JPH1099782A - Pretreating device for soil improving equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the classification treatment capability of a pretreating device of soil improving equipment. SOLUTION: A rotary cylinder 14 having screen openings 15 on its outer peripheral part is freely drivably and rotatably supported on a main body frame 11. Plural agitating vanes 14 are freely drivably and rotatably supported in this rotary cylinder 14. Cutting force, rotating force, friction force, etc., are acted by rotation of the rotary cylinder 14 and the agitating vanes 14 on the soil A which is carried in by a carrying-in conveyor 30 and is before the preliminary classification. The soil C after the pretreatment is discharged from the screen openings 15 to a transfer conveyor 38. On the other hand, inclusions B are discharged from a chute 32 to a transfer conveyor 34. The classification is thus executed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pretreatment device for soil improvement equipment, and is used for separating stone and soil at a quarry, for separating waste materials and concrete gala at a construction site, and for separating steel bars and soil. What can be applied.

[0002]

2. Description of the Related Art As a conventional pretreatment device for soil improvement equipment, for example, a device using a rotary bucket, a device using a grizzly machine, and a device using a rotary sieve device are known.

FIG. 4 schematically shows a pretreatment device for a conventional soil improvement facility using a rotary bucket, FIG. 5 shows a top view of a rotary bucket, FIG. 6 shows an outline of a soil improvement facility, and FIG. 8 is a side view of a pretreatment device of a soil improvement facility, FIG. 8 is a plan view of a grizzly machine, FIG. 9 is a side view of a pretreatment device of a conventional soil improvement facility using a rotary sieving device,
FIG. 10 is a top view of the rotary sieve device, and FIG.
XI cross section is shown.

In a conventional pretreatment apparatus for soil improvement equipment using a rotary bucket, as shown in FIGS. 4 to 6, a rotary bucket 103 as an attachment is attached to a tip of an arm 102 of a heavy equipment 101 such as a backhoe. The rotary bucket 103 has a plurality of blades 103c mounted in a bucket 103a by a shaft 103b. In addition, a conveyor 10 extended to soil improvement facilities (not shown)
A hopper 105 is provided at the base end of the fourth.

[0005] Therefore, soil A before pre-sorting mixed with contaminants B such as large blocks and wood chips is transported from a construction site or the like to a plant site by a dump truck and stocked, and the heavy equipment 101 operates the arm 102 to operate the arm 102. Rotary bucket
This soil S is taken in by 103, and the contaminant B is removed from this soil A by the rotating blade 103c. Then, the pretreated soil C from which the contaminants B have been removed is put into the hopper 105 and sent to the main body line of the soil improvement facility by the conveyor 104.

In a conventional pretreatment apparatus for soil improvement equipment using a grizzly machine, as shown in FIGS. 7 and 8, a conveyor 20 extended to a soil improvement equipment not shown is shown.
1 is supported by a base 202, and a hopper 203 is provided at the base end of the conveyor 201. The hopper 203 has a large number of grinders 204 mounted therein, and a lower portion thereof is supported by a gantry 205 via a spring 206. The gantry 205 is provided with a vibrator 207 for the hopper 203. And hopper 20
A conveyor 208 that moves in a direction intersecting with the conveyor 201 is provided on the unloading side of the conveyor 3, and a cover 209 is attached to a side portion of the conveyor 208.

[0007] Therefore, soil A before pre-sorting containing contaminants B such as large lumps and wood chips is transported from a construction site or the like to a plant site by a dump truck and stocked, and put into a hopper 203 by a heavy machine (not shown). Then, it is separated by a large number of grizzlies 204. That is, the pretreated soil C that has dropped on the conveyor 201 after passing through a large number of grizzlies 204 is sent by the conveyor 201 to the main body line of the soil improvement facility, while the contaminant B is
It moves along 204 and is carried out onto the conveyor 201, and is conveyed by the conveyor 201 to a place where the stock is temporarily stored.

Further, in a conventional pretreatment apparatus for soil improvement equipment using a rotary sieving apparatus, as shown in FIGS. 9 to 11, a plurality of support rollers 303 are mounted on a base 301 by brackets 302. A rotating cylinder 304 is rotatably supported on the plurality of support rollers 303. The rotating cylinder 304 is configured by connecting three ring portions 304a, 304b, 304c by a number of connecting rods 304d, and attaching a grid-shaped sieve 305 to the outer peripheral portion. And
A driven sprocket 306 is fixed to the ring portion 304c of the rotary cylinder 304, while a drive motor 307 is mounted on the gantry 301 adjacent to the rotary cylinder 304, and the drive shaft 308 is attached to the drive shaft 308.
A chain 310 is wound around the driving sprocket 309 and the driven sprocket 306.

A carry-in conveyor 311 and a hopper 312 are provided on the rotary cylinder 304 on the side of the ring portion 304a. On the other hand, a chute 313 is attached to the ring portion 304c side of the rotating cylinder 304, and a transfer conveyor 314 that moves in a direction intersecting with the carry-in conveyor 311 is provided.A cover 315 is attached to a side portion of the transfer conveyor 314. ing. A pair of auxiliary conveyors 316a and 316b are attached below the ring portion 304b of the rotary cylinder 304, and the transfer conveyor 317 moves in a direction intersecting with the carry-in conveyor 311.
Is provided. In addition, a gantry 301 is provided on both sides of the rotating cylinder 304.
The cover 318 is attached to the.

Therefore, the soil A before the pre-sorting containing the contaminants B such as large blocks and wood chips is transported from a construction site or the like to a plant site by a dump truck and stocked, and put into a hopper 312 by a heavy machine (not shown). Then, it is separated by the rotating rotary cylinder 304. That is, when the drive motor 307 is driven, the rotary cylinder 304 rotates via the drive sprocket 309, the chain 310, and the driven sprocket 306. The soil A before pre-sorting put into the hopper 312 is carried into the rotating cylinder 304 rotated by the carry-in conveyor 311, where it is subjected to the sorting process by the sieve 305.
Then, the soil C after the pretreatment passes through the sieve 305, falls on the transfer conveyor 317 via the auxiliary conveyors 316a and 316b, and is sent to the main body line of the soil improvement facility by the transfer conveyor 317. On the other hand, the contaminant B is carried out from the rotating cylinder 304 via the chute 313 onto the transfer conveyor 314,
The conveyor 314 transports the paper to a temporary stocking location.

[0011]

However, the above-mentioned conventional pretreatment apparatus for each soil improvement facility has various problems in terms of working space, labor costs, processing capacity, and the like.

That is, in the conventional pretreatment device of the soil improvement equipment using the rotary bucket shown in FIGS. 4 to 6, the rotary bucket 103 of the heavy equipment 101 separates the soil A before the pre-separation into the contaminant B and the contaminant B. Although the soil is separated from the soil C after the processing, the rotary bucket 103 has a limit in the amount of pre-processing. On the other hand, the processing capacity of the soil improvement facility is almost constant, and it is necessary to secure sufficient pretreatment capacity with respect to the processing capacity of the soil improvement facility in order to increase the working capacity. For this reason, the processing capacity must be increased by increasing the number of heavy machines 101 equipped with the rotary buckets 103, and a large processing space is required, work efficiency is not good, and operating personnel for operating the heavy machines 101 are also required. As a result, labor costs increased and the working environment for working personnel was not good. The rotary bucket 103 of the heavy equipment 101 is
The separation process is performed by the blade 103c rotating inside 3a, the blade 103c is frequently damaged and abraded frequently with respect to the processing capacity, and the replacement cost is high. There is also a problem that efficiency is reduced.

Further, in the pretreatment device of the conventional soil improvement equipment using the grizzly machine shown in FIGS. 7 and 8, soil A before pre-sorting is mixed with contaminant B by each grizzly 204 in the hopper 203. Although it is separated into the soil C after the pre-treatment, since each of the grizzly 204 is fixed in the hopper 203, the force acting on the soil A before the pre-sorting for the separation is transferred into the hopper 203 by a heavy machine. There is a problem that only the force acting by the free fall when being thrown in, for example, a soil having a high water content or a clay-based soil cannot be sufficiently separated. Therefore, in this case, the hopper 2 is
Although the grinder 204 is vibrated and separated together with 03, the magnitude and direction of the vibrating force acting on the soil A before pre-separation in the hopper 203 are limited in the vibrator 207, and a sufficient processing capacity is secured. There is a problem that you can not.

Further, in the pretreatment device of the conventional soil improvement equipment using the rotary sieving device shown in FIGS. 9 to 11, soil A before pre-sorting is carried into the rotating rotary cylinder 304,
The soil A before the pre-sorting is mixed with the contaminant B by the sieve 305.
And the soil C after the pre-treatment, the only force acting on the soil A before the pre-separation for separation is the force due to the rotational force of the rotary cylinder 304, and as described above, There is a problem that soil of a specific ratio or clay-based soil cannot be loosened in the rotary cylinder 304, and cannot be reliably separated.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a pretreatment device for a soil improvement facility with an improved separation processing capacity.

[0016]

SUMMARY OF THE INVENTION A pretreatment apparatus for soil improvement equipment according to the present invention for achieving the above object is a pretreatment apparatus for soil improvement equipment for removing contaminants from soil before soil improvement in advance. A rotatable cylinder having a carry-in portion for carrying soil before soil improvement in one axial direction, a carry-out portion for carrying out contaminants on the other side, and a sieve in the outer peripheral portion is rotatably supported on the main body frame. The stirring blade is rotatably supported in the rotary cylinder.

Therefore, when the soil before the soil improvement is carried into the rotary cylinder driven and rotated by the main body frame from the loading portion, the soil before the soil improvement is agitated by the stirring blade driven and rotated in the rotary cylinder, and the cutting force is reduced. , Rotational force, frictional force, etc., and the soil after pre-treatment is discharged from the sieve at the outer periphery to the outside of the rotating cylinder, while the contaminants are discharged from the discharge section, and the soil before soil improvement is improved. As a result, the contaminants are reliably removed and the separation is completed.

Further, in the pretreatment device for soil improvement equipment of the present invention, the stirring blade can be rotated forward and backward at an arbitrary rotation speed.

Therefore, by changing the number of revolutions and the direction of rotation of the stirring blade according to the type of soil carried in from the carrying-in portion of the rotary cylinder, efficient separation becomes possible.

Further, in the pretreatment device for soil improvement equipment of the present invention, a plurality of the stirring blades are provided, and are selectively rotatable.

Accordingly, it is possible to reliably stir and separate the soil having a high water content or the clay-based soil.

Further, in the pretreatment apparatus for soil improvement equipment according to the present invention, the rotating cylinder can be rotated forward and backward at an arbitrary rotation speed.

Therefore, by changing the number of rotations and the direction of rotation of the rotary cylinder according to the type of soil carried in from the loading section of the rotary cylinder, efficient sorting becomes possible.

Further, in the pretreatment apparatus for soil improvement equipment according to the present invention, the sieve has a slit shape or a grid shape of a desired size for separation.

Therefore, it is possible to remove contaminants from the soil before soil improvement and to carry out only the soil after the pre-treatment through the slit-shaped or lattice-shaped sieve without fail.

Further, in the pretreatment apparatus for soil improvement equipment of the present invention, a tilt support mechanism for adjusting a tilt angle of a main frame supporting the rotary cylinder in an axial direction of the rotary cylinder is provided. It is assumed that.

Therefore, by adjusting the tilt angle of the rotary cylinder by the tilt support mechanism, the mixture separated in the rotary cylinder can be reliably discharged from the discharge section.

[0028] In the pretreatment apparatus for soil improvement equipment of the present invention, an adhering matter removing mechanism for removing adhering matter by contacting the sieve is provided around the outer periphery of the rotary cylinder. Things.

Therefore, the deposit removing mechanism contacts the sieve of the rotary cylinder and removes the deposit, so that the sieve does not clog the soil and the like, and a stable processing capacity is always secured. .

In the pretreatment apparatus for soil improvement equipment according to the present invention, a hopper for introducing soil before soil improvement and a soil introduced into the hopper are carried into the rotation cylinder in a loading section of the rotary cylinder. While a carry-in conveyor is provided, a chute for carrying out the separated contaminants and a transfer conveyor for carrying the contaminants carried out of the chutes to a predetermined position are provided at a carry-out portion of the rotary cylinder, and a sieve for the rotary cylinder is provided. A transfer conveyor for transporting the separated soil is provided below the eyes.

Therefore, when the soil before the soil improvement is put into the hopper, it is carried into the inside of the rotary cylinder from the carry-in portion by the carry-in conveyor, and is subjected to the sorting process. While being transferred to a predetermined position by the transfer conveyor, the soil separated by the sieves of the rotary cylinder passes through the sieve and falls on the transfer conveyor, and is moved to the predetermined position by the transfer conveyor. Is transferred to

Further, in the pretreatment apparatus for soil improvement equipment of the present invention, a magnetic separator for removing a metal object is provided near each of the transfer conveyors.

Therefore, the metal objects are removed by the magnetic separator on each transfer conveyor, so that more effective sorting can be performed.

[0034]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a side view of a pretreatment device for soil improvement equipment according to an embodiment of the present invention, FIG. 2 is a plan view of a pretreatment device for soil improvement equipment, and FIG. 3 is a cross-sectional view taken along the line III-III of FIG. Show.

In the pretreatment apparatus for soil improvement equipment of the present embodiment, as shown in FIGS. 1 to 3, a plurality of support rollers 13 are rotatably mounted on a plate-shaped main body frame 11 by brackets 12. A rotating cylinder 14 is rotatably supported on the plurality of support rollers 13. The rotary cylinder 14 has three ring portions 14a, 14b,
14c are connected by a number of connecting rods 14d, and a lattice-shaped (or slit-shaped) sieve 15 is attached to the outer peripheral portion to form a rotor screen. A driven sprocket 16 is fixed to the ring portion 14 c of the rotary cylinder 14, while a drive motor 17 is mounted on the main body frame 11 adjacent to the rotary cylinder 14, and a drive shaft 18 is provided.
A drive sprocket 19 is fixed to the drive sprocket 19 and the driven sprocket 16
It is multiplied by zero.

Accordingly, when the driving motor 17 is driven, the driving force is transmitted to the driven sprocket 16 via the driving sprocket 19 of the driving shaft 18 and the chain 20, and the rotary cylinder 14 is rotated. By controlling the driving, the rotating cylinder 14 can be rotated forward and backward at an arbitrary rotation speed.

The main body frame 11 has a ring portion 14.
a, a pair of support frames 21a, 21
b is attached, and the shaft end of a rotating shaft 22 penetrating through the inside of the rotating cylinder 14 is rotatably supported by brackets 23a, 23b hanging from the support frames 21a, 21b. The wing 24 is fixed. A driven sprocket 25 is fixed to one shaft end of the rotating shaft 22, a driving motor 26 is mounted on the main body frame 11, and a driving sprocket 28 is fixed to a driving shaft 27. A chain 29 is wound around the driving sprocket 28 and the driven sprocket 25.

Accordingly, when the driving motor 26 is driven, the driving force is transmitted to the driven sprocket 25 via the driving sprocket 28 of the driving shaft 27 and the chain 29, and the respective stirring blades 24 fixed to the rotating shaft 22 rotate. In other words, by controlling the drive of the drive motor 26, each of the stirring blades 24 can be rotated forward and backward at an arbitrary rotation speed. Although the plurality of stirring blades 24 fixed to one rotation shaft 22 are rotated by the drive motor 26, the plurality of stirring blades 24 may be independently rotatable.

On the ring portion 14a side of the rotary cylinder 14, a carry-in conveyor 30 is mounted and a hopper 31 is provided, and soil A before pre-sorting mixed with contaminants B such as large blocks and wood chips is provided. A loading section is configured. On the other hand, a chute 32 and a magnetic separator 33 are provided on the side of the ring portion 14 c of the rotary cylinder 14, and a transfer conveyor 34 that moves in a direction intersecting with the carry-in conveyor 30 is provided below the chute 32. Cover 35 on the side of
Is attached, and constitutes a discharge section for the contaminant B separated from the soil A before the pre-sorting. Below the ring portion 14b of the rotary cylinder 14, a pair of auxiliary conveyors 36a,
A transfer conveyor 38 is provided below the auxiliary conveyors 36a and 36b. The transfer conveyor 38 is moved below the auxiliary conveyors 36a and 36b in a direction crossing the carry-in conveyor 30. In addition, covers 39 are attached to the main body frame 11 on both sides of the rotary cylinder 14.

Brackets 40a and 40b are fixed to the upper portions of the support frames 21a and 21b, respectively, and a brush roller 41 is provided on the brackets 40a and 40b as an attached matter removing mechanism. By bringing the rotary cylinder 14 into contact with and rotating with the sieve 15, the deposits on the sieve 15 can be removed.

The main body frame 11 supporting the rotary cylinder 14 can be tilted by a tilt support mechanism, and the tilt angle of the rotary cylinder 14 in the axial direction can be adjusted. That is, the rotating cylinder 1 in the main body frame 11
A support bracket 42 is fixed to a lower surface of the ring bracket 14 on the side of the ring portion 14c.
2 is connected rotatably by a connection shaft 44.
A screw shaft 45 is fixed to the lower surface of the rotary cylinder 14 on the ring portion 14 a side of the main body frame 11, and a lower portion of the screw shaft 45 is a central portion of a rotary handle 47 rotatably mounted on an upper portion of a support base 46. Is screwed into. Therefore,
When the rotary handle 47 is rotated, the screw shaft 45 moves up and down due to the screwing relationship, so that the main body frame 11 is tilted with the connecting shaft 44 as a fulcrum, and the tilt angle of the rotary cylinder 14 can be adjusted.

Therefore, the soil A before pre-sorting containing the contaminants B such as large blocks and wood chips is transported from a construction site or the like to a plant site by a dump truck and stocked, and is put into the hopper 31 by a heavy machine (not shown). Then, the contaminant B and the pretreated soil C are separated by the rotating rotary cylinder 14.

That is, when the drive motor 17 is driven, the drive sprocket 19, the chain 20, the driven sprocket 1
6, the rotary cylinder 14 rotates, and the drive motor 26
, The drive sprocket 28, the chain 29,
The rotating shaft 22 and each stirring blade 24 rotate via the driven sprocket 25. In this state, when the soil A before the pre-sorting is put into the hopper 31, the soil A before the pre-sort is carried into the rotating cylinder 14 which is rotated by the carry-in conveyor 30. Will be received. That is, the soil A before the pre-sorting has a frictional force between the sieve 15, a frictional force between the soils A before the pre-sorting, a cutting force between the rotary cylinder 14 and each stirring blade 24, and the like. By receiving the external force, the bond between the substances in the soil A before the pre-sorting is released, the soil and large blocks, wood chips, and the like are separated, and a desired pre-sorting process is performed.

The rotating cylinder 14 and the respective stirring blades 24 can be rotated forward and backward at an arbitrary rotation speed by an inverter control device (not shown), and are set according to the type of soil A before being sorted into the rotating cylinder 14 before being sorted. The effective pre-sorting process can be performed. And the rotating cylinder 14
When performing the sorting process of the soil A before the pre-sorting by the rotation of the stirring blades 24, the brush roller 41 comes into contact with the sieve 15 of the rotary cylinder 14 and rotates together with the sieve.
5 are removed, and the pre-sorting capacity can be kept constant.

As described above, when the bond between the substances of the soil A before the pre-sorting is released and the soil and the large blocks, the wood chips, etc. are separated, the soil C after the pre-treatment is removed from the rotary cylinder 22 through the sieve 15. , And falls on the transfer conveyor 38 via the auxiliary conveyors 36a and 36b. Then, it is sent to the main body line of the soil improvement equipment (not shown) by the transfer conveyor 38. On the other hand, the contaminant B is carried out from the rotary cylinder 14 onto the transfer conveyor 34 via the chute 32, and is conveyed by the transfer conveyor 34 to a place where the stock is temporarily stored.
At this time, the soil C after the pretreatment is supplied to the auxiliary conveyors 36a and 36a.
Metal objects such as iron pieces are eliminated by the magnetic separators 37a and 37b on b, and metal objects such as iron pieces are eliminated from the contaminant B by the magnetic separator 35 on the chute 32.

The rotating handle 47 is rotated to vertically move one end of the main body frame 11 via the screw shaft 45, and the inclination angle of the rotating cylinder 14 is adjusted to an appropriate angle. C and contaminants B are properly transferred to each conveyor 34, 38.
Can be carried out.

[0048]

As described above in detail with reference to the embodiments, according to the pretreatment apparatus for soil improvement equipment of the present invention, the apparatus has a carry-in section for carrying soil before soil improvement in one axial direction, On the other hand, a rotating cylinder having an unloading section for unloading contaminants and having a sieve on the outer periphery is rotatably supported on the main body frame, and the stirring blade is rotatably supported in the rotating cylinder. On the soil before soil improvement carried into the cylinder, the cutting force, rotational force, frictional force, etc. act on the rotating rotary cylinder and stirring blades to ensure that the contaminants and the soil after pretreatment are reduced in a short time. As a result, the separation processing capacity can be improved.

Further, according to the pretreatment device of the soil improvement equipment of the present invention, the stirring blade can be rotated forward and backward at an arbitrary rotation speed, so that the stirring blade can be rotated depending on the type of soil carried in from the loading portion of the rotary cylinder. By changing the number of rotations and the direction of rotation of, efficient separation can be made possible.

Further, according to the pretreatment device of the soil improvement equipment of the present invention, since a plurality of stirring blades are provided so as to be selectively rotatable, it is possible to surely remove soil having a high water content or clay-based soil. Can be separated by stirring.

Further, according to the pretreatment device of the soil improvement equipment of the present invention, since the rotating cylinder can be rotated forward and backward at an arbitrary rotation speed, the rotating cylinder can be rotated depending on the type of soil carried in from the loading portion of the rotating cylinder. By changing the number of rotations and the direction of rotation, efficient sorting can be performed.

Further, according to the pretreatment apparatus of the soil improvement equipment of the present invention, the sieve is formed into a slit or grid for separation of a desired size. Only the later soil can be reliably carried out from the slit-shaped or lattice-shaped sieve.

Further, according to the pretreatment device of the soil improvement equipment of the present invention, since the tilt support mechanism for adjusting the tilt angle of the main frame supporting the rotary cylinder in the axial direction of the rotary cylinder is provided,
By adjusting the tilt angle of the rotary cylinder by the tilt support mechanism, the mixture separated in the rotary cylinder can be reliably discharged from the discharge section.

Further, according to the pretreatment device of the soil improvement equipment of the present invention, since the extraneous matter removing mechanism for removing extraneous matter by contacting the outer periphery of the rotary cylinder with the sieve is provided. By removing the deposits in contact with the sieve of the rotating cylinder, the sieve does not clog the soil or the like, and a stable processing capacity can always be ensured.

Further, according to the pretreatment apparatus of the soil improvement equipment of the present invention, a hopper and a carry-in conveyor for charging soil before soil improvement are provided in the carry-in portion of the rotary cylinder, and the hopper after separation is provided in the carry-out portion of the rotary cylinder. A chute and transfer conveyor for carrying out contaminants are provided, and a transfer conveyor for conveying soil after separation is provided below the sieve of the rotating cylinder.Therefore, soil before soil improvement is carried into the rotating cylinder and mixed after separation. Objects or sorted soil can be efficiently carried out.

According to the pretreatment device of the soil improvement equipment of the present invention, since the magnetic separator for removing the metal objects is provided near each transfer conveyor, the metal objects can be easily removed on the transfer conveyor by the magnetic separator. It can be removed to allow for more effective sorting.

[Brief description of the drawings]

FIG. 1 is a side view of a pretreatment device of a soil improvement facility according to an embodiment of the present invention.

FIG. 2 is a plan view of a pretreatment device of a soil improvement facility.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a schematic view of a conventional pretreatment device for a soil improvement facility using a rotary bucket.

FIG. 5 is a top view of the rotary bucket.

FIG. 6 is a schematic diagram of a soil improvement facility.

FIG. 7 is a side view of a pretreatment device of a conventional soil improvement facility using a grizzly machine.

FIG. 8 is a plan view of the grizzly machine.

FIG. 9 is a side view of a pretreatment device of a conventional soil improvement facility using a rotary sieving device.

FIG. 10 is a top view of the rotary sieve device.

FIG. 11 is a sectional view taken along line XI-XI of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Main body frame 14 Rotating cylinder 15 Sieve 17 Drive motor 22 Rotating shaft 24 Stirrer blade 26 Drive motor 30 Carry-in conveyor 31 Hopper 32 Chute 33 Magnetic separator 34 Transfer conveyor 36a, 36b Auxiliary conveyor 37a, 37b Magnetic separator 38 Transfer conveyor 41 Brush 45 Screw shaft 47 Rotation handle

Claims (9)

[Claims] 1. A pretreatment device for a soil improvement facility for removing contaminants from soil before soil improvement in advance, wherein the pretreatment device has a carry-in section for carrying soil before soil improvement in one axial direction and a contaminant on the other side. A soil improvement facility comprising: a rotating cylinder having an unloading portion for unloading and having a sieve in an outer peripheral portion thereof is rotatably supported on a main body frame, and a stirring blade is rotatably supported in the rotating cylinder. Pretreatment equipment. 2. The pretreatment apparatus for soil improvement equipment according to claim 1, wherein said stirring blade can be rotated forward and backward at an arbitrary rotation speed. 3. The pretreatment apparatus for soil improvement equipment according to claim 1, wherein a plurality of said stirring blades are provided and are selectively rotatable. 4. The pretreatment device for soil improvement equipment according to claim 1, wherein said rotary cylinder can rotate forward and backward at an arbitrary rotation speed. 5. The pretreatment device for soil improvement equipment according to claim 1, wherein said sieve has a slit shape or a grid shape for separation of a desired size. 6. The pretreatment device for soil improvement equipment according to claim 1, further comprising an inclination support mechanism for adjusting an inclination angle of a main frame supporting the rotation cylinder in an axial direction of the rotation cylinder. Pretreatment equipment for soil improvement equipment characterized by the following. 7. The pretreatment device for soil improvement equipment according to claim 1, wherein an adhering matter removing mechanism is provided around the outer periphery of the rotary cylinder to remove the adhering matter by contacting the sieve. Pretreatment equipment for soil improvement facilities. 8. The pretreatment device for soil improvement equipment according to claim 1, wherein a hopper for introducing soil before soil improvement is provided to a carry-in portion of the rotary cylinder, and soil supplied to the hopper is stored in the rotary cylinder. While a carry-in conveyor for carrying in is provided, a chute for carrying out separated contaminants and a transfer conveyor for carrying contaminants carried out from the chute to a predetermined position are provided in a carry-out portion of the rotary cylinder, and the rotating cylinder is provided. A pre-processing device for soil improvement equipment, wherein a transfer conveyor for conveying separated soil is provided below the sieve. 9. A pretreatment device for soil improvement equipment according to claim 8, wherein a magnetic separator for removing metal objects is provided near each of said transfer conveyors. .