grain dryer

Abstract

The invention discloses a grain dryer. The grain dryer comprises a drying tower, a lifter, a hot air furnace and a draught fan, wherein a tower cavity of the drying tower is divided into a left cavity, a middle cavity and a right cavity, the middle cavity is a grain drying cavity, a plurality of air supply pipes and air return pipes are arranged between the left cavity and the right cavity, a hot air conveying inner cavity is arranged in the left cavity or the right cavity, the hot air conveying inner cavity is communicated with the air supply pipes, the air return pipes are communicated with the left cavity and the right cavity, an air inlet of the draught fan is communicated with the hot air furnace, an air outlet of the draught fan is communicated with the hot air conveying inner cavity in the left cavity or the right cavity by virtue of an air outlet pipe; a waste gas exhausting pipeline is arranged on each of the left cavity and the right cavity; a grain unloading slot is formed in the top of the lifter; a grain input hose extending into the inner part of the drying tower is arranged on the grain unloading slot; a conveyor is arranged at the bottom of the drying tower; to-be-dried grains enter the drying tower from the top by virtue of the grain input hose; waste gas enters the left cavity and the right cavity by virtue of the air return pipes, and is exhausted by virtue of the waste gas exhausting pipeline, the grains are dropped onto the conveyor and enter a hopper of the lifter so as to be lifted again, and the operations are operated in a cycling manner until the grains are dried.

Description

technical field [0001] The invention relates to a drying device, in particular to a grain drying machine. Background technique [0002] As we all know, when the temperature and humidity conditions in the environment where the food is located meet the growth and reproduction of microorganisms, mildew will occur. That is to say, moisture and temperature are two important factors for the reproduction of microorganisms such as mold in grains (that is, grain mildew). In general, controlling the grain moisture below the safe moisture level may prevent the grain from going moldy. At present, the method for reducing grain moisture is the spontaneous combustion drying method. In the main grain producing areas, due to the large output and insufficient drying space, the moisture in the grain purchased by the grain depot often exceeds the safe water content, which is the main factor causing the grain mildew in the grain depot, especially when the grain purchase period is catching up w...

AI Technical Summary

Problems solved by technology

In the main grain producing areas, due to the large output and insufficient drying space, the moisture in the grain purchased by the grain depot often exceeds the safe moisture content, which is the main factor causing the grain mildew in the grain depot, especially when the grain purchase period is catching up with continuous cloudy days. So; in addition, even if the moisture content of the grain does not exceed the safe moisture content when entering the warehouse, due to spontaneous combustion and moisture return, the grain entering the warehouse needs to be dried regularly to ensure that the grain does not go moldy. Due to the limitation of the drying place of the grain warehouse, the Grain often cannot be dried on time, resulting in grain mildew in the grain depot

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