JPS6319429Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to a cover for a water collection port that guides rainwater that accumulates on the side of a road into a sewer pipe.

<Conventional technology> Conventionally, water collection ports were installed along roadsides to guide surface water from rainfall into sewer pipes, and these water collection ports were constructed using iron grids, iron plates with window holes, and window holes. A cover such as a concrete plate had been put in place.

<Problems to be solved by the invention> Since the above-mentioned lattice gaps and window holes in the water collection roof are always open, when odor is generated in the sewer pipe, the odor will pass through the lattice gaps and window holes. It spread into the atmosphere above the ground, causing discomfort to people on the ground. The purpose of this idea is to prevent odors generated in sewer pipes from spreading to the ground.

<Means for Solving the Problems> In this invention, the deodorizing lid is attached to the water collection port by stacking it on the inner surface of the water collection port made of iron or concrete. To this end, this deodorizing lid has a flat frame portion that rests on a step formed on the inner surface of the water collection palate receiving frame to receive the water collection palate, and a peripheral wall portion that hangs downward from the inner periphery of the frame portion. have. A pair of valve bodies connected by a hinge shaft are positioned almost completely inside the surrounding wall portion,
It is supported from below by a pin protruding from the inner surface of the peripheral wall near the hinge axis. Both ends of the hinge shaft are supported by guides on the inner surface of the peripheral wall so as to be able to rise and fall, and a weight of an appropriate weight is suspended, and due to the gravity of this weight, the tip of each valve element tends to rise with the pin as a fulcrum. . A valve seat is formed on the inner surface of the peripheral wall portion and comes into contact with the upper surface of the peripheral edge portion of each valve body.

<Function> In the deodorizing lid described above, each valve body lightly contacts the valve seat due to the gravity of the weight, thereby closing the water collection port and preventing odor from diffusing from the sewer pipe to the outside world. When rainwater, etc. flows into the odor-proof lid through the lattice gaps or window holes in the water collection opening, it first falls into the sewer pipe through the gaps in each part, and as the amount of inflow increases further, it overcomes the gravity of the weight. The valve body opens downward, allowing the accumulated water to fall into the sewer pipe. In this case, the hinge shaft is guided by the guide and moves up and down.

<Example> In the figure, 1 is a water collection port wall, 2 is a lid receiving frame provided on the upper part thereof, and 3 is a water collection port cover, both of which are made of concrete. The lid holder frame 2 has a stepped portion 4 for receiving the lid 3.
The lid 3 has a window hole 5 for letting surface water flow in.
has.

The deodorizing lid 6 has a frame consisting of a flat frame portion 7 that rests on the stepped portion 4 of the lid receiving frame 2, and a peripheral wall portion 8 that hangs downward from the inner circumference of the frame portion 7 along the lower inner circumferential surface of the lid receiving frame 2, Inside the circumferential wall part 8 are located substantially identical valve bodies 10a, 10b hinged by a shaft 9. The valve bodies 10a, 10b are provided with pins 11, 11, 1 protruding from the peripheral wall portion 8 at a position close to the shaft 9.
1 and 11, and both ends of the shaft 9 are placed on the peripheral wall portion 8.
It is supported in U-shaped guides 12, 12 which are welded to the inner surface of the holder so as to be able to move up and down. Reference numeral 13 denotes a closing piece installed across the upper ends of each U-shaped guide 12, and is attached to the shaft 9.
is prevented from coming off, and 14, 14 are mounting screws.

15 is a rod-shaped weight, which is connected by wires 16, 16.
It is suspended from both ends of the shaft 9. Valve seats 17a and 17b project from the inner surface of the peripheral wall portion 8, and the peripheral edge portions of the upper surfaces of the valve bodies 10a and 10b abut, respectively. Note that the weight of the weight 15 is the same as that of the valve body 1.
0a and 10b are selected to have values that allow light contact with the valve seats 17a and 17b, respectively.

The above-mentioned deodorizing lid 6 is fitted into the lid holder frame 2 in the state shown in FIG. 3, and the lid 3 is covered from above.
Since the lid 3 is thin, the top surface of the lid 3 does not become so high as to cause problems. Therefore, the deodorizing lid 6 can be directly attached to a water collection port having only the conventional lid holder frame 2 and lid 3. Then, the valve bodies 10a and 10b are connected to the weight 1.
Due to the gravity of the valve seat 1, as shown by the solid line in Figure 2,
Since the valve is kept in a closed state by contacting the valves 7a and 17b, odor flowing back through the water collection port can be blocked.

When it rains, surface water flows from the window hole 5 to the valve bodies 10a, 1.
When the water flows onto 0b, it flows down into the water collection port through the gaps between the parts. When the amount of inflow increases, the weight of the water overcomes the gravity of the weight 15, causing the shaft 9 to rise and the valve bodies 10a, 10b to move in the direction of the arrow 18, opening the valves. Therefore, the accumulated water falls into the water collection port. Then, when there is no more water flowing in, the valve body 10
a, 10b return to the valve closed position due to the gravity of the weight 15.

<Effects> As described above, when this invention is used, the valve body is normally in the closed position to block the odor flowing back into the water collection port, and when it rains, it automatically opens according to the amount of water, and the valve body is in the closed position. Allow water to flow down into the water collection port. When the opening/closing valve moves, since the movement of the hinge shaft is restricted only in the vertical direction by the guide, it is possible to prevent the valve body from shifting laterally and becoming unable to open/close.

[Brief explanation of drawings]

The figures show an embodiment of this invention, in which Fig. 1 is a plan view, Fig. 2 is a cross-sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line B-B in Fig. 1. It is a figure shown together with a lid holder frame and a water collection palate. 7... Frame portion, 8... Peripheral wall portion, 9... Butterfly plate coupling shaft, 10a and 10b... Valve body, 11... Pin (supporting member), 15... Weight, 17a and 17b
……valve seat.

Claims (1)

[Scope of utility model registration request] A pair of plate-shaped valve bodies connected to each other by a butterfly plate at the center are disposed almost completely inside the peripheral wall portion of the frame, and these valve bodies are provided on the peripheral wall portion at a position close to the hinge joint shaft. A deodorizing lid for a water collection port, which is placed on a supporting member with a weight suspended from the hinge joint shaft, and a valve seat is provided on the peripheral wall portion and abuts on a peripheral edge portion of the upper surface of each valve body.