Counter-flow type grain drying device

Abstract

The invention relates to a grain drying device for drying grains, in particular to a counter-flow type grain drying device. The counter-flow type grain drying device comprises a barn, a drying bin and a recycling bin, wherein the drying bin is arranged at the lower part of the barn, and the recycling bin is arranged at the lower part of the drying bin; a packing auger conveyer is arranged in the recycling bin, the output end of the packing auger conveyer is connected with the input end of a material lifter, the output end of the material lifter is communicated with a feeding hole of the upper end of the barn, and a plurality of inclined guide plates are arranged in the drying bin; exhaust holes are formed in the upper end of the drying bin; material guiding ventilating boards are fixedly mounted in the recycling bin and are arranged in an inclined manner, and air inlets are formed in the side wall of the recycling bin positioned below the material guiding ventilating boards. When the counter-flow type grain drying device works, drying air flow flows from bottom to top, so that a grain heating path is prolonged, and meanwhile, the grain dropping speed is reduced; the drying efficiency, the drying speed and the heat efficiency are high; energy consumption reduction and energy saving are facilitated.

Description

technical field [0001] The invention relates to a grain drying equipment used for drying grain, in particular to a countercurrent grain drying equipment. Background technique [0002] The barn of the existing circulating grain dryer is set above the drying bin, and the recovery bin is set under the drying bin. The hot air enters from the air inlet on one side of the drying bin and is discharged from the air outlet on the other side. The grains are heated and dried by hot air during the falling process, and the grains that fall into the recovery bin are transported to the barn through the lifting device, and the drying cycle is repeated in this way. With this kind of dryer, the hot air flows horizontally in the drying bin, the grains fall fast and the heating time is short, the grains are only heated briefly in the drying bin, and no longer heated in the recovery bin, and the drying efficiency of a single cycle is low , the exhaust outlet temperature is high, and the thermal...

AI Technical Summary

Problems solved by technology

With this kind of dryer, the hot air flows horizontally in the drying bin, the grains fall fast and the heating time is short, the grains are only heated briefly in the drying bin, and no longer heated in the recovery bin, and the drying efficiency of a single cycle is low , high exhaust temperature, low thermal efficiency

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