High volume dual diaphragm pump with vacuum relief
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United States of America Patent
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Sep 1, 2015
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app pub date -
Sep 4, 2014
filing date -
Sep 4, 2014
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Abstract
A double diaphragm pump for moving large volumes of water that may be laden with debris includes a pair of fourteen-inch diameter elastomeric diaphragms, driven by reciprocating push rods pivotally coupled to opposed eccentrics. An engine drives a gearbox having two outputs. One eccentric is attached to each output. A pair of weighted flap valves control flow to and from each diaphragm chamber. A vacuum pressure gauge monitors inlet pressure. A relief valve relieves vacuum pressure in the event of a blockage or other flow impediment.
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