| 摘要 |
A milk flow sensing and control device constructed and arranged for use in dairy equipment for sensing the flow of milk from an animal and controlling the actuation of fluid pressure/vacuum operated teat cup support and retraction apparatus and removing and retracting the teat cups from the animal in cessation or substantial reduction of milk flow from the animal; the sensor and control device having a hollow body defining a float chamber and containing a float member and attached actuating member, the float chamber having a main milk inlet and a main milk outlet in the upper part thereof and a minor bleed outlet at the base thereof. A secondary chamber below the body sealed from the float chamber has inlet and outlet ports for pressurized fluid or vacuum, and a valve member normally closing at least one of the ports and movable to the open position by the actuating member on the main milk flow to the float chamber ceasing and milk draining from the float chamber; opening of the valve member providing communication between the ports for the pressurized fluid or vacuum to effect operation of the teat cup support and retraction apparatus and removal of the teat cups.
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