A kind of double cavity mechanical seed metering device

Abstract

The invention discloses a mechanical type dual-cavity seeding apparatus. Two cavities are bilaterally symmetric. The mechanical type dual-cavity seeding apparatus comprises a seed box, shells, a seed feeding pipe, a seed charging nozzle, a left overturning type seed discharging cover, a right overturning type seed discharging cover, a left seed separating hairbrush, a right seed separating hairbrush, a seed discharging disc and a seed discharging shaft. A groove of the seed discharging disc, wall surfaces of the left shell and the right shell, the left seed separating hairbrush and the right seed separating hairbrush form a left seed filling cavity and a right seed filling cavity which are communicated with the seed feeding pipe, holes are formed in disc surfaces of two sides of the seed discharging disc, a left arc-shaped seed removing and protecting plate and a right arc-shaped seed removing and protecting plate as well as the left seed separating hairbrush and the right seed separating hairbrush are arranged on the inner sides of the left shell and the right shell, the left seed separating hairbrush and the right seed separating hairbrush prevent seeds from directly entering the seed charging nozzle from the left seed filling cavity and the right seed filling cavity, an upper end opening of the seed charging nozzle is aligned to the holes in the seed discharging disc, and seeds are filled in the holes along with the rotation of the seed discharging disc in a seed filling region, and then enter a seed removing region and a seed protecting region to complete seed removing and seed protecting, and finally enter a seed charging region to complete seed filling. The mechanical type dual-cavity seeding apparatus is novel in structure; by adopting a manner of filling the seeds, protecting the seeds and discharging seeds on the side edge of a dual-cavity vertical disc, the mechanical type dual-cavity seeding apparatus is compact in structure, capable of achieving precise and less hole sowing, and adjustable in row spacing.

Description

technical field [0001] The invention relates to the technical field of sowing machinery in agricultural machinery, in particular to a double-cavity mechanical seed metering device, which is suitable for precision sowing of approximately round seeds such as cotton, beans, corn, or irregularly shaped seeds such as rice and wheat . Background technique [0002] The seed meter is the core component of the seeder, and its working quality directly affects the overall performance of the seeder. Existing seed metering devices can be mainly divided into two categories: mechanical type and pneumatic type. Pneumatic seed metering devices have no strict requirements on seed size and shape, strong adaptability, and little damage to seeds, but the structure is complex; mechanical seed metering devices have strict requirements on seed size, low seed metering accuracy, and serious damage to seeds. It is difficult to achieve high-speed operation, but the structure is simple, the manufactur...

AI Technical Summary

Problems solved by technology

At present, most of the mechanical seed metering devices use hole-shaped wheels, which have good adaptability to nearly round seeds such as corn and soybeans, but are less effective for irregular seeds such as rice and wheat, mainly reflected in filling and protecting seeds. , Seed clearing and other processes are difficult, and the rate of seed injury is high

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