JP3273171B2 - Method for producing refined wheat consisting of wheat grains without black streaks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing refined wheat which contains almost completely no wheat grains having black streaks attached thereto (the black streaks are almost completely removed).

[0002]

2. Description of the Related Art In conventional pearled wheat (especially pearled pearl barley), even if the grain is temporarily ground and polished, the pearled barley is present in the central part, so that pearled wheat alone or other raw materials, for example, Even if it is cooked or cooked in a mixture with polished rice, it will take on a blackish tinge, and it will not be possible to visually wipe out the feeling of strangeness, which has the disadvantage of impairing the appearance.

[0003] Of course, in the conventional production process of refined barley, there is a case where a means for removing the black streak portion after cutting into two along the black streak line is employed.

[0004]

However, in the above-mentioned prior art, since only means for efficiently grinding the black striations were sought, it was necessary to obtain refined wheat to which the black striations did not adhere completely. However, there is no method than increasing the degree of milling, and the yield is extremely poor. In addition, large grains of white wheat cannot be obtained. Therefore, conventionally, there was no refined wheat in which the black streak was almost completely removed from the wheat grain. By the way, in the conventional wheat grains from which the black streaks have been removed, those having a residual black streaks of 60 to 80%, that is, those having a ratio of wheat grains without black streaks of 20 to 40%, are marketed as good products. I have.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks and to provide a refined barley having almost no black striations.

[0006] That is, using the barley grain cut along the black line after the primary grinding and polishing, as a raw material, the bran layer of the barley, a part of the endosperm part and a part of the black line are ground. Step (A) of removing and polishing, while feeding the wheat grains one by one, irradiating indirect light from the light source to each wheat grain, and adjusting the light amount of the black streak to the light amount of the contour line of the wheat grain and other parts. And (B) a step of detecting the black streak by the CCD image sensor by the comparison. Each wheat grain remaining in the black streak detected and selected in the step (B) is separated by the (B). By repeatedly passing through the steps A) and (B), it is intended to obtain refined wheat which does not contain wheat grains to which black streaks are almost completely adhered (black streaks are removed).

[0007] The invention of the present application is constituted by the following claims. 1) Using wheat grains cut along the black streak after the primary grinding / milling as raw materials, grinding / milling and removing the bran layer of the barley grain, part of the endosperm part, and part of the black streak (A) ) Process, by feeding indirect light from the light source to each wheat grain while feeding the wheat grains one by one, and comparing the light intensity of the black streak with the light intensity of the outline of the wheat grain and other parts, (B) a step of detecting a black streak with a CCD image sensor. Each wheat grain remaining in the black streak detected and sorted in the step (B) is
A method for producing refined barley comprising barley grains without black streaks, wherein the wheat is repeatedly passed through the steps (A) and (B).

The refined barley of the present invention comprising barley without black streaks is produced from barley, naked barley and the like.

[0009] The present invention provides a refined barley comprising barley grains without black stripes, which has not existed as a refined barley conventionally.
In addition, after the secondary grinding / milling process of wheat grains, a process of sorting and removing the remaining wheat grains of the black streaks is incorporated, whereby the wheat grains whose black streaks have not been ground / milled are fed one by one. Meanwhile, an optical sorting process of irradiating wheat grains with indirect light from a light source and comparing the light quantity of the black streak with the light quantity of the contour line of the wheat grain and other parts to detect the black streak with a CCD image sensor. It is sorted and returned to the grinding / milling process.

Therefore, it is possible to reliably detect the black striations, and it is possible to obtain refined wheat consisting of wheat grains almost completely without the black striations. By the way, the ratio of wheat grains without black streaks in the obtained wheat grains from which the black streaks were removed is about 70% or more, and the black streaks that have the black streaks are also very small. It was of such a degree that it could be seen.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a method for producing refined wheat comprising barley grains without black streaks according to the present invention will be described with reference to the flowchart of FIG.

First, wheat grains such as barley and naked barley are primarily ground and polished to such an extent that the outer skin and a part of the bran layer can be removed. Next, the barley grain is cut along the black line, and undergoes a secondary grinding and polishing step of grinding and polishing to the extent that the remaining bran layer, part of the endosperm and part of the black line can be removed. Then, using a conventional color sorter, the colored wheat grains and colored substances are detected in advance. After removing the detected colored barley grains and coloring matter from the line, the black bar line sorter irradiates the barley grains with indirect light from the light source while feeding the barley grains one by one, The black streak is detected by the CCD image sensor by comparing the light intensity of the barley with the light intensity of the outline and other parts of each barley, and the selected barley with the black bar is removed from the line, and then ground again. It is returned to the milling machine, ground and polished, and the barley grains from which the black stripes have been almost completely removed are stored in stockers.

While the barley is being fed one by one, the barley is illuminated with indirect light from a light source while the barley is being fed one by one, and the light quantity of the black bar is determined by the contour line of the barley. By comparing the light intensity of the other parts with the black streak,
The optical sorting step of detecting with the D image sensor will be described with reference to FIG.

In FIG. 2, 1 is an alignment chute,
The wheat grains 11 are supplied one by one at predetermined intervals from a supply chute (not shown) and fed, so that the wheat grains 11 are sequentially dropped at a constant speed.

Reference numeral 2 denotes each barley grain 1 falling from the alignment chute 1
A plurality of light sources installed with one passing line interposed therebetween, such as a halogen lamp, which can obtain strong light are preferably used. The light from the light source 2 is blocked by the shade 3 so that the wheat grains 11 directly falling from the alignment chute 1 are not irradiated. The light from the light source 2 is radiated to the wheat grains 11 from all directions by the top reflector 8, the side reflectors 8 'and the bottom reflector 8 ".
Is evenly irradiated and has almost no shadow.

The wheat grains 11 irradiated with light from the light source 2
Are detected by the CCD image sensor 5. Reference numeral 6 denotes a condenser lens set between the CCD image sensor 5 and each wheat grain 11, and the reflected light picked up by the condenser lens 6 forms an image with the CCD image sensor 5 and floats in the background 4. The image of the rising wheat grain 11 is recognized by the sensor 5.

When the sensor 5 detects the black streak line 12 in the wheat grain 11, the ejector 7 is operated by the signal, and the wheat grain 1 is detected.
The compressed air is blown out at the timing when 1 reaches the vicinity of the outlet of the ejector 7 to blow off the wheat grains 11. The blown wheat grains 11 are sorted as defective products to stockers 15 different from the stockers 14 of the good wheat grains 11.

The mechanism by which the sensor 5 detects the black streak line 12 in the wheat grain 11 detects a change in the amount of light scanned by the scanning line as shown in FIG. That is, as described above, the wheat grains 1 which are uniformly radiated from the light source 2 so as to wrap the indirect light and float in the background 4
Since the image 1 is recognized by the sensor 5, when the black streak line 12 remains in the wheat grain,
The light amount of the portion is much lower than the light amount of the outline 13 portion of the wheat grain 11, and the black streak line 12 can be clearly identified.
On the other hand, in the conventional example, a shadow is formed at the contour 13 along the outer shape of the wheat grain 11, and this shadow is detected as dark as the black streak 12 by the sensor 5, unlike the case where the shadow is seen with the naked eye. Then, the contour line 13 is determined as the black stripe line 12 as shown in FIG.

The difference in light amount between the black stripe 12 and the outline 13 of the wheat grain 11 is set in a predetermined range in advance, stored as data in the processor, and compared with the data detected by the sensor 5. Then, it may be determined whether or not the black streak line 12 remains.

As shown in the flow chart of FIG. 1, refined wheat from which black striations have been removed to the extent of conventional products in advance by a conventional grinding / milling machine and optical sorting machine, and then the present invention When the sorting process used in the above is combined, refined wheat without black streaks can be obtained more quickly.

The milled barley obtained as described above has almost the same appearance as milled rice, and it is possible to provide milled barley that has no unpleasant sensation even when mixed with milled rice.

[0022]

According to the present invention, the refined barley comprising barley grains without black streaks and the method for producing the same are obtained from wheat which is almost completely absent from black streaks which cannot be obtained as a conventional barley having black bars removed. It aims at providing refined wheat consisting of grains.

Then, after a secondary grinding / milling step of the wheat grains cut along the black stripes, the wheat grains are irradiated with indirect light from a light source, and the light intensity of the black stripes is reduced by the contour line of the wheat grains and the like. A step of sorting out the remaining wheat grains of the black streak by detecting the black streaks with the CCD image sensor by comparing with the light amount of the portion is incorporated. This is to return to the secondary grinding and polishing process.

Therefore, the black streak can be detected with certainty, and it is possible to obtain refined barley consisting of wheat grains almost completely free of the black streak.

Incidentally, the ratio of wheat grains without black streaks in the obtained wheat grains from which the black streaks have been removed is about 70% or more,
The barley grain having the black streak line was of such a degree that the black streak line could be spotted very locally in a spot-like manner, and was a wheat grain comparable in appearance to polished rice.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a method for producing refined wheat comprising barley grains without black streaks according to the present invention.

FIG. 2 is a schematic diagram of a sorting apparatus used for sorting and removing barley grains having black streaks remaining from the wheat grains.

FIGS. 3A and 3B are schematic diagrams illustrating a mechanism for determining a detection signal of wheat grains.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Alignment chute 2 Light source 3 Shade 4 Background 5 CCD image sensor 6 Condenser lens 7 Ejector 8 Top reflector 8 'Side reflector 8 "Bottom reflector 11 Wheat 12 Black stripe 13 Contour 14,15 Stocker

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Noboru Saito 633 Saishoji Temple, Masuho-cho, Minamikoma-gun, Yamanashi Prefecture (72) Inventor Sakae Ozawa 1064-5 Otsuka, Sanjucho, Nishi-Yatsushiro-gun, Yamanashi Prefecture 594-12 Okubo, Masuho-gun, Gunma (72) Koji Tamagawa, 326 Hatta, Isawa-cho, Higashi-Yatsushiro-gun, Yamanashi Prefecture (72) Inventor Yasushi Masuda 1351, Shoshoji, Masuho-cho, Minamikoma-gun, Yamanashi Pref. (JP, A) JP 34-468 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A23L 1/10

Claims (1)

(57) [Claims] Claims 1. A barley grain cut along the black streak after primary grinding and polishing is used as a raw material, and a bran layer of the barley, a part of the endosperm part and a part of the black streak are ground. Step (A) of removing and polishing, while feeding the wheat grains one by one, irradiating indirect light from the light source to each wheat grain, and adjusting the light amount of the black streak to the light amount of the contour line of the wheat grain and other parts. By comparison,
(B) detecting a black streak line with a CCD image sensor. Each of the wheat grains remaining in the black streak line detected and sorted in the (B) step is subjected to the steps (A) and (B). )
A method for producing refined barley comprising barley grains without black streaks, wherein the wheat is repeatedly passed.