JP6609811B2 - Mud-mouth device with float - Google Patents

Description

  The present invention relates to an apparatus for recovering or removing bottom sediments such as dams, lakes, rivers, aquariums of industrial facilities, water treatment apparatuses and the like.

  Underwater sediments are characterized by their presence in every part of the water, from sediments generated by natural phenomena and deposited in water to sediments generated by social activities, and need to be collected and removed. Although many types of equipment are provided for the recovery and removal of these precipitates, they do not satisfy all of them and are currently underwater work that is difficult to see directly. However, there are many tasks that rely on experience and intuition.

Patent 3895505 JP2004-522877 Japanese Patent Application No. 2006-011674 JP 2009-174196 A JP-A-1-295926

The pumping means used in the recovery and removal of submerged sediments by hydraulic transportation methods include head drainage, siphon drainage, centrifugal pumps, piston pumps, jet pumps, air lift pumps, vacuum devices, etc. When doing so, they are called “pumps”.

In the recovery and removal work of submerged sediments with pumps, etc., it is most important to maintain the proper distance and water absorption direction where the suction pipe end mud mouth is close to the sediments. It is common to open the mud outlet at a fixed position, and the mud is in a very narrow range, and even in facilities using submersible pumps with stirring blades, the range that can be sucked is limited, and most of the water tanks There is a problem that the sediment tends to remain accumulated.

When the mud suction port such as a pump is hung on the sediment to perform the mud sucking work, it is necessary to follow and drop according to the progress of the mud or to move the plane and suck the mud. In addition, moving and moving requires appropriate equipment and skilled operation and management. The removal of sediment in dams and the collection of sea sand in the sea depend on the operation of cranes and ladders on dredgers and work vessels. It is a follow-up descent and movement work, it is easily affected by waves and unstable work, and it is also a water bottom work that cannot be seen, and work from measuring instruments with time lag is work that requires skill to rely on intuition. There is a problem.

Furthermore, in the operation of collecting and removing precipitates, the accumulated deposits are often processed, and an apparatus that can easily start the operation from the depth of water that has become shallow due to deposition is desired.

In the present invention, in a state where a large amount of sediment is accumulated deeply, a suction hose that extends from the end of the water inlet pipe of a pump or the like and craws on the sediment (used as a term for a flexible flexible tube) A mud suction pipe is connected to the tip, and the mud suction pipe is bent downward from the horizontal for a certain length in consideration of the angle of repose of the deposited sediment, and then turned into a U-shaped tube that is inverted and raised, A mud inlet is opened downward on the lower side of the U-shaped inverted part, and a supplementary water absorption cylinder is formed at the upper end of the inverted pipe. The mud pipe and the suction hose are connected to each other through a rotating pipe joint that is rotatable about the streamline direction of the mud pipe horizontal part. In the upper position, the mud suction pipe and the auxiliary water absorption cylinder are not levitated in the predetermined direction in the bottomed water.置又 mounting the float to stand is anchored, at shallow depths can 吸泥 by lodging inclined, in deep water depths and bottom landing upright without droop, and 吸泥 port device to follow 吸泥 in the form of its own weight sink.

“Constant length considering the repose angle of the handling sediment” described in the previous paragraph means that the mud mouth pipe is connected to the mud mouth pipe from the outer peripheral edge of the mud mouth opened at the lower side of the inverted part of the mud mouth pipe. A line extending at the angle of repose of the handling sediment toward the suction hose to be used indicates a height difference where the line reaches the lower edge of the suction hose where the suction hose can be bent away from the connection part of the suction pipe. It is.

In the case of mud-absorbing work at deep water dams or the sea, a mud inlet pipe is connected to the lower end of the suction hose connected to a dredger or a workbench pump, etc. in a vertical direction with a flange, and the lower part of the suction hose is sucked downward from the flange. Bend the mud pipe in the shape of a fishhook, open a mud mouth at the bottom of the lowermost bent part, stretch the pipe part that rises up to a height that will not be buried in the sediment that collapses, and inhale the water above the sediment The auxiliary water intake cylinder with an open auxiliary water intake opening is formed, and the mud opening pipe and the auxiliary water absorption cylinder are placed above the center of gravity in the water without raising the mud suction pipe and the auxiliary water absorption cylinder. Mounted or moored with a float to stand up, can absorb mud by sloping at shallow water depths, and can stand at the bottom without drooping at deep water depths and follow the bottom in the form of sinking its own weight. And

In the case of pumps for small-scale facilities that tend to have shallow water depth due to sediment accumulation, a mud suction pipe is connected to the tip of a suction hose that extends from the pump and crawls on the bottom sediment. From the horizontal to the bottom, bent and lowered for a certain length in consideration of the angle of repose of the deposited sediment, forming an L-shaped mud mouth pipe with a mud mouth opening at the lower end, and the mud mouth pipe and suction The pipe joint part connecting the hose is connected via a rotary pipe joint that is rotatable about the streamline direction of the connection part, and above the center of gravity position of the suction port pipe, Attached or moored with a float of buoyancy that stands up without raising the mud mouth pipe, so that the lower end of the mud mouth guard of the mud mouth pipe can stand up in a predetermined direction in the ground, At shallow water depths, sloping can be absorbed and mud can be absorbed, and at deep water depths, the bottom can stand and the bottom can settle. And 吸泥 opening apparatus capable of inhaling, enter into wire or rope suction mud port device, to be easily moved from outside the tank.

The apparatus of the present invention as described above is installed in the form of dam inflow, sabo dam, or industrial facility aquarium where a large amount of sediment is generated. In addition, it is possible to perform sedimentation suppression and recovery / removal work by a work that is moved as needed in a timely manner, and operations during the work can be greatly reduced.

In dredging work and sand collection work carried out in deep water such as dam lakes and the sea, especially point dredging and sand collection work, the surrounding sediment tends to collapse with the progress of mud absorption, and the mud suction port is buried, Although the mud is repeatedly operated, the device according to the present invention having the above-described auxiliary water absorption function maintains the minimum water passage even when buried, and the upper water from the auxiliary water inlet is passed through a series of pipes. By directly sucking into the mud suction port in the water-flowing state, burying, blocking, mud sucking, and opening can be continued smoothly, and the mud sucking work can proceed smoothly while sinking its own weight.

This means that, in the work where the sediment accumulation depth is deep, after the mud suction device is settled, the hanging wire can be loosened, and the mud can be sucked down by its own weight and suction pressure. This makes it difficult to be affected by shaking of the work ship and changes in the water level, and wire operation of the work ship is significantly reduced.

In water tanks in small-scale facilities, etc., the mud-mouth apparatus of the present invention having some buoyancy is easy to move with a rope from the outside of the tank, and in many cases it can be moved manually to places where sediment is likely to accumulate. Therefore, in places where the accumulation depth is deep, the mud can be left to absorb mud, and in a tank where the accumulation depth is shallow, the cleaning mud can be moved from the frog-like precipitate to sand and gravel by swinging manually. Economical effects such as being easy to carry out with precipitates up to are large.

It is a figure which shows the use condition in the sabo dam of a 1st Example apparatus. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows 1st Example apparatus, (a) figure in a figure is a front view seen from the connection surface, (b) figure in a figure is a figure which shows a side surface. (C) in the figure is a view showing a lying state of the first embodiment apparatus, and (2) in the figure is a view showing a relationship between the first embodiment apparatus and the sediment repose angle. It is a figure which shows 2nd Example apparatus, (E) figure in a figure shows a side view, (H) figure is AA top view of (E) figure. It is a side view of a 3rd Example device. It is a figure which shows a 4th Example apparatus, (G) figure is a side view in the figure, (H) figure shows the BB part cross section of (G) figure. It is a figure which shows a 5th Example apparatus, (ri) figure in a figure shows a connection side front view, (nu) figure is a side view. It is a figure which shows the state which uses a 5th Example apparatus for a water tank.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

The mud-mouth apparatus 1 which is the first embodiment of the present invention shows a front view as seen from the connection side in (a) of FIG. 2, a side view of (b), and a sabo that is filled with sand. As shown in FIG. 1, the configuration used for the weir is a mud suction pipe with a rotating flange 15B that rotatably holds a hose nipple 16 that is easily connected to a suction hose on the sediment and has a horizontal streamline direction. 11 is connected to the flange 15, the mud suction pipe 11 is bent downward, and is formed into a U-shaped tube that is lowered and lowered by a predetermined length. While opening the opening | mouth c, the upper part of the auxiliary | assistant water absorption cylinder 12 which is a front end side rising pipe part is provided with the float 14, and the upper end is opened and it is set as the auxiliary | assistant water absorption opening | mouth d.

  As shown in FIG. 3C, the buoyancy required for the float 14 is such that the mass of the mud suction device 1 is added to the center of gravity of the device when the mud suction device 1 is lying down. When the lower end is grounded at the lower side g of the mud suction port c, the center of gravity of the buoyant force of the float 14 to be placed and the grounding are set to be larger than the torque that causes the device to fall down between the center of gravity of the device and the grounding position g. The torque that is generated between the positions g and is used to stand up the apparatus is selected to be larger, and the buoyancy that allows the mud suction apparatus 1 to stand up in the bottomed water is set.

  In addition, the buoyancy of the float 14 may increase or decrease the mud absorption effect obtained by the mud suction device 1 being pushed into the sediment by its own weight, taking into consideration the properties of the target sediment, the working method, etc. It is a decision.

Further, as shown in FIG. 3 (2), the height h between the lower side of the suction hose 65 and the lowermost mudguard guard 17 is such that the mud suction work of the mud suction device 1 progresses, and When a depression corresponding to the angle of repose θ is formed, the upper end edge i of the depression is sufficiently separated from the hose nipple 16 held by the flange 15B, and is in contact with the lower side portion of the suction hose 65 that is easily bent.

As shown in FIG. 1, when the mud suction device 1 as described above is used for the operation of causing the sediment 63 of the full sand control dam 60 to flow down to the downstream side of the dam, a drop and siphon drainage are used as the lifting means. Then, the water inlet 62 portion of the dam 61 is raised using a sandbag or a temporary dam plate so that the water level can be raised to a height higher than the upper side of the siphon tube 66, and on the sediment 63, 3 (C) A siphon tube suspended in the downstream side wall of the dam 61 by submerging the mud-mouth device 1 by excavating a hollow that can be submerged while the mud-port device 1 shown in FIG. 66 is connected and communicated with a suction hose 65.

If the sabo weir 60 is filled with the inflowing water from the upstream, and the mud suction device 1 starts to pass water by the head drainage, the surrounding sediment is mixed and sucked into the suction water from the mud suction port c. Depending on the depth of the depression accompanying the progress of sand absorption, the mud suction port device 1 sucks mud while turning up at the rotating flange 15B portion, and the mud suction port c that has turned downward further It becomes easy to absorb sand.

Even if the sand absorption progresses and the dent becomes deeper, there is a difference in height h between the suction hose 65 connected to the flange 15 and the mud suction port c, which hinders the sedimentation at the peripheral edge i of the dent. The suction hose 65 bends easily, stands up at the float 14, and the mud suction port c always in the bottomed state can absorb sand following the depth of the depression on the sediment. It progresses from the state of the initial hollow of a to the state of the hollow advanced of b, requiring almost no external operation.

During this time, even if the water level has dropped several times and intake air and water flow operation may stop, as long as there is inflow water from the upstream, full water, water flow, and restart are repeated, and sediment removal is natural. Proceed to.

As shown in FIG. 4, the mud suction port device 2 of the second embodiment is a device in which a connection flange 25 with the suction hose is connected in the vertical direction. It is bent in the shape of a fishhook, and a mud suction port c is opened at the lower side of the lowermost bent portion, and an auxiliary water intake port is provided at the upper end of the auxiliary water absorption tube 22 that is an inverted and rising pipe so that upward water can be sucked in. In addition to opening d, a float 24 is mounted on the upper portion of the mud suction pipe 21 and on the outer periphery of the lower side of the connection flange 25 to stand the mud suction apparatus 2 in the ground.

The mud-mouth device 2 is mainly used for removing sediment in dams and collecting sea sand, and is used in the form of hanging from a ship or a trolley with a wire. In the standing state, sand absorption mud is performed in the direction directly below, but in the initial stage of operation, the mud absorption work can be performed in a state close to lodging at a shallow water depth.

When working at a deep water depth, it may be necessary to frequently repeat the lifting and lowering of the device due to work circumstances and troubles, and the attached float 24 may delay the descent and rising speed. Instead of mounting the float 24 fixed to the fuselage, the float 24 is connected to the upper part of the mud suction port device 2 using a chain or wire so that buoyancy acts from a depth slightly shallower than the working water depth. By doing so, not only the lifting and lowering workability, but also the float 24 can be easily fastened and removed as necessary, and for example, the ascending / descending speed when crushing a hard clay layer can be maintained and improved.

In addition, as a sand suction device that has been used for sea sand collection or dam sediment removal from the past, it is simply a general sand suction device with a lower end that is expanded in a trumpet shape. Even if there is a supplementary water absorption function, a large amount of flushing water or a separate replenishment water pipe to be provided is allowed to suck upward water into the mud mouth, and the same float as the mud mouth apparatus 2 of this embodiment is used. It is possible to exert the same effect by placing it.

The mud suction port device 3 of the third embodiment illustrated in FIG. 5 is obtained by replacing the float 14 of the mud suction port device 1 illustrated in FIG. 2 with a spherical float 34 and mooring the hook f near the flange 35 with a chain. There is a feature that the apparatus can be completely laid down during handling, and the float 34 can be easily removed and handled separately.

  The mud suction port device 4 of the fourth embodiment shown in FIG. 6 (g) is provided upright with a gap between the vertical mud suction port pipes 41 and the auxiliary water absorption cylinders 42 arranged side by side. The sand collecting pipe 43 is connected and communicated, and the lower side of the sand collecting pipe 43 has a slit-like suction on the entire length thereof as shown in FIG. A device in which the mud mouth c is closed, and a float 44 for anchoring the device in the water is anchored with a chain 48 at the upper center of the device.

  The mud suction port device 4 is a device that attempts to eliminate sediments in a wide range as much as possible. In a water tank etc., it can also be set as the apparatus which removes the sediment of a wide range by moving to the direction orthogonal to the sand collecting pipe 43 in the state settled on the water tank bottom.

  Further, by connecting the connecting portion flange 45 in the vertical direction using the rotating flange 45B, the mud suction port device 4 can be swung horizontally or can be swung in a fan shape to enable a wide range of mud absorbing work. .

7 and FIG. 8 shows a mud suction port device 5 of the fifth embodiment, which is connected to a suction hose 75 with a hose nipple 56, a rotating flange 55B and a flange 55 interposed therebetween, and a mud sucker on the tip side from the flange 55. The mouth tube 51 is bent from the horizontal to the L-shape, securing a height in consideration of the repose angle θ of the handling sediment as in Example 1, and a trumpet-shaped water suction port 53 is formed at the lower end. In addition to opening c, a pole 58 is erected in the vicinity of the flange 55 of the suction pipe 51 and a float 54 is attached to the pole 58. The suction mouth apparatus does not include a supplementary suction port. is there.

FIG. 8 is a sectional view of a water tank showing a state of mud suction using the mud mouth apparatus 5, and a suction hose 75 connected to a suction hose 75 extending from a suction port of a submersible pump 71 suspended in the water tank 70. The mud mouth device 5 is allowed to suck mud while moving the guard 57 provided on the front surface of the lower mud mouth c below the water suction port 53 in the bottomed state, or moved to a place where deposits are deposited. Mud can be absorbed in the direct downward direction.

The mud-mouth device 5 without the auxiliary water-absorbing function is a water tank having a low sediment accumulation depth, such as a water tank with a shallow sediment accumulation depth, or a sediment sedimented using a flocculant, Useful for sediment recovery in facilities that do not want to lose concentration.

Further, in the water tank as shown in FIG. 8, the mud-mouth device 5 is replaced with the mud-mouth device 4 shown in FIG. 6, or a sediment having a large sedimentation property or a sediment having a large amount of sediment is handled. In that case, it can be dealt with by replacing the mud-mouth apparatus 1 shown in FIG. 2 or the mud-mouth apparatus 3 shown in FIG.

The auxiliary water absorption cylinder 12 of the mud inlet apparatus 1, the auxiliary water absorption cylinder 22 of the mud inlet apparatus 2, the auxiliary water absorption cylinder 32 of the mud inlet apparatus 3, and the auxiliary water absorption cylinder 42 of the mud inlet apparatus 4 are shown in FIG. A slit-shaped mud suction port similar to the slit-shaped mud suction port c of the sand collecting pipe 43 shown in (h) is opened along the longitudinal tube body, and the mud suction around the auxiliary water absorption cylinder when the device is buried Can be promoted.

The device of the present invention is used for fixed-point sedimentation and dredging sand sedimentation in dam lakes, sea sand collection and dredging in sea areas, power plant, irrigation, sediment recovery around water intakes for water supply, washing in industrial plants, cooling Simplifies sediment prevention and removal work in sediment-related water tank facilities, greatly improves sand removal and mud removal work, and exhibits great economic benefits.

1 Mud-mouth device 1 of Example 1
2 Mud-mouth device 2 of Example 2
3 Mud-mouth device 3 of Example 3
4 Mud-mouth device 4 of Example 4
5 Mud-mouth device 5 of Example 5
11, 21, 31, 41, 51 Mud inlet pipe 12, 22, 32, 42 of each device Supplementary water absorption tube 13 of each device Water absorption tubes 14, 24, 34, 44, 54 Float 15, 25, 35 of each device 45, 55 Device side flanges 15B, 35B, 45B, 55B of each device Hose nipples 17, 36, 56 of each device Hose nipples 17, 47, 57 )
38, 48 chain
43 Sand collecting pipe 53 Water intake port 58 Float mounting pole 60 Sabo dam 61 Dam 62 Drain port 63 Sabo dam sediment 64 Wire 65 Suction hose 66 Siphon pipe 67 Air vent valve 70 Water tank 71 Submersible pump 72 Mud pipe 73 Precipitate 75 Suction hose 78 Rope 79 Rope a Indentation b showing the initial sand absorption state Indentation c showing the state in which sand absorption has progressed c Absorption port d Upper water supplementary intake port e Rope side hook f Rope upper hook g When the device is lying down Ground contact position on the lower suction port side of the h Height from the lower side of the suction hose to the lower end of the suction port guard i Edge of the excavated recess θ Repose angle of the sediment

Claims (5)

A mud suction pipe connected to a substantially horizontal suction hose connected to the pumping means is opened at a lower end bent from a substantially horizontal direction downward, and a lower side of the horizontal part of the suction pipe is opened. A line obtained by extending the height difference of the suction port opening end from the outer periphery of the suction port opening at the angle of repose of the sediment to be handled reaches the lower edge of the suction hose where the suction hose is connected to the suction port pipe. In addition to the height, in addition to a vertical pipe section bent downwardly of the mud mouth pipe, a supplementary water suction pipe capable of sucking the upper water of the sediment is erected, and below the auxiliary water suction pipe The end is in open communication with the mud suction port, and a buoyancy float that does not float the mud suction tube and the auxiliary water absorption tube is placed above the center of gravity of the mud suction tube and the auxiliary water absorption tube. Or moored, the sludge inlet pipe and the auxiliary water absorption cylinder can absorb sludge sloping at shallow water depth,吸泥 opening apparatus which can 吸泥 and bottom landing upright in a predetermined direction. In the form that the mud suction pipe connected to the lower end of the suction hose that is connected and connected to the lifting means is extended downward by a certain length to open the mud suction pipe and is attached to the mud suction pipe. A supplementary water absorption cylinder that can suck in the upper water of the sediment is installed at the upper end, and the lower end is openly communicated with the mud opening and at a position higher than the center of gravity of the mud suction pipe and the auxiliary water absorption cylinder. Mount or moor the buoyancy float that does not lift the mud inlet pipe and the auxiliary water absorption cylinder, and the mud inlet pipe and the auxiliary water absorption cylinder can sink mud in a sloping slope at shallow water depth. A mud-mouth device that allows the mud to stand in the predetermined direction at the water depth. A vertical suction mud mouth pipe portion of the suction mouth pipe device connected to the tip of the suction hose connected to the pumping means and a supplementary water suction pipe for sucking in the upper water of the sediment are set up at an interval. Between the lower end of the mud suction pipe and the lower end of the auxiliary water suction cylinder, a sludge suction pipe device connected to and connected by a sand collecting pipe with a slit-like mud suction opening in the length direction at the bottom is formed. A buoyant float that does not lift the suction port apparatus is placed or moored at a position higher than the gravity center position of the suction port apparatus, and the suction port apparatus is in a predetermined direction in water. A mud-mouth device that can stand up on the bottom and suck mud. A mud suction pipe is connected to the tip of a generally horizontal suction hose connected to the lifting means, the mud suction pipe is bent downward, and the mud suction opening is opened at the lower end. A line in which the height difference between the lower side of the horizontal pipe and the suction port opening end is extended from the outer peripheral edge of the suction port opening at the angle of repose of the sediment to be handled is flexible for the suction hose connected to the suction port pipe. A buoyant float that does not float the mud suction pipe is placed or moored at a position that is higher than the center of gravity of the mud suction pipe, and reaches the lower edge of the position. A mud-mouth device that allows pipes to sludge and absorb mud at shallow water depths, and to sink mud by standing in a predetermined direction at deep water depths. The suction mud according to any one of claims 1, 2, 3, and 4, wherein a connection portion between the suction hose and the mud suction port device is connected so as to be rotatable about the water passage direction of the pipe joint. Mouth device.