Horizontal Continuous Dryer

Abstract

The invention relates to a horizontal continuous dryer, which comprises a drying cylinder arranged on a bottom frame, a support frame, a hot air blower connected to a controller, a dehumidifier, a material hoist and a gear motor, and the inside of the drying cylinder is There are three-layer sleeves with coincident axes at intervals, and the adjacent cylinder walls are fixed by interlayer struts; the left end of the first sleeve in the innermost layer is connected to the air inlet, and the right end is connected to the material inlet. Leakage heat dissipation holes; the second and third sleeves and the inner wall of the drying cylinder are provided with helical angular boxes with opposite spiral directions; the left end of the second sleeve, the right end of the third sleeve and the left end of the drying cylinder A feeding port is provided respectively, and a turning-back feeding channel is formed between the three-layer sleeve and the drying cylinder, and the end of the turning-back feeding channel is connected with the discharge port. The invention pushes the material and the hot air into the turning-back feeding channel with the helical angular box, in which the material will be suspended and fully contacted with the hot air, which can effectively improve the drying rate and precipitation rate.

Description

Technical field [0001] The invention relates to an agricultural machine, in particular to a dryer for grain, in particular to a horizontal continuous dryer. Background technique [0002] my country is the world's largest grain producer and consumer, with a total annual grain output of about 500 million tons. According to statistics, the losses in the process of threshing, drying, storage, and transportation of grains in my country after harvest are as high as 15%-20%, far exceeding the 5% standard set by the UN Food and Agriculture Organization. Among these losses, as much as 5% of the grain is lost due to the humid climate, the wet grains cannot be dried in time or the safe moisture is not reached, and the grains such as mildew and germination are as high as 5%, which is quite large. [0003] At present, the grain dryers at home and abroad are mainly tower-type batch-type circulating grain dryers. The drying time of this type of dryer is very short, generally 3-5s. The material ...

AI Technical Summary

Problems solved by technology

Among them, the horizontal single-cylinder continuous dryer is mainly used for drying ore, feed and other materials. Due to its high temperature, generally at 250-300 ° C, it cannot be used for drying grain.

As for the horizontal multi-layer cylindrical dryer, since most of them use serpentine heat exchange tubes and are directly heated by a fuel engine, the heating temperature is relatively high, and the body is greatly deformed by heat.

Images