JPS58168732A - Suction nozzle for dredger - Google Patents
Suction nozzle for dredgerInfo
- Publication number
- JPS58168732A JPS58168732A JP5133982A JP5133982A JPS58168732A JP S58168732 A JPS58168732 A JP S58168732A JP 5133982 A JP5133982 A JP 5133982A JP 5133982 A JP5133982 A JP 5133982A JP S58168732 A JPS58168732 A JP S58168732A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- suction
- suction nozzle
- sludge
- 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、特に粘性の高い粘土質を含む砂泥の浚渫に好
適な浚渫装置のサクションノズルに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a suction nozzle for a dredging device particularly suitable for dredging sand and mud containing highly viscous clay.
第１図は、従来から使用されているサクションノズルで
、１個の圧力水噴射用補助ノズル１１’から、砂泥層２
の表面に、噴流１２を噴射して、吹上げられた濃度の薄
い砂泥を吸引していたから、得られるＪｅ渫効率は３〜
４％が普通である。またサクションノズルのノズル口６
Ａの移動方向は、矢印方向即ち垂直方間に移動するので
、直径Ｄ深さＨのＲ′に状に没渫逼れる。Figure 1 shows a suction nozzle that has been used conventionally.
Since the jet stream 12 was injected onto the surface of the surface and the thin sand and mud blown up was sucked up, the obtained Je pumping efficiency was 3 to 3.
4% is normal. Also, the nozzle port 6 of the suction nozzle
Since the moving direction of A is in the direction of the arrow, that is, in the vertical direction, it sinks into R' of diameter D and depth H.
粘性の高い砂泥の場合は、自ら崩落することがなく、且
つ水中では噴流で周囲の砂泥２′を吹き上げる効果の及
ぶ範囲は極めて狭い範囲の浚渫しかできないのである。In the case of highly viscous sand and mud, it does not collapse by itself, and in water, dredging can only be done in an extremely narrow range where the jet stream can blow up the surrounding sand and mud 2'.
本発明の目的は、粘度の尚い粘土質を宮む砂泥ｔ−幼皐
良く吸引役渫するための浚渫装置のサクションノズル１
に提供するにある。The object of the present invention is to provide a suction nozzle 1 for a dredging device for effectively suctioning sand and mud depositing clay with low viscosity.
There is a lot to offer.
本発明の％徴とするところは、先ず、サクショノズル會
水平方向に移動せしめ、これによって形成６れた段ｆ一
状の砂泥層を急速に且つ広範囲に亘つーて、破下部のノ
ズル口附近に急速に崩落せしめ、効率良く吸引させるも
のである。The characteristic feature of the present invention is that first, the suction nozzle is moved in the horizontal direction, thereby rapidly and widely spreading the formed step F layer of sand and mud to the nozzle opening at the fractured part. It is designed to rapidly collapse nearby areas and efficiently suck them in.
以Ｆ１本発明の浚渫装置のサクションノズルの一実施例
を第２図〜＄５図により説明する。Hereinafter, an embodiment of the suction nozzle of the dredging device according to the present invention will be described with reference to FIGS. 2 to 5.
＃Ｉ２図〜第５図において、１は沈砂池、２は堆積した
砂泥層、３は水面、４は浚渫用サンドポンプ、５はサク
ションホース、６はサクションノズル、６Ｂはサクショ
ンノズル６のノズル口、７は送泥管、８は圧力水用補助
ポンプ、９は吸水管、１０は送水管、１１は補助ノズル
、１１Ａはノズル管である。１２は、補助ノズル１１ま
たはノズル管１１人の各々の噴口から噴出する圧力水の
噴流で、Ｘ２ａｌ＋ｌがメ（」方の噴流、１２ｂｌ−１
＋１２０、、、−、が側力の噴流、１２ｄ、−、が下方
の噴流である。#I In Figures 2 to 5, 1 is a sand settling basin, 2 is an accumulated sand and mud layer, 3 is a water surface, 4 is a sand pump for dredging, 5 is a suction hose, 6 is a suction nozzle, and 6B is a nozzle of suction nozzle 6. 7 is a mud feeding pipe, 8 is an auxiliary pump for pressure water, 9 is a water suction pipe, 10 is a water pipe, 11 is an auxiliary nozzle, and 11A is a nozzle pipe. 12 is a jet of pressure water spouted from the auxiliary nozzle 11 or each of the 11 nozzle pipes, where X2al+l is the medial jet, 12bl-1
+120, , - are side force jets, and 12d, - are downward jets.
サンドポンプ４に、サクションホース５を介して、サク
シ讐ンノズル６を連結し、サントポ／プロを運転すると
、サクションノズル口６Ｂから、砂泥２を吸引浚渫し、
サクションホース５を介して、送泥管７に送られ遠方に
排出ちれる。８は砂泥ノーを解きほぐすだめの圧力水補
助ポンプで、吸水管９から清水を吸入し、送水管１０を
経て、圧力水噴射用補助ノズル１１に送られ、七の先端
部附近に設けられた複ａ個の噴口から、噴流となって噴
出する。サクションノズル６は、浚渫のため、値ね水平
矢印方向に、理絖的に移動し、浚渫【行うものとする。When the suction nozzle 6 is connected to the sand pump 4 via the suction hose 5 and the Sanpo/Pro is operated, the sand and mud 2 is suctioned and dredged from the suction nozzle port 6B.
The slurry is sent to the slurry pipe 7 via the suction hose 5 and discharged to a distant place. 8 is a pressure water auxiliary pump for loosening sand and mud, which sucks clean water from a water suction pipe 9, passes through a water supply pipe 10, and sends it to an auxiliary nozzle 11 for pressure water injection, which is installed near the tip of 7. A jet stream is ejected from a plurality of nozzles. For dredging, the suction nozzle 6 shall move mechanically in the direction of the horizontal arrow to perform dredging.
第３図〜第５図は、サクションノズル６の詳細凶で、補
助ノズル１１は、サクションノズル６のノズル口６Ｂと
Ｎ数のノズル１ｉｌｌＡ、？持ち、ノズル口６Ｂと一対
となるように、サクションノズル６に固定烙扛る。3 to 5 show details of the suction nozzle 6, and the auxiliary nozzle 11 includes the nozzle opening 6B of the suction nozzle 6 and N number of nozzles 1illA, ? It is fixed to the suction nozzle 6 so as to form a pair with the nozzle opening 6B.
ノズルｖ１１Ａには、サクションノズル６の進行矢印方
向に対し、ｉｕ方には、圧力水の噴流１２ａｌ〜ａ＠が
、まｆｃ押ｊ方には夫々１２ｂｉ−ｓ１２ＣＩ−ｓなど
俵数条の噴流が発生するよう噴口１に１つ。ｌた下回の
方向にも噴口１２ｄ、〜、を穿つ。In the nozzle v11A, jets of pressure water 12al~a@ are in the direction of the arrow of the suction nozzle 6, and jets of several bales such as 12bi-s12CI-s are in the direction of the fc and j. One in nozzle 1 to generate. Nozzles 12d, . . . are also drilled in the direction below.
このような補助ノズル１１に、補助ポンプ８を起動して
圧力水を圧送するときは、圧力水は、ノズル’１ＩＩＩ
Ａに穿設δれた多数の噴口から、噴流 １とな
って噴出し以下に述べる幼果を出すことかできる。When starting the auxiliary pump 8 to force-feed pressure water to such an auxiliary nozzle 11, the pressure water is transferred to the nozzle '1III.
A large number of spout holes δ are drilled in A, and a jet stream 1 can be ejected to produce the young fruits described below.
サクションノズル６ケ砂泥ｔｄ上に置くときは、主とし
て下向き方向の圧力水噴射で、ノズル口６Ｂの下方の砂
泥を掘起すので、サクシ目／ノズル全体は、急速に砂泥
層深く沈降する。次にサクションノズルの進行方向（矢
印方向）に対し、前方及び側方の噴射で、サクションノ
ズル周囲の砂泥層を段層状に切断しながら矢印方向に移
動するときは、切断によって残された部分２−１及び２
−２は、自重に耐え切れず、ノズル口６Ｂ附近に急速に
崩落し、ノズル口６Ｂによって効率良く吸引される。こ
のようにして侍られる浚渫断面は第４図に示すように、
’１ｌｌｉ！Ｈｘ深さＨとなり、従来方法の直径ＤＸ深
さＨに比較して、はるかに大きくなる。従来方法では、
サクションノズルのノズル口６ＡＨ１１本ノズルで然も
圧力水の噴射は下向きのみであるから本発明のように、
複数ノズル口にし、且つ、各々のノズル口附近から前方
、側方にも圧力水ｔ−噴射する場合に比較し、噴流によ
って掘崩される範囲は小さくなるのである。When the 6 suction nozzles are placed on the sand and mud td, the sand and mud below the nozzle mouth 6B are excavated mainly by downward pressure water injection, so the entire sacrifice/nozzle quickly sinks deep into the sand and mud layer. . Next, when moving in the direction of the arrow while cutting the sand and mud layer around the suction nozzle into steps by jetting forward and sideways in the direction of movement of the suction nozzle (direction of the arrow), the part left by the cutting is 2-1 and 2
-2 cannot withstand its own weight and rapidly collapses near the nozzle port 6B, where it is efficiently sucked by the nozzle port 6B. The dredged cross section served in this way is shown in Figure 4.
'1lli! H x depth H, which is much larger than the diameter DX depth H of the conventional method. In the conventional method,
Although the suction nozzle has 6AH and 11 nozzles, the pressure water is only ejected downward, so as in the present invention,
Compared to the case where multiple nozzle ports are used and pressure water is injected forward and sideways from the vicinity of each nozzle port, the area that is undermined by the jet stream becomes smaller.
本発明によれば、粘度の高い粘土質を営む砂泥を効率良
く吸引浚渫することができる。According to the present invention, highly viscous clayey sand and mud can be efficiently suction dredged.
第１図は従来の浚渫装置のサクションノズルの一部を拡
大して示す因、第２図は本発明を適用する浚渫装置の全
体図、第３図は本発明の浚渫装置のサクションノズルの
側面図、第４図は第３図の人−人線矢視図、第５図は第
４図の５−５線断面図である。
４・・・サンドポンプ、５・・・サクションホース、６
・・・サクションノズル、７・・・送泥管、８・・・圧
力水用補助ボ／ブ、６Ｂ・・・ノズル口、１１・・・補
助ノズル、１１Ａ・・・ノズル管。
第１図
第２図
第 ３ 図
１ノｄ２Fig. 1 is an enlarged view of a part of the suction nozzle of a conventional dredging device, Fig. 2 is an overall view of the dredging device to which the present invention is applied, and Fig. 3 is a side view of the suction nozzle of the dredging device of the present invention. 4 is a view taken along the line 5--5 in FIG. 3, and FIG. 5 is a sectional view taken along the line 5--5 in FIG. 4...Sand pump, 5...Suction hose, 6
. . . Suction nozzle, 7 . Figure 1 Figure 2 Figure 3 Figure 1 d2
Claims (1)
及び送泥管から構成される装置いて、サクションノズル
のノズル口に併設した圧力水噴射用の補助ノズルに、サ
クションノズルの進行方向に対し、前方、側方および下
方に各々複数個の噴口を設け、この噴口から、サクショ
ンノズル周Ｈの砂泥層に向って、複数条の圧力水の噴流
を噴射するようにしたことを特徴とする浚渫装置のサク
ションノズル。sand pump, suction hose, suction nozzle,
and a mud feeding pipe, and an auxiliary nozzle for pressurized water injection attached to the nozzle opening of the suction nozzle is provided with a plurality of nozzles each in front, on the side, and below in the direction of movement of the suction nozzle. A suction nozzle for a dredging device, characterized in that a plurality of jets of pressurized water are injected from this spout toward a layer of sand and mud around the circumference H of the suction nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5133982A JPS58168732A (en) | 1982-03-31 | 1982-03-31 | Suction nozzle for dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5133982A JPS58168732A (en) | 1982-03-31 | 1982-03-31 | Suction nozzle for dredger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58168732A true JPS58168732A (en) | 1983-10-05 |
Family
ID=12884160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5133982A Pending JPS58168732A (en) | 1982-03-31 | 1982-03-31 | Suction nozzle for dredger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58168732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811815A (en) * | 2019-03-20 | 2019-05-28 | 武汉大学 | A kind of pneumatic type jet stream suction desilting system for power station bulkhead gate slot |
-
1982
- 1982-03-31 JP JP5133982A patent/JPS58168732A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109811815A (en) * | 2019-03-20 | 2019-05-28 | 武汉大学 | A kind of pneumatic type jet stream suction desilting system for power station bulkhead gate slot |
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