Identifying changes in the milking rubber of milking machines during testing and under industrial conditions

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.212772

Keywords:

milking rubber, rubber characteristics, rubber parameters, development, shell deformation

Abstract

Milking rubber is the only part of the milking equipment that comes into direct contact with the cow’s teats. The task is to establish the high-quality technical and technological characteristics of the rubber liners for milking machines. It has been established that milking rubber after 600‒650 hours of operation acquires significant deflection in the range of 5.5±0.03–3.7±0.04 mm while a teat cup deformation varies within 1.3±0.02–3.5±0.05 mm. A positive correlation dependence of the milking rubber elasticity on the deformation of its teat cup (r=+0.948) has been found.

The method of passing the electric discharge was used to assess the readiness of milking rubber for use, whereby a variation coefficient of υ˂10 % was determined for the milking rubber DD 00.041A AO «Bratslav», which makes it possible to estimate the product quality.

It was found that the change in the mass and volume of milking rubber over 72 hours of its treatment with the liquid SZHR-3 at t=150 °C exceeds the indicators obtained in contact with the liquid Skydrol LD-4 by more than 2.5 times. A positive correlation dependence of the milking rubber mass on its volume (r=+0.965) has been established.

It was found that at a rubber tension in the range of 0 to 90 N the duration of the deformation loss experienced by the milking rubber shell was not long; it is 0.05‒0.06 s. With an increase in the service life of milking rubber to 4 months, there is a decrease in its tension, from 56‒60 N to 43‒45 N, which adversely affects the maximum speed of milk yield – it decreases by 1.5 times.

A positive correlation dependence of the milking rubber service life on the level of its bacterial insemination (r=+0.960) has been established

Author Biographies

Andriy Paliy, Kharkiv Petro Vasylenko National Technical University of Agriculture Alchevskih str., 44, Kharkiv, Ukraine, 61002

Doctor of Agricultural Sciences, Associate Professor

Department of Technical Systems and Animal Husbandry Technologies

Artem Naumenko, Kharkiv Petro Vasylenko National Technical University of Agriculture Alchevskih str., 44, Kharkiv, Ukraine, 61002

PhD, Associate Professor

Department of Construction and Civil Engineering

Anatoliy Paliy, National Scientific Center «Institute of Experimental and Clinical Veterinary Medicine» Pushkinska str., 83, Kharkiv, Ukraine, 61023

Doctor of Veterinary Sciences, Professor

Laboratory of Veterinary Sanitation and Parasitology

Svitlana Zolotaryova, Kharkiv national agrarian University named after V. V. Dokuchaev p/o “Dokuchaevske-2”, Kharkiv dist., Kharkiv reg., Ukraine, 62483

PhD, Associate Professor

Department of Technology for Production and Processing of Livestock Products

Andrey Zolotarev, Institute of Animal Science of the National Academy of Agrarian Sciences of Ukraine Tvarynnykiv str., 1-A, Kharkiv, Ukraine, 61026

Researcher

Department of Nutrition, Physiology of Nutrition of Farm Animals and Feed Production

Ludmyla Tarasenko, Odessa State Agrarian University Kanatna str., 99, Odessa, Ukraine, 65039

Doctor of Veterinary Sciences, Associate Professor

Department of Veterinary Hygiene, Sanitary and Expertise

Oleksandr Nechyporenko, Sumy National Agrarian University Herasym Kondratiev str., 160, Sumy, Ukraine, 40021

PhD, Associate Professor

Department of Therapy, Pharmacology, Clinical Diagnostics and Chemistry

Larysa Ulko, Sumy National Agrarian University Herasym Kondratiev str., 160, Sumy, Ukraine, 40021

Doctor of Veterinary Sciences, Professor

Department of Therapy, Pharmacology, Clinical Diagnostics and Chemistry

Oleksandr Kalashnyk, Sumy National Agrarian University Herasym Kondratiev str., 160, Sumy, Ukraine, 40021

PhD, Associate Professor

Department of Anatomy, Normal and Pathological Physiology

Yurii Musiienko, Sumy National Agrarian University Herasym Kondratiev str., 160, Sumy, Ukraine, 40021

PhD, Associate Professor

Department of Obstetrics and Surgery

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Published

2020-10-31

How to Cite

Paliy, A., Naumenko, A., Paliy, A., Zolotaryova, S., Zolotarev, A., Tarasenko, L., Nechyporenko, O., Ulko, L., Kalashnyk, O., & Musiienko, Y. (2020). Identifying changes in the milking rubber of milking machines during testing and under industrial conditions. Eastern-European Journal of Enterprise Technologies, 5(1 (107), 127–137. https://doi.org/10.15587/1729-4061.2020.212772

Issue

Vol. 5 No. 1 (107) (2020): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2020 Andriy Paliy, Artem Naumenko, Anatoliy Paliy, Svitlana Zolotaryova, Andrey Zolotarev, Ludmyla Tarasenko, Oleksandr Nechyporenko, Larysa Ulko, Oleksandr Kalashnyk, Yurii Musiienko

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