Plot seed threshing machine

Abstract

The invention relates to the technical field of agricultural machinery and particularly discloses a plot seed threshing machine. The machine mainly comprises a vertical type fruit ear threshing system, a fan, a motor, a vibrating screen, a sorting fan and the like, wherein fruit ears, such as soybeans and the like, enter into a threshing chamber through a feeding port; a vertical type cylindrical concave plate and a spindle with spiral nail teeth are arranged in the threshing chamber; a spiral blade is arranged under the spindle; a high-speed rotating impurity-sucking fan is arranged above the spindle; when the spindle rotates at an intermediate speed, grains are separated by the cylindrical concave plate under the action of centrifugal force and under the rubbing action of the nail teeth and the cylindrical concave plate; stalks and big broken straws enter into a sorting system; chaffs and a majority of straws are discharged from a straw outlet, under the action of the spiral blade and speedily rotating fan; the grains and big broken fruit ears fall into a vibrating sorting screen; the broken fruit ears in the grains are filtered through grids; and the seeds fall into a seed receiving bucket while the broken fruit ears and straws are discharged from the straw outlet. By using the plot seed threshing machine, the residual quantity in the machine is almost zero and the time for cleaning the machine is shorter.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a plot seed thresher, which is mainly suitable for plot experiments on soybean crops in agricultural research, a threshing and cleaning machine for super original seed breeding and small-area propagation. Background technique [0002] At present, most domestic or foreign seed threshers in similar communities adopt a horizontal threshing structure, and the concave screen has a small wrap angle, generally around 180 degrees. As a result, the threshed grains cannot be sieved by the concave plate in time, and are repeatedly hit by the high-speed threshing teeth in the threshing chamber and suffer losses. However, the structure of the horizontal threshing machine requires that the threshing chamber must be opened when the machine is cleaned, which cannot ensure that the varieties are not mixed when the varieties are changed frequently. Contents of the invention [00...

AI Technical Summary

Problems solved by technology

As a result, the threshed grains cannot be sieved by the concave plate in time, and they are hit by the high-speed threshing teeth many times in the threshing chamber and suffer losses.

However, due to the structure of the horizontal thresher, the threshing chamber must be opened when the machine is cleaned, and it is impossible to ensure that the varieties are not mixed when the varieties are changed frequently. The cleaning is complicated and time-consuming, which will affect the accuracy and efficiency of the experiment

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