Magnetic suction precision sowing method and its equipment

Abstract

The magnetic suction sowing method for sowing small granular seed of vegetable, flowers and other palnt is characterized by that it has a magnetic suction seed-taking device formed from magnetic suction head, electromagnetic coil and diamagnetic sleeve, when the electromagnetic coil is current-conducted, the magnetic suction head can produce a certain magnetic induction strength, so that a certain magnetic field is produced in the low end of the magnetic suction head, it can utilize the generation and removal of magnetic force to adsorb and sow seed so as to implement precise sowing. Said sowing machine includes sowing mechanism, magnetic suction seed-taking device, seed box, conveying table fram, conveyer belt, hole plate and motor, etc. Said sowing mechanism is parallelly-connected parallelogram mechanism.

Description

Technical field [0001] The invention relates to a sowing method suitable for precision sowing of small-particle seeds such as vegetables, flowers and seedlings, in particular to a magnetic suction precision sowing method. The invention also relates to a precision sowing device for plug seedlings designed by using the method. Background technique [0002] In the early 1970s, the United States first introduced the industrial plug seedling technology. Because this technology has the characteristics of high speed, high quality and high yield, it has been rapidly promoted in other agricultural economically developed countries such as the Netherlands, France, Germany, Japan and other countries. . One of the key technologies to be solved in industrial plug seedling technology is the precision on-demand sowing of seeds. Since most vegetables and flower seeds are small in size, light in weight and irregular in shape, it brings difficulties to the precision sowing of seeds. At presen...

AI Technical Summary

Problems solved by technology

Air-suction sowing is carried out by means of air-suction. At present, needle-type (also known as nozzle-type) precision seeders and suction-cup precision seeders commonly used at home and abroad are air-suction precision seeders. There are no specific requirements for the shape of the seeds, and the sowing accuracy is high, but the suction pipe or suction hole is easy to be blocked, and the suction nozzle needs to be replaced for seeds of different particle sizes, and the manufacturing cost and technical requirements are high; mechanical precision seeding is carried out mechanically Picking and sorting seeds, such as the tooth disc precision seeder manufactured in China, uses the holes on the tooth disc to allow each tooth to scoop up a seed from the seed box and accurately drop it into the seed trough. In the holes of the plug tray, this sowing method has high requirements on the shape of the seeds. Generally, the seeds need to be pelletized, which is easy to damage the seeds when scooping up the seeds, and the sowing accuracy is not high; the electromagnetic vibration precision Sowing uses the principle of electromagnetic vibration sorting seeds. Our patent 93246722.9 discloses such a seeder: it is composed of a seeder, an electromagnet and a synchronizer. The electromagnet receives the pulse signal transmitted by the synchronizer to drive the seeder. The vibrating plate of the device swings, and the seeds flowing out from the vibrating box move along the trapezoidal groove set on the seeding tray, and are restrained by the ratchet teeth in the groove, moving forward evenly and falling into the seeding pipe, and then the seeding The tube is introduced into the hole. This sowing method can be adapted to sowing seeds of various shapes, but the single seed precision sowing rate is low and the reseeding rate is high, which is more suitable for drill sowing: In recent years, some people have also studied the use of magnetic force for sowing, such as A precision seeder disclosed in Chinese patent 90227208.X: it consists of a seed box, a seed meter box, a valve, etc. The seed meter box is equipped with a valve, and there is a magnetic switch in the seed box to control the opening of the valve , the valve is opened, and the seeds fall from the round hole of the seed box into the hole. This sowing method is still mechanical sowing, but it uses magnetic force instead of mechanical force when opening the valve. This sowing method also has vulnerable seeds, sowing The disadvantage of low precision

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