Position control system for main combustion area of grate-fired boiler

The utility model discloses a position control system for a main combustion area of a grate-fired boiler. The system comprises an AC 220V power supply input module, a DC 24V power supply module, a CPUprocessor, an electric actuator, a temperature detection module and a temperature sensor. Wherein the AC220V power supply input module is connected with the electric actuator and the DC24V power supply module; the AC 220V power supply input module supplies power to the electric actuator and the DC 24V power supply module. Wherein the DC24V power supply module is connected with the CPU processor,the electric actuator and the temperature detection module are both connected with the CPU processor, the CPU processor is further connected with a boiler control end, and the temperature sensor is connected with the temperature detection module. The grate-fired boiler has the beneficial effects that the problems of air leakage and slag fire falling of the burn-out section of the grate-fired boiler are fundamentally preven