrophysical properties of plants were taken as the basis of scientific research.
Studies conducted in previous years have shown that sowing it into the furrows is an effective measure of increasing field germination. In this way, sowing the seeds is stored in moist soil, which provides higher seedling density and better conditions for plants wintering. The analysis of scientific sources and experimental studies make it possible to conclude that sowing seeds in furrows in a non-seeded way of growing beet seed in the southern regions of Ukraine is promising and in certain circumstances takes precedence over other ways.
On the basis of studying the peculiarities of cultivation of seedless beet seed plants in irrigated conditions of the south of Ukraine, a method of furrowing of seeds and a method of cultivation of soil for furrowing of seeds have been developed. According to the results of researches, to optimize the fractional composition in the upper layer of the bottom of the furrow, in the upper layer of the lateral planes of the furrows and between the furrows, the shape of its shape was determined .
At the optimum value for germination of seed density of soil in the upper layer of the bottom of the furrow (zone of seed wrapping) 1.1… 1.2 g/cm³ the density of the top layer of soil lateral planes of the furrow should be within 1.25… 1.37 g/cm³, and between the furrows – within 1.10 … 1.37 g/cm³.
Agrotechnical measures developed in the course of the research ensure increase of sugar beet seed yield, increase of its reproduction coefficient and decrease of production costs. Advanced and thoroughly researched technological processes of non-seedling method of production of sugar beet seeds are offered for practical application as they give a positive economic result. Research findings can be used to further improvement and optimization of zonal technologies and facilities for growing sugar beet seeds.

Keywords: seedless method, sugar beet, technological process, seed production.

References:

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UDC 637.115:664.3.033:519.673

 

V. Prуshliak

I. Babyn

I. Hunko

 

During the operation of milk pipelines of milking equipment, milk residues of various properties, composition and thickness are formed on the internal surfaces of the pipeline. Their presence leads to an increase in bacterial contamination of milk. If all the necessary conditions for keeping livestock buildings are met, the main share of the mechanical and bacterial contamination of milk is formed due to insufficiently washed milking machine equipment. Therefore, to improve the quality of flushing, we propose to use an injector, which performs the function of periodically supplying air to the volume of the milk line, while creating significant fluctuations in the vacuum pressure and, as a consequence, controlled water hammer which should be controlled using automated systems of milking equipment. The aim of the study is to carry out a numerical simulation of the operating modes of the system for flushing milk pipelines of milking equipment with an air injector and determine their rational values . As a result of numerical simulation of the process of washing the milk line of the milking machine using the injector in the software package STAR-CCM +, the dependences of the rate of change of pressure and the change of the thickness of the layer of milk on the wall of the milk line at different values of its diameter from the working vacuum pressure, the duration of the injection stroke and the injection stroke the duration of the air injector pause. Solving the compromise problem, which reduces to minimizing the thickness of the milk layer on the wall of the milk pipeline and the rate of change of pressure for various values of the diameter of the milk pipeline, the corresponding rational parameters of the injector operating modes are obtained.

Keywords: milking unit, washing system, washing solution, multiphase medium, numerical simulation.

References: