JP2009254966A

JP2009254966A - Grain sorting method, and device therefor

Info

Publication number: JP2009254966A
Application number: JP2008106429A
Authority: JP
Inventors: Masayuki Domon; 正幸土門; Satoru Tezuka; 覚手塚; Shingo Minami; 慎吾南
Original assignee: Kaneko Agricultural Machinery Co Ltd
Current assignee: Kaneko Agricultural Machinery Co Ltd
Priority date: 2008-04-16
Filing date: 2008-04-16
Publication date: 2009-11-05

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grain sorting method which sufficiently attain the sorting and removal of fine dust and the prevention in the scattering and floating thereof precedingly without being restricted by the sorting capacity of coarse foreign matter, and also can effectively sort and remove foreign matters, and to provide a device therefor. <P>SOLUTION: The grain sorting device 1 is composed of: a preceding fine dust removal treatment part 2 sorting fine dust intermingled in the grains to be sorted by wind force; and a succeeding coarse foreign matter removal treatment part 3 separating and exhausting coarse foreign matter from the grains to be sorted freed of the fine dust in the preceding fine dust removal treatment part 2. The succeeding coarse foreign matter removal treatment part 3 is provided with: a tilted porous sorting board 18; a flexible porous scattering preventive sheet 19 covering the upper face of the tilted porous sorting board 18; and an electric oscillating machine 23 oscillating the tilted porous sorting board 18. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、収穫した穀物に混在する土埃りなどの細塵ならびに藁屑、土塊、石塊、草木類、小動物の死骸、金属片およびプラスチック片などの粗大異物を選別して除去する穀物選別方法およびその装置に関するものである。 The present invention relates to a grain sorting method for sorting and removing fine dust such as dust mixed in harvested grain and coarse foreign matters such as sawdust, earth lump, stone lump, vegetation, carcasses of small animals, metal pieces and plastic pieces. And the apparatus.

収穫した穀物には土埃りなどの細塵から藁屑、土塊、石塊、草木類、小動物の死骸、金属片およびプラスチック片などの粗大異物（夾雑物）が混在しているので、乾燥後または乾燥前に粗選別してこれらの異物を除去する処理を必要とする。従来、そのための選別装置としては、特開平１０−５２１６２号公報が紹介するように、多孔選別面上を投入した被選別穀物層にその下方から上方に向け通風して流動層を形成することにより、穀物中から細塵を分離して上方に排出し、流動層選別部に流動層となって整粒とともに残る粗大異物は流動層選別部から整粒と粗大異物に分離して排出するようになっている。 Since the harvested grains contain fine dust such as dust, coarse foreign matter (contamination) such as sawdust, earth lump, stone lump, vegetation, carcass of small animals, metal pieces and plastic pieces, etc. It is necessary to perform a process of roughly selecting these foreign substances before drying. Conventionally, as a sorting device for that purpose, as introduced in Japanese Patent Laid-Open No. 10-52162, a fluidized bed is formed by ventilating a grain layer to be sorted placed on a porous sorting surface upward from below. , So that fine dust is separated from the grain and discharged upward, and the coarse particles remaining in the fluidized bed sorting section as a fluidized bed are separated and separated from the fluidized bed sorting section into granulated and coarse foreign particles. It has become.

なお、穀物乾燥機において被乾燥穀物の搬送経路に振動篩を介在させた構成は実用新案登録第３０３２３２９号公報に掲載されており、また、穀物の石抜機において選別多孔板の一部上面を吹上飛散防止網で覆った構成は特開２０００−３４３０３９公報に掲載されている。
特開平１０−５２１６２号公報実用新案登録第３０３２３２９号公報特開２０００−３４３０３９公報 In addition, a configuration in which a vibrating sieve is interposed in the transport path of the grain to be dried in the grain dryer is described in Utility Model Registration No. 3032329, and a part of the top of the perforated plate is blown up in the grain stone remover. A configuration covered with a scattering prevention net is disclosed in Japanese Patent Application Laid-Open No. 2000-343039.
Japanese Patent Laid-Open No. 10-52162 Utility Model Registration No. 3032329 JP 2000-343039 A

前掲の特開平１０−５２１６２号公報に開示されているように、被選別穀物層にその下方から上方に向け通風して流動層を形成することにより、穀物中から細塵を分離して上方に吹き上げ排出するとともに、残留細塵とともに被選別穀物を流動層選別部から排出するものであるから、流動層選別部に送風される圧風により特に細塵が装置の周辺に飛散浮遊して作業環境を著しく悪くするので、細塵排出のために設けられている吸引ファンの能力強化とそれによる装置の吸引排風状態を適切に保たない限り、細塵飛散浮遊に起因する作業環境悪化の問題を解消することはできず、従来のこの種装置にあっては、現実的にその問題を解決することは不可能であった。 As disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 10-52162, the fine grain is separated upward from the grain by forming a fluidized bed by ventilating the sorted grain layer upward from below. It blows up and discharges, and the grain to be sorted together with residual fine dust is discharged from the fluidized bed sorting section, so that fine dust is scattered and floated around the equipment by the compressed air blown to the fluidized bed sorting section. If the capacity of the suction fan provided for fine dust discharge is strengthened and the suction / exhaust state of the device is not properly maintained, the work environment will deteriorate due to fine dust scattering and floating. However, it has been impossible to solve the problem practically with this type of conventional apparatus.

すなわち、この種の装置においては、吸引ファンによる吸引能力（負圧状態）が圧風による流動層選別に密接に関わるので、細塵飛散を防止するため吸引ファンの吸引能力を増強すると流動層選別の選別状態を大きく変乱させることが避けられず、殊に、細塵飛散防止のうえから吸引ファンの吸引能力を高く設定すると、細塵の除去とその飛散浮遊防止効果は良好であっても、藁屑や草木類のように穀粒の層に絡み付くように混在する粗大異物は多くが選別除去されないままとなる。 That is, in this type of device, the suction capacity (negative pressure state) by the suction fan is closely related to the fluidized bed sorting by the compressed air, so if the suction fan's suction capacity is increased to prevent fine dust scattering, the fluidized bed sorting It is unavoidable to greatly disturb the sorting state, especially if the suction fan's suction capacity is set high from the prevention of dust scattering, even if the dust removal and its scattering floating prevention effect are good, Most of the coarse foreign matter mixed so as to be entangled with the grain layer such as sawdust and vegetation remains unselected and removed.

そこで、本発明は、先行細塵除去処理された被選別穀物を、傾斜する多孔選別面に通気性を有する飛散防止シートで浮動状に押さえながら流下させる過程で、穀粒を透過方向にかつ粗大異物を流下方向に互いに引き離して粗大異物を分離排出する後続粗大異物除去処理をすることにより、粗大異物の選別能力に制約されることなく先行して細塵の選別除去とその飛散浮遊防止を十分に達成したうえ、粗大異物の効果的な選別除去を実現することができる穀物選別方法およびその装置を提供することを目的とするものである。 Therefore, the present invention is a process in which the grain to be sorted that has been subjected to the preceding fine dust removal treatment is allowed to flow down while being held down in a floating manner by a scattering prevention sheet having air permeability on the inclined porous sorting surface, and the grain is coarsened in the transmission direction. Subsequent coarse foreign matter removal treatment that separates and discharges foreign particles by separating them from each other in the flow direction sufficiently prevents fine dust from being separated and prevented from scattering and floating in advance without being limited by the ability to sort coarse foreign matter. It is an object of the present invention to provide a grain sorting method and apparatus capable of achieving effective sorting and removal of coarse foreign matters.

前記目的を達成するための本発明の請求項１に係る穀物の選別方法は、被選別穀物に混在する細塵および粗大異物を選別して除去する穀物選別方法であって、被選別穀物に混在する細塵を風力により選別する先行細塵除去処理と、前記先行細塵除去処理された被選別穀物を、傾斜する多孔選別面に通気性を有する飛散防止シートで浮動状に押さえながら流下させる過程で、穀粒を透過方向にかつ粗大異物を流下方向に互いに引き離して粗大異物を分離排出する後続粗大異物除去処理とによることを特徴とするものである。 In order to achieve the above object, a grain sorting method according to claim 1 of the present invention is a grain sorting method for sorting and removing fine dust and coarse foreign matter mixed in a grain to be sorted, which is mixed in a grain to be sorted. The process of allowing the fine grain to be removed to be sorted by wind force, and the grain to be sorted, which has been subjected to the process of removing the fine dust, to flow down while being held in a floating manner by a scattering prevention sheet having air permeability on the inclined porous sorting surface Thus, it is characterized by the subsequent coarse foreign matter removal process in which the grains are separated from each other in the transmission direction and the coarse foreign matters are separated from each other in the flow-down direction to separate and discharge the coarse foreign matters.

また、前記目的を達成するための本発明の請求項２に係る穀物の選別装置は、被選別穀物に混在する細塵および粗大異物を選別して除去する穀物選別装置であって、被選別穀物に混在する細塵を風力により選別する先行細塵除去処理部と、前記先行細塵除去処理部で細塵を除去された被選別穀物から粗大異物を分離排出する後続粗大異物除去処理部とで構成され、前記後続粗大異物除去処理部は、傾斜多孔選別板と、この傾斜多孔選別板の上面を覆う可撓性でかつ多孔状の飛散防止シートと、傾斜多孔選別板を振動させる加振手段とを備えて成ることを特徴とするものである。 The grain sorting apparatus according to claim 2 of the present invention for achieving the above object is a grain sorting apparatus for sorting and removing fine dust and coarse foreign matter mixed in the grain to be sorted, the grain to be sorted. A pre-fine dust removal processing unit that sorts fine dust mixed in by wind power, and a subsequent coarse particle removal processing unit that separates and discharges coarse foreign particles from the sorted grain from which fine dust has been removed by the preceding fine dust removal processing unit. The succeeding coarse foreign matter removal processing unit is composed of an inclined porous sorting plate, a flexible and porous anti-scattering sheet covering the upper surface of the inclined porous sorting plate, and an excitation means for vibrating the inclined porous sorting plate. It is characterized by comprising.

本発明の請求項２に係る穀物の選別装置においては、傾斜多孔選別板の上面を覆う飛散防止シートを、傾斜多孔選別板の傾斜上端側で固定して略全面が上下浮動可能に設けてあること、傾斜多孔選別板の上面とその上面を覆う飛散防止シートとの間に、傾斜多孔選別板の上面に飛散防止シートとの密着防止手段が施されていること、および多孔選別板を振動させる加振手段は、傾斜多孔選別板に電動加振機を取り付けて構成されていることが好適である。 In the grain sorting apparatus according to claim 2 of the present invention, the scattering prevention sheet covering the upper surface of the inclined porous sorting plate is fixed on the inclined upper end side of the inclined porous sorting plate, and the substantially entire surface is provided so that it can float up and down. In addition, between the upper surface of the inclined porous sorting plate and the anti-scattering sheet covering the upper surface, the upper surface of the inclined porous sorting plate is provided with means for preventing adhesion to the scattering preventing sheet, and the porous sorting plate is vibrated. The vibration means is preferably configured by attaching an electric vibration exciter to the inclined porous sorting plate.

本発明によれば、先行細塵除去処理された被選別穀物を、傾斜多孔選別面に通気性を有する飛散防止シートで浮動状に押さえながら流下させる過程で、穀粒を透過方向にかつ粗大異物を流下方向に互いに引き離して粗大異物を分離排出する後続粗大異物除去処理をすることにより、粗大異物の選別能力に制約されることなく先行して細塵の選別除去とその飛散浮遊防止を十分に達成したうえ、粗大異物の効果的な選別除去を実現することができる効果が得られるものである。 According to the present invention, in the process in which the grain to be sorted that has been subjected to the preceding fine dust removal process is allowed to flow down while being floated on the inclined porous sorting surface with a breathable anti-scattering sheet, the grain is allowed to flow in the transmission direction and coarse foreign matter. By separating the particles in the flow direction from each other and separating and discharging the coarse foreign matter, the subsequent coarse foreign matter removal process is sufficient to prevent and remove fine dust in advance and prevent its scattering and floating without being limited by the ability to sort coarse foreign matters. In addition, it is possible to obtain an effect capable of realizing effective sorting and removal of coarse foreign matters.

図面は本発明の一実施の形態に係る穀物選別装置を示し、図１は断面図、図２は斜視図、図３は要部の作用説明図である。 The drawings show a grain sorting apparatus according to an embodiment of the present invention. FIG. 1 is a sectional view, FIG. 2 is a perspective view, and FIG.

本発明に係る穀物選別装置１は、被選別穀物に混在する細塵を風力により選別する先行細塵除去処理部２と、先行細塵除去処理部２で細塵を除去された被選別穀物から粗大異物を分離排出する後続粗大異物除去処理部３とで構成されている。 A grain sorting device 1 according to the present invention is configured to use a fine dust removal processing unit 2 that sorts fine dust mixed in a sorted grain by wind power, and a sorted grain from which fine dust is removed by the fine dust removal processing unit 2. It is comprised with the subsequent coarse foreign material removal process part 3 which isolate | separates and discharges a coarse foreign material.

先行細塵除去処理部２は、多孔選別板４で上下に仕切ってその上部を選別室５とし、かつその下部を圧風送風室６として、圧風送風室６には圧風送風機７を備えており、選別室５および圧風送風室６により選別閉空間８が形成されている。選別室５にはその上方に連なる排塵のための吸引閉空間９が設けられており、この吸引閉空間９の上部には負圧調整室１０が形成されていて、吸引閉空間９内の空気が負圧調整室１０を経て吸引排風機１１により吸引排出されるように構成されている。負圧調整室１０内には多孔筒状フィルタ１２を設けてあってその周囲を吸引風の旋回路１３としてあり、旋回路１３の下部の塵埃吸出口１４と吸引排風機１１の吸引側は排塵ダクト１５によって連通させてある。また、多孔筒状フィルタ１２の一端（または両端）と圧風送風機７の吸引側とをダクト１６により連通させてあり、選別室５内に多孔選別板４を透過して圧風送風機７により送風される圧風の風圧を自動平衡調整されるように構成してある。負圧調整室１０の前面は開閉蓋１７により開閉できる点検窓となっている。 The preceding fine dust removal processing unit 2 is vertically divided by a perforated sorting plate 4 to form a sorting chamber 5 at its upper portion and a lower portion as a pressurized wind blowing chamber 6. The pressurized wind blowing chamber 6 includes a pressurized wind blower 7. The sorting closed space 8 is formed by the sorting chamber 5 and the compressed air blowing chamber 6. The sorting chamber 5 is provided with a suction closed space 9 for exhausting dust, and a negative pressure adjusting chamber 10 is formed in the upper portion of the suction closed space 9. The air is configured to be sucked and discharged by the suction and exhaust fan 11 through the negative pressure adjusting chamber 10. A porous cylindrical filter 12 is provided in the negative pressure adjusting chamber 10 and is surrounded by a suction air swirl circuit 13. The dust suction port 14 at the lower part of the swirl circuit 13 and the suction side of the suction air exhauster 11 are exhausted. The dust duct 15 communicates. In addition, one end (or both ends) of the porous cylindrical filter 12 and the suction side of the pressurized air blower 7 are communicated with each other by a duct 16, and the porous sorting plate 4 is transmitted through the porous sorting plate 4 and blown by the pressurized wind blower 7. The wind pressure of the compressed air to be generated is configured to be automatically balanced. The front surface of the negative pressure adjusting chamber 10 is an inspection window that can be opened and closed by an opening / closing lid 17.

多孔選別板４で仕切ってその上部に形成した選別室５は、その前面が開放状と成っていて、その開放された部分の多孔選別板４と略同高位置には前方に向かって後続粗大異物除去処理部３が設けられている。後続粗大異物除去処理部３は、傾斜する傾斜多孔選別板１８と、この傾斜多孔選別板１８の上面を覆う可撓性でかつ多孔状の飛散防止シート１９と、傾斜多孔選別板１８を振動させる加振手段２０とで構成されている。傾斜多孔選別板１８は穀粒を透過させる孔径の多孔板であって、傾斜多孔選別板１８は選別室５の多孔選別板４よりやや高い位置を基端として前方に傾斜して設けられている。したがって、選別室５と後続粗大異物除去処理部３の傾斜多孔選別板１８との境が堰２１を成している。 The sorting chamber 5 formed by partitioning with the porous sorting plate 4 at the upper part thereof has an open front surface, and the subsequent portion is coarse toward the front at a position substantially the same as the porous sorting plate 4 of the opened portion. A foreign matter removal processing unit 3 is provided. The subsequent coarse foreign matter removal processing unit 3 vibrates the inclined inclined porous sorting plate 18, the flexible and porous scattering prevention sheet 19 that covers the upper surface of the inclined porous sorting plate 18, and the inclined porous sorting plate 18. It is comprised with the vibration means 20. The inclined porous sorting plate 18 is a porous plate having a pore diameter that allows grains to pass through, and the inclined porous sorting plate 18 is provided to be inclined forward with a position slightly higher than the porous sorting plate 4 in the sorting chamber 5 as a base end. . Therefore, the boundary between the sorting chamber 5 and the inclined porous sorting plate 18 of the subsequent coarse foreign matter removal processing unit 3 forms a weir 21.

傾斜多孔選別板１８の上面を覆う飛散防止シート１９は、傾斜多孔選別板１８の傾斜上端側で固定して略全面が上下浮動可能に設けてある。飛散防止シート１９は、穀粒が透過しない孔径の通気性に富んだ多孔シートである。傾斜多孔選別板１８の上面とその上面を覆う飛散防止シート１９との間には、傾斜多孔選別板１８の上面に飛散防止シート１９との密着防止手段が施されており、図示の実施の形態では、傾斜多孔選別板１８の上面に間隔保持のための突起２２を複数適間隔に配置した構成としている。図示の実施の形態において傾斜多孔選別板１８を振動させる加振手段２０は、傾斜多孔選別板１８の裏面下端部に電動加振機２３を取り付けて構成しているが、傾斜多孔選別板１８に対する電動加振機２３の取り付位置などは必ずしも図示の態様に限るものではない。２４は穀粒流下案内樋である。傾斜多孔選別板１８はその傾斜下端側を支持脚２７により設置面に支持しており、支持脚２５の下端には設置面に対する防振部材２６を備えている。この防振部材２６は弾性ゴム、弾性樹脂、バネなど弾力性に富む部材である。傾斜多孔選別板１８の傾斜上端側を弾力支持またはヒンジ構造により取り付けた構成として（図示せず）、防振部材２６との相乗作用により傾斜多孔選別板１８全体の波動性を高めて選別効果の向上を図ることも可能である。 The anti-scattering sheet 19 covering the upper surface of the inclined porous sorting plate 18 is fixed on the inclined upper end side of the inclined porous sorting plate 18 so that substantially the entire surface can be floated up and down. The scattering prevention sheet 19 is a porous sheet rich in air permeability having a pore diameter through which grains do not permeate. Between the upper surface of the inclined porous sorting plate 18 and the anti-scattering sheet 19 covering the upper surface, a means for preventing adhesion to the anti-scattering sheet 19 is provided on the upper surface of the inclined porous sorting plate 18, and the illustrated embodiment In this case, a plurality of protrusions 22 for maintaining the interval are arranged on the upper surface of the inclined porous sorting plate 18 at appropriate intervals. In the illustrated embodiment, the vibrating means 20 for vibrating the inclined porous sorting plate 18 is configured by attaching an electric vibrator 23 to the lower end of the back surface of the inclined porous sorting plate 18. The mounting position of the electric vibrator 23 is not necessarily limited to the illustrated mode. Reference numeral 24 denotes a grain flow guide rod. The inclined porous sorting plate 18 supports the inclined lower end side on the installation surface by the support leg 27, and the support leg 25 has a vibration isolating member 26 for the installation surface at the lower end. The vibration isolation member 26 is a member having high elasticity such as elastic rubber, elastic resin, and a spring. A configuration in which the inclined upper end side of the inclined porous sorting plate 18 is attached by an elastic support or a hinge structure (not shown), and the wave performance of the inclined porous sorting plate 18 as a whole is enhanced by a synergistic action with the vibration isolating member 26, thereby improving the sorting effect. It is also possible to improve.

選別室５の上方に連なる吸引閉空間９およびその吸引閉空間９の上部に形成された負圧調整室１０の後方には、被選別穀物の投入空間２７を形成しており、２８は被選別穀物の投入口、２９は被選別穀物の流し板であって、投入口２８から投入した被選別穀物は流し板２９を流下して選別室５の多孔選別板４上に移動して選別される。被選別穀物の投入空間２７内には、吸引閉空間９と区画する隔壁３０を設けてあり、隔壁３０は吸引閉空間９の壁面との取付け部を回動可能とし、若干の角度調節も可能にしてある。 In the rear of the suction closed space 9 connected to the upper side of the sorting chamber 5 and the negative pressure adjusting chamber 10 formed in the upper portion of the suction closed space 9, an input space 27 for the selected grain is formed. A grain input port 29 is a sink plate for the selected grain, and the selected grain input from the input port 28 flows down the sink plate 29 and moves onto the porous sorting plate 4 in the sorting chamber 5 for selection. . In the input space 27 for the selected grain, a partition wall 30 is formed which is separated from the suction closed space 9. The partition wall 30 can rotate a mounting portion with the wall surface of the suction closed space 9, and can be slightly adjusted in angle. It is.

本発明に係る穀物選別装置１においては、吸引排風機１１による吸引能力を装置の周辺に細塵の飛散浮遊が生じない程度に内部の負圧状態が保たれるように調整し、圧風送風機７の圧風送風能力を選別室５における多孔選別板４上での効率のよい被選別穀物の流動層選別が行われるように調整する。 In the grain sorting apparatus 1 according to the present invention, the suction capacity of the suction exhaust fan 11 is adjusted so that the internal negative pressure is maintained to the extent that fine dust does not scatter and float around the apparatus. 7 is adjusted so that fluidized-bed sorting of the to-be-sorted grain is performed efficiently on the porous sorting plate 4 in the sorting chamber 5.

被選別穀物は被選別穀物の投入口２８から投入するが、投入された被選別穀物は被選別穀物の流し板２９を流下して、選別室５の多孔選別板４上に移行し、多孔選別板４上では圧風送風機７により下方から吹き上げる圧風により流動層を形成し、流動層上には細塵が浮上するともに、多孔選別板４上の流動層上に浮上した細塵は、吸引閉空間９内を負圧調整室１０に向かう吸引風に乗って負圧調整室１０に入り、負圧調整室１０内の旋回路１３を多孔筒状フィルタ１２の周囲を旋回しながら排塵ダクト１５を経て吸引排風機１１により排出されるとともに、その一部は圧風送風機７の吸引側にダクト１６により連通させてある多孔筒状フィルタ１２に吸引される過程で多孔筒状フィルタ１２の周面で細塵が除去されたうえ、圧風送風機７に吸引される。このため圧風送風機７の圧風送風能力は多孔筒状フィルタ１２内の負圧状態により、選別室５内に多孔選別板４を透過して圧風送風機７により送風される圧風の風圧が自動平衡調整される。このため、選別能力および細塵飛散防止の両面から良好な平衡状態を保持するように初期設定をするのみで、流動選別される被選別穀物の単位時間当たりの投入量や水分、夾雑物の混在比率あるいはその種類などの性状の変化にかかわらず、作動中の選別能力および細塵飛散防止ともに良好な状態を維持できることになる。 Grains to be sorted are fed from the grain entrance 28 for the grain to be sorted, and the grains to be sorted flow down the sink plate 29 for the grain to be sorted and move onto the porous sorting plate 4 in the sorting chamber 5 to be perforated. On the plate 4, a fluidized bed is formed by the pressurized air blown from below by the pressurized air blower 7. Fine dust floats on the fluidized bed, and fine dust that floats on the fluidized bed on the porous sorting plate 4 is sucked. A dust exhaust duct is formed while entering the negative pressure adjusting chamber 10 in the closed space 9 by taking a suction air directed toward the negative pressure adjusting chamber 10, and swirling the rotating circuit 13 in the negative pressure adjusting chamber 10 around the porous cylindrical filter 12. 15, the air is discharged by the suction exhaust fan 11, and a part of the air is sucked by the porous tubular filter 12 communicated by the duct 16 to the suction side of the compressed air blower 7. Fine dust is removed on the surface and sucked into the compressed air blower 7 It is. For this reason, the compressed air blowing capacity of the compressed air blower 7 is determined by the pressure of the compressed air blown by the compressed air blower 7 through the porous sorting plate 4 into the sorting chamber 5 due to the negative pressure state in the porous cylindrical filter 12. Automatic balancing is performed. For this reason, it is only necessary to make initial settings so as to maintain a good equilibrium state in terms of both the screening ability and the prevention of fine dust scattering. Regardless of changes in properties such as the ratio or the type, it is possible to maintain a good state in both the sorting ability during operation and the prevention of fine dust scattering.

一方、前記のように細塵が選別除去された被選別穀物は、穀粒に粗大異物が混在したままで選別室５の前面の堰２１を越えて後続粗大異物除去処理部３の傾斜多孔選別板１８上に溢流するが、後続粗大異物除去処理部３において穀粒から粗大異物が分離除去され、穀粒が収集されるとともに粗大異物が排除される。すなわち、後続粗大異物除去処理部３の傾斜多孔選別板１８の傾斜基端側に溢流した被選別穀物は穀粒は傾斜多孔選別板１８の傾斜下方に流下する過程で穀粒は傾斜多孔選別板１８を透過し、傾斜多孔選別板１８の上面に残る粗大異物は傾斜下方に移動して傾斜下端から排除される。 On the other hand, the to-be-sorted grain from which fine dust has been sorted and removed as described above passes through the weir 21 on the front surface of the sorting chamber 5 while coarse foreign matters are mixed in the grain, and the inclined porous sorting of the subsequent coarse foreign matter removal processing unit 3 is performed. Overflowing on the plate 18, coarse foreign matter is separated and removed from the grain in the subsequent coarse foreign matter removal processing unit 3, and the grain is collected and coarse foreign matter is removed. That is, the grain to be sorted overflowed to the inclined base end side of the inclined porous sorting plate 18 of the subsequent coarse foreign matter removal processing unit 3 and the grain is subjected to the inclined porous sorting in the process of flowing down below the inclined porous sorting plate 18. Coarse foreign matter that passes through the plate 18 and remains on the upper surface of the inclined porous sorting plate 18 moves downward and is removed from the lower end of the inclination.

本発明に係る穀物選別装置１の後続粗大異物除去処理部３は、傾斜多孔選別板１８の上面を覆う可撓性でかつ多孔状の飛散防止シート１９を備えており、この飛散防止シート１９はその上端縁を固定して略全面にわたって上下浮動可能に設けてあるとともに、傾斜多孔選別板１８は加振手段２０である電動加振機２３により振動が与えられるので、堰２１を越えて波打つように傾斜多孔選別板１８の上面に溢流する被選別穀物の波動運動との相乗作用により、傾斜多孔選別板１８の上面を覆う飛散防止シート１９がはためく作動を繰り返して被選別穀物を叩き付ける作用をするが、粗大異物に比べて硬度の高い穀粒により強い力が作用するので、穀粒と粗大異物との絡まりがほぐされて、傾斜多孔選別板１８からの穀粒の透過を円滑にするとともに、傾斜多孔選別板１８の上面での粗大異物の傾斜方向への移動を促進させる。そしてこの作用は、穀粒を透過方向にかつ粗大異物を流下方向に互いに異なる方向に引き離して粗大異物を分離排出することとなるので、後続粗大異物除去処理部３における被選別穀物のいっそう高い選別効果を得ることができる。 The subsequent coarse foreign matter removal processing unit 3 of the grain sorting apparatus 1 according to the present invention includes a flexible and porous scattering prevention sheet 19 that covers the upper surface of the inclined porous sorting plate 18. The upper edge is fixed and provided so as to be able to float up and down over substantially the entire surface, and the inclined porous sorting plate 18 is vibrated by the electric vibrator 23 which is the vibration means 20, so that it will wave over the weir 21. In addition, due to the synergistic effect with the wave motion of the grain to be sorted overflowing the upper surface of the inclined porous sorting plate 18, the scattering prevention sheet 19 covering the upper surface of the tilted porous sorting plate 18 repeats the operation of flapping and hits the grain to be sorted. However, since a stronger force acts on the harder grain than the coarse foreign matter, the entanglement between the grain and the coarse foreign matter is loosened and the permeation of the grain from the inclined porous sorting plate 18 is smoothed. Moni, to promote the movement in the inclination direction of the coarse foreign matter on the upper surface of the inclined perforated sorting plate 18. This action separates and discharges the coarse foreign matter by separating the grain in the permeation direction and the coarse foreign matter in different directions in the flow-down direction, so that the higher selection of the selected grain in the subsequent coarse foreign matter removal processing unit 3 is performed. An effect can be obtained.

図示の実施の形態においては、傾斜多孔選別板１８の上面の突起２２による傾斜多孔選別板１８の上面と飛散防止シート１９との密着防止手段が施されているとともに、飛散防止シート１９は多孔状で通気を妨げないから、先行細塵除去処理部２の選別室５内の負圧による傾斜多孔選別板１８の上面と飛散防止シート１９との間の吸気作用に起因して傾斜多孔選別板１８の上面に飛散防止シート１９が密着することがなく、被選別穀物の選別が妨げられることがない。そのうえ、多孔状の飛散防止シート１９を通して生じる吸気作用によって周辺に浮遊する細塵が選別室５内に吸引されるので、細塵の飛散浮遊防止効果を期待することができる。 In the illustrated embodiment, a means for preventing adhesion between the upper surface of the inclined porous sorting plate 18 and the scattering prevention sheet 19 is provided by the protrusions 22 on the upper surface of the inclined porous sorting plate 18, and the scattering prevention sheet 19 is porous. Therefore, the inclined porous sorting plate 18 is caused by the suction action between the upper surface of the inclined porous sorting plate 18 and the anti-scattering sheet 19 due to the negative pressure in the sorting chamber 5 of the preceding fine dust removal processing unit 2. The anti-scattering sheet 19 is not in close contact with the upper surface, and the selection of the to-be-sorted grains is not prevented. In addition, since fine dust floating around is sucked into the sorting chamber 5 by the intake action generated through the porous scattering prevention sheet 19, it is possible to expect the effect of preventing fine dust from scattering and floating.

本発明の一実施の形態に係る穀物選別装置の断面図である。1 is a cross-sectional view of a grain sorting device according to an embodiment of the present invention. 同上全体斜視図である。It is a whole perspective view same as the above. 同上要部の作用説明図である。It is operation | movement explanatory drawing of a principal part same as the above.

符号の説明Explanation of symbols

１穀物選別装置
２先行細塵除去処理部
３後続粗大異物除去処理部
４多孔選別板
５選別室
６圧風送風室
７圧風送風機
８選別閉空間
９吸引閉空間
１０負圧調整室
１１吸引排風機
１２多孔筒状フィルタ
１３旋回路
１４塵埃吸出口
１５排塵ダクト
１６ダクト
１７開閉蓋
１８傾斜多孔選別板
１９飛散防止シート
２０加振手段
２１堰
２２突起
２３電動加振機
２４穀粒流下案内樋
２５支持脚
２６防振部材
２７投入空間
２８被選別穀物の投入口
２９被選別穀物の流し板
３０隔壁

DESCRIPTION OF SYMBOLS 1 Grain sorter 2 Leading fine dust removal processing part 3 Subsequent coarse foreign matter removal processing part 4 Porous sorting plate 5 Sorting chamber 6 Pressurized air blower chamber 7 Pressurized air blower 8 Sorting closed space 9 Suction closed space 10 Negative pressure adjusting chamber 11 Suction discharge Air blower 12 Porous cylindrical filter 13 Rotating circuit 14 Dust suction port 15 Dust exhaust duct 16 Duct 17 Opening / closing lid 18 Inclined porous sorting plate 19 Anti-scattering sheet 20 Exciting means 21 Weir 22 Protrusion 23 Electric vibrator 24 Grain flow guide rod 25 Support Legs 26 Anti-Vibration Member 27 Input Space 28 Input Port for Sorted Grain 29 Sink Plate for Sorted Grain 30 Bulkhead

Claims

被選別穀物に混在する細塵および粗大異物を選別して除去する穀物選別方法であって、
被選別穀物に混在する細塵を風力により選別する先行細塵除去処理と、
前記先行細塵除去処理された被選別穀物を、傾斜する多孔選別面に通気性を有する飛散防止シートで浮動状に押さえながら流下させる過程で、穀粒を透過方向にかつ粗大異物を流下方向に互いに引き離して粗大異物を分離排出する後続粗大異物除去処理とによる
ことを特徴とする穀物選別方法。 A grain sorting method for sorting and removing fine dust and coarse foreign matter mixed in the grain to be sorted,
Prior fine dust removal processing that sorts fine dust mixed in to-be-sorted grains by wind,
In the process of allowing the grain to be sorted, which has been subjected to the preceding fine dust removal treatment, to flow down while holding it in a floating manner with a breathable anti-scattering sheet on the inclined porous sorting surface, the grain is in the permeation direction and the coarse foreign matter is in the flow direction. A grain sorting method characterized by a subsequent coarse foreign matter removal process that separates and discharges coarse foreign matters separated from each other.

被選別穀物に混在する細塵および粗大異物を選別して除去する穀物選別装置であって、
被選別穀物に混在する細塵を風力により選別する先行細塵除去処理部と、
前記先行細塵除去処理部で細塵を除去された被選別穀物から粗大異物を分離排出する後続粗大異物除去処理部とで構成され、
前記後続粗大異物除去処理部は、傾斜多孔選別板と、この傾斜多孔選別板の上面を覆う可撓性でかつ多孔状の飛散防止シートと、傾斜多孔選別板を振動させる加振手段とを備えて成る
ことを特徴とする穀物選別装置。 A grain sorting device that sorts and removes fine dust and coarse foreign matter mixed in the grain to be sorted,
A pre-fine dust removal processing unit that sorts fine dust mixed in the grain to be sorted by wind power;
It is composed of a subsequent coarse foreign matter removal processing unit that separates and discharges coarse foreign matter from the selected grain from which fine dust has been removed by the preceding fine dust removal treatment unit,
The subsequent coarse foreign matter removal processing unit includes an inclined porous sorting plate, a flexible and porous scattering prevention sheet covering the upper surface of the inclined porous sorting plate, and a vibration means for vibrating the inclined porous sorting plate. Grain sorting device characterized by comprising.

傾斜多孔選別板の上面を覆う飛散防止シートは、傾斜多孔選別板の傾斜上端側で固定して略全面が上下浮動可能に設けてあることを特徴とする請求項２記載の穀物選別装置。 3. The grain sorting apparatus according to claim 2, wherein the anti-scattering sheet covering the upper surface of the inclined porous sorting plate is fixed at the upper end of the inclined porous sorting plate so that substantially the entire surface can be floated up and down.

傾斜多孔選別板の上面とその上面を覆う飛散防止シートとの間には、傾斜多孔選別板の上面に飛散防止シートとの密着防止手段が施されていることを特徴とする請求項２記載の穀物選別装置。 The contact prevention means with a scattering prevention sheet is given to the upper surface of an inclined porous sorting board between the upper surface of an inclined porous sorting board and the scattering prevention sheet which covers the upper surface of Claim 2 characterized by the above-mentioned. Grain sorting device.

傾斜多孔選別板を振動させる加振手段は、傾斜多孔選別板に電動加振機を取り付けて構成されていることを特徴とする請求項２記載の穀物選別装置。

3. The grain sorting apparatus according to claim 2, wherein the vibrating means for vibrating the inclined porous sorting plate is configured by attaching an electric shaker to the inclined porous sorting plate.