JP2003105810A - Rainwater feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rainwater feeder, by which rainwater can be utilized effectively in consideration of the environment actually even in a detached house in which an installation space is limited and which is also executed simply. SOLUTION: In a reclaimed water feeder composed of a rainwater tank in which rainwater collected by a rainwater collecting means is stored, a supply means supplying a recycling apparatus such as a stool, water sprinkling or the like with water stored in the rainwater tank and piping connecting the rainwater tank and the recycling apparatus, the rainwater tank and a rainwater infiltrating pit, which has water permeable holes in either one or both of a side wall section and a bottom wall section and in which at least a part is buried into a ground, are connected through rainwater feed piping.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention can store and reuse domestic wastewater such as rainwater and bathtub water in a detached house, for example, and can penetrate underground if rainwater exceeds the storage capacity. The present invention relates to a rainwater supply device that can be used as both water and water.

[0002]

2. Description of the Related Art Conventionally, rainwater infiltration basins that promote underground infiltration of rainwater are used to reduce the load on the sewer due to inflow of rainwater, reduce flood damage on floors when rainfall exceeds the allowable amount, and reduce damage from river floods, and groundwater resources. For the purpose of securing, the installation is being promoted by local governments such as the national government and prefectures. Also, for household wastewater such as rainwater and bathtub water, a device and system intended to purify and store water once it is used for cleaning toilet bowls, sprinkling water, washing cars, etc., in order to raise awareness of water saving. Have been proposed. It is recommended that each of these rainwater infiltration basins and water storage tanks be installed for the purpose of effectively recycling rainwater, bathtub water, etc. in consideration of the living environment.

[0003]

[Problems to be Solved by the Invention] However, regarding rainwater infiltration basins, local governments etc.
Although the installation is being promoted, there is no visible merit at the household level in terms of its performance, so active installation has not been implemented.

Regarding the water tank for storing rainwater,
Since it is necessary to remove the first distillate of rainwater from the surface of the water, it is necessary to install a rainwater branch pipe in the middle of the gutter pipe and to add concrete etc. as a foundation to secure the water storage tank safely. is there. Furthermore, considering the water quality level, rainwater and bathtub water are stored in separate tanks, and a system with specifications suitable for each application is also proposed,
Due to the installation space problem, each of these has a limited tank capacity, so when a large amount of rain falls, it is often drained to the sewer for rainwater without using most of the rain. Construction load such as with sewer was generated.

An object of the present invention is to provide a rainwater supply device that enables effective use of rainwater in a truly environmentally friendly manner even in a detached house where the installation space is limited, and that construction is simple.

[0006]

[Means for Solving the Problems and Actions / Effects] In order to solve the above problems, a rainwater tank for storing rainwater collected by the rainwater collecting means, and water stored in the rainwater tank are provided.
A supply means for supplying to a reusable device such as a toilet bowl or sprinkler, and a middle water supply device comprising a pipe connecting the rainwater tank and the reusable device, wherein the rainwater tank, one of a side wall part and a bottom wall part Alternatively, it is characterized in that a rainwater infiltration basin, which has water-permeable holes in both of them and at least a part of which is buried in the ground, is connected through a rainwater supply pipe.

By connecting the rainwater tank and the rainwater infiltration basin via the rainwater supply pipe in this manner, even if the rainwater tank is installed in a narrow space and overflows easily when the amount of rainfall is large. Since the overflow water can be treated by the rainwater infiltration basin, the construction is simplified without the need to connect the rainwater to the sewer pipe, and part of the overflow water flows into the sewer pipe. Even so, the amount of sewage treatment can be reduced because the total amount is reduced.

Further, the side wall portion of the rainwater infiltration basin has an inflow-side introduction portion that communicates with the rainwater collection means and a discharge-side introduction portion that communicates with the rainwater tank. It is characterized in that the introduction portion on the side is connected by a pipe having a lead-out hole.

As described above, by connecting the inflow-side introduction section and the discharge-side introduction section with the pipe having the derivation hole, when the flow rate of rainwater flowing into the rainwater infiltration basin is small, most of the rainwater is discharged. The water is drained from the lead-out hole of the pipe, and then drained into the ground through the water-permeable holes provided in the side wall portion or the bottom wall portion of the rainwater infiltration basin. On the contrary, when the flow rate of the inflowing rainwater is equal to or more than a certain value, the amount of drainage from the introduction portion on the discharge side of the side wall portion is larger than the amount of drainage from the outlet of the pipe.

When rainwater is used in ordinary households through a rain gutter, a large amount of solid matter such as dust and leaves accumulated on the roof is mixed in the rainwater at the beginning of rainfall, and the organic matter concentration is further increased. Is also known to be expensive. In addition, the effect of acid rain is also strong, and it is known that the pH of rainwater at the beginning of rainfall shifts to the acid side as compared with the rainwater after that.

Therefore, by using the rainwater infiltration basin having the above-described structure, it becomes possible to obtain safe rainwater from the introduction portion on the discharge side while avoiding the influence of these initial rainwater, and the rainwater infiltration basin, which has been small in number until now, can be obtained. The installation merit can also be solved in terms of improving the quality of the stored rainwater.

Further, an overflow port provided in the rainwater tank is connected to an inlet portion of the rainwater infiltration basin on the inflow side, and the rainwater tank is disposed above the rainwater infiltration basin. And

As described above, by installing the water storage tank having the overflow port connected to the inlet portion of the rainwater infiltration basin at the upper portion of the rainwater infiltration basin, the concrete such as the concrete required for fixing the water storage tank has been installed. It is possible to use the frame as a rainwater infiltration basin. As a result, the workability can be improved by reducing the installation space.

A rainwater tank for storing household wastewater such as bath water is provided independently of the rainwater tank in the rainwater supply device, and rainwater from the rainwater tank flows into the rainwater tank. The both tanks are connected via a non-returnable means.

As described above, since both tanks are connected to the intermediate water tank through the non-return means capable of flowing rainwater from the rainwater tank, the amount of rainfall is large and the rainwater is rainwater tank. If it exceeds the capacity of, the rainwater can be poured into the intermediate water tank. Therefore, it is possible to reduce the amount of rainwater to be discarded, and it is also possible to minimize the capacity of the rainwater tank itself. Also, rainwater with different water quality,
It is possible to store miscellaneous wastewater such as remaining hot water in the bathtub, rinsing water for washing, and toilet water in different containers, and it is possible to select different reuse destinations for each. Here, it is observed that the water quality is, for example, that the number of contaminated bacteria in rainwater is significantly smaller than that in other domestic wastewater, and that the concentration of contaminated organic substances is similarly small. Therefore, as the reuse destination of rainwater, it is possible to use the reused water, such as car washing, where the users of the reused water have a relatively large chance of contacting each other.
Recycling sources for household wastewater include toilet flush water. As described above, since the reuse destinations of the water in the water storage tanks are different, it becomes possible to apply the purifying means to the rainwater and the domestic wastewater that have been stored once according to their respective uses, and more safely and It is possible to effectively use recycled water such as rainwater.

In addition, in the rainwater tank, rainwater and well water injection paths are independently provided.

As a result, rainwater and well water can be separately treated in the rainwater tank and then poured into the tank. In particular, as in this specification, when rainwater is once discharged into the ground through a rainwater infiltration basin, it is possible to secure a stable water resource at each household level by pumping the drainage water as well water again. It will be possible.

Further, in the middle water tank, an injecting passage for domestic waste water such as bath water and clean water is independently provided.

As described above, by providing the clean water injection passage in addition to the injection passage for injecting the domestic wastewater such as bath water into the intermediate water tank, even if the domestic wastewater is not supplied to the intermediate water tank,
Stable water can be sent to the reused equipment.

Further, the rainwater inflow passage connecting the rainwater tank and the medium water tank is provided with a passage opening / closing means for opening the water level of the medium water tank below a predetermined water level. And

Therefore, the rainwater is poured into the medium water tank only when the medium water tank is not full, so that it is possible to prevent the rainwater from being normally mixed into the medium water tank. As a result, since the drainage from the middle water tank is usually limited to domestic wastewater, it becomes possible to connect the overflow destination to the sewer. In other words, it becomes possible to reduce the load on the sewer treatment by the sewer drainage of rainwater.

The rainwater tank and the medium water tank have the same capacity.

As described above, by designing the rainwater tank and the medium water tank to have the same capacity, both tanks can be manufactured by using exactly the same mold, and the initial cost for manufacturing can be reduced. Also, by designing the height and depth of the rainwater tank and the medium water tank to be the same, the construction is simplified and the appearance after installation is also improved.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a rainwater supply device according to the present invention, which includes a rainwater tank 1 for temporarily storing rainwater and well water, and a medium water tank 2 for temporarily storing household wastewater such as bathtub water. Rainwater infiltration basin 3 that separates rainwater flowing from rain gutter 4 into underground infiltration and rainwater supply pipe 5, rainwater supply pipe 5 that is a water source on the rainwater tank side, well water supply pipe 6, and rainwater tank internal water A rainwater pipe 13 for supplying the recycle equipment to the reuse equipment, a middle water supply pipe 7 serving as a water supply source on the side of the middle water tank, a clean water supply pipe 8, and a middle water pipe 14 for supplying the water in the middle water tank to the reuse equipment. A rainwater connection pipe 9 that connects the rainwater tank 1 and the medium water tank 2 and an overflow pipe 15 of the medium water tank.

The rainwater collected through the rain gutter 4 is once supplied to the rainwater infiltration basin 3, and a part of the rainwater is supplied to the ball tap 11 in the rainwater tank 1. Further, well water separately collected is also supplied to the ball tap portion 11. The water in the rainwater tank 1 sampled in this way is supplied from the rainwater pipe 13 to rainwater and well water recycling equipment via a separate supply means. At this time, examples of the reuse device include a water sprinkler device and a car wash device.

When the amount of water stored in the rainwater tank 1 reaches the connection position of the rainwater connection pipe 9, the water in the rainwater tank 1 is supplied to the ball tap 12 of the intermediate water tank 2 via the rainwater connection pipe 9. It The water in the intermediate water tank 2 is separately supplied through a supply means,
It is supplied from the medium water pipe 14 to the medium water reuse device. At this time, the reusable device may be a toilet bowl or the like.

Normally, when the amount of rainwater or well water supplied from the rainwater supply pipe 5 does not exceed the storage capacity of the rainwater tank 1, or even when rainwater or well water is supplied to the middle water tank 2, the storage of the middle water tank 2 When the capacity is sufficient, the gray water tank 2 is supplied with gray water such as bath water from the gray water supply pipe 7. Further, when neither rainwater nor gray water is supplied to the gray water tank 2 and the amount of water is equal to or less than a certain amount, this can be detected by a ball tap (not shown) and a predetermined amount of tap water can be fed. . As a result, a constant amount of water is always secured in the middle water tank 1, so that the toilet flush water can always be supplied from this device.

When the amount of water supplied from the rainwater connection pipe 9 to the intermediate water tank 2 exceeds a certain value, the ball tap 12 serving as the flow path opening / closing means is actuated to allow rainwater and wells to enter the intermediate water tank 2. Stop water supply. After that, when the amount of water supplied from the rainwater supply pipe 5 to the rainwater tank 1 exceeds a certain value, the ball tap 11 is operated to stop the supply of rainwater and well water. In this case, excess rainwater is discharged into the ground through the rainwater infiltration basin 3.

In addition, after the supply of rainwater and well water is stopped by the operation of the ball taps 12 in the intermediate water tank 2, when excessive domestic wastewater such as bath water is supplied by the intermediate water supply pipe 7. The drainage water is drained to the sewer through the overflow pipe 15 provided in the drainage tank 2.
Further, even when the surplus water is supplied in this manner, the ball tap 12 and the check valve 1 provided in the rainwater connection pipe 9 are provided.
With the action of 0, no intermediate water is mixed in the rainwater tank 1. Since the rainwater from which the initial flow water is removed has a lower number of organic substances and bacteria than the graywater in terms of water quality, it is suitable for reuse equipment by preventing the graywater from mixing into the rainwater tank 1 by the above-mentioned action. It becomes possible to supply recycled water.

The ball tap 12, which serves as a flow path opening / closing means that functions as a means for limiting water supply from the rainwater tank 1 to the medium water tank 2 and for preventing backflow from the medium water tank 2 to the rainwater tank 1,
Also, other mechanical control means may be used as an alternative to the check valve 10. For example, an electric valve, a flow meter, or a pressure gauge (not shown) may be provided in the rainwater connection pipe 9, and the opening / closing operation of this electric valve may be controlled by the flow meter or the pressure gauge. In this case, even if the normally closed electric valve is used, the electric valve is opened only when the flow meter or the pressure gauge measures a predetermined value or more, and closed when the flow meter or the pressure gauge measures a predetermined value or less. Good. Also,
As another valve control means, pressure gauges may be provided at the bottoms of the rainwater tank 1 and the medium water tank 2, and the valve opening / closing operation may be controlled based on the measured values. In this case, when the pressure measurement value of the rainwater tank 1 is a certain value or more, the electric valve is opened, and when the pressure measurement value of the medium water tank 2 is a certain value or more, it is closed. Has priority,
Such a form may be used.

FIG. 2 is a schematic view of the rainwater infiltration basin 3. In this way, by connecting the inflow-side introduction part and the discharge-side introduction part of the rainwater infiltration basin 3 with the pipe having the derivation hole 17, the rain gutter 4
Among the rainwater collected through the rainwater, the rainwater having a relatively small flow rate in the early stage of the rainfall is provided through the outlet hole 17 on one or both of the side wall portion and the bottom wall portion of the rainwater infiltration basin 3. Water is discharged into the ground through the water-permeable holes 18. After that, when the amount of rainfall increases and the flow rate of water from the gutter 4 increases, a part of the rainwater is discharged into the ground through the outlet hole 17 and the water permeation hole 18, but most of it is discharged. It passes through the outlet 17 and is supplied to the rainwater tank 1 via the rainwater supply pipe 5. In this way, by using the rainwater infiltration basin 3 in which the amount of rainwater supplied to the rainwater supply pipe 5 differs depending on the amount of rainfall, it is effective to mix the first-run rainwater containing a large amount of solid foreign matter into the rainwater tank 1. It is possible to prevent it. Further, the purification capacity of the rainwater according to this configuration can be finely adjusted by changing the hole diameter of the outlet hole 17. Regarding this hole diameter adjustment, it is necessary to add the roof area of each home, the amount of rainfall, and the required water quality of the reuse equipment side, so add a plate material etc. in the piping route and manually A form that allows fine adjustment is desirable. Further, as an alternative to the connection pipe having the lead-out hole 17, a mode in which a cylindrical mesh is used is conceivable, but in any of the specifications, the lead-out hole 1
It is desirable that the rainwater infiltration basin itself be installed on the ground surface as much as possible, and that the piping part and the mesh cylinder part be easily removable.

FIG. 3 shows an embodiment in which the rainwater infiltration basin 3 is used as a mount for the rainwater tank 1. In this case, the rainwater supplied from the rainwater supply pipe 5 to the rainwater tank 1 is poured into the intermediate water tank 2 via the rainwater connection pipe 9 when a certain amount of water is reached. Here, as in the series of operations shown in FIG. 1, when the rainwater in the intermediate water tank 2 reaches a certain amount, it is stopped by the operation of the ball tap 12. Rainwater supply pipe 5
Therefore, when the water supply exceeds the capacity of the rainwater tank 1, surplus rainwater passes through the rainwater drain pipe 16 and the rainwater infiltration basin 3
Is poured into. Rainwater injected into the rainwater infiltration basin 3 is shown in Figure 2.
Water will be discharged into the ground through the water-permeable holes 18 shown in FIG. However, when heavy rain exceeding the normal level injects rainwater that exceeds the underground water discharge capacity of the rainwater seepage basin 3, it is also connected to the intermediate water tank 2 from the introduction part provided on the discharge side of the rainwater seepage basin 3. Water is discharged via the overflow pipe 15.

In FIG. 3, the rainwater infiltration basin 3 is used only as a mount for the rainwater tank 1, but the rainwater infiltration basin 3 may be similarly installed in the lower portion of the intermediate water tank 2 not shown. . In this case, the introduction part on the discharge side of the rainwater infiltration basin 3 disposed in the rainwater tank 1 is connected to the introduction part on the inflow side of the rainwater infiltration basin on the side of the intermediate water tank 2 to further infiltrate the rainwater on the side of the middle water tank. The discharge side inlet of the basin is connected to the overflow pipe shown in FIG. In this way, by using the mounts of the respective water storage tanks also as the rainwater infiltration basins and connecting the rainwater infiltration basins in parallel, it is possible to achieve not only the workability improvement but also the surplus rainwater drainage capacity improvement.

In addition, here, an example in which the rainwater tank 1 and the medium water tank 2 are installed in a one-to-one relationship is shown in FIGS. 1 and 3, but in reality, a plurality of each is installed in parallel. It is also possible to do. Also in this case, it is necessary to prevent the entry of the intermediate water into the rainwater tank by providing a passage opening / closing means such as a ball tap or an electric valve on the side of the intermediate water tank 2.

FIG. 4 shows a schematic view of the rainwater tank 1 having both the initial water removal function of the rainwater infiltration basin shown in FIG. 2 and the function of discharging water into the ground. In this case, as the rainwater infiltration basin 3 arranged in the upstream portion of the rainwater tank 1, the infiltration basin having the function of removing the initial flow water shown in FIG. 2 is used, and the rainwater infiltration basin located on the overflow side of the rainwater tank 1 is used. It is desirable to install a type that attaches importance to the general ability to discharge water into the ground.
As for the rainwater infiltration basin 19 that emphasizes water discharge capacity, the inlet pipe on the inflow side and the introduction pipe on the discharge side are cut off, and the rainwater injected from the inflow pipe on the inflow side is directly attached to the side wall of the rainwater infiltration basin 19.
Alternatively, the water is discharged into the ground through a water permeable hole 18 provided in the bottom wall, and only when the water discharge capacity is exceeded, the water is drained from the introduction pipe on the discharge side through the overflow pipe 15.

Further, in order to improve the underground water discharge capacity of the rainwater infiltration basin 19 disposed in the downstream portion of the rainwater tank 1, it may be possible to arrange the rainwater infiltration pipe 20 shown in FIG. As a holding member for the rainwater permeation pipe 20 having the water permeation hole 18,
It is desirable to use crushed stone with high water permeability. It is necessary to determine the buried location of the rainwater permeation pipe 20 and the total length of the permeation pipe in consideration of the rainwater underground permeation capacity of the buried portion. Further, the water permeation hole 18 provided in the rainwater permeation pipe 20.
Similar consideration must be given to the hole diameter and number of holes.

[Brief description of drawings]

FIG. 1 is an explanatory view conceptually showing a rainwater supply system according to the present invention.

FIG. 2 is an explanatory view showing the inside of a rainwater infiltration basin.

FIG. 3 is an explanatory diagram showing a second embodiment.

FIG. 4 is an explanatory diagram showing a third embodiment.

FIG. 5 is an explanatory diagram showing a fourth embodiment.

[Explanation of symbols]

1 rain water tank 2 Middle water tank 3 Rainwater infiltration basin 4 rain gutter 5 Rainwater supply piping 6 well water supply piping 7 Middle water supply piping 8 Water supply pipe 9 Rainwater connection piping 10 Check valve 11 Ball tap for rain water tank 12 Ball Tap for Medium Water Tank 13 Rainwater piping 14 Medium water piping 15 Overflow pipe 16 Rainwater drain pipe 17 Outlet hole 18 Water-permeable hole 19 Rainwater infiltration basin for water discharge 20 Rainwater penetration pipe

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masahiro Tsuneda             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. (72) Inventor Yoshiaki Araki             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. (72) Inventor Shinyo Endo             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. F-term (reference) 2D063 AA14

Claims (8)

[Claims] 1. A rainwater tank for storing rainwater collected by rainwater collecting means, a supply means for supplying water stored in the rainwater tank to a reusable device such as a toilet bowl or sprinkler, the rainwater tank and the A rainwater supply device comprising a pipe connecting to a reuse device, wherein the rainwater tank and a side wall and / or a bottom wall have a water permeation hole, and at least a part of the rain water permeates underground. A rainwater supply device, characterized in that it is connected to a masu via a rainwater supply pipe. 2. The side wall of the rainwater infiltration basin has an inflow side introduction section communicating with the rainwater collecting means and a discharge side introduction section communicating with the rainwater tank. The inflow side introduction section and the discharge section The rainwater supply system according to claim 1, wherein the side introduction part is connected by a pipe having a discharge hole. 3. An overflow port provided in the rainwater tank is connected to an inlet portion of the rainwater infiltration basin on an inflow side, and the rainwater tank is disposed above the rainwater infiltration basin. The rainwater supply device according to claim 1. 4. The rainwater supply device is provided with an intermediate water tank for storing household wastewater such as bathtub water independently of the rainwater tank, and the rainwater from the rainwater tank flows into the intermediate water tank. The rainwater supply device according to claim 1, wherein the both tanks are connected via a non-returnable means. 5. The rainwater supply device according to claim 4, wherein rainwater and well water injection paths are independently provided in the rainwater tank. 6. The rainwater supply according to claim 4 or 5, wherein the medium water tank is provided with an inflow passage for household wastewater such as bath water and a clean water injection path independently of each other. apparatus. 7. A rainwater inflow path connecting the rainwater tank and the medium water tank is provided with a flow path opening / closing means that opens when the water level of the medium water tank is equal to or lower than a predetermined water level. The rainwater supply device according to any one of claims 4 to 6. 8. The rainwater supply device according to claim 4, wherein the rainwater tank and the medium water tank have the same capacity.