JP2012162298A - Instrument for measuring and subdividing powder and method of measuring and subdividing powder - Google Patents

Instrument for measuring and subdividing powder and method of measuring and subdividing powder Download PDF

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JP2012162298A
JP2012162298A JP2011024406A JP2011024406A JP2012162298A JP 2012162298 A JP2012162298 A JP 2012162298A JP 2011024406 A JP2011024406 A JP 2011024406A JP 2011024406 A JP2011024406 A JP 2011024406A JP 2012162298 A JP2012162298 A JP 2012162298A
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screw feeder
powder
small
granular material
filling
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JP5869766B2 (en
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Fumio Kato
文雄 加藤
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Tsukasa Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To achieve space saving of an instrument for measuring and subdividing powder and to improve cutout precision while keeping discharging rate of the powder.SOLUTION: The instrument for measuring and subdividing powder includes: an agitating part 3 for agitating the powder; a large screw feeder 41 arranged horizontally so as to communicate with the agitating part 3; a large discharge port 415 communicating with the large screw feeder 41; a shutter 416 which is an opening/closing valve for freely opening/closing the large discharge port 415; a small screw feeder 42 arranged under the large screw feeder 41 so as to communicate through a bypass 43; and a small discharge port 425 communicating with the small screw feeder 42, and operates the large screw feeder 41 to discharge the powder by the large amount, closes the shutter 416 when the amount is near a constant value, and operates the small screw feeder 42 in order to discharge the powder by the small amount.

Description

本発明は、粉粒体を袋等の容器に小分け計量し排出する粉粒体小分け計量装置、特に、小麦粉等の食品、化学品、薬品の粉体を排出する粉粒体小分け計量装置に関する。   The present invention relates to a powder subdivision weighing device that subdivides and measures powder into containers such as bags, and more particularly to a powder subdivision weighing device that discharges food such as wheat flour, chemicals, and chemicals.

粉粒体小分け計量装置には粉粒体の切り出し手段であるスクリューを垂直に設けるものと水平に設けるものとがある。スクリューを垂直に設けるものとして特許文献１が挙げられ、スクリューを水平に設けるものとして特許文献２が挙げられる。   There are two types of powder particle measuring devices: a screw that cuts out powder particles and a screw that is provided vertically. Patent Document 1 is cited as an example in which the screw is provided vertically, and Patent Document 2 is provided as an example in which the screw is provided horizontally.

特許文献１に記載の発明は、吐出口からの粉粒体の吐出効率を高め、高速且つ高精度にして粉粒体の定量充填が可能な粉粒体の充填装置を提供することを課題とし、上端にホッパ４を有し、下端に吐出口２４を有したファネル２と、ファネル２内に回転可能に収容され、拡径スクリュー部１４がホッパ４に突出したオーガスクリュー１０とを備え、拡径スクリュー部１４の上端とホッパ４の内周面との間には所定の隙間Ｇが確保されていることを特徴としたものである。   An object of the invention described in Patent Document 1 is to provide a powder and particle filling device capable of increasing the discharge efficiency of particles from a discharge port, and capable of quantitative filling of particles at high speed and high accuracy. A funnel 2 having a hopper 4 at the upper end and a discharge port 24 at the lower end, and an auger screw 10 rotatably accommodated in the funnel 2 and having a diameter-expanding screw portion 14 protruding from the hopper 4. A predetermined gap G is secured between the upper end of the diameter screw portion 14 and the inner peripheral surface of the hopper 4.

特許文献２に記載の発明は、粉粒体を一定重量ずつ袋詰めする粉粒体充填装置において、運転条件を決定するパラメータを自動的に最適なものに変更し、袋に充填する量を目標量に精度よく近づけながら充填にかかる時間をより短縮することができる粉粒体充填装置を提供することを課題とし、スクリューフィーダをモータによって回転させ、前記スクリューフィーダにより粉粒体を押し出すことによって該粉粒体を充填袋に充填する粉粒体充填装置において、充填の際に、始めに大出しを行い、充填すべき粉粒体のうち充填未完了分の重量が無段階制御量に達したならば、大出しから無段階減速へと移行する無段階制御方式の制御を行い、停止直前流量に基づいて前記無段階制御量を調整する制御手段を備えたことを特徴とするものである。   The invention described in Patent Document 2 automatically sets the parameters for determining the operating conditions to the optimum one in the powder filling apparatus for packing the powder by a constant weight, and targets the amount to be filled in the bag. An object of the present invention is to provide a powder and particle filling device capable of reducing the time required for filling while being close to the amount with high accuracy. The screw feeder is rotated by a motor and the powder is pushed out by the screw feeder. In the powder filling device that fills the filling material into the filling bag, first, when filling, the large amount of the powder to be filled, the weight of unfilled powder reached the stepless control amount If so, it is characterized by comprising a control means for performing a control of a stepless control system for shifting from large out to stepless deceleration and adjusting the stepless control amount based on the flow rate immediately before stopping.

特開２００２−０１９７２９JP 2002-019729 A 特開２００２−１６６９０２JP 2002-166902 A

しかし、特許文献１のような垂直に縦置きするスクリューを用いるものでは、垂直に大型となるため高さに制約のある場所では使用できなかった。また、特許文献２のようなスクリューを水平にして横置きする従来の粉粒体充填装置は、計量終盤で充填駆動部の回転数を減少させることにより送出量を調整しているが、このような駆動部の回転数をインバータ制御により変化させる方法では、充填駆動部の回転数を無段階に調節できるとしても、その充填駆動部が大口径の一軸のスクリューに依存するため、計量精度に限界があった。一方、充填駆動部を小口径のものとして計量精度を向上させようとすると粉粒体の充填に時間がかかり過ぎてしまうという問題がある。上記のように充填駆動部を大口径のスクリューの一軸をもって粉粒体の充填を行い、精度を高めるべくインバータ制御を用いたとしても、実用的な充填速度の下では切り出し誤差があり、要求される精度を十分に満たすことはできなかった。   However, in the case of using a vertically-positioned screw as in Patent Document 1, it cannot be used in a place where the height is restricted because it is vertically large. In addition, the conventional powder and particle filling apparatus such as Patent Document 2 in which the screw is horizontally placed horizontally adjusts the delivery amount by reducing the rotation speed of the filling drive unit at the end of the measurement. In the method of changing the rotation speed of the drive unit by inverter control, even if the rotation speed of the filling drive unit can be adjusted steplessly, the filling drive unit depends on a single screw with a large diameter, so the measurement accuracy is limited. was there. On the other hand, there is a problem in that it takes too much time to fill the granular material when the filling drive unit has a small diameter and attempts to improve the measurement accuracy. Even if the filling drive unit is filled with granular material with a single screw of a large diameter screw and inverter control is used to improve accuracy, there is a cutting error under practical filling speed, which is required. It was not possible to sufficiently satisfy the accuracy.

そこで上記課題に鑑み、本発明は、粉粒体小分け計量装置の省スペース化を図り、粉粒体の排出速度を保ちつつ、切り出し精度を向上させることを課題とする。   Then, in view of the said subject, this invention makes it a subject to aim at space saving of a granular material subdivision weighing | measuring apparatus, and to improve cutting-out precision, maintaining the discharge speed of a granular material.

上記課題を解決するため、本発明は、粉粒体を移送する大型スクリューフィーダと、該大型スクリューフィーダと連通する大吐出口と、前記大型スクリューフィーダの下に連通して併設される小型スクリューフィーダと、該小型スクリューフィーダと連通する小吐出口と、前記大吐出口または小吐出口から排出される粉粒体を小分け計量する計量部と、を備えることを特徴とする粉粒体小分け計量装置である。   In order to solve the above-mentioned problems, the present invention provides a large screw feeder for transferring a granular material, a large discharge port communicating with the large screw feeder, and a small screw feeder provided in communication with the large screw feeder. And a small discharge port that communicates with the small screw feeder, and a measuring unit that measures and divides the granular material discharged from the large discharge port or the small discharge port. It is.

また本発明は、大型スクリューフィーダを回転させることにより、粉粒体を大量に切り出して排出し、これと同時に排出された該粉粒体を計量するステップと、目標とする前記粉粒体の排出量に近づいたら、前記大型スクリューフィーダの大吐出口からの粉粒体の切り出しを停止するステップと、前記大型スクリューフィーダの下に連通して併設される小型スクリューフィーダを回転させることにより、前記粉粒体を少量に切り出して排出し、これと同時に排出された該粉粒体を計量するステップと、目標とする前記粉粒体の排出量に達したら前記小型スクリューフィーダの回転を止め、前記粉粒体の排出を終了するステップと、からなることを特徴とする粉粒体小分け計量方法である。   Further, the present invention provides a step of rotating a large screw feeder to cut out and discharge a large amount of powder particles, and simultaneously measuring the discharged powder particles, and discharging the target powder particles When the amount approaches, the step of stopping the cutting of the granular material from the large discharge port of the large screw feeder, and rotating the small screw feeder communicated under the large screw feeder to rotate the powder A step of measuring and discharging the granular material discharged at the same time, and stopping the rotation of the small screw feeder when the target discharged amount of the granular material is reached. And a step of ending the discharge of the granular material.

本発明において、前記大吐出口を自在に開閉する大吐出口開閉弁を設けることが好ましい。   In the present invention, it is preferable to provide a large discharge opening / closing valve that freely opens and closes the large discharge opening.

本発明において前記攪拌部が、粉粒体を篩うシーブと、前記シーブ内で水平方向に配置される回転羽根と、を有するロータリーシフタであることを特徴としてもよい。   In the present invention, the stirring unit may be a rotary shifter having a sheave for sieving a granular material and a rotary blade arranged in a horizontal direction in the sheave.

大型スクリューフィーダおよび小型スクリューフィーダを連通する方法としてこれらの間にバイパスを設けることが好ましい。また、大型スクリューフィーダおよび小型スクリューフィーダをそれぞれ直接に攪拌部に連通して併設してもよい。   As a method of communicating the large screw feeder and the small screw feeder, it is preferable to provide a bypass between them. Further, the large screw feeder and the small screw feeder may be provided in direct communication with the stirring unit.

小型スクリューフィーダの断面積は、大型スクリューフィーダの断面積の３分の１以下が好ましい。それぞれの口径は例えば、大型スクリューフィーダの口径が呼び径で６５〜１００Ａ程度が好ましく、小型スクリューフィーダの口径が３２〜５０Ａ程度で好ましい。   The sectional area of the small screw feeder is preferably 1/3 or less of the sectional area of the large screw feeder. For example, the diameter of the large screw feeder is preferably about 65 to 100A, and the diameter of the small screw feeder is preferably about 32 to 50A.

本発明は、粉粒体を製品袋、ペール缶、一斗缶等に充填する際に用いられるが、これに限らず、粉粒体を計量して、開放型の容器に移し替える際に用いてもよい。   The present invention is used when filling a powder bag into a product bag, a pail can, a funnel can, etc., but is not limited to this, and is used when measuring a powder particle and transferring it to an open container. May be.

本発明によれば、大型スクリューフィーダにより粉粒体充填の大出しができる一方、小型スクリューフィーダに切り替えることにより小出しもできるため、粉粒体計量の精度が向上する。また、本発明は、既存の大型スクリューフィーダに小型スクリューフィーダを後付けすることによっても利用可能であるため、要求精度に応じて適宜、計量誤差を少なく変更することができ、コストパフォーマンスに優れる。   According to the present invention, large-sized screw feeders can be used for large-sized powder feeder filling, while small-sized powder feeders can be dispensed by switching to a small-sized screw feeder, so that the accuracy of powder particle measurement is improved. In addition, the present invention can be used by retrofitting a small screw feeder to an existing large screw feeder. Therefore, the measurement error can be appropriately changed according to the required accuracy, and the cost performance is excellent.

本発明実施形態の実施例１の粉粒体小分け計量装置１の正面図である。It is a front view of the granular material subdivision weighing device 1 of Example 1 of the embodiment of the present invention. 同装置１の右側面図である。2 is a right side view of the apparatus 1. FIG. 同装置１の平面図である。2 is a plan view of the apparatus 1. FIG. 同装置１の攪拌部３および充填部４の内部を示す部分断面図（正面）である。FIG. 3 is a partial cross-sectional view (front view) showing the inside of the stirring unit 3 and the filling unit 4 of the apparatus 1. 同装置１の攪拌部３および充填部４の左側面図である。It is a left view of the stirring part 3 and the filling part 4 of the same apparatus 1.

以下、本発明の実施形態である粉粒体小分け計量装置１の構成について図１〜図５を参照して説明する。粉粒体小分け計量装置１は、粉粒体を貯留し給送する貯留部２と、貯留部２から給送される粉粒体を篩い、磁性異物を除去する攪拌部３と、篩いにかけられた粉粒体を切り出して充填する充填部４と、から構成される。   Hereinafter, the structure of the granular material subdivision metering apparatus 1 which is embodiment of this invention is demonstrated with reference to FIGS. The granular material subdivision weighing device 1 is sieved with a storage unit 2 that stores and feeds the granular material, a stirring unit 3 that screens the granular material fed from the storage unit 2 and removes magnetic foreign matter, and a sieve. And a filling unit 4 that cuts out and fills the powder particles.

貯留部２は、図１、２に示すように、内部の気密を保つケーシング２１と、ケーシング２１と一体的に設けられ粉粒体を一時的に貯留するホッパ２２と、空気輸送されてくる粉気混相流を受け入れて粉粒体と空気とに分離して空気を排出するフィルタ２３と、ホッパ２２に貯留される粉粒体を下方に供給するロータリーバルブ２４と粉粒体の投入口２７を備える。   As shown in FIGS. 1 and 2, the storage unit 2 includes a casing 21 that keeps the inside airtight, a hopper 22 that is provided integrally with the casing 21 and temporarily stores powder particles, and powder that is pneumatically transported. A filter 23 that receives the gas-mixed flow and separates the powder and air into air and discharges the air, a rotary valve 24 that supplies the powder stored in the hopper 22 downward, and a powder inlet 27. Prepare.

ケーシング２１は開放して内部を点検・清掃できる点検扉２２１を有する。ホッパ２２は内部を覗ける点検窓２２１と静電容量式のレベル計２２２とホッパ２２内に付着した粉粒体を払い落す噴射ノズル２２３とを有する。その他、貯留部２には、攪拌部３および充填部４で発生する粉塵を集塵するために、これらとケーシング２１内のフィルタ２３の付近とを連通する吸引管２６が設けられる。吸引管２６は自動ダンパー２６１と開閉バルブ２６２を有する。フィルタ２３の詳細な構造は、特許第２６３４０４２号公報を参照されたい。   The casing 21 has an inspection door 221 that can be opened to inspect and clean the inside. The hopper 22 includes an inspection window 221 through which the inside can be seen, a capacitance type level meter 222, and an injection nozzle 223 that wipes off particles adhering to the hopper 22. In addition, the storage unit 2 is provided with a suction pipe 26 that communicates these with the vicinity of the filter 23 in the casing 21 in order to collect dust generated in the stirring unit 3 and the filling unit 4. The suction pipe 26 has an automatic damper 261 and an opening / closing valve 262. For the detailed structure of the filter 23, refer to Japanese Patent No. 2634042.

攪拌部３は、図４に示すように、粉粒体を篩ってダマ取りや異物除去を行うロータリーシフタ３１と、ロータリーシフタ３１の直下に配置されて金属破片等の磁性異物を除去するロータリーマグネット３３とを備える。   As shown in FIG. 4, the stirring unit 3 is a rotary shifter 31 that sifts powder particles to remove lumps and remove foreign matters, and a rotary that is arranged directly under the rotary shifter 31 to remove magnetic foreign matters such as metal fragments. And a magnet 33.

ロータリーシフタ３１は、図４に示すように、長手方向が水平に配置されたものであり、長手方向に横架される攪拌軸３１１と、攪拌軸３１１を回転自在に支持する軸受け３１２と、貯留部２のロータリーバルブ２４から流下する粉粒体を受け入れる受入室３１３と、受入室３１３内において攪拌軸３１１に形成される送出翼３１４と、受入室３１３に連通する篩室３１５と、篩室３１５内で攪拌軸３１１の周囲に設置されたシーブ３１６と、シーブ３１６の内側において攪拌軸３１１から半径方向に延び出す羽根形状のビーター３１７と、攪拌軸３１１を駆動するモータ３１８と、モータ３１８の回転力を伝えるモータプーリ３１９、伝達ベルト３２０、攪拌軸プーリ３２１と、内部を点検・清掃するための点検扉３２２と、を有している。篩室３１５内の上部には吸引管２６（図１参照）が接続される。ロータリーシフタ３１の詳細な構造は、特開昭６３−６９５７７号公報、特開平１１−２４４７８４号公報、また、シーブ３１６の詳細な構造は、国際公開番号ＷＯ０２／３８２９０Ａ１公報、ＷＯ２００４／０６０５８４Ａ１公報、および、ＷＯ２００５／１０２５４３Ａ１号公報に示すので、参照されたい。   As shown in FIG. 4, the rotary shifter 31 is horizontally arranged in the longitudinal direction, and has a stirring shaft 311 horizontally mounted in the longitudinal direction, a bearing 312 that rotatably supports the stirring shaft 311, and a storage. A receiving chamber 313 for receiving powder particles flowing down from the rotary valve 24 of the section 2; a delivery blade 314 formed in the stirring shaft 311 in the receiving chamber 313; a sieve chamber 315 communicating with the receiving chamber 313; and a sieve chamber 315 A sheave 316 installed around the stirring shaft 311, a blade-shaped beater 317 extending radially from the stirring shaft 311 inside the sheave 316, a motor 318 for driving the stirring shaft 311, and rotation of the motor 318 It has a motor pulley 319 for transmitting force, a transmission belt 320, a stirring shaft pulley 321 and an inspection door 322 for inspecting and cleaning the inside.A suction pipe 26 (see FIG. 1) is connected to the upper part in the sieve chamber 315. The detailed structure of the rotary shifter 31 is disclosed in JP-A-63-69577, JP-A-11-244784, and the detailed structure of the sheave 316 is disclosed in International Publication Nos. WO02 / 38290A1, WO2004 / 060584A1, and Reference is made to WO 2005 / 102543A1.

ロータリーマグネット３３は、図４に示すように、篩室３１５の直下に連通した磁性異物除去室３３１でシーブ３１６を通過した粉粒体に混入している金属破片等の磁性異物を除去するものである。ロータリーマグネット３３は、攪拌軸３１１の下側領域に横架される磁石回転軸３３２と、磁石回転軸３３２を支持する軸受け３３３と、磁石回転軸３３２を回転駆動するモータ３３４と、磁石回転軸３３２の周囲に脱着可能に取り付けられ磁石回転軸３３２と一体的に回転する棒状の回転磁石３３５とを有している。   As shown in FIG. 4, the rotary magnet 33 removes magnetic foreign matters such as metal debris mixed in the granular material that has passed through the sheave 316 in the magnetic foreign matter removing chamber 331 communicated directly under the sieve chamber 315. is there. The rotary magnet 33 includes a magnet rotation shaft 332 that is horizontally installed in the lower region of the stirring shaft 311, a bearing 333 that supports the magnet rotation shaft 332, a motor 334 that rotationally drives the magnet rotation shaft 332, and a magnet rotation shaft 332. And a rod-like rotary magnet 335 that is attached to the periphery of the magnet and that rotates integrally with the magnet rotary shaft 332.

充填部４は、図１、４に示すように、磁性異物除去室３２１の直下に連通した粉粒体送出室４０と、粉粒体の大切り出しを行う大型スクリューフィーダ４１と、粉粒体の小切り出しを行う小型スクリューフィーダ４２と、大型スクリューフィーダ４１と小型スクリューフィーダ４２とを連通するバイパス４３と、粉粒体充填室４４とを備えている。   As shown in FIGS. 1 and 4, the filling unit 4 includes a powder delivery chamber 40 that communicates directly under the magnetic foreign matter removal chamber 321, a large screw feeder 41 that performs large cutting of the powder, A small screw feeder 42 that performs small cutting, a bypass 43 that communicates the large screw feeder 41 and the small screw feeder 42, and a granular material filling chamber 44 are provided.

大型スクリューフィーダ４１は、図４に示すように、粉粒体送出室４０において重力により落下してくる粉粒体を横方向に送出して粉粒体充填室４４に大量の定量切り出しを行うものである。大型スクリューフィーダ４１は、粉粒体送出室４０に横架される回転軸４１１と、回転軸４１１を支持する軸受け４１２と、回転軸４１１を回転駆動するモータ４１３と、粉粒体送出室４０内で回転軸４１１に一体的に形成され粉粒体を粉粒体充填室４４に送出するスクリュー羽根４１４と、粉粒体の送出口となる大吐出口４１５と、大吐出口４１５の開閉弁であるシャッター４１６と、シャッター４１６を開閉作動させるアクチュエータ４１７とを有している。   As shown in FIG. 4, the large screw feeder 41 sends a granular material falling due to gravity in the granular material delivery chamber 40 in the lateral direction, and performs a large amount of quantitative cutting into the granular material filling chamber 44. It is. The large screw feeder 41 includes a rotating shaft 411 horizontally mounted on the granular material delivery chamber 40, a bearing 412 that supports the rotational shaft 411, a motor 413 that rotationally drives the rotational shaft 411, and the granular material delivery chamber 40. The screw blade 414 that is integrally formed with the rotary shaft 411 and sends the powder to the powder filling chamber 44, the large discharge port 415 that serves as a powder outlet, and the on-off valve of the large discharge port 415 A shutter 416 and an actuator 417 that opens and closes the shutter 416 are provided.

小型スクリューフィーダ４２は、図４に示すように、バイパス４３を通じて落下してくる粉粒体を横方向に送出して粉粒体充填室４４に少量の定量切り出しを行うものである。小型スクリューフィーダ４２は、回転軸４１１に併設される回転軸４２１と、回転軸４２１を支持する軸受け４２２と、回転軸４２１を回転駆動するモータ４２３と、回転軸４２１に一体的に形成され粉粒体を粉粒体充填室４４に送出するスクリュー羽根４２４と、粉粒体の送出口となる小吐出口４２５とを有している。   As shown in FIG. 4, the small screw feeder 42 sends out the powder particles falling through the bypass 43 in the lateral direction, and performs a small amount of quantitative cutting into the powder material filling chamber 44. The small screw feeder 42 is formed integrally with a rotary shaft 421 provided along with the rotary shaft 411, a bearing 422 that supports the rotary shaft 421, a motor 423 that rotationally drives the rotary shaft 421, and the rotary shaft 421. It has a screw blade 424 for feeding the body to the powder filling chamber 44 and a small discharge port 425 that serves as a powder outlet.

バイパス４３は、図４に示すように、大型スクリューフィーダ４１の下流側から小型スクリューフィーダ４２に連通して設けられる。大型スクリューフィーダ４１の管下部と小型スクリューフィーダ４２の管上部とが連通することが好ましい。   As shown in FIG. 4, the bypass 43 is provided in communication with the small screw feeder 42 from the downstream side of the large screw feeder 41. It is preferable that the lower part of the large screw feeder 41 and the upper part of the small screw feeder 42 communicate with each other.

大型スクリューフィーダ４１の口径は呼び径で８０Ａであり、大型スクリューフィーダ４１の口径は４０Ａである。それぞれの口径は例えば、大型スクリューフィーダの口径が呼び径で６５〜１００Ａ程度が好ましく、小型スクリューフィーダの口径が呼び径で３２〜５０Ａ程度が好ましい。断面積でいえば、小型スクリューフィーダの断面積は大型スクリューフィーダの断面積の３分の１以下となることが好ましい。   The diameter of the large screw feeder 41 is 80A in nominal diameter, and the diameter of the large screw feeder 41 is 40A. For example, the diameter of the large screw feeder is preferably about 65 to 100A, and the diameter of the small screw feeder is preferably about 32 to 50A. In terms of the cross-sectional area, the cross-sectional area of the small screw feeder is preferably less than one third of the cross-sectional area of the large screw feeder.

大吐出口４１５および小吐出口４２５に連通する粉粒体充填室４４は充填カバー４５により覆われ、その上部に吸引管２６が接続され、下部には充填口４６が形成される。   The granular material filling chamber 44 communicating with the large discharge port 415 and the small discharge port 425 is covered with a filling cover 45, the suction pipe 26 is connected to the upper portion, and the filling port 46 is formed at the lower portion.

粉粒体小分け計量装置１は、その他、充填量の設定等のための操作パネルを有する操作盤５１、各駆動部を制御する制御盤５２、粉粒体の充填量を計測する計量部５３を備える。計量部５３はスケール台が例示される。   The granular material subdivision weighing device 1 includes an operation panel 51 having an operation panel for setting the filling amount, a control panel 52 for controlling each driving unit, and a weighing unit 53 for measuring the filling amount of the granular material. Prepare. The weighing unit 53 is exemplified by a scale base.

粉粒体小分け計量装置１の動作を説明する。まず粉粒体の充填前に計量部５３に充填袋５４を開口させて置く。起動スイッチ（図示略）を押すことにより粉粒体小分け計量装置１が起動される。起動した粉粒体小分け計量装置１の制御盤５２には計量開始の信号が送られ、計量部５３に置かれた充填袋５４を含めて風袋引きを行う。引き続き、粉粒体充填の大出しを行うために、モータ３１８、モータ３３４、モータ４１３、およびロータリーバルブ２４の回転が開始され、これにより、攪拌軸３１１、磁石回転軸３３２、回転軸４１１が駆動される。貯留室２０内の粉粒体は、ロータリーバルブ２４により一定量ずつ攪拌部３のロータリーシフタ３１に供給される。その粉粒体は、ロータリーシフタ３１内において受入室３１３に供給され、送出翼３１４により篩室３１５に送り出され、シーブ３１６により篩いにかけられる。シーブ３１６を通過した粉粒体は、充填前処理室３３１においてロータリーマグネット３３により混入した磁性異物が除去され、重力により落下して粉体送出室４０に至る。粉体送出室４０において粉粒体は、大型スクリューフィーダ４１により横方向に移動して大吐出口４１５から粉体充填室４４に入り、充填口４６から落下して、計量部５３に置かれた充填袋５４に充填される。また、上記では粉粒体の大出し工程の際には小型スクリューフィーダ４２を停止しているが、この間に小型スクリューフィーダ４２を作動させ続けてもよい。   Operation | movement of the granular material subdivision metering apparatus 1 is demonstrated. First, the filling bag 54 is opened and placed in the measuring unit 53 before filling the granular material. By pressing a start switch (not shown), the granular material subdivision weighing device 1 is started. A signal for starting measurement is sent to the control panel 52 of the activated granular material subdivision weighing device 1, and the tare is drawn including the filling bag 54 placed in the weighing unit 53. Subsequently, the rotation of the motor 318, the motor 334, the motor 413, and the rotary valve 24 is started in order to perform the large-scale filling of the granular material, thereby driving the stirring shaft 311, the magnet rotating shaft 332, and the rotating shaft 411. Is done. The granular material in the storage chamber 20 is supplied to the rotary shifter 31 of the stirring unit 3 by a predetermined amount by the rotary valve 24. The granular material is supplied to the receiving chamber 313 in the rotary shifter 31, sent to the sieve chamber 315 by the delivery blade 314, and sieved by the sheave 316. The powder particles that have passed through the sheave 316 are removed of the magnetic foreign matter mixed by the rotary magnet 33 in the pre-filling treatment chamber 331 and fall by gravity to reach the powder delivery chamber 40. In the powder delivery chamber 40, the granular material is moved laterally by the large screw feeder 41, enters the powder filling chamber 44 from the large discharge port 415, falls from the filling port 46, and is placed in the measuring unit 53. The filling bag 54 is filled. Further, in the above description, the small screw feeder 42 is stopped during the large particle discharging step, but the small screw feeder 42 may be continuously operated during this time.

大型スクリューフィーダ４１の駆動により粉粒体が充填された充填袋５４の重量が目標値である定量に近づくと、制御盤５２に定量前信号が出され、アクチュエータ４１７が作動し、自動的にシャッター４１６を閉じられて大吐出口４１５が閉鎖され、モータ４１３の回転が止まり、大型スクリューフィーダ４１が停止する。これに伴いモータ４２３が回転を開始し、小型スクリューフィーダ４２が駆動する。小型スクリューフィーダ４２内には、作動していた大型スクリューフィーダ４１からバイパス４３を通じて粉粒体が既に供給されているので、その小型スクリューフィーダ４２内の粉粒体が小吐出口４２５から切り出され、少量ずつ充填袋５４に充填されることとなる。計量部５３が計測する重量が定量に達すると、制御盤５２に計量完了信号が出され、モータ４２３および小型スクリューフィーダ４２が停止され、計量が完了する。なお、計量完了信号は実際の定量よりも小さな値として落差補正を含めておくとよい。   When the weight of the filling bag 54 filled with the granular material by the driving of the large screw feeder 41 approaches the target fixed value, a pre-quantitative signal is output to the control panel 52, the actuator 417 is activated, and the shutter is automatically released. 416 is closed, the large discharge port 415 is closed, the rotation of the motor 413 is stopped, and the large screw feeder 41 is stopped. Along with this, the motor 423 starts rotating, and the small screw feeder 42 is driven. In the small screw feeder 42, since the granular material is already supplied from the operated large screw feeder 41 through the bypass 43, the granular material in the small screw feeder 42 is cut out from the small discharge port 425, The filling bag 54 is filled little by little. When the weight measured by the weighing unit 53 reaches a fixed amount, a measurement completion signal is output to the control panel 52, the motor 423 and the small screw feeder 42 are stopped, and the measurement is completed. The weighing completion signal may include a head correction as a value smaller than the actual quantitative value.

一度、起動スイッチを押し、粉粒体小分け計量装置１を起動させると上記の工程が自動で行われるため、充填済みの充填袋５４を交換して、起動スイッチを押すことを繰り返すことで粉粒体の充填小分け計量を連続的に行うことができる。なお、粉粒体充填の定量値や大出しと小出しを切り替える定量前信号を発する際の重量等は操作盤５１により行う。   Once the start switch is pressed to start the granular material subdivision weighing device 1, the above process is automatically performed. Therefore, the filled bag 54 is replaced, and the start switch is repeatedly pressed to repeat the granule. Body filling and weighing can be performed continuously. It should be noted that the operation panel 51 is used to determine the quantitative value for filling the granular material and the weight when issuing a pre-quantification signal for switching between large and small dispensing.

粉粒体の充填計量を連続的に行うと、貯留室２０内の粉粒体の量が減ることとなるので、粉粒体小分け計量装置１への粉粒体の供給は随時行われる。粉粒体を投入口２７から投入すると、粉粒体は貯留室２０に一時的に貯留され、粉粒体の計量充填とともにロータリーバルブ２４からロータリーシフタ３１に供給されていく。貯留室２０内の粉粒体の貯留量は上下異なる高さに設けられた２つのレベル計２２２により監視されるため、計量充填速度に合わせて粉粒体を投入口２７から投入することにより、貯留量は常に一定の範囲内にあることとなる。   Since the amount of powder particles in the storage chamber 20 is reduced when the powder particles are continuously charged and metered, the powder particles are supplied to the powder particle metering device 1 at any time. When the granular material is introduced from the inlet 27, the granular material is temporarily stored in the storage chamber 20, and supplied to the rotary shifter 31 from the rotary valve 24 together with the metering and filling of the granular material. Since the storage amount of the granular material in the storage chamber 20 is monitored by the two level meters 222 provided at different heights, by introducing the granular material from the input port 27 in accordance with the metering filling speed, The amount of storage is always within a certain range.

上記工程と並行してフィルタ２３がフィルタリングを行う。フィルタ２３は、ケーシング２１内で舞い上がった粉粒体をフィルタ２３内部の濾布（図示略）に吸着し、また、篩室３１５内で舞い上がった粉粒体を含む空気と、充填口４６から舞い落ちようとする粉粒体を含む空気とを同時に吸引管２６を介して貯留室２０に吸引し、濾布（図示略）に吸着する。つまり、フィルタ２３が貯留室２０と、篩室３１５と、粉体充填室４４のフィルタリングを同時に行う。   In parallel with the above process, the filter 23 performs filtering. The filter 23 adsorbs the granular material that has risen in the casing 21 to a filter cloth (not shown) inside the filter 23, and also flows from the air containing the granular material that has risen in the sieve chamber 315 and the filling port 46. The air containing the particulates to be dropped is simultaneously sucked into the storage chamber 20 through the suction pipe 26 and adsorbed on a filter cloth (not shown). That is, the filter 23 simultaneously filters the storage chamber 20, the sieve chamber 315, and the powder filling chamber 44.

以上説明した本発明の実施形態によれば、次の効果がある。すなわち、粉体充填装置１は、小型スクリューフィーダを設けて粉粒体充填の大出しと小出しを使い分けるため、充填の定量の手前までは既存の大型スクリューフィーダ４１により迅速に充填を行う一方、定量前の一定値に達したらフィーダ４２により慎重に充填を行うことで、充填速度と充填精度の両立を高度に実現することができる。充填精度は、従来の大型スクリューフィーダのみにより充填する場合と比較しておよそ±５０ｇから±１０ｇ程度に向上する。また、定量前信号の設定値や小型スクリューフィーダ４２の回転速度の設定値を変更することにより、所望の精度と充填速度のバランスをとることも容易である。また、粉粒体の充填を小出ししているときは大型スクリューフィーダ４１の大吐出口４１５をシャッター４１６で閉鎖するため、大型スクリューフィーダ４１の方から粉粒体が供給されて精度が低下する心配はなくなる。   The embodiment of the present invention described above has the following effects. That is, since the powder filling apparatus 1 is provided with a small screw feeder to selectively use large and small powder filling, the existing large screw feeder 41 is used for quick filling until the filling is fixed. By carefully filling with the feeder 42 when the previous constant value is reached, both the filling speed and the filling accuracy can be realized at a high level. The filling accuracy is improved from about ± 50 g to about ± 10 g as compared with the case of filling only with a conventional large screw feeder. It is also easy to balance desired accuracy and filling speed by changing the setting value of the pre-quantification signal and the setting value of the rotational speed of the small screw feeder 42. In addition, since the large discharge port 415 of the large screw feeder 41 is closed by the shutter 416 when the filling of the granular material is dispensed, the granular material is supplied from the large screw feeder 41 and the accuracy may be lowered. Will disappear.

本発明の実施形態は、既存の粉体充填装置のスクリューフィーダの下に小型スクリューフィーダ４２を後付けすることによっても利用可能である。その際にも小型スクリューフィーダ４２とバイパス４３とシャッター４１６とを付加するのみで足りるため、非常に低コストで利用可能である。従来の充填精度のみで足りる粉体充填装置を製造するに際しても部品のほとんどが共通であるため、製造コストも低く抑えることができる。   The embodiment of the present invention can also be used by retrofitting a small screw feeder 42 under the screw feeder of an existing powder filling apparatus. In this case, since it is sufficient to add the small screw feeder 42, the bypass 43 and the shutter 416, it can be used at a very low cost. Even when producing a powder filling apparatus that only requires conventional filling accuracy, since most of the parts are common, the production cost can be kept low.

軸を水平とするスクリューフィーダ４１，４２を用いるため、粉粒体小分け計量装置１の設置は高さ方向にコンパクトなものとなり、大型スクリューフィーダ４１と小型スクリューフィーダ４２とを上下方向に併設して重力を利用することにより、小型スクリューフィーダ４２に粉粒体を供給することが可能となる。また、大型スクリューフィーダ４１の直下に小型スクリューフィーダ４２を配置し、バイパス４３により連通することとしているため、篩い処理した粉粒体の重力を利用して効率的に送り出すことができる。さらに、充填口４６における大吐出口４１５と小吐出口４２５を効率的に配置でき、排出作業を効率化することができる。   Since the screw feeders 41 and 42 having a horizontal axis are used, the installation of the powder particle dividing and weighing apparatus 1 is compact in the height direction, and the large screw feeder 41 and the small screw feeder 42 are provided in the vertical direction. By using gravity, it becomes possible to supply the granular material to the small screw feeder 42. Moreover, since the small screw feeder 42 is arrange | positioned directly under the large screw feeder 41 and it is supposed that it communicates with the bypass 43, it can send out efficiently using the gravity of the granular material which carried out the sieving process. Furthermore, the large discharge port 415 and the small discharge port 425 in the filling port 46 can be efficiently arranged, and the discharge work can be made efficient.

バイパス４３を大型スクリューフィーダ４１の下流側に設けることにより、小型スクリューフィーダ４２の小型化を図ることができる。   By providing the bypass 43 on the downstream side of the large screw feeder 41, the small screw feeder 42 can be reduced in size.

なお、本発明は、上述の実施形態に限定されるものではなく、本発明の技術的思想を逸脱しない範囲において、改変等を加えることが出来るものであり、それらの改変、均等物等も本発明の技術的範囲に含まれることとなる。充填袋５４に代えて、一斗缶、ペール缶に粉粒体を充填してもよいし、開放容器に粉粒体を排出してもよい。   The present invention is not limited to the above-described embodiment, and modifications and the like can be made without departing from the technical idea of the present invention. It will be included in the technical scope of the invention. Instead of the filling bag 54, the powder can be filled into a canister or a pail can, or the powder can be discharged into an open container.

１…粉粒体小分け計量装置 ２…貯留部
２０…貯留室 ２１…ケーシング
２１１…点検扉 ２２…ホッパ
２２１…点検窓 ２２２…レベル計
２２３…噴射ノズル ２３…フィルタ
２４…ロータリーバルブ ２６…吸引管
２６１…自動ダンパー ２６２…開閉バルブ
２７…投入口
３…攪拌部 ３１…ロータリーシフタ ３１１…攪拌軸
３１２…軸受け ３１３…受入室 ３１４…送出翼
３１５…篩室 ３１６…シーブ ３１７…ビーター
３１８…モータ ３１９…モータプーリ
３２０…伝達ベルト ３２１…攪拌軸プーリ
３２２…点検扉
３２…ロータリーマグネット ３２１…充填前処理室
３２２…磁石回転軸 ３２３…軸受け ３２４…モータ
３２５…棒状の回転磁石
４…充填部 ４０…粉体送出室
４１…大型スクリューフィーダ ４１１…回転軸
４１２…軸受け ４１３…モータ
４１４…スクリュー羽根 ４１５…大吐出口
４１６…シャッター ４１７…アクチュエータ
４２…小型スクリューフィーダ ４２１…回転軸
４２２…軸受け ４２３…モータ
４２４…スクリュー羽根 ４２５…小吐出口
４３…バイパス ４４…粉体充填室
４５…充填カバー ４６…充填口
５１…操作盤 ５２…制御盤
５３…計量部 ５４…充填袋 DESCRIPTION OF SYMBOLS 1 ... Granule body subdivision measuring device 2 ... Storage part
20 ... Reservoir 21 ... Casing
211 ... Inspection door 22 ... Hopper 221 ... Inspection window 222 ... Level meter
223 ... Injection nozzle 23 ... Filter
24 ... Rotary valve 26 ... Suction pipe 261 ... Automatic damper 262 ... Open / close valve
27: Loading port 3 ... Stirring section 31 ... Rotary shifter 311 ... Stirring shaft 312 ... Bearing 313 ... Receiving chamber 314 ... Delivery vane 315 ... Sieve chamber 316 ... Sheave 317 ... Beater 318 ... Motor 319 ... Motor pulley
320 ... Transmission belt 321 ... Agitating shaft pulley
322 ... Inspection door
32 ... Rotary magnet 321 ... Pre-treatment chamber 322 ... Magnet rotating shaft 323 ... Bearing 324 ... Motor 325 ... Bar-shaped rotating magnet
4 ... Filling section 40 ... Powder delivery chamber
41 ... Large screw feeder 411 ... Rotary shaft 412 ... Bearing 413 ... Motor
DESCRIPTION OF SYMBOLS 414 ... Screw blade 415 ... Large discharge port 416 ... Shutter 417 ... Actuator 42 ... Small screw feeder 421 ... Rotating shaft 422 ... Bearing 423 ... Motor
424 ... Screw blade 425 ... Small discharge port 43 ... Bypass 44 ... Powder filling chamber
45 ... Filling cover 46 ... Filling port 51 ... Control panel 52 ... Control panel
53 ... Weighing section 54 ... Filling bag

Claims (3)

粉粒体を移送する大型スクリューフィーダと、
該大型スクリューフィーダと連通する大吐出口と、
前記大型スクリューフィーダの下に連通して併設される小型スクリューフィーダと、
該小型スクリューフィーダと連通する小吐出口と、
前記大吐出口と小吐出口から排出される粉粒体を小分け計量する計量部と、
を備えることを特徴とする粉粒体小分け計量装置。 A large screw feeder that transports powder particles;
A large discharge port communicating with the large screw feeder;
A small screw feeder in communication with the large screw feeder; and
A small discharge port communicating with the small screw feeder;
A metering unit for subdividing and weighing powder particles discharged from the large discharge port and the small discharge port;
A granular material subdivision weighing device comprising: 前記大吐出口を自在に開閉する大吐出口開閉弁を備えたことを特徴とする請求項１に記載の粉粒体小分け計量装置。   The granular material subdivision weighing device according to claim 1, further comprising a large discharge opening / closing valve that freely opens and closes the large discharge opening. 大型スクリューフィーダを回転させることにより、粉粒体を大量に切り出して排出し、これと同時に排出された該粉粒体を計量するステップと、
目標とする前記粉粒体の排出量に近づいたら、前記大型スクリューフィーダの大吐出口からの粉粒体の切り出しを停止するステップと、
前記大型スクリューフィーダの下に連通して併設される小型スクリューフィーダを回転させることにより、前記粉粒体を少量に切り出して排出し、これと同時に排出された該粉粒体を計量するステップと、
目標とする前記粉粒体の排出量に達したら前記小型スクリューフィーダの回転を止め、前記粉粒体の排出を終了するステップと、からなることを特徴とする粉粒体小分け計量方法。 By rotating a large screw feeder to cut out and discharge a large amount of powder particles, and simultaneously measuring the discharged powder particles;
When approaching the target discharge amount of the granular material, stopping the cutting of the granular material from the large discharge port of the large screw feeder,
Rotating a small screw feeder provided in communication under the large screw feeder to cut out and discharge the powder particles in a small amount, and simultaneously measuring the discharged particles
And a step of stopping the rotation of the small screw feeder and ending the discharge of the granular material when reaching the target discharged amount of the granular material.
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