Positive-negative air pressure combined duck-billed precise hill-drop planter

Abstract

The invention discloses a positive-negative air pressure combined duck-billed precise hill-drop planter. The positive-negative air pressure combined duck-billed precise hill-drop planter comprises a fixing shaft, an air chamber cavity, a seed metering wheel, a hill-drop turntable, a seed filling chamber cavity and a seed guiding groove, wherein the air chamber cavity is inserted into one end of the fixing shaft and installed on the fixing shaft, the seed metering wheel is inserted into the other end of the fixing shaft and installed on the fixing shaft, and the hill-drop turntable is connectedto the seed metering wheel; and the seed filling chamber cavity and the seed guiding groove are mounted on the circumference of the air chamber cavity. The seed metering principles of negative-pressure seed suction and positive-pressure seed blowing are combined with the principle of duck-billed hole formation, the hill-drop planter has a simple structure and reliable operation, precise hole sowing of seeds of small particle size is realized, the seeding precision is high, seed jamming and damage to seeds are reduced, little damage is caused to the seeds, the seeds are saved, and membrane punching, seed sucking and seed metering can be completed at a time; and the hill-drop planter has high sowing efficiency, low work intensity and convenient operation, and time and labor can be saved.

Description

technical field [0001] The invention belongs to the technical field of agricultural seeding machinery, and in particular relates to a duckbill type precision hole seeder with a combination of positive and negative air pressure. Background technique [0002] There are mainly two types of film-covered seeders. One is to sow seeds first and then spread the film under the film, and the other is to lay the film first, punch holes in the seed bed after the film is laid, and then punch holes in the film. Hole seeding work. [0003] Hole planting under the film usually needs to manually break the membrane of the seedlings after emergence, the process is complex and labor-intensive. For example, the Chinese patent application number 20181120763.1 has released a synchronous punching device on the film for the hole planting operation under the film. During the post-laying operation, the mulch to be laid is pierced through the punching cone nails. Due to a certain error in the position...

AI Technical Summary

Problems solved by technology

[0003] Hole planting under the film usually needs to manually break the membrane of the seedlings after emergence, the process is complex and labor-intensive. For example, the Chinese patent application number 20181120763.1 has released a synchronous punching device on the film for the hole planting operation under the film. During the post-laying operation, the mulch to be laid is pierced by the punching cone nail. Due to a certain error in the seeding position of the seeds, the synchronization between the seed hole and the hole punched on the mulch cannot be accurately guaranteed.

[0004] The hole seeders for hole-seeding operations on the film generally adopt the structure of mechanical seeding, mainly to realize the film-covered sowing of large and medium-sized seeds such as corn, cotton, and peanuts, but for small-sized seeds such as rapeseed, radish, and cabbage. Not applicable, the applicability is poor, and it is difficult to seed with a hole seeder. Due to the small size of the small-sized seeds, during the sowing process, it is easy to cause jamming and damage to the seeds, the seeds are easily broken, and the sowing accuracy is low. For example, the application number is 201510775511.5 The Chinese patent has released a rapeseed row precision hole sowing machine suitable for film-filmed rape sowing and film-filmed corn interplanting rapeseed. The seeds pass through the seeding tube and the seed guide plate in turn, and finally enter the duckbill-shaped caving device. When the caving device cuts the mulch to form a hole, the caving device opens under the compression of the spring, and the rapeseed falls into the hole. After the sowing operation is completed, the original seed metering device of the hole seeder adopts the hole wheel type seed metering device, which is easy to damage the rapeseed during the operation, the rate of damage to the seed is high, and the accuracy of single seed selection cannot be controlled

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