Ecolab USA Inc.

Wolfgang Sauer

Rudolf Albrecht

Andreas Ruppert

Martin Schweble

Günter Zettlitzer

A diaphragm pump (), in particular for use as a detergent dosage pump, comprises a pump housing () with at least a first check valve () and a second check valve (), a fluid chamber (), a diaphragm () defining a wall of the fluid chamber () and reciprocatingly movable, a stepping motor () as driving means for reciprocating said diaphragm (), wherein the stepping motor () comprises a controller () for actuating the stepping motor (), and an external control unit () for operating the controller () of the stepping motor (), wherein the external control unit () is connected to the controller () by a power supply line () for transmitting an operating signal () to the controller (), wherein the operating signal () is a start signal for operating the diaphragm pump (), in particular the stepping motor (), at preset parameters. The diaphragm pump () according to the invention offers increased cost efficiency of the diaphragm pump () by integrating the power supply and the transfer of operating signals from the control unit () to the controller ().

Diaphragm pump for dosing a fluid and an according method

A diaphragm pump, in particular for use as a detergent dosage pump, comprises a pump head, a fluid chamber adjacent to the pump head, a diaphragm defining a wall of the fluid chamber and reciprocatingly movable, at least a suction check valve and a dosing check valve, a control unit, and a detector unit for detecting a fluid inside the fluid chamber. The diaphragm pump according to the invention offers increased process reliability.

Diaphragm pump for dosing a fluid capable of automatic degassing and an according method

A diaphragm pump (), in particular for use as a detergent dosage pump, comprises a pump housing () with at least a first check valve () and a second check valve (), a fluid chamber (), a diaphragm () defining a wall of the fluid chamber () and reciprocatingly movable, driving means () with a driving shaft () for reciprocating said diaphragm (), a control unit (), wherein the driving means () is connected to the diaphragm () by an eccentric () and a con rod (), wherein the driving means () is configured as a gearless drive to directly reciprocate the diaphragm (). The diaphragm pump () according to the invention offers increased cost efficiency and further it is possible to increase the dosing capabilities of the diaphragm pump ().

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Bischofswiesen, Germany

Wolfgang Sauer