A Combined Corn Seed Grading Machine

Abstract

The invention relates to a combined corn seed classifier and relates to the field of agricultural machinery. The combined corn seed classifier is characterized by comprising a frame unit, a roller screening unit, a plane screening unit, a tilt adjusting unit, and a material input / output unit. The frame unit comprises a square steel framework, a front upper baffle, a right baffle, a left baffle and a rear baffle. The roller screening unit comprises a primary roller, a secondary roller, support spokes and a sprocket. The primary roller and the secondary roller are fixed on a same shaft through the support spokes and are connected with a motor output shaft through the sprocket and a chain. Rectangular holes are arranged in the primary and secondary rollers by punching. The primary and secondary rollers are provided with raised ribs along the rectangular hole direction. The plane screening unit comprises a screen frame, a vibrating motor, a plane screen, and spring plates. The screen is fixed on the screen frame. The vibrating motor behind the screen frame provides power. The tilt adjusting unit is in an operating crank type. The combined corn seed classifier in the screen modular design is convenient to replace and mount, can classify materials into two to seven classes, and is more universal and utilization rate.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a combined corn seed classifier. Background technique [0002] Corn is an important food crop in my country. Since 2009, corn has become the grain crop with the largest sown area in my country. In 2012, the total sown area and total output of corn ranked first among the three major grain crops. Corn occupies a dominant position in my country's grain production. The increase in its output directly affects food security in our country. In 2011, the sown area of ​​corn in my country reached 501.5 million mu, with a total output of 383.5 billion kg, and an average unit yield of 382.4 kg / mu, which is only half of the average yield of developed countries such as the United States and France. In the case of decreasing arable land year by year, the problem of increasing the average yield of corn per unit area is more serious. [0003] Precision seeding has become one of ...

AI Technical Summary

Problems solved by technology

[0004] The seed metering devices of the existing corn planters in my country are mostly mechanical, air suction, air blowing, etc., but because the corn seeds are not graded, the shape and size of the seeds are uneven, resulting in re-seeding, missed sowing, and so on during mechanical sowing. Seed mechanical damage and other problems

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