Dual-cavity type pneumatic seed sowing device

Abstract

The invention belongs to a seed sowing device in agricultural machinery, and particularly relates to a dual-cavity type pneumatic seed sowing device which comprises a left air chamber, a right air chamber, a left seed sucking disc, a right seed sucking disc, a seed filling cavity, a seed discharging pipe, a seed discharging shaft, a seed inlet adjusting plate and a seed unloading block. The left seed sucking disc and the right seed sucking disc as well as the left air chamber and the right air chamber are respectively and symmetrically mounted on the left side and the right side of the seed filling cavity in the axial direction of the seed discharging shaft. The seed filling cavity is divided into a seed filling cavity and a seed discharging cavity by a splitter plate in the seed filling cavity. A plurality of groups of seed sucking holes are formed in the surface of the seed sucking disc in the circumferential direction, and seed mixing teeth are arranged on the edges of the seed sucking holes. The seed discharging pipe can swing left and right. The two seed sucking discs are used for seeding at the same time or in sequence or independently, and the seeding quantity and the seeding hill spacing as well as the seeding line spacing can be changed on the premise of realizing the precision seeding. The dual-cavity type pneumatic seed sowing device is suitable for precision hole sowing of crops such as rice, cotton, corns and beans.

Description

technical field [0001] The invention belongs to a sowing machine in agricultural machinery, and in particular relates to a double-cavity pneumatic seed metering device, which is suitable for precise hole sowing of rice, corn, cotton, beans, vegetables, tobacco and other crops. Background technique [0002] Mechanized rice planting technologies in my country mainly include organic transplanting, machine direct seeding, and machine shallow planting. Machine direct seeding is increasingly popular with farmers because of its advantages of high operating efficiency, cost-saving and labor-saving, and easy operation. Precision hole direct seeding is an advanced rice machine direct seeding technology at present, which can accurately and evenly form holes and distribute the germinated rice buds in the field according to the requirements of planting row spacing. At present, more than 50% of the rice production area in my country is hybrid rice, and its direct seeding planting requirem...

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Problems solved by technology

[0003] Chinese patent ZL200620028682.8 discloses a double-disc air-suction precision seed metering device, which has two seed-filling chambers and has a relatively large structure size. At the same time, the seed metering device does not use positive pressure to adsorb the seed suction holes The seeds are blown, and the seed suction holes are easily blocked by small debris in the seeds; in addition, the seed metering device only has a single row of seed suction holes on the seed suction plate, the number of seed suction holes is large, and the distance between each other is narrow. It is used for precision drilling operations with small particle spacing between seeds, and is not suitable for the adsorption of multiple seeds and the sowing requirements of precision and small number of seeds

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