JPS61111225A - Suction circulation transport method for granular powder - Google Patents
Suction circulation transport method for granular powderInfo
- Publication number
- JPS61111225A JPS61111225A JP23221884A JP23221884A JPS61111225A JP S61111225 A JPS61111225 A JP S61111225A JP 23221884 A JP23221884 A JP 23221884A JP 23221884 A JP23221884 A JP 23221884A JP S61111225 A JPS61111225 A JP S61111225A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- path
- valve
- nitrogen
- circulation path
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/28—Systems utilising a combination of gas pressure and suction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は粉粒体をサクションノズルから吸引して輸送す
る粉粒体の輸送方法の改良に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an improvement in a method for transporting powder and granules by suctioning and transporting the powder and granules through a suction nozzle.
（従来技術）
従来の粉粒体の吸引輸送方法を第２図を参照して説明す
る。すなわち従来の方法は、第２図のブロワ２で経路４
内の空気を吸引するとサクションノズル６の吸入口から
粉粒体８が周囲の大気と一緒に吸引され、経路４を通っ
てバッグフィルタ１０に流入した粉粒体８をバッグフィ
ルタ１０で分離して輸送する方法である。(Prior Art) A conventional method for sucking and transporting powder and granules will be explained with reference to FIG. In other words, in the conventional method, the blower 2 in FIG.
When the air inside is sucked, the powder and granular material 8 is sucked together with the surrounding atmosphere from the suction port of the suction nozzle 6, and the powder and granular material 8 that flows into the bag filter 10 through the path 4 is separated by the bag filter 10. It is a method of transportation.
しかしながら斯かる従来の方法では粉粒体８が周囲の大
気と一緒に輸送されるために粉粒体８が大気中の湿気を
吸って変質したり固まってしまう等の問題がある。However, in such a conventional method, since the powder or granular material 8 is transported together with the surrounding atmosphere, there is a problem that the powder or granular material 8 absorbs moisture from the atmosphere and deteriorates or hardens.
（発明の目的）
本発明は輸送中に粉塵爆発の防止および粉粒体を変質さ
せずに輸送することができる粉粒体の吸引循環輸送方法
を提供することを目的としている。(Objective of the Invention) An object of the present invention is to provide a suction circulation transport method for powder and granular material that can prevent dust explosions during transportation and transport the powder and granular material without changing its quality.
（発明の構成）
本発明は、ブロワとバッグフィルタを有する閉回路の循
環経路にサクションノズルと粉粒体を変質させないよう
な輸送用気体を供給する気体供給機構を接続し、前記循
環経路内を輸送用気体で置換した後に、ブロワ下流に接
続された排出管のコントロール弁を圧力検出器で開閉制
御して循環経路内を粉粒体の吸入が可能な負圧に維持し
、ブロワ下流の循環経路からサクションノズルの吸入口
近傍に輸送用気体を吐出して粉粒体をサクションノズル
からバッグフィルタへ輸送することを特徴とする粉粒体
の吸引、循環輸送方法である。(Structure of the Invention) The present invention connects a suction nozzle to a closed circuit circulation path having a blower and a bag filter, and a gas supply mechanism that supplies a transportation gas that does not alter the quality of the powder or granules, and the inside of the circulation path is After replacing the gas with the transport gas, a pressure sensor controls the opening and closing of the control valve of the discharge pipe connected downstream of the blower to maintain a negative pressure in the circulation path that allows the intake of powder and granules. This is a method for suctioning and circulating granular material, which is characterized in that the granular material is transported from the suction nozzle to the bag filter by discharging transporting gas from a path near the suction port of the suction nozzle.
（実施例）
本発明を実施するための装置を示す第１図において、循
環経路２０にはバッグフィルタ２２とブロワ２４が介装
されており、閉回路を形成している。ブロワ２４は矢印
Ａ方向に循環経路２０内の流体を流通させるようになっ
ている。ブロワ２４より下流の循環経路２０には開閉弁
２５を有する接続管２６を介してサクションノズル２８
が接続されている。サクションノズル２８は小径管３０
Ｉ と大径管３２を同心に配置した２重管式で
ある。(Example) In FIG. 1 showing an apparatus for implementing the present invention, a bag filter 22 and a blower 24 are interposed in a circulation path 20, forming a closed circuit. The blower 24 is configured to circulate the fluid within the circulation path 20 in the direction of arrow A. A suction nozzle 28 is connected to the circulation path 20 downstream of the blower 24 via a connecting pipe 26 having an on-off valve 25.
is connected. The suction nozzle 28 is a small diameter pipe 30
It is a double pipe type in which the pipe I and the large diameter pipe 32 are arranged concentrically.
サクションノズル２８の吸入口は容器３４に挿入されて
おり、容器３４内には粉粒体３６が収容されている。容
器３４は粉体により粉体シールされている。４０は大径
管３２と接続する吐出管である。吐出管４０には開閉弁
４２が介装されている。The suction port of the suction nozzle 28 is inserted into a container 34, and a powder 36 is accommodated in the container 34. The container 34 is powder-sealed with powder. 40 is a discharge pipe connected to the large diameter pipe 32. An on-off valve 42 is interposed in the discharge pipe 40 .
バイパス管３８には開閉弁４４が設けられている。The bypass pipe 38 is provided with an on-off valve 44 .
ブロワ２４とサクションノズル２８の間の循環経路２０
には気体供給機構４６が接続されている。Circulation path 20 between blower 24 and suction nozzle 28
A gas supply mechanism 46 is connected to.
気体供給機構４６は窒素供給源４８、接続管５ｏ、圧力
調整弁５２、開閉弁５４からなり、循環経路２０内に粉
粒体を変質させない気体すなわち窒素を供給するように
なっている。The gas supply mechanism 46 includes a nitrogen supply source 48, a connecting pipe 5o, a pressure regulating valve 52, and an on-off valve 54, and is configured to supply a gas that does not alter the quality of the powder or granules into the circulation path 20, that is, nitrogen.
ブロワ２４近傍の循環経路２０には排出管５６が設けら
れている。排出管５６の他端は大気に゛開口している。A discharge pipe 56 is provided in the circulation path 20 near the blower 24 . The other end of the discharge pipe 56 is open to the atmosphere.
排出管５６の途中には開閉弁５８が介装されており、開
閉弁５８はサクションノズル２８近傍の循環経路２０に
設けられた圧力検出器６０からの信号で開閉されるよう
になっている。An on-off valve 58 is interposed in the middle of the discharge pipe 56, and the on-off valve 58 is opened and closed in response to a signal from a pressure detector 60 provided in the circulation path 20 near the suction nozzle 28.
次に第１図の装置で実施する粉粒体３６の輸送方法を説
明する。まず循環経路２０、バッグフィルタ２２内の空
気を次のようにして窒素と置換する。すなわち開閉弁２
５．４２．６１を閉弁し、 。Next, a method for transporting the powder material 36 using the apparatus shown in FIG. 1 will be explained. First, the air in the circulation path 20 and the bag filter 22 is replaced with nitrogen in the following manner. That is, on-off valve 2
5.42.61 was closed.
開閉弁５８を開弁じて気体供給機構４６から窒素を循環
経路２０内に供給し循環経路２０１バツグフイルタ２２
内の空気を追出し窒素を充満させて置換を行ない、置換
完了後、開閉弁５４を開弁する。次に開閉弁６１を開弁
して開閉弁５８を圧力検出器６０で開閉制御しながらブ
ロワ２４の運転を続けると、循環経路２０内の窒素はバ
イパス管３８、排出管５６から流出して減圧され、やが
てサクションノズル２８近傍が負圧となり例えば−５０
０ｍＡｑになる。循環経路２０内が一５００ｇＡｑ程度
の負圧になると圧力検出器６０からの信号で開閉弁５８
は開弁され、−５００ｍＡｑ以上の圧力になると再び圧
力検出器６０からの信号で開閉弁５８は開弁されて循環
経路２ｏ内を粉粒体３６を吸入し得る程度の負圧に維持
する。The on-off valve 58 is opened to supply nitrogen from the gas supply mechanism 46 into the circulation path 20, and the circulation path 201 and the bag filter 22 are supplied with nitrogen.
The air inside is expelled and replaced with nitrogen, and after the replacement is completed, the on-off valve 54 is opened. Next, when the on-off valve 61 is opened and the blower 24 continues to operate while controlling the on-off valve 58 to open and close using the pressure detector 60, the nitrogen in the circulation path 20 flows out from the bypass pipe 38 and the discharge pipe 56, reducing the pressure. Eventually, the vicinity of the suction nozzle 28 becomes negative pressure, for example -50
It becomes 0mAq. When the inside of the circulation path 20 reaches a negative pressure of about 1,500 gAq, the on-off valve 58 is activated by a signal from the pressure detector 60.
is opened, and when the pressure reaches -500 mAq or more, the on-off valve 58 is opened again in response to a signal from the pressure detector 60, and the inside of the circulation path 2o is maintained at a negative pressure to the extent that the granular material 36 can be sucked.
この状態で開閉弁２５．４２を開弁、開閉弁４４を閉弁
するとサクションノズル２８の吸入口から粉粒体３６が
吐出管４０より吐出された窒素とともにサクションノズ
ル２８に吸入され、循環経路２０内を矢印六方向に流れ
てバッグフィルタ２２に流入する。したがって粉粒体３
６は輸送途中には周囲の大気と接触せず、粉粒体３６が
大気中の湿気を吸って変質する恐れはない。バッグフィ
ルタ２２に窒素と一緒に流入した粉粒体３６はバッグフ
ィルタ２２で窒素と分離されてバッグフィルタ２２内に
貯蔵され、窒素は矢印六方向に循環経路２０を流通して
循環する。In this state, when the on-off valves 25 and 42 are opened and the on-off valves 44 are closed, the powder 36 is sucked into the suction nozzle 28 from the suction port of the suction nozzle 28 along with nitrogen discharged from the discharge pipe 40, and the circulation path 20 It flows inside in the six directions of arrows and flows into the bag filter 22. Therefore, powder 3
6 does not come into contact with the surrounding atmosphere during transportation, and there is no fear that the powder or granular material 36 absorbs moisture from the atmosphere and deteriorates in quality. The powder 36 that has flowed into the bag filter 22 together with nitrogen is separated from the nitrogen by the bag filter 22 and stored in the bag filter 22, and the nitrogen is circulated through the circulation path 20 in the six directions of arrows.
（発明の効果）
以上説明したように本発明の粉粒体の吸引循環輸送方法
は、ブロワとバッグフィルタを有する閉回路の循環経路
にサクションノズルと粉粒体を変質させないような輸送
用気体を供給する気体供給機構を接続し、前記循環経路
内を輸送用気体で置換した後に、ブロワ下流に接続され
た排出管のコントロール弁を圧力検出器で開閉制御して
循環経路内を粉粒体の吸入が可能な負圧に維持し、ブロ
ワ下流の循環経路からサクションノズルの吸入口近傍に
輸送用気体を吐出して粉粒体をサクションノズルからバ
ッグフィルタへ輸送するので、輸送途中においては粉粒
体３６は常に窒素と一緒に循環径路２０内を流れること
になり、従来のように粉粒体３６が大気と接触して湿気
を吸い変質することはなく、粉粒体３６を変質させずに
吸引輸送し得る。(Effects of the Invention) As explained above, the suction circulation transportation method for powder and granular materials of the present invention provides a suction nozzle and a transportation gas that does not alter the quality of the powder and granular materials in a closed circuit circulation path that includes a blower and a bag filter. After connecting the gas supply mechanism and replacing the inside of the circulation path with transportation gas, a pressure detector controls the opening and closing of the control valve of the discharge pipe connected downstream of the blower to remove the powder and granules from inside the circulation path. Negative pressure is maintained at which suction is possible, and transportation gas is discharged from the circulation path downstream of the blower to the vicinity of the suction nozzle inlet to transport the powder from the suction nozzle to the bag filter. The powder 36 always flows together with nitrogen in the circulation path 20, and the powder 36 does not come into contact with the atmosphere and absorb moisture and deteriorate in quality, unlike in the conventional case. Can be transported by suction.
また循環経路２０、バッグフィルタ２２内は圧力検出器
６０で開閉制御される開閉弁５８によって例えばサクシ
ョンノズル２８近傍が一５００ａｗＡＱ程度の負圧に維
持されるので、気体供給機＠４６から供給される窒素を
いたずらに大気に排出して窒素の消費ｍを増大させるこ
とはなく、窒素を節約することができる。In addition, the inside of the circulation path 20 and the bag filter 22 are maintained at a negative pressure of about 1500 awAQ near the suction nozzle 28, for example, by an on-off valve 58 that is controlled to open and close by a pressure detector 60, so that the gas is supplied from the gas supply device @46. Nitrogen can be saved without increasing nitrogen consumption m by unnecessarily discharging nitrogen into the atmosphere.
（別の実施例）
（１） 粉粒体を変質させないような輸送用気体は窒素
に限らず、例えば他の不活性ガス類等でもよい。(Another Example) (1) The transportation gas that does not alter the quality of the powder or granular material is not limited to nitrogen, and may be other inert gases, for example.
Claims (1)
クションノズルと粉粒体を変質させないような輸送用気
体を供給する気体供給機構を接続し、前記循環経路内を
輸送用気体で置換した後に、ブロワ下流に接続された排
出管のコントロール弁を圧力検出器で開閉制御して循環
経路内を粉粒体の吸入が可能な負圧に維持し、ブロワ下
流の循環経路からサクションノズルの吸入口近傍に輸送
用気体を吐出して粉粒体をサクションノズルからバッグ
フィルタへ輸送することを特徴とする粉粒体の吸引循環
輸送方法。A suction nozzle and a gas supply mechanism that supplies a transportation gas that does not alter the quality of the powder or granules are connected to a closed circuit circulation path that includes a blower and a bag filter, and after replacing the inside of the circulation path with the transportation gas, the blower A pressure sensor controls the opening and closing of the control valve of the discharge pipe connected downstream to maintain a negative pressure in the circulation path that allows the suction of powder and granules. 1. A suction circulation transport method for powder and granular material, characterized in that the powder and granular material is transported from a suction nozzle to a bag filter by discharging a transportation gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23221884A JPS61111225A (en) | 1984-11-02 | 1984-11-02 | Suction circulation transport method for granular powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23221884A JPS61111225A (en) | 1984-11-02 | 1984-11-02 | Suction circulation transport method for granular powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61111225A true JPS61111225A (en) | 1986-05-29 |
Family
ID=16935830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23221884A Pending JPS61111225A (en) | 1984-11-02 | 1984-11-02 | Suction circulation transport method for granular powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61111225A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630838A1 (en) * | 1993-06-24 | 1994-12-28 | The BOC Group plc | Particulate material transfer |
| JP2013147321A (en) * | 2012-01-19 | 2013-08-01 | Aishin Nano Technologies Co Ltd | Material pneumatic conveying system |
| JP2018118848A (en) * | 2017-01-27 | 2018-08-02 | 株式会社金星 | Powder supply system and powder supply method |
-
1984
- 1984-11-02 JP JP23221884A patent/JPS61111225A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0630838A1 (en) * | 1993-06-24 | 1994-12-28 | The BOC Group plc | Particulate material transfer |
| JP2013147321A (en) * | 2012-01-19 | 2013-08-01 | Aishin Nano Technologies Co Ltd | Material pneumatic conveying system |
| JP2018118848A (en) * | 2017-01-27 | 2018-08-02 | 株式会社金星 | Powder supply system and powder supply method |
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