JP3001177B2 - Dust prevention device at intake using multiple rotating disk type screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the installation of the present invention in an intake channel of an intake channel for irrigation water, cooling water of a power plant, water supply from a river, a lake, or the like to prevent dust flowing into the intake port. Also, the present invention relates to a dust-inhibiting device for an intake using a multi-rotating disk type screen in which the blocked dust is caused to flow down in the downstream direction so that the dust is not collected at the intake.

[0002]

2. Description of the Related Art Conventionally, intakes of irrigation water, cooling water for power plants, water for drinking water, and the like from rivers, lakes, and the like have been installed at intakes to prevent dust from flowing into the intakes. Waste removal means are installed. The dust removing means generally has a screen disposed at an intake of a water channel, and removes dust blocked on the screen surface by human power or mechanical power of a dust remover or the like. The removed waste is disposed of by incineration or landfill.

[0003]

As described above, only the screen is installed at the conventional intake, and the refused waste is removed manually. However, the intake is generally far from the management building where the workers reside. , Labor and daily inspections and work are large. Also, even if a dust remover is installed and the waste is automatically collected, it is not permissible for river management to dump the collected waste into the main stream again. Even if it is a mechanical type, it is necessary to dispose of the collected waste, such as by incineration and landfill.

The present invention eliminates the troublesome work of collecting garbage by allowing the flowing garbage to flow downstream without being collected at the water inlet without obstructing the flow of the main stream, and eliminating the rotation of the screen. It is an object of the present invention to provide a dirt prevention device for an intake port using a multi-rotating disk type screen, which prevents algae adhering to the disk from growing above a certain level and eliminates the need for cleaning the screen.

[0005]

In order to achieve the above object, the present invention provides a device for preventing dust at an intake using a multi-rotating disk type screen. The multi-rotating disc type screens that are skewered are arranged side by side so that the discs of adjacent screens are inserted into each other between the disc gaps of each screen, and are aligned with the inclination angle of the wall surface of the water intake of the water channel. A rotation driving means for arranging the rotation axis so as to be inclined and rotating the rotation axis of the screen so that the rotation direction of the disk is in the same direction as the main stream water flow direction on the side where the disk is in contact with the main flow; By disposing the refuse, the flowing garbage is allowed to flow downstream without being collected at the water inlet without obstructing the flow of the main stream. In this case, it can be installed in the corner drop groove of the water intake.

[0006]

[Operation] This multi-rotational disk type screen dust prevention device does not obstruct the flow of the main stream.
The collected waste can be allowed to flow downstream without being collected at the water inlet, eliminating the complicated work of collecting waste, and the algae adhering to the rotating disk of the screen grow more than a certain amount. This eliminates the need for screen cleaning.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a dirt preventing device for a water intake using a multi-rotating disk type screen according to the present invention.

In FIG. 1, reference numeral 1 denotes a dust blocking device A of the present invention installed at the tip of the side walls 11 and 12 of the water channel opened to the main flow surface of a river or the like, that is, at the tip of the water intake. The dust-preventing device A is mounted on the frame F in a unit shape, and a part of the frame F is mounted so as to be dropped into the angled grooves 13, 13 formed inside the side walls 11, 12.

The dust-reducing device A is constituted by arranging a plurality of multiple rotating disk type screens S in a frame F in parallel.
The frame F supports the upper and lower portions of the multiple rotating disk type screens S arranged in parallel, so that the upper member 21 and the lower member 22 which are vertically arranged in parallel and the vertical members 23, 24, and an upper arm member 25 and a lower arm member 26 are protruded from both ends of the upper member 21 and the lower member 22 so as to be substantially perpendicular to the tips of the arm members 25 and 26. 27 and 28 are integrally provided to form a unit shape, and the disks adjacent to the frame F are inserted in the gap between the disks so that the multiple rotating disk screens S are arranged in parallel so that they can be rotationally driven. Deploy.

The multi-rotating disk screen S is provided with bearings 30 and 31 at upper and lower members 22 and at the lower end of the rotating shaft of the frame F and at positions vertically opposed to each other. The rotary shaft 32 is rotatably supported by the rotary shaft 32. The rotary shaft 32 has a required thickness and an outer diameter. A plurality of distance pieces 34 are alternately fitted to form a screen part, and a power transmission mechanism 35 is provided above the rotating shaft 32.

Since the lower member 22 or the bearing 30 provided at the lower end of the rotating shaft as shown in the drawing is always in water, it is desirable to use a watertight oilless bearing.
, A support shaft 30a protrudes from the shaft 30a, and the support shaft 30a is fitted to an oilless bearing 30b fitted to the lower end of the rotary shaft.
At c, the bearing is kept watertight, and can rotate while supporting the load applied to the rotating shaft 32.

A bearing 3 is provided between the upper and lower members 21 and 22, respectively.
A power transmission means 35 such as a pulley, a sprocket wheel, or a gear is provided above a rotating shaft 32 rotatably supported at 0, 31. The motor shaft 37 projects upward from the upper end of the rotating shaft 32 via a coupling 36.
To join. The motor 38 is directly attached to the upper member 21 or, as shown in FIG.
9 Although the motor 38 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 35 of the rotating shaft 32 driven by the motor 38 and the rotating shafts 32 of all the screens arranged in parallel via a chain or a belt are rotated in the same direction. The rotation direction of the screen rotation shaft 32 is determined so that the plurality of screens S provided on the frame F are in the same direction as the flowing direction of the river. It does not have to match the speed.

The screen portion of the water intake formed by a plurality of screens S arranged in parallel with the frame F has an opening width of the water intake or, as shown in FIG. The number of screens to be installed is determined in such a way as to be large.

The screens S, which are adjacent to each other so that the disks overlap each other in parallel, are assembled by alternately inserting the disks 33 and the distance pieces 34 on the rotating shaft 32.
When the disc 33 is inserted into the rotating shaft 32 so as to rotate integrally with the rotating shaft 32, the disc 33 is locked to the rotating shaft 32, and the discs 33 of the screen S adjacent to each other are arranged in parallel.
Are combined such that the upper and lower surfaces of adjacent disks 33 are close to each other, as shown in FIG. For example, the screen disk 33 in the first row from the left in FIG. 1 has its upper surface close to the lower surface of the disk 33 of the second row screen, The rows are arranged so as to be close to the lower surface of the screen disk 33. Since the disks of the adjacent screens are adjacent to each other on the upper and lower surfaces in this way, even if algae, sludge, etc. adhere to the disks 33 during use and multiply, they are naturally peeled off by the adjacent disks. As a result, the thickness of the screen S does not increase more than the gap between the disks 33 overlapping each other, and it is possible to prevent the filtration efficiency of the screen S from being reduced even over a long period of use. In addition, this disk 3
3 are arranged side by side at a constant pitch on a rotating shaft, the interval between the discs of the screens adjacent to the left and right is set as shown in FIG. The discs of adjacent screens can be inserted into each other at regular intervals, but as shown in FIG.
The spacing between the discs of the adjacent screens is set between the disc pitches so that the algae and the attached sludge are prevented from being thickened as much as possible. The required distance between the screen and the circular plate is set to the required screen width.

The screens S on the outer side of the two end portions are adjacent to each other on only one side, but no screen is provided on the outer end side. For this reason, there are no screen discs in the first row of screens from the left that have the lower surface of the disk, and the upper surface of the disk in the last row of screens does not have a screen disk close to it, so that algae and sludge are not used during use. It will adhere and multiply. In order to prevent this, as shown in FIG.
Fixed scrapers 4, 4,... Are projected from the inner surfaces of the discs 3, 24 in the same manner as the disc pitch so as to be close to the discs. This suppresses the adhesion and growth of algae on the upper and lower surfaces of the front screen disk.

As shown in FIG. 5 (reference example), a large number of screens S arranged in parallel with the water intake port 1 can be supported on a frame F such that their rotation shafts 32 are substantially vertical. As shown in FIG. 6 (an embodiment of a dirt prevention device for an intake using a multi-rotating disk type screen of the present invention), the rotary shaft 32 may be provided to be inclined in accordance with the inclination angle of the wall surface of the intake 1. it can. By providing the rotation shaft 32 at an angle in accordance with the angle of inclination of the wall surface of the water intake port 1, there is an effect that the flow on the mainstream side is not obstructed.

As described above, the intake port 1 of the water channel is provided so as to open to the main stream side of the river, and the multiple rotating disk type screens arranged in parallel so as to block the intake port opening surface are provided. When the disk of each screen is rotated to take water into the water channel, dust flowing down in the main stream is prevented by the rotating disk screen on the upstream side, and the water flows in the direction of the downstream screen in order. It flows down and further down the river. Then, all of the water taken into the water channel is filtered through the screen, and the inflow of dust is prevented. As described above, the refuse flowing down the main stream is not removed at the intake port but flows down the river, so that the trouble of disposing of the collected refuse as in the related art can be omitted.

[0019]

According to the dust-inhibiting device of the intake using the multi-rotating disk type screen of the present invention, the flowing waste is not collected at the water inlet without being interrupted in the downstream direction without obstructing the flow of the main stream. To eliminate the complicated work of collecting garbage, prevent algae adhering to the rotating disk of the screen from growing more than a certain amount, and eliminate the need for screen cleaning work, as in the past. Disposal of incineration, landfill, etc. of the removed waste can be omitted.

Further, the screen can be easily mounted by installing it in the corner drop groove of the water intake.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an intake port dust preventing device using a multi-rotating disk type screen of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a detailed view of a disk portion of the multi-rotating disk type screen.

FIG. 4 is a front view of a driving device for driving the discs in the multiple rotating disc type screen.

FIG. 5 is a longitudinal sectional view of a reference example showing a state in which a multiple rotating disk type screen is vertically attached to an intake port.

FIG. 6 is a longitudinal sectional view of an embodiment of a dust-inhibiting device for an intake port using a multiple-rotation disk screen according to the present invention, showing a state in which a multiple-rotation disk screen is attached to the intake port at an angle.

FIG. 7 is a plan view showing a state in which a multi-rotating disk type screen is attached to an intake port.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intake port 11 Side wall 13 Square groove 21 Upper member 22 Lower member 23 Vertical member 25 Arm material 30 Bearing 32 Rotating shaft 33 Disk 34 Distance piece 35 Power transmission mechanism 38 Motor 4 Fixed scraper

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02B 5/08 104

Claims (2)

(57) [Claims] At a water intake of a water channel, a multi-rotating disc type screen formed by skewing discs on a rotating shaft at a constant pitch,
The screen disks adjacent to each other between the disk gaps of the screens are arranged side by side so as to be inserted into each other, and the rotation axis is arranged to be inclined in accordance with the inclination angle of the wall surface of the water intake of the water channel, A rotating drive means for rotating the rotating shaft so that the direction of rotation of the disk of the screen is on the side where the disk is in contact with the main flow, so as to be in the same direction as the direction of water flow of the main flow; Dust prevention device for water intake using plate type screen. 2. The intake port dirt prevention apparatus using a multi-rotating disk-type screen according to claim 1, wherein the intake port is installed in a corner drop groove of the intake port.