DEVICE TO FEED POWDER INTO PLASMA FLOW Russian patent published in 2012 - IPC H01J37/00 

FIELD: machine building.

SUBSTANCE: proposed device comprises two coaxial electrodes of spark discharger arranged in encased spraying chamber. Piston with flange is aligned with said discharger. Revolving axle from current conducting material is arranged along piston axis of symmetry, spark discharger central electrode is arranged on bottom end of said axle. Shear is made on outer cylindrical surface on said electrode. It comprises also blade from dielectric material with two cutting edges arranged in plane perpendicular to rotational axis and inclined to the plate of rotation. Spark discharger second annular electrode made up of sidewalls of cup with sample and arranged on rod to vertically displace inside the case. Note here that said cup has double walls: outer wall from dielectric material and inner wall from metal with vertical slit.

EFFECT: controlled feed rate.

2 cl, 1 dwg