JP2001172947A - Channel gate device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a channel gate device excellent in water-tightness in a closed state and capable of surely preventing the backflow to a channel side or leakage. SOLUTION: The channel gate device 10 is so constituted that it has a door body 13 pivoted in a tiltable manner and generating buoyancy in the water in a channel 12 making water flow therein, it has a function to close the channel 12 by erecting the door body 13 when a river side 11 is swollen, the lower part of the door body 13 is pivoted on a lower stopper 18 of the bottom of the channel 12 through a hinge 14 in a tiltable manner, an elastic sealant 15 bendable together with the tilting of the door body 13 is attached to a pivoting part, an elastic sealant 17 detachable to an upper stopper 16 of the ceiling section of the channel 12 is attached to an upper edge section of the door body 13 and that an elastic sealant 20 slidable to a side stopper 19 of the inside of the channel 12 is attached to both side edge sections of the door body 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterway gate device having a backflow prevention function, which is installed in a gutter or a gutter pipe as a river management facility.

[0002]

2. Description of the Related Art Flood gates and pipes provided at the boundary between a waterway and a river have conventionally been float-type gates in order to prevent backflow to the waterway side when the river is flooded due to heavy rain. Equipment is installed.

[0003] In this float type gate device, a hollow door body whose size and shape are matched to the cross section of the channel on the water channel side is disposed at the boundary between the water channel and the river, and the lower end of the door is connected to the bottom surface of the channel. This is a structure in which a portion is pivotally supported so as to be tiltable in a direction parallel to the flow path. Then, the door body is raised and lowered by utilizing the difference in buoyancy received by the water levels on the water channel side and the river side.

[0004] Such a float type gate device has a simpler structure and an artificial structure as compared with a conventional undulating type gate device in which a door body is raised and lowered by the buoyancy of water and opened and closed by a drive mechanism. A significant improvement has been achieved in that no special operation is required.

[0005]

In the conventional float type gate device, when the door rises due to a rise in water on the river side and the flow passage is closed, the shaft support portion at the lower portion of the door body or the outer periphery of the door and the flow passage are closed. There may be a gap at the boundary with the inner peripheral surface,
The water on the river side flows into the channel from these gaps, and there is a possibility that reliable backflow prevention cannot be achieved.

SUMMARY OF THE INVENTION An object of the present invention is to provide a waterway gate device which is excellent in watertightness in a closed state and can reliably prevent backflow and water leakage to the waterway side.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, a gate device for a waterway according to the present invention is provided with a door body which is pivotally supported in a flow path in which a fluid flows in a predetermined direction and which generates a buoyancy in the fluid. It is a water channel gate device that closes the flow path by raising the door body due to the increase of the fluid on the downstream side, wherein the flow path is formed by the door body at the pivot portion of the door body and the peripheral edge of the door body. By providing a seal member that prevents the passage of fluid when closed, it is possible to prevent a gap from being generated at the boundary between the upright door body and the inner periphery of the flow path. Thus, backflow and water leakage to the water channel side can be reliably prevented.

[0008] As the seal member, an elastic seal member is provided on a pivot portion of the door body so as to be able to bend along with the tilt of the door body, and on both side edges of the door body is slidably provided on the inner side surface of the flow path. By providing the elastic seal material provided and the elastic seal material attached to and detachable from the ceiling of the flow passage at the upper edge of the door body, the shaft support portion and both side edges of the door body are elastically sealed. Material is always kept watertight, and the upper edge of the door body becomes watertight with an elastic seal material when the door body is completely erected,
It is possible to ensure excellent watertightness regardless of the inclination angle of the door body, and it is possible to reliably prevent backflow and water leakage to the water channel side.

By using a rubber material as the elastic sealing material, a watertight structure excellent in hermeticity and durability can be formed.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective sectional view showing a waterway gate device according to an embodiment, FIG. 2 is a longitudinal sectional view of the waterway gate device, FIG. 3 is a front view of the waterway gate device, and FIG. FIG. 5 is a rear view of the device, and FIG. 5 is a plan view of the waterway gate device.

As shown in FIG. 1, a waterway gate device 10 according to the present embodiment is installed at a boundary between a river 11 and a waterway 12, and is pivotally supported in the waterway 12 in which water flows in a certain direction. The river 1 has a door 13 that generates buoyancy in water.
When the water level on one side increases, the door 13 rises by the buoyancy to close the water channel 12.

The lower portion of the door 13 is pivotally supported by a lower door stop 18 formed on the bottom surface of the water channel 12 via a hinge 14 so as to be tiltable. A sealing material 15 is provided, and an upper edge of the door 13 is provided at an upper edge of
An elastic seal member 17 is provided on both side edges of the door body 13 so as to be able to be disengaged from and attached to the side wall 6 of the water passage 12. Is attached.

When the water body 12 is closed due to the rising water in the river 11 and the waterway 12 is closed, the boundary between the door body 13 and the inner periphery of the waterway 12 has no gap due to the elastic sealing members 15, 17 and 20. In this state, the watertightness in the closed state is improved, and backflow and water leakage to the water channel 12 can be reliably prevented.

Further, the elastic support members 15 and 20 provided on the door body 13 keep the pivotal support portion and both side edges of the door body 13 watertight at all times, and the upper edge of the door body 13 is covered with the door body 13.
Is completely upright, the elastic sealing material 17 comes into close contact with the upper door stop 16 to be in a watertight state, so that the watertightness can be ensured regardless of the inclination angle of the door 13, Backflow and water leakage to the water channel 12 can be reliably prevented.

The upper door stop 16, the side door stop 19 and the lower door stop 18 are made of stainless steel, and the elastic seals 15, 17, and 20 are made of rubber. It is possible to form a watertight structure having excellent sealing performance and durability.

[0016]

According to the present invention, the following effects can be obtained.

(1) A door body which is pivotally supported in a flow path in which the fluid flows in a certain direction and which generates a buoyancy in the fluid,
In a waterway gate device in which the door body rises due to an increase in the fluid on the downstream side and closes the flow path, the fluid when the flow path is closed by the door body is provided at the pivot portion of the door body and the peripheral edge of the door body. By providing a seal member for preventing passage, it is possible to prevent a gap from being generated at a boundary portion between the upright door body and the inner periphery of the flow path, so that watertightness in a closed state is improved, and Backflow to the side and water leakage can be reliably prevented.

(2) As a seal member, an elastic seal member is provided on the pivot portion of the door body so as to bendable with the tilting of the door body, and slidable on both side edges of the door body with respect to the inner surface of the flow path. By providing an elastic seal material attached to the door body and an elastic seal material attached to the upper edge of the door body so as to be detachable with respect to the ceiling of the flow path, the shaft support portion and both side edges of the door body are provided. Is always watertight, and the upper edge of the door is watertight when the door is fully upright, ensuring watertightness regardless of the inclination angle of the door. Thus, backflow and water leakage to the water channel side can be reliably prevented.

(3) By using a rubber material as the elastic sealing material, a watertight structure excellent in hermeticity and durability can be formed.

[Brief description of the drawings]

FIG. 1 is a perspective sectional view showing a waterway gate device according to an embodiment.

FIG. 2 is a longitudinal sectional view of the water channel gate device of FIG. 1;

FIG. 3 is a front view of the waterway gate device of FIG. 1;

FIG. 4 is a rear view of the waterway gate device of FIG. 1;

FIG. 5 is a plan view of the water channel gate device of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Gate device for waterways 11 River 12 Waterway 13 Door 14 Hinge 15, 17, 20 Elastic sealing material 16 Upper door stop 18 Lower door stop 19 Side door stop

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masatoshi Yamada 450-1 Ishikawa, Ueki-machi, Kamoto-gun, Kumamoto F-term (reference) in Kaisei Kogyo Co., Ltd. 2D019 EA03

Claims (3)

[Claims] A door that is pivotally supported in a flow path in which a fluid flows in a certain direction and that generates a levitation force in the fluid;
A waterway gate device for closing the flow path by raising the door body due to an increase in the fluid on the downstream side, wherein the gate body supports the flow passage at a pivot portion of the door body and a peripheral portion of the door body. A gate device for a water channel, comprising a seal member for preventing passage of fluid when the channel is closed. 2. An elastic sealing material attached to a pivot portion of the door body so as to be able to bend with the tilting of the door body as the seal member, and an inner side surface of the flow passage at both side edges of the door body. 2. The waterway according to claim 1, further comprising: an elastic seal member slidably attached to the door member; and an elastic seal member attached to an upper edge of the door body so as to be disengageable from a ceiling of the flow passage. Gate device. 3. The waterway gate device according to claim 2, wherein a rubber material is used as said elastic sealing material.