JP3813901B2 - Mud concentration or mud pressure propulsion method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waste mud treatment facility in a mud concentration type or mud pressure type propulsion method.
[0002]
[Prior art]
Among the propulsion works that have been ordered and constructed in recent years, the mud concentration type or mud pressure type propulsion works account for the overwhelming majority. In the mud concentration type or mud pressure type propulsion work, the cutting residual soil (mud) generated by the construction is usually transported by a vacuum vehicle or the like, and industrial waste is treated as construction sludge. In recent years, disposal and recycling of this industrial waste has become a resource environment problem, and the construction industry is urgently required to take measures against this problem.
[0003]
[Problems to be solved by the invention]
The mud (waste mud) generated by the mud concentration type or mud pressure type propulsion method is usually disposed by a solidification treatment or a disposal method by separation of mud water and earth and sand.
The former requires a site for the processing plant, and also requires a chemical such as an improving agent for solidification, and there is a problem that the processing cost is expensive.
The latter is a preferable treatment because it can reuse separated soil and dispose of general residual soil and reduce the amount of industrial waste. However, a system to realize this is not established. Absent.
[0004]
The present invention was made based on such a background, and the mud generated by the mud concentration type or mud pressure type propulsion method is separated into muddy water and earth and sand for reuse, and the mud type or mud pressure type propulsion method is used. The main purpose is to provide a sludge treatment facility that can reduce the industrial waste generated in Japan.
[0005]
[Means for Solving the Problems and Effects of the Invention]
The invention described in claim 1 is a continuous receiver tank for continuously sucking up and storing mud produced by mud concentration type or mud pressure type propulsion work, and for continuously sending out mud stored in the continuous receiver tank. And a mud classifier that divides the mud transported by the mud transport means into gravel, sand, soil, etc., the mud classifier includes a vibrating screen having a mesh screen for placing mud, a mesh A mud treatment facility in a mud-type or mud-pressure propulsion method characterized by having a shower device that sprays water on mud on the screen.
[0006]
The invention according to claim 2 is characterized in that the shower device collects the muddy water that has passed through the mesh screen of the vibrating screen, and the circulation that takes out the muddy water accumulated in the adjusted vessel and sprays it on the muddy soil on the mesh screen. The wastewater treatment equipment in the mud concentration type or mud pressure type propulsion method according to claim 1, characterized in that the wastewater treatment equipment includes a shower apparatus.
According to a third aspect of the present invention, the vibrating sieve passes through the primary separating vibrating sieve provided with a relatively coarse mesh screen to which the mud transported from the mud transporting device is applied, and the primary separating vibrating sieve. A mud-type or mud-pressure propulsion according to claim 2, further comprising a secondary separation vibrating screen having a relatively fine mesh screen to which mud collected in the adjustment tank is taken out and given. It is a wastewater treatment facility in the method
[0007]
The invention according to claim 4 is characterized in that the shower device has an injection port that sprays water on the primary separation vibrating screen and an injection port that sprays water on the secondary separation vibrating screen. A mud treatment facility in the mud concentration type or mud pressure type propulsion method according to claim 3.
The invention according to claim 5 is characterized in that the shower device further includes an injection port for sprinkling water on the mud transported by the mud transport device to the mud classifier. It is a wastewater treatment facility in the described mud concentration type or mud pressure type propulsion method.
[0008]
The invention according to claim 6 is a wastewater treatment facility for dividing mud produced by mud concentration type or mud pressure type propulsion work into gravel, sand, soil, etc., and a vibrating screen equipped with a mesh screen on which mud is placed, and a mesh screen It is a wastewater treatment facility in a mud concentration type or a mud pressure type propulsion method characterized by having a shower device that sprays water on the upper mud.
According to the configuration of claims 1 and 6, water is sprayed on the mud put on the mesh screen of the vibrating screen by the shower device, so the gravel and sand in the mud are screened by the vibrating screen, and the fine sand When passing sand or soil through the mesh screen, the mesh screen can be screened without clogging.
[0009]
In the configuration of claim 2, since the shower device is a circulation type shower device that pumps the muddy water stored in the adjustment tank and sprays it on the mesh screen, the muddy water stored in the adjustment tank can be effectively used, and the systematic It can be set as a simple waste mud treatment facility.
In the configuration of claim 3, the vibration sieve is classified into two types for primary separation and secondary separation, and mud produced by mud concentration type or mud pressure type propulsion work can be classified into gravel components and sand components. , Each can be reused.
[0010]
As described in claim 4, when the shower device is configured to spray water on the mesh screen of each vibrating screen, clogging due to earth and sand is less likely to occur in any mesh screen, Can operate continuously for a long time with minimal maintenance.
In particular, as shown in claim 5, by applying water with a shower device to the part of the mud sent out from the mud transport device to the mud classifier, the mud given to the vibrating screen can be loosened and fed to the vibrating screen. The resulting mud spreads well on the mesh screen and is sieved. At that time, clogging of the mesh screen is also reduced.
[0011]
As described above, according to the present invention, the mud classifier used in the mud type propulsion method is used in the mud treatment facility using the mud concentration type or mud pressure type propulsion method, and a shower device is added to the mud classifier. By making such an improvement, the mud produced by the mud concentration type or mud pressure type propulsion work can be divided into gravel, sand, soil, etc., and a waste mud treatment facility with good operation can be provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a system diagram of a mud concentration type or mud pressure type propulsion method according to an embodiment of the present invention. In the mud concentration type or mud pressure type propulsion method, a start shaft 2 is dug from the ground surface 1, and a hole having a predetermined diameter is dug in the ground 3 by the excavator 4 from the start shaft 2. The excavation residue generated by the excavating machine 4 excavating is given to the gravel separating device 5 and the gravel is removed. The removed large gravel is broken by the gravel breaking device 6 and is made fine, and is combined with the excavated residual soil that has passed through the gravel separating device 1, and the mud and gravel are kneaded in the soil mixing device 7. The kneaded waste mud is fed to the waste mud treatment facility 10 according to the embodiment of the present invention, which is installed on the ground surface 1 through the soil discharge mud pipe 8.
[0013]
The mud treatment facility 10 includes a continuous receiver tank 11, a screw feeder 12 as a mud transport device, and a mud classifier 13. The dump truck shown in the figure carries the gravel, sand, etc. separated by the mud classifier 13 for reuse.
In FIG. 2, the more detailed structure of the waste mud treatment equipment 10 is shown. The continuous receiver tank 11 has a vacuum suction device, sucks up mud soil (mud) generated by mud concentration type or mud pressure type propulsion work through the drainage mud pipe 8 (see FIG. 1) by vacuum suction, and stores it. To do.
[0014]
The mud stored in the continuous receiver tank 11 is continuously and quantitatively supplied to the screw feeder 12 by the mud quantitative pouring device 14. The screw feeder 12 sequentially sends the given mud to the mud classifier 13. The mud classifier 13 includes a primary separation vibrating sieve 15 and a secondary separation vibrating sieve 16. The primary separation vibrating screen 15 is provided with a coarse mesh screen 17, and mud is placed on the coarse mesh screen 17, and the mesh screen 17 is vibrated in the lateral direction, so that the Large gravel components remain on the mesh screen 17, and other mud components pass through the mesh screen 17 and fall downward, so that relatively large gravel components are separated.
[0015]
The secondary separation vibrating screen 16 is disposed above the primary separation vibrating screen 15 and has a mesh screen 18 that is relatively thinner than the mesh screen 17 of the primary separation vibrating screen 15. In the vibrating screen 16 for secondary separation, the fine mesh screen 18 is vibrated in the lateral direction, and the sand is separated and taken out from the mud put thereon. The mud component that has passed through the fine mesh screen 18 reaches the mesh screen 17 of the primary separation vibrating sieve 15 and further passes through it and falls downward.
[0016]
An induction rod 19 is also provided for guiding the mud from the outlet of the screw feeder 12 onto the mesh screen 17 of the vibration sieve 15 for primary separation.
Below the mud classifier 13, there is provided an adjustment tank 20 for collecting mud falling through the mesh screen 17. The inside of the adjustment tank 20 is partitioned by a partition plate 21. The partition plate 21 is for separating mud and muddy water in the adjustment tank 20, and the lower part is, for example, a partition plate 21a made of steel plate, and the upper part is, for example, a partition plate 21b made of mesh so that liquid components can pass therethrough. It has become.
[0017]
The mud collected in the adjustment tank 20 is taken out by the secondary processing delivery pipe 22 and discharged from the discharge port 23 onto the mesh screen 18 of the secondary separation vibrating screen 16. A feature of the wastewater treatment facility 10 is that a shower device 24 is provided for pumping up the muddy water accumulated in the adjustment tank 20 and sprinkling it to the vibrating screens 15 and 16 of the mud classifier 13.
That is, the adjustment tank 20 is connected to a pumping pipe 25 for pumping up the accumulated mud water. The pumping pipe 25 is connected to the side where the muddy water partitioned by the partition plate 21 in the adjustment tank 20 is stored. The muddy water pumped out by the pumping tube 25 is jetted from the jet ports 26-30. The injection ports 26 and 27 are injection ports for watering the mud on the coarse mesh screen 17 of the primary separation vibrating screen 15. The injection port 28 is an injection port that sprinkles water on the mud on the guide rod 19 guided from the outlet of the screw feeder 12 to the vibrating sieve 15. The spray ports 29 and 30 are spray ports that spray water on the mud on the fine mesh screen 18 of the vibration sieve 16 for secondary separation.
[0018]
In FIG. 2, 31 is a stirring device for stirring the muddy water in the adjustment tank 20.
In this way, the muddy water on the mesh screens 17 and 18 and the mud mud guided to the vibrating screen 15 from the screw feeder 12 are sprayed so that the mud can be separated well on the mesh screens 17 and 18. become. Further, the mesh screens 17 and 18 are less likely to be clogged.
[0019]
Therefore, the mud produced by the mud concentration type or mud pressure type propulsion method can be divided into gravel, sand, soil, etc. by using a classifier for separating mud produced by the mud type propulsion method.
The relatively large gravel component separated by the primary separating vibrating sieve 15 and the relatively small component separated by the secondary separating vibrating sieve 16, that is, the sand component, can be reused.
[0020]
Further, the muddy water stored in the adjustment tank 20 can be used as a sprinkler for the mud classifier by the shower device 24 as described above, and the muddy water is used as a muddy water to be fed to the cutting blade of the excavator 4 described in FIG. Can be reused.
Next, in the modified embodiment shown in FIG. 3, the mud stored in the continuous receiver tank 11 is sequentially sent to the mud classifier 13 through the mud transport pipe 12a.
[0021]
In addition to the pumping pipe 25, a transport pipe 32 for returning muddy water is connected to the adjusting rod 20, and the upper and lower sides of the continuous receiver tank 11 are routed from the transport pipe 32 through transport branch pipes 32a and 32b for returning mud water. The muddy water can be returned, and the mud in the tank can be diluted with the returned muddy water to provide prior assistance for classification. About another structure, it is the same as that of embodiment described previously.
According to each embodiment described above, there are various effects such as a reduction in industrial waste processing amount and a reduction in the amount of mud material used by reusing mud water, and a reduction in construction cost.
[0022]
The present invention is not limited to the embodiment described above, and various modifications can be made within the scope of the claims.
[Brief description of the drawings]
FIG. 1 is a system diagram of a mud concentration type or mud pressure type propulsion method according to an embodiment of the present invention.
FIG. 2 is a diagram showing a detailed configuration of a waste mud treatment facility according to an embodiment of the present invention.
FIG. 3 is a diagram showing a configuration of a modified example of the embodiment of the present invention.
[Explanation of symbols]
10 Mud disposal equipment 11 Continuous receiver tank 12 Screw feeder (mud transport equipment)
12a Mud transport pipe 13 Mud classifier 15 Vibrating sieve for primary separation 16 Vibrating sieve for secondary separation 17 Coarse mesh screen 18 Fine mesh screen 19 Induction trough 20 Adjustment tank 21 Partition plate 24 Shower device 25 Pumping pipes 26, 27, 28 , 29, 30 Injection port 32 Transport pipe 32a, 32b for returning mud water Transport branch pipe for returning mud water

Claims (6)

A continuous receiver tank for continuously sucking up and storing mud produced by mud concentration or mud pressure propulsion construction;
Mud transport means for continuously sending the mud stored in the continuous receiver tank;
A mud classifier that separates the mud transported by mud transport means into gravel, sand, soil, etc.
The mud classifier includes a vibrating screen equipped with a mesh screen for placing mud,
A wastewater treatment facility in a mud concentration type or mud pressure type propulsion method, characterized by having a shower device that sprays water on the mud on the mesh screen. The shower device
An adjustment tank that collects the muddy water that has passed through the mesh screen of the vibrating sieve;
A mud-concentration or mud pressure propulsion method for removing mud collected in a regulating tank, and a circulating shower device for spraying the mud on the mesh screen. Facility. The vibrating sieve is a primary separating vibrating sieve provided with a relatively coarse mesh screen to which mud transported from a mud transporting device is provided;
3. A secondary separation vibrating screen having a relatively fine mesh screen through which the mud accumulated in the adjustment tank through the primary separation vibrating screen is taken out and applied. Wastewater treatment equipment in the mud concentration type or mud pressure type propulsion method. 4. The mud according to claim 3, wherein the shower device has an injection port for spraying water on the vibrating screen for primary separation and an injection port for spraying water on the vibrating screen for secondary separation. Wastewater treatment equipment in the type or mud pressure type propulsion method. The mud concentration type or mud pressure type according to any one of claims 1 to 4, wherein the shower device further includes an injection port for sprinkling water on the mud transported by the mud transport device to the mud classifier. Waste mud treatment equipment in the propulsion method. A mud treatment facility that divides mud produced by mud concentration or mud pressure propulsion work into gravel, sand, soil, etc.
A vibrating sieve equipped with a mesh screen to place mud,
A wastewater treatment facility in a mud concentration type or mud pressure type propulsion method, characterized by having a shower device that sprays water on the mud on the mesh screen.

Images