JPH0958840A - Powder feeder - Google Patents
Powder feederInfo
- Publication number
- JPH0958840A JPH0958840A JP23914495A JP23914495A JPH0958840A JP H0958840 A JPH0958840 A JP H0958840A JP 23914495 A JP23914495 A JP 23914495A JP 23914495 A JP23914495 A JP 23914495A JP H0958840 A JPH0958840 A JP H0958840A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- screw conveyor
- discharge port
- supply pipe
- hopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Screw Conveyors (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、セメント等の各種
の粉体を圧縮空気を利用して圧送するのに使用される粉
体の供給装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder supply device used for pressure-feeding various powders such as cement using compressed air.
【０００２】[0002]
【従来の技術】従来、粉体の供給装置として例えば図５
に示されるようなものが有る。該粉体の供給装置は、各
種の建物等を構築するために地盤を改良する場合、セメ
ントサイロのセメントを土壌中へ供給するのに使用され
る。すなわち、セメントサイロ（図示せず。）から導出
された送出管１００が二又に分岐され、各分岐管１０１
ａ，１０１ｂの下端に上部開閉弁１０２ａ，１０２ｂを
介して固化材であるセメントを一時貯留するタンク１０
３ａ，１０３ｂがそれぞれ接続される。そして、各タン
ク１０３ａ，１０３ｂの下端から延設される引出管１０
４ａ，１０４ｂは地盤の改良地に固化材を供給するため
の供給管１０５に接続されている。１０６ａ，１０６ｂ
は各タンク１０３ａ，１０３ｂの下端に取着される下部
開閉弁、１０７は前記供給管１０５の基端部に接続さ
れ、固化材を圧送するためのコンプレッサである。2. Description of the Related Art Conventionally, for example, FIG.
There is something like that shown in. The powder feeder is used to feed cement from a cement silo into soil when improving the ground to construct various buildings and the like. That is, the delivery pipe 100 led out from the cement silo (not shown) is bifurcated into two branch pipes 101.
a tank 101 for temporarily storing cement, which is a solidifying material, at the lower ends of a and 101b through upper opening / closing valves 102a and 102b
3a and 103b are respectively connected. Then, the withdrawal pipe 10 extending from the lower ends of the tanks 103a and 103b.
4a and 104b are connected to a supply pipe 105 for supplying the solidifying material to the improved ground. 106a, 106b
Is a lower opening / closing valve attached to the lower ends of the tanks 103a and 103b, and 107 is a compressor connected to the base end of the supply pipe 105 for pumping the solidified material.
【０００３】そこで、まず各上部開閉弁１０２ａ，１０
２ｂを開けると共に下部開閉弁１０６ａ，１０６ｂを閉
じて、両タンク１０３ａ，１０３ｂ内に固化材を充填す
る。次に、両上部開閉弁１０２ａ，１０２ｂを共に閉
め、一方のタンク１０３ａの下部開閉弁１０６ａを開
け、その中の固化材を供給管１０５内に導くと共にコン
プレッサ１０７で圧送する。前記タンク１０３ａが空に
なれば、その下部開閉弁１０６ａを閉じ他方のタンク１
０３ｂの下部開閉弁１０６ｂを開けて前記と同様にコン
プレッサ１０７で固化材を圧送する。一方、前記空のタ
ンク１０３ａには上部開閉弁１０２ａを開いてセメント
サイロから固化材を充填する。以後各上下部開閉弁１０
２ａ，１０２ｂ，１０６ａ，１０６ｂの同様な切替動作
を行い固化材の圧送を行うようにしている。Therefore, first, the upper opening / closing valves 102a, 102
2b is opened and the lower opening / closing valves 106a and 106b are closed to fill both tanks 103a and 103b with the solidifying material. Next, both upper opening / closing valves 102a and 102b are closed, the lower opening / closing valve 106a of one tank 103a is opened, and the solidified material therein is introduced into the supply pipe 105 and pressure-fed by the compressor 107. When the tank 103a becomes empty, the lower opening / closing valve 106a is closed and the other tank 1
The lower opening / closing valve 106b of 03b is opened, and the solidified material is pressure-fed by the compressor 107 as described above. On the other hand, the empty tank 103a is filled with the solidifying material from the cement silo by opening the upper opening / closing valve 102a. After that, each on-off valve 10
The same switching operation of 2a, 102b, 106a, and 106b is performed to pressure-feed the solidified material.
【０００４】[0004]
【発明が解決しようとする課題】このように、従来の粉
体の供給装置では２基のタンク１０３ａ，１０３ｂを配
備せねばならないことから、設備が大型化して設備費が
嵩むばかりか、各タンク１０３ａ，１０３ｂの上下部開
閉弁１０２ａ，１０２ｂ，１０６ａ，１０６ｂをそれぞ
れ切替して供給管１０５に固化材を導くようにしている
ので、作業を途中で一旦止めねばならず面倒となり作業
性が悪いという課題が有った。そこで、本発明は上記課
題を解決すべくなされたもので、設備を簡素化してコス
トの低減を図ると共に、供給管へセメントを連続供給で
きるようにして作業性を向上し得る粉体の供給装置を提
供することを目的とするものである。As described above, since two tanks 103a and 103b have to be provided in the conventional powder feeding apparatus, not only the equipment becomes large and the equipment cost increases, but also each tank Since the upper and lower opening / closing valves 102a, 102b, 106a, 106b of 103a, 103b are respectively switched to guide the solidified material to the supply pipe 105, the work must be stopped once during the work, which is troublesome and the workability is poor. There were challenges. Therefore, the present invention has been made to solve the above-described problems, and simplifies the equipment to reduce the cost, and also enables the continuous supply of cement to the supply pipe to improve the workability of the powder supply device. It is intended to provide.
【０００５】[0005]
【課題を解決するための手段】かかる目的を達成するた
めに本発明の粉体の供給装置は、一個のタンクで形成さ
れる粉体ホッパーの底部にスクリューコンベヤを内装し
た送出管路を設け、該送出管路はその先端の排出口を介
して供給管に連通してなり、スクリューコンベヤの終端
と排出口との間に所要長さの空間領域を形成して、スク
リューコンベヤで搬送した粉体をその空間領域内で栓状
に滞留させるようにする。これにより、滞留した粉体が
恰も送出管路を閉塞する栓の役目をなし、供給管内の圧
縮空気が粉体ホッパー側へ逆流することがなく、しかも
スクリューコンベヤの駆動により栓状に滞留する固化材
は順次押されて排出口から連続して供給管へ導かれる。In order to achieve the above object, the powder supply apparatus of the present invention is provided with a delivery pipe line having a screw conveyor installed at the bottom of a powder hopper formed by one tank. The delivery pipe line communicates with the supply pipe through a discharge port at its tip, forms a space region of a required length between the end of the screw conveyor and the discharge port, and the powder conveyed by the screw conveyor. Is made to stay like a plug in the space area. As a result, the accumulated powder also functions as a plug that blocks the delivery pipe line, the compressed air in the supply pipe does not flow back to the powder hopper side, and is solidified by driving the screw conveyor in the form of a plug. The materials are sequentially pushed and continuously guided from the discharge port to the supply pipe.
【０００６】また、排出口に外から操作し得る準備蓋を
開閉自在に装着し、該準備蓋を閉じて空間領域に固化材
が栓状に滞留されるようにする。このように外から操作
することにより作業の容易化が図られる。Further, a preparation lid which can be operated from the outside is attached to the discharge port so as to be openable and closable, and the preparation lid is closed so that the solidifying material is retained in the space area in the form of a plug. As described above, the operation is facilitated by operating from the outside.
【０００７】[0007]
【発明の実施の形態】以下に本発明に係る粉体の供給装
置の実施の形態を図面と共に説明する。なお、本発明は
建物等の基礎を造るための地盤改良として、固化材であ
るセメントの供給装置に利用した場合を説明するが、こ
れに限らず家畜の飼料や肥料などの粉体の供給装置とし
ても利用できるものである。図１において１は粉状の固
化材であるセメントを貯留するセメントサイロであり、
貯留される固化材は送出管２を経て１つの粉体ホッパー
３へ供給される。該粉体ホッパー３に供給された固化材
は該粉体ホッパー３の下端に設けられた送出管路４内を
スクリューコンベヤ５で搬送され先端の排出口６から供
給管７へ定量づつ供給される。この供給管７にはドライ
コンプレッサ８から圧縮空気が供給され、この圧縮空気
と固化材との混合流が供給管７内を圧送される。なお、
Ｒは本発明の装置を操作するための運転管理室である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a powder feeder according to the present invention will be described below with reference to the drawings. The present invention will be described as a ground improvement for building a foundation of a building or the like, when it is used for a feeder for cement, which is a solidifying material, but is not limited to this, and a feeder for powder of livestock feed or fertilizer. It can also be used as In FIG. 1, 1 is a cement silo for storing cement, which is a powdery solidifying material,
The stored solidifying material is supplied to one powder hopper 3 via the delivery pipe 2. The solidifying material supplied to the powder hopper 3 is conveyed by the screw conveyor 5 in the delivery pipe line 4 provided at the lower end of the powder hopper 3 and is supplied quantitatively from the discharge port 6 at the tip to the supply pipe 7. . Compressed air is supplied from the dry compressor 8 to the supply pipe 7, and a mixed flow of the compressed air and the solidifying material is pressure-fed in the supply pipe 7. In addition,
R is an operation control room for operating the apparatus of the present invention.
【０００８】供給管７はパワーショベル（バックホー）
９に載置され、さらに該パワーショベル９のブーム１０
及びアーム１１に沿わせる。そして、供給管７の先端に
設けた粉体噴射口１６はアーム１１の先端に装着される
土壌攪拌機１２に添設される。この土壌攪拌機１２は二
股状の機枠の上下端にそれぞれ一対のスプロケットを取
着した水平な回転軸を設け、両スプロケット間に複数の
攪拌翼を設けたチェンを回動自在に設けた公知の構成か
らなり、アーム１１の上下動で土壌攪拌機１２の全体が
上下動でき、攪拌翼で土壌を堀削すると共に攪拌しつつ
供給管７先端の粉体噴射口１６から固化材を噴射させ土
壌へ供給して土壌の改良を行なわせるようにしている。
なお、この土壌攪拌機１２には上下方向に伸縮可能な蛇
腹状に形成された防塵カバー１３が装着され、粉体噴射
口１６から噴射された固化材のうち、土壌と混合されず
に周囲に飛散しようとする粉塵を閉じ込め公害防止に務
めている。The supply pipe 7 is a power shovel (backhoe).
9, the boom 10 of the power shovel 9 is mounted.
And along the arm 11. The powder injection port 16 provided at the tip of the supply pipe 7 is attached to the soil agitator 12 attached to the tip of the arm 11. This soil agitator 12 is a well-known type in which a horizontal rotary shaft having a pair of sprockets attached thereto is provided at the upper and lower ends of a bifurcated machine frame, and a chain provided with a plurality of agitating blades is rotatably provided between both sprockets. The soil agitator 12 can be vertically moved by the vertical movement of the arm 11, and the soil is excavated by the agitating blades and the solidified material is injected from the powder injection port 16 at the tip of the supply pipe 7 to the soil while stirring. It is supplied so that the soil can be improved.
The soil agitator 12 is provided with a dustproof cover 13 formed in a bellows shape that can be expanded and contracted in the vertical direction, and among the solidified material sprayed from the powder spray port 16, the solidified material is scattered without being mixed with the soil. It works to prevent pollution by trapping the dust that is about to be trapped.
【０００９】しかして、前記粉体ホッパー３は図２に示
すように漏斗状に形成され、下部に連設した小径筒部１
４の底部に先端を上向きにして傾斜させた送出管路４が
設けられる。該送出管路４の先端は、供給管７基端側の
垂直状の連結部１５に排出口６を介して連通させてい
る。送出管路４内にスクリューコンベヤ５が設置される
が、このスクリューコンベヤ５の終端と排出口６との間
に所要の長さを有する空間領域１７が形成される。前記
スクリューコンベヤ５はモータ１８の駆動軸１９の先端
に固着され、モータ１８の回転駆動により回転して固化
材を供給管７へ導くようにしている。２０は粉体ホッパ
ー３内に貯留させる固化材の量を検知するセンサーであ
る。As described above, the powder hopper 3 is formed in a funnel shape as shown in FIG.
At the bottom of 4, there is provided a delivery conduit 4 which is inclined with its tip facing upward. The tip of the delivery pipe line 4 communicates with the vertical connecting portion 15 on the base end side of the supply pipe 7 through the discharge port 6. A screw conveyor 5 is installed in the delivery pipe line 4, and a space region 17 having a required length is formed between the end of the screw conveyor 5 and the discharge port 6. The screw conveyor 5 is fixed to the tip of the drive shaft 19 of the motor 18, and is rotated by the rotation of the motor 18 to guide the solidified material to the supply pipe 7. Reference numeral 20 is a sensor that detects the amount of the solidifying material stored in the powder hopper 3.
【００１０】そこで、セメントサイロ１から送出管２を
介して粉体ホッパー３に供給された固化材は、その底部
のスクリューコンベヤ５の回転により、その排出口６側
へ送り出される。この時、連結部１５の外側に設けられ
る扉２１を開け、あらかじめ排出口６を平板で閉塞して
おく。この状態で、スクリューコンベヤ５を回転させ固
化材を送り続ける。すると、前記空間領域１７に固化材
が栓状に滞留する。スクリューコンベヤ５に接触する固
化材は回転するので粗い層しか形成されないが、空間領
域１７内の固化材は回転することはなく、しかもスクリ
ューコンベヤ５から固化材が送られて来るので圧縮され
密な層Ａが形成されることとなる。そこで、排出口６か
ら固化材が押し出されるようになったとき、該排出口６
を閉塞している平板を外す。空間領域１７に設けられる
固化材の密な層Ａは、供給管７に供給される圧縮空気に
充分耐え得るようにその長さが選ばれる。Then, the solidified material supplied from the cement silo 1 to the powder hopper 3 via the delivery pipe 2 is delivered to the discharge port 6 side by the rotation of the screw conveyor 5 at the bottom thereof. At this time, the door 21 provided outside the connecting portion 15 is opened, and the discharge port 6 is closed with a flat plate in advance. In this state, the screw conveyor 5 is rotated and the solidified material is continuously fed. Then, the solidifying material stays in the space area 17 like a plug. The solidified material in contact with the screw conveyor 5 rotates, so that only a rough layer is formed, but the solidified material in the space region 17 does not rotate, and moreover, the solidified material is sent from the screw conveyor 5 and thus compressed and dense. The layer A will be formed. Therefore, when the solidified material is pushed out of the discharge port 6,
Remove the plate that is blocking the. The length of the dense layer A of the solidifying material provided in the space region 17 is selected so as to sufficiently withstand the compressed air supplied to the supply pipe 7.
【００１１】このようにして、空間領域１７に固化材の
密な層Ａを形成させてから、スクリューコンベヤ５を回
転させ、順次固化材を排出口６側へ送り出し、その圧力
で密な層Ａの先端部の固化材を順次適量ずつ供給管７へ
導き、圧縮空気により固化材を圧送する。このようにす
れば、逆流が防止でき、しかも固化材の粉体ホッパー３
並びに供給管７への供給が途切れることなく連続してス
ムーズに行なえ作業が能率的に行なえることとなる。In this way, after the dense layer A of the solidifying material is formed in the space area 17, the screw conveyor 5 is rotated to sequentially send the solidifying material to the discharge port 6 side, and the dense layer A is generated by the pressure. An appropriate amount of the solidified material at the leading end of the solidified material is sequentially guided to the supply pipe 7, and the solidified material is pressure-fed by compressed air. In this way, backflow can be prevented and the powder hopper 3 of the solidifying material can be prevented.
In addition, the supply to the supply pipe 7 can be continuously and smoothly performed without interruption, and the work can be efficiently performed.
【００１２】図３に示した固化材の供給装置は他の実施
の形態を示すもので、排出口６に開閉自在の準備蓋２２
を装着したものである。該準備蓋２２は図４に示すよう
ハンドル２３を連結部１５の外側に設けるようにしてお
り、このハンドル２３を操作することによって、準備蓋
２２の開閉動作ができるので作業が楽になる。The solidifying material supply device shown in FIG. 3 shows another embodiment of the present invention.
Is attached. As shown in FIG. 4, the preparation lid 22 is provided with a handle 23 on the outside of the connecting portion 15. By operating the handle 23, the preparation lid 22 can be opened and closed, which facilitates the work.
【００１３】[0013]
【発明の効果】以上述べたように、本発明の粉体の供給
装置は、粉体ホッパー底部の送出管路内に、スクリュー
コンベヤを内装すると共に該スクリューコンベヤの終端
と排出口との間に空間領域を形成したので、該空間領域
に固化材が栓状に滞留することとなり、これにより粉体
ホッパー内への圧縮空気の逆流が阻止され、しかも供給
管への粉体の供給が連続してスムーズに行なえるように
なるので、従来の如く粉体を貯留するタンクを２基揃え
る必要がなくなり、構造が簡素化して設備費の低減が図
られる。更に、作業能率も向上するといった有益な効果
を有する。As described above, in the powder feeding apparatus of the present invention, the screw conveyor is installed inside the delivery pipe line at the bottom of the powder hopper, and between the end of the screw conveyor and the discharge port. Since the space area is formed, the solidified material stays in the space area in the form of a plug, which prevents the backflow of compressed air into the powder hopper, and the continuous supply of the powder to the supply pipe. Therefore, it is not necessary to arrange two tanks for storing powder as in the conventional case, which simplifies the structure and reduces the facility cost. Further, there is a beneficial effect that work efficiency is improved.
【図１】本発明に係わる固化材の供給装置の全体構成概
要図。FIG. 1 is an overall configuration schematic diagram of a solidifying material supply device according to the present invention.
【図２】同要部拡大概要図。FIG. 2 is an enlarged schematic view of the relevant part.
【図３】他の実施の形態を示す要部拡大概要図。FIG. 3 is an enlarged schematic view of an essential part showing another embodiment.
【図４】図３のＸ−Ｘ線拡大断面図。4 is an enlarged cross-sectional view taken along line XX of FIG.
【図５】従来の粉体の供給装置の側面図。FIG. 5 is a side view of a conventional powder supply device.
３ 粉体ホッパー ４ 送出管路 ５ スクリューコンベヤ ６ 排出口 ７ 供給管 １６ 排出口 １７ 空間領域 3 Powder Hopper 4 Delivery Pipeline 5 Screw Conveyor 6 Discharge Port 7 Supply Pipe 16 Discharge Port 17 Space Area
Claims (2)
スクリューコンベヤを内装した送出管路を設け、該送出
管路はその先端の排出口を介して供給管と連通し、前記
スクリューコンベヤの回転により粉体ホッパー内の粉体
を順次供給管へ導くようにした粉体の供給装置であっ
て、 前記スクリューコンベヤの終端と排出口との間に、粉体
が栓状に滞留しつつ順次供給管内へ排出されるよう所要
長さの空間領域を形成して、供給管内の圧縮空気が粉体
ホッパー内へ逆流することなく粉体を供給管内へ連続し
て導くようにしたことを特徴とする粉体の供給装置。1. A powder hopper for receiving powder is provided with a delivery pipe line in which a screw conveyor is installed, and the delivery pipe line communicates with a supply pipe through a discharge port at the tip thereof to rotate the screw conveyor. Is a powder supply device configured to sequentially guide the powder in the powder hopper to the supply pipe, and the powder is sequentially supplied while staying like a plug between the end of the screw conveyor and the discharge port. It is characterized in that a space region having a required length is formed so as to be discharged into the pipe, and the compressed air in the supply pipe is continuously guided into the supply pipe without backflowing into the powder hopper. Powder supply device.
出口を閉じておくよう該排出口に外側から操作し得る準
備蓋を開閉自在に装着した請求項１記載の粉体の供給装
置。2. The powder supply according to claim 1, wherein a preparatory lid that can be operated from the outside is attached to the discharge port so as to be opened and closed so that the discharge port is closed until the powder stays like a plug in the space area. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23914495A JPH0958840A (en) | 1995-08-23 | 1995-08-23 | Powder feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23914495A JPH0958840A (en) | 1995-08-23 | 1995-08-23 | Powder feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0958840A true JPH0958840A (en) | 1997-03-04 |
Family
ID=17040418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23914495A Pending JPH0958840A (en) | 1995-08-23 | 1995-08-23 | Powder feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0958840A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105775789A (en) * | 2016-03-14 | 2016-07-20 | 蔡惠文 | Stepped type spiral transporting and crushing device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6256528B2 (en) * | 1981-07-02 | 1987-11-26 | Intaanashonaru Bijinesu Mashiinzu Corp | |
| JPH04286535A (en) * | 1991-03-13 | 1992-10-12 | Nisshin Flour Milling Co Ltd | Device for vertically transporting granule |
-
1995
- 1995-08-23 JP JP23914495A patent/JPH0958840A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6256528B2 (en) * | 1981-07-02 | 1987-11-26 | Intaanashonaru Bijinesu Mashiinzu Corp | |
| JPH04286535A (en) * | 1991-03-13 | 1992-10-12 | Nisshin Flour Milling Co Ltd | Device for vertically transporting granule |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105775789A (en) * | 2016-03-14 | 2016-07-20 | 蔡惠文 | Stepped type spiral transporting and crushing device |
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