Pyrolysis device for waste circuit boards

A pyrolysis device for a waste circuit board, comprising:

• a pyrolysis furnace configured to perform pyrolysis treatment on the waste circuit board;
• a carbon black collection tank configured to collect carbon black formed after the pyrolysis treatment of the waste circuit board;
• a processing unit configured to crush the carbon black and separate magnetic metal from the carbon black;
• a helical conveyor, wherein a feeding end of the helical conveyor is located in the carbon black collection tank, a discharging end of the helical conveyor is connected to the processing unit, and the helical conveyor is configured to transfer the carbon black to the processing unit;
• wherein the processing unit includes a crushing assembly, and the crushing assembly includes a housing, two sorting tubes rotatably connected to the housing, a first guide plate disposed on the housing, two adjustment sections respectively provided in the two sorting tubes and connected to the housing, and a plurality of permanent magnets connected to each of the two adjustment sections;
• each of the two adjustment sections is configured to adjust a distance between each of the plurality of permanent magnets and an inner wall of a corresponding sorting tube in the two sorting tubes, so that the plurality of permanent magnets attract the magnetic metal in the carbon black;
• each of the two adjustment sections includes a connection shaft disposed on the housing, a first connecting sleeve and a second connecting sleeve sleeved on the connection shaft, and a driving member disposed on the second connecting sleeve;
• the driving member includes a plurality of mounting seats disposed on the second connecting sleeve, a plurality of adjustment shafts disposed on the plurality of mounting seats, respectively, a plurality of adjustment gears sleeved on the plurality of adjustment shafts, respectively, universal joints for connecting adjacent adjustment shafts, and a plurality of adjustment racks meshing with the plurality of adjustment gears, respectively;
• one of the universal joints is replaceable with a driving motor;
• both the first connecting sleeve and the second connecting sleeve are provided with a plurality of grooves configured to place the plurality of adjustment racks, respectively, an inner wall of each of the plurality of grooves is provided with a limiting groove, and a protrusion adapted to the limiting groove is provided along a length direction of each of the plurality of adjustment racks;
• the two sorting tubes are divided into a first sorting tube and a second sorting tube according to a moving sequence of the carbon black in the processing unit, wherein a rotation direction of the first sorting tube is opposite to a rotation direction of the second sorting tube, and the first sorting tube rotates in a counterclockwise direction;
• the housing is further provided with a second guide plate and a third guide plate, and a first preset distance exists between each of the second guide plate and the third guide plate and an outer wall of the second sorting tube;
• in an orthographic projection direction, a second preset distance exists between an axis of the first sorting tube and an axis of the second sorting tube, so that the carbon black sorted by the first sorting tube falls onto the second sorting tube;
• a distance between each of a plurality of permanent magnets in an adjustment section located in the first sorting tube and an inner wall of the first sorting tube is greater than a distance between each of a plurality of permanent magnets in an adjustment section located in the second sorting tube and an inner wall of the second sorting tube;
• each adjustment section further includes a plurality of connecting rods for connecting the first connecting sleeve and the second connecting sleeve;
• the plurality of connecting rods sequentially connect the plurality of permanent magnets located on a corresponding sorting tube to form a C-shaped structure, a diameter of the C-shaped structure is greater than an outer diameter of the second connecting sleeve and less than an inner diameter of the corresponding sorting tube;
• the driving member is connected to the plurality of permanent magnets, configured to change locations of the plurality of permanent magnets in the corresponding sorting tube and enable the plurality of permanent magnets to perform synchronous movement, so as to adjust the distance between each of the plurality of permanent magnets and the inner wall of the corresponding sorting tube;
• and
• the distance between each of the plurality of permanent magnets located in the first sorting tube and the inner wall of the first sorting tube is different from the distance between each of the plurality of permanent magnets in the adjustment section located in the second sorting tube and the inner wall of the second sorting tube.