Grundfos Management A/s

Markus Simon

Sergei Gerz

Valeri Kechler

Serge Gerz

A metering pump aggregate has a metering chamber (), adjoined by a positive-displacement body () that can be moved by a positive-displacement drive (), as well as a controller () for actuating the positive-displacement drive (). The controller () is designed to actuate the positive-displacement drive () in such a way, at least for specific setpoint conveyed flows to be generated by the metering pump, that a stroke of the positive-displacement body () begins with a first, elevated stroke rate (n), and is subsequently continued at a second, lower stroke rate (n). A method for controlling such a metering pump aggregate is also provided.

Dosing pump unit and method for controlling a dosing pump unit

A metering pump unit with a metering chamber (), a positive-displacement body that adjoins the latter and can be moved by a positive-displacement drive (), as well as a controller () for actuating the positive-displacement drive (). The controller () is designed to actuate the positive-displacement drive () at least in a specific operating state in such a way that a stroke, in particular a pressure stroke, of the positive-displacement body is started at a first, lower stroke rate, and the stroke rate is increased to a second, elevated stroke rate as the pressure stroke () continues. A method is provided for controlling the positive-displacement drive () of such a metering pump unit.

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Dobel, Germany

Markus Simon