| 摘要 |
1. Powder feeder interacting with a plasmatron for plasmatic spraying, comprising a vibrating powder bin becoming a conical feeding chamber towards the bottom, under which is located a gas-tight body with a rotational disc mounted on bearings within it, and immediately above the rotational disc is located a powder scraper, characterised in that the bottom section of the powder bin (1) contains a conical partition (7) having a surface with a spiral contour, whose edges running along generators of the cone create a longitudinal gap (13), while the powder scraper (5) has a bottom longitudinal recess (15), which on the side of powder inflow is open, while on the opposite side and laterally the recess (15) is limited by a rim (16) with contour similar to a letter U, whereas the circular part of the rim (16) is located symmetrically around the outlet opening (14) of the scraper, and also on both sides of the circular part of the rim (16) are located, symmetrically, two vertical scraping fins (17), while the bottom edges of the rim and fins are located immediately above the flat surface of the rotational disc (2).<IMAGE>
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