Preparation device of coal-based needle coke

The utility model discloses a coal-based needle coke preparation device in the technical field of needle coke preparation, which comprises a working table, electric telescopic rods are arranged on the left and right sides of the outer side wall of a crushing box through fixing plates, and connecting rods are fixedly arranged at the output ends of the two groups of electric telescopic rods; baffles are fixedly connected to the opposite sides of the bottom ends of the two connecting rods correspondingly, a discharging pipe is fixedly arranged on the right side of the bottom of the storage box, and second supporting stand columns are fixedly arranged on the left side and the right side of the outer side wall of the discharging pipe and located at the bottom of the workbench correspondingly. Discharging valves are connected to the tops of the opposite sides of the two second supporting stand columns through hinge shafts, discharging air cylinders are arranged at the bottoms of the opposite sides of the two second