KR102287199B1 - Raw-soil pretreatment hopper - Google Patents

Abstract

The present invention relates to a raw soil pretreatment hopper which homogeneously pulverizes raw soil including on-site generated soil and the like generated at a construction site to supply pretreated soil to a subsequent process. According to a preferred embodiment of the present invention, the raw soil pretreatment hopper pretreats raw soil to form lightweight mixed soil in a slurry state, which is formed by mixing the raw soil with a solidifying agent and water. The raw soil pretreatment hopper comprises: a hopper main body (11) having an open upper part and having an outlet (111) formed at the lower part to be selectively opened and closed; and a pulverizer (12) provided inside the hopper main body (11) to be rotatable, having a plurality of disks (122) coupled to the outer circumferential surface of a rotation shaft (121), and having a plurality of pulverization blades (123) bent in an L shape and formed on a side surface of each of the disks (122). Any one of the pulverization blades (123a) of the plurality of pulverization blades (123) is bent in an L-shape in the opposite direction to the other pulverization blades (123b), and at least one transfer blade (125) is provided between any one disk (122a) and an adjacent disk (122b) among the plurality of disks (122).

Description

Raw-soil pretreatment hopper {Raw-soil pretreatment hopper}

The present invention relates to a raw soil pretreatment hopper, and in detail, a post-processing of pretreated soil formed by homogeneously pulverizing raw soil such as on-site generated soil generated at a construction site in a raw soil pretreatment hopper including a grinding blade and a transfer blade It relates to a raw soil pretreatment hopper for manufacturing lightweight mixed soil that can reduce construction costs and shorten construction period by producing lightweight mixed soil with uniform quality such as unit weight, strength and fluidity by supplying it to

For filling or replacement of soft ground, widening of roads, backfilling of structures such as the back of an abutment, and refilling of active areas, it is generally accompanied by the process of bringing in and filling of high-quality external soil. However, if the surplus load increases excessively during the ground filling process, treatment work to separately reinforce the soft ground below the fill layer is required.

Accordingly, a technology for the reinforcing embankment structure of ultra-soft ground using EPS blocks using EPS blocks as embankment materials was developed (Registration Patent No. 10-0690049). However, in order to improve the disadvantages that EPS blocks have low strength, long-term subsidence potential, and difficult filling by pumping and pipe pouring, in Patent Registration No. 10-1042281, instead of EPS blocks, it is recommended to use soil generated during on-site construction instead of EPS blocks. A technology for an on-site fluidized treated soil manufacturing and supply machine that mixes fire and water and uses it as a backfill has been developed (Registration Patent 10-1042281).

However, in the case of the above registration technology, the field-generated soil has an irregular particle size and water content, making it difficult to produce a backfill material of homogeneous quality. Therefore, most of the civil engineering sites are classified as waste soil, and even if it is used, it is difficult to use it on a large scale.

As a technology to solve this problem, there is a raw soil pretreatment hopper for manufacturing lightweight mixed soil of Registered Patent No. 10-1976677, but when applied in the field, appropriate grinding and agitation is performed in sandy soil, whereas in clay soil, it is relatively agglomerated. There is a problem that pulverization and stirring are not completely accomplished due to their properties.

The present invention is to solve the problems of the prior art, and by adding a transfer blade and a grinding blade to the pretreatment hopper, it is intended to provide a raw soil pretreatment hopper that enables easy grinding and stirring in not only sandy soil but also viscous soil.

In particular, the present invention is to provide a raw soil pretreatment hopper that enables homogeneous pulverization by allowing raw soil to move without staying in a specific space through a transfer blade.

According to a preferred embodiment of the present invention for solving the above problems, the raw soil is pretreated to form a lightweight mixed soil in a slurry state by mixing a solidifying agent and water, the upper part is open, and the lower part is selectively Hopper body 11 provided with a discharge port 111 to open and close; And a plurality of disks 122 are coupled to the outer circumferential surface of the rotation shaft 121 to be rotatably provided inside the hopper body 11, and a plurality of grinding blades bent in a L shape on the side surface of each disk 122 ( 123) to which the grinder 12 is coupled; of the plurality of grinding blades 123, any one of the grinding blades 123a is bent in an L-shape in the opposite direction to the other grinding blades 123b, and any one of the plurality of disks 122 A plurality of grinding blades coupled to any one of the plurality of disks 122a, further comprising at least one transfer blade 125 provided between the 122a and the adjacent disk 122b. At least one of the grinding blades of (123a', 123b') has a lower bending height (h) than the grinding blades (123a, 123b) of the neighboring disk (122b), and the transfer blade (125) has all neighboring discs (122b). A plurality of disks are provided to connect the disks, respectively, and the transfer blade 125 has coupling ends 125a and 125b to be coupled to adjacent disks, respectively, and a transfer blade portion 125c for connecting the coupling ends 125a and 125b. is made of, and the adjacent disc 122b than the end width w1 of the transfer blade 125c on the side of the coupling end 125b coupled to the disc 122a to which the grinding blade having the lower bending height h is coupled. ) to provide a raw soil pretreatment hopper, characterized in that the end width (w2) of the transfer blade portion 125c' on the side of the coupling end 125b' coupled to it is formed to have a larger width.

According to another preferred embodiment of the present invention, the transfer blade 125 is provided in an oblique direction on the rotation shaft 121 .

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According to another preferred embodiment of the present invention, a plurality of striking projections 126 are provided on one side of the transfer blade 125 .

According to another preferred embodiment of the present invention, the grinder 12 is provided as a pair and rotates in opposite directions, and the grinding blades 123 are bent in opposite directions.

According to another preferred embodiment of the present invention, each transfer blade 25 provided in the crusher 12 provided as a pair is characterized in that it is provided at the same angle with respect to the rotation shaft 121 .

According to another preferred embodiment of the present invention, the pulverizer 12 is provided as a pair, by rotating and spaced apart from one another by 180 degrees in a direction perpendicular to the axial direction of the rotating shaft 121, any one of the same two pulverizers It is provided, and each of the crushers 12 is characterized in that it rotates in opposite directions to each other.

According to the present invention, pre-treated soil formed by homogeneously pulverizing waste soil such as viscous soil with high adhesion among raw soils such as site-generated soil including waste soil generated at the construction site in a raw soil pre-treatment hopper is used in the subsequent process when manufacturing lightweight mixed soil. can supply

In particular, according to the present invention, grinding can be performed evenly even with a single grinder, and when a pair (two) is configured, grinding can be more balanced, so that lightweight mixed soil can be efficiently manufactured using various raw soils. There is an advantage that

Therefore, it is possible to produce lightweight mixed soil with homogeneous quality such as unit weight, strength, and fluidity, and supply it widely for filling or replacement of soft ground, widening of roads, backfilling of structures such as the back of an abutment, and ground improvement and reinforcement such as filling of active areas. Therefore, it is possible to reduce the cost of construction at various construction sites and to shorten the construction period, which is economical.

In addition, even the waste soil generated at the site can be used as a high-quality filling material, saving disposal costs and costs for obtaining high-quality filling materials.

1 is a perspective view showing a pulverizer provided in the raw soil pretreatment hopper according to an example of the present invention.
Figure 2 is a view showing the overall configuration of the lightweight mixed soil manufacturing equipment comprising a raw soil pretreatment hopper according to an example of the present invention.
Figure 3 is a cross-sectional view showing a raw soil pretreatment hopper according to an example of the present invention.
4 is a side view of a grinder according to an example of the present invention.
5 is a perspective view and a side view of a transfer blade according to an example of the present invention.
Fig. 6 is a partial side view showing an embodiment of the grinder.
7 is a perspective view showing another embodiment of the grinder.
8 is a perspective view showing an embodiment of a grinder provided as a pair.
9 is a perspective view for comparison with another embodiment of the transfer blade.
Fig. 10 is a side view showing another embodiment of the grinder;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in the description of the present invention, in the case of obscuring or obscuring the technical idea of the present invention due to the detailed description of the known configuration, the description of the known configuration will be omitted.

1 is a perspective view showing a grinder provided in a raw soil pretreatment hopper according to an example of the present invention, and FIG. 2 is an overall configuration of light mixed soil manufacturing equipment including a raw soil pretreatment hopper according to an example of the present invention. 3 is a cross-sectional view showing a raw soil pretreatment hopper according to an example of the present invention.

1 to 3, the raw soil pretreatment hopper 1 according to a preferred embodiment of the present invention is for pretreating raw soil to form a lightweight mixed soil in a slurry state by mixing a solidifying agent and water. As such, the upper part is opened and it is composed of a hopper body 11 capable of inputting raw soil and a pulverizer 12 for pulverizing raw soil.

The pre-treated soil homogeneously treated in the raw soil pre-treatment hopper 1 may be provided as a lightweight mixed soil in a slurry state with homogeneous quality through the lightweight mixed soil manufacturing equipment as shown in FIG. 2 .

As shown in Figure 2, the lightweight mixed soil manufacturing equipment can be configured including a raw soil pretreatment hopper (1), a dismantling unit (3), a supply unit (5), a main stirring unit (6) and a storage tank (8) do.

The raw soil pretreatment hopper 1 pulverizes the supplied raw soil and mixes and stirs water to prepare pretreated soil.

Raw soil, which is on-site generated soil generated at the construction site by backhoe, etc., is supplied to the raw soil pretreatment hopper (1).

Water is supplied to the inside of the raw soil pretreatment hopper 1 by a pump (not shown) from a water tank (not shown). Accordingly, in the raw soil pretreatment hopper (1), the raw soil is pulverized to a particle size that does not interfere with the pressure feeding, mixed with the input water, and stirred until the soil mass of the raw soil is released.

At this time, the water supplied to the raw soil pretreatment hopper (1) is put in only a minimum amount enough to loosen the lumped soil.

When the raw soil supplied to the raw soil pretreatment hopper (1) is stirred for a certain period of time and the soil mass is pulverized to generate the untreated pretreated soil, the density and flow value of the pretreated soil are checked, and then the discharge port provided in the raw soil pretreatment hopper (1) is opened to transfer the pre-treated soil to the dismantling unit (3) or the first service hopper (2).

Since the upper part of the hopper body 11 is opened, raw soil can be introduced into the hopper body 11 through the open upper part, and the discharge port 111 that is selectively opened and closed at the lower part of the hopper body 11 is provided. provided

Accordingly, when the raw soil injected into the hopper body 11 is completely pulverized by the pulverizer 12 and pre-treated soil is generated, the discharge port 111 is opened to remove the pre-treated soil from the dismantling part 3 or the first It can be discharged to the service hopper (2).

The pulverizer 12 is for pulverizing the raw soil injected into the hopper body 11, and a plurality of disks 122 are coupled to the outer circumferential surface of the rotation shaft 121 rotatably provided inside the hopper body 11. and a plurality of grinding blades 123 are coupled to the side of each disk 122 .

At this time, the end of the grinding blade 123 is bent in a right angle direction toward the front or rear of the rotation shaft 121 to be bent in a L-shape as a whole.

When the grinding blade 123 is bent in a L-shape, the grinding blade 123 can grind the raw soil in two directions, thereby increasing the grinding efficiency.

A portion bent in the L-shape of the grinding blade 123 protrudes to the outside of the disk 122 .

As the rotary shaft 121 of the pulverizer 12 rotates, the raw earth soil mass is pulverized by the side blades of the pulverizing blade 123 .

As shown in FIG. 1 , any one of the plurality of grinding blades 123 may be bent in an L-shape in the opposite direction to the other grinding blades 123b.

As shown in FIG. 1 , it will be described with reference to a case in which four grinding blades 123 are coupled to one disk 122 as follows.

That is, of the four grinding blades 123, three grinding blades 123b are bent forward in an L-shape, and one grinding blade 123a may be configured to be bent backwardly in an L-shape.

Accordingly, the grinding blade 123a bent backward is so that the raw soil pulverized by the grinding blade 123 coupled to the disk 122 located at the rear is not separated to the outside and is maintained inside the grinding blade 123 again. Therefore, as a result, there is an effect of increasing the grinding efficiency.

Figure 4 is a side view of a grinder according to an example of the present invention, Figure 5 is a perspective view and a side view of a transfer blade according to an example of the present invention.

1 and 4, the grinder 12 provided in the raw soil pretreatment hopper 1 according to an example of the present invention is adjacent to any one disk 122a among the plurality of disks 122. It further includes at least one transfer blade 125 provided between the disks 122b.

Preferably, the transfer blade 125 is configured to connect the one disk 122a and the neighboring disk 122b to each other, and the transfer blade 125 is provided in an oblique direction to the rotation shaft 121 . do.

For example, as shown in FIGS. 4 and 5 , a plurality of disks may be provided to connect all neighboring disks, respectively. The transfer blade 125 includes coupling ends 125a and 125b connected to the disk 122 and a transfer blade 125c connecting both coupling ends.

For example, in the transfer blade 125, one disk 122a and the coupling end 125a are coupled, and the neighboring disk 122b is coupled with the other coupling end 125b, so that the disks adjacent to each other are interposed between the adjacent disks. is positioned, and rotation of the transfer blade 125c is performed together with the grinding blade 123 coupled to the disks 122a and 122b by the rotation of the rotating shaft 121 .

While the pulverizer 12 according to an example of the present invention rotates in the axial direction by the rotating shaft 121, the raw soil is pulverized by the four pulverizing blades 123, but the pulverizing blade 123 is not located, that is, If the raw soil in the space between the inner space of the bent portion of each grinding blade 123 and the space between the disk 122a and the adjacent disk 122b is strong, it is not easy to pulverize.

At this time, as shown in FIG. 4 , as the transfer blade 125 is provided in an oblique direction on the rotation shaft 121 , when the rotation shaft 121 rotates, the transfer blade 125 rotates with the rotation direction. As the raw soil is transferred to the upper or lower part of the rotating shaft, it is possible to prevent the raw soil from remaining in a certain space and not being cut or crushed.

The transfer blade 125 may perform a primary stirring operation as well as allowing the raw soil to be pulverized by the grinding blade 123 .

6 is a partial side view showing an embodiment of the grinder.

As another example of the present invention, at least one of the plurality of grinding blades 123a' and 123b' coupled to any one of the plurality of disks 122 is a neighboring disk 122b. ) of the grinding blades (123a, 123b) may be configured to have a lower bending height (h) than.

The bending heights (H, h) may be understood as the height of the space formed between the grinding blade 123 and the rotation shaft 121 while being bent forward or backward in an L-shape.

If the bending heights of all the blades 123 are the same or similar, uniform grinding is difficult depending on the aggregated (before grinding) size of the raw soil, so as shown in FIG. Unlike (H), by configuring the grinding blades 123a' and 123b' having a lower bending height (h), more uniform raw soil grinding can be achieved regardless of the size of the raw soil.

Preferably, the lower bending height (h) may be formed to about 1/2 to 2/3 compared to other bending heights (H).

9 is a perspective view for comparison with another embodiment of the transfer blade, and FIG. 10 is a side view showing another embodiment of the grinder.

The grinder 12 according to another embodiment of the present invention may be configured to include at least one or more of each of the transfer blades 125 and 125 ′ shown in FIGS. 9A and 9B .

As shown in FIG. 9, the transfer blades 125 and 125' have a small end width at one end of the transfer blade 125c (refer to FIG. 9 (a)) or large (refer to FIG. 9 (b)). , and pulverization in the raw soil transfer process can be performed more efficiently by this end width.

For example, as shown in FIG. 10 , the transfer blades 125 and 125 ′ are coupled to the engaging end 125b that is coupled to the disc 122a to which the grinding blade having the lower bending height h is coupled. The end width w2 of the transfer blade 125c ′ on the side of the coupling end 125b ′ coupled to the neighboring disk 122b is formed to have a greater width than the end width w1 of the transfer blade 125c. can

As described above, the grinding blade (123a') having a lower bending height (h) is more efficient grinding when the aggregate size of the raw soil is small, and the transfer blade part 125c of the transfer blade 125 has a large end width. Even if the raw soil is not, it can be delivered to the grinding blade (123a') having a lower bending height (h).

However, in order to supply the raw soil transferred according to the rotation of the transfer blade 125 to the grinding blade 123a having a relatively high bending height H, the transfer blade part 125c' is preferably configured to have a larger end width. do.

The transfer blade 125' according to the present embodiment is formed so that the end width w2 of the transfer blade part 125c' on the side of the coupling end 125b' coupled to the neighboring disk 122b has a larger width. In this case, when the transfer blades 125c and 125c' of the transfer blades 125 and 125' by the rotation of the rotating shaft 121 transfer (extrude) the raw soil, the lower bending height (h) The transfer blade 125c' on the side of the engaging end 125b' coupled to the neighboring disk 122b rather than the transfer blade 125c on the side of the coupling end 125b coupled to the disk 122a to which the grinding blade is coupled. allows the raw soil to be transported further in a direction perpendicular to the axial direction of the rotation shaft 121 .

Therefore, the disk (w1) adjacent to the end width w1 of the transfer blade portion 125c on the side of the coupling end 125b coupled to the disk 122a to which the grinding blade 123a' having the lower bending height h is coupled ( When the end width w2 of the transfer blade portion 125c' on the side of the coupling end 125b' coupled to 122b is formed to have a larger width, the transferred raw soil has a relatively high bending height (H). Grinding can be performed on the grinding blades 123a and 123b.

7 is a perspective view showing another embodiment of the grinder.

According to another preferred embodiment of the present invention, a plurality of striking projections 126 may be provided on one side of the transfer blade 125 .

The striking protrusion 126 allows the transfer blade 125 to not only transfer the raw soil when the rotating shaft 121 is rotated, but to further obtain the effect of breaking a part of the raw soil by hitting it.

8 is a perspective view showing an embodiment of a grinder provided as a pair.

According to a preferred embodiment of the present invention, the crusher 12 may be provided as a pair and rotate in opposite directions, and the crushing blade 123 may be bent in opposite directions.

For example, each of the transfer blades 25 provided in the crusher 12 provided as a pair may be provided at the same angle with respect to the rotation shaft 121 .

When the pulverizer 12 is provided as a pair and rotates in opposite directions, pulverization may be performed while the raw soil is circulated.

For example, as shown in FIG. 8, when one grinder rotates in the c1 direction, the raw soil supplied to the corresponding grinder 12 provided in the raw soil pretreatment hopper 1 is pulverized while being transferred in the d1 direction. is done

In addition, when another pulverizer rotates in the c2 direction, the raw soil supplied to the pulverizer is pulverized while conveying it in the d2 direction.

That is, the pulverizer 12 composed of a pair can pulverize the raw soil input to the upper part of the raw soil pretreatment hopper while circulating in the direction connecting d1 and d2, so that uniform and efficient pulverization can be achieved.

According to a preferred embodiment of the present invention, the pulverizer 12 is provided as a pair, and any one of the same two pulverizers is rotated 180 degrees in a direction perpendicular to the axial direction of the rotating shaft 121 and spaced apart. , the respective grinders 12 are configured to rotate in opposite directions to each other.

As described above, when configuring the grinder 12 as a pair, the transfer blade 125 is rotated on the rotation shaft 121 while the different grinders 12 are respectively bent in opposite directions to the grinding blades 123. It may be configured to have the same angle with respect to the axial direction. However, since the same effect as in the previous embodiment can be obtained even when one of the same two grinders is rotated and spaced apart as in this embodiment, it is most preferable in terms of manufacturing process, inventory management, and cost.

In this case, as described above, as each grinder 12 rotates in opposite directions to each other, the raw soil circulates while moving, and the grinding is uniformly performed by each grinder 12 and the operation of primary stirring is simultaneously performed. Therefore, through the process after the raw soil pretreatment hopper (1), a homogeneous lightweight mixed soil can be formed.

A screen net 21 is provided at the lower portion of the raw soil pretreatment hopper 1, and a first service for transferring the filtered mud to the dismantling unit 3 by the transfer conveyor 22 at the lower portion of the screen net 21 A hopper 2 may be provided.

The screen network 21 filters out foreign materials such as raw soil, tree roots, and gravel having a particle size (eg, 5 mm or 10 mm or more) that interferes with mud control, kneading and injection in the post-process.

The foreign matter removed by the screen network 21 is separately collected and discarded.

A transfer conveyor 22 is provided at one end of the first service hopper 2 to transfer the mud passing through the screen network 21 to the dismantling unit 3 at a constant speed.

In other words, after the pulverization of the soil mass, mixing with water, and stirring in the raw soil pretreatment hopper (1) are completed, the discharge port 111 provided in the raw soil pretreatment hopper (1) is opened and the raw soil pretreatment hopper (1) The mud inside is discharged, and the discharged mud is transferred to the inside of the first service hopper (2) through the screen network (21) of the first service hopper (2), and then through the transfer conveyor (22) to the dismantling unit (3) is transferred to

The dismantling unit 3 prepares dismantled soil by dismantling the pre-treated soil transferred from the raw soil pre-treatment hopper 1 .

The dismantling part 3 may be provided with a stirrer therein.

In the interior of the dismantling unit 3, the pre-treated soil is secondarily disassembled by rotating the stirrer, and water may be introduced from the water tank to prevent sedimentation of soil particles, control water content, and the like.

The dismantled soil supplied from the dismantling unit 3 is transferred to the soil supply hopper 51 of the supply unit 5 to be described later.

At this time, the dismantling soil supplied from the dismantling unit 3 may be transferred to the soil supply hopper 51 positioned higher than the dismantling unit 3 by the bucket elevator 4 disposed in the vertical direction.

Accordingly, the dismantling soil supplied from the dismantling unit 3 by the bucket located in the bucket elevator 4 can be transported while maintaining a constant water content.

The supply unit 5 is composed of a soil supply hopper 51 , a solidifying agent supply hopper 52 , and a water supply unit 53 .

The soil supply hopper 51, the solidifying agent supply hopper 52, and the water supply unit 53 are for supplying the dismantled soil, the solidifying agent and water transferred from the dismantling unit 3 to the main stirring unit 6, respectively. , the soil supply hopper 51, the solidifying agent supply hopper 52 is formed with a discharge port at the bottom, respectively. A discharge port may also be formed in the water supply unit 53 .

The solidifying agent may be Portland cement (KS L 5201), blast furnace slag cement (KS L 5210), or an equivalent solidifying agent capable of exhibiting the design strength of lightweight mixed soil.

Water may be supplied to the water supply unit 53 by a pump in the water tank.

A load cell (not shown) may be provided in the soil supply hopper 51, the solidifying agent supply hopper 52, and the water supply unit 53, and the contents are quantified by controlling the opening and closing of the corresponding discharge port according to the measured value of each load cell. A control unit 9 to be supplied may be provided.

The control unit 9 can also control the operation of the stirrer provided in the main stirring unit 6 to be described later.

The main stirrer 6 stirs the dismantled soil, solidifying agent and water supplied from the soil supply hopper 51, the solidifying agent supply hopper 52 and the water supply unit 53, respectively, to prepare a lightweight mixed soil in a slurry state. .

A stirrer is provided inside the main stirrer 6 to mix the dismantled soil, solidifying agent and water supplied into the main stirrer 6 .

In the main stirrer 6, since the dismantled soil, the solidifying agent, and water must be uniformly stirred, the rotating shaft of the stirrer is arranged in the transverse direction so that the light mixed soil of up, down, left and right in the main stirrer 6 is uniformly mixed. do.

When the light mixed soil in a slurry state is formed by stirring the dismantled soil, the solidifying agent, and water for a certain period of time, the lightweight mixed soil is discharged through the discharge port and transferred to the storage tank (8).

A second service hopper 7 may be provided at a lower portion of the main agitator 6 to temporarily store and transfer the mixed lightweight soil in a slurry state in which the mixing is completed to the storage tank 8 .

In the storage tank (8), the lightweight mixed soil in the slurry state transferred from the main agitator (6) is stored.

An agitator is provided inside the storage tank 8, and the light mixed soil supplied according to the rotation of the agitator may be configured to maintain a homogeneous state.

On the other hand, although not shown in the drawings, the storage tank 8 may be provided with a pressure-feeding pump for pressurizing the lightweight mixed soil stored in the storage tank 8 to the injection pipe.

The pressure pump pumps the lightweight mixed soil in the storage tank 8 to the injection pipe (not shown) and injects it to the construction site.

The storage tank 8 may be configured such that the bubbles generated by the bubble generator (not shown) are supplied and mixed with the lightweight mixed soil.

Accordingly, the air bubbles supplied into the storage tank 8 are mixed with the lightweight mixed soil by the agitator inside the storage tank 8 to lighten the lightweight mixed soil.

The bubble generator may mix a foaming agent and water to prepare a foaming agent, and may generate bubbles by using air pressure.

According to the present invention as described above, it is possible to provide a lightweight mixed soil of homogeneous and reliable quality by pulverizing the raw soil, which is the on-site soil generated at the construction site. The lightweight mixed soil produced in this way can be used in various ways for filling or replacing soft ground, widening roads, backfilling structures such as the back of an abutment, refilling active areas, etc., so it is possible to reduce the construction cost and shorten the construction period This is possible and economical.

In the above, the present invention has been described in detail with reference to specific embodiments, but since the embodiments are merely examples for easy understanding of the present invention, substitutions, additions, and modifications are made within the scope not departing from the technical spirit of the present invention. Embodiments will also fall within the protection scope of the present invention defined by the following claims.

1: Raw soil pretreatment hopper 11: Hopper body
111: outlet 12: grinder
121: axis of rotation 122: disk
123: grinding blade 125: transfer blade
126: Strike Turn
2: first service hopper 21: screen network
22: transport conveyor 3: dismantling part
4: Bucket elevator 5: Supply part
51: soil supply hopper 52: solidifying agent supply hopper
53: water supply part 6: main stirring part
7: 2nd service hopper 8: storage tank
9: Control

Claims (8)

It is to pre-treat raw soil to form a lightweight mixed soil in a slurry state by mixing a solidifying agent and water,
a hopper body 11 having an open upper portion and a selectively opening and closing outlet 111 at the lower portion; and
A plurality of disks 122 are coupled to the outer circumferential surface of the rotation shaft 121 to be rotatably provided inside the hopper body 11, and a plurality of crushing blades 123 bent in an L shape on the side surface of each disk 122 ) The grinder 12 is coupled; is composed of
Any one of the grinding blades 123a among the plurality of grinding blades 123 is bent in an L-shape in the opposite direction to the other grinding blades 123b,
Further comprising at least one transfer blade (125) provided between any one of the plurality of disks (122) (122a) and the neighboring disk (122b),
At least one of the plurality of grinding blades 123a' and 123b' coupled to one of the plurality of disks 122 is the grinding blades 123a and 123b of the neighboring disk 122b. ) has a lower bending height (h) than
The transfer blade 125 is provided in plurality to connect all the neighboring disks, respectively, and the transfer blade 125 includes coupling ends 125a and 125b and the coupling ends 125a to be respectively coupled to the neighboring disks. End width of the transfer blade portion 125c on the side of the coupling end 125b, which consists of a transfer blade portion 125c connecting 125b), and is coupled to the disk 122a to which the grinding blade having a lower bending height h is coupled. Raw soil pretreatment hopper, characterized in that the end width w2 of the transfer blade portion 125c' on the side of the coupling end 125b' coupled to the adjacent disk 122b is formed to have a greater width than (w1). . In claim 1,
The transfer blade (125) is a raw soil pretreatment hopper, characterized in that provided in an oblique direction to the rotation shaft (121). delete delete In claim 1,
Raw soil pretreatment hopper, characterized in that a plurality of striking projections 126 are provided on one side of the transfer blade 125. In claim 1,
The pulverizer 12 is provided as a pair and rotates in opposite directions, and the pulverization blades 123 are bent in opposite directions. In claim 6,
Raw soil pretreatment hopper, characterized in that each of the transfer blades (25) provided in the crusher (12) provided as a pair is provided at the same angle with respect to the rotation shaft (121). In claim 1,
The pulverizer 12 is provided as a pair, and any one of the same two pulverizers is rotated and spaced apart by 180 degrees in a direction perpendicular to the axial direction of the rotation shaft 121, and each pulverizer 12 is Raw soil pretreatment hopper, characterized in that it rotates in opposite directions.

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