JPH07100545B2 - Powder feeder - Google Patents
Powder feederInfo
- Publication number
- JPH07100545B2 JPH07100545B2 JP3167431A JP16743191A JPH07100545B2 JP H07100545 B2 JPH07100545 B2 JP H07100545B2 JP 3167431 A JP3167431 A JP 3167431A JP 16743191 A JP16743191 A JP 16743191A JP H07100545 B2 JPH07100545 B2 JP H07100545B2
- Authority
- JP
- Japan
- Prior art keywords
- powder
- blowing
- stirring blade
- hopper
- container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Air Transport Of Granular Materials (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Blast Furnaces (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高炉への微粉炭あるい
は微粉鉱石の吹き込みをはじめとして、セメント等の分
野における粉体（粉粒またはこれらの混合体を示す）搬
送に適用可能な粉体供給装置に関するものである。INDUSTRIAL FIELD OF APPLICATION The present invention is applicable to powder (indicating powder particles or a mixture thereof) in the field of cement and the like, including the injection of pulverized coal or fine ore into a blast furnace. The present invention relates to a supply device.
【０００２】[0002]
【従来の技術】一般的に言って、粉体供給装置は粉体を
貯留するホッパーの下部に配置されており、粉体の自重
が粉体供給装置にかかっている。ホッパーに投入された
直後の粉体は空気などの気体が混在しているため、当初
流動性の良い状態であっても、投入後の貯留時間が長く
なると粉体層から気体が抜け出し、圧密化してくる。ま
た、一般にホッパーの下部は逆円錐状になっているた
め、排出により粉体層が下方に移動するにしたがって圧
密化は増長され、粉体供給装置への粉体の円滑的導入が
難しくなる。2. Description of the Related Art Generally speaking, a powder supply device is arranged below a hopper which stores powder, and the weight of the powder is applied to the powder supply device. Since gas such as air is mixed in the powder immediately after being put into the hopper, even if the fluidity is initially good, the gas will escape from the powder layer when the storage time becomes long after feeding, and the powder will be consolidated. Come on. Further, since the lower part of the hopper is generally in the shape of an inverted cone, the compaction is increased as the powder layer moves downward due to discharge, and it becomes difficult to smoothly introduce the powder into the powder supply device.
【０００３】そのため、従来は圧密化の緩和あるいは防
止を目的としてホッパー内に気体を吹き込むことで粉体
を流動化させているが、粉体供給装置の収容容器内部に
は気体で粉体の流動化を促進する機能は装備されておら
ず、攪拌翼を動かすことで強制的に流動化状態に近づけ
ている。Therefore, conventionally, the powder is fluidized by blowing a gas into the hopper for the purpose of alleviating or preventing the consolidation, but the powder is fluidized by the gas inside the container of the powder supply device. The function of promoting fluidization is not equipped, but the fluidization state is forced to approach by moving the stirring blade.
【０００４】この方法では攪拌翼にかかる抵抗は大き
く、攪拌翼駆動用電動機の容量が大きくなると同時に、
攪拌翼自体及び軸等の機械部品も大きなものが必要とな
る。特に、粉体が圧密化された状態で停止状態から粉体
供給装置を起動するときは、多大な抵抗がかかり起動で
きず、また機器の破損につながることがある。粉体の圧
密状態により起動時の初期切出量の変動も大きい。従っ
て、粉体を安定的に連続供給することは困難となる。こ
のため、起動時だけのための電動機容量の増大及び攪拌
翼等の機械強度が必要となり、設備のコストアップにな
っている（特開昭６３−１６９３１５号公報）。In this method, the resistance applied to the stirring blade is large, and the capacity of the stirring blade driving electric motor is increased, and at the same time,
Large mechanical parts such as the stirring blade itself and the shaft are also required. In particular, when the powder supply device is started from the stopped state in a state where the powder is compacted, a large amount of resistance is applied, the powder cannot be started, and the device may be damaged. The initial cutting amount at start-up varies greatly depending on the powder compaction state. Therefore, it becomes difficult to stably and continuously supply the powder. For this reason, it is necessary to increase the capacity of the electric motor and to increase the mechanical strength of the stirring blades only at the time of start-up, resulting in an increase in the cost of equipment (Japanese Patent Laid-Open No. 63-169315).
【０００５】[0005]
【発明が解決しようとする課題】並列に複数個配列され
た粉体吹込ホッパーを交互に切り替え、粉体を連続して
排出し、これを連続搬送するには、従来の粉体供給装置
では、待機している粉体吹込ホッパーは貯留時間が長く
なることから、該吹込ホッパー内の粉体の圧密化が増長
され、排出時に攪拌翼の起動に多大の動力が必要とな
り、切替時の初期切出量の変動が大きいため該吹込ホッ
パー間のスムーズな切替えができないから安定な連続供
給もできない。In order to alternately switch the powder blowing hoppers arranged in parallel and continuously discharge the powder and continuously convey the powder, in the conventional powder feeding device, Since the waiting time of the powder blowing hopper is long, the compaction of the powder in the blowing hopper is increased, and a large amount of power is required to start the stirring blade at the time of discharge, and the initial switching Since the change in the output amount is large, it is not possible to smoothly switch between the blow hoppers, and thus stable continuous supply cannot be performed.
【０００６】本発明は、特に粉体吹込ホッパーからの粉
体の切り出しに要する動力の低減と該吹込ホッパー間の
スムーズな切替えが可能で、粉体の安定な連続供給がで
きる粉体供給装置を提供するものである。The present invention provides a powder supply device which can reduce the power required for cutting out powder from the powder injection hopper and can smoothly switch between the injection hoppers to stably and continuously supply the powder. It is provided.
【０００７】[0007]
【課題を解決するための手段】本発明は、粉体貯槽の下
方に配置された粉体吹込ホッパーの下部にあって、攪拌
翼を備えた粉体収容容器において、該粉体収容容器内の
前記攪拌翼の上方に、該粉体収容容器内の粉体を流動化
させるガスを常時吹き込む複数の吹出口を有する流動化
ガス吹込管を備え、該粉体収容容器内で前記攪拌翼の下
方に設けた粉体排出口部に、切出粉体の搬送を補助する
ガスを吹き込む搬送補助ガス吹込管を備えたことを特徴
とする粉体供給装置である。Means for Solving the Problems The present invention, in the lower portion of the powder blow hopper which is placed below the powder storage tank, in the powder container equipped with a stirring blade, the powder storage container of
Above the stirring blade, fluidizing with a plurality of air outlets blowing constantly Ruga scan is <br/> fluidize the powder the powder storage container
Equipped with a gas blowing pipe, below the stirring blade in the powder container
The powder outlet portion provided towards, assist the transport of the cutting powder
A powder supplying device which is characterized in that a transport auxiliary gas blowing tube for blowing a gas.
【０００８】[0008]
【作用】本発明は、粉体吹込ホッパー下部の粉体収容容
器内の粉体を、ガスの吹込と攪拌翼の回転によって常に
流動状態に維持するとともに、該吹込ホッパーからの切
出しに際しては、該吹込ホッパーの切出口部へ搬送補助
ガスを吹込むことによって、該吹込ホッパーから粉体を
円滑に粉体搬送管に切出し可能とする。According to the present invention, the powder in the powder container at the lower part of the powder blowing hopper is always kept in a fluid state by the gas blowing and the rotation of the stirring blade, and when the powder is cut out from the blowing hopper, The powder can be smoothly cut out from the blow hopper into the powder transfer pipe by blowing the transfer auxiliary gas into the cutout portion of the blow hopper.
【０００９】[0009]
【実施例】以下、本発明の一実施例について説明する。EXAMPLES An example of the present invention will be described below.
【００１０】図１及び図２は、本発明を高炉への微粉炭
吹込みのための微粉炭供給装置として適用した例を示す
図である。FIGS. 1 and 2 are views showing an example in which the present invention is applied as a pulverized coal supply device for blowing pulverized coal into a blast furnace.
【００１１】予め所定の粒度範囲に調整された微粉炭Ｃ
を貯蔵する粉炭貯槽１の下部には、充填管２，２′、充
填弁３，３′を介して粉体吹込ホッパー４，４′が接続
されている。Pulverized coal C adjusted in advance to a predetermined particle size range
The powder blowing hoppers 4 and 4'are connected to the lower part of the pulverized coal storage tank 1 for storing the powders through the filling pipes 2 and 2'and the filling valves 3 and 3 '.
【００１２】この粉体吹込ホッパー４，４′の下部には
粉体収容容器５，５′が設けられ、粉体収容容器５，
５′内には攪拌翼６，６′が回転自在に設けられてお
り、攪拌翼６，６′は駆動装置Ｍ，Ｍ′により回転テー
ブル７，７′を介して回転する。Under the powder blowing hoppers 4 and 4 ', powder containing containers 5 and 5'are provided, and the powder containing containers 5 and 5'are provided.
The stirring blades 6 and 6'are rotatably provided in the 5 ', and the stirring blades 6 and 6'are rotated by the drive units M and M'via rotary tables 7 and 7'.
【００１３】粉体吹込ホッパー４，４′内の微粉炭の重
量を測定するためのロードセル８，８′での重量測定値
は制御装置１８，１８′に送信され、制御装置１８，１
８′により駆動装置Ｍ，Ｍ′の駆動を制御して攪拌翼
６，６′の回転を制御する。The weight measurement value at the load cell 8, 8'for measuring the weight of the pulverized coal in the powder blowing hopper 4, 4'is transmitted to the control device 18, 18 ', and the control device 18, 1'.
The drive of the drive devices M and M'is controlled by 8'to control the rotation of the stirring blades 6 and 6 '.
【００１４】粉体吹込ホッパー４，４′には該吹込ホッ
パー内の圧力を調整するための加圧ガス吹込管９，９′
が取付けられており、圧力計Ｐ，Ｐ′による吹込ホッパ
ー４，４′の圧力値に応じて圧力調整弁１０，１０′を
制御して加圧ガス吹込管９，９′からの加圧ガス吹込み
流量を制御する。The powder blowing hoppers 4, 4'are provided with pressurized gas blowing pipes 9, 9'for adjusting the pressure in the blowing hoppers.
Is installed, and the pressure control valve 10, 10 'is controlled according to the pressure value of the blow hopper 4, 4'by the pressure gauge P, P'and the pressurized gas from the pressurized gas blow pipe 9, 9'is Control the blowing flow rate.
【００１５】粉体収容容器５，５′内の攪拌翼６，６′
の上部には、収容容器５，５′内の微粉炭を流動化する
ための複数の吹出口１１0 ，１１01を有する流動化ガス
吹込管１１，１１′が取付けられており、これから収容
容器５，５′内に加圧ガスを吹込んで収容容器５，５′
内の微粉炭を流動状態に維持する。１２，１２′は吹込
調整弁である。Stirring blades 6, 6'in the powder container 5, 5 '
The upper, container 5,5 'fluidizing gas blowing tubes 11, 11 having a plurality of air outlets 11 0, 11 01 for fluidizing the pulverized coal in' is attached, from which container Blowing pressurized gas into the container 5,5 '
The pulverized coal inside is kept in a fluidized state. Reference numerals 12 and 12 'are blow regulating valves.
【００１６】粉体収容容器５，５′内の粉体排出口部５
０ ，５ ０ ′に搬送補助ガス吹込管１３，１３′が取付け
られており、収容容器５，５′から微粉炭を切出す際に
加圧ガスを吹き込んで微粉炭の切出し、搬送を補助す
る。１４，１４′は搬送補助ガス開閉弁である。 Powder discharge port 5 in powder container 5, 5 '
0, 5 0 is attached is' transport assisting gas blowing tubes 13 and 13 ', cut the pulverized coal from the container 5 and 5' by blowing pressurized gas when cutting out the pulverized coal, to assist the transport . Reference numerals 14 and 14 'are transfer auxiliary gas on-off valves.
【００１７】粉体吹込ホッパー４，４′は切替えて使用
するので、一方の粉体吹込ホッパーから微粉炭を供給し
ている場合には、他方の粉炭吹込ホッパー側の搬送補助
ガス吹込管１３の補助ガス開閉弁１４を閉じておいても
良い。Since the powder blowing hoppers 4 and 4'are used by being switched, when the pulverized coal is supplied from one of the powder blowing hoppers, the carrier auxiliary gas blowing pipe 13 of the other powder coal blowing hopper is used. The auxiliary gas on-off valve 14 may be closed.
【００１８】粉体収容容器５，５′からの切出管１５，
１５′は切出弁１６，１６′を介して高炉への粉体搬送
管１７に接続されている。粉体搬送管１７に切出された
粉炭は、搬送ガスによって高炉へ吹込まれる。Cut-out pipe 15 from powder container 5, 5 ',
Reference numeral 15 'is connected to a powder transfer pipe 17 to the blast furnace through cut-off valves 16 and 16'. The pulverized coal cut into the powder conveying pipe 17 is blown into the blast furnace by the carrier gas.
【００１９】便宜的に、例えば粉体吹込ホッパー４側か
らの微粉炭吹込みについて説明する。粉体収容容器５お
よび粉体吹込ホッパー４内に粉体貯槽１から充填管２、
充填弁３を介して微粉炭Ｃが供給充填されており、流動
化ガス吹込管１１のガス吹出口１１0 から流動化ガスの
吹込調節弁１２により空塔速度が一定になるように加圧
ガスが吹込まれ、粉体収容容器５および粉体吹込ホッパ
ー４内の微粉炭は流動化している。この状態で攪拌翼駆
動モータＭを駆動して回転テーブル７を回転し、攪拌翼
６を回転する。この状態では、粉体収容容器５内の微粉
炭は加圧ガスによって流動しているため、攪拌翼駆動モ
ータＭに対する起動抵抗は非常に小さい。従って、攪拌
翼駆動モータＭの容量は小さくてよく、例えば前記従来
例の場合に比し５０％程度の容量のもので十分である。For convenience, the injection of pulverized coal from the powder injection hopper 4 side will be described. From the powder storage tank 1 to the filling pipe 2 in the powder container 5 and the powder blowing hopper 4,
Pulverized coal C are supplied filled through the filling valve 3, pressurized gas as superficial velocity by blow regulating valve 12 of the fluidizing gas from the gas outlet 11 0 of the fluidizing gas blowing tubes 11 is constant Is blown, and the pulverized coal in the powder container 5 and the powder blowing hopper 4 is fluidized. In this state, the stirring blade drive motor M is driven to rotate the rotary table 7 and rotate the stirring blade 6. In this state, the pulverized coal in the powder container 5 is flowing by the pressurized gas, so the starting resistance to the stirring blade drive motor M is very small. Therefore, the capacity of the stirring blade drive motor M may be small, for example, a capacity of about 50% is sufficient as compared with the case of the conventional example.
【００２０】攪拌翼駆動モータＭの起動と同時に搬送補
助ガス開閉弁１４を操作して、搬送補助ガスを空塔速度
が一定になるように粉体排出口部５0 に吹出す。粉体切
出弁１６を開くと流動化用加圧ガスの作用との相乗効果
により、微粉炭は気流と良好な混合状態を維持しながら
粉体搬送管１７に切出しされ、搬送ガスによって粉体搬
送管１７を経て羽口から高炉炉内に吹込まれる。[0020] by operating a stirring blade driving motor M started the transport assisting gas on-off valve 14 at the same time, blow conveyance auxiliary gas to the powder outlet portion 5 0 as superficial velocity is constant. When the powder cut-off valve 16 is opened, the pulverized coal is cut out to the powder conveying pipe 17 while maintaining a good mixed state with the air flow due to the synergistic effect with the action of the pressurized gas for fluidization, and the powder is pulverized by the carrier gas. It is blown into the blast furnace from the tuyere via the carrier pipe 17.
【００２１】通常の場合、一方の粉体吹込ホッパー４か
ら粉体搬送管１７に微粉炭を供給している間は他方の粉
体吹込ホッパー４′からの微粉炭の供給は行わないが、
粉体吹込ホッパー４′内には微粉炭が充填され、常に流
動化のため流動化ガス吹込管１１′から加圧ガスを吹込
んで流動化状態を維持する。そして、粉体吹込ホッパー
４からの微粉炭吹込みの終了に合わせて攪拌翼６′を回
転して微粉炭と気流を攪拌し、均一混合すると共に、粉
体吹込ホッパー４′の排出口部に搬送補助ガスを吹き込
んで更に流動化し、粉体吹込ホッパー４からの粉炭切出
しの終了と同時に粉体切出弁１６′を開いて粉体吹込ホ
ッパー４′から微粉炭を粉体搬送管１７に切出し、高炉
へ連続的に吹込むことができる。Normally, while the pulverized coal is supplied from one powder blowing hopper 4 to the powder conveying pipe 17, the pulverized coal is not supplied from the other powder blowing hopper 4 '.
Pulverized coal is filled in the powder blowing hopper 4 ', and a pressurized gas is constantly blown from the fluidizing gas blowing pipe 11' for fluidization to maintain the fluidized state. Then, when the pulverized coal blowing from the powder blowing hopper 4 is completed, the stirring blade 6'is rotated to stir the pulverized coal and the air flow to uniformly mix them, and at the discharge port of the powder blowing hopper 4 '. The carrier auxiliary gas is blown to further fluidize, and at the same time as the end of the cutting of the pulverized coal from the powder blowing hopper 4, the powder cutting valve 16 'is opened and the pulverized coal is cut from the powder blowing hopper 4'to the powder conveying pipe 17. , Can be continuously blown into the blast furnace.
【００２２】なお、本実施例は高炉への微粉炭吹込みに
適用し、１個の粉体貯槽の下方に２個の粉体吹込ホッパ
ーを交互に切替え可能に設けているが、本発明はこの実
施例に限定されるものではなく、その適用対象も微粉炭
の他、鉱石粉、セメント、あるいはセメント原料等の搬
送、吹込み等の粉体の供給にも適用でき、その構造もそ
の適用対象によって適宜変更されることがある。The present embodiment is applied to the injection of pulverized coal into a blast furnace, and two powder injection hoppers are provided below one powder storage tank so that they can be alternately switched. The present invention is not limited to this example, and its application target is not only pulverized coal, but also applicable to the transportation of ore powder, cement, or cement raw material, and the supply of powder such as blowing, and its structure is also applicable. It may be changed depending on the target.
【００２３】[0023]
【発明の効果】本発明においては、粉体吹込ホッパーに
加圧ガスを吹込んで粉体を流動化して、該ホッパーの下
部における粉体攪拌翼に対する起動抵抗を小さくでき、
攪拌翼駆動モータを小容量化でき、また攪拌翼各種機械
部品等の損傷を軽減することができる。更に、排出口部
に搬送補助ガスを吹込んで粉体の攪拌と共に粉体と気流
との均一混合が十分に行われ、複数の粉体吹込ホッパー
を切替え使用する場合においても、切替え移行が極めて
スムーズにでき、粉体の安定的連続供給が可能である。According to the present invention, the pressurized gas is blown into the powder blowing hopper to fluidize the powder, and the starting resistance to the powder stirring blade in the lower portion of the hopper can be reduced.
The capacity of the stirring blade drive motor can be reduced, and damage to various mechanical components of the stirring blade can be reduced. In addition, the auxiliary gas is blown into the discharge port to stir the powder and mix the powder and air flow sufficiently, and even when switching between multiple powder blowing hoppers, the transition is extremely smooth. Therefore, stable and continuous supply of powder is possible.
【図１】本発明の粉体供給装置の一実施例の下部構造を
示す図である。FIG. 1 is a diagram showing a lower structure of an embodiment of a powder supply apparatus of the present invention.
【図２】本発明の粉体供給装置の一実施例を示す図であ
る。FIG. 2 is a diagram showing an example of a powder supply apparatus of the present invention.
１ 粉体貯槽 ２ 充填管 ３ 充填弁 ４ 粉体吹込ホッパー ５ 粉体収容容器５ ０ 粉体排出口部 ６ 攪拌器 ７ 回転テーブル ８ ロードセル ９ 加圧ガス吹込管 １０ 圧力調整弁 １１ 流動化ガス吹込管 １２ 吹込調整弁 １３ 搬送補助ガス吹込管 １４ 搬送補助ガス開閉弁 １５ 切出管 １６ 切出弁 １７ 粉体搬送管 １８ 制御装置1 powder reservoir 2 filled pipe 3 filling valves 4 powder blow hopper 5 the powder container 5 0 powder outlet portion 6 stirrer 7 turntable 8 load cell 9 a pressurized gas blow pipe 10 the pressure regulating valve 11 fluidizing gas injection Pipe 12 Blow adjustment valve 13 Transport auxiliary gas blow pipe 14 Transport auxiliary gas open / close valve 15 Cut-out pipe 16 Cut-out valve 17 Powder transfer pipe 18 Control device
Claims (1)
ッパーの下部にあって、攪拌翼を備えた粉体収容容器に
おいて、該粉体収容容器内の前記攪拌翼の上方に、該粉
体収容容器内の粉体を流動化させるガスを常時吹き込む
複数の吹出口を有する流動化ガス吹込管を備え、該粉体
収容容器内で前記攪拌翼の下方に設けた粉体排出口部
に、切出粉体の搬送を補助するガスを吹き込む搬送補助
ガス吹込管を備えたことを特徴とする粉体供給装置。[Claim 1] In the lower portion of the powder blow hopper which is placed below the powder reservoir, the powder container equipped with a stirring blade
The powder is placed above the stirring blade in the powder container.
Blowing the powder body storage container constantly Ruga scan fluidize
A fluidized gas injection pipe having a plurality of air outlets,
Powder discharge port provided below the stirring blade in the container
To, transport auxiliary blowing Ruga scan to assist in the transport of cut-out powder
A powder supply device comprising a gas blowing pipe .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3167431A JPH07100545B2 (en) | 1991-06-13 | 1991-06-13 | Powder feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3167431A JPH07100545B2 (en) | 1991-06-13 | 1991-06-13 | Powder feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04365725A JPH04365725A (en) | 1992-12-17 |
| JPH07100545B2 true JPH07100545B2 (en) | 1995-11-01 |
Family
ID=15849583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3167431A Expired - Lifetime JPH07100545B2 (en) | 1991-06-13 | 1991-06-13 | Powder feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07100545B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3033363U (en) * | 1996-07-09 | 1997-01-21 | 永田醸造機械株式会社 | Disc type raw material supply device |
| KR101276781B1 (en) * | 2010-12-14 | 2013-06-21 | (주)디에스리퀴드 | Automatic feeder preventing flux outlet from clogging for aluminum flux |
| JP6089927B2 (en) * | 2013-04-26 | 2017-03-08 | 新日鐵住金株式会社 | Method of monitoring pulverized coal supply facility and pulverized coal supply facility to blast furnace |
| CN112978293B (en) * | 2021-04-27 | 2023-09-15 | 成都光华科技发展有限公司 | Superfine high-purity micropowder powder feeder capable of realizing uniform metering powder feeding |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53128876A (en) * | 1977-04-13 | 1978-11-10 | Mitsui Miike Mach Co Ltd | Method for separating out pulverulent body of silo and its device |
| JPS63113021U (en) * | 1987-01-17 | 1988-07-20 |
-
1991
- 1991-06-13 JP JP3167431A patent/JPH07100545B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04365725A (en) | 1992-12-17 |
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