Double-row-seeding seed-metering device of alfalfa

Abstract

The invention provides a double-row-seeding seed-metering device of alfalfa. In particularly, an elastic material (4) is arranged annularly in an outer shell (2). Meanwhile, a seed guiding wheel (8) and a spoon wheel (6) are arranged on the outer shell (2) in a manner of side-by-side co-axial manner. A seed inlet bucket (1) is arranged above the outer shell (2). Two seed discharge outlets (3) are arranged on the lower parts of two sides of the outer shell (2). A plurality of seed guiding teeth (9) are arranged on the periphery of the seed guiding wheel (8) uniformly. A plurality of inclined teeth (7) are arranged on the periphery of the spoon wheel (6) uniformly. A seed guiding trough (10) is formed in the seed guiding teeth (9), wherein a space (11) is formed at the edge of the seed guiding trough (10). The double-row-seeding seed-metering device is simple in structure, is low in cost, is less in power consumption, is long in service life, is stable in performances, is convenient to maintain and is high in seeding efficiency by a double-row-seeding method with the single seed guiding wheel.

Description

technical field [0001] The invention relates to the field of agricultural seeding machinery, in particular to a double-row sowing and metering device for alfalfa. Background technique [0002] Alfalfa is native to Iran and is the most widely distributed cultivated grass in the world. It has been cultivated in my country for more than 2,000 years. It is the most widely planted grass variety in the country and even in the world. Because of its strong adaptability, high yield, and good quality, it is known as the "King of Grass". The yield of alfalfa varies greatly due to different growth years and natural conditions, and the yield per mu is average in 2-5 years after sowing. In 2000-4000 kg, the yield per mu is more in areas with better hydrothermal conditions. The stems and leaves of alfalfa are tender and delicious. It is a kind of wild vegetable that is popular among people. It not only tastes fresh and tender, but also contains rich protein, minerals, multivitamins and ca...

AI Technical Summary

Problems solved by technology

At present, precision seed metering devices mainly include pneumatic seed metering devices, electromagnetic vibration seed metering devices, mechanical seed metering devices, etc. Pneumatic seed metering devices have good working performance, high price, complex structure, and strict requirements for use and maintenance; electromagnetic vibration seed metering devices The seed meter does not require high seed size, but the uniformity of seeding is not good, and the manufacturing cost is high; moreover, when sowing alfalfa, most of them use external grooved wheel seed metering device, because alfalfa seeds have extremely small size and good fluidity The characteristic is that when the alfalfa seeds are arranged with the outer grooved wheel seeder, there are seeds missing, the grooved wheel grinds the seeds, and the sowing rate is difficult to control. During production, alfalfa is sown by mixing sand, chemical fertilizers and other media in the alfalfa seeds, and there is also a problem of uniform sowing. The problem of poor performance is that the currently commonly used sowing machinery is a single sowing wheel, which can only sow one row of seeds. Therefore, the sowing efficiency is low, and it is not suitable for the contemporary situation of large-scale planting of alfalfa.

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