Zirconium powder coating device for ferrite blank

The utility model discloses a ferrite blank coating zirconium powder device which comprises a main body support, a zirconium powder box arranged above the main body support, a coating head arranged below the zirconium powder box, a rotating device arranged on one side of the coating head and a water spraying assembly arranged on the other side of the coating head. The zirconium powder box is composed of a powder box body and a powder leakage valve. The powder leakage valve comprises a fixed valve port, a cone arranged at the bottom of the fixed valve port, a movable valve port formed outside the fixed valve port and a conical leakage hole formed in the bottom of the movable valve port. The fixed valve port and the movable valve port are fixed through threads, when the movable valve port is screwed to ascend and descend, the conical leakage hole can be far away from or close to the cone, and when the conical leakage hole is close to the cone, a gap for powder leakage becomes smaller, and the powder leakage amo