JPH09286488A - Elimination of bridging in powder/granule hopper - Google Patents
Elimination of bridging in powder/granule hopperInfo
- Publication number
- JPH09286488A JPH09286488A JP8093946A JP9394696A JPH09286488A JP H09286488 A JPH09286488 A JP H09286488A JP 8093946 A JP8093946 A JP 8093946A JP 9394696 A JP9394696 A JP 9394696A JP H09286488 A JPH09286488 A JP H09286488A
- Authority
- JP
- Japan
- Prior art keywords
- hopper
- hanging
- powder
- bridging
- air
- 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.)
- Pending
Links
Landscapes
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ホッパーに貯留し
た粉粒体を定量排出コンベヤにより連続して切出す際、
貯留されている粉粒体が棚吊りすることにより生じる誤
配合や原料切れによる操業の中断等のトラブルを回避す
るための棚吊り除去方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, when the powder or granular material stored in the hopper is continuously cut out by a constant amount discharge conveyor,
The present invention relates to a hanging removal method for avoiding troubles such as erroneous blending caused by hanging of stored powder and granules and interruption of operation due to running out of raw materials.
【０００２】[0002]
【従来の技術】ホッパーに貯留された粉粒体は、その粒
度が細かいほど、水分の含有量が多いほど棚吊りを生じ
易い。この棚吊りを防ぐため、従来よりホッパー形状を
非対称とする等の棚吊りが起きにくい構造としたり、ホ
ッパー内壁に付着防止材を張設する、或いは付着防止被
膜をコーティングする等の棚吊りを防止するための構造
上の対策が講じられてきた。2. Description of the Related Art The finer the particle size of a powder or granular material stored in a hopper, the more the content of water, and the more likely it is to suspend. In order to prevent this hanging, it has a structure that makes it difficult for hanging, such as making the hopper shape asymmetrical than before, and prevents hanging by sticking an anti-sticking material on the inner wall of the hopper or coating an anti-sticking film. Structural measures have been taken to do so.
【０００３】一方、棚吊りが発生した場合の除去対策と
して、棚吊りが、通常ホッパーの下部の粉粒体排出口付
近に集中して起こることから、ホッパー下部の外壁に振
動を与えるバイブレータや打撃を加えるマグハンマーを
取付け、周期的に作動させることにより棚吊りを落とす
方法が行われている。On the other hand, as a measure for removing the hanging in the case of hanging, since the hanging is usually concentrated near the discharge port of the granular material at the lower part of the hopper, a vibrator or striking that gives vibration to the outer wall of the lower part of the hopper. The method of dropping the hangings is performed by installing a mag hammer that adds the.
【０００４】また、ホッパー内部の粉粒体に直接、力を
与え棚吊りを落とす方法が提案されている。その例とし
て、「ホッパーの下部において可撓性の索条体を上下動
および揺動するようにしたもの」（実開平４−１１５１
９７号；イ号方法）、「ホッパー下部にら旋状体を設け
てこれを回転させるもの」（実開昭５７−４３２８４
号；ロ号方法）或いは、「棚吊りが頻発する場所に蓄圧
された気体を一気に噴出させ、棚吊りしている粉体層を
崩すもの」（ハ号方法）がある。Further, a method has been proposed in which a powder suspension in the hopper is directly given a force to drop the suspension. As an example thereof, "a flexible cord is made to move up and down and swing in the lower part of a hopper" (Actually, Kaikai 4-1151).
No. 97; Method No. A), "A spiral-shaped body is provided in the lower part of a hopper and this is rotated" (Actual No. 57-43284).
No .; No. B method) or "a method in which the accumulated gas is blown out at once in a place where hanging is frequently performed to destroy the suspended powder layer" (Ha method).
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
方法には以下に述べるようにそれぞれ問題があった。However, each of the conventional methods has problems as described below.
【０００６】ホッパー形状を工夫する方法では、貯留す
る粉粒体の粒度や含水量が一定の範囲内でしか効果がな
く、粒度や含水量が前記範囲を越えて変化する操業条件
下では棚吊りが発生する。また、ホッパー内部に付着防
止材を張る対策は、付着防止材の摩耗劣化により経時的
に効果が無くなってしまう。The method of devising the shape of the hopper is effective only when the particle size and the water content of the powder or granules to be stored are within a certain range, and is suspended under operating conditions where the particle size and the water content change beyond the above range. Occurs. Further, the measure of applying the anti-adhesion material inside the hopper becomes ineffective over time due to wear deterioration of the anti-adhesion material.
【０００７】バイブレータまたはマグハンマーにより、
ホッパー外壁に振動または打撃を与える方法では、振動
または打撃のエネルギーの大半が外壁に吸収されるた
め、ホッパーが大きなものになるほど、加える力を大き
くする必要があり、設備費が増大するとともにホッパー
壁に割れや亀裂を発生させたり、ホッパー内壁に張られ
たバサルト等の付着防止材を脱落させるといった問題を
起こすことがある。さらに、振動や打撃を加えることに
より粉粒体が、より一層圧密される結果、棚吊りを一層
助長する場合もある。With a vibrator or a mag hammer,
In the method of vibrating or striking the outer wall of the hopper, most of the energy of vibration or striking is absorbed by the outer wall, so the larger the hopper, the more force needs to be applied, and the equipment cost increases and the hopper wall increases. This may cause problems such as cracks and cracks on the inner surface of the hopper, and dropping of anti-adhesion materials such as basalt attached to the inner wall of the hopper. Furthermore, as a result of the powder or granular material being further consolidated by the application of vibration or impact, hanging in some cases may be further promoted.
【０００８】イ号の「可撓性の索条体を上下動および揺
動するようにしたもの」は、設備費が高価であるのに加
え、索条体が粉粒体により摩耗するため定期的に取替が
必要となる。さらに、索条体に粉粒体が付着すると、そ
の上下動および揺動が阻害され、棚吊り落とし効果が無
くなる。[0008] The item No. A, "A flexible cord that is moved up and down and oscillated" has a high equipment cost, and in addition, the cord is regularly worn by powder and granules. Need to be replaced. Further, when the granular material adheres to the cord, the vertical movement and swing of the granular material are obstructed, and the effect of hanging off the shelf is lost.
【０００９】ロ号の「ら旋状体を設けてこれを回転させ
るもの」は、設備費が高価であるのに加え、索条体が粉
粒体により摩耗するため定期的に取替が必要となる。[0009] The item "B, which is provided with a spiral-shaped body and rotates it" requires high equipment cost, and in addition, since the cord body is worn by the granular material, it needs to be replaced periodically. Becomes
【００１０】ハ号の「棚吊りが頻発する場所に蓄圧され
た気体を一気に噴出させ、棚吊りしている粉体層を崩す
もの」は、設備費も廉価であり、また設備も簡単である
ため、複数個のホッパーを使用する場合、非常に有効な
方法である。しかし、気体の噴出口の面積が限られるた
め、エアブラスタといった気体噴出手段をホッパーの棚
吊り箇所に単純に取付けるだけでは、効果が十分得られ
なかった。[0010] In No. Ha, "a device in which gas accumulated in a place where hangings frequently occur is blown out at a stroke to destroy the suspended powder layer", the equipment cost is low and the equipment is simple. Therefore, it is a very effective method when using a plurality of hoppers. However, since the area of the gas ejection port is limited, simply attaching the gas ejection means such as an air blaster to the position where the hopper is suspended has not been sufficiently effective.
【００１１】本発明は、上記のような問題を解決する設
備費が安価で確実に棚吊りを除去する方法を提供するこ
とを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for eliminating the above-mentioned problems, in which the equipment cost is low and the hanging is surely removed.
【００１２】[0012]
【課題を解決するための手段】本発明は上記目的を、粉
粒体ホッパーの棚吊りする内部側壁近傍に高圧気体を噴
出する二本の導出管を、上下方向に一定間隔を有し且
つ、ホッパー円周方向において隣合う導出管のなす角度
が７０°〜１２０°となるように設け、粉粒体を定量切
り出しするベルトフィーダの負荷率が下限値以下になっ
たとき、前記複数本の導出管から高圧気体を一気に吹き
出し、棚吊りを除去する粉粒体ホッパーの棚吊り除去方
法により達成する。SUMMARY OF THE INVENTION The present invention has the above object of providing two outlet pipes for ejecting high-pressure gas in the vicinity of an inner side wall of a powdery or granular material hopper that is suspended from a shelf and having a constant interval in the vertical direction, When the load factor of the belt feeder for quantitatively cutting out the granular material is equal to or less than the lower limit value, the plurality of lead-out pipes are provided so that the angle between adjacent lead-out pipes in the circumferential direction of the hopper is 70 ° to 120 °. This is accomplished by a method of suspending and suspending a powdery or granular material hopper in which high-pressure gas is blown out from a pipe at once and the suspension is removed.
【００１３】「作用」粉粒体を貯留し、下部より粉粒体
を連続的に切出すホッパーの棚吊りは、粉粒体の性状に
大幅な変化がない限りホッパー下部の一定場所に発生す
る。従って、その場所に、気体噴出手段であるエアブラ
スタを取り付けることは棚吊り除去に有効な方法であ
る。しかし、一定量の気体を蓄圧し、一気に噴出させる
エアブラスタの一回の気体噴出量で崩落させ得る粉粒体
量は限られており、１個のエアブラスタで大量の粉粒体
を貯留する大容量ホッパー（例えば、２００ｍ3 以上）
の棚吊り除去を行うことはできない。"Operation" The suspension of the hopper, which stores the granular material and continuously cuts the granular material from the lower part, occurs at a certain place under the hopper unless the properties of the granular material are significantly changed. . Therefore, attaching an air blaster, which is a gas ejecting means, to the location is an effective method for removing the hanging. However, the amount of powder or granules that can be collapsed by a single gas blast of the air blaster, which accumulates a certain amount of gas and ejects it all at once, is large, and one air blaster can store a large amount of powder and granules. Hopper (for example, 200m 3 or more)
Can not be removed by hanging.
【００１４】本発明では、粉粒体ホッパーの棚吊りする
内部側壁近傍に高圧気体を噴出する二本の導出管を、上
下方向に一定間隔を有し且つ、ホッパー円周方向におい
て隣合う導出管のなす角度が７０°〜１２０°となるよ
うに設けて、高圧気体を噴出させるから、２箇所の噴出
口から吹き出す気体の棚吊りした粉粒体を崩落させる力
が、相互に効率よく作用し合って、少ない導出管でも棚
吊りを確実に除去することができる。In the present invention, two outlet pipes for ejecting high-pressure gas are provided in the vicinity of the inner side wall of the granular hopper which is suspended, and the outlet pipes are arranged at regular intervals in the vertical direction and are adjacent to each other in the circumferential direction of the hopper. Since the high-pressure gas is ejected by providing the angle formed by 70 ° to 120 °, the force of collapsing the suspended particles of the gas ejected from the two ejection ports efficiently acts on each other. As a result, the hanging can be reliably removed even with a small number of outlet pipes.
【００１５】また、ベルトフィーダの負荷率が下限値以
下になったときに、高圧気体を噴出させ、棚吊りを除去
するから、誤配合や原料切れによる操業の中断を回避す
ることができる。Further, when the load factor of the belt feeder becomes equal to or lower than the lower limit value, high-pressure gas is jetted to remove the hanging from the rack, so that it is possible to avoid the interruption of operation due to erroneous blending or running out of raw materials.
【００１６】ホッパー円周方向において隣合う導出管の
なす角度を７０°〜１２０°としたのは、７０°未満の
場合は、棚吊りを形成している粉粒体のホッパー円周方
向での崩落する範囲が狭く、棚吊りを完全に除去するこ
とができないからであり、１２０°を越える場合は、棚
吊りを形成している粉粒体の円周方向での崩落範囲が連
続せず、棚吊りを完全に除去することができないからで
ある。The angle between adjacent outlet pipes in the circumferential direction of the hopper is set to 70 ° to 120 °. When the angle is less than 70 °, the powder and granules for hanging are measured in the circumferential direction of the hopper. This is because the falling range is narrow and it is not possible to completely remove the hanging, and when it exceeds 120 °, the falling range in the circumferential direction of the granular material forming the hanging is not continuous, This is because the hanging cannot be completely removed.
【００１７】[0017]
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて以下に説明する。図１は、本発明の方法を説明する
ブロック図、図２は、本発明の方法に係るエアブラスタ
を取り付けたホッパーの破断斜視図である。１は粉粒体
２を貯留する上部ホッパー、３は上部ホッパー１の下に
設けられた下部ホッパー、４はベルトフィーダである。
ベルトフィーダ４には、定量切り出し装置５が設けられ
ており、定量切り出し装置５は、ベルトフィーダ４上の
粉粒体の重量を測定し、この重量とベルトフィーダのベ
ルト速度から粉粒体の切り出し量を演算し、切り出し量
が設定値になるようにベルトフィーダ４の駆動モータ６
を介してベルトフィーダ４のベルト速度を制御するもの
である。図３は、一定量の高圧空気を一気に噴出させる
エアブラスタの説明図である。エアブラスタ１０は、一
定量の高圧空気（例；４ｋｇｆ／ｃｍ2 ×４０リッタ
ー）を蓄圧するタンク１１、タンク１１に高圧空気を蓄
圧したり、蓄圧された高圧空気を排出するための開閉弁
１２、この開閉弁の開閉を制御する２ポート電磁切換弁
１３および高圧空気を噴射する導出管１４から構成され
ている。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining the method of the present invention, and FIG. 2 is a cutaway perspective view of a hopper to which an air blaster according to the method of the present invention is attached. Reference numeral 1 is an upper hopper for storing the powder and granules 2, 3 is a lower hopper provided below the upper hopper 1, and 4 is a belt feeder.
The belt feeder 4 is provided with a quantitative cutting device 5, and the quantitative cutting device 5 measures the weight of the powder particles on the belt feeder 4 and cuts the powder particles from this weight and the belt speed of the belt feeder. The drive motor 6 of the belt feeder 4 calculates the amount and adjusts the cutout amount to the set value.
The belt speed of the belt feeder 4 is controlled via the. FIG. 3 is an explanatory diagram of an air blaster that blows out a fixed amount of high-pressure air at once. The air blaster 10 includes a tank 11 for accumulating a certain amount of high pressure air (eg, 4 kgf / cm 2 × 40 liters), an on-off valve 12 for accumulating high pressure air in the tank 11 and discharging the accumulated high pressure air, It is composed of a two-port electromagnetic switching valve 13 for controlling the opening / closing of the on-off valve and a discharge pipe 14 for injecting high pressure air.
【００１８】そして、高圧空気が、高圧空気源１７から
配管および配管の途中に設けられた弁１６、逆止弁１５
を介してタンク１１に供給され、蓄圧される。一方、制
御器７から開信号が２ポート電磁弁１３に送信される
と、２ポート電磁弁１３は開閉弁１２を開き、タンク１
１の高圧空気が導出管から噴出される。噴出が終わると
２ポート電磁弁は開閉弁１２を閉じ、タンク１１に再び
高圧空気が蓄圧される。The high-pressure air is supplied from the high-pressure air source 17 to a pipe, a valve 16 provided in the middle of the pipe, and a check valve 15.
It is supplied to the tank 11 via and is accumulated in pressure. On the other hand, when an open signal is sent from the controller 7 to the 2-port solenoid valve 13, the 2-port solenoid valve 13 opens the open / close valve 12, and the tank 1
High-pressure air of No. 1 is ejected from the outlet pipe. When the ejection is completed, the 2-port solenoid valve closes the on-off valve 12, and high pressure air is accumulated in the tank 11 again.
【００１９】本発明を実施するために、上記のホッパー
設備において、棚吊りが発生する下部ホッパー３の内部
側壁近傍に、２本の高圧空気を噴出する導出管１４ａ，
１４ｂを、上下方向に一定の間隔空け、且つホッパーの
円周方向においてなす角度が７０°〜１２０°になるよ
うに設けている。導出管１４ａ、１４ｂに接続するエア
ブラスタ１０ａ、１０ｂの他の機器は、下部ホッパー３
の外側の設けられ、エアブラスタ１０ａ、１０ｂには、
高圧空気源から高圧空気が供給されるようになってい
る。なお、２本の導出管で棚吊り除去できない大きな容
量のホッパーの場合は、高圧気体を噴出する３本以上の
導出管を、上下方向に一定の間隔空け、且つホッパーの
円周方向において隣合う導出管のなす角度が７０°〜１
２０°になるように設ける。In order to carry out the present invention, in the above-mentioned hopper equipment, two outlet pipes 14a for ejecting two high-pressure air near the inner side wall of the lower hopper 3 in which hanging is generated.
14b are provided at regular intervals in the vertical direction, and the angle formed in the circumferential direction of the hopper is 70 ° to 120 °. Other devices of the air blasters 10a, 10b connected to the outlet pipes 14a, 14b are the lower hopper 3
Is provided on the outside of the air blasters 10a and 10b,
High pressure air is supplied from a high pressure air source. In the case of a large capacity hopper that cannot be removed by hanging with two lead-out tubes, three or more lead-out tubes that eject high-pressure gas are vertically spaced at regular intervals and are adjacent to each other in the circumferential direction of the hopper. The angle formed by the outlet pipe is 70 ° to 1
It is provided so that it becomes 20 °.
【００２０】本発明方法は、次のように実施される。 （１）ベルトフィーダで粉粒体を切り出ししている間、
ベルトフィーダ４の負荷率（（ベルトフィーダ上の粉粒
体実重量／ベルトフィーダ上の目標重量）×１００％）
が、定量切り出し装置５から制御器７に送信されてい
る。 （２）制御器７には、ホッパーの棚吊り発生を判別する
ための負荷率の下限値が入力されており、制御器７は、
送信されてくる負荷率が下限値以下になったとき、エア
ブラスタ１０ａ、１０ｂに開閉弁１２の開信号を送る。 （３）エアブラスタ１０ａ、１０ｂの開閉弁が開とな
り、一定量の高圧空気が噴出され、棚吊りが除去され
る。 （４）エアブラスタ１０ａ、１０ｂの開閉弁が、閉とな
りタンク１１に一定量の高圧空気が蓄圧される。 （５）（１）に戻る。The method of the present invention is carried out as follows. (1) While cutting powder and granules with a belt feeder,
Load factor of belt feeder 4 ((actual weight of powder / grain on belt feeder / target weight on belt feeder) x 100%)
Is transmitted from the quantitative cutout device 5 to the controller 7. (2) The lower limit value of the load factor for determining the occurrence of the hanging of the hopper is input to the controller 7, and the controller 7
When the transmitted load factor becomes equal to or lower than the lower limit value, an open signal of the open / close valve 12 is sent to the air blasters 10a and 10b. (3) The open / close valves of the air blasters 10a and 10b are opened, and a certain amount of high pressure air is ejected to remove the hanging from the rack. (4) The open / close valves of the air blasters 10a and 10b are closed, and a certain amount of high pressure air is accumulated in the tank 11. (5) Return to (1).
【００２１】[0021]
「実施例」粉鉄鉱石を貯鉱する容量４００ｍ3 、貯鉱量
８００ｔ、高さ２０ｍ、上部口径４．０ｍ、下部口径
１．１ｍの偏心２段ホッパーがある。このホッパーのベ
ルトフィーダは、定量切り出し装置を備えている。この
ホッパーに棚吊り除去装置として、図２〜図４に示すよ
に、４ｋｇｆ／ｃｍ2 の空気を４０リッター蓄圧し、一
気に噴出させるエアブラスタ２個１０ａ、１０ｂを、そ
れぞれ、下部ホッパー下面より上方の６００ｍｍ、１２
００ｍｍの位置に、噴出口の口径が５０ｍｍの空気導出
管１４ａ、１４ｂをホッパー内壁に沿って噴出口が下向
きになるように取り付け、且つホッパー円周方向おける
空気導出管１４ａ、１４ｂのなす角度が９０°になるよ
うに配置した。そして、ベルトフィーダの負荷率が５０
％以下になったとき、エアブラスタ１０ａ、１０ｂから
高圧空気を噴出させるようにした。[Example] There is an eccentric two-stage hopper having a capacity of 400 m 3 for storing fine iron ore, a storage amount of 800 t, a height of 20 m, an upper diameter of 4.0 m, and a lower diameter of 1.1 m. The belt feeder of this hopper is equipped with a quantitative cutting device. As shown in FIGS. 2 to 4, two air blasters 10a and 10b for accumulating 40 liters of air of 4 kgf / cm 2 and ejecting them all at once are installed on the hopper as shelving removers above the lower hopper. 600 mm, 12
At the position of 00 mm, the air outlet pipes 14a and 14b having a diameter of 50 mm are attached so that the outlet faces downward along the inner wall of the hopper, and the angle formed by the air outlet pipes 14a and 14b in the circumferential direction of the hopper is made. It was placed at 90 °. And the load factor of the belt feeder is 50
When it becomes less than or equal to%, the high pressure air is ejected from the air blasters 10a and 10b.
【００２２】昼夜の連続運転で１５日間操業を行い、棚
吊りの除去効果を調査した。棚吊り発生回数は、１日平
均で２．５回あった。このときの粉鉱石水分の平均値
は、６．２％であり、粉鉱石水分が８．０％を越えた日
は、最高１５回棚吊りが発生した。しかし、本発明方法
の実施により、棚吊りは全て解消され、誤配合、原料切
れによる操業停止のトラブルは皆無であった。A continuous operation day and night was carried out for 15 days to investigate the effect of removing the hanging. The number of times of hangings was 2.5 times on average on a daily basis. The average value of the water content of the fine ore at this time was 6.2%, and on the day when the water content of the fine ore exceeded 8.0%, hanging was carried out up to 15 times. However, by carrying out the method of the present invention, all the hanging of the rack was eliminated, and there was no trouble of operation stop due to erroneous blending or running out of raw materials.
【００２３】「比較例１」実施例と同じホッパーで、下
部ホッパー下面より上方６００ｍｍの位置に取り付けた
エアブラスタ１個のみ運転した。棚吊り発生回数は、実
施例と同様１日平均で、２．５回あった。そのうち、
１．５回は棚吊り除去がなされた（除去率；６０％）。"Comparative Example 1" In the same hopper as that of the embodiment, only one air blaster mounted 600 mm above the lower hopper lower surface was operated. The number of times of hangings was 2.5 times per day on average as in the example. Of which
It was suspended and removed 1.5 times (removal rate; 60%).
【００２４】「比較例２」実施例と同じホッパーで、ホ
ッパー下面より１２００ｍｍの位置に取り付けたエアブ
ラスタ１個のみを運転した。棚吊り発生回数は、実施例
と同様１日平均で、２．５回あった。この場合、棚吊り
除去は１．３回（除去率；５０％）で、除去率は比較例
１より低くなった。"Comparative Example 2" In the same hopper as in the example, only one air blaster installed at a position 1200 mm below the lower surface of the hopper was operated. The number of times of hangings was 2.5 times per day on average as in the example. In this case, the removal by hanging was 1.3 times (removal rate; 50%), and the removal rate was lower than that in Comparative Example 1.
【００２５】「比較例３」実施例と同じホッパーで、図
５に示すように、空気導出管１４ａ、１４ｂのなす角度
のみを６０°に変えてエアブラスタを運転した。この場
合は、棚吊り除去率は、８５％であった。"Comparative Example 3" Using the same hopper as in the example, the air blaster was operated by changing only the angle formed by the air outlet pipes 14a and 14b to 60 ° as shown in FIG. In this case, the hanging removal rate was 85%.
【００２６】「比較例４」実施例と同じホッパーで、空
気導出管１４ａ、１４ｂのなす角度のみを１３０°に変
えてエアブラスタを運転した。この場合は、棚吊り除去
率は、６０％であり、「比較例１」と同じであった。"Comparative Example 4" The air blaster was operated with the same hopper as in the example, except that the angle formed by the air outlet pipes 14a and 14b was changed to 130 °. In this case, the hanging removal rate was 60%, which was the same as in "Comparative Example 1".
【００２７】[0027]
【発明の効果】本発明によれば、ホッパーの棚吊りを確
実に除去できるから、棚吊りによって生じる誤配合や操
業の中断のトラブルを回避することができる。また、設
備費も安価となる。As described above, according to the present invention, the hanging of the hopper can be surely removed, so that the trouble of mis-mixing and the interruption of the operation caused by the hanging can be avoided. In addition, equipment costs will be low.
【図１】本発明方法を説明するブロック図である。FIG. 1 is a block diagram illustrating a method of the present invention.
【図２】本発明に係るエアブラスタを取り付けたホッパ
ーの破断斜視図である。FIG. 2 is a cutaway perspective view of a hopper to which an air blaster according to the present invention is attached.
【図３】本発明に係るエアブラスタの説明図である。FIG. 3 is an explanatory diagram of an air blaster according to the present invention.
【図４】本発明の導出管の配置の１例を示す平面図であ
る。FIG. 4 is a plan view showing an example of the arrangement of the outlet pipe of the present invention.
【図５】比較例の導出管の配置の１例を示す平面図であ
る。FIG. 5 is a plan view showing an example of an arrangement of outlet pipes of a comparative example.
１ 上部ホッパー ２ 粉粒体 ３ 下部ホッパー ４ ベルトフィーダ ５ 定量切り出し装置 ７ 制御器 １０，１０ａ，１０ｂ エアブラスタ １４，１４ａ，１４ｂ 導出管 1 Upper hopper 2 Granules 3 Lower hopper 4 Belt feeder 5 Quantitative cutting device 7 Controller 10, 10a, 10b Air blaster 14, 14a, 14b Outlet pipe
Claims (1)
傍に高圧気体を噴出する二本の導出管を、上下方向に一
定間隔を有し且つ、ホッパー円周方向において隣合う導
出管のなす角度が７０°〜１２０°となるように設け、
粉粒体を定量切り出しするベルトフィーダの負荷率が下
限値以下になったとき、前記複数本の導出管から高圧気
体を一気に吹き出し、棚吊りを除去することを特徴とす
る粉粒体ホッパーの棚吊り除去方法。1. Two lead-out pipes for ejecting high-pressure gas in the vicinity of an inner side wall of a powdery or granular hopper which is suspended from the lead-out pipes which are vertically spaced apart from each other and which are adjacent to each other in the circumferential direction of the hopper. Provided so that the angle is 70 ° to 120 °,
When the load factor of the belt feeder for quantitatively cutting out the granular material becomes lower than or equal to the lower limit value, high-pressure gas is blown out from the plurality of outlet pipes at once, and the hanging of the granular material hopper is characterized by being removed. Hanging removal method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8093946A JPH09286488A (en) | 1996-04-16 | 1996-04-16 | Elimination of bridging in powder/granule hopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8093946A JPH09286488A (en) | 1996-04-16 | 1996-04-16 | Elimination of bridging in powder/granule hopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09286488A true JPH09286488A (en) | 1997-11-04 |
Family
ID=14096612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8093946A Pending JPH09286488A (en) | 1996-04-16 | 1996-04-16 | Elimination of bridging in powder/granule hopper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09286488A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100928778B1 (en) * | 2002-10-08 | 2009-11-25 | 주식회사 포스코 | Device to prevent tripping of tripper cars in raw material storage bin |
| JP2011190017A (en) * | 2010-03-12 | 2011-09-29 | Ube Industries Ltd | Powder carrying device |
| JP2012057339A (en) * | 2010-09-08 | 2012-03-22 | Nikko Co Ltd | Hopper for aggregate storage and arching removal method therefor |
| JP2020175976A (en) * | 2019-04-17 | 2020-10-29 | 三久股ふん有限公司 | Storing instrument for eliminating bridging |
-
1996
- 1996-04-16 JP JP8093946A patent/JPH09286488A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100928778B1 (en) * | 2002-10-08 | 2009-11-25 | 주식회사 포스코 | Device to prevent tripping of tripper cars in raw material storage bin |
| JP2011190017A (en) * | 2010-03-12 | 2011-09-29 | Ube Industries Ltd | Powder carrying device |
| JP2012057339A (en) * | 2010-09-08 | 2012-03-22 | Nikko Co Ltd | Hopper for aggregate storage and arching removal method therefor |
| JP2020175976A (en) * | 2019-04-17 | 2020-10-29 | 三久股ふん有限公司 | Storing instrument for eliminating bridging |
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