JPH03169924A - Dredged material discharge device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a discharging device used for discharging sludge, soft mud, etc. deposited on the seabed, etc. [Prior Art] Conventional The sludge dredged by a dredger was once loaded into a purge packan (steel N) installed on the dredger, transported by water, and unloaded at the quay using a truck crane. [Problems to be Solved by the Invention] However, the method using the conventional dredged material discharging device described above could only transport the dredged material intermittently and inefficiently.
Additionally, when transporting sludge to the purge bagcan or discharging it from the purge packcan, the sludge would fall or scatter during transport, contaminating the surrounding area. [Means for Solving the Problems] In order to solve the above technical problems, the dredged material discharging device of the present invention includes a storage tank for receiving dredged materials and a scree for discharging the dredged materials from the storage tank. It comprises a conveyor, and a moving device installed in the storage tank to move the dredged material in the storage tank to the insertion position of the intake opening. This screw conveyor is installed so as to be tiltable so that the intake opening at the tip of the casing can be inserted into the storage tank and taken out from the storage tank.

[Operation] The mud-like dredged material dredged from the seabed or the like is put into a storage tank, then taken out by a screw conveyor, and sent to a mud collecting pond via, for example, a centrifugal bomb, an ejector, and a discharge pipe.

In the storage tank, the dredged material is moved by the moving device to the insertion position of the intake opening of the screw conveyor, so that the dredged material in the storage tank can be efficiently taken into the screw conveyor and discharged.

In the present invention, when a failure occurs or a blockage occurs in various devices such as a screw conveyor, the screw conveyor can be tilted to be pulled out from the waste reservoir and repaired.

[Example] Examples will be described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a dredged material discharging device according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of the Nl diagram.
FIG. 3 is a plan view, and FIG. 4 is a right side view of FIG. 1. Note that although FIG. 1 shows a cross section taken along line I-1 in FIG. 3, only the vibrating sieve is not taken as a cross section.

Reference numeral 10 is a storage tank, the upper surface of which is open.

A screw conveyor 12 includes a cylindrical casing 14, a screw l6 inserted into the cylindrical casing 14, and a drive device 18 for driving the screw 16. An inlet device 20 is attached to the intake opening at the tip of the casing 14 . This inlet device 20 is for scraping dredged material into the screw conveyor 12, and includes a large-diameter screw 22 connected to the tip of the screw 16, and a screw blade tip extending in a direction parallel to the axis of the screw 22. It is equipped with a scraping blade 24 provided in a portion.

Reference numeral 26 indicates a discharge port provided at the upper part of the cylindrical casing 14.

In this screw conveyor 12, the tilting support mechanism 28 is installed so that it can be tilted freely. This tilting support mechanism 28 includes a bracket 30 fixed to the screw conveyor 12, a base 32 that pivotally supports the lower end of the bracket 3o, and a hydraulic cylinder 3 provided between the bracket 3o and the base 32.
It is equipped with 4. The lower end of the hydraulic cylinder 34 is pivotally connected to the base 32 by a pin 36, and the tip of the rond is pivotally connected to the bracket 3oc by a pin 38. 4o indicates a power cylinder. This hydraulic cylinder 3
4, the screw conveyor 12 is rotated about the connecting shaft 42 between the bracket 3o and the base 32 to the horizontal position shown by the two-dot chain line in the figure, and the tip of the screw conveyor 12 is moved away from the storage tank 1o. being extracted.

In this horizontal position, when the cylinder 34 is actuated to protrude the rod, the screw conveyor 12 is moved as shown by the solid line in the figure.
4 (and the inlet device 2 connected to the lower end)
0) assumes a posture inserted into the storage room 1o.

The dredged material in the storage tank 10 is transferred to the inlet device 2 at the tip of the inserted screw conveyor 12.
A moving device 4 for moving as if scraping toward 0.
4 is provided. In this embodiment, this moving device 44
bearings 46 and 48 provided on the side walls 10a and 10b of the storage tank 10, a rotating shaft 50 whose both ends are pivotally supported by the bearings 46 and 48, a blade 52 fixed to the circumferential surface of the rotating shaft 50,
54, a drive device 56 for rotationally driving the rotating shaft 50 is provided. The blades 52 and 54 are provided in the helical direction of the rotating shaft 50;
4 are in opposite directions to each other, and when the rotating shaft 50 is driven to rotate, the dredged material in the vicinity of the side walls 10a and 10b moves toward the center of the storage KW10. Note that when the rotating shaft 50 is rotated in the opposite direction to the raking direction, #! 10 can be stirred.

In this embodiment, the rotating shafts 50 are arranged on both sides of the inlet device 20, as shown in FIG.

In the upper part of the storage tank 10, the screw conveyor 12
A vibrating screen 58 is provided in a portion other than the circulation area. This shaking wJ sieve 58 is equipped with two meshes 58a and 58b, and the upper mesh 11 5 8 a is coarser than the lower mesh 58b. The nets 58a and 58b are arranged at an angle, and guides 6o and 6 are provided at the lower ends in the direction of the inclination.
2 is provided and is configured to drop the netted items into the pit 64. Note that 66 indicates a rail. Shake MjJB
58 is movable on the rail 66 by its wheels 58c, and when the screw conveyor 12 is rotated to assume a horizontal position, the vibrating sieve 58 moves to the left in FIG. 1 as indicated by arrow A. be done.

As shown in FIGS. 3 and 4, the screw conveyor l
The second discharge port 26 is connected to a pressurizing bomb 70 via a pipe 68. 69 is a flow meter, and 71 is a shaft seal bomb. A check valve 72 and a gate valve 7 are provided at the discharge port of the pressurizing bomb 70.
4, an ejector 76 is connected to the gate valve 74, and a discharge pipe 78 is connected to the ejector 76. 76a indicates a pressurized air supply port.

In the dredged material discharging device configured in this manner, the dredged material dredged from the seabed or the like is first thrown into the vibrating sieve 58.

The sludge that has passed through m58a and 58b of the vibration iffi 58 is immersed in the storage 4!10 and is stored therein. This savings 4
′! The dredged material in the dredged material 10 is moved toward the inlet device 20 by the moving device 44 and taken into the screw conveyor 12 from the inlet device 20. The air then ascends within the screw conveyor 12, is sent from the discharge port 26 to the pressurizing bomb 70, is then supplied with pressurized air at the ejector 76, and is forcedly sent through the discharge pipe 78 towards the mud collecting pond. . In addition, if the distance from this dredged material discharge device to the mud collection pond is long, a relay bomb should be placed as appropriate to pump the dredged material. If a failure or blockage occurs in the screw conveyor 12 or the inlet device 20, the hydraulic cylinder 34 is operated to rotate the screw conveyor 12 to the horizontal position shown by the two-dot chain line in FIG. As described above, when rotating to this horizontal position, the vibrating screen 58 is retracted to the left in FIG. 1. When the screw conveyor 12 is placed in a horizontal position, the tip portion of the screw conveyor 12 and the inlet device 20 are pulled out from the storage tank 10, so that the screw conveyor 12 and the inlet device 20 can be easily and quickly repaired. can.

In the device of this embodiment, as is clear from FIG. 1, the drive device 56 of the moving device 44 is installed outside the storage tank 10, making it easy to replenish the drive device. Further, the inlet device 20 has its screw 22 connected to the screw conveyor 1.
The inlet device 20 is connected to the screw 16 of No. 2 and driven by the drive device l8 of the screen conveyor l2, and the structure of the inlet device 20 is relatively simple. Furthermore, since the drive device of this inlet device 20 is arranged outside the storage tank, it is easy to replenish the drive device. In addition, if foreign matter enters the storage container, it can be removed as follows. That is, water is poured into the storage tank 10 and stirred to dilute the muddy water, and finally the muddy water is drained with a submersible bomb. Foreign objects can be extracted from a manhole (not shown) provided in the storage tank 10. [Effects] As described above, according to the dredged material discharging device of the present invention, when a failure or rA blockage occurs in the screw conveyor etc., the screw conveyor is placed in a horizontal position and the tip of the screw conveyor is removed from the dam. It can be extracted to repair the screw conveyor, inlet device, etc. Therefore, repair of the equipment can be performed extremely easily and quickly, and the operating efficiency of the equipment is improved. It is also said that it is possible to easily lubricate the drive mechanism.

[Brief explanation of the drawing]

FIG. 1 is a vertical sectional view of an embodiment of the device of the present invention, and FIG.
3 is a plan view of the embodiment device, and FIG. 4 is a right side view thereof. 10...Storage tank, 12...Screw conveyor, 20...Inlet device, 28...Tilt support mechanism,
34... Hydraulic cylinder, 44... Moving device, 5
0... Rotating axis, 52.54... Wings, 58
... Vibrating sieve, 64... bits.

Claims (1)

[Claims] (1) A storage tank for receiving dredged material and a screw shaft to which a screw blade is fixed are housed in a cylindrical casing, and the intake opening at the tip of the casing is inserted into the storage tank and the a screw conveyor installed in a tiltable manner so that the intake opening can assume a position where it is pulled out from the storage tank; A dredged material discharge device comprising a moving device for moving dredged material.