JPH0716654Y2 - Plug-like transport device for powder and granular material - Google Patents
Plug-like transport device for powder and granular materialInfo
- Publication number
- JPH0716654Y2 JPH0716654Y2 JP1985034156U JP3415685U JPH0716654Y2 JP H0716654 Y2 JPH0716654 Y2 JP H0716654Y2 JP 1985034156 U JP1985034156 U JP 1985034156U JP 3415685 U JP3415685 U JP 3415685U JP H0716654 Y2 JPH0716654 Y2 JP H0716654Y2
- Authority
- JP
- Japan
- Prior art keywords
- granular material
- air
- powder
- plug
- pressure 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.)
- Expired - Lifetime
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- Air Transport Of Granular Materials (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 この考案は、粉粒体を空気又はガスなどの高圧気体によ
つて輸送管内を輸送する装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a device for transporting a powder or granular material in a transport pipe by a high pressure gas such as air or gas.
周知のように栓状輸送（別名、プラグ輸送とも称す。）
は、高速低圧輸送の欠点を補なうために開発された輸送
方法であり、粉粒体と気体とを交互に相をなして分断し
た状態で輸送管内を輸送する方式であり、その利点は粉
粒体の分離、偏析、摩耗、破砕などを防止し、かつ高混
合比でしかも低動力の輸送が可能であることである。As is well known, plug-like transportation (also called plug transportation).
Is a transportation method developed to compensate for the shortcomings of high-speed low-pressure transportation, and is a method of transporting in a transportation pipe in a state where powder particles and gas are alternately phased and divided, and the advantages are It is possible to prevent the separation, segregation, abrasion, crushing, etc. of the powder and granules, and to transport with a high mixing ratio and low power.
このような栓状輸送では、高圧気体により粉粒体流を分
断するエアナイフを利用した装置が、設備費、運転費な
どの点において有利なため、一般に使用されている。In such plug-like transportation, an apparatus using an air knife that divides a powder / granular flow by a high-pressure gas is generally used because it is advantageous in terms of equipment cost, operation cost, and the like.
第７図は特公昭49−4914号公報にかかわる従来の栓状輸
送装置を示しており、タンク10は、下部にホツパ部12を
有し、上部の開閉弁14を介して粉粒体を供給され、高圧
空気は電磁弁16を介してタンク10の上部と下部のホツパ
部12とからタンク10内へ供給される。粉粒体流切断室と
してのエアナイフ18は、水平方向に配置され、一端を輸
送管20に接続され、他端を開閉弁22及びベンド24を介し
てホツパ部12の下端へ接続されている。電磁弁26はエア
ナイフ18への高圧空気の供給を制御し、圧力スイツチ28
はタンク10内の圧力を検出する。FIG. 7 shows a conventional plug-like transportation device according to Japanese Patent Publication No. 49-4914, in which a tank 10 has a hopper 12 at a lower part and supplies a granular material through an opening / closing valve 14 at an upper part. The high-pressure air is supplied into the tank 10 from the upper and lower hoppers 12 of the tank 10 via the solenoid valve 16. The air knife 18 as a powder / particle flow cutting chamber is arranged in a horizontal direction, one end thereof is connected to the transport pipe 20, and the other end thereof is connected to the lower end of the hopper portion 12 via the opening / closing valve 22 and the bend 24. The solenoid valve 26 controls the supply of high-pressure air to the air knife 18, and the pressure switch 28
Detects the pressure in the tank 10.
第８図は第７図のエアナイフ18の詳細を示し、円筒状の
多孔質ストレーナ30はエアナイフ18の両側に接続されて
いる管路の内径に等しい内径を有し、ストレーナ30の外
周にはストレーナ30を包囲するように環状の空気室32が
設けられ、高圧空気が導管34を介して空気室32へ供給さ
れる。FIG. 8 shows the details of the air knife 18 of FIG. 7, in which the cylindrical porous strainer 30 has an inner diameter equal to the inner diameters of the pipes connected to both sides of the air knife 18, and the strainer is provided on the outer periphery of the strainer 30. An annular air chamber 32 is provided so as to surround 30 and high-pressure air is supplied to the air chamber 32 via a conduit 34.
この栓状輸送装置では、開閉弁14を介して粉粒体がタン
ク10へ供給された後、開閉弁14が閉じ、次に電磁弁16が
開いて高圧空気がタンク10の上部と下部とから供給され
て、粉粒体が下方へ押し込まれるとともに、下部におい
て流動化されるタンク10内の圧力が所定値以上になつた
ことが圧力スイツチ28により検出されると、開閉弁22が
開いてエアナイフ18へ流動状の粉粒体が導かれるととも
に、電磁開閉弁26が設定された周期で開閉を繰り返し、
高圧空気がエアナイフ18へ間欠的に供給される。これに
より粉粒体が空気により栓状に分断されて輸送管20内を
流される。In this plug-like transportation device, after the powdery particles are supplied to the tank 10 through the opening / closing valve 14, the opening / closing valve 14 is closed, and then the solenoid valve 16 is opened so that high pressure air is supplied from the upper and lower portions of the tank 10. When the pressure switch 28 detects that the pressure in the tank 10 fluidized at the lower portion of the fluidized material is pushed downward and is fluidized at the lower portion, the on-off valve 22 opens and the air knife is opened. While the fluid granular material is guided to 18, the electromagnetic on-off valve 26 repeats opening and closing at the set cycle,
High pressure air is intermittently supplied to the air knife 18. As a result, the powder and granules are divided into a plug shape by the air and flow through the transportation pipe 20.
この装置では、ホツパ部12から供給される高圧空気は粉
粒体の架橋を破壊する程度の少量であり、ホツパ部12に
おける吹き込み位置も、ホツパ部12下端の出口オリフイ
スからホツパ部12の高さの1/3〜1/6の所となつているの
で、気泡をあまり含まない密な状態の粉粒体が、エアナ
イフ18及び輸送管20の方へ押し出されることになる。し
たがつて連続して流れている粉粒体がエアナイフ18を通
過する時に、ストレーナ30を介して通路内へ吹き込まれ
た高圧空気により分断されることになるが、粉粒体流が
密であるため、エアナイフ18において粉粒体流を完全に
分断することが難しくなり、第９図に示すように輸送管
20では少量の粉粒体36が空気38の下部としての管底に残
つた状態の栓状流となつてしまう。このため第10図のよ
うに粉粒体36と空気38とが完全に分離した栓状流に比
べ、粉粒体の栓状部分が管底に残つている粉粒体の上を
移動することになるので、粉粒体間にせん断応力が発生
し、栓状輸送のために余分な圧力を要することになる。In this device, the high-pressure air supplied from the hopper 12 is small enough to destroy the bridges of the granular material, and the blowing position in the hopper 12 is also the height of the hopper 12 from the exit orifice at the lower end of the hopper 12. Since it is 1/3 to 1/6 of the above, the granular material in a dense state containing few bubbles is extruded toward the air knife 18 and the transport pipe 20. Therefore, when the granular material flowing continuously passes through the air knife 18, it is divided by the high pressure air blown into the passage through the strainer 30, but the granular material flow is dense. Therefore, it becomes difficult to completely separate the powder flow in the air knife 18, and as shown in FIG.
At 20, a small amount of the granular material 36 becomes a plug-like flow that remains in the tube bottom as a lower part of the air 38. Therefore, compared to the plug-like flow in which the powder and granules 36 and the air 38 are completely separated as shown in FIG. 10, the plug-like portion of the powder and granules can move over the powder and granules remaining on the bottom of the tube. Therefore, shear stress is generated between the particles, and extra pressure is required for plug-like transportation.
また多孔質ストレーナ30は使用中に徐々に目詰まりを起
こして行き、ストレーナ30を介するエアナイフ用空気の
吹き込みが不十分となり、このため管底に停滞している
粉粒体が増大し、ついには気相が消失し、この結果圧力
損失が増大し、輸送困難となつてしまう。In addition, the porous strainer 30 gradually becomes clogged during use, and the air for the air knife is not sufficiently blown through the strainer 30. The gas phase disappears, resulting in increased pressure loss, which makes transportation difficult.
さらにこの装置ではタンク10に圧力を加えて粉粒体が管
路断面一杯に押し流されている所へ、エアナイフ用高圧
空気を吹き込むので、この高圧空気のために粉粒体流が
タンク10の方へ押し戻されて圧密が増大し、この圧密の
増大した粉粒体流がエアナイフ用高圧空気の吹き込み停
止時に押し出されてくる。したがつて高圧空気による粉
粒体流の次の分断時には前回の時よりも圧密の高い粉粒
体流を分断しなければならず、分断が難しくなる。粉粒
体の種類によつてはこの圧密のために粉粒体の押し出し
が不可能となることがある。Furthermore, in this device, high-pressure air for the air knife is blown to the place where the powder and granules are swept to the full cross section of the pipeline by applying pressure to the tank 10. Is pushed back to increase the consolidation, and the granular material flow with the increased consolidation is pushed out when the blowing of the high pressure air for the air knife is stopped. Therefore, at the time of the next division of the granular material flow by the high pressure air, the granular material flow having a higher degree of consolidation than the previous time must be divided, which makes the division difficult. Depending on the type of the granular material, this compaction may make it impossible to extrude the granular material.
特公昭55−21690号公報の装置は第７図の装置の欠点を
部分的に改良したものであり、その装置について第11図
において説明する。２つのタンク40,42が鉛直方向へ同
軸的に設けられ、粉粒体は開閉弁44を介して上部が上記
側タンク40内へ供給される。別の開閉弁46は、上側タン
ク40と下側タンク42との間に設けられ、上側タンク40か
ら下側タンク42への粉粒体の導入を制御する。上側タン
ク40の上部と下部のホツパ部48とへの高圧空気の供給は
開閉弁50により制御され、下側タンク42の下部のホツパ
部52への高圧空気の供給は開閉弁54により制御される。
輸送管56は下側タンク42の下方に配設され、ホツパ部52
の下端が輸送管56の途中へその上方から接続される。開
閉弁60は輸送管56の上流端に設けられ、輸送管56への高
圧空気の導入を制御する。The device of Japanese Examined Patent Publication No. 55-21690 is a partial improvement of the defect of the device of FIG. 7, and the device will be described with reference to FIG. The two tanks 40 and 42 are provided coaxially in the vertical direction, and the powdery particles are supplied to the inside of the side tank 40 through the opening / closing valve 44. Another on-off valve 46 is provided between the upper tank 40 and the lower tank 42, and controls the introduction of the powder or granular material from the upper tank 40 to the lower tank 42. The supply of high pressure air to the upper and lower hoppers 48 of the upper tank 40 is controlled by an opening / closing valve 50, and the supply of high pressure air to the lower hoppers 52 of the lower tank 42 is controlled by an opening / closing valve 54. .
The transportation pipe 56 is arranged below the lower tank 42, and the transportation pipe 56
The lower end of is connected to the middle of the transport pipe 56 from above. The on-off valve 60 is provided at the upstream end of the transportation pipe 56 and controls the introduction of high-pressure air into the transportation pipe 56.
上記第11図に示す装置では、開閉弁44を開いて粉粒体を
上側タンク40へ導入した後、開閉弁44を閉じ、開閉弁46
を開いて粉粒体を上側タンク40から下側タンク42へ落し
込む。開閉弁50と60とは交互に開状態を繰り返えし、開
閉弁50が開いているときに、粉粒体が下側タンク42の下
部のホツパ部52から輸送管56内の上下流へ、その流動が
停止する所まで押し出され、次に開閉弁50が閉じて開閉
弁60が開いたときに、高圧空気が粉流体を輸送管56の下
流の方へ向かつて押し出す。上側タンク40内に粉粒体が
なくなると、開閉弁46,50を閉じ、開閉弁50の代わりに
開閉弁54を作動させて、開閉弁54,60を交互に開かせる
とともに、開閉弁44から粉粒体を上側タンク40へ供給す
る。したがつて栓状輸送を行ないつつ粉粒体をタンクへ
供給することができる。In the device shown in FIG. 11, the on-off valve 44 is opened to introduce the granular material into the upper tank 40, then the on-off valve 44 is closed and the on-off valve 46 is opened.
To open the powder and granules from the upper tank 40 to the lower tank 42. The open / close valves 50 and 60 are alternately opened, and when the open / close valve 50 is open, the granular material moves from the bottom part 52 of the lower tank 42 to the upstream / downstream of the transportation pipe 56. The high pressure air once pushes the powdered fluid downstream of the transport pipe 56 when it is pushed to the point where its flow stops and then when the on-off valve 50 closes and the on-off valve 60 opens. When there is no powder in the upper tank 40, the opening / closing valves 46, 50 are closed, the opening / closing valve 54 is operated instead of the opening / closing valve 50, and the opening / closing valves 54, 60 are alternately opened. The powder and granules are supplied to the upper tank 40. Therefore, the powdery particles can be supplied to the tank while performing the plug-like transportation.
第11図の装置ではエアナイフによる粉粒体流の分断を行
なわず、輸送管56の上流端から輸送管56の軸線方向へ高
圧空気を押し出して栓状の粉粒体を形成するので、粉粒
体と高圧空気とが完全な栓状状態となり、管底に残つた
粉粒体による圧力損失を防止でき、またストレーナを用
いないので、ストレーナの目詰まりによる輸送困難な事
態も回避できる。さらに開閉弁50,60は交互に開かせら
れるので、輸送管56内へ導入された粉粒体が両側から高
圧空気により押圧されてその圧密が増大するのを防止す
ることができる。しかしながら輸送管56への下側タンク
42の下端のＴ字形接続のため、粉粒体は下側タンク42が
下端から輸送管56の上下流方向へ押し出され、開閉弁5
0,60の開閉時間を制御しても、輸送管56における栓状粉
粒体の長さを制御することは難しく、また長い栓状粉粒
体ができ易い。さらにＴ字形接続部においては高圧空気
は粉粒体を押し出しながらせん断しなければならない。
したがつてこれらの結果、栓状粉粒体の前後の圧力差が
増大し、単位時間当たりの粉粒体の輸送量を一定にした
場合は短い長さの栓状粉粒体の栓状輸送の場合に比べて
高圧空気の圧力を増大する必要があり、必要な動力が増
大する。更にエアナイフを用いない押し出し式の第11図
の装置は、少量輸送やフラツシング性の強い粉粒体の輸
送には適していない。In the apparatus of FIG. 11, the flow of the granular material is not divided by the air knife, and high-pressure air is pushed out from the upstream end of the transportation pipe 56 in the axial direction of the transportation pipe 56 to form a plug-shaped granular material. The body and the high-pressure air are in a completely plug-like state, pressure loss due to powder particles remaining on the tube bottom can be prevented, and since a strainer is not used, it is possible to avoid a situation in which transportation is difficult due to clogging of the strainer. Further, since the on-off valves 50 and 60 are opened alternately, it is possible to prevent the powder or granular material introduced into the transport pipe 56 from being pressed by the high pressure air from both sides to increase its compaction. However the lower tank to the transport pipe 56
Due to the T-shaped connection at the lower end of 42, the lower tank 42 is pushed out of the lower tank 42 from the lower end in the upstream and downstream directions of the transport pipe 56, and the open / close valve 5
Even if the opening and closing times of 0 and 60 are controlled, it is difficult to control the length of the plug-like powder particles in the transport pipe 56, and it is easy to form long plug-like powder particles. Furthermore, at the T-junction, the high pressure air must shear while extruding the granules.
Therefore, as a result of these results, the pressure difference between the front and rear of the plug-like granular material increases, and when the transport amount of the granular material per unit time is constant, the plug-like transportation of the plug-like granular material of a short length is performed. It is necessary to increase the pressure of the high-pressure air as compared with the case (1), and the required power increases. Furthermore, the extruding type device shown in FIG. 11 that does not use an air knife is not suitable for small-quantity transportation or transportation of powder or granular material having a strong flushing property.
この考案は、少量輸送やフラツシング性の強い粉粒体の
輸送にも適し、輸送管における栓状粉粒体の長さを正確
に制御することができ、管底に粉粒体が残存したり、ス
トレーナが目詰まりを起こしたり、粉粒体の圧密が増大
したりする事態を回避することができる粉粒体の栓状輸
送装置によつて前記従来技術の課題を解決しようとする
ものである。This device is also suitable for small-quantity transportation and transportation of powders with strong flushing properties, and it is possible to accurately control the length of plug-like powders in a transport pipe, and to prevent powders or granules remaining at the bottom of the pipe. The present invention is intended to solve the above-mentioned problems of the prior art by a plug-like transport device for powder or granular material which can avoid the situation where the strainer is clogged or the compaction of powder or granular material is increased. .
すなわちこの考案は粉粒体を収容し下部に漏斗状ホツパ
部を構成したタンクと、多孔質材料から成り高圧空気を
前記ホツパ部内に導入するエアレーシヨン用成形体と、
鉛直方向へ延び上端において前記ホツパ部の下端に接続
しかつ半径方向外方向からストレーナを介して供給する
高圧空気により内部の粉流体を流動化するかくはん室
と、水平方向へ延び一端を輸送管へ接続し他端を前記か
くはん室の下端へ接続し中間部の内径を両端部の内径よ
り大きくすると共に前記中間部に半径方向上方から高圧
空気を供給する粉粒体流切断室と、前記中間部と、前記
エアレーシヨン成形体及び前記かくはん室とへ高圧空気
を間欠的に交互に導く弁とを有していることを特徴とす
る粉粒体の栓状輸送装置。That is, this invention is a tank containing powder and granules and having a funnel-shaped hopper portion at the bottom, a molded body for an air race, which is made of a porous material and introduces high-pressure air into the hopper portion,
A stirring chamber which extends vertically and is connected to the lower end of the hopper at the upper end and which fluidizes the powder fluid inside by high pressure air supplied from the radial outside through a strainer, and a horizontally extending one end to the transport pipe. And the other end is connected to the lower end of the stirring chamber, the inner diameter of the intermediate portion is made larger than the inner diameters of both end portions, and a granular material flow cutting chamber for supplying high pressure air from above in the radial direction to the intermediate portion, and the intermediate portion. And a valve for guiding high-pressure air intermittently and alternately to the air-race molded body and the stirring chamber.
タンク下部ホツパ部に設けられたエアレーシヨン用成形
体から高圧空気が供給されるとタンク下部のホツパ部か
らかくはん室へ流入することにより絞られて少量となつ
た粉粒体はかくはん室においてストレーナを介して高圧
空気を供給され、十分な量の気泡を含んでいる状態とな
つて、粉粒体流切断室へ押し出される。When high-pressure air is supplied from the air-race molded body provided in the tank lower part of the tank, a small amount of powdered granules that are squeezed by flowing into the stirring chamber from the lower part of the tank pass through a strainer in the stirring chamber. High-pressure air is supplied to the powdery-particles cutting chamber, which contains a sufficient amount of air bubbles.
粉粒体流切断室の中間部は内径が増大されているので、
中間部において粉粒体は減速するとともに粉粒体の上部
に空隙が生じる。ホツパ部に導かれていた高圧空気が遮
断されると同時に攪拌室に導かれていた高圧空気は三方
口電磁弁により切り換えられ、粉粒体流切断室の中間部
の上記粉流体上部の空隙へ半径方向上方から供給される
ことにより、粉粒体は切断されて片方は栓状となるとと
もに輸送管側の方へ押し出され、他方は中間部の空隙へ
押し上げられる。Since the inner diameter of the middle part of the particle flow cutting chamber is increased,
In the middle part, the particles are decelerated, and voids are formed in the upper part of the particles. At the same time that the high-pressure air introduced to the hopper is shut off, the high-pressure air introduced to the stirring chamber is switched by the three-way solenoid valve to the void above the powder fluid in the middle of the particle flow cutting chamber. By being supplied from above in the radial direction, the powder and granules are cut and one of them becomes a plug-like shape and is pushed out toward the transport pipe side, and the other is pushed up into the void in the middle part.
第１図ないし第６図によつてこの考案の実施例を説明す
る。An embodiment of the present invention will be described with reference to FIGS.
第１図において、タンク66は下部にホツパ部68を有し、
上部の開閉弁69を介して粉粒体を供給される。かくはん
室70はホツパ部68の下にそれに続いて設けられ、上端に
おいてホツパ部68の下端に結合し、鉛直方向へ延びてい
る。かくはん室70は環状の多孔質ストレーナ72により画
定され、半径方向において外筒74により包囲されてい
る。エアナイフとしての粉粒体流切断室76は、水平方向
へ延び、下流端において輸送管78へ接続され、上流端に
おいてベンド80を介してかくはん室70の下部のホツパ部
82へ接続されている。開閉弁84は、ベンド80と粉粒体流
切断室76との間に設けられ、かくはん室70から粉粒体流
切断室76への粉粒体の移動を制御する。圧力スイツチ86
は、タンク66内の圧力に関係して作動し、レベルスイツ
チ88はタンク66内の粉粒体のレベルに関係して作動す
る。エアレーシヨン用成形体94は、多孔質材料から成
り、ホツパ部68に装着される。エアレーシヨン用成形体
94へは高圧空気が管路96を介して導かれ、管路96には二
方口電磁弁98及び逆止弁100が設けられている。粉粒体
流切断室76には高圧空気が管路102を介して三方口電磁
弁104の入口105から導かれ、管路102には逆止弁106が設
けられている。外筒74は管路108を介して三方口電磁弁1
04の他方の出口へ接続され、管路108には逆止弁110が設
けられる。電気制御操作盤112は、圧力スイツチ86及び
レベルスイツチ88から信号を入力され、開閉弁69,84及
び電磁弁98,104へ制御信号を送る。In FIG. 1, the tank 66 has a hopper portion 68 at the bottom,
Granules are supplied through the opening / closing valve 69 on the upper side. The agitation chamber 70 is provided under the hopper portion 68 and follows, and is connected to the lower end of the hopper portion 68 at the upper end and extends in the vertical direction. The stirring chamber 70 is defined by an annular porous strainer 72 and is surrounded by an outer cylinder 74 in the radial direction. The particle flow cutting chamber 76 as an air knife extends in the horizontal direction, is connected to the transport pipe 78 at the downstream end, and is provided at the upstream end with a bender 80 at the lower part of the stirring chamber 70 via a bend 80.
Connected to 82. The opening / closing valve 84 is provided between the bend 80 and the granular material flow cutting chamber 76, and controls the movement of the granular material from the stirring chamber 70 to the granular material flow cutting chamber 76. Pressure switch 86
Operates in relation to the pressure in the tank 66, and the level switch 88 operates in relation to the level of the granular material in the tank 66. The air molded body 94 is made of a porous material and is attached to the hopper portion 68. Molded body for air race
High-pressure air is guided to 94 through a pipe 96, and the pipe 96 is provided with a two-way solenoid valve 98 and a check valve 100. High-pressure air is introduced into the granular material flow cutting chamber 76 from the inlet 105 of the three-way solenoid valve 104 via the pipe 102, and the pipe 102 is provided with a check valve 106. Outer cylinder 74 is a three-way solenoid valve 1 via line 108
Connected to the other outlet of 04, the line 108 is provided with a check valve 110. The electric control operation panel 112 receives signals from the pressure switch 86 and the level switch 88, and sends control signals to the open / close valves 69, 84 and solenoid valves 98, 104.
第２図は粉粒体流切断室76の詳細を示し、粉粒体流切断
室76において、中間部116の内径D2は両端部118の内径D1
より大きくなつている。中間部116から端部118への移行
部120はテーパ状に形成され、前述の管路102は半径方向
上方から中間部116へ接続される。FIG. 2 shows the details of the granular material flow cutting chamber 76. In the granular material flow cutting chamber 76, the inner diameter D2 of the intermediate portion 116 is the inner diameter D1 of both end portions 118.
It's getting bigger. The transition portion 120 from the intermediate portion 116 to the end portion 118 is formed in a tapered shape, and the above-described pipe line 102 is connected to the intermediate portion 116 from above in the radial direction.
第１図の実施例の作用について説明する。The operation of the embodiment shown in FIG. 1 will be described.
最初に開閉弁69を開き、開閉弁84を閉じ、電磁弁98を閉
じ、電磁弁104は入口105を管路102へ導く状態にして、
開閉弁69からタンク66内へ粉粒体を供給する。First, the opening / closing valve 69 is opened, the opening / closing valve 84 is closed, the solenoid valve 98 is closed, and the solenoid valve 104 brings the inlet 105 into the line 102,
The on-off valve 69 supplies the granular material into the tank 66.
タンク66が粉粒体により満杯になつたことがレベルスイ
ツチ88により検出されると、開閉弁69を閉じ、電磁弁98
を開き、電磁弁104において入口105を管路102から108へ
切り換える。この結果、エアレーシヨン用成形体94及び
ストレーナ72から、高圧空気がそれぞれホツパ68及びか
くはん室70へ供給され、粉粒体がかくはん、流動化され
る。When the level switch 88 detects that the tank 66 is full of particles, it closes the open / close valve 69 and the solenoid valve 98.
Is opened, and the inlet 105 is switched from the conduit 102 to the conduit 108 in the solenoid valve 104. As a result, high-pressure air is supplied to the hopper 68 and the stirring chamber 70 from the air-race molded body 94 and the strainer 72, respectively, and the particles are stirred and fluidized.
ホツパ部68及びかくはん室70への空気の導入により、タ
ンク66内の圧力が上昇する。タンク66内の圧力が所定値
以上になつたことが圧力スイツチ86により検出される
と、開閉弁84を開き、電磁弁98を閉じ、電磁弁104で入
口105を管路108から102へ切り換える。これにより粉粒
体は、開閉弁84を通つて粉粒体流切断室76へ流れ、粉粒
体流切断室76で切断される。The pressure in the tank 66 rises due to the introduction of air into the hopper portion 68 and the stirring chamber 70. When the pressure switch 86 detects that the pressure in the tank 66 has reached a predetermined value or more, the opening / closing valve 84 is opened, the solenoid valve 98 is closed, and the solenoid valve 104 switches the inlet 105 from the pipeline 108 to the passage 102. As a result, the granular material flows into the granular material flow cutting chamber 76 through the opening / closing valve 84 and is cut in the granular material flow cutting chamber 76.
以後開閉弁84が開のままで、電磁弁98が開、電磁弁104
の入口105が管路108側へ接続の状態の期間と、電磁弁98
が閉、電磁弁104の入口105が管路102側へ接続の状態の
期間とが、所定の周期で交互に繰り返えされ、栓状の粉
粒体と栓状の高圧空気とが交互に輸送管78へ送り出され
る。After that, the solenoid valve 98 remains open and the solenoid valve 104 remains open.
Of the solenoid valve 98 while the inlet 105 of the
Closed, the period of the state in which the inlet 105 of the solenoid valve 104 is connected to the side of the pipe line 102, is alternately repeated at a predetermined cycle, and the plug-like powder particles and the plug-like high-pressure air alternate. It is sent to the transport pipe 78.
第３図及び第４図は粉粒体流切断室76における、高圧空
気122による粉粒体124の切断状況を示している。ベンド
80の方から粉粒体流切断室76の方へ流れてきた粉粒体12
4は、中間部116における内径の増大のために減速すると
ともに、中間部116の上部に空隙を生じさせる（第３
図）。中間部116の粉粒体124は、かくはん室70における
かくはん、流動により、十分な量の気泡を含ませられて
おり、このことと中間部116における減速と上記空隙へ
の管路102からの高圧空気の導入とにより、粉粒体124は
容易、確実かつ完全に切断される（第４図）。こうして
少量のかつ比較的低圧の空気により、栓状の粉粒体124
を形成することができるとともに、これを輸送管78の方
へ押し出すことができる。また中間部116の内径の増大
により、粉粒体124の切断の際に、ベンド80の方へ粉粒
体が戻されるのが抑制され、圧密の粉粒体124を生成す
るのを回避することができる。栓状の粉粒体124の長さ
は、中間部116への高圧空気122の導入の時間間隔、すな
わち電磁弁98,104の開閉又は切換周期を制御することに
より任意に制御することができる。FIG. 3 and FIG. 4 show how the high pressure air 122 cuts the granular material 124 in the granular material flow cutting chamber 76. Bend
Granules flowing from 80 toward the particle flow cutting chamber 76 12
4 decelerates due to an increase in the inner diameter of the intermediate portion 116, and creates a void in the upper portion of the intermediate portion 116 (the third
Figure). The granules 124 in the intermediate portion 116 are made to contain a sufficient amount of bubbles due to the agitation and flow in the stirring chamber 70, which means that deceleration in the intermediate portion 116 and the high pressure from the conduit 102 to the above-mentioned gap. By the introduction of air, the granular material 124 is easily, reliably and completely cut (Fig. 4). Thus, a small amount of air at a relatively low pressure causes the plug-like powder particles 124
Can be formed and can be extruded towards the transport tube 78. Further, due to the increase in the inner diameter of the intermediate portion 116, it is possible to prevent the powder or granules from returning toward the bend 80 when the powder or granules 124 are cut, and to avoid generating the compacted powder or granules 124. You can The length of the plug-like powder or granular material 124 can be arbitrarily controlled by controlling the time interval of introduction of the high-pressure air 122 into the intermediate portion 116, that is, the opening / closing or switching cycle of the solenoid valves 98, 104.
タンク66内に粉粒体がなくなると、輸送圧力が下降して
いくので、タンク66内の圧力が別の所定値以下になつた
ことが圧力スイツチ86により検出されると、開閉弁84を
閉じ、電磁弁98を閉じ、電磁弁104によつて入口105を管
路102へ接続して輸送を終了する。The transport pressure decreases when there is no powder in the tank 66.Therefore, when the pressure switch 86 detects that the pressure in the tank 66 has fallen below another predetermined value, the on-off valve 84 is closed. The solenoid valve 98 is closed, and the inlet 105 is connected to the pipeline 102 by the solenoid valve 104 to end the transportation.
第５図及び第６図はかくはん室70及び粉粒体流切断室76
の変形例を示す。第５図のかくはん室70では粉粒体を減
速させるそらせ部材128がかくはん室70内に設けられて
いる。そらせ部材128は上流側に頂点をもつ円錐状に形
成され、そらせ部材128の下端はストレーナ72の下端よ
り下流になつている。第６図の粉粒体流切断室76では、
輸送管78へ接続される側の端部118の内径D3は、オリフ
イスの機能をもたせるために、D1よりさらに小さくされ
る。こうして粉粒体が十分に減速される結果、フラッシ
ング性の大きい粉粒体の輸送にも十分に対処のすること
ができる。5 and 6 show the stirring chamber 70 and the granular material flow cutting chamber 76.
A modification of is shown. In the stirring chamber 70 shown in FIG. 5, a baffle member 128 for decelerating the granular material is provided in the stirring chamber 70. The deflecting member 128 is formed in a conical shape having an apex on the upstream side, and the lower end of the deflecting member 128 is located downstream of the lower end of the strainer 72. In the granular material flow cutting chamber 76 shown in FIG.
The inner diameter D3 of the end 118 on the side connected to the transport pipe 78 is made smaller than D1 in order to have the function of an orifice. In this way, as a result of the particles being sufficiently decelerated, it is possible to sufficiently deal with the transportation of the particles having a large flushing property.
この考案によれば同じ量を輸送する場合に短かい均一な
プラグを沢山作ることが可能となつたので、小さな圧力
で処理でき、消費動力が少なくてすみ経済的である。下
記に実施例の一部を示す。According to the present invention, it is possible to make many short and uniform plugs when transporting the same amount, so that it is possible to process with a small pressure and consume less power, which is economical. Some of the examples are shown below.
輸送物：合成樹脂粉末、輸送能力8T/H 輸送長：水平35m、垂直15m、曲り８箇所 輸送圧力 0.9kgf/cm2 輸送風量0.95Nm3//min. 以上この考案を好ましい実施例について説明したが、こ
の考案はこれに限定されず、実施例についてこの考案の
範囲内で種々の提案が可能であることは当業者にとつて
明らかである。Package: Synthetic resin powder, transport capacity 8T / H Transport length: Horizontal 35m, vertical 15m, 8 bends Transport pressure 0.9kgf / cm 2 Transport air volume 0.95Nm 3 // min. However, it is obvious to those skilled in the art that the present invention is not limited to this, and various proposals can be made for the embodiments within the scope of the present invention.
１）粉粒体流切断室では気泡を十分に含んだ粉粒体流が
切断されるので、切断が容易に行なわれ、これにより粉
粒体流切断室への高圧空気の導入時期、したがつて弁の
開閉時期を制御することで栓状粉粒体の長さを正確にか
つ任意に制御することができるとともに、確実に粉粒体
流の切断が行なわれて、管底に粉粒体が残存するような
事態を回避することができる。したがつて短かい均一な
栓を作ることにより、栓状粉粒体の前後の差圧が小さく
なり、輸送に必要な圧力を低減させて必要な動力を減少
させることができる。また輸送管内に粉粒体の残存を回
避できることは輸送する粉粒体の種類を変える場合に、
輸送管を分解してその内面を清掃する手間を省略するこ
とができる。1) Since the granular material flow containing sufficient air bubbles is cut in the granular material flow cutting chamber, the cutting can be performed easily, and the timing of introducing high pressure air into the granular material flow cutting chamber depends on the timing. By controlling the opening and closing timing of the valve, the length of the plug-like powder and granular material can be accurately and arbitrarily controlled, and the powder and granular material flow is surely cut to ensure that the powder and granular material is Can be avoided. Therefore, by forming a short and uniform stopper, the pressure difference between the front and rear of the plug-like powder or granular material is reduced, and the pressure required for transportation can be reduced and the power required can be reduced. In addition, it is possible to avoid the remaining of granular material in the transport pipe when changing the type of granular material to be transported,
The trouble of disassembling the transport pipe and cleaning the inner surface thereof can be omitted.
２）エアナイフとして粉粒体流切断室にはストレーナが
省略されているので、ストレーナの目詰まりによるエア
ナイフ機能の低下を回避することができ、また、運転途
中において運転を中断してストレーナを清掃する必要が
なく、稼動率を上昇させることができる。2) Since the strainer is not provided in the particle flow cutting chamber as an air knife, it is possible to avoid the deterioration of the air knife function due to clogging of the strainer, and to suspend the operation during operation to clean the strainer. There is no need, and the operating rate can be increased.
３）粉粒体流切断室の中間部の径が増大しているので、
中間部への高圧空気の導入時では中間部からタンク側へ
粉粒体が押し戻されるのが抑制され、粉粒体が圧密状態
になるのが防止される。3) Since the diameter of the middle part of the granular material flow cutting chamber is increasing,
When high-pressure air is introduced into the intermediate portion, the powder or granular material is suppressed from being pushed back from the intermediate portion to the tank side, and the powder or granular material is prevented from becoming a compacted state.
第１図はこの考案の実施例の構成図、第２図は粉粒体流
切断室の詳細図、第３図及び第４図は粉粒体流切断室に
おける粉粒体の切断状況を説明する図、第５図はかくは
ん室の変形例を示す図、第６図は粉粒体流せん断室の変
形例を示す図、第７図は従来の栓状輸送装置の構成図、
第８図は第７図の粉粒体流切断室の詳細図、第９図は粉
粒体流の不完全な切断状態を示す図、第10図は粉粒体流
の完全な切断状態を示す図、第11図は従来の別の栓状輸
送装置の構成図である。 なお図において、 66……タンク 68……ホツパ部 70……かんはん室 72……ストレーナ 76……粉粒体流切断室 78……輸送管 94……エアレーシヨン用成形体 98,104……電磁弁 116……中間部 118……端部 である。FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a detailed view of a granular material flow cutting chamber, and FIGS. 3 and 4 are diagrams for explaining the cutting state of the granular material in the granular material flow cutting chamber. FIG. 5, FIG. 5 is a diagram showing a modified example of the stirring chamber, FIG. 6 is a diagram showing a modified example of the powdery particle flow shearing chamber, and FIG. 7 is a configuration diagram of a conventional plug-like transport device,
FIG. 8 is a detailed view of the granular material flow cutting chamber of FIG. 7, FIG. 9 is a diagram showing an incomplete cutting state of the granular material flow, and FIG. 10 is a complete cutting state of the granular material flow. FIG. 11 and FIG. 11 are configuration diagrams of another conventional plug-like transport device. In the figure, 66 ... Tank 68 ... Hopper part 70 ... Stirring chamber 72 ... Strainer 76 ... Granule flow cutting chamber 78 ... Transport pipe 94 ... Air race molding 98, 104 ... Solenoid valve 116 …… Middle part 118 …… End part.
Claims (1)
成したタンクと、多孔質材料から成り高圧空気を前記ホ
ツパ部内に導入するエアレーシヨン用成形体と、鉛直方
向へ延び上端において前記ホツパ部の下端に接続しかつ
半径方向外方向からストレーナを介して供給する高圧空
気により内部の粉粒体を流動化するかくはん室と、水平
方向へ延び一端を輸送管へ接続し他端を前記かくはん室
の下端へ接続し中間部の内径を両端部の内径より大きく
すると共に前記中間部に半径方向上方から高圧空気を供
給する粉粒体流切断室と、前記中間部と、前記エアレー
シヨン成形体及び前記かくはん室とへ高圧空気を間欠的
に交互に導く弁とを有していることを特徴とする粉粒体
の栓状輸送装置。1. A tank containing a granular material and having a funnel-shaped hopper at the bottom, a molded body for an air race, which is made of a porous material and introduces high-pressure air into the hopper, and a vertically extending upper end. A stirring chamber which is connected to the lower end of the hopper and which fluidizes the internal granular material by high-pressure air supplied from the outside in the radial direction through a strainer, and a horizontally extending one end which is connected to the transport pipe and the other end of which is A powder / granular flow cutting chamber which is connected to the lower end of the stirring chamber and has an inner diameter larger than the inner diameters of both ends, and supplies high pressure air to the intermediate portion from above in the radial direction, the intermediate portion, and the air-race molded body. And a plug-like transporting device for powdery or granular material, comprising a valve for intermittently and alternately introducing high-pressure air to the stirring chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985034156U JPH0716654Y2 (en) | 1985-03-12 | 1985-03-12 | Plug-like transport device for powder and granular material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985034156U JPH0716654Y2 (en) | 1985-03-12 | 1985-03-12 | Plug-like transport device for powder and granular material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61151925U JPS61151925U (en) | 1986-09-19 |
| JPH0716654Y2 true JPH0716654Y2 (en) | 1995-04-19 |
Family
ID=30537264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985034156U Expired - Lifetime JPH0716654Y2 (en) | 1985-03-12 | 1985-03-12 | Plug-like transport device for powder and granular material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716654Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008524088A (en) * | 2004-12-17 | 2008-07-10 | シエル・インターナシヨネイル・リサーチ・マーチヤツピイ・ベー・ウイ | Pipe parts for conveying solid granular materials |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS494914A (en) * | 1972-04-26 | 1974-01-17 | ||
| JPS58144530A (en) * | 1982-02-22 | 1983-08-27 | 日本電信電話株式会社 | Surge absorbing circuit for communication system |
| JPS5931212A (en) * | 1982-08-11 | 1984-02-20 | Sanko Kuki Sochi Kk | Pneumatic transport apparatus in high density and at low speed which can be oscillated |
-
1985
- 1985-03-12 JP JP1985034156U patent/JPH0716654Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61151925U (en) | 1986-09-19 |
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