  We study resonant all-electric adiabatic spin pumping through a quantum dot
with two nearby levels by using a Fermi liquid approach in the strongly
interacting regime, combined with a projective numerical renormalization group
(NRG) theory. Due to spin-orbit coupling, a strong spin pumping resonance
emerges at every charging transition, which allows for the transfer of a spin
$~ \hbar/2$ through the device in a single pumping cycle. Depending on the
precise geometry of the device, controlled pure spin pumping is also possible.
