JPS6026733A - Sludge dredger equipment - Google Patents

Abstract

PURPOSE:To obtain transporters having excellent land trasportability by using a system in which an excavator for dredging the bottom under water, a sludge sorting and grinding unit for excavated sludge and a sludge sending tank unit are orderly provided on a base ship. CONSTITUTION:An excavator 4 for dredging the bottom under water is provided on a base ship 1 commected with plural blocks 2. A sludge sorting and grinding unit, consisting of a sludge sorter 5 for dredged sludge, a sludge grinder 6 for the sludge, and belt conveyers 9 and 10 to deliver the discharged sludge, is provided. In a sludge sending tank unit 8, pneumatic sending type tanks are set in parallel below a charging hopper 29 and sludge is alternately charged to the tanks. The transportability of each apparatus is excellent, and great amounts of dredged sludge can thus be sent under pressures to the ground surface, etc., smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to sludge dredging equipment, and more specifically, the present invention relates to sludge dredging equipment, and more specifically, various devices for sorting and crushing dredged mud into a ready-mixed concrete-like fluid and pumping it to land etc. are mounted on a block-connected barge. This relates to sludge dredging equipment installed at

In recent years, the amount of mud deposited on the bottoms of ports, canals, urban rivers, reservoirs, etc. is extremely large, and if left untreated, it can cause pollution such as bad odors and cause disasters such as floods. Therefore, it is requested that these muddy soils be dredged as soon as possible.

Therefore, in order to speed up the dredging work, the current situation is to increase the size of excavators for dredging mud and also to increase the size of purges for transporting mud (hereinafter simply referred to as purges).

However, the working water surface that can be dredged using such large purges is limited to ports, canals, etc. where purges etc. can be towed directly from their moorings, and inland reservoirs etc. Naturally, purges cannot be towed away from the reservation area, so the larger the trap, the more inconvenient it becomes.In addition, when using the dredging method to transport mud to the purge site, care must be taken to ensure that the dredging work is not interrupted. Therefore, many purges were required, and muddy soil had to be unloaded.

In view of this point of view, the present inventor has individually transported an excavator for dredging and a pressure-feeding mud transporting device capable of transporting dredged mud to land without purging. As a result of various studies regarding installation on a large prefabricated barge, we have come up with the present invention, which can transport a large amount of dredged mud to land through a mud pipe floating between the barge and land. It is something. Specifically, the dredged mud contains lumps and has a certain degree of viscosity (hereinafter collectively referred to as piled mud), so if it is sent as it is into the mud pipe, it will cause 7. To prevent clogging, lumps in the accumulated mud are first removed using a sorter, and then the sorted accumulated mud is crushed using a crusher to form a liquid like ready-mixed concrete (hereinafter referred to as a generic term). The fluidized mud is then sent to a pressure tank unit, and compressed air is used to forcefully transport the fluid mud from the pressure tank unit to land, etc. via a mud pipe.

The gist of the present invention is to provide an excavator for underwater dredging mounted on a barge formed by connecting a plurality of blocks.

A mud sorting and crushing unit for sorting and crushing excavated mud and a mud pressure-feeding tank unit following the mud sorting and crushing unit are provided. , a first belt conveyor that conveys the mud discharged from the lower part of the mud sorter to the upper input port of the next-stage mud crusher; and a first belt conveyor that transports the mud discharged from the lower part of the mud sorter to the upper input port of the mud crusher, and the mud that is input from the first belt conveyor into a horizontal rotating drum cage. A mud pulverizer that is transferred to the mud pulverizer and a second belt conveyor that conveys the discharged mud from the lower part of the mud pulverizer to the upper input port of the mud pumping tank unit arranged at the next stage, and the mud pumping The tank unit has two pneumatic feeding tanks juxtaposed below one input hopper so that mud can be fed in alternately, and the mud sorting and crushing unit and the mud pumping tank unit DESCRIPTION OF THE PREFERRED EMBODIMENTS Sludge dredging equipment is characterized in that it is placed on a barge in symmetry with an excavator. The present invention will be described below based on embodiments shown in the drawings.

FIG. 1 shows a plan view of the sludge dredging equipment according to the present invention, and FIG. 2 shows a front view of FIG. 1.

In the figure, reference numeral 1 indicates a block-connected barge in which five hollow floating small blocks (hereinafter referred to as small blocks) 2 are fixedly connected in parallel. Pillar (
The lower tip of the barge 1 (hereinafter referred to as ``S・Yatsu'') 3 is stuck into the water bottom to keep the barge 1 stationary in a predetermined position and prevent the barge from being blown away by wind, water currents, etc.0 and , this barge 10 is located on the left side of the bow in Figure 1, and a mud dredging device is placed on this bow side, and the dredged mud is roughly sorted on the front port side of barge 1. A screen type sorting machine 5 is installed. Also barge 1
On the port side of the stern, there is a trommel-type crusher 6 that crushes the accumulated mud sorted by the sorter 5 into fluidized mud.
At the same time, a mud pumping tank unit 8 is arranged on the stern starboard side of the barge 1 to collect the fluidized mud from the crusher 6 and forcefully transport it to land through the mud pipe 7. ing. In this way, by arranging the crusher 6 and the mud pumping tank unit 8 on the opposite side of the backhoe 4, which is a heavy object, the barge 10 can be balanced in the longitudinal direction. The units 8 and 8 are placed on the port and starboard sides of the barge 1 to maintain the left and right balance of the barge 1. 9
10 represents a first belt conveyor that conveys the accumulated mud from the sorter 5 to the crusher 6, and 10 represents a second belt conveyor that conveys the fluidized mud from the crusher 6 to the mud pumping tank unit 8. It shows. 11 is the crusher 6
．． Empty tank lla for generating electric power, compressed air, etc. to be supplied to the first and second belt conveyors 9.10° mud pressure feeding tank unit 7, etc.

The arm and arm units 11 are shown as being composed of a generator 11b and a compressor Ilc, and are arranged in the center of the barge 1. Here, the sorting machine 5. Crusher 6. The first and second belt conveyors 9 and 10 constitute a mud sorting and crushing unit.

Note that the arrangement of the dredging excavator, mud sorting and crushing unit, mud pumping tank unit, hower unit, etc. is not limited to this example, and may be appropriately arranged in consideration of the stability of the nine barges, etc. . Here, the stability of the barge refers to the balance between the front and rear, left and right sides of the barge, and it is preferable that the barge be maintained in a horizontal state, and when the excavator excavates mud on the water bottom within its movement range. It is desirable that the barge has almost no inclination.

Next, the barge of the dredging equipment in this embodiment will be explained based on FIG. 2 and FIG. The first connecting means is used at the upper end of the outer plate 12 of the small block 2, and the second connecting means is connected between the bottoms of the small block 2. It is constructed in a connected manner.

Now, to explain the connection means, the small block 2
A large number of bolt holes 13 are provided at suitable intervals along the longitudinal direction of the upper end edge of the bipolar side plate 12. This
The bolt holes 13 are for penetrating and supporting the bolts in the first connecting means described above.

On the other hand, a support bracket 15 having a fitting prosthesis 4 at its free end is fixed in the longitudinal direction on the starboard side of the bottom of the small block 2 so that its free end protrudes from the bottom to starboard. Further, on the port side of the small block 2, there is a guide sleeve 16 that has openings at the top and bottom corresponding to the fitting holes of the support brackets that protrude from the bottom of the other parallel small blocks.
is provided vertically between the upper deck and the bottom of the ship, communicating between the upper deck and the bottom of the ship and keeping the inside of the cavity of the small block 2 as water.

The small block 2 formed in this way has dimensions suitable for transportation by land transport means such as a trailer, for example, 13 m (length) x 3 m (width) - x 1.6 m.
(depth), the individually transported /J% blocks 2 are lowered to the water surface by a /J-type crane and arranged in parallel, and first, the connecting shaft 17 is connected to the guide sleeve 16 for the second connecting means. The inside is passed through the bottom of the ship, the tip thereof is inserted into the fitting hole 14 of the support bracket 15 to connect the bottom of the ship, and the bolt is then passed through the bolt hole 13 of the first connection means and tightened with the bolt. By doing so, the barge 1 shown in FIG. 1 can be constructed by integrally connecting both of these blocks.

On the other hand, the small blocks 2 located at both ends of the barge 10 are provided with through holes for the spuds 3 in the vertical direction, and the spuds 3 can be moved up and down through the through holes by a winch (not shown). If you want to stop the barge 1 at a predetermined position on the water surface, release the winch brake and
The barge 1 is kept stationary at a predetermined position by dropping the spud by its own weight and sticking the lower end of the spud into the water bottom. The spud 3 is slidable on the barge 1 so that the barge 1 can move up and down depending on changes in water level.

Further, although the barge in this example is provided with a suction set, the barge in the present invention is not limited to this, and in short, any barge that can be transported over land may be used.

,7. *0 months. E□6 Oyukure□□1 Sea machine will be explained based on Fig. 2.

The reason why the pack hoe 4 is used as the dredging excavator in this example is that once the excavation at a certain location is completed, it can run by itself and excavate at another location, and the pack hoe 4
Since the packet 18 for mud excavation is provided at the tip of the swivel arm 19, by appropriately swiveling the swivel arm 19, it is possible to excavate a wide range of mud in one place. This was adopted because it is superior in that it is possible to feed excavated mud into the sorter 5 no matter where the pack hoe 4 is located by simply adjusting the pivoting position of the arm 19 as appropriate. I'm here so I'm here. Since the pack hoe 4 is self-propelled, it is preferable to install a protective plate 20 made of wood or the like in the movement range of the pack hoe so that the endless track does not damage the upper deck of the barge 1.

Of course, the pack hoe as the dredging excavator used in this example is not a self-propelled dredging excavator, and other dredging excavators may be used, and the point is that mud can be easily introduced into the sorter. It's fine as long as it's something.

Figure 4 shows two units of mud sorting and crushing.

In this example, the sorting machine 5 is of a screen type, and a grid-like screen 22 is provided on the upper surface of the sorting machine frame 2 formed in a planar shape. Furthermore, a hopper (for collecting mud that has passed through 22 feet of one screen and guiding it to the first conveyor 9) is located between the screen 22 and the first belt conveyor 9. (not shown) is provided. The lattice spacing of the screen 22 is set to such an extent that large lumps in the excavated muddy soil will not pass through. Also, this screen 22 is attached to the sorter frame 2 through a vibration-proofing rubber 23, so when mud is dropped onto the screen 22, the impact is absorbed by the vibration-proofing rubber 23 and the screen 23 is not damaged.

Further, the crusher 6 in this example is of a trommel type,
Reference numeral 24 designates a horizontally tilted cylindrical rotating drum cage (hereinafter referred to as drum) that accommodates accumulated mud and crushes it while rolling to turn it into a ready-mixed concrete-like fluid. Both protruding ends of a fixed shaft 250 extending in the axial direction of the drum 24 are supported by the support frame 26 of the crusher 6.

On the other hand, a truncated conical sleeve 27 is slidably fitted onto the fixed shaft 25 on the upwardly inclined end surface of the drum 24, and mud is poured upward into the small diameter end of the sleeve 27. A closing plate 28 for closing the end face of the drum having an opening is fixed to the large diameter end of the sleeve 27.
A charging hopper 29 for guiding mud is provided so as to face the mud charging opening. The tip of the input hopper 29 extends to the upper end of the first belt conveyor 9. The downwardly inclined end face side of the drum 24 is still open, and one end side of a chute 30 is provided close to between these ends, and furthermore, the other end side of this chute 30 is extended to the outside of the stern of the barge l. Therefore, foreign objects such as stones and wood chips that do not pass through the drum mesh in the drum 24 slide down from the sloping upper end of the drum, pass through the sloping lower end surface, are guided by the chute 30, and are ejected out of the machine. Ru. In this case, if another purge is arranged at the stern of the barge l so as to match this chute 30, the foreign matter from the drum 24 can be disposed of.

On the other hand, three first screw conveyors 32 are arranged horizontally in parallel along the axial direction of the drum 24 on a mud receiving tray 31 provided below this drum 24, and mud receiving boxes 33& are provided. The second screw conveyor 33 is
The first screw conveyor 32 is provided at the lower part of the central portion of the axial length of the first screw conveyor 32 and at right angles to the first screw conveyor 32.

The mud receiving tray 31 is provided with a guide opening 31a adjacent to the screw conveyor 33 for the pre-medication distribution 2, and the mud sent by the first screw conveyor 32 is transferred from the guide opening 31a to the second screw conveyor 33. It is made to fall onto a screw conveyor 33. In this first screw conveyor 32 in this example, a spiral fin 34 with a right-handed screw 41 is provided on one half of the first screw conveyor 32 in order to collect the mud that has fallen from the mesh of the drum 24 at the center of the axial length of the first screw conveyor 32. Furthermore, a spiral fin 35 with a left-hand thread 41 is provided on the other half. Further, the second screw conveyor 33 is provided with a spiral fin of a right-hand thread to discharge the fluidized mud collected by the first screw conveyor 32 to the outside of the machine.

In the crusher 6 formed in this way, the accumulated mud from the first belt conveyor 9 is continuously fed into the drum 24, and is pulverized while being transferred in the rotating drum 24, to form a ready-mixed concrete-like material. Becomes a fluid body. Furthermore, since the body of the drum 24 of this crusher 6 is mesh, it also has the function of sorting out contaminants, such as empty cans, that have not been removed by the sorter 5.

In this example, the mud is discharged outside the machine by the second screw conveyor, but the present invention is not limited to this. The lower end of the second belt conveyor may also be arranged.

In addition, in this example, three first screw conveyors are arranged in parallel, but the invention is not limited to this.
The number may be appropriately selected depending on the diameter of the drum.

The crusher is usually provided with a cover to prevent the mud from scattering, but is omitted in the figure to make the structure of the crusher clear. .

Furthermore, in this example, the drum is tilted, so the mud falls from the mesh one after another without being stuck in one place, and only foreign objects such as stones and wood chips reach the slanted lower end of the drum. .

By the way, if the above-mentioned sorter 5 and crusher 6 are combined vertically, the sorted accumulated mud can be directly fed into the crusher 6, but when combined vertically in this way, the barge 1 The center of gravity of the barge 1 becomes higher and the barge 1 becomes unstable, and the load is concentrated in one place, making it difficult to maintain the balance of the barge 1. Therefore, in this example, these are separated separately. It is arranged on a barge 1, and the accumulated mud from the sorter 5 is sent to the crusher 6 by a first belt conveyor 9. In addition, since the accumulated mud from the sorter 5 has no fluidity, this first belt conveyor 9 uses a commonly used conveyor having a centipede-shaped belt surface. Then, the crusher 6 and the mud pressure tank unit 8 are not integrated but placed separately on the barge 1, and the fluidized mud discharged from the crusher 6 is transferred to the second belt conveyor 10. It is arranged to send it to the transport tank unit 8.

However, since the mud sent to the mud transport tank unit 8 by the second belt conveyor 10 is a fluid like ready-mixed concrete, if the second belt conveyor is the same as the first belt conveyor 9, In this example, the second belt conveyor 10 is an upper and lower two-stage belt conveyor ia structure, and the belt of the upper scraper belt conveyor 36 is Raising plates 37 are provided at regular intervals in the width direction of the conveying surface.

Note that the second belt conveyor 10 in this example is not limited to the one having the above-described structure, and other conveyors, such as a honeycomb conveyor, may be used.

The mud sorting and crushing unit mentioned above excavates the mud in order to be able to pump the mud produced by the dredging machine to land etc. without clogging the mud pipe.

The various machines that make up the unit were transported individually by land and loaded onto barges.9 There is.

Figures 5 and 6 show a mud pumping tank unit.

In this example, 38 indicates a cylindrical first retention tank (hereinafter referred to as tank) for storing mud, and a second tank 39 having the same structure as this first tank 38 is arranged in parallel with each other. It is placed on barge 1.

This first. In the center of the second tank 38.39, there is a
An input opening 40 for inputting mud is provided, and the first guide pipe 4
The guide pipes 41 and 42 of a two-pronged tubular hopper 43 consisting of a first and a second guide pipe 42 are connected to the input opening 40, respectively. Also, at the intersection of the guide tubes 41 and 42 of this tubular hollow/443, a first tube is provided. Second tank 38
・The free end of the dan/4' 44 is swingably provided to control the introduction of mud into the 39, and is designed to block either one of the guide pipes. An air cylinder device 45 for menstruation is connected to the side, and the swinging operation of the armpit 44 is performed by remote control. The upper end of the second belt conveyor 1o is arranged at the upper end opening of this tubular hopper 43, so that the mud from the second belt conveyor 1o is thrown into both tanks 38 and 39. In the following explanation of the tank, the first. Second tank 38・
Since both tanks 39 have the same structure, the first tank 38 will be explained. The charging opening 4o is provided with an umbrella-shaped lid 46 inside the tank 38, which has a diameter larger than that of the opening 40, and the lid 46 is further moved up and down to open the opening 4o. Operation rod 47 for opening and closing operations
The guide tube 41 is passed through the opening 40 from the outer portion of the lid 46, and its tip end is connected to the air cylinder device 48 for the lid.

On the other hand, inside this tank 38, a stirring shaft 50 having a plurality of stirring plates 49 at appropriate intervals is provided so as to be rotatable downward in the longitudinal direction of the tank 38. This rotation prevents mud from accumulating at the bottom of the tank 38. Further, an L-shaped mud discharge pipe 51 for pumping mud is provided at the bottom of the body near the end plate of the tank 38, and a remotely controllable shut-off valve, for example, an electromagnetic mud shut-off valve 52, is provided at the end of the pipe. The mud feeding pipe 7 is connected to this mud opening/closing valve 52. Further, the mud discharge pipe 51 is provided with an auxiliary air pipe 53 to prevent mud from accumulating near the bent portion of the mud discharge pipe 51.

On the other hand, at the top of the mud discharge pipe 51, there is an air supply pipe 54 for compressed air for pumping the mud in the tank 8.
A remotely controllable air on-off valve, for example an electromagnetic air on-off valve 55, is provided at the end thereof and connected to the air tank l1m of the power unit 11. Further, this tank 38 is provided with control equipment such as a mud level detector, and the lid body 46. Mud on/off valve 52. The air on/off valve 55 and the like are automatically opened and closed.

The pumping operation of the mud pumping tank unit will be explained below.

In this example, in order to maintain the continuity of the entire dredging operation, when mud is being poured into the first tank 38, the second
This operation is repeated alternately so that the mud is pumped into the tank 39.

When all the mud in the first tank 38 is pumped out, a mud level detector provided in the tank 38 detects that there is no remaining mud, and the air cylinder device 48 is operated to close the lid. The body 46 is lowered to the open state, and at the same time, the mud on-off valve 52 and the air on-off valve 55 are closed, and the damper air cylinder device 45 is operated to swing the damper/444. The second guide pipe 42 communicating with the tank 39 is closed. And the second
The fluidized mud from the belt conveyor 10 passes through the first guide pipe 41 from the upper opening of the tubular hopper 43 to the tank 38.
It is put inside. When the fluidized mud reaches the upper limit position in the tank 38, the mud level detector detects this and operates the air cylinder device 48 to lift the lid 46 upward and close the input opening 40. Further, the damper air cylinder device 45 is operated to close the first guide pipe 41, and the mud on-off valve 52 and the air on-off valve 55 are opened to transfer the fluidized mud with compressed air. It is pumped to land etc. through the mud pipe 7. At this time, compressed air is also sent to the auxiliary air pipe 53. In addition, when the damper 44 closes the first guide pipe,
The fluidized mud from the second conveyor 10 is introduced into the p1 second tank 39 through the second guide pipe 42.

Such operations are performed alternately between the first tank 38 and the second tank 39, so that the fluidized mud from the sorting and crushing unit is continuously pumped to land or the like.

Further, it is preferable to keep the stirring shaft 50 rotating when mud is introduced and when it is pumped, in order to prevent mud from accumulating.

Note) In the mud pressure tank unit in this example,
Although the tank is arranged horizontally, the tank may be tilted slightly with the mud discharge pipe side facing downward in order to discharge the mud accumulated at the bottom of the tank. Furthermore, the position of the stirring shaft is not limited to this example; it may be placed as close to the bottom of the tank as possible considering the position of the lid, mud level gauge, etc. The positions of the mud discharge pipe, the input opening, etc. are not limited to this example, and may be determined as appropriate.

As described above, according to the present invention, various devices such as barges can be transported over land, and the dredged mud is sent into the mud pipe as a fluid like ready-mixed concrete.
It has the excellent effect of being able to smoothly pump a large amount of dredged mud to land, etc., and its usability is outstanding.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the sludge dredging equipment according to the present invention, Fig. 2 is a front view of Fig. 1, Fig. 3 is a perspective view of a single rigid floating small block, Fig. 4 is a side view of a mud sorting and crushing unit, Fifth
The figure shows a perspective view of the mud pumping tank unit, and FIG. 6 shows a front view of the tubular hopper. There is. 1... Barge 2... Rigid floating small block 3... Sz4t 4... Backhoe 5... Sorting machine 6...
·Crusher

Claims (1)

[Claims] An excavator for underwater dredging, a mud sorting and crushing unit for sorting and crushing the excavated mud, and a subsequent mud pumping and tank unit are installed on a barge formed by connecting a plurality of blocks, and the said mud sorting and crushing unit is provided. A mud sorter which sorts the input dredged mud through a grid screen, and a first belt conveyor which conveys the discharged mud from the lower part of the mud sorter to the upper input port of the next stage mud crusher. a mud pulverizer that transfers and pulverizes the mud fed from the first belt conveyor in a horizontal rotating drum basket; and a mud pumping tank disposed at the next stage to collect the mud discharged from the lower part of the mud pulverizer. A second belt conveyor transports the mud to the upper input port of the unit, and the mud pumping tank unit has two pneumatic pumping tanks arranged side by side at the bottom of one loading hopper to feed the mud. The sludge dredging equipment is configured such that the lower unit of the mud sorter and the mud pressure-feeding tank unit are arranged on a barge symmetrically to the excavator.