Screening grain by wind is a common method of grain cleaning and grading. Impurities and grain particles of different sizes are separated by wind. Its principle mainly includes the interaction between grain and wind, the action mode of wind and the separation process of grain particles.
The principle of grain screening by wind is based on the interaction between grain and wind. Impurities in grains and grains have different weight, shape and surface characteristics. By controlling the magnitude and direction of wind power, the relative motion relationship between grain and wind power can be changed, so as to realize the separation of impurities and grains. Grain will be affected by airflow in the process of wind screening, while impurity particles and small particles will be taken away by wind because of their smaller density, while larger grains will be kept on the screen because of their larger weight.
Secondly, wind power is mainly generated by fans or air-cooled screen cleaners. The action modes of wind power include horizontal wind, vertical wind and composite wind. Horizontal wind means that the wind blows the grain along the horizontal direction, which is mainly used for the shedding of impurities; Vertical wind means that the wind blows the grain in the vertical direction, which is mainly used to separate light impurities, dust and some debris; Composite wind refers to the simultaneous application of horizontal and vertical wind forces for further.
Post time: Dec-16-2024
