JPS5919213B2 - Sludge dredging method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sludge dredging method for limited locations where regular sludge dredging is required, such as riverbeds, the seabed of navigation channels in ports, or the seabed of canals. The object of the present invention is to provide a method for dredging sludge without damaging the original ground or damaging underground facilities.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

Reference numeral 1 denotes a track which is an example of a guide body, and is laid on the raw ground 2 of a riverbed or seabed in a place where periodic sludge dredging is required.

In its installation, a large number of blocks 3 are fixed to the original ground 2 by driving foundations 4, and a track 1 is installed between these blocks 3.
This is done in such a way that it is not affected by ocean currents or river currents.

5 is a sludge dredging device, which has a pair of wheels 6, one on the front and one on the left and one on the left.
By placing the wheels 6 on the track 1, the vehicle can travel on a fixed route.

Above the traveling platform 7 is an underwater engine 8 which is an example of an engine as a power source, an oxygen tank 10 that supplies oxygen to the underwater engine 8 via a pipe 9, and a pipe 11 for exhaust gas generated by the underwater engine 8. An exhaust gas tank 12 is provided, and one valve 13 in both pipes 9 and 11 is provided.
, 14 are provided, and the wheels 6 are driven by an underwater engine 8.

A pump section 17 consisting of a sludge transfer pump 15 and its driving device 16 is provided at the front portion of the traveling platform 7, and a sludge collecting section 18 which is extendable and retractable is provided at the front section thereof.

This sludge collecting section 18 has a rear end connected to the sludge transfer pump 15t.
A bellows cylindrical body 20 that communicates with the intake port 19 and forms the intake port 19, a lid body 21 that opens and closes the intake port 19, a hydraulic cylinder 22 that raises and lowers this lid body 21 to open and close it, and the bellows cylindrical body a hydraulic cylinder 23 that expands and contracts 20;
It is composed of a pedestal 24 that guides the expandable bellows cylinder 20 and a hydraulic unit 25 including a hydraulic pump that controls both hydraulic cylinders 22 and 23. The hydraulic cylinder 22 is connected to the front end of the bellows cylinder 20. In addition to being fixed, a hydraulic cylinder 23 is attached between the front end of the bellows cylinder body 20 and the traveling base 7 so as to be able to swing relative to each other.

Note that the frame 24 is connected to the intake port 1 of the extended bellows cylinder body 20.
The tip is bent down so that 9 is located at the bottom.

Reference numeral 26 denotes a transfer pipe, the lower end of which communicates with the discharge port of the sludge transfer pump 15, and the upper end leading to the carrier ship 27.

Reference numeral 28 denotes a dredger, which allows the sludge dredging device 5 to be raised and lowered by a crane 29 mounted thereon.

The vicinity of the lower end of the transfer pipe 26 and the exhaust gas tank 12 are communicated through a pipe 31 having a valve 30.

Reference numeral 32 indicates a sludge layer, 33 indicates sludge being transported, and 34 indicates exhaust gas in the transfer pipe 26.

When dredging work is to be carried out, the dredging device 5 is transported to the site by a dredger 28 and sunk into the sludge layer 32 by a crane 29.

As a result, it is placed on the track 1 that has been laid in advance via the wheels 6. At this time, the bellows cylinder body 20 is contracted as shown by the solid line 1 in FIG. 2, and the lid body 21 is in the closed position 1. There it is.

From this state, first, by extending the hydraulic cylinder 22, the lid body 2
1 to open the intake port 19, and then extend the hydraulic cylinder 23 to extend the bellows cylinder body 20 in the sludge layer 32 as shown by the imaginary line in FIG.

As a result, one drop of sludge is taken into the bellows cylinder body 20 through the intake port 19.

The hydraulic cylinder 22 is contracted when the bellows cylinder body 20 is at its maximum extension, and the lid body 21 is moved down to close the intake port 19.

Then, the bellows cylinder body 20 is contracted by contraction of the hydraulic cylinder 23.

As a result, the sludge taken into the bellows cylinder body 20 is gradually guided to the pump section 17.

Then, the sludge 33 is driven by the drive 1 of the sludge transfer pump 15.
is fed into the transfer pipe 26.

At this time, through the opening of the valve 30, the exhaust gas 34 stored in the exhaust gas tank 12 is sent into the transfer pipe 26 through the pipe 31, and the sludge 33 is lifted by the exhaust force of the sludge transfer pump 15. It is discharged in a state in which it is used in combination, and sent to 271 carrier ships.

By repeating such operations, the sludge 33 can be collected and discharged one by one. However, the position of the dredging device 5 can be moved by operating the wheels 6 by the underwater engine 8, thereby removing the sludge in the sludge layer 32. in a state submerged in and orbit 11
You will be guided along a set route.

The engine is preferably a submersible engine 8 such as a diesel engine, and oxygen in an oxygen tank 10 is used as the oxygen source, and its exhaust gas is stored in the exhaust gas tank 12) and used for the lift described above.

Excess exhaust gas is released. Note that it is preferable that the inside of the bellows cylinder body 20 be of a double bellows type so that the whole bellows can be contracted.

The dredging device 5 is controlled by a remote control method from the dredger 28, but as another method, a linear motor method can be adopted by applying salt picoding to the track 1, passing electricity or installing a magnet. It is.

FIG. 5 shows a cable 35, which is another example of a guide body, being laid, and a guided body 36 guided by this cable 35.
Another embodiment will be shown in which a caterpillar device 37 is provided in place of the wheels t, and a caterpillar device 37 is used instead of the wheels t.

Further, FIG. 6 shows another embodiment in which the cable 35 is installed by a post 38.

The constant traveling route formed by guide bodies such as the track 1 and the cable 35 as described above can be achieved by providing one constant traveling route 40 in a loop shape in the canal 39 as shown in FIG.
They may be arranged in a meandering pattern as shown in the figure.

In the previous embodiment, the transport ship 27 and the dredger 28 were used, but it is also possible to raise and lower the dredging device 5 by, for example, a crane on the embankment, and also to run a sludge transport vehicle on the embankment.

As described above, according to the present invention, a loop or meandering guide is attached to the riverbed or seabed in areas where periodic sludge dredging is required, and sludge is dredged along the guide. Since the dredging vehicle is run, the dredging work can be carried out efficiently without damaging the original ground or various facilities buried underground. It can be dredged thoroughly.

Further, on the traveling truck, there is provided a bellows cylindrical body whose rear end communicates with the sludge transfer pump t and whose front end forms an intake port, a lid body for opening and closing the intake port, and a lid body that is raised and lowered to open and close the intake port. Equipped with a mud collecting section having a pair of left and right hydraulic cylinders and a pair of left and right hydraulic cylinders that expand and contract the bellows cylinder body,
Since the sludge taken into the sludge collecting section is discharged from the sludge transfer pump t through the transfer pipe, the sludge can be taken in with almost no disturbance.
It is possible to prevent water from becoming cloudy due to sludge floating up, and to discharge highly concentrated sludge.

[Brief Description of the Drawings] Figs. 1 to 4 show an embodiment of the present invention, in which Fig. 1 is a side view, Fig. 2 is a side view of main parts, Fig. 3 is a plan view of the same, and Fig. 4 is a side view of the main part. 4
FIG. 5 is a rear view, FIGS. 5 and 6 are rear views showing an example of separate husband and wife, and FIGS. 7 and 8 are schematic plan views showing an example of a constant travel route for both husband and wife. 1... Track (guide body), 2... Raw ground, 5... River... Sludge dredging device, 8... Underwater engine, 17... Pump Section, 18...Sludge collection section, 26...Transfer pipe, 32...
- Sludge layer, 35...Cable (guide body).

Claims (1)

[Claims] 1. A guide body is attached in a loop or meandering manner to areas where sludge dredging is required periodically. 1. A guide body is attached in a loop or meandering manner, and a sludge transfer pump is mounted at the rear end of a traveling trolley that runs along this guide body. a bellows cylinder that communicates with the front end and forms an intake port; a lid that opens and closes the intake; a pair of left and right hydraulic cylinders that raise and lower the lid to open and close the lid; The sludge collected in the sludge collecting section is discharged via the transfer pipe by the sludge transfer pump, and is also discharged from the engine mounted on the traveling truck. A sludge dredging method characterized in that the discharged exhaust gas is sent to the transfer pipe.