Flow splitting hole stove grate and hot-air stove lattice brick supporting system

The invention relates to a flow splitting hole stove grate and a hot-air stove lattice brick supporting system. The flow splitting hole stove grate comprises a stove grate body which is integrally molded by casting, the stove grate body is divided into an upper segment, a middle segment and a lower segment in the height direction, a plurality of small holes are evenly distributed in the upper segment, wherein any 3 adjacent small holes are all arranged in equilateral triangles, every 3 adjacent holes are taken as one set to evenly form a plurality of hole sets, the middle segment and the lowersegment of each hole set are provided with a large hole, and the bottoms of the 3 small holes of each hole set communicate with the top of the corresponding large hole through inclined holes. According to the flow splitting hole stove grate, the small holes of the upper segment is used for being matched with ventilating lattice holes in lattice bricks, the large holes are adopted for the middle segment and the lower segm