Water shutoff device

Abstract

The water level will be raised in accordance with the rising water level. [Solution] A water-stopping device comprising a main water-stopping plate 11 installed so as to intersect the flow of water, and an auxiliary water-stopping plate 12 installed so as to be movable upward relative to the main water-stopping plate 11, wherein the auxiliary water-stopping plate 12 is configured to move upward by buoyancy to increase the water-stopping height by the main water-stopping plate 11, and the auxiliary water-stopping plate 12 is configured to rotate upward with the orientation of the auxiliary water-stopping plate 12 being inverted vertically due to buoyancy.

Claims

1. A main water-stopping plate is installed so as to intersect the flow of water, The system includes an auxiliary water-stopping plate that is movable upward relative to the main water-stopping plate, The auxiliary water-stopping plate is configured to move upward due to buoyancy, thereby increasing the water-stopping height provided by the main water-stopping plate. The water-stopping device is characterized in that the auxiliary water-stopping plate is provided to rotate upward, with the position of the auxiliary water-stopping plate being inverted vertically due to buoyancy.

2. The water-stopping device according to claim 1, characterized in that the auxiliary water-stopping plate is pivotally supported on the main water-stopping plate via a hinge at its opposite end so that one end rotates upward due to buoyancy.

3. The water-stopping device according to claim 2, characterized in that the auxiliary water-stopping plate is positioned such that, in its initial state, one end of it is located above the lower end of the main water-stopping plate.

4. The main water-stopping plate is provided with a through-shaped notch that is open at the top. The water-stopping device according to claim 1, characterized in that the auxiliary water-stopping plate rotates upward from a lower position with the notch open to an upper position with the notch closed, accompanied by the inversion of its upper and lower parts.

5. The water-stopping device according to claim 4, characterized in that a watertight material is provided on the inner surface of the notch so as to be compressed by being sandwiched between it and the auxiliary water-stopping plate that has been rotated to the upper position.

6. The water-stopping device according to claim 1, characterized in that the auxiliary water-stopping plate is provided along the entire length in the lateral direction of the main water-stopping plate and rotates upward from a lower position below the upper end of the main water-stopping plate to an upper position that protrudes above the upper end of the main water-stopping plate, accompanied by the inversion of its vertical orientation.

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