Variable-suction-hole dual-disc air-aspiration type precise seeding device

Abstract

The invention discloses a variable-suction-hole dual-disc air-aspiration type precise seeding device. The device comprises a seed conveying pipe, a front panel, a front shell body, an air chamber shell body, a seeding plate and an adjusting plate; the seed conveying pipe is installed on the front panel, and seeds flow into a seed filling chamber along the seed conveying pipe under the gravity effect; the front panel is installed on the front shell body and made from a transparent material through cutting, and the seed filling quality is conveniently observed; the front shell body is provided with a seed partition plate, a seed throwing port and a seed discharging port, the seed partition plate partitions a seed filling area and a seed throwing area, the seed throwing port is connected witha seed guiding pipe, and the seed discharging port is used for removing remaining seeds; a negative pressure area with the three quarter arc surface is arranged on an air chamber shell body; an adjustable-seed-hole dual-disc mechanism comprises the seeding plate, an adjustment plate and an adjustment rod, and seed holes are uniformly formed in the seeding plate and the adjustment plate. The variable-suction-hole dual-disc air-aspiration type precise seeding device adopts the superposition combination principle, is simple in structure, meets the universal seed sowing demands of soybeans and corn, and effectively avoids the situation that a seed suction component is detached and assembled many times, so that gas tightness is influenced.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a variable suction hole double-disc air suction precision seed metering device. Background technique [0002] The seed metering device is the heart of the seeder, and the seeding performance of the seed metering device directly affects the working quality and efficiency of a seeder. The current seed meters are mainly divided into mechanical and pneumatic. The pneumatic seed metering device has become the main means of precision sowing because it does not damage the seeds and has strong adaptability to the shape of different crop seeds. [0003] The precision sowing technology requires that the seed metering device can distribute the seeds in the field according to the certain plant spacing, row spacing and hole number according to the agronomic requirements of the crops. Compared with manual sowing, it reduces the demand for seeds and reduces the cost of purchasing seeds. ...

AI Technical Summary

Problems solved by technology

[0004] The existing pneumatic seed metering device technology is relatively mature, but most of them have single functions. To achieve multi-type crop sowing, it is necessary to disassemble the machine tool and replace the seeding tray; there are also some air suction seed metering devices that control the angle of the scraping blade through the pointer To realize the sowing of seeds of different particle sizes

It is not only cumbersome to disassemble the equipment, but also easy to damage the airtightness of the pneumatic seed metering device; although it is convenient to adapt to different seed sowing by controlling the scraper knife, one of the fundamental factors affecting the seeding performance - the shape of the hole has not changed, so Meter performance degrades when sowing different seeds

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