A kind of near-spherical seed single-grain precision metering device

Abstract

The invention provides a subsphaeroidal seed single-grain precision seed-metering device. The subsphaeroidal seed single-grain precision seed-metering device is composed of a compensation device, a seed separating device, a seed metering wheel, a seed discharging pipe, a main seed loading pipe, a power input shaft, and a housing; wheel blades are distributed on the periphery wall of the seed metering wheel; the wheel blades are provided with holes used for accommodating seeds; the lower part of each hole is provided with a light-emitting device; the main seed loading pipe is provided with an opening upward, the lower part pipe wall of the main seed loading pipe is connected with the lower part of the housing; the seed discharging pipe is communicated with the bottom of the housing; the seed separating device is arranged on the inner side pipe wall of the main seed loading pipe; a lower end outlet of the seed separating device is connected with the housing via a lower end seed outlet; the compensation device is arranged on the outer side of the main seed loading pipe; a light dependent resistor in the compensation device is arranged on a light receiving hole of the housing; a magnetic valve in the compensation device is arranged on the lower end seed outlet of the seed separating device; the compensation device matches the light-emitting devices; and the lower end seed outlet of the seed separating device is controlled to be opened or closed. The subsphaeroidal seed single-grain precision seed-metering device is capable of realizing single-grain precision sowing of subsphaeroidal seeds such as soybean at low planting hole empty rate, high single grain rate, and low seed damage rate.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery and is suitable for a seed metering device for a class of near-spherical seeds similar in shape to soybean seeds, in particular to a single-grain precision seed metering device for near-spherical seeds. Background technique [0002] At present, the commonly used soybean seed metering devices mainly include air suction vibration type, hole wheel type, electromagnetic vibration type and other seed metering devices. Among them, the filling angle of the hole wheel type seed meter is a specific value, so the designer often increases the radius of the seed metering wheel to ensure the accuracy of seed filling, which results in a larger structure of the seed meter. In addition, the type The hole-type seed meter often relies on the brush wheel or the scraper to remove the excess seeds in the hole. When the hole filled with seeds passes through the brush wheel or the scraper, when the brush ...

AI Technical Summary

Problems solved by technology

The key to the successful production of the single-seed precision seeding technology is to ensure a high single-seed rate and a small void rate. Increase, when multiple grains enter at the same time, it will also lead to the occurrence of clogged holes, thereby increasing the void rate, which is why the single grain precision seeding technology has not been effectively promoted in the modern agricultural production process

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