Vanadium-nitrogen alloy ball automatic feeding system

The utility model provides an automatic vanadium-nitrogen alloy ball feeding system. The automatic vanadium-nitrogen alloy ball feeding system comprises a tunnel kiln, a first conveying frame, a second conveying frame and a feeding frame. One end of the first conveying frame is inserted into the bottom of the tunnel kiln, a plurality of conveying rollers are arranged on the upper portion in the first conveying frame, and all the conveying rollers are rotationally connected to the first conveying frame; the feeding frame is located at one end of the first conveying frame. A funnel is fixed to the top end of the feeding frame. A discharging opening is formed in the top of the lower side of the funnel, and two discharging grooves are hinged to the positions, at the discharging opening, of the funnel. A screen is obliquely arranged in the funnel, the angle between the bottom face of the screen and the horizontal plane ranges from 10 degrees to 15 degrees, and the screen extends from the interior of the funnel to