Chain type fire grate coal gasification environment-friendly smokeless furnace

The chain type fire grate coal gasification environment-friendly smokeless furnace comprises a furnace body, a chain fire grate and a coal feeding hopper, a smoke outlet is fixed to one side of the furnace body, a purification structure is arranged at the position, located at the smoke outlet, of the outer side of the furnace body, a hearth is arranged in the furnace body, and an arc-shaped rear arch is fixed to the side, close to the smoke outlet, of the interior of the furnace body; a coal valve plate is installed between the coal feeding hopper and the hearth, a front arch is arranged on the side wall of the side, close to the coal feeding hopper, in the boiler body and the upper wall of the boiler body, and a smoke passing arch wall is fixed to the side, close to the smoke outlet, of the front arch. By arranging the front arch and the arc-shaped rear arch, smoke dust generated by combustion is gathered in the hearth, the smoke dust falls onto the chain grate stoker and is discharged through the slag disch