Justification of rational design parameters of milking machine for installations with milk line system

Achkevych, Oksana; Achkevych, Vasyl; Bratishko, Viacheslav; Potapova, Svitlana

doi:10.22616/erdev.2020.19.tf329

Cited by 5 publications

(4 citation statements)

References 7 publications

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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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“…Among these studies, a special position is occupied by tests of vacuum changes in the milking equipment [21], which is the main technical parameter of a mechanical milking machine. Vacuum drops and oscillations in the milking cluster reduce milking efficiency and constitute the factors that are mostly responsible for udders diseases in mechanically milked cows.…”

Section: Introductionmentioning

confidence: 99%

Simulation Tests of a Cow Milking Machine—Analysis of Design Parameters

et al. 2021

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The objective of this paper was to create a mathematical model of vacuum drops in a form that enables the testing of the impact of design parameters of a milking cluster on the values of vacuum drops in the claw. Simulation tests of the milking cluster were conducted, with the use of a simplified model of vacuum drops in the form of a fourth-degree polynomial. Sensitivity analysis and a simulation of a model with a simplified structure of vacuum drops in the claw were carried out. As a result, the impact of the milking machine’s design parameters on the milking process could be analysed. The results showed that a change in the local loss and linear drag coefficient in the long milk duct will have a lower impact on vacuum drops if a smaller flux of inlet air, a higher head of the air/liquid mix, and a higher diameter of the long milk tube are used.

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“…In precision livestock farming, one of the key components of the technical support for the milk production process is the means of operational monitoring of milk production intensity, which are the basis for adaptive milking systems, means of monitoring the physiological condition of cows and individual milk production [1][2][3]. Volumetric operating principle mechanical meters (bucket and float type) are widely used to determine individual productivity of cows.…”

Section: Introductionmentioning

confidence: 99%

Milkmeter based on electric capacitive flow sensor

Tkach¹,

Achkevych

Bratishko

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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The research concerns the creation of effective monitoring of the intensity of milk production and accounting for individual milk yield. The article presents the results of theoretical and experimental studies of a capacitive flow sensor and a milk meter. A mathematical model is developed, and dependences are obtained, which reveal the relationship between the signal of the capacitive flow sensor, its design parameters and the parameters of the pulsating milk flow (volume and flow speed). Within the conditions of this mathematical model, the result of calculating the milk does not depend on the characteristics of the capacitive flow sensor and the electrical properties of milk. Based on the obtained dependences, a signal processing algorithm and appropriate software for determining individual milk yield and milk flow through the milk supply hose of the milking machine have been developed. A prototype of a milk meter based on a capacitive flow sensor is made. Production inspection of the meter at the facilities with a stable milk pipeline and laboratory studies of its operation as part of the installation for milking cows were carried out. The average measurement error when milking low-yielding livestock in production conditions was 5.7%. During laboratory tests, a systematic deviation of the meter model readings to the smaller side was recorded, which is due to the use of the lower milk line to simulate the milking parlour. Control measurements in production conditions were carried out on two tie stall farms. Each farm had 100 animals. The total number of control milking was 30 repetitions. There is also a systematic dependence of meter readings on the intensity of the milk production. These systematic deviations are corrected by the introduction of a correction factor, which, when changing the intensity of milk production from 1.6 × 10 -5 m 3• s -1 to 6.6 × 10 -5 m 3 •s -1 , changes from 1.2 to 1.7, respectively.

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Justification of rational design parameters of milking machine for installations with milk line system

Cited by 5 publications

References 7 publications

Research in milking machine of pairwise combined type

Research in milking machine of pairwise combined type

Simulation Tests of a Cow Milking Machine—Analysis of Design Parameters

Milkmeter based on electric capacitive flow sensor

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