JPS5891237A - Suction nozzle of dredger - Google Patents
Suction nozzle of dredgerInfo
- Publication number
- JPS5891237A JPS5891237A JP18534681A JP18534681A JPS5891237A JP S5891237 A JPS5891237 A JP S5891237A JP 18534681 A JP18534681 A JP 18534681A JP 18534681 A JP18534681 A JP 18534681A JP S5891237 A JPS5891237 A JP S5891237A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- sand
- suction
- suction nozzle
- water
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
- E02F3/9243—Passive suction heads with no mechanical cutting means
- E02F3/925—Passive suction heads with no mechanical cutting means with jets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、揚水積場などの沈砂池に沈澱した砂泥を除去
する装置Ｋｉ！１．’ｌＩに固化したヘドロや。DETAILED DESCRIPTION OF THE INVENTION The present invention is a device Ki! for removing sand and mud deposited in a sand settling pond such as a pumping storage area. 1. The sludge that solidified into 'lI.
６オオムい、□オ、。浚、よ□ヶ、□７ズルに関するも
のである。6 Ohm, □Oh. It is related to ``dru'', ``yo□ga'', and □7zuru.
第１図は、従来技術による浚渫装置の構造図の１例で、
１はすンドボンプ、２はサクションパイプ；３はサクシ
ョンノズルで、その前方にはノズルパイプ３龜が取付け
てあ＃）、その端部には吸泥口３ｂが形成されている。Figure 1 is an example of a structural diagram of a dredging device according to the prior art.
1 is a suction pump; 2 is a suction pipe; 3 is a suction nozzle; a nozzle pipe (3) is attached to the front thereof; a suction port (3b) is formed at the end thereof.
４は送泥管で、吸泥口３ｂから吸引された土砂を、浚渫
し九土砂９Ｃの位置迄圧送する役目を持つ、 ＳＦｉ給
水ポンプで、吸水バイブロを介して吸上げ丸木を、送水
パイプ７送水ホース８を経て、噴射ノズル８畠に設けた
噴射口８ｂから、大量の水を高圧で、堆積した土砂９１
０表面に噴射させ、水の噴流で固化した土砂の表面を１
１）起し、この掘シ起し作用によって十分に水と混合さ
れ、泥水状となって吸泥口附近に漂う土砂を、吸泥口３
ｂから吸引するのがサンドポンプを応用す石渡渫装置の
一般的な方法である。セしてこれらの装置では、サクシ
ョンノズル８ｍはストレートの１本ンズルで、浚渫のた
めめノズルの移動方向は、ノズルの軸線の方向即ち矢印
方向に行われ、且つ噴射口８ｂから噴出すゐ水の噴流の
方向も概ねノズルの吸泥口の方向に向っているから次の
ような欠点があった。即ち。4 is a mud feeding pipe, which has the role of dredging the soil sucked in from the mud suction port 3b and pressurizing it to the position of 9 earth sand 9C.The SFi water supply pump sucks up the logs through the water suction vibro, and sends it to the water pipe 7. Through the water supply hose 8, a large amount of water is pumped under high pressure from the injection port 8b provided at the injection nozzle 8, and the accumulated sediment 91 is
0 surface, and the surface of the earth and sand solidified by the water jet is 1
1) Raise the earth and sand that is sufficiently mixed with water by this digging action and becomes muddy water and floats around the mud suction port 3.
A common method for Ishiwatari pumping equipment that uses a sand pump is to suck water from b. In these devices, the suction nozzle 8m is a single straight suction nozzle, and the movement direction of the suction nozzle for dredging is in the direction of the axis of the nozzle, that is, in the direction of the arrow, and the water ejected from the injection port 8b is Since the direction of the jet flow is generally directed toward the suction port of the nozzle, there are the following drawbacks. That is.
Ｌ 吸泥口附近の土砂は、噴流によって十分にかく拌さ
れた状態にあるから、吸引され九土砂の容積濃度は低下
する。Since the sediment near the L suction port is sufficiently stirred by the jet stream, it is sucked in and the volumetric concentration of the sediment decreases.
２ サクションノズルは、１本のストレートノズルであ
るから、ノズル口附近の限られた部分の土砂のみ吸引す
るので能率が悪い。2. Since the suction nozzle is a single straight nozzle, it is inefficient because it only sucks dirt and sand from a limited area around the nozzle mouth.
本発明の目的は、前述した従来ノズルの欠点を除去し１
同化したヘドロや粘度質土砂など、水中に於ける流動性
に乏しい土砂を最４効率良く波源可能な、浚渫装置のサ
クションノズルを提供するＫある。The purpose of the present invention is to eliminate the drawbacks of the conventional nozzle mentioned above.
The present invention provides a suction nozzle for a dredging device that can efficiently source soil with poor fluidity in water, such as assimilated sludge and viscous soil.
本発明の特徴とするところは、サンドポンプに。The feature of the present invention is that it is a sand pump.
サクシ目ンホース、およびサクションノズルを取付け、
サクションノズルから吸上げた土砂を、送泥管を介して
遠方に排出するように構成された浚渫装置において、サ
クションノズルの進行方向に対して前方に水の噴射用ノ
ズルを取付け、水の噴射で土砂を連続的に掘シ崩しなが
ら、サクションパイプて吸引するように構成したもので
ある。Install the suction hose and suction nozzle,
In a dredging device configured to discharge earth and sand sucked up from a suction nozzle to a distant place via a mud pipe, a water injection nozzle is installed in front of the suction nozzle in the direction of movement, and a water injection nozzle is installed in front of the suction nozzle. It is constructed so that the earth and sand are continuously dug up and suctioned by suction pipes.
以下本発明の一実施例を第２図〜第５図によシ説明する
。An embodiment of the present invention will be explained below with reference to FIGS. 2 to 5.
第２図は本発明による浚渫装置の全体配置図で。FIG. 2 is an overall layout diagram of the dredging device according to the present invention.
サクションノズル、および水の噴射用ノズルの構造およ
び機能以外は従来の浚渫装置と大差のないものとなって
いるのでここでは、サクションノズルおよび噴射ノズル
についてのみ説明する。Except for the structure and function of the suction nozzle and the water injection nozzle, there is no major difference from conventional dredging equipment, so only the suction nozzle and the injection nozzle will be described here.
第３図（１）、 （ｂ）、 （Ｃ）は１本発明によるサ
クションノズル１０の説明図で、側面図、正面図、Ｂ−
Ｂ線断面図を夫々示しである。ノズルｌＯの全体は、第
３図（荀に示すように鉤形に屈曲し、サクションノズル
ｌＯを矢印方向にけん引する時は堆積土砂に対して−な
る掘シ起し角を附与しであるので。3(1), (b), and (C) are explanatory views of the suction nozzle 10 according to the present invention, including a side view, a front view, and a B-
A sectional view taken along the line B is shown. The entire nozzle 10 is bent into a hook shape as shown in Figure 3 (Xu), and when the suction nozzle 10 is towed in the direction of the arrow, it gives a negative angle to the accumulated earth and sand. So.
固化し九土砂を掘シ起すのに効果がある。It is effective in digging up solidified sand.
また、ノズルパイプ１０ｍは複数個で構成し。Moreover, the nozzle pipe 10m is composed of multiple pieces.
第３図工面図に示すように、１個のノズルパイプ１０ｍ
に１個の噴射用ノズル１１Ｍを配置して固定し１両者一
体になるように構成する。ノズルパイプｌＯ畠と噴射用
ノズルｌ１ｍとの関係位置を第３図（Ｃ）に示す。As shown in Drawing 3 construction plan, one nozzle pipe 10m
One injection nozzle 11M is disposed and fixed to the two so that the two are integrated. The relative position of the nozzle pipe 10 and the injection nozzle l1m is shown in FIG. 3(C).
噴射用ノズル１１Ｍの夫々には、下方およびノズルの進
行方向（矢印方向）、何方に多数の水を噴射するための
噴射口１２を設け、夫々の噴射口１２からは、圧力水を
噴流１３となって噴出する。Each of the injection nozzles 11M is provided with an injection port 12 for injecting a large number of water downward and in the direction of movement of the nozzle (in the direction of the arrow). It erupts.
このようにして、サクションノズルを圧力水を噴出しつ
つ固化した砂泥層上をけん引するときは。In this way, when the suction nozzle is towed over a solidified sand and mud layer while jetting out pressurized water.
噴流１３によって、サクションノズル周囲の固化した砂
泥は、噴流１３によって、自己崩壊する程度に迄細断さ
れ、吸泥口１０ｂに吸引除去され。The solidified sand and mud around the suction nozzle is shredded by the jet 13 to the extent that it self-disintegrates, and is suctioned and removed by the suction port 10b.
高さＨ１巾Ｂなる掘削溝を成形する。An excavated groove with a height of H1 and a width of B is formed.
この状況の詳細を、第４図および第５図によって説明す
る。圧力水の噴射用ノズル１ｉｓｔに設けられた複数個
の噴射口１２のうち、下方に設けた噴射口１２は、噴流
を下方に向けて噴射して、サクションノズル下方の土砂
を掘り起し、サクションノズル全体を、急速に所望の深
さに沈降させる役目を持つ。また前方および側方に設け
た噴射口１２は、水平に対しα度下向きに開口している
から、噴流１３によって掘シ起された土砂流は堆積土砂
層の表面に鍔上ることなく、常に下方に向って流動する
ように方向付けられ、且つサクションノズルの前進に従
って、その前方および側方に。Details of this situation will be explained with reference to FIGS. 4 and 5. Among the plurality of injection ports 12 provided in the pressure water injection nozzle 1ist, the injection port 12 provided at the lower side injects a jet stream downward to dig up the earth and sand below the suction nozzle. Its role is to rapidly sink the entire nozzle to the desired depth. In addition, since the injection ports 12 provided at the front and sides are opened downward at α degrees with respect to the horizontal, the sediment flow excavated by the jet flow 13 does not rise to the surface of the sediment layer, but always downwards. and, as the suction nozzle advances, forward and to the sides thereof.
掘シ起しによって連続した空洞１４を形成する。A continuous cavity 14 is formed by digging and raising.
これらの空洞が発達し大きくなると、残り九地山の部分
は、自重に耐えられなくなり、第５図に示すように、空
洞１４部分は自然に崩落し、吸泥口１０ｂよ）＠引除去
される。ここに於て、噴流１３の水量を吸泥口１０ｂか
らの吸込水量に比較して、適当量少なくなるように調節
するときは。As these cavities develop and become larger, the remaining nine parts of the mountain become unable to withstand their own weight, and as shown in Figure 5, the 14 cavities naturally collapse and are removed by the suction port 10b. Ru. Here, when adjusting the amount of water in the jet stream 13 to be an appropriate amount smaller than the amount of water sucked in from the suction port 10b.
噴流１３によって掘シ起された土砂は、泥流となって、
ａ泥口に向って流動し、掘り起しＫよって生ずる土砂の
掻廻しを最小限に押えることができるから、吸入土砂の
濃度を高濃度に維持することが可能となる。The earth and sand dug up by the jet 13 becomes a mudflow,
Since it flows toward the mud opening and the stirring of the earth and sand caused by the digging K can be suppressed to a minimum, it becomes possible to maintain the concentration of the sucked earth and sand at a high concentration.
以上述べたように１本発明によるサクションノズルは。As mentioned above, there is one suction nozzle according to the present invention.
草、 掘シ起し角＃による掘シ起し作用が可能となる。Grass, the digging action by the digging angle # becomes possible.
２ 複数の噴射用ノズルと、噴射口の組合せにょる巾広
浚渫が可能となる。2. Wide dredging becomes possible by combining multiple injection nozzles and injection ports.
λ 圧力噴流による。土砂堆積層の深部に於ける積極的
な掘り起し、切崩し作用による、急速な崩落作用を促進
することができる。λ By pressure jet. It is possible to promote rapid collapse by active digging and cutting in the deep part of the sediment layer.
表 サクションノズルは、進行方向前方に設けた噴射用
ノズルの水噴射による土砂の崩落量と。Table: The suction nozzle is the amount of soil and sand that falls due to the water jet from the jet nozzle installed at the front in the direction of travel.
ノズルの前進速度をマツチさせることによシ。By matching the forward speed of the nozzles.
粘土質の多い固化したヘドロ等でも、連続的に浚渫する
ことが可能となる。This makes it possible to continuously dredge even solidified sludge with a high clay content.
第１図は従来の浚渫装置の概略図、第２図は本発明によ
る浚渫装置の一実施例の概略図、第３図（ａ）、 （時
、 （Ｃ）は本発明によるノズル部の詳細図で。
第３図（１１）は側面図、第３図（荀は正面図、第３図
（Ｃ）はＢ−Ｂ線断面図、第４図、第５図は本発明のサ
クションノズルによる浚渫状況を示すもので、第４図は
浚渫初期を、第５図は浚渫中期を示す図である。
１・・・サンドポンプ、２・・・サクションパイプ、４
・・・送泥管、５・・・送水ポンプ、６・・・吸水パイ
プ％７・・・送水パイプ、８・・・送水ホース、１０・
・・サクションノズル、１０１・・・ノズル部くイブ、
１０ｂ・・・吸泥口。
１１畠・・・噴射用ノズル、１２・・・噴射口、１３−
・・噴流。
代理人 弁理士 薄田利幸
′ｆＪｒ 図
ＭＺ 図
１ｖｉ３ 図（’ａ） ’％ ３ （ｊＪ ＜
ｂ）Ｈａ、−１０ＯＯＯ−一）ｌａ。
第４図 第 ５ 図Fig. 1 is a schematic diagram of a conventional dredging device, Fig. 2 is a schematic diagram of an embodiment of the dredging device according to the present invention, and Fig. 3 (a) and (C) are details of a nozzle part according to the present invention. In the figures. Figure 3 (11) is a side view, Figure 3 (Xu) is a front view, Figure 3 (C) is a sectional view taken along the line B-B, Figures 4 and 5 are according to the suction nozzle of the present invention. This shows the dredging situation, with Figure 4 showing the early stage of dredging and Figure 5 showing the middle stage of dredging. 1... Sand pump, 2... Suction pipe, 4
...Sludge pipe, 5.Water pump, 6.Water suction pipe%7.Water pipe, 8.Water hose, 10.
... Suction nozzle, 101... Nozzle section,
10b...Mud suction port. 11 Hatake... Injection nozzle, 12... Injection port, 13-
...Jet stream. Agent Patent Attorney Toshiyuki Usuda'fJr Figure MZ Figure 1vi3 Figure ('a) '% 3 (jJ <
b) Ha, -10OOO-1) la. Figure 4 Figure 5
Claims (1)
ションノズルを取付け、サクシロンノズルから吸上げた
土砂を、送泥管を介して遠方に噴出するように構成され
た浚渫装置において。 サクションノズルの進行方向に対して前方に水の噴射用
ノズルに増付け、水の噴射で土砂を連続的に堀シ崩しな
がら、サクションパイプで吸引するように構成したこと
を特徴とする浚渫装置のサクションノズル。 ２ 水の噴射ノズルには、下方及び前方側方に向って、
圧力水を噴射する複数個の噴射口を設けたことを特徴と
する特許請求の範囲第１項記載の浚渫装置のサクシロン
ノズル。[Claims] 1. In a dredging device configured to attach a suction hose and a suction nozzle to a sand pump, and to eject earth and sand sucked up from the suction nozzle to a distant place via a mud feeding pipe. A dredging device characterized in that a water injection nozzle is added to the front in the direction of movement of the suction nozzle, and the water is continuously disintegrated by the water injection while suction is sucked by the suction pipe. Suction nozzle. 2. The water injection nozzle has a
A saxilon nozzle for a dredging device according to claim 1, characterized in that a plurality of injection ports for ejecting pressurized water are provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18534681A JPS5891237A (en) | 1981-11-20 | 1981-11-20 | Suction nozzle of dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18534681A JPS5891237A (en) | 1981-11-20 | 1981-11-20 | Suction nozzle of dredger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5891237A true JPS5891237A (en) | 1983-05-31 |
Family
ID=16169178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18534681A Pending JPS5891237A (en) | 1981-11-20 | 1981-11-20 | Suction nozzle of dredger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5891237A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878780A (en) * | 2015-05-28 | 2015-09-02 | 中交一航局第二工程有限公司 | Timed desilting silt prevention system and method during flattening of immersed tunnel foundation bed |
| JP2022149640A (en) * | 2021-03-25 | 2022-10-07 | 株式会社日本海洋サービス | Dredging device |
-
1981
- 1981-11-20 JP JP18534681A patent/JPS5891237A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878780A (en) * | 2015-05-28 | 2015-09-02 | 中交一航局第二工程有限公司 | Timed desilting silt prevention system and method during flattening of immersed tunnel foundation bed |
| JP2022149640A (en) * | 2021-03-25 | 2022-10-07 | 株式会社日本海洋サービス | Dredging device |
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