Experimental study on negative pressure grading for peanut

Authors

YIN Shuangshuang, College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding, Hebei 071000, China
JIANG Haiyong, College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding, Hebei 071000, China
LI Na, College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding, Hebei 071000, China
FENG Yongfei, College of Mechanical and Electrical Engineering, Agricultural University of Hebei, Baoding, Hebei 071000, China

Abstract

A peanut negative pressure grading device with simple structure, good grading effect and easy operation was designed based on Laval nozzle structure. Five factors affecting the vacuum degree in negative pressure tube were simulated and the structure size of air duct was determined based on Fluent. CFD-DEM coupled simulation software was used to simulate the negative pressure sorting of two kinds of peanuts with the same volume and small density difference, and the sorting differences of high quality and inferior grade peanuts were obtained. On this basis, taking the sorting height, conveyor belt speed and air inlet speed as experimental variables, the negative pressure grading experiment of peanut was carried out by setting up a negative pressure grading test bench. The experiment proves that the negative pressure sorting device based on Laval nozzle structure can complete the negative pressure sorting operation of peanuts.

Publication Date

7-28-2018

First Page

86

Last Page

89

DOI

10.13652/j.issn.1003-5788.2018.07.018

Recommended Citation

Shuangshuang, YIN; Haiyong, JIANG; Na, LI; and Yongfei, FENG (2018) "Experimental study on negative pressure grading for peanut," Food and Machinery: Vol. 34: Iss. 7, Article 18.
DOI: 10.13652/j.issn.1003-5788.2018.07.018
Available at: https://www.ifoodmm.cn/journal/vol34/iss7/18

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