JP2004076474A - Floating matter incursion preventive method and its device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floating matter incursion preventive method and its device immediately and surely executing countermeasures against the overflow without costing much expenses. <P>SOLUTION: An impeller 12 set in a branch channel 3 branching from a river 1 is rotated by overflowing water resulting from the abnormal rise of the river 1, and torque of the impeller 12 is transferred to a rotary disc screen 5 mounting a large number of discs 7 to a shaft 6 set in the boundary between the river 1 and the branch channel 3 at regular intervals to rotate the disc screen 5 to prevent the incursion of the floating matter flowing down the river 1 into the branch channel 3. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method of preventing suspended matter intrusion for preventing suspended matter flowing through a main waterway from flowing into a branch waterway, and to an improvement of an apparatus therefor.
[0002]
[Prior art]
In rivers, etc., a number of disk screens with a number of disks attached to the shaft at intervals are arranged side by side, and by rotating these disk screens around the shaft in the same direction, floating matter together with overflow water Techniques have been developed to prevent the water from flowing into the discharge side from rivers and the like (see Japanese Patent No. 2987266, Japanese Patent Application Laid-Open Nos. 11-140851 and 10-168857).
[0003]
[Problems to be solved by the invention]
However, in each of the above publication examples, since the disk screen is rotated by driving the motor, a person notices that a river or the like has overflowed due to abnormally high water, and after receiving the notification, drives the motor in a hurry. Therefore, the response may be delayed. Further, if the motor is broken due to submersion or the like, there is no way to take measures. Further, even if it is detected that a river or the like has overflown and the motor is driven based on the signal, there is nothing to be done if the control system breaks down. Further, the cost increases due to the presence of the motor.
[0004]
The present invention has been made in view of such a point, and an object of the present invention is to make it possible to take an overflow countermeasure immediately and reliably without incurring much expense.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is characterized in that a disk screen is rotated using a flow of overflow water.
[0006]
More specifically, the present invention is directed to a suspended matter intrusion prevention method and apparatus therefor, and has taken the following solutions.
[0007]
That is, the invention according to claim 1 relates to the former method for preventing intrusion of suspended matter, wherein an impeller installed in a branch waterway branched from a main waterway is rotated by overflow water caused by abnormally increasing water in the main waterway. The rotating force of the impeller is transmitted to a rotary disk screen which is installed at a boundary between the main waterway and the branch waterway and has a number of disks mounted on a shaft at intervals to rotate the disk screen. This prevents the floating matter flowing through the main waterway from entering the branch waterway.
[0008]
The inventions according to claims 2 to 7 relate to the latter floating substance intrusion prevention device, and the invention according to claim 2 is installed at a boundary between a main waterway and a branch waterway branched from the main waterway. A rotating disk screen with a large number of disks attached to the shaft at intervals, and when the overflow water flows into the branch channel due to abnormal increase in the main channel, the disk screen is rotated to rotate the main screen. A floating substance intrusion prevention device for preventing floating substances flowing through a water channel from entering a branch water channel, wherein the branch water channel is provided with an impeller that is rotated by a flow of the overflow water, and the disc screen is It is characterized in that it is configured to be driven and connected to the impeller to rotate by transmitting its rotational force.
[0009]
With the above configuration, according to the first and second aspects of the present invention, when the main channel overflows, the impeller is automatically rotated by the flow of the overflow water, and this rotational force is transmitted to the disk screen. As soon as the disk screen overflows, it rotates immediately. In addition, since the cost is not required because the motor is not required, and there is no failure of the motor, the disk screen rotates reliably.
[0010]
According to a third aspect of the present invention, in the second aspect of the invention, the impeller is rotatably supported on a vertical portion of the branch channel so as to be rotatable around a vertical axis.
[0011]
With the above configuration, in the invention according to claim 3, the overflow water that falls due to its own weight hits the impeller, so that the impeller rotates efficiently.
[0012]
According to a fourth aspect of the present invention, in the second aspect of the invention, a plurality of disk screens are arranged in series with their shafts directed in the vertical direction, and the outer circumference of each disk of adjacent disk screens has a predetermined distance. And are close to each other.
[0013]
According to the above configuration, an embodiment of the arrangement of the disk screens is embodied in the invention described in claim 4.
[0014]
According to a fifth aspect of the present invention, in the fourth aspect of the present invention, a shielding column is provided between adjacent disk screens so as to cover a gap.
[0015]
With the above configuration, in the invention according to claim 5, the floating matter flowing through the main waterway is blocked by the shielding pillar even when approaching the disk screen, is not caught between the adjacent disk screens, and does not enter the branch waterway. .
[0016]
According to a sixth aspect of the present invention, in the invention of the fourth aspect, between the adjacent disks of the disk screen, a dust removing plate for removing dust that has entered between the disks is inserted. Features.
[0017]
According to the sixth aspect of the present invention, dust that has entered between adjacent disks of the disk screen is removed by the dust removal plate with the rotation of the disk screen, so that the disk screen is clogged. Without this, the water flowing through the main channel smoothly flows into the branch channel.
[0018]
The invention according to claim 7 is the invention according to claim 2, wherein a plurality of disk screens are arranged in series, and each disk of adjacent disk screens is rotatably meshed with each other. I do.
[0019]
According to the above configuration, another embodiment of the arrangement of the disc screens is embodied in the invention described in claim 7.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(Embodiment 1)
1 and 2 show an example in which a suspended matter intrusion prevention device S according to Embodiment 1 of the present invention is applied to a river 1 as a main waterway, and a guide space 2 for guiding overflow water is provided beside the river 1. A circular guideway 2a is formed in the guide space 2, and a branch waterway 3 that extends vertically downward and further extends horizontally toward the sea branches from the river 1 in the guideway 2a. It is provided.
[0022]
Between the boundary between the river 1 and the branch channel 3, that is, between the river 1 and the guide space 2, there is provided a weir 4 which is set higher than the normal water level of the water W flowing through the river 1. In normal times, the water W flows only through the river 1 and does not flow into the branch channel 3. However, when the amount of water increases abnormally due to heavy rain, overflow water passes over the weir 4 and branches into the branch channel 3. It is designed to flow into. At the upper end of the weir 4, four rotary disk screens 5 are arranged in series, and when overflow water flows into the branch channel 3 due to abnormal rise of the river 1, each of the disk screens 5 is rotated to rotate the river. 1 is prevented from flowing into the branch waterway 3 through the weir 4 together with the overflow water.
[0023]
In each of the disk screens 5, a large number of disks 7 are mounted coaxially at intervals (for example, 4 mm or less) on a shaft 6 extending in the up-down direction. The outer circumferences of the disks 7 are arranged so as to approach each other at a predetermined interval (for example, 2.3 mm). The shaft 6 of each disk screen 5 is rotatably supported by bearings (not shown) on support members 8 arranged above and below the weir 4.
[0024]
The driven sprocket 9 and the linking sprocket 10 are fixed to the upper end of the shaft 6 of the disk screen 5 at the left end in FIG. Two linking sprockets 10 are fixed to the upper end of each of the six, and two linking sprockets 10 of the adjacent disk screen 5 are drivingly connected by an endless linking chain 11.
[0025]
On the other hand, an impeller 12 that is rotated by the flow of overflow water is installed in a vertical portion that is an inlet of the branch waterway 3, and the impeller 12 has a plurality of blades 15 The upper end of the vertical shaft 14 is supported by the support member 13 and is rotatably supported on the vertical portion of the branch waterway 3 around the vertical shaft 14.
[0026]
One drive sprocket 16 is fixed to the upper end of the vertical shaft 14 of the impeller 12. The drive sprocket 16 is drivingly connected to a driven sprocket 9 fixed to the upper end of the shaft 6 of the disk screen 5 by an endless drive chain 17. Accordingly, each of the disk screens 5 is driven and connected to the impeller 12 by a chain sprocket mechanism including the driven sprocket 9, the linking sprocket 10, the linking chain 11, the driving sprocket 16, and the driving chain 17, and the rotational force is transmitted. It is configured to rotate by being performed.
[0027]
On the river 1 side between the adjacent disk screens 5, a shielding column 18 is provided upright so as to cover an interval between the adjacent disk screens 5. On the branch channel 3 side of each disk screen 5, a large number of dust removing plates 19 are vertically spaced from each other on the column 20 so as to correspond to the disk 7 adjacent above and below each disk screen 5. The dust removing plates 19 are supported and arranged, and are inserted between the vertically adjacent disks 7 to remove dust that has entered between the disks 7 by rotating the disk screen 5.
[0028]
Accordingly, the floating screen intrusion prevention device S according to the first embodiment of the present invention is constituted by the disk screen 5, the impeller 12, the chain sprocket mechanism for driving and connecting these, the shielding column 18, the dust removing plate 19, and the like. I have.
[0029]
Then, when the river 1 abnormally increases due to heavy rain and the water W overflows over the weir 4, the overflow water is guided from the guidance space 2 to the branch channel 3, and the impeller 12 is rotated by the water flow falling by its own weight. . This rotational force is transmitted to each disk screen 5 via the chain sprocket mechanism, and each disk screen 5 rotates synchronously in the same direction as the flow of the river 1, thereby branching the suspended matter flowing through the river 1. Intrusion into the water channel 3 is prevented.
[0030]
As described above, in the first embodiment, the impeller 12 is automatically rotated by the flow of the overflow water of the river 1 and the rotational force is transmitted to the disk screen 5. As soon as 5 overflows, it can be rotated immediately. In addition, since no motor is required, the cost can be saved by that much, and the disk screen 5 can be surely rotated by avoiding the inoperable state due to the failure of the motor.
[0031]
Further, in the first embodiment, since the impeller 12 is rotatably supported on the vertical portion of the branch channel 3 so as to be rotatable around the vertical axis 14, the impeller 12 is efficiently moved by the force of the overflow water that falls by its own weight. Can be rotated.
[0032]
Furthermore, in the first embodiment, since the shielding columns 18 are erected between the adjacent disk screens 5, even if the floating material flowing in the river 1 approaches the disk screen 5, the floating material disk Entanglement between the screens 5 can be prevented so as not to enter the branch waterway 3.
[0033]
In addition, since the dust removing plate 19 is inserted between the adjacent discs 7 above and below the disc screen 5, dust that has entered between the discs 7 is rotated by the disc screen 5, and the dust removing plate 19 rotates. By removing the disk screen 5, clogging of the disk screen 5 can be prevented, and the water W flowing through the river 1 can smoothly flow into the branch waterway 3.
[0034]
As shown in FIG. 5, a tributary 1a may be provided in the river 1, and the above-mentioned suspended matter intrusion prevention device S may be installed in the tributary 1a.
[0035]
(Embodiment 2)
3 and 4 show an example in which the suspended matter intrusion prevention device S according to Embodiment 2 of the present invention is applied to a river 1 as a main waterway. In this example, a weir 4 is provided in the middle of the river 1 and the suspended matter intrusion prevention device S is installed therein. Three disk screens 5 are arranged in series while drawing a curve. The impeller 12 is supported by a V-shaped projecting portion 2 b projecting upward from one side of the weir 4. Otherwise, the configuration is the same as that of the first embodiment. Therefore, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0036]
Therefore, in the second embodiment, the same functions and effects as those of the first embodiment can be obtained.
[0037]
In addition, as shown in FIG. 6, the suspended matter intrusion prevention device S as described above may be installed at the corner of the river 1.
[0038]
(Embodiment 3)
7 and 8 show an example in which the suspended matter intrusion prevention device S according to Embodiment 3 of the present invention is applied to a river 1 as a main waterway. In this example, six disk screens 5 are arranged in series, and the disks 7 of adjacent disk screens 5 are rotatably meshed with each other. Otherwise, the configuration is the same as that of the first embodiment. Therefore, the same components are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0039]
Therefore, also in the third embodiment, the same operation and effect as in the first embodiment can be obtained.
[0040]
In each of the above embodiments, the case where the suspended matter intrusion prevention device S is applied to the river 1 has been described, but the invention can also be applied to a sewer pipe.
[0041]
【The invention's effect】
As described above, according to the inventions according to Claims 1 to 7, an impeller is installed in a branch waterway branched from the main waterway, and the impeller is rotated by overflow water, and the rotational force is applied to the disk screen. By transmitting and rotating the disc screen, suspended matter is prevented from flowing into the main channel, so that the disc screen can be rotated simultaneously with overflow of the main channel. In addition, since no motor is required, the cost can be reduced, and the disk screen can be reliably rotated since there is no failure of the motor. In particular, according to the invention according to claim 3, the impeller is rotatably supported around the vertical axis on the vertical portion of the branch waterway, so that the impeller can be efficiently rotated by the force of the falling overflow water. it can. According to the fifth aspect of the present invention, since the shielding pillars are erected between the adjacent disk screens to cover the gaps, the floating matter flowing through the main waterway enters the branch waterway through the space between the disk screens. Can not be. Furthermore, according to the invention according to claim 6, since the dust removing plate is inserted between the adjacent disks of each disk screen, dust that has entered between the disks is removed so as not to be clogged and flows through the main waterway. Water can flow smoothly into the branch waterway.
[Brief description of the drawings]
FIG. 1 is a plan view in which a suspended matter intrusion prevention device according to a first embodiment is applied to a river.
FIG. 2 is a sectional view of FIG. 1 as viewed from the left.
FIG. 3 is a plan view in which a suspended matter intrusion prevention device according to Embodiment 2 is applied to a river.
FIG. 4 is a sectional view of FIG. 3 as viewed from the left.
FIG. 5 is another application example of the suspended matter intrusion prevention device according to the first embodiment.
FIG. 6 is another application example of the suspended matter intrusion prevention device according to the second embodiment.
FIG. 7 is a plan view in which a suspended matter intrusion prevention device according to Embodiment 3 is applied to a river.
FIG. 8 is a view of the suspended matter intrusion prevention device in FIG. 7 as viewed from the opposite shore side.
[Explanation of symbols]
1 river (main waterway)
3 Branch waterway 5 Disk screen 6 Shaft 7 Disk 12 Impeller 18 Shielding column 19 Dust removal plate S Floating substance intrusion prevention device

Claims (7)

Rotating the impeller installed in the branch channel branched from the main channel with overflow water due to abnormal increase in the main channel,
Transmitting the rotational force of the impeller to a rotary disk screen, which is installed at the boundary between the main waterway and the branch waterway and has a number of disks mounted on a shaft at intervals, to rotate the disk screen. A method for preventing suspended matter from entering the branch waterway by preventing suspended matter flowing through the main waterway from entering. A rotary disc screen is provided at the boundary between the main waterway and the branch waterway branching off from the main waterway, and a number of disks are attached to the shaft at intervals.
When overflow water flows into the branch waterway due to abnormally increasing water in the main waterway, a floating material intrusion prevention device that rotates the disc screen to prevent the floating material flowing through the main waterway from entering the branch waterway,
An impeller that is rotated by the overflow water flow is installed in the branch waterway,
The floating screen intrusion prevention device, wherein the disk screen is configured to be driven by being connected to the impeller and to be rotated by transmitting its rotational force. The suspended matter intrusion prevention device according to claim 2,
The suspended object intrusion prevention device, wherein the impeller is rotatably supported on a vertical portion of a branch waterway so as to be rotatable around a vertical axis. The suspended matter intrusion prevention device according to claim 2,
A plurality of disk screens are arranged in series with their shafts directed in the vertical direction, and the outer periphery of each disk of adjacent disk screens is close to each other with a predetermined interval, thereby preventing floating substance intrusion. apparatus. The suspended matter intrusion prevention device according to claim 4,
A floating substance intrusion prevention device characterized in that a shielding column is erected between adjacent disk screens so as to cover a gap. The suspended matter intrusion prevention device according to claim 4,
A floating substance intrusion prevention device characterized in that a dust removing plate for removing dust that has entered between the disks is inserted between adjacent disks of the disk screen. The suspended matter intrusion prevention device according to claim 2,
A floating object intrusion prevention device, wherein a plurality of disk screens are arranged in series, and each disk of adjacent disk screens is rotatably meshed with each other.

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