ASPECTS REGARDING THE OPERATING PRESSURE INSIDE THE MILKING TEATCUP LINER

C-tin Chirilă, R. Roşca

Abstract
    The paper presents some preliminary results regarding the pressure variations inside the teatcup liner, during the milking process. The analysis was performed on the upper part of the liner, which has contact with the teat during milking.
    A proprietary test rig was used for the experiments; the system was equipped with a proprietary electro-magnetic pulsator, which can provide two milking ratios (1:1 and 3:1, respectively).
    Milk flow through the teatcup was simulated using water stored in an open tank of the test rig; water was chosen because its density is close to milk density.
    The tests results are presented within tables, for the two milking ratios used during the experiments.
    The tests showed that only small pressure variations were recorded in the liner-teat contact area. The small differences among the average values suggest that pressure inside the liner may be considered to be constant during milking.

Key words: milking equipment; teat cup