JPH03180627A - Dredging device - Google Patents

Abstract

PURPOSE:To reduce operating costs by constituting a dreging device by a vertical screw conveyor, a pair of right and left gathering paddles, a pair of upper and lower stirring paddles, and shutters provided between the gathering paddles and the stirring paddles, and reducing spil water. CONSTITUTION:A dredging device is composed of a vertical screw conveyor 1 provided with a screw 3 in the cylinder body 2, a pair of two gathering paddles 10, two sets of a pair of upper and lower stirring paddles 20, and shutters 6 arranged between the paddles 10 and 20. A dredger is operated by a driving device to insert the paddles 10, 20 into sludges, rotate the screw 3, lower the shutter on one side, and rotate the paddles 10 and the paddles 20 on the upstream side. The dredger is advanced upstream at low speed to send the sludges in the direction of the paddles 10 by the paddles 20, and discharge the sludges by rotation of the screw 3 through the inside of the cylinder 2 from a discharge port to a specified place. Sludge disposal cost can thus be reduced.

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、例えば、発電所の取水口や海底、湖沼、河川
１港湾などに堆積したヘドロなどの軟泥を浚渫する際に
利用される浚渫装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to dredging, which is used, for example, to dredge soft mud such as sludge accumulated in water intakes of power plants, seabeds, lakes, rivers, ports, etc. It is related to the device.

［従来の技術］ 従来の浚渫装置と１．てポンプ式のものがある。[Conventional technology] Conventional dredging equipment and 1. There are pump type ones.

このポンプ式浚渫装置は、台船などに大容量のポンプを
設置し、該ポンプから海底や湖底などの水底にホースを
延ばし、軟泥を水と共に吸い上げるようにしている。そ
して、このようにして浚渫された軟泥は、主として運搬
船にて埋立地に運ばれる。埋立地では、固化剤や凝集剤
が添加されて固化される。This pump-type dredging device installs a large-capacity pump on a barge or the like, and extends a hose from the pump to the bottom of the ocean, such as the bottom of a lake, and sucks up the soft mud along with the water. The soft mud dredged in this way is mainly transported to a landfill by a carrier ship. At the landfill, solidifying agents and flocculants are added to solidify the waste.

［発明が解決しようとする課８］ しかしながら、上述した従来の浚渫装置においては、軟
泥と同時に吸い上げられる水の量があまりにも多く余水
の処理後でないと固化剤を混合することができず、余水
処理に多大な費用を要するという欠点があった。また、
海底の軟泥層の層Ｉゾが大きい場合には、海底部分の取
り込みはできてもそれより上の部分の取り込みを充分果
たすことができなかった。[Problem 8 to be solved by the invention] However, in the conventional dredging equipment described above, the amount of water that is sucked up at the same time as the soft mud is so large that the solidifying agent cannot be mixed until after the surplus water is treated. There was a drawback that a large amount of cost was required to treat the surplus water. Also,
When the layer I of the soft mud layer on the ocean floor is large, even if it is possible to capture the ocean floor part, it is not possible to sufficiently capture the part above it.

［課題を解決するための手段］ 上述の課題を解決するため、本発明における浚渫装置は
、竪型スクリュコンベヤと、該竪型スクリュコンベヤの
先端部両側に配設され、水平回転軸を有し軸方向所定間
隔離間した状態で該竪型スクリュコンベヤ方向へ搬送物
を移送する複数枚の傾斜羽根を取り付けた左右一対の中
寄せパドルと、該中寄せパドルの円外側に配設され、該
中寄せパドル回転軸と平行な水平回転軸に傾斜羽根を取
り付けた」二下一対の攪拌パドルと、前記中寄せパドル
と該攪拌パドルとの間に上下方向開閉自在なシャッタお
よび該シャッタの開閉手段とを備えた浚渫装置であって
、前記上下一対の攪拌パドルの各々の羽根は軸方向から
見て重複するように配設した構成とした。[Means for Solving the Problems] In order to solve the above-mentioned problems, the dredging device of the present invention includes a vertical screw conveyor, and a horizontal rotation shaft disposed on both sides of the tip of the vertical screw conveyor. A pair of left and right centering paddles each having a plurality of inclined blades for transporting the conveyed material in the direction of the vertical screw conveyor while separated by a predetermined distance in the axial direction; A pair of stirring paddles having inclined blades attached to a horizontal rotating shaft parallel to the centering paddle rotation axis, a shutter that can be opened and closed in the vertical direction between the center shifting paddle and the stirring paddle, and a means for opening and closing the shutter. In the dredging device, each blade of the pair of upper and lower stirring paddles is arranged so as to overlap when viewed from the axial direction.

［作用］ 本発明の浚渫装置においては、まず、竪型スクリュコン
ベヤの先端部両側にある攪拌パドルのうち、竪型スクリ
ュコンベヤの進行方向の上下一対の攪拌パドルを回転駆
動し、進行方向の下流側の攪拌パドルのシャッタを閉状
態に保つ、そして、浚渫装置を搭載した浚渫船を低速で
前進すると、上流側の攪拌パドルは海底、湖底、湖底に
堆積したヘドロ等の軟泥を攪拌流動化し、軟化した軟泥
は中寄せパドルへ移動し、中寄せパドルによって竪型ス
クリュコンベヤまで運搬され、竪型スクリュコンベヤの
羽根の回転により竪型スクリュコンベヤ内を上昇し、上
端の排出口より排出される。[Function] In the dredging device of the present invention, first, among the stirring paddles on both sides of the tip of the vertical screw conveyor, a pair of upper and lower stirring paddles in the direction of movement of the vertical screw conveyor is driven to rotate, When the shutter of the stirring paddle on the side is kept closed and the dredger equipped with dredging equipment moves forward at low speed, the stirring paddle on the upstream side stirs and fluidizes the soft mud such as sludge accumulated on the seabed, lake bed, and lake bottom. The soft sludge is moved to the intermediate paddle, transported to the vertical screw conveyor by the intermediate paddle, ascends within the vertical screw conveyor by the rotation of the blades of the vertical screw conveyor, and is discharged from the discharge port at the upper end.

軟泥中に合孔する岩石、木片、鉄片等の異物は、重なり
合って回転する攪拌パドルの羽根の排除作用により並列
した複数個の攪拌パドルに沿って外側を移動し、竪型ス
クリュコンベヤ内への侵入を抑止される。浚渫船が逆方
向に移動するときには両側のシャッタの開閉状態を逆に
して前述と同様な操業を繰り返す。Foreign objects such as rocks, pieces of wood, and pieces of iron that form holes in the soft mud are moved outside along multiple stirring paddles arranged in parallel by the removal action of the blades of the stirring paddles that rotate overlapping each other, and are transported into the vertical screw conveyor. Intrusion is deterred. When the dredger moves in the opposite direction, the same operation as described above is repeated with the shutters on both sides reversed.

［実施例］ 以下１図に示す実施例に基づいて本発明の詳細な説明す
る。[Example] The present invention will be described in detail below based on an example shown in FIG.

第１図〜第４図は本発明に係り、第１図は本発明に係る
浚渫装置の１実施例を示す要部縦断面図、第２図は第１
図ＩＩ　−ＩＩ視の平面断面図、第３図は第２図ｍ−ｍ
視の側面図、第４図は第２図ＩＶ−ＩＶ視の側面図であ
る。1 to 4 relate to the present invention, FIG. 1 is a vertical cross-sectional view of essential parts showing one embodiment of the dredging device according to the present invention, and FIG.
Figure II-II plane sectional view, Figure 3 is Figure 2 m-m
FIG. 4 is a side view taken along line IV-IV in FIG. 2.

竪型スクリュコンベヤｌは、円筒状の筒体２と。The vertical screw conveyor l has a cylindrical body 2.

この筒体２内に回転可能に収納配置されたスクリュ３を
備えた構成となっており、該スクリュ３によってヘドロ
などの軟泥を揚泥し得るようになっている。該スクリュ
３は、筒体２の上端側に配置されたモータ（図示せず）
に接続されており。The structure includes a screw 3 that is rotatably housed within the cylinder 2, and the screw 3 can lift up soft mud such as sludge. The screw 3 is connected to a motor (not shown) disposed on the upper end side of the cylinder body 2.
is connected to.

該モータによって回転駆動されるよう構成されている。It is configured to be rotationally driven by the motor.

また、筒体２は、その先端に軟泥を取り込むためのケー
シング７が設けられており、第１図に示すように、縦力
向略７Ｔ字形に形成され、円周方向１８０’隔てて両側
に２個所の開口部を有している。Further, the cylindrical body 2 is provided with a casing 7 at its tip for taking in soft mud, and as shown in FIG. It has two openings.

竪型スクリュコンベヤｌの先端の両側には、スクリュ３
および回転軸３ａを抱くようにして水平回転軸回りに回
転し、軸方向に所定７１ＪＩ隔離間した状態で複数枚の
傾斜羽根１０ａを取り付けた２本一対の中寄せパドルｌ
Ｏが、傾斜羽根１０ａが軸方向からみて重複し、かつ、
相互に干渉接触しないように配設されている。そして、
この中寄せパドルｌＯの傾斜羽根１０ａは、第２図に示
すように、中心の竪型スクリュコンベヤｌを境として羽
根の傾きの方向が逆となっており、各々図に示す矢印方
向へ搬送物を移送するようになっている。すなわち、一
方の中寄せパドルを油圧モータ１０ｂで駆動することに
よって、他方の中寄せパドルを歯車駆動し９、一対の中
寄せパドルが回転方向が逆方向で、かつ、同期して回転
駆動される。There are screws 3 on both sides of the tip of the vertical screw conveyor l.
and a pair of centering paddles l which are rotated around the horizontal axis of rotation so as to embrace the axis of rotation 3a and have a plurality of inclined blades 10a attached with a predetermined distance of 71 JI in the axial direction.
O is such that the inclined blades 10a overlap when viewed from the axial direction, and
They are arranged so that they do not interfere with each other. and,
As shown in FIG. 2, the inclined blades 10a of this centering paddle lO have opposite directions of inclination with respect to the central vertical screw conveyor l as a boundary, and the conveyed objects move in the direction of the arrow shown in the figure. It is designed to transport. That is, by driving one centering paddle with the hydraulic motor 10b, the other centering paddle is driven by a gear 9, and the pair of centering paddles are rotated in opposite directions and synchronously. .

さらに、中寄せパドル１０の外側には、中寄せパドル１
０の回転軸と平行な水平回転軸に傾斜羽根２０ａを複数
枚取り付けた上下一対の攪拌パドル２０が左右１組ずつ
配設される。Furthermore, an intermediate paddle 1 is provided on the outside of the intermediate paddle 10.
A pair of upper and lower stirring paddles 20 each having a plurality of inclined blades 20a attached to a horizontal axis of rotation parallel to the axis of rotation of 0 is disposed on each side.

この」−Ｔｍ対の攪拌パドル２０は、第４図に示すよう
に、各々の攪拌パドル２０の傾斜羽根２０ａが軸方向か
ら見て重複しており、かつ、相瓦に干渉しない（接触し
ない）ように配設される。As shown in FIG. 4, in this "-Tm pair of stirring paddles 20, the inclined blades 20a of each stirring paddle 20 overlap when viewed from the axial direction, and do not interfere with (do not contact) the mating tiles. It is arranged like this.

そして、両者の回転は逆方向で、かつ、同期して回転す
るよう歯車で連結され、一方の攪拌パドルを油圧モータ
２０ｂで駆動するようになっている。The two stirring paddles are connected by gears so that they rotate in opposite directions and in synchronization, and one stirring paddle is driven by a hydraulic motor 20b.

また、第１図、第２図に示すように、中寄せパドル１０
と攪拌パドル２０との間に、上下方向に往復動可能で筒
体２に固設された油圧シリンダ６ａで駆動されるパネル
形状のシャッタ６が配設され、中寄せパドル１０と攪拌
パドル２０との間を連通遮断できる構造となっている。In addition, as shown in FIGS. 1 and 2, the middle paddle 10
A panel-shaped shutter 6 is disposed between the centering paddle 10 and the stirring paddle 20, and is movable vertically and driven by a hydraulic cylinder 6a fixed to the cylinder body 2. It has a structure that allows communication between the two to be cut off.

中寄せパドル１０の傾斜羽根１０ａおよび攪拌パドル２
０の傾斜羽根２０ａは、第２図〜第４図に示すようにパ
ネル（平板）状のものを使用するほか、湾曲した形状や
スクリュー状のものも採用しうる。Inclined blade 10a of centering paddle 10 and stirring paddle 2
The inclined blade 20a of 0 may be panel (flat plate) shaped as shown in FIGS. 2 to 4, or may be curved or screw shaped.

次に、以上のように構成された浚渫装置の作動について
説明する。Next, the operation of the dredging device configured as above will be explained.

浚渫船（図示せず）の駆動装置を作動させて竪型スクリ
ュコンベヤｌの先端に位置する中寄せパドル１０．ＪＷ
拌パドル２０を水底の軟泥中に差し込み、スクリュ３の
駆動装置（図示せず）を回転させると同時に１片側のシ
ャッタ６を油圧シリンダ６ａの作動により降下させて、
中寄せパドル１０の抽圧モータ１０ｂと上流側の攪拌パ
ドル２０の油圧モータ２０ｂを駆動し、中寄せパドル１
０および上流側の攪拌パドルを回転駆動する。The driving device of the dredger (not shown) is operated to move the intermediate paddle 10 located at the tip of the vertical screw conveyor l. JW
Insert the stirring paddle 20 into the soft mud at the bottom of the water, rotate the drive device (not shown) for the screw 3, and at the same time lower the shutter 6 on one side by operating the hydraulic cylinder 6a.
The extraction motor 10b of the intermediate paddle 10 and the hydraulic motor 20b of the upstream stirring paddle 20 are driven, and the intermediate paddle 1
0 and upstream stirring paddles are rotated.

下流側の攪拌パドル２０は回転を休止しておく。The stirring paddle 20 on the downstream side stops rotating.

そして、浚渫船が静かに低速度で上流側に前進すると、
上流側の攪拌パドル２０の回転により取込部周辺の軟泥
は攪拌され流動化されながら中寄せパドル１０方向へ移
送される。中寄せパドルｌＯへ到達した軟泥は各々中寄
せパドルの軸方向に沿って中心の竪型スクリュコンベヤ
ｌへ移動し、竪型スクリュコンベヤ１のスクリュ３の回
転作用により筒体２へ入る。なお、軟泥中の大きな異物
は上下一対の攪拌パドルの相互に重なり合う傾斜羽根２
０ａに妨害されて流入を阻止される。Then, as the dredger quietly moves upstream at low speed,
As the stirring paddle 20 on the upstream side rotates, the soft mud around the intake portion is stirred and fluidized while being transferred toward the intermediate paddle 10. The soft mud that has reached the intermediate paddles lO moves along the axial direction of each intermediate paddle to the central vertical screw conveyor l, and enters the cylinder 2 by the rotation action of the screw 3 of the vertical screw conveyor 1. In addition, large foreign objects in the soft mud are removed by the mutually overlapping inclined blades 2 of the upper and lower pair of stirring paddles.
The inflow is blocked by 0a.

本実施例においては、攪拌パドル２０の傾斜羽根２０ｂ
の傾斜力向は第４図に示すように、竪型スクリュコンベ
ヤ１の中心軸を境として逆方向に取り付けられ、軟泥物
に中心へ向かうような推力を付与しているが、比較的大
きな異物が混在する軟泥を処理する場合にあっては、攪
拌パドルの傾斜羽根２０ａの傾斜方向をすべて同一方向
とし。In this embodiment, the inclined blade 20b of the stirring paddle 20
As shown in Fig. 4, the direction of the tilting force is opposite to the center axis of the vertical screw conveyor 1, and it applies a thrust toward the center of the soft mud. When processing soft mud containing a mixture of sludge, the tilting direction of the tilted blades 20a of the stirring paddle should all be in the same direction.

大きな異物を片側に排除させるようにしてもよい。Large foreign objects may be removed to one side.

一方、中寄せパドル１０から筒体２内に導入された軟泥
は、スクリュ３の回転により筒体２内を４−昇し、排出
口（図示せず）から所定の場所へ排出される０例えば、
竪型スクリュコンベヤ１から排出された軟泥は、固化剤
が添加、混合された後、弛搬船や圧送ホースなどを介し
て埋立地に投棄される。On the other hand, the soft mud introduced into the cylindrical body 2 from the middle paddle 10 moves up within the cylindrical body 2 by the rotation of the screw 3, and is discharged from a discharge port (not shown) to a predetermined location, e.g. ,
The soft mud discharged from the vertical screw conveyor 1 is mixed with a solidifying agent, and then is dumped into a landfill via a loosening boat, a pressure hose, or the like.

なお、スクリュ３の径が大きい場合は、多少の異物混入
は許容できるので攪拌パドルおよび中寄せパドルの各傾
斜羽根のピッチを比較的大きくしてもよい。Note that when the diameter of the screw 3 is large, the pitch of each inclined blade of the stirring paddle and the centering paddle may be made relatively large, since some amount of foreign matter can be tolerated.

［発明の効果］ 以ＪＺのとおり、本発明によれば、軟泥居の層厚が大き
くてもほとんどの軟泥を攪拌パドル２０へ向かわせるこ
とができるので、取込効率が優れている。それと同時に
、余水が減少された状態で軟泥がスクリュコンベヤ内に
導入されるので、軟泥処理コストの大幅な低減が可能と
なる。また、スクリュコンベヤの先端両側に、攪拌パド
ルとシャッタを設けて、進行方向り流側のみの攪拌パド
ルを操作させることができ、かつ、隣り合う攪拌パドル
の羽根は軸方向から見て重複しているので異物の排除機
能が優れており、中寄せパドルの作用により軟泥を中心
へかき寄せられるので、竪型スクリュコンベヤ内への軟
泥の移動が円滑に進行し、スクリュコンベヤの円滑な作
動を長期連続的に確保できる。[Effects of the Invention] As described below, according to the present invention, even if the layer thickness of the ooze layer is large, most of the ooze can be directed to the stirring paddle 20, so the intake efficiency is excellent. At the same time, since the soft mud is introduced into the screw conveyor with less surplus water, it is possible to significantly reduce the cost of soft mud processing. In addition, by providing stirring paddles and shutters on both sides of the tip of the screw conveyor, it is possible to operate only the stirring paddles on the downstream side in the direction of travel, and the blades of adjacent stirring paddles overlap when viewed from the axial direction. The sludge has an excellent ability to remove foreign matter, and the action of the centering paddles sweeps the sludge toward the center, allowing smooth movement of the sludge into the vertical screw conveyor, ensuring smooth operation of the screw conveyor over a long period of time. can be ensured.

【図面の簡単な説明】[Brief explanation of drawings]

第１図〜第４図は本発明に係り、第１図は本発明に係る
浚渫装置の１実施例を示す要部縦断面図、ｔ５２図は第
１図ＩＩ　−ＩＩ視の千面断簡図、第３図は第２図ｍ−
■視の側面図、第４図は第２図ＩＶ−ＩＶ視の側面図で
ある。 ｌ・・・・・・竪型スクリュコンベヤ、２・・・・・・
筒体、　　　　　　３・・・・・・スクリュ、６・・・
・・・シャッタ、 ６ｂ・・・ガイド、 ｌＯ・・・・・・中寄せパドル、 ２０・・・・・・攪拌パドル、 ６ａ・・・油圧シリンダ、 ７・・・・・・ケーシング、 １０ａ・・・傾斜羽根。 ２０ａ・・・傾斜羽根。Figures 1 to 4 relate to the present invention, Figure 1 is a vertical cross-sectional view of essential parts showing one embodiment of the dredging device according to the present invention, and Figure t52 is a simplified cross-sectional view taken from Figure 1 II-II. , Figure 3 is Figure 2 m-
Fig. 4 is a side view taken from IV-IV in Fig. 2; l... Vertical screw conveyor, 2...
Cylindrical body, 3... Screw, 6...
...Shutter, 6b...Guide, lO...Inner paddle, 20...Stirring paddle, 6a...Hydraulic cylinder, 7...Casing, 10a.・Slanted blade. 20a... Slanted blade.

Claims (1)

【特許請求の範囲】[Claims] （１）竪型スクリュコンベヤと、 該竪型スクリュコンベヤの先端部両側に配設され、水平
回転軸を有し軸方向所定間隔離間した状態で該竪型スク
リュコンベヤ方向へ搬送物を移送する複数枚の傾斜羽根
を取り付けた左右一対の中寄せパドルと、 該中寄せパドルの両外側に配設され、該中寄せパドル回
転軸と平行な水平回転軸に傾斜羽根を取り付けた上下一
対の攪拌パドルと、 前記中寄せパドルと該攪拌パドルとの間に上下方向開閉
自在なシャッタおよび該シャッタの開閉手段とを備えた
浚渫装置であって、 前記上下一対の攪拌パドルの各々の羽根は軸方向から見
て重複するように配設した浚渫装置。(1) A vertical screw conveyor, and a plurality of conveyors disposed on both sides of the tip of the vertical screw conveyor, each having a horizontal rotating shaft and transporting objects in the direction of the vertical screw conveyor while being separated by a predetermined distance in the axial direction. A pair of left and right centering paddles each having two inclined blades attached thereto, and a pair of upper and lower stirring paddles each having an inclined blade attached to a horizontal rotation axis parallel to the centering paddle rotation axis, which are arranged on both outside sides of the centering paddle. and a dredging device comprising a shutter that can be opened and closed in the vertical direction between the centering paddle and the stirring paddle, and a means for opening and closing the shutter, wherein the blades of each of the pair of upper and lower stirring paddles are rotated from the axial direction. Dredging equipment arranged so that they overlap.