JP4439484B2 - Grinding rice milling machine - Google Patents

Grinding rice milling machine Download PDF

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JP4439484B2
JP4439484B2 JP2006099984A JP2006099984A JP4439484B2 JP 4439484 B2 JP4439484 B2 JP 4439484B2 JP 2006099984 A JP2006099984 A JP 2006099984A JP 2006099984 A JP2006099984 A JP 2006099984A JP 4439484 B2 JP4439484 B2 JP 4439484B2
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rice
milling
cylinder
grinding
roll
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JP2007268481A (en
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晴夫 森
和之 佐藤
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Yamamoto Manufacturing Co Ltd
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Description

本発明は、精米ロールを回転させて米粒を上昇させながら精米処理する研削精米機に関する。   The present invention relates to a grinding rice mill that performs rice milling while rotating rice mill rolls to raise rice grains.

一般に、精米工場では、初工程に粗仕上げ用として研削精米機、次工程に仕上げ用としての摩擦精米機が連座式に併設されている。   Generally, in a rice mill, a grinding rice mill for rough finishing is installed in the first process, and a friction rice mill for finishing is installed in the next process.

研削精米機では、精米圧力を強くかけると、玄米の表面が深く傷ついて品質が悪くなるし、また、精米ロール（砥石）が割れて故障することがある。このため、研削精米機は、弱い圧力で精米して玄米の表面に軽く傷を付け、次工程の摩擦精米機の精米作用（糠層の剥離作用）を助長する目的で使用されている。   In a grinding rice mill, if the milling pressure is applied strongly, the surface of the brown rice is deeply damaged and the quality deteriorates, and the milling roll (grinding stone) may break and break down. For this reason, the grinding rice mill is used for the purpose of promoting the milling action (peeling action of the cocoon layer) of the friction milling machine in the next process by polishing the rice with a weak pressure and slightly scratching the surface of the brown rice.

また、摩擦精米機は、精米圧力を強くかけて、玄米表面の糠層の剥離作用と白米表面の磨き作用とをするようにしてある。   Further, the friction rice mill is configured to exert a rice milling pressure on the surface of the brown rice and a polishing action on the surface of the white rice by applying a high rice milling pressure.

ところで、研削精米機では、軸線回りに回転する精米ロールの外周側に離間して配置された除糠筒を含んで構成されている。このような精米装置では、設置スペースなどの観点で、精米ロール及び除糠筒の回転軸が縦方向（上下方向）とされた、いわゆる縦型の精米装置であることが好ましい場合が多い（例えば特許文献１参照）。そして、このような縦型の精米装置としては、除糠筒の内周面側にいわゆる多条螺旋などが設けられていて、精米ロールが回転することによって米粒が多条螺旋に沿って移動しつつ精米処理（研米処理）される研削精米機が知られている。   By the way, the grinding rice polishing machine is configured to include a dehulling cylinder that is arranged apart from the outer peripheral side of the rice milling roll that rotates about the axis. In such a rice milling apparatus, it is often preferable from the viewpoint of installation space to be a so-called vertical rice milling apparatus in which the rotation axis of the milling roll and the dehulling cylinder is the vertical direction (vertical direction) (for example, Patent Document 1). As such a vertical rice milling apparatus, a so-called multi-threaded spiral is provided on the inner peripheral surface side of the dehulling cylinder, and the rice grains move along the multi-strand spiral as the milling roll rotates. A grinding rice milling machine that performs rice milling (kening) is known.

このような研削精米機では、一般に、除糠筒の内周面側にいわゆる多条螺旋が設けられており、精米ロールが回転することによって米粒が多条螺旋に案内されて移動しつつ精米処理されるようになっている。   In such a grinding rice mill, generally, a so-called multi-helix is provided on the inner peripheral surface side of the dehulling cylinder, and the rice grains are guided by the multi-helix and moved while the rice mill roll rotates. It has come to be.

ところで、従来の縦型の研削精米機では、いわゆるむら搗きによる精米むらが生じ易いという問題があった。
特許第３１０１０４２号公報 By the way, the conventional vertical grinding rice polishing machine has a problem that uneven rice milling due to so-called uneven milling is likely to occur.
Japanese Patent No. 3101042

本発明は、上記事実を考慮して、精米むらの発生を抑えた研削精米機を提供することを課題とする。   In view of the above facts, an object of the present invention is to provide a grinding rice mill that suppresses the occurrence of uneven rice milling.

請求項１に記載の発明は、円筒状で回転軸が上下方向に向けられた精米ロールと、前記精米ロールの外周側に設けられ、前記精米ロールとの間に精米室を形成する除糠筒と、を備え、前記精米ロールが回転することにより米粒が前記精米室内で上昇しながら精米されていく研削精米機であって、前記除糠筒の内周面側に、周方向に対して交差する斜め方向に沿って平行でかつ螺旋状に配置された斜め突起からなる多条螺旋が設けられ、前記多条螺旋の所定箇所に非連続部が形成されていることにより、前記多条螺旋に沿って前記非連続部に到達した米粒が前記非連続部で攪拌されることを特徴とする。   The invention according to claim 1 is a rice milling roll having a cylindrical shape whose rotation axis is directed in the vertical direction, and a milling cylinder provided on the outer peripheral side of the rice milling roll to form a rice milling chamber between the rice milling roll. And a grinding rice milling machine in which rice grains are polished while being raised in the rice milling chamber by rotating the rice milling roll, intersecting the inner circumferential surface side of the dehulling cylinder with respect to the circumferential direction. A plurality of spirals formed of oblique protrusions arranged in parallel and spirally along the oblique direction, and a discontinuous portion is formed at a predetermined location of the multiple spirals. The rice grains that have reached the discontinuous portion along the stirrer are stirred in the discontinuous portion.

請求項１に記載の発明では、このように、精米ロールが回転することにより、精米ロールと除糠筒との間に形成された精米室内を、多条螺旋に沿って米粒が上昇しながら精米（研米）されていく。ここで、多条螺旋の所定箇所に非連続部を形成しており、非連続部に到達した米粒はこの非連続部で混合攪拌される。従って、精米むらの発生（むら搗きの発生）を大幅に抑えた研削精米機とすることができる。   In the invention according to claim 1, as the rice mill roll rotates as described above, the rice mill rises in the rice mill chamber formed between the rice mill roll and the dehuller cylinder while the rice grains rise along the multi-row spiral. (Kenmai) will be done. Here, the discontinuous part is formed in the predetermined location of the multi-thread, and the rice grains that have reached the discontinuous part are mixed and stirred in the discontinuous part. Therefore, it is possible to provide a grinding rice mill that greatly suppresses the occurrence of uneven rice milling (occurrence of uneven milling).

所定箇所は、通常、複数箇所であり、所定箇所の設定位置については、除糠筒の内径などを考慮して、米粒の混合攪拌が適宜行われるような位置に設定することが好ましい。   The predetermined location is usually a plurality of locations, and the setting position of the predetermined location is preferably set to a position where mixing and stirring of the rice grains is appropriately performed in consideration of the inner diameter of the stripping cylinder and the like.

本発明によれば、精米むらの発生を抑えた研削精米機を実現させることができる。   ADVANTAGE OF THE INVENTION According to this invention, the grinding rice milling machine which suppressed generation | occurrence | production of the rice unevenness can be realized.

以下、実施形態を挙げ、本発明の実施の形態について説明する。図１に示すように、本発明の一実施形態に係る研削精米機（上昇式研削精米機）１０は、円筒状で回転軸が上下方向に向けられている精米ロール（研削砥石）１２と、精米ロール１２の外周側に設けられた除糠筒１４と、除糠筒１４の外周側に設けられたケース１６と、ケース１６の下部側に土台部１８と、を備えている。   Hereinafter, embodiments will be described and embodiments of the present invention will be described. As shown in FIG. 1, a grinding rice mill (rising grinding rice mill) 10 according to an embodiment of the present invention includes a rice mill roll (grinding grindstone) 12 having a cylindrical shape and a rotation axis directed in the vertical direction, A dehulling cylinder 14 provided on the outer peripheral side of the rice milling roll 12, a case 16 provided on the outer peripheral side of the dehulling cylinder 14, and a base portion 18 on the lower side of the case 16 are provided.

精米ロール１２の回転軸は、ケース１６の略中央位置に配置されている。また、土台部１８の中には、除糠筒１４や後述のスクリュー４８などへ回転力を与える駆動部（図示せず）が設けられている。   The rotational axis of the rice mill roll 12 is disposed at a substantially central position of the case 16. In addition, in the base portion 18, a drive portion (not shown) is provided that applies a rotational force to the removal cylinder 14, a screw 48 described later, and the like.

精米ロール１２と除糠筒１４との間には精米室２２が形成されており、精米ロール１２が回転することにより、精米室２２内で米粒が上昇しながら精米（研米）されていくようになっている。一方、除糠筒１４とケース１６との間には、除糠筒１４を内側から外側へ通過した糠を収容する除糠室２４が形成されている。   A rice milling chamber 22 is formed between the rice milling roll 12 and the dehulling cylinder 14, and as the rice milling roll 12 rotates, the rice grains rise in the rice milling chamber 22 while being polished (polished rice). It has become. On the other hand, a removal chamber 24 is formed between the removal tube 14 and the case 16 to accommodate the bags that have passed through the removal tube 14 from the inside to the outside.

また、研削精米機１０は、精米室２２の下部に米粒（玄米）を送給する米粒送給部２８と、精米室２２の上端から送り出される精米処理後の米粒（白米）を外部に排出して回収させるための米粒排出部３０と、を備えている。   In addition, the grinding rice mill 10 discharges the rice grains feeding unit 28 that feeds the rice grains (brown rice) to the lower part of the rice milling chamber 22 and the rice grains after the milling process (white rice) fed from the upper end of the rice milling chamber 22 to the outside. And a rice grain discharger 30 for recovery.

更に、研削精米機１０は、ケース１６の下部に、除糠室２４に入った糠粉を排出させるための吸引ダクト部３２を備えている。この吸引ダクト部３２は、基端側で除糠室２４に連通し、先端側で延長ダクト３４と着脱可能になっている。延長ダクト３４内は、吸引機構（図示せず）によって空気吸引可能になっている。   Further, the grinding / milling machine 10 is provided with a suction duct portion 32 for discharging the flour that has entered the removal chamber 24 at the bottom of the case 16. The suction duct portion 32 communicates with the removal chamber 24 on the proximal end side, and is attachable to and detachable from the extension duct 34 on the distal end side. The inside of the extension duct 34 can be sucked by air by a suction mechanism (not shown).

（除糠筒）
図２、図３に示すように、除糠筒１４の内周面側には、周方向に対して交差する斜め方向に沿って平行でかつ螺旋状に配置された斜め突起からなる多条螺旋３６が設けられている。多条螺旋３６の螺旋方向は、精米ロール１２の回転方向Ｒに沿って徐々に上昇する向きにされている。除糠筒１４の周方向に対して多条螺旋３６がなす角度は、除糠筒１４の内径や回転速度などに応じて設定されている。 (Exfoliating cylinder)
As shown in FIGS. 2 and 3, on the inner peripheral surface side of the removal cylinder 14, a multi-threaded spiral comprising diagonal protrusions arranged in parallel and spirally along an oblique direction intersecting the circumferential direction. 36 is provided. The spiral direction of the multi-helix 36 is set to gradually rise along the rotation direction R of the milled rice roll 12. The angle formed by the multiple helix 36 with respect to the circumferential direction of the removal cylinder 14 is set according to the inner diameter, the rotational speed, and the like of the removal cylinder 14.

この多条螺旋３６には切欠部３８（すなわち多条螺旋を部分的に形成していない欠損部）が非連続部として所定箇所に形成されている。本実施形態では、上記切欠部３８は、除糠筒１４を回転軸方向に沿って略４等分する位置に、回転軸に沿って縦方向に配設されている。精米ロール１２の周方向に沿った切欠部３８の長さ成分Ｌは、除糠筒１４の内径や回転速度などを考慮して適切に設定されている。そして、多条螺旋３６は、縦方向（上下方向）の隣り合う間隔が等間隔となるように、縦方向に４本の斜め突起が配置されたもので構成される。   In the multi-helix 36, a notch 38 (that is, a defect that does not partially form the multi-helix) is formed as a discontinuous part at a predetermined location. In the present embodiment, the notch 38 is disposed in the vertical direction along the rotation axis at a position that divides the scissor cylinder 14 into approximately four equal parts along the rotation axis direction. The length component L of the notch 38 along the circumferential direction of the milled rice roll 12 is appropriately set in consideration of the inner diameter, the rotational speed, and the like of the removal cylinder 14. The multi-helix 36 is configured by four oblique protrusions arranged in the vertical direction so that adjacent intervals in the vertical direction (vertical direction) are equal.

この多条螺旋３６を設けるには、例えば、所定形状の斜め突起を予め形成しておき、除糠筒１４の内周面側に溶接によりこの斜め突起を固着する。   In order to provide the multi-strand spiral 36, for example, an oblique protrusion having a predetermined shape is formed in advance, and the oblique protrusion is fixed to the inner peripheral surface side of the removal cylinder 14 by welding.

また、除糠筒１４には、精米によって発生した糠粉を通過させる多数の細孔状の除糠孔４０が全周にわたって配設されている。   In addition, a large number of pore-shaped removal holes 40 through which the flour generated by the milled rice is passed are arranged in the removal cylinder 14 over the entire circumference.

更に、除糠筒１４の下部には、米粒送給部２８からの米粒を精米室２２の下部に供給するための流入口４２が形成されている。   In addition, an inlet 42 for supplying rice grains from the rice grain feeding unit 28 to the lower part of the rice milling chamber 22 is formed at the lower part of the dehulling cylinder 14.

また、除糠筒１４の上端には上つば部１４Ｕが、除糠筒１４の下端には下つば部１４Ｌが形成されていて、上つば部１４Ｕ、下つば部１４Ｌ、除糠筒１４、及び、ケース１６によって上記の除糠室２４が形成されている。   Further, an upper collar portion 14U is formed at the upper end of the removal cylinder 14, and a lower collar section 14L is formed at the lower end of the removal cylinder 14, and the upper collar section 14U, the lower collar section 14L, the removal cylinder 14, and The removal chamber 24 is formed by the case 16.

（米粒送給部）
米粒送給部２８は、除糠筒１４の流入口４２に米粒を送給する強制送給筒４６と、強制送給筒４６内に設けられ米粒を下方へ強制的に送給するスクリュー４８と、を備えている。強制送給筒４６の上端には、米粒を強制送給筒４６へ供給する供給樋５０が着脱自在に取付可能となっている。 (Rice supply department)
The rice grain feeding unit 28 includes a forced feeding cylinder 46 that feeds the rice grains to the inlet 42 of the stripping cylinder 14, and a screw 48 that is provided in the forced feeding cylinder 46 and forcibly feeds the rice grains downward. It is equipped with. A supply rod 50 for supplying rice grains to the forced feeding cylinder 46 can be detachably attached to the upper end of the forced feeding cylinder 46.

（米粒排出部）
ケース１６の上部には、精米室２２から上方へ送り出された米粒（白米）を排出するための米粒排出口５４が形成されている。そして、研削精米機１０には、米粒排出口５４から排出される米粒を所定位置にまで案内する米粒排出部３０が設けられている。 (Rice discharge part)
A rice grain discharge port 54 for discharging rice grains (white rice) fed upward from the rice milling chamber 22 is formed at the upper part of the case 16. The grinding rice mill 10 is provided with a rice grain discharging unit 30 that guides the rice grains discharged from the rice grain outlet 54 to a predetermined position.

米粒排出部３０は、米粒排出口５４を閉じる向きに付勢されている抵抗板５６と、米粒排出口５４に接続され、斜め下方に向けられた排出樋５８と、で構成される。ここで、精米室２２から上方へ送り出された米粒が上つば部１４Ｕから排出樋５８に順次押し出されていくように、米粒排出口５４の下端高さが上つば部１４Ｕの上面外縁高さと同じにされている。抵抗板５６は、排出樋５８に取付けられていてもよいし、ケース１６に取付けられていてもよい。   The rice grain discharge unit 30 includes a resistance plate 56 that is biased in a direction to close the rice grain discharge port 54, and a discharge basket 58 that is connected to the rice grain discharge port 54 and directed obliquely downward. Here, the lower end height of the rice grain discharge port 54 is the same as the height of the upper edge of the upper collar portion 14U so that the rice grains fed upward from the rice milling chamber 22 are sequentially pushed out from the upper collar portion 14U to the discharge rod 58. Has been. The resistance plate 56 may be attached to the discharge rod 58 or may be attached to the case 16.

（作用）
以下、本実施形態の作用、効果について説明する。 (Function)
Hereinafter, the operation and effect of this embodiment will be described.

供給樋５０に除糠処理する米粒（玄米）Ｂを投入して強制送給筒４６へ送り、スクリュー４８を回転させることによって強制送給筒４６から精米室２２の流入口４２へ米粒Ｂを供給する。また、駆動部１８によって精米ロール１２を回転させる。   Rice grains (brown rice) B to be removed are put into the supply basket 50 and fed to the forced feeding cylinder 46, and the screw 48 is rotated to supply the rice grains B from the forced feeding cylinder 46 to the inlet 42 of the rice milling chamber 22. To do. Further, the rice mill roll 12 is rotated by the drive unit 18.

ここで、上記の多条螺旋３６が除糠筒１４の内周面側に設けられているので、いわゆるリード角が付けられているのと同じになる。従って、精米ロール１２の回転により、米粒は多条螺旋３６に沿って螺旋状に搬送されながら精米処理されていく。この精米処理では、米粒表面に軽く傷が付けられつつ、米粒表面の糠層が削り取られていく。また、多条螺旋３６の上面に案内されて米粒が上昇していくので、米粒に対する負荷及び滞留時間を適度に設定しやすい。   Here, since the above-described multi-threaded spiral 36 is provided on the inner peripheral surface side of the removal cylinder 14, it is the same as a so-called lead angle. Therefore, by the rotation of the rice mill roll 12, the rice grains are subjected to the rice milling process while being spirally conveyed along the multi-helix 36. In this rice milling process, the surface of the rice grain is scraped off while the rice grain surface is lightly scratched. Further, since the rice grains are guided by the upper surface of the multi-helix 36, the load on the rice grains and the residence time are easily set appropriately.

そして、多条螺旋３６に切欠部３８を形成しているので、所定箇所に複数設けられた上記の切欠部３８に到達した米粒は、この切欠部３８で上下方向や除糠筒１４の半径方向に混合攪拌される。   And since the notch part 38 is formed in the multi-thread spiral 36, the rice grain which reached | attained the said notch part 38 provided in multiple in the predetermined location is the radial direction of the up-down direction or the stripping cylinder 14 in this notch part 38. Is mixed and stirred.

すなわち、図４に示すように、多条螺旋３６で案内されているゾーンＺ１では、米粒は略層流状態で送られる。そして、切欠部３８に到達した後から下流側の多条螺旋３６に到達した直後まで案内されているゾーンＺ２では、米粒は略乱流状態で送られていて攪拌されている。また、図３から判るように、ゾーンＺ２では米粒の一部が落下し、米粒は上下方向にも充分に攪拌される。これにより、いわゆるむら搗きの発生を抑えることができる。従って、米粒排出部３０からは、精米むらの発生が充分に抑えられた米粒（白米）Ｐが排出される。   That is, as shown in FIG. 4, in the zone Z1 guided by the multi-helix 36, the rice grains are sent in a substantially laminar flow state. In the zone Z2, which is guided from reaching the notch 38 to immediately after reaching the downstream multi-helix 36, the rice grains are fed and stirred in a substantially turbulent state. Further, as can be seen from FIG. 3, in the zone Z2, a part of the rice grains falls, and the rice grains are sufficiently stirred in the vertical direction. Thereby, generation | occurrence | production of what is called unevenness can be suppressed. Accordingly, the rice grain discharge unit 30 discharges rice grains (white rice) P in which the occurrence of uneven rice polishing is sufficiently suppressed.

以上説明したように、本実施形態では、除糠筒１４の内周面側には、所定箇所に切欠部３８が形成された多条螺旋３６が設けられている。そして、このような簡素な構成の除糠筒１４を研削精米機１０に設けることによって、精米むらの発生を大幅に抑えた精米機とすることができる。   As described above, in the present embodiment, the multi-threaded spiral 36 in which the notch portions 38 are formed at predetermined positions is provided on the inner peripheral surface side of the removal cylinder 14. Then, by providing the grinding machine 14 with such a simple configuration in the grinding rice mill 10, it is possible to provide a rice mill that greatly suppresses the occurrence of uneven rice milling.

（実施形態の補足説明）
上述した本実施形態に係る研削精米機１０では、除糠筒１４を回転軸方向に沿って略４等分する位置に、除糠筒１４の中心軸に沿って縦方向に切欠部３８が配設されているが、これに限らず、２等分する位置や６等分する位置、更には等分しない位置など、４等分以外の位置に切欠部３８が形成されていてもよい。この場合、上下方向に隣り合う多条螺旋３６の間隔ｄや、除糠筒の周方向に対してなす多条螺旋３６の傾斜角度θ（図３参照）を、切欠部３８の個数や配設位置に応じて調整することが好ましい。 (Supplementary explanation of the embodiment)
In the grinding rice milling machine 10 according to this embodiment described above, the notch portion 38 is arranged in the vertical direction along the central axis of the dehulling cylinder 14 at a position where the dehulling cylinder 14 is divided into approximately four equal parts along the rotation axis direction. However, the present invention is not limited to this, and the notch 38 may be formed at a position other than four equal parts, such as a position that divides into two parts, a position that divides into six parts, and a position that does not divide into equal parts. In this case, the interval d between the multiple spirals 36 adjacent to each other in the vertical direction and the inclination angle θ (see FIG. 3) of the multiple spirals 36 with respect to the circumferential direction of the stripping cylinder are determined according to the number and arrangement of the notches 38. It is preferable to adjust according to the position.

また、上述した本実施形態に係る研削精米機１０では、切欠部３８の位置が縦方向に列んで配置されているが、これに限らず、図５に示すように、縦方向に千鳥配置となるように多条螺旋の切欠部６８が形成された構成にしてもよい。また、図６に示すように、精米ロール１２の回転方向Ｒに順次ずれた配置となるように多条螺旋の切欠部７８が形成された構成にしてもよく、図７に示すように、回転方向Ｒの逆方向に順次ずれた配置となるように多条螺旋の切欠部８８が形成された構成にしてもよい。   Further, in the grinding rice milling machine 10 according to this embodiment described above, the positions of the notches 38 are arranged in a row in the vertical direction. However, the present invention is not limited thereto, and as shown in FIG. A multi-spiral notch 68 may be formed as described above. Moreover, as shown in FIG. 6, you may make it the structure by which the notch part 78 of the multi-thread spiral was formed so that it might become arrangement | positioning shifted | deviated sequentially in the rotation direction R of the rice milling roll 12, and as shown in FIG. A multi-spiral notch 88 may be formed so as to be sequentially displaced in the direction opposite to the direction R.

また、縦方向に列んだ切欠部３８に隣接する多条螺旋部３８Ａ、３８Ｂの斜め突起が互いに同一の螺旋上に位置しなくても良く、例えば、多条螺旋部３８Ｂ（図３参照）を上記間隔ｄの半分ほど上下方向にずらして配置してなる多条螺旋部９８Ｂ（図８参照）を、多条螺旋部３８Ｂに代えて設けてもよい。   Further, the oblique protrusions of the multi-helix spiral portions 38A and 38B adjacent to the cutout portions 38 arranged in the vertical direction may not be located on the same helix, for example, the multi-helix spiral portion 38B (see FIG. 3). May be provided in place of the multi-helix spiral portion 38B.

また、上述した本実施形態に係る研削精米機１０では、精米ロール１２の周方向に沿った切欠部３８の長さ成分Ｌ（図３参照）を全て均一としたが、これに限らず、長さ成分Ｌに長短の分布が形成されていてもよい。   Further, in the grinding rice mill 10 according to the above-described embodiment, the length component L (see FIG. 3) of the notch portion 38 along the circumferential direction of the rice mill roll 12 is all uniform. A length distribution may be formed in the component L.

また、図２では除糠孔４０の形状を縦方向に細長状の孔として描いているが、除糠筒１４の上下方向に対して所定の角度で傾斜されていてもよい。また、細長状に限らず、楕円状などの他の形状の除糠孔とすることも可能である。   Further, in FIG. 2, the shape of the removal hole 40 is drawn as an elongated hole in the vertical direction, but it may be inclined at a predetermined angle with respect to the vertical direction of the removal cylinder 14. In addition, the shape of the hole is not limited to an elongated shape, but may be other shapes such as an ellipse.

以上、実施形態を挙げて本発明の実施の形態を説明したが、上記実施形態は一例であり、要旨を逸脱しない範囲内で種々変更して実施できる。また、本発明の権利範囲が上記実施形態に限定されないことは言うまでもない。   The embodiments of the present invention have been described with reference to the embodiments. However, the above embodiments are merely examples, and various modifications can be made without departing from the scope of the invention. Needless to say, the scope of rights of the present invention is not limited to the above embodiment.

本発明の一実施形態に係る研削精米機の構成を示す側面断面図である。It is side surface sectional drawing which shows the structure of the grinding rice mill which concerns on one Embodiment of this invention. 本発明の一実施形態に係る研削精米機の除糠筒を示す斜視図である。It is a perspective view which shows the dehulling cylinder of the grinding rice mill which concerns on one Embodiment of this invention. 本発明の一実施形態に係る研削精米機の除糠筒を周方向に展開した状態で示す模式図である。It is a mimetic diagram shown in the state where the grain removing cylinder of the grinding rice mill concerning one embodiment of the present invention was developed in the peripheral direction. 図４（Ａ）及び（Ｂ）は、それぞれ、本発明の一実施形態に係る研削精米機で、精米室内での米粒の送給状態を示す平面断面図、及び、図４（Ａ）の部分拡大図である。4 (A) and 4 (B) are respectively a plan sectional view showing a state of feeding rice grains in a rice milling chamber and a portion of FIG. 4 (A), respectively, in a grinding rice milling machine according to an embodiment of the present invention. It is an enlarged view. 本発明の一実施形態に係る研削精米機の変形例で、除糠筒を周方向に展開した状態で示す模式図である。It is the modification of the grinding rice mill which concerns on one Embodiment of this invention, and is a schematic diagram shown in the state which expand | deployed the scissors cylinder in the circumferential direction. 本発明の一実施形態に係る研削精米機の変形例で、除糠筒を周方向に展開した状態で示す模式図である。It is the modification of the grinding rice mill which concerns on one Embodiment of this invention, and is a schematic diagram shown in the state which expand | deployed the scissors cylinder in the circumferential direction. 本発明の一実施形態に係る研削精米機の変形例で、除糠筒を周方向に展開した状態で示す模式図である。It is the modification of the grinding rice mill which concerns on one Embodiment of this invention, and is a schematic diagram shown in the state which expand | deployed the scissors cylinder in the circumferential direction. 本発明の一実施形態に係る研削精米機の変形例で、除糠筒を周方向に展開した状態で示す模式図である。It is the modification of the grinding rice mill which concerns on one Embodiment of this invention, and is a schematic diagram shown in the state which expand | deployed the scissors cylinder in the circumferential direction.

符号の説明Explanation of symbols

１０ 研削精米機
１２ 精米ロール
１４ 除糠筒
２２ 精米室
３６ 多条螺旋
３８ 切欠部（非連続部）
６８ 切欠部（非連続部）
７８ 切欠部（非連続部）
８８ 切欠部（非連続部） DESCRIPTION OF SYMBOLS 10 Grinding machine 12 Rice milling roll 14 Removal cylinder 22 Rice milling room 36 Multi-thread spiral 38 Notch part (non-continuous part)
68 Notch (non-continuous part)
78 Notch (non-continuous part)
88 Notch (non-continuous part)

Claims (1)

円筒状で回転軸が上下方向に向けられた精米ロールと、
前記精米ロールの外周側に設けられ、前記精米ロールとの間に精米室を形成する除糠筒と、
を備え、
前記精米ロールが回転することにより米粒が前記精米室内で上昇しながら精米されていく研削精米機であって、
前記除糠筒の内周面側に、周方向に対して交差する斜め方向に沿って平行でかつ螺旋状に配置された斜め突起からなる多条螺旋が設けられ、
前記多条螺旋の所定箇所に非連続部が形成されていることにより、前記多条螺旋に沿って前記非連続部に到達した米粒が前記非連続部で攪拌されることを特徴とする研削精米機。 A milled rice roll that has a cylindrical shape and whose axis of rotation is directed vertically;
A rice removal cylinder provided on the outer peripheral side of the rice mill roll and forming a rice mill chamber with the rice mill roll;
With
A grinding rice milling machine in which rice grains are polished while rotating in the rice milling chamber by rotating the rice milling roll,
On the inner peripheral surface side of the stripping cylinder, a multi-helix is provided that includes diagonal protrusions arranged in parallel and spirally along an oblique direction intersecting the circumferential direction,
Grinded rice milling characterized in that rice grains that have reached the discontinuous portion along the multi-strand spiral are agitated in the discontinuous portion by forming discontinuous portions at predetermined locations of the multi-strand spiral. Machine.
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