A pneumatic slideway seed metering device

Abstract

The invention relates to a pneumatic slideway seed metering device, which belongs to the technical field of agricultural machinery. The pneumatic type and the mechanical type are combined to realize mechanical seed picking and cooperative seed carrying. A pneumatic slideway seed metering device is composed of a seed metering device housing, a seed chamber, a seed metering disc, an air cut-off block, and a hollow shaft. Among them, there are evenly distributed slideway grooves with the same number as the number of duckbills on the seeding tray, and the end of the slideway is provided with a hole connected to the negative pressure chamber. When picking seeds, "2~3" seeds rely on their own gravity and the pressing force between seeds to enter the groove of the slideway, and the groove of the slideway completes self-clearing with the rotation of the seeding disc. When reaching a certain angle, the negative pressure of the mold hole disappears. The seeds are cast under the action of their own gravity. The invention can effectively adapt to the shape and size of the seeds, improve the seed filling efficiency, reduce the missed sowing rate, improve the sowing qualified rate of the seed metering device, and meet the requirement of precision sowing.

Description

technical field [0001] The invention relates to a seed metering device, in particular to a pneumatic slideway seed metering device for medium-sized seeds such as peanuts, soybeans and cotton, belonging to the field of agricultural mechanization engineering. Background technique [0002] Precision seeding has the advantages of saving seeds and reducing thinning operations. As the main method of planting peanuts, cotton and other crops, mechanized precision seeding has been widely used. The seed meter is the core component of the precision seeding technology, and its working performance directly affects the quality of the seeding. The seed metering device is mainly divided into two categories: mechanical seed metering device and pneumatic seed metering device. Due to the design and use conditions of the seed metering device, the two types of seed metering devices will have different degrees of missed seeding problems. [0003] In view of the high requirements for the shape an...

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Problems solved by technology

[0003] Aiming at the high requirements of the mechanical seed metering device on the shape and size of the seeds, and the phenomenon of missing seeding, and the low adsorption rate of the medium and large particle size seeds of the pneumatic seed metering device, and the high requirements on the fan, the invention of the Combining the pneumatic type with the mechanical type, it is a kind of pneumatic slideway seed metering device that realizes mechanical seed picking and cooperative seed carrying. It adopts the idea of ​​"take three and keep one" to realize orderly filling of seeds, reduce leakage filling rate, and improve seeding efficiency. It is of great significance to the development of my country's agricultural modernization to realize the increase of crop income and production

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