Air-aspiration type disseminator with circumferential holes

Abstract

The invention relates to an air-aspiration type disseminator with circumferential holes, and relates to the technical fields of seeding machines and seeding units. The air-aspiration type disseminator with the circumferential holes comprises a seeding wheel which is assembled on a central spindle, a row of seeding holes are formed on the external circumference of the seeding wheel, and are communicated with the inner cavity of the seeding wheel through air passages, the inner cavity of the seeding wheel forms a negative pressure chamber, and the negative pressure chamber is communicated with a negative pressure pipeline; a fixed air cut valve which can seal the seeding holes to seed is also arranged in the inner cavity of the seeding wheel; and the external circumference of the seeding wheel is matched and communicated with a seed box. The air-aspiration type disseminator has a simple structure and good reliability, not only can ensure reliable and sufficient seed sucking, quick and reliable seeding and no damaged seeds and seed blockage, but also can prevent missed seeding due to blocked air holes, and an air chamber has good sealing performance and smaller frictional resistance, so the disseminator is low in energy consumption; and the planting and spacing of crops are ensured, thinning is not required during the later period, so the labor intensity is reduced, the effects of protecting seedlings, cultivating strong seedlings and increasing yield and gains are realized.

Description

technical field [0001] The invention relates to the technical field of seed meters for seeders. Background technique [0002] The seed meter is a key part of the seeder, and its working performance directly affects the working quality of the entire seeder. At present, the development of seed metering devices for small-grained and fragile crops such as millet is still at a relatively low level in China. Due to problems such as the structure and material of the seed metering device during the seed metering process, it is easy to cause incomplete seed filling, incomplete seed metering, and seed metering. problems such as blockage of the device or crushed seeds, which cannot better meet the technical requirements for precision sowing of small-grain crops; in addition, domestic air-suction seed metering devices mostly adopt the air-suction disc structure, which has poor sealing effect and is easy to Blockage makes it difficult to sow small seeds. Contents of the invention [...

AI Technical Summary

Problems solved by technology

[0003] The technical problem solved by the present invention is to reduce the problem of seed damage and clogging, realize uniform sowing, and reduce the pressure of seedlings in the later period. It is a kind of air-suction seed metering device, which has a simple structure and good reliability. The seeds are reliable and sufficient, the seeds are fast and reliable, and the seeds are not damaged or blocked. At the same time, it also avoids the leakage of seeding caused by the blockage of the pores. The air chamber is well sealed, the frictional resistance is small, and the energy consumption of the seed meter is low; Planting and planting, no need for seedling thinning in the later stage, reducing labor intensity, achieving the effect of maintaining seedlings and strengthening seedlings, increasing production and gaining;

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