Screen of ball mill

The utility model discloses a ball mill screen, and particularly relates to the technical field of ball mills, which comprises a first screen, a second screen, an outer fixing ring, a clamping groove, a clamping ring and a plurality of connecting rods, and the outer fixing ring, the clamping groove, the clamping ring and the connecting rods help the first screen and the second screen to operate. The first screen and the second screen are arranged, the first screen and the second screen are clamped in the outer fixing ring through the connecting rod and the clamping ring, and when different materials are ground, the first screen or the second screen can be rotated through the adjusting handle arranged on the first screen or the second screen; the air permeability of the screens is adjusted by changing the coincidence degree of meshes in the first screen and the second screen, so that the air speed and the material flow speed in the mill are adjusted and improved, the mill can adapt to grinding of different mat