Pneumatic centralized seed metering device

Abstract

The invention discloses a pneumatic centralized seed metering device, and is aimed at providing a pneumatic centralized seed metering device which is convenient for maintenance and adjustment, has a simple structure, and saves space of a seed case. The device comprises a lower housing, and a negative pressure seed-sucking system mounted on a pedestal of the lower housing; a seed metering wheel ismounted on the pedestal of the lower housing and is supported to rotate horizontally; an upper housing is disposed above the lower housing; a seed-dropping cone is fixedly mounted on the upper housing; a seed-guiding cone is mounted on a seed metering wheel below the seed-dropping cone; the seed-dropping cone and the seed-guiding cone are arranged with equal upper and lower intervals to form a seed-guiding cavity; each seed-separating port is communicated with the seed-guiding cavity; a seed-filling chamber is disposed corresponding to each seed-separating port; the seed-filling chamber is clampedly fixed between an intermediate seed-separating body and the lower housing; a positive pressure hole on each intermediate seed-separating body is communicated with a positive pressure system disposed on the upper housing respectively. The invention is applicable to precision sowing operation of large-scale seeders.

Description

technical field [0001] The invention belongs to the sowing machinery in the technical field of agricultural machinery, in particular to a pneumatic centralized seed metering device. Background technique [0002] With the development of modern large-scale agriculture, in recent years, large-scale seeders can achieve wide-width, high-efficiency, and precise sowing operations, and have been successfully applied. The large-scale seeder realizes wide-width multi-row sowing, and the centralized seed meter that meets the performance design requirements of the large-scale seeder is the main key component. At home and abroad, a relatively excellent solution has been designed for the centralized seed metering device that meets the design performance requirements of large-scale seeders. For example, a known pneumatic centralized seed metering device is to set the centralized seed metering device In the volumetric seed box, a pneumatic swirl seed delivery device is installed above the ...

AI Technical Summary

Problems solved by technology

However, there are still shortcomings: since the centralized seed metering device is set in a large-volume seed box, and a pneumatic swirling seed delivery device is installed above the centralized seed metering device, it occupies the effective space of the large-volume seed box and is not convenient for centralized seeding. The maintenance and adjustment of the seeder also increases the complexity of the structure

Images