Pneumatic circulating grain drier

Abstract

The invention discloses a pneumatic circulating grain drier and belongs to the technical field of drying equipment. A louver board is fixedly connected with a lower grain storage room; a hollow cavity between the louver board and a funnel-shaped structure is a distribution cavity; the hollow structure of the louver board forms an air inlet cavity which communicates with a hot air outlet of a heat source; a drying grain ascending tube passes through the air inlet cavity and reaches to the lower part of the louver board to form a feeding air inlet; the upper end of the drying grain ascending tube is located in an upper separation room; a coaxially arranged weather cap is arranged at the upper part of the drying grain ascending tube; a channel is reserved between the weather cap and the drying grain ascending tube to form a discharge air outlet; and the drying grain ascending tube forms a drying channel by virtue of a fan arranged at the top part of the upper separation room. The grain and hot air are in direct and full contact in the ascending process, so that the grain is dried; the drying effect is good by medium-free suction-type drying; the uniformity is good; the conditions of deterioration such as mildew and sprout of the grain in the links of storage, transportation, processing and the like can be effectively prevented; and the pneumatic circulating grain drier is simple in structure, convenient and fast to use, time-saving and labor-saving.

Description

technical field [0001] The invention belongs to the technical field of drying equipment, and relates to an air suction circulation type grain dryer. Background technique [0002] Most of the grain just harvested by farmers contains high water content. If the water content is not reduced in time, it will lead to mildew and germination and deterioration in storage, transportation, processing and other links. Therefore, grain drying has become an important part of post-production grain. An extremely important condition for food safety storage. Manual drying not only requires a large space, but also in the process of laying the grain on the drying site and storing the grain after drying, it is time-consuming, labor-intensive, and work-efficient, so the grain dryer Came into being. [0003] my country's grain dryer industry started from the initial extensive type and drum type. Since 2012, it has been gradually upgraded to a batch tower type grain dryer. Since 2013, a high towe...

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Problems solved by technology

[0009] This model has entered the market in recent years. The main consumer market of this product is for large-scale grain processing households, especially in the Northeast, Inner Mongolia, and Xinjiang. The farms in the above-mentioned areas are large grain growers, and family farms are relatively large. Many, the drying temperature of this product is high, the grain is mainly corn, other products cannot be dried, the advantage of this product is that the drying capacity is large, the output is high, but the drying cost is also high, its minimum temperature is 180 ℃, The above drying output mainly depends on high-temperature drying. The biggest problem of this product is: ①The dried corn is gelatinized, and the baked product can only be used as feed and cannot be eaten, and the starch yield is also very low; High dry cost; ③High investment; ④Limited scope of use and processing of the product

[0010] Combining the above three products, regardless of their advantages or disadvantages, they are all single-use and limited in application range, and they all use medium drying processing, resulting in an increase in production costs, and the increase in drying costs due to the increase in medium , to pass this input on to the user of the drying equipment

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