Milking machine system, and pressure regulator incorporated ther

Details Milking machine system, and pressure regulator incorporated ther Milking machine system, and pressure regulator incorporated ther

1980-03-27

1982-06-22

Cline, William R.

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

119 1444, 137526, 251331, F16K 3112

Patent

active

043357431

ABSTRACT:
A vacuum pump is connected through a vacuum line to the milking apparatus, and a pressure regulator is employed to admit into the line the amount of ambient air necessary to maintain line pressure constant within narrow limits. The pressure regulator comprises a rolling-sleeve air valve to control the admission of ambient air, and which is itself controlled by a bias spring and an opposed diaphragm. One side of the diaphragm is subjected to pressure generally equal to line pressure, whereas the other side is subjected to the pressure of air within a dome. Means are provided to admit into the dome sufficient air to maintain dome pressure constant. Means are also provided to bleed air through the diaphragm, thus maintaining substantially constant the pressure drop thereacross. The air valve is constructed with a deflecting skirt which prevents false sensing of line pressure.

REFERENCES:
patent: 3766933 (1973-10-01), Nicholson, Jr.
patent: 3811467 (1974-05-01), Jones

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