JP5845751B2 - Dust collector in optical granular sorter - Google Patents

Dust collector in optical granular sorter Download PDF

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JP5845751B2
JP5845751B2 JP2011198930A JP2011198930A JP5845751B2 JP 5845751 B2 JP5845751 B2 JP 5845751B2 JP 2011198930 A JP2011198930 A JP 2011198930A JP 2011198930 A JP2011198930 A JP 2011198930A JP 5845751 B2 JP5845751 B2 JP 5845751B2
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dust
defective product
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granular material
separation chute
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博昭 金本
博昭 金本
光平 岸本
光平 岸本
信義 池田
信義 池田
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Satake Corp
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本発明は、光学式粒状物選別機における集塵装置に関する。   The present invention relates to a dust collector in an optical granular material sorter.

従来、穀粒などの光学式粒状物選別機には集塵装置が設けられている。この種の集塵装置は、光学式粒状物選別機の噴射ノズル装置を備えた選別部において、噴射ノズル装置から噴風される噴風選別作用によって生じる飛散浮遊粉塵を継続的に吸収排除するものであり、これにより、精密機器等で構成される光学検出部に粉塵が侵入することを防止し、ひいては、光学検出部の誤作動を防止し、選別精度を向上させることに寄与されるものである。例えば、特許文献１に開示された色彩選別機における集塵装置は、噴射ノズル口に対向する側に集塵窓部を形成した集塵ボックスと、該集塵ボックスの側部に設けた排風口に接続して粉塵を吸引排除するための集塵ダクトとを備えたものである。   Conventionally, a dust collector is provided in an optical granular material sorter such as a grain. This type of dust collector continuously absorbs and removes scattered floating dust generated by the blast blowing action blown from the jet nozzle device in the sorting section having the jet nozzle device of the optical granular material sorter. This prevents dust from entering the optical detection unit composed of precision instruments, etc., and thus contributes to preventing the optical detection unit from malfunctioning and improving the sorting accuracy. is there. For example, a dust collector in a color sorter disclosed in Patent Document 1 includes a dust collection box in which a dust collection window portion is formed on the side facing the injection nozzle port, and an air exhaust port provided on a side portion of the dust collection box. And a dust collection duct for suctioning and removing dust.

上記従来の集塵装置にあっては、噴射ノズル装置からの噴風により吹き飛ばされた不良品に混じる微細な粉塵のみが吸引除去されるものである。そして、噴射ノズル装置の噴風を受けずにそのまま流下する良品の良品回収樋が、噴射ノズル装置よりも下方側に設けられた配置構成であるために、以下のような問題点が生じる。すなわち、１．噴射ノズル装置の噴風作用を受けずにそのまま流下する良品は、良品に混入する微細な粉塵が吸引除去されない。２．集塵装置の吸引力が弱い場合、不良品に混じる微細な粉塵が良品回収樋内に侵入し、良品側に塵埃が混入するおそれがある。   In the conventional dust collector, only fine dust mixed with defective products blown off by the blast from the spray nozzle device is sucked and removed. And since the non-defective product recovery rods that flow down as they are without receiving the blast of the spray nozzle device are provided below the spray nozzle device, the following problems arise. That is: In the non-defective product that flows down as it is without receiving the blast effect of the spray nozzle device, fine dust mixed in the non-defective product is not sucked and removed. 2. If the suction force of the dust collector is weak, fine dust mixed with defective products may enter the non-defective product collection basket and dust may enter the good product side.

特許第３２８５０７６号公報Japanese Patent No. 3285076

本発明は上記問題点にかんがみ、不良品側に混じる微細な粉塵とともに、良品側に混じる微細な粉塵をも吸引除去することが可能な光学式粒状物選別機における集塵装置を提供することを技術的課題とする。   In view of the above problems, the present invention provides a dust collector in an optical granular material sorter capable of sucking and removing fine dust mixed on a defective product side as well as fine dust mixed on a defective product side. Technical issue.

上記課題を解決するため本発明は、粒状物からなる原料を落下させて所定位置において光学的に検出する光学検出手段と、該光学検出手段による検出結果に基づいて前記粒状物を落下軌跡から排除して選別する選別部と、該選別部によって落下軌跡から排除された粒状物を受ける不良品回収樋及び前記選別部によって落下軌跡から排除されずに落下した粒状物を受ける良品回収樋からなる選別物回収部と、を備えた光学式粒状物選別機であって、
前記選別物回収部の下方には、前記良品回収樋下部と連通し、かつ、一部が通気性部材により形成された良品側塵埃分離シュートと、前記不良品回収樋下部と連通し、かつ、一部が通気性部材により形成された不良品側塵埃分離シュートと、前記良品側塵埃分離シュート及び前記不良品側塵埃分離シュートに形成した前記通気性部材を横断させる状態で配設した塵埃吸引ダクトと、該塵埃吸引ダクトの吸引口に接続され、前記通気性部材で分離した塵埃を機外に吸引排除するための吸引ファンとを備えた集塵部を設け、
前記塵埃吸引ダクトは、その上流側に二次空気取入口を穿設するとともに、該二次空気取入口側から良品側塵埃分離シュート、不良品側塵埃分離シュートの順で横断させた後に前記吸引ファンに連通する、という技術的手段を講じた。 In order to solve the above-described problems, the present invention eliminates the particulate matter from the fall trajectory based on the detection result of the optical detection means that drops the raw material made of the particulate matter and optically detects it at a predetermined position A sorting unit for sorting and a defective product collecting basket that receives the granular material excluded from the falling locus by the sorting unit, and a non-defective product collecting basket that receives the granular material that has fallen without being excluded from the falling locus by the sorting unit. An optical granular material sorter equipped with a material recovery unit,
A lower part of the sorted product collecting unit communicates with the lower part of the non-defective product collecting bowl, and communicates with a non-defective article side dust separation chute partially formed by a breathable member, and the lower part of the defective article collecting bowl, and Defective product-side dust separation chute partially formed by a breathable member, and a dust suction duct arranged in a state of traversing the good product-side dust separation chute and the breathable member formed on the defective product-side dust separation chute And a dust collecting unit that is connected to a suction port of the dust suction duct and includes a suction fan for sucking and removing dust separated by the breathable member outside the apparatus ,
The dust suction duct is provided with a secondary air intake on the upstream side thereof, and the suction is performed after traversing the non-defective product side dust separation chute and the defective product side dust separation chute in this order from the secondary air intake side. Technical measures were taken to communicate with the fans .

請求項２記載の発明によれば、光学式粒状物選別機を複数並設した構成の装置に、前記集塵部が取り付けられて構成されていることを特徴とする。 According to invention of Claim 2 , the said dust collection part is attached to the apparatus of the structure which arranged the optical granular material sorter in parallel, It is characterized by the above-mentioned.

本発明によれば、選別物回収部の下方には、良品回収樋下部と連通し、かつ、一部が通気性部材により形成された良品側塵埃分離シュートと、不良品回収樋下部と連通し、かつ、一部が通気性部材により形成された不良品側塵埃分離シュートと、良品側塵埃分離シュート及び不良品側塵埃分離シュートに形成した通気性部材を横断させる状態で配設した塵埃吸引ダクトと、塵埃吸引ダクトの吸込口に接続され、通気性部材で分離した塵埃を機外に吸引排除するための吸引ファンとを備えた集塵部を設けてあるから、塵埃吸引ダクトによる吸引風が、不良品側塵埃分離シュート及び良品側塵埃分離シュートの複数の通気性部材を順次横断させて通過される構成となっている。つまり、図２に示すように、不良品側塵埃分離シュートの不良品に混じる微細な粉塵とともに、良品側塵埃分離シュートの良品に混じる微細な粉塵をも吸引除去することが可能となる。   According to the present invention, the non-defective product collecting dust lowering part communicates with the lower part of the sorted product collecting part and the non-defective product side dust separation chute partially formed by the air-permeable member and communicated with the lower part of the defective product collecting basket. In addition, a dust suction duct arranged in a state of traversing the defective product side dust separation chute partially formed by the breathable member and the good product side dust separation chute and the defective product side dust separation chute And a suction fan that is connected to the suction port of the dust suction duct and sucks and removes the dust separated by the breathable member outside the machine. The plurality of air-permeable members of the defective product side dust separation chute and the good product side dust separation chute are sequentially traversed and passed. That is, as shown in FIG. 2, it is possible to suck and remove fine dust mixed with defective products on the defective product side dust separation chute, as well as fine dust mixed with defective products on the good product side dust separation chute.

そして、塵埃吸引ダクトは、その上流側に二次空気取入口を穿設するとともに、該二次空気取入口側から良品側塵埃分離シュート、不良品側塵埃分離シュートの順で横断させた後に前記吸引ファンに連通するものであるから、まず、二次空気取入口から清浄空気を取り入れて、上流側の良品側塵埃分離シュートの塵埃を吸引し、次いで、下流側の不良品側塵埃分離シュートの塵埃を吸引することができ、複数の通気性部材を吸引した場合であっても、吸引風力が減衰することはなく、塵埃の吸引除去力が向上する。 The dust suction duct is provided with a secondary air inlet on the upstream side thereof, and after traversing in order from the secondary air intake side to the non-defective product side dust separation chute and the defective product side dust separation chute. Since it communicates with the suction fan , first, clean air is taken in from the secondary air intake port, and the dust from the non-defective product side dust separation chute is sucked up from the upstream side . Dust can be sucked, and even when a plurality of breathable members are sucked, the suction wind force is not attenuated, and the dust suction and removal force is improved.

また、光学式粒状物選別機を複数並設した構成の装置に、前記集塵部が取り付けられているから、幅広いバリエーションの光学式粒状物選別機への適用が可能となる。   In addition, since the dust collecting unit is attached to an apparatus having a configuration in which a plurality of optical granular material sorters are arranged side by side, it can be applied to a wide variety of optical granular material sorters.

本発明の光学式粒状物選別機における集塵装置の概略縦断面図である。It is a schematic longitudinal cross-sectional view of the dust collector in the optical granular material sorter of this invention. 図１の一部拡大断面図である。It is a partially expanded sectional view of FIG. 図１に示す選別機を複数並設した構成の選別装置の斜視図である。FIG. 2 is a perspective view of a sorting apparatus having a configuration in which a plurality of sorters shown in FIG. 1 are arranged side by side.

以下、図面に基づき、本発明の好適な実施の形態について説明する。図１は本発明の光学式粒状物選別機における集塵装置の概略縦断面図であり、図２は図１の一部拡大断面図である。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of a dust collector in the optical granular material sorter of the present invention, and FIG. 2 is a partially enlarged sectional view of FIG.

図１において、符号１は、穀粒や樹脂ペレットなどの粒状物からなる原料を、色彩など光学的手段に基づいて良品と不良品とに選別する光学式粒状物選別機である。この選別機１は主として粒状物供給部２、流下シュート３、光学検出部４、選別部５、選別物回収部６及び集塵部７を備えてなる。   In FIG. 1, the code | symbol 1 is an optical granular material sorter which sorts the raw material which consists of granular materials, such as a grain and a resin pellet, into a non-defective product and a defective product based on optical means, such as a color. This sorter 1 mainly includes a granular material supply unit 2, a falling chute 3, an optical detection unit 4, a sorting unit 5, a sorted product collection unit 6, and a dust collection unit 7.

前記粒状物供給部２は、選別機１の上部に配置され、原料供給樋８内の粒状物を流下シュート３へ向けて安定的に繰り出す振動フィーダ９を備える。流下シュート３は、所定幅を有するものであり、前記粒状物供給部２の下方に傾斜した状態で配置され、前記粒状物供給部２の振動フィーダ９から連続して繰り出される粒状物を該シュートの表面上を流下させるものである。   The granular material supply unit 2 includes an oscillating feeder 9 that is disposed at the top of the sorter 1 and that stably feeds the granular material in the raw material supply basket 8 toward the flow chute 3. The downflow chute 3 has a predetermined width, is arranged in a state of being inclined below the granular material supply unit 2, and the granular material continuously fed out from the vibration feeder 9 of the granular material supply unit 2 is taken into the chute. It will flow down on the surface.

前記光学検出部４は、前記粒状物の落下軌跡の前側に配置される前側光学検出部４ａと、落下軌跡の後側に配置される後側光学検出部４ｂとの一対で構成され、前記粒状物の一粒のほぼ全周囲を監視できる構成となっている。前側光学検出部４ａには、前記流下シュート３の下端から幅方向に広がる状態で自由落下する粒状物に対応できるＣＣＤ等のラインセンサやエリアセンサを内蔵し、可視光の波長域の光を受光可能としたＣＣＤカメラ４０ａが内装されている。このＣＣＤカメラ４０ａと粒状物との間の光学系は、その構造を小型化するためにミラー４１ａが配設されている。すなわち、粒状物Ｒから得られる光をミラー４１ａにより９０度反射させてＣＣＤカメラ４０ａで受光されるような構成となっている。一方、後側光学検出部４ｂには、前記同様可視光の光を受光可能としたＣＣＤカメラ４０ｂと、近赤外線（ＮＩＲ）の波長域の光を受光可能としたＣＣＤカメラ４２ｂとが内装される。この光学系にあっても、ミラー４１ｂを配設して、粒状物Ｒから得られる光をミラー４１ｂにより９０度反射させるとともに、さらに、反射させた光をダイクロイックミラーなどの分光フィルター４３ｂにより分光し、可視光の光がＣＣＤカメラ４０ｂに、近赤外光の光がＣＣＤカメラ４２ｂにそれぞれ受光される構成となっている。   The optical detection unit 4 includes a pair of a front optical detection unit 4a disposed on the front side of the dropping trajectory of the granular material and a rear optical detection unit 4b disposed on the rear side of the falling trajectory. It is configured to monitor almost the entire circumference of one grain of objects. The front optical detection unit 4a incorporates a line sensor such as a CCD or an area sensor that can handle a granular material that freely falls in a state of spreading in the width direction from the lower end of the flow chute 3, and receives light in the visible wavelength range. A possible CCD camera 40a is provided. The optical system between the CCD camera 40a and the granular material is provided with a mirror 41a in order to reduce the size of the structure. That is, the light obtained from the granular material R is reflected 90 degrees by the mirror 41a and received by the CCD camera 40a. On the other hand, the rear optical detection unit 4b includes a CCD camera 40b capable of receiving visible light and a CCD camera 42b capable of receiving light in the near infrared (NIR) wavelength region. . Even in this optical system, the mirror 41b is disposed so that the light obtained from the granular material R is reflected by 90 degrees by the mirror 41b, and the reflected light is further dispersed by the spectral filter 43b such as a dichroic mirror. The visible light is received by the CCD camera 40b and the near-infrared light is received by the CCD camera 42b.

前記光学検出部４には、前記粒状物Ｒの落下軌跡上における検出位置を照明する蛍光灯やハロゲンランプ、ＬＥＤ光源等の照明手段４４ａ，４４ｂと、粒状物を撮像する際の背景となるバックグラウンドとを備えている。   The optical detection unit 4 includes illumination means 44a and 44b such as a fluorescent lamp, a halogen lamp, and an LED light source that illuminate a detection position on the falling locus of the granular material R, and a back that is a background when imaging the granular material. And ground.

前記選別部５は、前記光学検出部４の撮像信号に基づいて前記粒状物を良品と不良品とに判別する判別装置５１と、該判別装置５１の判別結果に基づいて前記不良品を排除し、前記粒状物を良品と不良品とに選別する噴射ノズル装置５２を備えてなる。噴射ノズル装置５２は、前記光学検出部４と同様に、前記流下シュート３の下端から幅方向に広がる状態で自由落下する粒状物に対応できるものであって、前記幅方向に形成される複数のノズル孔から選択的にエアを噴射して不良品を排除することができるものである。   The sorting unit 5 discriminates the granular product from a non-defective product and a defective product based on the imaging signal of the optical detection unit 4, and excludes the defective product based on the discrimination result of the discrimination device 51. The injection nozzle device 52 is provided for sorting the granular material into a non-defective product and a defective product. As with the optical detection unit 4, the spray nozzle device 52 is capable of dealing with particulate matter that freely falls in a state of spreading in the width direction from the lower end of the flow chute 3, and a plurality of nozzles formed in the width direction. Defective products can be eliminated by selectively injecting air from the nozzle holes.

前記選別物回収部６は、前記噴射ノズル装置５２からのエアの噴射を受けずにそのまま良品として回収される筒状の良品回収樋６１と、前記噴射ノズル装置５２からのエアの噴射を受けて落下軌跡から排除されるホッパ形状の不良品回収樋６２とから形成される。なお、符号６３は良品回収樋６１に設けられたサンプル取り出し用扉である。   The selected product collection unit 6 receives a cylindrical non-defective product collecting rod 61 that is collected as a non-defective product without receiving the air jet from the jet nozzle device 52 and the air jet from the jet nozzle device 52. It is formed from a hopper-shaped defective product collecting rod 62 that is excluded from the dropping locus. Reference numeral 63 denotes a sample take-out door provided in the non-defective product collecting basket 61.

次に、本発明の要部となる集塵部７について説明する。集塵部７は、一部が通気性部材７３ａ，７３ｂにより形成されていて、前記良品回収樋６１下部と連通する良品側塵埃分離シュート７１と、一部が通気性部材７４ａ，７４ｂにより形成されていて、前記不良品回収樋６２下部と連通する不良品側塵埃分離シュート７２と、前記良品側塵埃分離シュート７１及び前記不良品側塵埃分離シュート７２を落下する粒状物の落下経路にあって、前記通気性部材７３ａ，７３ｂ，７４ａ，７４ｂを横断させる状態で配設される塵埃吸引ダクト７５と、塵埃を回収するための吸引ファン７６と、該吸引ファン７６の吸引側７６ａと前記塵埃吸引ダクト７５の吸込口７５ａとの間を接続するフレキシブルダクト７７とを備えている。   Next, the dust collection part 7 used as the principal part of this invention is demonstrated. Part of the dust collecting portion 7 is formed by the air permeable members 73a and 73b, and the non-defective product side dust separation chute 71 communicating with the lower part of the non-defective product collecting basket 61 and the part are formed by the air permeable members 74a and 74b. A defective product-side dust separation chute 72 communicating with the lower part of the defective product recovery basket 62, a non-defective product-side dust separation chute 71, and a particulate-falling path for dropping the defective product-side dust separation chute 72, A dust suction duct 75 disposed in a state of traversing the air-permeable members 73a, 73b, 74a, 74b, a suction fan 76 for collecting dust, a suction side 76a of the suction fan 76, and the dust suction duct The flexible duct 77 which connects between 75 inlets 75a is provided.

前記良品側塵埃分離シュート７１及び不良品側塵埃分離シュート７２の一部に形成される通気性部材７３ａ，７３ｂ，７４ａ，７４ｂは、シュートを落下する粒状物を通さない程度の目幅のパンチングメタルや織網で形成すればよい。また、前記塵埃吸引ダクト７５は、上流側に二次空気取入口７５ｂが穿設されており、該二次空気取入口７５ｂから取り入れた外気を、前記通気性部材７３ａ，７３ｂ及び前記通気性部材７４ａ，７４ｂを順次横断させる状態で、吸込口７５ａに向けて吸引排出するように構成されている。つまり、図２に示すように、前記不良品回収樋６２から落下して不良品側塵埃分離シュート７２に至る不良品に混じる微細な粉塵とともに、良品回収樋６１から落下して良品側塵埃分離シュート７１に至る良品に混じる微細な粉塵をも吸引除去することが可能な構成となっている。   The breathable members 73a, 73b, 74a, and 74b formed on a part of the non-defective product side dust separation chute 71 and the defective product side dust separation chute 72 are punched metal having a mesh width that does not allow particulate matter falling through the chute to pass through. What is necessary is just to form with woven mesh. In addition, the dust suction duct 75 has a secondary air intake port 75b formed upstream, and external air taken in from the secondary air intake port 75b is introduced into the air permeable members 73a and 73b and the air permeable member. In a state where 74a and 74b are sequentially traversed, suction and discharge are performed toward the suction port 75a. That is, as shown in FIG. 2, it falls from the non-defective product collection basket 61 together with the fine dust mixed in the defective product that falls from the defective product collection basket 62 and reaches the defective product-side dust separation chute 72. The fine dust mixed with the non-defective product reaching 71 can be sucked and removed.

図３は、図１に示す選別機１を複数並設した構成の選別装置１００の斜視図である。この選別装置１００は、第１選別ユニット１Ａ、第２選別ユニット１Ｂ及び第３選別ユニット１Ｃからなる複数の選別ユニットを並設してある。これにより、第１選別ユニット１Ａ及び第２選別ユニット１Ｂを一次選別用に設定する一方、第３選別ユニット１Ｃを二次選別用に設定することや、第１選別ユニット１Ａを一次選別用、第２選別ユニット１Ｂを二次選別用及び第３選別ユニット１Ｃを三次選別用にそれぞれ設定することも可能となる。つまり、被選別物の品種、流量及び異物混入率などの原料の状態が変わったときに、当該原料にふさわしい選別形態に適宜変更することができる。このような選別装置１００にあっても、本発明の要部となる集塵部７を適用することができる。   FIG. 3 is a perspective view of a sorting apparatus 100 having a configuration in which a plurality of sorters 1 shown in FIG. 1 are arranged side by side. The sorting apparatus 100 includes a plurality of sorting units including a first sorting unit 1A, a second sorting unit 1B, and a third sorting unit 1C. Accordingly, the first sorting unit 1A and the second sorting unit 1B are set for primary sorting, while the third sorting unit 1C is set for secondary sorting, or the first sorting unit 1A is set for primary sorting, It is possible to set the second sorting unit 1B for secondary sorting and the third sorting unit 1C for tertiary sorting. That is, when the state of the raw material such as the type, flow rate, and foreign matter mixing rate of the object to be selected changes, it can be appropriately changed to a selection form suitable for the raw material. Even in such a sorting apparatus 100, the dust collecting part 7 which is a main part of the present invention can be applied.

すなわち、図３の第１選別ユニット１Ａ、第２選別ユニット１Ｂ及び第３選別ユニット１Ｃには、それぞれ良品側塵埃分離シュート７１Ａ，７１Ｂ，７１Ｃ及び不良品側塵埃分離シュート７２Ａ，７２Ｂ，７２Ｃが設けられ、また、共通の塵埃吸引ダクト７５も設けられている。その余の構成（吸引ファン７６及びフレキシブルダクト７７）は図３では図示されていないが、図１及び図２と同様の構成となっている。そして、この複数の選別ユニットを並設した構成にあっても、塵埃吸引ダクト７５には、上流側に二次空気取入口７５ｂが穿設されているから、図２と同様に、前記不良品側塵埃分離シュート７２Ａ，７２Ｂ，７２Ｃに至る不良品に混じる微細な粉塵とともに、良品側塵埃分離シュート７１Ａ，７１Ｂ，７１Ｃに至る良品に混じる微細な粉塵をも吸引除去することが可能な構成となっている。   That is, the first sorting unit 1A, the second sorting unit 1B, and the third sorting unit 1C of FIG. 3 are provided with good product side dust separation chutes 71A, 71B, 71C and defective product side dust separation chutes 72A, 72B, 72C, respectively. In addition, a common dust suction duct 75 is also provided. The remaining configuration (suction fan 76 and flexible duct 77) is not shown in FIG. 3, but has the same configuration as in FIGS. Even in the configuration in which the plurality of sorting units are arranged side by side, the dust suction duct 75 has a secondary air intake port 75b on the upstream side. In addition to the fine dust mixed in the defective product reaching the side dust separation chutes 72A, 72B, 72C, the fine dust mixed in the non-defective product reaching the non-defective product side dust separation chutes 71A, 71B, 71C can be sucked and removed. ing.

以上のように本発明によれば、集塵部７が、一部が通気性部材７３ａ，７３ｂにより形成された良品側塵埃分離シュート７１と、一部が通気性部材７４ａ，７４ｂにより形成された不良品側塵埃分離シュート７２と、前記良品側塵埃分離シュート７１及び前記不良品側塵埃分離シュート７２を落下する粒状物の落下経路であって前記通気性部材７３ａ，７３ｂ，７４ａ，７４ｂを横断させる状態で吸引する塵埃吸引ダクト７５と、塵埃を回収するための吸引ファン７６と、該吸引ファン７６の吸引側７６ａと前記塵埃吸引ダクト７５の吸込口７５ａとの間を接続するフレキシブルダクト７７とを備えたものであるから、前記不良品側塵埃分離シュート７２に至る不良品に混じる微細な粉塵とともに、良品側塵埃分離シュート７１に至る良品に混じる微細な粉塵をも吸引除去することが可能となった。   As described above, according to the present invention, the dust collection portion 7 is formed by the non-defective product-side dust separation chute 71 partially formed by the breathable members 73a and 73b and partially formed by the breathable members 74a and 74b. It is a drop path of the defective product-side dust separation chute 72, the non-defective product-side dust separation chute 71, and the granular material that falls on the defective product-side dust separation chute 72 and crosses the air-permeable members 73a, 73b, 74a, 74b. A dust suction duct 75 that sucks in a state, a suction fan 76 for collecting dust, and a flexible duct 77 that connects between the suction side 76a of the suction fan 76 and the suction port 75a of the dust suction duct 75. Since it is provided, not only the fine dust mixed with the defective product reaching the defective product side dust separation chute 72 but also the good product reaching the good product side dust separation chute 71 is obtained. Jill even fine dust has become possible to aspirate.

本発明は、米・麦類・豆類・ナッツ類等の穀粒、ペレット・ビーズ等の樹脂片、医薬品、鉱石類、シラス等の細かい物品、その他の粒状物からなる原料を良品と不良品に選別したり、原料に混入する異物等を排除したりする光学式粒状物選別機に適用することができ、また、当該光学式粒状物選別機を複数並設した構成の選別装置にも適用することができる。   In the present invention, raw materials comprising grains such as rice, wheat, beans, nuts, etc., resin pieces such as pellets and beads, fine articles such as pharmaceuticals, ores, shirasu, and other granular materials are made into good and defective products. It can be applied to an optical granular material sorter that sorts or eliminates foreign matters mixed in raw materials, and also applies to a sorting device having a configuration in which a plurality of optical granular material sorters are arranged in parallel. be able to.

１ 光学式粒状物選別機
１Ａ 第１選別ユニット
１Ｂ 第２選別ユニット
１Ｃ 第３選別ユニット
２ 粒状物供給部
３ 流下シュート
４ 光学検出部
４ａ 前側光学検出部
４ｂ 後側光学検出部
４０ａ ＣＣＤカメラ
４０ｂ ＣＣＤカメラ
４１ａ ミラー
４１ｂ ミラー
４２ｂ ＣＣＤカメラ
４３ｂ 分光フィルター
４４ａ 照明手段
４４ｂ 照明手段
５ 選別部
５１ 判別装置
５２ 噴射ノズル装置
６ 選別物回収部
６１ 良品回収樋
６２ 不良品回収樋
６３ 良品用シュート
６４ 不良品用シュート
６５ サンプル取り出し用扉
７ 集塵部
７１ 良品側塵埃分離シュート
７２ 不良品側塵埃分離シュート
７３ 通気性部材
７４ 通気性部材
７５ 塵埃吸引ダクト
７５ａ 吸込口
７５ｂ 二次空気取入口
７６ 吸引ファン
７７ フレキシブルダクト
８ 原料供給樋
９ 振動フィーダ
１００ 選別装置 DESCRIPTION OF SYMBOLS 1 Optical granule sorter 1A 1st sort unit 1B 2nd sort unit 1C 3rd sort unit 2 Granule supply part 3 Flowing chute 4 Optical detection part 4a Front side optical detection part 4b Rear side optical detection part 40a CCD camera 40b CCD Camera 41a Mirror 41b Mirror 42b CCD camera 43b Spectral filter 44a Illumination means 44b Illumination means 5 Sorting unit 51 Discriminating device 52 Injection nozzle device 6 Sorted product collection unit 61 Non-defective product collection basket 62 Non-defective product collection basket 63 Non-defective product chute 64 Defect product chute 65 Sample extraction door 7 Dust collecting part 71 Non-defective product side dust separation chute 72 Defective product side dust separation chute 73 Breathable member 74 Breathable member 75 Dust suction duct 75a Suction port 75b Secondary air intake port 76 Suction fan 77 Flexible duct 8 Raw material supply bowl 9 Moving the feeder 100 sorting device

Claims (2)

粒状物からなる原料を落下させて所定位置において光学的に検出する光学検出手段と、
該光学検出手段による検出結果に基づいて前記粒状物を落下軌跡から排除して選別する選別部と、
該選別部によって落下軌跡から排除された粒状物を受ける不良品回収樋及び前記選別部によって落下軌跡から排除されずに落下した粒状物を受ける良品回収樋からなる選別物回収部と、を備えた光学式粒状物選別機であって、
前記選別物回収部の下方には、前記良品回収樋下部と連通し、かつ、一部が通気性部材により形成された良品側塵埃分離シュートと、前記不良品回収樋下部と連通し、かつ、一部が通気性部材により形成された不良品側塵埃分離シュートと、前記良品側塵埃分離シュート及び前記不良品側塵埃分離シュートに形成した前記通気性部材を横断させる状態で配設した塵埃吸引ダクトと、該塵埃吸引ダクトの吸引口に接続され、前記通気性部材で分離した塵埃を機外に吸引排除するための吸引ファンとを備えた集塵部を設け、
前記塵埃吸引ダクトは、その上流側に二次空気取入口を穿設するとともに、該二次空気取入口側から良品側塵埃分離シュート、不良品側塵埃分離シュートの順で横断させた後に前記吸引ファンに連通したことを特徴とする光学式粒状物選別機における集塵装置。 An optical detection means for dropping a raw material made of granular material and optically detecting it at a predetermined position;
A screening unit that screens the particulate matter by removing it from the falling locus based on the detection result by the optical detection unit;
A defective product recovery basket that receives the granular material that has been excluded from the fall trajectory by the sorting section, and a sorted product recovery section that includes the non-defective product recovery basket that receives the granular material that has been dropped from the fall trajectory by the sorting section. An optical granular sorter,
A lower part of the sorted product collecting unit communicates with the lower part of the non-defective product collecting bowl, and communicates with a non-defective article side dust separation chute partially formed by a breathable member, and the lower part of the defective article collecting bowl, and Defective product-side dust separation chute partially formed by a breathable member, and a dust suction duct arranged in a state of traversing the good product-side dust separation chute and the breathable member formed on the defective product-side dust separation chute And a dust collecting unit that is connected to a suction port of the dust suction duct and includes a suction fan for sucking and removing dust separated by the breathable member outside the apparatus ,
The dust suction duct is provided with a secondary air intake on the upstream side thereof, and the suction is performed after traversing the non-defective product side dust separation chute and the defective product side dust separation chute in this order from the secondary air intake side. A dust collector in an optical granular material sorter characterized by communicating with a fan . 前記光学式粒状物選別機を複数並設した構成の装置に、前記集塵部が取り付けられて構成されている請求項１に記載の光学式粒状物選別機における集塵装置。   The dust collector in the optical granule sorter according to claim 1, wherein the dust collector is attached to an apparatus having a configuration in which a plurality of the optical granule sorters are arranged side by side.
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