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Development of a vacuum control system and vacuum adaption system for the teat-end vacuum in modern milking systems

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  Paper number  141895359,  2014 Montreal, Quebec Canada July 13 – July 16, 2014. (doi: 10.13031/aim.20141895359) @2014
Authors:   Ulrich - Ströbel, Sandra - Rose-Meierhöfer, Hülya - Öz, Luhdo - Toni, Reiner - Brunsch
Keywords:   vacuum control valve, vacuum control unit, teat-end, milk flow

Abstract. A problem of the currently available milking technology is that the teat-end milking vacuum always falls as the milk flow increases. A recently developed unit for the quarter individual control of the teat-end vacuum therefore constitutes the focus of this paper, which compares the vacuum behaviour at the teat end of the cow in the Multilactor® milking system with and without a control unit. As a result, the following differences with and without a control unit were observed: In low-flow milking stages, the milking vacuum is set to 8 kPa (release) and 17.5 kPa (suction) with a control unit in both pulse-cycle phases. By contrast, the milking vacuum reaches values of 29 kPa (release) and 33.5 kPa (suction) without a control unit. In high-flow milking phases, the milking vacuum remains relatively high at approximately 31 kPa, in both settings, with and without using the control unit. That allows a speedy and udder-tissue-friendly milking process.

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