JP2007038112A - Soil sorting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil sorting apparatus enabling an easy sorting of excavated soil without relation to the soil property and also a separation of the soil adhered with a certain level of power in consideration of a recycle to a maximum extent without any disposal, and a request of a decrease of a new soil excavation or the like since in various civil engineering and construction works there are many soil excavation works, the excavated soil should be scrapped, but at present repository sites decrease also extremely. <P>SOLUTION: The apparatus comprises a hopper, a mesh cylindrical body, and a receptor. The mesh cylindrical body is rotation-driven, on which a rotary shaft rotation-driven is provided. Many stirrers are attached to the rotary shaft. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a soil sorting apparatus.

  In various civil engineering construction works, soil is often excavated. There is no problem if the soil can be reused as it is, but there are many soils that are not. For example, the excavated soil cannot be backfilled as it is for various reasons.

  In such a case, it must be discarded, but now the number of disposal sites has been greatly reduced. There is also a demand to reuse as much as possible without disposal and reduce excavation of new soil.

  Therefore, it is desirable to reuse the excavated soil as much as possible. In some cases, it is only necessary to remove unnecessary things contained in the soil. For example, removal of plant roots, gravel, and garbage. The place where the plant grows cannot be used as it is because it contains so many roots. Therefore, the roots and the like are removed.

Such roots can be easily removed by hand using a sieve, but a large amount cannot be processed manually.
In addition, an apparatus that automatically vibrates with a large sieve is conceivable. However, since it does not come off even a little, the sorting efficiency is very poor.

  Therefore, a soil sorting device is provided that can easily sort excavated soil regardless of the soil quality, and can also separate soil that has been fixed with a certain amount of force.

  In view of the situation as described above, the present inventor has completed the soil sorting apparatus of the present invention as a result of earnest research, and its feature is that it comprises a hopper, a mesh cylindrical body, and a receiving portion. The mesh cylindrical body is rotationally driven, and the mesh cylindrical body is provided with a rotational shaft that is rotationally driven, and a number of stirring tools are attached to the rotational shaft.

The soil referred to here may be any soil, and is usually a mixture of plant roots, garbage, construction waste and other materials.
However, soil that does not contain anything other than such soil may be used. Even in such a case, the aggregate can be used for sorting.

  Here, the hopper is a portion for introducing soil or the like, and usually has a large inlet and a certain storage capacity. There are two types of hoppers: an open type without a lid so that it can be continuously charged, and a type with a lid that closes each time. An inclined bottom plate may be provided so that the soil does not fall directly on the mesh.

The mesh cylindrical body is a main body of the device of the present invention, and is a cylinder made of mesh. The term “mesh” as used herein simply means that there are a large number of holes, which may be net-like, woven, a plate provided with a large number of holes, or expanded metal. Moreover, the whole may be one or may be divided into a plurality of pieces.
The size of the hole is about 1 mm to 100 mm (preferably 5 to 40 mm), and may be determined depending on the size of the object to be removed. When removing the roots of the plant, it could be well separated with a pore size of 20 mm. It may be smaller for more precise separation.

  The size of the hole may be constant or varied as a whole cylinder. For example, the upstream half is a 20 mm hole and the remainder is 2 mm.

  The mesh cylindrical body may be provided with a lid at its tip (downstream) or may be completely open. In the case of opening, since a large thing can fall from the edge part, it is suitable for continuous operation. Moreover, the lid portion at the tip may be a mesh or may be opened and closed.

  Moreover, you may provide a flip-up board inside. This is because the soil or the like that accumulates in the lower part is raised to the upper part and is again brought into efficient contact with the stirring tool. One or a plurality of the flip-up plates may be provided.

  The mesh cylinder has a drive source for rotating. This may be a normal one such as a motor. The reason for the rotation is to efficiently carry out the stirring described later, to prevent clogging of the mesh holes, to facilitate dropping, and the like. It is also to help advance the contents. The rotational speed is free, but generally it may be slow, and several times to several tens of times / minute is sufficient. The rotation speed is preferably adjusted by using an inverter or the like.

Further, in order to facilitate advancement, the mesh cylindrical body may be inclined so as to lower the downstream side. As an inclination angle, although it is free, about 1 to 15 degree | times is suitable. Further, this inclination angle may be adjusted manually or automatically.
Depending on the input soil, the angle is changed and the efficiency is improved.

In many cases, the mesh cylindrical body is clogged as the eyes become finer. Therefore, in order to prevent this, a cleaning tool such as a brush can be provided outside the mesh. Size and number are free. If it does in this way, it will be automatically cleaned by rotation of a mesh cylinder.
For the same purpose, the mesh cylindrical body may be vibrated. Furthermore, a method of applying an impact sometimes or a method of hitting the surface with another member may be used.

The receiving part is a part that receives what is discharged and dropped from the hole of the mesh cylindrical body, and may be a simple receiving container. Further, this also includes a cover that covers the whole to be described later. Further, it may be a belt conveyor.
If the discharge from the mesh is fine, it often floats. In such a case, considering the working environment, it is easier to cover around the mesh cylindrical body and collect it with something like a cyclone dust collector or a bag filter. is there. Even in such a case, the larger one may be dropped downward in the cover and collected separately.
When using a cover, it is better to close the above-mentioned end part or to make a mesh structure.

  Moreover, when the front-end | tip (most downstream) of a mesh cylindrical body is open as mentioned above, you may provide the receiving part which receives what falls from there. Of course, it may be dropped on the ground as it is.

  The method of collecting such fallen objects and discharged materials may be determined according to the size and application of the discharged materials, and is not particularly limited.

A rotating shaft is provided in the mesh cylindrical body, and a number of stirring tools are attached to the rotating shaft. The shape of the stirring tool is not particularly limited. It is a simple bar shape, plate shape, curved plate shape, or the like. Depending on the material to be selected, the material may be a soft material such as rubber, which is not crushed as much as possible, and which is focused on “unraveling” work, or a steel material that considers some degree of crushing. Further, a material having higher hardness may be used.
In short, any material can be used. As described above, stirring here includes crushing. That is, crushing may be performed with a stirring tool.
As a mounting position of the stirring tool, a plurality of the stirring tools may be provided at positions where the orientation is different at the same distance from the entrance of the rotating shaft, or only one may be provided at the same distance. Providing a plurality at equal distances means providing them at four locations of 0 degrees, 90 degrees, 180 degrees, and 270 degrees.
Further, it may be arranged in a spiral shape to have a screw-like structure.
It is not necessary for all the stirring tools to have the same structure and the same size, and different stirrers may be provided at random or may be sequentially changed.

The stirrer may be fixed directly to the shaft, but is preferably bolted so that it can be easily replaced if broken.
Further, the number and density of the stirring tools, their mounting positions, etc. are free. It may be uniform or changed as a whole. For example, a plate-like body having a small width is attached to the whole in a spiral shape. There is also a method of fixing the blades at random.
Further, there is a method in which the stirrer is initially spaced and gradually narrowed.

  The rotating shaft for fixing the stirrer is rotated by a rotation drive source, and the rotation speed is free. However, as in the case of the mesh cylindrical body, a few times to several hundreds of times / minute is sufficient. It is preferable that the rotation speed can be adjusted by using an inverter or the like. As for the rotation direction, the rotation axis and the mesh cylindrical body are free.

  The rotation shaft may rotate in conjunction with the mesh cylinder described above or may rotate in exactly the same manner. That is, the same drive source is used. In this way, the apparatus becomes simple and inexpensive.

  The apparatus of the present invention may be provided with anything other than the essential elements as long as it does not depart from the spirit of the present invention. For example, a tachometer, a self-propelled device, or the like.

The soil sorting apparatus of the present invention has the following effects.
(1) The device itself is very simple and inexpensive.
(2) Any soil can be used regardless of the soil quality.
(3) The contained items can be easily selected according to their size.
(4) By changing the size of the mesh, various types can be selected.

  Hereinafter, based on an Example, this invention is demonstrated in detail.

Example 1
FIG. 1 is a schematic sectional view showing an example of the soil sorting apparatus 1 of the present invention. A hopper 3 is provided at the upstream end of the inclined mesh cylinder 2 (about 10 degrees). The mesh cylindrical body 2 is composed of a 20 mmφ mesh on the entire circumference. That is, the contaminants having a diameter of 20 mm or less fall into the receiving portion 4 from below. The tip 5 of the mesh cylinder 2 in this example is open. The input soil is agitated and loosened and falls from the mesh. What does not fall is aggregates of 20 mm or more, plant roots, other garbage, and the like. These are discharged and dropped to the receiver 6 from the above-described open end portion.

The mesh cylindrical body 2 is rotationally driven by a driving device (motor) 7.
The speed can be adjusted according to the amount and size of the input.
A rotating shaft 9 for the stirring tool 8 is provided at the center of the mesh cylindrical body 2. The rotary shaft 9 is similarly rotationally driven by the drive device 10. In this figure, the stirrer 8 appears to be different, but in practice they are all the same length. It just looks like that because the orientation has changed sequentially.

  FIG. 2 is an example in which a flip-up plate 11 is provided on the mesh cylindrical body 2. In this figure, when the mesh cylindrical body 2 is viewed from the longitudinal direction, only one stirring tool 8 is drawn. In this example, four flip-up plates 11 are provided at intervals of 90 degrees. The length of this plate in the longitudinal direction is substantially the same as that of the mesh cylindrical body 2. The number of sheets is not particularly limited. Of course, many shorter ones may be provided, and the positions may be random, spiral, or any other position. In this example, a brush 12 for cleaning the mesh is also provided.

  FIG. 3 is a cross-sectional view of the example of FIG. It can be seen that the flip-up plate 11 is a plate that is long in the longitudinal direction. Only a part of the stirring tool 8 is shown. Of course, the width of the flip-up plate may be increased and only the stirrer part may be cut out.

  4A and 4B show an example of a stirring tool, FIG. 4A is a side view, and FIG. 4B is a front view. In this example, the shape is curved like a Japanese sword, and the material is a normal steel material. In the example of FIG. 5, the lower part is large and can be fixed with two bolts. The direction of rotation is the direction of the arrow.

  FIG. 6 shows a method for fixing the stirring tool 8. (A) is a side view, (b) is a front view. A fixed plate 13 fixed to the rotary shaft 9 is fixed with bolts 14.

It is a schematic sectional drawing which shows one example of the soil sorting apparatus of this invention. It is sectional drawing which looked at the mesh cylindrical body 2 from the longitudinal direction. It is sectional drawing of the side surface of the mesh cylindrical body 2. FIG. An example of a stirring tool is shown, (a) is a side view, (b) is a front view. It is a side view which shows the other example of a stirring tool. The fixed state of a stirring tool is shown, (a) is a side view, (b) is a front view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Soil sorter 2 Mesh cylindrical body 3 Hopper 4 Receiving part 5 Tip part 6 Receiving machine 7 Drive apparatus (motor)
8 Stirrer 9 Rotating shaft 10 Drive device 11 Bounce plate 12 Brush 13 Fixing plate 14 Bolt

Claims (3)

The mesh cylindrical body is rotationally driven, and the mesh cylindrical body is provided with a rotational shaft that is rotationally driven, and the rotational shaft is agitated. A soil sorter characterized in that many tools are attached. The soil sorting apparatus according to claim 1, wherein a rear end portion of the mesh tubular body is open. The soil sorting apparatus according to claim 1 or 2, wherein the receiving portion is a belt conveyor installed below the mesh cylindrical body.

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