JP3314364B2 - Screen device for intake channel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen device for preventing dust, fish and the like from entering a water intake channel through a water intake when water is taken from a river or the like.

[0002]

2. Description of the Related Art Conventionally, as a means for preventing debris, fish and the like from entering an intake channel from an intake port, a screen device constituted by a wire mesh immediately formed of steel wire is crossed with the intake port in a water flow. If it is fixed to the air intake or if only the fish is prevented from entering, a pipe with a large number of air ejection holes is installed on the bottom of the water intake port, and the pipe is connected to an air compressor to connect the air ejection holes. It is known that air is blown out of the water intake to generate a row of bubbles at the water intake so as to prevent fish from entering.

[0003]

However, in the former case, although the fish can be prevented from entering the intake channel by the screen device, garbage flowing with running water adheres to the surface of the screen device. Therefore, there is a defect that must be removed frequently.

[0004] In the latter case, there is no such a problem, but when the flow of water is fast, air bubbles are caused to flow, so that not only there is a problem that the water cannot be used in a place where the flow of water is fast, but also dust enters the intake channel. There is a problem that cannot be prevented.

An object of the present invention is to provide a screen device for an intake channel free of such problems.

[0006]

Means for attaining the above object of the present invention is to provide a water supply system for a river, which extends from a river to a water intake of a water intake channel which is provided on both sides of the water intake. A screen belt made of wire mesh running toward the downstream side of the river is provided, and a baffle that blocks the inflow of intake water is attached to the back side of the winding side of the screen belt facing the river. The upper end of the shaft is connected sequentially with a plate- shaped connecting piece, and the upper surface of the support plate
And support both sides the lower surface of the plate-shaped connecting piece, screen Bell
Wherein the moving the door.

[0007]

According to the screen device for an intake channel having the above-mentioned structure, a screen belt stretched over the intake of the intake channel can prevent fish as a fishery resource from entering the intake channel, so that garbage and the like enter. Can be prevented. In addition, at the front part of the baffle provided on the back side of the winding side of the screen belt, there is no flow in the water intake direction because inflow water is not taken in.
The garbage and the like conveyed to this portion are easily separated from the screen belt, and are caused to flow downstream by the water flowing in the portion in the downstream direction. In addition, the screen belt
It is supported by the support plate above the water intake by the upper plate
So you can move without sagging.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the attached drawings.

In the drawing, reference numeral 1 denotes a screen belt provided at an intake A of an intake channel. As is apparent from FIG. 4, the screen belt 1 is alternately bent in the longitudinal direction to the opposite side so that a peak 1a is formed. A large number of strips 1a having an appropriate width and formed continuously with the valleys 1a-2 are arranged side by side in the same direction, and the peaks 1a-1 of the adjacent strips 1a are fitted into the valleys 1a-2. Then, a shaft 1b is inserted into a hole (not shown) provided in the overlapping portion to connect each band plate 1a to bendable and endlessly to form a wire mesh endless belt. The screen belt 1 is provided so as to extend between sprockets 3 and 3 on the longitudinal axes 2 and 2 which are provided on both sides of the screen belt 1. Plate 4 was attached.

However, since the sprocket 3 on the longitudinal axis 2 on the driven shaft side is merely for guiding the screen belt 1, it can be replaced with a disk. There is no need to provide a bearing or the like between the sprocket 3 and the vertical axis 2 on the driven shaft side in water.
There is an advantage that the structure is simple.

On the upper portion of the screen belt 1, there are provided plate-shaped connecting pieces 1c which are arranged alternately one above the other in the longitudinal direction thereof and whose both ends overlap each other.
It was provided to support. Note that the width of the plate-shaped continuous piece 1c in the front-rear direction is slightly larger than the width of the screen belt 1.

A guide groove 5 for guiding the screen belt 1 is provided at an upper portion of the water intake A, and the screen belt 1 is attached to support plates 5a, 5a of the guide groove 5 by the respective plate-shaped connecting pieces 1a.
c to be moved along the guide groove 5.

Further, the screen belt 1 moves along a guide beam 6 provided at the water intake port A so as to come into contact with the back side of the intermediate position in the vertical direction, and the lower end of the screen belt 1 draws the back surface. Step C provided at the bottom of mouth A
It is guided and moves.

Reference numeral 7 denotes a motor for driving the longitudinal axis 2, and reference numeral 8 denotes a support rod for supporting the guide beam 6.

The arrow indicated by F1 in FIG.
F2 indicates a flow that is diverted to the intake A, and F3 indicates a flow in which a part of the river flow F1 is guided to the baffle plate 4 and goes downstream.

[0016]

Since the present invention has the above-described structure, the following effects can be obtained.

Since a screen belt made of wire mesh is provided at the intake of the intake channel so as to be stretched between sprockets on the vertical axis installed on both sides of the intake, fish enters the intake channel from the intake by the screen belt. In addition to helping to protect fisheries resources by preventing dust, the dust is removed from the screen belt by the movement of the screen belt, so that the dust is not clogged by the dust attached to the screen belt. Since the baffle plate is attached to the back surface of the baffle plate, the water flowing toward the intake channel side is eliminated in the baffle plate portion and flows toward the downstream side, so that dust attached to the screen belt is separated from the screen belt at the portion and the downstream side , And the operation can be continued in a stable state without dust being caught in the screen belt. The screen belt is a plate-like connecting plate at the upper end.
Moves while being supported by the support plate above the outlet,
It can move smoothly without sagging.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an enlarged sectional view of FIG. 2 taken along the line III-III.

FIG. 4 is an enlarged view of a part of FIG. 1;

[Explanation of symbols]

1 Screen belt 1C Plate connection
Piece 2 longitudinal axis 3 sprocket 4 baffle plate 5 guide groove 5a support board 6 guide beam A water intake

Claims (1)

(57) [Claims] 1. A screen formed of a wire mesh that extends between the longitudinal axes installed on both sides of an intake channel at an intake channel of an intake channel that takes in water from a river, and a portion facing the river runs toward the downstream side of the river. A belt is provided, and a baffle plate that blocks the inflow of water is attached to the back side of the winding side facing the river of the screen belt, and the upper ends of the shafts of the screen belt are sequentially connected by plate- shaped connecting pieces. in the upper surface of the formed support plate to support both sides the lower surface of the plate-shaped connecting piece, waterways screen device preparative characterized thereby move <br/> moving the screen belt.