Dynamics of the vacuummetric pressure of the dairy chamber of the collector of milking machine

Medvedskyi, Oleksandr; Achkevych, Oksana; Achkevych, Vasyl

doi:10.33249/2663-2144-2019-78-5-51-57

Cited by 2 publications

(2 citation statements)

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“…Existing milking machines [1][2][3] with simultaneous action of milking glasses are characterized by a high intensity of milk output and its uneven flow into the milk collection chamber of the cluster. Teat and udder irritation is generally uniform and synchronous throughout the milking period.…”

Section: Introductionmentioning

confidence: 99%

Research in milking machine of pairwise combined type

Zabolotko

Achkevych

Potapova

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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It is known that improving the process and means of milking can increase the productivity of cows by 25-30%. Perfection of the design, interaction of the parameters and mode of operation of the milking machine have a special impact on the health, productivity of cows and milk quality. Parameters and modes of operation must correspond to the physiological characteristics of the process of milk production. Modern milking machines with a pair of milking cups ensure a stable flow of milk from pairs of teats into the collector chamber, doubling the irritation, which also has a synchronous uniform irritation of teats and udder halves. Milking machines with single action have high stability of milk supply to the collector chamber. Such devices also have much lower intensity of milk production. Improving the milking machine by changing the parameters in the milk cup by changing the operation of the control element (pulsator) will ensure asynchronous operation of the milking cups and increase the number of stimulating teats and udders during milking. A milking machine with paired-combined action is proposed, in which phases alternate during a certain cycle: simultaneous sucking phase in both pairs of milking cups, sucking phase in one when compressed in another pair of cups (milk is excreted in these phases) and simultaneous compression phase in both pairs (in this phase there is udder massage). The rational difference in pulsation frequency in pairs of milking cups is in the range from 0.1 to 0.2 Hz. The proposed mode of the milking machine increases the amount of milk produced during machine milking by 13.9% and its total yield by 8.2%, as well as reduces the duration of machine milking by 1.9… 2.1 times.

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Section: Introductionmentioning

confidence: 99%

Research in milking machine of pairwise combined type

Zabolotko

Achkevych

Potapova

et al. 2023

22nd International Scientific Conference Engineering for Rural Development Proceedings

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“…Since these flows are unstable, and the vacuum pump operates under a stationary mode, vacuum regulators are used in most milking machines. They are differential valves that open if the difference between external and internal pressures exceeds the permissible limit [5,6]. Thus, energy is spent on the operation of the vacuum regulator inefficiently.…”

Section: Introductionmentioning

confidence: 99%

Justifying parameters for the automatic servo control system of a rotary plate vacuum pump in the milking machine

Aliiev

Paliy²,

Kis³

et al. 2022

EEJET

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The scientific task to improve energy efficiency and ensure the process of vacuum regime stabilization in the operation of milking machines has been solved. A mathematical model of the process of functioning of the servo control system of a rotary plate vacuum pump was built; the numerical modeling of its workflow was carried out. This paper reports the results of experimental studies on the influence of the regime parameters of the rotary plate vacuum pump on the efficiency of its operation, as well as the results of experimental research on the servo control system for the rotary plate vacuum pump. The operational process of the rotary plate vacuum pump HB-1200 for a milking machine was investigated. The influence of mode parameters (rotor speed n and vacuum pressure P) on the performance of the vacuum pump, Qa, vacuum pressure fluctuation, ΔP, and the power consumption of the vacuum pump drive, Np, has been determined. The servo control system of the rotary plate vacuum pump was experimentally investigated based on the developed algorithms of its operation. In a generally accepted algorithm, vacuum fluctuation increases with increasing an airflow rate: at ΔQa=45 l/min – ΔP=2.3 kPa; at ΔQa=90 l/min – ΔP=4.6 kPa; at ΔQa=135 l/min – ΔP=6.4 kPa. Unlike the generally accepted one, the developed algorithm enables a stable vacuum mode with the largest vacuum fluctuation being ΔP=2.4 kPa. For the first time, the functional dependence of the influence of the regime parameters of the rotary plate vacuum pump with its automatic servo control system on the stability of the vacuum regime of a milk-vacuum system in the milking machine was established. The results can be applied when improving milking machines in terms of ensuring the stabilization process of the vacuum regime.

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Dynamics of the vacuummetric pressure of the dairy chamber of the collector of milking machine

Cited by 2 publications

References 0 publications

Research in milking machine of pairwise combined type

Research in milking machine of pairwise combined type

Justifying parameters for the automatic servo control system of a rotary plate vacuum pump in the milking machine

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