High-speed photography analysis on process of threshing of axial flow threshing and separating installation

The process of threshing of paddy and motion manner of threshed kernels by the assembled of plank-tooth and helical vanes of axial flow threshing and separating installation was photographed on line by the high-speed photography. By observing and analyzing the reproduction of the pictures of photographed the kernels were separated from the branch with stripping, impacting, compacting, colliding by the threshing units and rubbing of the material. The rice panicle was in ring form during the threshing period and the kernels scattered from center about the ring. The paddy came into being the thin layer rapidly, rotated and surged ahead under the joint action of the threshing parts and the guide blades as they entered the threshing space. The paddy layer was compressed instantly as it subjected stripping and rubbing and was thrown away assuming a fluffy state soon after. It made the threshed kernels have the chance to separate from the fluffy stalk layer.