Belt type precise seed-metering device

Abstract

The invention provides a belt type precise seeding-metering device which comprises a seed taking device, a seed cleaning hairbrush, a driving belt wheel, a sealing hairbrush, a seed guiding pipe and a seed box. The device is characterized in that a partition plate is added, and the seed box is longitudinally spaced into a large seed box and a small seed box which are communicated through lower parts; the bottom of the small seed box is provided with a rectangular opening, and the sealing hairbrush is horizontally blocked on the rectangular opening; the rear wall of the small seed box, away from the large seed box, is an inclined plane, and the bottom of the rear wall is upwards provided with a long and narrow rectangular opening; the seed taking device is positioned on the rear part of the small seed box and comprises a driving wheel, a driven wheel and a flat belt with a seed taking scoop; the axial line of the driven wheel is parallel and level to the bottom of the small seed box, and the flat belt is blocked on the long and narrow rectangular opening and in tangential contact with the sealing hairbrush; the highest operation position of the seed taking scoop is lower than the upper end of the long and narrow rectangular opening; the seed cleaning hairbrush is cylindrical and positioned in the small seed box, and the excircle surface of the seed cleaning hairbrush is tangential with the flat belt; and an opening of the seed guiding pipe is positioned right below the seed taking scoop when the seed taking scoop turns. The device has high sowing precision, less breakage and convenient seed filling.

Description

technical field [0001] The invention relates to a belt-type precision seed metering device, which belongs to the technical field of seeding agricultural machinery. Background technique [0002] With the development of modern agriculture, the requirements of agronomy for sowing are getting higher and higher, and the seed meter is required to distribute the seeds of the crops according to the requirements of agronomy to achieve precise, precise, accurate and reasonable distribution, for the sturdy growth of crops and field management, Lay a good foundation. The currently used patent 200820013645.9 mechanical precision seed metering device (there are many similar structures, such as) adopts evenly distributed through holes around the seed metering plate, and a scoop body is provided on one side of the through hole, which can put the seeds The seeds of the box are scooped up and introduced into the through holes, and enter the seed guide tube through the outside of the seed tra...

AI Technical Summary

Problems solved by technology

And the patent 200820013645.9 mechanical type precision metering device that adopts at present, (also have a lot of structures similar to it as) adopts the through hole that evenly distributes around the seeding disc, and one side of the through hole is provided with a scoop body, can put the seed The seeds in the box are scooped up and introduced into the through hole, and enter the seed guide tube through the outside of the seed disc to achieve the technical requirements of precision sowing; the seed metering device adopts a disc structure, so it has a high single-seed seeding rate and low seeding rate for low-speed sowing. The breakage rate is small, but for high-speed sowing, the seeds will fall out of the seed spoon under the action of centrifugal force, resulting in an increase in the void rate; The technical requirements for single-seed sowing cannot be guaranteed; the other is the utility model patent 92212110.9--belt-type seed metering device for planters, which uses a hole-shaped belt-type seed metering device, that is, holes are made on the flat belt according to the size of the seeds. Complete hole punching at the position of the seed box, clear the seeds during the conveying process, and then send the seeds to the seed tube under the clamping action of the double flat belt to realize precision sowing

Because the seed metering device adopts the hole method to control the single seed rate, it is difficult to ensure the single seed accuracy requirement when the seed size is not uniform; in addition, the automatic seed cleaning method is used for seed cleaning, so it is easy for the seeds to appear when the belt speed is high. Shake out of the type hole, resulting in the appearance of the cavity; in addition, due to the use of double flat belt clamping method, the structure of the seed meter is more complicated

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