Air-suction cell seed distributor

Abstract

The invention discloses an air-suction cell seed distributor which comprises a distributor shell, a seed chamber, a seed-clearing brush, a discharge plate, an air cutoff stopper, a secondary seed charge girdle device and a shaft. The distributor shell comprises a front end cover, a cover plate, a belt and an external fixed plate. The shaft is mounted on the distributor shell, the discharge plate is positioned by the shaft and fixed onto the external fixed plate through bolted connection, the front end cover is positioned on the upper portion of the discharge plate, the air cutoff stopper is positioned in a negative-pressure air chamber of the discharge plate, the seed-clearing brush is mounted on the inner side of the front end cover, and the secondary seed charge girdle device is welded on the inner wall of the belt. The air-suction cell seed distributor can be divided into a seed taking area, a seed-clearing area, a seed carrying area and a seed throwing area. Seeds in the seed taking area enter cell holes under the action of negative pressure and the gravity of the seeds, redundant seeds at the edges of the cell holes are brushed back into the seed chamber by the seed-clearing brush in the seed-clearing area, the moving area of the seeds can be limited by a seed protecting plate in the seed carrying area, the negative pressure is cut off by the air cutoff stopper in the seedthrowing area, and the seeds are thrown under the action of the gravity of the seeds. The requirements for seed arrangement negative pressure and damage to the seeds can be effectively reduced, the sowing qualification rate of the seed distributor is increased, and the seed distributor is suitable for precision sowing of irregular seeds with medium and large particle sizes and shapes.

Description

technical field [0001] The invention relates to a seed metering device, in particular to an air-suction socket seed metering device for seeds with medium and large particle diameters, especially irregular shapes, and belongs to the field of agricultural mechanization engineering. Background technique [0002] Precision sowing can save seeds and reduce thinning operations. Studies have shown that uniform plant spacing is conducive to crop growth and increased yield. Seed metering device is the core component of precision sowing technology, and its working performance directly affects the sowing accuracy, uniformity, seed emergence rate, etc. With the development of precision seeding technology in recent years, mechanical seed metering devices have been widely used due to their low production costs. However, mechanical seed metering devices have high requirements on the shape and size of seeds. During the seeding process, it is easy to cause damage to seeds. Damage, the speed...

AI Technical Summary

Problems solved by technology

With the development of precision seeding technology in recent years, mechanical seed metering devices have been widely used due to their low production costs. However, mechanical seed metering devices have high requirements on the shape and size of seeds. During the seeding process, it is easy to cause damage to seeds. Damage, not too fast

The pneumatic seed metering device does not have strict requirements on the size and shape of the seeds, has good versatility, and can increase the operating speed of the seeder, but has high requirements on the fan and consumes a lot of energy

[0003] The air-suction seed meter has good adaptability to small-sized seeds, and the adsorption rate is closely related to the power of the fan. For medium and large-sized seeds, the fan power is required to be high, and the adsorption rate is low during the seed-carrying process. , the missed seeding rate is high, the qualified rate is low, and the seeding effect is poor

At present, the domestic sowing of medium and large-sized plant seeds mainly relies on mechanical seed metering devices, which have poor adaptability to irregularly shaped seeds, and the adsorption of pneumatic seed metering devices is slightly insufficient during operation.

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