Multi-stage crushing device for energy storage type lithium battery cathode material petroleum coke

The invention relates to a multi-stage crushing device, in particular to a multi-stage crushing device for energy storage type lithium battery cathode material petroleum coke. According to the petroleum coke multistage crushing device for the energy storage type lithium battery negative electrode material, petroleum coke can intermittently fall off and be crushed, accumulation is prevented, and the crushing effect is improved. An energy storage type lithium battery cathode material petroleum coke multi-stage crushing device comprises a grinding cylinder, supporting frames, a feeding frame and the like, the supporting frames are fixedly connected to the outer bottom of the grinding cylinder in a front-back symmetrical mode, and the feeding frame is fixedly connected to the middle of the top of the grinding cylinder in a penetrating mode. A servo motor is firstly started to rotate reversely to drive a driving shaft to rotate reversely, petroleum coke is poured into a feeding frame, an intermittent feeding pipe