Abstract: The invention concerns a dosing pump for moving a fluid, comprising a dosing head in which there is a dosing chamber and a displacement element reciprocatable between a first and a second position, wherein the displacement element delimits the dosing chamber, and the volume of the dosing chamber in the first position of the displacement element is greater than the volume of the dosing chamber in the second position of the displacement element, wherein the displacement element is coupled to a linear motor by way of a stroke element in such a way that in operation of the linear motor the stroke element performs a forward stroke and a return stroke in a housing in a direction of a movement axis with a stroke length h and the displacement element is reciprocated between the first position and the second position.

Abstract: A diaphragm unit for a diaphragm pump includes a diaphragm core and a multi-layer pump diaphragm connected to the diaphragm core. The pump diaphragm has a fluid-impermeable working layer which comes into contact with a fluid to be delivered, and a fluid-impermeable safety layer. A sealed volume for receiving fluid passing through the working layer is arranged between the working layer and the safety layer. A first clamping region of the diaphragm forms a ring which annularly surrounds the diaphragm core. To detect a rupture of the working diaphragm layer, at least one element of a sensor is provided within the ring formed by the first clamping region for detecting fluid which penetrates into the sealed volume.

Abstract: The invention concerns a dosing pump for moving a fluid, comprising a dosing head in which there is a dosing chamber and a displacement element reciprocatable between a first and a second position, wherein the displacement element delimits the dosing chamber, and the volume of the dosing chamber in the first position of the displacement element is greater than the volume of the dosing chamber in the second position of the displacement element, wherein the displacement element is coupled to a linear motor by way of a stroke element in such a way that in operation of the linear motor the stroke element performs a forward stroke and a return stroke in a housing in a direction of a movement axis with a stroke length h and the displacement element is reciprocated between the first position and the second position.

Abstract: The present invention concerns a diaphragm unit (1) for a diaphragm pump comprising a diaphragm core (2) having a receiving means (3) for a thrust rod (4, 4?, 4?) of a pump drive, and a multi-layer pump diaphragm (5) connected to the diaphragm core (2), wherein the pump diaphragm (5) has a fluid-impermeable working diaphragm layer (6) which in operation of the diaphragm pump comes into contact with a fluid to be delivered by the diaphragm pump, and a fluid-impermeable safety diaphragm layer (7), a sealed volume (12) for receiving a fluid passing through the working diaphragm layer, that is arranged between the working diaphragm layer (6) and the safety diaphragm layer (7), and a first clamping region (9) with which the pump diaphragm (5) can be received in a receiving means of the diaphragm pump, wherein the first clamping region (9) forms a ring which annularly surrounds the diaphragm core (2).

Abstract: The present invention concerns a method of controlling and/or regulating a metering pump comprising a drive motor having a shaft driven by the motor and a displacement member arranged in a metering head, in which the rotary movement of the shaft is converted into an oscillating movement of the displacement member, wherein the displacement member, interacting with an outlet and inlet valve in alternate sequence, leads to a pump stroke (pressure stroke) and an intake stroke and thus to delivery of a medium to be metered.

Abstract: A magnetic drive metering pump in which a movable thrust member is fixed to a diaphragm and is axially movable in a magnet shroud. The thrust member, on electrically actuating the magnet shroud, is drawn into the magnet shroud against the force of a recuperating spring, and after deactivating the magnet shroud, is returned to a starting position. The diaphragm cooperates alternately with an outlet and an inlet valve to produce a pump stroke in a pump metering head. The magnetic drive metering pump has a reference element associated with the thrust member and diaphragm, the position of which reference element is detected by a positional sensor. The positional sensor provides a signal which has a fixed relationship to the position of the reference element, and the motion of the thrust member is controlled by a control circuit such that it follows a predetermined nominal profile.

Abstract: A magnetic drive metering pump in which a movable thrust member fixed to a connecting rod is axially movable in a longitudinal axis in a magnet shroud anchored in a pump housing so that the thrust member with the connecting rod, on electrically driving (actuating) the magnetizing coil, is drawn into the magnet shroud against the force of a recuperating spring, reducing an air gap between the thrust member and an inner face of magnetic shroud, into a bore in the magnet shroud and after deactivating the magnet the thrust member is returned to the starting position by the recuperating spring so that the thrust member and an elastic displacement member actuated thereby on carries out an oscillating motion continued activation and deactivation of the magnetizing coil, which diaphragm cooperates alternately with an outlet and an inlet valve to produce a pump stroke (pressure stroke) and a priming stroke in a metering head arranged in the longitudinal axis.

Abstract: A metering pump with a rotary drive motor and an oscillating piston, wherein the rotary motion of a drive motor is transformed into an oscillatory motion of a connecting rod by means of a gear arrangement, so that a displacement means activated thereby executes an oscillating linear motion on continuous rotation of the drive motor, that results in transfer of a medium to be metered in a metering head (12) arranged in the longitudinal axis of the connecting rod (19) cooperating alternately with an outlet and inlet valve to produce a pump stroke (pressure stroke) and a priming stroke.