JPH0411444B2 - - Google Patents
Info
- Publication number
- JPH0411444B2 JPH0411444B2 JP59016968A JP1696884A JPH0411444B2 JP H0411444 B2 JPH0411444 B2 JP H0411444B2 JP 59016968 A JP59016968 A JP 59016968A JP 1696884 A JP1696884 A JP 1696884A JP H0411444 B2 JPH0411444 B2 JP H0411444B2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- screw conveyor
- pressure vessel
- tip
- pressure
- 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
Links
- 239000000843 powder Substances 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 29
- 238000005192 partition Methods 0.000 description 4
- 238000011002 quantification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
- B65G53/08—Gas pressure systems operating without fluidisation of the materials with mechanical injection of the materials, e.g. by screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screw Conveyors (AREA)
- Air Transport Of Granular Materials (AREA)
Description
【発明の詳細な説明】
本発明は、コンクリートの吹付工事において生
コンクリートに混合する急結粉剤（粉体急結剤）
を、圧縮空気で管内輸送する装置に関する。[Detailed Description of the Invention] The present invention is a quick-setting agent (powder quick-setting agent) that is mixed into fresh concrete during concrete spraying work.
This invention relates to a device for transporting water in a pipe using compressed air.
従来、この種の装置としては、急結粉剤を収容
する容器の底部に輸送管への送出口を設け、一定
量が入る落下孔を有する回転体を該底部に枢支し
て、それを回転させることによりその落下孔が送
出口と合致したとき、落下孔に入つている粉剤を
送出口に落下させ圧縮空気に混合して輸送管によ
り供給するようにした装置が知られている。 Conventionally, in this type of device, an outlet to a transport pipe is provided at the bottom of a container containing an quick-setting agent, and a rotating body having a drop hole into which a certain amount of powder can enter is pivoted to the bottom and rotated. There is known an apparatus in which, when the drop hole matches the delivery port, the powder contained in the drop hole is dropped into the delivery port, mixed with compressed air, and supplied through a transport pipe.
しかし、これは、回転体の回転に応じて粉剤が
間欠的に供給されるために、粉剤を一定量連続し
て供給できないとともに供給量の調節が困難であ
るばかりか、粉剤が落下孔に詰まり易い欠点があ
つた。 However, since the powder is supplied intermittently according to the rotation of the rotating body, it is not possible to continuously supply a fixed amount of powder and it is difficult to adjust the supply amount, and the powder may clog the drop hole. There was a simple flaw.
また、粉剤を収容する容器内の上部にスクリユ
ーコンベヤを設け、同じく容器内に軸支した撹拌
羽根でかき上げた粉剤をこのスクリユーコンベヤ
に落として混合ケースに給送し、圧縮空気と混合
して管内輸送するようにした装置が知られている
が、これは、粉剤をかき上がる撹拌羽根が大型な
ため大きな駆動力を必要とし、かつその回転によ
る振動も大きいとともに、圧縮空気の圧力により
粉剤がスクリユーコンベヤを介して容器内に逆流
して供給量が安定しない欠点があつた。 In addition, a screw conveyor is installed at the top of the container that houses the powder, and the powder is stirred up by stirring blades that are also pivotally supported in the container, and is dropped onto this screw conveyor, fed to the mixing case, and mixed with compressed air. There is a known device in which the powder is transported inside a pipe, but this requires a large driving force because the stirring blades that stir up the powder are large, and the vibration caused by the rotation is also large, and the pressure of the compressed air is There was a drawback that the powder agent flowed back into the container via the screw conveyor, making the supply amount unstable.
本発明定量供給装置は、このような欠点を解消
することを目的に提案されたもので、その要旨は
次のとおりである。 The quantitative feeding device of the present invention was proposed with the aim of eliminating such drawbacks, and the gist thereof is as follows.
上部に投入口を有する圧力容器が、スクリユー
コンベヤを内装した底体上に、互いの連通開口
を、該連通開口内に何等の送給機構も装架するこ
となく単に上下に連通させて乗載している。 A pressure vessel having an input port at the top is mounted on a bottom body containing a screw conveyor by simply connecting the communication openings vertically to each other without installing any feeding mechanism in the communication openings. It is listed.
先端に輸送管を接続したノズルが、上記底体の
外側に連結設置している。 A nozzle with a transport pipe connected to its tip is connected and installed on the outside of the bottom body.
上記スクリユーコンベヤは、その軸の基部に取
り付けた複数個の撹拌羽根を上記連通開口に対向
させるとともに、螺旋状の羽根を有する該軸の先
端を上記ノズルに突入位置させている。 The screw conveyor has a plurality of stirring blades attached to the base of its shaft facing the communication opening, and a tip of the shaft having spiral blades is positioned to protrude into the nozzle.
また、上記先端を被覆する円筒形のケーシング
が、上記ノズル内にその内周面との間に環状の空
処を形成して位置し、ノズルの上記ケーシング対
向部位に、円周方向に所要の間隔をおいて複数個
の圧縮空気の給気孔を設けるとともに、同じくノ
ズルの上記ケーシング対向部位であつてかつ上記
給気孔より前方位置に該給気孔より径の大きい通
気孔を設けている。 Further, a cylindrical casing that covers the tip is located within the nozzle, forming an annular cavity between the inner circumferential surface of the nozzle, and a cylindrical casing that covers the tip of the nozzle. A plurality of air supply holes for compressed air are provided at intervals, and a ventilation hole having a larger diameter than the air supply hole is also provided at a portion of the nozzle facing the casing and at a position in front of the air supply hole.
さらに、このノズルの通気孔と圧力容器の上面
に設けた通気孔とをホースで接続することによ
り、ノズルと圧力容器とを連通して連通してい
る。 Furthermore, the nozzle and the pressure vessel are communicated with each other by connecting the ventilation hole of the nozzle and the ventilation hole provided on the upper surface of the pressure vessel with a hose.
以下には図示の実施例について詳述する。 The illustrated embodiment will be described in detail below.
１はコンクリートの急結粉剤を収容する圧力容
器で、上部に気密な蓋（図示していない）を備え
た投入口２を有する。 Reference numeral 1 denotes a pressure vessel containing a concrete quick-setting agent, and has an inlet 2 equipped with an airtight lid (not shown) at the top.
１′は後記スクリユーコンベヤＡを内装した底
体で、上記圧力容器１は底板１′上に、互いの連
通開口を連通させて乗載している。 Reference numeral 1' denotes a bottom body incorporating a screw conveyor A to be described later, and the pressure vessel 1 is mounted on the bottom plate 1' with their communication openings communicating with each other.
該連通開口は単に上下に連通しているだけであ
つて、その中に特に送給機構を装架するようなこ
とはしていない。 The communication opening simply communicates with the top and bottom, and no particular feeding mechanism is mounted therein.
３は先端に輸送管５を接続したノズルで、上記
底体１′の外側に筒形の送出口体４を介し水平に
取り取けられている。 Reference numeral 3 designates a nozzle having a transport pipe 5 connected to its tip, which is installed horizontally on the outside of the bottom body 1' via a cylindrical outlet body 4.
６は送出口体４の内側に設けた仕切板で、その
一側部を送出口体４の内端下周に水平に取り付
け、他側部を下方に傾斜させて端縁を底板１′の
底面に固着している。 Reference numeral 6 denotes a partition plate provided inside the outlet body 4. One side of the partition plate is attached horizontally to the lower periphery of the inner end of the outlet body 4, and the other side is inclined downward so that the edge is attached to the bottom plate 1'. It's stuck to the bottom.
Ａはスクリユーコンベヤで、軸７の略中央から
先端にわたつて螺旋状の羽根８を設け、この軸７
の羽根８を設けていない基部のところには攪拌羽
根９，１０，１１を取り付けている。 A is a screw conveyor, in which a spiral blade 8 is provided extending from the approximate center of the shaft 7 to the tip.
Stirring blades 9, 10, and 11 are attached to the base where the blade 8 is not provided.
スクリユーコンベヤＡは、底板１′の底部の送
出口体４に対向するところに設けた軸受体１２に
軸７の基端部を回転自在に軸支して水平に支承
し、羽根８の部分を仕切板６の上方と送出口体４
及びノズル３内にわたつて位置させている。 The screw conveyor A has a base end of a shaft 7 rotatably supported horizontally on a bearing body 12 provided at the bottom of the bottom plate 1' opposite to the outlet body 4. above the partition plate 6 and the outlet body 4
and is positioned across the nozzle 3.
また、前記攪拌羽根９，１０，１１は、上記連
通開口に対向する位置に、掻き角度が少しく傾斜
した状態に取り付けられていて、攪拌羽根９が仕
切板６の傾斜面の上方で、攪拌羽根１１が軸受体
１２の側方至近位置で、攪拌羽根１０がこれら攪
拌羽根９，１１の間のところでそれぞれ回転し、
急結粉剤を攪拌しながら羽根８の方に送り込むよ
うになつている。 Further, the stirring blades 9, 10, and 11 are attached at positions facing the communication openings with slightly inclined scratching angles, and the stirring blades 9 are mounted above the inclined surface of the partition plate 6. 11 is a position close to the side of the bearing body 12, and the stirring blade 10 rotates between these stirring blades 9 and 11, respectively.
The rapid setting agent is fed into the blade 8 while being stirred.
１３はスクリユーコンベヤＡのノズル３内に位
置する先端部分に嵌合したケーシングで、それ
は、先端下半周部を切欠した円筒形をなし、基端
を送出口体４に固定して水平に支承してあり、先
端がスクリユーコンベヤＡの先端よりも少し先方
に位置し、このケーシング１３の外周面とノズル
３の内周面の間に環状の空処が設けられている。 Reference numeral 13 denotes a casing fitted to the tip located inside the nozzle 3 of the screw conveyor A. It has a cylindrical shape with the lower half circumference of the tip cut out, and the base end is fixed to the outlet body 4 and supported horizontally. The tip of the screw conveyor A is positioned slightly ahead of the tip of the screw conveyor A, and an annular cavity is provided between the outer circumferential surface of the casing 13 and the inner circumferential surface of the nozzle 3.
１４はスクリユーコンベヤＡを回転させるモー
タで、底板１′の外側至近位置に設置している。 Reference numeral 14 denotes a motor for rotating the screw conveyor A, which is installed close to the outside of the bottom plate 1'.
１５，１６は、ノズル３のケーシング１３に対
向する上下対称位置に、すなわち、ケーシング１
３の円周方向に所要の間隔をおいた位置に設けた
給気孔で、それぞれホースによりエアコンプレツ
サ（図示していない）に接続してノズル３内に圧
縮空気を送給するようになつている。 15 and 16 are vertically symmetrical positions facing the casing 13 of the nozzle 3, that is, the casing 1
Air supply holes provided at required intervals in the circumferential direction of the nozzle 3 are connected to an air compressor (not shown) through hoses to supply compressed air into the nozzle 3. There is.
１７は、同じくケーシング１３に対向する位置
であつてかつ上記各給気孔１５，１６より前方位
置においてノズル３に設置した通気孔で、この通
気孔１７の径は給気孔１５，１６の径より大きく
設定されている。 17 is a ventilation hole installed in the nozzle 3 at a position facing the casing 13 and in front of each of the air supply holes 15 and 16, and the diameter of this ventilation hole 17 is larger than the diameter of the air supply holes 15 and 16. It is set.
１９は、通気孔１７と圧力容器１の上面の通気
孔１８とを接続したホースである。 A hose 19 connects the ventilation hole 17 and the ventilation hole 18 on the top surface of the pressure vessel 1.
したがつて、ノズル３内、さらに具体的にはケ
ーシング１３の外側に形成されている環状の空処
が、給気孔１５，１６の前方の通気孔１７を介し
て、圧力容器１内の上部空間と連通し、たがいの
圧力が常に自動的に均衡するようになつている。 Therefore, the annular space formed inside the nozzle 3, more specifically on the outside of the casing 13, is connected to the upper space inside the pressure vessel 1 through the ventilation hole 17 in front of the air supply holes 15 and 16. They communicate with each other, and the pressure between them is always automatically balanced.
吹付工事に際し、圧力容器１内に収容した急結
粉剤を輸送管５で輸送し生コンクリートに混合す
るときには、スクリユーコンベヤＡを回転させな
がら圧縮空気を給気孔１５，１６からノズル３内
に送給すると、スクリユーコンベヤＡによつてノ
ズル３内に送給された急結粉剤が圧縮空気に混合
されて輸送管５内に入り、この管内を輸送されて
生コンクリートに混合して吹き付けられるもので
ある。 During spraying work, when the quick-setting agent contained in the pressure vessel 1 is transported by the transport pipe 5 and mixed with fresh concrete, compressed air is sent into the nozzle 3 from the air supply holes 15 and 16 while rotating the screw conveyor A. When the powder is supplied, the quick-setting agent fed into the nozzle 3 by the screw conveyor A is mixed with compressed air and enters the transport pipe 5, and is transported through this pipe and mixed with the ready-mixed concrete and sprayed. It is.
一般に、急結粉剤は、吸湿性が強く固まり易い
ものであるが、攪拌羽根９〜１１により攪拌され
ながら羽根８の方に送り込まれるから固まること
なく、ノズル３に円滑かつ確実に送給される。 In general, the quick-setting agent is highly hygroscopic and tends to harden, but since it is fed toward the blade 8 while being stirred by the stirring blades 9 to 11, it does not harden and is smoothly and reliably fed to the nozzle 3. .
また、給気孔１５，１６がケーシング１３に対
向していて、そこから吹き出る圧縮空気が羽根８
により送られている急結粉剤に直接当たることな
く、そのケーシング１３に沿つてノズル３の前方
に流れる。 In addition, the air supply holes 15 and 16 face the casing 13, and the compressed air blown out from there flows into the blade 8.
It flows along the casing 13 to the front of the nozzle 3 without directly hitting the rapid setting agent being sent by the casing 13.
したがつて、スクリユーコンベヤＡで圧送され
た急結粉剤のノズル３前方への送給はスムーズに
しかも確実に行われる。 Therefore, the rapid powder setting agent force-fed by the screw conveyor A is smoothly and reliably fed to the front of the nozzle 3.
また、この送給により圧力容器１内の急結粉剤
が減つてその上部空間の圧力が下がるのにともな
い、該上部空間には、ノズル３内さらに具体的に
はケーシング１３が形成する空処内の圧縮空気が
通気孔１７、ホース１９を通じて絶えず供給され
る。 In addition, as the rapid setting agent in the pressure vessel 1 is reduced by this feeding and the pressure in the upper space is lowered, the upper space is filled with the inside of the nozzle 3, more specifically, the air space formed by the casing 13. Compressed air is constantly supplied through the vent hole 17 and hose 19.
換言すると、エアコンプレツサーから送給され
た圧縮空気は、給気孔１５，１６からケーシング
１３の外側の環状の空処に入り、通気孔１７およ
びスクリユーコンベヤＡの先端部におけるやや減
圧した状態で、圧力容器１に貯留している急結粉
剤にも作用することになる。すなわち、ケーシン
グ１３の外側の環状の空処前側部分すなわちスク
リユーコンベヤＡの先端部の圧力と圧力容器１の
上部空間の圧力とが常に均衡するように設定して
ある。 In other words, the compressed air sent from the air compressor enters the annular space outside the casing 13 through the air supply holes 15 and 16, and is in a slightly reduced pressure state at the ventilation hole 17 and the tip of the screw conveyor A. This also acts on the quick-setting agent stored in the pressure vessel 1. That is, the pressure at the outer annular space front side portion of the casing 13, that is, the tip of the screw conveyor A, and the pressure in the upper space of the pressure vessel 1 are set so as to be always balanced.
したがつて、スクリユーコンベヤＡによる急結
粉剤の送給量は、貯留している急結粉剤に作用す
る圧力容器１の上部空間とノズル３の環状空処前
側部分すなわちスクリユーコンベヤＡの先端部と
の圧力差に影響されるようなことなく、該スクリ
ユーコンベヤＡの回転を制御するだけで連続的か
つ確実に定量化できるものである。 Therefore, the amount of the rapid setting agent fed by the screw conveyor A is determined by the upper space of the pressure vessel 1 which acts on the stored quick setting agent and the front part of the annular space of the nozzle 3, that is, the tip of the screw conveyor A. Quantification can be carried out continuously and reliably by simply controlling the rotation of the screw conveyor A without being affected by the pressure difference between the screw conveyor A and the screw conveyor A.
この場合、ノズル３側さらに正確にはスクリユ
ーコンベヤＡの先端部の圧力と圧力容器１の上部
空間の圧力とが常に均衡していることにより急結
粉剤が逆流するようなこともない。 In this case, because the pressure on the nozzle 3 side, or more precisely, the pressure at the tip of the screw conveyor A and the pressure in the upper space of the pressure vessel 1 are always balanced, there is no possibility that the rapid setting agent will flow back.
この点、例えば、圧力容器１側とノズル３側と
に同じ供給源からの圧縮空気を直接供給して同じ
圧力を作用させた場合には、ノズル３側だけが外
部放出があるために圧力容器１側に比べ低圧にな
り、両者間には常に圧力差を生じることになるも
のであるが、通常において急結粉剤は、比重が例
えば0.8というように小さく、小さな圧力差にも
敏感に挙動するので、スクリユーコンベヤＡの回
転を制御するだけでは継続的かつ確実な定量化を
困難にし、また、かかる圧力差は逆流の原因にも
なる。 In this respect, for example, if compressed air from the same source is directly supplied to the pressure vessel 1 side and the nozzle 3 side and the same pressure is applied, only the nozzle 3 side has external discharge, so the pressure vessel The pressure will be lower than that on the first side, and a pressure difference will always occur between the two sides, but quick setting agents usually have a small specific gravity of 0.8, for example, and behave sensitively to small pressure differences. Therefore, simply controlling the rotation of the screw conveyor A makes continuous and reliable quantification difficult, and such a pressure difference also causes backflow.
さらに、上記のとおり圧力容器１の通気孔１８
とホース１９で接続する通気孔１７を、ケーシン
グ１３に対向する位置でかつ各給気孔１５，１６
より前方位置に設置しているので、通気孔１７に
おける圧縮空気の圧力は微小ではあるが供給元圧
より低くなり、圧力容器１の上部空間も同圧にな
るものであるが、反対に、給気孔１５，１６の後
方位置に径の大きい通気孔１７を設けることはス
ペースの確保が難しいとともに、当該部分があま
りにも狭小なためにその通気孔１７での圧力を低
くすることができない不利があり、実用的ではな
い。 Furthermore, as described above, the vent hole 18 of the pressure vessel 1
The ventilation hole 17 connected with the hose 19 is located at a position facing the casing 13 and connected to each of the air supply holes 15 and 16.
Since the compressed air is installed at a more forward position, the pressure of the compressed air in the vent hole 17 is slightly lower than the supply source pressure, and the upper space of the pressure vessel 1 is also at the same pressure. Providing a large-diameter vent hole 17 at a position behind the air holes 15 and 16 has the disadvantage that it is difficult to secure space and that the pressure in the vent hole 17 cannot be lowered because the area is too narrow. , not practical.
以上述べたところから明らかなように、本発明
によれば次の効果を奏する。 As is clear from the above description, the present invention provides the following effects.
急結粉剤は、スクリユーコンベヤの基部に設け
た攪拌羽根で攪拌されながら送給され、一般的に
吸湿性が強く固まり易い急結粉剤であつても、特
に固まつてしまうようなことなく、円滑かつ確実
に供給できるとともに、圧力容器と底体を連通す
る互いの連通開口が、単に上下に連通し、そこに
何等の送給機構も装架していないから、圧力容器
内の急結粉剤は何物にも遮られることなく、スク
リユーコンベヤに向け正確に連続供給される。 The quick-setting agent is fed while being stirred by a stirring blade installed at the base of the screw conveyor, and even if the quick-setting agent is generally highly hygroscopic and tends to harden, it will not harden. In addition to being able to supply the powder smoothly and reliably, the communication openings that communicate the pressure vessel and the bottom body are simply vertically connected, and no feeding mechanism is installed there. is accurately and continuously fed to the screw conveyor without being obstructed by anything.
給気孔がケーシングに対向していて、そこから
吹き出る圧縮空気がスクリユーコンベヤの羽根８
により送られている急結粉剤に直接当たることな
く、そのケーシングに沿つてノズルの前方に流
れ、したがつて、スクリユーコンベヤで圧送され
た急結粉剤のノズル前方への送給はスムーズにし
かも確実に行われる。 The air supply hole faces the casing, and the compressed air blown out from there is connected to the screw conveyor blade 8.
It flows along the casing to the front of the nozzle without directly hitting the quick setting agent being fed by the screw conveyor. Therefore, the quick setting agent forced by the screw conveyor can be smoothly fed to the front of the nozzle. It will definitely be done.
この送給により圧力容器内の急結粉剤が減つて
上部空間の圧力が下がるのにともない、その上部
空間には、上記通気孔からの圧縮空気がノズルを
介して絶えず供給され、貯留している急結粉剤に
作用するノズル側の圧力と圧力容器の上部空間の
圧力とが常に均衡する。 As a result of this feeding, the rapid setting agent in the pressure vessel is reduced and the pressure in the upper space is lowered, and compressed air from the vent hole is constantly supplied through the nozzle and stored in the upper space. The pressure on the nozzle side that acts on the quick setting agent and the pressure in the upper space of the pressure vessel are always balanced.
換言すると、圧縮空気は、給気孔からケーシン
グの外側の環状の空処に入り、通気孔およびスク
リユーコンベヤの先端部におけるやや減圧した状
態で、圧力容器に貯留している急結粉剤にも作用
することになり、ケーシングの外側の環状の空処
前側部分すなわちスクリユーコンベヤの先端部の
圧力と圧力容器の上部空間の圧力とが常に均衡す
る。 In other words, the compressed air enters the annular cavity on the outside of the casing from the air supply hole, and acts on the rapid setting agent stored in the pressure vessel under a slightly reduced pressure at the air hole and the tip of the screw conveyor. As a result, the pressure at the outer annular cavity front side portion of the casing, that is, the tip of the screw conveyor, and the pressure in the upper space of the pressure vessel are always balanced.
したがつて、スクリユーコンベヤによる急結粉
剤の送給量は、貯留している急結粉剤に作用する
圧力容器側とノズル側との圧力差に影響されるこ
となく、すなわち、該スクリユーコンベヤの回転
を制御する簡単な操作だけで、連続的にしかも確
実に定量化できるものである。 Therefore, the amount of rapid setting agent fed by the screw conveyor is not affected by the pressure difference between the pressure vessel side and the nozzle side, which acts on the stored quick setting agent. It can be quantified continuously and reliably by simply controlling the rotation of the .
上記のように、貯留している急結粉剤に作用す
るノズル側の圧力と圧力容器の上部空間の圧力と
が常に均衡することにより、急結粉剤が逆流する
ようなこともない。 As mentioned above, since the pressure on the nozzle side acting on the stored quick-setting agent and the pressure in the upper space of the pressure vessel are always balanced, there is no possibility that the quick-setting agent will flow back.
上記において、圧力容器の通気孔とホースで接
続するノズルの通気孔を、ケーシングに対向する
位置であつてかつ給気孔より前方位置に該給気孔
より径を大きくして設置しているので、その通気
孔における圧縮空気の圧力は微小ではあるが供給
元圧より低くなり、かつ上記のように圧力容器の
上部空間を常に同圧にすることができるものであ
つて、反対に、給気孔の後方位置に径の大きい通
気孔を設けることはスペースの確保が難しいとと
もに、その通気孔での圧力を低くすることができ
ないというような不利を招くことがないものであ
る。 In the above, the vent hole of the nozzle, which is connected to the vent hole of the pressure vessel with a hose, is installed in a position facing the casing and in front of the air supply hole, with a diameter larger than that of the air supply hole. Although the pressure of the compressed air in the vent hole is small, it is lower than the supply source pressure, and as mentioned above, the pressure in the upper space of the pressure vessel can always be kept at the same pressure. Providing a vent hole with a large diameter at a location makes it difficult to secure space and does not cause disadvantages such as not being able to lower the pressure in the vent hole.
圧力容器の内部圧力が何等かの原因で高低に変
動しても、急結粉剤の定量供給を持続できる。 Even if the internal pressure of the pressure vessel fluctuates high or low for some reason, the constant supply of the rapid setting agent can be maintained.
図面は本発明の実施例を示し、第１図は側面
図、第２図は要部の縦断面図である。
２……投入口、１……圧力容器、１′……底体、
５……輸送管、３……ノズル、Ａ……スクリユー
コンベヤ、９〜１１……攪拌羽根、１３……ケー
シング、１５，１６……給気孔、１７，１８……
連通孔、１９……ホース。
The drawings show an embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a longitudinal sectional view of the main part. 2...Inlet, 1...Pressure vessel, 1'...Bottom body,
5... Transport pipe, 3... Nozzle, A... Screw conveyor, 9-11... Stirring blade, 13... Casing, 15, 16... Air supply hole, 17, 18...
Communication hole, 19...hose.
Claims (1)
ーコンベヤを内装した底体上に、互いの連通開口
を、該連通開口内に何等の送給機構も装架するこ
となく単に上下に連通させて乗載し、先端に輸送
管を接続したノズルが、上記底体の外側に連結設
置され、上記スクリユーコンベヤは、その軸の基
部に取り付けた複数個の撹拌羽根を上記連通開口
に対向させるとともに、螺旋状の羽根を有する該
軸の先端を上記ノズルに突入位置させ、かつ、上
記先端を被覆する円筒形のケーシングが、上記ノ
ズル内にその内周面との間に環状の空処を形成し
て位置し、ノズルの上記ケーシング対向部位に、
円周方向に所要の間隔をおいて複数個の圧縮空気
の給気孔を設けるとともに、同じくノズルの上記
ケーシング対向部位であつて上記給気孔より前方
位置に該給気孔より径の大きい通気孔を設け、そ
の通気孔と圧力容器の上面に設けた通気孔とをホ
ースで接続することにより、ノズルと圧力容器と
を連通してなることを特徴とするコンクリート用
急結粉剤の定量供給装置。1. A pressure vessel having an input port at the top is simply connected vertically with the communication openings of the bottom body containing the screw conveyor without installing any feeding mechanism in the communication openings. A nozzle mounted on the screw conveyor with a transport pipe connected to its tip is connected and installed on the outside of the bottom body, and the screw conveyor has a plurality of stirring blades attached to the base of its shaft facing the communication opening. , a tip of the shaft having a spiral blade is placed in a position protruding into the nozzle, and a cylindrical casing covering the tip forms an annular cavity in the nozzle between the inner peripheral surface thereof and the tip thereof. and located at the part of the nozzle facing the above casing,
A plurality of compressed air supply holes are provided at required intervals in the circumferential direction, and a ventilation hole having a larger diameter than the air supply hole is also provided at a position facing the casing of the nozzle and in front of the air supply hole. , A quantitative supply device for quick-setting powder for concrete, characterized in that the nozzle and the pressure vessel are communicated by connecting the ventilation hole and the ventilation hole provided on the upper surface of the pressure vessel with a hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1696884A JPS60161814A (en) | 1984-02-03 | 1984-02-03 | Device for feeding powder-like material in fixed amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1696884A JPS60161814A (en) | 1984-02-03 | 1984-02-03 | Device for feeding powder-like material in fixed amount |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60161814A JPS60161814A (en) | 1985-08-23 |
| JPH0411444B2 true JPH0411444B2 (en) | 1992-02-28 |
Family
ID=11930888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1696884A Granted JPS60161814A (en) | 1984-02-03 | 1984-02-03 | Device for feeding powder-like material in fixed amount |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60161814A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4546694B2 (en) * | 2002-09-20 | 2010-09-15 | 株式会社オーイケ | Side groove block |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06278864A (en) * | 1993-03-31 | 1994-10-04 | Kubota Corp | Mix-in device of pneumatic conveying facility |
| EP0707931A3 (en) * | 1994-10-18 | 1996-10-30 | Putzmeister Maschf | Device for the pneumatic transport of dry, bulk materials |
| JP3377458B2 (en) * | 1998-12-14 | 2003-02-17 | 東急建設株式会社 | Jacago-like structure manufacturing equipment |
| JP2002096930A (en) * | 2000-09-20 | 2002-04-02 | Nippon Parkerizing Co Ltd | Powder fixed quantity supply device |
| JP4953115B2 (en) * | 2005-04-11 | 2012-06-13 | 一男 三戸 | Powder discharge mechanism |
| WO2008089710A1 (en) * | 2007-01-26 | 2008-07-31 | Schenck Process, S.R.O. | A device for administration of compressible materials into pneumatic transport system namely pipeline, the method of such administration to transport material, compression and usage |
| CN102807086A (en) * | 2012-08-13 | 2012-12-05 | 江苏三环实业股份有限公司 | Seal conveying negative-pressure effect device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5297508A (en) * | 1976-02-12 | 1977-08-16 | Hitachi Ltd | Anchoring tool of insulating air insulating tube for automobile |
| JPS5297580A (en) * | 1976-02-09 | 1977-08-16 | Mitsusaku Nakano | Constant quantity feeder |
| JPS5520677U (en) * | 1978-07-29 | 1980-02-08 | ||
| JPS5540196U (en) * | 1978-09-08 | 1980-03-14 | ||
| JPS5628714A (en) * | 1979-08-20 | 1981-03-20 | Tokico Ltd | Locking chair |
-
1984
- 1984-02-03 JP JP1696884A patent/JPS60161814A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5297580A (en) * | 1976-02-09 | 1977-08-16 | Mitsusaku Nakano | Constant quantity feeder |
| JPS5297508A (en) * | 1976-02-12 | 1977-08-16 | Hitachi Ltd | Anchoring tool of insulating air insulating tube for automobile |
| JPS5520677U (en) * | 1978-07-29 | 1980-02-08 | ||
| JPS5540196U (en) * | 1978-09-08 | 1980-03-14 | ||
| JPS5628714A (en) * | 1979-08-20 | 1981-03-20 | Tokico Ltd | Locking chair |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4546694B2 (en) * | 2002-09-20 | 2010-09-15 | 株式会社オーイケ | Side groove block |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60161814A (en) | 1985-08-23 |
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