Online threshing blade dirt clearing device

The utility model provides an online threshing blade dirt clearing device comprising a handheld steam spray gun. The online threshing blade dirt clearing device is characterized in that the handheld steam spray gun is connected with a high-pressure steam delivery pipe of a steam generator. The steam generator comprises a cavity and a shell body. The cavity is formed in the steam generator. A coiler is arranged in the cavity. A water inlet, a steam outlet and an oil injection port are formed in the wall of the shell body. One end of the coiler in the cavity penetrates through the water inlet in the wall of the shell body and is communicated with a water tank. The other end of the coiler penetrates through the steam outlet in the wall of the shell body and is connected with the high-pressure steam delivery pipe. The oil injection port in the wall of the shell body is connected with a combustion device. The combustion device is connected with the fuel oil delivery pipe. High-temperature and high-pressure steam a