A milking machine having a teatcup a teatcup liner and a pulsation chamber and two pressurisation sources

摘要

A milking machine 1 comprises at least one teatcup 2 having a teatcup liner 4 and a pulsation chamber 5, a first pressure source 14 for generating a first pressure, a second pressure source 9 for generating a sub-atmospheric second pressure, which is lower than the first pressure, and conduits 12, 15, 13 for transmitting the first pressure and the second pressure, respectively to the pulsation chamber 5. A pulsator 11 is provided for alternately connecting the first pressure source 14 and the second pressure source 9 to the pulsation chamber 5. A valve 26 is provided for influencing the transmission of at least one of the first pressure and the second pressure to the pulsation chamber 5 so that the efficiency of the pressure transmission is relatively high when the momentary pressure in the pulsation chamber 5 is higher than an intermediate pressure and is relatively low when the momentary pressure in the pulsation chamber equals or is lower than the intermediate pressure.