Overflow feeding waste plastic thermal cracking reactor

The utility model discloses a waste plastic thermal cracking reactor with an overflow feeding function. The waste plastic thermal cracking reactor comprises a reactor body, an overflow mechanism and a temperature detection mechanism, a feeding hole is formed in one side of the top end of the reactor body, and a discharging pipeline is arranged at the bottom end; the overflow mechanism comprises a feeding mechanism, a mixing mechanism and an overflow pipe; the whole overflow mechanism is U-shaped, the mixing mechanism is horizontally arranged, and the feeding mechanism and the overflow pipe are fixedly connected with the mixing mechanism; a feeding port of the feeding mechanism is higher than a discharging port of the overflow pipe; the overflow pipe is connected with a feeding hole of the reactor body; the temperature detection mechanism comprises temperature sensors, and the temperature sensors are spirally arranged on the outer surface of the reactor body from the top end to the bottom end of the reactor bo