JPH081064B2 - Rotary sieving apparatus and method for treating mixture of sediment and liquid for consolidating using rotary sieving apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary sieving apparatus for separating solids having different particle diameters from each other or liquids containing liquids having different particle diameters. The present invention relates to a method for treating a mixture with a binding liquid material.

[0002]

2. Description of the Related Art Conventionally, separation of solids having different particle sizes from each other,
Alternatively, there is a rotary sieving apparatus as a sieving apparatus for separating solids containing a liquid and having different particle diameters. This rotary sieving device has a tubular shape with a large number of small holes such as a mesh-like peripheral surface. Small particles pass, and large particle diameters remain in the cylinder, or move to the other end of the cylinder and are discharged to the outside.

On the other hand, the soil and sand and the liquid for solidification are agitated and mixed while jetting the liquid for solidification such as cement milk in the ground to form a retaining wall, a water stop wall, an underground wall and the like. Or
Or civil engineering work to improve the ground is known, but in this case, a mixture of earth and sand and liquid material for consolidation overflows on the ground,
Even if you try to dispose of it, it is a mud containing cement milk, so there is a problem that it is difficult to handle because it has too much water even if you try to transport it by truck to dispose of it. The problem occurs. Therefore, to reduce the water content of the waste,
It is considered to separate the water content of the mixture of earth and sand and the liquid material for consolidation with a centrifuge, but the equipment is large and the processing time is long and the processing cost is high. There is. Therefore, it is considered to reinject the mixture of the earth and sand overflowing above the ground and the liquid material for consolidation into the ground. As a method for recycling the mixture of earth and sand and the liquid material for consolidation, for example, Japanese Patent Publication No. 40813/1986 is known.

This is to excavate the ground while ejecting cement milk from the lower end of the excavation shaft and to advance the excavation to a predetermined position while mixing the excavated soil and cement milk to form the primary mixing pile. The first step of reaching the lower end of the shaft, and the second step of creating secondary mixing soil by adding cement to the primary mixed soil unloaded to the ground by excavation of the excavation shaft and re-kneading it In the construction of the primary mixing pile, after the lower end of the excavation shaft reaches a predetermined position, the secondary mixed soil produced in the second process is extruded from the lower end of the excavation shaft instead of the cement milk in the first process. It comprises a third step of pulling up the excavation shaft while filling the excavation hole to form a pile in which the secondary mixed soil is filled.

[0005]

However, in the above-mentioned conventional sieving apparatus, when the rotating cylinder is used, the sieving can be performed only one step, and if this is performed in multiple steps, the diameter of the small hole will be small. It is necessary to arrange multiple rotating cylinders with different diameters side by side, and to put the residue of the sieve from one end of another rotating cylinder with a different small hole diameter for further sieving. There is a problem that a large space is required for arranging the rotating sieves of (1) side by side, and a special device is also required for putting what has been sieved in a tubular body into another tubular body.

[0006] Further, in the method disclosed in Japanese Patent Publication No. 61-40813, which is a conventional example of a method for recycling a mixture of earth and sand and a liquid material for consolidation, the earth and earth and earth When re-injecting the mixture with the liquid material for consolidation into the ground, when returning it through the injection pipeline for recycling, there is a problem that sediment with a large particle size is clogged in the injection pipeline. When excavating the inside, the volume of excavated earth and sand increases, and since a congealing liquid substance such as cement milk is added to this from the outside and stirred and mixed, the earth and sand overflowing on the ground and the congealing liquid substance are mixed. At present, only a part of the mixture can be returned to the ground, and the rest must treat mud containing a solidifying component such as cement as industrial waste.

The present invention has been made in view of the above-mentioned problems of the prior art, and the main object of the present invention is to separate solids having different particle sizes from each other or to obtain a particle size containing a liquid. It is to provide a rotary sieving apparatus capable of efficiently separating different solids in a plurality of stages, and another object is to use the rotary sieving apparatus to separate the soil and the liquid material for consolidation. In order to efficiently separate the above mixture on the ground and return it to the ground, it is possible to prevent the injection pipeline from becoming clogged, and for large-scale earth and sand that must be disposed on the ground, separate the cement liquid component. Then, there is provided a method for treating sediment and a liquid material for solidification using a rotary sieving apparatus which can be made non-mud and can be reused as an aggregate.

[0008]

In order to solve the problems of the above-mentioned conventional example, the rotary sieving apparatus of the present invention has a plurality of cylindrical bodies 2 having different diameters and having a large number of small holes 1 in the peripheral surface. The tubular body 2 having a small diameter is inserted into the tubular body 2, and the tubular body 2 is radially arranged with a plurality of gaps 9 interposed therebetween, and the small holes 1 provided on the peripheral surface of the tubular body 2 are provided in the tubular body 2. The smaller the diameter, the larger the diameter, and the larger the diameter of the cylinder 2, the smaller the diameter.
The present invention is characterized in that a rotating means 3 for rotating the adjacent tubular bodies 2 in different rotational directions of the adjacent tubular bodies 2 is provided.

[0009] It is also preferable to provide a vibrating means 5 for applying vibrations to the cylindrical body 2. Also,
A method of treating a mixture of earth and sand and a liquid material for solidification using a rotary sieving apparatus of the present invention includes a plurality of cylindrical bodies 2 having a large number of small holes 1 on the peripheral surface and different diameters, and a large diameter cylindrical body 2. The cylindrical body 2 having a small diameter is inserted thereinto, and the cylindrical body 2 is arranged in multiples in the radial direction with a gap 9 therebetween, and the small holes 1 provided on the peripheral surface of the multiple arranged cylinders 2 have a small diameter. The larger the diameter, the smaller the diameter of the cylinder 2 is set.
Rotating means 3 for rotating the fitting cylindrical body 2 in different rotation directions.
A rotary sieving device 6 is provided to mix the earth and sand and the liquid material for stirring while ejecting the liquid material for solidification in the ground to mix the earth and sand and the liquid material for solidification overflowing on the ground. 7 is put in the cylindrical body 2 having the smallest diameter of the rotary sieving apparatus 6 located on the ground, and the plurality of cylindrical bodies 2 are adjacent to each other by the rotating means 3.
It is characterized in that the mixture 7 is sieved by rotating so as to have different rotation directions , and that which has passed through the small holes 1 on the peripheral surface of the cylindrical body 2 of at least the maximum diameter is jetted again into the ground. .

[0010]

According to the apparatus of the present invention having the above-described structure, the cylindrical bodies 2 having different diameters and having the small holes 1 formed in the peripheral surface are provided with the gap 9 in the radial direction.
The small holes 1 provided in the circumferential surface of the cylindrical bodies 2 that are arranged in a multiple manner through the holes are set larger as the diameter of the cylindrical body 2 is smaller, and smaller as the diameter of the cylindrical body 2 is larger. Therefore, the object to be sieved is put in the cylindrical body 2 having the smallest diameter and the rotating means 3 is used.
When the tubular body 2 is rotated by, the cylindrical body 2 having the smallest diameter is swung by the rotation of the tubular body 2, and only the large diameter particles are left, and the small diameter hole 1 of the tubular body 2 has the next largest diameter. It falls into the cylindrical body 2 and is swung by the rotation of the cylindrical body 2 having the next largest diameter while falling only from the next largest particle diameter to the small hole 1 of the cylindrical body 2. Those having different particle diameters are separated by the cylindrical body 2 which rotates one after another. In this case, when the liquid content is included, the liquid content passes through the small holes 1 of each stage together with the liquid having the smallest particle size. Then, as the cylindrical body 2 rotates, the portion from which the object to be sieved is removed is positioned above due to the rotation, and the particles clogged in the small holes 1 fall into the cylindrical body 2 again and this portion is removed. Will be sieving again at the bottom without clogging.

Further , a plurality of cylindrical bodies 2 having different diameters are adjacent to each other.
Rotation means 3 for rotating the body 2 in different directions is provided.
As a result, the sieve to be sieved having a small particle diameter, which falls from the inner rotating tubular body 2, falls to one side of the lower portion in the next tubular body 2 due to the rotational inertia of the tubular body 2. By rotating the direction of rotation in the opposite direction, 2 acts to move the object to be sieved, which has fallen toward one side toward the other side, while being driven by the rotation, and as a result, inside the tubular body 2. The substantial sieving area of the material to be sieved can be widened.

Further, when the vibration applying means 5 for applying vibration to the cylindrical body 2 is provided, the sieving can be performed more favorably. Further, according to the method of treating a mixture of earth and sand and a liquid material for consolidation using the rotary sieving apparatus of the present invention,
In the ground, the liquid for solidification is ejected to mix the sand and the liquid for solidification with stirring, and the mixture 7 of the sand and liquid for solidification overflowing on the ground is stored in the rotary sieving apparatus 6 located on the ground. A plurality of cylinders 2 having different diameters are placed in the cylinder 2 having the smallest diameter.
By rotating the plurality of cylinders 2 by the rotating means 3 so that the adjacent cylinders 2 are rotated in different directions , the mixture 7 is sieved, and the small holes 1 on the peripheral surface of the cylinder 2 having at least the largest diameter. After passing through the ground, it is jetted again into the ground to separate the congealing liquid matter and the soil particles with a small particle size from the mixture 7 of the earth and sand and the congealing liquid matter, which is then grounded. Re-injection and recycle, the large particle size gravel is separated from the consolidating liquid matter and the small particle size soil particles, collected on the ground, and discarded as the consolidating liquid matter, Alternatively, the gravel having a large particle size is reused as an aggregate for construction.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. 1 and 2 show one embodiment of the present invention. A plurality of cylinders 2 having different diameters are arranged in a multiple manner with a small diameter cylinder 2 inserted in a large diameter cylinder 2 with a gap 9 therebetween. The cylindrical bodies 2 having different diameters are provided with a large number of small holes 1 on the peripheral surface. The small holes 1 are smaller in the smaller diameter cylinder 2 and larger in the larger diameter cylinder 2. That is, in the embodiment shown in FIGS. 1 and 2, the small hole 1 provided in the tubular body 2a having the smallest diameter is the largest and the small hole 1 provided in the tubular body 2b having the second largest diameter is the next largest. ,
The small hole 1 provided in the cylindrical body 2c having the largest diameter is set to have the smallest diameter. The cylindrical body 2 having the small holes 1 is made of metal,
It is conceivable that a punching board made of synthetic resin or the like is formed into a tubular shape, or a net body made of metal or synthetic resin is formed into a tubular shape. A large number of small holes 1 are formed.

A loading part 12 is inserted into an opening at one end of the cylindrical body 2a having the smallest diameter, and the material to be sieved is introduced from the charging part 12 into the tubular body 2a having the smallest diameter. ing. Here, as shown in FIG. 1, the other end portion of the tubular body 2a (the end portion on the side opposite to the side into which the inserting portion 12 is inserted) is the tubular body 2a.
It projects slightly outward from the other end of b, and
The other end of b projects slightly outward from the other end of the cylinder 2c.
I have.

The cylindrical body 2 which is multiply arranged in the radial direction is shown in FIG.
In the embodiment shown in (1), the rotation support means 11 supports the insertion portion 12 in an inclined state so as to be higher. Also,
A hopper-shaped or container-shaped receiving portion 13d is disposed over the entire length of the cylindrical body 2c below the cylindrical body 2c having the largest diameter. Receiving portions 13c, 13b, and 13a having a hopper shape, a container shape, or the like are provided at a lower rear position of the other end of the body 2b and a lower rear position of the other end of the cylindrical body 2a, respectively.

The plurality of cylinders 2 having different diameters are made to rotate in different directions. Specifically, the cylinders 2 adjacent in the radial direction are made to rotate in different directions. That is, when the cylindrical body 2c rotates clockwise, for example, the cylindrical body 2b rotates counterclockwise, and the cylindrical body 2a rotates clockwise. Here, in changing the rotation directions of the cylindrical bodies 2 that are adjacent to each other in the radial direction, for example, as shown in FIGS. 1 to 3, an outer peripheral gear 10 is provided on the outer peripheral surface of the cylindrical body 2c, and the inner peripheral surface of the cylindrical body 2c is The interlocking inner peripheral gear 14 is provided on the surface, the interlocking outer peripheral gear 15 is provided on the outer peripheral surface of the tubular body 2b, and the interlocking inner peripheral gear 16 is provided on the inner peripheral surface of the tubular body 2b. The interlocking outer peripheral gear 17 is provided on the outer peripheral surface of the cylindrical body 2c.
The drive gear forming the rotating means 3 meshes with the outer peripheral gear 10 of the intermediate gear 18, and the intermediate gear 18 includes the cylindrical body 2c and the cylindrical body 2b.
And the interlocking inner peripheral gear 14 and the outer peripheral gear 15 for interlocking, and the intermediate gear 19 is located between the cylindrical body 2b and the cylindrical body 2a. It meshes with the interlocking outer peripheral gear 17. Therefore, the cylinder 2c is rotated by rotationally driving the drive gear constituting the rotating means 3 by a motor or the like, and the cylinder 2c is rotated, so that the cylinder 2b is opposite to the cylinder 2c via the intermediate gear 18. When the cylinder 2b rotates in the direction, the cylinder 2a rotates in the direction opposite to the cylinder 2b (that is, the same direction as the cylinder 2c) via the intermediate gear 19.

Therefore, in the rotary sieving apparatus 6 shown in FIGS. 1 to 3 , the object to be sieved put in the cylindrical body 2a is the cylindrical body 2a.
While swinging in the cylindrical body 2a as it rotates, only those having a large particle diameter are left to fall from the small hole 1 of the cylindrical body 2 having the smallest diameter into the cylindrical body 2b having the next largest diameter. The sieved object dropped into the cylindrical body 2b having the next largest diameter is the cylindrical body 2
The cylindrical body 2b is swung by the rotation of the cylindrical body 2b which rotates in the direction opposite to the direction a, leaving only the next largest particle size.
From the small hole 1 into the cylindrical body 2c having the largest diameter,
Only those that pass through the small hole 1 of the cylindrical body 2c, while being swung by the rotation of the cylindrical body 2c that rotates in the opposite direction and leaving the next largest particle diameter, fall into the lower receiving portion 13d.
Also, as the cylindrical body 2a rotates, the one having the largest particle size remaining in the cylindrical body 2a moves to the other end side of the cylindrical body 2a and falls from the other end portion of the cylindrical body 2a into the receiving portion 13a. To do. Also, as the cylindrical body 2b rotates, the particles having the next particle size remaining in the cylindrical body 2b move to the other end side of the cylindrical body 2b and fall from the other end of the cylindrical body 2b into the receiving portion 13b. To do. Further, as the cylindrical body 2c rotates, the particles having the next particle size remaining in the cylindrical body 2c move to the other end side of the cylindrical body 2c and fall from the other end portion of the cylindrical body 2c into the receiving section 13c. To do. In this way, the particles are sorted according to the difference in particle size and collected in the receiving portions 13a, 13b, 13c, 13d. Here, in this embodiment, since the plurality of cylindrical bodies 2 having different diameters are rotated in different directions, the operation as shown in FIG. 3 is obtained. In other words, when the sieved object 20 put into the tubular body 2a rotates through the tubular body 2a as indicated by the arrow C of the solid line, when it passes through the hole 1 of the tubular body 2a and falls into the tubular body 2b. Due to the rotational inertia of the cylindrical body 2a, the overall tendency of the drop is to cause the cylinder body 2a to fall while being sloping upward to the left as indicated by the broken line arrow E, and falls to the area inside the cylindrical body 2b in FIG. However, since the cylindrical body 2b is rotating as indicated by the solid arrow d, the sieved object 20 that has fallen into the area inside the cylindrical body 2b is shaken in the solid arrow d direction by the rotation of the cylindrical body 2b in the solid arrow d direction. The particles are moved while moving, and meanwhile, small-sized particles or liquid are squeezed out from the holes 1 of the cylindrical body 2b. In this case, sieving is performed in a range wider than the falling area in the circumferential direction of the cylindrical body 2b. Further, when passing through the hole 1 of the tubular body 2b and falling into the tubular body 2c, the general tendency of the fall is caused by the rotational inertia of the tubular body 2b, and the article should be dropped while being sloping upward as shown by the broken arrow. And falls into the area inside the cylindrical body 2c in FIG. However, since the cylindrical body 2c is rotating as indicated by the solid arrow C, the sieved object that has fallen into the area inside the cylindrical body 2c is swung in the solid arrow C direction by the rotation of the cylindrical body 2b in the solid arrow C direction. While moving, the cylinder 2c in the meantime
The small-sized particles and liquid are sieved out from the hole 1 of the. Also in this case, the sieving is performed in a range wider than the falling area in the circumferential direction of the cylindrical body 2c.

By the way, in the embodiment shown in FIGS . 1 to 3, the cylindrical body 2c having the largest diameter is supported by two rotation supporting means 11 in the circumferential direction, and at least one of the two rotation supporting means 11 is supported. An example in which one of them is the rotation means 3 is shown, but in FIG. 4 , the cylindrical body 2c having the maximum diameter is supported by four rotation support means 11 in the circumferential direction, and four rotation support means 1 are provided.
An example is shown in which at least one or more of the number 1 is the rotation means 3. Of course, the cylindrical body 2c having the maximum diameter is supported by three or five or more rotation supporting means 11 in the circumferential direction,
At least one or more of the rotation supporting means 11 may be the rotation means 3.

In the embodiment shown in the accompanying drawings,
In constructing the rotary sieving apparatus 6 by arranging a plurality of cylinders 2 having different diameters in multiples through the gap 9, an example of arranging the rotary sieving apparatus 6 by arranging three cylinders 2 having different diameters in multiples However, two cylindrical bodies 2 having different diameters may be arranged in a multiple manner via the gap 9, or four or more different cylindrical bodies 2 may be arranged in a multiple manner via the gap 9.

In the embodiment shown in the accompanying drawings,
The sieving operation is performed while inclining the axis of the cylindrical body 2 and rotating the cylindrical body 2 to move the sieved object from one end side to the other end side of the cylindrical body 2. The axis of the body 2 may be horizontal. When the axis of the tubular body 2 is horizontal, the screw means is provided on the inner peripheral surface of the tubular body 2 so that the sieved object can be moved from one end side to the other end side of the tubular body 2 while rotating the tubular body 2. (Not shown) may be provided and moved by screw means. Needless to say, screw means may be provided on the inner peripheral surface of the cylindrical body 2 even if the axis of the cylindrical body 2 is inclined.

FIG. 5 shows still another embodiment of the present invention. In this embodiment, the vibration applying means 5 applies vibration to the rotating cylinder 2.
Here, the vibration imparting means 5 may be any one as long as it has a function of imparting vibration without impeding the rotation of the cylindrical body 2. Next, a method of treating a mixture of earth and sand and a liquid material for consolidation using the rotary sieving apparatus 6 as shown in each of the above examples will be described.

In FIG. 6, reference numeral 21 denotes a stirring and mixing machine. This stirring and mixing machine 21 has a hollow pipe-shaped shaft 23 rotated by a drive device 22 and arbitrary stirring means 25 such as blades and screws. Further, in the embodiment, the stirring mixer 21 has a drilling function, a bit 24 is provided at the lower end of the shaft 23, and a jet port 26 is provided at an appropriate position of the bit 24 or the shaft 23. The shaft 23 may be uniaxial, polyaxial, or any shaft. In the case of multiple axes, they may be arranged in a straight line, or may be arranged in an arbitrary arrangement such as a polygon such as a triangle or a quadrangle, or an arc. In the case of a multi-axis, the upper end of each shaft 23 is connected to the multi-axis device, and the rotation of the drive device 22 is transmitted to each shaft 23 via the multi-axis device. In the figure, 27 is a hose which is connected to the shaft 23 for communication. The hose 27 is connected to a consolidating liquid supply device 28 for supplying a consolidating liquid product such as cement milk. Spout 26
It is designed to be supplied to and ejected. Reference numeral 6 in the drawing denotes a rotary sieving apparatus, and any one of the above-described rotary sieving apparatuses 6 is used. In the figure, 29 is a supply pipe for sucking and supplying a mixture of earth and sand and a liquid material for solidification to the end of the cylindrical body 2a having the smallest diameter of the rotary sieving device 6, and a pump 30 is provided on the way. Yes, the leading end is the input part 12.

Then, the ground 3 is stirred by using the stirring mixer 21.
In stirring and mixing the earth and sand in 1 and the congealing liquid, since the bit 24 is provided in the embodiment, the spout 26
While excavating while consolidating liquid material such as cement milk, or a consolidating liquid containing cement as the main component, or other consolidating liquid, the consolidating liquid with the earth and sand of the original ground excavated at the same time. The object is agitated and mixed by an agitating means 25 to form a pile-shaped body made of a mixture of earth and sand and a liquid material for consolidation in the ground 31. In this case, a part of the mixture of the earth and sand of the original ground and the liquid material for consolidation overflows to the ground surface according to the excavation, but the mixture of the earth and sand and the liquid material for consolidation overflows on the ground surface. It is sucked from one end and put into the one end of the cylindrical body 2a having the smallest diameter of the rotary sieving device 6. That is, in this example, the mixture of the earth and sand overflowing on the ground surface and the liquid material for solidification constitutes the sieve 20. The mixture 7 of soil and sand, which is the object to be sieved 20 and the liquid material for consolidation put into the cylindrical body 2a, is swayed in the cylindrical body 2a as the cylindrical body 2a rotates, and only a large particle size is obtained. While remaining, it falls from the small hole 1 of the cylindrical body 2 having the smallest diameter into the cylindrical body 2b having the next largest diameter. The mixture 7 of earth and sand and the liquid material for consolidating that has fallen into the cylindrical body 2b having the next largest diameter is oscillated by the rotation of the cylindrical body 2b while leaving only the next largest particle diameter. From the small hole 1 of the cylindrical body 2c into the cylindrical body 2c having the largest diameter, and while being swung by the rotation of the cylindrical body 2c, the one having the next largest particle diameter is passed through the small hole 1 of the cylindrical body 2c. It falls into the receiving portion 13d below.
Also, as the cylindrical body 2a rotates, the one having the largest particle size remaining in the cylindrical body 2a moves to the other end side of the cylindrical body 2a and falls from the other end portion of the cylindrical body 2a into the receiving portion 13a. To do. Also, as the cylindrical body 2b rotates, the particles having the next particle size remaining in the cylindrical body 2b move to the other end side of the cylindrical body 2b and fall from the other end of the cylindrical body 2b into the receiving portion 13b. To do. Further, as the cylindrical body 2c rotates, the particles having the next particle size remaining in the cylindrical body 2c move to the other end side of the cylindrical body 2c and fall from the other end portion of the cylindrical body 2c into the receiving section 13c. To do. In this way, the particles are sorted according to the difference in particle size and collected in the receiving portions 13a, 13b, 13c, 13d. Further, the liquid material for consolidation such as cement milk passes through the small holes 1 of the respective cylinders 2a, 2b, 2c and the receiving portion 1
Run down to 3d. Therefore, the receiving portion 13d is mainly composed of a liquid material for consolidation such as cement milk, and
A mixture of fine soil particles is collected, and sand with a small particle size is collected in the receiving portion 13c, and the receiving portion 13b
The sand having a large particle size is collected in, and the gravel such as gravel is collected in the receiving portion 13a. And the receiving part 1
Those mainly composed of a congealing liquid substance such as cement milk mixed with fine soil particles collected in 3d are sent to a consolidating liquid substance supplying device 28 through a pipe 34, where cement is added. Alternatively, water is added to adjust the concentration of the liquid material for consolidating, and the concentration is sent again to the shaft 23 and jetted into the ground from the jet port 26 to stir and mix with the earth and sand.

On the other hand, the gravel such as gravel collected in the receiving portion 13a, the sand having a large particle diameter collected in the receiving portion 13b, and the sand having a small particle diameter collected in the receiving portion 13c are all consolidated. It is collected separately for each particle size in a state where it is separated from the liquid material.These collected gravel such as gravel, sand with large particle size, and sand with small particle size are aggregates for civil engineering and construction, respectively. It can be reused as a resource for use.
Here, since the liquid material for consolidation is separated, there is no risk of hardening as a large lump, but it is preferable to wash separately the aggregate particles separately collected to wash away the cement components adhering to the aggregate particles. It should be set to. In recycling a liquid material for consolidation such as cement milk mixed with the fine soil particles, depending on the design value of the pile-shaped body to be formed in the ground 31, the state of the ground 31, etc. Part of the small-grained sand collected in the part 13c, the large-grained sand collected in the receiving part 13b, or the gravel collected in the receiving part 13a is mixed with the condensing liquid material together with it. It may be returned to the ground and mixed by stirring.

Further, gravel such as gravel collected in the receiving portion 13a, sand having a large particle diameter collected in the receiving portion 13b, and sand having a small particle diameter collected in the receiving portion 13c are aggregate resources. Can be reused as, but may be discarded without reuse. In such a case, since it is separated from the solidifying liquid as described above, it is easy to handle and transport, and even when it is thrown away, it is separated from the solidifying liquid to cause pollution. It is unlikely to be a cause and is not subject to restrictions when dumping. Of course, it is also possible to discard all the materials collected in the receiving portions 13a, 13b, 13c, if necessary, in the situation of the site or in the site where the receiving system is inadequate as an aggregate resource.

When the piles formed in the ground 31 are continuously formed as described above, a continuous wall can be formed in the ground 31. Such piles are used as a foundation for an upper structure, or as an underground water stop wall or a mountain stop wall, or as a ground improvement pile. In the above embodiment, an example of using the rotary sieving device 6 to separate a mixture of earth and sand and a liquid material for consolidation and returning a part of the separated product to the ground has been described. The rotary sieving device 6 can be used for separating various kinds of sieved materials other than the processing of the mixture of the earth and sand and the liquid material for consolidation.

[0027]

As described above, according to the present invention, a plurality of cylinders having a large number of small holes on the peripheral surface and having different diameters are inserted, and a cylinder having a small diameter is inserted into a cylinder having a large diameter. Multiple holes are arranged in the radial direction with a gap in between, and small holes provided on the circumferential surface of the multiple tubes are set so that the smaller the diameter of the cylinder, the smaller the diameter of the cylinder. Since the rotating means for rotating the cylinder is provided, the sieve to be sieved can be sieved in multiple stages by the multiple cylinders arranged, and moreover, the portion of the sieve to be sieved off by rotating is to be removed. The rotation causes it to move to the upper position, the particles clogged in the small holes fall into the cylinder again, and this part is again positioned at the lower position without clogging to perform sieving. It is capable of sieving in multiple stages while preventing clogging. . Moreover, multiple cylinders with different diameters
Rotating means for rotating the adjacent cylinders in different rotation directions
Since it is provided, the particle size falling from the inner rotating cylinder
The sieving body with a small
The lower part of the cylinder falls toward one side, but the cylinder rotates
By turning the direction in the opposite direction, the covered cover that has dropped to one side
Move one item to the other side while being driven by the rotation.
It has the effect of moving it, and as a result,
The effective sifting-off area of the sieve can be widened,
It is capable of efficient sieving.

Further, when the vibration applying means for applying vibration to the cylindrical body is provided, the sieving can be performed more favorably. Further, according to the method for treating a mixture of earth and sand and a liquid for caking using the rotary sieving apparatus of the present invention, the earth and sand and a liquid for agitation are stirred while ejecting the liquid for a solid in the ground. Mix and put the mixture of earth and sand and the liquid material for consolidation into the cylinder with the smallest diameter of the rotary sieving device located on the ground, and the cylinders with different diameters by the rotating means.
By rotating the body by changing the rotation direction of the adjacent cylinders ,
By sieving the mixture and ejecting it into the ground again after passing through the small holes on the peripheral surface of the cylindrical body of at least the maximum diameter, it becomes a cement liquid from the mixture of the earth and sand and the liquid material for consolidation. Liquid for solidification and soil particles with small particle size are separated and re-injected into the ground for recycling, and gravel with large particle size is separated from liquid material for solidification and soil particle with small particle size. hand,
It is collected on the ground and can be discarded as a consolidating liquid material such as cement liquid, or can be reused as gravel with a large particle size as an aggregate for construction. It may dumping gravel or the like, that are separate from the consolidating liquid material, easy to handle and transport etc. effortless state, and are not even less subject restriction on dumping, in particular, sieving
The cover with a small particle size is dropped from the inner rotating cylinder.
One of the lower parts of the next cylinder is
Of the cylinder falls to one side, but the cylinder rotates in the opposite direction.
By doing so, one of the sieved objects that has dropped to one side of the other
Move to one side while following along with rotation
Of the sieved object, and as a result,
Wide qualitative sieving area, efficient sieving
Ru Der what can drop.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the device of the present invention.

FIG. 2 is a front view of the above.

FIG. 3 is a diagram for explaining the operation of the same.

FIG. 4 is a front view of another embodiment of the above.

FIG. 5 is a partially cutaway perspective view of still another embodiment of the same.

[Fig. 6] For solidification with earth and sand using the rotary sieving device of the above
Schematic explanation for explaining a method of treating a mixture with a liquid substance
FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Small hole 2 Cylindrical body 3 Rotating means 5 Vibration imparting means 6 Rotary sieving device 7 Mixture 9 Gap

Claims (3)

[Claims] 1. A plurality of cylindrical bodies having a large number of small holes on the circumferential surface and having different diameters are inserted into a cylindrical body having a large diameter, and the cylindrical bodies are multiply arranged with a gap in the radial direction. increasing the small holes provided in the peripheral surface of the cylindrical body disposed in said multiplexing as those diameter of the cylinder is small, set smaller ones diameter of the cylinder is large, double
A rotary sieving apparatus comprising: rotating means for rotating cylindrical bodies having different numbers of diameters by changing the rotational directions of adjacent cylindrical bodies . 2. The rotary sieving apparatus according to claim 1, further comprising vibration applying means for applying vibration to the cylindrical body. 3. A plurality of cylinders having a large number of small holes on the peripheral surface and having different diameters are inserted into a cylinder having a large diameter, and the cylinders having a small diameter are arranged in multiple layers with a gap in the radial direction. increasing the small holes provided in the peripheral surface of the cylindrical body disposed in said multiplexing as those diameter of the cylinder is small, set smaller ones diameter of the cylinder is large, double
A rotating sieving device is formed by providing rotating means for rotating the cylindrical bodies having different numbers of diameters by changing the rotational directions of the adjacent cylindrical bodies .
The maximum diameter of the rotary sieving device that mixes the sediment and the liquid for solidification while jetting the liquid for solidification in the ground with stirring and mixes the mixture of the solid and sand for the solid on the ground Inside a small cylinder, and use a rotating means to place multiple cylinders next to each other.
A rotating sieving device characterized by sieving the mixture by rotating the cylinders in different rotation directions and ejecting those that have passed through the small holes on the peripheral surface of at least the maximum diameter cylinder again into the ground. A method for treating a mixture of earth and sand and a liquid material for consolidation.