JPH0332574Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an adjustment device for a drain hole in the side wall of a waterway.In particular, since a valve chamber is formed in the large chamber that can have a large distance from the float ball valve, a large amount of dirt is removed when the valve is opened. It is possible to drain gray water into the waterway, which makes it possible to use water collection pipes without having to install many devices for the waterway, and it is sufficient to install a small number of devices of the present invention. The float ball valve is made to float vertically even though the hole is removed, and the valve is positioned by a circle. Moreover, a non-porous perforated plate is placed above the valve so that the turbulent flow from the waterway side does not hit the float ball valve. Since the float ball valve is installed at the water inlet, it can close the valve hole extremely reliably, and there is no risk of water in the waterway escaping into the soil. 2, a water passage 4 is provided on the other side, a small chamber 7 is formed in the large chamber 1, a valve hole 9 is provided in the top plate 5 forming the small chamber 7, and a communication port is provided in the large chamber 1. 3 to the valve hole 9 of the top plate 5 is formed, and a small chamber 7 is formed.
A float ball valve 11 is provided in a positioning circle 10 provided directly below the valve hole 9 within the valve hole 9 so as to be vertically movable, and a perforated plate 12 with a non-porous upper portion is provided at the water inlet 4. It is something.

In addition, if the perforated plate 12 is provided in a removable manner and the positioning circle 10 is provided in a replaceable manner as shown by the chain line in FIG. 1, it will be possible to quickly and easily replace the float valve due to deterioration or the like. It is something that can be done.

Originally, in agricultural canals and the like, drainage holes are provided here and there to prevent the risk of the water pressure of underground water lifting the entire canal and destroying it. If the water level of the waterway is below the drainage hole,
The water in the soil is discharged into the waterway, but if the water level is above the drain hole, there is a disadvantage that the water can conversely escape into the soil through the drain hole.

Therefore, conventionally, a check valve has been installed in the drain hole, such as the one shown in FIG. 4 (Japanese Utility Model Publication No. 47-30985). In this conventional example, a small-diameter pipe b is buried obliquely in the side wall a of a waterway, a part of the pipe b is inclined to form a valve seat c, and a pipe b
A float ball valve d with a diameter close to the inner diameter of the drain hole is housed, and a valve escape prevention part e is provided.When the water level of the water is higher than the drain hole, the float ball valve d closes as shown by the solid line, and the water level is low. In this case, as shown by the solid line, the valve hole f is opened in relation to the valve escape prevention part e, and the underground water is drained into the waterway.

In the case of the conventional example, if the difference between the inner diameter of the pipe and the outer diameter of the float ball valve is large, that is, the distance between the float ball valve and the valve chamber is large, a large amount of underground water can pass through when the valve is opened. However, if the difference between the pipe and the float ball valve is large, the valve will move to the top of the pipe due to buoyancy when the valve is closed, and will not come into close contact with the lateral valve hole, making it impossible to close the valve. Therefore, in the conventional example, it is necessary to use a float ball valve with a diameter close to the inner diameter of the pipe, and as a result, only a small amount of water can be drained when the valve is opened, and as a result, a large number of devices must be installed at small intervals. Moreover, since the difference between the inner diameter of the pipe and the diameter of the float valve is not zero, it is not possible to close the valve completely, and if the water level is less than half of the inside of the pipe, the water is gradually drained into the soil. The current situation is that it is leaking inside.

This idea eliminates these inconveniences,
Next, to explain the structure of one embodiment in detail, a rectangular large chamber 1 is formed using a stainless steel plate, a communication port 3 is cut out on one side, and a connecting cylinder 3' to the water collection pipe 2 is protruded. A water inlet 4 is formed on the other side, and the inside of the large chamber 1 is partitioned by a side plate 6 formed of a stainless steel plate and having a square cross section. A face plate 5 is mounted horizontally to form a passageway 8 and a small chamber 7 connecting the communication port 3 and the valve hole 9, and a bottom plate 10c made of a stainless steel plate.
A positioning circle 10 consisting of stainless steel round bar fences 10a, 10a, . 10 and the float ball valve 11 are accommodated in the small chamber 7 so as to be located directly below the valve hole 9, and the float ball valve 11 is provided so as to be vertically movable.
a, 12a... to form a perforated plate 12, the upper part 12b (first illustration) of this perforated plate 12 is made non-perforated, and the perforated plate 12 is connected to the water inlet 4 with bolts and nuts (not shown). It is removably attached to the In the water draining device buried in the side wall in an upright state, the float ball valve 11 is provided so as to be able to rise and fall freely in the vertical direction.
1 is regulated by the positioning circle 10, so it is possible to move vertically up and down even if the small chamber 7 does not approach the float ball valve 11, that is, even if the distance between the float ball valve 11 and the small chamber 7 is widened. .

Next, the usage and operation of this embodiment will be explained.
A plurality of this embodiment are buried in the lowermost position in 3' at large intervals (for example, 50 m intervals), with the communication ports 3 facing the side soil 14 side and the water passage ports 4 facing the waterway 13 side. Branch pipes 2a, 2a of the water collection pipe 2 made of vinyl chloride...
are connected to each connecting cylinder 3'. The water collection pipe 2 extends upward in several rows, with a large number of holes 2b,
2b... is worn.

When the water level of the water channel 13 is low and there is no water in the small chamber 7, the float valve 11 is placed on the bottom plate 10c due to gravity as shown by the two-dot chain line in FIG. 1, and when a small amount of water is present. According to the amount, the valve hole 9 is located at the position indicated by the dashed line, and therefore the water in the side soil 14 flows through the water collection pipe 2, the connecting cylinder 3', and the connecting cylinder 3' as shown by the arrow in FIG. Through the communication hole 3, the water passage 8, the small chamber 7 from the valve hole 9, and the holes 12a, 12a.
...and flows out into waterway 13. At this time, if the distance between the float ball valve 11 and the small chamber 7 is narrow, only a small amount of water can be drained, but in this embodiment, since the positioning circle 10 is provided, the float ball valve 11 and the small chamber 7
As a result, a large amount of soil water can be drained. In addition, the large chamber 1 of this embodiment has an inner diameter of 60 mm on the waterway side of the conventional small diameter pipe b, an inner diameter of 40 mm on the side earth side, and a float ball valve d.
The diameter is 50mm, while the length is 150mm and the width is 220mm.
The small chamber 7 has a width of 158 mm and a height of 136 mm, and the diameter of the float ball valve 11 is 100 mm. The gap between the valve and the valve hole when the valve is opened is much larger than that of the conventional example. It is formed to a large extent. (The above comparison is between the present example and the conventional example, which are used in water channels of the same size.) If the water level rises now, the hole 1 will move as shown by the solid line arrow in Figure 1.
Water in the water channel 13 enters the small chamber 7 from 2a, 12a, . In addition, when the amount of soil water increases due to heavy rain, etc., the soil water enters the water passage 8 and the closed float valve 11 is pushed down into the water in the small chamber 7 by the water pressure of the soil water. This has been confirmed through experiments.

In this way, this invention provides a small chamber within the large chamber, and a float ball valve regulated by a positioning circle is installed within the small chamber so that it can move up and down in the vertical direction, so when the valve hole is opened, it is possible to maintain a large distance between the small chamber and the small chamber.
Therefore, a large amount of underground water can be drained, and there is no need to install many check valves at small intervals as in the conventional case. This device can be installed at a low cost because it can be connected with a The ball valve moves vertically up and down, tightly adheres to the valve hole due to buoyancy and water pressure, and can be closed securely.Moreover, it has a positioning circle, so it is more reliable, and the upper part of the perforated plate is free of holes. Therefore, it is possible to prevent water pressure from being applied to the float valve from the side of the waterway, which is extremely effective.

[Brief explanation of drawings]

Figures 1 to 3 show examples of this invention.
FIG. 1 is an enlarged longitudinal sectional front view of the installed state, FIG. 2 is a transverse plan view of the same as above, FIG. 3 is a transverse plan view of a state in which a plurality of devices are installed, and FIG. 4 is a longitudinal sectional front view of the conventional example. 1...Large room, 2...Water collection pipe, 3...Communication port, 4
...Water port, 5...Top plate, 7...Small room, 8...
Water passageway, 9... Valve hole, 10... Positioning circle, 11... Float ball valve, 12... Perforated plate.

Claims (1)

[Scope of utility model registration request] A communication port 3 with a water collection pipe 2 is provided on one side of the large chamber 1, and a water passage port 4 is provided on the other side to form a small chamber 7 in the large chamber 1,
A valve hole 9 is provided in the upper plate 5 forming the small chamber 7, and a water passage 8 is formed in the large chamber 1 from the communication port 3 to the valve hole 9 of the upper plate 5. This buried type water drainage device for a waterway side wall is characterized in that a float ball valve 11 is provided in a positioning circle 10 provided directly below so as to be vertically movable, and a perforated plate 12 with a non-porous upper portion is provided in a water passage port 4.