MILKING UNIT Russian patent published in 2004 - IPC

FIELD: agriculture, in particular, milking equipment. SUBSTANCE: milking unit has two- chamber teat cups 1, milk claw 2 with chambers 18 and 35 separated from one another by flexible membrane 36, and branch pipes 7, 15, 17. Milk claw has control chamber 18 and auxiliary chamber 19, the latter chamber being communicated via channel 20. Auxiliary chamber 19 is communicated via gauged channel 39 with milk discharge branch pipe 22. Milk receiving chamber 21 has rotor 23 equipped with blades 24 and positioned for movement in vertical plane. Slider bearing 25 is positioned in lower central part of rotor 23 and two-sided needle valve 26 is positioned in upper central part of rotor 23. Needle valve is made in the form of two cones 27 and 28. Apex end of lower cone 27 is oriented downward and apex of upper cone 28 is oriented upward. Lower cone 27 in opening 29 formed in bottom of auxiliary chamber 19 and upper cone 28 in opening 32 for communicating auxiliary chamber 19 with atmosphere define gauged slits 31 and 32. Slider bearing 25 has immovable part 41 rigidly attached to partition 42 with milk exit openings 43 and movable part 44 attached to rotor 23. Detachment surface of movable part 44 and immovable part 41 of slider bearing 25 is formed by two-thread helical surface defined by two inclined surfaces, with inclination angle exceeding friction angle of said surfaces, and by one vertical surface. Branch pipes 40 for communicating of teat cups 1 with milk receiving chamber 21 are tangentially connected to milk claw case. EFFECT: increased efficiency and enhanced reliability in operation. 3 cl, 3 dwg