Heating and drying device and seed screening device

Abstract

The invention relates to a heating and drying device and a seed screening device. The seed screening device comprises the heating and drying device and a winnowing unit. The heating and drying devicecomprises a shell. A heating and drying cavity for drying seeds is formed in the shell. At least two guide plates are arranged in the heating and drying cavity in a staggered manner and an up-and-downspaced manner. In every two adjacent guide plates, the material falling end of the guide plate on the upper portion is higher than that of the guide plate on the lower portion. The motion track of the seeds in the heating and drying cavity is a reciprocating bending curve. The heating and drying device further comprises a vibration unit for driving the guide plates to vibrate. When the guide plates vibrate, the seeds can be evenly distributed on the guide face. The drying efficiency is high. The motion track of the seeds in the heating and drying cavity is the reciprocating bending curve, themotion track in the heating and drying cavity becomes longer, and the drying effect is quite good. Vibration conveying and drying of the seeds can be completed in one set of equipment, and the cost of the whole heating and drying device is reduced.

Description

Technical field [0001] The invention relates to the field of separating solids from solids by solid mixtures under the action of airflow, in particular to a heating drying device and a seed screening device. Background technique [0002] In agricultural production, it is necessary to select seeds to reduce the number of slumped grains during sowing and increase the yield of crops. The traditional screening methods are mostly manual screening or semi-automatic screening. After screening, the seeds need to be air-dried to reduce the moisture content of the seeds and facilitate the preservation of the seeds. Whether it is manual screening or semi-automatic screening, the labor cost is high, the screening efficiency is low, and the drying is also It takes a long time. [0003] An agricultural seed drying and sorting device is provided in the Chinese invention patent application with the application publication number CN109127419A. The device first places the seeds in a drying box to d...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a heating and drying device for solving the problem of low drying efficiency of seeds caused by the accumulation of seeds in the prior art. At the same time, the present invention also provides a seed screening device for solving the current In the prior art, the structure of the screening device is complicated and the cost is high due to the need to set up a drying unit and a vibrating conveying unit

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