【０００１】
【発明の属する技術分野】
この発明は、インペラ形態の脱ぷ機を備えた脱ぷ処理機の風選装置に関する。
【０００２】
【従来の技術】
従来、インペラ形態とした脱ぷ処理機によって主風選部で混合米、粃、籾殻に選別分離する構成がある（例えば特許文献１）。
上記の構成は、横軸回転のインペラ型脱ぷ部を機体の前方側部に設け、インペラに接続した揚穀筒の上端は、横向きに変向されて摺落米拡散室なる空間部に供給され、この拡散室からその下方にあって吸引ファンの作用を受けて風選する風選部に落下供給させる形態としている。
【０００３】
【特許文献１】特開２００３−１９９４０号公報
【０００４】
【発明が解決しようとする課題】
ところが、上記の摺落米拡散室では、揚穀筒の上端からの噴出風の影響で脱ぷ粒の損傷を引き起こす恐れがある。すなわち、脱ぷ米は拡散室内でその側壁に衝突して落下し特に玄米にとっては損傷を引き起こすものとなる。
そこで、この発明は、上記拡散室の改良をはかり、当該拡散室内での補助選別を可能となして風選処理の精度向上を図るものである。
【０００５】
【課題を解決するための手段】
上記目的を達成するため、請求項１の発明は、インペラを有する脱ぷ部と、この脱ぷ部１からの脱ぷ米を受けて籾・玄米の混合米と籾殻・粃とに分離選別する補助風選部と、この補助風選部から下方の主風選部に籾・玄米の混合米と籾殻・粃とを供給すべく構成した脱ぷ処理機において、補助風選部には、脱ぷ米の噴出方向に堰止板を設け、この堰止板を越える籾殻や粃と、この堰止板に当って下方に案内される籾・玄米の混合米とに分離選別すべく構成し、これらを主風選部に連通口を経由して落下させるよう構成した。
これによって、補助風選部では、堰止板によって気流に伴う移動を阻止された玄米、籾の混合米と、比較的軽いため気流に伴い堰止板を越えて移動する籾殻、粃と分離される。分離された混合米は連通口を経由して下方の主選別部に落下し、一方籾殻や粃も連通口から主選別部に落下するものとなる。連通口の位置を異ならせることにより、大まかな選別がなされた状態で主選別部に落下するものとなり、この主風選部での選別制御、あるいは風量、時間的な面での選別負荷を軽減できる。
請求項２に記載の発明は、上記において、主風選部の吸引ファンに連通する排塵胴に通じて補助選別部内の風を排出すべく構成した。よって過剰の選別風を伴わず所期の選別を実行できる。
【０００６】
【発明の効果】
請求項１に記載の発明では、主選別部に落下する前に補助選別部で粗選別を行うため、主選別部における風選別を２次的に行えばよく選別精度を確保しながら各種制御や風量確保、選別時間等の制約を軽減し、結局選別負荷を軽減する。
請求項２に記載の発明によると、過剰の選別風を伴わないため補助風選部での所期の選別を実行できる。
【０００７】
【発明の実施の形態】
以下、図面に示すこの発明の実施の形態について説明する。先ず、図１により籾摺選別機の全体構成について説明する。この籾摺選別機は、脱ぷ部１、摺落米を風選別する風選部として補助風選部２及び主風選部３、風選後の混合米を籾ぷ玄米に分離選別する混合米選別部４、混合米揚穀機５，玄米揚穀機６等により構成されている。
脱ぷ部１は、インペラ式であって、摺落米風選箱体７の前側面部に設けられていて、籾ホッパ８、籾供給筒９、脱ぷケース１０、脱ぷケース１０に軸架した脱ぷ軸１１、該脱ぷ軸１１に取り付けられているインペラ１２，１２…、摺落米を上記補助風選部２に移送供給する脱ぷ米供給筒１３等により構成されている。
しかして、籾ホッパ８に供給された籾粒は、籾供給筒９を経て側方から脱ぷケース１０内のインペラ１２，１２…の中心部に供給され、回転しているこのインペラ１２，１２…の遠心力により外周側に流動し、周辺屈曲部で急激に方向変換して脱ぷケース１０のライニングに衝突して脱ぷされ、脱ぷ米供給筒１３を経て補助風選部２に移送供給される。
上記補助風選部２には、上記脱ぷ米供給筒１３の移送終端部１３ａを水平方向となし排出口１３ｂの延長部には湾曲壁面１４ａを呈する脱ぷ米受部１４、この湾曲壁面１４ａの延長方向に適宜間隔離れた位置にあって玄米と籾とを堰き止めて下方に案内する堰止板１５、補助風選部２の構成壁部のうち前壁部２ａと、主風選部３の選別風を起こす吸引ファン１６の排塵筒１７の途中とを接続する接続風路１８を設けてなる。
インペラ１２，１２…の回転に伴う起風は、脱ぷ米を上昇搬送することができる。更に脱ぷ米は補助風選部２に入るが、湾曲壁面１４ａに沿って移行しながらその風の一部は接続風路１８から抜けようとする。このため湾曲壁面１４ａの終端部から接続風路１８の間に風選部が形成される。即ち、風選部途中の上記堰止板１５へ衝突する脱ぷ米は籾・玄米は主として下方に落下し連通口１９から主風選部３に入る。一方軽い粃・籾殻等は堰止板１５の上端を越えて上記連通口１９とは異なり主風選部の風選流路の下手側に位置する連通口２０から当該主風選部３に入る構成である。２１はさばき棚である。
次に、主風選部３について説明する。摺落米風選箱体７内には後側から前側に選別風の流れる風選路２２を斜めに形成し、上記補助風選部２を経た脱ぷ米、粃・籾殻は前後の連通口１９，２０から風選路２２に落下する。風選路２２の後側下部には、籾玄米の混合米受樋２３を設け、中途部下方には粃受樋２４を設け、風選路２２の前側端部に前記吸引ファン１６の吸引部を接続する。
しかして、籾摺部１により籾摺りされた摺落米は脱ぷ米供給筒１３、補助風選部２経て風選路２２に落下、供給され、軽い籾殻類は風選路２２の終端側に流れ、吸引ファン１６、排塵筒１７を経て機外に排出され、比較的重い粃類は中途部下方の粃受樋２４に落下選別され、また、重い籾・玄米の混合米は混合米受樋２３に落下選別される。
そして、上記混合米はスロワ形態の混合米揚穀機５を経て、回転選別筒型の混合米選別部４に送られ、籾・玄米に分離選別される。
次に、混合米選別部４について説明する。内周面に多数の壷孔を形成した選別筒３０を一定方向に回転すべく構成する。３１は仕上げ米移送螺旋樋で、壷孔で捕捉した玄米を回収し、機体前方に移送すべく構成する。この仕上げ米移送螺旋樋３１の移送終端部を流下樋３２にのぞませ、該流下樋３２を流下した玄米は仕上げ米風選部３３を経由して仕上げ米螺旋樋３４に落下し、横送りされて該螺旋樋３４に接続したスロワ形態の玄米揚穀部６によって機外に取り出されるよう構成している。
なお、前記混合米揚穀機５による混合米は、仕上げ米移送螺旋樋３１と平行に配設された混合米移送樋（図示せず）によって選別始端側の供給筒３５から選別筒３０内部に供給すべく構成している。
【０００８】
また、籾及び壷穴に捕捉されない玄米一部の所謂還元米は、選別筒３０終端部から排出され還元米移送螺旋樋３６、スロワ形態の還元米揚穀部３７を経て籾ホッパ８に還元される構成である。
上例の作用について説明する。籾ホッパ８から籾を脱ぷ部１に供給すると、この脱ぷ部１ではインペラ１２，１２…回転に伴って脱ぷされると共に、インペラ１２，１２…の回転で生じた風圧で脱ぷ米は脱ぷ米供給筒１３を経由して補助風選部２に達する。ここでは、水平方向に送られて湾曲壁面１４ａに突き当たった脱ぷ米がこの湾曲面に沿って移動することにより、方向変換し途中に設ける堰止板１５を越える比重の軽い籾殻・粃群と、該堰止板１５を越え得ない籾・玄米の混合米群とに別れ、夫々下方の連通口１９及び２０から主風選部３に入る。
【０００９】
なお、上記補助風選部２では、接続風路１８によって補助風選部２内の起風の一部は排塵胴１７側に抜ける構成であるから、過剰の風圧が作用しないため、堰止板１５の作用とあいまって、適正な風選を行なうことができる。
主風選部３では籾玄米の混合米中に混在する籾殻・粃や藁屑が再度風選され、混合米は混合米受樋２３に回収され、籾殻・粃は連通口２０から落下する籾殻・粃群とともに主風選部３では、粃は粃受樋２４に受けられて適宜に機外に排出され、一方籾殻は吸引ファン１６を経由して排塵胴１７を経て機外に取り出される。
【００１０】
図６は補助風選部の異なる例を示すものである。上記の実施例における堰止板１５を目抜き鉄板製の第１の堰止板３８で構成している。さらにこの堰止板３８の前側には第２の堰止板３９を立設した構成である。もって第１と第２の堰止板３８及び３９との間は、堰止板３８を抜けてくる風が該堰止板３８と堰止板３９との間から下方に落下しようとする粃を浮上させ得て第２の堰止板３９を超えて下方に落下するものとなる。また、第１の堰止板３８を越えても籾・玄米は更に堰止板３９を越えることなく所定の連通口１９にて主風選部３に落下するもので、２つの堰止板３８，３９を設ける結果、籾・玄米群と籾殻・粃群との分離を精度良いものとする。なお、共通構成は図２と同じ符号で示している。
【００１１】
前記粃受樋２４について、該受樋２４には移送螺旋２４ａを備え、該受樋２４の一端部には粃還元部４０を接続構成している。該粃還元部４０はスロワ形態に設けられ、粃を籾ホッパ８に還元することを目的とするが、本実施例では以下の構成としている。すなわち、粃還元部４０の揚上筒４０ａの上部に逆Ｕ状の接続筒４０ｂを該揚上筒４０ａに対して回動自在に嵌合し、該接続筒４０ｂの排出部を上記還元米揚穀部３７に設けた補助受ホッパ４１にのぞむ位置と、適宜機外に排出すべく回収袋４２等にのぞむ位置とに切替える構成としている。
【００１２】
従って、従来専用の粃還元揚穀筒を設けていたものに比較して、還元経路を必然的に設ける混合米選別部の還元米揚穀部３７に、粃還元部４０の揚上筒４０ａを連通可能としたものであるから、揚上筒４０ａの高さを低く構成でき、籾ホッパ近傍の点検メンテナンスの際に邪魔とならない。
【００１３】
なお、図６は粃還元部４０の還元米揚穀部３７途中を、吸引ファン１６に接続した例を示したものである。粃はその用途に応じて必要であり、または不要の場合には廃棄処分を行うが、この粃を回収の必要のないときは、上記還元米揚穀途中に設けた切替弁４３の切替変更によって、籾ホッパ部へ還元し、又は廃棄処分の際には切替弁４３によって廃棄通路４４を形成する廃棄筒４５に連通状態とさせるものである。
【００１４】
従来粃還元部４０は籾ホッパに還元するか、または機外に取出すかを選択すべく上端にある排出筒を縦軸心回りに回動させる形態であったため、廃棄処分には処理工数がかかるものであったが、上記のように、吸引ファンに通じる廃棄筒を接続し分岐部には切替弁を配設することによって、籾殻や塵埃類とともに一挙に機外に排出できて効率的である。
【００１５】
図７は、前記仕上げ米回収螺旋樋３４における処理の精度向上を図るものである。すなわち、従来この仕上げ米回収螺旋樋３４の送り螺旋３４ａの回転に伴って接線方向に穀粒（仕上げ米）が飛散する。このため、該飛散した穀粒が、元来仕上げ米中に混在する塵埃類を風選除去すべく設けられた仕上げファン４６のファン胴４７に飛散し、ひいては外気導入口部から仕上げ米が飛散落下する欠点があった。そこで、図８に示すように、上記送り螺旋３４ａから仕上げファン４６に至る通路部に、通気可能で穀粒飛散を防止する邪魔板４８又は４９を設けている。すなわち、図８（ａ）では、邪魔板４８として、断面く型に成形したパンチングメタルを上記通路部において送り螺旋３４ａの外周を囲うように設けるもので、送り螺旋３４ａの回転（イ）に伴って飛散する仕上げ米の一部を反射して移送樋３４から飛散するのを防止する。なお、このとき仕上げファン４６からの噴風は邪魔板４８の目抜きを通して仕上げ米に作用するものである。一方の図８（ｂ）に示す邪魔板４９は、邪魔板４８と同じ素材をもって形成されるが、送り螺旋３４ａの回転から遠い側の一部を欠如した形態となって、主として穀粒飛散は上面のパンチングメタルでまかない、仕上げファン４６からの起風流通はこの欠如部４９ａで行われることとなる。
【００１６】
上記のような邪魔板を設けると、所定時間（５分間あたり）、従来数１０粒の飛散であったものが、０〜４粒（同上）となって格段に相違が見られた。
【図面の簡単な説明】
【図１】脱ぷ選別機の全体切断図。
【図２】要部の側断面図。
【図３】別実施例を示す要部の側断面図。
【図４】粃還元部の斜視図。
【図５】その背面図。
【図６】粃還元部の異なる例を示す断面図
【図７】仕上げ米風選部の断面図。
【図８】（ａ）（ｂ）は邪魔板の例を示す斜視図である。
【符号の説明】
１…脱ぷ部、２…補助選別部、３…主風選部、１２…インペラ、１３…脱ぷ米供給筒、１４ａ…湾曲壁面、１５…堰止板、１９・２０…連通口[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air separation device for a screw processing machine equipped with an impeller-type screw cutter.
[0002]
[Prior art]
BACKGROUND ART Conventionally, there is a configuration in which mixed rice, pity, and rice husk are separated and separated in a main wind selection unit by a dewatering treatment machine in the form of an impeller (for example, Patent Document 1).
In the above configuration, the impeller-type protruding portion that rotates in the horizontal axis is provided on the front side of the fuselage, and the upper end of the milling cylinder connected to the impeller is diverted horizontally and supplied to the space that is the scattered rice diffusion chamber. Then, the air is dropped from the diffusion chamber to a wind selection unit which is located below and is subjected to the action of the suction fan to select the air.
[0003]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2003-19940
[Problems to be solved by the invention]
However, in the above-mentioned sliding rice diffusion chamber, there is a possibility that damage to the crushed grains may be caused by the effect of the wind blown out from the upper end of the milling cylinder. That is, the crushed rice collides with the side wall in the diffusion chamber and falls, causing damage especially to brown rice.
In view of the above, the present invention aims to improve the diffusion chamber, to enable auxiliary sorting in the diffusion chamber, and to improve the accuracy of the wind selection process.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is to separate and sort into mixed rice of chaff / brown rice and chaff / pity after receiving a milling unit having an impeller and milling rice from the milling unit 1. In the auxiliary wind selection unit and the dewatering processing machine configured to supply the mixed rice of rice and brown rice and the rice husk and pity to the main wind selection unit below this auxiliary wind selection unit,ぷ A dam plate is provided in the direction of rice spouting, and rice husks and pity crossing the dam plate and mixed rice of paddy and brown rice guided downward by hitting the dam plate are separated and sorted. These were dropped into the main wind selection unit via the communication port.
As a result, in the auxiliary wind selection unit, brown rice and mixed rice of paddy that were prevented from moving with the airflow by the baffle plate, and rice hulls that move over the baffle plate with the airflow because they are relatively light, pity are separated. You. The separated mixed rice falls to the main sorting section below through the communication port, while rice husk and pity fall from the communication port to the main sorting section. By changing the position of the communication port, it will fall to the main sorting section with rough sorting performed, reducing the sorting control in this main wind sorting section, or reducing the sorting load in terms of air volume and time it can.
The second aspect of the present invention is configured such that the wind in the auxiliary sorting unit is discharged through the dust discharging cylinder communicating with the suction fan of the main wind selecting unit. Therefore, desired sorting can be performed without excessive sorting wind.
[0006]
【The invention's effect】
According to the first aspect of the present invention, the coarse sorting is performed by the auxiliary sorting unit before falling to the main sorting unit. Restrictions such as securing air volume and sorting time are reduced, eventually reducing sorting load.
According to the second aspect of the present invention, the desired sorting in the auxiliary wind selecting unit can be executed because no excessive sorting wind is involved.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention shown in the drawings will be described. First, the overall configuration of the hulling sorter will be described with reference to FIG. This rice hulling sorter has a dewatering unit 1, an auxiliary air selection unit 2 and a main air selection unit 3 as a wind selection unit for air-sorting the smashed rice, and a mixing for separating and sorting the mixed rice after the wind selection into rice-brown rice. It comprises a rice sorting section 4, a mixed rice frying machine 5, a brown rice frying machine 6, and the like.
The removal unit 1 is of an impeller type and is provided on the front side of the crushed rice-style selection box 7. The removal unit 1 has a paddle hopper 8, a rice supply cylinder 9, a removal case 10, and a removal case 10. It is composed of a detached shaft 11 mounted thereon, impellers 12, 12... Attached to the detached shaft 11, a detached rice supply cylinder 13 for transferring and moving the smashed rice to the auxiliary wind selection unit 2, and the like.
The rice grains supplied to the rice hopper 8 are supplied from the side to the center of the impellers 12, 12,... In the removal case 10 via the rice supply cylinder 9, and the rotating impellers 12, 12,. Flow to the outer peripheral side due to the centrifugal force of ..., suddenly change the direction at the peripheral bent portion, hit the lining of the escape case 10 and escape, and transfer to the auxiliary wind selection unit 2 through the escape rice supply cylinder 13 Supplied.
The auxiliary wind selection unit 2 has a transfer end portion 13a of the rice-removing rice supply cylinder 13 in the horizontal direction, and a rice-removing rice receiving portion 14 having a curved wall surface 14a at an extension of the discharge port 13b. Plate 15 which is located at a position appropriately spaced apart in the direction of extension of rice to guide brown rice and paddy and guide it downward, the front wall 2a of the constituent walls of the auxiliary wind selector 2, and the main wind selector A connection air path 18 is provided to connect the suction fan 16 which generates the sorting wind of No. 3 to the middle of the dust discharge tube 17 of the suction fan 16.
The wind generated by the rotation of the impellers 12, 12,... Can carry up the rice removal. Further, although the rice leaves the auxiliary wind selection unit 2, a part of the wind tends to escape from the connection air passage 18 while moving along the curved wall surface 14a. For this reason, an air selection part is formed between the terminal end of the curved wall surface 14a and the connection air passage 18. In other words, when the rice is crushed and hits the baffle plate 15 in the middle of the wind selection unit, the rice and brown rice mainly fall downward and enter the main wind selection unit 3 through the communication port 19. On the other hand, light pity, rice hulls and the like enter the main wind selection unit 3 from the communication port 20 located on the lower side of the wind selection channel of the main wind selection unit unlike the communication port 19, unlike the communication port 19 above the upper end of the baffle plate 15. Configuration. 21 is a judgment shelf.
Next, the main wind selection unit 3 will be described. In the sliding rice-style selection box 7, a wind selection path 22 in which the sorting wind flows is formed diagonally from the rear side to the front side, and the removal of rice, pity and chaff through the auxiliary wind selection section 2 are front and rear communication ports. From 19 and 20, it falls to the wind selection path 22. A mixed rice receiving gutter 23 of paddy brown rice is provided in the lower rear part of the wind selection path 22, a pity receiving gutter 24 is provided in the lower part of the middle part, and a suction part of the suction fan 16 is provided at a front end of the wind selection path 22. Connect.
Thus, the rice that has been hulled by the rice hulling unit 1 is dropped and supplied to the wind selection path 22 via the rice removal rice supply cylinder 13 and the auxiliary wind selection unit 2, and light rice husks are located at the end side of the wind selection path 22. The water is discharged through the suction fan 16 and the exhaust pipe 17 to the outside of the machine. The relatively heavy pity is dropped and sorted into the pity receiving gutter 24 below the middle part, and the heavy paddy / brown rice mixed rice is mixed rice receiving. The drop is sorted by the gutter 23.
Then, the mixed rice is sent through a mixed rice frying machine 5 in the form of a thrower to a rotary rice sorting mixed rice sorting section 4 where it is separated and sorted into paddy and brown rice.
Next, the mixed rice sorting section 4 will be described. The sorting cylinder 30 having a large number of pot holes formed on the inner peripheral surface is configured to rotate in a certain direction. Numeral 31 denotes a spiral trough for transferring finished rice, which collects brown rice caught in the pot hole and transfers it to the front of the fuselage. The transfer end of the finished rice transfer spiral gutter 31 is viewed from the downflow gutter 32, and the brown rice that has flowed down the downflow gutter 32 falls to the finished rice spiral gutter 34 via the finished rice wind selection unit 33 and is fed sideways. Then, it is configured to be taken out of the machine by a brown rice frying unit 6 in the form of a thrower connected to the spiral gutter 34.
The mixed rice by the mixed rice fryer 5 is fed into the sorting cylinder 30 from the supply cylinder 35 on the sorting start side by a mixed rice transport gutter (not shown) arranged in parallel with the finished rice transport spiral gutter 31. It is configured to supply.
[0008]
In addition, the so-called reduced rice which is not caught in the paddy and the pot hole is partly discharged from the end of the sorting cylinder 30 and returned to the rice hopper 8 through the reduced rice transfer spiral gutter 36 and the reduced rice raising unit 37 in the form of a thrower. Configuration.
The operation of the above example will be described. When the paddy is supplied from the paddle hopper 8 to the evacuation unit 1, the evacuation unit 1 removes the rice with the rotation of the impellers 12, 12, and removes the rice with the wind pressure generated by the rotation of the impellers 12, 12. Reaches the auxiliary wind selection section 2 via the rice removal cylinder 13. Here, the rice crushed rice that has been sent in the horizontal direction and hits the curved wall surface 14a moves along this curved surface, thereby changing its direction and crossing the dam plate 15 provided in the middle, and has a low relative density of rice chaff and pity group. Then, the rice is separated into a mixed rice group of paddy / brown rice which cannot cross the dam plate 15 and enters the main wind selection unit 3 from the lower communication ports 19 and 20, respectively.
[0009]
In the auxiliary wind selection unit 2, part of the wind generated in the auxiliary wind selection unit 2 passes through the connecting air passage 18 to the dust discharge cylinder 17 side. Combined with the operation of the plate 15, appropriate wind selection can be performed.
In the main wind selection unit 3, rice husks, pity and straw waste mixed in the mixed rice of the unpolished rice are selected again by wind, the mixed rice is collected in the mixed rice receiving gutter 23, and the rice husks and pity fall from the communication port 20 are rice husks. In the main wind selection unit 3 together with the pity group, the pity is received by the pity receiving trough 24 and is discharged out of the machine as appropriate, while the rice husk is taken out of the machine via the suction fan 16 through the dust canister 17. .
[0010]
FIG. 6 shows a different example of the auxiliary wind selection unit. The blocking plate 15 in the above embodiment is constituted by a first blocking plate 38 made of a punched iron plate. Further, a second blocking plate 39 is provided upright on the front side of the blocking plate 38. Thus, between the first and second blocking plates 38 and 39, pity that the wind passing through the blocking plate 38 tries to fall downward from between the blocking plate 38 and the blocking plate 39 It can be lifted and falls downward beyond the second dam plate 39. Further, even if the paddy rice and the brown rice pass over the first blocking plate 38, they fall into the main air selection section 3 at the predetermined communication port 19 without further passing through the blocking plate 39. , 39, the rice and brown rice group and the rice husk and pity group are separated with high accuracy. The common configuration is indicated by the same reference numeral as in FIG.
[0011]
Regarding the pity trough 24, the trough 24 is provided with a transfer spiral 24a, and a pity reduction unit 40 is connected to one end of the trough 24. The pity reduction unit 40 is provided in the form of a thrower, and aims to reduce pity to the rice hopper 8. In this embodiment, the configuration is as follows. That is, an inverted U-shaped connection tube 40b is rotatably fitted to the upper portion of the lifting tube 40a of the pity reduction unit 40 with respect to the lifting tube 40a, and the discharge portion of the connection tube 40b is connected to the above-described reduced rice lifting device. The configuration is such that the position is switched between a position in which the auxiliary receiving hopper 41 provided in the grain section 37 is desired and a position in which the user is desirably discharged to the collection bag 42 or the like so as to be discharged out of the machine.
[0012]
Therefore, as compared with the case where the conventional dedicated pity reduction fructing cylinder is provided, the lifting cylinder 40a of the pity reduction unit 40 is provided in the reduced rice frying section 37 of the mixed rice sorting section necessarily providing the return path. Since the communication is enabled, the height of the lifting cylinder 40a can be reduced, and does not hinder the inspection and maintenance in the vicinity of the paddy hopper.
[0013]
FIG. 6 shows an example in which a portion of the reduced rice-frying unit 37 of the pity reduction unit 40 is connected to the suction fan 16. Pity is necessary depending on its use, or if it is unnecessary, it is discarded. When it is not necessary to collect this pity, the change of the switching valve 43 provided in the above-mentioned reduced rice fried rice is performed by changing the switching. When the waste is returned to the paddy hopper, or is disposed of, the switching valve 43 is used to bring the waste pipe 45 into communication with the waste cylinder 45 forming the waste passage 44.
[0014]
Conventionally, the pity reduction unit 40 is configured to rotate the discharge cylinder at the upper end about the vertical axis in order to select whether to return to the paddy hopper or take it out of the machine. However, as described above, by connecting the waste cylinder leading to the suction fan and arranging the switching valve at the branch part, it is possible to discharge the rice husk and dust at once to the outside of the machine, which is efficient. .
[0015]
FIG. 7 is intended to improve the precision of the processing in the finished rice collecting spiral gutter 34. That is, the grains (finished rice) are scattered in the tangential direction with the rotation of the feed spiral 34a of the finished rice recovery spiral gutter 34 conventionally. Therefore, the scattered grains are scattered to the fan body 47 of the finishing fan 46 which is provided to remove dust originally mixed in the finished rice, and the scattered rice is scattered from the outside air inlet. There was a disadvantage of falling. Therefore, as shown in FIG. 8, a baffle plate 48 or 49 is provided in the passage portion from the feed spiral 34a to the finishing fan 46 to allow ventilation and prevent grain scattering. That is, in FIG. 8A, as the baffle plate 48, a punching metal formed in a rectangular cross section is provided so as to surround the outer periphery of the feed spiral 34a in the above-mentioned passage portion, and is accompanied by the rotation (a) of the feed spiral 34a. This prevents a portion of the scattered finished rice from being reflected and scattered from the transfer gutter 34. At this time, the blast from the finishing fan 46 acts on the finished rice through the opening of the baffle plate 48. On the other hand, the baffle plate 49 shown in FIG. 8B is formed of the same material as the baffle plate 48, but has a form in which a part on the side far from the rotation of the feed spiral 34a is missing, and mainly the grain scattering is reduced. The blast circulation from the finishing fan 46, which is covered with the punching metal on the upper surface, is performed in the missing portion 49a.
[0016]
When the baffle plate as described above was provided, the conventional scattering of several tens of particles for a predetermined time (per 5 minutes) was changed to 0 to 4 (same as above), which was a remarkable difference.
[Brief description of the drawings]
FIG. 1 is an overall cutaway view of a de-sorting machine.
FIG. 2 is a side sectional view of a main part.
FIG. 3 is a side sectional view of a main part showing another embodiment.
FIG. 4 is a perspective view of a pity reduction unit.
FIG. 5 is a rear view thereof.
FIG. 6 is a cross-sectional view showing a different example of the pity reduction unit. FIG. 7 is a cross-sectional view of a finished rice style selection unit.
FIGS. 8A and 8B are perspective views showing examples of a baffle plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Removal part, 2 ... Auxiliary sorting part, 3 ... Main wind selection part, 12 ... Impeller, 13 ... Removal rice supply cylinder, 14a ... Curved wall surface, 15 ... Dam plate, 19/20 ... Communication port
