Permanent magnet deironing spiral conveyor

The invention discloses a permanent magnet deironing spiral conveyor, which comprises a spiral conveying mechanism, wherein the spiral conveying mechanism comprises a material cylinder and a spiral material delivery rod; the spiral material delivery rod is coaxially arranged in the material cylinder; a front cylinder body and a back cylinder body of the material cylinder are respectively provided with a material inlet and a material outlet; the material inlet is formed in the lower part of the cylinder body; a drum is coaxially arranged in the cylinder body at the material inlet and synchronously rotates along with the spiral material delivery rod; the circumference surface of the drum is provided with a permanent magnet surface with a concentric angle smaller than or equal to 180 degrees; a spiral material scraping plate is arranged at the inner wall, near the circumference surface of the drum, of the cylinder body, and is used for delivering a material to the material outlet; the axial length of the material scraping plate is greater than the axial width of the material inlet; the front part of the material cylinder penetrates through a cover cylinder of a vertical type powder grinder and enters a powder grinding area of a grinding device. The permanent magnet deironing spiral conveyor has the advantages that the permanent magnet deironing spiral conveyor is matched with the vertical type powder grinder, the material can be automatically scraped and delivered, a large amount of iron slag and iron chips in the grinding device are removed, the quality of a product is improved, the service life of the powder grinder is prolonged, and the maintenance cost of the vertical type powder grinder is lowered.