Patent ID: 7128541

Claim:
Oscillating displacement pump for delivery of liquid or gaseous media, with a pressure side and a suction side, a delivery space which is delimited on one side by a pump head and on the other side by a delivery element which is drivingly connected to an eccentric drive, an inlet valve ( 52 ) with an inlet connection ( 14 ) and an outlet valve ( 53 ) with an outlet connection being connected to the delivery space ( 59 ), the pump (P) having at least one pulsation damper ( 45 ) at least on the pressure side ( 54 ), and also an excess pressure limiting device ( 27 ) between the pressure side ( 54 ) and the suction side ( 55 ), the pump being a diaphragm pump with the delivery element being formed by a diaphragm ( 6 ), wherein a connection block is provided as a portion of the pump head, and has integrated into it the at least one pulsation damper ( 45 ), the excess pressure limiting device ( 27 ); the pulsation damper ( 45 ) has at least one damping chamber ( 56 ), which is divided by a separating diaphragm ( 42 ) into a receiving space for damping elements ( 40 , 41 ) and a region conducting delivery medium; the damping elements ( 40 , 41 ) are made of a resiliently elastic material and are arranged within the at least one damping chamber; the at least one pressure-side pulsation damper ( 45 ) is connected via an outlet throttle member ( 51 ) to an outlet, which in turn is connected to a pressure-side conduit ( 57 ) connection which forms the outlet, and the excess pressure limiting device ( 27 ), connected downstream of the at least one pulsation damper ( 45 ) and between the pressure and suction sides ( 54 , 55 ) of the pump, has a pressure side that is connected to the pressure-side conduit connection ( 57 ).