id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ajst-12704	You, Guoliang	Research and Experiment on Hot Air Cleaning Device of Combine Harvester	2023	3	.pdf	application/pdf	1450	75	62	At present, there are no products of hot air fans at home and abroad, so this topic is the first time to propose research and development of hot air fans, which can greatly improve the cleaning efficiency of fans. Airflow volume design of hot air flow: V=βq/ρμ Where; V is the rate of airflow volume,𝑚 /s; q- is the machine feeding rate , kg/s；ρ is the density of air1.20kg/𝑚 ; μ is the mixing concentration ratio of the air stream carrying impurities, and the general value range from 0.2~0.3; β is the proportion of impurities in the cleaning materials to the machine feeding rate, and when fully fed, the value for the crop is generally taken 0.15~0.2, and 0.1~0.15 for wheat and rice respectively .	cache/ajst-12704.pdf	txt/ajst-12704.txt