Soybean seed screening device

Abstract

The invention relates to a soybean seed screening device, and belongs to the field of agricultural equipment. The soybean seed screening device comprises a machine frame, a primary screening mechanism, a secondary screening mechanism and a tertiary screening mechanism; the primary screening mechanism comprises a conveying screen, a spiral conveyor and an electric component I; a feeding port I is formed in one end of the conveying screen, and a discharging port I is formed in the other end of the conveying screen; through holes are uniformly distributed in the bottom of the conveying screen; the secondary screening mechanism is an air duct for conveying the air volume; the tertiary screening mechanism comprises a roller screen which is obliquely arranged and an electric assembly II; screenholes are uniformly distributed in the cylinder body of the roller screen; one end, close to the discharging port I, of the roller screen is provided with a feeding port II, and one end, away from thefeeding port II, of the roller screen is provided with an impurity outlet; and a material collecting tank is arranged below the roller screen. The soybean seed screening device is used for screeningthe impurities with smaller diameters in the lifting operation through the conveying screen, then air separation is carried out on the materials to remove the light impurities, the screening of the soybean seeds is completed by using the roller screen to remove the large impurities, the soybean seed screening device is convenient and fast, and the screening efficiency is high.

Description

technical field [0001] The invention belongs to the field of agricultural equipment, and in particular relates to a soybean seed screening device. Background technique [0002] Soybeans are harvested, threshed and stored at one time in the farmland by machinery. During the harvesting process, soil clods, stones, stems and leaves, chaff and other debris will be mixed, resulting in high seed impurity content and poor sowing quality; and the harvested The seeds include shriveled or incomplete seeds, which will not be easy to germinate or will not germinate, and the survival rate is low, which affects the planting income. The processing of seeds needs to remove these impurities and keep the highest quality seeds. [0003] The screening of soybean seeds requires multiple cleaning procedures to remove impurities in soybeans, including light impurities, large impurities and small impurities, as well as moldy seeds. This makes the sowing quality and seedling quality of the screene...

AI Technical Summary

Problems solved by technology

[0004] There are also many kinds of soybean seed screening devices in the prior art, but the effect is not ideal. Take the air screen cleaning machine with mature technology as an example. During the screening process, the materials need to be lifted to a certain height for air selection to remove light impurities. In this process, impurities are not screened, and two layers of flat sieves with different apertures are used to screen out the large impurities and small impurities mixed in soybeans in turn.

There are many operating procedures and complex procedures. After winnowing, they pass through two layers of flat screens with different apertures in sequence. It cannot guarantee that the materials can be completely screened, and it is difficult to achieve a good screening effect. In addition, it is easy to screen soybean seeds together with impurities. In addition, reduce the screening efficiency

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