The invention concerns a triboelectric sprayer for spraying electrostatic powder
paint, comprising a powder intake, an air intake, a conduit transporting air and
powder while providing the electrical charge of the powder and, in front of the
charging conduit, means for emitting at least an air-powder mixture jet. The air
intake is located in the axis of the charging conduit, while the powder intake
is arranged laterally and converges in an acute angle with the air intake, in a
point located upstream of the charging conduit. The air intake includes of an injector
made of electrically conductive material which also constitutes an earthing member
of the wall of the charging conduit.