A self-clearing air-suction precision seed metering device

Abstract

The invention discloses a driving and self-clearing air-suction precision seed metering device, which relates to the field of agricultural machinery. , The innovative design of the seed cleaning mechanism mainly includes the seed meter housing, the seed metering disc, the seed protection device and the shaft. Among them: the outer circumference of the seeding disc is evenly equipped with a curved seed guide track and a special-shaped groove, and the special-shaped groove is composed of a "V"-shaped boss, an "S"-shaped self-clearing protrusion and a hole; when picking seeds, the The above-mentioned curved seed guiding track can drive the seeds to actively move along the curved direction of the track, and fill them into the special-shaped grooves in an orderly arrangement. The center of gravity moves forward and falls back to the seed room under the action of gravity to realize self-clearing seeds. The invention can effectively adapt to the external dimensions of seeds, reduce the reseeding and missed sowing index, negative pressure energy consumption and seed damage index, and improve the seed filling performance and the qualified index of single seed precision sowing of the seed metering device.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, and in particular relates to a self-clearing air-suction type precision seed metering device suitable for large and medium-sized seeds such as peanuts, cotton, corn, soybeans, etc. Background technique [0002] Precision seeding technology can separate a precise number of seeds from the seed box and plant them into the soil according to specific plant spacing and row spacing. It has become the main way to plant peanuts, cotton and other crops. The precision seed meter is a key component to realize the precision seeding technology, and good working performance is the premise to ensure the working quality of the seeder. The existing seed metering devices are mainly divided into two categories: mechanical type and pneumatic type. Mechanical seed metering has high requirements on the shape of the seeds, it is difficult to control the number of seeds filled each time, and it is easy to cause mec...

AI Technical Summary

Problems solved by technology

Mechanical seeding has high requirements on the shape of seeds, it is difficult to control the number of seeds filled each time, and it is easy to cause mechanical damage to seeds; pneumatic seeding has problems such as high fan energy consumption, high reseeding rate and missed seeding rate

Moreover, the current seed cleaning device of the precision seed metering device is mainly based on the scraping type and the brush to clear the seeds, which may easily cause mechanical damage to the seeds, affect the germination rate of the seeds, and have poor safety, and the brushes are frequently replaced, making it difficult to It is suitable for seed cleaning of peanuts and other seeds with thin and easily damaged seed coats

[0003] For the mechanical seed metering device, the shape and size of the seeds are high, and the filling accuracy is low. The air suction seed metering device sows large, medium-sized seeds with low adsorption rate, high reseeding and missed seeding rates, and high fan energy consumption. , the clearing device is easy to cause mechanical damage to the seeds, and the safety is poor. A self-clearing gas based on the principle of "mechanical seed disturbance + driving auxiliary seed filling + cooperative seed carrying + self-weight clearing" was invented. The suction precision seed metering device can effectively adapt to the shape and size of the seeds, reduce the reseeding, missed sowing index, negative pressure energy consumption and seed damage index, improve the filling performance and the qualified index of single seed precision sowing of the seed metering device, and realize the accuracy of crops. Increasing production and income is of great significance to the development of my country's agricultural modernization

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