High humidity grain dryer

Abstract

The invention provides a high humidity grain dryer. A plurality of drying chambers which can be used for simultaneously drying various kinds of grains and are arranged side by side are arranged in a dryer body; ventilation plates with meshes are arranged around each drying chamber; a heat recovery room and a ventilation duct are shared by a plurality of drying chambers in the dryer body; the heat recovery room is arranged above the ventilation duct in parallel; the bottom surface of the ventilation duct is open and is directly communicated with each drying chamber; the heat recovery room is externally connected with a flue gas draught fan and a hot-blast stove through a gas flue duct; and the ventilation duct is externally connected with an air cooler. The dryer of the invention can prevent grains in different drying chambers from being mixed in the drying process, greatly reduces the configuration number of auxiliary equipment of a drying system, meets the demand for simultaneously drying various kinds of grains with different initial moisture or grains of different varieties, has obvious drying and energy-saving effects, is used as a matching technology of a large drying facility for intensively drying grains, and can greatly improve processing capacity and drying efficiency of the whole drying system.

Description

technical field [0001] The invention relates to the technical field of grain drying, in particular to a high-humidity grain dryer which can be used alone or as supporting equipment for large-scale centralized grain drying facilities. Background technique [0002] At present, the penetration rate of grain mechanized drying is very low, because of high energy consumption, high drying cost and poor adaptability. One of the important problems is that the existing grain drying equipment, whether it is a large tower dryer or a batch-type small dryer, is designed for how much heat energy is artificially provided and how much moisture is removed, and there is no special design for high humidity. The dryer is designed for the high-humidity characteristics of grain and the recovery and utilization of the waste heat and exhaust gas of the drying system. In the existing grain dryers, one machine can generally only dry one type of grain, and must be equipped with high-temperature combus...

AI Technical Summary

Problems solved by technology

Since the temperature of the hot air is much higher than the temperature of the environment and the grain, it will inevitably lead to: ①The drying body itself absorbs heat and heats up; ②The dryer loses the amount to the outside through the machine wall; The heat loss is very large. ④ When drying high-humidity grains, the lower layer is often dry and the upper layer is dew-condensed and moisture-absorbed.

It can be seen that the traditional drying method not only has high energy consumption and low efficiency, but also affects the quality of grain due to temperature rise.

In addition, it cannot meet the needs of different initial moisture and simultaneous drying of multiple different varieties of grains

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