Air-aspiration type hole sowing roller device

Abstract

The invention relates to an agricultural sowing machine, in particular to a roller device used for an air-aspiration type film coating hole sowing machine. The device of the invention mainly comprises a hole sowing roller, duckbill nozzles, a film pressing wheel and an air-aspiration type divider, wherein the air-aspiration type divider 3 is arranged in the hole sowing roller; the main shaft of the hole sowing roller is connected with the main shaft of the air-aspiration type divider through a gear or a chain; a groove-shaped seed conveying channel is arranged at the inner side of the outer ring of the roller along the circumferential direction; the groove-shaped seed conveying channel is fixedly connected with the hole sowing roller 1; and a seed barn is arranged at the seed inlet of each duckbill nozzle. The device of the invention enables seeds to enter each seed barn to move from each seed inlet along the cambered groove-shaped seed conveying channel, so that the seeds are conveyed into a hole sowing nozzle after the seeds turns a around in the roller to prevent the seeds from bouncing out easily in the process of entering each duckbill nozzle, thereby reducing the void content of hole sowing. In addition, each seed barn has the advantages of simple structure and easy installation and can conveniently realize the purpose of planting different crops according to different planting distance requirements. The invention also has the advantage that the groove-shaped seed conveying channel has an effect on enhancing the strength of the roller.

Description

technical field [0001] The invention relates to an agricultural seeder, in particular to a roller device used on an air-suction film-laying hole seeder. Background technique [0002] Chinese patent literature disclosed a kind of air-suction type sowing film spreading device on June 17, 1998. The publication number is CN2283960. Integrated, the drum cavity is equipped with a precise seed-taking device, which includes: a seed chamber, a seed sucker and a vacuum chamber, the seed sucker, the drum and the film pressing wheel are installed on the drum shaft, and the periphery of the seed sucker is equipped with Equidistant seed suction holes, an inoculation hopper is provided on the inner circumference of the drum, a duckbill hole sower corresponding to the inoculation hopper is installed on the outer circumference of the drum, and a plastic film is installed under the drum and the pressure film wheel. The first defect of this device is that the seeds rely on gravity to drop dir...

AI Technical Summary

Problems solved by technology

The first defect of this device is that the seeds rely on gravity to drop directly into the duck's mouth from the seed tray through the inoculation bucket. In actual work, especially when the drum speed is slightly increased, it is difficult for the seeds to fall into the duck's mouth; There is no deceleration between the transmission of the main shaft of the drum and the main shaft of the air-suction distributor, it is impossible to perform the task of sowing, so the design of the described device is substantially flawed

But the disadvantage is that the structure of the seed transfer box is relatively complicated, especially when sowing seeds with different plant spacings, it is not very convenient to adjust

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