JPH0988118A - Fluidizing process machine of plural mixer type - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process machine with which excavated earth can be surely reused, which can rationalize a refilling work without the necessity of conveyance of the excavated earth so as to enhance the working efficiency, and slurrying of the excavated earth and the mixing of the same with a solidifler are carried out separately under an optimum condition which satisfies an object of use of a slurrying mixer or a solidifier mixing mixer so as to prepare fluidized process earth. SOLUTION: At first, excavated earth is carried by a conveyer 2 from an excavated hole to a slurrying mixer 5 into which water is fed by a transfer pump 4 from a water tank 3, and accordingly, the excavated earth and water are agitated by the slurrying mixer 5 so as to obtain slurry which is then shifted into a soldifier mixing mixer 6. Thus, the slurry is mixed with a solidifier by agitation so as to obtain process earth. Thereafter, the process earth is directly sucked up through a process earth conveying pipe line and into a press feed pump 7 for discharging and conveying the process earth from the conveying pipe line 12, and then the process earth is refilled in the excavated hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for fluidizing and reusing excavated soil generated in civil engineering works such as piping work.

[0002]

2. Description of the Related Art Conventionally, regarding fluidization treatment of excavated soil,
Due to legal approval, it is not possible to backfill the excavated hole in the excavated soil as it is.

Therefore, the excavated soil is either disposed of at another place or reused as described below. That is,
As shown in FIG. 1 (b), in the conventional excavated soil treatment system, excavated soil from the excavated hole H is mixed with water in the thaw tank C to be treated, and thereafter, is changed to another hole by the mixer truck T. It is transported, mixed with solidifying material and filled in this hole.

[0004]

However, in the conventional excavated soil treatment system, excavated soil must be transported to another place, and the transportation work is very troublesome.

The present invention was made in anticipation of future deregulation of the legislation in which the excavated soil may be backfilled with the excavated soil, and transportation of the excavated soil is not required. It is intended to provide an excavated soil fluidization treatment device.

[0006]

The present invention will be described with reference to the reference numerals in the drawings (FIGS. 1 to 5) of the following embodiments. Claim 1
The fluidization processing device (1) according to the above is configured as follows.

A slurry mixing mixer (5) into which excavated soil and a stirring liquid (water or adjusted muddy water) are added, a solidifying material mixing mixer (6) into which a solidifying material is added, and this solidifying material mixing A pressure pump (7) connected to the mixer (6).

Therefore, the excavated soil is slurried by the agitating liquid in the slurry mixer (5), and the mixer (6) for mixing is mixed.
Then, a solidifying material is mixed with this slurry to generate treated soil. Then, the treated soil in the mixing mixer (6) is backfilled in the excavation hole (H) by the pressure pump (7).

A multi-mixer fluidization treatment device (1) according to claim 2 has the following structure added to that according to claim 1. The slurry mixing mixer (5) and the solidifying material mixing mixer (6) are driven in conjunction with each other. Therefore, the slurry forming mixer (5) and the solidifying material mixing mixer (6) are simultaneously driven and operated at appropriate timings.

A multiple mixer type fluidization treatment device (1) according to claim 3 has the following structure added to that according to claim 1. The treated soil carry-in pipe (11) for directly connecting the pressure feed pump (7) to the solidifying material mixing mixer (6) was provided. Therefore, the treated soil in the solidifying material mixing mixer (6) does not have a hopper or a gate between the solidifying material mixing mixer (6) and the pressure feed pump (7), and the treated soil carry-in pipe (1).
It is directly sucked through the pressure feed pump (7) through 1).

A multi-mixer fluidization processing device (1) according to a fourth aspect of the present invention has the following configuration in addition to that of the first aspect. An opening / closing mechanism (22, 23, 22) that allows the slurry mixing mixer (5) and the solidifying material mixing mixer (6) to communicate with each other.
24) is provided. Therefore, the opening / closing mechanism (22, 23, 2
When 4) is brought into communication, the slurry in the slurry mixer (5) is put into the solidifying material mixing mixer (6) at an appropriate timing.

A multi-mixer fluidization treatment device (1) according to a fifth aspect of the present invention has the following configuration added to that of the first aspect. A filter body (26) was provided in the communication passage (R) between the slurry mixer (5) and the solidifying material mixing mixer (6). Therefore, the clod of a predetermined size or more contained in the slurry in the slurry mixer (5) is removed by the filter body (26), and the other slurry is put in the solidifying material mixing mixer (6).

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a multi-mixer fluidization treatment apparatus according to an embodiment of the present invention will be described with reference to FIGS.

The multi-mixer fluidization treatment apparatus 1 shown in FIG. 1 (a) is unitized and, as shown in FIGS. 2 to 4, is roughly classified into an excavated soil transfer conveyor 2, a water tank 3, and a water transfer pump. 4, a mixer 5 for excavating soil slurry, a mixer 6 for mixing solidifying material, and a treated soil pressure pump 7.
The multi-mixer fluidization processing device 1 can be loaded on a truck or the like, can be assembled on the vehicle after loading, and can be used in the loaded state or on the ground. The following explanation is for the case of ground installation.

The transfer conveyor 2 is of a flat belt type and is installed so as to extend obliquely upward from the excavated soil charging hopper 8 on the front end side of the unit to the rear end side of the unit.

The water tank 3 is installed behind the feeding hopper 8 and below the transport conveyor 2. The slurry mixer 5 is installed on the rear side of the unit behind the water tank 3 and below the upper carry-out section of the conveyor 2.

The transfer pump 4 is attached to a water charging pipe 9 which connects the water tank 3 and the slurry forming mixer 5. A manual switching cock 10 is attached to the water injection pipe 9 between the transport pump 4 and the slurry mixer 5.

The mixing mixer 6 is installed adjacent to and below the slurry forming mixer 5. The pressure pump 7 is installed between the slurry mixer 5 and the water tank 3 and adjacent to the water charging pipe 9. A treated soil carry-in pipe 11 is connected between the suction side of the pressure feed pump 7 and the mixing mixer 6, and a treated soil carry-out pipe 12 (carrying port) is connected to the discharge side of the pressure feed pump 7. ing.

In addition, a generator 13 is provided on the front end side of the unit adjacent to the charging hopper 8, and a workbench 14 and a control panel 15 are adjacent to the pressure pump 7 and the mixing mixer 6.
Each is installed.

In the slurry mixer 5, the mud-shaving stirring blade 17 is rotated in the stirring tank 16 by an electric motor 18 below the stirring tank 16. In this stirring blade 17, three curved mud cutting teeth 1
7a extends outwardly from the outer periphery of the vertical rotary shaft 17b to the lower side.

The mixing mixer 6 is provided with a stirring blade 20 for slurry in a stirring tank 19. In this stirring blade 20, two movable teeth 20b are provided from the upper part of the outer periphery of the vertical rotation shaft 20a rotated by the electric motor 21 on the stirring tank 19.
Is extended outward, and the vertical rotation shaft 20
Two movable teeth 20c are extended outward from the lower outer peripheral portion of a, and four fixed teeth 20d are attached to the inner periphery of the stirring tank 19.

In the slurry mixer 5, an opening / closing port 22 is formed in the bottom wall of the stirring tank 16, and an opening / closing body 23 can be opened / closed with respect to the opening / closing port 22 by a rotation center shaft 23a below the bottom wall. Supported by. An air cylinder 24 is attached below the bottom wall, and the piston rod 24
a is connected to the opening / closing body 23. The air cylinder 24 is driven and controlled by a pneumatic unit 25.
When the piston rod 24a expands and contracts, the opening / closing body 23 rotates and can be in a state of being closed with respect to the opening / closing port 22 or a state of being opened obliquely downward from the opening / closing port 22. In the mixing mixer 6, the stirring tank 19 is provided just below the opening / closing port 22.
A filter body 26 (one in which rods are arranged side by side or a net) is attached to the top. Due to the opening / closing port 22, the opening / closing body 23, the air cylinder 24, etc. An opening / closing mechanism is configured to allow communication with each other.

Next, this multi-mixer fluidization processing apparatus 1
A method for treating excavated soil using the method will be described with reference to FIG.
As shown in FIG. 1 (a), when the excavated soil from the excavated hole H is put into the input hopper 8 of the multi-mixer fluidization treatment device 1 at the time of backfilling, a predetermined amount of excavated soil is transferred to the conveyor 2. And is dropped into the stirring tank 16 of the slurry mixer 5. Further, a predetermined amount of water is transferred from the water tank 3 by the transfer pump 4 through the water feeding pipe 9 to the stirring tank 1
It can be placed in 6. Then, the excavated soil and water are agitated by the agitating blade 17 of the slurry mixer 5 for a predetermined time to be made into a slurry.

In the slurry mixer 5, when the opening / closing body 23 is rotated by the air cylinder 24 and the opening / closing port 22 is opened, water and agitated excavated soil (slurry) are passed through the opening / closing port 22 to the communication passage R. (In the present embodiment, it falls into the space between the mixers 5 and 6) and is put into the stirring tank 19 through the filter 26 in the mixing mixer 6.

On the other hand, an operator on the workbench 14 puts a predetermined amount of the solidifying material into the stirring tank 19 of the mixing mixer 6. The timing of introducing the solidifying material is arbitrarily selected. Then, the mixture of the slurry and the solidifying material in the stirring tank 19 is stirred by the mixing mixer 6 for a predetermined time to generate the treated soil.

Thereafter, the treated soil is sucked from the mixing mixer 6 through the loading pipe 11 by the pressure pump 7,
It is discharged from the carry-out pipe 12. The treated soil fluidized in this way is filled back into the excavation hole H through the carry-out pipe 12 and solidified.

The interlocking of the slurry forming mixer 5 and the solidifying material mixing mixer 6 is performed as follows, for example. When a predetermined amount of the slurry in the slurry mixer 5 is put into the solidifying material mixing mixer 6, the conveyer conveyor 2
From this, a predetermined amount of excavated soil falls into the slurry mixer 5. Then, the excavated soil is slurried in the slurry mixer 5, and at the same time, the slurry is generated as treated soil in the solidifying material mixing mixer 6.

The present embodiment has the following characteristics (a) to (f). (A) Since the work of backfilling the excavated soil in the excavated soil H can be easily performed, not only can the excavated soil be reused reliably, but also the excavated soil need not be transported. The backfill work can be streamlined and the work efficiency can be improved.

(B) The mixer is divided into one for excavating soil slurry and one for mixing solidifying material. Therefore, the operation of slurrying the excavated soil with water in the slurry mixer 5 and the operation of mixing the slurry with the solidifying material into the treated soil in the mixing mixer 6 are performed under optimum conditions according to their purposes. It can be carried out separately under the conditions of, and good fluidized soil can be produced. Further, the slurry forming mixer 5 and the mixing mixer 6 can be simultaneously driven at appropriate timings to be continuously operated, and the work efficiency can be improved. Furthermore, since the mixers 5 and 6 are downsized and the multi-mixer fluidization treatment device 1 is made compact, it is convenient for transportation and storage of the multi-mixer fluidization treatment device 1.

(C) The pumping pump 7 can surely fill the excavation hole H with the treated soil from the solidifying material mixing mixer 6. (D) Since the pressure-feeding pump 7 is directly connected to the solidifying material mixing mixer 6 by the treated soil loading pipe 11, the solidifying material mixing mixer 6 does not require a hopper, a gate, or the like to intervene between them. Can be sucked into the pressure feed pump 7. Therefore, it is possible to reduce the weight and the size of the treated soil without using a hopper, a gate, and the like, and it is possible to prevent the treated soil from being clogged or leak and to smoothly carry out the treated soil. Also, by simply rotating the pressure pump 7 in the reverse direction,
Air can be sent to the treated soil in the solidifying material mixing mixer 6 through the treated soil carry-in pipe 11, the mixing property is improved and the quality of the treated soil is improved.

(E) When the opening / closing member 23 is rotated downward to open the opening / closing port 22, the slurry in the slurry forming mixer 5 is put into the solidifying material mixing mixer 6 at an appropriate timing, so that a good flow is achieved. It is possible to generate chemical treated soil and improve work efficiency. Further, even if the earth and sand in the slurry is placed on the opening / closing body 23 when the opening / closing opening 22 is closed, the opening / closing opening 23 opens and closes the opening / closing body
Is inclined downward and separated from the opening / closing port 22, so that the earth and sand easily drop from the opening / closing body 23, and when the opening / closing opening 22 is closed, the sand and sand are less likely to be caught between the opening and closing body 23.

(F) Since the clod of a predetermined size or more contained in the slurry in the slurry mixer 5 is removed by the filter body 26 and the other slurry is put in the solidifying material mixing mixer 6, the treatment is performed. Soil quality can be stabilized and improved.

In addition to the above embodiment, the following configuration (a) may be adopted. (A) Mixer 6 for mixing solidifying material as well as excavated soil and water
Provided with a mechanism for automatically charging.

Technical ideas (other than claims) that can be understood from each embodiment will be described together with effects. (A) In Claim 1, the mixer 5 for slurrying is provided with the conveyor 2 for feeding the excavated soil. Therefore, the excavated soil can be automatically charged into the slurry mixer 5, and the excavated soil charging operation can be easily performed.

(B) In claim 1, the stirring liquid tank 3 (water tank), the stirring liquid charging passage (water charging pipe 9) connecting the tank 3 and the slurry forming mixer 5, and the stirring liquid (water). 4) from the tank 3 to the slurry mixer 5 through the charging path (water charging pipe 9). Therefore, water can be automatically charged into the slurry mixer 5, and the water charging operation is facilitated.

(C) In claim 1, the opening / closing mechanism is
An opening / closing opening 22 provided in the slurry mixer 5 is provided, an opening / closing body 23 capable of opening / closing the opening / closing opening 22, and a drive unit (air cylinder 24) for opening / closing the opening / closing body 23 with respect to the opening / closing opening 22. , The mixer 22 for mixing the opening / closing port 22
Communicated with. Therefore, excavated soil can be transferred from the slurry mixer 5 to the mixing mixer 6 with a simple structure.

[0037]

EFFECTS OF THE INVENTION According to the plural mixer type fluidization treatment device (1) of the first aspect, firstly, not only excavated soil can be reliably reused, but also excavated soil need not be transported. The backfilling work is rationalized, and the work efficiency can be improved. Secondly, 1) the pumping pump (7) can surely fill the treated soil back into the excavation hole (H). 2) Depending on the purpose of the slurry mixer (5) or mixing mixer (6). Under the optimal conditions, the excavated soil can be slurried and the solidified material can be mixed separately, and the excellent fluidized soil can be regenerated, which is also an excellent effect.

According to the plural mixer type fluidizing treatment device (1) of the second aspect, in addition to the effect of the plural mixer type fluidizing treatment device (1) of the first aspect, a slurry mixer (5) is provided. The working efficiency can be improved by simultaneously operating the mixing mixer (6).

According to the plural mixer type fluidization treatment device (1) of the third aspect, in addition to the effect of the plural mixer type fluidization treatment device (1) of the first aspect, the treated soil loading pipe (1)
By 1), the treated soil can be directly sucked from the solidifying material mixing mixer (6) to the pressure feed pump (7), and the weight and the size can be reduced, and the treated soil can be prevented from being clogged or leaked. The soil can be carried out smoothly.

According to the plural mixer type fluidizing treatment device (1) of the fourth aspect, in addition to the effect of the plural mixer type fluidizing treatment device (1) of the first aspect, the inside of the slurry forming mixer (5) Since the slurry of (1) is put into the solidifying material mixing mixer (6) at an appropriate timing, good fluidized soil can be generated and the work efficiency can be improved.

According to the plural mixer type fluidizing treatment device (1) of the fifth aspect, in addition to the effect of the plural mixer type fluidizing treatment device (1) of the first aspect, the inside of the slurry forming mixer (5) Since the clod of a predetermined size or more contained in the slurry of (1) is removed by the filter body (26), the quality of the treated soil can be stably and improved.

[Brief description of drawings]

FIG. 1 (a) is an operation explanatory view showing a system for treating excavated soil by using the multi-mixer fluidization treatment device according to the present embodiment, and FIG. 1 (b) shows a conventional multi-mixer treatment system. FIG.

FIG. 2 is a schematic partial plan view showing a multi-mixer fluidization treatment device according to the present embodiment.

FIG. 3 is a schematic partial front view of the same.

FIG. 4 is a schematic partial side view of the same.

FIG. 5 is a flowchart showing a method of fluidizing multiple mixers according to the present embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plural mixer type | formula fluidization processing apparatus, 2 ... Excavation soil conveyance conveyor, 3 ... Water tank, 4 ... Water conveyance pump, 5 Slurry mixer, 6 ... Solidification material mixing mixer, 7 ... Processing earth pressure pump, 8 … Excavated soil input hopper, 9… Water input pipe, 11
... Treated soil loading pipe, 12 ... Treated soil unloading pipe, 22 ... Opening / closing port, 23 ... Opening / closing body, 24 ... Air cylinder, 26 ... Filter body, R ... Communication passage, H ... Drilling hole.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hideki Fukuzawa 5-14-2 Kanayama, Naka-ku, Aichi Prefecture Oita Construction Co., Ltd. (72) Inventor Yoshihisa Ozeki 1-2-22, Hirashima, Ichinomiya-shi, Aichi No. Stock Company Nagoya Daiichi Machinery

Claims (5)

[Claims] 1. Excavation soil and stirring liquid (water or adjusted mud, etc.)
And a solidifying material mixing mixer (6) into which the solidifying material is charged, and a pressure feed pump (7) connected to the solidifying material mixing mixer (6). A multi-mixer fluidization treatment device characterized by the above. 2. The multi-mixer fluidization treatment apparatus according to claim 1, wherein the slurry mixer (5) and the solidifying material mixing mixer (6) are driven in association with each other. 3. The multi-mixer fluidization process according to claim 1, wherein the solidification material mixing mixer (6) is provided with a processing soil loading pipe (11) for directly connecting the pressure feed pump (7). apparatus. 4. An opening / closing mechanism (22, 2) for allowing the slurry mixing mixer (5) and the solidifying material mixing mixer (6) to communicate with each other.
3, 24) are provided, The multiple mixer fluidization processing apparatus of Claim 1 characterized by the above-mentioned. 5. A filter body (26) is provided in a communication passage (R) between the slurry mixing mixer (5) and the solidifying material mixing mixer (6).
The multi-mixer fluidization treatment device according to claim 1, further comprising: