REDUCED PRESSURIZATION SHIFT WITHIN DIAPHRAGM PUMP CAVITY

A positive displacement pump includes a housing surrounding a drive chamber and a diaphragm compartment. A drive element is inside the drive chamber. A diaphragm is inside the diaphragm compartment and divides the diaphragm compartment into a fluid chamber and a cavity. A shaft connects the drive el...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Willoughby, Jason J, Behrens, David M
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A positive displacement pump includes a housing surrounding a drive chamber and a diaphragm compartment. A drive element is inside the drive chamber. A diaphragm is inside the diaphragm compartment and divides the diaphragm compartment into a fluid chamber and a cavity. A shaft connects the drive element and the diaphragm. A breather valve is fluidically connected to the cavity and is configured to allow air to exit the cavity. The cavity is fluidically disconnected from the drive chamber.