KR200177097Y1 - Grain color sorting apparatus - Google Patents

Grain color sorting apparatus Download PDF

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Publication number
KR200177097Y1
KR200177097Y1 KR2019980008156U KR19980008156U KR200177097Y1 KR 200177097 Y1 KR200177097 Y1 KR 200177097Y1 KR 2019980008156 U KR2019980008156 U KR 2019980008156U KR 19980008156 U KR19980008156 U KR 19980008156U KR 200177097 Y1 KR200177097 Y1 KR 200177097Y1
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KR
South Korea
Prior art keywords
grains
sliding plate
genuine
defective
separate
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KR2019980008156U
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Korean (ko)
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KR19990041339U (en
Inventor
신석호
김남선
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신석호
김남선
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Priority to KR2019980008156U priority Critical patent/KR200177097Y1/en
Publication of KR19990041339U publication Critical patent/KR19990041339U/en
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Publication of KR200177097Y1 publication Critical patent/KR200177097Y1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties
    • B07C5/342Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3425Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties
    • B07C5/3412Sorting according to other particular properties according to a code applied to the object which indicates a property of the object, e.g. quality class, contents or incorrect indication
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36Sorting apparatus characterised by the means used for distribution
    • B07C5/363Sorting apparatus characterised by the means used for distribution by means of air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/36Sorting apparatus characterised by the means used for distribution
    • B07C5/38Collecting or arranging articles in groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0081Sorting of food items

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  • Sorting Of Articles (AREA)

Abstract

본 고안은 곡물의 색채 선별장치에 관한 것으로, 특히, 백미나 현미등 각종 곡물중 변색된 불량알곡을 자동선별하여 정확하게 2차에 걸쳐 분리시켜주는 것을 목적으로 한 것으로서, 선별기 본체내의 호퍼로 투입된 곡물이 진동판을 통과하여 다수개의 홈부로 형성된 분리슬라이딩판을 통과해서 하강하는데, 상기 분리슬라이딩판의 하측단 전후면에 설치된 색채 감지센서가 형성된 감광장치가 변색된 불량알곡을 감지하면 하단 일측에 설치된 에어분출장치가 강력한 에어를 분출시켜 불량알곡 및 주위의 소수알곡을 별도로 분리 하강시키되, 정품알곡은 하측단의 배출구를 통해 하측으로 적재되는 것이고, 1 차 분리된 불량알곡 및 소수의 알곡은 1, 2 차 이송스크루를 통해 일측으로 이동하여 이송콘베이어에 의해 상승 이송되어 재차 일측단의 2 차 분리슬라이딩판을 통해 하강하며, 이때 감지센서가 작동되어 변색된 불량알곡만을 감지하여 분출 이송시켜 정확하게 완전 선별시켜주도록 됨과 동시에 정품알곡은 정품알곡 적재부로 하강 적재되므로 2 번에 걸친 자동선별로서 빠르고도 완벽한 선별을 할 수 있도록 된 곡물의 색채 선별장치에 관한 것이다.The present invention relates to a color sorting device for grains, and in particular, to automatically separate the defective grains discolored among various grains such as white rice and brown rice, and accurately separate them in two steps. Passes through the diaphragm and descends through the separating sliding plate formed of a plurality of grooves. When the photosensitive device formed with the color detecting sensors installed on the front and rear surfaces of the lower end of the separating sliding plate detects a color change, the air is installed at one side of the lower side The blower ejects powerful air to separate and lower the defective grains and the surrounding minor grains separately, but the genuine grains are loaded downward through the outlet of the lower end, and the primary grains and the small grains separated first and second are It moves to one side through the car feed screw and is conveyed up by the conveying conveyor to separate the second side of one end again. It descends through the sliding plate. At this time, the detection sensor operates to detect only the discolored defective grains and transfers them to eject and transfer them accurately. At the same time, the genuine grains are lowered and loaded into the genuine grain loading section so that they are fast and perfect. The present invention relates to a color sorting device for grains that is capable of sorting.

Description

곡물의 색채 선별장치Grain sorting device

본 고안은 곡물의 색채 선별장치에 관한 것으로, 특히, 백미나 현미등 각종 곡물중 변색된 불량알곡을 자동선별할 수 있도록 된 선별기 본체내에 곡물을 투입하면 1 차로 불량알곡 및 함께 투출된 소수의 알곡을 분리 하강시켜 주고, 분리된 이 알곡들은 2 개의 이송스크루를 통해 일측의 호퍼로 재차 이동되어 하강시켜 2 차로 완벽하게 불량알곡만을 선별하여 분리 선별할 수 있도록 된 곡물의 색채 선별장치에 관한 것이다.The present invention relates to a color sorting device for grains, and in particular, when grains are put into the body of the sorter which is capable of automatically sorting the defective grains discolored among various grains such as white rice and brown rice, the first grains and a small number of grains thrown together The separated grains are separated, and the separated grains are moved back to the hopper on one side through two transfer screws and fall to the color sorting device of the grain, which is capable of separating and sorting only the defective grains completely.

일반적으로 각종 곡물들의 변색된 불량알곡을 선별하기 위하여 여러 가지의 장치들이 있었으나, 곡물을 호퍼에 투입시켜 진동판을 지나 경사진 슬라이드 판체로 이동시키면 색채 감지센서가 설치된 감광장치가 변색된 불량알곡을 감지하게 되고 이와 동시에 에어분출장치가 에어를 분출시켜 변색된 불량알곡을 분리 이탈시켜 주게 되는데, 이때, 불량알곡과 함께 포함되어 분리 이탈된 소수의 알곡들을 별도로 수거하여 선별장치의 호퍼내로 재투입시켜 재차 선별하도록 된 것으로서, 완전 선별에 시간이 걸리는 것은 물론, 재차 투입하여야 하므로 불편하고 비능률적인 문제점등이 있었다.In general, there were various devices for screening the discolored grains of various grains, but when the grain is put into the hopper and moved through the diaphragm to the inclined slide plate, the photosensitive device equipped with the color sensor detects the discolored grains. At the same time, the air ejecting device ejects and separates the discolored defective grains by ejecting the air. At this time, a small number of grains separated and separated with the defective grains are separately collected and re-introduced into the hopper of the sorting apparatus again. As it is to be screened, it takes time to complete screening, as well as the need to re-injection, there was an inconvenience and inefficient problems.

본 고안은 상기와 같은 종래의 문제점을 해결하기 위하여 안출한 것으로서, 본 고안의 목적은 각종 곡물중 변색된 불량알곡을 자동선별하되, 1 차로 자동선별된 것을 본체 하측단에 설치된 1, 2 차 이송스크루와 이송 콘베이어를 통해 2 차로 재이송시켜 완벽한 선별을 할 수 있도록 함에 그 목적이 있는 것으로, 선별기 본체내의 호퍼 하측으로 진동판을 설치하고, 상기 진동판 하측으로 다수개의 홈부가 형성되고 경사진 분리슬라이딩판을 설치하며, 상기 분리 슬라이딩판의 하측단 전, 후면에 색채 감지센서가 형성된 감광장치와 그 하측으로 에어분출장치를 설치하여서된 선별장치에 있어서, 별도의 배출구에 의해 적재부로 1 차 분리된 불량알곡 및 함께 투출된 소수의 알곡을 하측단의 1 차 이송스크루를 통해 이송시켜서 우측 배면으로 경사진 2 차 이송스크루를 통해 받침구가 설치된 이송 콘베이어에 의해 상승시켜 분리슬라이딩판 우측단의 2 차 분리슬라이딩판으로 투입하강하면 2 차로 감광장치 및 에어분출장치가 작동하여 2 차 배출구를 통해 변색된 불량알곡만을 정확하게 별도로 선별시켜 분리 수거할 수 있도록 하므로서 선별기 본체내에서 자동으로 2 차에 걸쳐 정확히 불량알곡만 선별 분리할 수 있어 매우 간편하고도 효과적인 고안인 것이다.The present invention is devised to solve the conventional problems as described above, the purpose of the present invention is to automatically sort the defective grains discolored in various grains, the first automatic sorting is installed at the lower end of the main body automatically The purpose of this is to allow perfect sorting by re-transferring through the screw and the conveying conveyor, and install a diaphragm under the hopper in the sorter main body, and a plurality of grooves are formed below the diaphragm and the inclined separating sliding plate And a sorting device in which an air ejecting device is installed below and a photosensitive device having a color sensing sensor formed on the rear side before and at the lower end of the separating sliding plate. Secondary grain inclined to the right rear side by transferring the grain and a small number of grains thrown out together through the lower feeder When lifted up by the conveying conveyor installed with a support hole through the song screw and put into the secondary separating sliding plate at the right end of the separating sliding plate, the photosensitive device and the air ejecting device operate secondly, so that only the defective grain discolored through the secondary outlet It is very simple and effective design because it is possible to separate and sort only the defective grains automatically in the sorter body automatically in the sorter body so that it can be separated and collected separately correctly.

도 1 은 본 고안의 사시도.1 is a perspective view of the present invention.

도 2 는 본 고안의 정면도.2 is a front view of the present invention.

도 3 은 본 고안의 A - A 선 측단면도.Figure 3 is a side cross-sectional view A-A line of the present invention.

도 4 는 본 고안의 B - B 선 측단면도.4 is a side cross-sectional view taken along line B-B of the present invention.

〈 도면의 주요부분에 대한 부호의 설명 〉<Description of reference numerals for the main parts of the drawings>

1 : 곡물의 색채 선별장치1: Color sorting device of grain

2 : 적재부 2' : 배출구 2" : 2 차 배출구2: loading part 2 ': outlet 2 ": secondary outlet

3 : 1 차 이송스크루3: 1st feed screw

4 : 2 차 이송스크루4: 2nd feed screw

5 : 받침구5: support

6 : 이송 콘베이어6: conveying conveyor

7 : 호퍼7: hopper

8 : 2 차 분리슬라이딩판8: secondary separation sliding plate

10 : 선별기 본체 20 : 호퍼 30 : 진동판10: sorter body 20: hopper 30: diaphragm

40 : 분리슬라이딩판 50 : 감광장치 60 : 에어분출장치40: separate sliding plate 50: photosensitive device 60: air blowing device

선별기 본체(10) 상측단의 호퍼(20) 하측으로 진동판(30)을 설치하고, 상기 진동판(30) 하측으로 홈부(41)가 형성된 다수개의 분리슬라이딩판(40)을 경사지게 설치하며, 상기 분리슬라이딩판(40)의 하측단 전, 후면에 색채 감지센서가 장착된 감광장치(50)를 설치하고, 그 하측으로 에어분출장치(60)를 설치하여서된 선별장치에 있어서, 선별기 본체(10) 하측단의 별도의 배출구(2') 하단 적재부(2) 내측으로 1 차 이송스크루(3)를 형성하되, 우측단부에 배면으로 경사지게 연결 설치된 2 차 이송스크루(4)와 상기 2 차 이송스크루(4) 일측으로 다수개의 받침구(5)가 형성된 이송 콘베이어(6)를 설치하고, 상기 이송 콘베이어(6) 상부 일측단은 호퍼(7)와 분리슬라이딩판(40)의 2 차 분리슬라이딩판(8)에 연결되어 2 차 배출구(2")를 통해 배출되도록 결합하여서된 곡물의 색채 선별장치(1)의 구조이다.The diaphragm 30 is installed below the hopper 20 at the upper end of the separator main body 10, and the plurality of separating sliding plates 40 with the groove 41 formed below the diaphragm 30 are inclined, and the separation is performed. In the sorting device provided with a photosensitive device 50 equipped with a color sensor on the front and rear of the lower end of the sliding plate 40, and the air blowing device 60 below, the sorter main body 10 A secondary conveying screw 4 and a secondary conveying screw are formed to be inclined toward the back at the right end to form a primary conveying screw 3 inside the lower discharge part 2 of the lower outlet 2 '. (4) Install a conveying conveyor (6) formed with a plurality of support holes (5) on one side, the upper one end of the conveying conveyor (6) is the secondary separation sliding plate of the hopper (7) and the separating sliding plate (40) The color of the combined grains connected to (8) and combined to be discharged through the secondary outlet (2 ") The structure of each unit (1).

미설명부호 " 100 " 은 정품알곡이고,Unexplained symbol "100" is a genuine grain,

" 200 " 은 불량알곡이며,"200" is bad grain,

" 300 " 은 정품알곡 적재부이고,"300" is a genuine grain loading section,

" 400 " 은 불량알곡 적재부이다."400" is a defective grain loading part.

이와 같이 구성된 본 고안은 선별기 본체(10) 상측단에 형성된 호퍼(20)로 백미나 현미 등의 선별할 곡물을 투입시키면 호퍼(20) 하측에 설치된 진동판(30)의 떨림 작용으로 전방측으로 이동되는 곡물이 다수개의 홈부(41)로 형성된 경사진 다수개의 분리슬라이딩판(40)을 통해 하강하는데, 상기 다수개의 분리슬라이딩판(40) 하측단부에 이르면 전, 후면에 설치된 감광장치(50)가 정품알곡(100)과 불량알곡(200)의 색채를 각각 감지하는데, 정품알곡(100)들은 그대로 통과하여 하측단의 정품알곡 적재부(300)로 적재되는 것이고, 변색된 불량알곡(200)이 감지되면 다수개의 에어분출장치(60)가 강력한 에어를 분출시켜 불량알곡(200) 및 그 주위의 소수의 정품알곡들을 동시에 분리 이탈시켜 별도의 배출구(2')를 통해 선별기 본체(10)의 하측단 적재부(2)로 낙하시켜주게 되고, 낙하된 불량알곡(200)과 소수의 정품알곡들은 적재부(2) 내측의 1 차 이송스크루(3)를 통해 우측으로 이동됨과 동시에 우측단부에서 배면으로 경사지게 설치된 2 차 이송스크루(4)를 지나 일측에 형성된 다수개의 받침구(5)에 안착되면서 연속 회전되는 이송 콘베이어(6)를 통해 상승되어서 상단 일측의 호퍼(7)를 지나 분리슬라이딩판(40) 일측단에 설치된 2 차 분리슬라이딩판(8)을 통해 하향되고 이때 감광장치(50)와 에어분출장치(60)의 작동으로 정품알곡(100)과 불량알곡(200)이 정확히 구분되어 정품알곡(100)은 정품알곡 적재부(300)에 그대로 투입되고, 불량알곡(200)은 정확히 선별 투출되어 하측단에 설치된 2 차 배출구(2")를 통해 불량알곡 적재부(400)로 이송 적재되는 것이다.The present invention configured as described above is moved to the front side by the shaking action of the diaphragm 30 installed on the lower side of the hopper 20 when the grain to be sorted such as white rice or brown rice is introduced into the hopper 20 formed at the upper end of the separator main body 10. Grain descends through a plurality of inclined sliding plate 40 formed of a plurality of grooves 41, when reaching the lower end of the plurality of separating sliding plate 40, the photosensitive device 50 installed on the front, rear is genuine Detects the color of the grain 100 and the defective grain 200, respectively, the genuine grain 100 is to pass through as it is to be loaded into the genuine grain loading unit 300 at the lower end, discolored defective grain 200 is detected When the plurality of air ejecting device 60 ejects the powerful air at the same time separate and separate the defective grain 200 and a few genuine grains around the lower end of the separator main body 10 through a separate outlet (2 ') Let it fall into the loading section (2). The high-quality falling grains 200 and a few genuine grains are moved to the right through the primary conveying screw 3 inside the loading part 2 and at the same time, the secondary conveying screw 4 installed to be inclined from the right end to the rear side. Secondary separation sliding installed at one end of the separation sliding plate 40 through the hopper (7) of the upper one side is raised through the conveying conveyor (6) that is continuously rotated while seated in a plurality of support ports (5) formed on one side through Downward through the plate (8) and at this time the genuine grain 100 and the defective grain 200 by the operation of the photosensitive device 50 and the air ejection device (60) is accurately distinguished genuine grain 100 is a genuine grain loading portion ( 300 as it is put, and the defective grain 200 is to be accurately transported to the defective grain loading unit 400 through the secondary outlet (2 ") installed on the lower end is correctly screened.

이상에서와 같이 본 고안은 선별기 본체(10)내의 호퍼(20)와 진동판(30)을 거쳐 하향 선별되는 곡물중 정품알곡(100)은 다수개의 분리슬라이딩판(40)의 홈부(41)를 통해 하향하여 그대로 하단측의 정품알곡 적재부(300)에 적재시키고, 불량알곡(200)은 하향 이송시 감광장치(50)가 감지함과 동시에 다수개의 에어분출장치(60)가 작동하여 강력한 에어를 분출시켜 일측으로 이탈 분리시켜주게 되어 별도의 배출구(2')를 통해 하측단에 설치된 적재부(2)에 이송되고, 상기 적재부(2)에 1 차로 분리되어 투입된 불량알곡(200) 및 함께 투출된 소수의 정품알곡(100) 들은 적재부(2)내에 설치된 1 차 이송스크루(3)를 통해 우측으로 이동된 후 우측단부에서 배면으로 경사지게 연결 설치된 2 차 이송스크루(4)로 계속 이송되어 상기 2 차 이송스크루(4) 일측으로 연결 설치된 이송 콘베이어(6)의 다수개의 받침구(5)에 연속으로 담겨서 상승하게 되고, 상승된 받침구(5)내의 불량알곡(200) 및 함께 투출된 소수의 정품알곡(100)들은 상단일측의 호퍼(7)에 투입되어 분리슬라이딩판(40)의 일측 2 차 분리슬라이딩판(8)에 의하여 하강되어 재차 일측단에 설치된 감광장치(50)와 에어분출장치(60)에 의하여 선별되어 정품알곡(100)은 정품알곡 적재부(300)에 투입되고 불량알곡(200)만 하측단의 2 차 배출구(2")를 통해 불량알곡 적재부(400)로 선별 투입되므로 빠르고도 완벽하게 선별되는 정확한 자동 선별 효과가 있는 것이다.As described above, the subject innovation is that the genuine grain 100 of the grains sorted downward through the hopper 20 and the diaphragm 30 in the separator body 10 is provided through the grooves 41 of the plurality of separate sliding plates 40. Loaded down into the genuine grain loading unit 300 of the lower side as it is downward, the defective grain 200 is detected by the photosensitive device 50 at the time of downward transport and at the same time a plurality of air ejection device 60 is operated to provide powerful air It is ejected and separated to one side to be separated and transferred to the loading section 2 installed at the lower end through a separate outlet (2 '), and the defective grain 200 is first put into the loading section (2) and A few genuine grains 100 to be discharged are moved to the right through the primary transfer screw (3) installed in the loading section (2) and then continuously transferred to the secondary transfer screw (4) installed inclined from the right end to the back Transfer connected to one side of the secondary transfer screw (4) It is contained in a plurality of bases (5) of the bayer 6 is continuously raised, the defective grain 200 in the raised base (5) and a few genuine grains (100) thrown together is the hopper ( 7) is added to the lower side by the secondary separating sliding plate (8) of one side of the separating sliding plate 40 and again selected by the photosensitive device 50 and the air blowing device (60) installed on one side end of the genuine grain (100) ) Is inserted into the genuine grain loading unit 300, and only the defective grain 200 is sorted into the defective grain loading unit 400 through the secondary outlet 2 " It works.

Claims (1)

선별기 본체(10) 상측단의 호퍼(20) 하측으로 진동판(30)을 설치하고, 상기 진동판(30) 하측으로 홈부(41)가 형성된 다수개의 분리슬라이딩판(40)을 경사지게 설치하며, 상기 분리슬라이딩판(40)의 하측단 전, 후면에 색채 감지센서가 장착된 감광장치(50)를 설치하고, 그 하측으로 에어분출장치(60)를 설치하여서된 선별장치에 있어서, 선별기 본체(10) 하측단의 별도의 배출구(2') 하단 적재부(2) 내측으로 1 차 이송스크루(3)를 형성하되, 우측단부에 배면으로 경사지게 연결 설치된 2 차이송스크루(4)와 상기 2 차 이송스크루(4) 일측으로 다수개의 받침구(5)가 형성된 이송 콘베이어(6)를 설치하고, 상기 이송 콘베이어(6) 상부 일측단은 호퍼(7)와 분리슬라이딩판(40)의 2 차 분리슬라이딩판(8)에 연결되어 2 차 배출구(2")를 통해 배출되도록 결합하여서된 것을 특징으로 하는 곡물의 색채 선별장치(1).The diaphragm 30 is installed below the hopper 20 at the upper end of the separator main body 10, and the plurality of separating sliding plates 40 with the groove 41 formed below the diaphragm 30 are inclined, and the separation is performed. In the sorting device provided with a photosensitive device 50 equipped with a color sensor on the front and rear of the lower end of the sliding plate 40, and the air blowing device 60 below, the sorter main body 10 The second transfer screw 4 and the second transfer screw are formed to be inclined to the rear end at the first end of the lower discharge part 2 'and the lower loading part 2, respectively. (4) Install a conveying conveyor (6) formed with a plurality of support holes (5) on one side, the upper one end of the conveying conveyor (6) is the secondary separation sliding plate of the hopper (7) and the separating sliding plate (40) It is connected to the (8), characterized in that coupled to discharge through the secondary outlet (2 ") Color sorting device for grains (1).
KR2019980008156U 1998-05-18 1998-05-18 Grain color sorting apparatus KR200177097Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100832304B1 (en) 2007-02-12 2008-05-26 한국식품연구원 Olbyeossal coated with anticariogenic substances and manufacturing method thereof
KR102199008B1 (en) 2020-06-29 2021-01-06 조현 Automatic discharging device for granularity sorter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113866176A (en) * 2021-09-18 2021-12-31 北京中仪智控科技有限公司 Full-automatic analyzer for imperfect grains

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100832304B1 (en) 2007-02-12 2008-05-26 한국식품연구원 Olbyeossal coated with anticariogenic substances and manufacturing method thereof
KR102199008B1 (en) 2020-06-29 2021-01-06 조현 Automatic discharging device for granularity sorter

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