| CPC F04B 43/025 (2013.01) | 18 Claims |
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1. An assembly for a diaphragm pump, comprising:
a body defining a plurality of diaphragm chambers spaced apart about a body axis, wherein each diaphragm chamber defines a membrane opening and is in communication with both an inlet chamber and an outlet chamber; and
a plurality of flexible membranes that each comprise an outer edge, wherein the body is configured to clamp the outer edge of each membrane along a corresponding membrane opening to seal a corresponding one of the diaphragm chambers;
wherein the membranes are configured to deflect substantially in parallel to the body axis to suction fluid into each diaphragm chamber from the inlet chamber and discharge fluid from each diaphragm chamber into the outlet chamber;
wherein each membrane comprises:
a coupling section coupled to a pump drive at a mounting angle, and
a deflection section arranged radially outwardly from the coupling section and configured to deflect in response to movement of the pump drive; and
wherein movement of the coupling section radial to and about the body axis is restricted to suppress movement of the deflection section radial to and about the body axis by alignment of an origin of the mounting angle along the body axis with a neutral position of the membranes that corresponds with an outer edge of the membranes.
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