JPH0656027B2 - Pumping device for processing equipment such as mud - Google Patents

Description

TECHNICAL FIELD The present invention relates to a pump device in a device for treating mud such as sediment and mud in lakes, rivers, ports and the like.

[Prior Art] Conventionally, for example, a dredging method is known as a method for dredging mud or the like in a port or a river or digging a water bottom. This dredging method is 3
It is roughly divided into two types, and an appropriate method is decided according to the soil quality. General dredging uses a general dredging ship without crushing rocks, and accounts for most of the dredging work. This dredger uses a pump ship that sucks up sediment and mud with water and sends it to the destination using a pipe floating on the water, a dipper boat that scratches sediment and mud with the blade of a shovel, and many chained buckets. It is known that there are bucket boats that open up mud tanks at the upper end of ladders, and grab boats that grab dirt and mud with grabs. This external rock dredging and blasting dredging are also known as dredging methods.

[Problems to be Solved by the Invention] The above-mentioned soil and mud obtained by dredging are advantageous and are either discarded or transported to landfill sites with transportation costs such as truck transportation. However, if there is a place away from the dredging site, an increase in transportation cost to the site is unavoidable. In addition, for non-navigable bucket boats and club ships that scrape up and pick up dirt, mud, etc., open the earth and mud on the earth carrier next to the ship, and use this earth carrier to carry out earth and sand. Had to be transferred to a destination or a port near the destination, and when the destination was on land away from the port, it was necessary to reload the sediment with a truck or the like, and there was a problem that the transfer cost increased.

In addition, as mentioned above, in a pump ship, sediment and mud can be transferred to a destination such as a landfill site through a suction pipe by a vacuum equipped with a dredging ship, together with water. Therefore, it takes up 10 times more water than mud at the same time, and there is a problem that the equipment efficiency is inferior due to the large equipment such as suction dredger.
In addition, the destination such as landfill is not limited to near the dredging place, but when transferring by a pipe for a long distance, pumping means such as pumps at several places in the middle of the pipe to the destination is required for pump performance of a normal pump ship. In addition, mud containing a large amount of water was inferior in the efficiency of solidification of the ground for landfill, and it was impossible to reuse it as a civil engineering material or a building material.

Therefore, the present invention is to solve the above problems, the first purpose is to remove the water from lakes, rivers, harbors, etc. and scoop up the earth and sand and mud pumped from the dredging place to a distant destination, It is an object of the present invention to provide a pump device in a device for treating mud or the like that improves the efficiency of subsequent treatment of mud or the like. A second object is to provide a pump device in a mud treatment device that enables long-distance transfer of dug mud and can reduce transfer cost.

[Means for Solving the Problem] The present invention relates to the present invention that the bottom of the water, mud and the like are drained by dredging means and dredged and opened on a dredger, and crushed rock and gravel mixed with the mud and the like by the separating means on the dredger. After separating the solid matter such as, and stirring the mud by the stirring means, the mud is pumped to the destination through the pipe by the pump device, and at the destination, the mud is mixed with the solidifying agent in the mixing means and the mud is regenerated. In the apparatus for treating mud and the like to be used, the pump device is provided in the pipe, and two unidirectional valves that are opened in the transfer direction of the mud and the pipe are provided in the middle of each unidirectional valve. A cylinder having a piston provided in communication with each other and connected to a reciprocating drive device, and a lower portion provided between the cylinder and the pipe and communicating with the pipe at a lower side thereof to the height of a central portion of the mud. And a pressure vessel formed by filling oil from the height of the substantially central portion to the cylinder.

[Operation] Due to the hydraulic pressure generated by the reciprocating movement of the piston in the cylinder, mud containing less water can be pressure-fed to the pipe for long-distance transfer.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIGS. 1 to 4 show one embodiment of the present invention, in which a dredging ship 1 in which nine hollow blocks 2 made of steel are assembled is located at the bottom of a dredging place A of mud 3 such as lakes, rivers and harbors. The dredger 1 is fixed in position by a fixed stopper 4 that has been placed.
A well-known self-propelled back fore 5 is mounted on the top of the arm 6 of the back fore 5, and a replaceable closed hydraulic type grab bucket 7 is provided. The back four 5, the arm 6 and the blob bucket 7 constitute a dredging means 8. The dredger 1 can be disassembled into nine blocks 2 and can be transported in each block 2.

A bottomed separation tank 9 having an open top is provided in the upper part of the center of the dredger 1, and this upper opening separates solid matter (not shown) such as wood and vinyl from the mud 3 into a primary vibrating screen. 10 is provided obliquely, and this primary vibrating screen 10 has a vibrating mechanism (not shown).
A discharge path 11 for discharging the solids such as wood and vinyl separated from the mud 3 by the screen 10 on the side of the screen 10.
Is provided. In the separation tank 9, a horizontal feed screw conveyor 12 for feeding the mud 3 and a plurality of vertical feed screw conveyors 13 are provided in an opening 9A at the bottom thereof, and a discharge port 14 communicating downward is provided in the opening 9A. Has been.
A vibrating mechanism (not shown) is provided under the discharge port 14 to separate solid matter (not shown) such as crushed rock and gravel, for example, 1
A secondary vibrating screen 15 having a side of 5 to 10 m / m mesh is provided, and a hopper 16 is provided below the secondary vibrating screen 15. A discharge path 17 for discharging the solid matter such as crushed rock and gravel separated by the secondary vibrating screen 15 is provided on the side of the hopper 16. Then, the primary vibrating screen 10, the secondary vibrating screen 15 and the like constitute a separating means 18.

A communication pipe 19 is provided at the lower opening of the hopper 16, and a lower portion of the communication pipe 19 is communicated with an upper portion of a stirring tank 20 as a stirring means. Inside the stirring tank 20, a stirring rotor 21 having a stirring blade 21A is provided. Is provided, and the stirring blade 21A is rotated by a rotation driving device (not shown) to stir the mud 3 in the stirring tank 20. A connecting pipe 22 is provided on the other side of the stirring tank 20, and the connecting pipe 22 is a suction pipe which is a pipe of the piston type high pressure pump device 23.
It is connected to 23A. The piston type high pressure pump device
A pulley 24 to which the rotation of the prime mover (not shown) is transmitted
Is provided, and has a transmission mechanism 27 that converts the rotation of the pulley 24 into the reciprocating motion of the piston 26 in the cylinder 25, and the drive unit 27A is configured by the prime mover, the pulley 24, the transmission mechanism 27, and the like. The upper side of the pressure vessel 28 is connected by a transmission pipe 29, and a communication pipe 30 is connected to the lower side of the pressure vessel 28.
And the first one-way valve at the other end of the connecting pipe 30.
31 is provided, and the first one-way valve 31 is opened only in the direction of the discharge side 32, and further branches in the middle of the communication pipe 30 to communicate with the suction pipe 23A, and the suction pipe 23A is connected to this branching point.
A second one-way valve 33 is provided which opens only in the direction of inflow into the connecting pipe 30 from. And the suction pipe 23A
The mud 3 flowing in from the pressure vessel 28 is substantially in the central portion B.
The oil C flows into the height position, the oil C is filled in the transfer pipe 29 and the cylinder 25 from the upper part of the pressure container 28, and the height of the mud 3 in the pressure container 28 rises due to the retreat of the piston 26, and the suction The mud 3 on the side of the agitation tank 20 flows into the communication pipe 30 from the pipe 23A, and the forward movement of the piston 26 opens the valve 31 of the discharge side 32 while the valve 33 is closed, and the mud 3 is discharged. Pumped to 32.

In the figure, D is an oil tank, E is an air vent valve, F is an oil supply valve, G is an oil detection valve, H is an oil level detection valve, I is a slurry detection valve for the mud 3, etc., and J is an air chamber. , K is a safety valve, and L is a pressure gauge. The prime mover of the pump device 23 is supplied with electric power from a generator (not shown) installed on the dredger 1.

A pressure feed pipe 34 made of a steel pipe or the like connected to the discharge side 32 of the piston type high pressure pump device 23 is extended to a mud treatment device 35 which is a mud treatment means provided at a land destination. Incidentally, reference numeral 36 in the drawing denotes a floating body mounted on the pumping pipe 34 on the water surface of the dredging place A.

The mud treatment device 35 is installed in a landfill site, etc., and a silo 38 for storing a solidifying agent 37 such as cement and quicklime is installed in the vicinity of this installation site, and this silo 38 is provided with a screw conveyor 39. This screw conveyor
The solidification agent 37 is sent to the hopper 41 of the solidification agent supply device 40 which is the solidification agent supply means by 39, and the control device is controlled according to the supply amount of the mud soil 3 transferred from the pressure feed pipe 34 to the mud treatment device 35. (Not shown) allows the solidifying agent in the hopper 41 to
A feeder such as a blower or a pump (not shown) for placing 37 in the powder state to the mud treatment device 35 is provided.
A mixer 42 for mixing the mud 3 and the solidifying agent 37 is provided in the mud treating device 35, and an outlet 43 for discharging the mud 3 mixed with the solidifying agent 37 by the mixer 42 is provided in the lower part. The discharge port 43 is provided with an opening / closing lid 44.

Next, the operation of the above configuration will be described.

The mud 3 deposited on the water bottom of the dredging place A is collected by the closed hydraulic grab basket 7 attached to the arm 6 of the back four, and the mud 3 having a mud content of 90 to 95% is obtained. Then, the back fork 5 is swiveled to open the bucket 7 on the primary vibrating screen 10, and the mud 3 dropped from within the bucket 7 is vibrated by the vibrating primary vibrating screen 10 to separate solid materials such as wood and vinyl, and further the screen. The mud soil 3 that has passed through 10 is placed in the opening 9A by the driving screw conveyors 12 and 13 and vibrates.
Fall on. With this secondary vibrating screen 15, mud 3
The solids such as crushed rock and gravel contained in are separated, and the mud 3 drops from the communication pipe 19 into the stirring tank 20 and is rotated by the stirring rotor 21 so that the water and sand in the mud 3 are uniform. It is sent to the piston type high pressure pump device 23.

When the piston 26 of the pump device 23 retracts, oil C and mud 3
The oil C flows into the cylinder 25 side from the pressure container 28 which is separated into the upper and lower parts due to the difference in specific gravity, the mud 3 height of the pressure container 28 rises, and the first one-way valve 31 is closed. The second one-way valve 33 is opened and the mud 3 on the side of the stirring tank 20
Flows into the connecting pipe 30. When the piston 26 moves forward, the hydraulic pressure of the oil C lowers the height of the mud 3 in the pressure vessel 28, the second one-way valve 33 is closed and the first one-way valve 31 is opened to communicate. The mud 3 in the pipe 30 is pumped to the pump pipe 34. Then, the mud 3 is sent into the mud processing device 35 through the pressure feeding pipe 34, and sent to the mud processing device 35.
The solidification agent 37 sent from the solidification agent supply device 40 to the mixer
It is mixed by 42 and discharged from the discharge port 43.

As described above, in the present embodiment, the mud content 3 at the bottom of the water is dredged using the closed hydraulic type grab bucket 7, so that the mud content of 90% is obtained as compared with the mud content of 10 to 15% obtained by the conventional vacuum method. Pressure vessel for pumping ~ 95% mud 3
The oil C and the mud 3 in 28 are vertically separated and filled according to their specific gravities, and the reciprocating motion of the cylinder 25 in the piston 26 applies hydraulic pressure to the mud 3 to pump the mud 3 at high pressure. The mud 3 can be transported by a pipe for a long distance. As an example, when the cylinder 25 has an inner diameter of 160 mm and the piston 26 has a stroke of 350 mm and two cylinders 25 are provided and the axial power is 40 kg / cm ² , the mud 3 having a high mud content is
It is possible to pump about 20 to 30 km by one pump device 23. And mud with high mud content is treated with mud
The amount of the solidifying agent 37 used can be reduced by sending the solidifying agent 37 to 35, and the mud 3 mixed with the solidifying agent 37 has a low water content, so that the mud treating efficiency can be improved. Further, the mud soil 3 mixed with the solidifying agent 37 can be widely and effectively utilized not only for landfill but also for embankment, roadbed, construction, backfilling, burying and the like.

Even when a normal grab bucket is used, mud having a mud content of 70 to 80% can be obtained.

In addition, the pump device 23 can transfer the mud 3 from the dredging place A of the dredger 1 to the mud treatment device 35 provided at the destination such as a landfill by a pipe for a long distance, and the mud 3 can be used by an ordinary ship as in the past. Transport to a port and then transfer to a truck to a destination, which increases transport costs.
It is possible to reduce the transfer cost to the destination of the mud 3.

In addition, the movable parts such as the piston 26 of the pump device 23 are directly
Therefore, the durability of the pump device 23 itself is high without contacting the.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and various performances can be selected for the shaft power of the pump device. Further, a shovel may be used instead of the grab bucket. Further, the number of pistons and cylinders or the number of pressure vessels provided in the pump may be appropriately selected.

[Effects of the Invention] The present invention is to remove solid water or mud on the bottom of water by dredging means and dredge it to open it on a dredging ship, and to put solid matter such as crushed rock and gravel mixed in the mud etc. by the separating means on the dredging ship. After stirring and mixing the mud with the stirring means, the mud is pumped to the destination through the pipe with the pump device, and the mud is mixed with the solidifying agent in the mixing means at the destination so that the mud can be reused. In the apparatus for treating mud and the like, the pump device is provided in communication with the pipe in the middle of the two one-way valves provided in the pipe and opened in the transfer direction of the mud. And a cylinder having a piston connected to a reciprocating drive device, and the mud is filled to a height of a substantially central portion by connecting a lower portion provided between the cylinder and the pipe to the pipe. It is equipped with a pressure vessel that is filled with oil from the above-mentioned approximately central portion height to the cylinder, and removes water from a port or the like and scoops up earth and sand or mud to a destination far from a dredging place. It is possible to provide a pump device for a mud treatment apparatus that can be pumped and can improve the efficiency of the subsequent mud treatment, enable long-distance transportation of dug mud, and reduce the transportation cost. .

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is an explanatory view showing the pump device, FIG. 3 is a plan view thereof, and FIG. 4 is an explanatory view showing the surroundings of the mud treatment device. DESCRIPTION OF SYMBOLS 1 ... Dredger, 26 ... Piston 3 ... Mud, 28 ... Pressure vessel 8 ... Dredging means, 27A ... Reciprocating drive device 18 ... Separation means, 34 ... Pressure feed pipe (pipe) 20 ... Stirring tank (stirring means), 37 ... Solidifying agent 23 ... Pump device, B ... Central part 23A ... Suction pipe, C ... Oil 25 ... Cylinder 31 ... First directional valve 33 ... Second directional valve

Claims (1)

[Claims] Claims: 1. Sand and mud on the bottom of the water is drained by dredging means and dredged and opened on a dredger, and solid materials such as crushed rock and gravel mixed with the mud and the like are separated by separation means on the dredger. After stirring the mud with the stirring means, pump the mud through the pipe to the destination,
In a device for treating mud and the like which allows the mud to be reused by mixing it with a solidifying agent in a mixing means at a destination, the pump device is provided in the pipe and is opened in the mud transfer direction. A one-way valve, a cylinder having a piston connected to the reciprocating drive device provided in the middle of the one-way valve, and a lower side provided between the cylinder and the pipe. A pump in a device for treating mud etc., comprising: a pressure container communicating with the pipe to fill the mud to a height of approximately the central portion and filling the cylinder to oil from the height of the approximately central portion. apparatus.