Grain winnowing machine

Abstract

The invention discloses a grain winnowing machine which comprises a vertical winnowing box body and an air blower. A feeding hopper is arranged at the top of the winnowing box body, discharging ports are formed in the bottom of the winnowing box body, at least one rebounding screening device is arranged at the position, close to the top of the winnowing box body, of the inner surface of the winnowing box body, the rebounding screening devices mainly comprise springs arranged at intervals, and multiple exhaust pipes are arranged at the position, located above the rebounding screening devices, on the inner surface of the winnowing box body. Grains are input into the winnowing box body from the feeding hopper, fall on the rebounding screening devices and are bounced under the action of the springs, grain husks and grain husks adhering to the surfaces of the grains fall off along with impact force of contact with the springs, the air blower cooperates with an exhaust fan connected to the exteriors of the exhaust pipes, the grain husks and grain hulls are extracted out, and the aims of effectively treating empty hulls, the grain husks adhering to the surfaces of the grains and grain husks mixed in the grains can be achieved.

Description

technical field [0001] The invention relates to the field of grain processing equipment, in particular to a grain winnowing machine. Background technique [0002] Grain winnowing machine is a device used to separate lighter impurities in grains from grains. Its principle is that according to the principle of aerodynamics, according to the difference in density of light and heavy materials, the lighter impurities are blown out from the impurity outlet by the fan, while the lighter impurities are blown out from the impurity outlet by the fan. The heavy finished grain falls under gravity, separating the grain from impurities. [0003] Although the currently used grain winnowing machine has many functions, so it can make multiple screenings, the structure is complicated and the effect is not good. For this reason, the present invention simplifies the existing winnowing machine, makes its function single, and can Effectively process and screen the empty shells in the grain, the ...

AI Technical Summary

Problems solved by technology

[0003] Although the currently used grain winnowing machine has many functions, so it can make multiple screenings, the structure is complicated and the effect is not good. For this reason, the present invention simplifies the existing winnowing machine, makes its function single, and can Effectively screen the empty husks in the grain, the husks adhering to the surface of the grains and the husks mixed in the grains

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