ELECTROMAGNETIC PUMP

The invention relates to an electromagnetic pump comprising precisely one coil, wherein the one coil has a longitudinal axis, a ferromagnetic first core section at least partially arranged in the one coil, a ferromagnetic second core section at least partially arranged in the one coil, and a ferromagnetic armature, wherein a primary air gap is arranged between the armature and the first core section, wherein a radial secondary air gap is arranged between an insertion section of the armature and a receiving section of the second core section facing the longitudinal axis, wherein the ferromagnetic armature has a truncated cone-shaped contour narrowing in the stroke direction in a front section facing the first core section, wherein a magnetic force between the armature and the first core section is greater in a closing process of the first air gap; than a magnetic force between the armature and the second core section.