JP7499199B2 - Equipment for separating geomaterials - Google Patents

Description

The present invention relates to an apparatus for separating geological materials.

In construction of dams, etc., ground materials containing a mixture of granular materials of various particle sizes procured from near the construction site are sometimes used to manufacture concrete, either as is or after being crushed appropriately. Batcher plants and CSG (Cemented Sand and Gravel) mixing plants are used in the process of manufacturing concrete in the construction of dams, etc.
In these plants, it is necessary to know the particle size distribution of the ground material for quality control of concrete. Therefore, it has been proposed to photograph the transported ground material and measure the particle size distribution of the ground material based on the photographed results (for example, see Patent Document 1).

JP 2016-200518 A

When measuring the particle size distribution of ground material, images of the transported ground material are photographed and analyzed.
However, it is difficult to analyze the entire amount of ground material transported for use in construction work because the number of analysis targets is too large. Therefore, it is preferable to efficiently separate a portion of the transported ground material in the amount required for analysis.
The present invention has an object to solve the above-mentioned problems and to provide a ground material fractionation device that can efficiently fractionate a portion of the transported ground material for analysis.

In order to solve the above problems, the present invention provides a device for separating ground material transported on a belt conveyor. This device for separating ground material comprises a cylindrical main body having an opening for taking in the ground material dropped from the belt conveyor, and a wedge-shaped first separation section arranged so as to protrude upward inside the main body . The ground material taken in at the opening and passing through the main body falls onto the first separation section and is divided into two parts, one on the conveyor for separation and the other on the conveyor for the main flow.
In the present invention, the ground material dropped from the belt conveyor is taken into the opening of the main body, passes through the main body, and falls onto the first fractional section, which is a wedge-shaped section that protrudes upward. The ground material that falls onto the first fractional section is divided into two parts, one on the conveying device for fractional collection and the other on the conveying device for the main flow. The ground material transported by the conveying device for fractional collection is used for analysis, and the ground material transported by the conveying device for the main flow is used for construction work.
This makes it possible to separate the amount of ground material required for analysis from the ground material being transported on the belt conveyor. Therefore, according to the present invention, it is possible to provide a ground material separation device that can efficiently separate a portion of the transported ground material for analysis.

In the above-mentioned ground material fractionating device, it is preferable that the first fractionating section is movable along a direction in which the ground material is divided into two.
In this configuration, the ratio of the amount of ground material guided onto the transport device for fractionation and the amount of ground material guided onto the transport device for the main flow can be adjusted, making it possible to efficiently separate an amount of ground material suitable for analysis.

In the above-mentioned ground material separation device, it is preferable that a partition plate is provided inside the main body. In this case, the opening is divided into a rear opening located on the rear side as viewed from the upstream side of the belt conveyor and a front opening located on the front side, with the partition plate as a boundary. The rear opening has an opening area smaller than that of the front opening, and constitutes a second separation section that takes in a part of the ground material.
In this configuration, a portion of the ground material is taken through the second collection section configured as the rear opening, thereby making it possible to limit the amount of ground material taken for analysis.

In the above-mentioned ground material separation device, it is preferable that a left blocking member and a right blocking member for blocking a part of the passage in the main body are provided on the left and right sides of the rear opening as viewed from the upstream side of the belt conveyor, respectively. In this case, the second separation section is formed between the left blocking member and the right blocking member.
In this configuration, the left and right blocking members that block part of the passage in the main body are provided to easily form the second collection section with an appropriate opening area. Also, part of the ground material is efficiently taken in by passing between the left and right blocking members.

In the above-mentioned ground material fractionating apparatus, it is preferable that the front opening is provided with a plate-shaped member that closes a portion of the front opening.
Among the ground materials dropped from the belt conveyor, coarse granular materials with large particle size and heavy weight tend to fall farther from the upstream side of the belt conveyor, while fine granular materials with small particle size and light weight tend to fall toward the front side. By blocking a part of the front opening with a plate-shaped member, the fine granular materials that tend to fall toward the front side can be bounced on the plate-shaped member and guided to the second collection section configured as the rear opening. Therefore, the ground material taken into the second collection section configured as the rear opening is a moderate mixture of coarse granular materials and fine granular materials. Therefore, the difference between the particle size distribution of the ground material that is separated and used for analysis and the particle size distribution of the ground material used for construction can be reduced. This improves the reliability of the analysis using the separated ground material.

According to the present invention, a geological material sampling device can be provided that can efficiently sample a portion of the transported geological material for analysis.

1 is a side view showing an outline of a ground material separation device according to an embodiment of the present invention. FIG. 2 is a perspective view showing a schematic diagram of a primary diversion chute of the geomaterial separation device shown in FIG. 1 . FIG. 3 is a schematic plan view of the primary diversion chute shown in FIG. 2 . FIG. 3 is a schematic view of the primary diversion chute shown in FIG. 2 as seen from the rear side. 1 is a flowchart showing the details of a method for separating ground material according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings shown below, the same or similar components are given the same reference numerals, and duplicated descriptions are omitted. In addition, the size and shape of the components may be deformed or exaggerated to be schematic for the convenience of explanation.
1 is a side view showing an outline of a ground material fractionation device (hereinafter, simply referred to as "fractionation device") 100 according to an embodiment of the present invention. The fractionation device 100 according to this embodiment is a device that fractionates ground material 102 to be used for particle size distribution analysis from ground material 102, which is a mixture of granular materials of various particle sizes procured mainly from near a dam construction site.
As shown in Figure 1, the fractionation device 100 is a fractionation device for ground material 102 transported in direction A on a belt conveyor 101. This fractionation device 100 comprises a main body 1 and a first fractionation section 2. The main body 1 is cylindrical and has an opening 3 for taking in the ground material 102 dropped from the belt conveyor 101. The main body 1 comprises a primary diversion chute 10, a secondary diversion chute 30, a connecting chute 40, and a main chute 50.

The opening 3 is formed in the primary diversion chute 10. The secondary diversion chute 30 is disposed below the primary diversion chute 10 on the rear side (hereinafter simply referred to as the "rear side") when viewed from the upstream side of the belt conveyor 101. A connecting chute 40 is connected to the rear side below the secondary diversion chute 30. The main stream chute 50 is disposed below the primary diversion chute 10 on the near side (hereinafter simply referred to as the "front side") when viewed from the upstream side of the belt conveyor 101.

The first sorting section 2 is wedge-shaped and is arranged inside the secondary diversion chute 30 of the main body 1 so as to protrude upward. Specifically, the first sorting section 2 has a triangular roof shape with a ridgeline 2a extending horizontally. The ridgeline 2a of the first sorting section 2 is perpendicular to the direction in which the ground material 102 is transported on the belt conveyor 101 when viewed from above. The first sorting section 2 has a diversion-side inclined surface 2b that slopes downward from the ridgeline 2a toward the back side, and a main-side inclined surface 2c that slopes downward from the ridgeline 2a toward the front side.
When the ground material 102 falls onto the first fractionation section 2, the ground material 102 that falls on the back side of the ridge 2a slides down on the diversion side inclined surface 2b and is guided to the fractionation conveying device 103 through the connection chute 40. On the other hand, the ground material 102 that falls on the front side of the ridge 2a slides down on the main stream side inclined surface 2c and enters the main stream chute 50 through an opening (not shown) formed in a partition plate located at the boundary between the secondary diversion chute 30 and the main stream chute 50. The ground material 102 that passes through the main stream chute 50 is guided onto the main stream conveying device 104. In other words, the ground material 102 that is taken into the back side opening 4 of the opening 3 and passes through the main body 1 falls onto the first fractionation section 2 and is divided into two parts, the part on the parting conveying device 103 and the part on the main stream conveying device 104.

The first fractionation section 2 is movable along the direction in which the ground material 102 is divided, i.e., along a horizontal direction (direction B in FIG. 1) parallel to the direction in which the ground material 102 is transported on the belt conveyor 101 when viewed from above. The first fractionation section 2 is moved by a driving means such as a motor or a cylinder device, but may also be moved manually. A belt conveyor is used here as the fractionation transport device 103 and the main stream transport device 104, but this is not limited thereto, and other transport devices such as a transport vehicle may also be used. The belt conveyor used as the main stream transport device 104 here extends in a direction perpendicular to the plane of the paper in FIG. 1.

The fractionation device 100 also includes a vibrator 6 that applies various types of vibrations, such as impact vibrations, to the main body 1. Here, the vibrator 6 is installed in the secondary diversion chute 30, but the location where it is installed is not particularly limited, and it may be installed in another location on the main body 1, such as the primary diversion chute 10.

Fig. 2 is a perspective view showing the primary flow diversion chute 10 of the fraction collection device 100 shown in Fig. 1. Fig. 3 is a plan view showing the primary flow diversion chute 10 shown in Fig. 2. Fig. 4 is a view showing the primary flow diversion chute 10 shown in Fig. 2 as viewed from the rear side.
As shown in Figures 1 and 2, a partition plate 11 is provided inside the primary diversion chute 10 of the main body 1. The partition plate 11 is provided along a vertical plane perpendicular to the direction in which the ground material 102 is transported on the belt conveyor 101 when viewed from above. The opening 3 is divided into a rear opening 4 located on the rear side and a front opening 5 located on the front side by the partition plate 11.

As shown in Figures 2 to 4, the primary diversion chute 10 has a generally rectangular cylindrical shape and includes a rear side surface 12 located at the rear side and a front side surface 13 located at the front side. The primary diversion chute 10 also includes a left side surface 14 and a right side surface 15 located on the left and right sides (hereinafter simply referred to as "left side" and "right side"), respectively, when viewed from the upstream side of the belt conveyor 101 (see Figure 1, and the same below). The left and right ends of the partition plate 11 are fixed to the left side surface 14 and the right side surface 15, respectively.

The rear opening 4 has a smaller opening area than the front opening 5, and constitutes a second collection section that takes in a portion of the ground material 102. A left blocking member 16 and a right blocking member 17 that block a portion of the passage in the main body 1 are provided on the left and right sides of the rear opening 4, respectively. In this embodiment, the left blocking member 16 and the right blocking member 17 are horizontally arranged plate materials. The second collection section that constitutes the rear opening 4 is formed between the left blocking member 16 and the right blocking member 17. The first collection section 2 (see Figure 1) is located below the second collection section that constitutes the rear opening 4 in the rear space of the two spaces separated by the partition plate 11.

A plate-like member 18 is provided at the front opening 5 to close a portion of the front opening 5. The plate-like member 18 is provided at the front side of the rear opening 4 so that it is mounted at the front opening 5 along the direction in which the ground material 102 (see FIG. 1, and the same below) is transported on the belt conveyor 101 when viewed from above. The plate-like member 18 is inclined downward toward the partition plate 11. A rectangular plate is used here as the plate-like member 18, but the shape and size are not particularly limited.

On the rear opening 4 side of the left blocking member 16 and the right blocking member 17, i.e., on both ends near the center, side plates 19, 19 are erected so as to face each other. In other words, the second collection section configured as the rear opening 4 is specifically formed between the two opposing side plates 19, 19. The side plate 19 is in the shape of a roughly right-angled triangle, and the inclined end surface 19a, which corresponds to the hypotenuse, is inclined downward from the rear side toward the partition plate 11.

The space surrounded by the side plate 19, the left side surface 14 (right side surface 15), the rear side surface 12, and the left blocking member 16 (right blocking member 17) forms the dead stock section 20. The ground material 102 piled up in the dead stock section 20 cushions the impact of the ground material 102 being dropped thereafter. The ground material 102 dropped onto the ground material 102 piled up in the dead stock section 20 mainly flows toward the front opening 5. The ground material 102 taken in from the front opening 5 passes through the main stream chute 50 and falls onto the main stream conveying device 104. It is desirable to attach a reinforcing member (not shown) to the inclined end surface 19a of the side plate 19 to protect it from the impact of the ground material 102 falling.
The inclined end surface 19a of the side plate 19 is arranged parallel to the direction in which the ground material 102 is transported on the belt conveyor 101 when viewed from above. On the other hand, the approximately right-angled corner 19b of the side plate 19 is located outside the inclined end surface 19a when viewed from above, that is, on the side away from the opposing side plate 19. In other words, the distance between the two opposing side plates 19, 19 is slightly wider at the bottom rear side. Accordingly, the left blocking member 16 and the right blocking member 17 here are trapezoidal, and the distance between them is wider at the rear side than at the front side.

Next, a method for extracting ground material 102 using the thus configured extraction device 100 will be described.
Fig. 5 is a flow chart showing the contents of the method for separating ground material according to the embodiment of the present invention. As shown in Fig. 5, the method for separating ground material according to the embodiment of the present invention includes an intake step S1, a partial intake (first separation) step S2, a dropping step S3, a bisection (second separation) step S4, and a transport step S5.
In the intake step S1, ground material 102 dropped from a belt conveyor 101 is taken into an opening 3 provided in a cylindrical main body 1.
In the partial collection (primary collection) step S2, a portion of the dropped ground material 102 is collected through the second collection section configured as the rear opening 4.
In the falling step S3, the ground material 102 that is taken into the rear opening 4 of the opening 3 and passes through the main body 1 falls onto the wedge-shaped first fractionation section 2 that is arranged so as to protrude upward inside the main body 1.
In the bifurcating (secondary collection) step S4, the ground material 102 that has fallen onto the first collection section 2 is divided into two parts, onto a transport device 103 for collection and onto a transport device 104 for the main flow.
In the transport step S5, the ground material 102 guided onto the transport device 103 for fractionation is transported to an analysis device (not shown) as a fraction for analysis. On the other hand, the ground material 102 guided onto the transport device 104 for the main flow is transported to a predetermined location such as a stockyard (not shown) for use in construction work.

As described above, the fractionation device 100 according to this embodiment is a fractionation device for ground material 102 transported on a belt conveyor 101. This fractionation device 100 comprises a cylindrical main body 1 having an opening 3 for taking in ground material 102 dropped from the belt conveyor 101, and a wedge-shaped first fractionation section 2 arranged so as to protrude upward inside the main body 1. The ground material 102 taken in at the opening 3 and passing through the main body 1 falls onto the first fractionation section 2 and is divided into two parts, one on a conveying device 103 for fractionation and the other on a conveying device 104 for the main flow.
In this embodiment, ground material 102 dropped from a belt conveyor 101 is taken into the opening 3 of the main body 1, passes through the main body 1, and falls onto a wedge-shaped first fractionation section 2 arranged so as to protrude upward. The ground material 102 that falls onto the first fractionation section 2 is divided into two parts, one on a conveying device 103 for fractionation and the other on a conveying device 104 for the main flow. The ground material 102 transported by the conveying device 103 for fractionation is used for analysis, and the ground material 102 transported by the conveying device 104 for the main flow is used for construction work.
This makes it possible to extract the amount required for analysis from the ground material 102 transported on the belt conveyor 101. Therefore, according to this embodiment, it is possible to provide a ground material extraction device 100 that can efficiently extract a portion of the transported ground material 102 for analysis.

In addition, in this embodiment, the first fractionation section 2 can move along the direction in which the ground material 102 is divided in two. In this configuration, the ratio between the amount of ground material 102 guided onto the fractionation conveying device 103 and the amount of ground material 102 guided onto the main flow conveying device 104 can be adjusted. This makes it possible to efficiently separate an amount of ground material 102 that is more suitable for analysis.

In addition, in this embodiment, a partition plate 11 is provided inside the main body 1. In this case, the opening 3 is divided into a rear opening 4 located on the rear side when viewed from the upstream side of the belt conveyor 101, and a front opening 5 located on the front side, with the partition plate 11 as a boundary. The rear opening 4 has a smaller opening area than the front opening 5, and constitutes a second separation section that takes in a portion of the ground material 102. In this configuration, a portion of the ground material 102 is taken in through the second separation section configured as the rear opening 4. This makes it possible to narrow down the amount of ground material 102 that is separated for analysis.

In addition, in this embodiment, a left blocking member 16 and a right blocking member 17 that block part of the passage in the main body 1 are provided on the left and right sides of the rear opening 4, respectively. In this case, the second collection section configured as the rear opening 4 is formed between the left blocking member 16 and the right blocking member 17. By providing the left blocking member 16 and the right blocking member 17 that block part of the passage in the main body 1, a second collection section with an appropriate opening area can be easily formed. Also, a part of the ground material 102 is efficiently taken in by passing between the left blocking member 16 and the right blocking member 17.

In addition, in this embodiment, the front opening 5 is provided with a plate-like member 18 that blocks a part of the front opening 5. Of the ground material 102 dropped from the belt conveyor 101, the coarse grains with a large grain size and a large weight tend to fall along the C arrow in FIG. 1 and reach a distance farther than the partition plate 11, while the fine grains with a small grain size and a small weight tend to fall along the D arrow in FIG. 1 and reach the front side of the partition plate 11. By blocking a part of the front opening 5 with the plate-like member 18, the fine grains that tend to fall to the front side can be bound on the plate-like member 18 and guided to the second separation section configured as the rear opening 4. Therefore, the ground material 102 taken into the second separation section configured as the rear opening 4 is a moderate mixture of coarse grains and fine grains. Therefore, the difference between the grain size distribution of the ground material 102 that is separated and used for analysis and the grain size distribution of the ground material 102 used for construction can be reduced. This improves the reliability of analysis using the collected ground material 102.

In this embodiment, the plate-like member 18 is provided on the front side of the rear opening 4 along the direction in which the ground material 102 is transported on the belt conveyor 101 as viewed from above. In this configuration, of the ground material 102 dropped from the belt conveyor 101, fine granular material that tends to fall to the front side tends to bounce on the plate-like member 18 and be guided to the second collection section configured as the rear opening 4. This makes it possible to increase the amount of fine granular material taken into the second collection section.
In this embodiment, the plate-like member 18 is inclined downward toward the partition plate 11. In this configuration, of the ground material 102 dropped from the belt conveyor 101, the fine granular material that tends to fall toward the front side tends to bounce back toward the second collection section configured as the rear opening 4 after colliding with the plate-like member 18. This makes it possible to increase the amount of fine granular material taken into the second collection section.

In addition, in this embodiment, the first fractionation section 2 is disposed below the second fractionation section configured as the rear opening 4 in the space at the rear end as viewed from the upstream side of the belt conveyor 101, of the two spaces separated by the partition plate 11. In this configuration, the second fractionation section configured as the rear opening 4 first reduces the amount of ground material 102 to perform a primary fractionation, and then the first fractionation section 2 adjusts the amount required for analysis to perform a secondary fractionation. This reduces the burden on both the first fractionation section 2 and the second fractionation section configured as the rear opening 4, and by dividing the fractionation into two stages, a more appropriate amount can be fractionated.

In addition, in this embodiment, the ground material 102 taken in from the front opening 5 falls onto the main stream conveying device 104. In this configuration, the ground material 102 that is not taken in the second collection section configured as the rear opening 4 and is not used for analysis can be quickly transported by the main stream conveying device 104 for use in construction work.

This embodiment also includes a vibrating body 6 that applies vibrations to the main body 1. The portion where the ground material 102 is separated is structurally complex because it is necessary to separate a portion of the ground material 102. As a result, there are many contact points with the ground material 102 in the portion where the ground material 102 flows, and there is a possibility that blockages will occur due to the adhesion of the ground material 102. By including the vibrating body 6, vibrations can be applied to the portion where the ground material 102 comes into contact, making it difficult for the ground material 102 to adhere. This makes it possible to suppress blockages due to the adhesion of the ground material 102 in the portion where the ground material 102 flows, improving the maintainability of the separation device 100.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit of the present invention.
For example, in the above embodiment, the left blocking member 16 and the right blocking member 17 are arranged horizontally and the dead stock portion 20 is formed thereon, but this is not limited thereto. The left blocking member 16 and the right blocking member 17 may be provided inclined downward toward the partition plate 11. In this case, the side plate 19 and the dead stock portion 20 may be omitted.

1 Main body 2 First fraction collection section 3 Opening 4 Back opening (second fraction collection section)
5 Front opening 6 Vibration body 11 Partition plate 16 Left blocking member 17 Right blocking member 18 Plate-shaped member 100 Fraction collection device 101 Belt conveyor 102 Ground material 103 Conveyor device for fraction collection 104 Conveyor device for main flow

Claims (4)

A device for separating ground materials transported on a belt conveyor,
A cylindrical main body having an opening for taking in the ground material dropped from the belt conveyor;
A wedge-shaped first fractionating portion is disposed inside the main body portion so as to protrude upward,
The first fractionating section is movable along a direction in which the ground material is divided into two,
The ground material taken into the opening and passing through the main body falls onto the first fractionation section and is divided into two parts, one on a conveying device for fractionation and the other on a conveying device for the main flow.
A geomaterial separation device characterized by: A device for separating ground materials transported on a belt conveyor,
A cylindrical main body having an opening for taking in the ground material dropped from the belt conveyor;
A wedge-shaped first fractionating portion is disposed inside the main body portion so as to protrude upward,
A partition plate is provided inside the main body,
The opening is divided into two by the partition plate, a rear opening located on the rear side as viewed from the upstream side of the belt conveyor, and a front opening located on the front side,
The rear opening has an opening area smaller than that of the front opening and constitutes a second fractionating section that takes in a portion of the ground material,
The ground material taken into the opening and passing through the main body falls onto the first fractionation section and is divided into two parts, one on a conveying device for fractionation and the other on a conveying device for the main flow.
A geomaterial separation device characterized by: a left blocking member and a right blocking member that block a part of a passage in the main body are provided on the left and right sides of the rear opening as viewed from the upstream side of the belt conveyor,
the second sorting portion is formed between the left blocking member and the right blocking member;
The apparatus for separating geological materials according to claim 2 . a plate-like member is provided at the front opening to close a portion of the front opening;
4. The apparatus for separating geological materials according to claim 2 or 3 .

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