Batched circulating dryer used for wheat and drying method

Abstract

The invention provides a batched circulating dryer used for wheat and a drying method. The dryer comprises a hot blast heater, an elevator, a first draught fan, a second draught fan and a drying tower. The drying tower comprises a second tempering section, a first drying section, a first tempering section, a second drying section and a grain unloading section. Corner boxes are installed in the first drying section and the second drying section. The wheat drying method includes the following steps that the hot blast heater is ignited, and to-be-dried wheat enters the drying tower; the first draught fan and the second draught fan are started, a motor of the grain unloading section is started to unload grain, and a system enters the circulating drying process; during primary circulation, the wheat moves downwards from the top of the drying tower and passes through the second tempering section, the first drying section, the first tempering section and the second drying section to be subjected to heat exchange, and the wheat enters the grain unloading section after being dried twice; the wheat enters the elevator through the grain unloading section and is elevated again into the drying tower, and the next time of circulation is conducted; and after the wheat participates in multiple times of circulation, drying of the batched wheat is completed.

Description

technical field [0001] The invention relates to a batch type circulation dryer for wheat and a drying method, which can realize multiple times of drying in one cycle, and is suitable for drying operations of grain crops such as wheat. Background technique [0002] At present, there is a lack of drying equipment and process points for wheat drying in China. Spring wheat in Northeast China is mostly dried with corn continuous dryers. Drying mostly uses a circular dryer for rice, and the slow-subite does not match the actual drying moisture gradient of the wheat, resulting in low operating efficiency, poor economy, high cycle times, long drying time, severe wheat grain fragmentation, energy waste and large carbon emissions. The problem objectively restricts the progress of wheat mechanized drying, so that the traditional drying method is still mostly used for wheat drying. [0003] There are great differences between wheat, corn and rice in internal structure, appearance and p...

AI Technical Summary

Problems solved by technology

[0002] At present, there is a lack of drying equipment and process points for wheat drying in China. Spring wheat in Northeast China is mostly dried with corn continuous dryers. Drying mostly uses a circular dryer for rice, and the slow-subite does not match the actual drying moisture gradient of the wheat, resulting in low operating efficiency, poor economy, high cycle times, long drying time, severe wheat grain fragmentation, energy waste and large carbon emissions. The problem objectively restricts the progress of wheat mechanized drying, so that the traditional drying method is still mostly used for wheat drying

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