VACUUM-CONTROL DEVICE IN TEAT CUP CHAMBER Russian patent published in 1995 - IPC

FIELD: agriculture. SUBSTANCE: device for control of vacuum in teat cup chambers comprises casing 1 with variable and constant- vacuum chambers 3, a control chamber separated from the constant-vacuum chamber by spring-loaded membrane 5. Control chamber 4 communicates through branch pipe 12 with air-vacuum distributor 8 which has an electric valve connected to the atmosphere by vacuum line 11 and the variable-vacuum chamber. Under the effect of difference between atmospheric pressure in control chamber 4 and operating vacuum in constant-vacuum chamber 3, valve 7 opens a hole thus starting the milking process. If the milk-yielding capacity decreases, control chamber 4 is connected to vacuum line 11, pressure in chambers 4 and 3 is equalized and milking process ceases. EFFECT: improved design. 1 dwg