Improved diaphragm pump, particularly suitable for gas-containing fluid.

摘要

A diaphragm pump for gas-containing fluids, in which the chamber (2) for the fluid to be pumped is of frusto-conical shape corresponding to the elastic diaphragm (3), the minor-diameter edge (11) of which is connected to a rigid central disc (12) provided at its periphery with a frusto-conical support surface (13) for the underlying diaphragm (3). A protection system is provided for the elastic diaphragm. <IMAGE>