JP2011001790A - Rainwater storage device using concrete frame body - Google Patents

Abstract

An object of the present invention is to provide a concrete frame that reliably prevents expansion of a water-impervious sheet, efficiently conveys concrete frame members constituting the concrete frame in close contact with each other, and assembles the concrete frame. Improve sexiness.
A rainwater storage part 11 formed by wrapping a storage material 11b with a water-impervious sheet 11a so as to be able to store rainwater is installed on the ground, and a concrete frame body 12 containing the rainwater storage part 11 is a concrete frame material. 13 are stacked and connected to each other. The collected rainwater is guided to the rainwater storage part 11 by the inflow pipe 19, and the water supply pipe 23 is connected to the rainwater storage part 11 in order to supply the rainwater usage destination. An overflow pipe 26 is connected to the upper part of the rainwater storage unit 11 in order to discharge overflowing rainwater from the rainwater storage unit 11.
[Selection] Figure 1

Description

  The present invention relates to an apparatus for collecting and storing rainwater flowing down a fence of a building such as a house or a building. More specifically, the present invention relates to a rainwater storage device that prevents the expansion of a water shielding sheet by a concrete frame.

  Conventionally, as this kind of rainwater storage tank, an underground storage tank is known that is buried underground and configured to store water (see, for example, Patent Document 1). In this underground storage tank, the internal storage tank is configured by covering a collection of water-holding materials (storage materials) formed by combining a plurality of water-holding materials (referred to as storage materials in this specification) with a first impermeable sheet. The earth pressure absorbing plate is provided outside the internal storage tank, and the earth pressure absorbing plate is further covered with the second water shielding sheet. In the underground storage tank configured as described above, earth pressure from the surroundings is applied to the second impermeable sheet, the earth pressure absorbing plate absorbs the earth pressure, and earth pressure is directly applied to the first impermeable sheet. To prevent. As a result, even if the second water-impervious sheet is damaged by earth pressure, the first water-impervious sheet is avoided from being damaged, so that leakage of water stored in the internal storage tank can be effectively prevented. It has become.

International Publication No. WO2006 / 001139 (Claim 1, Paragraph [0006])

  In the underground water storage tank shown in the above-mentioned conventional Patent Document 1, the soil prevents expansion of the water shielding sheet due to water pressure in the storage tank. However, when this storage tank is installed on the ground, there is a problem that the storage tank using an inexpensive water shielding sheet such as a synthetic rubber system or a rigid resin system cannot prevent the expansion of the water shielding sheet. It was.

  A first object of the present invention is to provide a rainwater storage device using a concrete frame body in which the concrete frame body can surely prevent the expansion of the water shielding sheet. A second object of the present invention is a concrete frame which can efficiently transport concrete frame members constituting a concrete frame body in close contact with each other, and can improve the assembly workability of the concrete frame body. The object is to provide a rainwater storage device using a body. The third object of the present invention is to provide a rainwater storage device using a concrete frame that can supply rainwater in the upper storage part to the supply destination only by the supply water pressure even if the water level in the lower storage part is lowered. There is. A fourth object of the present invention is to provide a rainwater storage device using a concrete frame that can greenen the upper surface of the device and prevent the upper storage portion from expanding due to covering soil. The fifth object of the present invention is to absorb the impact acting on the lower reservoir, to relieve the pressure acting on the concrete frame from the lower reservoir, and to upper and lower reservoirs in the cold season. An object of the present invention is to provide a rainwater storage device using a concrete frame that can prevent freezing of rainwater inside the unit. The sixth object of the present invention is to provide a rainwater storage device using a concrete frame that can reduce the manufacturing cost by increasing the amount of inexpensive waste materials used and suppressing the expensive storage materials to the minimum necessary. There is to do.

  As shown in FIGS. 1 and 3, the first aspect of the present invention is that the storage material 11b is installed on the ground or installed such that the lower part is buried in the ground and the upper part protrudes to the ground. A rainwater storage portion 11 that is wrapped in 11a so as to be able to store rainwater, and a concrete frame body that is formed by storing the rainwater storage portion 11 and stacking a plurality of concrete frame members 13 in a cross-girder shape and connecting them together. 12, an inflow pipe 19 for leading the collected rainwater to the rainwater storage section 11, a water supply pipe 23 connected to the rainwater storage section 11 for supplying rainwater to a destination, and draining rainwater overflowing from the rainwater storage section 11 This is a rainwater storage device using a concrete frame body that includes an overflow pipe 26 connected to the upper part of the rainwater storage unit 11.

  The second aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 3 and 4, the concrete frame member 12 has recesses 21a and 22a on the upper and lower surfaces of both ends. The frame member main bodies 21 and 22 are formed, and the orthogonal frame member main bodies 21 and 22 are engaged with each other so that the orthogonal frame member main bodies 21 and 22 are connected to each other. It is characterized by.

  3rd viewpoint of this invention is invention based on 2nd viewpoint, Comprising: As shown in FIG.3 and FIG.4, as for the concrete frame material 13, height is the height of frame material main bodies 21 and 22. As shown in FIG. Frame lower end member 14 formed with recesses 14a and 14a on the upper surfaces of both ends, and the lower surface of both ends formed with a height of ½ of the height of frame main bodies 21 and 22, respectively. It further has a frame upper end member 15 in which recesses 15a and 15a are respectively formed.

  The fourth aspect of the present invention is an invention based on the first aspect, and as shown in FIG. 5, it is installed on the ground or the lower part is buried in the ground and the upper part protrudes on the ground. A lower storage part 51 that is installed so as to be able to store rainwater by wrapping the storage material 51b with a water shielding sheet 51a, and is installed on the upper surface of the lower storage part 51 that is smaller than the lower storage part 51 and stores rainwater. And a pump 54 that pumps rainwater stored in the lower reservoir 51 to the upper reservoir 52. The lower reservoir 51 and the upper reservoir 52 are connected to each other through a communication pipe 53. Is provided in the middle of the communication pipe 53, the inflow pipe 19 is connected to the upper storage section 52, the water supply pipe 23 is connected to the upper storage section 52, and the overflow pipe 66 discharges the rainwater overflowing from the upper storage section 52. 1st overrun to the side reservoir 51 And low pipe 66a, and having a second overflow pipe 66b for discharging the rain water overflowing from the lower reservoir 51.

  A fifth aspect of the present invention is an invention based on the first or fourth aspect, and further, as shown in FIG. 1, the upper surface of the exposed rainwater storage part 11 or the upper and lower storage parts exposed. By covering the upper surface with soil 18, the water-impervious sheet 52 a forming the upper storage portion 52 is prevented from expanding due to water pressure, and a plant can be planted in the soil cover 18. To do.

  6th viewpoint of this invention is invention based on 1st or 4th viewpoint, and also has a buffer function and heat insulation function in the lower surface of the rainwater storage part 11 or the lower side storage part, as shown in FIG. A lower protection plate 16 is provided, and a side protection plate 17 having a buffer function and a heat insulation function is provided between the concrete frame 12 and the rainwater storage unit 11 or the lower storage unit.

  A seventh aspect of the present invention is an invention based on the first or fourth aspect, and as shown in FIGS. 1 and 2, in the rainwater storage part 11 or in the lower storage part and the upper storage part. The outer peripheral portion is filled with the storage material 11b, and the interior surrounded by the storage material 11b is filled with the waste material 11c.

  In the apparatus according to the first aspect of the present invention, since the rainwater storage part is housed in a strong concrete frame, even if the water shielding sheet of the rainwater storage part tries to expand due to the rainwater pressure in the storage part, it is made of concrete. The frame can reliably prevent the expansion of the water shielding sheet. In addition, since a cheap water shielding sheet such as a synthetic rubber system or rigid resin system in the rainwater storage part is housed in a strong concrete frame body, the water shielding sheet is not damaged, and rainwater is reliably stored in the rainwater storage part. While being able to store, the manufacturing cost of a rainwater storage apparatus can be reduced. In addition, the concrete frame that accommodates the rainwater storage portion is formed by stacking a plurality of concrete frame materials in a cross-beam shape and connecting them together, so that the concrete frame can be easily assembled without using bolts. . As a result, the assembling workability of the concrete frame can be improved. Furthermore, since the concrete frame material has an elongated plate shape, the concrete frame material can be loaded on the truck in a state of being in close contact with each other. As a result, the concrete frame material can be efficiently conveyed from the factory to the installation site.

  In the apparatus according to the second aspect of the present invention, the orthogonal frame member main bodies are connected to each other by engaging the concave portions of the orthogonal frame member main bodies among the concrete frame members. It can be firmly connected in a cross-beam shape.

  In the apparatus according to the third aspect of the present invention, since the concrete frame material further includes a frame lower end member and a frame upper end member in addition to the frame material main body, the lower surface and the upper surface of the concrete frame body can be flattened. As a result, the entire bottom surface of the concrete frame can be installed in close contact with the ground, and the appearance of the concrete frame can be improved.

  In the apparatus according to the fourth aspect of the present invention, the upper reservoir is located above the ground, rainwater in the lower reservoir is pumped up to the upper reservoir, and a predetermined amount of rainwater is always stored in the upper reservoir. Therefore, even if the water level in the lower reservoir is lowered, the rainwater in the upper reservoir can be supplied from the water supply pipe to the supply destination by the water supply pressure caused by the potential energy of the rainwater in the upper reservoir.

  In the apparatus according to the fifth aspect of the present invention, the upper surface of the exposed rainwater reservoir or the upper surfaces of the exposed upper reservoir and lower reservoir is covered with soil, so that the water shielding sheet forming the upper reservoir is caused by water pressure. Expansion can be prevented. In addition, by planting a plant on the cover soil, the upper surface of the rainwater storage device can be greened, which can contribute to the improvement of the global environment.

  In the apparatus according to the sixth aspect of the present invention, the lower protective material and the side protective material can absorb the impact acting on the lower reservoir, and can relieve the pressure acting on the concrete frame from the lower reservoir. . Further, the lower protective material, the side protective material, and the covering soil can prevent the rainwater in the lower storage portion and the upper storage portion from being frozen in the cold season.

  In the apparatus according to the seventh aspect of the present invention, the outer peripheral portion of the rainwater storage portion is filled with the storage material, and the waste material is filled in the interior surrounded by the storage material. The amount of storage material used can be minimized. As a result, the manufacturing cost of the rainwater storage device can be further reduced. In addition, the outer peripheral portion of the lower storage portion is filled with a storage material, the interior surrounded by the storage material is filled with waste material, and the outer storage portion of the upper storage portion is filled with the storage material, and surrounded by the storage material. Even if the inside is filled with waste material, the same effect as described above can be obtained.

It is a longitudinal cross-section block diagram of the rainwater storage apparatus of 1st Embodiment of this invention. It is the sectional view on the AA line of FIG. It is a perspective view of the concrete frame of the apparatus. It is a disassembled perspective view which shows the state just before assembling the concrete frame. It is a longitudinal cross-sectional block diagram of the rainwater storage apparatus of 2nd Embodiment of this invention. FIG. 6 is a sectional view taken along line B-B in FIG. 5. It is CC sectional view taken on the line of FIG.

Next, an embodiment for carrying out the present invention will be described with reference to the drawings.
<First Embodiment>
As shown in FIG. 1, the rainwater storage device 10 includes a rainwater storage unit 11 installed on the ground and a concrete frame 12 that accommodates the rainwater storage unit 11. The rainwater storage unit 11 is configured to be able to store rainwater falling on the roof or roof of a building such as a house or building. The rainwater storage part 11 is formed by filling the water shielding sheet 11a with a plurality of storage materials 11b and a plurality of waste materials 11c. The water-impervious sheet 11a is a sheet having a water-impervious property such as a synthetic rubber type or a synthetic resin type, and a protective non-woven fabric (not shown) is usually superimposed on both surfaces thereof. The storage material 11b is a plastic molded body formed into a truncated pyramid shape by a mold, and the waste material 11c is a waste pipe. The upper and lower surfaces of the storage material 11b are opened, and a plurality of holes (not shown) are formed on the side surface of the storage material 11b. The waste pipe 11c is formed by cutting a plurality of resin pipes having different diameters such as polyvinyl chloride (PVC) pipes and polypropylene (PP) pipes to a predetermined length. The storage material 11b is filled in the outer periphery of the rainwater storage unit 11, and the waste pipe 11c is filled in the interior surrounded by the storage material 11b. Specifically, a plurality of storage materials 11b are arranged in a rectangular cylinder and stacked to form a rectangular cylinder 11d, and a plurality of waste pipes 11c are arranged in a fixed direction inside the rectangular cylinder 11d. Filled side by side. In addition, as a waste material, you may use waste containers, such as a plastic cup and a basket other than a waste pipe.

The rainwater storage part 11 is accommodated in a concrete frame 12 formed in a rectangular cylindrical shape. The concrete frame 12 is formed by stacking a plurality of concrete frame members 13 in a cross-beam shape and connecting them together (FIGS. 3 and 4). As shown in detail in FIG. 4, the concrete frame member 13 includes first and second frame body bodies 21 and 22 having recesses 21a and 22a formed on the upper and lower surfaces of both ends, respectively, and the height H ₁ is the _first . The frame lower end member 14 is formed to be ½ of the height H ₀ of the first and second frame member bodies 21 and 22 and has recesses 14a formed on the upper surfaces of both ends, and the height H ₂ is the first and _second heights H 2. The frame member main bodies 21 and 22 have a frame upper end member 15 which is formed at a half of the height H ₀ and has recesses 15a formed on the lower surfaces of both ends. The first frame body 21 is a member provided extending in the lateral direction of the concrete frame 12, and the second frame body 22 is a member provided extending in the longitudinal direction of the concrete frame 12. The first frame body 21 is formed longer than the second frame body 22. The first frame member body 21 and the second frame member body 22 are formed at the same height H ₀ , and are formed on the upper and lower surfaces of both ends of the first frame member body 21 and the second frame member body 22, respectively. The depths of the recesses 21 a and 22 a are formed to be ¼ of the height H ₀ of the first frame material body 21 and the second frame material body 22. The frame lower end member 14 is formed to have the same length as the second frame member main body 22, and the depth of the recess 14 a formed on the upper surface of both end portions of the frame lower end member 14 is ₁ of the height H ₁ of the frame lower end member 14. / 2, that is, 1/4 of the height H ₀ of the first frame body 21. Further, the frame upper end member 15 is formed to have the same length as the first frame member main body 21, and the depth of the recess 15 a formed on the lower surface of both end portions of the frame upper end member 15 is 1 of the height H ₂ of the frame upper end member 15. / 2, that is, 1/4 of the height H ₀ of the second frame body 22.

  The thicknesses of the first frame member main body 21, the second frame member main body 22, the frame lower end member 14, and the frame upper end member 15 are formed to be the same, and the widths of the recesses 21a, 22a, 14a, 15a are the same as the first frame member. The main body 21, the second frame material main body 22, the frame lower end member 14, and the frame upper end member 15 are formed slightly larger than the thickness. For example, the length, height, and thickness of the first frame material body 21 are formed to 4500 mm, 440 mm, and 150 mm, and the length, height, and thickness of the second frame material body 22 are formed to 3500 mm, 440 mm, and 150 mm. Is done. The length, height and thickness of the frame lower end member 14 are formed to 3500 mm, 220 mm and 150 mm, and the length, height and thickness of the frame upper end member 15 are formed to 4500 mm, 220 mm and 150 mm. Further, the depths and widths of the recesses 21a, 22a, 14a, and 15a of the first frame member main body 21, the second frame member main body 22, the frame lower end member 14, and the frame upper end member 15 are formed to be 110 mm and 155 mm, respectively. The first frame member main body 21, the second frame member main body 22, the frame lower end member 14, and the frame upper end member 15 are concrete parts manufactured in advance in a factory for assembly at the site, that is, precast concrete parts. In this embodiment, the concrete frame is formed in a rectangular cylinder, but the concrete frame may be formed in a square cylinder. In this case, the first frame material body and the second frame material body can be made the same shape, and the frame lower end member and the frame upper end member can be made the same shape, so the number of precast concrete parts is reduced. can do.

  The concrete frame 12 is installed on the ground. Further, a lower protection plate 16 having a buffer function and a heat insulation function is provided on the lower surface of the rainwater storage section 11, and a side protection plate having a buffer function and a heat insulation function between the concrete frame 12 and the rainwater storage section 11. 17 is provided. The lower protection plate 16 and the side protection plate 17 are made of foamed polystyrene, foamed vinyl chloride or the like. The upper surface of the exposed rainwater storage unit 11 is covered with soil 18, and plants (not shown) such as lawn are planted in the soil cover 18. Furthermore, rainwater falling on the roof or roof of a building such as a house or building is collected in a fence (not shown) and the rainwater is guided to the upper part of the rainwater storage part 11 through the inflow pipe 19. That is, the base end of the inflow pipe 19 is connected to a ridge, and the front end of the inflow pipe 19 passes through the concrete frame 12 and the side protection plate 17 and is inserted into the rainwater storage section 11 from the top surface of the rainwater storage section 11. The

  A base end of a water supply pipe 23 is connected to the lower part of the rainwater storage section 11, and a faucet 24 is provided at the tip of the water supply pipe 23. That is, the proximal end of the water supply pipe 23 is connected to the lower part of each side surface of the rainwater storage section 11, and the distal end of the water supply pipe 23 penetrates the cover 18, the side protection plate 17, and the concrete frame body 12. It protrudes outward and a faucet 24 is provided at the protruding end. In this embodiment, four water supply pipes 23 are provided (FIG. 3). The base end of the overflow pipe 26 is connected to the upper part of the rainwater storage section 11, and the tip of the overflow pipe 26 is bent downward and formed downward. The overflow pipe 26 is provided to discharge rainwater overflowing from the rainwater storage unit 11. Note that the insertion portion of the inflow pipe 19, the water supply pipe 23, and the overflow pipe 26 into the rainwater storage section 11 is sealed by a seal member (not shown) to maintain water tightness. The inflow pipe 19, the water supply pipe 23 and the overflow pipe 26 are configured to be inserted into the storage material 11 b of the rainwater storage section 11. This is to facilitate the construction of each pipe.

  A method for manufacturing the rainwater storage device 10 configured as described above will be described. An elongated plate-shaped concrete frame member 13 is manufactured in advance in a factory, and the concrete frame member 13 is loaded on a truck and transported to an installation site. At this time, since the concrete frame members 13 can be loaded on the truck in close contact with each other, the concrete frame members 13 can be efficiently conveyed from the factory to the installation site. Upon arrival at the installation site, the ground 27 is first compacted with gravel or sand, and then the concrete frame 12 is assembled (FIGS. 3 and 4). Specifically, as shown in FIG. 4, the two frame lower end members 14, 14 are arranged on the ground 27 at a predetermined interval, and the two first frame member bodies 21, 21 are arranged in the two It spans the frame lower end members 14 and 14 and assembles in the form of a cross beam. At this time, the recesses 21a, 21a on the lower surfaces of both end portions of one first frame member main body 21 are engaged with the recesses 14a, 14a on the upper surfaces of one end portions of the two frame lower end members 14, 14, and the other first frame. The recesses 21a and 21a on the lower surfaces of both ends of the material main body 21 are engaged with the recesses 14a and 14a on the upper surfaces of the other ends of the two frame lower end members 14 and 14, respectively. As a result, the two first frame member main bodies 21 and 21 and the two frame lower end members 14 and 14 can be firmly assembled in a cross-beam shape, and the two first frame member main bodies 21 and 21 and the two first frame member main bodies 21 and 21 can be combined. Since the lower surfaces of the frame lower end members 14 and 14 are positioned on the same horizontal plane, the entire lower surface of the concrete frame 12 can be installed in close contact with the ground. Next, the two second frame member main bodies 22 and 22 are stretched over the two first frame member main bodies 21 and 21 and assembled in a cross-beam shape. At this time, the recesses 22a and 22a on the lower surfaces of both ends of one second frame member body 22 are engaged with the recesses 21a and 21a on the upper surfaces of one end portions of the two first frame member bodies 21 and 21, respectively. The recesses 22a and 22a on the lower surfaces of both ends of the two frame member bodies 22 are engaged with the recesses 21a and 21a on the upper surfaces of the other end portions of the two first frame member bodies 21 and 21, respectively. As a result, the two second frame member main bodies 22 and 22 and the two first frame member main bodies 21 and 21 can be firmly assembled in a cross beam shape. By repeating this operation, the first frame member main body 21 and the second frame member main body 22 are stacked in four stages and connected to each other. At this time, no gap is generated between the stacked first frame member bodies 21 and no gap is generated between the stacked second frame member bodies 22. Further, the two frame upper end members 15 and 15 are spanned over the two second frame member main bodies 22 and 22 and assembled in a cross beam shape. At this time, the recesses 15a and 15a on the lower surfaces of both ends of one frame upper end member 15 are engaged with the recesses 22a and 22a on the upper surfaces of one end portions of the two second frame member bodies 22 and 22, respectively. The recesses 15 a and 15 a on the lower surfaces of both end portions of 15 are engaged with the recesses 22 a and 22 a on the upper surfaces of the other end portions of the two second frame member bodies 22 and 22. As a result, the two frame upper end members 15 and 15 and the two second frame member main bodies 22 and 22 can be firmly assembled in a cross beam shape, and the two second frame member main bodies 22 and 22 and the two second frame member main bodies 22 and 22 can be combined. Since the upper surfaces of the frame upper end members 15 and 15 are located on the same horizontal plane, the appearance of the concrete frame body 12 can be improved. Since the concrete frame 12 can be easily assembled without using bolts in this way (FIG. 3), the assembling workability of the concrete frame 12 can be improved.

  In this state, the lower protection plate 16 is laid on the ground inside the concrete frame 12, and the side protection plate 17 is placed along the inner surface of the concrete frame 12. At this time, sand is filled between the concrete frame 12 and the side protection plate 17. This is to prevent as much gap as possible between the concrete frame 12 and the side protection plate 17. Next, the water shielding sheet 11 a for the rainwater storage part 11 is so arranged that its central part covers the upper surface of the lower protective plate 16 and the inner surface of the side protective plate 17 and its outer peripheral part covers the outer peripheral surface of the concrete frame 12. After spreading, a plurality of storage materials 11b are arranged on the water-impervious sheet 11a along the side protection plate 17 to form a rectangular tube 11d, and discarded inside the rectangular tube 11d. The pipes 11c are filled in a certain direction. Then, the outer periphery of the water-impervious sheet 11a is placed on the upper surfaces of the storage material 11b and the waste pipe 11c so as to overlap each other, thereby enclosing the storage material 11b and the waste pipe 11c with the water-impervious sheet 11a. In this way, the rainwater storage part 11 is installed in the concrete frame 12. Since an inexpensive water-impervious sheet 11a such as a synthetic rubber system or a rigid resin system of the rain water storage part 11 is accommodated in the strong concrete frame 12, the rain water storage part 11 is not damaged by the rain water storage part 11 without being damaged. Can be reliably stored, and the manufacturing cost of the rainwater storage device 10 can be reduced. Moreover, since the usage amount of the expensive storage material 11b is reduced and the usage amount of the inexpensive waste pipe 11c is increased in the rainwater storage section 11, the manufacturing cost of the rainwater storage device 10 can be further reduced.

  Next, the inflow pipe 19, the water supply pipe 23, and the overflow pipe 26 are routed to the rainwater storage unit 11. At this time, if holes for inserting these pipes are formed in the concrete frame 12 and the side protection plate 17 in advance, piping work at the construction site can be easily performed. Further, the upper surface of the exposed rainwater storage unit 11 is covered with soil 18, and a plant is planted in the soil 18. Thereby, since the upper surface of the rainwater storage apparatus 10 can be greened, it can contribute to improvement of global environment. The lower protective plate 16 and the side protective plate 17 can absorb the impact acting on the rainwater storage portion 11 and can relieve the pressure acting on the concrete frame 12 from the rainwater storage portion 11. In addition, the lower protection plate 16, the side protection plate 17, and the cover soil 18 can prevent the rainwater in the rainwater storage unit 11 from freezing in the cold season.

  Operation | movement of the rainwater storage apparatus 10 manufactured in this way is demonstrated. The rainwater that has fallen and falls onto the roof or roof of a building such as a house or building is stored in the rainwater storage section 11 through a gutter and an inflow pipe 19. At this time, although the water shielding sheet 11a of the rainwater storage part 11 tries to expand due to the water pressure of the rainwater in the storage part 11, the concrete frame 12 can reliably prevent the water shielding sheet 11a from expanding. On the other hand, when rainwater stored in the rainwater storage unit 11 is used for spraying on garden plants, a hose (not shown) is connected to the faucet 24 of the water supply pipe 23 and the handle of the faucet 24 is operated. Open the water supply pipe 23. Thus, rainwater in the rainwater storage section 11 is scattered from the water supply pipe 23 to the plant through the hose by the water supply pressure caused by the potential energy of rainwater located above the water supply pipe 23 in the rainwater in the rainwater storage section 11. can do.

<Second Embodiment>
5 to 7 show a second embodiment of the present invention. 5-7, the same code | symbol as FIGS. 1-4 shows the same component. In this embodiment, the rainwater storage device 50 includes a lower storage portion 51 installed such that a lower portion is buried in the ground and an upper portion protrudes above the ground, and a lower storage portion formed smaller than the lower storage portion 51. The upper storage part 52 installed in the upper surface of 51 is provided. The lower storage part 51 and the upper storage part 52 are configured to be able to store rainwater falling on the roof or roof of a building such as a house or a building. The lower storage part 51 is formed by filling the water shielding sheet 51a with a plurality of storage materials 51b and a plurality of waste materials 51c, similarly to the rainwater storage part of the first embodiment. The upper storage part 52 is also formed by filling a plurality of storage materials 52b and a plurality of waste pipes 52c in the water shielding sheet 52a, similarly to the rainwater storage part of the first embodiment. In addition, it is preferable to set the volume ratio of the lower side storage part 51 and the upper side storage part 52 to the range of (7: 3)-(10: 2). The above volume ratio was limited to the range of (7: 3) to (10: 2) when (7: 3) (7/3 = about 2.3) or less, the exposed upper reservoir 52 and lower side When filling the upper surface of the storage unit 51, the soil 18 easily flows and it becomes difficult to form a mound for planting a plant, and if it exceeds (10: 2) (10/2 = 5), the lower storage unit This is because the rainwater in 51 must be frequently pumped to the upper reservoir 52, and the upper reservoir 52 becomes too small, reducing the total amount of water stored.

  All of the lower storage part 51 and the lower part of the upper storage part 52 are accommodated in a concrete frame body 12 assembled in the same manner as the concrete frame body of the first embodiment. The concrete frame 12 is installed such that the lower part is buried in the ground and the upper part protrudes above the ground. A lower protective plate 16 having a buffer function and a heat insulation function is provided on the lower surface of the lower storage part 51, and a side part having a buffer function and a heat insulation function is provided between the concrete frame 12 and the lower storage part 51. A protection plate 17 is provided. Furthermore, the upper surfaces of the exposed upper storage portion 52 and lower storage portion 51 are covered with soil 18, and plants (not shown) such as lawn are planted in the cover soil 18.

  Rainwater falling on the roof or roof of a building such as a house or building is collected in a fence (not shown) or the like, and this rainwater is guided to the upper part of the upper storage part 52 through the inflow pipe 19. In other words, the proximal end of the inflow pipe 19 is connected to the tub, and the distal end of the inflow pipe 19 is inserted into the upper storage section 52 from the upper surface of the upper storage section 52. The lower reservoir 51 and the upper reservoir 52 are connected to each other by a communication pipe 53, and an electric pump 54 is provided in the middle of the communication pipe 53. The other end of the communication pipe 53 whose one end is connected to the suction port of the electric pump 54 is inserted into the lower storage part 51 from the upper surface of the lower storage part 51, and the communication pipe whose one end is connected to the discharge port of the electric pump 54. The other end of 53 is inserted into the upper reservoir 52 from the upper surface of the upper reservoir 52. The communication pipe 53 inserted into the lower storage part 51 is provided extending to the vicinity of the bottom surface of the lower storage part 51. Furthermore, the electric pump 54 is installed on the upper surface of the concrete frame 12 and is configured to pump rainwater in the lower reservoir 51 into the upper reservoir 52.

  The base end of the water supply pipe 23 is connected to the lower part of the upper reservoir 52, and the faucet 24 is provided at the tip of the water supply pipe 23. That is, the proximal end of the water supply pipe 23 is connected to the lower part of each side surface of the upper storage section 52, and the distal end of the water supply pipe 23 penetrates the cover soil 18, the side protection plate 17, and the concrete frame body 12. It protrudes outward and a faucet 24 is provided at the protruding end. In this embodiment, four water supply pipes 23 are provided (FIG. 7). The overflow pipe 66 includes a first overflow pipe 66 a that guides rainwater overflowing from the upper storage section 52 to the lower storage section 51, and a second overflow pipe 66 b that discharges rainwater overflowing from the lower storage section 51. The base end of the first overflow pipe 66 a is connected to the upper part of the upper storage part 52, and the tip of the first overflow pipe 66 a is connected to the upper part of the lower storage part 51. The base end of the second overflow pipe 66b is connected to the upper part of the lower storage part 51, and the tip of the second overflow pipe 66b is bent downward after penetrating the side protection plate 17 and the concrete frame 12, and downward. It is formed. Further, a tap water supply pipe 56 is connected to the upper part of the lower storage part 51. That is, the base end of the tap water supply pipe 56 is connected to a water pipe (not shown), and the tip of the tap water supply pipe 56 penetrates through the concrete frame 12 and the side protection plate 17 to the lower reservoir 51. Is inserted into the lower reservoir 51 from the upper surface. An electromagnetic valve 57 (open / close valve) for opening and closing the tap water supply pipe 56 is provided in the middle of the tap water supply pipe 56. The inlet pipe 19, the communication pipe 53, the water supply pipe 23, the overflow pipe 66 (first and second overflow pipes 66 a and 66 b), and the tap water supply pipe 56 inserted into the lower storage section 51 and the upper storage section 52. Is sealed by a sealing member (not shown) to maintain watertightness. Further, the inflow pipe 19, the communication pipe 53, the water supply pipe 23, the overflow pipe 66 (first and second overflow pipes 66 a and 66 b) and the tap water supply pipe 56 are stored inside or on the upper side of the storage material 51 b of the lower storage section 51. It is comprised so that it may insert in the inside of the storage material 52b of the part 52. FIG. This is to facilitate the construction of each pipe. In FIG. 5, the communication pipe 53 is inserted into the waste pipe 51 c of the lower storage section 51, but the communication pipe 53 is actually inserted into the storage material 51 b of the lower storage section 51.

  On the other hand, the lower reservoir 51 is provided with a lower water level sensor 61 that detects the level of rainwater stored in the lower reservoir 51, and the upper reservoir 52 stores in the upper reservoir 52. An upper water level sensor 62 is provided for detecting the level of the rainwater. The detection outputs of the lower water level sensor 61 and the upper water level sensor 62 are connected to the control input of the controller 63, and the control output of the controller 63 is connected to the electric pump 54 and the electromagnetic valve 57 via a drive circuit (not shown). . The upper water level sensor 62 is turned on when the rainwater level in the upper reservoir 52 reaches a predetermined value within the range of 40 to 60%, and is turned off when the water level reaches the predetermined value within the range of 87 to 93%. Configured to do. The lower water level sensor 61 is turned on when the rainwater level in the lower reservoir 51 reaches a predetermined value within a range of 10 to 20%, and when the water level reaches a predetermined value within a range of 30 to 60%. Configured to turn off.

  A method for manufacturing the rainwater storage device 50 configured as described above will be described. First, the ground surface 27 is excavated into a rectangular parallelepiped shape having a predetermined depth, and the bottom surface of the excavated portion is compacted with gravel or sand. A cylindrical concrete frame 12 is assembled in the excavation part. In this state, the lower protection plate 16 is laid on the bottom surface of the excavation portion inside the concrete frame 12, and the side protection plate 17 is placed along the inner side surface of the concrete frame 12. At this time, as in the first embodiment, sand is filled between the concrete frame 12 and the side protection plate 17. Next, the water shielding sheet 51 a for the lower storage portion 51 is arranged such that its central portion covers the upper surface of the lower protective plate 16 and the inner surface of the side protective plate 17 and its outer peripheral portion covers the outer peripheral surface of the concrete frame 12. Then, a plurality of storage materials 51b are arranged on the water-impervious sheet 51a along the side protection plate 17 to form a square cylinder 51d, and the interior surrounded by the square cylinder 51d is formed. The waste pipes 51c are filled in a certain direction. The outer periphery of the water-impervious sheet 51a is placed on the upper surfaces of the storage material 51b and the waste pipe 51c and overlapped, so that the storage material 51b and the waste pipe 51c are wrapped with the water-impervious sheet 51a. In this way, the lower storage part 51 is installed in the concrete frame 12.

  Next, the water-impervious sheet 52a for the upper reservoir 52 has its central portion covering the upper surface of the lower reservoir 51 and the upper inner surface of the side protection plate 17, and its outer peripheral portion covers the outer peripheral surface of the concrete frame 12. After spreading so as to cover, a plurality of storage materials 52b are disposed on the water shielding sheet 52a so as to be slightly smaller than the lower storage portion 51 to form a rectangular tube body 52d. The enclosed pipe is filled with waste pipes 52c in a certain direction. The outer periphery of the water-impervious sheet 52a is placed on the upper surfaces of the storage material 52b and the waste pipe 52c and overlapped with each other, thereby enclosing the storage material 52b and the waste pipe 52c with the water-impervious sheet 52a. In this way, the upper reservoir 52 is installed on the upper surface of the lower reservoir 51. Further, all of the inexpensive water-impervious sheet 51a such as the synthetic rubber system and the rigid resin system of the lower storage part 51 and the lower part of the cheap water-impervious sheet 52a such as the synthetic rubber system and the rigid resin system of the upper storage part 52 are provided. Since it is housed in the strong concrete frame 12, rainwater can be reliably stored in the lower storage portion 51 and the upper storage portion 52 without damaging the water shielding sheets 51a, 52a, and the manufacture of the rainwater storage device 50 is performed. Cost can be reduced. Further, in the lower storage part 51, the usage amount of the expensive storage material 51b is reduced, the usage amount of the inexpensive waste pipe 51c is increased, and the usage amount of the expensive storage material 52b is reduced in the upper storage part 52. Since the amount of use of the inexpensive waste pipe 52c is reduced, the manufacturing cost of the rainwater storage device 50 can be further reduced.

  Next, the electric pump 54 is installed on the upper surface of the concrete frame 12, and the inflow pipe 19, the communication pipe 53, the water supply pipe 23, the overflow pipe 66 (first and second overflow pipes 66a and 66b), and the tap water supply pipe. 56 is routed to the lower reservoir 51 and the upper reservoir 52. At this time, if holes for inserting these pipes are formed in the concrete frame 12 and the side protection plate 17 in advance, piping work at the construction site can be easily performed. Further, the upper surfaces of the exposed upper storage portion 52 and lower storage portion 51 are covered with soil 18, and a plant is planted in the soil cover 18. Thereby, since the upper surface of the rainwater storage apparatus 50 can be greened, it can contribute to improvement of global environment. Further, the soil 18 covering the upper surface of the exposed lower storage portion 51 and the exposed upper surface of the upper storage portion 52 has a function of preventing expansion of the water shielding sheet 52a of the upper storage portion 52 due to water pressure in the upper storage portion 52. Have. Furthermore, the covering soil 18 also has a function of protecting the water shielding sheets 51 a and 52 a of the lower storage portion 51 and the upper storage portion 52. The lower protective plate 16 and the side protective plate 17 can absorb the impact acting on the lower reservoir 51 and can alleviate the pressure acting on the concrete frame 12 from the lower reservoir 51. Further, the lower protection plate 16, the side protection plate 17, and the cover 18 can prevent rainwater in the lower storage portion 51 and the upper storage portion 52 from freezing in the cold season.

  Operation | movement of the rainwater storage apparatus 50 manufactured in this way is demonstrated. Rain water that has fallen and falls onto the roof or roof of a building such as a house or building is stored in the upper storage section 52 through the gutter and the inflow pipe 19, and rainwater overflowing from the upper storage section 52 passes through the first overflow pipe 66a. It is stored in the lower storage part 51 through. At this time, although the water shielding sheet 51a of the lower storage part 51 tries to expand due to the water pressure of rainwater in the storage part 51, the concrete frame 12 can reliably prevent the water shielding sheet 51a from expanding. . On the other hand, when the rainwater stored in the upper storage section 52 is used for spraying on garden plants, a hose (not shown) is connected to the faucet 24 of the water supply pipe 23 and the handle of the faucet 24 is operated. Open the water supply pipe 23. When the rainwater in the upper reservoir 52 gradually decreases and the rainwater level in the upper reservoir 52 decreases to, for example, 80%, the upper water level sensor 62 is turned on, so the controller 63 is based on the detection output of the upper water level sensor 62. The electric pump 54 is turned on. As a result, rainwater in the lower reservoir 51 is pumped to the upper reservoir 52 by the electric pump 54. Then, when the rainwater level in the upper reservoir 52 rises to, for example, 90%, the upper water level sensor 62 is turned off, so the controller 63 turns off the electric pump 54 based on the detection output of the upper water level sensor 62. As a result, the pumping of rainwater from the lower reservoir 51 to the upper reservoir 52 stops. Thus, since the upper storage part 52 always stores a predetermined amount or more of rainwater, a high water level is maintained. As a result, even if the rainwater level in the lower reservoir 51 decreases, the rainwater in the upper reservoir 52 is hose from the water supply pipe 23 by the water supply pressure caused by the potential energy of the rainwater in the upper reservoir 52. Can be sprayed on the plant through.

  On the other hand, when the lower water level sensor 61 detects that the rainwater level in the lower reservoir 51 has decreased to, for example, 20% during the drought period, the controller 63 controls the electromagnetic valve 57 based on the detection output of the lower water level sensor 61. Is turned on and the tap water supply pipe 56 is opened. Thereby, tap water is supplied to the lower storage part 51 through the tap water supply pipe 56. When the tap water level in the lower reservoir 51 rises to, for example, 50%, the lower water level sensor 61 is turned off. Therefore, the controller 63 turns off the electromagnetic valve 57 based on the detection output of the lower water level sensor 61. Thereby, supply of the tap water to the lower side storage part 51 stops. Thus, since the minimum required water (either rain water or tap water or both) is always stored in the lower storage 51, water is always pumped from the lower storage 51 to the upper storage 52. Can do.

  In the first and second embodiments, the concrete frame body is assembled without using bolts by engaging the concave portions of the concrete frame material. After assembling and assembling the concrete frame, bolts may be passed through the stacked frame members and nuts may be screwed together. Thereby, the concrete frame can be further strengthened. Moreover, in the said 1st and 2nd embodiment, although the plant was planted in the covering soil, you may install the panel for photovoltaic power generation above the covering soil. In this case, an angle material or the like is hung on the concrete frame to form a support frame, and a panel for photovoltaic power generation is attached to the support frame at a predetermined angle. Thereby, an electric pump can be driven with the electric power which generate | occur | produced in the panel for photovoltaic power generation, and the rainwater in a lower side storage part can be pumped up by this pump to an upper side storage part. As a result, it is not necessary to supply electric power of the electric pump from another place, and it can be covered by private power generation.

  In the second embodiment, the upper storage portion is formed so that rainwater can be stored by wrapping the storage material and the waste pipe with a water shielding sheet, but the upper storage portion is a storage formed of stainless steel, plastic, or the like. It may be a tank. In this case, when the upper surface of the exposed lower reservoir and the upper surface of the exposed upper reservoir are covered with soil, the amount of soil covering the upper surface of the lower reservoir and the side surface of the upper reservoir is reduced, and this Even if the soil does not have sufficient force to prevent expansion of the upper reservoir due to the water pressure in the upper reservoir, the upper reservoir consisting of a rigid stainless steel or plastic reservoir is retained by the water pressure in the upper reservoir. Expansion of the part can be prevented. In the second embodiment, an electric pump is used as a pump for pumping rainwater in the lower reservoir to the upper reservoir, but a manual pump may be used. In this case, when there is no rainwater in the upper storage tank and rainwater does not come out of the faucet, the rainwater in the upper storage section is held by pumping the rainwater in the lower storage tank into the upper storage tank using a manual pump. The rainwater in the upper reservoir can be supplied from the faucet to the supply destination by the water supply pressure resulting from the energy. Further, in the second embodiment, the upper storage tank is placed directly on the upper surface of the lower storage tank, that is, the lower surface of the water shielding sheet of the upper storage tank is brought into contact with the upper surface of the water shielding sheet of the lower storage tank. However, between the upper surface of the impermeable sheet of the lower storage tank and the lower surface of the impermeable sheet of the upper storage tank, an intermediate protective plate having a cushioning function and a heat insulating function formed of foamed polystyrene or foamed vinyl chloride is interposed. May be. Due to the presence of this intermediate protective plate, the impact acting on the lower reservoir can be buffered, the heat insulation of the lower reservoir can be improved, and the load of the upper reservoir can be applied to the lower reservoir almost evenly. You can also.

DESCRIPTION OF SYMBOLS 10,50 Rainwater storage apparatus 11 Rainwater storage part 11a, 51a, 52a Water shielding sheet 11b, 51b, 52b Storage material 11c, 51c, 52c Waste pipe (waste material)
DESCRIPTION OF SYMBOLS 12 Concrete frame body 13 Concrete frame material 14 Frame lower end member 14a, 15a, 21a, 22a Recessed part 15 Frame upper end member 16 Lower protection plate 17 Side part protection plate 18 Covering soil 19 Inflow pipe 21 1st frame material main body 22 2nd frame Material body 23 Water supply pipe 26, 66 Overflow pipe 51 Lower storage part 52 Upper storage part 53 Communication pipe 54 Electric pump (pump)
56 Tap water supply pipe 66a First overflow pipe 66b Second overflow pipe

Claims (7)

A rainwater storage part that is installed on the ground or has a lower part buried in the ground and an upper part protruding above the ground, and is formed so that rainwater can be stored by wrapping the storage material (11b) with a water shielding sheet (11a) (11) and
A concrete frame body (12) formed by connecting the rainwater storage section (11) and connecting the frames together with a plurality of layers of the concrete frame material (13) stacked in a columnar shape,
An inflow pipe (19) for guiding the collected rainwater to the rainwater storage section (11);
A water supply pipe (23) connected to the rainwater reservoir (11) to supply water to the rainwater usage destination;
A rainwater storage device using a concrete frame comprising an overflow pipe (26) connected to an upper part of the rainwater storage part (11) for discharging overflowing rainwater from the rainwater storage part (11).   The concrete frame material (13) has frame body bodies (21, 22) formed with recesses (21a, 22a) on the upper surface and the lower surface of both ends, respectively, and the frame body bodies (21, 22) orthogonal to each other. The rainwater storage device using a concrete frame according to claim 1, wherein the orthogonal frame member bodies (21, 22) are connected to each other by engaging the recesses (21a, 22a).   The frame member made of concrete (13) is a frame lower end member (14) in which the height is formed to ½ of the height of the frame material body (21, 22) and the recesses (14a) are formed on the upper surfaces of both ends. And a frame upper end member (15) having a height which is ½ of the height of the frame body (21, 22) and a recess (15a) formed on the lower surface of both ends. A rainwater storage device using the concrete frame described. A lower storage that is installed on the ground or has a lower part buried in the ground and an upper part protruding above the ground, and the storage material (11b) is covered with a water shielding sheet (11a) so that rainwater can be stored. Part (51) and an upper storage part (52) that is smaller than the lower storage part (51) and is installed on the upper surface of the lower storage part (51) and can store rainwater,
The lower storage portion (51) and the upper storage portion (52) are connected in communication by a communication pipe (53),
A pump (54) for pumping rainwater stored in the lower reservoir (51) to the upper reservoir (52) is provided in the middle of the communication pipe (53),
An inflow pipe (19) is connected in communication with the upper reservoir (52),
A water supply pipe (23) is connected in communication with the upper reservoir (52),
An overflow pipe (66) discharges overflowing rainwater from the first overflow pipe (66a) for guiding rainwater overflowing from the upper reservoir (52) to the lower reservoir (51) and the lower reservoir (51). The rainwater storage device using the concrete frame body according to claim 1, further comprising: a second overflow pipe (66b).   The upper surface of the exposed rainwater reservoir (11) or the upper surfaces of the exposed upper reservoir (52) and lower reservoir (51) is covered with soil (18) to form the upper reservoir (52). The rainwater storage device using a concrete frame body according to claim 1 or 4, wherein the water sheet (52a) is prevented from expanding due to water pressure, and a plant can be planted in the covering soil (18).   A lower protective plate (16) having a buffer function and a heat insulating function is provided on the lower surface of the rainwater storage section (11) or the lower storage section (51), and the concrete frame (12) and the rainwater storage section (11) or The rainwater storage device using a concrete frame body according to claim 1 or 4, wherein a side protection plate (17) having a buffer function and a heat insulation function is provided between the lower storage section (51) and the lower storage section (51).   The storage material (11b, 51b, 52b) is filled in the outer periphery of the rainwater storage part (11) or the lower storage part (51) and the upper storage part (52), and the storage material (11b, 51b, 52b). The rainwater storage device using the concrete frame body according to claim 1 or 4, wherein the interior surrounded by () is filled with waste material (11c, 51c, 52c).

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