Three-stage color selection system

Abstract

The present invention relates to a three-stage color selection system that selects, consecutively in three stages (three steps), leaf products having low weight and wide variation in size and color, such as green tea, red tea, chrysanthemum, and herbs, and thus can ensure high productivity and very efficient color selection, and yield leaf products of high quality (high grade) without damaging (spoiling) the leaf products. The present invention uses a single chip-type full color LED having three primary color LEDs of red, green, and blue combined into one to produce light at the color and brightness of the leaf products to be selected in order to more effectively (efficiently) screen for and remove colored products other than leaf products, for example, glass or synthetic resin, as well as leaves which are partially rotted or discolored.

Description

technical field [0001] The present invention relates to a three-stage color screening system. Specifically, the present invention uses three steps (three stages) to select leaf-shaped items such as green tea, black tea, chrysanthemum, and mint (hereinafter referred to as "leaves") with small density and large changes in size and color. continuous screening, not only high productivity, can realize very effective color screening, but also can obtain high-quality (advanced) leaves without damaging (injury) leaves. Background technique [0002] Generally speaking, the color screening device is a kind of foreign matter contained in rice, brown rice, glutinous rice, black rice, yellow millet, barley, wheat, soybean and other grains, such as bad grains, bran, burnt particles, grass seeds, etc. RPC (Rice Processing Complex) equipment for discriminating and separating grains, hay, colored particles, sand, synthetic resin or glass, etc., uses a CCD camera to take pictures of grains (o...

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Problems solved by technology

[0005] In addition, considering the characteristics of the leaves, a "leaf color screening machine" that can screen good and bad products of the leaves has been proposed. Stage screening structure, so not only poor productivity and low screening efficiency, but also in order to obtain good-quality leaves, leaves after one screening need to be put into the leaf color screening machine for repeated screening, not only low productivity , it is also necessary for the transfer equipment to put the once-screened leaves into the color screening machine for screening. During the repeated transfer (putting) and color screening process with the transfer equipment, the original shape of the leaves is damaged or damaged. Many, so the overall quality is greatly reduced

[0006] In addition, since a monochromatic white light source is used for the light source, it is not easy to distinguish defective leaves of the same or similar color as the leaves from bran, burnt particles, grass seeds, dead grass, colored particles, sand, synthetic resin, or glass Such as foreign matter, not only causes the color screening ability to decline, accurate screening cannot be performed, but also it is difficult to adjust the amount of light according to the state or type of leaves, so we can only use an additional reflector to adjust the reflection angle of the light source or adjust the light amount or brightness. (illuminance), so dimming efficiency is low

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