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WO2008038913A1 - Apparatus for removing deposit and water - Google Patents

Apparatus for removing deposit and water Download PDF

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Publication number
WO2008038913A1
WO2008038913A1 PCT/KR2007/004385 KR2007004385W WO2008038913A1 WO 2008038913 A1 WO2008038913 A1 WO 2008038913A1 KR 2007004385 W KR2007004385 W KR 2007004385W WO 2008038913 A1 WO2008038913 A1 WO 2008038913A1
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WO
WIPO (PCT)
Prior art keywords
water
drum
suction
deposits
water system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2007/004385
Other languages
French (fr)
Inventor
Shi Chun Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2008038913A1 publication Critical patent/WO2008038913A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
    • B01D21/20—Driving mechanisms
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/006—Dredgers or soil-shifting machines for special purposes adapted for working ground under water not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel

Definitions

  • the present invention relates to an apparatus for removing deposits and water from the bed of a water system, which is capable of efficiently getting rid of water and deposits on the bottom of a water system, such as a sea, a river, a lake, and a pond.
  • deposits deposited on the bed of a water system such as a sea, a river, a brook, a lake, and a pond, contain pollutants, such as organic material and heavy metals. If the deposits on the bottom of a water system are left untreated for a long time and thus the amount thereof increases as time passes, the lower part of the deposits gradually decays due to insufficient oxygen and toxicity and thus the water system becomes an environment in which living things cannot survive, resulting in ecocide. As a result, the water system loses its natural purification ability. Accordingly, the deposits on the bed of the water system must be periodically removed by a proper removal method.
  • the deposits are first drawn out of the water system by a grab bucket installed in a dredging craft and are then transferred to a location outside the water system.
  • a long pipe is first introduced into the water system in a manner such that the end of the pipe reaches the bed of the water system and then the deposits and water on the bottom of the water system are drawn out by pumping pressure.
  • the former method (using the dredging craft) has disadvantages in that the operation speed is very low, it is impossible to effectively get rid of the deposits on the bed of the water system because the deposits are apt to be suspended on the water during the deposit removal process, and there is the probability that water pollution will spread around the spot at which a deposit removal process is performed due to suspension of the deposits.
  • the latter method (using a suction device such as a pipe and a pump) also has disadvantages in that suction force is only applied in a very limited region, so that the deposit removal can be locally accomplished, the deposits diffuse into water around the operation spot, and troublesome work of frequently clearing a straining portion provided to the end of the pipe is required because holes in the straining portion are easily clogged by foreign matter (plastic bags and the like) and thus the suction force applied to the lower end of the pipe is decreased.
  • the above two methods are similar in the point that the methods must be conducted in a state of being at a fixed location or are useful for the case when they are performed at a single location while being held immovable. That is, they are not suitable for migratory operations and thus they are not suitable for continuous work over a wide area.
  • the present invention is made in view of the above mentioned problems and thus there is provided an apparatus for removing deposits and water in a water system, which has a good migratory characteristic by employing a drum which can rotate, has a straining portion on at least part thereof, has a design capable of discharging deposits and water inhaled by a suction device outside the drum, and has a sectioning plate restricting the flow and turbulence of the deposits and water so that the deposits and water flow near a suction hole of the suction device in order to prevent the suction hole from clogging when collecting the deposits and water and in order to prevent the deposits from spreading and diffusing into water around an operation spot during the removal of the deposits.
  • an apparatus for removing deposits and water in a water system including a rotatable drum formed partially or entirely of a straining sieve, so as for deposits and water on the bed of a water system to be able to be introduced into the drum, a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft of the drum, in which one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum, and the suction device is connected to a transfer pipe which transfers the deposits and water, which are introduced into the drum, outside the drum, and a sectioning plate sectioning the space inside the drum into a first space relatively near the suction holes (or hole) and a second space relatively far from the suction holes (or hole) in order to limit the flow of the deposits and the water so that the deposits and the water are introduced into the drum through a portion of the straining sieve nearer the suction holes (or suction
  • either the cylinder portion or a disk portion be provided with a plurality of backings.
  • the backings protrude from the outer surface of the cylinder portion.
  • the backings may extend in the axial direction of the cylinder portion.
  • the protruding end of each of the backings may be saw-toothed.
  • the backings protruding from the outer surface of the cylinder may be oriented at an angle relative to an imaginary line leading towards a rotation center.
  • the suction device be a ring- shaped pipe. Part of the ring-shaped pipe may serve as the suction pipe.
  • a delivery pipe may be connected to a portion of the ring-shaped pipe, the portion being disposed on the opposite side of the suction pipe.
  • the suction device may be an L-shaped or a straight-line-shaped pipe, and part of the L-shaped or the straight-line-shaped pipe may be the suction pipe.
  • the delivery pipe may be connected to a portion of the L-shaped or the straight-line-shaped pipe, the portion being disposed on the opposite side of the suction pipe.
  • the ring- shaped or the L-shaped suction pipe may be connected to a buoy at a portion connected to the delivery pipe, so that the connected portion of the ring-shaped or the L-shaped suction pipe floats and is thus spaced apart from the bed of the water system by a predetermined distance.
  • the suction hole be slot-shaped, oval-shaped, or dumbbell-shaped.
  • the suction holes may be arranged in the longitudinal direction of the suction pipe. Each of the suction holes may be oriented at an angle relative to the longitudinal direction of the suction pipe.
  • the sectioning plate be disposed close to the inner surface of the drum at edges thereof, partially or entirely.
  • a finishing member made of a flexible material may be provided to some or all of the edges of the sectioning plate, and the finishing member may be disposed close to the inner surface of the drum.
  • the sectioning plate be open on the underside thereof and at both side ends thereof.
  • the sectioning plate may have a reverse-V shape and may be installed to be placed on the suction pipe.
  • a plurality of baffles may be arranged so as to be spaced apart from each other, and may be provided onto opposing surfaces of the sectioning plate.
  • the apparatus for removing deposits and water in a water system further include a single underwater camera or a plurality of underwater cameras which are disposed on one side of the suction device, take photographs of operation states in which the deposits and water are collected, and send the photographs to the outside of the water system.
  • an apparatus for removing deposits and water in a water system including a drum, which is rotatable and which is partially or entirely formed of a straining sieve, so that deposits deposited on a bed of a water system and water can be introduced into the drum, a suction device including a suction pipe passing through the center of the drum and serving as a rotational shaft, in which one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum and the suction device is connected to a transfer pipe which transfers the deposits and water to the outside of the water system, and a sectioning plate, sectioning a space inside the drum into a first space relatively close to the suction holes (or the suction hole) and a second space relatively far from the suction holes (or the suction hole) in order to limit the flow of the deposits and the water in a manner such that the deposits and the water can be introduced into the drum through the straining sieve nearer the suction holes, in which the section
  • an apparatus for removing deposits and water in a water system including a drum which is rotatable and which is partially or entirely formed of a straining sieve, so that water and deposits on a bed of a water system can be introduced into the drum, a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft, in which one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum, and the suction device is connected to a transfer pipe, which transfers the deposits and water outside the water system, and a sectioning plate, sectioning a space inside the drum into a first space relatively near the suction holes (or the suction hole) and a second space relatively far from the suction holes (or the suction hole) in order to limit flow of the deposits and the water in a manner such that the deposits and the water can be introduced into the drum through the straining sieve nearer the suction holes, in which each of the suction holes has a
  • the apparatus for removing deposits and water from a water system is advantageous in that it can collect the deposits while it is freely moved and it can prevent secondary pollution, in which the deposits spread and diffuse into water during the operation of removing the deposits, from occurring because it employs a drum rolling and moving on the bed of a water system and having a straining sieve at a portion thereof.
  • the apparatus has a suction device serving as a rotational shaft of the drum and playing a role of inhaling the deposits into the drum and transferring the deposits to the outside of the water system.
  • the apparatus includes a sectioning plate restricting the flow of the water and the deposits so as for the water and the deposits to be introduced into a suction hole of the suction device disposed in the drum.
  • the sectioning plate is structured so as to divide a space inside the drum into a first space disposed relatively near the suction hole and a second space disposed relatively far from the suction hole, it is possible to prevent holes of the straining sieve of the drum from clogging because foreign matter (plastic bags or the like) first attached to the straining sieve of the drum can be voluntarily separated from the straining sieve because the suction force is applied to the foreign matter as the drum rolls.
  • FIG. 1 is a perspective view illustrating an apparatus for removing deposits and water in a water system according to a first embodiment of the invention
  • FIG. 2 is a side view illustrating the apparatus for removing deposits and water in a water system according to the first embodiment of the invention
  • FIG. 3 is an enlarged view illustrating a drum and peripheral elements in association with the drum shown in FIG. 2;
  • FIG. 4 through FIG. ⁇ are longitudinal sectional views illustrating part Q shown in FIG. 1;
  • FIG. 7 is a perspective view illustrating a sectioning plate shown in FIGs. 1 to 3;
  • FIG. 8 is a perspective view illustrating an apparatus for removing deposits and water in a water system according to a second embodiment
  • FIG. 9 is an enlarged sectional view illustrating a drum and peripheral elements in association with the drum shown in FIG. 8;
  • FIG. 10 is a front view illustrating an apparatus for removing deposits and water in a water system according to a third embodiment;
  • FIG. 11 is a front view illustrating an apparatus for removing deposits and water in a water system according to a fourth embodiment.
  • FIG. 12 is a front view illustrating an apparatus for removing deposits and water in a water system according to a fifth embodiment.
  • the apparatus for removing deposits and water in a water system includes a drum 10 (a rotating porous body) which can rotate and is capable of moving and which is structured in a manner such that the deposits and water can be introduced thereinto but foreign matter (solid wastes) cannot be introduced thereinto, a suction device 20 inhaling both the deposits and water into the drum 10 and delivering the deposits and water to the outside of the drum 10 in a slurry state, a sectioning plate 30 controlling the flow of the deposits and the water so to introduce the slurry of the deposits and the water into the suction device 20 in a slurry state, an underwater camera 50, a buoy 60, and a coupling ring 70.
  • a drum 10 a rotating porous body
  • a suction device 20 inhaling both the deposits and water into the drum 10 and delivering the deposits and water to the outside of the drum 10 in a slurry state
  • a sectioning plate 30 controlling the flow of the deposits and the water so to introduce the slurry of the deposits and the water into the
  • the deposits existing under the drum 10 (i.e. existing between the drum and the bed of water) or in the drum 10 are inhaled and drawn outside the water system through a delivery- pipe 222 by a suction force generated by suction facilities 221 disposed outside the water system, for example, disposed on a ship 200.
  • the deposits drawn out of the water system undergo a solid-liquid separation process in a separation device 223.
  • the apparatus for removing deposits and water in a water system is hauled by hauling means and a hauling rope 212.
  • the drum 10 rolls on the bed of the water system in the direction in which the apparatus is hauled because the drum 10 can rotate.
  • the drum 10 is continuously moved by the hauling means, the deposits under the drum 10 and in the drum 10 are continuously delivered and removed to the outside of the water system by the suction force generated by the suction facilities 221. Accordingly, it is possible to effectively collect the deposits in the water system.
  • the drum 10 moves rolling on the bed in the water system by hauling force from hauling means so that part or all of the drum 10 is made of a material having a specific gravity greater than that of water.
  • the drum 10 includes a cylinder portion 11 which is brought into direct contact with the bed of the water system and two disk portions 12 provided to both sides of the cylinder portion 11. Each of the disk portions 12 has a mounting hole in the center thereof.
  • the drum 10 is formed partially or entirely of a straining sieve, so that the deposits in the water system can be introduced into the drum 10.
  • a plurality of cylinder backings 13 is provided to the outer surface of the cylinder portion 11 and backing rings 14 are provided to both side end portions of the cylinder portion 11.
  • the cylinder backings 13 are installed so as to be oriented parallel to the longitudinal direction of the cylinder portion 11 (i.e. the axial direction, which is the center of the rotational motion of the cylinder) .
  • Each of the cylinder backings 13 is in contact with the backing rings 14 at both ends thereof, has a rectangular plate shape, and is sufficiently thick.
  • the cylinder backings 13 are arranged along the circumference of the cylinder 11 at regular intervals.
  • the cylinder backings 13 are installed so as to protrude from the outer surface of the cylinder portion 11.
  • Each of the cylinder backings 13 is installed in a manner such that the wider surface of the cylinder backing is perpendicular to the outer surface of the cylinder.
  • the cylinder backings 13 and the backing rings 14 reinforce the structural strength of the cylinder 11 and prevent the drum 10 from slipping on the bed of the water system when the drum 10 rolls on the bed of the water system.
  • each of the disk portions 12 On the outer surface of each of the disk portions 12 is provided a plurality of disk backings 15. First ends of the disk backings 15 are in contact with one of the backing rings 14, and the disk backings 15 are radially arranged. Each of the disk backings 15 is a rectangular plate which is sufficiently thick. Each of the disk backings 15 is installed in a manner such that the wider surface of the disk backing 15 is perpendicular to the outer surface of the disk portion, like the cylinder backings 13.
  • the suction device 20 includes a suction pipe 21 which inhales the deposits and water introduced into the drum 10 in the form of slurry, a delivery pipe 23, which is the last end of the suction device 20 and which serves as coupling means for coupling the suction pipe 20 to a transfer pipe 222, which transfers the slurry of the deposits and the water to the outside of the water system, and a connection pipe 22, which serves as a connector between the delivery pipe 23 and the suction pipe 21.
  • the suction pipe 21 is formed in a straight line shape.
  • the connection pipe 22 includes a pair of pipes arranged in a branching arrangement in which first ends of the pipes are connected to each other to form a coupling point and second ends of the pipes are separated.
  • the second ends, separated from each other, are connected to respective ends of the suction pipe 21.
  • a triangle is formed. That is, the suction pipe 21 and the connection pipe 22 are arranged so as form a triangular pipe structure.
  • the suction pipe 21 is disposed so as to pass through the center of the drum 10 and mounting holes of the disk portions 12 so that the suction pipe 21 serves as a rotational shaft of the drum 10.
  • Bearings B are provided between end portions of the suction pipe 21 and the mounting holes.
  • the suction pipe 21 is described as having almost a straight line form, but the suction pipe 21 need not have a straight line form. It is enough that both end portions of the suction pipe 21, to which the bearings B are fixed, have a straight line form, so that the drum can 10 rotate.
  • a suction hole 21i extends roughly parallel to the longitudinal direction of the suction pipe 21.
  • the suction hole 2Ii has a slot shape.
  • the suction hole 21i is disposed so as to be at an angle relative to the longitudinal direction of the suction pipe 21.
  • the suction hole 21i may have a dumbbell shape. That is, both end portions of the suction hole 2Oi have a larger suction area then the middle portion thereof. Thereby, turbulence is formed around the suction hole 21i when the deposits and water are introduced into the suction pipe 21, so that the deposits and water can be effectively inhaled.
  • the suction hole 2Ii may have an oval shape in which the middle portion bulges, in a manner opposite that of the dumbbell shape.
  • the dumbbell shape and the oval shape operate in the same manner.
  • the delivery pipe 21 is connected to the coupling point of the connection pipe 22, in which the two pipes are connected, so as to be at an angle relative to each other.
  • the coupling point of the connection pipe 22 is provided with a connection ring 70 to which a hauling rope 212 is connected in order to haul the drum 10 so that the drum 10 is moved in a direction from the suction pipe 21 to the delivery pipe 23. That is, the delivery pipe 23 is disposed at the forward side in the moving direction of the drum 10.
  • a buoy 60 is also connected to the connection ring 70 via a connection wire 61 in order to float the delivery pipe 23 so as to separate it from the bed of water.
  • the buoy 60 prevents the delivery pipe 23 from coming into contact with the bed of water so that the delivery pipe 23 does not hinder the drum 10 from moving when the drum 10 rolls and moves by being hauled.
  • the buoy 60 can be formed of a foam member, such as Styrofoam, or a porous member. It is preferable for the buoy 60 to have a streamlined structure in order to minimize the resistance of water.
  • the suction device 20 is a triangular pipe structure (the suction pipe and the connection pipe) .
  • the suction device 20 may alternatively be a pentagonal pipe structure.
  • the suction device 20 may be a ring-like pipe structure, as an alternative to the triangular pipe or the pentagonal pipe.
  • the delivery pipe 23 In the ring-like pipe structure, at least one pipe is the suction pipe 21, and the delivery pipe 23 must be disposed at a spot facing the suction pipe 21 (the spot corresponding to a vertex of a triangular structure, which is disposed on the opposite side of the suction pipe 21) .
  • the sectioning plate 30 prevents the deposits, floating up from the bed of the water system due to the suction force of the suction facilities along with water when the deposits are inhaled through the suction hole 2Ii of the suction device 20, from diffusing into water instead of being inhaled into the drum 10.
  • the sectioning plate 30 is installed near the suction hole 21i and has a structure such that it is open at side end portions and an underside portion thereof.
  • the sectioning plate 30 divides the space inside the drum 10 into a first space relatively near the suction hole 2Ii and a second space relatively far from the suction hole 21i.
  • the sectioning plate 30 is composed of a front plate 31f and a back plate 31r, upper ends of which are connected to each other.
  • a cross-section of the sectioning plate 30 is a V (or U) shape.
  • Lower ends of the front plate 31f and the back plate 31r are separated from each other, and the distance between the front plate 31f and the back plate 31r becomes larger as it becomes nearer the lower ends of the plates 31f and 31r. That is, the sectioning plate 30 is installed in a manner such that it partially surrounds the suction plate 21.
  • the flow of the sectioning plate 30, which is caused by suction force generated by the suction facilities 221 and transferred to the suction hole by way of the transfer pipe, the delivery pipe, the connection pipe, and the suction pipe, is restricted to the space defined by the sectioning plate 30 and the bed of the water system (which is in contact with the drum) . Thanks to the turbulence of water generated in this space (the turbulence is generated due to the shape of the suction hole) , the deposits settled in the drum 10 come up, are then inhaled into the suction hole 2Ii along with water, and are then discharged outside the water system.
  • the space between the sectioning plate 30 and the bed of the water system is emptied by suction of the deposits and the water and the deposits and the water outside the drum 10 are introduced into the empty space again through the straining sieve of the cylinder potion 11 and the disk portions 12 of the drum 10. This procedure is repeated many times.
  • the sectioning plate 30 has a plurality of baffles 32 on opposing surfaces of the front plate 31f and the back plate 31f in order to maximize the turbulence in the space provided between the sectioning plate 10 and the underside of the drum 10.
  • the baffles 32 are arranged at regular intervals . Some or all of the edges of the front plate 31f and the back plate 31r of the sectioning plate 30 are disposed close to the inner surface of the drum 10 (i.e. the inner surface of the cylinder portion and the inner surfaces of the disk portions) in order to prevent the deposits from diffusing into water in the water system by passing through gaps between the edges of the sectioning plate 30 and the inner surface of the drum 10.
  • part or all of the sectioning plate 30 be provided with a finishing member 33 made of a flexible material such as rubber or flexible plastic so as for the finishing member to be close to the inner surface of the drum 10 in order to prevent foreign matter from becoming stuck between the edge of the sectioning plate 30 and the inner surface of the drum 10 and thereby hindering rotational motion of the drum 10.
  • a finishing member 33 made of a flexible material such as rubber or flexible plastic so as for the finishing member to be close to the inner surface of the drum 10 in order to prevent foreign matter from becoming stuck between the edge of the sectioning plate 30 and the inner surface of the drum 10 and thereby hindering rotational motion of the drum 10.
  • the above-explained sectioning plate 30 prevents the pressure in the upper space (relatively far from the suction hole) disposed at the upper side of the sectioning plate 30 in the drum 10 from being reduced and thereby makes it easy to separate solid waste (such as a plastic bag) which is stuck to the surface of the straining-sieve of the drum 10 at a position relatively near the suction hole 21i by the suction operation from the drum 10 when the solid waste is moved to a portion of the drum 10 that is relatively far from the suction hole 21i as the drum 10 rotates.
  • solid waste such as a plastic bag
  • the underwater camera 50 takes photographs of the operation states of the suction device while the suction device collects the deposits and water in the water system and transmits the photographs to the outside of the water system, so that the operation state can be observed outside the water system.
  • the underwater camera 50 is installed near the connection ring 70, but it may be installed at other positions.
  • the underwater camera 50 may be composed of two cameras in order to monitor the operational states of the front side and the back side of the suction device.
  • the number of underwater cameras 50 may be larger or smaller than two.
  • the hauling means may be a watercraft, such a ship 200, or may be a winch 211 installed in the watercraft.
  • the hauling means can be installed on land, so that the roller can be hauled from land.
  • the drum 10 can be hauled using a bar having high strength instead of a hauling rope 212. In this case, the drum 10 can be moved backward, which is the direction opposite the hauling direction of the drum 10, as well as forward, by pushing the drum 10 backward.
  • the suction facilities 221 may be a known slurry pump or a vacuum tank.
  • the transfer pipe 222 may be made of a flexible material.
  • the separation device 223 is supplied with the slurry of the deposits and the water via the transfer pipe 222 and separates the deposits from the water by at least one of a cyclone method, a settling method, and a filtering method.
  • the separation device 223 may further include an aeration apparatus which injects dissolved oxygen to the slurry of the deposits and the water or a biological processing apparatus, thereby being capable of imparting vital force to the water and returning the purified water to the water system.
  • Reference character F which is not described, denotes a fastener which securely couples the sectioning plate 30 to the suction pipe 21.
  • the apparatus for removing deposits and water from a water system collects the deposits and the water in the water system in a manner such that the drum 10 collects the deposits and the water while rolling on the bed of the water system. At this time, the collection of the deposits and the water is accomplished by the suction force generated by the suction facilities 221.
  • the water introduced into the space between the sectioning plate 30 and the underside of the drum is inhaled through the suction hole 2Ii by causing turbulence which is caused due to the baffles 32, the tilting of the suction hole 21i, and the bulging of both end portions (or the middle portion) of the suction hole 21i.
  • the deposits existing under the sectioning plate 30 in the drum come up. At this time, the deposits, which are rising up, are inhaled through the suction hole 21i instead of escaping from the drum 10, and becomes slurry.
  • the slurry passes through the suction pipe 21, the connection pipe 22, the delivery pipe 23, and the transfer pipe 222 and then finally gathers at the separation device 223.
  • the slurry in the separation device 223 is separated into sediment and water and the water is purified and returned to the water system.
  • the drum 10 is hauled in the advancing direction of the ship 200 and a track along which the deposits are removed is formed along the path over which the drum passed through the above-mentioned procedure.
  • the state of collecting the deposits in the water system is monitored using the underwater camera 50. While monitoring the state of collecting the deposits, if it is determined that the removal of the deposits on the track where the drum 10 passed once is unsatisfactory, the ship 200 turns back to the initial position and advances forward once again, so that the drum 10 goes along the track once again. Alternatively, the ship may advance backward to return to the initial position instead of turning back, and shuttle between the initial position and a target position.
  • FIGs. 8 and 9 An apparatus for removing deposits and water in a water system according to a second embodiment of the invention is shown in FIGs. 8 and 9.
  • the apparatus for removing deposits and water in a water system according to the second embodiment is almost the same as the apparatus according to the first embodiment with respect to the structure and operation thereof, except for the structure of cylinder backings 13A and a sectioning plate 3OA.
  • the apparatus for removing deposits and water in a water system according to the second embodiment also includes a drum 10, a suction device 20, the sectioning plate 3OA, an underwater camera 50, a buoy 60, and a connection ring 70, like the apparatus for removing deposits and water in a water system according to the first embodiment.
  • the cylinder backings 13A are disposed so as to be parallel to the longitudinal direction (i.e. axial direction) of a cylinder portion 11 of the drum 10, and are rectangular plates both ends of which are in contact with backing rings 14.
  • the cylinder backings 13A are sufficiently thick and are arranged along the circumference of the cylinder portion 11 at regular intervals.
  • the cylinder backings 13A are installed so as to protrude from the outer surface of the cylinder portion 11, and the narrower surface of each of the cylinder backings 11 is in contact with the outer surface of the cylinder portion 11.
  • a protruding end of each of the cylinder backings 13A is provided with a plurality of protrusions 16 arranged in the longitudinal direction of the protruding end. Accordingly, the protruding end looks saw-toothed as a whole.
  • Each of the cylinder backings 13A is arranged to be oriented relative to the direction of the rotational center by a predetermined angle b so that the forward end thereof is at an angle relative to the rotating direction of the drum when the drum rotates.
  • the cylinder backings 13A reinforce the structural strength of the cylinder portion 11 along the backing rings 14 and prevent the drum 10 from slipping on the bed of the water system. Further, it creates a pressure difference inside and outside the drum 10 when the water is introduced through the suction hole 21i, thereby making the drum 10 rotate by itself. Still further, the cylinder backings 13A help the suction device 20 effectively inhale the deposits by scraping the bed of the water system using the protrusions 16 when the drum 10 rotates.
  • the sectioning plate 3OA is open at the upper side thereof and at both side ends thereof.
  • the sectioning plate 3OA in the second embodiment is different from the sectioning plate 30 in the first embodiment in that the sectioning plate 3OA has a straight-line shape instead of the reverse-V shape, as in the first embodiment, and a middle portion of the sectioning plate 3OA may cover an upper portion of the suction pipe 21.
  • each of the disk portions 12 can be a flat plate which does not have a straining sieve portion. In this case, the disk portions 12 may not be provided with backings 15.
  • the suction device according to the second embodiment may be driven by hauling means and suction facilities 221 disposed outside the water system, as in the first embodiment.
  • FIG. 10 shows an apparatus for removing deposits and water in a water system according to a third embodiment.
  • the apparatus for removing deposits and water in a water system according to the third embodiment is almost the same as the apparatus according to the second embodiment with respect to the structure and operation thereof, except for the structures of a cylinder portion HB of a drum 10 and a suction device 2OB.
  • the middle portion of the cylinder portion HB of the drum 10 bulges outward, and the suction device 2OB is an L-shaped pipe.
  • Part (i.e. lateral part) of the suction device 2OB serves as a suction pipe 2IB.
  • An end of another part (i.e. vertical part) of the suction device 2OB is connected to a delivery pipe 23B connected to a transfer pipe 222.
  • Disk portions of the drum 10 may be flat plates which are provided with a straining sieve. In such a case, disk backings may not be provided to the disk portions. Alternatively, bearings may replace the disk portions.
  • the collecting the deposits and water when collecting deposits and water in a water system, can be accomplished by hauling force of hauling means, as in the second embodiment.
  • the collecting the deposits and water can be accomplished by pulling or pushing backward and forward the drum 10 or pulling or pushing the drum 10 leftward and rightward using a bar having high strength instead of a rope.
  • the apparatus according to the third embodiment may be structured based on the first embodiment, instead of being structured based on the second embodiment.
  • FIG. 11 is a front view illustrating an apparatus for removing deposits and water in a water system according to a fourth embodiment.
  • the apparatus according to the fourth embodiment is almost the same as the apparatus according to the third embodiment with respect to the structure and operation thereof, except for a suction device 2OC which has a straight-line pipe structure instead of the L-shaped pipe structure.
  • part of the suction device 2OC comprises a suction pipe 21C, and a delivery pipe 23C is connected to an end of the suction device 2OC, which is on the opposite side of the suction pipe 21C, the delivery pipe being connected to a transfer pipe 222.
  • the deposits and water can be removed by hauling the drum using the hauling force of a hauling means, or alternatively, by using a bar having high strength instead of a hauling rope.
  • the suction pipe may comprise two pipes symmetrically arranged to the left and right of the delivery pipe 23C.
  • FIG. 12 is a side view illustrating an apparatus for removing deposits and water in a water system according to a fifth embodiment
  • the apparatus for removing deposits and water in a water system includes a drum 1OD and a suction device 2OD.
  • the structure of the drum 1OD is the same as the structure of the drum 10 in the first embodiment. Accordingly, a detailed description of the drum 1OD will be omitted.
  • the suction device 2OD includes a suction pipe 21D passing through the center of the drum 1OD and serving as a rotational shaft.
  • One or a plurality of suction holes 21i' is formed in the suction pipe 21D so as to be disposed in the drum 1OD.
  • the suction pipe 21D is connected to a transfer pipe 222 so that inhaled deposits and water can be transferred to the outside of the water system.
  • the suction device 2OD has a sectioning plate portion 25, acting like the sectioning plate 30 in the first embodiment, and the sectioning plate portion 25 and the suction device 2OD are an integrated single body.
  • the sectioning plate portion 25 divides a space inside the drum 1OD into a first space disposed relatively near suction holes 21i' and a second space disposed relatively far from the suction holes 21i, ' and restricts the flow of the water and the deposits so as to introduce the water and the deposits through a straining sieve near the suction holes 2Ii 1 .

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Abstract

Disclosed is an apparatus for removing deposits and water in a water system which includes a rotatable drum partially or entirely formed of a straining sieve so as for deposits and water in a lower position of a water system to be introduced into the drum, a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft, wherein one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum and the suction device is structured so as to be connected to a transfer pipe which transfers the deposits and water which are inhaled into the suction pipe to the outside of the water system, and a sectioning plate restricting the flow of the deposits and water so as for the deposits and the water to be introduced into the drum through the straining sieve disposed near the suction hole.

Description

[DESCRIPTION]
[invention Title]
APPARATUS FOR REMOVING DEPOSIT AND WATER
[Technical Field]
The present invention relates to an apparatus for removing deposits and water from the bed of a water system, which is capable of efficiently getting rid of water and deposits on the bottom of a water system, such as a sea, a river, a lake, and a pond.
[Background Art]
Generally, deposits deposited on the bed of a water system, such as a sea, a river, a brook, a lake, and a pond, contain pollutants, such as organic material and heavy metals. If the deposits on the bottom of a water system are left untreated for a long time and thus the amount thereof increases as time passes, the lower part of the deposits gradually decays due to insufficient oxygen and toxicity and thus the water system becomes an environment in which living things cannot survive, resulting in ecocide. As a result, the water system loses its natural purification ability. Accordingly, the deposits on the bed of the water system must be periodically removed by a proper removal method.
There are common methods of collecting the deposits on the bed of a water system. According to one method, the deposits are first drawn out of the water system by a grab bucket installed in a dredging craft and are then transferred to a location outside the water system. According to another method, a long pipe is first introduced into the water system in a manner such that the end of the pipe reaches the bed of the water system and then the deposits and water on the bottom of the water system are drawn out by pumping pressure.
However, the former method (using the dredging craft) has disadvantages in that the operation speed is very low, it is impossible to effectively get rid of the deposits on the bed of the water system because the deposits are apt to be suspended on the water during the deposit removal process, and there is the probability that water pollution will spread around the spot at which a deposit removal process is performed due to suspension of the deposits.
The latter method (using a suction device such as a pipe and a pump) also has disadvantages in that suction force is only applied in a very limited region, so that the deposit removal can be locally accomplished, the deposits diffuse into water around the operation spot, and troublesome work of frequently clearing a straining portion provided to the end of the pipe is required because holes in the straining portion are easily clogged by foreign matter (plastic bags and the like) and thus the suction force applied to the lower end of the pipe is decreased.
Further, the above two methods are similar in the point that the methods must be conducted in a state of being at a fixed location or are useful for the case when they are performed at a single location while being held immovable. That is, they are not suitable for migratory operations and thus they are not suitable for continuous work over a wide area.
[Disclosure]
[Technical Problem]
The present invention is made in view of the above mentioned problems and thus there is provided an apparatus for removing deposits and water in a water system, which has a good migratory characteristic by employing a drum which can rotate, has a straining portion on at least part thereof, has a design capable of discharging deposits and water inhaled by a suction device outside the drum, and has a sectioning plate restricting the flow and turbulence of the deposits and water so that the deposits and water flow near a suction hole of the suction device in order to prevent the suction hole from clogging when collecting the deposits and water and in order to prevent the deposits from spreading and diffusing into water around an operation spot during the removal of the deposits. [Technical Solution]
In order to accomplish the above-mentioned objects of the invention, there is provided an apparatus for removing deposits and water in a water system including a rotatable drum formed partially or entirely of a straining sieve, so as for deposits and water on the bed of a water system to be able to be introduced into the drum, a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft of the drum, in which one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum, and the suction device is connected to a transfer pipe which transfers the deposits and water, which are introduced into the drum, outside the drum, and a sectioning plate sectioning the space inside the drum into a first space relatively near the suction holes (or hole) and a second space relatively far from the suction holes (or hole) in order to limit the flow of the deposits and the water so that the deposits and the water are introduced into the drum through a portion of the straining sieve nearer the suction holes (or suction hole) . It is preferable that the drum be structured in a manner such that a cylinder portion thereof bulges in the middle portion in the longitudinal direction thereof.
It is preferable that either the cylinder portion or a disk portion be provided with a plurality of backings.
It is preferable that the backings protrude from the outer surface of the cylinder portion. The backings may extend in the axial direction of the cylinder portion. The protruding end of each of the backings may be saw-toothed. The backings protruding from the outer surface of the cylinder may be oriented at an angle relative to an imaginary line leading towards a rotation center.
It is preferable that the suction device be a ring- shaped pipe. Part of the ring-shaped pipe may serve as the suction pipe. A delivery pipe may be connected to a portion of the ring-shaped pipe, the portion being disposed on the opposite side of the suction pipe. The suction device may be an L-shaped or a straight-line-shaped pipe, and part of the L-shaped or the straight-line-shaped pipe may be the suction pipe. The delivery pipe may be connected to a portion of the L-shaped or the straight-line-shaped pipe, the portion being disposed on the opposite side of the suction pipe. The ring- shaped or the L-shaped suction pipe may be connected to a buoy at a portion connected to the delivery pipe, so that the connected portion of the ring-shaped or the L-shaped suction pipe floats and is thus spaced apart from the bed of the water system by a predetermined distance.
It is preferable that the suction hole be slot-shaped, oval-shaped, or dumbbell-shaped. The suction holes may be arranged in the longitudinal direction of the suction pipe. Each of the suction holes may be oriented at an angle relative to the longitudinal direction of the suction pipe.
It is preferable that the sectioning plate be disposed close to the inner surface of the drum at edges thereof, partially or entirely. A finishing member made of a flexible material may be provided to some or all of the edges of the sectioning plate, and the finishing member may be disposed close to the inner surface of the drum.
It is preferable that the sectioning plate be open on the underside thereof and at both side ends thereof. In greater detail, the sectioning plate may have a reverse-V shape and may be installed to be placed on the suction pipe. Further, a plurality of baffles may be arranged so as to be spaced apart from each other, and may be provided onto opposing surfaces of the sectioning plate.
It is preferable that the apparatus for removing deposits and water in a water system further include a single underwater camera or a plurality of underwater cameras which are disposed on one side of the suction device, take photographs of operation states in which the deposits and water are collected, and send the photographs to the outside of the water system.
In order to accomplish the above-objects, there is provided an apparatus for removing deposits and water in a water system including a drum, which is rotatable and which is partially or entirely formed of a straining sieve, so that deposits deposited on a bed of a water system and water can be introduced into the drum, a suction device including a suction pipe passing through the center of the drum and serving as a rotational shaft, in which one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum and the suction device is connected to a transfer pipe which transfers the deposits and water to the outside of the water system, and a sectioning plate, sectioning a space inside the drum into a first space relatively close to the suction holes (or the suction hole) and a second space relatively far from the suction holes (or the suction hole) in order to limit the flow of the deposits and the water in a manner such that the deposits and the water can be introduced into the drum through the straining sieve nearer the suction holes, in which the sectioning plate is integrated with the drum. In order to accomplish the above objects, there is provided an apparatus for removing deposits and water in a water system including a drum which is rotatable and which is partially or entirely formed of a straining sieve, so that water and deposits on a bed of a water system can be introduced into the drum, a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft, in which one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum, and the suction device is connected to a transfer pipe, which transfers the deposits and water outside the water system, and a sectioning plate, sectioning a space inside the drum into a first space relatively near the suction holes (or the suction hole) and a second space relatively far from the suction holes (or the suction hole) in order to limit flow of the deposits and the water in a manner such that the deposits and the water can be introduced into the drum through the straining sieve nearer the suction holes, in which each of the suction holes has a slot shape, an oval shape or a dumbbell shape, the suction holes are arranged in the longitudinal direction of the suction pipe, edges of the sectioning plate are provided with a finishing member made of a flexible material, and the finishing member is in contact with the inner surface of the drum. [Advantageous Effect]
The apparatus for removing deposits and water from a water system according to the invention is advantageous in that it can collect the deposits while it is freely moved and it can prevent secondary pollution, in which the deposits spread and diffuse into water during the operation of removing the deposits, from occurring because it employs a drum rolling and moving on the bed of a water system and having a straining sieve at a portion thereof. The apparatus has a suction device serving as a rotational shaft of the drum and playing a role of inhaling the deposits into the drum and transferring the deposits to the outside of the water system. The apparatus includes a sectioning plate restricting the flow of the water and the deposits so as for the water and the deposits to be introduced into a suction hole of the suction device disposed in the drum.
Since the sectioning plate is structured so as to divide a space inside the drum into a first space disposed relatively near the suction hole and a second space disposed relatively far from the suction hole, it is possible to prevent holes of the straining sieve of the drum from clogging because foreign matter (plastic bags or the like) first attached to the straining sieve of the drum can be voluntarily separated from the straining sieve because the suction force is applied to the foreign matter as the drum rolls. [Description of Drawings]
FIG. 1 is a perspective view illustrating an apparatus for removing deposits and water in a water system according to a first embodiment of the invention;
FIG. 2 is a side view illustrating the apparatus for removing deposits and water in a water system according to the first embodiment of the invention;
FIG. 3 is an enlarged view illustrating a drum and peripheral elements in association with the drum shown in FIG. 2;
FIG. 4 through FIG. β are longitudinal sectional views illustrating part Q shown in FIG. 1;
FIG. 7 is a perspective view illustrating a sectioning plate shown in FIGs. 1 to 3;
FIG. 8 is a perspective view illustrating an apparatus for removing deposits and water in a water system according to a second embodiment;
FIG. 9 is an enlarged sectional view illustrating a drum and peripheral elements in association with the drum shown in FIG. 8; FIG. 10 is a front view illustrating an apparatus for removing deposits and water in a water system according to a third embodiment;
FIG. 11 is a front view illustrating an apparatus for removing deposits and water in a water system according to a fourth embodiment; and
FIG. 12 is a front view illustrating an apparatus for removing deposits and water in a water system according to a fifth embodiment. <Brief Description of Key Elements in Drawings>
10, 1OD : Drum
11, HB : Cylinder portion 12: Disk portion
13, 13A : Disk backing 13a: Protrusion
20, 2OB, 2OC, 2OD: Suction hole
21, 21B, 21C, 21D: Suction pipe 21i, 21i': Suction hole
22 : Connection pipe
23, 23B, 23C : Delivery pipe
25: Sectioning plate block
30, 3OA: Sectioning plate
32: Baffle
33: Finishing member 50: Underwater camera 60 : Buoy [Best Model
Hereinafter, apparatuses for removing deposits and water in a water system according to embodiments of the invention will be described with reference to the accompanying drawings.
An apparatus for removing deposits and water in a water system according to a first embodiment is shown in FIGs. 1 to 7.
As shown in FIGs. 1 to 3, the apparatus for removing deposits and water in a water system according to the first embodiment includes a drum 10 (a rotating porous body) which can rotate and is capable of moving and which is structured in a manner such that the deposits and water can be introduced thereinto but foreign matter (solid wastes) cannot be introduced thereinto, a suction device 20 inhaling both the deposits and water into the drum 10 and delivering the deposits and water to the outside of the drum 10 in a slurry state, a sectioning plate 30 controlling the flow of the deposits and the water so to introduce the slurry of the deposits and the water into the suction device 20 in a slurry state, an underwater camera 50, a buoy 60, and a coupling ring 70. The deposits existing under the drum 10 (i.e. existing between the drum and the bed of water) or in the drum 10 are inhaled and drawn outside the water system through a delivery- pipe 222 by a suction force generated by suction facilities 221 disposed outside the water system, for example, disposed on a ship 200. The deposits drawn out of the water system undergo a solid-liquid separation process in a separation device 223.
The apparatus for removing deposits and water in a water system according to the first embodiment is hauled by hauling means and a hauling rope 212. When the apparatus is hauled, the drum 10 rolls on the bed of the water system in the direction in which the apparatus is hauled because the drum 10 can rotate. While the drum 10 is continuously moved by the hauling means, the deposits under the drum 10 and in the drum 10 are continuously delivered and removed to the outside of the water system by the suction force generated by the suction facilities 221. Accordingly, it is possible to effectively collect the deposits in the water system.
Technical aspects of the apparatus for removing deposits and water in a water system according to the first embodiment will be described below in greater detail.
The drum 10 moves rolling on the bed in the water system by hauling force from hauling means so that part or all of the drum 10 is made of a material having a specific gravity greater than that of water. The drum 10 includes a cylinder portion 11 which is brought into direct contact with the bed of the water system and two disk portions 12 provided to both sides of the cylinder portion 11. Each of the disk portions 12 has a mounting hole in the center thereof. The drum 10 is formed partially or entirely of a straining sieve, so that the deposits in the water system can be introduced into the drum 10.
A plurality of cylinder backings 13 is provided to the outer surface of the cylinder portion 11 and backing rings 14 are provided to both side end portions of the cylinder portion 11.
The cylinder backings 13 are installed so as to be oriented parallel to the longitudinal direction of the cylinder portion 11 (i.e. the axial direction, which is the center of the rotational motion of the cylinder) . Each of the cylinder backings 13 is in contact with the backing rings 14 at both ends thereof, has a rectangular plate shape, and is sufficiently thick. The cylinder backings 13 are arranged along the circumference of the cylinder 11 at regular intervals. The cylinder backings 13 are installed so as to protrude from the outer surface of the cylinder portion 11. Each of the cylinder backings 13 is installed in a manner such that the wider surface of the cylinder backing is perpendicular to the outer surface of the cylinder. The cylinder backings 13 and the backing rings 14 reinforce the structural strength of the cylinder 11 and prevent the drum 10 from slipping on the bed of the water system when the drum 10 rolls on the bed of the water system.
On the outer surface of each of the disk portions 12 is provided a plurality of disk backings 15. First ends of the disk backings 15 are in contact with one of the backing rings 14, and the disk backings 15 are radially arranged. Each of the disk backings 15 is a rectangular plate which is sufficiently thick. Each of the disk backings 15 is installed in a manner such that the wider surface of the disk backing 15 is perpendicular to the outer surface of the disk portion, like the cylinder backings 13.
The suction device 20 includes a suction pipe 21 which inhales the deposits and water introduced into the drum 10 in the form of slurry, a delivery pipe 23, which is the last end of the suction device 20 and which serves as coupling means for coupling the suction pipe 20 to a transfer pipe 222, which transfers the slurry of the deposits and the water to the outside of the water system, and a connection pipe 22, which serves as a connector between the delivery pipe 23 and the suction pipe 21. The suction pipe 21 is formed in a straight line shape. The connection pipe 22 includes a pair of pipes arranged in a branching arrangement in which first ends of the pipes are connected to each other to form a coupling point and second ends of the pipes are separated. The second ends, separated from each other, are connected to respective ends of the suction pipe 21. When drawing a line that connects both ends of the suction pipe 21 and the coupling point of the pipes of the connection pipe 22, a triangle is formed. That is, the suction pipe 21 and the connection pipe 22 are arranged so as form a triangular pipe structure.
The suction pipe 21 is disposed so as to pass through the center of the drum 10 and mounting holes of the disk portions 12 so that the suction pipe 21 serves as a rotational shaft of the drum 10. Bearings B are provided between end portions of the suction pipe 21 and the mounting holes. In the above description, the suction pipe 21 is described as having almost a straight line form, but the suction pipe 21 need not have a straight line form. It is enough that both end portions of the suction pipe 21, to which the bearings B are fixed, have a straight line form, so that the drum can 10 rotate.
A suction hole 21i extends roughly parallel to the longitudinal direction of the suction pipe 21. As shown in FIG. 4, the suction hole 2Ii has a slot shape. The suction hole 21i is disposed so as to be at an angle relative to the longitudinal direction of the suction pipe 21. The suction hole 21i, as shown in FIG. 5, may have a dumbbell shape. That is, both end portions of the suction hole 2Oi have a larger suction area then the middle portion thereof. Thereby, turbulence is formed around the suction hole 21i when the deposits and water are introduced into the suction pipe 21, so that the deposits and water can be effectively inhaled.
As shown in FIG. 6, the suction hole 2Ii may have an oval shape in which the middle portion bulges, in a manner opposite that of the dumbbell shape. However, the dumbbell shape and the oval shape operate in the same manner.
The delivery pipe 21 is connected to the coupling point of the connection pipe 22, in which the two pipes are connected, so as to be at an angle relative to each other. The coupling point of the connection pipe 22 is provided with a connection ring 70 to which a hauling rope 212 is connected in order to haul the drum 10 so that the drum 10 is moved in a direction from the suction pipe 21 to the delivery pipe 23. That is, the delivery pipe 23 is disposed at the forward side in the moving direction of the drum 10. A buoy 60 is also connected to the connection ring 70 via a connection wire 61 in order to float the delivery pipe 23 so as to separate it from the bed of water.
The buoy 60 prevents the delivery pipe 23 from coming into contact with the bed of water so that the delivery pipe 23 does not hinder the drum 10 from moving when the drum 10 rolls and moves by being hauled. The buoy 60 can be formed of a foam member, such as Styrofoam, or a porous member. It is preferable for the buoy 60 to have a streamlined structure in order to minimize the resistance of water.
As described above, the suction device 20 is a triangular pipe structure (the suction pipe and the connection pipe) . The suction device 20 may alternatively be a pentagonal pipe structure. The suction device 20 may be a ring-like pipe structure, as an alternative to the triangular pipe or the pentagonal pipe. In the ring-like pipe structure, at least one pipe is the suction pipe 21, and the delivery pipe 23 must be disposed at a spot facing the suction pipe 21 (the spot corresponding to a vertex of a triangular structure, which is disposed on the opposite side of the suction pipe 21) .
As shown in FIG. 7, the sectioning plate 30 prevents the deposits, floating up from the bed of the water system due to the suction force of the suction facilities along with water when the deposits are inhaled through the suction hole 2Ii of the suction device 20, from diffusing into water instead of being inhaled into the drum 10. The sectioning plate 30 is installed near the suction hole 21i and has a structure such that it is open at side end portions and an underside portion thereof. The sectioning plate 30 divides the space inside the drum 10 into a first space relatively near the suction hole 2Ii and a second space relatively far from the suction hole 21i.
In greater detail, the sectioning plate 30 is composed of a front plate 31f and a back plate 31r, upper ends of which are connected to each other. A cross-section of the sectioning plate 30 is a V (or U) shape. Lower ends of the front plate 31f and the back plate 31r are separated from each other, and the distance between the front plate 31f and the back plate 31r becomes larger as it becomes nearer the lower ends of the plates 31f and 31r. That is, the sectioning plate 30 is installed in a manner such that it partially surrounds the suction plate 21.
Due to this structure, the flow of the sectioning plate 30, which is caused by suction force generated by the suction facilities 221 and transferred to the suction hole by way of the transfer pipe, the delivery pipe, the connection pipe, and the suction pipe, is restricted to the space defined by the sectioning plate 30 and the bed of the water system (which is in contact with the drum) . Thanks to the turbulence of water generated in this space (the turbulence is generated due to the shape of the suction hole) , the deposits settled in the drum 10 come up, are then inhaled into the suction hole 2Ii along with water, and are then discharged outside the water system. The space between the sectioning plate 30 and the bed of the water system is emptied by suction of the deposits and the water and the deposits and the water outside the drum 10 are introduced into the empty space again through the straining sieve of the cylinder potion 11 and the disk portions 12 of the drum 10. This procedure is repeated many times.
As described above, the sectioning plate 30 has a plurality of baffles 32 on opposing surfaces of the front plate 31f and the back plate 31f in order to maximize the turbulence in the space provided between the sectioning plate 10 and the underside of the drum 10. The baffles 32 are arranged at regular intervals . Some or all of the edges of the front plate 31f and the back plate 31r of the sectioning plate 30 are disposed close to the inner surface of the drum 10 (i.e. the inner surface of the cylinder portion and the inner surfaces of the disk portions) in order to prevent the deposits from diffusing into water in the water system by passing through gaps between the edges of the sectioning plate 30 and the inner surface of the drum 10. Further, it is preferable that part or all of the sectioning plate 30 be provided with a finishing member 33 made of a flexible material such as rubber or flexible plastic so as for the finishing member to be close to the inner surface of the drum 10 in order to prevent foreign matter from becoming stuck between the edge of the sectioning plate 30 and the inner surface of the drum 10 and thereby hindering rotational motion of the drum 10.
The above-explained sectioning plate 30 prevents the pressure in the upper space (relatively far from the suction hole) disposed at the upper side of the sectioning plate 30 in the drum 10 from being reduced and thereby makes it easy to separate solid waste (such as a plastic bag) which is stuck to the surface of the straining-sieve of the drum 10 at a position relatively near the suction hole 21i by the suction operation from the drum 10 when the solid waste is moved to a portion of the drum 10 that is relatively far from the suction hole 21i as the drum 10 rotates.
The underwater camera 50 takes photographs of the operation states of the suction device while the suction device collects the deposits and water in the water system and transmits the photographs to the outside of the water system, so that the operation state can be observed outside the water system. In the figures, it appears that the underwater camera 50 is installed near the connection ring 70, but it may be installed at other positions. Further, the underwater camera 50 may be composed of two cameras in order to monitor the operational states of the front side and the back side of the suction device. The number of underwater cameras 50 may be larger or smaller than two.
The hauling means may be a watercraft, such a ship 200, or may be a winch 211 installed in the watercraft. In the case that the hauling means is a winch 211, the hauling means can be installed on land, so that the roller can be hauled from land. In the case that the water system is shallow, the drum 10 can be hauled using a bar having high strength instead of a hauling rope 212. In this case, the drum 10 can be moved backward, which is the direction opposite the hauling direction of the drum 10, as well as forward, by pushing the drum 10 backward.
The suction facilities 221 may be a known slurry pump or a vacuum tank. The transfer pipe 222 may be made of a flexible material. The separation device 223 is supplied with the slurry of the deposits and the water via the transfer pipe 222 and separates the deposits from the water by at least one of a cyclone method, a settling method, and a filtering method. The separation device 223 may further include an aeration apparatus which injects dissolved oxygen to the slurry of the deposits and the water or a biological processing apparatus, thereby being capable of imparting vital force to the water and returning the purified water to the water system.
Reference character F, which is not described, denotes a fastener which securely couples the sectioning plate 30 to the suction pipe 21.
A process of collecting the deposits using the apparatus according to the first embodiment will be described below.
The apparatus for removing deposits and water from a water system according to the first embodiment collects the deposits and the water in the water system in a manner such that the drum 10 collects the deposits and the water while rolling on the bed of the water system. At this time, the collection of the deposits and the water is accomplished by the suction force generated by the suction facilities 221.
If the suction facilities 221 are started, water is first introduced into the drum 10 through the straining sieve of the drum 10. At this time, foreign matter cannot be introduced into the drum. That is, even if the foreign matter is attached to the drum 10 by the suction force from the suction facilities 20, the foreign matter can be separated from the drum 10 when the foreign matter is positioned at a spot that the suction force does not reach as the drum 10 rotates.
The water introduced into the space between the sectioning plate 30 and the underside of the drum is inhaled through the suction hole 2Ii by causing turbulence which is caused due to the baffles 32, the tilting of the suction hole 21i, and the bulging of both end portions (or the middle portion) of the suction hole 21i.
Thanks to the acting force of the water which causes the turbulence, the deposits existing under the sectioning plate 30 in the drum come up. At this time, the deposits, which are rising up, are inhaled through the suction hole 21i instead of escaping from the drum 10, and becomes slurry.
After that, the slurry passes through the suction pipe 21, the connection pipe 22, the delivery pipe 23, and the transfer pipe 222 and then finally gathers at the separation device 223. The slurry in the separation device 223 is separated into sediment and water and the water is purified and returned to the water system.
In the case that the hauling means is the ship 200 and the hauling rope 212 is used, the drum 10 is hauled in the advancing direction of the ship 200 and a track along which the deposits are removed is formed along the path over which the drum passed through the above-mentioned procedure. At this time, the state of collecting the deposits in the water system is monitored using the underwater camera 50. While monitoring the state of collecting the deposits, if it is determined that the removal of the deposits on the track where the drum 10 passed once is unsatisfactory, the ship 200 turns back to the initial position and advances forward once again, so that the drum 10 goes along the track once again. Alternatively, the ship may advance backward to return to the initial position instead of turning back, and shuttle between the initial position and a target position. This can be applied to the case in which the winch 211 installed in the ship 200 is used as the hauling means. However, the above- mentioned method cannot be applied to the case in which the winch 211 is installed on land. In the case in which the winch 211 is installed on land, the drum 10 is transported back to the initial position while being loaded on the ship 200 and is introduced in to the water system at the initial position of the track. After that, the drum 10 is hauled so as to move along the track once more. Alternatively, one additional winch is installed at a position opposite the winch on the land so that the drum 10 is hauled by two winches (one is at one position on land and the other one is at an opposite position) in turns. In the case in which a bar having high strength is used instead of the hauling rope 212 because the water system is shallow, if the removal of the deposits is unsatisfactory at the track along which the drum 10 went once and thus it is required for the drum 10 to move along the track once more, in the state in which the ship 200 is stopped at one position or moves slowly, the drum 10 is pushed in a direction opposite the hauling direction of the drum 10, and is then hauled so as for the drum 10 to move along the track once more.
An apparatus for removing deposits and water in a water system according to a second embodiment of the invention is shown in FIGs. 8 and 9.
As shown in FIGs. 8 and 9, the apparatus for removing deposits and water in a water system according to the second embodiment is almost the same as the apparatus according to the first embodiment with respect to the structure and operation thereof, except for the structure of cylinder backings 13A and a sectioning plate 3OA.
The apparatus for removing deposits and water in a water system according to the second embodiment also includes a drum 10, a suction device 20, the sectioning plate 3OA, an underwater camera 50, a buoy 60, and a connection ring 70, like the apparatus for removing deposits and water in a water system according to the first embodiment. The cylinder backings 13A are disposed so as to be parallel to the longitudinal direction (i.e. axial direction) of a cylinder portion 11 of the drum 10, and are rectangular plates both ends of which are in contact with backing rings 14. The cylinder backings 13A are sufficiently thick and are arranged along the circumference of the cylinder portion 11 at regular intervals. The cylinder backings 13A are installed so as to protrude from the outer surface of the cylinder portion 11, and the narrower surface of each of the cylinder backings 11 is in contact with the outer surface of the cylinder portion 11.
A protruding end of each of the cylinder backings 13A is provided with a plurality of protrusions 16 arranged in the longitudinal direction of the protruding end. Accordingly, the protruding end looks saw-toothed as a whole. Each of the cylinder backings 13A is arranged to be oriented relative to the direction of the rotational center by a predetermined angle b so that the forward end thereof is at an angle relative to the rotating direction of the drum when the drum rotates.
The cylinder backings 13A reinforce the structural strength of the cylinder portion 11 along the backing rings 14 and prevent the drum 10 from slipping on the bed of the water system. Further, it creates a pressure difference inside and outside the drum 10 when the water is introduced through the suction hole 21i, thereby making the drum 10 rotate by itself. Still further, the cylinder backings 13A help the suction device 20 effectively inhale the deposits by scraping the bed of the water system using the protrusions 16 when the drum 10 rotates.
The sectioning plate 3OA is open at the upper side thereof and at both side ends thereof. However, the sectioning plate 3OA in the second embodiment is different from the sectioning plate 30 in the first embodiment in that the sectioning plate 3OA has a straight-line shape instead of the reverse-V shape, as in the first embodiment, and a middle portion of the sectioning plate 3OA may cover an upper portion of the suction pipe 21.
The area of effect of the suction force is wider when employing the sectioning plate 3OA in comparison with the case of employing the sectioning plate as in the first embodiment. Further, the sectioning plate 3OA can effectively prevent the deposits from diffusing into water around the suction device while inhaling the deposits. In FIGs. 8 and 9, baffles are not shown, but the sectioning plate 3OA may have baffles on the surface thereof. According to the second embodiment, each of the disk portions 12 can be a flat plate which does not have a straining sieve portion. In this case, the disk portions 12 may not be provided with backings 15. The suction device according to the second embodiment may be driven by hauling means and suction facilities 221 disposed outside the water system, as in the first embodiment.
FIG. 10 shows an apparatus for removing deposits and water in a water system according to a third embodiment.
As shown in FIG. 10, the apparatus for removing deposits and water in a water system according to the third embodiment is almost the same as the apparatus according to the second embodiment with respect to the structure and operation thereof, except for the structures of a cylinder portion HB of a drum 10 and a suction device 2OB. According to the third embodiment, the middle portion of the cylinder portion HB of the drum 10 bulges outward, and the suction device 2OB is an L-shaped pipe.
Part (i.e. lateral part) of the suction device 2OB serves as a suction pipe 2IB. An end of another part (i.e. vertical part) of the suction device 2OB is connected to a delivery pipe 23B connected to a transfer pipe 222.
Disk portions of the drum 10 may be flat plates which are provided with a straining sieve. In such a case, disk backings may not be provided to the disk portions. Alternatively, bearings may replace the disk portions.
According to the third embodiment, when collecting deposits and water in a water system, the collecting the deposits and water can be accomplished by hauling force of hauling means, as in the second embodiment. However, alternatively, the collecting the deposits and water can be accomplished by pulling or pushing backward and forward the drum 10 or pulling or pushing the drum 10 leftward and rightward using a bar having high strength instead of a rope. Further, the apparatus according to the third embodiment may be structured based on the first embodiment, instead of being structured based on the second embodiment.
FIG. 11 is a front view illustrating an apparatus for removing deposits and water in a water system according to a fourth embodiment. As shown in FIG. 11, the apparatus according to the fourth embodiment is almost the same as the apparatus according to the third embodiment with respect to the structure and operation thereof, except for a suction device 2OC which has a straight-line pipe structure instead of the L-shaped pipe structure. According to the fourth embodiment, part of the suction device 2OC comprises a suction pipe 21C, and a delivery pipe 23C is connected to an end of the suction device 2OC, which is on the opposite side of the suction pipe 21C, the delivery pipe being connected to a transfer pipe 222.
According to the fourth embodiment, the deposits and water can be removed by hauling the drum using the hauling force of a hauling means, or alternatively, by using a bar having high strength instead of a hauling rope.
In the apparatus according to the fourth embodiment, since the suction device 2OC has a straight-line pipe structure, the suction pipe may comprise two pipes symmetrically arranged to the left and right of the delivery pipe 23C.
FIG. 12 is a side view illustrating an apparatus for removing deposits and water in a water system according to a fifth embodiment
As shown in FIG. 12, the apparatus for removing deposits and water in a water system according to the fifth embodiment includes a drum 1OD and a suction device 2OD. The structure of the drum 1OD is the same as the structure of the drum 10 in the first embodiment. Accordingly, a detailed description of the drum 1OD will be omitted.
The suction device 2OD includes a suction pipe 21D passing through the center of the drum 1OD and serving as a rotational shaft. One or a plurality of suction holes 21i' is formed in the suction pipe 21D so as to be disposed in the drum 1OD. The suction pipe 21D is connected to a transfer pipe 222 so that inhaled deposits and water can be transferred to the outside of the water system. The suction device 2OD has a sectioning plate portion 25, acting like the sectioning plate 30 in the first embodiment, and the sectioning plate portion 25 and the suction device 2OD are an integrated single body.
The sectioning plate portion 25 divides a space inside the drum 1OD into a first space disposed relatively near suction holes 21i' and a second space disposed relatively far from the suction holes 21i, ' and restricts the flow of the water and the deposits so as to introduce the water and the deposits through a straining sieve near the suction holes 2Ii1.
The invention is explained above with reference to the embodiments, but is not limited to the above-mentioned embodiments or to the accompanying drawings. The embodiments can be modified in a variety of ways within the technical spirit of the invention by people having ordinary skill in the art.

Claims

[CLAIMS]
[Claim l]
An apparatus for removing deposits and water in a water system, comprising: a rotatable drum which is partially or entirely made of a straining sieve so that water and deposits in a lower position of a water system can be introduced into the drum/ a suction device including a suction pipe which is disposed to pass through a center of the drum and which serves as a rotational shaft of the drum, wherein one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum in order to inhale the deposits and water therethrough, and wherein the suction device is connected to a transfer pipe which transfers the deposits and water to an outside of the water system; and a sectioning plate sectioning an inner space of the drum into a first space relatively near the suction hole and a second space relatively far from the suction hole and restricting flow of the deposits and water so as for the deposits and water to be introduced through a portion of the straining sieve which is near the suction holes. [Claim 2] The apparatus for removing deposits and water in a water system according to claim 1, wherein a middle portion of the drum bulges outward. [Claim 3]
The apparatus for removing deposits and water in a water system according to claim 1, wherein either a cylinder portion or a disk portion of the drum is provided with a plurality of backings arranged so as to be spaced apart from each other. [Claim 4]
The apparatus for removing deposits and water in a water system according to claim 3, wherein each backing provided to the cylinder portion protrudes from an outer surface of the cylinder portion. [Claim 5]
The apparatus for removing deposits and water in a water system according to claim 4, wherein each backing provided to the cylinder portion extends in an axial direction of the cylinder portion. [Claim β]
The apparatus for removing deposits and water in a water system according to claim 5, wherein each backing provided to the cylinder portion has an end protruding from an outer surface of the cylinder, wherein the end is saw- toothed. [Claim 7]
The apparatus for removing deposits and water in a water system according to claim 5 or 6, wherein each backing protruding from an outer surface of the cylinder portion is oriented at an angle relative to a direction of a rotational center. [Claim 8]
The apparatus for removing deposits and water in a water system according to claim 1, wherein the suction device has a ring-shaped pipe structure in which a portion of the ring-shaped pipe structure serves as the suction pipe and a delivery pipe is provided to an end of the ring-shaped pipe, which is on a side opposite the suction pipe, in order to couple the suction device to the transfer pipe. [Claim 9]
The apparatus for removing deposits and water in a water system according to claim 1, wherein the suction device has an L-shaped pipe structure or a straight-line-shaped structure, in which a portion of the L-shaped or the straight-line-shaped pipe structure serves as the suction pipe, and a delivery pipe is provided to an end of the L- shaped or the straight-line-shaped pipe structure, which is on the opposite side of the suction pipe, in order to couple the suction device to the transfer pipe. [Claim 10]
The apparatus for removing deposits and water in a water system according to claim 8 or 9, wherein a buoy is connected to one end of the ring-shaped or the L-shaped suction device, which is near the delivery pipe, in order to make the end of the suction device float and be spaced apart from the lower position of the water system by a predetermined distance. [Claim 11]
The apparatus for removing deposits and water in a water system according to claim 1, wherein each of the suction holes has a slot shape, an oval shape, or a dumbbell shape, and the suction holes are arranged in a longitudinal direction of the suction pipe. [Claim 12]
The apparatus for removing deposits and water in a water system according to claim 11, wherein the suction hole is oriented at an angle relative to a longitudinal direction of the suction pipe. [Claim 13]
The apparatus for removing deposits and water in a water system according to claim 1, wherein all or part of an edge of the sectioning plate is disposed close to an inner surface of the drum. [Claim 14]
The apparatus for removing deposits and water in a water system according to claim 1, wherein a finishing member made of a flexible material is provided to part or all of an edge of the sectioning plate so as for the finishing member to be disposed in contact with an inner surface of the drum. [Claim 15]
The apparatus for removing deposits and water in a water system according to any one of claims 1, 13, and 14, wherein the sectioning plate is open at an underside portion and both side end portions thereof. [Claim 16]
The apparatus for removing deposits and water in a water system according to claim 15, wherein the sectioning plate has a reversed-V shape and is disposed so as to cover the suction pipe. [Claim 17]
The apparatus for removing deposits and water in a water system according to claim 16, wherein the sectioning plate has a plurality of baffles arranged so as to be spaced apart from each other on opposing surfaces thereof. [Claim 18] The apparatus for removing deposits and water in a water system according to claim 1, further comprising a single underwater camera or a plurality of underwater cameras, which are disposed to one side of the suction device, take photographs showing an operation state of collecting the deposits and water, and send the photographs to the outside of the water system. [Claim 19]
An apparatus for removing deposits and water in a water system, comprising: a rotatable drum partially or entirely formed of a straining sieve so that deposits and water on a bed of a water system can be introduced thereinto; a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft, wherein one or a plurality of suction holes is formed in the suction pipe so as to be disposed inside the drum, and the suction device is structured so as to be connected to a transfer pipe which transfers the deposits and water, which are inhaled into the suction pipe, to the outside of the water system; and a sectioning plate sectioning an inner space of the drum into a first space relatively near the suction hole and a second space relatively far from the suction hole in order to restrict flow of the deposits and water so as to be introduced into the drum through the straining sieve disposed near the suction hole. [Claim 20]
An apparatus for removing deposits and water in a water system, comprising: a rotatable drum formed partially or entirely of a straining sieve so as to allow deposits and water in a lower position of a water system to be introduced into the drum; a suction device including a suction pipe passing through a center of the drum and serving as a rotational shaft of the drum, wherein one or a plurality of suction holes is formed on the suction pipe so as to be inside the drum in order to allow the deposits and water to be introduced therethrough, and the suction device is structured so as to be connected to a transfer pipe which transfers the deposits and water, which are inhaled, to an outside of the water system; and a sectioning plate sectioning an inner space into a first space relatively near the suction hole and a second space relatively far from the suction hole in order to restrict flow of the deposits and water so as for the deposits and water to be introduced through the straining sieve disposed near the suction hole, wherein the suction hole has a slot shape, an oval shape, or a dumbbell shape and is arranged in a longitudinal direction of the suction pipe, wherein a finishing member made of a flexible material is provided to part or all of edges of the sectioning plate, and wherein the finishing member is in contact with an inner surface of the drum.
PCT/KR2007/004385 2006-09-29 2007-09-11 Apparatus for removing deposit and water Ceased WO2008038913A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020060096016A KR100716559B1 (en) 2006-09-29 2006-09-29 Aqueous Sediment and Water Collector
KR10-2006-0096016 2006-09-29

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