Abstract: A Metering pump includes a displacement element (4), a drive system with an electric drive motor (12) driving the displacement element (4) and a control device (22) controlling the electric drive motor (12). The control device (22) is configured in such a manner that it detects the current position of the displacement element (4), detects the torque (M) of the electric drive motor (12) at several positions of the displacement element (4) and monitors the torque (M) in relation to the position of the displacement element (4), and a method for controlling such metering pump.

Abstract: A Metering pump includes a displacement element (4), a drive system with an electric drive motor (12) driving the displacement element (4) and a control device (22) controlling the electric drive motor (12). The control device (22) is configured in such a manner that it detects the current position of the displacement element (4), detects the torque (M) of the electric drive motor (12) at several positions of the displacement element (4) and monitors the torque (M) in relation to the position of the displacement element (4), and a method for controlling such metering pump.

Abstract: A metering pump aggregate has a metering chamber (16), adjoined by a positive-displacement body (14) that can be moved by a positive-displacement drive (6), as well as a controller (26) for actuating the positive-displacement drive (6). The controller (26) is designed to actuate the positive-displacement drive (6) 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 (14) begins with a first, elevated stroke rate (n1), and is subsequently continued at a second, lower stroke rate (n2). A method for controlling such a metering pump aggregate is also provided.

Abstract: A toothed wheel (16) is provided with teeth, in which a cross section of a respective first section (24) of the tooth (23) has an outer contour that projects in at least one partial area of the outer contour relative to an outer contour of the adjoining second section (26) of the tooth (23), and is elastically designed and/or mounted, as well as a pump unit, in particular as a metering pump unit, with a drive having a toothed gearing with the toothed wheel.

Abstract: A metering pump assembly includes a metering space (6) and a displacement body (8) which is linearly movable via a conrod (10). A helical spring (20) designed as a compression spring (20) impinges the conrod (10) with a force in a movement direction. The helical spring (20) at at least one axial end (24) is designed such that in a relaxed condition an end (26) of a spring wire projects axially with respect to a connecting winding (28).

Abstract: A metering pump unit with a metering chamber (6), a positive-displacement body that adjoins the latter and can be moved by a positive-displacement drive (22), as well as a controller (30) for actuating the positive-displacement drive (22). The controller (30) is designed to actuate the positive-displacement drive (22) 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 (36) continues. A method is provided for controlling the positive-displacement drive (22) of such a metering pump unit.

Abstract: A metering pump aggregate has a metering chamber (16), adjoined by a positive-displacement body (14) that can be moved by a positive-displacement drive (6), as well as a controller (26) for actuating the positive-displacement drive (6). The controller (26) is designed to actuate the positive-displacement drive (6) 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 (14) begins with a first, elevated stroke rate (n1), and is subsequently continued at a second, lower stroke rate (n2). A method for controlling such a metering pump aggregate is also provided.

Abstract: A metering pump assembly includes a metering space (6) and a displacement body (8) which is linearly movable via a conrod (10). A helical spring (20) designed as a compression spring (20) impinges the conrod (10) with a force in a movement direction. The helical spring (20) at at least one axial end (24) is designed such that in a relaxed condition an end (26) of a spring wire projects axially with respect to a connecting winding (28).

Abstract: A metering pump unit with a metering chamber (6), a positive-displacement body that adjoins the latter and can be moved by a positive-displacement drive (22), as well as a controller (30) for actuating the positive-displacement drive (22). The controller (30) is designed to actuate the positive-displacement drive (22) 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 (36) continues. A method is provided for controlling the positive-displacement drive (22) of such a metering pump unit.

Abstract: A dosing pump includes a dosing chamber (14), a suction channel (32) communicating with the dosing chamber (14) and a pressure channel (20) communicating with the dosing chamber (14).

Abstract: A toothed wheel (16) is provided with teeth, in which a cross section of a respective first section (24) of the tooth (23) has an outer contour that projects in at least one partial area of the outer contour relative to an outer contour of the adjoining second section (26) of the tooth (23), and is elastically designed and/or mounted, as well as a pump unit, in particular as a metering pump unit, with a drive having a toothed gearing with the toothed wheel.

Abstract: The invention relates to a method and a device for monitoring a fluid flow delivered by means of a pump. In the method the pressure distribution of the fluid is continuously or quasi-continuously measured as actual values in partial areas of the pump stroke and compared with desired values. In the device at least one pressure sensor is provided for the continuous or quasi-continuous measurement of the pressure of a fluid at least in partial areas of the pump stroke and a comparator is provided for comparing the measured actual values of the pressure with desired values.

Abstract: The invention relates to a method and a device for monitoring a fluid flow delivered by means of a pump. In the method the pressure distribution of the fluid is continuously or quasi-continuously measured as actual values in partial areas of the pump stroke and compared with desired values. In the device at least one pressure sensor is provided for the continuous or quasi-continuous measurement of the pressure of a fluid at least in partial areas of the pump stroke and a comparator is provided for comparing the measured actual values of the pressure with desired values.