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

Golisz, Ewa; Kupczyk, A.; Majkowska, M.; Trajer, Jędrzej

doi:10.3390/pr9081358

Cited by 6 publications

(6 citation statements)

References 42 publications

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“…In order to eliminate various violations in the management of machine milking and obtain high milk yields, it is necessary to investigate the interaction between the milk-air mixture and milking equipment [17].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing an interconnection between the technical and technological parameters of milking equipment based on the movement of a milk-air mixture in a milking machine

Aliiev

Paliy²,

Dudin

et al. 2022

EEJET

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Machine milking is one of the main technological processes in the dairy industry whose efficiency level largely affects cattle breeding in general. The key role, in this case, belongs to milking equipment. The design and use of technical means of milking are associated with certain difficulties related to the imperfection of milk discharge. Therefore, the current study is due to the need to investigate the process of moving the milk mixture in a milking machine. A physical-mathematical model of the process of moving the two-phase milk-air mixture along the milk-conducting line of a milking machine has been built. The mathematical model relates the value of the fluctuating of vacuummetric pressure ΔP, the rate of milk discharge QM, the pulse rate ζ, and the value of working vacuummetric pressure P. It was found that in the milk-conducting system with the upper milk pipeline there is a large fluctuation of vacuummetric pressure ΔP=1.02–4.69 kPa, which exceeds the regulated value (2.5 kPa). In a milk-conducting system with a lower milk pipeline, the vacuummetric pressure fluctuation is ΔP=0.59–1.84 kPa. The patterns of change in the value of working pressure P and the frequency of pulsations ζ in the milking machines of simultaneous and pair action depending on the rate of milk discharge from the udder have been determined. It is established that the maximum deviation of the value of fluctuation of vacuummetric pressure ΔP between the experimental and theoretical data within a predefined range of factors is 0.81 kPa. The correlation coefficient is 0.92, which indicates the adequacy of the constructed models. Owing to this, the task of the rational choice of milking equipment is resolved

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Establishing an interconnection between the technical and technological parameters of milking equipment based on the movement of a milk-air mixture in a milking machine

Aliiev

Paliy²,

Dudin

et al. 2022

EEJET

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show abstract

“…They change widely in the cases of various vio lations of the technical condition of the equipment [13,14]. Violations and drastic changes in the technical parameters of milking plants during the milking process significantly affect the speed of milk yield and increase the time of cattle milking, which is emphasized in work [15].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Taking into consideration equations ( 16) to ( 18), we have an expression for calculating the inner diameter of the teat sphincter: Substituting the values of equations (15) in equation ( 4), we finally receive an expression for a milk yield rate: Thus, the milk yield rate depends on the value of a working vacuum, the ratio of the cycles, the number of pulsations of the milking machine, and the tension force of teat rubber.…”

Section: Fig 2 Scheme Of Interaction Between the Teat Rubber And Teatmentioning

confidence: 99%

Establishing the influence of technical and technological parameters of milking equipment on the efficiency of machine milking

Aliiev

Paliy²,

Kis³

et al. 2022

EEJET

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One of the tasks that imply increasing the milk productivity of cows is to create optimal maintenance conditions that ensure the increased use of the genetic potential of cattle based on the implementation of engineering and technological solutions. A mathematical model has been built that links the technical and technological parameters of the vacuum system of milking equipment, namely, the value of the working vacuum P, the pulsation frequency n, the ratio of pulsation cycles, and the tension strength of milking rubber FH to cows’ milk yield rate V. The range of milking plant operating parameters for milking in the milk line has been determined, at which the milk yield rate is maximum: P=52 kPa, n=57.6–58.8 min–1, δ=0.59–0.64, FH=59.3–60.4 H. Under these parameters, the milk yield rate is V=1.48–1.53 l/min. The results of the multifactor experiment have helped construct an adequate mathematical model of the second order, which confirms the theoretical dependence of the influence of the technical and technological parameters of the vacuum system of milking equipment on milk yield rate and the air flow of the milking machine. Analysis of the mathematical model has made it possible to establish the rational structural and technological parameters for the vacuum system of a milking machine: the value of the working vacuum, P=50.6 kPa; pulsation frequency, n=55.9 min–1, the ratio of pulsation cycles and the tension force of milking rubber FH=64.8 H. Under these parameters, the milk yield rate is maximum: V=1.47–1.52 l/min; the air flow consumption of the milking machine is Q=2.19 m3/h. The mathematical model built fully reveals the influence of technical and technological parameters of milking equipment on the efficiency of machine milking. Owing to this, the issue related to the rational choice of equipment is resolved.

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“…The vacuum at the end of the sucking phase affects the teat tissue at the beginning and end of milking. Therefore, the availability of the mathematical model of vacuum change makes it possible to conduct simulation tests of the controllability of the machine milking process (Golisz E. et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

The Functional Controlability of Milk Ejection of the Adaptive Milking System

Dmytriv

2021

INMATEH

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The concept of functional controllability of the milk ejection is considered, which makes it possible to predict the intensity of milk ejection in the online mode of the milking machine. The architecture of the functional controllability by intensity of milk ejection is developed. Input and output parameters of the structural-functional scheme of adaptive control of milk ejection intensity are described. An analytical model of milk ejection intensity based on Pearson's distribution is developed. The milk ejection intensity for different productivity and duration of cows milking is modelled. The microprocessor unit is designed using a single-chip microcontroller. It ensures the algorithm set by the central computer and implements a step of changing the pulsation frequency of 0.1 Hz, the ratio between the cycles of 0.25%, the phase shift step of 0.1 s.

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

Cited by 6 publications

References 42 publications

Establishing an interconnection between the technical and technological parameters of milking equipment based on the movement of a milk-air mixture in a milking machine

Establishing an interconnection between the technical and technological parameters of milking equipment based on the movement of a milk-air mixture in a milking machine

Establishing the influence of technical and technological parameters of milking equipment on the efficiency of machine milking

The Functional Controlability of Milk Ejection of the Adaptive Milking System

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