JP2016079603A - Rainwater storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rainwater storage tank which stores and discharges rainwater efficiently.SOLUTION: A rainwater storage tank comprises a container for storing rainwater, a first storage area which is the area for storing rainwater in an interior space of the container, a second storage area which is the area for storing rainwater in the interior space of the container, and a partition part arranged in the position in which the first storage area and the second storage area are connected. In the rainwater storage tank, rainwater is stored in any one of the first storage area and the second storage area in the container, and rainwater overflowing the partition part is stored in the other storage area. The rainwater storage tank comprises a discharge part arranged for discharging rainwater overflowing the partition part which is stored.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rainwater storage tank.

  In Patent Document 1, for example, a water tank (1) made of a non-corrosive material in which a large number of outflow holes (2) are arranged vertically and horizontally on the upper side wall surface (1a), at least around the outflow holes (2). A water permeable material (3) is laid in front of the outer wall of the water storage tank (1) and buried underground, and water is supplied to the water storage tank (1) (4) and to the outside of the water storage tank (1). An underground water tank apparatus comprising a pumping means (5) for pumping is disclosed.

  In addition, in Patent Document 2, a side wall with a gentle slope provided at the eaves of a building, a vertical line connected to the horizontal line via a rainwater tank, and an underground connected to the lower end of the vertical line A rainwater pipe, and a water storage tank for storing rainwater from the rainwater pipe. The water storage tank has a drain pipe provided at an upper end of the rainwater to overflow, and the water in the water tank is grounded. And an underground water storage tank for storing rainwater, characterized in that the drainage pipe is connected to a sewage pipe.

  Patent Document 3 is characterized by comprising a water storage tank for storing water and a water-permeable cover plate that closes the upper opening of the water storage tank, and a small through hole is formed in the bottom surface or the lower side surface of the water storage tank. Temporary water storage tanks such as rain water are disclosed.

Japanese Patent Laid-Open No. 9-71987 Japanese Patent Laid-Open No. 10-54062 JP-A-5-106267

  It is an object of the present invention to provide a rainwater storage tank that efficiently stores and discharges rainwater.

  The rainwater storage tank according to the present invention has a plurality of containers for storing rainwater, and an opening that is disposed through the wall portion of the container, and the containers are configured to be detachable from each other. The opening is arranged such that two adjacent containers are connected to each other with the containers connected to each other.

  The rainwater storage tank according to the present invention includes a storage tank for storing rainwater, a first storage area that is an area for storing rainwater among the internal space of the storage tank, and the internal space of the storage tank. Among these, it arrange | positions in the position which adjoins the said 1st storage area | region and the 2nd storage area | region which is an area | region for storing rainwater, and the said 1st storage area | region and the said 2nd storage area | region are connected. And a partition part that is a partition having an opening at a position higher than the floor surface of the storage region, and the storage tank has rainwater in one of the first storage region and the second storage region. And the rainwater that overflows the partition is stored on the other side.

  Preferably, the first storage region and the second storage region are separated from each other, and a wall member that becomes a vertical wall surface is further provided, the storage tank is made of a synthetic resin material, and the storage tank is a substantially rectangular parallelepiped. It is formed in the shape of.

  Preferably, the first storage region further includes a discharge portion arranged to discharge rainwater that has overflowed the partition portion, and the discharge portion stores rainwater that has overflowed the partition portion. And it arrange | positions in either one of the said 2nd storage area | region.

  According to the present invention, rainwater can be efficiently stored and discharged.

It is a figure explaining the structure of a present Example. It is a figure explaining the structure of the rainwater storage tank 1 which concerns on Example 1. FIG. It is a figure which illustrates the structure of the wall body 10 in the rainwater storage tank 1 which concerns on Example 1. FIG. It is a figure explaining the effect | action which stores and discharges the rainwater in the rainwater storage tank 1 which concerns on Example 1. FIG. It is a figure explaining the structure of the rainwater storage tank 1 which concerns on Example 2. FIG. It is a figure which illustrates the structure of the wall body 11 in the rainwater storage tank 1 which concerns on Example 2. FIG. It is a figure explaining the effect | action which stores and discharges the rainwater in the rainwater storage tank 1 which concerns on Example 2. FIG. It is a figure explaining the modification which concerns on embodiment.

  Hereinafter, the configuration of an embodiment according to the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the illustrated examples.

First, the background and outline according to the present embodiment will be described.
In recent years, with increasing awareness of environmental and economic costs, for example, an increasing number of installers install rainwater tanks for storing and using rainwater in their premises. For this reason, rainwater tanks include small rainwater tanks that can be easily installed and rainwater tanks that are buried underground. However, since these rainwater tanks are for the purpose of storing rainwater, if it becomes full, no more rainwater can be stored. For this reason, when heavy rain or the like occurs when the rainwater tank is full, rainwater cannot be further stored, which may be difficult to use for the prevention of urban flood damage.
Therefore, the rainwater storage tank according to the present embodiment is configured to include an area in the rainwater tank that always stores rainwater and an area that temporarily stores an amount that exceeds the amount capable of storing rainwater.

The rainwater storage tank according to the present embodiment is configured to include a plurality of containers for storing rainwater and an opening that is disposed through the wall portion of the container. The rainwater storage tank is disposed so that two adjacent containers are connected to each other in a state where containers that are detachable from each other are connected.
Thus, the rainwater storage tank can be easily transported during construction by selecting a container for storing rainwater as a plurality of containers, and the size of the container can be appropriately selected. Moreover, since a rainwater storage tank arrange | positions in the state which connected the some container mutually, the wall part of each container functions as a reinforcing material in the container for storing rainwater.

Moreover, the rainwater storage tank which concerns on this embodiment is the storage tank for storing rainwater, the 1st storage area | region which is an area | region for storing rainwater among the internal space of a storage tank, and the inside of a storage tank Of the space, it is adjacent to the first storage area and is disposed at a position where the second storage area, which is an area for storing rainwater, and the first storage area and the second storage area are connected. And at least a partition portion which is a partition having an opening at a position higher than the floor surface of the storage area. The rainwater storage tank stores rainwater in one of the first storage area and the second storage area in the storage tank, and stores rainwater that has overflowed the partition in the other.
Moreover, the rainwater storage tank is further comprised including the wall member used as a vertical wall surface, separating the 1st storage area | region and the 2nd storage area | region. Moreover, the storage tank is comprised with the synthetic resin raw material.
Moreover, the storage tank is formed in the substantially rectangular parallelepiped shape. The rainwater storage tank is configured to further include a discharge portion arranged to discharge rainwater that has overflowed the stored partition portion.
In this way, the rainwater storage tank stores rainwater in one of the two storage areas, and stores rainwater in an amount exceeding the storage amount of the one storage area in the other storage area. The rainwater storage tank can secure rainwater used by the installer by always storing rainwater in one storage area, for example, in fine weather. In addition, the rainwater storage tank stores rainwater in an amount greater than the amount stored in one storage area in the other storage area, and discharges the stored rainwater from the discharge section in the rainy weather. Rainwater can be temporarily stored. Therefore, since the rainwater storage tank can suppress the amount of rainwater discharged at a time, for example, an effect of suppressing the occurrence of urban flooding can be expected.

Next, an outline of the present embodiment will be described.
FIG. 1 is a diagram for explaining the configuration of this embodiment.
FIG. 1A is a front view for explaining the outline of the present embodiment, and FIG. 1B is a side view for explaining the outline of the present embodiment.
As illustrated in FIG. 1, the rainwater storage tank 1 includes a storage tank 3, a supply unit 4, a discharge unit 6, and an extraction unit 8.
[Reservoir 3]
The storage tank 3 is an example of a container according to the present invention.
The storage tank 3 is a container for storing rainwater. The storage tank 3 is formed in, for example, a substantially bowl shape, a substantially cylindrical shape, a substantially cubic shape, and a substantially rectangular parallelepiped shape. The storage tank 3 of the present embodiment will be specifically described as an example in which the storage tank 3 is formed in a substantially rectangular parallelepiped shape.
When the storage tank 3 is formed in a substantially rectangular parallelepiped shape, for example, the longitudinal direction is, for example, about 4.8 m to about 5.2 m, and the short side direction is, for example, about 2.3 m to about 2.7 m. For example, the length is about 1 m or less, preferably about 0.3 m to about 0.5 m. Thus, the storage tank 3 is formed in a substantially rectangular parallelepiped so as to reduce the height of the storage tank 3, so that the installer can reduce the depth of excavation when buried in the ground. Therefore, it can be easily constructed. The storage tank 3 may be configured to connect a plurality of containers to each other, or may be configured to divide the internal region of the storage tank 3.
Moreover, the storage tank 3 is comprised with the metal raw material and the synthetic resin raw material, for example. When the storage tank 3 is made of a metal material, it is made of stainless steel, for example. Moreover, when the storage tank 3 is comprised with a synthetic resin, it is formed with a polyethylene resin, a high density polyethylene resin, a fiber reinforced plastic etc., for example. The storage tank 3 of the present embodiment will be specifically described as an example of a case where the storage tank 3 is formed of polyethylene resin. Since the storage tank 3 is made of polyethylene resin, it can be manufactured at low cost and can be further reduced in weight.
Moreover, the storage tank 3 may be comprised with not only a metal raw material and a synthetic resin raw material but concrete, for example. Specifically, the storage tank 3 may be composed of fiber reinforced concrete (FRC) or ultra high strength fiber reinforced concrete (UFC). These fiber reinforced concrete are comprised so that the fiber material comprised, for example with steel, glass, or carbon may be included.

  Moreover, as illustrated in FIG. 1, the storage tank 3 is connected to a supply unit 4 and a discharge unit 6. The storage tank 3 is buried underground and functions as a rainwater storage tank by storing rainwater collected by a gutter (rain gutter) connected to the supply unit 4. Moreover, the storage tank 3 discharges a part of rainwater that cannot be stored out of the stored rainwater into the ground or a drain pipe by the discharge unit 6. Although the storage tank 3 of a present Example demonstrates as an example the case where rainwater is collected from the roofs, such as a building, via a rain gutter, it is comprised so that rainwater may be collected from a road surface, a garden, a parking lot, etc. May be.

[Supply unit 4]
The supply unit 4 is a pipe material that is connected to the storage tank 3. The supply unit 4 is connected to a rain gutter attached to the building, and supplies rain water collected by the gutter to the storage tank 3. Although the supply part 4 of a present Example demonstrates as a specific example the case where it is arrange | positioned at the side surface side of the storage tank 3, you may arrange | position at the top plate surface side of the storage tank 3. FIG.

[Discharge unit 6]
The discharge part 6 is an example of the discharge part which concerns on this invention.
The discharge part 6 is a pipe material connected to the storage tank 3. The discharge unit 6 may be configured to discharge part of the rainwater stored in the storage tank 3 into the ground, or may be configured to discharge to an existing drain pipe or the like. Although the discharge part 6 of a present Example demonstrates as a specific example the case where it arrange | positions at the floor surface side of the storage tank 3, you may arrange | position at the side surface side of the storage tank 3. FIG.

[Taking part 8]
The take-out part 8 is a hole provided on the top plate surface side of the storage tank 3. The extraction unit 8 is configured to be opened and closed using, for example, a lid. The take-out unit 8 is attached by the installer to pump out rainwater stored in the storage tank 3.

[Example 1]
Example 1 demonstrates the case where the storage tank 3 is comprised with the some container 2. FIG.
FIG. 2 is a diagram illustrating the configuration of the rainwater storage tank 1 according to the first embodiment.
Fig.2 (a) is a perspective view which illustrates typically the rainwater storage tank 1, and FIG.2 (b) is a figure which illustrates the YY visual field cross section in the rainwater storage tank 1 of FIG. Moreover, FIG.2 (c) is a figure which illustrates the ZZ visual field cross section in the rainwater storage tank 1 of FIG.
[Container 2]
As illustrated in FIG. 2A, the storage tank 3 is configured by detachably connecting a plurality of containers 2 to each other. In other words, the container 2 constitutes the storage tank 3 by arranging the two adjacent containers to be connected to each other in a state where the containers 2a to 2e are connected to each other. The storage tank 3 detachably connects the respective wall portions of the container 2a and the container 2b, the container 2b and the container 2c, the container 2c and the container 2d, and the container 2d and the container 2e. Moreover, the storage tank 3 has the supply part 4 connected to the container 2a, and the discharge part 6 connected to the container 2e. Moreover, the storage tank 3 has the extraction part 8 arranged in the container 2b.
The container 2 is an example of a container according to the present invention.

[Wall body 10]
As illustrated in FIG. 2B, the wall body 10 is configured by connecting a plurality of containers to each other and connecting the wall surfaces 9 of two adjacent containers to each other. Therefore, the thickness of the wall 10 is about twice that of the wall 9 in the container 2.
Here, in the present Example 1, the wall part which connected the wall surface 9 of the container 2a and the wall surface 9 of the container 2b mutually is used as the wall body 10a, and the wall surface 9 of the container 2b and the wall surface 9 of the container 2c are mutually connected. Let the wall part which was done be the wall 10b. A wall portion connecting the wall surface 9 of the container 2c and the wall surface 9 of the container 2d to each other is a wall body 10c, and a wall portion connecting the wall surface 9 of the container 2d and the wall surface 9 of the container 2e to each other is a wall body 10d. And
In addition, as illustrated in FIG. 2C, these wall bodies 10 are provided with openings 15 that are disposed through the wall bodies 10. The wall body 10 partitions the internal regions of the containers to be connected to each other by arranging the openings 15 so as to connect the internal regions of the adjacent containers that are connected to each other. Therefore, the wall 10 combines the role of partitioning the internal region of the storage tank 3 and the role as the wall surface 9 (wall surface 10) of the containers 2a to 2e. Moreover, the wall body 10 is comprised so that it may become a vertical wall surface, and can endure the load added from the storage tank 3 by arrange | positioning more than one.

[Opening 15]
The opening 15 is an example of an opening according to the present invention.
As illustrated in FIG. 2C, the storage tank 3 has an opening 15 penetrating the wall body 10. The opening 15 is arranged so that two adjacent containers are connected to each other in a state where the containers 2a to 2e are connected to each other. The opening 15 is disposed through each of the wall bodies 10a to 10d connecting the plurality of containers 2a to 2e. Since the opening 15 is disposed through the wall body 10, the areas inside the different containers 2 are connected to each other. The opening 15 adjusts the amount of rainwater supplied to the adjacent containers 2 according to the number and size of the walls 15 arranged in the wall body 10. A plurality of openings 15 may be arranged in the wall body 10 or may be arranged in at least a part. The opening 15 is disposed at a position higher than at least the floor surface of the container 2.

FIG. 3 is a diagram illustrating the configuration of the wall body 10 in the rainwater storage tank 1 according to the first embodiment.
3A is a diagram illustrating an AA view of the rainwater storage tank 1 illustrated in FIG. 2, and FIG. 3B is a view illustrating a BB view of the rainwater storage tank 1 illustrated in FIG. 2. It is a figure illustrated. FIG. 3C is a diagram illustrating a CC view of the rainwater storage tank 1 illustrated in FIG.
As illustrated in FIG. 3A, the wall body 10 b has a plurality of openings 15 arranged on the upper side (the ground side) that is the top plate surface of the container 2 b. The storage tank 3 can store rainwater inside the container 2b up to the position where the opening 15 is disposed by disposing the opening 15 at a position on the top surface of the container 2b in the wall 10b.
On the other hand, as illustrated in FIG. 3B, the wall body 10c is provided with a plurality of openings 15 on the lower side (basement side) which becomes the floor surface (base plate surface) of the container 2c. The container 2c can store rainwater in the container 2c and the container 2d adjacent to each other through the opening 15 by disposing the opening 15 at a position on the lower side of the container 2b in the wall body 10c.
Further, as illustrated in FIG. 3C, the wall body 10d is provided with a plurality of openings 15 spaced apart from each other not only on the upper side of the container 2d but also on the center side or the lower side. Has been. The container 2d can adjust the amount of rainwater supplied to the container 2e according to the amount (water level) of rainwater stored in the container 2d by disposing the openings 15 in the wall body 10d at intervals.
Thus, the wall 10 is provided with the opening 15.

FIG. 4 is a diagram illustrating the action of storing and discharging rainwater in the rainwater storage tank 1 according to the first embodiment.
4A is a diagram illustrating a state in which rainwater is stored in the storage tank 3, and FIGS. 4B, 4C, and 4D store rainwater in the storage tank 3. FIG. It is a figure which illustrates the state which discharges some rainwater.
First, as illustrated in FIG. 4A, rainwater is collected by a rain gutter and stored in the storage tank 3 via a supply unit 4 connected to the gutter.
In the wall body 10a in which the wall surface 9 of the container 2a and the wall surface 9 of the container 2b are connected to each other, rainwater flows into the container 2a and the container 2b through an opening 15 that is disposed through the lower side of the wall body 10a. Stored.
On the other hand, in the wall body 10b in which the wall surface 9 of the container 2b and the wall surface 9 of the container 2c are connected to each other, rainwater does not flow through the opening 15 disposed penetrating above the wall body 10b.
Therefore, rainwater is stored in the container 2a and the container 2b as long as the rainwater does not flow through the opening 15 that penetrates the wall body 10b. The installer can draw out the rainwater stored in the container 2a and the container 2b from the extraction unit 8 and use it. In addition, even if the amount of rainwater stored is small, the installer can easily pump out rainwater only in the container 2a and the container 2b.

Next, as illustrated in FIG. 4B, rainwater is further supplied to the storage tank 3 from FIG.
The rainwater further flows through the opening 15 located on the upper side of the wall 10b by being supplied to the container 2a and the container 2b. The overflowed rainwater is supplied to the container 2c.
In the wall body 10c in which the wall surface 9 of the container 2c and the wall surface 9 of the container 2d are connected to each other, rainwater enters the container 2c and the container 2d through an opening 15 that is arranged to penetrate the wall 10c below. Stored.
On the other hand, in the wall body 10d in which the wall surface 9 of the container 2d and the wall surface 9 of the container 2e are connected to each other, rainwater is disposed at intervals on the upper side, the center side, and the lower side. Of these openings 15, the container 2 c and the container 2 d are supplied to the container 2 e through the opening 15 arranged on the lower side, and discharged from the discharge tank 6 connected to the container 2 e to the outside of the storage tank 3.

Next, as illustrated in FIG. 4C, the rainwater is further supplied to the storage tank 3 than in FIG. 4B.
The amount of rainwater stored in the container 2c and the container 2d is increased by increasing the amount of rainwater supplied to the container 2a and the container 2b from the amount of rainwater supplied from the container 2c and the container 2d to the container 2e. Will increase. Rainwater overflows not only from the opening 15 disposed at the lower position among the openings 15 disposed in the wall 10d, but also from the opening 15 disposed at the central position, so that the container 2c and It is supplied from the container 2 d to the container 2 e and discharged from the discharge unit 6 to the outside of the storage tank 3.

Next, as illustrated in FIG. 4D, the rainwater is further supplied to the storage tank 3 from FIG.
In addition, the amount of rainwater supplied to the containers 2a and 2b increases from the amount of rainwater supplied from the containers 2c and 2d to the container 2e. Rainwater overflows not only from the openings 15 arranged at the center and lower positions among the openings 15 arranged in the wall body 10d, but also from the openings 15 arranged at the upper positions, The container 2 c and the container 2 d are supplied to the container 2 e and discharged from the discharge unit 6 to the outside of the storage tank 3.
Thus, since the rainwater storage tank 1 can store rainwater and discharge a part of rainwater, it can be expected to suppress the amount of rainwater discharged to the outside of the storage tank 3 at a time.

[Example 2]
Example 2 demonstrates the case where it is set as the structure which divides | segments the internal area | region of the storage tank 3. FIG.
FIG. 5 is a diagram illustrating the configuration of the rainwater storage tank 1 according to the second embodiment.
Fig.5 (a) is a perspective view which illustrates typically the rainwater storage tank 1, and FIG.5 (b) is a figure which illustrates the YY visual field cross section in the rainwater storage tank 1 of FIG. FIG. 5C is a diagram illustrating a ZZ field cross section in the rainwater storage tank 1 of FIG.

[Reservoir 3]
As illustrated in FIG. 5A, the storage tank 3 is configured by one tank. Moreover, as illustrated in FIGS. 5B and 5C, the storage tank 3 includes a first storage area 2 s that is an area for storing rainwater in the internal space of the storage tank 3, and Of the internal space of the storage tank 3, it is adjacent to the first storage region 2s and is configured to include a second storage region 2t that is a region for storing rainwater. In the storage tank 3, the wall body 11 is arranged at least at a position where the first storage region 2s and the second storage region 2t are connected. Moreover, the storage tank 3 has also arrange | positioned the wall 11 also to the internal area | region of 2 s of 1st storage areas. Moreover, the storage tank 3 has also arrange | positioned the wall body 11 also to the internal area | region of 2 s 2nd storage area | region. The first storage area 2s is a first storage area according to the present invention, and the second storage area 2t is a second storage area according to the present invention.
In addition, the storage tank 3 has a supply unit 4 connected to the first storage region 2s and a discharge unit 6 connected to the second storage region 2t. Moreover, the storage tank 3 has the extraction portion 8 disposed in the first storage region 2s.

[Wall body 11]
As illustrated in FIG. 5B and FIG. 5C, the wall body 11 is disposed at a position where at least the first storage region 2s and the second storage region 2t in the storage tank 3 are connected. ing. Furthermore, the wall body 11 is also disposed in the inner region of the first storage region 2s, and is also disposed in the inner region of the second storage region 2t.
The wall body 11 has a wall portion 11a configured continuously from the top plate surface to the ground plane surface of the storage tank 3, and a wall surface configured continuously from the top plate surface to the ground plane surface, at least from the floor surface of the storage region. And a partition portion 11b in which the opening 16 is disposed at a higher position.
The wall portion 11a is a wall member according to the present invention, and the partition portion 11b is an example of a partition portion according to the present invention.

As illustrated in FIG. 5B, the wall 11a separates the first storage region 2s and the second storage region 2t. Moreover, the wall part 11a is arrange | positioned also in the internal area | region of the 1st storage area | region 2s, and the internal area of the 1st storage area | region 2s is further separated by the wall part 11a in the arrange | positioned wall body 11. FIG. Moreover, the wall part 11a is arrange | positioned also at the internal area | region of the 2nd storage area | region 2t, and the internal area | region of the 2nd storage area | region 2t is further separated by the wall part 11a in the arrange | positioned wall body 11. FIG. Moreover, the wall part 11a is arrange | positioned so that it may become a perpendicular | vertical wall surface inside the storage tank 3, and two or more are arrange | positioned.
Since the wall 11a is arranged to be a vertical wall, it functions as a rib, for example, and serves as a reinforcing material. Furthermore, a plurality of the wall portions 11a can be configured to withstand a load applied from the ground (for example, the weight of a car or the like).
Moreover, as illustrated in FIG. 5C, the partitioning portion 11b is arranged at a position where the first storage region 2s and the second storage region 2t are connected to partition these regions. Moreover, the partition part 11b is arrange | positioned also in the internal area | region of the 1st storage area 2s, and further partitions off the internal area | region of the 1st storage area 2s by the partition part 11b in the arrange | positioned wall body 11. FIG. The wall body 11 is also disposed in the inner region of the second storage region 2t, and the partition region 11b in the disposed wall body 11 further partitions the inner region of the second storage region 2t. The partition part 11b is arrange | positioned in the position where a mutual area | region is connected through the arrange | positioned opening 16. FIG.

[Aperture 16]
As illustrated in FIG. 5C, the storage tank 3 has an opening 16 penetrating the wall body 11. Specifically, the opening 16 is disposed at a position that becomes the partition portion 11 b in the wall body 11, and is disposed at a position higher than the floor surface of the storage tank 3. The opening 16 adjusts the amount of rainwater to be supplied depending on the number and size of the partitions 11b.

FIG. 6 is a diagram illustrating the configuration of the wall body 11 in the rainwater storage tank 1 according to the second embodiment.
6A is a diagram illustrating an EE field of the rainwater storage tank 1 illustrated in FIG. 5, and FIG. 6B is a diagram illustrating an FF field of the rainwater storage tank 1 illustrated in FIG. 5. It is a figure illustrated. FIG. 6C is a diagram illustrating a GG field of the rainwater storage tank 1 illustrated in FIG.
As illustrated in FIG. 6A, the wall body 11 is disposed at a position where the first storage area 2 s and the second storage area 2 t in the storage tank 3 are connected. Of the wall body 11, the partition 11 b has a plurality of openings 16 arranged on the upper side (the ground side) which is the top plate surface of the storage tank 3. In addition, the wall portion 11a of the wall body 11 functions as a wall. Moreover, since the wall part 11a is contained in multiple in the wall body 11, it functions as a collapse prevention material of the crushing of the storage tank 3 or a top | upper surface board. Moreover, the opening part 16 is not arrange | positioned at the wall part 11a.
As illustrated in FIG. 6B, the wall body 11 is disposed in the inner region of the second storage region 2 t in the storage tank 3. Of the wall body 11, the partitioning portion 11 b has a plurality of openings 16 disposed on the lower side (underground side) serving as the ground plane of the storage tank 3. Further, the wall portion 11a of the wall body 11 functions as a wall. Moreover, since the wall part 11a is contained in multiple in the wall body 11, it functions as a collapse prevention material of the crushing of the storage tank 3 or a top | upper surface board. Moreover, the opening part 16 is not arrange | positioned at the wall part 11a.
Moreover, as illustrated in FIG. 6C, the wall body 11 is disposed in the inner region of the second storage region 2 t in the storage tank 3. For example, the partition 11b of the wall body 11 is provided with a plurality of openings 16 spaced apart from each other not only on the upper side of the storage tank 3, but also on the center side and the lower side. The partition part 11b arrange | positions the opening 16 in the upper side, the center side, and the lower side and the wall 11 from the discharge part 6 according to the amount (water level) of the rainwater stored in the 2nd storage area 2t. The amount of rainwater discharged can be adjusted.
Further, the wall portion 11a of the wall body 11 functions as a wall. Moreover, since the wall part 11a is contained in multiple in the wall body 11, it functions as a collapse prevention material of the crushing of the storage tank 3 or a top | upper surface board. Moreover, the opening part 16 is not arrange | positioned at the wall part 11a.
Thus, the wall 11 is comprised by the wall part 11a and the partition part 11b.

FIG. 7 is a diagram illustrating the action of storing and discharging rainwater in the rainwater storage tank 1 according to the second embodiment.
FIG. 7A is a diagram illustrating a state in which rainwater is stored in the storage tank 3, and FIGS. 7B, 7C, and 4D store rainwater in the storage tank 3. FIG. It is a figure which illustrates the state which discharges some rainwater.
First, as illustrated in FIG. 7A, rainwater is collected by a rain gutter and stored in the first storage area 2s via a supply unit 4 connected to the gutter.
In the partition portion 11b of the wall body 11 disposed at a position where the first storage region 2s and the second storage region 2t are connected, rainwater is disposed penetrating above the partition portion 11b. Therefore, it does not overflow the opening 16. Therefore, rainwater is stored in the first storage region 2s in a range that does not overflow the opening 16 that is disposed penetrating above the partition portion 11b.
Moreover, the installer can draw out and use the rainwater stored in the first storage region 2s from the extraction unit 8.

Next, as illustrated in FIG. 7B, rainwater is further supplied to the first storage region 2s than in FIG. 7A.
The rainwater is further supplied to the first storage area 2s, so that the rainwater crosses the partition portion 11b of the wall 11 arranged at the position where the first storage area 2s and the second storage area 2t are connected. Shed. The overflowed rainwater is supplied to the second storage area 2t.
Moreover, in the partition 11b of the wall 11 which separates the area | region where the discharge part 8 is arrange | positioned among the walls 11 arrange | positioned in the internal area of the 2nd storage area 2t, and this area | region, rainwater is upward Out of the plurality of openings 16 arranged on the side, center side, and lower side, the openings 16 arranged on the lower side are overflowed and discharged from the discharge unit 6 to the outside of the storage tank 3.

Next, as illustrated in FIG. 7C, rainwater is further supplied to the first storage region 2s than in FIG. 7B.
As the amount of rainwater supplied to the first storage region 2 s increases, the amount of rainwater stored in the second storage region 2 t increases from the amount discharged from the discharge unit 8. Since the water level rises due to an increase in the amount of rainwater stored in the second storage region 2t, the rainwater becomes not only the opening 16 disposed at the lower position of the partition 11b but also the center side. It also overflows from the opening 16 arranged at the position and is discharged from the discharge portion 6 to the outside of the storage tank 3.

Next, as illustrated in FIG. 7D, rainwater is further supplied to the first storage region 2s than in FIG. 7C.
The amount of rainwater stored in the second storage region 2t increases by being stored in the first storage region 2s. Rainwater overflows and is discharged not only from the openings 16 arranged at the center and lower positions among the openings 16 arranged in the wall body 11 but also from the openings 16 arranged at the upper positions. It is discharged from the part 6 to the outside of the storage tank 3.
Thus, since the rainwater storage tank 1 can store rainwater and discharge a part of rainwater, it can be expected to suppress the amount of rainwater discharged to the outside of the storage tank 3 at a time.

As described above, the rainwater storage tank 1 according to the present embodiment is configured such that the storage tank 3 is configured to be detachable by a plurality of containers 2, so that the storage tank 3 fits the size of the storage tank 3 that the installer wants to install. The size of 3 can be changed as appropriate. Moreover, the rainwater storage tank 1 can be made lightweight by comprising the storage tank 3 with a synthetic resin, and can be manufactured further cheaply.
Moreover, the rainwater storage tank 1 becomes easy to convey at the time of construction by making the storage tank 3 into a plurality of containers. Moreover, the rainwater storage tank 1 can make the depth of excavation for embedding the storage tank 3 shallow by comprising the storage tank 3 in a substantially rectangular parallelepiped and making the height of the storage tank 3 low. , The installer becomes easy to install.

Moreover, the rainwater storage tank 1 comprises the storage tank 3 by one tank, and among the internal space of the storage tank 3, the 1st storage area 2s and 2nd storage area 2t which are areas for storing rainwater And the partition portion 11b included in the wall body 11 is disposed at a position where these two regions are connected. In addition, the rainwater storage tank 1 stores rainwater that has overflowed from the first storage region 2s through the partition portion 11b in the second storage region 2t, and the rainwater stored in the second storage region 2t from the discharge unit 6. Discharge. As described above, the rainwater storage tank 1 can temporarily store rainwater overflowed from the first storage region 2s in the second storage region 2t. Therefore, since the rainwater storage tank can suppress the amount of rainwater discharged at a time, for example, an effect of suppressing the occurrence of urban flooding can be expected.
In addition, the rainwater storage tank 1 can preferentially store rainwater from the first storage area 2s, which is an area in which rainwater is always stored, and further from the first storage area 2s to the second storage area 2t. The overflowed rainwater can be naturally discharged outside the storage tank 3.

Moreover, since the rainwater storage tank 1 is divided by the wall part 11a of the wall body 11 inside the storage tank 3, and is partitioned by the partition part 11b of the wall body 11, the rainwater stored in the 1st storage area 2s Even when the amount of water is small, the water level of the stored rainwater can be stored in a high state. Therefore, the rainwater storage tank 1 can be stored in a state in which the rainwater stored by the installer can be easily drawn out.
Moreover, the rainwater storage tank 1 can be comprised so that the load from an upper part may be endured by arrange | positioning the wall part 11a arrange | positioned vertically inside the storage tank 3. FIG.
As mentioned above, although embodiment which concerns on this invention was described, it is not limited to these, A various change, addition, etc. are possible within the range which does not deviate from the meaning of invention.

[Modification]
Next, a modification according to the present embodiment will be described.
FIG. 8 is a diagram illustrating a modification according to the embodiment.
FIG. 8A is a diagram illustrating a modification according to the second embodiment, and FIG. 8B is a cross-sectional view illustrating the inside of the storage tank 3 illustrated in FIG.
In this modification, the storage tank 3 of the second embodiment will be described as an example, but the storage tank 3 of the first embodiment can also be used.
As illustrated in FIG. 8A, in this modification, a case where the blocking plate 22 is disposed in the storage tank 3 will be described.
The blocking plate 22 is formed in a plate shape, for example, and is disposed so as to block the opening 16 disposed inside the storage tank 3. Specifically, as illustrated in FIG. 8B, the blocking plate 22 is disposed so as to block the partition portion 11 b so that rainwater that overflows the second storage region 2 t is not discharged from the discharge portion 6. Yes. In this example, the blocking plate 22 blocks the opening 16 except for the opening 16 on the upper side which is the top plate surface in the partition portion 11b. The storage tank 3 is configured to store rainwater in the second storage region 2t and prevent the rainwater from overflowing from the storage tank 3 by blocking a part of the opening 16 of the partition portion 11b by the blocking plate 22. Can do.
The blocking plate 22 can store rainwater also in the second storage region 2t by closing the opening 16 in the partition portion 11b. Moreover, the installer can discharge the rainwater stored in the second storage region 2t by removing the blocking plate 22 from the storage tank 3.
Thus, the rainwater storage tank 1 can store rainwater not only in the first storage area 2 s but also in the second storage area 2 t by arranging the blocking plate 22 in the storage tank 3.

  Moreover, as illustrated in FIG. 8A, the rainwater storage tank 1 may be configured such that the window portion 20 is disposed in the storage tank 3. The installer can check and clean the inside of the storage tank 3 by arranging the window portion 20 in the storage tank 3.

DESCRIPTION OF SYMBOLS 1 Rain water storage tank 3 Storage tank 2a-2e Container 4 Supply part 6 Discharge part 8 Extraction part 9 Wall surface 10 11 Wall body 11a Wall part 11b Partition part 15, 16 Opening 2s 1st storage area 2t 2nd storage area

Claims (4)

A plurality of containers for storing rainwater;
An opening disposed through the wall portion of the container;
The containers are configured to be detachable from each other,
The said opening part is arrange | positioned so that the two said adjacent containers may mutually connect in the state which connected the said containers mutually. A storage tank for storing rainwater;
Of the internal space of the storage tank, a first storage area that is an area for storing rainwater;
Of the internal space of the storage tank, a second storage region that is adjacent to the first storage region and is a region for storing rainwater;
A partition that is disposed at a position where the first storage area and the second storage area are connected, and is a partition having an opening at a position higher than the floor surface of the storage area;
The storage tank stores rainwater in one of the first storage area and the second storage area, and stores rainwater that has overflowed the partition in the other rainwater storage tank. The first storage region and the second storage region are separated, and a wall member that becomes a vertical wall surface further has,
The storage tank is made of a synthetic resin material,
The rainwater storage tank according to claim 2, wherein the storage tank is formed in a substantially rectangular parallelepiped shape. A discharge part arranged to discharge rainwater overflowing the partition part;
The rainwater storage tank according to claim 3, wherein the discharge unit is disposed in one of the first storage region and the second storage region that stores rainwater that has overflowed the partition.

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