JP3515029B2 - Water flow duct and water collection tank with this - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention suppresses outflow to the sewer by collecting rainwater collected in a rain gutter of a house or the like and infiltrating it underground, or a tank for collecting rainwater that has penetrated into the surrounding ground. The present invention relates to a water collection tank that is collected and used effectively.

[0002]

2. Description of the Related Art In order to prevent temporary large-scale outflow of rainwater into sewers, it is obligatory by law to establish a regulated pond with a certain capacity and discharge it into the sewers when constructing residential land of a certain size or larger. ing. However, it is not preferable from the viewpoint of effective use of the land that a certain area must be applied to the regulating pond even if the residential land is constructed, and the sales area for the developer also decreases, and even after the installation, residents, especially infants However, there are problems such as the danger of accidents for children. In addition, as urbanization progresses, the city is covered with structures and asphalt, and rain flows directly from the rainwater main to the river, which significantly reduces the water retention capacity of the soil, changes the natural cycle and concentrates due to climate change. The heavy rains and the tendency of light rain became remarkable, and the urban flood and heat island phenomenon,
It is also pointed out that it is the cause of depletion of spring water and subsidence.

[0003]

In order to deal with these problems, an infiltration tank is provided downstream of a rain gutter of a house or the like, and rainwater is infiltrated underground from this infiltration tank to suppress outflow to the sewer. However, because the conventional infiltration tank has a structure that allows it to infiltrate into the ground from its bottom,
There is a problem that the water quality is not purified using the natural purification power of the soil simply by permeating it, and the permeation speed is slower than the lateral permeation.

The present invention improves on this point and provides a water collecting tank which can be collected in the tank in order to effectively utilize the rainwater that has permeated underground or the rainwater that has once permeated into the surrounding ground. It is an object of the present invention to realize the above without causing a decrease in ability due to clogging, and by making it possible to easily recover even when the clogging is blocked.

[0005]

The water duct of the present invention comprises:
An outer plate projecting outwardly in a shape blocking the oblong opening provided on the current water tank side wall, against proximal and top to bottom the bottom of the outer plate is disposed inside of the outer plate lower than the top portion of the outer plate And a plurality of small-diameter water holes are provided at the bottom of the outer plate, and the distance between the outer plate and the weir plate is narrower on the weir plate bottom side than on the weir plate top side. Or a front plate with a horizontally long opening is attached to the horizontally long opening provided on the side wall of the water collection tank, and inside the water collection tank near the lower end of this opening .
The water passage duct is provided with a non-return damper, which is provided with a horizontal rotation shaft on its side and is capable of closing the opening from the side opposite to the attachment surface of the front plate by rotation.

Further, the water collecting tank of the present invention is a water collecting tank which is buried in the ground with its top portion close to the ground surface, and a laterally long side opening is provided at a position above 700 mm from the upper end of the side surface thereof.
The water passage duct having a shape to close the side surface opening is attached to the outside of the side surface opening, or a valve body is provided inside the side surface opening so that water flows only in one direction. It is the above-mentioned water collection tank to which a water bottle is attached.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, water is taken in and out at a position above 700 mm above the ground surface on the side surface of a water collection tank. At this depth, there is abundant oxygen in the ground and bacteria are breeding, so there is a natural purification power for the inflowing water.
Use this purification power to purify rainwater and penetrate it into the ground,
Alternatively, purified water can be collected and used effectively.

[0008]

FIG. 1 is a perspective view showing a water collecting tank of an embodiment of the present invention. 1 is a water collecting tank made of concrete or the like, and 2 is provided at a position above 700 mm from the upper end of the water collecting tank 1 on its side. The laterally long side openings 3 are water passage ducts that are attached to the side openings 2 to allow water to flow in and out between the water collection tank 1 and the surrounding ground.
The planar shape of the water collection tank 1 is, for example, 3 m × 2 m and the depth is 1.5 m.
The lateral opening 2 has a horizontally long shape having a height of 100 mm and a length of 1000 mm and is horizontally provided at a position above 700 mm from the upper end of the water collecting tank 1 at the center of the four surfaces.

Although the water collection tank of the present invention is referred to as a water collection tank for the sake of convenience, it can be used as either a permeation tank for permeating rainwater into the ground to suppress outflow to the sewer or a water collection tank for collecting groundwater from the surrounding ground. Can be used. Hereinafter, the former case will be mainly described. In the former case, the bottom of the water collection tank 1 may be pulled out so that the water can permeate from the bottom, but in the latter case, it is necessary to close the bottom.

FIG. 2 is a partial sectional perspective view showing the vicinity of the water passage duct 3 of the water collecting tank 1 buried in the ground, and FIG. 3 is a side sectional view showing the same portion. However, in FIG. 3, in addition to the configuration shown in FIG. 2, a non-return damper 4 described later is provided. The water duct 3 has an outer shape in which a cylinder is placed horizontally and is vertically halved at the central axis, and a front plate 31 is attached to the split surface.
The front plate 31 is provided with a horizontally long opening 311 over the entire length. A large number of small-diameter water passage holes 321 through which water passes are provided in the vicinity of the bottom of the half-cylindrical outer plate 32. In the inside of the outer plate 32, a weir plate 33 which is also a half cylinder is inserted.
The top of 33 is located at the middle height of the opening 311 of the front plate 31, and the bottom is joined to the front plate 31 at the upper part of the water passage hole 321. Bar 33
The radius of is slightly smaller than that of the outer plate 32, and the weir plate 33 and the outer plate are
The distance from 32 is narrower on the weir plate bottom side than on the weir plate top side, and is the smallest at the water passage hole 321.

When the water level in the water collecting tank 1 exceeds the top of the dam plate 33, water flows down the gap between the dam plate 33 and the outer plate 32 and permeates into the ground through the water passage holes 321 at the bottom. In addition, in order to discharge the water remaining on the upper part of the weir plate 33, it is preferable that the bottom part of the weir plate 33 is also provided with drainage holes 331, for example, at two places on both ends. The space between the weir plate 33 and the front plate 31 is filled with something or the opening is covered to form a weir plate.
Water may not enter the upper part of 33.

The non-return damper 4 is provided with a horizontal rotary shaft 41 inside the water collecting tank 1 near the lower end of the opening 311 of the front plate 31, and rotates the opening 311 to the outside of the water collecting tank 1 , that is, the mounting surface of the front plate. It is a damper that can be closed from the side. The float 42 is attached to the lower end, and the water tank 1
When the water level inside rises, the check damper 4 opens, and when the water level goes down, the opening 311 is blocked from the outside, so that groundwater flows from around the water collection tank 1 through the water passage hole 321 into the water collection tank 1. To prevent backflow. If there is no such possibility, the non-return damper 4 may not be provided.

FIG. 4 is a partial sectional view of the vicinity of the water duct of the water collecting tank in the example of the water duct 3 having a shape different from those of FIGS. This water duct 3 has a trapezoidal cross section whose width decreases from top to bottom, and is an outer plate composed of an inclined swash plate and upper and lower bottom plates.
32 and vertical weir plate 33, and a large number of water holes 32 at the bottom.
1 is provided. When the water level in the water collection tank 1 exceeds the top of the weir plate 33, water flows down the gap between the weir plate 33 and the outer plate 32 and permeates into the ground through the water passage holes 321 at the bottom. Three
Is the same as in.

In the above example, there is a possibility that the surrounding earth and sand may invade into the inside through the water passage hole 321 at the bottom, but the infiltration of gravel can be prevented by making the diameter of the water passage hole 321 sufficiently small. Since the space around the water passage hole 321 is made as small as possible, if a certain amount of earth and sand enters, it will be filled immediately and the inflow resistance will become large, and subsequent intrusion will be difficult. Then, the invaded soil will be washed away if the water flows from the inside to the outside, so it can be easily recovered even if it becomes clogged.

2 and 3, the water duct 3 is fitted into the side opening of the water collecting tank 1, and in FIG. 4, the water duct 3 is attached to the side opening 2 of the water collecting tank 1 so as to be externally attached. is doing. The mounting method is arbitrary, but it is necessary to slightly change the mounting structure of the flange or the like accordingly. Next, FIG. 5 is a cross-sectional view showing a cylindrical water pipe 5 attached inside the side opening 2 of the water collection tank 1, and FIG. 6 is a cross-sectional perspective view showing a part thereof. 51 is provided inside thereof. A disk-shaped partition plate having an opening, 52 is a valve element attached to one side of the opening, and 53 is a sealing material such as rubber provided on the valve seat. A resin pipe such as vinyl chloride can be used as the water passage 5.

One end of the water passage 5 is attached to the side opening 2 of the water collecting tank 1 to control the water flow in one direction. The partition plate 51 needs to have at least one partition having an opening at the top and one partition having an opening at the bottom, and two or more in total.
The one with the opening above regulates the water level of the water flowing over. When the opening is at the bottom, the valve body 52 serves as a check valve to allow water to flow in only one direction. In FIG. 5, the valve body 52 is provided for all of the three partition plates 51, but the valve body 52 may be omitted if the opening is on the top.

FIG. 7 is a sectional view showing an example of a permeation tank in which the water pipe 5 is attached to the inside of the side opening 2. The upper surface of the water collection tank 1 is covered with a concrete cover so as to be flush with the surrounding pavement surface.
It is covered with 11. The water pipe 5 has three partition plates 51a,
51b and 51c are provided, of which the two sheets 51a and 51c on both sides have openings at the bottom and the valve body 52 is attached to the right side, and the central one 51b has the opening at the top.

As shown by the arrow, water enters the water pipe 5 from the left side, opens the valve body of the left partition plate 51a to reach the central partition plate 51b, and when the water level exceeds this height. The water further advances to the right, reaches the partition plate 51b on the right side, opens this valve body, enters the water passage duct 3 and permeates into the ground. Although an example of the infiltration tank has been described above, when the water collection tank of the present invention is used for collecting groundwater in the surrounding ground, the water collection tank 1 is always provided with a bottom, and in the structure shown in FIGS. It can be used as it is without attaching the non-return damper 4. Further, in the structure shown in FIG. 7, the water pipe 5 may be attached with the right and left reversed.
Water enters the water collecting duct 3 through the water passage hole 321 at the bottom and is stored in the water collecting tank 1. Unlike earth and sand, a water passage hole for water
321 There is no intrusion resistance inside. In this case, it is necessary to construct a water supply (mizumichi) in the ground up to the water intake.

It is also possible to attach the water duct of the present invention to, for example, a U-shaped groove or a cell other than the water collecting tank so that the water that has conventionally flowed into the main sewer can be directly permeated into the underground.

[0020]

According to the present invention, the quality of groundwater is improved by infiltration of rainwater underground with water purification, or the amount of clean water used is improved by collecting and utilizing the purified groundwater effectively. It has excellent effects such as reduction.

[Brief description of drawings]

FIG. 1 is a perspective view showing a water collecting tank according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional perspective view showing the vicinity of the water duct of the water collection tank of the present invention buried in the ground.

FIG. 3 is a side sectional view showing the same portion as FIG.

FIG. 4 is a partial cross-sectional view showing the vicinity of a water duct of a water collection tank in an example of the water duct having a shape different from those of FIGS.

FIG. 5 is a cross-sectional view showing a water pipe of the present invention.

FIG. 6 is a cross-sectional perspective view showing a part of a water pipe of the present invention.

FIG. 7 is a cross-sectional view of an embodiment of the present invention showing a permeation tank having a water passage inside.

[Explanation of symbols]

1 water collection tank 2 side opening 3 water duct 4 Non-return damper 5 water passage 11 lid 31 Front plate 32 Skin 33 dam plate 41 rotation axis 42 float 51 Partition board 52 Disc 53 Seal body 311 opening 321 Water passage hole 331 Drainage hole

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-8-319657 (JP, A) JP-B 4-57813 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E03F 1/00 E03B 11/00

Claims (4)

(57) [Claims] 1. A outer plate projecting outwardly in a shape blocking the opening (2) Horizontal provided in the current aquarium side wall (32), is tangent near to the top to the bottom of the outer plate bottom (32) wherein A weir plate (33) arranged inside the outer plate (32) lower than the top of the outer plate (32).
And a large number of small-diameter water passage holes (321) are provided at the bottom of the outer plate (32), and the outer plate (32) and the weir plate (3) are provided.
3) A water duct characterized in that the bottom side of the weir plate is narrower than the top side of the weir plate. 2. A front plate (31) having a horizontally long opening (311) is attached to a horizontally long opening (2) provided on the side wall of the water collecting tank,
A non-return damper (4) capable of closing the opening from the side opposite to the mounting surface of the front plate by providing a horizontal rotating shaft ( 41 ) inside the water collecting tank (1) near the lower end of the opening (311). ) Is attached, the water duct according to claim 1. 3. A water collecting tank (1) which is buried in the ground with its top part near the surface of the earth, 700 mm from the upper end of its side surface.
A laterally long side opening (2) is provided at a higher position, and the water passage duct (3) according to claim 1 or 2 having a shape that closes the side opening (2) is attached to the outside of the side opening (2). A water collection tank characterized by that. 4. The water collection tank according to claim 3, wherein a water passage cylinder (5) is provided inside the side opening (2) to allow water to flow only in one direction by providing a valve body (52) therein. .