Abrasion-resistant impeller device of medium-speed coal mill

The utility model discloses an abrasion-resistant impeller device of a medium-speed coal mill. The abrasion-resistant impeller device comprises an impeller body and an impeller fixing plate which is used for fixing the impeller body, wherein the impeller body comprises a fan-shaped inner ring plate, a fan-shaped outer ring plate and a plurality of flow-guiding steel plates arranged between the fan-shaped inner ring plate and the fan-shaped outer ring plate; two sides of each flow-guiding steel plate are respectively and correspondingly welded on the fan-shaped inner ring plate and the fan-shaped outer ring plate; an annular fan-shaped body for air throttling is arranged at the upper part of each flow-guiding steel plate; an adjustable hood is fixed on the fan-shaped outer ring plate through a bolt assembly; a kidney slot used for adjusting the adjustable hood is formed in the fan-shaped outer ring plate; an abrasion-resistant protecting plate is arranged on the impeller fixing plate and mounted on the outer r