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Title: | Simulation of design parameters of a milking cup with an extended service life |
Other Titles: | Моделювання конструктивних параметрів доїльного стакана з подовженим терміном служби |
Authors: | Čėsna, Jonas Medvedskyi, Oleksandr Postol, Yulia Постол, Юлія Олександрівна Kukharets, Valentina Zayets, Maksym Hrudovij, Roman Pantsyr, Yuriy Zarajczyk, Janusz Daniel, Zbigniew |
Keywords: | milking;teatcup;cow;milk |
Issue Date: | Nov-2022 |
Citation: | Simulation of design parameters of a milking cup with an extended service life / Jonas Čėsna, Oleksandr Medvedskyi, Yulia Postol.. Agricultural Engineering. 2022, Vol. 26, No.1, pp. 243 -252. |
Abstract: | EN: Modern milking machines need some additional studies to meet the requirements as to milking equipment. An imperfect design of a teatcup results in an incomplete milking of cows. The availability of devices for milk flow stimulation promotes an increase in a cow milk yielding capacity. But here arises a problem of an un-controlled axial motion of a teatcup on a teat. As a result, a full milkflow is re duced, particularly at the final stages of milking. There is an effect of an increase in an inner diameter of a liner barrel, which causes that teatcups fall down. A scientific problem of the mitigation of some negative developments with the view to improve the efficiency of a teatcup arises. In a teatcup shell a liner is in a detended position during milking and resting periods. Thus, it under constant stretching. It results in a loss of elasticity irrespective of the material, as well as in reduction ofthe period of service maintenance. The use of a device for support ing a liner which is in a stretched state only during the milkflow, will result in an increase of a teatcup efficiency. The suggested automatic pneumatic mechanism releases a liner from the load during the resting period. The dependence of a ten sion force of a liner from the surface area of an annular membrane has been es tablished. It has been proven that the membrane surface of 0.00065 m2 provides tension for a mechanism performance irrespective of operating vacuum pressure. The regression equation which connects geometrical parameters of an operating system with the efforts directed at the opening of a leading membrane has been received. A suitability of operation of using a pneumatic tightening device has been substantiated. An insignificant axial motion of a liner during a cycle of milking creates a stimulating effect. As a result, a completeness of miliking increases by 3-8% |
URI: | http://elar.tsatu.edu.ua/handle/123456789/16663 |
ISSN: | ISSN 2083 -1587 ; e-ISSN 2449 -5999 |
DOI: | 10.2478/agriceng-2022-0019 |
Appears in Collections: | кафедра Електротехнології і теплові процеси |
Files in This Item:
File | Description | Size | Format | |
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10.2478_agriceng-2022-0019-1.pdf | 1.15 MB | Adobe PDF | View/Open |
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