利用拖拉机余热的农作物半干燥机组设计分析

Design and Analysis of Machine Tractor Semi-arid to Heat The Crop

为解决西南地区阴雨季节谷物容易发霉变质的问题,研究了利用发动机尾气余热来干燥谷物的半干燥机组,其主要内容包括:研究思路,发动机尾气流量,风机流量,热交换器流量及热交换的计算。经过分析和计算,经热交换器后的热空气和谷物相接触,热空气带动谷物在干燥管道内运动,同时对谷物进行干燥,随后进入干燥塔,待谷物进行干燥后,预计脱水率满足干燥要求,并且可以延缓霉变期7～8天,半干燥机组设计旨在用较低的干燥成本降低农业经济损失,具有较好的应用价值。

In order to solve the rainy season in Southwest moldy grain easy question, we study the use of engine exhaust heat to dry grain, semi-drying unit, the main contents include： research ideas; engine exhaust flow and fan flow Atnd heat flow and Calculation of heat exchange After analysis and calculation, the heat exchanger and the hot air after contact with cereal, hot air pipe led movement in the dry grain, while grain drying, and then into the drying tower, to be carried out dry cereal, is expected to meet the drying rate of dehydration requirements, and delay the mold of 7 to 8 days, the semi-drying unit is designed to lower the cost of drying under the reduction of agricultural economic losses, has a large value.