Air-assisted rice broadcast sower

Abstract

The invention relates to an air-assisted rice broadcast sower, which comprises a seeding system, an air conveying system and a seed case, wherein the seeding system comprises an outer groove wheel, a sleeve, an outer groove wheel shaft, a stirring shaft, a big gear wheel, a small gear wheel, a small baffle, a seed collector and a seeding pipe; the diameter of the outer groove wheel is 100mm; outer groove wheel grooves are uniformly arranged in the surface of the outer groove wheel along the axial direction; the cross section of each outer groove wheel groove is in a circular arc shape with the circular arc radius being 6.5mm; the air conveying system comprises a fan and an air conveying pipe. According to the air-assisted rice broadcast sower, the diameter of the outer groove wheel is large, and the volume of each outer groove wheel groove is large, so that large-width rice seed sowing can be met; a pleated pipe is adopted in the middle of the air conveying pipe, so that the functions of pressurization and uniform seed mixing can be realized; a nozzle adopts a flat-shaped sector structure with a tapered uniform cross section area, so that the sowing width of the seeds can be increased, and the seeds can be sowed uniformly; not only is the problem of high percent of damaged seed of the traditional outer groove wheel solved, but also the problems that the air-assisted seeding machine is heavy in weight, high in cost and the like are solved, and the operation efficiency is improved.

Description

(1) Technical field [0001] The invention relates to an air-driven rice spreader, in particular to a suspended dryland rice spreader. (2) Background technology [0002] Rice is one of the most important food crops in my country. The total rice output is nearly 200 million tons, accounting for 40% of the country's total grain output and 35% of the world's total rice output. The average yield of rice is 6.21 tons / ha, nearly 60% of my country's The staple food of Chinese people is rice, which directly consumes 130 million to 140 million tons of rice every year. In order to meet the requirements of rice planting, it is an urgent requirement for farmers to study seeders suitable for rice agronomic characteristics, and it is also an effective way to promote agricultural mechanization of rice production. [0003] Most of the existing rice direct seeding machines in my country use external grooved wheel seed metering devices, which have the advantages of simple structure, relatively ...

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides an air-fed rice spreader, which not only overcomes the problem of high seed damage rate of the traditional outer grooved wheel, but also solves the problem of the existing air-fed seed metering machine with heavy weight, Problems such as high cost, improve operating efficiency, and have a good application market

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