JP4994760B2 - Rice milling method and rice milling machine - Google Patents

Rice milling method and rice milling machine Download PDF

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JP4994760B2
JP4994760B2 JP2006261016A JP2006261016A JP4994760B2 JP 4994760 B2 JP4994760 B2 JP 4994760B2 JP 2006261016 A JP2006261016 A JP 2006261016A JP 2006261016 A JP2006261016 A JP 2006261016A JP 4994760 B2 JP4994760 B2 JP 4994760B2
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栄一 成川
武雄 堀
清 松田
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株式会社タイワ精機
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本発明は、投入された玄米のすべてを均一に精米する精米機に関する。   The present invention relates to a rice milling machine that uniformly mills all of the fed brown rice.

一般に一回搗き精米機は、搗精ロールと除糠金網から構成される搗精室内に玄米を加圧しながら充満させ、玄米同士の粒々摩擦で精米する構造がとられている。また、搗精室出口に設けた抵抗板の付勢力を変えることで、搗精室内の玄米にかかる圧力を変化させ、精白度を調整することができる。ここで、抵抗板の付勢力が強ければ精白度の高い(白い)白米、弱ければ精白度の低い(黒い)白米となり、通称分搗きと呼ばれる白米の精米が可能となる。   Generally, a once-milled rice mill has a structure in which brown rice is filled in a milling chamber composed of a milling roll and a stripping wire net while being pressed, and is polished by grain friction between the brown rice. In addition, by changing the urging force of the resistance plate provided at the exit of the milling chamber, the pressure applied to the brown rice in the milling chamber can be changed to adjust the degree of milling. Here, when the urging force of the resistance plate is strong, white rice with a high degree of milling (white) is obtained, and when it is weak, white rice with a low degree of whitening (black) is obtained.

ところで、上記構造の精米機では、玄米を連続的に供給して、それを精米し、白米として排出する連続精米については問題なく実行することができる。しかしながら、搗精室内に玄米が存在していない精米初期においては、搗精室内が玄米で充満していないため、玄米にかかる圧力が弱くならざるをえない。よって、最初に投入された玄米(先行玄米)は、精米圧力の不足から充分精米されないまま搗精ロール先端部まで送られ、未精白米のまま排出される。また、精米末期においても、最後に投入された玄米(最終玄米)については後続の玄米が無いため、搗精室内が玄米で満たされず、精米初期と同様充分に精米されない。そこで上記問題を解決するため、文献1の精米装置が提案されている。この装置は、精米初期と精米末期において搗精室の出入口を閉鎖し、先行玄米および最終玄米が充分に精米された後に、精白米を排出するものである。
特開平3−135442号公報
By the way, with the rice mill of the said structure, brown rice can be supplied continuously, it can be refined, and the continuous rice milling | discharging as white rice can be performed without a problem. However, in the early milling stage where brown rice does not exist in the milling chamber, the pressure applied to the brown rice must be reduced because the milling chamber is not filled with brown rice. Therefore, the brown rice first introduced (preceding brown rice) is sent to the tip of the milling roll without being sufficiently polished because of insufficient rice polishing pressure, and discharged as unmilled white rice. In addition, even at the end of the milled rice, the lastly introduced brown rice (final brown rice) has no subsequent brown rice, so the milled rice chamber is not filled with brown rice and is not sufficiently polished as in the early milled rice. Therefore, in order to solve the above problem, the rice milling apparatus of Document 1 has been proposed. This apparatus closes the entrance and exit of the milling room in the early and late milling stages, and discharges milled rice after the preceding brown rice and the final brown rice are sufficiently polished.
JP-A-3-135442

しかしながら、この装置には以下の問題点がある。すなわち、玄米を充分に加圧するためには搗精室が玄米で満たされている必要がある。しかし、搗精室を玄米で満たした後にその出入口を閉鎖して精米を行うと、精米により米糠が取り除かれる分、体積が減少する。米糠は、玄米の品種を問わず、玄米重量の約10%を占めており、その減少量は無視できるものではなく、結果として搗精室内の圧力が低下し、精白度が上昇せず、目標の精白度が得られなくなる。これに対しては、精白時間を長くして目標の精白度を得ることも考えられるが、搗精ロールでの攪拌が長くなることで米粒が損傷し、また米粒の温度が上昇して品質の低下を招く。   However, this apparatus has the following problems. That is, in order to sufficiently pressurize brown rice, the milling room needs to be filled with brown rice. However, when the milling room is filled with brown rice and then the entrance is closed and the milling is performed, the volume is reduced by the amount of rice milling removed by the milling. Rice bran occupies about 10% of the weight of brown rice, regardless of the variety of brown rice, and the decrease is not negligible. As a result, the pressure in the milling chamber decreases, the degree of milling does not increase, The degree of whitening cannot be obtained. For this, it is conceivable to increase the milling time to obtain the target milling degree, but the longer the stirring with the milling roll, the more the rice grains are damaged, and the temperature of the rice grains rises and the quality deteriorates. Invite.

本発明は、上記事情を鑑みたものであり、精米の初期から末期にかけて、均一な精白度の精白米が得られる精米方法および精米機を提供することを目的とする。   The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rice milling method and a rice mill capable of obtaining milled rice having a uniform milling degree from the initial stage to the final stage of milled rice.

本発明のうち請求項1の発明は、搗精室を有する精米機により玄米を精米する精米方法であって、初期精米および/または終了精米において、前記搗精室内に規定量の米を保有する状態で、前記搗精室への玄米の供給および搗精室からの白米の排出を遮断し、一定量の玄米について精米処理を行い、該精米処理途中に前記搗精室に、減少した米を補充して前記搗精室内を充満させる分量の玄米を追加供給することを特徴とする。ここで、初期精米とは、搗精室に最初に投入された玄米についての精米であり、終了精米とは、搗精室に最後に投入された玄米についての精米である。よって、ある量の玄米を精米する際には、最初に初期精米を行い、続けて連続精米を行い、最後に終了精米を行うことになる。また、米の規定量は、初期精米においては、目標とする精白度により異なるものであり、精白度が高いほど多く、終了精米においては、搗精室を満たす量である。
The invention according to claim 1 of the present invention is a rice milling method in which brown rice is milled by a rice mill having a milling room, and in the initial milled rice and / or the finished milled rice, a specified amount of rice is held in the milling chamber. The supply of brown rice to the milling room and the discharge of white rice from the milling room are cut off, a certain amount of brown rice is subjected to milling, and the milled rice is replenished with reduced rice during the milling process. It is characterized by supplying an additional amount of brown rice to fill the room . Here, the initial milled rice is the milled rice for the brown rice first put into the milling room, and the finished milled rice is the milled rice for the brown rice last thrown in the milling room. Therefore, when a certain amount of brown rice is milled, initial milling is performed first, followed by continuous milling, and finally final milling. The prescribed amount of rice varies depending on the target milling degree in the initial milling, and increases as the milling degree increases, and in the finished milling, it is the amount that satisfies the milling mill.

また、請求項2の発明は、玄米を投入する玄米ホッパと、搗精ロールを有する搗精室と、該搗精室の搗精室出口に設けてある抵抗板と、前記玄米ホッパと前記搗精室との間に設け該搗精室内に玄米を一定量ずつ供給する定量供給手段と、前記搗精ロールおよび前記抵抗板ならびに前記定量供給手段の動作を制御する制御部と、を備え、前記制御部が、初期精米および/または終了精米において、前記搗精室内に規定量の米を保有した状態で、前記定量供給手段による前記搗精室への玄米の供給を停止し、かつ前記抵抗板の付勢力を強めて前記搗精室からの白米の排出を遮断して、前記搗精ロールによる玄米の精米処理を行い、該精米処理途中に、前記定量供給手段の運転を再開して前記搗精室に、減少した米を補充して前記搗精室内を充満させる分量の玄米を追加供給することを特徴とする精米機であり、上記精米方法を実施するものである。ここで、初期精米において玄米を追加するのは、精米により米糠が取り除かれて減少した分を補うためであり、終了精米において玄米を追加するのは、玄米の供給を遮断してから白米の排出を遮断するまでの間に排出された分を補うためである。
Further, the invention of claim 2 is a brown rice hopper for introducing brown rice, a milling chamber having a milling roll, a resistance plate provided at a milling chamber outlet of the milling chamber, and between the brown rice hopper and the milling chamber. And a control unit for controlling the operation of the milling roll and the resistance plate and the metering supply unit, wherein the control unit includes initial milling and In the finished milled rice, in a state where a predetermined amount of rice is held in the milling chamber, the supply of brown rice to the milling chamber by the quantitative feeding means is stopped, and the urging force of the resistance plate is increased to increase the resistance of the milling chamber Blocking the discharge of white rice from the rice, and performing the rice polishing process of the brown rice by the milling roll, in the middle of the milling process, restarting the operation of the quantitative supply means to replenish the reduced rice to the milling room, Fully fills the interior That amount is a rice mill, characterized in that the brown rice to add supply is for carrying out the rice method. Here, the addition of brown rice in the initial milled rice is to make up for the reduction of rice bran removed by milling, and the addition of brown rice in the finished milled rice is to remove white rice after blocking the supply of brown rice. This is to make up for the amount discharged before shutting off.

さらに、請求項3の発明は、上記精米機において、初期精米から連続精米へ移行するよう制御されるものであり、前記制御部が、白米の排出を遮断するために前記抵抗板の付勢力を抵抗初期値に設定し、前記定量供給手段を運転して初期精米量の玄米を搗精室へ供給後、前記定量供給手段を停止し、精米を開始してから玄米の精米に要する時間(初期精米時間)経過後、初期追加精米量の玄米を追加供給し、精白度が安定するまでの時間(初期追加精米時間)経過後、前記抵抗板の付勢力を設定された精白度に応じた抵抗通常値に設定し、前記定量供給手段を連続運転して連続精米に移行することを特徴とする。ここで、抵抗通常値は精白度に応じて定まり、設定された精白度が高いほど大きな値となる。また、抵抗初期値は、初期精米において搗精室からの白米の排出を遮断するため、抵抗通常値よりも大きな値となる。初期精米量は、搗精室が充満する量が上限であるが、精白度が低い場合には上限値より少ない量でもよい。さらに、初期追加精米量は、精米により取り除かれた米糠に相当する分量であり、初期精米量の10%程度が好ましいが、それより多くてもよく、また設定された精白度が低い場合には追加しなくてもよい。   Further, the invention according to claim 3 is controlled such that in the above-described rice milling machine, a transition is made from initial rice milling to continuous rice milling, and the control unit applies the biasing force of the resistance plate in order to cut off the discharge of white rice. After setting the initial resistance value and operating the quantitative supply means to supply the initial rice milled amount of brown rice to the milling room, the quantitative supply means is stopped and the time required for the rice polishing of the brown rice after starting the rice polishing (initial rice polishing After the elapse of time), additional brown rice of the initial additional milled amount is supplied, and after the time until the milling rate stabilizes (initial additional milling time), the resistance according to the milling degree for which the urging force of the resistance plate is set normally It sets to a value, The said fixed_quantity | feed_rate supply means is continuously operated, It transfers to continuous rice polishing, It is characterized by the above-mentioned. Here, the normal resistance value is determined according to the degree of whitening, and increases as the set degree of whitening increases. Further, the initial resistance value is larger than the normal resistance value in order to block the discharge of white rice from the milling mill in the initial milled rice. The initial rice milling amount is the upper limit of the amount that the milling mill fills, but may be smaller than the upper limit when the degree of milling is low. Furthermore, the initial additional milled rice amount is equivalent to the rice bran removed by the milled rice, and is preferably about 10% of the initial milled rice amount, but may be more than that, and if the set milling degree is low It is not necessary to add.

また、請求項4の発明は、上記精米機において、連続精米から終了精米へ移行するよう制御されるものであり、前記制御部が、連続精米中に前記玄米ホッパ内の残玄米が規定量に達すると、前記定量供給手段を停止し、白米の排出を遮断するために前記抵抗板の付勢力を抵抗終了値に設定し、前記定量供給手段を運転して玄米ホッパ内に残った玄米を前記搗精室へ追加供給し、玄米の精米に要する時間(終了精米時間)経過後、前記抵抗板の付勢力を弱め、前記抵抗板を前記搗精室出口から開放し、前記搗精室内の残留米を排出することを特徴とする。ここで、抵抗終了値は、搗精室からの白米の排出を遮断するため抵抗通常値より大きな値であることが好ましいが、設定された精白度が低い場合には抵抗通常値と同等の値であってもよい。
According to a fourth aspect of the present invention, in the above rice milling machine, control is performed so as to shift from continuous rice milling to end rice milling, and the control unit sets the residual brown rice in the brown rice hopper to a prescribed amount during continuous rice milling. When reaching, stop the quantitative supply means, set the urging force of the resistance plate to the resistance end value in order to cut off the discharge of white rice, operate the quantitative supply means to remove the brown rice remaining in the brown rice hopper After additional time is supplied to the milling room, and the time required for milling the brown rice (finishing milling time) has elapsed, the urging force of the resistance plate is weakened, the resistance plate is opened from the exit of the milling chamber, and the residual rice in the milling chamber is discharged. It is characterized by doing . In here, the resistance end value is preferably a value larger than the resistance normal values for blocking the discharge of rice from pearling chamber, set when the lower milling degree is the resistance normal value and a value equivalent to It may be.

また、請求項の発明は、上記精米機において、設定された精白度に応じて最適な精米が行われるよう制御されるものであり、前記制御部が、設定された精白度が高いほど、抵抗初期値、抵抗終了値、初期精米量、初期追加精米量、初期精米時間、初期追加精米時間、終了精米時間の各値を大きい値に設定することを特徴とする。
Further, the invention of claim 5 is controlled so that the optimum rice milling is performed in accordance with the set milling degree in the rice milling machine, and the control unit has a higher set milling degree, The initial value of resistance, the end value of resistance, the initial rice milling amount, the initial additional rice milling amount, the initial rice milling time, the initial additional rice milling time, and the final rice milling time are set to large values.

さらに、請求項の発明は、前記抵抗板が、円盤状であり、円の中心軸に対して回動および首振り自在に保持されており、かつ搗精室側の面に放射状の突状体を有することを特徴とする。
Furthermore, the invention according to claim 6 is that the resistance plate has a disk shape, is held so as to be rotatable and swingable with respect to the center axis of the circle, and has a radial protrusion on the surface of the sperm chamber. It is characterized by having.

本発明のうち請求項1の発明によれば、初期精米の途中に、精米進行によって目減りした米糠分の量の米を搗精室に追加投入し、また終了精米の途中に、玄米の供給停止後白米の排出遮断までの間に排出された分の量の米を搗精室に追加投入することで、この種の精米方式で生じやすい初期・終了精米時の精白度と連続精米の精白度差を防止することができる。併せて追加投入によって、初期・終了精米工程の時間も短縮でき、その分米粒の攪拌も過度とならず砕粒も少なく、必要以上の温度上昇も抑えられ、品質低下を防ぐことができる。   According to the first aspect of the present invention, the amount of rice bran reduced by the progress of rice polishing is additionally introduced into the rice milling room during the initial rice milling, and the supply of brown rice is stopped during the final rice polishing. By adding the amount of rice discharged until the shut-off of white rice into the milling room, the difference between the milling degree at the initial and final milling and the milling degree of continuous milling, which is likely to occur in this type of milling method Can be prevented. In addition, the additional input can shorten the time of the initial and final rice milling processes, the stirring of the rice grains is not excessive, the crushed grains are less, the temperature rise more than necessary, and the deterioration of quality can be prevented.

また、請求項2の発明によれば、玄米ホッパと精米手段との間に、玄米を一定量ずつ搗精室内に供給する定量供給手段を設け、初期精米および終了精米において適切な量の玄米を追加供給し、初期・終了精米の精白度状態を安定させることができる。   In addition, according to the invention of claim 2, there is provided a quantitative supply means for supplying a certain amount of brown rice into the milling chamber between the brown rice hopper and the rice milling means, and an appropriate amount of brown rice is added in the initial rice polishing and the final rice polishing. It is possible to stabilize the milling state of the initial and final milled rice.

さらに、請求項3の発明によれば、初期精米から連続精米へ円滑に移行することができる。一方、請求項4の発明によれば、連続精米から終了精米へ円滑に移行することができる
Furthermore, according to the invention of claim 3, it is possible to smoothly shift from initial rice milling to continuous rice milling. On the other hand, according to the invention of claim 4, it is possible to smoothly shift from continuous rice polishing to finished rice polishing .

また、請求項の発明によれば、設定された精白度に応じて制御における各値を変化させることで、一台の精米機で、あらゆる精白度に対応して安定した精米を行うことができる。
Further, according to the invention of claim 5 , by changing each value in the control according to the set milling degree, it is possible to perform stable rice milling corresponding to all milling degrees with one rice milling machine. it can.

さらに、請求項の発明によれば、抵抗板により搗精室出口をふさぐ際、抵抗板が排出される米粒をかみ込んで隙間が生じることを防ぐ。すなわち、搗精室内部では搗精ロールが回転しているため、米粒は搗精ロールの回転軸を中心に回転しながら搗精室出口より排出され、それが抵抗板の突状体に衝突することで抵抗板が回転し、仮に米粒をかみ込みそうになっても、回転により米粒が弾き出されるものである。 Furthermore, according to the invention of claim 6 , when the exit of the semen chamber is blocked by the resistance plate, it prevents the clearance from being generated by biting the rice grains discharged from the resistance plate. That is, since the milling roll is rotating inside the milling chamber, the rice grains are discharged from the milling chamber outlet while rotating around the rotation axis of the milling roll, and the resistance plate is collided with the projections of the resistance plate. Rotating, even if it is about to bite the rice grain, the rice grain is sputtered by the rotation.

本発明の精米方法および精米機の具体的な構成について、各図面に基づいて説明する。   Specific configurations of the rice milling method and the rice milling machine of the present invention will be described with reference to the drawings.

本精米機は、操作盤1と、玄米ホッパ2と、精米手段4とを有し、玄米ホッパ2と精米手段4との間には定量供給手段3が設けられている。以上の各構成要素はすべて筐体Bに納められており、図1にその概要を示す。   This rice mill has an operation panel 1, a brown rice hopper 2, and a rice milling means 4, and a quantitative supply means 3 is provided between the brown rice hopper 2 and the rice milling means 4. All the above components are housed in a casing B, and an outline thereof is shown in FIG.

玄米ホッパ2は、本精米機の上部に設けられ、精米前の玄米を貯留する。また、玄米ホッパ2の内側には玄米センサ11が設置されており、玄米ホッパ2内の玄米がある規定量に達したことを検知する。この規定量については後述する。   The brown rice hopper 2 is provided in the upper part of this rice mill, and stores the brown rice before the rice polishing. Moreover, the brown rice sensor 11 is installed inside the brown rice hopper 2, and it detects that the brown rice in the brown rice hopper 2 has reached a predetermined amount. This prescribed amount will be described later.

精米手段4は、搗精ロール21を内設する搗精室5を搗精室入口9よりも搗精室出口10が下位となるよう配設し、精白度を調節する抵抗板8を搗精室出口10へ設け、搗精室5から糠を排出する除糠ファン6を添設したものであり、搗精ロール21の回転に伴って玄米の糠層を剥ぎ落し、精米された米を搗精室出口10より排出する。搗精室5の周囲には集糠ダクト37が設けてあり、集糠ダクト37と搗精室5は除糠金網22により隔てられる。糠は除糠金網22を通り抜け、集糠ダクト37から除糠ファン6で生じる気流とともに機外のサイクロン(図示省略)へ搬送される。また、精米手段4は、搗精ロール21を駆動するメインモータ23と、除糠ファン6を駆動するファンモータ36と、抵抗板8が搗精室出口10を封止する圧力を調整する抵抗装置7を具備する。   The rice milling means 4 is provided with a milling chamber 5 in which a milling roll 21 is installed so that a milling chamber outlet 10 is lower than a milling chamber inlet 9, and a resistance plate 8 for adjusting the degree of milling is provided at the milling chamber outlet 10. A dehulling fan 6 that discharges the koji from the koji mill 5 is attached. The koji layer of the brown rice is peeled off as the kneading roll 21 rotates, and the milled rice is discharged from the kneading room outlet 10. A collection duct 37 is provided around the collection chamber 5, and the collection duct 37 and the collection room 5 are separated by a metal strip 22. The soot passes through the demetalization wire mesh 22 and is conveyed from the collection duct 37 to the cyclone (not shown) outside the machine together with the air flow generated by the deionization fan 6. The rice milling means 4 includes a main motor 23 that drives the milling roll 21, a fan motor 36 that drives the demolding fan 6, and a resistance device 7 that adjusts the pressure with which the resistance plate 8 seals the milling chamber outlet 10. It has.

玄米ホッパ2と精米手段4との間には、定量供給手段3が設けられている。図2および図3に示すのは、定量供給手段3の断面図および外観図である。定量供給手段3は、上下に円筒入口18および円筒出口19を有するバルブ円筒17内に、等角度で放射状に形成された繰出し羽根13を有し、円筒入口18は玄米ホッパ2と、円筒出口19は搗精室入口9と直結している。繰出し羽根13は繰出し軸12に固定されており、繰出し軸12は繰出しモータ20で一定方向に回転する。隣り合う二枚の繰出し羽根13の間には空間部14が形成され、該空間部14が円筒入口18に差し掛かると、玄米ホッパ2の玄米が円筒入口18から空間部14へ流入する。このように繰出し軸12の回転に伴い空間部14が円筒入口18を通過するごとに、一定量ずつの玄米が順次空間部14へ流入する。一方、空間部14に蓄えられた玄米は、円筒出口19に差し掛かると円筒出口19から搗精室入口9へ供給される。   A fixed amount supply means 3 is provided between the brown rice hopper 2 and the rice milling means 4. 2 and 3 are a cross-sectional view and an external view of the quantitative supply means 3. The fixed amount supply means 3 has feed blades 13 formed radially at equal angles in a valve cylinder 17 having a cylindrical inlet 18 and a cylindrical outlet 19 on the upper and lower sides. The cylindrical inlet 18 includes the brown rice hopper 2 and the cylindrical outlet 19. Is directly connected to the entrance 9 The feeding blade 13 is fixed to the feeding shaft 12, and the feeding shaft 12 is rotated in a fixed direction by a feeding motor 20. A space portion 14 is formed between two adjacent feeding blades 13, and when the space portion 14 reaches the cylindrical inlet 18, the brown rice of the brown rice hopper 2 flows into the space portion 14 from the cylindrical inlet 18. Thus, every time the space portion 14 passes through the cylindrical inlet 18 as the feed shaft 12 rotates, a certain amount of brown rice flows into the space portion 14 sequentially. On the other hand, when the brown rice stored in the space 14 reaches the cylindrical outlet 19, it is supplied from the cylindrical outlet 19 to the milling chamber inlet 9.

また、定量供給手段3は、精米手段4へ供給する玄米量を監視するためのカウントセンサ16を有する。カウントセンサ16はバルブ円筒17の外側に設置され、繰出し軸12に直結した繰出し検出片15と対峙する。繰出し検出片15は空間部14と同じ数だけ放射状に設けてあり、空間部14が円筒入口18を通過するごとに繰出し検出片15がカウントセンサ16の直前を通過し、一カウントとして数える。例えば、本実施例のように繰出し羽根13が四枚の場合、繰出し軸12が一回転すれば空間部14が円筒入口18を四回通過し、カウントセンサ16は四カウントを数える。また、搗精室入口9へは空間部14四つ分の玄米が供給されることになる。   The quantitative supply means 3 includes a count sensor 16 for monitoring the amount of brown rice supplied to the rice milling means 4. The count sensor 16 is installed outside the valve cylinder 17 and faces the feeding detection piece 15 directly connected to the feeding shaft 12. The same number of feeding detection pieces 15 as the space portions 14 are provided in a radial pattern. Each time the space portion 14 passes through the cylindrical inlet 18, the feeding detection pieces 15 pass immediately before the count sensor 16 and are counted as one count. For example, when there are four feeding blades 13 as in this embodiment, if the feeding shaft 12 makes one rotation, the space portion 14 passes through the cylindrical inlet 18 four times, and the count sensor 16 counts four counts. In addition, brown rice for four spaces 14 is supplied to the entrance 9 of the semen chamber.

ここで、繰出し羽根13は常に同じ位置で停止させることが必要である。すなわち、繰出し羽根13の停止後の待機位置が異なると、待機時に空間部14へ入り込む米の量に差異が生じやすく、特に初期精米において精白度に影響を受けやすい。定量供給手段3の繰出しモータ20は、空運転時と米粒繰出し時とでは負荷状態が違い、負荷の軽い空運転時においては、繰出しモータ20が停止信号を受けて停止しても、惰性で余分に回転してしまうことがある。これは、終了精米時で玄米ホッパ2の玄米をすべて取り込んだ後に、玄米が無くなり空運転状態となって停止する際に起こりやすく、ずれた位置で停止すると、次回の初期精米時に搗精室5内に供給する玄米量にばらつきが生じることになる。   Here, the feeding blade 13 must always be stopped at the same position. That is, if the standby position after the feeding blade 13 is stopped is different, the amount of rice entering the space 14 during standby is likely to be different, and is particularly susceptible to the degree of milling in the initial milling. The feeding motor 20 of the fixed-quantity supply means 3 has a different load state at the time of idle operation and at the time of rice grain delivery, and at the time of idle operation with a light load, even if the feeding motor 20 stops in response to a stop signal, it is extraordinary due to inertia. May rotate. This is likely to occur when the brown rice hopper 2 has been completely taken in and the brown rice has run out and stopped in an empty driving state. When stopped at a deviated position, this will occur in the milling room 5 at the next initial rice milling. Variation in the amount of brown rice supplied to the rice.

そこで本実施例では、繰出し羽根13の回転に同期する繰出し検出片15がカウントセンサ16を通過するたびにカウントアップする構造がとられている。また、定量供給手段3の繰出しモータ20は運転中に停止指令を受けると、負荷状態がいかなる場合でも惰性で回転しない、即時停止手段で制御されている。この即時停止手段は、例えば電気的なブレーキ回路あるいはブレーキ付きモータなどであってもよく、カウントセンサ16のカウント数が指定値に到達すると、繰出しモータ20は即時停止する。また、手動で停止スイッチ39を押して停止信号を発するときでも、停止指令を受けた後、最初にカウントセンサ16の「ON」信号を受信した時点で、繰出しモータ20を即時停止させることができる。このように、繰出し羽根13の停止時は必ず羽根と同期回転している繰出し検出片15がカウントセンサ16上に差し掛かり、センサの「ON」信号(または「OFF」信号)を受けて即時停止するため、常に繰出し羽根13(空間部14)の待機位置は同じところになる。   Therefore, in this embodiment, a structure is employed in which the feeding detection piece 15 synchronized with the rotation of the feeding blade 13 counts up each time it passes through the count sensor 16. Further, when the feed motor 20 of the fixed quantity supply means 3 receives a stop command during operation, it is controlled by an immediate stop means that does not rotate by inertia regardless of the load state. The immediate stop means may be, for example, an electric brake circuit or a motor with a brake. When the count number of the count sensor 16 reaches a specified value, the feeding motor 20 stops immediately. Even when the stop switch 39 is manually pressed to generate a stop signal, the feed motor 20 can be stopped immediately upon receiving the “ON” signal of the count sensor 16 for the first time after receiving the stop command. In this way, when the feeding blade 13 is stopped, the feeding detection piece 15 that is always rotating synchronously with the blade reaches the count sensor 16 and immediately stops upon receiving the sensor “ON” signal (or “OFF” signal). Therefore, the standby position of the feeding blade 13 (space portion 14) is always the same.

図4に示すのは、抵抗装置7の構造および抵抗板8の動作である。抵抗装置7は、抵抗モータ32と、抵抗モータ32の軸に直結する抵抗ネジ軸26と、抵抗ネジ軸26に螺合されるナット体27と、を具備し、抵抗モータ32により抵抗ネジ軸26を回転させると、ナット体27が前後に移動する。ナット体27と、抵抗板8を保持する抵抗アーム24との間には抵抗スプリング25が設けられ、ナット体27が移動することで抵抗スプリング25が変形し、その弾性力が抵抗アーム24を介して抵抗板8の付勢力として伝えられる。抵抗板8の付勢力を強くすれば精白度が高まり、弱くすれば精白度は低くなる。図4(a)は付勢力が弱く搗精室出口10を開放した場合、図4(b)は付勢力が強く搗精室出口10をふさいだ場合である。また、抵抗モータ32の軸に設けられた抵抗検出片30およびそれと対峙して設けられた回転センサ31によって、抵抗ネジ軸26の回転数を計測する。さらに、ナット体27の前後の移動の限界位置に抵抗上限スイッチ28および抵抗下限スイッチ29を設け、ナット体27が所定の範囲を超えて移動することを防ぐ。   FIG. 4 shows the structure of the resistance device 7 and the operation of the resistance plate 8. The resistance device 7 includes a resistance motor 32, a resistance screw shaft 26 that is directly connected to the shaft of the resistance motor 32, and a nut body 27 that is screwed to the resistance screw shaft 26. Is rotated, the nut body 27 moves back and forth. A resistance spring 25 is provided between the nut body 27 and the resistance arm 24 that holds the resistance plate 8, and the resistance spring 25 is deformed by the movement of the nut body 27, and its elastic force is transmitted via the resistance arm 24. Is transmitted as an urging force of the resistance plate 8. If the urging force of the resistance plate 8 is increased, the degree of whitening increases, and if it is weakened, the degree of whitening decreases. 4A shows a case where the urging force is weak and the semen chamber outlet 10 is opened, and FIG. 4B shows a case where the urging force is strong and the semen chamber outlet 10 is blocked. Further, the rotational speed of the resistance screw shaft 26 is measured by the resistance detection piece 30 provided on the shaft of the resistance motor 32 and the rotation sensor 31 provided opposite to the resistance detection piece 30. Further, a resistance upper limit switch 28 and a resistance lower limit switch 29 are provided at the limit positions of the front and rear movements of the nut body 27 to prevent the nut body 27 from moving beyond a predetermined range.

抵抗板8は円盤状であり、抵抗アーム24に取付軸受34を介して取り付けられており、さらに、ベアリング33を内蔵している。図5(a)に示すのは、抵抗板8の断面図である。取付軸受34は、抵抗板8を柔軟に保持するものであり、この取付軸受34およびベアリング33により、抵抗板8は円の中心軸に対して首振りおよび回動自在である。また、抵抗板8の搗精室5側の面には突状体35が設けられている。突状体35は抵抗板8の中心から放射状に形成されるもので、図5(b)のような一本の直線状のものでもよいし、図5(c)のような十字状のものでもよい。また、図5(a)および図6に示すように、抵抗板8によって搗精室出口10を閉止した際の抵抗板8と搗精室出口10の接触部分は、互いに面で接するように同じ角度(α°)で面取りされている。さらに、抵抗板8が搗精室出口10を完全にふさいだ状態において、抵抗板8の搗精室5側と、搗精室5内の搗精ロール21先端との隙間は、米一粒以下の寸法に設計されている。これは、精米初期に供給された玄米が、抵抗板8と搗精ロール21との間に入り込んで精米作用を受けずに排出されることを防止するためである。   The resistance plate 8 has a disk shape, is attached to the resistance arm 24 via an attachment bearing 34, and further includes a bearing 33. FIG. 5A is a cross-sectional view of the resistance plate 8. The mounting bearing 34 flexibly holds the resistance plate 8, and the resistance plate 8 can swing and rotate with respect to the center axis of the circle by the mounting bearing 34 and the bearing 33. In addition, a protrusion 35 is provided on the surface of the resistance plate 8 on the side of the semen chamber 5. The projecting body 35 is formed radially from the center of the resistance plate 8 and may be a single linear shape as shown in FIG. 5B or a cross shape as shown in FIG. But you can. Further, as shown in FIGS. 5A and 6, the contact portion of the resistance plate 8 and the semen chamber outlet 10 when the semen chamber outlet 10 is closed by the resistance plate 8 has the same angle ( chamfered at α °). Further, when the resistance plate 8 completely covers the semen chamber outlet 10, the clearance between the semen chamber 5 side of the resistance plate 8 and the tip of the semen roll 21 in the semen chamber 5 is designed to have a size of one grain or less of rice. Has been. This is to prevent unpolished rice supplied in the early stage of rice milling from entering between the resistance plate 8 and the milling roll 21 and being discharged without receiving the rice milling action.

図7は、米粒Rの排出中に搗精室出口10を抵抗板8でふさぐ場合の説明図であり、(a)が排出時、(b)が遮断時を示す。搗精室5内部では搗精ロール21が回転しているため、搗精室出口10から排出される米粒Rは搗精ロール21の回転方向に飛び出す。飛び出した米粒Rは抵抗板8の突状体35に衝突し、抵抗板8を回転させる。すると、米粒Rをかみ込みそうになっても、回転により米粒Rが弾き出される。また、抵抗板8を首振り自在としたことで、米粒Rが抵抗板8に衝突すると抵抗板8と搗精室出口10の開口縁との隙間が広がるため、さらに米粒Rをかみ込みにくくなっている。   FIGS. 7A and 7B are explanatory diagrams in the case where the semen chamber outlet 10 is closed with the resistance plate 8 during the discharge of the rice grains R, where FIG. Since the milling roll 21 is rotating inside the milling chamber 5, the rice grains R discharged from the milling chamber outlet 10 jump out in the rotation direction of the milling roll 21. The popped rice grains R collide with the protrusions 35 of the resistance plate 8 and rotate the resistance plate 8. Then, even if it is going to bite the rice grain R, the rice grain R is flipped out by rotation. Further, since the resistance plate 8 can be swung freely, when the rice grain R collides with the resistance plate 8, a gap between the resistance plate 8 and the opening edge of the scouring chamber outlet 10 is widened. Yes.

本精米機には、上部の使用者が操作しやすい位置に操作盤1が設けてある。操作盤1は、図8にその外観を示すものであり、制御部43による制御条件の一部となる運転スイッチ38、停止スイッチ39、加圧スイッチ40および減圧スイッチ41と、加圧スイッチ40および減圧スイッチ41で設定された精白度を表示する精白度表示ランプ42を有し、精米機を制御する制御部43は操作盤1の内部に設けてある。制御部43はCPUやメモリを備えたいわゆるマイクロコンピュータを用いて構成され、スイッチあるいはセンサから出力した入力データを、入力インターフェースを介してマイクロコンピュータへ取込み、メモリに記録したプログラムデータに基づく所定の処理を施して、起動信号および表示信号を出力インターフェースへ出力する。出力インターフェースは、マイクロコンピュータから出力された起動信号および表示信号によって各モータおよびランプへ所定の駆動信号および発光信号を印加する。図9に本精米機の入出力系を表すブロック図を示す。   In this rice milling machine, an operation panel 1 is provided at a position where an upper user can easily operate. The operation panel 1 has an appearance shown in FIG. 8, and includes an operation switch 38, a stop switch 39, a pressure switch 40, a pressure reduction switch 41, a pressure switch 40, and a control condition by the control unit 43. A control unit 43 that has a milling degree display lamp 42 that displays the milling degree set by the pressure reducing switch 41 and controls the rice milling machine is provided inside the operation panel 1. The control unit 43 is configured using a so-called microcomputer having a CPU and a memory, and takes in input data output from a switch or a sensor to the microcomputer via an input interface, and performs predetermined processing based on program data recorded in the memory. The start signal and the display signal are output to the output interface. The output interface applies a predetermined drive signal and light emission signal to each motor and lamp in accordance with a start signal and a display signal output from the microcomputer. FIG. 9 is a block diagram showing the input / output system of this rice mill.

以下、本実施例の操作ならびに動作シーケンスを図10のフローチャートに基づき説明する。なお、特に断らない限り、精白度を「白米」に設定した場合の例を示す。   Hereinafter, the operation and operation sequence of this embodiment will be described with reference to the flowchart of FIG. Unless otherwise specified, an example in which the degree of milling is set to “white rice” is shown.

使用者は、まず操作盤1の加圧スイッチ40および減圧スイッチ41により希望する精白度を設定する。精白度を高くしたければ加圧スイッチ40を、低くしたければ減圧スイッチ41を押す。設定された精白度は精白度表示ランプ42が点灯することにより確認できる。次に、玄米ホッパ2に玄米を投入する。玄米センサ11は、玄米ホッパ2内に玄米が有ることを検出し、制御部43へ送信する。なお、精白度設定と玄米投入の手順は逆であってもよい。   The user first sets the desired degree of whitening by the pressurization switch 40 and the decompression switch 41 of the operation panel 1. Press the pressure switch 40 to increase the degree of whitening, and press the pressure switch 41 to decrease it. The set whiteness can be confirmed by turning on the whiteness display lamp 42. Next, brown rice is put into the brown rice hopper 2. The brown rice sensor 11 detects that brown rice is present in the brown rice hopper 2 and transmits it to the control unit 43. It should be noted that the procedure for setting the degree of whitening and adding brown rice may be reversed.

続いて運転スイッチ38を押し、精米を開始する。同時にメインモータ23とファンモータ36が起動し、搗精ロール21と除糠ファン6が運転を開始する。また、精米初期の未精白米を排出しないように、搗精室5内に玄米を取り込む前に抵抗板8で搗精室出口10をふさぐため、抵抗モータ32が付勢力を大きくする(抵抗スプリング25を圧縮する)方向に運転を開始し、抵抗初期値F1で停止して待機する。ここで、工程の時間短縮のために、運転開始前に付勢力を抵抗初期値F1として待機しておいてもよい。   Subsequently, the operation switch 38 is pressed to start the rice milling. At the same time, the main motor 23 and the fan motor 36 are started, and the milling roll 21 and the fan removal fan 6 start operation. In addition, the resistance motor 32 increases the biasing force (the resistance spring 25 is used) to block the milling chamber outlet 10 with the resistance plate 8 before taking the brown rice into the milling room 5 so as not to discharge the unmilled white rice at the initial stage of milling. The operation starts in the direction of compression), stops at the initial resistance value F1, and waits. Here, in order to shorten the process time, the urging force may be set as the resistance initial value F1 before the operation is started.

制御部43は、メインモータ23およびファンモータ36への出力と、玄米センサ11からの玄米有り信号および抵抗初期値F1の確認後、繰出しモータ20へ運転開始信号を出力する。繰出しモータ20の運転に伴い、繰出し羽根13が回転し、玄米ホッパ2の玄米が空間部14へと流入して搗精室入口9へ供給される。   The control unit 43 outputs an operation start signal to the feeding motor 20 after confirming the output to the main motor 23 and the fan motor 36, the brown rice presence signal from the brown rice sensor 11 and the resistance initial value F1. With the operation of the feeding motor 20, the feeding blade 13 rotates, and the brown rice of the brown rice hopper 2 flows into the space portion 14 and is supplied to the milling chamber inlet 9.

精米開始前には搗精室5内の残留米が無いので、そのまま連続して玄米の供給を続けると、未精白米が搗精室出口10より排出されることになる。それを防止するため、本精米機では初期精米を行う。初期精米では、搗精室出口10をふさいでいる抵抗板8を押し切って未精白米が排出しない適量分だけの玄米(初期精米量A1、本実施例では300g)を取り込む。   Since there is no residual rice in the milling chamber 5 before the start of milling, if the supply of brown rice is continued as it is, unmilled white rice will be discharged from the milling chamber outlet 10. In order to prevent this, this rice milling machine performs initial rice milling. In the initial rice milling, the resistance plate 8 that blocks the milling chamber outlet 10 is pushed through to take in an appropriate amount of brown rice (initial rice milling amount A1, 300 g in this embodiment) that does not discharge unmilled white rice.

一区画の空間部14には、30gの玄米を収納できる。よって、空間部14十区画分の玄米を搗精室5に供給することで、搗精室5内は初期精米を行うのに充分な300gの玄米で満たされ、抵抗板8を押し切って未精白米が排出されることもない。カウントセンサ16は、繰出し羽根13の通過回数を計測し、その数値は制御部43へと送られ、通過回数が十カウントとなった時点で繰出しモータ20の運転を停止する。なお、設定された精白度が低い場合、玄米の供給量はもっと少なくてもよい。   A space 14 of one section can store 30 g of brown rice. Therefore, by supplying the 14 mills of brown space to the milling room 5, the milling room 5 is filled with 300 g of brown rice sufficient to perform the initial milling, and the resistance plate 8 is pushed through and unmilled white rice is removed. It is not discharged. The count sensor 16 measures the number of passages of the feeding blade 13, and the numerical value is sent to the control unit 43, and the operation of the feeding motor 20 is stopped when the number of passages reaches ten counts. In addition, when the set degree of milling is low, the supply amount of brown rice may be smaller.

搗精室5内に供給された玄米は搗精ロール21の回転で精米作用を受ける。時間の経過とともに精米が進行し玄米表面から剥離された米糠は、除糠金網22から排出され除糠ファン6で機外のサイクロンへ搬送される。   The brown rice supplied into the milling room 5 is subjected to the milling action by the rotation of the milling roll 21. The rice bran that has been polished and peeled off from the surface of the brown rice as time passes is discharged from the stripping wire net 22 and conveyed to the cyclone outside the machine by the stripping fan 6.

初期精米を開始してから一定時間(初期精米時間T1)が経過すると、制御部43は定量供給手段3を駆動させて空間部14一区画分(初期追加精米量A2、30g)の玄米を搗精室5内へ追加供給するよう一カウント分の運転指令を出す。精米の進行に伴い米糠が取り除かれた米の量は初期精米量A1より少なくなって270gほどになっていたが、追加玄米の供給を受けて300gになり搗精室5内の圧力も回復し精白度を上げて精米を継続することとなる。なお、設定された精白度が特に低い場合には、精米によって取り除かれる米糠の量が少ないので、玄米の追加は必要ない。   When a certain period of time (initial rice milling time T1) has elapsed since the start of the initial rice milling, the control unit 43 drives the quantitative supply means 3 to scour the brown rice of the space portion 14 (one initial additional rice milling amount A2, 30 g). An operation command for one count is issued so that additional supply is made into the chamber 5. The amount of rice from which the rice bran was removed as the milling progressed was less than the initial milled rice amount A1 to about 270 g. However, the supply of additional brown rice increased to 300 g, and the pressure in the milling chamber 5 was recovered and the whitening was completed. The rice will be continued at a higher level. If the set milling degree is particularly low, the amount of rice bran removed by the milled rice is small, so it is not necessary to add brown rice.

玄米の追加供給後、精白度が安定する時間(初期追加精米時間T2)の経過を待って、制御部43は使用者が設定した精白度に対応する抵抗通常値F2になるように抵抗装置7に運転指令を出す。抵抗モータ32は抵抗ネジ軸26を回転させ、それに伴ってナット体27が移動し、抵抗スプリング25の圧縮量を弱くなる方に変化させて抵抗板8の付勢力を調整する。定量供給手段3は、抵抗装置7の設定完了を待って連続回転の運転を開始し、搗精室5内に連続で玄米供給を行い連続精米に移行する。   After the additional supply of brown rice, the control unit 43 waits for the time for the degree of milling to stabilize (initial addition milling time T2), and the control unit 43 sets the resistance device 7 so that the resistance normal value F2 corresponds to the milling degree set by the user. An operation command is issued. The resistance motor 32 rotates the resistance screw shaft 26, and the nut body 27 is moved accordingly, and the compression amount of the resistance spring 25 is changed to become weaker to adjust the urging force of the resistance plate 8. The fixed-quantity supply means 3 waits for the setting of the resistance device 7 to be completed, starts continuous rotation operation, continuously supplies brown rice into the milling chamber 5, and shifts to continuous rice polishing.

初期精米で精米された米は、搗精室5に連続して供給される後続米に押し出され搗精室出口10から白米となって排出される。また、後続米は搗精室5内の米が充満している状態で、かつ抵抗板8の付勢力が設定されているので安定した精白度で精米が継続し排出される。このように、初期精米の精白度は玄米の追加供給制御を行うことで、連続精米に移行した後の精白度と何ら変わらない品質に仕上がる。その後、玄米ホッパ2の玄米が存在している間、精米は継続される。   The rice polished by the initial milled rice is pushed out into the succeeding rice continuously supplied to the milling chamber 5 and discharged as white rice from the milling chamber outlet 10. Further, the succeeding rice is in a state where rice in the milling chamber 5 is full, and since the urging force of the resistance plate 8 is set, the polished rice is continuously discharged with a stable degree of milling. In this way, the milling degree of the initial milled rice is finished to a quality that is not different from the milling degree after shifting to continuous milling by performing additional supply control of brown rice. Thereafter, while the brown rice of the brown rice hopper 2 is present, the polished rice is continued.

玄米ホッパ2の玄米が無くなると後続米も無くなるため、搗精室5内には米が停滞する。しかもこの状態での搗精室5内の米は、搗精室出口10付近は白米になっているものの、搗精室入口9にかけては精米が充分されていない半搗き米の状態で、そのまま排出すると未精白米が白米に混入することになる。それを防ぐために、連続精米に引き続き、初期精米と同様な終了精米を行う。玄米ホッパ2の玄米が規定量に達すると、玄米センサ11は信号を制御部43へ送信し、それに反応して制御部43は定量供給手段3へ運転停止の指令を、抵抗装置7へ抵抗終了値F3までの運転指令を発信し、抵抗板8が搗精室出口10をふさぎ白米の排出を遮断して、終了精米へ移行する。   When the brown rice in the brown rice hopper 2 disappears, the subsequent rice also disappears, so the rice stagnates in the milling room 5. Moreover, the rice in the milling chamber 5 in this state is white rice near the milling chamber outlet 10, but it is in the state of half-milled rice that does not have enough milled rice to reach the milling chamber entrance 9. White rice will be mixed into white rice. In order to prevent this, continuous milling is followed by finishing milling similar to the initial milling. When the brown rice in the brown rice hopper 2 reaches a specified amount, the brown rice sensor 11 transmits a signal to the control unit 43, and in response to this, the control unit 43 sends a stop command to the quantitative supply means 3 and ends the resistance to the resistance device 7. The operation command up to the value F3 is transmitted, the resistance plate 8 blocks the milling chamber outlet 10 and shuts off the discharge of the white rice, and the process proceeds to the finished rice polishing.

終了精米時も初期精米時と同様で、搗精室5内が充満するほどの米(300g)を確保し、米の供給および排出を遮断して精米するが、定量供給手段3を停止して後続米が無くなっても、搗精室5全体が搗精室出口10を下側にして傾斜していることもあって、搗精室出口10から排出される米を遮断させるには抵抗板8の付勢力が充分でなく、搗精室5内の米は排出を続け充満に必要な米の確保ができない。そのため、玄米センサ11からの信号受信後、速やかに抵抗板8の付勢力を抵抗終了値F3にするよう抵抗装置7を運転させる制御が必要となる。   At the time of finishing rice milling, it is the same as at the time of initial rice milling, securing enough rice (300 g) to fill the milling room 5 and shutting off rice supply and discharge, but polishing the rice, but stopping the quantitative supply means 3 Even if the rice runs out, the entire semen chamber 5 is inclined with the semen chamber outlet 10 facing downward, and the urging force of the resistance plate 8 is used to block the rice discharged from the semen chamber outlet 10. It is not enough, and the rice in the milling room 5 continues to be discharged and the rice necessary for filling cannot be secured. Therefore, after receiving the signal from the brown rice sensor 11, it is necessary to control the resistance device 7 so that the urging force of the resistance plate 8 is immediately set to the resistance end value F3.

しかしながら、通常の精米状態の抵抗板8の付勢力から搗精室出口10をふさぎ切る付勢力に強めるまでのナット体27の移動時間が必要となり、その間にもわずかな量であるものの搗精室出口10からは白米の排出が続く。また、使用者が設定した精白度によっては、抵抗板8で搗精室出口10をふさぎ切るまでの時間が異なり、その間に排出される白米量も多い場合や少ない場合があり、それによって搗精室5内に残る米の量にばらつきが生じる。米が搗精室5内を充満するには300gの量が必要で、その量がわずかでも少なくなると終了精米時の精白度が低下する。   However, it takes time for the nut body 27 to move from the normal urging force of the resistance plate 8 to the urging force that closes the scouring chamber outlet 10, and the scouring chamber outlet 10 is a small amount during that time. Will continue to discharge white rice. Further, depending on the degree of milling set by the user, the time until the milling chamber outlet 10 is blocked by the resistance plate 8 is different, and the amount of white rice discharged during that period may be large or small, and accordingly the milling chamber 5 Variations in the amount of rice left inside. An amount of 300 g is required for the rice to fill the milling chamber 5, and if the amount is slightly reduced, the degree of milling at the time of finishing rice polishing is lowered.

これを受けて、制御部43は玄米センサ11からの信号受信とほぼ同時に定量供給手段3を停止するが、その時点から抵抗板8が搗精室出口10をふさぎ切るまでの間に排出される白米の補充分を見越した玄米量を玄米ホッパ2内に残す。残す玄米量は一区画分あるいは二区画分の空間部14を満たす量(30〜60g)が適量(前述の規定量)であり、玄米センサ11はそれに見合った位置に取り付けてある。制御部43は、定量供給手段3を停止させると同時に、抵抗板8の付勢力を抵抗終了値F3にするよう抵抗装置7を運転する。付勢力が抵抗終了値F3に到達するのを待って、定量供給手段3は再び運転を初め、玄米ホッパ2に残った玄米を終了精米工程の追加玄米として搗精室5へ供給する。定量供給手段3は追加玄米の供給を終えて再び停止するが、この際余裕を見て定量供給手段3の空間部14で十区画(カウント)程度の運転後停止する。また、追加玄米の搗精室5内への取り込みのタイミングは、付勢力が抵抗終了値F3へ変更されてからではなく、変更途中の米が排出しなくなる時点でもよい。追加玄米を供給した後、定量供給手段3が停止するのは、終了精米途中に誤って玄米ホッパ2に次の精米分の玄米を投入されても、搗精室5内にその玄米が供給されるのを防止する目的もある。   In response to this, the control unit 43 stops the quantitative supply means 3 almost simultaneously with the reception of the signal from the brown rice sensor 11, but the white rice discharged from that time until the resistance plate 8 blocks the semen exit 10. The amount of brown rice in anticipation of supplementation is left in the brown rice hopper 2. The amount of brown rice to be left is an appropriate amount (30 to 60 g) satisfying the space 14 for one or two compartments (the above-mentioned prescribed amount), and the brown rice sensor 11 is attached to a position corresponding to it. The control unit 43 operates the resistance device 7 so that the urging force of the resistance plate 8 is set to the resistance end value F3 at the same time as stopping the quantitative supply means 3. Waiting for the urging force to reach the resistance end value F3, the quantitative supply means 3 starts operation again, and supplies the brown rice remaining in the brown rice hopper 2 to the milling room 5 as additional brown rice in the finishing rice polishing process. The fixed-quantity supply means 3 finishes the supply of the additional brown rice and then stops again. At this time, with a margin, the fixed-quantity supply means 3 stops in the space portion 14 of the fixed-quantity supply means 3 after operation of about ten sections (counts). In addition, the timing of taking the additional brown rice into the milling chamber 5 may not be after the urging force is changed to the resistance end value F3, but at the time when the rice during the change is not discharged. After the additional brown rice is supplied, the fixed amount supply means 3 stops. Even if the brown rice hopper 2 is mistakenly charged with the next polished rice in the middle of the finished rice polishing, the brown rice is supplied into the milling chamber 5. There is also a purpose to prevent this.

追加玄米の供給を受けて、搗精室5内の米の量は充満に必要な300gを確保することができ、搗精圧力を維持しながら終了精米を継続する。また、追加玄米量が多すぎて搗精室5内の充満量を超える場合は、追加後続米に押し出されて搗精室出口10から白米として排出され、規定の充満量になれば抵抗板8が搗精室出口10をふさぎ終了精米を継続する。終了精米時の搗精室5内の米の状態は連続精米からの移行であって、そのため搗精室出口10付近の米はすでに白米となっている。また、搗精室入口9側の米も白米にはなっていないものの、精米がある程度進行した半搗き米の状態であり、そのため追加玄米供給後は精米の進行に伴い搗精室5外に排出される米糠分も少なく、精米圧力が低下することはない。   By receiving the supply of additional brown rice, the amount of rice in the milling room 5 can be secured to 300 g necessary for filling, and the finished milling is continued while maintaining the milling pressure. In addition, when the amount of additional brown rice is too large and exceeds the filling amount in the milling room 5, it is pushed out to the additional succeeding rice and discharged as white rice from the milling room outlet 10. Close the room outlet 10 and continue milling. The state of the rice in the milling room 5 at the time of the finished milling is the transition from continuous milling, so that the rice near the milling room outlet 10 is already white rice. In addition, although the rice on the side of the milling room entrance 9 is not white rice, it is in the state of half-milled rice in which the milled rice has progressed to some extent. There is little rice bran content and the rice milling pressure will not decrease.

終了精米開始から一定時間(終了精米時間T3)経過後、抵抗装置7を付勢力が弱まる方向に運転し、抵抗板8を搗精室出口10から開放させるとともに除糠ファン6の運転を停止させる。搗精室5全体が、搗精室出口10が低くなるように傾斜しているので、搗精室5内の白米は搗精ロール21の攪拌力により機外へ排出される。また、すでに除糠ファン6の運転も停止しており、吸引風の作用で除糠金網22に吸い付いている白米もすべて機外に排出され、搗精室5の残留米がなくなるだけの時間(白米排出時間T4)経過後、メインモータ23が停止しすべての運転を停止する。   After a lapse of a certain time from the start of the finished rice milling (finished rice milling time T3), the resistance device 7 is operated in a direction in which the urging force is weakened, the resistance plate 8 is opened from the milling chamber outlet 10, and the operation of the dehulling fan 6 is stopped. Since the entire milling chamber 5 is inclined so that the milling chamber outlet 10 is lowered, the white rice in the milling chamber 5 is discharged to the outside by the stirring force of the milling roll 21. Moreover, the operation of the fan 6 has already been stopped, and all the white rice sucked by the wire mesh 22 by the action of the suction air is discharged outside the machine, so that there is no residual rice in the milling chamber 5 ( After the white rice discharge time T4) has elapsed, the main motor 23 stops and stops all operations.

なお、設定された精白度が低い場合、必要とされる精米圧力が低いため、終了精米時において、抵抗板8が搗精室出口10をふさぎ切るまでに白米が排出して搗精室5内の米の量が減少しても問題はない。そこで、このような場合には以下のように玄米を追加供給しないような制御をすることが好ましい。すなわち、制御部43は、玄米センサ11からの信号を受信してもすぐに定量供給手段3を停止せず、玄米ホッパ2内の残玄米をすべて搗精室5に供給できるだけの時間(残玄米供給時間T5)経過後、定量供給手段3を停止する。その後、制御部43は、抵抗板8の付勢力を抵抗終了値F3にするよう抵抗装置7を運転し、精米を続ける。そして、終了精米時間T3が経過した後の処理は、玄米を追加した場合と同様である。   If the set milling degree is low, the required rice milling pressure is low, so at the time of finishing rice milling, the white rice is discharged before the resistance plate 8 closes the milling chamber outlet 10, and the rice in the milling chamber 5 is discharged. There is no problem even if the amount of is reduced. Therefore, in such a case, it is preferable to perform control not to additionally supply brown rice as follows. That is, the control unit 43 does not stop the quantitative supply means 3 immediately after receiving the signal from the brown rice sensor 11 and can supply all the remaining brown rice in the brown rice hopper 2 to the milling room 5 (residual brown rice supply). After the time T5), the quantitative supply means 3 is stopped. Thereafter, the control unit 43 operates the resistance device 7 so that the urging force of the resistance plate 8 becomes the resistance end value F3, and continues the rice milling. And the process after completion | finish rice milling time T3 passes is the same as the case where brown rice is added.

以下の表1に、本実施例における各値の設定値を示す。抵抗値の値は、抵抗ネジ軸26の回転数で表し、値が大きいほど抵抗板8の付勢力が大きくなる。
Table 1 below shows the setting values of each value in this example. The value of the resistance value is represented by the number of rotations of the resistance screw shaft 26, and the urging force of the resistance plate 8 increases as the value increases.

本発明の精米機は上記実施例に限定されるものではない。例えば定量供給手段3は、一定量ずつの供給が可能であれば異なる構造でもよく、その他各構成要素や制御の各値も適宜変更されるものである。また、本精米機に種々の付帯設備が付属するものであってもよい。   The rice milling machine of the present invention is not limited to the above embodiment. For example, the quantitative supply means 3 may have a different structure as long as a constant amount can be supplied, and other constituent elements and control values are appropriately changed. Moreover, various incidental facilities may be attached to the rice mill.

本発明の精米機の一部破砕した正面図。The front view which partially crushed the rice mill of this invention. 定量供給手段の断面図。Sectional drawing of a fixed-quantity supply means. (a)定量供給手段の正面図、(b)定量供給手段の側面図。(A) Front view of fixed quantity supply means, (b) Side view of fixed quantity supply means. (a)抵抗装置および抵抗板の説明図(付勢力弱)、(b)抵抗装置および抵抗板の説明図(付勢力強)。(A) Explanatory drawing (resistance force weak) of a resistance apparatus and a resistance board, (b) Explanatory drawing (resistance force strong) of a resistance apparatus and a resistance board. (a)抵抗板の断面図、(b)抵抗板の正面図、(c)抵抗板の別の実施例の正面図。(A) Cross section of resistance plate, (b) Front view of resistance plate, (c) Front view of another embodiment of resistance plate. 搗精室出口の断面図。Sectional drawing of a sperm chamber exit. (a)搗精室出口から米粒が排出される状態を示す説明図、(b)搗精室出口を抵抗板でふさいだ状態を示す説明図。(A) Explanatory drawing which shows the state by which rice grain is discharged | emitted from a sperm chamber exit, (b) Explanatory drawing which shows the state which covered the sperm chamber outlet with the resistance board. 操作盤の正面図。The front view of an operation panel. 精米機の入出力系を示すブロック図。The block diagram which shows the input / output system of a rice mill. 精米機の動作シーケンスを示すフローチャート。The flowchart which shows the operation | movement sequence of a rice mill.

符号の説明Explanation of symbols

2 玄米ホッパ
3 定量供給手段
5 搗精室
8 抵抗板
10 搗精室出口
21 搗精ロール
35 突状体
43 制御部
2 Brown rice hopper 3 Constant supply means 5 Milling room 8 Resistance plate 10 Milling room outlet 21 Milling roll 35 Projection body 43 Control unit

Claims (6)

搗精室を有する精米機により玄米を精米する精米方法であって、
初期精米および/または終了精米において、前記搗精室内に規定量の米を保有する状態で、前記搗精室への玄米の供給および搗精室からの白米の排出を遮断し、一定量の玄米について精米処理を行い、該精米処理途中に前記搗精室に、減少した米を補充して前記搗精室内を充満させる分量の玄米を追加供給することを特徴とする精米方法。
A rice milling method for milling brown rice with a rice mill having a milling room,
In the initial milled rice and / or the finished milled rice, the supply of the brown rice to the milling room and the discharge of the white rice from the milling room are blocked while a predetermined amount of rice is held in the milling chamber, and a certain amount of the brown rice is processed. The rice milling method is characterized in that during the rice milling process, an additional amount of brown rice is supplied to the milling chamber to replenish the reduced rice and fill the milling chamber .
玄米を投入する玄米ホッパ(2)と、搗精ロール(21)を有する搗精室(5)と、該搗精室(5)の搗精室出口(10)に設けてある抵抗板(8)と、前記玄米ホッパ(2)と前記搗精室(5)との間に設け該搗精室(5)内に玄米を一定量ずつ供給する定量供給手段(3)と、前記搗精ロール(21)および前記抵抗板(8)ならびに前記定量供給手段(3)の動作を制御する制御部(43)と、を備え、
前記制御部(43)が、初期精米および/または終了精米において、前記搗精室(5)内に規定量の米を保有した状態で、前記定量供給手段(3)による前記搗精室(5)への玄米の供給を停止し、かつ前記抵抗板(8)の付勢力を強めて前記搗精室(5)からの白米の排出を遮断して、前記搗精ロール(21)による玄米の精米処理を行い、該精米処理途中に、前記定量供給手段(3)の運転を再開して前記搗精室(5)に、減少した米を補充して前記搗精室(5)内を充満させる分量の玄米を追加供給することを特徴とする精米機。
A brown rice hopper (2) for introducing brown rice, a milling chamber (5) having a milling roll (21), a resistance plate (8) provided at the milling chamber outlet (10) of the milling chamber (5), A quantitative supply means (3) provided between the brown rice hopper (2) and the milling chamber (5) for supplying a certain amount of brown rice into the milling chamber (5), the milling roll (21) and the resistance plate (8) and a control unit (43) for controlling the operation of the quantitative supply means (3),
In the state where the control unit (43) retains a predetermined amount of rice in the milled rice mill (5) in the initial milled rice and / or the finished milled rice, the quantitative feeding means (3) supplies the milled rice mill (5). The supply of brown rice is stopped, and the urging force of the resistance plate (8) is increased to block the discharge of white rice from the milling room (5), and the milled rice is treated with the milling roll (21). In the middle of the rice milling process, the operation of the quantitative supply means (3) is resumed, and an amount of brown rice is added to the milling room (5) to replenish the reduced rice and fill the milling room (5). Rice milling machine characterized by supplying.
玄米を投入する玄米ホッパ(2)と、搗精ロール(21)を有する搗精室(5)と、該搗精室(5)の搗精室出口(10)に設けてある抵抗板(8)と、前記玄米ホッパ(2)と前記搗精室(5)との間に設け該搗精室(5)内に玄米を一定量ずつ供給する定量供給手段(3)と、前記搗精ロール(21)および前記抵抗板(8)ならびに前記定量供給手段(3)の動作を制御する制御部(43)と、を備え、
前記制御部(43)が、白米の排出を遮断するために前記抵抗板(8)の付勢力を抵抗初期値(F1)に設定し、前記定量供給手段(3)を運転して初期精米量(A1)の玄米を搗精室(5)へ供給後、前記定量供給手段(3)を停止し、精米を開始してから玄米の精米に要する時間(初期精米時間(T1))経過後、初期追加精米量(A2)の玄米を追加供給し、精白度が安定するまでの時間(初期追加精米時間(T2))経過後、前記抵抗板(8)の付勢力を設定された精白度に応じた抵抗通常値(F2)に設定し、前記定量供給手段(3)を連続運転して連続精米に移行することを特徴とする精米機。
A brown rice hopper (2) for introducing brown rice, a milling chamber (5) having a milling roll (21), a resistance plate (8) provided at the milling chamber outlet (10) of the milling chamber (5), A quantitative supply means (3) provided between the brown rice hopper (2) and the milling chamber (5) for supplying a certain amount of brown rice into the milling chamber (5), the milling roll (21) and the resistance plate (8) and a control unit (43) for controlling the operation of the quantitative supply means (3),
The control unit (43) sets the urging force of the resistance plate (8) to an initial resistance value (F1) in order to cut off the discharge of white rice, and operates the quantitative supply means (3) to start initial rice milling amount. After supplying the brown rice of (A1) to the milling room (5), the quantitative supply means (3) is stopped, and after the time required for the polishing of the brown rice (initial rice polishing time (T1)) has elapsed, Depending on the degree of milling to which the urging force of the resistance plate (8) is set after the time until the milling degree is stabilized (the initial additional milling time (T2)) after the additional amount of brown rice (A2) is additionally supplied The normal rice milling machine is set to a normal resistance value (F2), and the constant supply means (3) is continuously operated to shift to continuous rice milling.
玄米を投入する玄米ホッパ(2)と、搗精ロール(21)を有する搗精室(5)と、該搗精室(5)の搗精室出口(10)に設けてある抵抗板(8)と、前記玄米ホッパ(2)と前記搗精室(5)との間に設け該搗精室(5)内に玄米を一定量ずつ供給する定量供給手段(3)と、前記搗精ロール(21)および前記抵抗板(8)ならびに前記定量供給手段(3)の動作を制御する制御部(43)と、を備え、
前記制御部(43)が、連続精米中に前記玄米ホッパ(2)内の残玄米が規定量に達すると、前記定量供給手段(3)を停止し、白米の排出を遮断するために前記抵抗板(8)の付勢力を抵抗終了値(F3)に設定し、前記定量供給手段(3)を運転して玄米ホッパ(2)内に残った玄米を前記搗精室(5)へ追加供給し、玄米の精米に要する時間(終了精米時間(T3))経過後、前記抵抗板(8)の付勢力を弱め、前記抵抗板(8)を前記搗精室出口(10)から開放し、前記搗精室(5)内の残留米を排出することを特徴とする精米機。
A brown rice hopper (2) for introducing brown rice, a milling chamber (5) having a milling roll (21), a resistance plate (8) provided at the milling chamber outlet (10) of the milling chamber (5), A quantitative supply means (3) provided between the brown rice hopper (2) and the milling chamber (5) for supplying a certain amount of brown rice into the milling chamber (5), the milling roll (21) and the resistance plate (8) and a control unit (43) for controlling the operation of the quantitative supply means (3),
When the remaining brown rice in the brown rice hopper (2) reaches a specified amount during continuous rice polishing, the control unit (43) stops the quantitative supply means (3) and the resistance to shut off the discharge of white rice The urging force of the plate (8) is set to the resistance end value (F3), and the fixed amount supply means (3) is operated to supply the brown rice remaining in the brown rice hopper (2) to the milling room (5). After the time required for rice polishing of brown rice (end rice polishing time (T3)), the urging force of the resistance plate (8) is weakened, the resistance plate (8) is opened from the milling chamber outlet (10), A rice milling machine characterized by discharging residual rice in the chamber (5).
前記制御部(43)が、設定された精白度が高いほど、抵抗初期値(F1)、抵抗終了値(F3)、初期精米量(A1)、初期追加精米量(A2)、初期精米時間(T1)、初期追加精米時間(T2)、終了精米時間(T3)の各値を大きい値に設定することを特徴とする請求項3または4記載の精米機。 As the set milling degree is higher, the controller (43) has an initial resistance value (F1), a resistance end value (F3), an initial rice milling amount (A1), an initial additional rice milling amount (A2), an initial rice milling time ( 5. The rice milling machine according to claim 3 , wherein each value of T1), initial additional rice milling time (T2) and end rice milling time (T3) is set to a large value. 前記抵抗板(8)が、円盤状であり、円の中心軸に対して回動および首振り自在に保持されており、かつ搗精室(5)側の面に放射状の突状体(35)を有することを特徴とする請求項2、3、4または5記載の精米機。
The resistance plate (8) has a disc shape, is held so as to be rotatable and swingable with respect to the central axis of the circle, and has a radial protrusion (35) on the surface of the semen chamber (5). 6. A rice mill according to claim 2, 3, 4 or 5, wherein
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