JPH0755320B2 - Mud processing equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates to lakes, rivers, on the mud, etc. treatment MakotoSo location, such as sand or mud, such as in harbor.

[0002]

2. Description of the Related Art Conventionally, a dredging method has been known as a method of digging the bottom of a water or digging mud in a port or a river. This dredging method is roughly classified into three types, and an appropriate method is determined 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.

[0003]

Generally, in the case of dredging such as dirty soil on the bottom of the water of a port or a river, as mentioned above, earth and sand and mud are transferred to a destination through a suction pipe by a vacuum equipped with a dredger, but the water content is usually 10%. On the other hand, the ratio of sludge 1 is to suck up 10 times as much water as sludge at the same time, and there is a problem that the equipment efficiency is poor due to the large scale equipment such as suction dredger. Generally, excavated earth and sand or mud is either disposed of for a fee or used for landfill at a transportation cost, but sludge itself contains a large amount of water, so the soil solidification efficiency for landfill can be improved. Inferiorly, it was impossible to reuse as civil engineering materials and construction materials. For non-navigable bucket vessels and club vessels that scoop up or pick up dirt, mud, etc., open the earth and mud on the earth carrier next to the ship and use the earth and sand to aim for earth and mud. There is a problem that the transportation cost increases because the transportation has to be carried out to the land or a port near the destination, and if the destination is on land away from the port, it is necessary to reload the sediment on a truck or the like. In addition, the mud dredged from lakes, rivers, harbors, etc. is mixed with stone, wood, tires, construction waste, domestic waste, etc. that flow from the surrounding waters, and grass and tree miscellaneous matter that grows in the dredged area. These foreign substances must be separated for reuse as materials and construction materials. It is considered to use various separator of chain co <br/> Nbeya type or crushed type or the like for this separation, these regular grass and trees to coexist adversely affect the driving portion of the separator There is a problem that the removal work is required and that even the cohesive soil block contained in the sludge as a block is separated together with the foreign matters. When the viscous soil mass is removed and separated, the viscous soil mass must be disintegrated again to remove the foreign matters contained therein, which causes a problem that the efficiency of reuse decreases.

Therefore, the present invention is to solve the above-mentioned problems, and the first purpose thereof is to treat mud excavated and sent to the site so that it can be reused as civil engineering materials or construction materials. It is to provide a device. The second objective, mud raising lakes, rivers, and removing water from such ports scoop only sediment and mud, the efficiency of the mud treatment after
The purpose is to provide a soil processing device. A third object is, FIG Ru mud such treatment a reduction of transport costs, such as mud, which is dug up
To provide a management device. Another object of the present invention is to provide a device for treating mud and the like, which can disintegrate the viscous clay clod contained in the mud and the like as a mass and efficiently remove foreign matters from the mud.

[0005]

Means for Solving the Problem The present invention is a means for dredging sediments or mud on the bottom of a water to be placed on a dredging ship, and a means provided on the dredging ship for separating the mud from solid matter such as crushed rock and gravel. If, comprising a pump means for pumping the destination the separated the mud or the like, and mud processing means for mixing with accommodating such mud sent to the destination solidifying agent by a pipe
And a mud treating device, wherein the separating means is a feeder.
-The device is provided, the feeder device has a plurality of shafts provided at equal intervals, a drive unit for rotationally driving each of these shafts at a constant speed and in the same direction, and at least a pair of blades provided on the shaft , When the blades of the adjacent shafts rotate
Those configured to intersect at intervals.

[0006]

The mud dredged from the bottom of the water can be pumped through the pipe to the destination, and the mud and the like can be mixed with the solidifying agent for reuse. Further, in the separating means, the rotating blades cause foreign matters contained in mud and the like, viscous soil blocks, etc. to move and separate or collapse while rotating and moving vertically.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 10 show an embodiment of the present invention,
The dredger 1 assembled with nine hollow blocks 2 made of steel is fixed in position by a fixing stopper 4 placed at the bottom of the dredging place A of mud 3 such as lakes, rivers and harbors, and on the dredger 1. The well-known self-propelled back four is installed,
A replaceable closed hydraulic type grab bucket 7 is provided at the tip of the arm 6 of the back four. The back four 5, the arm 6, and the grab 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 the top opening separates solid matter (not shown) such as wood and vinyl from the mud 3. The primary vibrating screen 10 is provided obliquely, and the primary vibrating screen 10 has a vibrating mechanism (not shown). The solid content such as wood or vinyl separated from the mud 3 by the screen 10 is provided on the side of the screen 10. A discharge path 11 for discharging the 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 secondary vibrating screen 15 having a vibrating mechanism (not shown) for separating solid matter (not shown) such as crushed rock and gravel, for example, having a side of 5 to 10 m / m mesh is provided below the discharge port 14. A hopper 16 is provided below this. 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 part of the communication pipe 19 is connected to an upper part of a stirring tank 20. Inside the stirring tank 20, a stirring rotor 21 having a stirring blade 21A is provided. The stirring blade 21A is rotated by a rotation drive 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.
22 is a suction pipe of a piston type high pressure pump 23 which is a pump means.
It is connected to 23A. The piston type high pressure pump 23
Is provided with a pulley 24 for transmitting the rotation of a prime mover (not shown), and has a transmission mechanism 27 for converting the rotation of the pulley 24 into a reciprocating motion of a piston 26 in a cylinder 25, and an upper portion of the cylinder 25 and the pressure vessel 28. Side is connected by a transmission pipe 29, a connecting pipe 30 is connected to the lower portion of the pressure vessel 28, and a valve 31 is provided at the other end of the connecting pipe 30.
The suction pipe is opened only in 32 directions, and is further branched in the middle of the communication pipe 30 to be connected with the suction pipe 23A.
Valve that opens only in the direction of inflow from 23A into the connecting pipe 30
33 are provided. The mud 3 flowing in from the suction pipe 23A flows into the pressure vessel 28 at a substantially central height position, and oil is filled into the transfer pipe 29 and the cylinder 25 from the upper portion of the pressure vessel 28, so that the piston The height of the mud 3 in the pressure vessel 28 rises due to the retreat of 26, the mud 3 on the side of the stirring tank 20 flows into the communication tube 30 from the suction pipe 23A, and the valve 33 closes due to the forward movement of the piston 26. Discharge side in the formed state
The valve 31 of 32 is opened, and the mud 3 is pumped to the discharge side 32.

The prime mover of the pump 23 is the dredger 1
Power is supplied from a generator (not shown) installed above.

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 23 is extended to a mud treatment device 35 which is a mud treatment means provided at a destination on land. Incidentally, reference numeral 36 in the drawing denotes a float attached to the pressure feed pipe 34 at the dredging location A.

The soil treatment device 35 is installed at a landfill site or the like, and a silo 38 for storing a solidifying agent 37 such as cement or raw coal is installed in the vicinity of the installed site. A screw conveyor 39 is provided, and 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 the screw conveyor 39, and transferred from the pressure feed pipe 34 to the mud treatment device 35. The hopper is controlled by a control device (not shown) according to the supply amount of the mud 3.
A feeder such as a blower or a pump (not shown) for placing the solidifying agent 37 in 41 to the mud treatment device 35 in a powder state 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 bucket 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 3 which has passed through 10 is dropped onto the vibrating secondary vibrating screen 15 which is placed in the opening 9A by the driven screw conveyors 12 and 13. The secondary vibrating screen 15 separates solid materials such as crushed rock and gravel contained in the mud 3, and the mud 3
Is sent by the piston type high pressure pump 23 in a state where water, sand and the like in the mud 3 are uniform by the stirring rotor 21 which drops from the communication pipe 19 into the stirring tank 20 and rotates, and the mud 3 is sent by the pressure feeding pipe 34.
The muddy soil 3 sent through the muddy soil processing device 35 is mixed with the solidifying agent 37 sent from the solidifying agent supply device 40 by the mixer 42 and discharged from the discharge port 43.

As described above, in the present embodiment, since the earth and sand and mud 3 on the bottom of the water are drained and dredged to be opened on the dredger 1, the amount of water contained in the mud 3 obtained after dredging is small and thereafter. When treating the soil, it does not take time to drain water, and the curing period of the treated soil 3 can be shortened, so that the treatment efficiency can be improved. Also, solid materials such as crushed rock and gravel are separated from the mud 3, etc., and the mud 3 is stirred and then pressure-fed to the destination through a pipe. Can be reduced.
Furthermore, by mixing the mud soil 3 sent to the destination with the solidifying agent 37, the solidified mud soil 3 can be reused as a civil engineering material or a construction material such as a foundation material for a paved road.

In this embodiment, the mud on the bottom 3
Since the oil is dredged using the closed hydraulic type grab bucket 7, the mud content of 10 which is provided by the conventional vacuum method is used.
Mud 3 with a mud content of 90 to 95% can be obtained compared to ~ 15% mud, the process of removing water before processing mud 3 can be omitted, processing efficiency can be improved, and the sealed hydraulic pressure can be increased. The use of the mold grab bucket 7 reduces the diffusion of the muddy soil 3 into the water when the muddy soil 3 is collected, and the contamination of the water can be minimized. In addition, even if a normal grab bucket is used, mud with a mud content of 70 to 80% can be obtained.

Solid matter such as wood, vinyl, and pebbles is separated from the mud 3 having a high mud content by the primary vibrating screen 10 and the secondary vibrating screen 15, and the stirring rotor is set in the stirring tank 20.
Since the water is agitated and sent to the piston type high pressure pump 23 by 21 so that the water is not separated from the mud 3, the pump 23
It is possible to reduce the amount of the solidifying agent 37 used by sending the mud 3 having a high mud content to the mud treating device 35, and the mud 3 mixed with the solidifying agent 37 has a low water content. Therefore, the curing period is short, and the efficiency of mud treatment can be improved and the cost can be reduced. Further, the mud soil 3 mixed with the solidifying agent 37 can be widely and effectively utilized for embankment, roadbed, construction, backfilling, backfilling, etc. as well as landfilling.

Further, according to the present invention, the above-mentioned apparatus for treating mud and the like is provided.
In this arrangement, a feeder device 45 is provided in front of the separating means 18 to form the separating means 18A. That mud 3 taken at the sealing hydraulic type grab bucket 7, after treatment with the Fuida device 45 is configured to configured to send before SL separating means 18.

In the feeder device 45, a hopper 47 is provided on an upper portion of a frame 46 having a substantially rectangular plane shape, and a plurality of shafts 49 are axially supported at equal intervals via bearings 48, 48A between longitudinal side plates of the frame 46, A pair of blades 50 are replaceably attached to the shaft 49, a chute portion 51 is provided at the lower portion of the frame 46, and an opening portion 51A is provided at the lower portion of the chute portion 51. A pair of integrated sprockets 52, 52A and a protective torque limiter 53 for transmitting the rotation of the sprockets 52, 52A to the shaft 49 are provided at one end of the shaft 49, and the sprockets 52 of adjacent shafts 52 are also provided. , 52A are alternately hooked with chains 54, and the rotation of a variable speed prime mover 55 provided at the lower part of one side of the frame 46 is transmitted by the chain 54A hooked on the sprocket 52 on one side of the frame 46. Therefore, the shafts 49 are synchronized, that is, rotate at the same speed in the same direction. Then, the sprocket 52, 52
A, the protective torque limiter 53, the chains 54, 54A, and the variable speed prime mover 55 constitute a drive unit 55A. The hopper 47 has an upper opening and a side surface forms an angle of repose,
Moreover, it has a capacity larger than the capacity of the sealed hydraulic type grab bucket 7. On the other side of the frame 46, a shouter 56 communicating with the inside of the hopper 47 is obliquely installed. Further, the frame 46 is provided with a support leg 57 on one side lower part, the lower part of the support leg 57 is fixedly supported on the dredger 1 via a hinge part 58, and the other side is an extendable support hydraulic cylinder. It is supported by 59, and the upper and lower sides of the supporting hydraulic cylinder 59 are pivotally attached to the lower part of the frame 46 and on the dredger 1. Reference numeral 60 denotes a shower ring nozzle mounting pipe erected on the upper part of the hopper 47, and sprays pressure-fed water from a pressure-fed device such as a pump (not shown) from a plurality of nozzles 61.

The blade 50 has a trapezoidal corrugated shape made of steel, hard rubber or the like, that is, a trapezoidal opening 50A is formed on a flat plate at equal intervals, and the end portion of the blade 50 is the shaft. each mounted One not a pair so as to sandwich the 49 up and down, and by the mounting member 62 such as bolts and nuts have become removable interchangeable from the shaft 49. Further, the blades 50 of the adjacent shafts 49 are spaced apart from each other by, for example, about 5 mm, and the trapezoidal openings 50 of the blades 50 are formed.
Adjacent blades 50 arranged to intersect in A
In addition, the difference in angle θ is set within 90 degrees. That is, the blade 50 of the other-side shaft 49 adjacent to the blade 50 of the one-side shaft 49 is set at an angle θ advanced by, for example, about 80 degrees in the clockwise direction 63 in FIG. Further, the fixed blade 50 on one side in the frame 46 is provided, the other side is provided with an opening 64 so as to communicate <br/> before carboxymethyl Yuuta 56 top without providing the blade <br/> There is.

Next, the operation of the feeder device 45 will be described.

When the variable speed prime mover 55 is driven, the chain 5
Each sprocket 52, 52A rotates via 4, 54A, and this rotation is transmitted to each shaft 49 by the protective torque limiter 53, and each blade 50 rotates at a constant speed in the clockwise direction 63. The mud 3 introduced into the hopper 47 by the sealed hydraulic grab bucket 7 drops from the trapezoidal opening 50A to the chute 51, while the mud 3 is contained in the mud 3 and is larger than the trapezoidal opening 50A. axis as well as moved in the direction D side feeding by the rotation of each blade 50 as shown in FIG. 10, the adjacent angle θ by each blade 50 rotating at differential Rikai rolling and vertical movement while feeding direction D side 49, collide with blade 50.
As a result, the viscous soil mass C collapses, and the foreign matter B adheres to the separated mud to separate the mud from the chute.
It drops to 51. Further, it is sandwiched between the rotating blades 50, 50 like the cohesive soil mass E, and collapses due to the shearing force received from them. Then, the large foreign matters B and the like are sent to the Shuter 56. In addition, a viscous soil mass (not shown) that is large and cannot be sent in the feed direction D by the rotation of the blade 50 is
The blades 50 move up and down at substantially the same position by the rotation of the blades 50, and the tips of the blades 50 scratch or project to collapse.

As described above, in this embodiment, the dredger 1
The mud, etc. provided above is separated from solid materials such as crushed rock and gravel.
The separating device 18 is provided with a feeder device 45.
The device 45 includes a plurality of shafts 49 arranged at equal intervals and each of these shafts 49.
Drive unit 55A for rotating and rotating the shaft at a constant speed and in the same direction;
And a lube blade 50 is provided at least one pair 49, next
The blades 50, 50 of the shafts 49, 49 contacting each other have an interval at the time of rotation.
Since the blades 50 are arranged to intersect with each other, the foreign matter B, the viscous soil mass C, etc. are rotated and vertically moved by the rotating blades 50, and the mud is moved in the feeding direction D while being separated or collapsed. Shoot, shoot section 51
Mud is supplied to the
What it has been difficult to conventional separation can also be efficiently separated, thus Ri send mud to without interruption next step,
The efficiency of mud treatment after this can be improved. Further, due to the peristaltic movement, the mud attached to the plant roots and the like is separated and then discharged from the Shuter 56.

Further, the shaft 49 fitted with a blade 50, the protection because of the rotation via the torque limiter 53 to so that to transfer, without consuming unreasonable device even under an excessive load on the blade 50 the safe driving can line Ukoto.

Further, if the frame 46 is tilted by the supporting hydraulic cylinder 59 to increase the moving time in the feed direction,
That is, the processing time by the rotating blade 50 can be lengthened to reliably disintegrate the viscous soil mass C and the like.
Further, this disintegration can be performed while switching the variable speed prime mover 55 between forward and reverse rotation. Furthermore, variable speed prime mover 55
By rotating at high speed and inclining the frame 46, the cohesive soil mass C and the like can be collapsed in a short time.

The present invention is not limited to the above-mentioned embodiment, for example, a shovel may be used instead of the grab bucket, and air pressure feeding or the like may be used as a means for feeding mud with a pipe. Various types of pumps can be applied. Also, the blade 50 of the feeder device 45
The shape of the
The dimensions and materials can be selected as appropriate. The protection torque limiter 53 is Ru <br/> there can be used those automatic return. Further, three or more blades 50 may be attached to one shaft 49, and a projection or a frame-shaped convex portion may be provided on the surface of the blade 50.

[0027]

The present invention provides a means for dredging sediment or mud on the bottom of water to be placed on a dredger, and a means provided on the dredger for separating the mud from solid matter such as crushed rock and gravel.
And pump means for pumping the separated the mud or the like to a destination, the pipe mud like process instrumentation that includes a mud processing means for mixing the solidifying agent accommodating like mud sent to the destination by
A location, provided Fuida device to said means for separating,
The Fuida device includes a plurality of axes provided at regular intervals, a driving unit for rotationally driving the respective axes at equal velocity and in the same direction, and a blade provided at least one pair to the shaft, the shaft adjacent said blade each other are those configured to intersect at intervals during rotation, can be processed for reuse mud sent to be dug up site as civil engineering materials and construction materials, lakes, It is possible to remove water from rivers and harbors and scoop only soil and mud to improve the efficiency of subsequent mud treatment, and further reduce the cost of transporting dug mud, etc. It is possible to provide a treatment device for mud and the like that can disintegrate the cohesive soil mass contained as a mass and efficiently remove foreign matters from the mud.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing the surroundings of a mud treatment device showing an embodiment of the present invention.

FIG. 4 is an explanatory view showing a pump showing an embodiment of the present invention.

FIG. 5 is an enlarged plan view of a main part of a feeder device showing an embodiment of the present invention.

FIG. 6 is an enlarged plan view of a main part of a feeder device showing an embodiment of the present invention.

7 is a front view of Fuida apparatus according to an embodiment of the present invention.

8 is a plan view of Fuida apparatus according to an embodiment of the present invention.

9 is a side view of a Fuida apparatus according to an embodiment of the present invention.

FIG. 10 is an explanatory diagram of a feeder device showing an embodiment of the present invention.

[Explanation of symbols]

1 Dredger 3 Mud 9 Dredging means 18 Separation means 23 Pump (pump means) 34 Pumping pipe (pipe) 35 Mud treatment device (mud treatment means) 37 Solidifying agent 40 Solidifying agent feeding device (solidifying agent feeding means) 45 Fider device 49 Shaft 50 blade 55A drive unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masakazu Nakano 146 Daimon, Daimon, Izumozaki-cho, Mishima-gun, Niigata Prefecture (72) Inventor Tadashi Ishibashi 3-6-6 Aoki, Kawaguchi City, Saitama (56) References Flat 1-262999 (JP, A)

Claims (1)

[Claims] 1. A means for dredging sediment, mud, etc. on the bottom of water to be placed on a dredger, a means for separating the mud, etc. from solid matter such as crushed rock, gravel, etc., provided on the dredger, and the separated mud Pump means for pumping etc. to the destination,
There in mud or the like processing device that includes a mud processing means for mixing with accommodating such mud sent to the destination solidifying agent by a pipe
And a feeder device is provided in the separating means.
Zehnder device has a plurality of axes provided at regular intervals, a driving unit for rotationally driving the respective axes at equal velocity and in the same direction, and a blade provided at least one pair to the shaft, adjacent said
Mud, etc. processing apparatus in which the blade cross axis is characterized by being configured so as to intersect at intervals during rotation.