JPH07197487A - Sludge dredger - Google Patents

Abstract

PURPOSE:To perform high-efficient collection and disposal of sludge without needing a large scale sedimentation disposing device on the ground side. CONSTITUTION:A rotary blade part 16 of a sludge collecting device 15 attached to a work arm 10 of a dredger and sunk on the sea bed is formed in an annular casing having a rotary chamber and comprising a facing wall plate 17, an interior wall plate 18, and rotary plates 22 rotatably arranged on both sides thereof. A partition chamber having a plurality of rotary blades 23 is formed between the right and left rotary plates 22. An opening part is formed below the facing wall plate 17 and located selectively openably by a pair of cover bodies, and accumulated sludge can be dredged through rotation of the rotary blade 23. A shoot is opened on the upper part side of the interior wall plate 18 and sludge is charged in an internal separating part 45. A scraping conveyor 46 is disposed to the internal separating part of the interior wall plate along the shoot, and a hurdle member 50 is located on the carrier side of the scraping conveyor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mud dredger for recovering and processing mud on the seabed.

[0002]

2. Description of the Related Art Conventionally, in this type of mud dredger, a mud accumulated on the seabed is pumped up and sent to the ground through a plurality of dewatering tanks by pipes. It was installed and processed.

[0003]

However, the conventional mud treatment requires a plurality of dewatering tanks in the process of sucking up the mud, and on the ground side, a large-scale sedimentation treatment device is required, resulting in a huge cost. Also, there is a problem that the precipitation treatment takes a long time. The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a mud dredger capable of efficiently collecting and processing mud without requiring a large-scale settling device on the ground side. It is what

[0004]

In order to solve the above technical problems, the present invention relates to a mud dredger for dredging mud deposited on the seabed, which is attached to a working arm of the dredger and settles on the seabed. In the device, a scraping conveyor is provided in a rotary blade portion and a space formed in the center thereof, and the rotary blade portion is provided with an exterior wall plate, an interior wall plate, and a rotary plate rotatably provided on the left and right sides thereof. To form a ring-shaped housing having a rotating chamber, a plurality of rotating blades are provided between the left and right rotating plates to form a compartment, and an opening is formed below the exterior wall plate to form a pair. It is provided so as to be selectively openable and closable by a lid body that forms a dredging of the mud accumulated by the rotation of the rotary blades, and a drip opening is opened on the upper side of the interior wall plate to form the inner side. The mud can be dropped into the separation section, The inner separation of the wall plate disposed the scrape-out conveyor along the chute, the carrier side of the scrape-out conveyor is a mud dredger has a configuration to dispose the gridiron member.

[0005]

With the above structure, the mud can be dredged in the state of being deposited on the seabed, and the scraping conveyor arranged in the separation chamber and the sludge member separates and discharges the dirt to put it on the ground. To the side.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of a dredger 1 and FIG. 2 is a plan view of the same dredger 1, in which the hull 2 of the dredger 1 is A large number of block plates 2a are connected to each other to form a substantially flat plate, and a pair of hanging rods 3 are provided at the rear of the hull 2, and the hanging rods 3 are inserted into the seabed S to turn and advance the hull 2. The discharge pipe 4 is connected to the rear portion of the hull 2, and the discharge pipe 4 is arranged on several other floating bodies 5 floated on the sea surface W to the ground. It is plumbed. In addition, a driver's cab 6 is provided at the front of the hull 2.
And a winch 7 are installed. The winch 7 is provided with a wire 9 of a crane 8 which can be wound and unwound.
This wire 9 is connected to the tip of a working arm 10 attached to the front part of the hull 2 via a hinge 11 and having a predetermined length. The working arm 10 is centered on the hinge 11 via the wire 9. It is provided so that it can move up and down on the seabed S and the sea surface W. The mud collecting device 15 is attached to the tip of the working arm 10 thus provided.

The mud collecting device 15 is for cutting and dredging the soft mud D accumulated on the seabed S. The mud collecting device 15 is formed in a horizontal cylindrical shape as shown in FIG.
The rotary vane portion 16 and a separation chamber 45 located in the center of the rotary blade portion 16 for separating the mud D and the dust are formed, and a dust collection chamber 54 and a mud discharge chamber 55 are formed on the left and right sides thereof.

As shown in FIGS. 3 and 4, the rotary blade portion 16 has a cylindrical exterior wall plate 17 having a predetermined diameter,
A cylindrical inner wall plate 18 having a predetermined diameter is formed between the outer wall plate 17 and the outer wall plate 17 to form a rotation chamber 19 in which the rotary vanes 23 are rotatably housed. Is attached with a rail member 20 having a substantially U-shaped cross section at a predetermined interval, and a rail member 21 having the same shape as the rail member 20 attached to the exterior wall plate 17 is attached to the outer periphery of the interior wall plate 18 so as to face the rail member 20. The opposing rail members 20, 21
A ring-shaped rotary plate 2 that can shield the rotary chamber 19 between
2 is rotatably mounted. The rotary vane portion 16 thus formed is formed in a ring-shaped casing having a hollow rotary chamber 19, and a central portion P of the rotary vane portion 16 is provided between the left and right rotary plates 22 as shown in the figure. A plurality of rotary vanes 23 are attached radially at an equal angle with respect to. An internal gear 24 is attached to the outer surface of each of the left and right rotary plates 22, and partition walls 25a, 2 are attached to the internal gear 24.
A forward / reverse drive source attached to 5b, for example, a pinion 27 attached to the rotary shaft of the hydraulic motor 26 is provided so as to mesh with each other and rotate in synchronization. A cutting tooth is formed at the tip of the rotary blade 23. Further, a sealing process is performed between the rotary plate 22 and the rail members 20, 20 so that water in the rotary chamber 19 does not flow out.

Further, as shown in FIG. 4, the interior wall plate 18 is provided with an outlet 28 for the mud D which is opened upward from the central portion P by a predetermined angle α. Also, the exterior wall board 1
In FIG. 7, an opening 30 is formed below the central portion P over a predetermined angle θ range. In the opening 30, as shown in FIG. It is attached so that it can be opened and closed via. In addition, this lid 31,
Since the 32 and the switchgear 35 are formed symmetrically,
The right side of the drawing will be described. The lid plate 33 of the lid body 31 is formed to have the same curvature as the exterior wall plate 17 so that half of the opening 30 can be opened and closed, and mounting edges 34 are formed on the left and right outside the lid plate 33. ing. An opening / closing device 35 is connected to the left and right of the lid 31 provided in this way.

The opening / closing device 35 comprises links 36, 37, a connecting link 38, and an operating cylinder 39. The links 36, 37 are formed to have the same length, and one end thereof is located at a predetermined position of the partition walls 25a, 25b. 36a, 37a, and the other end of the link 36 is attached to the mounting edge portion 34.
36b is pivotally attached to a predetermined position on the tip side thereof, and the other end of the link 37 is pivotally attached to a predetermined position on the base side of the attachment edge portion 37b. Also, both links 36 and 3
A connecting link 38 is provided between the substantially central portions of 7 to connect pivots 38a,
38b are connected. Link 3 linked in this way
A tip end of a rod 40 of an operating cylinder 39 is pivotally connected to a pivotally connecting portion 38b between the connection link 7 and the connection link 38. The base side of the operating cylinder 39 is pivotally attached 39a to a support member 41 formed on the upper side of the exterior wall plate 17. The left and right actuating cylinders 39 are provided so as to operate synchronously. In this way, the lid 3 connected to the opening / closing device 35
1 is opened when the actuating cylinder 39 is extended and the right half of the opening 30 in the drawing is closed, and when the actuating cylinder 39 is shortened. When the lids 31 and 32 are closed, the tip ends are on a line passing through the central portion P. The space in the interior wall 18 of the rotary vane portion 16 thus provided serves as a separation chamber 45.

In the separation chamber 45, a scraping conveyor 46 is disposed below the drop opening 28 formed in the interior wall plate 18 (in the direction of the center line P), and the scraping conveyor 46 has a width of the drop opening 28. Chain wheels 4 formed with a larger width before and after that
Chains 48a and 48b are hooked on 7a and 47b,
As shown in FIGS. 3 and 6, a large number of scraping plates 48 are attached between the chains 48a and 48b at predetermined intervals. On the carrier 46A side of the scraping conveyor 46, a guide member 49 for the chains 48a and 48b. Is provided,
A sludge member 50 is disposed at a predetermined position below the carrier 46A.

The sludge member 50 is the carrier 46A.
It is arranged along the side and is formed to have a width larger than the width of the scraping conveyor 46 as shown in FIGS. 6 and 7, and a large number of aluminum pieces having a predetermined diameter, for example, are provided between the plurality of horizontal rails 50a. The vertical bars 50b made of alloy pipe material are attached at intervals so that the mud D can pass therethrough and dusts mixed in the mud D can be prevented from passing therethrough. The both ends of the sludge member 50 formed in this manner are the spring member 5 of the vibration device 51.
The mud D, which is supported between the two and is fed from the dropping port 28, is slid down on the sludge member 50 only by the vibrating device 51, and the mud D is slid on the sludge member 50.
Garbage that had been mixed in remains, and the rubbish is scraped off board 4
It is scraped to the garbage collection chamber 54 by 8. Further, below the scraping Koyabeya 46 of the separation chamber 45, a mud discharge chamber 55 is provided.
A shooter 53 is formed to incline (see FIG. 3). Incidentally, reference numerals 80 and 80 in FIG. 3 are surveillance cameras.

As shown in FIG. 3, a collecting portion 56 for collecting the mud D is provided in the mud discharging chamber 55, and a screw conveyor 58 which is continuously driven by a hydraulic motor 57 with the shooter 53 is provided above the collecting portion 56. Is provided horizontally so that the mud D can be scraped to the right side in the drawing. In the stacking unit 56 thus provided, the valve chamber 60A of the cylinder device 60 arranged in the lower space of the shooter 53,
60B is facing.

This cylinder device 60 is a kind of concrete piston, and as shown in FIG.
The 1st and 2nd cylinder 62 is installed in parallel, and each cylinder 61,6
2 is a hydraulic cylinder 63a, 63b and a mud cylinder 64
a and 64b are integrally provided in series, and the hydraulic pistons 65a and 65b are muddy pistons 66a and 66, respectively.
It is connected to b by connecting rods 67a and 67b, and both cylinders 61 and 62 are provided so as to operate alternately. Further, the mud cylinders 64a and 64b are provided in the valve chamber 6
0A, 60B, and valve seats 68A, 68b are provided in the valve chambers 60A, 60B in an opening shape, and a valve element 69a, 69b is provided between the valve seats 68a, 68b in a substantially V-shape for rotation. The valve 69 is pivotally mounted via a shaft pin 70, and the valve elements 69a and 69b alternately serve as valve seat pipes 68a and 68b.
It is provided to open and close. Also, this valve chamber 60
Discharge holes 71a, 71b for the mud D are formed at the bottom of A, 60B. The discharge holes 71a, 71b are provided so as to be alternately opened and closed by appropriate means.
A discharge pipe 72 having a substantially Y shape is connected to 1b, a discharge pipe 73 to the hull 2 side is connected to the discharge pipe 72, and the discharge pipe 73 is connected to the discharge pipe 4.

In the cylinder device 60 provided in this way, for example, as shown in FIG. 8, in a state where both pistons 65a and 66a of the first cylinder 61 are retracted, the valve seat pipe 68a is opened and the mud D Are sucked into the mud cylinder 64a. On the other hand, the second cylinder 62 side is advanced, the valve seat pipe 68b is closed, the discharge hole 71b is opened, and the mud D in the mud cylinder 64b is discharged from the discharge hole 71b. This is alternately performed and the mud D is discharged through the discharge pipe 72.

The mud collecting device 15 thus formed is attached to the tip of the working arm 10 via the supporting member 41.
In order to dredge the mud D accumulated on the seabed S by the mud collector 15, first, the lid 31, depending on the traveling direction of the hull,
32 apertures are selected. That is, as shown in FIG. 5, when advancing to the left arrow in the drawing, the left valve body 32 is shortened by the actuation cylinder 39 of the opening / closing device 35, so that the left half of the opening 30 of the exterior wall plate 17 is moved. Is opened. In this state, the crane 8 is operated to set the work arm 10 on the seabed S centering on the hinge 11. When the hydraulic motor 26 of the rotary vane portion 16 is operated in this state, the rotary vane 23 is rotated counterclockwise through the rotary plate 22.
This rotation is rotated at the same peripheral speed as the dredging speed, and by this rotation, the soft mud D is sequentially cut off by the rotary blades 23. The cut mud D is accommodated in the compartment 16a between the rotary blades 23 and drawn into the rotary chamber 19 to rotate. The cutting by the rotary blades 23 is made by inserting the accumulated soft mud D from the cutting edge side so as to cut it and cutting it into the partition chamber 16a in a manner that it is stored in the partition chamber 16a. Since the mud D is reduced, the mud D is dredging in a substantially deposited state, so that the mud D having a low water content and a high mud content can be dredged, and the occurrence of pollution can be significantly reduced.

When the compartment 16a accommodating the mud D reaches the outlet 28 opened in the interior wall plate 18, the outlet 2 is also removed.
It is thrown into the scraping conveyor 46 side below 8. The mud D introduced into the scraping conveyor 46 side is vibrated by the sludge member 50 disposed on the carrier side, whereby the mud D is dropped to the lower shooter 53 side and mixed into the mud D. The garbage is separated on the drainboard member 50, and the garbage is collected by the scraping conveyor 46.
It is discharged to the 4 side.

Further, only the mud D is dropped to the shooter 53 side, the mud D is accumulated in the accumulating portion 56 of the mud discharge chamber 55, and the mud D is discharged by the cylinder device 60 to the discharge pipe 73.
It is sent out to the hull 2 side through the above, and is further transferred to the land side by the discharge pipe 4 arranged on the sea surface W.

As described above, according to the mud collecting device 15 of the present embodiment, the cutting by the rotary blades 23 is inserted into the accumulated soft mud D from the cutting edge side so that the soft mud D is cut into almost the entire compartment 16a. Since it is cut out, the suction of excess water is drastically reduced, and the mud D is dredging in almost the accumulated state, so it is possible to dredge the mud D with a low water content and a high mud content, and to generate pollution. Can be significantly reduced. Further, when the compartment 16a containing the mud D reaches the outlet 28 opened in the interior wall plate 18, it is thrown into the scraping conveyor 46 side below the outlet 28. The mud D introduced into the scraping conveyor 46 side is vibrated by the sludge member 50 disposed on the carrier side, whereby the mud D is dropped to the lower shooter 53 side and mixed into the mud D. The wastes are separated on the drainboard member 50, and the wastes are discharged by the scraping conveyor 46 to the waste collection chamber 54 side. Therefore, only the mud D is dropped to the shooter 53 side, the mud D is accumulated in the accumulating portion 56 of the mud discharge chamber 55, and the cylinder device 60 can easily suck and pump. Further, since the water content is small, there is no need for a large-scale precipitation treatment device as in the conventional case, and the treatment becomes easy.

[0020]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the cutting by the rotary blade is inserted into the accumulated soft mud from the blade edge side to make a cut, and the cut is made almost in the entire compartment. Since it is cut into pieces, the suction of excess water is drastically reduced, and the mud is dredged in almost the accumulated state, so it is possible to dredge mud with low water content and high mud content, and also significantly reduce the occurrence of pollution. be able to. Further, when the compartment containing the mud reaches the outlet opening on the interior wall plate, it is thrown into the scraping conveyor side below the outlet. The mud thrown into the scraping conveyor side is vibrated by the sludge member disposed on the carrier side, so that the mud drops to the lower shooter side, and the dust and dirt mixed in the mud sludge member on the sludge member. The waste is separated by the scraping conveyor and discharged to the waste collection chamber side. Therefore, only the mud is dropped to the shooter side, the mud is accumulated in the accumulating portion of the mud discharge chamber, and the cylinder device can easily suck and pump. In addition, since there is little water, there is no need for a large-scale precipitation treatment device as in the past,
Processing becomes easy.

[Brief description of drawings]

FIG. 1 is a side view of a dredger.

FIG. 2 is a plan view of the same dredger.

FIG. 3 is a cross-sectional view of a mud collector.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a partially cutaway side view of the mud collector.

FIG. 6 is a cross-sectional view of the scraping conveyor on the carrier side.

FIG. 7 is a plan view of a drainboard member.

FIG. 8 is a plan view of a cylinder device.

[Explanation of symbols]

 1 Dredger 10 Working Arm 15 Mud Collector 16 Rotating Blade 16a Partition Chamber 17 Exterior Wall Plate 18 Interior Wall Plate 19 Rotating Chamber 22 Rotating Plate 23 Rotating Blade 28 Dropout 30 Opening 31, 32 Lid 45 Separation Chamber 46 Rubbing Conveyor 50 Drainboard member 60 Cylinder device

Claims (1)

[Claims] 1. In a mud dredger for dredging mud deposited on the seabed, a rotary vane part 16 is attached to a mud collecting device 15 attached to a working arm 10 of the dredger and settled to the seabed.
And a scraping conveyor 46 in the space formed in the center thereof.
And the rotary vane portion 16 is provided with the exterior wall plate 1
7 and the interior wall plate 18 and a rotary plate 22 rotatably provided on the left and right sides thereof to form a ring-shaped casing having a rotary chamber, and a plurality of rotary blades 23 are provided between the left and right rotary plates 22.
Is provided to form a compartment, and an opening 30 is formed below the exterior wall plate 17 so as to be selectively opened and closed by a pair of lids 31 and 32. It is provided so that the accumulated mud can be dredged, and an outlet 28 is opened at the upper side of the interior wall plate 18 so that the mud can be dropped into the inward separating portion 45.
The mud dredger having a structure in which the scraping conveyor 46 is disposed along the drop opening 28 in the inward separating portion 45, and the drain member 50 is disposed on the carrier side of the scraping conveyor 46.