JP3341720B2 - Method and apparatus for airflow transport of granular material - Google Patents
Method and apparatus for airflow transport of granular materialInfo
- Publication number
- JP3341720B2 JP3341720B2 JP19411699A JP19411699A JP3341720B2 JP 3341720 B2 JP3341720 B2 JP 3341720B2 JP 19411699 A JP19411699 A JP 19411699A JP 19411699 A JP19411699 A JP 19411699A JP 3341720 B2 JP3341720 B2 JP 3341720B2
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- Japan
- Prior art keywords
- transport
- granular material
- powder
- flow
- air
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- 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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- Air Transport Of Granular Materials (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、微粉炭、廃プラス
チック等の粉粒体を、搬送経路の途中に設けた分配器に
より複数の搬送経路に分配して搬送する粉粒体の気流搬
送方法及び装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pneumatic conveying method for powdery or granular material in which powdery or granular material such as pulverized coal or waste plastic is distributed and transported to a plurality of transport paths by a distributor provided in the middle of the transport path. And an apparatus.
【０００２】[0002]
【従来の技術】粉粒体を複数の供給先に気流搬送する気
流搬送装置としては、例えば微粉炭、廃プラスチック等
の高炉の燃料、或いは調整剤(酸化鉄,還元剤等）を高炉
の羽口から吹き込むものが知られている。この種の気流
搬送装置としては、例えば図６に示す特開平６−１１５
６９１号公報に開示された粉体流量分配制御方法に使用
する装置がある。2. Description of the Related Art As an air flow transfer device for transferring a granular material to a plurality of supply destinations, for example, blast furnace fuel such as pulverized coal, waste plastic, etc. The thing which inhales from the mouth is known. As this type of air flow transfer device, for example, Japanese Patent Application Laid-Open No. 6-115 shown in FIG.
There is an apparatus used in the powder flow distribution control method disclosed in Japanese Patent No. 691.
【０００３】図６に基づいて従来技術の構成・作用を概
説すると、同公報に開示された装置は、粉体を容れた圧
力容器２１、粉体搬送用の配管に設けられた分岐部２
２、粉体の流量を検知する差圧式粉体流量計２３ａ〜２
３ｃ、粉体用バルブ２４ａ〜２４ｃ、差圧式粉体流量計
２３ａ〜２３ｃの信号を受けて、その値と、予め定めた
設定流量との差が零になるように粉体用バルブ２４ａ〜
２４ｃの開度を調節する粉体流量指示調節計２５ａ〜２
５ｃ（２５ｃは図示なし。）とを備えている。[0003] The configuration and operation of the prior art will be briefly described with reference to FIG. 6. The apparatus disclosed in the publication is composed of a pressure vessel 21 containing powder, a branch portion 2 provided in a pipe for conveying powder.
2. Differential pressure type powder flow meter 23a-2 for detecting powder flow rate
3c, the powder valves 24a to 24c, and the powder valves 24a to 24c, which receive signals from the differential pressure type powder flow meters 23a to 23c so that the difference between the value and a predetermined set flow rate becomes zero.
Powder flow controller 25a-2 for adjusting the opening degree of 24c
5c (25c is not shown).
【０００４】上記のように構成された装置においては、
各供給先Ａ，Ｂ，Ｃへの粉体の分配量を予め各分岐配管
２６ａ〜２６ｃに取り付けた粉体流量指示調節計２５ａ
〜２５ｃで設定しておき、圧力容器２１から粉体を切り
出し、キャリヤガス（空気）により各供給先Ａ，Ｂ，Ｃ
へ搬送する。そして、各供給先Ａ，Ｂ，Ｃへ搬送される
粉体の流量は差圧式粉体流量計２３ａ〜２３ｃで検知さ
れ、粉体流量指示調節計２５ａ〜２５ｃは差圧式粉体流
量計２３ａ〜２３ｃの信号を入力して、その値を指示す
るとともに、各分岐配管２６ａ〜２６ｃについて予め定
めた設定流量との差が零になるように粉体用バルブ２４
ａ〜２４ｃの開度を調節する。このようなフィードバッ
ク制御を各分岐配管毎に行い、各分岐配管２６ａ〜２６
ｃにおける粉体流量を高精度で制御して各供給先へ搬送
する。[0004] In the device configured as described above,
The amount of powder to be distributed to each of the supply destinations A, B, and C is determined in advance by a powder flow rate controller 25a attached to each of the branch pipes 26a to 26c.
To 25c, powder is cut out from the pressure vessel 21 and supplied to each of the destinations A, B, and C by a carrier gas (air).
Transport to The flow rates of the powder conveyed to the respective destinations A, B, and C are detected by the differential pressure type powder flow meters 23a to 23c, and the powder flow rate controllers 25a to 25c are detected by the differential pressure type powder flow meters 23a to 23c. 23c is input to indicate the value, and the powder valve 24 is set so that the difference between the predetermined flow rate and the predetermined flow rate for each of the branch pipes 26a to 26c becomes zero.
The opening degree of a to 24c is adjusted. Such feedback control is performed for each branch pipe, and each branch pipe 26a to 26
The powder flow rate in c is controlled with high precision and the powder is conveyed to each supply destination.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ように構成された従来技術には次のような問題点があ
る。まず第一に、各分岐管への流量の調整を粉体用バル
ブ２４ａ〜２４ｃの開度調節で行っているので、粉体用
バルブ２４ａ〜２４ｃに粉体が付着しやすく、付着した
場合には所定の分配割合が得られず、また配管の閉塞を
生ずる恐れもある。また、摩耗により、粉体用バルブ２
４ａ〜２４ｃの耐久性も低い。However, the prior art configured as described above has the following problems. First, since the flow rate to each branch pipe is adjusted by adjusting the opening of the powder valves 24a to 24c, the powder easily adheres to the powder valves 24a to 24c. Does not provide a predetermined distribution ratio, and may cause clogging of piping. Also, due to wear, the powder valve 2
The durability of 4a to 24c is also low.
【０００６】このような、粉体用バルブ２４ａ〜２４ｃ
の開度調節による流量調整の問題点を解決するものとし
て、例えば特開昭５９−３６０２６号公報に開示された
気送粉体の分配制御装置がある。図７、図８はこの気送
粉体の分配制御装置の説明図である。この装置は、本管
３１の先端部に同一形状の複数個の分岐管３２ａ〜３２
ｄを本管中心軸の一点を原点として中心軸から同一角度
でかつ分岐管３２ａ〜３２ｄの間隔を同一として取り付
けるとともに、上記中心軸に対して各分岐管３２ａ〜３
２ｄと対称的な位置に分配制御用ガス吹込管３３ａ〜３
３ｄを取り付けたものである。そして、例えば、分岐管
３２ａへの粉体搬送量を多くするには、吹込管３３ａか
らガス噴出量を減少させるか、又は吹込管３３ｃからの
ガス噴出量を増加させるようにするというものである。
しかしながら、同公報の装置の場合には、搬送量を増加
させたい側の分岐管にエアーを流れ方向に噴射し、ガス
流速を増大させて搬送量の増加を図るという方法である
が、この方法では分配の制御割合があまり大きくなく、
必ずしも十分な分配制御を行うことはできない。[0006] Such powder valves 24a to 24c
In order to solve the problem of flow rate adjustment by adjusting the opening degree, there is, for example, a pneumatic powder distribution control apparatus disclosed in Japanese Patent Application Laid-Open No. 59-36026. FIG. 7 and FIG. 8 are explanatory diagrams of the pneumatic powder distribution control device. This device includes a plurality of branch pipes 32a to 32
d is attached at the same angle from the central axis with the point of the central axis of the main pipe as the origin and with the same interval between the branch pipes 32a to 32d.
Distribution control gas blow-in pipes 33a to 3d at positions symmetrical to 2d
3d is attached. For example, in order to increase the amount of powder conveyed to the branch pipe 32a, the amount of gas ejected from the blowing pipe 33a is reduced or the amount of gas ejected from the blowing pipe 33c is increased. .
However, in the case of the apparatus disclosed in the publication, air is injected in the flow direction to the branch pipe on the side where the transport amount is to be increased, and the gas flow velocity is increased to increase the transport amount. So the distribution control ratio is not very large,
It is not always possible to perform sufficient distribution control.
【０００７】第二に、図６に示したものにおいては、供
給先の都合等により粉粒体の搬送を一時的に停止した場
合に、搬送を停止した分岐管が粉粒体により閉塞すると
いう問題がある。この点を具体的に説明すると、例えば
供給先Ｃの都合により、分岐管２６ｃからの粉粒体の供
給を停止する必要が生じた場合には、粉体用バルブ２４
ｃを閉じておくことになる。この場合、粉粒体が分岐管
２６ｃにおける粉体用バルブ２４ｃの上流側に徐々に溜
まり、分岐管２６ｃを閉塞してしまい、粉体用バルブ２
４ｃを開放して搬送を再開しようとしても、閉塞のため
搬送ができないという恐れがある。Secondly, in the apparatus shown in FIG. 6, when the transportation of the granular material is temporarily stopped due to a supply destination or the like, the branch pipe which stopped the transportation is closed by the granular material. There's a problem. This point will be specifically described. For example, when it is necessary to stop the supply of the powder and granular material from the branch pipe 26c due to the supply destination C, the powder valve 24 may be used.
c will be closed. In this case, the granular material gradually accumulates on the upstream side of the powder valve 24c in the branch pipe 26c and closes the branch pipe 26c.
Even if the user attempts to open 4c and resume transport, there is a possibility that the transport will not be possible due to blockage.
【０００８】また、長時間に亘って粉体用バルブ２４ｃ
を閉じていた場合には、粉粒体が分岐部２２まで堆積し
て、分岐部２２の閉塞をおこし、他の分岐管への搬送に
弊害を生じさせる危険もある。このような問題の対処方
法として、粉体搬送が不要である場合にもすべての分岐
配管で粉粒体を常時流しておくことが考えられるが、供
給先の条件や配管詰り等の配管トラブルにより粉粒体の
供給をどうしてもストップせざるを得ない場合があり、
上記問題を解決する方法としては不十分である。Further, the powder valve 24c is used for a long time.
Is closed, the granular material accumulates up to the branch portion 22 to cause the blockage of the branch portion 22, and there is a danger that the transportation to another branch pipe may be adversely affected. As a countermeasure for such a problem, it is conceivable to always allow the powder to flow in all branch pipes even when powder transport is unnecessary.However, due to pipe conditions such as supply destination conditions and pipe clogging, In some cases, the supply of powdered granules must be stopped,
It is not enough to solve the above problem.
【０００９】本発明はかかる問題点を解決するためにな
されたものであり、搬送経路の途中に設けた分配器によ
り粉粒体を複数の搬送経路に分配して搬送する粉粒体の
気流搬送方法において、分配制御を確実に行い、また搬
送経路の閉塞を生ずることのない粉粒体の気流搬送方法
及び装置を得ることを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and the present invention has been made to solve the above-mentioned problem. It is an object of the present invention to provide a method and an apparatus for carrying a pneumatic material by air flow, which can surely control the distribution and do not block the carrying path.
【００１０】[0010]
【課題を解決するための手段】本発明に係る粉粒体の気
流搬送方法は、搬送経路の途中に設けた分配器により粉
粒体を複数の搬送経路に分配して搬送するものにおい
て、前記分配器の下流側の搬送経路に、流れに対して抵
抗となるように気体を吹き込み、各搬送経路に流れる粉
粒体の流量バランスを調整するようにしたことを特徴と
するものである。According to the present invention, there is provided a pneumatic conveying method for powdery and granular materials, wherein the powdery and granular material is distributed to a plurality of transporting paths by a distributor provided in the middle of the transporting path and transported. A gas is blown into the transport path on the downstream side of the distributor so as to resist the flow, so that the flow rate balance of the powder and the granular material flowing in each transport path is adjusted.
【００１１】また、搬送経路の途中に設けた分配器によ
り粉粒体を複数の搬送経路に分配して搬送するものにお
いて、前記分配器の下流側の搬送経路が遮断されて搬送
が停止されたときに、該搬送停止中の搬送経路に気体を
吹き込み、該搬送停止中の経路内の粉粒体を流動化させ
て、搬送経路の閉塞を防止するようにしたことを特徴と
するものである。[0011] Further, in the apparatus for distributing and transporting the granular material to a plurality of transport paths by a distributor provided in the middle of the transport path, the transport path on the downstream side of the distributor is cut off and transported.
Is stopped, a gas is supplied to the transport path during which the transport is stopped.
The method is characterized in that blowing and fluidization of the granular material in the path during which the conveyance is stopped is performed to prevent the conveyance path from being blocked.
【００１２】また、本発明に係る粉粒体の気流搬送装置
は、粉粒体を上流側から下流側に気流搬送するものにお
いて、搬送経路の途中に設けられ、粉粒体の流量を複数
の搬送経路に分配する分配装置と、前記複数の搬送経路
に設けられ、流れに対して抵抗する向きに気体を吹き込
むノズルとを備えたことを特徴とするものである。[0012] Further, the air / granule transport device for powdery or granular material according to the present invention is provided in the middle of a transport path for transporting a powdery or granular material from an upstream side to a downstream side, and the flow rate of the granular material is controlled by a plurality of units. A distribution device for distributing to a transport path, and a nozzle that is provided in the plurality of transport paths and blows gas in a direction that resists the flow is provided.
【００１３】また、粉粒体を上流側から下流側に気流搬
送するものにおいて、搬送経路の途中に設けられ、粉粒
体の流量を複数の搬送経路に分配する分配装置と、前記
複数の搬送経路のそれぞれに設けられた開閉弁と、該開
閉弁と前記分配器との間に設けられて前記複数の搬送経
路において流れに対して抵抗する向きに気体を吹き込む
ノズルとを設けたことを特徴とするものである。[0013] Further, in the apparatus for conveying a powdery material by airflow from an upstream side to a downstream side, a distribution device provided in the middle of a transporting path for distributing the flow rate of the particulates to a plurality of transporting paths; An on-off valve provided in each of the paths, and the plurality of transport passages provided between the on-off valve and the distributor.
A nozzle for blowing gas in a direction that resists the flow in the path .
【００１４】[0014]
【００１５】また、前記ノズルの気体吹き込み方向は、
その方向の軸線と吹き込み地点よりも下流側の配送経路
の軸線の成す角度が９０度以内になるように設定されて
いることを特徴とするものである。The gas blowing direction of the nozzle is as follows:
The angle between the axis in that direction and the axis of the delivery route downstream of the blowing point is set to be within 90 degrees.
【００１６】[0016]
【発明の実施の形態】実施の形態１．図１は本発明の実
施の形態１の説明図であり、高炉操業において原燃料と
なる廃プラスチックを羽口から吹き込む装置に適用した
例である。高炉羽口は炉体円周状に配置されることか
ら、吹込み配管長は正面羽口と向正面羽口とで異なる。
従って、吹込配管長の差により管内圧損が異なるため、
分配器で均等分配したのみではそれぞれの配管の吹込量
に差が生ずることになる。そこで、本実施の形態におい
ては、分配器の下流側に抵抗となる空気を吹き込み、各
吹込み配管に流れる廃プラスチックの流量が均等になる
よう調整したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is an explanatory view of Embodiment 1 of the present invention, and is an example in which waste plastics serving as raw fuel are blown from tuyeres in a blast furnace operation. Since the blast furnace tuyeres are arranged in a furnace body circumference, the length of the blowing pipe is different between the front tuyeres and the front tuyeres.
Therefore, since the pressure loss in the pipe is different due to the difference in the length of the blowing pipe,
Only the equal distribution by the distributor causes a difference in the blowing amount of each pipe. Therefore, in the present embodiment, resistance air is blown into the downstream side of the distributor, and the flow rate of the waste plastic flowing through each blowing pipe is adjusted to be equal.
【００１７】以下、図１に基づいて具体的に説明する。
１は吹き込み材である廃プラスチックを貯留すると共
に、一定量を切り出す吹込タンク、２は搬送経路を構成
すると共に吹込タンク１が接続された搬送管、３は搬送
経路の途中にて搬送経路を分岐して被搬送材を分配する
分配器、４，５はそれぞれ分配器３に接続された第１，
２分岐管、６，７はそれぞれ第１，２分岐管４，５に設
置された開閉弁、８，９はそれぞれ第１，２分岐管４，
５の先端側に接続された吹込ランスである。Hereinafter, a specific description will be given with reference to FIG.
1 is a blow tank for storing waste plastic as a blowing material and cutting out a predetermined amount, 2 is a transfer pipe constituting a transfer path and connected to the blow tank 1, and 3 is a branch of the transfer path in the middle of the transfer path. And distributors 4 and 5 for distributing the conveyed material by the first and the first connected to the distributor 3, respectively.
Two branch pipes, 6, 7 are on-off valves installed in the first and second branch pipes 4, 5, respectively, and 8, 9 are first and second branch pipes 4, 4, respectively.
5 is a blowing lance connected to the tip end side of FIG.
【００１８】１０，１１はそれぞれ第１，２分岐管４，
５における分配器３の近傍に設置した調整エアー用のノ
ズルである。ノズル１０，１１は、流れに対して抵抗と
なる向きにエアーを噴射できるように設置されている。
この流れに対して抵抗となる方向の例としては、エアー
噴射方向の軸線と噴射地点よりも下流側の分岐管４，５
の軸線とが成す角度が９０度以内の場合がある。図２に
分岐部３の一部断面を含む側面図を示す。図２に示すよ
うに、分岐部３管路面積の急激な変化がないように、内
径を分岐前φ４９．５mm、分岐後φ３８mm２本として、
分岐前後の搬送配管の断面積をほぼ等しくした。Reference numerals 10 and 11 denote first and second branch pipes 4 and 4, respectively.
5 is a nozzle for adjusting air installed near the distributor 3 in FIG. The nozzles 10 and 11 are installed so that air can be jetted in a direction that is resistant to the flow.
As an example of the direction which becomes a resistance to this flow, the branch line 4, 5 on the downstream side of the axis of the air injection direction and the injection point is used.
May be within 90 degrees. FIG. 2 shows a side view including a partial cross section of the branch portion 3. As shown in FIG. 2, the inner diameter is set to φ49.5 mm before branching and φ38 mm2 after branching so that there is no sudden change in the area of the pipeline in the branching section 3.
The cross-sectional area of the transfer pipe before and after the branch was made almost equal.
【００１９】以上のように構成された本実施の形態の作
用を説明する。上述したように、第１，２分岐管４，５
の長さが異なることによる配管抵抗の差、あるいは、分
配器３の製作誤差等により、第１，２分岐管４，５に分
配される廃プラスチックの量に差が生ずる。そこで、ノ
ズル１０，１１から搬送流に抵抗となる方向に調整用エ
アーを噴射することによって、調整用エアーを噴射した
ときに流れる粉粒体の流量をエアーを噴射しない場合よ
りも少なくし、結果として調整用エアーを噴射しないあ
るいは噴射量の少ない分岐管に流れる粉粒体の流量を多
くし、両者の流量が等しくなるように調整するものであ
る。The operation of the present embodiment configured as described above will be described. As described above, the first and second branch pipes 4, 5
Due to a difference in pipe resistance due to a difference in length, or a manufacturing error of the distributor 3, a difference occurs in the amount of waste plastic distributed to the first and second branch pipes 4, 5. Therefore, by injecting the adjusting air from the nozzles 10 and 11 in a direction that is resistant to the transport flow, the flow rate of the granular material flowing when the adjusting air is injected is reduced as compared with a case where the air is not injected. In this method, the flow rate of the granular material that does not spray the adjusting air or flows into the branch pipe with a small spray amount is increased so that the flow rates of the two become equal.
【００２０】実際の制御に際しては、各分岐管４，５に
粉流体流量検出装置を設け、該粉流体流量検出装置の検
出結果に基づいて、ノズル１０，１１から噴射する空気
量を調整するようにする。In actual control, a powder fluid flow rate detecting device is provided in each of the branch pipes 4 and 5, and the amount of air injected from the nozzles 10 and 11 is adjusted based on the detection result of the powder fluid flow rate detecting device. To
【００２１】次に、上記装置により実際に粉粒体の流量
調整を行った実験例を示す。図３は、図１における分岐
部の部分の拡大図である。図３に示すように、本実験に
おいては、第１，２分岐管４，５に噴射する調整用エア
ー量をそれぞれＷ1，Ｗ2Nm3/h、第１，２分岐管４，５
の廃プラスチックの流量をそれぞれＦＷ1，ＦＷ2kg/hで
表している。Next, an experimental example in which the flow rate of the granular material is actually adjusted by the above-described apparatus will be described. FIG. 3 is an enlarged view of a branch portion in FIG. As shown in FIG. 3, in this experiment, the adjusting air amounts injected into the first and second branch pipes 4 and 5 were W 1 and W 2 Nm 3 / h, respectively, and the first and second branch pipes 4 and 5 were used.
Are represented by FW 1 and FW 2 kg / h, respectively.
【００２２】図４は実験結果を示すグラフであり、縦軸
が廃プラスチックの流量（kg/h）を示し、横軸が第１，
２分岐管４，５に噴射する調整用エアー量の差（Ｗ2−
Ｗ1）Nm3/hを示している。そして、破線が第１分岐管４
の流量示し、実線が第２分岐管５の流量を示している。FIG. 4 is a graph showing the results of the experiment, in which the vertical axis indicates the flow rate (kg / h) of the waste plastic, and the horizontal axis indicates the first and the first.
The difference in the amount of adjustment air injected into the two branch pipes 4 and 5 (W 2 −
W 1 ) Nm 3 / h. A broken line indicates the first branch pipe 4
, And the solid line indicates the flow rate of the second branch pipe 5.
【００２３】図４から分かるように、調整用エアー量の
差がゼロの場合（例えば、Ｗ1，Ｗ2が共にゼロの場合）
には、第１，２分岐管４，５の廃プラスチックの流量の
差は約５５kg/hあるが、第１分岐管４に噴射する調整用
エアー量を増やして第１，２分岐管４，５に噴射する調
整用エアー量の差を約１５Nm3/hにすることで、第１，
２分岐管４，５の流量は共に約４４０kg/hとなり、一致
させることができる。また、図４に示すように、調整用
エアーの吹込みによって各分岐管の流量を広範囲に制御
可能であることが分かる。As can be seen from FIG. 4, when the difference between the adjusting air amounts is zero (for example, when both W 1 and W 2 are zero).
The difference between the flow rates of the waste plastics of the first and second branch pipes 4 and 5 is about 55 kg / h, but the amount of air for adjustment injected into the first branch pipe 4 is increased to increase the amount of waste plastic. By making the difference in the amount of air for adjustment injected to 5 about 15 Nm 3 / h,
The flow rates of the two branch pipes 4 and 5 are both about 440 kg / h, which can be matched. Further, as shown in FIG. 4, it can be seen that the flow rate of each branch pipe can be controlled in a wide range by blowing the adjustment air.
【００２４】このように、本実施の形態によれば、極め
て簡単な手段により、配管の閉塞を生ずることなく、粉
粒体の分配制御を広い範囲で確実に行うことができる。As described above, according to the present embodiment, the distribution control of the granular material can be reliably performed in a wide range by using extremely simple means without blocking the pipe.
【００２５】なお、上記の実施の形態においては、第
１，２分岐管４，５の両方にノズル１０，１１を設ける
例を示したが、分配器３で２つの搬送経路に分岐する場
合には、例えば配管抵抗が小さく無調整の場合に搬送量
が多くなる２ヶ所の分岐管に調整エアー用ノズルを設け
るようにしてもよい。In the above-described embodiment, an example has been described in which the nozzles 10 and 11 are provided in both the first and second branch pipes 4 and 5. However, in the case where the distributor 3 branches into two transport paths. For example, an adjustment air nozzle may be provided at two branch pipes where the conveyance amount increases when the pipe resistance is small and no adjustment is made.
【００２６】また、上記の実施の形態においては、ノズ
ル１０，１１から搬送流に逆行する方向に調整用エアー
を噴射する例を示したが、本発明においては、要する
に、流量を小さくする必要がある分岐管に抵抗となるよ
うにエアーを噴射すればよいので、搬送流に対して直交
方向に噴射してもよい。Further, in the above embodiment, the example in which the adjusting air is jetted from the nozzles 10 and 11 in the direction opposite to the transport flow has been described. However, in the present invention, it is necessary to reduce the flow rate. The air may be jetted to a certain branch pipe so as to provide resistance, so that the jet may be jetted in a direction perpendicular to the transport flow.
【００２７】また、上記実施の形態においては、ノズル
１０，１１の設置位置について特に規定していないが、
分配器３の直下に設置するのが好ましい。Further, in the above-described embodiment, the installation positions of the nozzles 10 and 11 are not particularly specified.
It is preferable to install it directly below the distributor 3.
【００２８】実施の形態２．図５は本発明の実施の形態
２の説明図であり、図において、実施の形態１を説明し
た図１と同一又は相当する部分には同一の符号を付して
いる。本実施の形態は、搬送停止中の分岐管において滞
留した粉粒体が分岐管を閉塞しないように、当該分岐管
に粉粒体を流動化させるための空気を吹き込むようにし
たものである。Embodiment 2 FIG. 5 is an explanatory diagram of Embodiment 2 of the present invention. In the drawing, the same or corresponding portions as those in FIG. In the present embodiment, air for fluidizing the granular material is blown into the branch pipe so that the granular material staying in the branch pipe during the stop of transport does not block the branch pipe.
【００２９】具体的には、分配器３で分岐された３つの
分岐管４，５，１３に開閉弁６，７，１５を設けると共
に、開閉弁６，７，１５の上流側にパージエアー用のノ
ズル１０，１１，１６を設置したものである。ノズル１
０，１１，１６の向きは特に規定しないが、各ノズルか
ら噴射するエアーの圧力は、搬送ガスの圧力よりも高く
設定しておく必要がある。Specifically, on-off valves 6, 7, and 15 are provided in the three branch pipes 4, 5, and 13 branched by the distributor 3, and purge air is provided upstream of the on-off valves 6, 7, and 15. Nozzles 10, 11, and 16 are installed. Nozzle 1
Although the directions of 0, 11, and 16 are not particularly defined, the pressure of the air jetted from each nozzle needs to be set higher than the pressure of the carrier gas.
【００３０】次に、本実施の形態の動作について説明す
る。例えば、分岐管１３が供給先の都合等により廃プラ
スチックの搬送を停止する必要がある場合には、開閉弁
１５を閉じて搬送経路を遮断する。そして、ノズル１６
からエアーを噴射する。このエアーによって、分岐管１
３における分配器３と開閉弁１５間に存在する廃プラス
チックが流動化されて、この部位が廃プラスチックによ
って閉塞されるのを防止できる。Next, the operation of this embodiment will be described. For example, when it is necessary for the branch pipe 13 to stop the transport of the waste plastic due to the supply destination or the like, the on-off valve 15 is closed to shut off the transport path. And the nozzle 16
Inject air from By this air, the branch pipe 1
The waste plastic existing between the distributor 3 and the on-off valve 15 in 3 is fluidized, and this portion can be prevented from being blocked by the waste plastic.
【００３１】なお、分岐管１３による廃プラスチックの
吹込みを開始する場合には、パージエアーの噴射を停止
した後、開閉弁１５を開にするか、又は開閉弁１５を開
にすると同時にあるいは開にした後、パージエアーの噴
射を停止する。このとき、分配器３と開閉弁１５の間に
滞留する廃プラスチックはパージエアーによって流動化
されているので、開閉弁１５を開放することによって、
スムーズに搬送を開始することができる。When the injection of the waste plastic through the branch pipe 13 is started, the injection of the purge air is stopped, and then the opening / closing valve 15 is opened. After that, the injection of the purge air is stopped. At this time, since the waste plastic staying between the distributor 3 and the on-off valve 15 is fluidized by the purge air, by opening the on-off valve 15,
Transfer can be started smoothly.
【００３２】以上のように、本実施の形態によれば、簡
単な構造により、粉粒体による配管の閉塞を防止するこ
とができ、供給先状況に応じて分岐管の柔軟な選択とオ
ン−オフが可能になる。As described above, according to the present embodiment, with a simple structure, it is possible to prevent the clogging of the pipe by the granular material, and it is possible to flexibly select the branch pipe according to the situation of the supply destination and to switch on / off the pipe. Can be turned off.
【００３３】なお、上記の実施の形態１，２において
は、粉粒体の分配制御と配管の閉塞防止を別々に説明し
たが、実施の形態２においてはノズルからのエアーの噴
射方向は特に規定しないので、流れに対して抵抗となる
エアー噴射が可能なようにノズルを設置すれば、廃プラ
スチックの搬送中には分配制御として利用し、搬送停止
中には配管の閉塞防止として利用することができる。In the first and second embodiments, the control of the distribution of powder and granules and the prevention of blockage of the pipe are separately described. However, in the second embodiment, the direction of air injection from the nozzle is particularly defined. Therefore, if nozzles are installed so that air jets that can resist flow can be used, they can be used as distribution control during transport of waste plastic and used to prevent pipe blockage while transport is stopped. it can.
【００３４】[0034]
【発明の効果】本発明は以上説明したように構成されて
いるので、つぎのような効果を奏する。Since the present invention is configured as described above, the following effects can be obtained.
【００３５】分配器の下流側の搬送経路に、流れに対し
て抵抗となるように気体を吹き込み、各搬送経路に流れ
る粉粒体の流量バランスを調整するようにしたので、簡
単な手段により、配管の閉塞を生ずることなく、粉粒体
の分配制御を広い範囲で確実に行うことができる。Gas is blown into the transfer path on the downstream side of the distributor so as to resist the flow, and the flow rate balance of the powder and the granular material flowing in each transfer path is adjusted. The distribution control of the granular material can be reliably performed in a wide range without causing the clogging of the pipe.
【００３６】また、分配器の下流側の搬送経路が遮断さ
れて搬送が停止されたときに、該搬送停止中の搬送経路
に気体を吹き込み、該搬送停止中の経路内の粉粒体を流
動化させて、搬送経路の閉塞を防止するようにしたの
で、簡単な構造により、粉粒体による配管の閉塞を防止
することができ、供給先状況に応じて分岐管の柔軟な選
択と搬送開始−停止が可能になる。Further, when the transport path on the downstream side of the distributor is shut off and the transport is stopped, the transport path during which the transport is stopped is stopped.
The blowing gas, by fluidizing the granular material in the path in the conveyance stop, since to prevent the clogging of the transport path, by a simple structure, to prevent the clogging of the piping caused by granular material to This makes it possible to flexibly select a branch pipe and start / stop transport according to the situation of the supply destination.
【００３７】また、搬送経路の途中に設けられ、粉粒体
の流量を複数の搬送経路に分配する分配装置と、前記複
数の搬送経路のそれぞれに設けられた開閉弁と、該開閉
弁と前記分配器との間に設けられ前記複数の搬送経路に
気体を吹き込む気体吹込みノズルとを設け、該気体吹込
みノズルを下流側から上流側に向けて気体を吹き込むよ
うにしたので、粉粒体の搬送中には均等分配ができると
共に、搬送停止中には配管の閉塞防止をすることができ
る。A distribution device provided in the middle of the transport path for distributing the flow rate of the granular material to the plurality of transport paths; an on-off valve provided on each of the plurality of transport paths; A gas blowing nozzle provided between the distributor and the plurality of transport paths for blowing gas into the plurality of transport paths, and the gas blowing nozzle is configured to blow gas from a downstream side toward an upstream side. Can be evenly distributed during the transfer, and the clogging of the pipe can be prevented while the transfer is stopped.
【図１】 本発明の実施の形態１の装置の説明図であ
る。FIG. 1 is an explanatory diagram of an apparatus according to a first embodiment of the present invention.
【図２】 本発明の実施の形態１の分岐部の一部側面を
含む側面図である。FIG. 2 is a side view including a partial side surface of a branch portion according to the first embodiment of the present invention.
【図３】 図１における分岐部の部分の拡大図である。FIG. 3 is an enlarged view of a branch portion in FIG.
【図４】 本発明の実施の形態１における実験結果を示
すグラフである。FIG. 4 is a graph showing experimental results according to the first embodiment of the present invention.
【図５】 本発明の実施の形態２の装置の説明図であ
る。FIG. 5 is an explanatory diagram of an apparatus according to a second embodiment of the present invention.
【図６】 従来の粉体流量分配制御方法に使用する装置
の構成を示す図である。FIG. 6 is a diagram showing a configuration of an apparatus used for a conventional powder flow distribution control method.
【図７】 従来の気送粉体の分配制御装置の説明図であ
る。FIG. 7 is an explanatory view of a conventional pneumatic powder distribution control device.
【図８】 従来の気送粉体の分配制御装置の説明図であ
る。FIG. 8 is an explanatory view of a conventional pneumatic powder distribution control device.
【符号の説明】 １ 吹込タンク ２ 搬送管 ３ 分配器 ４，５ 第１，２分岐管 ６，７，１５ 開閉弁 １０，１１，１６ ノズル[Description of Signs] 1 Blow tank 2 Conveying pipe 3 Distributor 4,5 First and second branch pipe 6,7,15 Open / close valve 10,11,16 Nozzle
───────────────────────────────────────────────────── フロントページの続き (72)発明者 望月 峰生 東京都千代田区丸の内一丁目１番２号 日本鋼管株式会社内 (56)参考文献 特開 平10−167472（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B65G 53/00 - 53/28 B65G 53/32 - 53/66 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Mineo Mochizuki 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Inside Nippon Kokan Co., Ltd. (56) References JP-A-10-167472 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) B65G 53/00-53/28 B65G 53/32-53/66
Claims (5)
粒体を複数の搬送経路に分配して搬送する粉粒体の気流
搬送方法において、 前記分配器の下流側の搬送経路に、流れに対して抵抗と
なるように気体を吹き込み、各搬送経路に流れる粉粒体
の流量バランスを調整するようにしたことを特徴とする
粉粒体の気流搬送方法。1. A method for air-flowing a granular material in which a granular material is distributed to a plurality of transport routes by a distributor provided in the middle of the transport route and is transported, wherein the flow is transferred to a transport route downstream of the distributor. A gas flow is blown so as to have a resistance to the air flow, and a flow rate balance of the powder and the granular material flowing in each transport path is adjusted.
粒体を複数の搬送経路に分配して搬送する粉粒体の気流
搬送方法において、 前記分配器の下流側の搬送経路が遮断されて搬送が停止
されたときに、該搬送停止中の搬送経路に気体を吹き込
み、該搬送停止中の経路内の粉粒体を流動化させて、搬
送経路の閉塞を防止するようにしたことを特徴とする粉
粒体の気流搬送方法。2. A method for air-flowing a granular material in which a granular material is distributed to a plurality of transport routes by a distributor provided in the middle of the transport route, wherein the transport route downstream of the distributor is shut off. Transport stopped
Gas is blown into the transport path during which the transport is stopped.
A method for transporting the powder and granules in a gas stream , wherein the powder and the granules in the path during which the transport is stopped are fluidized to prevent the transport path from being blocked.
る粉粒体の気流搬送装置において、 搬送経路の途中に設けられ、粉粒体の流量を複数の搬送
経路に分配する分配装置と、前記複数の搬送経路に設け
られ、流れに対して抵抗する向きに気体を吹き込むノズ
ルとを備えたことを特徴とする粉粒体の気流搬送装置。3. A pneumatic conveying apparatus for conveying a granular material from an upstream side to a downstream side, the distributing device being provided in the middle of a conveying path and distributing a flow rate of the granular material to a plurality of conveying paths. And a nozzle provided in each of the plurality of transport paths and blowing a gas in a direction that resists the flow.
る粉粒体の気流搬送装置において、 搬送経路の途中に設けられ、粉粒体の流量を複数の搬送
経路に分配する分配装置と、前記複数の搬送経路のそれ
ぞれに設けられた開閉弁と、該開閉弁と前記分配器との
間に設けられて前記複数の搬送経路において流れに対し
て抵抗する向きに気体を吹き込むノズルとを設けたこと
を特徴とする粉粒体の気流搬送装置。4. A distribution device for air-granulated powder that conveys the powder from an upstream side to a downstream side, wherein the distribution device is provided in the middle of a conveyance path and distributes a flow rate of the powder to a plurality of conveyance paths. An on-off valve provided on each of the plurality of transport paths, and a flow path provided on the plurality of transport paths provided between the on-off valve and the distributor.
And a nozzle for blowing a gas in a direction of resistance .
方向の軸線と吹き込み地点よりも下流側の配送経路の軸
線の成す角度が９０度以内になるように設定されている
ことを特徴とする請求項３又は４記載の粉粒体の気流搬
送装置。5. The gas blowing direction of the nozzle is set such that an angle between an axis of the direction and an axis of a delivery route downstream of the blowing point is within 90 degrees. Item 5. An air flow conveying device for a granular material according to Item 3 or 4 .
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19411699A JP3341720B2 (en) | 1999-07-08 | 1999-07-08 | Method and apparatus for airflow transport of granular material |
| PCT/JP2000/004494 WO2001004030A1 (en) | 1999-07-08 | 2000-07-06 | Method and device for cutting out and transporting powder and granular material |
| EP00944287A EP1211202A4 (en) | 1999-07-08 | 2000-07-06 | Method and device for cutting out and transporting powder and granular material |
| KR1020017016392A KR100565177B1 (en) | 1999-07-08 | 2000-07-06 | Method and device for cutting out and transporting powder and granular material |
| TW89113499A TW458935B (en) | 1999-07-08 | 2000-07-07 | Method and device for cutting out and transporting powder and granular material |
| US10/040,139 US20020114672A1 (en) | 1999-07-08 | 2002-01-02 | Method for feeding out and transporting powdery and granular material and apparatus therefore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19411699A JP3341720B2 (en) | 1999-07-08 | 1999-07-08 | Method and apparatus for airflow transport of granular material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001019161A JP2001019161A (en) | 2001-01-23 |
| JP3341720B2 true JP3341720B2 (en) | 2002-11-05 |
Family
ID=16319195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19411699A Expired - Fee Related JP3341720B2 (en) | 1999-07-08 | 1999-07-08 | Method and apparatus for airflow transport of granular material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3341720B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5066868B2 (en) * | 2006-08-24 | 2012-11-07 | 三菱マテリアル株式会社 | Method for adjusting distribution ratio of raw material supply path of raw material blowing apparatus and raw material blowing apparatus using the same |
| JP6411873B2 (en) * | 2014-11-25 | 2018-10-24 | 株式会社トップ工業 | Flow dividing device, control method, flow dividing method and program, and flow rate characteristic measuring method |
| CN108629115A (en) * | 2018-05-04 | 2018-10-09 | 安徽工业大学 | A kind of dedusting pipe network resistance balance method |
| CN112224892A (en) * | 2020-10-14 | 2021-01-15 | 中国石油化工股份有限公司 | Accurate feed arrangement of low concentration solid particle |
-
1999
- 1999-07-08 JP JP19411699A patent/JP3341720B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001019161A (en) | 2001-01-23 |
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