WO2020031814A1 - Debris removal device for waterways - Google Patents

Abstract

[Problem]To provide a debris removal device for waterways that is installed in a water intake that takes in water flowing in an open channel main waterway, such as an agricultural waterway, to feed to a branching waterway that branches from the main waterway and that removes debris from the water flow taken into the branching waterway, such that the device can be easily installed in the main waterway, be operated by the power of the water flowing in the main channel, is not impacted by changes in water level, and does not require a special waste treatment device because the debris trapped in the debris removal device flows downstream in the main waterway. [Solution] A debris removal device 4 for waterways comprises a rotary body 5 that is installed so as to enclose a water intake 13 opened to a branching waterway, and a plurality of vanes 9 that are provided on the outer circumference of the body of the rotary body 5 at regular intervals in the circumferential direction and that cause the rotary body 5 to rotate by way of receiving the force of the water flow 3 in the main water channel. The rotary body 5 comprises a screen 25 that is over almost the entire area of the cylindrical body to be rotated and that traps debris, and the rotary body has a shape of a polygonal column squirrel cage held so as to rotate about the rotary shaft 10 of the rotary body.

Description

Waste removal equipment for waterways

The invention of the present application is provided at a water intake that takes in flowing water flowing through the main waterway in a branch waterway branched from an open waterway-like main waterway such as an agricultural waterway, and grass and tree branches from runningwater taken into the branch waterway. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water line dust removing device for removing dust such as leaves and leaves, and more particularly to a water channel dust removing device that operates by the force of a water flow flowing through a main water passage and does not require a device such as a rake that requires external power.

There is a problem that dirt such as grass and tree branches and leaves may flow into the open main canals such as agricultural irrigation canals, clogging the branch irrigation canals. However, there is a problem that the dust is caught by the power generation turbine and hinders the rotation of the water turbine. Further, there is a problem that the water level in the main waterway rises remarkably and the amount of waste flowing in suddenly increases due to the influence of rainfall or the like.

Conventionally, in order to solve such a problem, various kinds of dust removing apparatuses have been proposed.
For example, as described in Japanese Patent No. 3768518 (Patent Document 1), there is a method in which dust is trapped by a plate-shaped bar screen and dust on the bar screen is scraped by a comb-shaped plate called a rake. Although this is the most common refuse removal device, it requires power to move the rake and also requires a device for discharging the scraped refuse.
Also, if the main waterway increases due to rain and the amount of waste flowing in increases, it is necessary to increase the operating speed of the rake, and the power source such as the motor must have the maximum operating speed of the rake and the maximum A large output is required assuming a large amount, and in the case of normal use, not only is it wasteful, but also a mechanism to detect the increase in water and control the operating speed of the rake is required, which raises the problem that the cost increases. .

Further, in order to solve the problem of rising water level, in an example described in Japanese Patent Application Laid-Open No. 2000-84551 (Patent Document 2), an endless float type fence is used to catch dust. .
In this example, it is possible to cope with fluctuations in the water level of the main canal, but a separate waste collection facility is required, and there is a problem with the drive power of the float fence to cope with the increased waste due to increasing water, There is a problem similar to that of Patent Document 1, such as a problem of controlling the rotation speed.

Further, in order to solve the problem of the treatment of garbage scraped with a rake or the like, those described in JP-A-2013-7376 (Patent Document 3) and JP-A-7-62633 (Patent Document 4) are disclosed. Proposed.
According to Japanese Patent Application Laid-Open No. 2013-7376 (Patent Document 3), a curved screen is provided at an inlet of water to a water turbine, and dust trapped on the screen is subjected to water flow from an upstream side to be disposed in an upper portion of the water turbine section. The structure is such that it is swept downstream through the space.
However, this structure has a problem in that when the amount of water is reduced, the flow velocity is also reduced, so that the force for pushing away dust on the screen is insufficient.

Japanese Patent Application Laid-Open No. 7-62633 (Patent Document 4) has a structure in which a bar screen is inclined toward the main waterway, and trash picked up by a rake is dropped onto the main waterway.
In this case, in addition to the problem that a part of the garbage discarded to the main waterway side flows into the bar screen, there is also a problem of rake driving power and speed control to cope with a rise in water level. There is a similar problem with.

As a method for removing dust trapped on a screen, a method described in Japanese Patent Application Laid-Open No. 2004-275942 (Patent Document 5) has been proposed.
This has a structure in which when a part of water passing through the drum-shaped screen flows out from the inside of the drum-shaped screen, the screen is backwashed from the inside to remove dust.
In this case, unless the debris removed from the screen surface is flown to another water channel or the like, in the case of a water turbine power generation requiring a large head, the debris cannot be separated. Further, depending on the diameter of the drum-shaped screen, when water is increased, there is a possibility that dust may flow over the drum-shaped screen and flow downstream. Further, there is a problem that a mechanism for rotating the drum screen is required.

Japanese Patent Application Laid-Open No. 54-182745 (Patent Document 6) proposes using a blade rotating by a water flow as a power source for rotating the device. In this case, the movable range of the blade ( (Rotational range), it can be used as a power turbine to generate torque, but there is a problem that a screen for trapping dust cannot be installed.

Japanese Patent No. 3768518 JP 2000-84551 A JP 2013-7376 A JP-A-7-62633 JP 2004-275942 A Published Utility Model Showa 54-182745

The invention of the present application solves the above-mentioned problems of the conventional waterway refuse removing device that removes refuse from flowing water taken into the branch waterway, and can be easily installed in the main waterway, and the main waterway can be installed. It operates with the power of flowing water, does not require equipment that requires external power such as a rake, and operates without being affected by changes in water level, even if the water level in the main waterway changes significantly due to the effects of rainfall. Furthermore, it is an object of the present invention to provide a waterway refuse removing device in which garbage such as grass and twigs flowing and trapped in the refuse removing device is caused to flow downstream of the main waterway, thereby eliminating the need for a special refuse treatment device. And

The above problems are solved by the following inventions described in each claim of the present application.
That is, the invention described in claim 1 is provided at a water intake that takes in the flowing water flowing through the main waterway in a branch waterway branched from an open waterway main waterway such as an agricultural waterway, and is taken into the branch waterway. For removing dirt from flowing water, wherein the dirt removal device for a water channel is installed so as to surround the intake port, and traps dirt in substantially the entire area of the rotating cylindrical body. A rotating body having a cage shape of a polygonal prism or cylinder, and a rotatable body that is rotatably held about a rotation axis thereof, and a circumferential direction on an outer peripheral portion of the body of the rotating body. A plurality of blades, which are provided at equal intervals and rotate the rotating body by receiving the force of water flow, and rotate in a manner capable of inverting itself, and a plurality of the blades are provided at an outer peripheral portion of the body portion of the rotating body. In parallel with the rotation axis Each of the blades is provided rotatably and has a rib also serving as a stopper for stopping the rotation, and when the blade rotates toward the downstream of the water flow together with the rotating body, the stopper is pushed by the water flow to rotate the stopper. It rotates until it hits the outer periphery of the body part of the body, and when it is fixed at that position, it receives the water flow and generates the rotating force of the rotating body, and the blade rotates with the rotating body toward the upstream of the water flow. When it does, it rotates in the opposite direction due to the resistance of the water flow, automatically displaces to the angle with the least resistance to the water flow, flows from the upstream of the main channel, traps on the screen and the blades The garbage is transported to the downstream side of the main channel by the rotation of the rotating body, and is separated and separated by a part of flowing water flowing inside the rotating body and flowing water flowing outside the rotating body. A waterway for dust removing apparatus characterized by being off downstream of the main water channel with flowing water.

The invention described in claim 2 is the water channel waste removing apparatus according to claim 1, wherein the water intake port is installed in parallel with a bottom surface of the main water channel.

Further, the invention described in claim 3 is that the vortex preventing plate for preventing vortices generated when flowing water of the main water channel is sucked into the water intake port is provided at the inlet portion of the water intake port. The wastewater removal device for a waterway according to claim 1 or 2, wherein:

The invention described in claim 4 is characterized in that the screen has a detachable structure, and is replaceable according to the type and shape of refuse flowing through the main waterway. 4. The water channel waste removing apparatus according to any one of Items 1 to 3, wherein

In addition, the invention described in claim 5 is provided at a water intake that takes in the flowing water flowing through the main waterway in a branch waterway branched from an open waterway-like main waterway such as an agricultural waterway, and is taken into the branch waterway. A water channel waste removal device for removing dust from flowing water, wherein the water channel waste removal device is installed so as to surround the water intake, and a plurality of filter plates provided with a screen for trapping dust are adjacent to each other. A rotating body having an endless track shape, which is rotatably connected via a connecting pin between the filter plates and is rotatably held around a pair of sprockets, and an outer peripheral portion of the rotating body, in a circumferential direction. A plurality of blades are provided at equal intervals and rotate the rotator by receiving the force of water flow, and refuse flowing from upstream of the main waterway and trapped by the screen or the blades is rotated by the rotation. of a body The water is conveyed to the downstream side of the main waterway, and is separated and separated by a part of the flowing water flowing inside the rotating body and the flowing water flowing outside the rotating body, and is separated together with the flowing water downstream of the main waterway. This is a wastewater removal device for a water channel, characterized by being discharged to a drain.

Further, according to the invention described in claim 6, each of the plurality of filter plates constituting the rotator includes an elongated grid-like frame, and a space surrounded by a grid inside the frame. The screen is provided, and the plurality of blades are provided on the outer peripheral portion of the frame of every other one of the plurality of filter plates, and both rotating shafts of the pair of sprockets In parallel with each other, each of the blades is provided rotatably and has a rib that also serves as a stopper for stopping the rotation.When the blade rotates toward the downstream of the water flow together with the rotating body, the blade is pushed by the water flow and When the stopper rotates until it hits the outer peripheral portion of the frame body of the filter plate, and is fixed at that position, it receives a water flow to generate a rotating force of the rotating body, and the blades are upstream of the water flow together with the rotating body. When turning towards Rotates in the opposite direction by the resistance of the water flow is automatically waterway for dust removing apparatus according to claim 5, wherein the displaced most of least resistance angle to water flow.

The invention described in claim 7 is the water channel waste removing device according to claim 5 or 6, wherein the water intake port is installed in parallel with a bottom surface of the main water channel.

The invention described in claim 8 is characterized in that a vortex preventing plate for preventing a vortex generated when flowing water is sucked into the water intake is provided at an inlet of the water intake. Item 8. A water channel waste removing apparatus according to any one of Items 5 to 7.

The invention described in claim 9 is characterized in that the screen has a detachable structure, and is replaceable according to the type and shape of refuse flowing through the main waterway. 9. The water channel waste removal apparatus according to any one of items 1 to 8.

Since the invention of the present application is configured as described above, the following effects can be obtained.
A screen for trapping trash is provided almost all around the rotating tubular body, which is installed so as to surround the water intake that takes in the flowing water flowing through the main waterway in the branch waterway, and a polygonal prismatic or cylindrical basket type Is rotated by the force of the water flow received by the plurality of blades provided on the outer peripheral portion of the body of the rotating body, so that it flows from the upstream of the main channel and is trapped by the screen and the blades. Garbage such as grass and tree branches and leaves is carried to the downstream side of the main waterway by the rotation of the rotating body, where there is some flowing water flowing inside the rotating body and flowing water outside the rotating body, It is peeled off from the screens and blades, pulled away, and flows down the main channel along with running water.
This eliminates the need for a device that requires external power, such as a rake, to remove dust trapped on the screens and blades, and removes debris from the running water in the main water channel that flows from the inside of the rotating body to the branch water channel through the water intake. It can be automatically removed without power. Also, a special waste disposal device for treating the removed waste is not required.
Furthermore, these make the structure of the waterway dust removing device simple and can be easily installed in the main waterway.

A plurality of rotatable (invertible) blades provided on the outer peripheral portion of the body of the rotating body include ribs serving also as stoppers for stopping the rotation of the blades, and the blades, together with the rotating body, are located downstream of the water flow. When the rotation is made toward the rotating body, the stopper is rotated by the water flow until the stopper hits the outer peripheral portion of the body of the rotating body. When the stopper is fixed at that position, the rotating body receives the water flow and generates a rotating force of the rotating body. Also, when the blade rotates with the rotating body toward the upstream of the water flow, the blade rotates in the opposite direction due to the resistance of the water flow, and is automatically displaced to an angle having the least resistance to the water flow, and the blade is subjected to resistance. It is prevented from becoming.
For this reason, since the rotating body is efficiently rotated by the force of the water flow, the rotating body can be rotated without external power such as a motor.

Furthermore, due to such a structure, when the speed of the flowing water in the main channel changes, the rotation speed of the rotating body also changes automatically. Therefore, even if the water in the main channel increases due to rain, etc., and the amount of waste flowing in increases, the rotating speed of the rotating body also increases, so the amount of waste transported downstream also increases, so There is no garbage.

In addition, since the water intake is installed parallel to the bottom of the main waterway, the rotating body installed so as to surround the water intake is centered on a rotation axis arranged in a direction perpendicular to the bottom of the main waterway. To be rotatable and installed vertically with respect to the bottom of the main channel. For this reason, even if the water surface of the main waterway rises and falls due to a change in the amount of water, the water can rotate without being affected by the change.

In addition, at the inlet of the water intake, a vortex prevention plate is provided to prevent the vortex generated when the water in the main channel is sucked into the water intake. In the case of a device or the like, the effective head can be increased.

Furthermore, since the screen is configured to be detachable from the rotating body and can be replaced according to the type and shape of the refuse flowing through the main channel, the screen differs depending on the place where the trash removal device for the channel is installed. The most suitable screen can be installed according to the type and shape of the incoming garbage.

Further, when the rotating body has a shape of an endless track in which a plurality of filter plates having a screen for trapping dust are connected and held rotatably around a pair of sprockets, filtration is performed. By providing a large number of plates, it is possible to increase the filtration area of the entire rotating body, so that while keeping the amount of water flowing into the intake, the screen is made finer and smaller dust can also be trapped. become able to.

Furthermore, in this case, since the installation shape of the rotating body is oblong when viewed from above, the position of the water intake can be arranged on the upstream side of the main waterway from the center of the rotating body, and the water flowing into the water intake can be arranged. Can be reduced from affecting the water flow passing through the rotating body and flowing downstream of the main waterway. As a result, the backwash effect on the downstream side of the main water channel of the screens and blades of the filter plate of the rotating body can be enhanced.

It is a perspective view of the installation state of the dirt removal apparatus for waterways of the 1st Example of the invention of this application. It is a perspective view of the installation state of the dirt removal apparatus for waterways of the 1st Example of this invention of this application, Comprising: It is a figure which removes a screen from a rotating body, and shows it. FIG. 3 is a perspective view of the waterway dust removing device, showing the water channel dust removing device assembled with a water guide box. It is a perspective view of the frame of the rotating body of the same water channel refuse removal apparatus. It is a perspective view of the blade | wing provided in the rotating body of the same dirt removal apparatus for waterways. It is a top view in the state where the blade was attached to the frame of the rotating body of the same waterway dust removal apparatus, and is a figure explaining operation of the rotating body and a blade which generate | occur | produce by a water flow. It is each front view of two types of screen materials used for the screen of the same water channel refuse removal apparatus. It is a perspective view of the state where the screen was attached to the rotating body of the same refuse removal device for waterways. It is a perspective view of the installation frame of the same refuse removal device for waterways. It is a perspective view of the frame skeleton part which removes and shows a bottom plate from the installation frame of the same refuse removal apparatus for waterways. FIG. 3 is a perspective view of a water guide box used in the waterway dust removing device. It is a perspective view of the dirt removal apparatus for waterways of the 2nd Example of this invention. It is a perspective view of a dirt removal device for waterways of a 2nd example of the invention of this application, and is a figure which removes and shows a screen from a rotating body. It is a perspective view which shows the connection structure of the some filter plate of the rotating body of the same dirt removal apparatus for waterways, and is a figure which removes a screen from a filter plate and is shown. It is a side view of the frame of the filtering plate with blades of the rotating body of the waterway refuse removal apparatus. It is the perspective view which looked at the back of the frame of the filter board with the blade of the rotating body of the same canal removal device from the diagonally upper left. It is a perspective view of the filter plate with a blade of the rotating body of the same water channel dust removal apparatus, and is a figure which removes a screen from a filter plate and is shown. It is the perspective view which looked at the back surface of the frame of the bladeless filter plate of the rotating body of the same water-waste removal apparatus from diagonally upper left, and is a figure corresponding to FIG. It is the perspective view which looked at the surface of the vaneless filter plate of the rotating body of the same dirt removal apparatus from the diagonally left upper side, and shows the state in which the screen was attached to the filter plate. It is a top view of the dirt removal apparatus for the same waterway. It is a perspective view of the sprocket part of the same refuse removal apparatus for waterways. It is a perspective view of the installation frame of the same water channel refuse removal device, and is a figure also showing the state where a pair of sprockets and a pair of guide rails were attached.

(Example 1)
Next, a first embodiment (Embodiment 1) of the waterway dust removing apparatus of the present invention will be described in detail with reference to the drawings.
The wastewater removal device for a waterway according to the first embodiment includes a waterway that takes in water flowing through the main waterway into a small-scale hydropower generation or irrigation waterway that branches off from an open waterway-like main waterway such as an agricultural waterway. It is a device that removes debris such as grass, tree branches and leaves flowing from the main channel from running water of the main channel that is installed and taken into the branch channel. By this device, most of the refuse is removed from the running water taken into the branch channel through the intake before passing through the intake.

(Summary of installation structure and operation of trash removal equipment for waterways)
First, a description will be given of an installation structure of the waterway dust removing apparatus according to the first embodiment and an outline of its operation.
FIGS. 1A and 1B are perspective views showing a state in which the water channel waste removing device 4 of the first embodiment is installed in the main water channel 1. FIG. FIG. 1B shows a screen 25 removed from the rotating body 5 of the water channel waste removing apparatus 4 of FIG. 1A in order to make the whole structure of the apparatus easy to understand.
FIG. 2 is a perspective view of the waterway refuse removing device 4, and shows a state assembled together with a water guide box 8 (see FIG. 10 for details).
In the following, the "water channel waste removal device 4" may be abbreviated as "the waste removal device 4".

As shown in FIGS. 1A and 1B, the waterway dust removing device 4 of the first embodiment is fixedly installed at the bottom of the main waterway 1 with an installation frame 6 that forms an outer frame of the same dust removing device 4. You.
In the installation frame 6, a rotating body 5, which is a main part of the dust removal device 4, is rotatably mounted with its rotating shaft 10 (see FIG. 2) perpendicular to the bottom surface of the main waterway 1. Of the plurality of blades 9 provided on the outer peripheral portion of the cylindrical body of the rotating body 5, and the rotating body 5 rotates. . The rotating body 5 is provided with a screen 25 for trapping dust in substantially the entire area of its body.

The installation frame 6 is provided with a bottom plate 7 at a position directly below the rotating body 5, and the bottom plate 7 has a square shape at a position slightly eccentric from the center as shown in FIG. An opening 23 is formed (see FIGS. 2 and 8). The opening 23 is formed so as to be surrounded by the rotating body 5 in plan view. A vortex prevention plate 15 composed of a plurality of blades is provided on the bottom plate 7 so as to cover the opening 23.
As shown in FIGS. 1 a, 1 b and 8, the bottom plate 7 has a ring-shaped outer shield plate 18 for preventing inflow of dust and sand from the lower part of the rotating body 5, an opening 23 and a vortex prevention. It is attached by welding so as to surround the plate 15.
Further, a water guide box 8 is installed on the bottom surface of the main channel 1 directly below the bottom plate 7, and the water intake 13 (see FIGS. 2 and 10) is connected to the opening 23 of the bottom plate 7. And both are surrounded by the rotating body 5.

Since the waterway dust removing device 4 of the first embodiment is installed as described above, the device operates as follows.
Now, when the rotating body 5 of the dust removal device 4 is rotated by the water flow 3 of the main channel 1 as described above, the screen 25 and the plurality of blades 9 (especially the blades that are pushed by the water flow 3 to rotate the rotating body 5). 9) traps large and small trash such as grass, tree branches and leaves. The blade 9 is suitable for trapping large debris, and the screen 25 is suitable for trapping small debris.
These trapped debris are then carried by the further rotation of the rotating body 5 to the downstream side of the main channel 1, where some of the flowing water flows inside the rotating body 5 and outside the rotating body 5. The water is separated from the screen 25 and the blades 9 by the flowing water, is separated from the screen 25 and the blades 9, flows out of the main waterway 1 together with the flowing water, and flows away.

At the same time, the remaining running water flowing inside the rotating body 5 is directed toward the opening 23 and the water inlet 13 of the bottom plate 7, is sucked there, is taken into the water guide box 8, and is guided to the water guide box 8. Then, the water flows into the branch waterway 2 through the water outlet 14. As an example of the branch waterway 2, FIGS. 1A and 1B show a water conveyance pipe for hydroelectric power generation.
The running water flowing inside the rotating body 5 is the running water that has passed through the screen 25 and flowed into the inside of the rotating body 5, and all of the dust has been removed and the running water is clean.

(Overall structure of waterway waste removal device)
Next, the overall structure of the water channel waste removing apparatus 4 of the first embodiment will be described in more detail.
FIG. 2 is a perspective view showing the entire structure of the waterway dust removing device 4.
As shown in FIG. 2, the waterway dust removing device 4 is installed so as to surround the water intake 13, and a screen 25 for trapping dust is provided on substantially the entire area of the rotating cylindrical body, and a rotating shaft is provided. A rotating body 5 having a polygonal (in the present embodiment, 18-octagonal) prismatic basket-like shape held rotatably about 10 and an outer peripheral portion of a polygonal cylindrical body of the rotating body 5 A plurality of blades 9 which are provided at equal intervals in the circumferential direction and rotate the rotating body 5 by receiving the force of the water flow 3; And an installation frame 6 for installing this in the main waterway 1 (see FIGS. 1a and 1b).
Here, “invertible” in the “plurality of blades 9 that can rotate freely” means “movable freely to fall or stand up”. This will be easily understood later from the description in paragraphs [0045] to [0047], which describe the operation of the blade 9.
Hereinafter, each of these components will be described in more detail.

(Installation frame)
First, the installation frame 6 will be described.
8 shows a perspective view of the entire structure of the installation frame 6, and FIG. 9 shows a frame structure of the installation frame 6 with the bottom plate 7 removed.
The installation frame 6 forms an outer frame of the waterway dust removing device 4. By fixing this to the bottom of the main waterway 1, the installation position of the rotating body 5 in the main waterway 1 is also determined. The installation position of the rotating body 5 is set such that the rotating body 5 surrounds the water intake 13 that takes in the flowing water flowing through the main channel 1 into the branch channel 2 in plan view.
The installation frame 6 is made of a metal material, and includes a frame framework 6 ′ (see FIG. 9) having a cubic frame structure and a bottom plate 7.

The frame skeleton portion 6 ′ is connected to an upper frame portion 38 formed by assembling frame pieces in a cross, a lower frame portion 39 formed in the same manner, and the upper and lower frame portions 38 and 39 are connected by four corners. And four vertical frame pieces 40. An upper bearing 11 and a lower bearing 12 for bearing the rotating shaft 10 of the rotating body 5 are provided at the center of each of the crosses of the upper and lower frame portions 38 and 39, respectively.
Then, the bottom plate 7 is placed on the lower frame portion 39 and fixed, and the installation frame 6 is configured. The vertical frame piece 40 extends downward from the lower frame portion 39 so that a sufficient space for placing the water guide box 8 below the lower frame portion 39 remains.
The opening 23 connected to the water intake 13 is formed in the bottom plate 7, the vortex preventing plate 15 is provided thereon, and the outer shield plate 18 is attached thereto, as described above.

(Rotating body)
Next, the rotating body 5 will be described.
FIG. 3 shows the entire structure of the frame of the rotating body 5 of the waterway dust removing device 4.
The frame of the octagonal prism-shaped rotating body 5 is configured such that a plurality of (here, 18) rectangular frame-shaped surface frames 41 forming a frame of each surface are connected in the circumferential direction.
The surface frame 41 is made of a metal material, and has a shape in which the inside of a rectangular outer frame is divided into two by a partition frame piece, and on each surface of the outer frame and the partition frame piece, The blade mounting bracket 16 for mounting is mounted on the upper end and the center of the surface frame 41 so that the blade 9 can be turned upside down on a straight line along the longitudinal direction and parallel to the rotation axis 10. , At the lower end, where the blades 9 are attached via pins 22 (see FIG. 5).

{Circle around (4)} In the surface frame 41, screen materials are respectively stretched in two space portions formed by dividing the inside of the outer frame into two by partition frame pieces. FIG. 7 shows the rotating body 5 provided with the surface frame 41 on which the screen material is stretched as described above over the entire outer peripheral portion of the body portion.

Here, as the screen material, there are a bar screen 25a and a mesh screen 25b as shown in FIG. 6, and here, the bar screen 25a is employed.
The bar screen 25a is typical as a screen for trapping dust, and is configured such that flat and long plate-shaped members are arranged side by side in a comb shape in a metal frame.
Further, the mesh screen 25b is formed by attaching a wire net to a metal frame.

A rotating shaft 10 is provided at the center of the rotating body 5, and the rotating shaft 10 is supported by an upper bearing 11 and a lower bearing 12 provided on the installation frame 6. Thus, the rotating body 5 is rotatably mounted and held in the installation frame 6.
At the lower end of the rotating body 5, an inner shield plate 17 for preventing dust and sand from flowing into the rotating body 5 is attached. The inner shield plate 17 is fitted concentrically with an appropriate gap inside an outer shield plate 18 provided on the bottom plate 7, and cooperates with the outer shield plate 18 to remove garbage flowing therethrough. Sand is prevented from entering the inside of the rotating body 5.

The rotating body 5 thus configured has a body portion composed of a connection body of 18 face frames 41 on which a screen material is stretched, and six radially supporting the body portion around the rotation axis 10. The body part support means 47a and 47b including the body part support means 47a and 47b, which are composed of a set of support rods arranged, have a basket-like shape of a polygonal prism. ing.

(Feather)
Next, the blade 9 will be described.
FIG. 4 shows the blade 9 viewed from the back side (the side not receiving the water flow).
The blade 9 is made of a metal material, and is a rectangular plate body having a length in the length direction of the rectangular surface frame 41. Ribs 19 for reinforcing the blades 9 are attached by welding in correspondence with the positions of the blade mounting brackets 16 provided at the three locations of the lower portion and the lower portion. Further, the leading edge is bent by a small length at a right angle in the direction opposite to the side where the rib 19 is attached.
A pin hole 21 is formed in the rib 19, and the pin 9 is passed through the pin hole 21 and the pin hole provided in the blade mounting bracket 16 so that the blade 9 can be turned upside down (FIG. 5). , See partially enlarged view A).
At the end of the rib 19, a stopper portion 20 is formed so as to protrude. The stopper portion 20 is configured such that the blade 9 is pushed by the water flow 3 and the body portion of the rotating body 5 (the connection of the plurality of surface frames 41). When it comes to a position perpendicular to the surface, the blade 9 stops rotating and the blade 9 is temporarily fixed at that position.

(Operation of the blade)
FIG. 5 shows the dirt removal device 4 for a water channel placed in the water flow 3 when the installation frame 6 is removed and viewed from directly above.
FIG. 5 shows a state where the blade 9 attached to the surface frame 41 of each surface of the rotating body 5 is displaced by the water flow 3 at the inverted angle. Further, when the blade 9 is displaced by the inverted angle, a change in a state in which the stopper portion 20 formed on the rib 19 provided on the blade 9 comes into contact with and separates from the outer peripheral surface of the surface frame 41. Are shown with partially enlarged views A and B.

The blade 9 is rotated by the force of the flowing water 3 flowing from the left side in the figure, and the stopper 20 provided on the rib 19 is, as shown in the partially enlarged view B, a surface of the outer periphery of the rotating body 5 (see FIG. More specifically, the rotation of the rotating body 5 is stopped at a position perpendicular to the outer circumferential surface of the rotating body 5 when the rotation of the rotating body 5 is stopped. Is done. In this fixed and upright posture, the blade 9 further receives the force of the water flow 3 and rotates the rotating body 5 counterclockwise in FIG. 5 (see arrow C).

In addition, when the blade 9 moves toward the upstream of the water flow 3 due to the further rotation of the rotating body 5, the blade 9 rotates rightward in FIG. It is displaced to an angle with the least resistance to the water flow 3.
The partially enlarged view A shows a state in which the blade 9 rotates clockwise as described above, and the stopper 20 provided on the rib 19 is separated from the outer peripheral surface of the rotating body 5.

(Water guide box)
Next, the water guide box 8 will be described in detail.
FIG. 10 shows the water guide box 8 viewed obliquely from above.
The water guide box 8 is made of a metal material, has a flat bent duct shape as a whole, and has a water intake port 13 directly below an opening 23 of the bottom plate 7 at a lower portion of the bottom plate 7 of the installation frame 6. Also, it is installed so as to be parallel to the bottom surface of the main waterway 1.
Then, the flowing water flowing from the opening 23 of the bottom plate 7 and the water intake 13 is passed through the water outlet 14 of the water guide box 8 to the branch waterway 2 such as a small hydraulic power generation water pipe or a branch waterway branched from the main waterway 1. Lead. During this time, the water guide box 8 guides the flow of the water flow 3 to the branch waterway 2 by bending the flow at a right angle.

(Behavior of running water, dust removal action)
Finally, the behavior of flowing water inside and outside the waterway dust removing device 4 and the dust removing action will be described.
As described above, while the blade 9 is rotating the rotating body 5 of the refuse removal device 4 under the force of the water stream 3, the flowing water flowing from the left side in FIG. Then, the light passes through the screen 25 stretched over the body of the rotating body 5 and flows into the rotating body 5. At this time, the refuse flowing along with the running water is trapped by the screen 25 and the blade 9.
Then, a part of the flowing water flowing into the rotating body 5 passes through the rotating body 5 as it is and flows out downstream of the main waterway 1. The remaining flowing water flows into a water intake 13 opened at a lower portion inside the rotating body 5, is taken into the water guide box 8, guided by the water guide box 8, and flows into the branch waterway 2 through the water outlet 14.

At this time, in the portion of the screen 25 that is located on the downstream side of the water flow 3 of the screen 25 that is stretched over substantially the entire region of the body of the rotating body 5, the part of the flowing water flows from the inside of the screen 25 to the outside. At the time of the outflow, the screen 25 and the blades 9 are backwashed, and the debris trapped by the screen 25 and the blades 9 are separated, separated and discharged to the downstream of the main waterway 1 together with running water.
In addition, flowing water flowing outside the rotating body 5 also separates debris trapped by the blades 9 from the blades 9 and flows out to the downstream of the main waterway 1 together with the flowing water.

(Effect of Embodiment 1)
Since the waterway dust removing device 4 of the first embodiment is configured as described above, the following effects can be obtained.
A screen 25 for trapping dust is provided in the branch waterway 2 so as to surround the water intake 13 for taking in the flowing water flowing through the main waterway 1, and a screen 25 for trapping dirt is provided in substantially the entire area of the rotating cylindrical body. ), The rotating body 5 having a basket-shaped shape of a prism rotates by the force of the water flow 3 received by the plurality of blades 9 provided on the outer peripheral portion of the body of the rotating body 5. The refuse such as grass and tree branches and leaves that have flowed and are trapped by the screen 25 and the blades 9 are carried to the downstream side of the main waterway 1 by rotation of the rotating body 5, where the Due to a part of the flowing water flowing inside and the flowing water flowing outside the rotating body 5, the water is separated from the screen 25 and the blades 9, separated and discharged to the downstream of the main waterway 1 together with the flowing water.
Specifically, the screen 25 and the blade 9 are backwashed and trapped by flowing water (the above-mentioned “partial flowing water”) that passes through the screen 25 and flows into the rotating body 5 and flows downstream. These wastes are separated from the screen 25 and the blades 9, separated, and discharged to the downstream of the main waterway 1 together with running water.
Also, due to the flowing water flowing outside the rotating body 5, these debris trapped by the blades 9 are separated from the blades 9 and flow down to the downstream of the main waterway 1 together with the flowing water.
For this reason, a device that requires external power such as a rake to remove dust trapped by the screen 25 and the blades 9 is not required, and the main water channel that flows from the inside of the rotating body 5 to the branch water channel 2 through the water intake 13 through the water intake 13. The waste can be automatically removed from the running water without power. Also, a special waste disposal device for treating the removed waste is not required.
Furthermore, since the structure of the waterway dust removing device 4 is simplified by these, it can be easily installed in the main waterway 1.

The plurality of rotatable (invertible) blades 9 provided on the outer peripheral portion of the body of the rotating body 5 are provided with ribs 19 which also serve as stopper portions 20 for stopping the rotation of the blades 9. When rotating toward the downstream of the water stream 3 together with the rotating body 5, the stopper 20 is pushed by the water stream 3 to cause the stopper 20 to rotate on the outer peripheral surface of the body of the rotating body 5 (the outer peripheral surface of the surface frame 41 of the rotating body 5). ), And when it is fixed at that position, it receives the water flow 3 and generates a rotating force of the rotating body 5. When the blade 9 rotates with the rotating body 5 toward the upstream of the water flow 3, the blade 9 rotates in the opposite direction due to the resistance of the water flow 3 and is automatically displaced to an angle with the least resistance to the water flow 3. Thus, the blade 9 is prevented from becoming a resistance.
For this reason, since the rotating body 5 rotates efficiently by the force of the water flow 3, it can rotate without external power such as a motor.

Furthermore, due to such a structure, when the speed of the flowing water in the main channel 1 changes, the rotation speed of the rotating body 5 also changes automatically. Therefore, even if the water in the main channel 1 increases due to rain or the like, and the amount of refuse flowing in increases, the rotation speed of the rotating body 5 also increases, so that the amount of refuse carried downstream increases. No garbage accumulates on body 5.

Further, since the intake 13 is installed in parallel with the bottom of the main channel 1, the rotating body 5 installed so as to surround the intake 13 is arranged in a direction perpendicular to the bottom of the main channel 1. The main water channel 1 is held vertically so as to be rotatable about a rotating shaft 10.
For this reason, even if the water surface of the main waterway 1 rises and falls due to a change in the amount of water, the water can be rotated without being affected by this.

Further, at the inlet of the water intake 13, a vortex preventing plate 15 for preventing vortices generated when the water of the main waterway 1 is sucked into the water intake 13 is provided, so that the water flowing through the branch waterway 2 is dropped. For example, in the case of a hydroelectric generator that generates electric power, the effective head can be increased.

Further, since the screen 25 is configured to be detachable from the rotating body 5 and can be replaced according to the type and shape of the refuse flowing in the main waterway 1, depending on the place where the waterway refuse removing device 4 is installed. The optimum screen 25 can be mounted according to the type and shape of the different refuse flowing.

(Example 2)
Next, a second embodiment (Embodiment 2) of the waterway waste removing apparatus of the present invention will be described in detail with reference to the drawings.
Note that, in the waterway dust removing device of the second embodiment, portions corresponding to those of the waterway dust removing device 4 of the first embodiment are given the same drawing numbers and reference numerals as those of the first embodiment.
In the following, the “water channel waste removal device 4” may be abbreviated as the “garbage removal device 4” in some cases.

The waterway dust removing device 4 of the second embodiment is also used for the same purpose as the waterway dust removing device 4 of the first embodiment. The operation principle is also the same as that of the waterway dust removing device 4 of the first embodiment, but the structure is greatly different.
First, the rotator 5 has an endless track (caterpillar (trade name)) shape, and the refuse removal device 4 of the second embodiment has the greatest feature in this point.
Here, the endless track means that a plurality of filter plates having a screen 25 for trapping dust are relatively rotatably connected between adjacent filter plates via connection pins, and are rotatable around a pair of sprockets. Refers to something that is to be retained.
Next, the structure of the installation frame 6 is greatly different as the rotating body 5 has the above-described structure. However, there are basically no other differences.

(Overview of the overall structure and operation of the waterway waste removal system)
First, the overall structure of the waterway dust removing device 4 of the second embodiment and an overview of its operation will be described.
11a and 11b are perspective views showing the entire structure of the waterway dust removing device 4. FIG. FIG. 11B shows the screen 25 removed from the rotating body 5 of the water channel waste removing apparatus 4 of FIG. 11A for easy understanding of the entire structure of the apparatus.
As shown in FIGS. 11A and 11B, the waterway dust removing device 4 is installed so as to surround the water intake 13 and includes a plurality of filter plates 28 (the bladed filter plates 28 a, The bladeless filter plate 28b) is rotatably connected between adjacent filter plates via connecting pins, and is held rotatably around a pair of sprockets 26 (small sprocket 26a, large sprocket 26b). A rotating body 5 having an endless orbit shape, a plurality of blades 9 provided on the outer peripheral portion of the rotating body 5 at equal intervals in a circumferential direction, and rotating the rotating body 5 by receiving the force of the water flow 3; It comprises a frame, a rotatable body 5 rotatably held, and an installation frame 6 for installing this in the main waterway 1.

Here, the plurality of filter plates 28 constituting the rotating body 5 include two types of filter plates 28 a for blades and filter plates 28 b for no blades, and these types of different filter plates are alternately arranged. Adjacent filter plates are relatively rotatably connected via connection pins.
The rotating body 5 has a pair of sprockets 26 (small sprockets 26a and large sprockets 26b) and a pair of guide rails 37 (upper guide rails 37a) for guiding the connected body of the plurality of filter plates 28 as accessories. , Lower guide rail 37b).
The refuse removal device 4 is fixedly installed on the bottom of the main waterway 1 (see FIGS. 1A and 1B) and an installation frame 6 that forms an outer frame thereof. In this case, the dust removing device 4 is installed such that the rotating body 5 surrounds the water intake 13 in plan view.
The water intake 13 is disposed immediately below the rotating body 5 so as to face the inside of the rotating body 5 and the opening surface thereof is parallel to the bottom surface of the main waterway 1. The vortex preventing plate 15 is provided at the inlet of the water intake 13. The water guide box 8 is entirely flat and straight unlike the water guide box 8 of the refuse removal device 4 of the first embodiment.

Since the waterway dust removing device 4 of the second embodiment is configured as described above, the device operates as follows.
Now, a plurality of blades 9 provided at equal intervals in the circumferential direction on the outer peripheral portion of the rotating body 5 receive the force of the water flow 3, and the endless-shaped rotating body 5 rotates around a pair of sprockets 26. Then, the screen 25 and the plurality of blades 9 (especially the blades 9 pushed by the water flow 3 to rotate the rotating body 5) trap large debris such as grass, tree branches and leaves, and small debris. These trapped debris are carried to the downstream side of the main water channel 1 by the rotation of the rotating body 5, and are caused by a part of the flowing water flowing inside the rotating body 5 and the flowing water flowing outside the rotating body 5 to form the screen 25 and the blades. 9, is separated and discharged to the downstream of the main waterway 1 together with flowing water.
At the same time, the remaining running water flowing inside the rotating body 5 is directed toward the water intake 13, is sucked therein, is taken into the water guide box 8, is guided to the water guide box 8, and is guided to the water outlet 14. And flows into the branch waterway 2 (see FIGS. 1A and 1B).
The running water flowing inside the rotating body 5 is the running water that has passed through the screen 25 and flowed into the inside of the rotating body 5, and all of the dust has been removed and the running water is clean.
This operation is exactly the same as that of the waterway dust removing device 4 of the first embodiment.
Hereinafter, the rotating body 5, the blades 9, and the installation frame 6, which are the constituent elements of the waterway dust removing device 4 of the second embodiment, will be described in detail.

(Installation frame)
First, the installation frame 6 will be described.
FIG. 20 is a perspective view showing the entire structure of the installation frame 6. However, a pair of sprockets 26 (small sprocket 26a, large sprocket 26b) and a pair of guide rails 37 (upper guide rail 37a, lower guide rail 37b) are shown.
The installation frame 6 of the second embodiment is different from the installation frame 6 of the first embodiment in that the bottom frame 7 is not provided.
Also, the overall structure is different in that it has the shape of a cubic frame structure that is long in the horizontal direction. The upper and lower frame portions 42 and 43 each having a rectangular shape are connected and assembled by four vertical frame pieces 40. I have.
However, in this case, both ends of one long side (the long side on the near side in FIG. 20) of each of the upper and lower frame portions 42 and 43 are slightly extended from both corners to both sides, respectively. The ends are vertically connected by two vertical frame pieces 40, respectively.
Also, the four vertical frame pieces 40 extend slightly below the lower frame portion 43 so that sufficient space remains for installing the water guide box 8 having the water intake 13 below the lower frame portion 43. Have been.

A plurality of vertical and horizontal long and short frame pieces forming a lattice are bridged in each inner space of the upper and lower frame portions 42 and 43 of the installation frame 6, and the frame pieces corresponding to the upper and lower portions thereof are arranged. The rotating shafts (small sprocket shaft 27a and large sprocket shaft 27b) of the small sprocket 26a and the large sprocket 26b are supported between them, and these sprockets are rotatably held. In this case, the small sprocket 26a is arranged and held on the upstream side of the main waterway 1, and the large sprocket 26b is arranged and held on the downstream side of the main waterway 1 so as to sandwich the water intake 13 (see FIGS. 11a and 11b). .
A plurality of filter plates 28 (filter plates 28a with blades, filter blades without blades) constituting the rotating body 5 are provided on the inner side surfaces of the upper and lower frame portions 42 and 43 (surfaces facing the internal space of the installation frame 6). Guide rails 37 (upper guide rails 37a and lower guide rails 37b) for guiding the rotation of the filter plate 28b) are fixedly mounted.
The cross section of the guide rail 37 is U-shaped, and the upper guide rail 37a is attached with its opening facing downward, and the lower guide rail 37b is attached with its opening facing upward.

(Rotating body)
Next, the rotating body 5 will be described with reference to FIGS. 11A, 11B and 12. FIG.
FIG. 12 is a diagram illustrating a connection structure of the plurality of filter plates 28 of the rotating body 5 when a part of the back surface of the rotating body 5 is viewed obliquely from the upper left. However, the screen 25 is not shown in FIGS. 11B and 12.
As described above, the rotating body 5 is configured such that the filtering plates 28a for blades and the filtering plates 28b for bladeless are alternately arranged, and the rotatable members 5 are relatively rotatably connected between the adjacent filtering plates via connecting pins. The sprocket 26 (small sprocket 26a, large sprocket 26b) is configured to be rotatably held around the endless orbit.
Here, the filtering plate 28a with blades includes a screen 25 for trapping dust, a blade mounting bracket 16 for mounting the blades 9 receiving the force of the water flow 3, and a guide rail 37 (upper guide rail 37a, lower guide rail 37b). ) And a caster 35 that moves in the guide groove (see FIG. 13 for details).
On the other hand, the blade-less filter plate 28b includes only the screen 25 and does not include the blade mounting bracket 16 and the casters 35.

(Connected structure of filter plate)
Here, the connection structure of the plurality of filter plates 28 (filter plate 28a with blades, filter plate 28b without blades) of the rotating body 5 will be described with reference to FIGS.
FIG. 13 is a diagram showing the frame body 29 of the filtering plate 28a with blades as viewed from the side.
FIG. 12 shows a state in which a filtering plate 28 a for blades is disposed at the center, and a filtering plate 28 b for blades is disposed on the left and right sides thereof, and these are relatively rotatably connected via connecting pins 33. ing.
In addition, the blade 9, the blade mounting bracket 16, the rib 19 for reinforcing the blade 9 and the blade 9 are rotatable on the filter plate 28a through three openings for mounting the screen 25 of the filter plate 28a with blades at the center. The pins 22 and the like to be attached to are visible.

The filter plate 28 (the filter plate 28a with blades and the filter plate 28b without blades) has an elongated rectangular external shape in plan view. Four pairs of connecting fittings 32 (see FIG. 13 for details) for connecting the two 28 are provided at equal intervals in the length direction so as to protrude from both sides. Then, by inserting the connection pin 33 into a hole formed in the connection fitting 32, the adjacent filter plates 28 (the filter plates 28a and 28b) are connected to each other so as to be relatively rotatable. FIG. 13 shows a state where the connection pin 33 is inserted into one of the connection fittings 32 provided on the right side in the drawing of the frame body 29 of the filter plate 28a.
In this case, the filter plate 28a faces outward as viewed from the endless track of the rotating body 5 with the surface drawn as a flat upper surface in FIG. 13, and the filter plate 28b also has a flat upper surface. Are connected to each other with the surface drawn as viewed outward from the endless track of the rotating body 5. Although a side view of the frame body 29 of the filter plate 28b is not particularly shown, the one in which the blade mounting bracket 16 and the casters 35 are deleted in FIG. 13 corresponds to this.

In addition, on the plate surface along the left and right side edges of the filter plate 28 (the filter plate 28 a for blades and the filter plate 28 b for bladeless), a thin and long cover plate 34 ( For details, see FIG. 13), thereby covering the gap (connecting portion) between adjacent filter plates 28 so that dust and the like do not get caught in the connecting portion.
Hereinafter, the structure of the filter plate 28 will be described in more detail.

(Structure of filter plate)
As described above, there are two types of the filter plate 28, the filter plate 28a with a blade and the filter plate 28b for a bladeless. The filter plate 28b for a bladeless is provided with the blade mounting bracket 16 for mounting the blade 9 and the caster. Since the basic structure is the same as that of the bladed filter plate 28a except that the filter plate 35 is not provided, the structure of the bladed filter plate 28a will be mainly described below.
FIG. 14 shows the back surface (the lower surface in FIG. 13) of the frame body 29 of the filtering plate 28a with vanes viewed obliquely from the upper left.
The filtering plate 28a for a blade is formed by attaching a screen 25 to a predetermined position (this "predetermined position" will be described later) on such a frame (frame) 29. Therefore, the structure of the frame 29 will be mainly described below.

(Structure of the frame of the filter plate)
As shown in FIG. 14, the frame body 29 of the filtering plate 28a with blades has an elongated rectangular lattice shape, and its outer shape is the same as that of the filtering plate 28a.
The frame body 29 is formed by bending four sides of a rectangular flat plate formed by punching three spaces (openings) 44a to 44c of the lattice into a shallow box shape by bending the four sides by 90 degrees, and forming the four raised side walls. It is manufactured by welding the four corners where the parts meet. As another method of manufacturing the frame body 29, there is a method of using an elongated L-shaped long and short angle material.
In such a frame body 29, a connection metal fitting 32 for connecting the filter plates 28 (the filter plate 28a with blades and the filter plate 28b without blades) to each other, and a cover plate 34 that covers the connection portion are provided. This has already been described in the description of the connection structure of the filter plate 28.

In addition to such a frame body 29, a screen 25 for trapping dust, a blade mounting bracket 16 for rotatably mounting the blade 9 to the filter plate 28a, a pair of sprockets 26 (small sprockets 26a, A bar 31 that fits into the teeth of the large sprocket 26b) and a pair of casters 35 that roll and run in grooves in a pair of guide rails 37 (upper guide rail 37a and lower guide rail 37b) are provided.
Hereinafter, the installation and mounting structure of these components will be described in detail step by step.

(screen)
First, the screen 25 will be described.
The screen 25 is attached to each of the three spaces 44a to 44c (corresponding to the "predetermined position") so as to cover these spaces. As the screen 25, a screen material as shown in FIG. 6 is used, but is not shown here.
FIG. 17 is referred to for how to attach the screen 25.
FIG. 17 shows the surface of the bladeless filter plate 28b (the outer surface when viewed from the endless orbit of the rotating body 5) as viewed obliquely from the upper left side. The screen 25 is attached to each of three corresponding space portions of the frame body 29, and a state where the bladeless filter plate 28b is completed is shown. The screen 25 is attached to the frame body 29 of the filtering plate 28a with blades in the same manner. These screens 25 are detachable from the frame 29.

(Blade mounting bracket)
Next, the blade mounting bracket 16 will be described.
The blade mounting bracket 16 is mounted by welding on the surface (the upper surface in FIG. 13) of the frame body 29 of the filtering plate 28a with blades. The surface of the frame body 29 is the surface of the frame body 29 that is outside when viewed from the endless track of the rotating body 5 and the surface that forms the outer peripheral portion of the frame body 29.
More specifically, in the process of manufacturing the frame body 29, the blade mounting bracket 16 bends four sides of a rectangular flat plate formed by punching out three spaces 44a to 44c of the lattice by 90 degrees to form a shallow box. Then, the surfaces of the four horizontal frame pieces (horizontal frame pieces) 45a to 45d (see FIGS. 14 and 15) remaining as a part of the bottom wall of the box (the upper surface in FIG. On the outer surface as viewed from the endless track), the rectangular frame 29 is fixed by welding so as to be aligned on a straight line along the longitudinal direction. Therefore, four blade mounting brackets 16 are provided on the surface of the frame body 29 at intervals.

(Sprocket fitting rod)
Next, the rod 31 fitted to the teeth of the pair of sprockets 26 will be described.
The rod 31 is attached to the frame 29 as follows.
That is, on the back surface (the lower surface in FIG. 13, the inner surface when viewed from the endless track of the rotating body 5) of the horizontal frame pieces (horizontal frame pieces) 45b and 45c, a flat plate or an L-shaped angle material is used. The ribs 30 are mounted on the horizontal frame pieces at right angles to each other and fixed by welding. The rods 31 are inserted into small holes (not shown) formed in the pair of ribs 30, respectively. The rod 31 is fixed by welding through both ends, and the bar 31 is held by the pair of ribs 30. Thus, the rod 31 is attached to the frame 29.
These ribs 30 also play a role in improving the strength of the frame 29 of the filter plate 28a.

(caster)
Finally, the casters 35 will be described.
The casters 35 are attached to both side walls facing away from each other in the longitudinal direction of the frame body 29 from the outside of the frame body 29.
In the process of manufacturing the frame body 29, four sides around a rectangular flat plate formed by punching out three spaces 44a to 44c of the lattice are bent at 90 degrees on both side walls facing away from each other in the longitudinal direction of the frame body 29. When it is formed into a shallow box shape, it corresponds to the shorter two opposite walls among the four surrounding walls of the box.

(Structure of filter plate for bladeless)
As described above, the structure of the filter plate 28 has been mainly described with respect to the structure of the bladed filter plate 28a. However, the structure of the bladeless filter plate 28b will also be briefly described here.
FIG. 16 is a diagram showing the back surface of the frame body 29 of the bladeless filter plate 28b as viewed obliquely from the upper left, and a diagram showing the back surface of the frame body 29 of the bladed filter plate 28a as viewed from the same viewpoint. 14.
The bladeless filter plate 28b does not include the blade mounting bracket 16 for mounting the blade 9 and the casters 35, as described above. Therefore, the frame body 29 does not have these as shown in FIG.
The reason why the frame body 29 of the blade-less filter plate 28b does not include the casters 35 is that the blade 9 is not attached to the filter plate 28b, so that the filter plate 28b is pulled by the water flow 3 to the frame body 29. This is because, since no external force acts, it is not necessary to guide the rotation traveling by the pair of guide rails 37 (the upper guide rail 37a and the lower guide rail 37b).

It should be noted that, first of all, the relationship between FIG. 16 and FIG. 17 is added. In FIG. 16, the screens 25 attached to the three spaces (openings) 44 a to 44 c of the frame body 29 are turned upside down. FIG. 17 shows the frame 29 viewed from the same viewpoint.

(Feather)
The installation frame 6 and the rotation body 5 among the rotation body 5, the blades 9, and the installation frame 6, which are the components of the waterway dust removal device 4, have all been described above. Here, the blade 9 as the remaining one component will be described.
The plurality of blades 9 are provided on the outer peripheral portion of the rotating body 5 at equal intervals in the circumferential direction, and act to rotate the rotating body 5 by receiving the force of the water flow 3.
Actually, these blades 9 are attached one by one to the outer peripheral portion of each of the plurality of filter plates with blades 28a. Then, as described above, the rotating body 5 is configured such that the filtering plates 28a for blades and the filtering plates 28b for bladeless are alternately arranged, and the rotatable members 5 are rotatably connected between the adjacent filtering plates via the connecting pins. The plurality of filter plates with blades 28 a correspond to every other filter plate among the plurality of filter plates 28 constituting the rotating body 5. The blades 9 are provided on the outer peripheral portion of the rotating body 5 at equal intervals in the circumferential direction.
The detailed structure of the blade 9 is basically not different from the blade 9 in the waterway dust removing device 4 of the first embodiment. However, the ribs 9 provided in the blade 9 of the first embodiment are provided with three ribs 19, whereas the ribs 9 provided in the second embodiment are provided with four ribs (FIG. 4, FIG. See FIG. 15). These ribs 19 are used for the purpose of reinforcing the blade 9, attaching the blade 9 to the filtering plate 28 a with a blade, and also serving as a stopper for stopping the inverted rotation of the blade 9.

(Wing mounting structure)
Here, a structure for attaching the blade 9 to the filtering plate 28a with a blade will be described.
FIG. 15 is a perspective view showing the filtering plate 28 a with blades in a state where the blades 9 are attached to the frame body 29. However, the screen 25 has been removed.
The blade 9 is provided on a surface of a frame 29 of the filter plate 28a (an upper surface in FIG. 13, an outer surface when viewed from the endless track of the rotating body 5) with a pin hole 21 (see FIG. 4) and a pin hole 46 (see FIG. 13) provided in the blade mounting bracket 16 so as to be rotatable with respect to the frame body 29, in other words, to be able to rotate freely with respect to the frame body 29. It is attached.
The mounting direction is a direction parallel to a pair of sprocket shafts 27 (small sprocket shaft 27a, large sprocket shaft 27b) forming both rotation axes of the pair of sprockets 26 (small sprocket 26a, large sprocket 26b) (FIG. 18, FIG. 18). See FIG. 19).
In FIG. 15, the rod 31 fitted to the teeth of the sprocket 26 passes through the central space 44b of the three spaces 44a to 44c surrounded by the lattice of the frame 29 of the filter plate 28a. I can see.

(Structure of the accessory part of the rotating body)
Next, the structure of a portion centering on the sprocket 26 (small sprocket 26a, large sprocket 26b) as an accessory part of the rotating body 5, and a portion centering on the guide rail 37 (upper guide rail 37a, lower guide rail 37b) Will be described in detail.

(Structure of sprocket)
First, the structure of a portion centered on the sprocket 26 will be described.
FIG. 19 is a perspective view of the sprocket portion, and shows a state in which the rod 31 provided on the filtering plate 28a with blades is fitted to the teeth of the sprocket 26 (small sprocket 26a, large sprocket 26b). . This fitting relationship is the same for the rod 31 provided on the bladeless filter plate 28b.
A sprocket 26 composed of two sprocket element plates interconnected by a spacing bar 36 is fixed to a sprocket shaft 27, and each tooth of these two sprocket element plates is provided with a filter plate 28 (for attaching a blade). The rods 31 provided on the frame body 29 of the filter plate 28a and the bladeless filter plate 28b) are fitted, and these are meshed. Then, in this state, the filter plate 28 rotates together with the sprocket 26 and changes direction.
In this manner, the rotating body 5 constituted by the plurality of filter plates 28 is rotated by a pair of sprockets 26 (small sprockets 26a and large sprockets 26b) in an elliptical orbit.

(Structure of guide rail)
Next, the structure of a portion centered on the guide rail 37 will be described.
The mounting structure of the pair of guide rails 37 (upper guide rail 37a, lower guide rail 37b) has already been described in detail in the installation frame 6 with reference to FIG.
FIG. 20 also shows that a rod 31 provided on the frame 29 of the filter plate 28a with blades is fitted on the teeth of the sprocket 26 and fitted on the teeth of the small sprocket 26a. The upper and lower casters 35 provided on the upper guide rail 37a are fitted in the downward grooves of the upper guide rail 37a and the upward grooves of the lower guide rail 37b, respectively. Have been.
As described above, the blade-less filter plate 28b does not include the upper and lower casters 35 in the frame 29 thereof, so that the guide rail 37 does not restrict the rotation trajectory. Since the plate 28a assists its rotational traveling, there is no risk that the vaneless filter plate 28b will be deviated from its rotational orbit.
Therefore, the rotating body 5 composed of the plurality of filter plates 28 is held in an oval shape by the pair of sprockets 26 (small sprocket 26a and large sprocket 26b), and the pair of guide rails 37 (upper guide). While being guided on the track by the rail 37a and the lower guide rail 37b), it rotates on the endless track.

(Behavior of running water, dust removal action)
Finally, the behavior of flowing water inside and outside the waterway dust removing device 4 and the dust removing action will be described.
FIG. 18 shows the dirt removing device 4 for a waterway viewed from directly above, and the blades 9 attached to a plurality of filtering plates 28 a with blades among a plurality of filtering plates 28 constituting the rotating body 5. Shows a state in which the angle is displaced by the water flow 3.
The blade 9 is rotated by the force of the flowing water 3 flowing from the left side in the figure, and the stopper portion 20 provided on the rib 19 hits the surface of the frame 29 of the filter plate 28a to stop the rotation. Is temporarily fixed at a position perpendicular to the plane (see also FIGS. 5 and 15). Then, further receiving the force of the water flow 3, the rotating body 5 is rotated clockwise in FIG.
Also, when the blade 9 moves toward the upstream of the water flow 3 due to the rotation of the rotating body 5, the blade 9 rotates counterclockwise in FIG. It is displaced to the angle with the least resistance.

As described above, while the blade 9 is rotating the rotating body 5 of the refuse removing device 4 under the force of the water stream 3, the flowing water flowing from the left side in the drawing collides with the rotating body 5. Then, the light passes through the screens 25 stretched over the plurality of filter plates 28 forming the body of the rotating body 5 and flows into the rotating body 5. At this time, the refuse flowing along with the running water is trapped by the screen 25 and the blade 9.
Then, a part of the running water flowing into the rotating body 5 passes through the inside of the rotating body 5 as it is and flows out downstream of the water flow 3. The remaining flowing water flows into a water intake 13 opened at a lower portion inside the rotating body 5, is taken into the water guide box 8, guided by the water guide box 8, and flows into the branch waterway 2 through the water outlet 14.

At this time, in the portion of the screen 25 that is located on the downstream side of the water flow 3 of the screen 25 that is stretched over substantially the entire region of the body of the rotating body 5, the part of the flowing water flows from the inside of the screen 25 to the outside. At the time of the outflow, the screen 25 and the blades 9 are backwashed, and the debris trapped in them are separated, separated and discharged to the downstream of the main waterway 1 together with running water.
In addition, flowing water flowing outside the rotating body 5 also separates debris trapped by the blades 9 from the blades 9 and flows out to the downstream of the main waterway 1 together with the flowing water.
There is no difference between the behavior of the flowing water and the dust removal action from the waterway dust removal device 4 of the first embodiment.

(Effect of Embodiment 2)
As is clear from the above description, the dirt removing device 4 for a water channel of the second embodiment is different from that of the first embodiment only in that the rotating body 5 has the shape of an endless track. Basically, there is no difference from the waterway dust removing device 4.
That is, the blades 9 attached to the plurality of filtering plates with blades 28a are provided on the outer peripheral portion of the rotating body 5 at equal intervals in the circumferential direction, and receive the force of the water flow 3 to rotate the rotating body 5. The rotation is not different from the blade 9 of the waterway dust removing device 4 of the first embodiment.
In addition, while the rotating body 5 rotates, the running water in the main waterway 1 is transmitted through the screen 25 provided in the rotating body 5 and is taken into the inside thereof, and the refuse flowing from the upstream of the main waterway 1 is screened by the screen 25 and the blades. 9, carry it downstream, backwash the screen 25 and the blades 9 with a part of the running water taken in, separate the refuse from them, separate them, and remove them together with the running water downstream of the main waterway 1. And the function of causing the refuse trapped by the blades 9 and carried downstream by the flowing water flowing outside the rotating body 5 to separate the refuse from the blades 9 and flow out to the downstream of the main waterway 1 together with the flowing water. It is not different from the rotating body 5 of the waterway dust removing device 4 of the first embodiment in that the remaining portion of the flowing water taken into the inside is guided to the branch waterway 2.
Therefore, the waterway dust removing device 4 of the second embodiment has the same effect as the waterway dust removing device 4 of the first embodiment.

Further, in the water channel waste removing apparatus 4 of the second embodiment, the rotating body 5 has an endless track shape, and thus has the following unique effects.
The rotating body 5 is connected to a plurality of filter plates 28 having a screen 25 for trapping dust, and is held rotatably around a pair of sprockets 26 (small sprockets 26a and large sprockets 26b). Since it has a shape, by providing a large number of filter plates 28, it is possible to increase the filtration area of the entire rotating body, and to secure the amount of water flowing into the intake port 13 while keeping the amount of water flowing through the screen 25. Can be trapped, and smaller refuse can be trapped.

In addition, since the installation shape of the rotating body 5 is made oblong when viewed from above, the position of the water intake 13 can be arranged on the upstream side of the center of the rotating body 5, and the flow of the flowing water flowing into the water intake 13 can be reduced. The influence of the water flowing through the rotating body 5 and flowing downstream can be reduced, and the backwashing effect of the screen 25 of the filter plate 28 and the blades 9 downstream of the rotating body 5 can be enhanced. .

The invention of the present application is not limited to the embodiments described above, and various modifications can be made without departing from the gist of the invention.
For example, in the waterway dust removing device 4 of the first embodiment, the rotating body 5 has a polygonal prismatic cage shape, but is not limited thereto, and may have a cylindrical cage shape.
In addition, the installation frame 6 of the waterway waste removing apparatus 4 of the second embodiment does not include the bottom plate 7 attached to the corresponding installation frame 6 of the first embodiment. good.
In addition, in the waterway dust removing device 4 of the first and second embodiments, the water intake 13 is installed in parallel with the bottom surface of the main waterway 1. It may be installed vertically.

DESCRIPTION OF SYMBOLS 1 ... Main waterway, 2 ... Branch waterway, 3 ... Water flow, 4 ... Waterway dust removal apparatus, 5 ... Rotating body, 6 ... Installation frame, 6 '... Frame skeleton, 7 ... Bottom plate, 8 ... Water conduction box, 9 ... blades, 10 ... center shaft, 11 ... upper bearing, 12 ... lower bearing, 13 ... water intake, 14 ... water outlet, 15 ... vortex prevention plate, 16 ... blade mounting bracket, 17 ... inner shield plate, 18 ... outer shield Plate, 19 rib, 20 stopper part, 21 pin hole, 22 pin, 23 opening, 25 screen, 25a screen material (bar screen), 25b screen material (mesh screen), 26 sprocket, 26a: Small sprocket, 26b: Large sprocket, 27: Sprocket shaft, 27a: Small sprocket shaft, 27b: Large sprocket shaft, 28: Filter plate, 28a: Filter plate with blade, 28b: No blade Filter plate, 29: Filter plate frame, 30: Rib, 31: Sprocket fitting rod, 32: Connection fitting, 33: Connection pin, 34: Cover plate, 35: Caster, 36: Spacing rod 37, a guide rail, 37a, an upper guide rail, 37b, a lower guide rail, 38, an upper frame portion, 39, a lower frame portion, 40, a vertical frame piece, 41, a surface frame, 42, an upper frame portion, 43, a lower portion. Frame portions, 44a to 44c: space portions (opening portions), 45a to 45d: horizontal frame pieces (horizontal frame pieces), 46: pin holes, 47a, 47b: body support means, A, B: partial enlarged views.

Claims (9)

1. In a waterway garbage removal device that is installed at a water intake that takes in running water flowing through the main waterway in a branch waterway branched from an open waterway-like main waterway such as an agricultural waterway, and removes debris from the running water taken into the branch waterway. So,
   The waterway waste removal device,
   A screen for trapping dust is provided around substantially the entire area of the rotating cylindrical body portion, which is installed so as to surround the water intake port, and is held rotatably about its rotation axis, a polygonal prism or A rotating body shaped like a cylindrical cage,
   An outer peripheral portion of the body portion of the rotating body, provided at equal intervals in the circumferential direction, to rotate the rotating body by receiving the force of water flow, comprising a plurality of vanes that can rotate itself in an inverted manner,
   The plurality of blades are provided on an outer peripheral portion of the body portion of the rotating body, in parallel with the rotation axis, respectively, rotatably provided, and each includes a rib also serving as a stopper for stopping the rotation,
   When the blade rotates with the rotating body toward the downstream of the water flow, the stopper is rotated by the water flow until the stopper hits the outer periphery of the body of the rotating body, and is fixed at that position. Receiving a water flow to generate a rotating force of the rotating body,
   When the blade rotates with the rotating body toward the upstream of the water flow, the blade rotates in the opposite direction due to the resistance of the water flow, and is automatically displaced to an angle with the least resistance to the water flow,
   The refuse flowing from the upstream of the main waterway and trapped in the screen and the blades is carried to the downstream side of the main waterway by the rotation of the rotating body, and a part of the dust flowing inside the rotating body. A trash removal device for a water channel, wherein the device is separated and separated by flowing water and flowing water flowing outside the rotating body, and is discharged downstream of the main water channel together with the flowing water.
2. The wastewater removal device for a waterway according to claim 1, wherein the water intake is installed in parallel with a bottom surface of the main waterway.
3. 3. The waterway waste according to claim 1, wherein a vortex preventing plate is provided at an inlet of the water intake to prevent a vortex generated when flowing water in the main waterway is sucked into the water intake. 4. Removal device.
4. 4. The trash removal device for a waterway according to any one of claims 1 to 3, wherein the screen has a detachable structure and is replaceable according to the type and shape of the trash flowing through the main waterway.
5. In a waterway garbage removal device that is installed at a water intake that takes in running water flowing through the main waterway in a branch waterway branched from an open waterway-like main waterway such as an agricultural waterway, and removes debris from running water taken into the branch waterway. So,
   The waterway waste removal device,
   A plurality of filter plates provided with a screen for trapping dirt, which are installed so as to surround the water intake, are relatively rotatably connected between adjacent filter plates via connection pins, and are rotatable around a pair of sprockets. A rotating body in the shape of an endless track,
   On the outer periphery of the rotating body, provided with a plurality of blades provided at equal intervals in the circumferential direction and receiving the force of water flow to rotate the rotating body,
   The refuse flowing from the upstream of the main waterway and trapped in the screen and the blades is carried to the downstream side of the main waterway by the rotation of the rotating body, and a part of the dust flowing inside the rotating body. A trash removal device for a water channel, wherein the device is separated and separated by flowing water and flowing water flowing outside the rotating body, and is discharged downstream of the main water channel together with the flowing water.
6. Each of the plurality of filter plates constituting the rotating body includes an elongated grid-like frame, and the screen is provided in a space surrounded by a grid inside the frame,
   The plurality of blades are rotatably provided on an outer peripheral portion of the frame of every other one of the plurality of filter plates in parallel with both rotation shafts of the pair of sprockets. With ribs that also serve as stoppers to stop the rotation,
   When the blade rotates with the rotating body toward the downstream of the water flow, the stopper is rotated by the water flow until the stopper hits the outer peripheral portion of the frame of the filter plate, and is fixed at that position. Receiving a water flow to generate a rotating force of the rotating body,
   When the blade rotates with the rotating body toward the upstream of the water flow, the blade rotates in the opposite direction due to the resistance of the water flow, and is automatically displaced to an angle with the least resistance to the water flow. The wastewater removal device for a waterway according to claim 5.
7. 7. The water channel waste removing apparatus according to claim 5, wherein the water intake port is installed in parallel with a bottom surface of the main water channel.
8. The trash removal for a waterway according to any one of claims 5 to 7, wherein a vortex prevention plate for preventing vortices generated when flowing water is sucked into the water intake is provided at an inlet of the water intake. apparatus.
9. 9. The water channel waste removing apparatus according to claim 5, wherein the screen is configured to be detachable and replaceable according to the type and shape of the waste flowing through the main water channel.
   
   
   
   
   
   
   
   
   
   
   
   
   
   

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