Electromagnetic grading and sorting device for seeds

Abstract

The invention discloses an electromagnetic grading and sorting device for seeds. The device comprises a feeding mechanism, a magnetic separation mechanism and a discharging mechanism. The feeding mechanism comprises a feeding port, a feeding screw, an outer roller, a reverse pushing screw, an inner barrel, a pushing screw rod, an inner screw brush, a first baffle, a second baffle and a screen. Themagnetic separation mechanism comprises a first-stage permanent magnet screening assembly and a second-stage variable electromagnetic assembly which are communicated up and down. The first-stage permanent magnet screening assembly comprises a first variable-frequency and variable-speed motor, a strong magnetic roller, a roller and a conveying belt. The second-stage variable electromagnetic assembly comprises a second variable-frequency and variable-speed motor, an adjustable electromagnet and a rectangular electromagnetic chuck. The discharging mechanism comprises a superior seed dischargingport, a fine seed discharging port and an inferior seed discharging port. The method breaks through four key technologies of variable magnetic field application, low mechanical damage screening, rapidcrack identification and quantitative grading, realizes seed surface crack damage detection and seed batch selection, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of seed sorting, in particular to a seed electromagnetic grading and sorting device. Background technique [0002] Seeds consist of four main parts: cotyledon, germ, hypocotyl, and radicle. The surface of the seed is covered by the seed coat, which has the function of protecting the seed from external mechanical damage and preventing the invasion of diseases and insect pests. If there are cracks on the surface of the seeds, it will cause the invasion of diseases and insect pests, thereby destroying the internal structure of the seeds, which is the main problem that causes the seeds to fail to germinate. [0003] At present, the detection of seed cracks is mainly through manual screening, which has a long cycle, heavy labor, high cost and cannot realize batch crack defect detection, and most of the seed screening machines on the market are developed for a specific seed, such as ramie cadmium-resistant specie...

AI Technical Summary

Problems solved by technology

At the same time, due to the small cracks on the surface of the seeds and the large number of seeds, the existing seed screening machines and magnetic separation equipment have the problems of singleness, low efficiency, and poor magnetic separation performance.

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