JP4002191B2 - Variable discharge amount type feeder and supply system using this feeder - Google Patents

Variable discharge amount type feeder and supply system using this feeder Download PDF

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Publication number
JP4002191B2
JP4002191B2 JP2003012693A JP2003012693A JP4002191B2 JP 4002191 B2 JP4002191 B2 JP 4002191B2 JP 2003012693 A JP2003012693 A JP 2003012693A JP 2003012693 A JP2003012693 A JP 2003012693A JP 4002191 B2 JP4002191 B2 JP 4002191B2
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feeder
sliding
rotor
discharge
discharge holes
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JP2004224483A (en
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忍 熊谷
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Jfe環境ソリューションズ株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、粉粒体を吐出孔から切り出すフィーダに関する。
【0002】
【従来の技術】
微粉炭をはじめとする粉粒体の燃料、例えば廃プラスチック、木材チップ、RDF、或いは調整剤としての酸化鉄、或いは還元剤等を、貯蔵されたタンクから切り出す方法には各種の方式がある。一般にテーブルフィーダはこのような粉粒体を定量的に切り出す装置として用いられる。
【0003】
テーブルフィーダは回転枡と吐出量を定量化させる摺切板を組み合わせた構造からなる。回転枡の回転数を変化させると、吐出孔から吐き出される粉粒体の吐出量が変化する。テーブルフィーダには、粉粒体が吐き出される吐出孔が一ヵ所設けられることもあるし、複数設けられることもある。
【0004】
【発明が解決しようとする課題】
複数の吐出孔を設けた場合、粉粒体の吐出量は複数の吐出孔全てにおいて同じになる。回転数に比例して複数の吐出孔全ての吐出量を増減させることはできるが、吐出孔毎に吐出量を増減させることはできない。例えば4孔切出テーブルフィーダの場合、回転数を変化させてA,B,C,D吐出孔の吐出量を全て同じように増減させることはできるが、A,B,C,D吐出孔間の吐出量に差を生じさせることができない。近年テーブルフィーダの用途によっては、複数の吐出孔間の吐出量に差を必要とする使い方も要求されている。
【0005】
そこで本発明は、複数の吐出孔間で吐出量の差を生じさせることができるテーブルフィーダを提供することを目的とする。
【0006】
【課題を解決するための手段】
本発明者は、固定されていて動かない摺切板に着目した。そして、摺切板を固定することなくロータに対して昇降できるようにすれば、枡の体積を変化させることができ、複数の吐出孔間で吐出量の差を生じさせることができることを知見した。
【0007】
すなわち本発明は、粉粒体を複数の吐出孔から吐出するフィーダであって、複数の吐出孔が空けられる底板と、粉粒体が収容される枡部を有し、前記枡部が前記底板の吐出孔上を通過するように回転するロータと、前記ロータの上方に前記複数の吐出孔の各々に対応して複数配置され、前記枡部内に収容される粉粒体を均す摺切板と、前記複数の摺切板の各々を昇降させて、前記ロータと前記摺切板との間の間隔を調整する複数の摺切板昇降機構と、を備えることを特徴とする。
【0008】
前記摺切板は、空気管の先端に接続されると共にその吹出口から前記枡部に収容された粉粒体に向かってエアーを吹き出すのが望ましい。
【0009】
前記摺切板昇降機構は、前記空気管を軸線方向に移動することによって前記摺切板を昇降させてもよい。
【0010】
また本発明は、粉粒体を複数の吐出孔から吐出するフィーダと、前記複数の吐出孔それぞれと供給対象とを独立した系統で接続し、粉粒体を搬送するための複数の供給ラインと、を備える供給システムであって、前記フィーダは、複数の吐出孔が空けられる底板と、粉粒体が収容される枡部を有し、前記枡部が前記底板の吐出孔上を通過するように回転するロータと、前記ロータの上方に前記複数の吐出孔の各々に対応して複数配置され、前記枡部内に収容される粉粒体を均す摺切板と、前記複数の摺切板の各々を昇降させて、前記ロータと前記複数の摺切板との間の間隔を調整する複数の摺切板昇降機構と、を備えることを特徴とする。
【0011】
【発明の実施の形態】
図1は本発明の一実施形態におけるフィーダを示す。フィーダ1は、粉粒体が貯蔵されるタンク2の下部に配置され、複数の吐出孔3からタンク2内に貯蔵された粉粒体を切り出す。この図1においては、吐出孔3が一箇所のみ示されているが、実際には2箇所以上設けられている。切り出される粉粒体は、微粉炭をはじめとする粉粒体の燃料、例えば廃プラスチック、木材チップ、RDF、或いは調整剤としての酸化鉄、或いは還元剤等であり、特に限定されるものではない。
【0012】
フィーダ1は、複数の吐出孔3が空けられた例えば円盤状の底板4と、回転するロータ5を組み合わせて概略構成される。底板4には周方向に均等間隔を空けて複数の吐出孔3が形成されている。底板4の上面にはフィーダ1内に粉粒体を貯蔵するための周壁部6が載せられる。この周壁部6の上面にタンク2が載せられている。また底板4の下面には、後述する炉等の供給対象に粉粒体を空気搬送するための供給ライン7が遮断弁を介して接続される。
【0013】
ロータ5は、粉粒体が収容される枡部8を有し、該枡部8が吐出孔3上を通過するように回転する。図2はロータ5の一例を示す。ロータ5は、軸5aとこの軸5aに取付けられた放射状の仕切り板5b…とからなり、底板4の上方で回転する。仕切り板5b…により、粉粒体が収容される枡部8として機能する空隙が放射状に形成されている。この仕切り板5b、周壁部6、底板4、後述する摺切板9で囲まれた略立方体状の空間が、粉粒体を定量的に収容する枡として機能する。
【0014】
図1に示すように、ロータ5は底板4に回転可能に支持された回転軸12に取付けられる。回転軸12の上端には、フィーダ1内の粉粒体を撹拌する撹拌翼11が設けられている。回転軸12の下端には、回転軸12を回転駆動させるためのプーリ、スプロケット等の駆動部13が取付けられる。回転軸12は例えば駆動モータ15によってローラチェーン16等を介して回転駆動される。また回転軸12はモータ直結により回転駆動されてもよい。
【0015】
ロータ5の上方には、複数の吐出孔3それぞれに対応して複数の摺切板9が配置される。摺切板9は、上下方向に伸びる空気管18の下端にチャンバ20を介して取付けられている。図3は摺切板9の近傍の詳細図を示す。摺切板9には複数の吹出口10が形成される。この複数の吹出口10から空気管18内を流れるエアーが粉粒体に向かって吹き出される。これにより枡部8に収容された粉粒体が吐出孔3から吐き出される。
【0016】
空気管18の上部には、摺切板9を昇降させる摺切板昇降機構22が設けられる(図1参照)。図4は摺切板昇降機構22の詳細図を示す。摺切板昇降機構22は複数の摺切板9に対応して複数設けられ、各摺切板9を個別に昇降できるようになっている。摺切板昇降機構22は主に、空気管18の外周に部分的に形成されたねじ18aと、このねじ18aに螺合するナット23と、ナット23を回転可能に支持するブラケット24で構成される。ブラケット24はタンク2に固定される。ナット23を回転させると、空気管18が軸線方向に移動し、空気管18の先端に取付けられた摺切板9が昇降する。摺切板9の昇降量は摺切板位置指示計25により検知される。
【0017】
なおこの実施形態では、空気管を軸線方向に移動させて摺切板の高さを調整しているが、例えば丸棒で軸線方向に移動させてもよい(この場合は摺切板下面から吹き出す空気供給を別ルートで設ける構造になる)。またこの実施形態ではナット23は手動により回転されているが、後述するように自動により回転されてもよい。また粉粒体をその自重により吐出孔3から吐き出させることができる場合には、摺切板9に空気を吹き出す吹出口10を設けないこともある。
【0018】
図5はフィーダから粉粒体を切り出す際の動作説明図であり、摺切板9の付近を拡大して示したものである。ロータ5の回転により、枡部8内の粉粒体Pが吐出孔3の上方に移動する。粉粒体Pが吐出孔3に近くなると、摺切板9によって余分な粉粒体Pが摺り切られる。粉粒体Pが摺り切られた後、枡部8は摺切板9の下方を通過して吐出孔3へと移動する。枡部8が吐出孔3の上にくると、吹出口10から噴射されるエアーにより吐出孔3から一気に粉粒体Pが排出される。空になった枡部8は摺切板9の下方を通過した後、新たな粉粒体Pが投入されて次の切出し動作を繰り返す。
【0019】
摺切板9を摺切板昇降機構22により昇降させると、ロータ5と摺切板9との間の隙間Wが調整される。摺切板9の高さを上げると、隙間Wが大きくなり、その分粉粒体Pがロータ5と摺切板9との間に入ってくるので、吐出孔3からの吐出量が大きくなる。一方摺切板9の高さを下げると、隙間Wが小さくなり、その分粉粒体Pがロータ5と摺切板9との間に入り難くなるので、吐出孔3からの吐出量が小さくなる。このように本実施形態によれば、複数の吐出孔3間で吐出量を任意に調整することができ、吐出孔3間の吐出量の差を生じさせることができる。
【0020】
図6は、自動的に摺切板を昇降させる摺切板昇降機構31の例を示す。空気管18に形成されたねじ18a、及びこのねじ18aに螺合するナット23の構成は上記例と同様なので同一の符号を付してその説明を省略する。この例では、ナット23はウォーム歯車32a,32b及び図示しないモータによって回転駆動される。
【0021】
図7は上記フィーダ1を組み込んだ供給システムを示す。この供給システムは廃プラスチック等の粉粒体燃料を石灰焼成炉等の炉33(図中平面図で示す)に供給する。この実施形態では、フィーダ1には例えばA孔及びB孔の2箇所の吐出孔が設けられる。フィーダ1自体の構成は上記実施形態と略同様な構成なのでその詳細な説明は省略する。フィーダ1のA孔及びB孔と炉とは、それぞれ独立した系統の供給ライン34,35で互いに接続される。この供給ライン34,35では例えば空気輸送によって粉粒体を搬送する。
【0022】
炉33には粉粒体を吹き出すAバーナ及びBバーナからなる2つのバーナが設けられる。また炉内には温度センサT1及びT2が設けられる。実際の炉33では、空気の流れとか放熱による影響とかの炉33の特性により、炉内のAバーナ近傍での温度と、Bバーナ近傍での温度とで温度差が生じる場合がある。炉33内で温度差を生じさせないように燃料発熱量(管理温度)を正確に制御したい場合、AバーナとBバーナとで粉粒体の供給量の差を生じさせることが必要になる。
【0023】
例えば燃料として重油を供給するときには、バルブの開度を調整することで簡単に供給量を微調整することができる。しかし近年、重油の代わりに廉価な廃プラスチック等の粉粒体を燃料として用いることが注目されている。従来のフィーダでは複数の吐出孔毎に粉粒体の吐出量を調整することができないため、一基のフィーダではこの調整ができず、複数のフィーダ(この例の場合には2基)が必要になる。この実施形態のように、例えば温度センサT1及びT2の検出値に基づいて摺切板9を昇降し(具体的には温度の低い方の摺切板9を上げ、温度の高い方の摺切板9を下げ)、A孔及びB孔間で吐出量を調整すれば、一連のフィーダでAバーナ及びBバーナ毎に供給量を最適に微調整することができる。したがって炉33内で温度差が生じないように、炉33内の燃料発熱量(管理温度)を正確に制御することができる。
【0024】
【実施例】
摺切板を昇降可能にした2孔切出(A孔及びB孔)フィーダを用い、ロータ上面と摺切板下面との距離を最小値−基準値−最大値となるように変化させ、A孔及びB孔の吐出量を測定した。表1にその結果を示す。また図8に回転数と吐出量との関係を示す。
【0025】
【表1】

Figure 0004002191
【0026】
これによると、A孔、B孔の吐出量は、±20%前後範囲で調整可能であり、その差は40%になる。各孔間の吐出量の差を20%以上にすることも可能であるが、吐出量の精度にバラツキが生じるおそれがあるので、20%前後とするのが望ましい。
【0027】
【発明の効果】
以上説明したように本発明によれば、フィーダの複数の吐出孔間で吐出量の差を生じさせることができるので、例えば炉への供給に用いた場合、複数のバーナ毎に供給量を最適に微調整することができ、したがって炉内の燃料発熱量(管理温度)を正確に制御することができる。
【図面の簡単な説明】
【図1】本発明の一実施形態におけるフィーダを示す断面図。
【図2】上記フィーダに組み込まれるロータの一例を示す平面図。
【図3】上記フィーダに組み込まれる摺切板近傍の詳細な断面図。
【図4】摺切板昇降機構の詳細な断面図。
【図5】フィーダから粉粒体を切り出す際の動作説明図。
【図6】摺切板昇降機構の他の例を示す断面図。
【図7】上記フィーダを組み込んだ供給システムを示す概念図。
【図8】回転数と吐出量との関係を示すグラフ。
【符号の説明】
1…フィーダ
3…吐出孔
4…底板
5…ロータ
7…供給ライン
8…枡部
9…摺切板
10…吹出口
18…空気管
22,31…摺切板昇降機構
P…粉粒体
W…隙間[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a feeder that cuts out a granular material from a discharge hole.
[0002]
[Prior art]
There are various types of methods for cutting fuel from fine particles, such as pulverized coal, such as waste plastic, wood chips, RDF, iron oxide as a regulator, or reducing agent, from a stored tank. Generally, a table feeder is used as an apparatus for quantitatively cutting out such a granular material.
[0003]
The table feeder has a structure in which a rotary rod and a sliding plate for quantifying the discharge amount are combined. When the number of rotations of the rotary rod is changed, the discharge amount of the granular material discharged from the discharge hole changes. The table feeder may be provided with a single discharge hole for discharging the powder or a plurality of discharge holes.
[0004]
[Problems to be solved by the invention]
When a plurality of discharge holes are provided, the discharge amount of the granular material is the same in all of the plurality of discharge holes. Although the discharge amount of all of the plurality of discharge holes can be increased or decreased in proportion to the rotation speed, the discharge amount cannot be increased or decreased for each discharge hole. For example, in the case of a 4-hole cutting table feeder, it is possible to increase or decrease the discharge amount of the A, B, C, D discharge holes in the same way by changing the rotation speed, but between the A, B, C, D discharge holes It is not possible to make a difference in the discharge amount. In recent years, depending on the application of the table feeder, there has been a demand for usage that requires a difference in the discharge amount between the plurality of discharge holes.
[0005]
Therefore, an object of the present invention is to provide a table feeder capable of causing a difference in discharge amount between a plurality of discharge holes.
[0006]
[Means for Solving the Problems]
The inventor of the present invention paid attention to a sliding plate that is fixed and does not move. And if it was made to be able to go up and down with respect to a rotor, without fixing a slide board, it discovered that the volume of a ridge could be changed and the difference in the amount of discharge could be made among a plurality of discharge holes. .
[0007]
That is, the present invention is a feeder that discharges a granular material from a plurality of discharge holes, and includes a bottom plate in which a plurality of discharge holes are formed, and a flange portion that accommodates the granular material, and the flange portion is the bottom plate. A rotor that rotates so as to pass over the discharge holes, and a sliding plate that is disposed above the rotor in correspondence with each of the plurality of discharge holes and that equalizes the powder particles accommodated in the collar portion When the plurality of raising and lowering the respective sliding Setsuban, characterized in that it comprises a plurality of sliding switching plate lift mechanism for adjusting the spacing between the rotor and the sliding Setsuban.
[0008]
It is desirable that the sliding plate is connected to the tip of an air tube and blows out air from its outlet toward the granular material accommodated in the flange.
[0009]
The sliding plate lifting mechanism may raise and lower the sliding plate by moving the air tube in the axial direction.
[0010]
The present invention also includes a feeder that discharges the granular material from a plurality of discharge holes, a plurality of supply lines that connect each of the plurality of discharge holes and a supply target in an independent system, and convey the granular material; The feeder has a bottom plate in which a plurality of discharge holes are formed, and a flange portion in which powder particles are accommodated, so that the flange portion passes over the discharge holes of the bottom plate. A rotating rotor, a plurality of cutting plates arranged above the rotor corresponding to each of the plurality of discharge holes , and for leveling the powder particles accommodated in the flange, and the plurality of cutting plates And a plurality of slide plate lifting mechanisms for adjusting the distances between the rotor and the plurality of slide plates.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a feeder in an embodiment of the present invention. The feeder 1 is disposed at the lower part of the tank 2 in which the powder particles are stored, and cuts out the powder particles stored in the tank 2 from the plurality of discharge holes 3. In FIG. 1, only one discharge hole 3 is shown, but actually two or more are provided. The granular material to be cut out is a particulate fuel including pulverized coal, such as waste plastic, wood chips, RDF, iron oxide as a regulator, or a reducing agent, and is not particularly limited. .
[0012]
The feeder 1 is schematically configured by combining, for example, a disc-shaped bottom plate 4 having a plurality of discharge holes 3 and a rotating rotor 5. A plurality of discharge holes 3 are formed in the bottom plate 4 at equal intervals in the circumferential direction. On the upper surface of the bottom plate 4, a peripheral wall portion 6 for storing powder particles is placed in the feeder 1. A tank 2 is placed on the upper surface of the peripheral wall 6. Further, a supply line 7 for air-feeding the granular material to a supply target such as a furnace described later is connected to the lower surface of the bottom plate 4 via a shut-off valve.
[0013]
The rotor 5 has a flange 8 in which the powder particles are accommodated, and rotates so that the flange 8 passes over the discharge hole 3. FIG. 2 shows an example of the rotor 5. The rotor 5 includes a shaft 5a and radial partition plates 5b attached to the shaft 5a, and rotates above the bottom plate 4. By the partition plates 5b ..., voids that function as the flanges 8 in which the powder particles are accommodated are formed radially. The substantially cubic space surrounded by the partition plate 5b, the peripheral wall portion 6, the bottom plate 4, and the sliding plate 9 described later functions as a bowl for quantitatively containing the powder particles.
[0014]
As shown in FIG. 1, the rotor 5 is attached to a rotating shaft 12 that is rotatably supported by the bottom plate 4. At the upper end of the rotating shaft 12, a stirring blade 11 that stirs the granular material in the feeder 1 is provided. A driving unit 13 such as a pulley and a sprocket for rotating the rotating shaft 12 is attached to the lower end of the rotating shaft 12. The rotary shaft 12 is rotationally driven by a drive motor 15 via a roller chain 16 or the like, for example. The rotating shaft 12 may be driven to rotate by direct motor connection.
[0015]
Above the rotor 5, a plurality of sliding plates 9 are arranged corresponding to the plurality of discharge holes 3, respectively. The slide plate 9 is attached to the lower end of an air pipe 18 extending in the vertical direction via a chamber 20. FIG. 3 shows a detailed view of the vicinity of the sliding plate 9. A plurality of outlets 10 are formed in the sliding plate 9. Air flowing through the air pipe 18 from the plurality of outlets 10 is blown out toward the granular material. Thereby, the granular material accommodated in the collar part 8 is discharged from the discharge hole 3.
[0016]
At the upper part of the air pipe 18, a sliding plate lifting mechanism 22 that lifts and lowers the sliding plate 9 is provided (see FIG. 1). FIG. 4 shows a detailed view of the sliding plate lifting mechanism 22. A plurality of slide plate lifting mechanisms 22 are provided corresponding to the plurality of slide plates 9 so that each slide plate 9 can be raised and lowered individually. The sliding plate lifting mechanism 22 is mainly composed of a screw 18a partially formed on the outer periphery of the air pipe 18, a nut 23 screwed to the screw 18a, and a bracket 24 that rotatably supports the nut 23. The The bracket 24 is fixed to the tank 2. When the nut 23 is rotated, the air tube 18 moves in the axial direction, and the slide plate 9 attached to the tip of the air tube 18 moves up and down. The raising / lowering amount of the sliding plate 9 is detected by the sliding plate position indicator 25.
[0017]
In this embodiment, the height of the slide plate is adjusted by moving the air tube in the axial direction, but it may be moved in the axial direction by, for example, a round bar (in this case, it blows out from the lower surface of the slide plate) Air supply will be provided by another route). In this embodiment, the nut 23 is manually rotated, but may be automatically rotated as described later. In addition, when the granular material can be discharged from the discharge hole 3 by its own weight, the blowout port 10 that blows out air to the sliding plate 9 may not be provided.
[0018]
FIG. 5 is an explanatory view of the operation when cutting the granular material from the feeder, and shows the vicinity of the sliding plate 9 in an enlarged manner. Due to the rotation of the rotor 5, the granular material P in the flange 8 moves above the discharge hole 3. When the powder body P comes close to the discharge hole 3, the excess powder body P is scraped off by the slide plate 9. After the powder P is cut off, the flange 8 moves below the slide plate 9 and moves to the discharge hole 3. When the eaves part 8 comes on the discharge hole 3, the granular material P is discharged from the discharge hole 3 at once by the air injected from the blower outlet 10. After the empty ridge part 8 passes below the sliding plate 9, a new powder P is introduced and the next cutting operation is repeated.
[0019]
When the slide plate 9 is moved up and down by the slide plate lifting mechanism 22, the gap W between the rotor 5 and the slide plate 9 is adjusted. When the height of the scraping plate 9 is increased, the gap W is increased, and accordingly, the granular material P enters between the rotor 5 and the scraping plate 9, so that the discharge amount from the discharge hole 3 is increased. . On the other hand, when the height of the scraping plate 9 is lowered, the gap W is reduced, and accordingly, the granular material P becomes difficult to enter between the rotor 5 and the scraping plate 9, so that the discharge amount from the discharge hole 3 is small. Become. As described above, according to this embodiment, the discharge amount can be arbitrarily adjusted between the plurality of discharge holes 3, and a difference in discharge amount between the discharge holes 3 can be generated.
[0020]
FIG. 6 shows an example of a sliding plate lifting mechanism 31 that automatically lifts and lowers the sliding plate. Since the structure of the screw 18a formed in the air pipe 18 and the nut 23 screwed into the screw 18a is the same as the above example, the same reference numerals are given and the description thereof is omitted. In this example, the nut 23 is rotationally driven by worm gears 32a and 32b and a motor (not shown).
[0021]
FIG. 7 shows a supply system incorporating the feeder 1. This supply system supplies granular fuel such as waste plastic to a furnace 33 (shown in a plan view in the figure) such as a lime firing furnace. In this embodiment, the feeder 1 is provided with two discharge holes, for example, an A hole and a B hole. Since the configuration of the feeder 1 itself is substantially the same as that of the above embodiment, a detailed description thereof is omitted. The A hole and B hole of the feeder 1 and the furnace are connected to each other by supply lines 34 and 35 of independent systems. In the supply lines 34 and 35, for example, the granular material is conveyed by pneumatic transportation.
[0022]
The furnace 33 is provided with two burners consisting of an A burner and a B burner for blowing out powder particles. Temperature sensors T1 and T2 are provided in the furnace. In the actual furnace 33, there may be a temperature difference between the temperature in the vicinity of the A burner and the temperature in the vicinity of the B burner in the furnace due to the characteristics of the furnace 33 such as the air flow or the influence of heat radiation. When it is desired to accurately control the amount of heat generated by the fuel (management temperature) so as not to cause a temperature difference in the furnace 33, it is necessary to cause a difference in the supply amount of the granular material between the A burner and the B burner.
[0023]
For example, when supplying heavy oil as fuel, the supply amount can be easily finely adjusted by adjusting the opening of the valve. However, in recent years, attention has been paid to using inexpensive granular materials such as waste plastic as fuel instead of heavy oil. Since the conventional feeder cannot adjust the discharge amount of the granular material for each of a plurality of discharge holes, this adjustment cannot be performed with one feeder, and a plurality of feeders (two in this example) are required. become. As in this embodiment, for example, the sliding plate 9 is moved up and down based on the detection values of the temperature sensors T1 and T2 (specifically, the lower cutting plate 9 is raised and the higher temperature is cut off). If the discharge amount is adjusted between the A hole and the B hole by lowering the plate 9), the supply amount can be optimally finely adjusted for each A burner and B burner with a series of feeders. Accordingly, the fuel heat generation amount (management temperature) in the furnace 33 can be accurately controlled so as not to cause a temperature difference in the furnace 33.
[0024]
【Example】
Using a 2-hole cutting (A hole and B hole) feeder that allows the slide plate to be raised and lowered, the distance between the upper surface of the rotor and the lower surface of the slide plate is changed to be the minimum value−the reference value−the maximum value. The discharge amount of the hole and the B hole was measured. Table 1 shows the results. FIG. 8 shows the relationship between the rotation speed and the discharge amount.
[0025]
[Table 1]
Figure 0004002191
[0026]
According to this, the discharge amount of the A hole and the B hole can be adjusted within a range of about ± 20%, and the difference is 40%. Although it is possible to set the difference in the discharge amount between the holes to 20% or more, there is a possibility that the accuracy of the discharge amount may vary.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to cause a difference in discharge amount between a plurality of discharge holes of the feeder. Therefore, when used for supplying to a furnace, for example, the supply amount is optimal for each of a plurality of burners. Therefore, the amount of heat generated by the fuel in the furnace (management temperature) can be accurately controlled.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a feeder in an embodiment of the present invention.
FIG. 2 is a plan view showing an example of a rotor incorporated in the feeder.
FIG. 3 is a detailed cross-sectional view of the vicinity of a sliding plate incorporated in the feeder.
FIG. 4 is a detailed sectional view of a sliding plate lifting mechanism.
FIG. 5 is an operation explanatory diagram when cutting out a granular material from a feeder.
FIG. 6 is a cross-sectional view showing another example of a sliding plate lifting mechanism.
FIG. 7 is a conceptual diagram showing a supply system incorporating the feeder.
FIG. 8 is a graph showing the relationship between the rotation speed and the discharge amount.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Feeder 3 ... Discharge hole 4 ... Bottom plate 5 ... Rotor 7 ... Supply line 8 ... Saddle 9 ... Slide-off plate 10 ... Outlet 18 ... Air pipe 22, 31 ... Slide-off plate raising / lowering mechanism P ... Granule W ... Gap

Claims (4)

粉粒体を複数の吐出孔から吐出するフィーダであって、
複数の吐出孔が空けられる底板と、
粉粒体が収容される枡部を有し、前記枡部が前記底板の吐出孔上を通過するように回転するロータと、
前記ロータの上方に前記複数の吐出孔の各々に対応して複数配置され、前記枡部内に収容される粉粒体を均す摺切板と、
前記複数の摺切板の各々を昇降させて、前記ロータと前記摺切板との間の間隔を調整する複数の摺切板昇降機構と、を備えることを特徴とする吐出量可変式フィーダ。
A feeder that discharges powder particles from a plurality of discharge holes,
A bottom plate with a plurality of discharge holes,
A rotor that has a flange that accommodates powder particles, and the rotor rotates so that the flange passes over the discharge hole of the bottom plate;
A plurality of sliding plates arranged above the rotor corresponding to each of the plurality of discharge holes , and leveling the granular material accommodated in the flange,
Wherein the plurality of by lifting the respective sliding Setsuban, variable discharge feeder, characterized in that it comprises a plurality of sliding switching plate lift mechanism for adjusting the spacing between the rotor and the sliding Setsuban.
前記摺切板は、空気管の先端に接続されると共にその吹出口から前記枡部に収容された粉粒体に向かってエアーを吹き出すことを特徴とする請求項1に記載の吐出量可変式フィーダ。  The discharge amount variable type according to claim 1, wherein the sliding plate is connected to a tip of an air pipe and blows air from a blow-out port toward a granular material accommodated in the flange portion. feeder. 前記摺切板昇降機構は、前記空気管を軸線方向に移動させることによって前記摺切板を昇降することを特徴とする請求項2に記載の吐出量可変式フィーダ。  3. The variable discharge amount feeder according to claim 2, wherein the sliding plate lifting mechanism lifts and lowers the sliding plate by moving the air pipe in the axial direction. 4. 粉粒体を複数の吐出孔から吐出するフィーダと、
前記複数の吐出孔それぞれと供給対象とを独立した系統で接続し、粉粒体を搬送するための複数の供給ラインと、を備える供給システムであって、
前記フィーダは、
複数の吐出孔が空けられる底板と、
粉粒体が収容される枡部を有し、前記枡部が前記底板の吐出孔上を通過するように回転するロータと、
前記ロータの上方に前記複数の吐出孔の各々に対応して複数配置され、前記枡部内に収容される粉粒体を均す摺切板と、
前記複数の摺切板の各々を昇降させて、前記ロータと前記複数の摺切板との間の間隔を調整する複数の摺切板昇降機構と、を備えることを特徴とする供給システム。
A feeder for discharging the granular material from a plurality of discharge holes;
Each of the plurality of discharge holes and a supply target are connected by an independent system, and a plurality of supply lines for conveying powder particles, and a supply system comprising:
The feeder is
A bottom plate with a plurality of discharge holes,
A rotor that has a flange that accommodates powder particles, and the rotor rotates so that the flange passes over the discharge hole of the bottom plate;
A plurality of sliding plates arranged above the rotor corresponding to each of the plurality of discharge holes , and leveling the granular material accommodated in the flange,
Supply system characterized in that it comprises a plurality of sliding switching plate lift mechanism for adjusting the spacing between the plurality of by lifting the respective sliding Setsuban, the rotor and the plurality of sliding off plate.
JP2003012693A 2003-01-21 2003-01-21 Variable discharge amount type feeder and supply system using this feeder Expired - Lifetime JP4002191B2 (en)

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