JP3193953B2 - Waste intake deterrent device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing dirt from a river or the like at an intake of an intake channel for irrigation water, cooling water for a power plant, or water for a water supply, etc., so that garbage flowing into the intake from the river is taken into a river side intake. The present invention relates to a garbage prevention device for an intake which prevents the refuse from being collected at the intake by flowing down the river downstream.

[0002]

2. Description of the Related Art Conventionally, when a part of a river or other flowing water channel is withdrawn as irrigation water, cooling water for a power plant, water for drinking water, or the like,
In addition, in a system in which a part of river water is withdrawn to circulate the purification equipment and then returned to the river in order to purify the river, the intakes of these intake channels are connected to the river's flowing surface, for example, as shown in the figure. Is formed along the direction of flowing water on the slope of the water intake, and dust removal means is installed at the water intake so as to prevent flowing-down dust and the like from flowing into the water intake channel. Conventional refuse removal means are generally provided with a screen at the intake of the river, and the refuse flowing down the river is blocked by the screen so as not to flow into the water channel. The waste is pushed out to the mainstream of the river and washed away, or the dust is removed from the screen by human power or mechanical power of a dust remover, and the removed garbage is transported to an incineration plant or landfill to be disposed of. .

[0003]

SUMMARY OF THE INVENTION Conventional small pump stations,
Only screens are installed at the intakes of power plants and the like, and the refuse blocked by these screens is removed regularly or irregularly by mechanical or human power. More distant, so daily inspection,
The work of dust removal work is large. Even when an automatic dust remover is installed to automatically collect garbage that has been removed by the screen, dumping the collected garbage into the main stream is not permitted in river management, so it is prevented by the screen and collected. Regardless of whether the waste is human-powered or mechanical, the collected waste must be disposed of by disposal such as incineration and landfill. Also,
In recent years, in order to purify a river, a system has been developed in which a part of the running water of the river is removed, purified through a purification facility, and then returned to the river. However, the place where such river purification equipment is installed generally has no commercial power supply or can use only small power such as solar power, so that there is a problem that a system using large power cannot be installed.

The present invention does not collect refuse flowing through a river at a river-side intake of a water channel, but allows the refuse to flow down the river without fail to perform complicated operations such as refuse collection and cleaning of a screen surface. An object of the present invention is to provide a dust-inhibiting device for an intake port, which eliminates the work and does not lower the filtration efficiency on the screen surface.

[0005]

In order to achieve the above object, a dirt preventing device for an intake according to the present invention comprises a plurality of cylindrical screens each having a large number of disks fixed to a rotating shaft, which are rotatably adjacent to each other at predetermined intervals. it established the intake waterway preparative multiple rotary disc type screen constructed by arranging, as the flow velocity reducing means for reducing the intake flow rate of the river downstream of the intake, collected
Water barriers to prevent the flow to the channel
As far as possible only on the outer peripheral surface of the rear side of the cylindrical screen on the downstream side
It is characterized by being arranged close to .

[0006] In the dust prevention device of the present invention having the above-mentioned structure, the screen installed in the water intake includes:
When a part of the river water flows into the intake channel side through the screen, the garbage flowing down the river will be adsorbed on the screen surface at the intake flow rate, but it will be sequentially absorbed downstream by the rotating screen while being adsorbed by the screen. Moving. And when reaching the river downstream end of the screen, the river downstream screen surface is designed to reduce the intake flow velocity on the downstream side of the intake port, so the adsorption power of the garbage to the screen surface is weakened, The garbage that has been adsorbed and moved on the screen surface is separated from the screen surface by the river's flowing water power and flows downstream, so that the running water is constantly filtered through the screen surface without dust removal. A predetermined amount of water can be taken into the water intake channel.

[0007] Then, the dust blocking device of the intake is only disposed proximate the waterstop river downstream back of the multi rotating disc type screen, the intake at the position of the waterstop blocking As a result, the water intake flow velocity can be easily and reliably reduced, and since the water intake velocity is higher at a position higher than this, the waste flowing down the river can be filtered and taken in, and the waste can be allowed to flow downstream as it is.

[0008] In this case, the flow rate reducing means can be formed with a resistance plate on the side of the water stop plate facing the multiple rotating disk type screen.

[0009] In the refuse preventing device for an intake port of the present invention having the above-described structure, the intake flow velocity on the downstream side of the river can be effectively reduced with a simple structure.

Further , the flow velocity reducing means may be formed by forming the thickness of the disk of the cylindrical screen at the downstream position constituting the multiple rotating disk type screen to be larger than the thickness of the other cylindrical screens. it can.

In the refuse preventing device for an intake port of the present invention having the above-described structure, the intake flow rate on the downstream side of the river can be reliably reduced with a simple structure, and the intake can be prevented.

[0012] Further, according to the present invention, there is provided a dust blocking device for an intake port,
A multi-rotational disc type screen constituted by arranging a plurality of cylindrical screens having a large number of discs fixed on a rotating shaft adjacent to each other so as to be rotatable at predetermined intervals is installed at the intake of the water channel, and the A cylindrical screen on the upstream side of the river is used as a means for preventing dust adsorption.
A guide plate is provided along the river-side outer peripheral surface of the screen .

In the refuse preventing device for an intake of the present invention having the above structure, refuse flowing down the river is surely attached to the outer peripheral surface of the cylindrical screen disposed at the most upstream side. It can be washed away downstream.

[0014] Then, the dust blocking device of the intake port, it is possible to prevent the falling garbage cylindrical screen disposed on the most upstream side with a simple structure from adhering.

[0015] Further, the dust suction preventing means is formed by forming the thickness of the disk of the cylindrical screen at the upstream position constituting the multiple rotating disk type screen to be larger than the thickness of the other cylindrical screens. Can be.

In the refuse preventing device for an intake according to the present invention having the above-described structure, it is possible to surely reduce the intake flow velocity on the upstream side of the river with a simple structure, to prevent the intake, and to move the refuse to the downstream side. it can.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of an apparatus for preventing dust from entering an intake port according to the present invention. In the drawing, reference numeral 1 denotes a river, and an intake 3 of an intake channel 2 is arranged so as to face the main flow surface of the river 1, that is, facing the river, and to open along the direction of water flow. The dust prevention device 4 of the present invention is installed at the distal end portions of the nearby opposing side walls 31, 32, that is, at the intake port distal end position.

In the refuse preventing device 4, a large number of cylindrical screens S formed by mounting a large number of disks on a shaft are mounted side by side on a frame F to form a multiple rotating disk type screen. The frame F is mounted so that a part of the frame F is dropped into angled grooves 33, 33 formed inside the side walls 31, 32.

The frame F of the refuse preventing device 4 has upper and lower members 41 and 42 arranged in parallel in the vertical direction in order to support the upper and lower portions of each of the cylindrical screens S arranged in parallel of the multi-rotating disk type screen. Vertical members 43 and 44 are bridged between both ends of the upper and lower members 41 and 42, and an upper arm member 45 and a lower arm member 46 are protruded from both ends of the upper member 41 and the lower member 42, respectively. The inserts 47, 47 which are substantially perpendicular to the ends of the members 45, 46 are integrally provided and formed,
The discs adjacent to the frame F are arranged in parallel so that they can be inserted between the disc gaps so that the cylindrical screens S can be rotationally driven.

Each of the multi-rotating disk type cylindrical screens S is provided with a bearing 50 and a bearing 50 at a position facing the upper member 41 and the lower member 42 of the frame F or the lower end of the rotating shaft, respectively.
51, a rotating shaft 52 is rotatably supported between the bearings 50, 51, and a circular plate 53 having a required plate thickness and an outer diameter is provided on the rotating shaft 52; A screen portion is formed by alternately fitting a plurality of distance pieces each having a thickness smaller than the diameter of the disk 53, and a power transmission mechanism 55 is provided above the rotary shaft 52. A power transmission means 55 such as a pulley, a sprocket wheel, or a gear is provided above the rotating shafts 52 and is driven by a motor 56.
Although the motor 56 is an electric motor, a hydraulic motor or an air motor can be used, and a hydraulic power or a wind power can also be used.

The power transmission mechanism 55 of the rotary shaft 52 driven by the motor 56 and the rotary shafts 52 of all the cylindrical screens arranged in parallel via a chain or a belt.
Are rotated in the same direction. The rotation direction of the cylindrical screen rotation shaft 52 is determined so that the plurality of cylindrical screens S provided on the frame F are in the same direction as the flowing direction of the river. The peripheral velocity does not have to match the river's running velocity.

The screen portion of the water intake formed by a plurality of cylindrical screens S arranged in parallel with the frame F has an intake opening width or a water intake opening in the downstream direction as shown in the drawing. The number of cylindrical screens to be installed is determined so as to be larger.

A large number of cylindrical screens S arranged in parallel with the water intake 1 can be supported on the frame F so that the rotating shaft 52 is substantially vertical as shown in the figure, or the inclination angle of the wall surface of the water intake opening can be adjusted. In addition, the rotation axis may be provided at an angle, and the slope of the river and the surface of the cylindrical screen may be flush with each other. By adopting the latter, it is possible to arrange the main flow side without obstructing the flow.

In order to prevent the falling dust from adsorbing or adhering to the outer peripheral surface of the cylindrical screen located at the most upstream end position, in particular, to the upstream side of the river, the multi-rotating disk type screen has an upstream end on the river side. The prevention means 5 is provided.
The dust suction preventing means 5 is provided with a guide plate along the mainstream side outer peripheral surface of the cylindrical screen at the upstream end position. As shown in FIG. 1, the guide plate 5 is formed in an arc shape so as to be along the outer peripheral surface of the disk of the cylindrical screen S, so that the screen at the most upstream side of the river has no screen that rotates upstream. Therefore, the effect of preventing dust flowing down is less than that of other screen parts.However, by providing a guide plate along the river side outer peripheral surface of the cylindrical screen arranged at the uppermost stream side of the river, Along the guide plate, dust that adheres to the outer peripheral surface of the screen can be forced to flow downstream in the downstream direction.

The dust suction preventing means 5 does not use the guide plate 5 but by increasing the thickness of each disk forming the cylindrical screen disposed at the most upstream end, as compared with the disks of the other screens. Can also achieve its purpose.
That is, the thickness of the disk constituting the cylindrical screen at the upstream position is made thicker than the thickness of the cylindrical screen which is disposed adjacent to the downstream side and overlaps the disks to narrow the gap in the screen portion. It is assumed that.

At the downstream end of the multi-rotating disk type screen, the speed of inflow into the flowing water channel is reduced as compared with other places, so that the adhesion or adsorption of dust to the outer peripheral surface of the screen is weakened. A means for reducing the flow velocity will be provided so that the water will flow naturally down the river.

The flow velocity reducing means provided at the intake on the intake channel side comprises a back surface of a cylindrical screen S arranged downstream of the river among the multiple rotating disk type screens arranged at the intake.
That is, the water stop plate 7 is arranged as close as possible to the outer peripheral surface of the cylindrical screen on the side opposite to the river. Thus, even if a part of the flowing water of the river flows in from the gap between the disks of the cylindrical screen on the downstream side of the river, the flow of water to the intake channel side is prevented by the water stop plate 7 on the rear side. The flow rate of water intake in the section can be reduced. For this reason,
In the cylindrical screen portion arranged on the upstream side of the downstream cylindrical screen, a part of the flowing water of the river flows into the intake channel from the eye of each cylindrical screen. Since it is in communication with the intake channel, the inflow velocity flowing from this screen is fast because there is no obstacle, and the refuse flowing down the main stream of the river is affected by the inflow pressure of this inflow water and the outer periphery of the cylindrical screen on the main flow side While being adsorbed on the surface, each of the adjacent screens is successively flowed downstream by rotation. Then, the dust reaches the downstream cylindrical screen portion. However, on the main stream side of the cylindrical screen on the downstream side of the river, there is no adsorption force generated by the inflow water pressure of the garbage. It will be.

In another embodiment of the flow velocity reducing means shown in FIG. 4A, the water stop plate 7 provided on the back surface of the downstream cylindrical screen is provided with a projection 8. The protrusions 8 are arranged such that the tips of the protrusions are located as close as possible to the outer peripheral surface of the disk between adjacent disks of the downstream cylindrical screen. Accordingly, even if a part of the river flow water flows in through the gap between the discs of the screen, the flow is prevented from flowing down to the intake channel side by the projections. Will decrease,
As in the above-described embodiment, the adsorption of dust is released at this position.

In another embodiment shown in FIG. 4 (2), the thickness of the disk constituting the cylindrical screen on the downstream side is made larger than the thickness of the disks of the other cylindrical screens and is adjacent to the other cylindrical screen. When arranging the screen disks so as to overlap each other, the gap between the plates of the downstream screen is extremely narrower than the other,
In this way, the inflow of the river is prevented. Thus, on the river-side outer peripheral surface of the downstream cylindrical screen, dust is not adsorbed, so that the dust easily flows down on the river main stream.

Further, at the upstream end of the multiplex screen 4, an arc-shaped guide 5 is disposed along the outer peripheral surface of the upstream cylindrical screen S on the river mainstream side. this is,
The cylindrical screen on the upstream side of the river does not have a screen that rotates upstream and has a smaller blocking effect than others.However, by providing a guide plate along the cylindrical screen on the upstream side of the river, dust can be reduced downstream. Force down.

Accordingly, the intake of the water channel is provided so as to open to the main stream side of the river, and multiple rotating disk type screens are arranged in parallel so as to block the opening of the intake. When rotating the circular plate to take water into the waterway, the screen on the most upstream side of the river has no screen rotating on the upstream side, so the garbage flowing down tries to adhere to the outer peripheral surface of the cylindrical screen at the most upstream side, Since the guide plate is formed on the uppermost stream-side cylindrical screen, the falling dust is forcibly swept downstream by the guide plate. As a result, the uppermost cylindrical screen is less effective in preventing debris than other screen parts, but the debris flowing down the main stream in this way is reduced to the second and lower cylindrical screens. When water is taken out, the water is blocked by the screen surface by the flowing water pressure, and the water flows down along with the rotating action of the cylindrical screen and the water flow, and is sequentially transported toward the downstream screen, and further flows down the river. In this way, the dust is prevented from flowing into the water intake channel by the cylindrical screen, and all the water intake into the water channel is filtered from the screen, thereby preventing the dust from flowing into the water intake channel. As described above, the refuse flowing down the main stream is not removed at the intake port, but is allowed to flow down the river, so that it is not necessary to dispose of the collected refuse as in the related art. Then, when reaching the most downstream cylindrical screen portion, the inflow at the screen portion is suppressed, so that the garbage that has adhered to the outer peripheral surface of the cylindrical screen until now has a weaker adhesive force, and the garbage of the river main stream has become weaker. It flows down along the water flow.

[0032]

According to the first aspect of the present invention, in the screen installed at the intake, the intake flow velocity on the downstream side of the river is reduced, so that a portion of the river water flows to the intake channel side via the screen. When water flows in, the waste flowing down the river will be adsorbed on the screen surface at the intake flow rate, but it will move sequentially downstream while being adsorbed on the screen by the rotating screen and will be at the downstream end of the screen When the water reaches the downstream side of the screen, the inflow of water into the intake channel is blocked by resistance, so the flow velocity of intake water is also reduced and the adsorbing power of the garbage on the screen is weakened. The garbage that has come here is separated from the screen surface by the flowing water power of the river and flows down in the downstream direction. There is an advantage that it is a predetermined amount of water intake the flowing water is filtered to intake roadside on.

By simply disposing the water stop plate close to the back of the multiple rotating disk type screen on the downstream side of the river, water intake at the position of the water stop plate is prevented, and the water intake flow velocity is easily and reliably reduced. Above this point, the water intake flow velocity is high, so that the refuse flowing down the river can be filtered and taken in, and the refuse can be allowed to flow downstream as it is.

According to the second aspect of the present invention, it is possible to effectively reduce the water intake flow velocity on the downstream side of the river with a simple structure.

According to the third aspect of the present invention, it is possible to reliably reduce the water intake flow velocity on the downstream side of the river with a simple structure and prevent water intake.

According to the fourth aspect of the present invention, the refuse flowing down the river can flow down reliably without adhering to the outer peripheral surface of the cylindrical screen arranged at the most upstream side. it can.

Since the screen at the most upstream side of the river does not have a screen that rotates upstream, the effect of preventing dust flowing down is smaller than that of other screen parts. By providing a guide plate along the river side outer peripheral surface of the cylindrical screen to be
Along the guide plate, dust to be attached to the outer peripheral surface of the screen can be forced to flow in the downstream direction.

According to the fifth aspect of the present invention, it is possible to reliably reduce the water intake flow velocity on the upstream side of the river with a simple structure, prevent the water intake, and move the waste to the downstream side.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a dust blocking device for an intake port according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a vertical sectional view of the same side surface .

FIG. 4 is an explanatory diagram of a flow velocity reducing means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intake port 31 Side wall 33 Angle drop groove 41 Upper member 42 Lower member 43 Vertical member 45 Arm material 50 Bearing 52 Rotating shaft 53 Disk 55 Power transmission mechanism 56 Motor 4 Dust prevention device F Frame S Cylindrical screen 5 Guide 6 Scraper 7 Stop Water plate 8 projection

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takuya Sakaguchi 3-1-15 Sunayama Minami, Wakayama City, Wakayama Prefecture Wakayama Construction Office, Kinki Regional Construction Bureau, Ministry of Construction (72) Inventor Tetsuo Yamagata Shimosakabe, Amagasaki City, Hyogo Prefecture 3-1-1-1, Nippon Kiden Kogyo Co., Ltd. (72) Inventor Eiichi Muto 3-1-1-1, Shimosakabe, Amagasaki City, Hyogo Prefecture Nichiki Kiden Kogyo Co., Ltd. (72) Inventor Akira Yoneda Amagasaki, Hyogo Prefecture 3-11-11 Shimosakabe Inside Hitachi Metals Industries Co., Ltd. (56) References JP-A-8-151622 (JP, A) JP-A-6-226015 (JP, A) (58) Fields studied (Int .Cl. ⁷ , DB name) E02B 5/00 E02B 5/08 102 B01D 33/00

Claims (5)

(57) [Claims] 1. A multi-rotating disc type screen comprising a large number of discs fixed on a rotating shaft and arranged adjacent to each other so as to be rotatable at predetermined intervals, is installed at a water intake of a water channel. As a means to reduce the intake flow velocity on the downstream side of the river , the generation of flow to the intake channel side
The water blocking plate for blocking is replaced with a cylindrical screen on the downstream side of the river.
A dust-inhibiting device for the water intake, which is disposed as close as possible to only the outer peripheral surface of the back surface of the intake. 2. The dirt prevention device for an intake according to claim 1 , wherein a resistance plate is formed on a side of the water stop plate facing the multi-rotation disk type screen. 3. A multi-rotating disk type screen, which is constituted by arranging a plurality of cylindrical screens having a large number of disks fixed to a rotating shaft adjacent to each other so as to be rotatable at predetermined intervals, is installed at an intake of a water channel, and Multi-rotating disk type screen as flow velocity reduction means to reduce the intake flow velocity downstream of the river at the mouth
Thickness of the cylindrical screen disk at the downstream position that constitutes
Is formed to be thicker than other cylindrical screens.
A debris prevention device at the water intake , characterized in that: 4. A multi-rotating disc type screen comprising a plurality of cylindrical screens having a large number of discs fixed to a rotating shaft arranged adjacent to each other so as to be rotatable at predetermined intervals, is installed at a water intake of a water channel, and multiplexed. The cylindrical screen on the upstream side of the river that constitutes the rotating disk type screen is equipped with
Guide along the river-side outer peripheral surface of the cylindrical screen
A garbage prevention device at the water intake, wherein a plate is provided . 5. A multi-rotating disc type screen comprising a plurality of cylindrical screens having a large number of discs fixed to a rotating shaft arranged adjacent to each other so as to be rotatable at predetermined intervals, is installed at a water intake of a water channel, and is multiplexed. The cylindrical screen on the upstream side of the river that constitutes the rotating disk type screen is equipped with
And the upstream position of the multi-rotating disk screen
Adjust the thickness of the disk of the cylindrical screen of
A dust prevention device for an intake, characterized in that the device is formed so as to be thicker than the plate thickness of the intake.