Abstract: In order to study the impact law of power consumption of air-and-screen cleaning device， the fan rotational speed， fan rake angle and crank rotational speed were taken as the experimental factors， and power consumption as the evaluation index. Rice cleaning test was carried out on the cleaning test-bed. The regression model was built, and the main cause of affecting the power was analyzed and provided as the basis for design and manufactory of air-and-screen cleaning device．

Key words: cleaning device, air-and-screen, power consumption