Seed screening device

Abstract

The invention relates to a seed screening device, and belongs to the field of agricultural equipment. The seed screening device comprises a rack, and a stand column is fixedly arranged above the rack;a box is arranged above the stand column; a Z-shaped screen is arranged in the box, and inclined panels are arranged on the two sides of the screen; a feeding hopper is arranged above one end of thescreen, and the other end of the screen communicates with a discharge hopper through a discharge opening in the box; the end, close to the feeding hopper, of the screen is higher than the end, close to the discharge hopper, of the screen; a vibration assembly is arranged below the box; the vibration assembly includes a motor, a belt wheel connected to the motor, an eccentric shaft, a vibration rodconnected to the eccentric shaft and a vibration block connected to the vibration rod; the vibration block is connected to the bottom of the box; and the bottom of the box is connected to the rack through a buffer spring. The seed screening device is improved in the aspects of materials and shape construction of the screen through methods of prolonging the flowing path of seeds on the screen andincreasing the flow direction of the seeds; and in cooperation with the vibration screening, the fine screening degree is improved, and the impurity content is reduced.

Description

technical field [0001] The invention belongs to the field of agricultural equipment, and in particular relates to a seed screening device. Background technique [0002] Seeds need to be screened during agricultural planting. At this time, a seed screening machine is needed. The traditional seed screening machine cannot directly remove light impurities in the seeds, and the screening and grading process is not thorough. The seeds screened out in this way have a high impurity rate, which not only has poor seeding quality, but also affects seed emergence and production development. In addition, in the existing seed screening devices, the selection of screen materials is generally metal screen and stainless steel screen. When the seeds fall from the feed port to the surface of the screen, they will collide with the screen, which will easily cause damage to the surface of the seeds and affect the quality of the screen. Seed quality. Contents of the invention [0003] In order...

AI Technical Summary

Problems solved by technology

[0002] Seeds need to be screened during agricultural planting. At this time, a seed screening machine is needed. The traditional seed screening machine cannot directly remove light impurities in the seeds, and the screening and grading process is not thorough.

The seeds screened out in this way have a high impurity rate, not only poor sowing quality, but also affect seed emergence and production development.

In addition, in the existing seed screening devices, the selection of screen materials is generally metal screen and stainless steel screen. When the seeds fall from the feed port to the surface of the screen, they will collide with the screen, which will easily cause damage to the surface of the seeds and affect the quality of the screen. seed quality

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