JPH10131230A - Water bottom deposited sediment shifting device and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shifting device capable of shifting the deposited sediment on a deep water bottom with a simple structure. SOLUTION: One end of a hose 16 is communicated with a sediment suction section 14 provided on a crawler vehicle via a sediment suction valve 60, and the other end is communicated with the first and second tanks 22, 24 via the first and second suction valves 18, 20 respectively in this water bottom deposited sediment shifting device. The first and second tanks 22, 24 are communicated with a vacuum generating device 30 via the first and second pressure reducing valves 26, 28. One end of a compressed air feed hose 62 is communicated with the other end side of the hose 16 near the sediment suction valve 60, and the other end is communicated with a compressed air feed device 36 via a compressed air feed valve 64. The deposited sediment is sucked and shifted to the first tank 22 or the second tank 24 through the hose 16 by the negative pressure in the first and second tanks 22, 24. When the shifting speed of the deposited sediment in the hose 16 is reduced, compressed air is fed to one end side of the hose 16, and the deposited sediment in the hose 16 is pushed up to the first tank 22 or the second tank 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing sediment on the bottom of a water bottom and the like, and an apparatus and a device for transferring sediment on the bottom of a water bottom suitable for transferring sediment on a deep bottom or for long distance transfer. It relates to a method for transferring sediment.

[0002]

2. Description of the Related Art FIG. 9 shows an example of a conventional apparatus for dredging sediment deposited on a water bottom. FIG. 9 is a configuration diagram of an example of a conventional undersea sediment transporting apparatus. In FIG. 9, an arm 12 that can move up and down is disposed on a barge 10 floating on the surface of the water to be dredged, and a sediment suction unit 14 that covers the sediment deposited on the water bottom is disposed at the tip of the arm 12. You. One end of a hose 16 communicates with the earth and sand suction part 14 and is opened. And the other end of the hose 16 is branched into two,
The first tank 22 and the second tank 24 are connected to each other via the first suction valve 18 and the second suction valve 20, respectively.
The first tank 22 and the second tank 24 are connected to a vacuum generator 30 via a first pressure reducing valve 26 and a second pressure reducing valve 28, respectively. Each of them is connected to a compressed air supply device 36 via a valve 34, and is further connected to a sediment storage tank 42 via a first discharge valve 38 and a second discharge valve 40, respectively. The valves 18, 20, 26, 2
8, 32, 40, tanks 22, 24 and vacuum generator 30
And the compressed air supply device 36 and the sediment storage tank 42
It may be arranged on the barge 10 or on the ground, or a part may be arranged on the barge 10 and the remaining part may be arranged on the ground.

In such a configuration, first, the first suction valve 18 and the first pressure reducing valve 26 are opened, and the first pressure valve 3 is opened.
2 and the first discharge valve 38 are closed, and the vacuum generator 30
As a result, the inside of the first tank 22 is sucked and becomes a negative pressure, and the inside of the hose 16 also becomes a negative pressure, and the sediment deposited from the earth and sand suction unit 14 passes through the inside of the hose 16 and is sucked and transferred into the first tank 22. During this time, the second pressure valve 34 and the second discharge valve 40 are opened, the second suction valve 20 and the second pressure reducing valve 28 are closed, and the compressed air from the compressed air supply device 36 is supplied to the second tank 24. Supplied second tank 24
The inside becomes positive pressure, and if there is sediment deposited in the second tank 24,
It is transferred to the earth and sand storage tank 42. Next, the first suction valve 18 and the second pressure reducing valve 26 are closed and the first
When the pressurizing valve 32 and the first discharge valve 38 are opened, the sediment deposited in the first tank 22 is transferred to the sediment storage tank 42 by the compressed air of the compressed air supply device 36. During this time, the second pressure valve 34 and the second discharge valve 40 are closed, and the second suction valve 20 and the second pressure reducing valve 2 are closed.
8 is opened, and the sediment deposited is sucked and transferred to the second tank 24 from the earth and sand suction unit 14.

As described above, the first tank 22 and the second tank 2
4, the sediment is alternately sucked and transferred, and by repeating this, all the sediment on the water bottom can be efficiently transferred to the sediment storage tank 42.

[0005] The applicant of the present invention has also disclosed Japanese Patent Publication No. 63-6656.
No. 5 proposes another underwater sediment transporting apparatus. This device is briefly described below. A submersible pump is mounted on a tracked vehicle that can run on the water floor, and one end of a drainage hose is connected to this submersible pump, and a screw transfer device is provided in front of the submersible pump to crush sediment and sediment and collect it at the suction port of the submersible pump. Can be Then, the sediment is discharged through the drainage hose together with a large amount of water by the submersible pump.

[0006]

In the conventional apparatus shown in FIG. 9, there is no problem when the depth of the water bottom is shallow. However, a problem arises when the water depth becomes deep, the amount of sediment deposited in the hose 16 increases, and its own weight becomes large. Also, a problem arises when the transfer distance is long. This is because the negative pressure in the first and second tanks 22 and 24 by the vacuum generator 30 causes a problem that the weight of the sediment in the hose 16 is too large to be transferred, and that the suction of the sediment is caused. This is because there is a possibility that the transfer of the sediment deposited in the hose 16 may be stopped due to an increase in the negative pressure in the no-soil suction portion 14. Further, the longer the transfer distance, the greater the resistance to the flow in the hose 16.
Then, the applicant of the present invention first described in Japanese Patent Publication No. 63-66565.
For the same reason, when the water depth is deep and the transfer distance is long, the apparatus proposed in the above publication cannot transfer sediment through the discharge hose only by the pressure of the submersible pump. In order to solve such a problem, a booster pump has conventionally been provided in the middle of a hose or a drain hose. However, installing this booster pump requires a great deal of labor.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances of the above-described conventional apparatus, and has a simple structure, capable of transferring sediment on the deep bottom of the water, and capable of transferring the sediment on a long distance. It is an object of the present invention to provide a transfer device and a method for transferring sediment from the bottom of the water.

[0008]

In order to achieve the above object, the undersea sediment transfer apparatus of the present invention has one end of a hose connected to a sediment suction part for covering the sediment on the bottom, and the other end of the hose is connected to the other end of the hose. In the underwater sediment transporting device in which the sediment is transported in the hose by suction, a sediment suction valve is interposed in the hose near the sediment suction part, and a compressed air supply hose is connected to the other end near the valve. One end is communicated, and the other end of the compressed air supply hose is connected to a compressed air supply device via a compressed air supply valve.

The other end of the hose is connected to a tank via a suction valve, and the tank is connected to a vacuum generator via a pressure reducing valve. The earth and sand suction valve, the suction valve and the pressure reducing valve are opened to open the tank. The sediment suctioning unit sucks and transfers the sediment into the tank, and further closes the sediment suction valve and opens the compressed air supply valve to transfer the sediment in the hose to the tank by compressed air. May be.

Further, the other end of the hose is branched into two and communicates with the first and second tanks via first and second suction valves, respectively, and these first and second tanks are connected to the first and second tanks. The first and second pressure reducing valves are connected to a vacuum generator via the respective ones, and the sediment suction valve and the suction valve and the pressure reducing valve associated with one of the tanks are opened to allow the sediment suctioning part to remove the sediment from the one. Suction transfer into the tank, and further close the sediment suction valve and open the compressed air supply valve to transfer the sediment deposited in the hose to the one tank by compressed air, and transfer the sediment to the one tank. During the transfer, the sediment in the other tank may be discharged, and the sediment may be alternately transferred to the first and second tanks.

Also, the other end of the hose is branched into two,
One is connected to a vacuum generating device via a pressure reducing valve, the other is provided with a discharge valve, and the sediment suction valve and the pressure reducing valve are opened, and the sediment is sucked and transferred from the sediment suction part into the hose. The sediment suction valve may be closed, and the compressed air supply valve and the discharge valve may be opened to transfer and discharge the sediment deposited in the hose by the compressed air.

Further, an auxiliary valve having a flow rate adjusting function and an opening / closing function is provided in parallel with the compressed air supply valve,
While the sediment is transferred through the hose by suction from the other end of the hose, the auxiliary valve is opened during the remainder except at the beginning or at the base to supply a small amount of compressed air into the hose. Alternatively, the small amount of compressed air may be configured to assist the transfer of the sediment deposited in the hose.

Further, in the method of transferring sediment deposited on the bottom of the water according to the present invention, one end of a hose is communicated with a sediment suction part for covering the sediment deposited on the bottom of the water, the other end of the hose is sucked, and the hose is connected to the hose near the sediment suction part. Interposing a sediment suction valve and communicating one end of a compressed air supply hose to the other end near the valve, and communicating the other end of the compressed air supply hose to a compressed air supply device via a compressed air supply valve, The sediment suction valve is opened, the sediment is transferred from the sediment suction part through the hose by suction from the other end of the hose, the sediment suction valve is closed, and the compressed air supply valve is opened to open the compressed air supply valve. Transports the sediment deposited in the hose.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will now be described with reference to FIG.
This will be described with reference to FIG. FIG. 1 is a configuration diagram of an embodiment of a submerged sediment transfer apparatus of the present invention, and FIG.
FIG. 2A shows a sediment suction unit in FIG. 1, and FIG.
(B) is an external perspective view of a main part. FIG. 3 is a time chart showing the operation of the valve of FIG. In FIG. 1, the same members as those in FIG. 9 are denoted by the same reference numerals, and redundant description will be omitted.

FIG. 1 differs from FIG. 9 in the following point. Endless track vehicle 5 that can run on the bottom of the water
An arm 54 that can move up and down under the control of the hydraulic cylinder 52 is provided at the bottom of the arm 54, and the earth and sand suction unit 14 is provided at the tip of the arm 54. And this earth and sand suction part 14
The earth and sand suction valve 60 is interposed near the earth and sand suction part 14 of the hose 16 which communicates one end with the earth and sand. In addition, hose 1
6 is close to the earth and sand suction valve 60 and the earth and sand suction part 14.
One end of the compressed air supply hose 62 is opened on the opposite side, that is, on the other end side. The other end of the compressed air supply hose 62 is connected to the compressed air supply device 36 via a compressed air supply valve 64.

As shown in FIG. 2, the sediment suction unit 14 is a substantially box-shaped body having a bottom surface which is covered with the sediment and the lower edge is cut into the sediment.
By sucking the inside, the sediment having a high sediment content can be removed from the hose 1 without sucking water from the outer periphery of the sediment suction unit 14.
6 is transferred. In order to cover the sediment suction unit 14 with the same posture regardless of the vertical position,
For example, an arm 54 is formed on a parallelogram link, and the tip of the parallelogram link is configured to move up and down by a hydraulic cylinder 52.

The operation of the submerged sediment transporting apparatus of the present invention having such a configuration will be described with reference to FIG.
First, as a first operation mode, the earth and sand suction valve 60, the first pressure reducing valve 26, the first suction valve 18, the second pressurizing valve 34, and the second discharge valve 40 are opened. Further, the compressed air supply valve 64, the first pressure valve 32, the first discharge valve 38, the second pressure reducing valve 28, and the second suction valve 20 are closed. In this state, the negative pressure in the first tank 22 is gradually increased by the vacuum generator 30, and the sediment is transferred through the hose 16 by the negative pressure, and the speed is gradually increased. , Are transferred into the first tank 22. Thereafter, the transfer speed of the sediment in the hose 16 tends to decrease due to an increase in the weight of the sediment in the hose 16 and an increase in the negative pressure in the sediment suction unit 14. During this time, the inside of the second tank 24 is supplied with compressed air to have a positive pressure, and if there is sediment deposited in the second tank 24, it is discharged to the sediment storage tank 42. This hose 16
The time until the transfer speed of the sediment in the inside decreases, depends on the water depth, the diameter of the hose 16, the negative pressure of the vacuum generator 30, the condition of the sediment, and the like.
Seconds.

In this manner, when the transfer speed of the sediment deposited in the hose 16 falls below a predetermined value, the valve is switched as follows in the second operation mode. That is, the sediment suction valve 60, the first pressure reducing valve 26, the second pressurizing valve 34, and the second discharge valve 40 are closed, and the compressed air supply valve 64 and the first discharge valve 38 are opened. Then, the first pressure valve 32, the second pressure reducing valve 28, and the second suction valve 20
Remains closed and the first suction valve 18 remains open. Then, compressed air is supplied into the hose 16 from near the sediment suction valve 60, and the compressed air pushes up and transfers the sediment deposited in the hose 16 to the first tank 22.
Is transferred to The time for supplying the compressed air is set to a time required for the sediment in the hose 16 to be completely transferred into the first tank 22, and is, for example, about 30 seconds.

Then, after the sediment is transferred into the first tank 22, the valve is switched as follows in the third operation mode so that the sediment is transferred into the second tank 24. That is, the sediment suction valve 60, the first pressure valve 32, the second pressure reduction valve 28, and the second suction valve 20 are opened, the compressed air supply valve 64 and the first suction valve 18 are closed, and the first pressure reduction valve 26 The second pressure valve 34 and the second discharge valve 40 remain closed, and the first discharge valve 38 remains open. Then
The pressure inside the second tank 24 becomes negative, and the sediment deposited moves in the hose 16 and is transferred into the second tank 24. During this time,
The inside of the first tank 22 becomes positive pressure by the compressed air, and the sediment deposited in the first tank 22 is discharged to the sediment storage tank 42.

Then, when the transfer speed of the sediment deposited in the hose 16 decreases, the valve is switched as follows as a fourth operation mode. That is, the earth and sand suction valve 60 and the first
The pressurizing valve 32, the first discharge valve 38, and the second pressure reducing valve 28 are closed, and the compressed air supply valve 64 and the second discharge valve 40 are opened. Then, the first pressure reducing valve 26, the first suction valve 18, and the second pressurizing valve 34 are kept closed, and the second suction valve 20 is kept open. Then, the sediment deposited in the hose 16 is transferred into the second tank 24 by the compressed air.

As described above, by repeating the four operation modes, the sediment is alternately transferred to the first tank 22 and the second tank 24, and while the sediment is transferred to one tank, the other tank is recharged. Sediment is discharged. Here, the position of the sediment to be covered with the sediment suction unit 14 is shifted by moving the arm 54 up and down and moving the endless track vehicle 50 forward or backward as appropriate.
Of course, the negative pressure in 4 should not be increased more than necessary.

As described above, the submerged sediment transfer apparatus of the present invention can transfer the sediment in the hose 16 to the tank by supplying compressed air into the hose 16.
Compared with the conventional technique of providing a booster pump or the like in the middle of the hose 16, the configuration is extremely simple. In addition, by adjusting the pressure of the compressed air generated by the compressed air supply device 36 in accordance with the weight of the sediment deposited in the hose 16, transfer from a deep water depth and long distance transfer can be performed.

FIG. 4 is a time chart showing a valve operation different from the valve operation shown in FIG. 3 in the embodiment of the apparatus for transferring sediment according to the present invention shown in FIG.

The operation shown in FIG. 4 differs from the operation shown in FIG. 3 in the following points. First, in the second operation mode, the first pressure reducing valve 26 remains open, and the first discharge valve 38 remains closed. In the fourth operation mode, the second pressure reducing valve 28 is kept open,
The second discharge valve 40 remains closed.

In such a valve operation, in the second operation mode, the first tank 22 is still in the vacuum generating device 30.
And the compressed air is supplied to the hose 16 on one end side, so that the sediment deposited in the hose 16 is sucked by the negative pressure of the first tank 22 and pushed up by the compressed air. . Therefore, the sediment deposited in the hose 16 is more reliably transferred into the first tank 22.
Similarly, the sediment in the hose 16 is reliably transferred to the second tank 24 in the fourth operation mode.

In the embodiment shown in FIGS. 1 to 3, the first and second tanks 22 and 24 are used, but it is also possible to use only one tank. In such a case, it can be easily understood that an operation may be performed so that the sedimentary sediment is transferred to the tank and the sedimentary sediment in the tank is discharged alternately.

FIGS. 5A and 5B show another example of the earth and sand suction unit shown in FIG. 1, wherein FIG. 5A is an external perspective view of a main part, and FIG. 5B is a longitudinal sectional view. The earth and sand suction part 70 shown in FIG. 5 is a substantially box body having neither a front surface nor a bottom surface. The sediment can be sucked and transferred without the necessity of moving the soil suction unit 70 up and down while moving the tracked vehicle 50 forward.

FIG. 6 shows still another example of the earth and sand suction part of the embodiment shown in FIG. 1, (a) is a longitudinal sectional view, and (b)
(A) is a view on arrow A, and (c) is a view on arrow BB in (b).

The earth and sand suction unit 72 shown in FIG. 6 has a hydraulic motor 76 and a gear mechanism 78 on the upper surface plate of a substantially box 74 having neither a front surface nor a bottom surface. The two rotators 80, 80 provided in the substantially box 74 are driven to rotate. Here, the hydraulic motor 76 is appropriately driven by high-pressure hydraulic oil supplied from a hydraulic pump mounted on the tracked vehicle 50 or high-pressure hydraulic oil supplied from the ground. The rotating bodies 80, 80 are rotated in opposite directions to each other, and are provided with vanes 80a, 80a,... Having curved surfaces, and the sediment is collected by the vanes 80a, 80a. Opening 74a with which 16 communicates
Acts to feed into.

In the sediment suction unit 72 shown in FIG. 6, the sediment deposited by the blades 80a is crushed and collected at the center of the sediment suction unit 72, so that the hard sediment can be sucked and transferred. In addition, a wide area can be dredged at a time.

Further, another embodiment of the present invention will be described with reference to FIG. FIG. 7 is a configuration diagram of another embodiment of the underwater sediment transporting apparatus of the present invention. 7, the same members as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.

The other embodiment shown in FIG. 7 is different from the embodiment shown in FIG. 1 in that a tank is not used and a hose functions as a tank. The configuration will be described below. The other end of the hose 16 is branched into two, one of which is connected to the vacuum generator 30 via the pressure reducing valve 82 and the trap 84. The other is a discharge valve 8
6 and is communicated with the earth and sand storage tank 42. And
The other end of the compressed air supply hose 16, one end of which is open to the hose 16, is connected to a compressed air supply device 36 via a compressed air supply valve 64. The trap 84
Is to prevent sediment, water and the like from entering the vacuum generator 30.

In this configuration, first, the earth and sand suction valve 60 and the pressure reducing valve 82 are opened, and the compressed air supply valve 64 is opened.
By closing the discharge valve 86, the pressure inside the hose 16 becomes negative, and the sediment deposited is sucked and transferred into the hose 16 from the soil suction unit 14. Next, the sediment suction valve 60 and the pressure reducing valve 82 are closed, and the compressed air supply valve 64 and the discharge valve 86 are closed.
Is opened, the sediment deposited in the hose 16 is pushed up by the compressed air and transferred to the sediment storage tank 42 through the discharge valve 86.

The other embodiment includes a step of transferring the sediment deposited in the hose 16 to the hose 16 and a step of transferring the sediment deposited in the hose 16 to the sediment storage tank 42, and the valve operation thereof is simple. . Further, the structure is greatly simplified than that shown in FIG. 1, and is suitable for small-scale dredging and the like. When the sediment is transported over a long distance, the hose 16 becomes a long distance, the amount of sediment stored in the hose 16 is large, and a large amount of sediment can be processed. Note that the processing capacity depends on the length and diameter of the hose.

Still another embodiment of the present invention will be described with reference to FIG. FIG. 8 is a configuration diagram of still another embodiment of the submerged sediment transporting apparatus of the present invention. 8, the same members as those in FIG. 1 are denoted by the same reference numerals, and redundant description will be omitted.

The other embodiment shown in FIG. 8 is different from the embodiment shown in FIG.
4 in that an auxiliary valve 90 is provided in parallel. The auxiliary valve 90 may be composed of, for example, a series body of a flow control valve 92 and an open / close valve 94, and may have a flow control function and an open / close function. When the auxiliary valve 90 is opened, a small amount of compressed air is supplied to one end of the hose 16.

In this alternative embodiment, the auxiliary valve 90 is opened while the sediment suction valve 60 is opened and the other end of the hose 16 is sucked, and the sediment is sucked and transferred through the hose 16. Thus, a small amount of compressed air is supplied to one end of the hose 16. The mixing of the compressed air improves the flowability of the sediment, and the hose 1
6, the suction transfer of the sediment is improved. In addition, the air lift effect of the compressed air mixed into the sediment works to assist the suction and transfer of the sediment. Therefore, while the sediment is sucked and transferred through the hose 16 (that is, the first sediment in the description of FIG. 1).
In the third and third operation modes, the auxiliary valve 90 can be opened at the end of the period in which the transfer speed is decreasing to prevent the transfer speed from decreasing.

If the amount of air sucked by the vacuum generator 30 is larger than the amount of air supplied by opening the auxiliary valve 90, the hose 1 is opened even when the auxiliary valve 90 is opened.
The inside of 6 becomes negative pressure. Therefore, the auxiliary valve 90 may be opened at all times during suction transfer of the sediment to make the air lift effect work. However, in order to set a large negative pressure in the hose 16, the auxiliary valve 90 may be closed during the beginning of the period during suction transfer of the sediment and sediment, and may be opened during the rest except the beginning of the period. .

In the above embodiment, the means for creating a negative pressure in the hose 16 is not limited to the means using the vacuum generator 30, but any means may be used as long as the inside of the hose 16 can be made a negative pressure. Also, the first tank 22 and the second tank 24
The means for discharging the deposited sediment transferred into the tank to the sediment storage tank 42 or the like is not limited to the means using compressed air, and may be appropriately performed by mechanical means. In addition, the number of tanks
The number is not limited to that of the embodiment, and may be three or more.

In the above embodiment, the sediment suction unit 14
Is provided on the tracked vehicle 50 capable of self-running on the water bottom, so that dredging of a culvert channel or the like is also possible. However, the submerged sediment transporting device of the present invention is not limited to the one in which the sediment suction unit 14 is disposed on the endless track vehicle 50, and the arm 1 disposed on the barge 10
The earth and sand suction part 14 may be provided at the end of the second.

[0041]

As is apparent from the above description, the apparatus and method for transferring sediment according to the present invention have the following special effects.

[0042] In the submerged sediment transfer apparatus according to the first aspect, the sediment sucked and transferred into the hose by suction from the other end can be pushed up by the compressed air supplied from one end into the hose. Therefore, dredging of a deep water bottom and long-distance transfer by a hose can be performed with a simple configuration. Moreover, the pressure of the compressed air may be appropriately set according to the water depth and the transfer distance.

According to a second aspect of the present invention, the sediment is sucked and transferred to the tank through the hose by the negative pressure of the tank to which the other end of the hose communicates, and the sediment in the hose is transferred. When the transfer speed of the hose is reduced, the sediment in the hose is pushed up to the tank by the compressed air supplied from one end of the hose. In this case, dredging work and the like can be performed on a deeper water bottom.

According to the third aspect of the present invention, the sediment in the other tank is suctioned while the sediment is being transferred to one of the two tanks by using two tanks. Since it is discharged, the sediment can be efficiently transferred from the bottom of the water by alternately using it.

Further, in the apparatus for transferring sediment deposited on a water bottom according to claim 4, since the deposited sediment is first sucked into the hose and then discharged from the hose, no tank or the like is required, and the structure is not required. It becomes very simple.

According to a fifth aspect of the present invention, there is provided a water bottom sediment transporting apparatus, wherein a small amount of compressed air supplied from one end of the hose is mixed to improve the fluidity of the sediment or the air lift effect, so that the inside of the hose is improved. The transfer of the sediment is facilitated, dredging of the deeper water bottom becomes possible, and the speed at which the sediment is transferred is increased, so that the work can be speeded up and the work efficiency is improved.

Further, in the method of transferring sediment according to the sixth aspect, the inside of the hose is sucked from the other end, the sediment is sucked and transferred into the hose from one end, and compressed air is supplied to one end. Since the compressed air pushes up the sediment in the hose to the other end side, the method of the present invention can transfer the sediment at a deeper water bottom and dredging the deeper water bottom, as compared with the conventional method using only suction. Etc. can be performed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of one embodiment of a submerged sediment transporting apparatus of the present invention.

2A and 2B show a sediment suction unit in FIG. 1, wherein FIG. 2A is a longitudinal sectional view and FIG. 2B is an external perspective view of a main part.

FIG. 3 is a time chart showing the operation of the valve in FIG. 1;

4 is a time chart showing a valve operation different from the valve operation shown in FIG. 3 in the embodiment of the apparatus for transferring sediment according to the present invention shown in FIG. 1;

5 shows another example of the earth and sand suction part shown in FIG. 1, and (a)
1 is an external perspective view of a main part, and FIG. 1B is a longitudinal sectional view.

FIGS. 6A and 6B show still another example of the earth and sand suction part of the embodiment shown in FIG. 1, wherein FIG. 6A is a longitudinal sectional view, and FIG.
It is an arrow view, and (c) is a BB sectional arrow view of (b).

FIG. 7 is a configuration diagram of another embodiment of the underwater sediment transporting apparatus of the present invention.

FIG. 8 is a configuration diagram of still another embodiment of the submerged sediment transporting apparatus of the present invention.

FIG. 9 is a configuration diagram of an example of a conventional underwater sediment transporting apparatus.

[Explanation of symbols]

 14, 70, 72 Sediment suction unit 16 Hose 18 First suction valve 20 Second suction valve 22 First tank 24 Second tank 26 First decompression valve 28 Second decompression valve 30 Vacuum generator 32 First pressurization valve 34 First 2 pressurizing valve 36 compressed air supply device 38 first discharge valve 40 second discharge valve 42 sediment storage tank 60 sediment suction valve 62 compressed air supply hose 64 compressed air supply valve 82 pressure reducing valve 86 discharge valve 90 auxiliary valve 92 flow control valve 94 On-off valve

Claims (6)

[Claims] 1. An underwater sediment transporting device in which one end of a hose communicates with a sediment suction unit for covering sediment on the bottom of the water, and the sediment is transported in the hose by suction from the other end of the hose. An earth and sand suction valve is interposed in the hose near the suction part, and one end of a compressed air supply hose is connected to the other end near the valve, and the other end of the compressed air supply hose is compressed through a compressed air supply valve. An underwater sediment transfer device, characterized in that it is connected to an air supply device. 2. The apparatus according to claim 1, wherein the other end of the hose communicates with a tank via a suction valve, and the tank communicates with a vacuum generator via a pressure reducing valve. The suction valve, the suction valve and the pressure reducing valve are opened to suck and transfer the deposited sediment from the sediment suction unit into the tank.Furthermore, the sediment suction valve is closed and the compressed air supply valve is opened, and the compressed air in the hose is opened by the compressed air. An apparatus for transferring sediment to the bottom of the water, wherein the sediment is transferred to the tank. 3. The apparatus for transferring sediment according to claim 1, wherein the other end of the hose is branched into two parts, a first part and a second part.
The first and second tanks are respectively connected to the first and second tanks via suction valves, and the first and second tanks are connected to the vacuum generator via the first and second pressure reducing valves, respectively. And opening the suction valve and the pressure reducing valve related to one of the tanks to suction-transfer the deposited sediment into the one tank from the sediment suction unit, further closing the sediment suction valve and opening the compressed air supply valve. The sediment in the hose is transferred to the one tank by compressed air, and the sediment in the other tank is discharged while the sediment is transferred to the one tank. A submerged sediment transfer apparatus, wherein said sediment is alternately transferred to a tank. 4. The submerged sediment transfer device according to claim 1, wherein the other end of the hose is branched into two, one of which is connected to a vacuum generator via a pressure reducing valve, and the other of which is provided with a discharge valve, The sediment suction valve and the pressure reducing valve are opened, the sediment is sucked and transferred from the sediment suction part into the hose, and further, the sediment suction valve is closed, and the compressed air supply valve and the discharge valve are opened to open the compressed air supply valve and the compressed air. An underwater sediment transporting device configured to transfer and discharge sediment in a hose. 5. An apparatus for transferring sediment according to claim 1, further comprising an auxiliary valve having a flow rate adjusting function and an opening / closing function in parallel with said compressed air supply valve. While the sediment transports through the hose, the auxiliary valve is opened during the remainder except at the beginning or at the base to supply a small amount of compressed air into the hose. A submerged sediment transfer apparatus characterized in that it is configured to assist the transfer of sediment in the inside. 6. One end of a hose is communicated with a sediment suction part for covering sediment on the bottom of the water, the other end of the hose is sucked, and a sediment suction valve is interposed in the hose near the sediment suction part. One end of a compressed air supply hose is communicated to the other end near the other end, the other end of the compressed air supply hose is communicated to a compressed air supply device via a compressed air supply valve, and the sediment suction valve is opened to open the hose. The sediment suction is transferred from the sediment suction unit through the hose by suction from the other end, and the sediment suction valve is closed and the compressed air supply valve is opened to transfer the sediment in the hose by compressed air. A method of transferring sediment to the bottom of the water characterized by the following.