JPH0377893B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a slurry mud treatment device.

BACKGROUND ART In dredging and muddy construction, large amounts of slurry mud are generated, and in recent years, how to efficiently dispose of this mud has become a problem. Conventionally, in processing this type of mud, there has been a method in which the mud stored in a reservoir or the like is transported via a pipe to a predetermined dumping site, and a solidifying agent is added to the mud during transportation. As a device for this purpose, a discharge pipe that is grounded on the discharge side of the pump that sucks the mud is equipped with a jetting device that spouts the solidification material into the inside of the discharge pipe, and an agitation device is also installed inside the discharge pipe, and the mud is mixed in the discharge pipe. A method is known in which a solidifying material is added, mixed and stirred, and then discharged to a predetermined disposal site (see, for example, Japanese Patent Laid-Open No. 179197/1983).

By the way, the water content of mud is not constant and changes gradually. Therefore, even if mud is treated with the above-mentioned equipment, if the water content ratio of mud is high, the discharge flow rate will be large, and as a result, the mud and solidification material will be separated. The mud is discharged without being sufficiently mixed, and conversely, when the water content of the mud is low, the discharge flow rate becomes small, causing problems such as the mud clogging the transport pipe.

This invention relates to an improvement on the conventional device as described above, and is configured to discharge mud mixed with a solidifying agent at a constant flow rate regardless of the water content ratio, thereby ensuring that the mud and solidifying agent are sufficiently mixed. It is an object of the present invention to provide a mud treatment device that can mix mud into mud and prevent clogging of transport pipes.

That is, the present invention is characterized in that, in the conventional apparatus, a quantitative discharge device is provided in the discharge pipe on the downstream side of the stirring device.

An embodiment shown in the drawings will be described below.

FIG. 1 shows the overall state of use of this device of the invention, in which slurry-like mud generated by dredging work etc. is temporarily stored in a reservoir 27, and while it is being processed by the device of the invention, a depressed area near the reservoir 27 is being treated. This is what is being discharged on 28th.

The processing device 1 is mounted on a heavy crawler truck 3 that integrally pulls the power supply vehicle 2.
As shown in FIG. 2, it is equipped with a pump 4, a suction hose 7 having a strainer 6 is connected to a suction pipe 5 connected to the suction side, and a discharge pipe 8 connected to the discharge side is connected to a suction hose 7. A nozzle pipe 10 constituting a solidifying material ejecting device is inserted into the bent pipe portion 9. The nozzle pipe 10 has bearings 12 provided on the bent pipe portion 9 and the fuselage frame 11, respectively.
13, a gear 14 fixed to the nozzle pipe 10, and a motor 15 fixed to the fuselage frame 11.
The nozzle pipe 10 is adapted to be rotated by meshing with the gear 16 of the nozzle pipe 10. A gas transport pipe 17 is connected to the end of the nozzle pipe 10 via a swivel joint 16', and the pipe end is connected to a compressor 18. A blow tank 19 is provided in the middle of the gas transport pipe 17, and the blow tank 19 and the first and second hoppers 20, 21 are connected by a solidifying material supply pipe 23 provided with a mixer 22. ing.
The first and second hoppers 20 and 21 accommodate different types of powder solidifying materials, such as coal ash, cement, etc., and the two types of solidifying materials are mixed by a mixer 22. The air is then supplied to the blowing tank 22. One type of solidifying agent may be used, or if two types are used, they may be directly supplied to the blowing tank 22 without being mixed.

As shown in FIG. 3, the discharge pipe 8 of the nozzle pipe 10
A stirring blade 24 constituting a stirring device is fixed to the part inserted into the inside, and this stirring blade 24 is formed in an L shape, and near the base of the stirring blade 24, the nozzle pipe 10
An ejection pipe 25 is provided in the. The above configuration is almost the same as the conventional one, and in the present invention, a screw conveyor 26 constituting a quantitative discharge device is further provided downstream of the stirring blade 24 in the discharge pipe 8, and this screw conveyor 26 is connected to the discharge pipe 8. The shaft 27 is integrally connected to the nozzle pipe 10 and rotates together with the nozzle pipe 10. The screw conveyor 26 may be separate from the nozzle pipe 10 and may be provided with its own power source.

Next, the operation of the above embodiment will be explained.

Slurry mud in the reservoir is fed by a pump 4 from a strainer 6 to a discharge pipe 8 via a suction hose 7 and a suction pipe 5. On the other hand, Compressa 18
Air is supplied to the discharge pipe 8 via the air transport pipe 17 and the nozzle pipe 10, and the powder solidified material in the blowing tank 19 is transported by air, and this solidified material is delivered to the ejection port 25 of the nozzle pipe 10. It is ejected into the discharge pipe 8 through the. At that time, the solidifying material is stirred by the stirring blade 24.
The movement of the mud in the flow direction is blocked by hitting the mud.

The ejected solidified material is stirred and mixed into the mud by the rotation of the stirring blade 24, and this mud is further transferred at a constant flow rate by the screw conveyor 26 and discharged into the depression 28 from the discharge port at the tip of the discharge pipe 8, where it is stored over time. It solidifies and becomes the ground.

In the above embodiment, a processing apparatus that adds a solidification material made of powder has been described, but the technology of the present invention can also be applied to a processing apparatus that adds a solidification material made of a liquid. Note that it is more preferable to use a powder solidifying material than to using a liquid solidifying material in terms of reduction in the amount of solidifying material, processing efficiency, and the like.

As described above, according to the present invention, since the quantitative discharge device is provided in the discharge pipe, the mud mixed with the solidifying agent is discharged at a constant flow rate, and therefore, the influence of changes in the water content ratio of the mud Mud with sufficient solidification agent mixed in is discharged without being exposed to
In addition, clogging of the discharge pipe is prevented, and mud treatment can be carried out smoothly.

[Brief explanation of drawings]

Fig. 1 is an overall schematic diagram showing the state of use of the device of the present invention, Fig. 2 is a side view showing the main parts of the same device;
FIG. 3 is a sectional view of the discharge pipe. 1...Mud treatment device, 4...Pump, 8...Discharge pipe,
10... Nozzle pipe (spraying device), 24... Stirring blade (stirring device), 26... Screw conveyor (quantitative discharge device).

Claims (1)

[Claims] 1. In a mud treatment device in which a discharge pipe connected to the discharge side of a pump that sucks slurry mud is provided with a jetting device for spouting a solidification material therein, and a stirring device is provided in the discharge pipe, A slurry mud treatment device, characterized in that a quantitative discharge device is provided downstream of the stirring device.