Quality appraisal of the seed grain dryer

WU Yunge, ZHANG Rongrong, WANG Dongming, He jun, ZHANG Manyuan

(Products Quality Identification Center, Zhejiang Testing and Inspection Institute for
Mechanical and Electrical, 31000, China)

Abstract: Aiming at the drying seed germination rate is decreased after dried by seed grain dryer, the various factors that affecting the seed germination was summarized, the temperature parameters and the seed germination after drying were tested, the influence of temperature parameters to the dried seed germination was analysed. an analysis method of the grain dryer drying temperature was proposed, the logical layout temperature sensor was used, and the real time temperature in the grain dryer was monitored. The results showed that, the main reason of seed germination decreased after drying are these the temperature sensors in the machine have deviation, affect the accuracy of drying temperature; because of the hot air channel structure design, the highest temperature point will leading the adjacent grain temperature increased; uneven distribution in the machine led to local grain temperature higher than other parts; unreasonable temperature sensor arrangement, can not feedback the real highest temperature. Through the boot test of grain dryer drying the seed, detected the temperature parameters, compared the seed germination after drying, to analysis the effects of temperature parameters to the dried seed germination.

Key words: seed grain dryer; temperature distribution; seed germination rate