JP2662117B2 - Powder material supply method for airflow classifier and apparatus for implementing this method - Google Patents
Powder material supply method for airflow classifier and apparatus for implementing this methodInfo
- Publication number
- JP2662117B2 JP2662117B2 JP3243157A JP24315791A JP2662117B2 JP 2662117 B2 JP2662117 B2 JP 2662117B2 JP 3243157 A JP3243157 A JP 3243157A JP 24315791 A JP24315791 A JP 24315791A JP 2662117 B2 JP2662117 B2 JP 2662117B2
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- Japan
- Prior art keywords
- raw material
- powder
- classifier
- material supply
- airflow
- 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.)
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、気流分級機の粉体原料
供給方法、より詳しくは、気流分級機を原料供給処理状
態においたまま、噴射型原料供給機の噴出口付近に付着
した粉体を効率よく除去する気流分級機の粉体原料供給
方法、およびこの方法を実施するための装置に関する。 BACKGROUND OF THE INVENTION This invention is a powder raw material supply method of an air classifier, more particularly, while placing the air classifier to the raw material supply process conditions, the powder adhering to the vicinity of the ejection port of the injection-type material supplier powder material supply method of an air classifier to remove the body efficiently, and related to an apparatus for performing this method.
【０００２】[0002]
【従来の技術】従来、気流分級機へ粉体原料を供給する
方法として、例えば、図４に示すような噴射型原料供給
機を使用し、加圧空気によって粉体原料を吹き込む方法
が知られている。2. Description of the Related Art Conventionally, as a method of supplying a powder raw material to an airflow classifier, for example, a method of using an injection type raw material feeder as shown in FIG. 4 and blowing the powder raw material with pressurized air is known. ing.
【０００３】この方法によれば、図示しない空気供給源
からノズル１２に供給された供給空気１８は、ノズル１
２の開孔部から高速気流１９として噴出する。原料受け
１１内の粉体原料１０は、高速気流１９による圧力降下
によって高速気流１９内に引込まれ、次にディフユーザ
１３内で拡散され、粉体噴出管１５の噴出口１５ａから
後述する気流分級機に供給されて分級される。According to this method, the supply air 18 supplied from the air supply source (not shown) to the nozzle 12
The high-speed airflow 19 is ejected from the opening of No. 2. The powdery raw material 10 in the raw material receiver 11 is drawn into the high-speed airflow 19 by the pressure drop by the high-speed airflow 19, and then diffused in the diffuser 13, and is subjected to airflow classification described later from an outlet 15 a of the powder discharge pipe 15. It is supplied to the machine and classified.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記従来の
噴射型原料供給機において、粉体原料が微粉である場
合、粒子自体が内壁に付着しやすい性質があり、特に超
微粒子においては比表面積が非常に大きいので、空気湿
度及び圧縮空気中の湿分の影響により該原料供給機の噴
出口１５ａ付近の内壁に粉体が付着する傾向が著しい。However, in the above-mentioned conventional injection-type raw material feeder, when the powder raw material is a fine powder, the particles themselves tend to adhere to the inner wall. Since it is very large, powder tends to adhere to the inner wall near the ejection port 15a of the raw material feeder due to the influence of air humidity and moisture in the compressed air.
【０００５】そして、このように内壁に粉体が付着を始
めると、その付着物は次第に成長して、噴出口１５ａの
断面積を縮小せしめるため、原料供給量が減少し、結果
的に気流分級機の処理量が低下してしまう。[0005] When the powder begins to adhere to the inner wall in this way, the adhered substance gradually grows, and the cross-sectional area of the jet port 15a is reduced, so that the raw material supply amount is reduced, and as a result, the airflow classification is performed. Machine throughput will be reduced.
【０００６】しかるに、このような付着物の成長を放置
して運転を長時間継続したり、その付着が予想されるよ
りも早期に進んだ場合には、運転を休止させざるを得な
くなる事態になる。However, if the operation is continued for a long time while the growth of such deposits is left unattended, or if the deposition proceeds earlier than expected, the operation must be stopped. Become.
【０００７】そして、このように気流分級機の処理量が
減少し、運転の休止回数が多くなると、製品単位重量当
たりの製造費が高くなり、場合によっては経済性が失わ
れることになる。[0007] When the throughput of the airflow classifier decreases and the number of stoppages of the operation increases, the production cost per unit weight of the product increases, and in some cases, the economy is lost.
【０００８】例えば、後述の実施例に示すように、気流
分級機で超微粉石灰石を正常時には０．７ｔ／ｈ処理し
ている。ところが、原料供給機の噴出口付近の内壁に厚
さ１ｍｍの粉体が付着することによって、その処理量は
０．４ｔ／ｈと半分近くに低下する。[0008] For example, as shown in an embodiment to be described later, an ultra-fine limestone is normally treated at 0.7 t / h by an air flow classifier. However, when the powder having a thickness of 1 mm adheres to the inner wall near the ejection port of the raw material feeder, the processing amount is reduced to about 0.4 t / h, almost half.
【０００９】このような場合、これまでは運転員が定量
供給機を操作し原料供給機への原料供給量を減らして暫
時運転を継続し、更に処理量が低下した時点において装
置の運転を止めて、原料供給機を取り外し、人手で付着
物を除去しているのが実状である。In such a case, the operator has operated the fixed-quantity feeder to reduce the amount of the raw material supplied to the raw material feeder, continues the operation for a while, and stops the operation of the apparatus when the processing amount further decreases. Actually, the raw material feeder is removed and the deposits are manually removed.
【００１０】一方、本発明者らにより、原料供給機の先
端部材の内面処理も試みられたが、粉体による付着を防
止し付着状態を減らすことはできなかった。[0010] On the other hand, the present inventors have also tried to treat the inner surface of the tip member of the raw material feeder, but have not been able to prevent the powder from adhering and reduce the adhering state.
【００１１】本発明は、このような事情に鑑みてなされ
たもので、その目的は、気流分級機を原料供給処理状態
においたまま、噴射型原料供給機の噴出口付近に付着し
た粉体を効率よく除去する気流分級機の粉体原料供給方
法及びこの方法を実施するための装置を提供することに
ある。SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to remove powder adhering to the vicinity of a spout of an injection type material supply machine while keeping an air flow classifier in a material supply processing state. An object of the present invention is to provide a method for supplying a powdery raw material of an airflow classifier for efficiently removing a powdery material and an apparatus for performing the method.
【００１２】上記目的を達成する本発明の方法は、原料
供給機の管路の上流側から下流側に至る中間部分の対面
する側壁に、中心線が互いに交差しかつそれぞれ前記噴
出口付近の対面する内壁へ指向するように対角線方向を
狙って配設した対をなす気体導入用配管により、前記噴
出口付近の内壁へ向けて圧縮空気を間欠的にかつ交互に
噴出し、該部分に付着した粉体を吹き落し除去すること
を特徴とする。[0012] The method of the present invention to achieve the above object, raw materials
Facing the middle part from upstream to downstream of the feeder pipeline
Center lines cross each other and
Diagonal direction so that it is directed to the facing inner wall near the exit
Compressed air is intermittently and alternately ejected toward the inner wall near the ejection port by a pair of gas introduction pipes arranged in an aimed manner, and the powder adhering to the portion is blown off and removed. To do
It is characterized by .
【００１３】また、前記の方法を実施するための本発明
による装置は、管路の中間部分における対面する側壁
に、中心線が互いに交差しかつそれぞれ前記噴出口付近
の対面する内壁へ指向するように対角線方向を狙って配
設した対をなす気体導入用配管と、これら配管に配した
電磁弁と、これら電磁弁を開閉させ、前記配管により間
欠的にかつ交互に圧縮空気を前記管路内へ噴出させるタ
イマとを有することを特徴とする。The device according to the invention for carrying out the method described above also provides for the facing side walls in the middle of the conduit such that the center lines intersect each other and point in each case to the facing inner wall near the spout. A pair of gas introduction pipes arranged in a diagonal direction, solenoid valves arranged in these pipes, and these solenoid valves are opened and closed, and the pipes intermittently and alternately pressurized compressed air in the pipelines. and having a timer for ejecting the.
【００１４】[0014]
【作用】本発明による方法によれば、気流分級機を原料
供給処理状態においたまま、噴射型原料供給機の噴出口
付近に付着した粉体が効率よく除去される。従って、粉
体原料が壁面に付着しやすい微粉、超微粉である場合で
も、粉体の付着による気流分級機の処理量の低下や運転
の休止を回避することができる。According to the method of the present invention, the powder adhering to the vicinity of the injection port of the injection type raw material supply device is efficiently removed while the air flow classifier is in the raw material supply processing state. Therefore, even when the powder raw material is a fine powder or an ultrafine powder that easily adheres to the wall surface, it is possible to avoid a decrease in the throughput of the airflow classifier and a stoppage of the operation due to the adhesion of the powder.
【００１５】また、前記管路の中間部分における対面す
る側壁に、対をなす気体導入用配管をその中心線が互い
に交差しかつそれぞれ前記噴出口付近の対面する内壁へ
指向するように対角線方向を狙って配設し、該配管に配
した電磁弁とこれを開閉させるタイマとにより該配管に
それぞれ間欠的にかつ交互に圧縮空気を流して前記管路
内へ噴出させる装置を用いれば、前記粉体付着物の除去
が自動的にかつ対面する両壁面から効率よく行われる。Further, a pair of gas introduction pipes are diagonally arranged on the facing side wall at the intermediate portion of the pipe so that their center lines cross each other and are directed toward the facing inner wall near the jet port. The use of a device which is disposed aimingly, and which uses a solenoid valve disposed on the pipe and a timer for opening and closing the valve to intermittently and alternately flow compressed air through the pipe and eject the compressed air into the pipe, Removal of extraneous matter is automatically and efficiently performed from both facing wall surfaces.
【００１６】[0016]
【実施例】以下、本発明の一実施例を図面を参照しなが
ら説明する。An embodiment of the present invention will be described below with reference to the drawings.
【００１７】まず、本発明の実施に好適な装置について
説明する。First, an apparatus suitable for carrying out the present invention will be described.
【００１８】なお、図１は本発明を実施して気流分級機
へ粉体原料を供給している状態を示す系統図、図２及び
図３は本発明で使用する噴射型原料供給機の一例を示す
一部を切欠いた側面図及び平面図であり、図４と同一部
品は同一番号で示してある。FIG. 1 is a system diagram showing a state in which a powder material is supplied to an airflow classifier according to the present invention, and FIGS. 2 and 3 show an example of an injection type material supply device used in the present invention. 4 is a side view and a plan view with a part cut away, and the same parts as those in FIG. 4 are indicated by the same numbers.
【００１９】図１において、１は原料定量供給機、２は
噴射型原料供給機、３は気流分級機である。In FIG. 1, reference numeral 1 denotes a material feeder, 2 denotes an injection type feeder, and 3 denotes an airflow classifier.
【００２０】前記原料定量供給機１としては、図示のよ
うに、原料ホッパ１ａ内の粉体原料１０がテーブルフィ
ーダ１ｂにより切出されて振動フィーダ１ｃを経て供給
される形式のものなどを用いることができる。As the raw material quantitative feeder 1, as shown in the figure, a type in which a powder raw material 10 in a raw material hopper 1a is cut out by a table feeder 1b and supplied through a vibrating feeder 1c is used. Can be.
【００２１】また、前記気流分級機３としては、例え
ば、日鉄鉱業社製エルボージェット分級機などを用いる
ことができる。As the air classifier 3, for example, an elbow jet classifier manufactured by Nippon Steel Mining Co., Ltd. can be used.
【００２２】前記噴射型原料供給機２は、本実施例で
は、図２、３に示すように、原料受け１１、ノズル１
２、ディフユーザ１３、連結管１４、粉体噴出管１５と
から構成されている。In the present embodiment, as shown in FIGS. 2 and 3, the injection type raw material feeder 2 includes a raw material receiver 11 and a nozzle 1.
2, a diffuser 13, a connecting pipe 14, and a powder ejection pipe 15;
【００２３】気体導入用配管は、図３に示すように、連
結管１４の対面する側壁の穿孔に挿着された対をなす配
管１６ａ、１６ｂを有し、それぞれの配管１６ａ、１６
ｂは図示のように、平面視で、その中心線が互いに交差
しかつそれぞれ噴出口１５ａ付近の対面する内壁へ指向
するように対角線方向を狙って配置されている。また、
該配管１６ａ、１６ｂは、図２に示すように、側面視
で、その中心線が、上流側から下流側に向って僅かの角
度δで下がるように下向きに傾斜している。なお、前記
配管１６ａ、１６ｂの中心線が側壁に対してなす角度
θ、及び該配管１６ａ、１６ｂの下向き角度δは、付着
物の除去に適切な角度に選定される。As shown in FIG. 3, the gas introducing pipes have a pair of pipes 16a and 16b inserted into perforations in the side wall of the connecting pipe 14 facing each other.
As shown in the drawing, b is arranged in a diagonal direction so that the center lines thereof intersect with each other in a plan view and are directed to the facing inner walls near the ejection port 15a. Also,
As shown in FIG. 2, the pipes 16a and 16b are inclined downward such that the center line thereof is lowered at a slight angle δ from the upstream side to the downstream side in a side view. The angle θ formed by the center lines of the pipes 16a and 16b with respect to the side wall and the downward angle δ of the pipes 16a and 16b are selected to be appropriate angles for removing attached matter.
【００２４】更に、前記配管１６ａ、１６ｂには、それ
ぞれ配管の途中に電磁弁１７ａ、１７ｂが設けられ、該
電磁弁１７ａ、１７ｂは、それぞれ図示しないタイマに
より任意の時間間隔で一定の時間、圧縮空気を交互に流
すように開閉される。Further, solenoid valves 17a and 17b are provided in the pipes 16a and 16b, respectively, in the middle of the pipes, and the solenoid valves 17a and 17b are compressed by a timer (not shown) for a predetermined time at arbitrary time intervals. It is opened and closed so that air flows alternately.
【００２５】次に、上記装置を用いた粉体原料供給方法
について説明する。Next, a method of supplying a raw material powder using the above-described apparatus will be described.
【００２６】図１において、原料ホッパ１ａ内の粉体原
料１０がテーブルフィーダ１ｂにより切出されて振動フ
ィーダ１ｃを経て噴射型原料供給機２の原料受け１１に
供給される。In FIG. 1, a powder raw material 10 in a raw material hopper 1a is cut out by a table feeder 1b and supplied to a raw material receiver 11 of an injection type raw material feeder 2 via a vibration feeder 1c.
【００２７】一方、図２、３において、図示しない空気
供給源からノズル１２に供給された供給空気１８は、ノ
ズル１２の開孔部から高速気流１９として噴出する。原
料受け１１内の粉体原料１０は、高速気流１９による圧
力降下によって高速気流１９内に引込まれ、次にディフ
ユーザ１３内で拡散され、粉体噴出管１５の噴出口１５
ａから気流分級機３へ供給されて分級される。On the other hand, in FIGS. 2 and 3, the supply air 18 supplied to the nozzle 12 from an air supply source (not shown) is blown out as a high-speed airflow 19 from the opening of the nozzle 12. The powder raw material 10 in the raw material receiver 11 is drawn into the high-speed air flow 19 due to a pressure drop by the high-speed air flow 19, and then diffused in the diffuser 13, and is discharged from the powder outlet 15 of the powder discharge pipe 15.
a to the airflow classifier 3 for classification.
【００２８】次いで、図１に示すように、微粉出口３ａ
から引出された粒度の細かい部分は図示しないバグフィ
ルタにより微粉として、また中間粉出口３ｂから引出さ
れた中間粒度の部分は図示しないバグフィルタにより中
間粉として、さらに粗粉出口３ｃから引出された粒度の
粗い部分は図示しないバグフィルタにより粗粉としてそ
れぞれ回収される。以上の構成は、従来のものと同様で
ある。Next, as shown in FIG. 1, the fine powder outlet 3a
The portion having a small particle size drawn out from the filter is not shown as fine powder by a bag filter (not shown), the portion having an intermediate particle size drawn out from the intermediate powder outlet 3b is converted into an intermediate powder by a bag filter not shown, and the particle size drawn out from the coarse powder outlet 3c. Are collected as coarse powder by a bag filter (not shown). The above configuration is the same as the conventional one.
【００２９】ここで、本実施例では、図３に示すよう
に、電磁弁１７ａ、１７ｂとこれを開閉させる図示しな
いタイマとによって任意の時間間隔で一定の時間、圧縮
空気を気体導入用配管１６ａ、１６ｂから交互に導入
し、粉体噴出管１５の噴出口１５ａ付近の内壁に付着し
た粉体を吹き落すようにしている。In this embodiment, as shown in FIG. 3, the compressed air is supplied to the gas introduction pipe 16a for a predetermined time at arbitrary time intervals by electromagnetic valves 17a and 17b and a timer (not shown) for opening and closing the valves. , 16b alternately, so that powder adhering to the inner wall near the ejection port 15a of the powder ejection pipe 15 is blown down.
【００３０】従って、本実施例によれば、気流分級機を
原料供給処理状態においたまま、噴射型原料供給機の噴
出口付近に付着した粉体が効率よく除去され、粉体原料
が壁面に付着しやすい微粉、超微粉である場合でも、粉
体の付着による気流分級機の処理量の低下や運転の休止
を回避することができる。Therefore, according to the present embodiment, the powder adhering to the vicinity of the ejection port of the injection type material supply machine is efficiently removed while the air flow classifier is in the material supply processing state, and the powder material is removed from the wall surface. Even in the case of fine powder or ultra-fine powder that easily adheres, it is possible to avoid a reduction in the throughput of the airflow classifier and a stoppage of operation due to the adhesion of the powder.
【００３１】なお、粉体付着物を除去するのに適した吹
き落し速度、方向、風量、吹き落し時間及び時間間隔な
どは、付着物の性状や付着状態によって違いがあるとこ
ろから、圧縮空気の使用効率を高めるため、予め幾つか
の内径の異なった気体導入用配管１６ａ、１６ｂを配し
た連結管１４を準備しておいて、適宜選択するのが望ま
しい。The blow-down speed, direction, air volume, blow-down time and time interval, etc., suitable for removing powder deposits vary depending on the properties of the deposits and the state of adhesion. In order to increase the use efficiency, it is desirable to prepare in advance a connecting pipe 14 in which several gas introducing pipes 16a and 16b having different inner diameters are arranged, and appropriately select them.
【００３２】また、上記実施例におけるノズル１２、デ
ィフユーザ１３、連結管１４、粉体噴出管１５等は、図
示の例の長方形断面のものに限定されるものではなく、
このほか正方形断面のものなど適宜に選定することがで
きる。Further, the nozzle 12, the diffuser 13, the connecting pipe 14, the powder ejection pipe 15 and the like in the above embodiment are not limited to those having a rectangular cross section in the illustrated example.
In addition, a square cross section or the like can be appropriately selected.
【００３３】実験例 以下、実験例をあげてさらに詳しく説明する。EXPERIMENTAL EXAMPLES Hereinafter, experimental examples will be described in more detail.
【００３４】本例は、日鉄鉱業社製エルボージェット分
級機（ＥＪ−７５型）を用い、原料として比面積２０，
０００ｍ2／ｇ（平均径０．９μｍ）の超微粉石灰石を
処理量０．７ｔ／ｈで連続分級する場合の従来法及び本
発明法による実験例である。In this example, an elbow jet classifier (Model EJ-75) manufactured by Nippon Steel Mining Co., Ltd. was used.
This is an example of an experiment using the conventional method and the method according to the present invention in the case of continuously classifying ultrafine limestone of 000 m 2 / g (average diameter 0.9 μm) at a treatment amount of 0.7 t / h.
【００３５】従来法：原料供給機は、図４に示すように
構成された噴射型であり、粉体噴出管１５の噴出口１５
ａの寸法は幅７５ｍｍ×高さ４ｍｍ、風量５．４Ｎｍ3
／ｍｉｎ、噴出口風速３００ｍ／ｓｅｃとなっている。Conventional method: The raw material feeder is of an injection type configured as shown in FIG.
The dimension of a is 75mm in width x 4mm in height, and the air volume is 5.4Nm 3
/ Min, and the wind velocity at the outlet is 300 m / sec.
【００３６】この従来法のものは、１日（２４時間）で
厚さ約１ｍｍの付着物が成長し、処理量は０．４ｔ／ｈ
程度の水準に落ちるため、最低でも１日１回は装置の運
転を止め、原料供給機を取り外して付着物を除去する必
要があった。そして、この付着物除去のために必要な時
間は、運転休止から運転再開まで約１〜２時間を必要と
した。In this conventional method, a deposit having a thickness of about 1 mm grows in one day (24 hours), and the treatment amount is 0.4 t / h.
In order to fall to the standard level, it was necessary to stop the operation of the apparatus at least once a day and remove the raw material feeder to remove deposits. The time required for removing the deposits required about 1 to 2 hours from suspension of operation to resumption of operation.
【００３７】本発明法：図２、３に示すように、噴射型
原料供給機の粉体噴出管１５とディフユーザ１３との間
に、長さ１５０ｍｍの連結管１４を挿入し、前記噴出管
１５の噴出口１５ａから上流側２８２ｍｍの所へ、内径
８ｍｍφの気体導入用配管１６ａ、１６ｂを両側壁に１
本ずつ、側壁に対しθ＝１５°の角度で、かつ下向き角
度δ＝２°をもって配設した。The method of the present invention: As shown in FIGS. 2 and 3, a connecting pipe 14 having a length of 150 mm is inserted between the powder ejection pipe 15 and the diffuser 13 of the injection type material supply machine. The gas introduction pipes 16a, 16b having an inner diameter of 8 mmφ are placed on both side walls from the injection port 15a of No. 15 to a place of 282 mm on the upstream side.
Each book was disposed at an angle of θ = 15 ° and a downward angle δ = 2 ° with respect to the side wall.
【００３８】この配管１６ａ、１６ｂへ圧力５Ｋｇ／ｃ
ｍ2の圧縮空気を供給し、電磁弁１７ａ、１７ｂをタイ
マで開閉し、圧縮空気を交互に噴出させて噴出口１５ａ
付近の内壁に付着した粉体の自動除去を行った。A pressure of 5 kg / c is applied to the pipes 16a and 16b.
supplying compressed air m 2, the solenoid valves 17a, 17b open and close by a timer, the compressed air is ejected alternately spout 15a
Automatic removal of powder adhering to the nearby inner wall was performed.
【００３９】このときの時間間隔は、８時間につき１回
の割合で８時間毎であり、片側の電磁弁１７ａを３ｓｅ
ｃ開き、閉じて３ｓｅｃ経ってから、他方側の電磁弁１
７ｂを３ｓｅｃ開とするのが、付着物の吹き落しに対し
て最も効果的であった。At this time, the time interval is once every eight hours, every eight hours, and the solenoid valve 17a on one side is turned on for three seconds.
Open and close after 3 seconds, then the other side solenoid valve 1
Opening 7b for 3 seconds was the most effective for blowing off the deposits.
【００４０】この方法により、処理量０．７ｔ／ｈで運
転状態のまま付着物を自動的に除去し、連続操業を支障
なく行うことができた。According to this method, the deposits were automatically removed while the operating state was at a processing amount of 0.7 t / h, and continuous operation could be performed without any trouble.
【００４１】なお、この１回に使う圧縮空気量は、６ｓ
ｅｃ間で４６Ｎｌであり、この間に通過する原料供給機
風量５４０Ｎｌに比較すると約８％で非常に少なく、分
級成績に与える悪影響は全く認められなかった。The amount of compressed air used at one time is 6 seconds.
The ec was 46 Nl, which was very small at about 8% as compared with the flow rate of the raw material feeder passing through 540 Nl during this time, and no adverse effect on the classification results was observed at all.
【００４２】また、配管１６ａ、１６ｂとして、内径４
ｍｍφ、６ｍｍφ、８ｍｍφ及び１０ｍｍφの４種類を
準備して実験したが、この場合の付着物除去に対して
は、内径４ｍｍφのものが最も効果的であった。The pipes 16a and 16b have an inner diameter of 4 mm.
An experiment was conducted by preparing four types of mmφ, 6 mmφ, 8 mmφ, and 10 mmφ. In this case, the one with an inner diameter of 4 mmφ was the most effective for removing deposits.
【００４３】[0043]
【発明の効果】以上説明したことから明らかなように本
発明は、以下の効果を奏するものである。As is apparent from the above description, the present invention has the following effects.
【００４４】本発明の方法によれば、気流分級機を原料
供給処理状態においたまま、噴射型原料供給機の噴出口
付近に付着した粉体を効率よく除去することができる。
従って、粉体原料が壁面に付着しやすい微粉、超微粉で
ある場合でも、粉体の付着による気流分級機の処理量の
低下や運転の休止を回避することができる。According to the method of the present invention, the powder adhering to the vicinity of the ejection port of the injection type material supply machine can be efficiently removed while the air classifier is in the material supply processing state.
Therefore, even when the powder raw material is a fine powder or an ultrafine powder that easily adheres to the wall surface, it is possible to avoid a decrease in the throughput of the airflow classifier and a stoppage of the operation due to the adhesion of the powder.
【００４５】また、前記管路の中間部分における対面す
る側壁に、対をなす気体導入用配管をその中心線が互い
に交差しかつそれぞれ前記噴出口付近の対面する内壁へ
指向するように配設し、該配管に配した電磁弁とこれを
開閉させるタイマとにより該配管にそれぞれ間欠的にか
つ交互に圧縮空気を流して前記管路内へ噴出させる本発
明による装置を用いれば、前記粉体付着物の除去が自動
的にかつ対面する両壁面から効率よく行なわれ、前述の
本発明の方法を好都合に実施することができる。Further, a pair of gas introduction pipes are arranged on the facing side wall in the middle part of the pipe so that their center lines cross each other and are directed to the facing inner wall near the jet port. The apparatus according to the present invention, in which compressed air is intermittently and alternately flowed through the pipe by a solenoid valve disposed on the pipe and a timer for opening and closing the same to eject the compressed air into the pipe, is used. Kimono removal is performed automatically and efficiently from both facing wall surfaces, and the above-described method of the present invention can be conveniently carried out.
【図１】図１は本発明の実施例を示す系統図である。FIG. 1 is a system diagram showing an embodiment of the present invention.
【図２】図２は本発明で使用する噴射型原料供給機の一
例を示す一部を切欠いた側面図である。FIG. 2 is a partially cutaway side view showing an example of an injection-type raw material feeder used in the present invention.
【図３】図３は図２の噴射型原料供給機の一部を切欠い
た平面図である。FIG. 3 is a plan view of the injection-type raw material feeder of FIG. 2 with a part cut away.
【図４】図４は従来の噴射型原料供給機を示す一部を切
欠いた側面図である。FIG. 4 is a partially cutaway side view showing a conventional injection-type raw material feeder.
１ … 原料定量供給機 １ａ … 原料ホッパ １ｂ … テーブルフィーダ １ｃ … 振動フィーダ ２ … 噴射型原料供給機 ３ … 気流分級機 ３ａ、３ｂ、３ｃ … 分級産物出口 １０ … 粉体原料 １１ … 原料受け １２ … ノズル １３ … ディフユーザ １４ … 連結管 １５ … 粉体噴出管 １５ａ… 噴出口 １６ａ、１６ｂ … 気体導入用配管 １７ａ、１７ｂ … 電磁弁 １８ … 供給空気 １９ … 高速気流 DESCRIPTION OF SYMBOLS 1 ... Material feeder 1a ... Material hopper 1b ... Table feeder 1c ... Vibration feeder 2 ... Injection type material feeder 3 ... Air flow classifier 3a, 3b, 3c ... Classification product outlet 10 ... Powder material 11 ... Material receiver 12 ... Nozzle 13… Diffuser 14… Connecting pipe 15… Powder ejection pipe 15a… Outlet 16a, 16b… Gas introduction pipe 17a, 17b… Solenoid valve 18… Supply air 19… High-speed airflow
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−85725（ＪＰ，Ａ) 実開 昭58−161644（ＪＰ，Ｕ) 特公 昭63−26046（ＪＰ，Ｂ２) ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-85725 (JP, A) JP-A-58-161644 (JP, U) JP-B-63-26046 (JP, B2)
Claims (2)
高速気流により搬送し下流側の噴出口から気流分級機へ
吹き込む気流分級機の粉体原料供給方法において、前記
管路の上流側から下流側に至る中間部分の対面する側壁
に、中心線が互いに交差しかつそれぞれ前記噴出口付近
の対面する内壁へ指向するように対角線方向を狙って配
設した対をなす気体導入用配管により、前記噴出口付近
の内壁へ向けて圧縮空気を間欠的にかつ交互に噴出し、
該部分に付着した粉体を吹き落し除去することを特徴と
する気流分級機の粉体原料供給方法。In a method of supplying a powdery raw material of an airflow classifier, a powdery raw material is conveyed in a pipe of an injection type raw material feeder by a high-speed airflow and blown into a gasflow classifier from an outlet on a downstream side. Facing side wall of the middle part from upstream to downstream
And the center lines cross each other and each is near the spout
Aim diagonally so that it points to the inner wall facing
By the paired gas introduction pipes , compressed air is intermittently and alternately jetted toward the inner wall near the jet port,
It is characterized in that the powder attached to the part is blown off and removed.
Raw material supply method of the airflow classifier to be used.
高速気流により搬送し、下流側の噴出口から気流分級機
へ吹き込む気流分級機の粉体原料供給装置において、 前記管路の中間部分における対面する側壁に、中心線が
互いに交差しかつそれぞれ前記噴出口付近の対面する内
壁へ指向するように対角線方向を狙って配設した対をな
す気体導入用配管と； これら配管に配した電磁弁と； これら電磁弁を開閉させ、前記配管により間欠的にかつ
交互に圧縮空気を前記管路内へ噴出させるタイマと； を有することを特徴とする、請求項１に記載の方法を実
施するための粉体原料供給装置。2. A powdery raw material is fed through a pipeline of an injection type raw material supply machine.
In a powder material supply device of an airflow classifier that is conveyed by a high-speed airflow and blows into a gasflow classifier from a downstream outlet, a center line intersects a facing side wall in an intermediate portion of the pipeline and each of the injection lines has A pair of gas introduction pipes arranged in a diagonal direction so as to be directed to the facing inner wall near the outlet; a solenoid valve arranged in these pipes; and a solenoid valve opened and closed; And a timer for alternately blowing compressed air into the conduit. A powder material supply apparatus for performing the method according to claim 1, further comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3243157A JP2662117B2 (en) | 1991-09-24 | 1991-09-24 | Powder material supply method for airflow classifier and apparatus for implementing this method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3243157A JP2662117B2 (en) | 1991-09-24 | 1991-09-24 | Powder material supply method for airflow classifier and apparatus for implementing this method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0577934A JPH0577934A (en) | 1993-03-30 |
| JP2662117B2 true JP2662117B2 (en) | 1997-10-08 |
Family
ID=17099657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3243157A Expired - Fee Related JP2662117B2 (en) | 1991-09-24 | 1991-09-24 | Powder material supply method for airflow classifier and apparatus for implementing this method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2662117B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010091647A (en) * | 2008-10-06 | 2010-04-22 | Canon Inc | Toner manufacturing device and method for manufacturing toner |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4337236A (en) * | 1980-08-07 | 1982-06-29 | Olin Corporation | Process for manufacture of calcium hypochlorite |
| JPS5785725A (en) * | 1980-11-14 | 1982-05-28 | Mitsubishi Heavy Ind Ltd | Method of conveying powder by air |
| JPH0648805B2 (en) * | 1986-07-18 | 1994-06-22 | 日本電気株式会社 | TDM frame synchronization establishment method |
-
1991
- 1991-09-24 JP JP3243157A patent/JP2662117B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0577934A (en) | 1993-03-30 |
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