PVC-O material level sound-light alarm device

The utility model discloses a PVC-O material level sound-light alarm device which comprises a hopper, a mounting plate, a through hole, a bolt, a sound-light alarm body, an inductor, a cross plate, a motor box, a blanking plate, a discharge port, a driving motor, a rotating shaft, a first connecting ring, a first brush, a sliding block, a second connecting ring, a second brush, a third connecting ring, a connecting block and a barrier plate. A mounting plate is fixedly mounted at one end of the hopper, a through hole is fixedly formed in the mounting plate, a bolt is in threaded connection with the interior of the through hole, an audible and visual alarm body is fixedly mounted at one end of the mounting plate, an inductor is fixedly mounted in the hopper, a cross plate is fixedly mounted in the hopper, and a motor box is arranged at the upper end of the cross plate; a discharging plate is fixedly installed in the lower end of the hopper, a discharging opening is fixedly formed in the discharging plate, a dr