JP3538797B2 - Ground improvement material supply stirring mixing method and apparatus - Google Patents
Ground improvement material supply stirring mixing method and apparatusInfo
- Publication number
- JP3538797B2 JP3538797B2 JP11035297A JP11035297A JP3538797B2 JP 3538797 B2 JP3538797 B2 JP 3538797B2 JP 11035297 A JP11035297 A JP 11035297A JP 11035297 A JP11035297 A JP 11035297A JP 3538797 B2 JP3538797 B2 JP 3538797B2
- Authority
- JP
- Japan
- Prior art keywords
- improvement material
- pressure
- valve
- ground improvement
- transport
- 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 - Fee Related
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はセメント等の地盤改
良材を軟弱地盤に供給すると共に攪拌混合させて地盤を
改良する地盤改良材供給攪拌混合装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground improving material supply stirring and mixing apparatus for supplying a ground improving material such as cement to soft ground and agitating and mixing the ground to improve the ground .
【０００２】[0002]
【従来の技術】従来上記のような地盤改良材供給撹拌混
合装置としては、地盤改良材のホッパにロータリバルブ
を設置し、空気輸送管に地盤改良材を連続して落し込み
撹拌混合機に連続輸送しながら軟弱地盤の撹拌混合を行
うようにしている。2. Description of the Related Art Conventionally, as a ground improvement material supply stirring and mixing apparatus as described above, a rotary valve is installed in a hopper of the ground improvement material, and the ground improvement material is continuously dropped into an air transport pipe and continuously mixed with a stirring and mixing machine. The soft ground is agitated and mixed while being transported.
【０００３】[0003]
【発明が解決しようとする課題】上記のように地盤改良
材をホッパからロータリバルブを介して空気輸送管に落
とし込んで攪拌混合機へ輸送するものにおいては、輸送
距離が長くなると輸送空気圧が高くなりロータリバルブ
から吹き上げて切り出し量が安定しなくなり、やがては
輸送管内に地盤改良材が閉塞してしまう問題があった。
本発明は上記の事情に鑑みて成されたもので輸送距離が
長くても安心した輸送を続けて地盤改良材の軟弱地盤へ
の供給攪拌混合を成す装置を提供することを目的とす
る。As described above, when the ground improvement material is dropped from a hopper into a pneumatic transport pipe via a rotary valve and transported to a stirring mixer, the transport air pressure increases as the transport distance increases. There has been a problem that the cut-out amount becomes unstable after being blown up from the rotary valve, and the ground improvement material is eventually blocked in the transport pipe.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an apparatus for supplying a ground improving material to a soft ground by stirring and mixing, even if the transport distance is long.
【０００４】[0004]
【課題を解決するための手段】上記の目的を達成するた
めに本発明における地盤改良材供給攪拌混合装置は、２
基の空気輸送用圧力タンクを並列に配置し、該圧力タン
クの地盤改良材補給口を切替弁付の二股供給筒の２つの
排出口に別々に連通し、前記圧力タンクの地盤改良材排
出口をロータリバルブを介して輸送弁付き空気輸送ノズ
ルに連通し、該空気輸送ノズルを攪拌混合機に通じる空
気輸送管に集合連通し、前記圧力タンクを差圧スイッチ
を介して連通すると共に前記空気輸送管に２次エアー供
給管を連通したことを特徴とするものである。SUMMARY OF THE INVENTION In order to achieve the above object, a ground improvement material supply stirring and mixing apparatus according to the present invention comprises
Base tanks for pneumatic transportation are arranged in parallel,
The ground improvement material supply port of the two
It communicates separately with the discharge port to discharge the ground improvement material from the pressure tank.
Air transport nozzle with transport valve at the outlet via rotary valve
And the air transport nozzle communicates with the stirring mixer.
Collectively communicate with the pneumatic transport pipe and connect the pressure tank to a differential pressure switch
And a secondary air supply to the air transport pipe.
It is characterized by connecting a supply pipe .
【０００５】[0005]
【発明の実施の形態】以下本発明の実施の形態を図面に
基づいて詳しく説明する。図１において、空気輸送用タ
ンク１、２がロードセル１ａ、２ａにより重量計測可能
にして並列に配置されている。該圧力タンク１、２の上
端に設けられたダンパ弁１ｂ、２ｂ付の地盤改良材補給
口１ｃ、２ｃは、切替弁３付の二股供給筒４の２つの排
出口に別々に連通されている。また圧力タンク１、２の
上部位置には排気弁１ｄ、２ｄ付の排気管１ｅ、２ｅが
連通されており、圧力タンク１、２の地盤改良材排出口
１ｆ、２ｆをロータリバルブ１ｇ、２ｇを介して輸送弁
１ｈ、２ｈ付空気輸送ノズル１ｉ、２ｉに連通されてい
る。さらに空気輸送ノズル１ｉ、２ｉは、撹拌混合機５
に通じる空気輸送管６に集合連通され、該空気輸送管６
は、図示されない空気供給源に２次エアー弁７付配管８
を介して連通されて２次エアーが導入されるように構成
されている。Embodiments of the present invention will be described below in detail with reference to the drawings. In FIG. 1, pneumatic transport tanks 1 and 2 are arranged in parallel so that weight can be measured by load cells 1a and 2a. Ground improvement material supply ports 1c and 2c provided with damper valves 1b and 2b provided at the upper ends of the pressure tanks 1 and 2 are separately communicated with two discharge ports of a forked supply cylinder 4 provided with a switching valve 3. . Exhaust pipes 1e, 2e provided with exhaust valves 1d, 2d are connected to upper positions of the pressure tanks 1, 2, and ground improvement material discharge ports 1f, 2f of the pressure tanks 1, 2 are connected to rotary valves 1g, 2g. It communicates with the pneumatic transport nozzles 1i, 2i with the transport valves 1h, 2h through the air. Further, the pneumatic transport nozzles 1i and 2i are
Are collectively connected to the air transport pipe 6 communicating with the air transport pipe 6.
Is a pipe 8 with a secondary air valve 7 connected to an air supply source (not shown).
And the secondary air is introduced.
【０００６】さらに前記空気輸送ノズル１ｉ、２ｉの基
端側（ロータリバルブ側）は、図示されない圧縮空気源
に給気弁１ｊ、２ｊを介して配管６Ａ、６Ｂが連通され
ており、該給気弁１ｊ、２ｊの下流には２本の分岐管１
ｋ、１ｌ、２ｋ、２ｌが適当な間隔をおいて配管されて
いる。上流側の分岐管１ｋ、２ｋは調整弁１ｍ、２ｍ及
び逆止弁１ｎ、２ｎを介して圧力タンク１、２の下側部
に連通されて圧力タンク１、２内での地盤改良材の流下
を促進させるように構成されており、下流側の分岐管１
ｌ、２ｌは圧力タンク１、２の上端部に連通されて圧力
タンク１、２内を昇圧及び均圧させるように構成されて
いる。また配管６Ａ、６Ｂにおける分岐管１ｋ、２ｋと
分岐管１ｌ、２ｌとの間には調整弁１ｐ、２ｐ及び逆止
弁１ｑ、２ｑが設けられている。さらに前記圧力タンク
１、２は差圧スイッチ９を介して連結されていて圧力タ
ンク１、２内の圧力が同圧になったことを検知して昇圧
を停止させるように構成してある。Further, at the base end side (rotary valve side) of the air transport nozzles 1i, 2i, pipes 6A, 6B are connected to a compressed air source (not shown) via air supply valves 1j, 2j. Downstream of the valves 1j and 2j, two branch pipes 1
k, 1l, 2k, and 2l are piped at appropriate intervals. The upstream branch pipes 1k and 2k are communicated with the lower portions of the pressure tanks 1 and 2 via the regulating valves 1m and 2m and the check valves 1n and 2n, and the ground improvement material flows down in the pressure tanks 1 and 2. Branch pipe 1 on the downstream side.
Reference numerals 1 and 2l communicate with the upper ends of the pressure tanks 1 and 2 so as to increase and equalize the pressure in the pressure tanks 1 and 2. Adjustment valves 1p, 2p and check valves 1q, 2q are provided between the branch pipes 1k, 2k and the branch pipes 11, 12 in the pipes 6A, 6B. Further, the pressure tanks 1 and 2 are connected via a differential pressure switch 9 so as to detect that the pressures in the pressure tanks 1 and 2 have become equal to each other and stop increasing the pressure.
【０００７】このように構成されたものは、排気弁１ｄ
が開かれて圧力タンク１内の圧縮空気が排気された後ダ
ンパ弁１ｂが開かれると共に切替弁３を圧力タンク１側
に切り替え、二股供給筒４を介して地盤改良材が圧力タ
ンク１内に供給されてゆき圧力タンク１の重量が所定重
量に達するとロードセル１ａが作動して地盤改良材の供
給が停止される。次にダンパ弁１ｂ、排気弁１ｄが閉じ
られ給気弁１ｊが開かれて圧力タンク１内が所定圧にな
るまで昇圧された後輸送弁１ｈ、及び２次エアー弁７が
開かれロータリバルブ１ｇが作動されて圧力タンク１内
の地盤改良材の輸送が開始されて撹拌混合機５に送られ
軟弱地盤への供給と撹拌混合により地盤の改良が行われ
てゆく。このようにして圧力タンク１による地盤改良材
の輸送が開始されると圧力タンク２においては排気弁２
ｄ、ダンパ弁２ｂが開かれた後切替弁３が圧力タンク２
側へ切り替えられ二股供給筒４を介して地盤改良材が圧
力タンク２内に供給されてゆき、圧力タンク２の重量が
所定重量に達するとロードセル２ａが作動して地盤改良
材の供給が停止される。[0007] The exhaust valve 1d having the above-described structure is used.
Is opened and the compressed air in the pressure tank 1 is exhausted, the damper valve 1b is opened and the switching valve 3 is switched to the pressure tank 1 side, and the ground improvement material is put into the pressure tank 1 via the forked supply cylinder 4. When the weight of the supplied pressure tank 1 reaches a predetermined weight, the load cell 1a operates to stop the supply of the ground improvement material. Next, the damper valve 1b and the exhaust valve 1d are closed, the air supply valve 1j is opened, and the pressure inside the pressure tank 1 is raised to a predetermined pressure. Then, the transport valve 1h and the secondary air valve 7 are opened and the rotary valve 1g is opened. Is actuated to start the transportation of the ground improvement material in the pressure tank 1 and sent to the agitating mixer 5 to improve the ground by supplying the soft ground and agitating and mixing. When the transportation of the ground improvement material by the pressure tank 1 is started in this way, the exhaust valve 2
d, after the damper valve 2b is opened, the switching valve 3 is switched to the pressure tank 2
And the ground improvement material is supplied into the pressure tank 2 via the forked supply cylinder 4, and when the weight of the pressure tank 2 reaches a predetermined weight, the load cell 2a operates to stop the supply of the ground improvement material. You.
【０００８】次にダンパ弁２ｂ、排気弁２ｄが閉じられ
て給気弁２ｊが開かれて圧力タンク２内が昇圧されてゆ
き差圧スイッチ９により圧力タンク２内の圧力が圧力タ
ンク１内の圧力と同圧になったことが検知されると給気
弁２ｊが閉じられて待機する。一方圧力タンク１による
地盤改良材の輸送が進み圧力タンク１の重量が所定重量
に減量されたことがロードセル１ｂにより検知されると
前記給気弁２ｊ、輸送弁２ｈが開かれると共にロータリ
バルブ２ｇが作動されて圧力タンク２による地盤改良材
の輸送が直ちに開始されると同時に圧力タンク１側の給
気弁１ｈが閉じられる。その後前記と同様にして圧力タ
ンク１内への地盤改良材の補給及び昇圧が行われて圧力
タンク２側の輸送が終了されるまで待機する。以上の作
動を圧力タンク１側と圧力タンク２側とで交互に行うこ
とにより、地盤改良材は圧力タンク１、２の輸送切り替
えにおいても供給が途切れることなく直ちに輸送空気圧
を同圧にして安定して輸送されることになる。Next, the damper valve 2b and the exhaust valve 2d are closed, the air supply valve 2j is opened, the pressure in the pressure tank 2 is increased, and the pressure in the pressure tank 2 is increased by the differential pressure switch 9. When it is detected that the pressure becomes the same as the pressure, the air supply valve 2j is closed and waits. On the other hand, when it is detected by the load cell 1b that the transport of the ground improvement material by the pressure tank 1 has progressed and the weight of the pressure tank 1 has been reduced to a predetermined weight, the air supply valve 2j and the transport valve 2h are opened, and the rotary valve 2g is opened. When activated, the transportation of the ground improvement material by the pressure tank 2 is immediately started, and at the same time, the air supply valve 1h on the pressure tank 1 side is closed. Thereafter, in the same manner as described above, the supply of the ground improvement material into the pressure tank 1 and the pressurization are performed, and the process stands by until the transportation to the pressure tank 2 is completed. By performing the above operation alternately on the pressure tank 1 side and the pressure tank 2 side, the ground improvement material can be stabilized immediately by changing the transport air pressure to the same pressure without interruption even when the transport of the pressure tanks 1 and 2 is switched. Will be transported.
【０００９】[0009]
【発明の効果】本発明は上記の説明から明らかなよう
に、２基の空気輸送用圧力タンクを並列に配置し、該圧
力タンクの地盤改良材補給口を切替弁付の二股供給筒の
２つの排出口に別々に連通し、前記圧力タンクの地盤改
良材排出口をロータリバルブを介して輸送弁付空気輸送
ノズルに連通し、該空気輸送ノズルを攪拌混合機に通じ
る空気輸送管に集合連通し、前記圧力タンクを差圧スイ
ッチを介して連通すると共に前記空気輸送管に２次エア
ー供給管を連通したから２基の圧力タンクの輸送切り替
えにおいても地盤改良材の供給が途切れることなく直ち
に輸送空気圧を同圧にして安定して輸送できるようにな
り、その効果は著大である。According to the present invention, as apparent from the above description, two pressure tanks for pneumatic transportation are arranged in parallel,
The ground improvement material supply port of the power tank is
The two outlets are communicated separately, and the ground
Good material discharge port via rotary valve Pneumatic transport with valve
Communicates with the nozzle and connects the pneumatic transport nozzle to the stirring mixer.
Collectively communicate with the pneumatic transport pipe, and connect the pressure tank to the differential pressure switch.
And the secondary air is connected to the air transport pipe.
-Since the supply pipe is connected , even when switching the transportation of two pressure tanks, the supply of ground improvement material can be immediately and stably transported with the same air pressure without interruption, and the effect is remarkable. .
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施形態を示す系統図である。FIG. 1 is a system diagram showing an embodiment of the present invention.
１ ２ 圧力タンク ３ 切替弁 ４ 二股供給筒 ５ 撹拌混合機 ６ 空気輸送管 ８ ２次エアー供給管 ９ 差圧スイッチ １ｃ ２ｃ 地盤改良材補給口 １ｆ ２ｆ 地盤改良材排出口 １ｇ ２ｇ ロータリバルブ １ｈ ２ｈ 輸送弁 １ｉ ２ｉ 空気輸送ノズル 1 2 Pressure tank 3 Switching valve 4 Bifurcated supply cylinder 5 Stirring mixer 6 Pneumatic transport pipe 8 Secondary air supply pipe 9 Differential pressure switch 1c 2c Ground improvement material supply port 1f 2f Ground improvement material outlet 1g 2g rotary valve 1h 2h Transport valve 1i 2i Pneumatic transport nozzle
Claims (1)
並列に配置し、該圧力タンク（１、２）の地盤改良材補
給口（１ｃ、２ｃ）を切替弁（３）付の二股供給筒
（４）の２つの排出口に別々に連通し、前記圧力タンク
（１、２）の地盤改良材排出口（１ｆ、２ｆ）をロータ
リバルブ（１ｇ、２ｇ）を介して輸送弁（１ｈ、２ｈ）
付き空気輸送ノズル（１ｉ、２ｉ）に連通し、該空気輸
送ノズル（１ｉ、２ｉ）を攪拌混合機（５）に通じる空
気輸送管（６）に集合連通し、前記圧力タンク（１、
２）を差圧スイッチ（９）を介して連通すると共に前記
空気輸送管（６）に２次エアー供給管（８）を連通した
ことを特徴とする地盤改良材供給攪拌混合装置。1. A pneumatic transport Pressure tanks 2 group of (1, 2) arranged in parallel, soil improvement material supply port of the pressure tank (1, 2) (1c, 2c) of the switching valve (3) with Fork supply cylinder
( 4 ) separately communicating with the two outlets, the pressure tank
Soil improvement material outlet (1,2) (1f, 2f) a rotary valve (1 g, 2 g) through a transport valve (1h, 2h)
Communicates with the attached air transport nozzle (1i, 2i), the air transport nozzle (1i, 2i) is passed through a set with the air transport pipe leading to the stirring mixer (5) (6), said pressure tank (1,
2) the air transport pipe (6) to the soil improvement agent supply agitation mixing apparatus characterized by communicating the secondary air supply pipe (8) communicated with via a differential pressure switch (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11035297A JP3538797B2 (en) | 1997-04-11 | 1997-04-11 | Ground improvement material supply stirring mixing method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11035297A JP3538797B2 (en) | 1997-04-11 | 1997-04-11 | Ground improvement material supply stirring mixing method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10292363A JPH10292363A (en) | 1998-11-04 |
| JP3538797B2 true JP3538797B2 (en) | 2004-06-14 |
Family
ID=14533598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11035297A Expired - Fee Related JP3538797B2 (en) | 1997-04-11 | 1997-04-11 | Ground improvement material supply stirring mixing method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3538797B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5273006B2 (en) * | 2009-10-06 | 2013-08-28 | 三菱化学株式会社 | Method for producing polycarbonate resin |
-
1997
- 1997-04-11 JP JP11035297A patent/JP3538797B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10292363A (en) | 1998-11-04 |
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