JP2013228342A - Diffusion device and photographing system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a diffusion device capable of stably and thinly diffusing material, and a photographing system using the diffusion device.SOLUTION: A diffusion device 2 equipped with a belt conveyer 21 having an endless belt 21c, and an endless net member 22; and a photographing system 1 equipped with the diffusion device 2 are provided. The net member 22 synchronously moves with the belt 21c while superimposed on an upper surface of the belt 21c, and is arranged so as to expand its width from an upstream side to a downstream side in a carrying direction on the upper surface of the belt 21c.

Description

  The present invention relates to a diffusion device for thinning a material and an imaging system using the diffusion device.

When producing a concrete material formed by mixing earth and sand material and cement, the particle size distribution of the earth and sand material is important for quality control.
In addition, it is desirable that the particle size distribution of the material can be appropriately determined not only for the earth and sand material, but also when a mixture (material) of fine and coarse particles is used (for example, a food factory).

  Conventionally, the management of the particle size distribution of materials has been carried out by regularly conducting screening tests by human power, but since this test is conducted in a random manner, the particle size distribution of the entire material should be confirmed. I couldn't. Also, it took time and effort to do it manually.

For this reason, a particle size distribution measurement system has been proposed in which a material in the middle of conveyance is photographed and the particle size distribution is automatically measured based on the photographing result (see, for example, Patent Document 1).
In addition, if the material being transported is layered, the coarse particle may be buried in the fine particle and the image may not be captured, and accurate particle size distribution may not be measured. Needs to be thinned.

Therefore, in Patent Document 1, the material is diffused by allowing the material to pass through a rectifying plate having a plurality of protrusions formed on the surface, thereby achieving thinning.
Patent Document 2 discloses a belt conveyor for diffusing a conveyed product by diffusing the flat knitted fabric seamless belt (a stretchable woven fabric seamless belt) while moving it while spreading. .

JP 2012-037296 A JP 2006-131360 A

  The current plate of Patent Document 1 is not suitable for highly viscous materials. That is, a highly viscous material adheres to the protrusions and the space between the protrusions is blocked, and the material cannot pass through the current plate.

  Further, the belt conveyor of Patent Document 2 is not suitable for a material containing fine particles. That is, there is a possibility that the flat knitted fabric seamless belt may not function due to clogging of fine particles between the fibers. The flat knitted fabric seamless belt is also unsuitable when the conveyed product is earth and sand material including gravel and the like. In other words, the flat knitted fabric seamless belt has a problem that it does not have sufficient strength with respect to the input and transport of gravel.

  The present invention solves the above-described problems, and an object of the present invention is to propose a diffusion device capable of stably diffusing a material and a photographing system using the diffusion device.

  In order to solve the above-described problems, a diffusion device according to the present invention is a diffusion device including a belt conveyor having an endless belt and an endless net member, and the net member overlaps the upper surface of the belt. In this state, the belt moves in synchronism with the belt, and the upper surface of the belt is arranged so that its width increases from the upstream side to the downstream side in the transport direction.

According to such a diffusing device, the material is diffused in the width direction of the belt conveyor by gradually widening the net member on the belt conveyor, so that the material can be thinned.
Further, even when the material has a high viscosity or the material contains fine particles, the mesh member is difficult to clog the material, so that the function of the diffusion device is unlikely to deteriorate.
Furthermore, since the impact at the time of material conveyance or material supply is handled by the belt conveyor, the load on the net member is small, and there is no problem in strength.

  The diffusion device includes a pair of left and right upstream network pulleys provided on the upstream side in the transport direction, a pair of left and right downstream network pulleys provided on the downstream side in the transport direction, and the left upstream network pulley. A left drive wire routed around a pulley and a left downstream mesh pulley; a right upstream mesh pulley on a right side; and a right drive wire stretched around a right downstream mesh pulley; Both ends of the member in the width direction are connected to the left drive wire and the right drive wire, respectively, and the separation distance between the downstream network pulleys is larger than the separation distance between the upstream network pulleys. It may be.

  According to such a diffusing device, the left driving wire and the right driving wire are arranged in a C shape by the upstream network pulley and the downstream network pulley. The mesh member is rotated by the left drive wire and the right drive wire and is widened on the upper surface of the belt conveyor.

  If the diffusing device further includes a net cleaning member for removing the adhering matter adhering to the net member, it is possible to prevent a part of the material (adhering matter) from adhering to the net member. It is possible to prevent the function of the diffusion device from deteriorating.

  An imaging system of the present invention is an imaging system including a diffusion unit that thins and drops a material, a supply unit that supplies the material to the diffusion unit, and an imaging unit that images the material dropped from the diffusion unit. The diffusion unit includes a belt conveyor having an endless belt, and an endless net member that moves in synchronization with the belt in a state of being superimposed on the upper surface of the belt, In the upper surface of the belt, the belt is arranged so that the width is widened from the upstream side to the downstream side in the transport direction.

  According to such an imaging system, it is possible to image a material that falls in a diffusion-thinned state, and thus it is possible to obtain an image with little overlap between materials.

  According to the diffusing device and the imaging system of the present invention, it is possible to stably and thinly diffuse the material.

It is a mimetic diagram showing an outline of an imaging system concerning an embodiment of the present invention. It is a top view which shows typically the diffusion apparatus of the imaging | photography system of FIG. (A)-(c) is a figure which shows the operating state of a diffusion apparatus.

  The imaging system 1 of the present embodiment measures the particle size distribution of the earth and sand material (material) M, and as shown in FIG. 1, a diffusion unit (diffusion device) 2, a supply unit 3, and an imaging unit 4. And.

The diffusion unit 2 is a part that transports the earth and sand material M supplied from the supply unit 3 to above the photographing unit 4 and thins the earth and sand material M.
The diffusing unit 2 includes a belt conveyor 21, a net member 22, an upstream net pulley 23, a downstream net pulley 24, and a drive wire 25.

  The belt conveyor 21 is for conveying the earth and sand material M. The belt conveyor 21 is arranged on the upstream side (the left side in the drawing) and the downstream side (the right side in the drawing). Pulley 21b) and an endless belt 21c wound around the bell-con pulleys 21a and 21b.

  The belt conveyor 21 includes a motor (not shown), and the belt 21c is rotated by rotating the upstream side bell-cone pulley 21a or the downstream side bell-cone pulley 21b by the motor. The material of the belt 21c is not limited, but a non-porous belt or a woven belt finer than the minimum particle size of the earth and sand material M is used so that the earth and sand material M does not pass through.

The net member 22 is formed in an endless shape, and is wound around an upstream net pulley 23 and a downstream net pulley 24 in a state of being overlapped on the upper surface of the belt conveyor 21. The net member 22 moves at the same speed as the belt 21c.
As shown in FIG. 2, drive wires 25 are connected to both ends of the mesh member 22 in the width direction (left and right), respectively.

The material of the net member 22 may be constituted by, for example, a string formed by bundling natural fibers or chemical fibers, or may be constituted by a metal material such as a wire, and is not limited. Absent. Further, it may be formed of a rubber plate or a resin plate having a large number of mesh-like holes.
Moreover, what is necessary is just to set the fineness of the mesh member 22 suitably according to the earth-and-sand material M to convey.

  The drive wire 25 is composed of an endless wire, and a wire is used in this embodiment. In addition, the material which comprises the drive wire 25 is not limited to a wire, For example, a rubber belt may be sufficient.

  In this embodiment, as shown in FIGS. 1 and 2, a pair of left and right upstream network pulleys 23, 23 are provided on the upstream side in the transport direction. Further, as shown in FIG. 1, a pair of left and right downstream network pulleys 24, 24 (only one downstream network pulley 24 is shown in the drawing) is provided on the downstream side in the transport direction. .

  The left drive wire 25 to which the left end of the mesh member 22 is connected is wound around a left upstream mesh pulley 23 and a left downstream mesh pulley 24. The right drive wire 25 connected to the right end of the mesh member 22 is wound around a right upstream mesh pulley 23 and a right downstream mesh pulley 24.

One of the upstream network pulleys 23 and 23 or the downstream network pulleys 24 and 24 is configured to rotate by the power of a motor (not shown). In addition, you may receive the pulley for a drive separately.
The rotational speed of the motor is set so that the mesh member 22 (drive wire 25, 25) can move in synchronization with the belt 21c of the belt conveyor 21.

  The rotational force may be applied to the mesh member 22 by a motor that applies the rotational force to the belt 21c, or the rotational force may be applied to the mesh member 22 by a motor different from the motor for the belt 21c.

  The separation distance between the downstream network pulleys 24, 24 is larger than the separation distance between the upstream network pulleys 23, 23, and the left and right drive wires 25, 25 are eight in plan view as shown in FIG. It is arranged in a letter shape. Since both ends of the mesh member 22 are connected to the drive wires 25, 25, the portion of the mesh member 22 that overlaps the upper surface of the belt conveyor 21 increases in width from the upstream side to the downstream side in the transport direction, and is flat. Presents a trapezoidal shape.

  In the present embodiment, as shown in FIG. 1, the upstream network pulleys 23, 23 are disposed upstream of the upstream bell-con pulley 21 a (upstream from the upstream end of the belt conveyor 21), The downstream network pulleys 24, 24 are disposed below the downstream bell-con pulley 21b (below the downstream end of the belt conveyor 21).

The downstream mesh pulley 24 is arranged on the upstream side of the downstream velcon pulley 21b so that the mesh member 22 is inclined toward the upstream side as it goes down. That is, the mesh member 22 located between the downstream end of the belt conveyor 21 and the downstream mesh pulley 24 moves from the trajectory of the earth and sand material M toward the downstream mesh pulley 24 from the downstream end of the belt conveyor 21. It is supposed to leave.
As a result, the mesh member 22 is wound around the upstream mesh pulleys 23, 23, the upper surface of the belt 21c and the downstream mesh pulleys 24, 24 as shown in FIG. It can be dropped from the downstream end of the belt conveyor 21.

  In the present embodiment, a net cleaning member 26 for removing deposits adhering to the net member 22 is disposed between the downstream bell-con pulley 21b and the downstream net pulley 24. The net cleaning member 26 is a so-called brush, and cleans the net member 22 so that the net member 22 is not clogged.

The supply unit 3 is means for supplying a material to the diffusion unit 2.
The supply part 3 of this embodiment consists of a hopper provided above the upstream end part of the spreading | diffusion part 2, as shown in FIG. The supply unit 3 stores the material, discharges the stored material from the lower end, and puts it on the diffusion unit 2 (belt conveyor 21). Supply of the earth and sand material M by the supply part 3 is performed according to control by the control part which is not shown in figure.

  The configuration of the supply unit 3 is not limited. The supply unit 3 may be controlled manually by an operator.

The photographing unit 4 is a means for photographing the earth and sand material M that has fallen from the downstream end of the diffusing unit 2.
As shown in FIG. 1, the photographing unit 4 of the present embodiment includes a camera 41 and a photographing back plate 42. The camera 41 and the imaging back plate 42 are disposed so as to sandwich the earth and sand material M dropped from the downstream end of the supply unit 3. In the present embodiment, a photographing back plate 42 is disposed below the supply unit 3 and upstream of the downstream end of the belt conveyor 21 (the fallen sediment material M), and the downstream end of the belt conveyor 21 (the fall) The camera 41 is arranged downstream of the earth and sand material M). In addition, the structure of the imaging | photography part 4 is not limited.

The camera 41 photographs the earth and sand material M. As the camera 41, a video camera or a digital camera may be used.
The photographing back plate 42 is a background at the time of photographing with the camera 41 and has a color different from that of the earth and sand material M.

  In the present embodiment, the photographing result by the camera 41 is output to a calculation unit (not shown). The calculation unit is means for calculating the particle size distribution of the earth and sand material M based on the imaging result of the imaging unit 4. The configuration of the calculation unit is not limited and may be appropriately configured. Moreover, what is necessary is just to comprise a calculation part as needed.

  When the diffusion unit (diffusion device) 2 is operated, the belt 21c and the net member 22 move in synchronization. When the earth and sand material M is supplied to the diffusion part 2 from the supply part 3, the earth and sand material M is piled up on the upper surface of the belt 21c and the net member 22 as shown in FIG.

The earth and sand material M dropped on the diffusing unit 2 is conveyed to the downstream side by the belt 21c and the net member 22 that move in synchronization.
Since the width of the mesh member 22 increases toward the downstream side, as shown in FIGS. 3A to 3C, the earth and sand material M mounted on the mesh member 22 also extends in the width direction of the belt 21c as it goes downstream. Spread (spread). The earth and sand material M is thinned by spreading in the width direction. In addition, although the case where earth and sand material is thrown in once is illustrated in FIG. 3, even if earth and sand material is thrown in continuously, it will be thinned toward the downstream.

The earth and sand material M falls from the downstream end of the belt conveyor 21 in a thinned state. The photographing unit 4 can obtain an image with little overlap of earth and sand by photographing the earth and sand material M that is falling.
The calculation unit calculates the particle size distribution of the earth and sand material M using the image captured by the imaging unit 4.

Deposits are removed from the net member 22 that has transported the earth and sand material M by the net cleaning member 26 disposed below the belt conveyor 21.
Further, when the mesh member 22 returns to the upstream side through the lower side of the belt conveyor 21, the width dimension becomes smaller toward the upstream side.

  As described above, according to the imaging system 1 of the present embodiment, the sediment material M can be automatically and continuously thinned by the diffusion unit (diffusion device) 2. Therefore, it is possible to easily measure the particle size distribution.

  Moreover, it is possible to adjust the thinning time of the earth and sand material M by changing the driving speed of the belt conveyor 21.

  Further, since the earth and sand material M is expanded in accordance with the widening of the net member 22 that moves synchronously with the belt 21c, even if the extension distance of the belt conveyor 21 (the moving distance of the earth and sand material M) is short, the thin layer of the earth and sand material M is stably provided. Can be realized. Therefore, the size of the belt conveyor 21 (diffusion device) can be reduced.

  Since a general device can be used as the belt conveyor 21, the diffusion device can be configured at low cost.

Since the impact when the earth and sand material M is charged is handled by the belt conveyor 21 (belt 21c), the net member 22 is not damaged.
Further, since the transport of the earth and sand material M is also handled by the belt conveyor 21 (belt 21c), the load on the mesh member 22 is small, and the mesh member 22 is not damaged.

Even the earth and sand material M including sand, fine particles of viscous soil, gravel, etc. can be stably clogged without causing clogging. Therefore, the particle size distribution can be measured with high accuracy.
Since there is little possibility of the earth and sand material M adhering, there is no possibility that the function of the photographing system 1 (the diffusion device 2) will deteriorate.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiment, and the above-described components can be appropriately changed without departing from the spirit of the present invention.

  In the above-described embodiment, the case where the sedimentary material is thinned using the diffusion device (diffusion unit) has been described. However, the diffusion device is not limited to the sediment material, and any thin or coarse material is thin. Can be used for stratification. Therefore, it can be used not only in concrete plants and crushed stone factories, but also in food factories, for example.

In the said embodiment, although the particle size distribution of earth and sand material was measured using the image image | photographed with the imaging | photography system 1, the use purpose of an image is not limited.
Moreover, in the said embodiment, although the spreading | diffusion apparatus 2 was arrange | positioned in the imaging | photography system 1 and shall be image | photographed by making the earth and sand material into a thin layer, the intended purpose of the diffusion apparatus 2 is not limited to this.

1 Imaging System 2 Diffusion Unit (Diffusion Device)
21 belt conveyor 21c belt 22 mesh member 23 upstream mesh pulley 24 downstream mesh pulley 25 drive wire 26 mesh cleaning member 3 supply unit 4 photographing unit M earth and sand material

Claims (4)

A diffusion device comprising a belt conveyor having an endless belt, and an endless net member,
The mesh member is disposed so as to move in synchronization with the belt while being superimposed on the upper surface of the belt, and to increase in width from the upstream side to the downstream side in the transport direction on the upper surface of the belt. A diffusion device, characterized in that A pair of left and right upstream network pulleys provided on the upstream side in the conveying direction;
A pair of left and right downstream network pulleys provided on the downstream side in the conveying direction;
A left drive wire routed around the left upstream pulley and the left downstream pulley;
A right drive wire routed around the right upstream network pulley and the right downstream network pulley; and
The mesh member has both ends in the width direction connected to the left drive wire and the right drive wire,
2. The diffusion device according to claim 1, wherein a separation distance between the downstream network pulleys is larger than a separation distance between the upstream network pulleys.   The diffusion device according to claim 1, further comprising a net cleaning member for removing deposits attached to the net member. A diffusion part that thins the material and drops it;
A supply unit for supplying material to the diffusion unit;
A photographing unit that photographs the material dropped from the diffusion unit,
The diffusion unit includes a belt conveyor having an endless belt, and an endless net member that moves in synchronization with the belt while being superimposed on the upper surface of the belt,
The imaging system according to claim 1, wherein the mesh member is disposed on the upper surface of the belt so as to increase in width from the upstream side to the downstream side in the transport direction.

Images