NOVELTY - A civil straw vaporization combusting water boiler related to a water boiler for combusting wastes such as straw by vaporization comprises boiler body, first air intake chamber and second air intake chamber, the external boiler wall and internal boiler wall of boiler are made up of two circular steel cylinders of different diameters, there are upper, middle and lower three circular orifices in one side of boiler body.    USE - The civil straw vaporization combusting water boiler related to a water boiler is used for combusting wastes such as straw by vaporization (claimed).    ADVANTAGE - By vaporization combusting of straw and twice air blowing, the straw is compressed to combust in the first combustion chamber, and sufficiently combusts in the second combustion chamber by second air blowing, so the civil straw vaporization combusting water boiler related to a water boiler has a high combustion temperature and a good environmental protection effect.    DETAILED DESCRIPTION - A civil straw vaporization combusting water boiler related to a water boiler for combusting wastes such as straw by vaporization comprises boiler body, first air intake chamber and second air intake chamber, the external boiler wall and internal boiler wall of boiler are made up of two circular steel cylinders of different diameters, there is gap between two steel cylinders, a water jacket is composed, there are upper, middle and lower three circular orifices in one side of boiler body, there are light orifices each on the waists of boiler, four short pipes are respectively sealed up to the external boiler wall and internal boiler wall having four light orifices by welding, and they are interconnected with the second air intake chamber, the boiler cover matches with and are sealed up to the upper ends of external boiler wall and internal boiler wall by steel ring, the upper air inlet and the lower air inlet and the ash outlet have the same structure, the upper air inlet is cylindrical, the external pathway of one end of it matches with and is sealed up to the upper circular orifice of external boiler wall and internal boiler wall, the external boiler wall of upper air inlet has a folding ear, the folding ear in the side of boiler door matches with and is hinged to it, a same circular orifice is remained opposite to the upper air inlet, the lower air inlet matches with and is sealed up to the middle circular orifice of external boiler wall and internal boiler wall, the ash outlet matches with and is sealed up to the lower circular orifice of external boiler wall, the water jacket between the lower parts of external boiler wall and internal boiler wall are circumferentially sealed up by steel rings, the boiler grate platform is made up of steel rings and matches with and is sealed up to the internal pathway of bottom of internal boiler wall, there is a circular orifice in center of the boiler grate, there is a light orifice on the lower part of the external boiler wall, the external pathway of the return pipe matches with the internal pathway of light orifice of internal boiler wall and is sealed up to interconnect the water jacket, there are boiler feet on the bottom end of external boiler wall, there is a boiler chassis on the lower part of the ash outlet, there is a light orifice in the center of boiler chassis, the periphery of external pathway of boiler chassis matches with and is sealed up to the internal pathway of external boiler wall, the flue is made up of circular pipes, the external pathway of it matches with the opposite internal pathway having circular orifice same as the upper air inlet of boiler, there is a light orifice in each of opposite sides of internal boiler wall beside the flue, both ends of the water pipe respectively matches with and are sealed up to the light orifices in both sides of internal boiler wall, the water pipe and the water jacket are interconnected, there is a light orifice in each of external boiler walls in two sides on upper part of boiler, the external pathways of short ends of two pipes respectively matches with and are sealed up to internal pathways of two light orifices to form the water outtake pipe of boiler, the boiler rings are three rings made up of steel plates, the external diameter of the large ring is same as the internal diameter of the boiler cover, and that of the other ring are reducing, and they movably match with each other, the first air intake chamber is made of steel pipes, there is a tuyere cap, there are air gaps distributed in the tuyere cap, there are small light orifices distributed round the pipe wall, the external pathway of bottom of steel pipe matches with and is sealed up to the internal pathway of the central light orifice of boiler chassis, the external pathway of middle part matches with and is sealed up to the internal pathway of circular orifice of boiler so to compose the first air intake chamber, the second air intake chamber is a ring-shaped chamber made up of steel plates and having a diameter same as the internal boiler wall, there are small light orifices distributed on the surface, the external pathway of second air intake chamber matches with and is sealed up to the middle part of internal boiler wall, the first combustion chamber is configured below the second air intake chamber, and the second first combustion chamber is configured above the second air intake chamber.    DESCRIPTION OF DRAWING(S) - The drawing shows the front view of the civil straw vaporization combusting water boiler related to a water boiler.