JPH06158630A - Dust removing device - Google Patents

Abstract

PURPOSE:To allot a portion of a dust removing work to each of a plurality of gates for simplifying the dust removing work. CONSTITUTION:A bypass water channel bypassing a gate 5 is provided beside the gate 5 installed in a water channel 1, and a shielding plate 8 forming a vertical part 8a extending from under the water above a water face and a water leading part 8b which is connected to the lower end of the vertical part 8a and bent toward an upstream side is provided on the upstream side of the gate 5 so as to obliquely cross the water channel 1 with the one end of the shielding plate 8 arranged at the flow-in port of the bypass water channel 7 and its other end arranged on the opposite bank on the upstream side. The shielding plate 8 exposes a part of the vertical part 8a in the air, and the depth of the submerged part of the shielding plate 8 is set up to be less than a half of the depth of water. The shielding plate 8 only leads dirt to the bypass water channel 7, and the dirt exceeding a fixed quantity flows downstream, and dust removing work can be uniformly carried out at each gate. In addition, since a float 10 is stuck to the downstream side of the shielding plate 8 to form a vertically movable guide, the shielding plate 8 can ascend and descend surely according to the fluctuation of water level to catch the flowing clown dirt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dustproof device for protecting a water supply pump and a gate from floating dust.

[0002]

2. Description of the Related Art Most of the dust that pollutes rivers is washed away in a floating state. Therefore, when protecting a pump installed in a waterway from a river or a gate installed in a waterway from dust, dust in a floating state is mainly targeted, and conventionally, as a device for such a purpose, as shown in FIG. 11 and FIG. As shown in the figure, a device commonly called a net field is used in which a rope 4 having a large number of floating bodies 2 attached and a net 3 hanging in water is provided in a water channel 1 so as to float on the water surface and cross the water flow. Was there. A gate 5 is provided on the downstream side of the net, and in this gate 5, the water flow flows below the gate 5, so that the upstream water surface is interrupted from the downstream water surface. Floating dust flowing in the river is caught in the net, so that less dust reaches the gate 5.

[0003]

By the way, in the above dustproof device, the dust is captured by the net 3, but if left as it is, the dust is accumulated and the water channel 1 becomes narrow, which affects the communication of running water. Come on. Therefore, it is necessary to remove dust in order to communicate the running water. However, a plurality of gates 5 are installed in the waterway 1, and each gate 5 performs dust removal work when a large amount of dust is accumulated, so the order of dust removal locations is changed by mischief, and efficient dust removal is intensively performed. There was a problem that I could not work. Also,
In the case of a water pump facility that takes water from a river, there was a socially unfair problem in that one water pump station had to bear the cost of removing dust that had flowed out of all river basins. .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dustproof device in which dust removal work can be shared among a plurality of gates and the dust removal work can be simplified.

[0005]

In order to solve the above-mentioned problems of the prior art, in the present invention, a bypass waterway bypassing the gate is provided on the side of the gate provided on the waterway, and the upstream side of the gate is provided. In, a shield plate formed a vertical portion extending from the water above the water surface and a water guide portion that is bent toward the upstream side connected to the lower end of the vertical portion, one end of the shield plate at the inlet of the bypass water channel. Arranged, the other end is disposed on the opposite bank on the upstream side and provided diagonally across the water channel, the shielding plate,
Part of the vertical portion is exposed in the air, and the depth of the submerged portion of the shielding plate is set to be half the water depth or less.

Further, a shielding plate consisting of a vertical portion and a water guiding portion is arranged at the intake on the side bank of the river, a float is fixed to the shore side of the vertical portion, and wheels are provided at both ends of the shielding plate. Further, rails for sliding the wheels are vertically provided on a side wall of the water intake.

Further, in the structure described at the beginning, wheels are provided at both ends of the shield plate, a float is fixed to the downstream side surface of the vertical portion, and rails for sliding the wheels vertically are provided on both side walls of the water channel. At the inlet of the bypass water channel, located on the downstream extension of the shielding plate, a movable weir is continuously provided with the shielding plate, and a partition watertight with the movable weir is erected at the bottom of the water. Characterize.

[0008]

The present invention is configured as described above,
The shielding plate is not permeable, but since the submerged portion is less than about half of the water depth, it does not hinder the passage of running water. Also,
Since the target dust is flowing, most dust has a strong floating property. Therefore, the submerged depth of the shielding plate is shallow, but it is sufficient for the purpose of dust protection of the gate. Further, since the water guiding portion below the shielding plate is bent toward the upstream side at an appropriate angle, the flowing water hitting the water guiding portion becomes an ascending flow of appropriate strength. When the upflow reaches near the water surface, a water flow occurs in the direction away from the shield plate. Therefore, the dust that flows at such a depth that it collides with the headrace is
It does not swirl toward the surface of the water and dust is not strongly pressed against the shield. From a broad perspective, the water flow trying to leave the shield plate and the water flow approaching from the upstream side collide and merge, the water flow flows along the shield plate, and the dust flows while floating along the shield plate. To do. Therefore, the dust can be guided to the bypass channel provided on the side of the gate by the obliquely provided shielding plate in the channel.

In the vicinity of the side surface of the shield plate installed along the side bank of the river, a combined water flow of the water flow toward the intake and the water flow of the river flows. Therefore, the dust particles flow down along the shielding plate while floating. Since the shield plate to which the wheels are attached can slide vertically along the rails, when the water level fluctuates, the shield plate can rise in the same posture as the float rises. Therefore, the suspended dust is prevented from flowing down along the shielding plate without being influenced by the water level, and taking dust into the water inlet.

Leakage from below the movable weir provided in the bypass waterway is prevented by the partition wall, and the movable weir moves up and down together with the shield plate in accordance with the fluctuation of the water level upstream of the gate. By making the height lower than the height of the vertical portion of the shielding plate, a part of the dust collected by the shielding plate can flow over the movable weir and through the bypass channel.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below with reference to the accompanying drawings. First, since there are many places where the upstream water level hardly changes, the case where the dustproof device is installed in such a place will be described. As shown in FIG. 2, the dustproof device 6 installed on the gate 5 which is installed in the waterway 1 and discharges water from below is a bypass waterway 7 provided on the side of the gate 5 and a waterway obliquely from the inlet of the bypass waterway 7 to the upstream side. 1 and a shielding plate 8 that traverses 1.

As shown in FIG. 4, in the bypass water channel 7, a fixed weir 9 is erected at the bottom of the water, and when a large amount of dust is accumulated above a certain level, a part of it collapses and causes an overflow. The weir height is designed to maintain the overflow water depth. Therefore, the flow rate of the bypass water channel 7 is only a few hundredth of the flow rate of the water channel 1, and the purpose of the weiring by the gate 5 is not hindered.

The shield plate 8 is composed of a smooth plate, and has a vertical portion 8a and a water guiding portion 8b bent from the lower end of the vertical portion 8a to the upstream side.
It consists of The downstream end of the shield plate 8 is fixed to the side wall of the downstream end edge of the inflow port of the bypass water channel 7, and the upstream end of the shield plate 8 is fixed to the side wall of the water channel 1. As shown in FIG. 3, the fixing condition at this time is such that a part of the vertical portion 8a is exposed in the air and the submerged depth of the shielding plate 8 is about half the water depth or less. Therefore, the shielding plate 8 has no permeability but does not hinder the communication of running water.

Considering only the shield plate 8, when the upstream water level fluctuates, the float 10 is attached to the downstream side surface of the vertical portion 8a of the shield plate 8 as shown in FIG.

Next, the operation will be described. In the upper layer of the water flow, a vortex is formed in front of the shield plate 8 as shown in FIG.
The dust having a weak floating force collides with the water guiding portion 8b and moves to the water surface by the ascending flow, but thereafter, the shielding plate 8 is moved by the water flow away from the vertical portion 8a.
Get away from. It should be noted that dust that sinks in water is difficult to flow, so it will be omitted from the description.

Since the water flow that is going to leave the vertical portion 8a collides with the water flow that flows from the upstream side, at a position that is a little away from the vertical portion 8a, the water flow will flow downstream along the shield plate 8, or , Descending due to eddy currents, and again water conduit 8
The water flow rises due to b. Therefore, the dust is carried along with the vortex and is caused to flow downstream and flow along the shield plate 8. In this way, even in dust with a weak buoyancy, since it has the water guiding portion 8b, it is prevented from being drawn into the water stream, passing under the shield plate 8, and flowing down toward the gate 5.

Further, as described above, the dust is slightly separated from the shield plate 8, and even if the dust is in contact with the shield plate 8, the shield plate 8 is a smooth plate. Along the downstream.

The dust that has flowed along the shielding plate 8 naturally enters the bypass channel 7 and is caught by the fixed weir 9 and accumulated. When the dust is excessively accumulated, a part of the dust rides on the water flow and is carried to the water channel 1 downstream of the gate 5. Therefore, at each gate 5, a certain amount of dust is collected in the bypass waterway 7
Since it is removed inside, it is easy, and the burden of dust removal work on each gate 5 is made uniform. The fixed weir 9 that corresponds to the water level fluctuation will be described later.

Next, a case where a water pump facility is installed in a river to take water will be described. As shown in FIG. 6, the water pump facility 12 provided on the side bank of the river 11 is provided with a water absorption tank 13 of the water pump facility 12 close to the river 11, and the side surface of the water absorption tank 13 communicates with the river 11. Intake 14
Is provided. Therefore, since the water is taken in from the water intake port 14, the shielding plate 8 is provided here.

A pair of rails 15 are vertically fixed to the opposite side walls of the water intake 14, and a pair of wheels 16 fitted to the respective rails 15 are connected to a connecting member 17.
And each connecting member 17 is fixed to the upstream end and the downstream end of the shielding plate 8. Specifically, the float 10 is fixed to the back side of the vertical portion 8a, and both ends of the vertical portion 8a and the float 10 are in contact with both side walls. The vertical portion 8a of the shielding plate 8 is continuous with the side bank of the river 11,
Since the water guiding part 8b is bent toward the central part of the river, it is separated from the side bank, and the upstream side of the shielding plate 8 is a gap where dust enters, so the corner plate 8c is connected to the water guiding part 8b to form a gap. Covers. Note that the upstream side wall may be extended and brought into contact with the water guiding portion 8b without using the corner plate 8c.

Next, the operation will be described. A part of the water flow that has flowed in parallel to the river 11 from the upstream is the shield plate 8
Since it dives under the water and is taken up by the water absorption tank 13, the shielding plate 8
In the vicinity of, the water flow is diagonal to the shielding plate 8,
This is the same as installing the shielding plate 8 diagonally across the water flow to be taken. Therefore, the dust flows down along the shielding plate 8 and the upstream end of the intake port 14 closes the gap by the corner plate 8c, so that the dust flows through the river 11 without entering the water absorption tank 13.

Next, when the water level changes, the float 10
The buoyancy acting on the shield 15 increases and decreases, and the shielding plate 8 moves up and down smoothly along the rail 15. Therefore, the dust in the upper layer of the water flow can be made to flow downstream. Further, since the wheel 16 is located above the water surface, the fitted state with the rail 15 is maintained and the wheel 1
The resistance of No. 6 is reduced, and the dust that has entered the water absorption tank 13 never touches the wheel 16. If the surface of the water intake port 14 is oblique, the rail 15 is also installed obliquely in parallel. Since the shield plate 8 is fixed to the connecting member 17 and its directionality is regulated by the pair of wheels 16, it does not tilt.

Next, a description will be given of the shield plate 8 provided in the water channel provided with the function corresponding to the fluctuation of the water level with reference to FIGS. 8 to 10. Both ends of the shield plate 8 are floated vertically by a float 10 fixed to the back side of the vertical portion 8a in proximity to the side walls 1a on both sides, and a connecting member 17 is attached to both ends of the float 10 and a connecting member 17 is attached to the connecting member 17. Wheels 16 are pivotally supported. The rails 15 are attached to the side walls 1a on both sides of the water channel 1.
The direction of the shield plate 8 is regulated by fixing and fixing the pair of wheels 16.

The shielding plate 8 extends to the entrance of the bypass water channel 7, and a movable dam 18 is connected to the end of the vertical portion 8a so as to be located on the extension line of the vertical portion 8a. One end of the movable weir 18 is close to the side wall 7a on the opposite bank of the bypass water channel 7.
The lower end of the movable weir 18 is separated from the bottom of the water channel 1 like the shield plate 8. A partition wall 19 is erected on the bottom immediately downstream of the movable weir 18, and an overflow portion 18a is formed in the movable weir 18, and the partition wall 19 is formed.
A cutout portion 19a is formed in this. The height of the crest 18b of the overflow 18a of the movable weir 18 is made sufficiently lower than that of the water line of the float 10 so that dust can overflow. Further, the height of the crest 19b of the cutout portion 19a of the partition wall 19 is slightly higher than half the height of the bypass channel 7.

Watertight rubbers 20 are installed in the vertical direction on both sides of the cutout portion 19a on the upstream side of the partition wall 19.
The head of 0 is directed to the outside and is in contact with the movable weir 18.
The widths of the overflow portion 18a and the cutout portion 19a are the same as those of the bypass channel 7.
Is more than twice the width of the watertight rubber 20. The height of the lower end of the movable weir 18 is sufficiently lower than the lower end of the lower watertight rubber 20 in the state where the water level is the highest.

The position of the float 10 is shifted to the downstream side so that the transverse cross section of its center coincides with the position of the center of gravity of the movable portion including the movable weir 18.

Next, the operation will be described. The description of the operation of the same components as those described above will be omitted.

First, the movable weir 18 is provided with the vertical portion 8a of the shield plate 8.
Since it is on the extension line of, the force is not applied between the rail 15 and the wheel 16, and therefore the shielding plate 8 moves up and down smoothly according to the fluctuation of the water level. The movable weir 18 is the float 10
And the center of gravity of the float 10 and the center of gravity of the whole float are on the same cross section, and therefore the float 10 does not tilt
Moreover, since the height of the crest 18b of the overflow portion 18a is set appropriately lower than that of the water line of the float 10, dust and dirt flow away from the overflow portion 18a along with the water flow. But,
Since the flow rate is only a part of the flow rate of the water channel 1, the weiring function of the gate 5 is not impaired.

Further, the periphery of the cutout portion 19a of the partition wall 19 is surrounded by a watertight rubber 20, and the movable weir 18 is always provided.
The lower end of the movable weir 1 is lower than the lower end of the watertight rubber 20.
No water leaks between the partition wall 8 and the partition wall 19.

[0030]

The present invention is configured as described above, and it suffices to guide the dust to the bypass water channel by the shield plate, and a certain amount or more of dust flows downstream so that the dust removal work is made uniform between the gates. be able to. In addition, since a float is fixed to the downstream side of the shield plate and a rail for raising and lowering is provided on the side wall, the shield plate can reliably move up and down due to fluctuations in the water level and capture the dust that flows down without being bothered by dust. it can. In this way, the structure is simple, and the gate and water pump facility can be protected from dust with no unmanned power. Further, since the dust is automatically flown away, it is possible to separate the dust removal from the protection of the gate and the like, and to perform dust removal intensively and efficiently. Therefore, it is considered that the present invention greatly contributes to the maintenance of the environment and the reduction of the management cost of the water use facility.

[Brief description of drawings]

FIG. 1 is a side view of a dustproof device for showing an outline and a principle of a main part according to the present invention.

FIG. 2 is a plan view of the dustproof device in the waterway in which the fluctuation of the water level is small according to the embodiment.

3 is a cross-sectional view of the shielding plate shown in FIG.

4 is a cross-sectional view of the bypass channel shown in FIG.

5 is a plan view of relevant parts showing an attachment structure of an end portion of a shielding plate of the water pump facility shown in FIG.

FIG. 6 is a sectional view of a water pump facility according to another embodiment.

FIG. 7 is a side view of essential parts showing an attachment structure of an end portion of a shielding plate of the water pump facility shown in FIG.

FIG. 8 is a plan view of a dustproof device in which a shielding plate of another embodiment is a floating type.

9 is a front view of the bypass channel shown in FIG. 8. FIG.

FIG. 10 is a plan view of a movable weir in the bypass waterway shown in FIG.

FIG. 11 is a plan view of a conventional dustproof device.

FIG. 12 is a side view of what is shown in FIG. 11.

[Explanation of symbols]

 1 Waterway 5 Gate 7 Bypass Waterway 8 Shielding plate 8a Vertical part 8b Water transfer part 10 Float 11 River 14 Intake port 15 Rail 16 Wheel 18 Movable weir 19 Partition wall

Claims (3)

[Claims] 1. A bypass waterway that bypasses the gate is provided on the side of the gate provided in the waterway, and an upstream side of the gate is provided,
A shield plate having a vertical part extending from the water surface to the water surface and a water guide part connected to the lower end of the vertical part and bent toward the upstream side, and one end of the shield plate is arranged at the inlet of the bypass water channel. , The other end is disposed on the opposite bank on the upstream side and diagonally crosses the water channel, and the shielding plate exposes part of the vertical portion in the air, and the depth of the submerged portion of the shielding plate is set to the depth of the water. A dustproof device characterized by being cut in half or less. 2. A shield plate composed of a vertical portion and a water conduit portion is arranged at the intake on the side bank of the river, a float is fixed to the shore side of the vertical portion, and wheels are provided at both ends of the shield plate. A dustproof device, wherein rails for sliding the wheels are provided on the side wall of the water intake port in the vertical direction. 3. A wheel is provided at both ends of the shield plate, a float is fixed to a downstream side surface of the vertical portion, rails for sliding the wheels are vertically provided on both side walls of the water channel, and the rail is provided at an inlet of the bypass water channel. 2. The movable weir, which is located on an extension of the shielding plate on the downstream side, is provided continuously with the shielding plate, and a partition wall which is in a watertight state with the movable weir is erected at the bottom of the water. The dustproof device described.