Oblique winnowing device of reaping machine

Abstract

The invention aims to provide an oblique winnowing device of a reaping machine. The oblique winnowing device comprises a seed dropping port. A downwardly-oblique dispersing and sliding plate is arranged below the seed dropping port. An air suction port is arranged along the lower side below the dispersing and sliding plate. The air suction port is connected with an air pipe with an upwardly-oblique bottom plate. By arranging the dispersing and sliding plate below the seed dropping port, the oblique winnowing device fully disperses grains during the dropping; by arranging the air suction port below the dispersing and sliding plate, the oblique winnowing device achieves concentrative wind amount, high wind speed and strong suction force; and by connecting the air suction port with the air pipe with the upwardly-oblique bottom plate, the oblique winnowing device not only can ensure that impurities are completely sucked away and separated, but does not lose the seeds, thus realizing seed purification with high efficiency and low loss.

Description

technical field [0001] The invention relates to a harvester, in particular to a winnowing device for the harvester. Background technique [0002] The winnowing device is an important part of the harvester, such as the technical solution disclosed in Chinese patent 200720078504.0, the bottom of the threshing bin is provided with a grain receiving trough with a circular arc in cross section and a matching grain conveying auger, and the rotating shaft of the grain conveying auger One end of the machine is connected with the power, and after the sieved grains fall into the grain receiving groove, the grains are pushed horizontally to the grain outlet by the transporting auger and fall freely. Select the agency suction duct to exclude. In this technical scheme, the winnowing area is set in the falling area of ​​the grain, and the air suction device set on the top is used for vertical suction, the loss of the grain is small, and the separation efficiency is improved, but the tech...

AI Technical Summary

Problems solved by technology

In this technical scheme, the winnowing area is set in the falling area of ​​the grain, and the air suction device set on the top is used for vertical suction, the loss of the grain is small, and the separation efficiency is improved, but the technical effect is still unsatisfactory, mainly because of two First, the grains and impurities are not fully dispersed during the falling process, and the impurities cannot be fully removed under the obstruction of the grains; second, the wind selection area has a large cross-section and low wind speed, especially for the separation of heavy stem impurities. Difficult, and to increase the wind speed requires a more powerful fan, which will have an adverse effect on the overall performance of the harvester

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