JPH07103199A - Solid-liquid sucking and pumping device and its usage - Google Patents
Solid-liquid sucking and pumping device and its usageInfo
- Publication number
- JPH07103199A JPH07103199A JP13180592A JP13180592A JPH07103199A JP H07103199 A JPH07103199 A JP H07103199A JP 13180592 A JP13180592 A JP 13180592A JP 13180592 A JP13180592 A JP 13180592A JP H07103199 A JPH07103199 A JP H07103199A
- Authority
- JP
- Japan
- Prior art keywords
- solid
- liquid
- mixing chamber
- opening
- pumping
- 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
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
【0001】
【産業上の利用分野】本発明は、真空吸引方式を利用し
た固液混合体の揚送装置およびその使用方法、例えばシ
ールド工事における竪坑からの排水排土や、ポンプ沈砂
池の土砂回収など、地下工事および高吸込揚程条件下に
おける含水比の低い固液混合体を対象とした揚送装置お
よびその使用方法に関する。
【0002】
【従来の技術とその問題点】水中サンドポンプを使用し
て水中に混在する土砂を揚送する装置は古くから存在す
るが、内部に可動部を有するため、機械的な磨耗が発生
し、或いは絡み付きによる閉塞を生じることが多い。ま
た、揚送管路内流速が常にスラリーの沈澱しない高流速
であることが必要で、一般的に細砂の条件で3m/s以
上とされているため、土砂の回収が目的であるにも拘ら
ず多量の水を必要とし、使用された水の後処理に大掛か
りな設備が必要となる。
【0003】真空発生装置を利用して水中に含まれてい
る土砂を吸引揚送するという技術的思想も公知である
が、この場合、従来その吸込揚程は、絶対真空条件下で
あっても10m(760mmHg)とされており、吸込揚程
が高くなると真空吸引効果の低下を来すことになり、比
重や粘性の高いヘドロや土砂は揚送不能となる。また、
揚送管路内の風速を常に一定に維持させる必要があり、
吸込先端部へ常に空気を補給するための別動力が必要で
構造的にも複雑なものとなる。更にまた、揚送管路内の
移送状況や圧力状況により、供給空気量を微妙に調整す
ることを要するため、その制御操作も煩雑化するという
結果となる。
【0004】また、空気圧縮装置を利用した加圧空気圧
送方式による固液の移送装置も存在するが、この方式に
よる揚送装置自体には被揚送体を揚送管内へ導く機能が
なく、被揚送体導入のため機械装置を地底に別設するこ
とが必要となり、その設置スペースを地底に確保するこ
とが困難なため、地下工事における土砂の揚送には不向
きである。
【0005】
【発明の目的】本発明の目的は、可動部の機械的な磨耗
や、絡み付き等のトラブルを生じることなく、比重や粘
性の高いヘドロや土砂などの吸込と揚送が一貫的に行わ
れて地底における設置スペースが少なくて済み、地下工
事および高吸込揚程条件下においても有効に機能し、し
かも構造簡潔で操作も簡単な固液吸込揚送装置とその使
用方法を提供することにある。
【0006】
【発明の構成】本発明に係る固液吸込揚送装置において
は、供液源内に開口される固液吸込口大気中に開口され
る吸気管とを合流させて混合室となし、真空発生装置の
作動によって負圧とされる固液回収タンクより導下され
た揚送管を前記混合室内へ導入し、かつ、前記吸気管に
開閉機構を附設する。
【0007】そして本発明固液吸込揚送装置を使用する
については、真空発生装置を駆動して、吸気管の開閉バ
ルブの閉操作により固液回収タンクと共に揚送管および
混合室内を負圧状態となし、供液源における固液を固液
吸込口より揚送管および混合室内へ一定量吸引させたの
ち、吸気管の開閉機構の開操作により揚送管および混合
室内の負圧力を破壊させ、吸気管から流入する外気を揚
送管および混合室内の固液に混合させて空気流により揚
送管および混合室内の固液を固液回収タンク内へ揚送さ
せ、上記開閉機構の開閉操作を反復させることにより供
液源の固液を逐次断続的に固液回収タンク内へ揚送させ
るのである。
【0008】
【実施例】以下実施例の図面により説明をする。
【0009】1は水封式の真空ポンプまたはブロワーを
用いた真空発生装置、2は真空発生装置1の作動によっ
て負圧とされる固液回収タンク、3は真空発生装置1と
固液回収タンク2との間に介装される液分回収タンク、
4は固液回収タンク2と液分回収タンク3とを導通させ
る通液管、5は真空発生装置1における真空ポンプまた
はブロワーの吸気口を液分回収タンク3の上方部へ導通
させた通気管である。6は揚送の対象とされている固液
混合体の存在する供液源、7は供液源6内に開口される
固液吸込口8と大気中に開口される吸気管9とを合流さ
せてなる混合室、10は吸気管9に附設された開閉機
構、11は固液回収タンク2より導下された揚送管であ
って、その導下先端部12は混合室7内へ導入開口され
ている。13は液分回収タンク3内に設置された水中ポ
ンプ、14は水中ポンプ13の吐出口から導出された液
分返送管であって、その導出先端部15は供液源6内の
下方部へ導入開口されている。
【0010】
【作用】図1の管路構成において真空発生装置1を駆動
し、吸気管9の開閉機構10を閉操作すれば、固液回収
タンク2と共に揚送管11および混合室7内は負圧状態
となり、供液源6内における一定量の水を土砂が固液吸
込口8から揚液管11および混合室7内に吸引される。
次に、吸気管9の開閉機構10を開操作することによ
り、揚送管11および混合室7内の負圧力が大気圧力で
破壊され、多量の外気が揚送管11および混合室7内に
流入し、その空気流によって揚送管11および混合室7
内の水と土砂は揚送せられ、固液回収タンク2内へ回収
されることになる。また、この際空気が混合室7内の固
液と混合することによって、固分の見掛比重が軽減さ
れ、吸液中に多量の土砂を含んでいても揚送が可能とな
るのである。
【0011】上記開閉機構10の開閉操作を、吸込条件
により調整せられた適宜時間間隔で反復させることによ
って、供液源6の水と土砂は断続的に揚送せられ、逐次
固液回収タンク2内へ回収されるのである。そして固液
回収タンク2内へ回収された固液のうちの液分は、液分
回収タンク3内へ移送せられ、水中ポンプ13の作動に
より液分返送管14を通って供液源6内へ還元されるの
であるが、導出先端部15から液分が流出する際、供液
源6内における混合攪拌作用を生じさせて固液吸込口8
からの固分の吸込が一層容易となるのである。また、固
液回収タンク2内に残存した固分は下底部の排出口から
適時排出せられ、別途搬送機関(図示せず)に積載され
て所定の廃棄場所へと運ばれるのである。
【0012】
【発明の効果】本発明によれば、機械的な磨耗や、絡み
付き等のトラブルを生じることなく、比重や粘性の高い
ヘドロや土砂などの吸込と揚送が一貫的に行われて地底
における設置スペースが少なくて済み、地下工事および
高吸込揚程条件下においても有効に機能し、しかも構造
簡潔で操作も簡単な固液吸込揚送装置とその使用方法を
提供することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for pumping a solid-liquid mixture using a vacuum suction method and a method of using the same, for example, drainage and soil discharge from a vertical shaft in shield construction. The present invention also relates to a pumping apparatus for a solid-liquid mixture having a low water content ratio and a method of using the same under the conditions of underground construction and high suction lift conditions such as sediment collection in a pump sand basin. 2. Description of the Related Art An apparatus for pumping earth and sand mixed in water using an underwater sand pump has existed for a long time, but mechanical abrasion occurs because it has a movable part inside. Often, or blockage due to entanglement occurs. In addition, the flow velocity in the pumping pipeline must be high so that the slurry does not settle at all times, and it is generally set to 3 m / s or more under the condition of fine sand. Regardless, a large amount of water is required, and large-scale equipment is required for post-treatment of the used water. The technical idea of suctioning and pumping earth and sand contained in water by using a vacuum generator is also known, but in this case, the suction head is conventionally 10 m even under absolute vacuum conditions. It is set to (760 mmHg), and if the suction lift is high, the vacuum suction effect will be reduced, and sludge and sand with high specific gravity and viscosity cannot be pumped. Also,
It is necessary to maintain a constant wind speed in the lifting pipeline,
A separate power is required to constantly supply air to the suction tip, which makes the structure complicated. Furthermore, since it is necessary to finely adjust the amount of supplied air depending on the transfer condition and the pressure condition in the lifting pipeline, the control operation becomes complicated. There is also a solid-liquid transfer device using a pressurized air pressure feed system utilizing an air compression device, but the pumping device itself of this system does not have a function of guiding the object to be pumped into the pumping pipe, Since it is necessary to separately install a mechanical device on the ground floor to introduce the object to be lifted, it is difficult to secure the installation space on the ground floor, and therefore it is not suitable for the lifting of earth and sand in underground construction. It is an object of the present invention to consistently suck and pump sludge and earth and sand having a high specific gravity and viscosity without causing mechanical wear of moving parts and trouble such as entanglement. To provide a solid-liquid suction pumping device and a method of using the solid-liquid suction pumping device, which requires less installation space on the ground floor, functions effectively even under underground construction and high suction lift conditions, and has a simple structure and simple operation. is there. In the solid-liquid suction pumping apparatus according to the present invention, a solid-liquid suction port opened in the liquid supply source and an intake pipe opened in the atmosphere are joined to form a mixing chamber. A pumping pipe introduced from a solid-liquid recovery tank, which is brought to a negative pressure by the operation of a vacuum generator, is introduced into the mixing chamber, and an opening / closing mechanism is attached to the intake pipe. When the solid-liquid suction pumping apparatus of the present invention is used, the vacuum generating apparatus is driven to close the pumping tube and the mixing chamber together with the solid-liquid recovery tank by closing the opening / closing valve of the intake tube to make a negative pressure state. After sucking a certain amount of the solid liquid in the liquid supply source into the pump and the mixing chamber from the solid-liquid inlet, open the opening and closing mechanism of the intake pipe to destroy the negative pressure in the pump and the mixing chamber. , The outside air flowing from the intake pipe is mixed with the solid-liquid in the pump pipe and the mixing chamber, and the solid-liquid in the pump pipe and the mixing chamber is pumped into the solid-liquid recovery tank by the air flow, and the opening / closing operation of the opening / closing mechanism is performed. By repeating the above, the solid-liquid of the liquid supply source is continuously and intermittently pumped into the solid-liquid recovery tank. Embodiments will be described below with reference to the drawings of the embodiments. Reference numeral 1 is a vacuum generator using a water-sealed vacuum pump or blower, 2 is a solid-liquid recovery tank whose negative pressure is generated by the operation of the vacuum generator 1, and 3 is the vacuum generator 1 and the solid-liquid recovery tank. A liquid recovery tank interposed between the two,
Reference numeral 4 is a liquid passage pipe for connecting the solid-liquid recovery tank 2 and liquid content recovery tank 3 to each other. Reference numeral 5 is a ventilation pipe for connecting an intake port of a vacuum pump or a blower in the vacuum generator 1 to an upper portion of the liquid content recovery tank 3. Is. 6 is a liquid supply source in which the solid-liquid mixture to be pumped exists, and 7 is a solid-liquid suction port 8 opened in the liquid supply source 6 and an intake pipe 9 opened in the atmosphere. The mixing chamber 10 is an opening / closing mechanism attached to the intake pipe 9, 11 is a pumping pipe guided from the solid-liquid recovery tank 2, and its guiding tip 12 is introduced into the mixing chamber 7. It is open. Reference numeral 13 is a submersible pump installed in the liquid recovery tank 3, 14 is a liquid return pipe led out from the discharge port of the submersible pump 13, and the leading end portion 15 thereof is directed downward to the inside of the liquid supply source 6. The opening is open. When the vacuum generator 1 is driven and the opening / closing mechanism 10 of the intake pipe 9 is closed in the pipeline configuration of FIG. 1, the solid-liquid recovery tank 2 and the pumping pipe 11 and the mixing chamber 7 are closed. A negative pressure state is established, and a certain amount of water in the liquid supply source 6 is sucked into the pumping pipe 11 and the mixing chamber 7 through the solid-liquid suction port 8.
Next, by opening and closing the opening / closing mechanism 10 of the intake pipe 9, the negative pressure in the pumping pipe 11 and the mixing chamber 7 is destroyed by atmospheric pressure, and a large amount of outside air enters the pumping pipe 11 and the mixing chamber 7. The inflow pipe 11 and the mixing chamber 7 are caused by the air flow.
The water and earth and sand inside are pumped and collected in the solid-liquid recovery tank 2. Further, at this time, the air is mixed with the solid-liquid in the mixing chamber 7, whereby the apparent specific gravity of the solid is reduced, and the liquid can be pumped even if the liquid contains a large amount of earth and sand. By repeating the opening / closing operation of the opening / closing mechanism 10 at appropriate time intervals adjusted by the suction conditions, the water and earth and sand of the liquid supply source 6 are intermittently pumped, and the solid-liquid recovery tank is successively obtained. It will be collected in 2. Then, the liquid content of the solid liquid recovered in the solid-liquid recovery tank 2 is transferred to the liquid content recovery tank 3, and the submersible pump 13 operates to pass the liquid content return pipe 14 to the inside of the liquid supply source 6. However, when the liquid component flows out from the lead-out tip portion 15, it causes a mixing and stirring action in the liquid supply source 6 to generate the solid-liquid suction port 8
It is easier to suck the solids from the. Further, the solids remaining in the solid-liquid recovery tank 2 are discharged from the discharge port at the bottom of the bottom at a proper time, loaded on a separate carrier (not shown), and transported to a predetermined disposal site. According to the present invention, suction and pumping of sludge and earth and sand having a high specific gravity and viscosity can be carried out consistently without causing mechanical abrasion, trouble such as entanglement and the like. It is possible to provide a solid-liquid suction pumping device and a method of using the solid-liquid suction pumping device, which requires a small installation space on the ground floor, functions effectively even under underground construction and high suction pumping conditions, and has a simple structure and simple operation.
【図面の簡単な説明】
【図1】本発明固液吸込揚送装置の管路構成図である。
【図2】本発明固液吸込揚送装置における混合室の構造
例を示した縦断側面図である。
【符号の説明】
1 真空発生装置
2 固液回収タンク
6 供液源
7 混合室
8 固液吸込口
9 吸気管
10 開閉機構
11 揚送管BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a pipeline configuration diagram of a solid-liquid suction pumping device of the present invention. FIG. 2 is a vertical sectional side view showing a structural example of a mixing chamber in the solid-liquid suction pumping device of the present invention. [Explanation of Codes] 1 Vacuum generator 2 Solid-liquid recovery tank 6 Liquid supply source 7 Mixing chamber 8 Solid-liquid suction port 9 Intake pipe 10 Opening / closing mechanism 11 Lifting pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石井 慶治 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 下農 三郎 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 西村 武幸 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 小林 正弘 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 池内 利光 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 工岡 登 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 久保 祐 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 (72)発明者 米村 秀樹 大阪府大阪市鶴見区鶴見4丁目16番40号株 式会社鶴見製作所内 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Keiji Ishii 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Saburo Shimono 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Takeyuki Nishimura 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Masahiro Kobayashi 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Toshimitsu Ikeuchi 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Noboru Kouoka 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Yu Kubo 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works (72) Inventor Hideki Yonemura 4-16-40 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Ceremony company Tsurumi Works
Claims (1)
(8)と大気中に開口される吸気管(9)とを合流させ
て混合室(7)となし、真空発生装置(1)の作動によ
って負圧とされる固液回収タンク(2)より導下された
揚送管(11)を前記混合室(7)内へ導入し、かつ、
前記吸気管(9)に開閉機構(10)を附設してなる固
液吸込揚送装置。 【第2項】 第1項記載の固液吸込揚送装置における真
空発生装置(1)を駆動して、吸気管(9)の開閉バル
ブ(10)の閉操作により固液回収タンク(2)と共に
揚送管(11)および混合室(7)内を負圧状態とな
し、供液源(6)における固液を固液吸込口(8)より
揚送管(11)および混合室(7)内へ一定量吸引させ
たのち、吸気管(9)の開閉機構(10)の開操作によ
り揚送管(11)および混合室(7)内の負圧力を破壊
させ、吸気管(9)から流入する外気を揚送管(11)
および混合室(7)内の固液に混合させて空気流により
揚送管(11)および混合室(7)内の固液を固液回収
タンク(2)内へ揚送させ、上記開閉機構(10)の開
閉操作を反復させることにより供液源(6)の固液を逐
次断続的に固液回収タンク(2)内へ揚送させることを
特徴とする固液吸込揚送装置の使用方法。What is claimed is: 1. A mixing chamber (7) in which a solid-liquid suction port (8) opened in a liquid supply source (6) and an intake pipe (9) opened in the atmosphere are brought together. ) And introducing a pumping pipe (11) guided from a solid-liquid recovery tank (2), which has a negative pressure by the operation of the vacuum generator (1), into the mixing chamber (7), and
A solid-liquid suction pumping device comprising an opening / closing mechanism (10) attached to the intake pipe (9). [Claim 2] The solid-liquid recovery tank (2) is operated by driving the vacuum generating device (1) in the solid-liquid suction pumping device according to the first paragraph and closing the opening / closing valve (10) of the intake pipe (9). Along with this, the inside of the pumping pipe (11) and the mixing chamber (7) is kept in a negative pressure state, and the solid-liquid in the liquid supply source (6) is pumped from the solid-liquid suction port (8) to the pumping pipe (11) and the mixing chamber (7). ), A negative pressure in the pumping pipe (11) and the mixing chamber (7) is destroyed by opening the opening / closing mechanism (10) of the intake pipe (9), and the intake pipe (9) is closed. External air flowing in from the pump (11)
And the solid-liquid in the mixing chamber (7) is mixed with the air flow to lift the solid-liquid in the pumping pipe (11) and the mixing chamber (7) into the solid-liquid recovery tank (2), and the opening / closing mechanism is used. Use of a solid-liquid suction pumping device characterized by sequentially and intermittently pumping the solid-liquid of the liquid supply source (6) into the solid-liquid recovery tank (2) by repeating the opening and closing operation of (10). Method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13180592A JPH07103199A (en) | 1992-04-23 | 1992-04-23 | Solid-liquid sucking and pumping device and its usage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13180592A JPH07103199A (en) | 1992-04-23 | 1992-04-23 | Solid-liquid sucking and pumping device and its usage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07103199A true JPH07103199A (en) | 1995-04-18 |
Family
ID=15066526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13180592A Pending JPH07103199A (en) | 1992-04-23 | 1992-04-23 | Solid-liquid sucking and pumping device and its usage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07103199A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008030021A (en) * | 2006-07-05 | 2008-02-14 | Ebara Corp | Sand pumping and transporting apparatus and sand pumping and transporting method |
-
1992
- 1992-04-23 JP JP13180592A patent/JPH07103199A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008030021A (en) * | 2006-07-05 | 2008-02-14 | Ebara Corp | Sand pumping and transporting apparatus and sand pumping and transporting method |
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