Multi-stage crushing device for recycling waste circuit boards

The utility model provides a multi-stage crushing device for recycling waste circuit boards, and relates to the technical field of circuit board recycling. Comprising a mounting frame, a crushing assembly for crushing the circuit board and a bearing plate mounted on the mounting frame, a conveying assembly and a first crushing assembly for primarily crushing the circuit board are mounted on the bearing plate, the crushing assembly is mounted on the mounting frame, and the output end of the conveying assembly communicates with the input end of the crushing assembly; a screening assembly used for screening the circuit board is arranged at the output end of the smashing assembly. According to the technical scheme, large circuit boards are cut into small blocks, and the situation that the large waste circuit boards directly enter the smashing assembly, and consequently the smashing effect is poor is avoided; the screening assembly arranged at the output end of the crushing assembly can screen the circuit board wh