JP3517014B2 - Sludge wicking device - Google Patents
Sludge wicking deviceInfo
- Publication number
- JP3517014B2 JP3517014B2 JP05134295A JP5134295A JP3517014B2 JP 3517014 B2 JP3517014 B2 JP 3517014B2 JP 05134295 A JP05134295 A JP 05134295A JP 5134295 A JP5134295 A JP 5134295A JP 3517014 B2 JP3517014 B2 JP 3517014B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- air
- mixing chamber
- water
- chamber
- 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
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
【0001】
【産業上の利用分野】この発明は、港湾、河川、溜池、
水路等に堆積したヘドロを浚渫する吸上装置に関する。
【0002】
【従来の技術】堆積したヘドロを除去する従来の浚渫装
置は、台船に角度可変となるよう装着したラダーの先端
に回転可能なカッターを取付け、台船上に設置した吸引
ポンプの吸上パイプの先端をカッターの直上に臨ませ、
台船の移動によるカッターの回転でヘドロを掻上げ、こ
れを吸引ポンプの吸上により水と共に吸上げる構造にな
っている。
【0003】
【発明が解決しようとする課題】ところで、ヘドロの吸
上げに真空吸引ポンプを使用すると、ヘドロと真空部分
の分離等、付帯設備が必要になり、設備コストが高くつ
くと共に、水深に比例して大型のポンプが必要になり、
稼働コストも高くなるという問題がある。
【0004】また、カッターで掻上げたヘドロを真空吸
引によって吸上げる方法は、水の吸引量が多く、その分
ヘドロの吸引量が低下し、ヘドロが水中に拡散して水質
を悪化させるという問題もある。
【0005】そこで、この発明の課題は、ヘドロの吸上
げが真空吸引ポンプを使用することなく行なえるように
し、設備及び稼働コストの低減が図れると共に、ヘドロ
を確実に効率よく吸上げることができる吸上装置を提供
することにある。
【0006】
【課題を解決するための手段】上記のような課題を解決
するため、この発明は、ヘドロ吸上管の下端に、上部が
該吸上管と連通して下端が開口し、ヘドロと水をエヤで
混合する混合室と、この混合室の外周に混合室を囲んで
下端が開口し、エヤ供給管が接続されたエヤカーテン室
とを設け、前記混合室とエヤカーテン室の下部位置にヘ
ドロを掻寄せる回転羽根を設け、混合室内にエヤ噴射ノ
ズルと、このノズルから噴射されたエヤの反射部とを設
け、前記ヘドロ吸上管内にエヤリフト用のノズルを設け
た構成を採用したものである。
【0007】
【作用】ヘドロ吸上管を水中に挿入し、下端の混合室を
ヘドロ上に位置させた状態で、エヤカーテン室内にエヤ
を供給して該室内の浸水を防ぎ、エヤ噴射ノズルとエヤ
リフト用のノズルからエヤを噴射し、回転羽根を回転さ
せながら装置全体を水平方向に移動させる。
【0008】水中への挿入により、混合室内及びヘドロ
吸上管内に水が浸入し、混合室内において、噴射ノズル
から噴射されたエヤは、反射部への当接により反射して
水を攪拌すると共に、吸上管のノズルから上向きに噴射
されるエヤによって吸上管内に水の上昇流が生じる。
【0009】回転羽根は、回転と装置の移動によってヘ
ドロを掻寄せると共に、吸上管内に生じた上昇水流によ
って混合室の下端開口に吸引力が生じ、回転羽根で掻寄
せられたヘドロは混合室の直下において水と共に混合室
内に吸引される。
【0010】混合室内に入ったヘドロは、混合室に噴射
されるエヤの乱流によって水と攪拌され、流動性がよく
なった状態で吸上管内に吸込まれ、エヤリフトによって
取出される。
【0011】
【実施例】以下、この発明の実施例を添付図面に基づい
て説明する。
【0012】図示のように、ヘドロ吸上管1は、水深に
対応できる長さを有し、台船等に設けた起伏アーム2の
先端に角度可変に取付けられ、該アーム2との間に設け
たシリンダ3によって角度を調整することができると共
に、吸上管1の上端側は水面上で水平に屈曲させ、その
端部は、図示省略したが台船上や陸上に設置されたヘド
ロ回収装置に接続もしくは直上に臨むよう配置される。
【0013】前記ヘドロ吸上管1の下端には、該吸上管
1よりも大径となる円筒状周壁4の上端に傾斜上壁5を
設けて形成され、その傾斜上壁5の上端を吸上管1に連
通接続すると共に下端が開口し、ヘドロと水をエヤで混
合する混合室6が設けられ、この混合室6の外周に混合
室6を囲んで下端が開口するエヤカーテン室7が設けら
れている。
【0014】このエヤカーテン室7は、図1と図3の如
く、上壁9と周壁8により、各コーナ部分が円弧状とな
る平面三角形状に形成され、周壁8の下端は、混合室4
の下端よりも少し下方に突出している。
【0015】上記エヤカーテン室7には、その内部にエ
ヤを吹込むエヤ供給管10が接続され、水中においてエ
ヤカーテン室7にエヤを供給することにより、該室7内
への浸水を防いで中空状態を維持するようになってい
る。
【0016】前記混合室6からエヤカーテン室7にわた
る下部の位置に、ヘドロを掻寄せる複数の回転羽根11
が設けられている。
【0017】この回転羽根11は、エヤカーテン室7内
で混合室6の周壁部分に垂直状態で取付けた回転軸12
の下端に固定され、固定基部から三方へ腕13が弧状と
なって突出する平面形状に形成され、腕13は図3のよ
うに、上端面が混合室6の下端縁に近接し、下端面がエ
ヤカーテン室7の下端よりも下方に突出した上下高さ寸
法を有し、エヤカーテン室7上に設置したモータ14で
回転軸12を駆動することにより回転することになる。
【0018】図示の場合、回転羽根11は、エヤカーテ
ン室14の各コーナ部分の内側三箇所の位置に配置し、
エヤカーテン室7で囲まれた部分の内部で互に回転する
ようにし、腕13が混合室6の直下を回動通過するよう
にしたが、回転羽根11の数と配置はヘドロの掻取り効
果を考えて自由に選択すればよい。
【0019】前記混合室6の内部には、周壁4の内周面
に沿って環状のエヤ管路15を固定し、この管路15に
混合室6の外部からエヤ供給管(図示省略)が接続さ
れ、管路15の下部に複数のエヤ噴射ノズル16がエヤ
を混合室6の下部中央に向けて噴出するよう傾斜状の配
置で固定されている。
【0020】この混合室6の内側で下端部の位置に、ヘ
ドロ及び水の通過が可能な空間を有する簀子部材17が
固定され、該部材17の中央上面位置に、エヤ噴射ノズ
ル16から斜め下向きに噴射されたエヤが衝突し、この
エヤを斜上向きに反射させる円形平板状の反射部18が
設けられている。
【0021】また、ヘドロ吸上管1の内部で下端部寄り
の位置に、吸上管1の外部から供給されたエヤを斜め上
向きに噴射するエヤリフト用のノズル19が複数個円状
に配置されている。
【0022】この発明の吸上装置は上記のような構成で
あり、次に、ヘドロの浚渫を行なう方法を説明する。
【0023】図1のように、ヘドロ吸上管1を略垂直に
保持して水中に挿入し、下端の回転羽根11をヘドロA
上に設置する。この状態でエヤカーテン室7内に圧力エ
ヤを供給し、該室7内のエヤ圧力を高めることにより、
浸入している水を押し出し、水面が混合室6の下端縁の
高さに見合うように圧力を保持する。また、混合室6内
からヘドロ吸上管1の内部には表水面の高さまで水が浸
入することになる。
【0024】この状態で噴射ノズル16から混合室6内
の下部中央に向けてエヤを噴出すると同時に吸上管1の
ノズル19から斜上向きにエヤを噴出する。これによ
り、吸上管1内の水はエヤリフトされて上昇し、上端に
向けて流出するため、混合室6内には下端開口から上方
に向けての水の流れが発生する。
【0025】混合室6内では、噴射ノズル16から噴出
したエヤが反射部18に当って斜上向きに反射し、更に
周壁4の内面等に当って反射することにより、エヤと上
昇水流とは攪拌混合する。
【0026】上記の状態で図3に矢印で示すように、各
回転羽根11を各々回転させると共に、装置全体を水平
移動させると、各回転羽根11は、回転と移動により腕
13でヘドロを掻寄せて混合室6の直下に運び込む。
【0027】混合室6の下端には、エヤリフトによる吸
上管1内の水の上昇流出により吸引力が発生しているた
め、混合室6の直下に運び込まれたヘドロは水と共に混
合室6内に吸込まれる。
【0028】混合室6内には、前記したように、エヤが
噴射されているため、水とエヤ及びヘドロとは確実に混
合され、ヘドロは水中に拡散することにより流動性が良
くなり、この水とエヤ及びヘドロの混合物は混合室6を
通って吸上管1内に吸引され、吸上管1内を上昇した後
回収装置に供給される。
【0029】上記回転羽根11によるヘドロAの掻寄せ
時において、腕13がエヤカーテン室7の直下を回動す
る範囲は、エヤカーテンによるエヤ層となっているの
で、上部から回転羽根11に水が取り込まれたり、ヘド
ロが上方に逃げる確率が少なくなり、混合室6によるヘ
ドロの吸引効率が向上するという利点がある。
【0030】このように、装置全体を移動させることに
より、回転羽根11の最大配置幅をもって、ヘドロを吸
引除去することができ、回収装置では、水とヘドロの混
合物を脱水分離することにより、ヘドロだけを効率よく
取出すことができる。
【0031】
【発明の効果】以上のように、この発明によると、ヘド
ロと水を噴射エヤで攪拌した後エヤリフトによって吸上
げるようにしたので、ヘドロの浚渫がエヤの噴射だけで
行なえ、真空ポンプの使用が不要になり、設備コストの
低減が可能になると共に、混合室において、ヘドロとエ
ヤ及び水を混合するので、ヘドロの流動性が向上し、エ
ヤリフトによるヘドロの搬送が円滑に行なえる。
【0032】また、回転羽根が混合室の外側を回動する
部分の直上をエヤカーテン室とすることにより、水の取
込み及びヘドロの上方への逃げを防止でき、ヘドロの吸
上げ効率を向上させることができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harbor, a river, a pond,
The present invention relates to a wicking device for dredging sludge accumulated in waterways and the like. 2. Description of the Related Art A conventional dredging device for removing accumulated sludge is equipped with a rotatable cutter at the tip of a ladder mounted on a barge so as to be variable in angle, and a suction pump installed on the barge. With the tip of the upper pipe facing just above the cutter,
The sludge is lifted up by the rotation of the cutter by the movement of the barge, and the sludge is sucked up with water by the suction pump. [0003] When a vacuum suction pump is used for suctioning sludge, additional equipment such as separation of sludge and a vacuum portion is required, which increases equipment costs and increases the water depth. Proportionally larger pumps are needed,
There is a problem that operating costs also increase. Further, the method of sucking sludge picked up by a cutter by vacuum suction involves a problem that the amount of sucked water is large, the amount of sucked sludge is reduced by that amount, and the sludge is diffused into the water to deteriorate water quality. There is also. Accordingly, an object of the present invention is to make it possible to suck sludge without using a vacuum suction pump, to reduce equipment and operating costs, and to surely and efficiently suck sludge. It is to provide a wicking device. SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a sludge suction pipe having a lower end opening at the lower end thereof in communication with the suction pipe, and a sludge lowering opening. And a mixing chamber for mixing water with air, and an air curtain chamber connected to the outer periphery of the mixing chamber, the lower end of which is open around the mixing chamber, and an air supply pipe is connected. Rotating blades for scraping the sludge are provided, an air jet nozzle is provided in the mixing chamber, and a reflection portion of the air jetted from the nozzle is provided, and a nozzle for the air lift is provided in the sludge suction pipe. is there. With the sludge suction pipe inserted into the water and the mixing chamber at the lower end positioned above the sludge, air is supplied into the air curtain chamber to prevent water from entering the chamber, and the air jet nozzle and the air lift Air is ejected from the nozzles for use, and the entire apparatus is moved in the horizontal direction while rotating the rotating blades. [0008] By the insertion into water, water infiltrates into the mixing chamber and the sludge suction pipe, and in the mixing chamber, the air jetted from the jet nozzle is reflected by the contact with the reflecting portion to agitate the water. The upward flow of water occurs in the suction pipe due to the air jetted upward from the nozzle of the suction pipe. The rotating blades rake the sludge by rotation and movement of the apparatus, and the rising water flow generated in the suction pipe generates a suction force at the lower end opening of the mixing chamber. Is sucked into the mixing chamber together with the water just below. The sludge that has entered the mixing chamber is stirred with water by the turbulence of the air injected into the mixing chamber, is sucked into the suction pipe in a state of improved fluidity, and is removed by the air lift. Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in the figure, a sludge suction pipe 1 has a length corresponding to the depth of water, and is attached to a tip of an undulating arm 2 provided on a barge or the like so as to be variable in angle. The angle can be adjusted by the cylinder 3 provided, and the upper end side of the suction pipe 1 is bent horizontally on the water surface, and its end is not shown in the figure but is installed on a barge or land. It is arranged so as to be connected to or directly above. At the lower end of the sludge suction pipe 1, an inclined upper wall 5 is formed at the upper end of a cylindrical peripheral wall 4 having a diameter larger than that of the suction pipe 1, and the upper end of the inclined upper wall 5 is formed. A mixing chamber 6 communicating with the suction pipe 1 and having a lower end opened is provided, and a mixing chamber 6 for mixing sludge and water by air is provided. An air curtain chamber 7 surrounding the mixing chamber 6 and having an open lower end is provided around the mixing chamber 6. Is provided. As shown in FIGS. 1 and 3, the air curtain chamber 7 is formed by an upper wall 9 and a peripheral wall 8 into a plane triangular shape in which each corner is formed in an arc shape.
Projecting slightly below the lower end of the. An air supply pipe 10 for blowing air into the interior of the air curtain chamber 7 is connected to the air curtain chamber 7 to supply air to the air curtain chamber 7 in water, thereby preventing water from entering the interior of the air curtain chamber 7 and forming a hollow state. Is to be maintained. A plurality of rotating blades 11 for scraping sludge are located at a lower position extending from the mixing chamber 6 to the air curtain chamber 7.
Is provided. The rotary blades 11 are attached to a rotary shaft 12 vertically mounted on the peripheral wall of the mixing chamber 6 in the air curtain chamber 7.
The arm 13 is formed in a planar shape in which the arm 13 protrudes in an arc shape from the fixed base in three directions, and the upper end surface of the arm 13 is close to the lower end edge of the mixing chamber 6 as shown in FIG. Has a vertical height projecting below the lower end of the air curtain chamber 7, and is rotated by driving the rotary shaft 12 by a motor 14 installed on the air curtain chamber 7. In the case shown in the figure, the rotating blades 11 are arranged at three positions inside each corner of the air curtain chamber 14,
Although the arms 13 are rotated so as to rotate within the area surrounded by the air curtain chamber 7 and the arm 13 is rotated just below the mixing chamber 6, the number and arrangement of the rotating blades 11 reduce the sludge scraping effect. Think freely and choose. Inside the mixing chamber 6, an annular air pipe 15 is fixed along the inner peripheral surface of the peripheral wall 4, and an air supply pipe (not shown) is connected to the pipe 15 from outside the mixing chamber 6. A plurality of air jet nozzles 16 are connected to a lower portion of the pipe 15 and are fixed in an inclined arrangement so as to jet air toward the lower center of the mixing chamber 6. At the lower end of the mixing chamber 6, a pen holder 17 having a space through which sludge and water can pass is fixed. An air jet is applied to the surface of the light emitting device, and a reflecting portion 18 in the form of a circular plate is provided to reflect the air obliquely upward. A plurality of nozzles 19 for an air lift for injecting air supplied from the outside of the suction pipe 1 obliquely upward are arranged in a circle near the lower end inside the sled suction pipe 1. ing. The suction device of the present invention has the above-described configuration. Next, a method of dredging sludge will be described. As shown in FIG. 1, the sludge wicking pipe 1 is held substantially vertically and inserted into water, and the lower rotating blade 11 is sludge A
Install on top. In this state, a pressure air is supplied into the air curtain chamber 7 to increase the air pressure in the chamber 7,
The intruding water is pushed out, and the pressure is maintained so that the water level matches the height of the lower edge of the mixing chamber 6. In addition, water infiltrates from the mixing chamber 6 to the inside of the sludge suction pipe 1 up to the level of the surface water. In this state, air is ejected from the injection nozzle 16 toward the center of the lower portion in the mixing chamber 6, and at the same time, air is ejected obliquely upward from the nozzle 19 of the suction pipe 1. As a result, the water in the suction pipe 1 is lifted by an air lift and rises and flows out toward the upper end, so that a flow of water is generated in the mixing chamber 6 upward from the lower end opening. In the mixing chamber 6, the air jetted from the jet nozzle 16 hits the reflecting portion 18 to be reflected obliquely upward, and further hits the inner surface of the peripheral wall 4 so that the air and the rising water flow are stirred. Mix. In the above state, as shown by arrows in FIG. 3, when each rotating blade 11 is rotated and the whole apparatus is horizontally moved, each rotating blade 11 scrapes sludge with the arm 13 by rotation and movement. And brought directly below the mixing chamber 6. At the lower end of the mixing chamber 6, a suction force is generated by the upward and outflow of water in the suction pipe 1 by an air lift, and the sludge carried immediately below the mixing chamber 6 is mixed with water in the mixing chamber 6. Sucked into. As described above, since the air is injected into the mixing chamber 6, the water, the air and the sludge are surely mixed, and the sludge diffuses into the water to improve the fluidity. The mixture of water, air and sludge is sucked into the suction pipe 1 through the mixing chamber 6, and is supplied to the recovery device after rising inside the suction pipe 1. When the sled A is raked by the rotating blades 11, the range in which the arm 13 rotates just below the air curtain chamber 7 is an air layer formed by the air curtain, so that water is taken into the rotating blades 11 from above. There is an advantage that the probability of sludge or sludge escaping upward is reduced, and the efficiency of suction of sludge by the mixing chamber 6 is improved. In this way, by moving the entire apparatus, sludge can be suctioned and removed with the maximum arrangement width of the rotary blades 11, and the recovery apparatus dehydrates and separates a mixture of water and sludge to remove sludge. Can be extracted efficiently. As described above, according to the present invention, the sludge and water are stirred by the jet air and then sucked up by the air lift, so that the dredging of the sludge can be performed only by the jet of the air, and the vacuum pump is provided. This eliminates the need for the use of slag, reduces equipment costs, and mixes sludge with air and water in the mixing chamber, thereby improving the flowability of sludge and facilitating the transport of sludge by an air lift. In addition, the air curtain chamber is provided immediately above the portion where the rotating blades rotate outside the mixing chamber, so that the intake of water and the escape of sludge can be prevented, and the efficiency of sucking sludge can be improved. Can be.
【図面の簡単な説明】 【図1】この発明に係る吸上装置の縦断正面図 【図2】同上要部を拡大した縦断正面図 【図3】同上要部を拡大した底面図 【図4】図2の矢印IV−IVに沿う横断平面図 【符号の説明】 1 吸上管 6 混合室 7 エヤカーテン室 11 回転羽根 13 腕 16 噴射ノズル 18 反射部 19 ノズル[Brief description of the drawings] FIG. 1 is a longitudinal sectional front view of a suction device according to the present invention. FIG. 2 is a longitudinal sectional front view in which main parts of the above are enlarged. FIG. 3 is a bottom view in which main parts of the above are enlarged. FIG. 4 is a cross-sectional plan view taken along arrow IV-IV in FIG. [Explanation of symbols] 1 Suction tube 6 Mixing room 7 Air curtain room 11 rotating blades 13 arms 16 injection nozzle 18 Reflector 19 nozzle
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) E02F 3/88 E02F 3/92 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) E02F 3/88 E02F 3/92
Claims (1)
と連通して下端が開口し、ヘドロと水をエヤで混合する
混合室と、この混合室の外周に混合室を囲んで下端が開
口し、エヤ供給管が接続されたエヤカーテン室とを設
け、前記混合室とエヤカーテン室の下部位置にヘドロを
掻寄せる回転羽根を設け、混合室内にエヤ噴射ノズル
と、このノズルから噴射されたエヤの反射部とを設け、
前記ヘドロ吸上管内にエヤリフト用のノズルを設けたヘ
ドロの吸上装置。(1) A mixing chamber for mixing sludge and water by air at the lower end of the sludge suction pipe, the upper part of which communicates with the suction pipe. A lower end is opened around the mixing chamber around the mixing chamber, the lower end is opened, and an air curtain chamber to which an air supply pipe is connected is provided.Rotating blades for scraping sludge are provided at lower positions of the mixing chamber and the air curtain chamber. An air jet nozzle and a reflection portion of the air jetted from the nozzle are provided,
A sludge wicking device provided with an air lift nozzle in the sludge wicking pipe.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05134295A JP3517014B2 (en) | 1995-03-10 | 1995-03-10 | Sludge wicking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05134295A JP3517014B2 (en) | 1995-03-10 | 1995-03-10 | Sludge wicking device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08246496A JPH08246496A (en) | 1996-09-24 |
JP3517014B2 true JP3517014B2 (en) | 2004-04-05 |
Family
ID=12884265
Family Applications (1)
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JP05134295A Expired - Fee Related JP3517014B2 (en) | 1995-03-10 | 1995-03-10 | Sludge wicking device |
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Families Citing this family (3)
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KR101142225B1 (en) * | 2011-11-23 | 2012-05-07 | 정호룡 | Mixing hood apparatus for dehydrating processing system |
CN106836006B (en) * | 2017-04-22 | 2018-08-07 | 安徽省公路工程建设监理有限责任公司 | A kind of automatic spouting plant for tunnel bridge construction |
CN112253473A (en) * | 2020-10-30 | 2021-01-22 | 宁波锦瑄环保科技有限公司 | Improved sewage pump |
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1995
- 1995-03-10 JP JP05134295A patent/JP3517014B2/en not_active Expired - Fee Related
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JPH08246496A (en) | 1996-09-24 |
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