JP3378131B2 - Underground water storage tank structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an underground water storage tank for storing rainwater so that it can be used for washing a car, watering a garden, or flushing a flush toilet. 2. Description of the Related Art Japan is one of the most rainy countries in the world, and the annual rainfall is about 1750 mm / year, the terrain is steep, residential land and roads are paved, and so on. Often spills immediately into the sea through rivers, further limiting the amount of water available and only about 87
Only 0m ^3. Under these circumstances, with the increase in urban areas and the like, water usage has increased, water shortages have worsened, and impervious areas of groundwater have increased, leading to heat islands in cities due to rising surface temperatures. Is also a problem. Under such circumstances, it is sufficient to effectively use rainwater for car washing and garden irrigation without using tap water, and the amount of tap water used can be saved accordingly. From the above, attempts have been made to adopt a structure for storing rainwater so that it can be used effectively in a house. Japanese Patent Laying-Open No. 5-295767 discloses a structure in which a water tank having a large capacity is provided at an appropriate place in a house. [0004] However, the larger the tank for storing rainwater, the more expensive it is, and the space and cost for installing the tank also increase. Then, this invention aims at providing the water storage tank which can be inexpensive with a simple structure. [0005] The present invention uses the following means in order to solve the above problems. That is, both sides of the pipe 15 are covered with cover plates 11 and 12, the ventilation / overflow pipe 20 communicates with the upper part of the cover plates 11 and 12 on one side, and the water collecting / drainage pipe 21 communicates with the lower part.
A horizontal tank 10 is formed by communicating a drain pipe 22 to the lower surface, a plurality of the horizontal tanks 10 are buried underground, and ventilation / overflow pipes 20, water collecting / drain pipes 21, and drain pipes 22 are connected to each other. These are connected at 30, 31, and 32. Embodiments of the present invention will be described with reference to the accompanying drawings. 1 is an overall perspective view of a house provided with an underground water storage tank, FIG. 2 is a plan view of the underground water storage tank, FIG. 3 is a front view thereof, FIG. 4 is a side view thereof, and FIG. 6 is a partial front view and a sectional view showing another embodiment of the horizontal tank, and FIG. 7 is a side view of the lid similarly. A house provided with an underground water storage tank T of the present invention will be described with reference to FIG. The house shown in FIG. 1 is a two-story building, in which an eaves gutter 1 is arranged below the roof R, and rainwater is passed from the eaves gutter 1 through a call gutter below the eaves and a vertical gutter 2 standing upright on the wall. Is introduced into the underground water storage tank T of the present invention. For the use of rainwater stored in the underground water storage tank T,
It can be used for flushing toilets, for watering plants P and kitchen gardens F provided around the house, and for car washing in the parking lot 3. [0008] Since water for watering and planting and cultivation is stored by rainwater in this manner, watering can be performed even when the water is drought, and the use of tap water can be saved because water is not used.
Also, the pavement leading to the parking lot 3 and the terrace 4 on the underground simple water storage tank T are made permeable, and the surrounding block 5 is made permeable so that rainwater can be sufficiently introduced into the soil in rainy weather. Is trying to penetrate. Conventionally, these are not permeable, and in rainy weather, rainwater flows on the surface and flows out to the gutter, so the water retention capacity of the soil is weak,
As soon as the fine weather continued, planting P and the like became drought. The underground simple water storage tank T of the present invention is buried in a part of an outdoor site. In this embodiment, it is buried in the basement of the terrace 4 next to the deck. The underground water storage tank T of the present invention will be described with reference to FIGS. The underground water storage tank T includes a plurality of horizontal tanks 10 and a ventilation / overflow pipe 20 for the horizontal tanks 10.
.. A connecting pipe 30 communicating with 20.
Connecting pipe 31 and pump tank 3 communicating with each other
3, a connecting pipe 32 for communicating the drain pipes 22 with each other. The horizontal tank 10 is, as shown in FIG.
Large-diameter PVC pipe with a diameter of about 20 to 100 cm, VU
A commercially available steel pipe or synthetic resin pipe such as a VP pipe is cut into a pipe 15 in accordance with the length to be buried on the site to form a pipe 15, and disc-shaped lid plates 11L, 11R, 12L on both sides of the pipe 15.
12R is fitted and closed. A vent / overflow pipe 20 is provided at the upper end of the lid plate 11R / 12R on one side (the right side in the present embodiment) so as to protrude outward, and the water collecting / drain pipe 21 is slightly above the lower end on that side. The drain pipe 22 is provided to protrude downward on the lower surface of the pipe 15 on the side thereof, and each pipe communicates with the inside.
And, between the pipe 15 and the lid plates 11 and 12, and between the ventilation / overflow pipe 20, the water collecting / drain pipe 21 and the lid plate 1
1 and 12 and between the pipe 15 and the drain pipe 22 so as not to cause water leakage and to prevent the pipe from being broken at the base thereof.
It is covered and reinforced. Then, the rectifying plate 1 extends horizontally from the lid plate 11 below the water collecting / drainage pipe 21 to the inside of the pipe 15.
6 are protruding. Further, as shown in FIGS. 6 and 7, the horizontal tank 10 'can be constituted by a connection cap 24 provided with a pipe 15' and a pipe for external communication, and a sealing cap (not shown). That is, the connection cap 24 includes the ventilation / overflow pipe 24a, the water collection / drainage pipe 24b, and the drain pipe 2
4c and the current plate 24d are integrally formed by injection molding or the like. One end of the pipe 15 'is inserted into the connection cap 24, and the pipe 15' is fixed with an adhesive or the like to be sealed.・ Overflow pipe 24a, water collection / drain pipe 24
b. A closed cap that can be simply closed without providing the drain tube 24c and the current plate 24d. In this way, the production of the horizontal tank 10 'can be simplified. In order to bury the horizontal tank 10 constructed as described above, as shown in FIGS. 2, 3, and 4, a portion of the site where the underground water storage tank T is installed is first provided so as to be surrounded by the foundation 9. The part surrounded by the foundation 9 is dug up, and horizontal tanks 10, 10... Corresponding to the length between the foundation 9 and the foundation 9 are installed horizontally at a predetermined interval. Therefore, the capacity of the underground water storage tank T is determined by the length and the number of the horizontal tanks 10. The ventilation / overflow pipes 20 projecting from the side surfaces of the horizontal tanks 10
Are connected by connecting pipes 30 to the connecting pipes 3 respectively.
A T-tube 34 is connected to the end of the zero, and the upper end of the T-tube 34 protrudes from the ground so that air can flow therethrough when rainwater flows into or drains into the horizontal tank 10. In addition, air flows in and out so that water flows smoothly. The lower end of the T-tube 34 is open on the ground or communicates with a drainage ditch by a pipe so that when the horizontal tank 10 becomes full, it overflows from the T-tube 34. Are connected by connecting pipes 31 to the water collecting / draining pipes 21 projecting from the side faces of the horizontal tanks 10, respectively. , A pipe 6.6 communicating with other downspouts and tanks, and a pump tank 33.
Insert the water suction port of the pump into the pump tank 33,
The pump is operated so that it can be used for flushing toilet flushing water, sprinkling water, and car washing. The downspout 2 collects rainwater that has fallen on the roof R by the eaves trough 1 (FIG. 1) and is connected via a call gutter. A drain pipe 35 is connected to the lower surface of the pump tank 33. Are connected to a connecting pipe 32, and the other ends of the connecting pipe 32 and the drain pipe 35 are drain grooves. A cock is provided at the other end to discharge the water in the underground water storage tank T and the pump tank 33. The horizontal tanks 10, 10,... And the surroundings are filled with soil, filled up to the height of the foundation 9, and a permeable block is laid thereon to suppress the splash of rainwater. With this configuration, the rainwater that has fallen on the roof R is collected by the eaves gutter 1 and is passed through the call gutter and the vertical gutter 2 to connect the connecting pipe 31 and the water collecting / draining pipes 21. .. through the horizontal tanks 10, 10... At this time, the air in the horizontal tanks 10 is released into the atmosphere via the ventilation / overflow pipes 20, the connecting pipe 30, and the T-shaped pipe 34.
... when the inside is full, it is discharged from the ventilation / overflow pipes 20, 20 ... When the water in the underground water storage tank T is used, the water in the pump tank 33 is sucked up by a pump, and when the water in the pump tank 33 is reduced, the connecting pipe 31 and the collecting / draining pipe 21 are used. The water in the horizontal tanks 10 is replenished via 21. At this time, the water collection / drain pipe 21 is located slightly above the bottom of the tank, and the current plate 16 is provided inside the tank of the water collection / drain pipe 21. Not to inhale. In addition, as the water in the horizontal tank 10 decreases, the ventilation / overflow pipes 20.
.., Air is sucked from the atmosphere via the connecting pipe 30 and the T-shaped pipe 34. As described above, the present invention has the following advantages. In other words, the water storage tank can be easily configured by closing both sides of the pipe with the lid plate, and water absorption and drainage can be easily performed simply by providing ventilation / overflow pipes and water collection / drain pipes on one side of the lid plate. it can. Also,
Commercially available pipes can be cut according to the desired capacity and site to form a horizontal tank,
By increasing or decreasing the number of horizontal tanks according to the size of the site, an underground water storage tank can be configured to suit the house. And
This rainwater can be effectively used as watering for planting, toilet wash water, car wash water, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view of a house provided with an underground water storage tank. FIG. 2 is a plan view of an underground water storage tank. FIG. 3 is a front view of the same. FIG. 4 is a side view of the same. FIG. 5 is a front sectional view of a horizontal tank. FIG. 6 is a partial front view and a sectional view showing another embodiment of the horizontal tank. FIG. 7 is a side view of the lid. [Description of Signs] T Underground water storage tank 10 Horizontal tank 11/12 Cover plate 15 Pipe 20 Ventilation / overflow pipe 21 Water collection / drainage pipe 22 Drain pipe 30/31/32 Connecting pipe

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields investigated (Int. Cl. ⁷ , DB name) E03B 3/03 E03B 11/00 E03B 11/14 B65D 90/00

Claims (1)

(57) [Claims] [Claim 1] Both sides of a pipe are covered with a cover plate, a ventilation / overflow pipe is connected to an upper portion of one side of the cover plate, and a water collection / drainage pipe is connected to a lower portion thereof. A horizontal tank is formed by connecting a drain pipe to the lower surface of the pipe, and the horizontal tanks are buried underground.
An underground water storage tank structure in which ventilation / overflow pipes, water collection / drainage pipes, and drain pipes are connected by connecting pipes.