Multi-level corn kernel screening device

Abstract

The invention provides a multi-level corn kernel screening device which comprises a base, a feeding hopper, a first piston type jacking device, a second piston type jacking device, a first drive mechanism and a screening box. The discharging end of the feeding hopper is provided with a first opening and a second opening. The first opening is provided with a first movable ball. The first piston type jacking device is movably arranged on the screening box to be used for jacking the first movable ball in an intermittent manner. The first piston type jacking device moves in the vertical direction. The second opening is provided with a second movable ball. The second piston type jacking device is movably arranged on the screening box to be used for jacking the second movable ball in an intermittent manner. The second piston type jacking device moves in the vertical direction. A first rotary disc, a first screen plate, a second screen plate and a third screen plate are horizontally arranged in the screening box. The multi-level corn kernel screening device is simple in structure and thorough in screening, the screening process is conducted in a fully-sealed box body, no dust is generated, corn kernels with different satiation degrees can be separated, and labor intensity is low.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a multistage screening device for corn kernels. Background technique [0002] At present, after the corn is harvested and threshed, impurities such as husks and sand grains are often mixed in the corn, which affects the overall quality of the corn. There are usually two kinds of existing screening methods: one is the method of manual screening, which has the disadvantages of high labor intensity, high cost, low work efficiency, and low sieving clarity of corn; the other is the method of using a corn screening machine. The method has the disadvantage of high cost of purchasing the equipment due to the complex structure of the corn screening machine. In addition, due to the large amount of impurities in the corn, a large amount of dust will appear during the screening process, which will affect the health of the operators. Contents of the invention [0003] Based ...

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Problems solved by technology

[0002] At present, after corn is harvested and threshed, impurities such as hulls and sand are often mixed into the corn, which affects the overall quality of the corn.

There are usually two kinds of existing screening methods: one is the method of manual screening, which has the disadvantages of high labor intensity, high cost, low work efficiency, and low sieving clarity of corn; the other is the method of using a corn screening machine. method, this method has the disadvantage of high cost of purchasing the equipment due to the complex structure of the corn screening machine. In addition, due to the large amount of impurities in the corn, a large amount of dust will appear during the screening process, which will affect the health of the operators

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