JP2005016039A - Rain water intake tank - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rain water intake tank capable of taking in only fresh water by effectively eliminating initial rain water without adopting a complicated structure or increasing cost. <P>SOLUTION: This rain water intake tank is divided in an upper side rain water lead-in chamber A and a lower side rain water storage chamber (B). The rain water lead-in chamber (A) is provided with an intake port (301), and an initial rain water discharge port (401) with a comparatively small diameter and a clean water supply port (402) with a comparatively large diameter formed at a bottom part (403) and communicating with the rain water storage chamber (B). The bottom (403) is inclined downward to the initial rain water discharge port (401) side. The storage chamber (B) is provided with a fresh water lead-in pipe (5) communicating with the fresh water supply port (402) and opened at its lower end near the bottom of the rain water storage chamber (B); a discharge port (201) provided near the upper part; an initial rain water discharge tube (7) with one end communicating with the initial rain water discharge port (401) and with the other end communicating with the discharge port (201), and further with a smaller diameter than the discharge port (401); and a storage water supply port (202) provided below. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rainwater intake tank that can take rainwater by connecting to a fence, and more particularly to a rainwater intake tank that can effectively remove initial rainwater when taking rainwater.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a rainwater intake tank is provided that is connected to a fence such as a house to take in and store rainwater, thereby effectively using the rainwater.
[0003]
However, the rainwater intake tanks that are generally provided have a structure that introduces all the rainwater flowing through the fence into the tank, and also takes in the initial rainwater. Since rainwater containing dirt that has accumulated in the river flows through the dredging and the initial rainwater is considered to be acid rain, in the rainwater intake tank that also takes in the initial rainwater, It has been pointed out that there is a problem with effective use.
[0004]
Therefore, in recent years, rainwater intake tanks that can take in rainwater while removing initial rainwater have been provided.
[0005]
That is, in these water intake tanks, (1) a method for discharging initial rainwater using a counter weight (see Japanese Patent Publication No. 4-10538), (2) a rain sensing means and a counting means for detecting rainfall, A method of collecting rainwater after a predetermined time has elapsed since the detection of rain (see Japanese Patent No. 2844134), (3) Using a separation device that separates a small amount of water from a large amount of water into the tub, A method that makes it possible to remove a small amount of initial rainwater containing dust or the like (see JP-A-8-319641), (4) a method of removing initial rainwater using a water stop valve (see JP-A-9-41429) (5) A method in which a gap is provided between the inner peripheral wall of the housing and the rain water receiver in the rain water intake device so that a small amount of initial rain water is not taken by being transmitted along the inner peripheral wall (see JP-A-11-131537). (6) Rain It adopts a method which enables removal of the initial rainwater (see JP-A-11-343644) by connecting to the inner bag a pipe branched with branches the water guide pipe to introduce.
[0006]
[Patent Document 1] Japanese Patent Publication No. 4-10538 [Patent Document 2] Japanese Patent No. 2844134 [Patent Document 3] JP-A-8-319641 [Patent Document 4] JP-A-9-41429 [Patent Document 5] Japanese Patent Laid-Open No. 11-131537 [Patent Document 6] Japanese Patent Laid-Open No. 11-343644
[Problems to be solved by the invention]
However, in these methods, the structure is complicated, the manufacturing cost is increased, or the effectiveness is questioned.
[0008]
That is, the structure using the counter weight (Japanese Patent Publication No. 4-10538) and the method of removing the initial rainwater using a water stop valve (Japanese Patent Laid-Open No. 9-41429) must be complicated in structure. In the method using the rain sensing means and the counting means (Patent No. 2844134) that senses water, the structure becomes complicated and the cost increases, and a separation device that separates a small amount of water from a large amount of water is used. (Refer to Japanese Patent Laid-Open No. 8-319641) and a method in which a small amount of initial rainwater is prevented from being taken in by passing through the inner peripheral wall by providing a gap between the inner peripheral wall of the housing and the rainwater receiver in the rainwater intake device ( In Japanese Patent Application Laid-Open No. 11-131537), there is a question as to whether it is possible to effectively separate the initial rainwater and the fresh water that is not so, and that the water introduction pipe for introducing rainwater is branched. Structure in Method (see JP-A-11-343644) for connecting branched pipe to the inner bag is complicated.
[0009]
Therefore, an object of the present invention is to provide a rainwater intake tank capable of effectively removing initial rainwater and taking only fresh water without employing a complicated structure and without increasing costs.
[0010]
[Means for Solving the Problems]
The rainwater intake tank of the present invention is a rainwater intake tank connected to a fence,
It is divided into two upper and lower spaces, a rainwater introduction chamber located above and a rainwater storage chamber located below,
The rainwater introduction chamber has a water intake for taking in rainwater, a relatively small initial rainwater discharge port formed at the bottom and communicated with the rainwater storage chamber, and a comparison formed at the bottom and communicated with the rainwater storage chamber. A large-diameter fresh water supply port, and the bottom portion is inclined downward by a predetermined angle toward the initial rainwater discharge port side,
The rainwater storage chamber communicates with the fresh water supply port, and a fresh water introduction pipe having a lower end opened near the bottom of the rainwater storage chamber, a discharge port provided near the top, and one end connected to the initial rainwater discharge port. An initial storm water discharge tube having a diameter smaller than that of the discharge port, and a storage water supply port provided below, the other end of which communicates directly or indirectly with the discharge port. It is characterized by having.
[0011]
In the rainwater intake tank of the present invention, the inside of the tank is divided into a rainwater introduction chamber located above and a rainwater storage chamber located below, and the bottom of the rainwater introduction chamber is a relatively small area for discharging initial rainwater. Provided with a small-diameter initial rainwater discharge port and a relatively large-diameter freshwater supply port for supplying freshwater to the rainwater storage room, and the bottom part of the rainwater introduction chamber with the initial rainwater discharge side facing downward It is tilted by an angle.
[0012]
Therefore, a relatively small amount of initial rainwater is discharged from the initial rainwater discharge port while flowing toward the initial rainwater discharge port side due to the inclination of the bottom, and then the amount of rainwater increases and the amount of rainwater introduced is the initial rainwater discharge port. When the discharge capacity of the rainwater is exceeded, the amount of rainwater in the rainwater introduction chamber increases, and after the rainwater level reaches the freshwater supply port, the rainwater is supplied from the freshwater supply port to the rainwater storage chamber.
[0013]
In addition, the rainwater storage chamber communicates with the fresh water supply port and has an introduction pipe having a lower end opened near the bottom of the rainwater storage chamber, a discharge port provided near the top, and one end of the initial rainwater discharge port. An initial rainwater discharge tube having a diameter smaller than that of the discharge port, at least a diameter of a communication portion with the discharge port, the other end of which is directly or indirectly connected to the discharge port. The initial rainwater discharged from the rainwater discharge port is discharged from the tank through the discharge port, and the fresh water supplied from the freshwater supply port is stored from the bottom of the rainwater storage chamber through the introduction pipe.
[0014]
Further, the initial rainwater discharge tube has at least a diameter of a communication portion with the discharge port smaller than a diameter of the discharge port, thereby forming a space in the vicinity of the communication portion between the initial rainwater discharge tube and the discharge port. Therefore, after the level of the rainwater taken into the rainwater storage chamber reaches the discharge port, the supplied time is discharged from the discharge port in order from the old fresh water through this space.
[0015]
Thus, in the present invention, since the initial rainwater can be removed by inclining the bottom of the rainwater introduction chamber having the comparatively small diameter initial rainwater discharge port and the relatively large diameter fresh water supply port, a particularly complicated structure is provided. It is possible to take fresh water while effectively removing initial rainwater without adopting water and without increasing costs, and after the rainwater taken exceeds the storage capacity of the tank, it can be discharged in order from old fresh water. It can always store only fresh rainwater.
[0016]
【Example】
An embodiment of the rainwater intake tank of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing the entire rainwater intake tank of this embodiment, and FIG. 2 is a cross-sectional view taken along line AA in FIG. It is sectional drawing which showed the structure, and in the figure, 1 is the rainwater intake tank of a present Example.
[0017]
The rainwater intake tank 1 includes a tank main body for storing fresh water, an inner lid that is detachably supported above the tank main body, and a removable lid that closes the upper portion of the inner lid. It is divided by an inner lid into two upper and lower spaces, a rainwater introduction chamber located above and a rainwater storage chamber located below. First, rainwater is introduced into the rainwater introduction chamber via a water intake provided in the lid. After that, the rainwater introduced into the rainwater introduction chamber can be supplied to the rainwater storage chamber while removing the initial rainwater.
[0018]
That is, in the figure, reference numeral 2 denotes a tank main body. In this embodiment, the tank main body 2 has a box shape with an upper portion opened, and the inside thereof is a rainwater storage chamber B. The tank body 2 has a structure in which the side wall 203 is inclined inward as it goes to the lower part, and as a result, its capacity decreases as it goes to the bottom part. A step 204 is formed to increase the strength. However, the shape of the rainwater intake tank of the present invention is not particularly limited to this shape, and may be any shape as long as rainwater can be stored.
[0019]
Next, a water storage supply port 202 for supplying stored rainwater is formed in the vicinity of the bottom of the tank body 2, and in use, a faucet or the like is connected to the water storage supply port 202, whereby the tank It can be used when rainwater in the main body 2 is desired.
[0020]
In addition, a cylindrical fresh water introduction pipe 5 is provided inside the tank body 2, and an upper portion of the fresh water introduction pipe 5 is opened near the upper portion of the tank body 2, and a lower end portion thereof is near the bottom portion of the tank body 2. With an opening. As a result, fresh water can be introduced into the tank body 2 via the fresh water introduction pipe 5, and at the time of introduction, fresh water is introduced from the lower side of the tank body 2, and newer fresh water is introduced into the tank body 2. Can be introduced at the bottom.
[0021]
Further, a discharge port 201 is provided above the tank body 2, and the other end of the initial rainwater discharge tube 7 whose one end is opened at the top of the tank body 2 is inserted into the discharge port 201. As the initial rainwater discharge tube 7, at least the diameter of the portion inserted into the discharge port 201 is smaller than the diameter of the discharge port 201, so that the vicinity of the periphery of the initial rainwater discharge tube 7 is used. There is a space.
[0022]
Next, the inner lid 4 is locked to the upper portion of the tank main body 2 so as to close the upper opening of the tank main body 2, and the introduced rainwater can be temporarily stored in the inner lid 4. Yes.
[0023]
3 to 5 are views showing the inner lid 4. FIG. 3 is a cross-sectional view showing the structure of the inner lid 4. FIG. 4 is a perspective view showing the outer appearance of the inner lid 4. FIG. It is a perspective view which shows the state which looked at the external appearance from the direction opposite to FIG.
[0024]
The inner lid 4 in this embodiment includes a bottom portion 403 and an edge portion 404 extending in the vertical direction at the peripheral edge of the bottom portion 403. As shown in FIG. It is mounted on the upper part of the tank main body 2 and is engaged with the upper part of the tank main body 2 so that the edge 404 is disposed outside the upper part of the tank main body 2. The enclosed space is designated as rainwater introduction chamber A.
[0025]
In addition, a relatively small diameter initial rainwater discharge port 401 is formed in the vicinity of one end of the bottom 403 of the inner lid 4, and this initial rainwater discharge port 401 communicates with the upper end of the initial rainwater discharge tube 7. Connected as possible.
[0026]
Further, a relatively large diameter fresh water supply port 402 is formed in the vicinity of the other end of the bottom portion 403 of the inner lid 4, and this fresh water supply port 402 is connected to the upper portion of the fresh water introduction pipe 5 so as to communicate therewith. Has been.
[0027]
The bottom portion 403 of the inner lid 4 is inclined downward by a predetermined angle from the fresh water supply port 402 side toward the initial rainwater discharge port 401 side, whereby rainwater introduced into the rainwater introduction chamber A is First, in a small amount of the initial rainwater stage, it is stored on the initial rainwater discharge port 401 side by the inclination of the bottom 403, and is discharged from the discharge port 201 of the tank body 2 through the initial rainwater discharge port 401 and the initial rainwater discharge tube 7. It will be done. On the other hand, after the initial rainwater stage, when the amount of rainwater introduced becomes large and exceeds the discharge capacity of the initial rainwater discharge port 401, the water level in the rainwater introduction chamber A rises and the water level becomes the fresh water supply port 402. Then, clean rainwater is stored in the tank body 2 through the fresh water supply port 402 and the fresh water introduction pipe 5. Although the inclination angle of the bottom 403 is not particularly limited, in the present embodiment, the bottom 403 is inclined at an angle of about 5 degrees. Further, in this embodiment, as shown in FIGS. 4 and 5, in order to make it possible to reliably collect the rainwater introduced into the rainwater introduction chamber A at the initial rainwater discharge port 401, the bottom 403 is placed in the initial rainwater. In addition to simply inclining toward the discharge port 401 side, both end portions of the bottom portion 403 are inclined upward, and the area of the portion of the bottom portion 403 that is inclined upward increases toward the initial rainwater discharge port 401. Thus, the bottom 403 has a substantially funnel shape with the initial rainwater discharge port 401 at the bottom.
[0028]
Next, 3 in FIG. 1 is a lid, and in this embodiment, the lid 3 is detachably locked to the upper part of the middle lid 4, thereby constituting the water intake tank 1. In the present embodiment, the lid 3 is formed with a water intake 301 for introducing rainwater into the rainwater introduction chamber A, whereby the rainwater introduction chamber in the water intake tank 1 through the water intake 301 is formed. Rainwater can be introduced into A.
[0029]
In FIG. 2, 12 is a spacer. That is, in this embodiment, the spacer 12 is provided on the back side of the inner lid 4 on the side of the fresh water supply port 402, thereby ensuring the inclination of the bottom 403. Yes. That is, in the inner lid 4 in the present embodiment, the bottom portion 403 and the edge portion 404 extending in the vertical direction at the peripheral edge portion of the bottom portion are formed and the bottom portion 403 is inclined. The distance to the bottom 403 is not uniform. Therefore, when the inner lid 4 is locked to the tank body 2 without taking any means, the inner lid 4 is locked in an oblique state and the inclination of the bottom 403 cannot be secured. End up. Therefore, in this embodiment, in order to make the distance from the lower end of the edge 404 on the initial rainwater discharge port 401 side to the bottom 403 equal to the distance from the lower end of the edge 404 on the fresh water supply port 402 side to the bottom 403. The spacer 12 is provided on the back side of the inner lid 4 on the side of the fresh water supply port 402 side.
[0030]
In FIG. 2, reference numeral 6 denotes a filter. In this embodiment, the filter 6 is provided in a location corresponding to the water intake port 301 formed in the lid 3 in the rainwater introduction chamber A, so that the filter 6 is relatively large. It can be removed.
[0031]
Here, FIG. 6 is a perspective view showing the filter 6. In this embodiment, the filter 6 is a frame formed by framed a stainless frame material 601 having a large number of small holes 602 in a substantially rectangular shape. Thus, after rainwater is once taken into the frame material, the taken rainwater is discharged from the small holes 602, thereby making it possible to remove relatively large dust such as dead leaves.
[0032]
Next, the operation of the rainwater intake tank of the present embodiment configured in this way will be described. In FIG. The rod 8 is connected to the water intake 301 of the lid 3. And the bottom 8 is connected to the discharge port 201 of the tank body 2, and at least one end of the initial rainwater discharge tube 7 is inserted into the connection pipe 9, and the stored rainwater is desired. A faucet 10 or the like is connected to the water storage supply port 202 so that it can be used.
[0033]
Then, when rainwater flows through the ridge 8 in this state, the rainwater is temporarily stored in the rainwater introduction chamber A first. At the initial rainwater stage, since the amount is relatively small, the initial rainwater discharge port 401 and the initial rainwater discharge tube 7 flow while flowing toward the initial rainwater discharge port 401 along the inclination of the bottom 403 of the inner lid 3. It is discharged from the intake tank 1 via
[0034]
On the other hand, when the amount of rainwater becomes large after the initial rainwater stage, since the initial rainwater discharge port 401 has a relatively small diameter, the amount of rainwater introduced into the rainwater introduction chamber A is discharged from the initial rainwater discharge port 401. The capacity of the rainwater introduced into the rainwater introduction chamber A is gradually increased by exceeding the capacity.
[0035]
After that, after the level of the rainwater introduced into the rainwater introduction chamber A reaches the fresh water supply port 402, the discharge from the initial rainwater discharge port 401 is continued and exceeds the height of the fresh water supply port 402. Rainwater at the water level is stored from the bottom in the rainwater storage chamber B through the freshwater supply port 402 and the freshwater supply pipe 5 connected thereto.
[0036]
Further, after the amount of rainfall is large and the rainwater level in the rainwater storage chamber B reaches the discharge port 201, the rainwater in the portion exceeding the discharge port 201 is discharged from the initial rainwater discharge tube 7 at the discharge port 201. It is discharged to the side of the ridge 8 through a space formed in the vicinity of. And at this time, in this embodiment, the lower end of the fresh water supply pipe 5 is an opening near the bottom, and since the rainwater taken in is stored from the bottom of the rainwater storage chamber B, in order from the old rainwater at the time of taking in, It is discharged through the discharge port 201.
[0037]
Thus, in the present invention, since the initial rainwater can be removed by inclining the bottom of the rainwater introduction chamber having the relatively small diameter initial rainwater discharge port and the relatively large diameter fresh water supply port, it is particularly complicated. Without adopting the structure, it is possible to take fresh water while removing initial rainwater effectively without increasing costs, and after the rainwater taken exceeds the storage capacity of the tank, it can be discharged in order from old fresh water. It can always store only fresh rainwater.
[0038]
Further, in the present embodiment, since the inner lid 4 and the lid body 3 are detachable, this can be easily performed during internal cleaning.
[0039]
【The invention's effect】
The rainwater intake tank of the present invention is implemented in the form described above, and has the following effects.
[0040]
In the rainwater intake tank of the present invention, the interior is divided into a rainwater introduction chamber located above and a rainwater storage chamber located below, and the bottom of the rainwater introduction chamber has a relatively small diameter for discharging initial rainwater. The initial rainwater discharge port and a relatively large-diameter freshwater supply port for supplying fresh water to the rainwater storage chamber, and the bottom of the rainwater introduction chamber are at a predetermined angle with the initial rainwater discharge side facing downward The amount of rainwater introduced is increased by a relatively small amount of initial rainwater that is discharged from the initial rainwater discharge port while flowing toward the initial rainwater discharge port side due to the inclination of the bottom. When the amount of water discharged exceeds the initial rainwater discharge capacity, the amount of rainwater in the rainwater introduction chamber increases, and after the rainwater level reaches the freshwater supply port, it is supplied from the freshwater supply port to the rainwater storage chamber. To go.
[0041]
In addition, the rainwater storage chamber communicates with the fresh water supply port and has an introduction pipe having a lower end opened near the bottom of the rainwater storage chamber, a discharge port provided near the top, and one end connected to the initial rainwater discharge port. An initial rainwater discharge tube having a diameter smaller than that of the discharge port and having a diameter communicating with the discharge port, the other end of which is connected directly or indirectly to the discharge port. The initial rainwater discharged from the outlet is discharged from the tank to the outside through the discharge port, and the fresh water supplied from the fresh water supply port is stored from the bottom of the rainwater storage chamber through the introduction pipe. After the level of rainwater taken into the storage room reaches the discharge port, the supply time is discharged from the initial rainwater discharge port in order from the oldest clear water, so only fresh rainwater can always be stored.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a rainwater intake tank of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view for explaining the structure of the inner lid in the embodiment of the rainwater intake tank of the present invention.
FIG. 4 is a perspective view showing an inner lid in the embodiment of the rainwater intake tank of the present invention.
FIG. 5 is a perspective view showing an inner lid in the embodiment of the rainwater intake tank of the present invention.
FIG. 6 is a perspective view showing a filter in an embodiment of the rainwater intake tank of the present invention.
FIG. 7 is a partial cross-sectional view for explaining the operation in the embodiment of the rainwater intake tank of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rainwater intake tank 2 Tank main body 201 Discharge port 202 Water storage supply port 203 Side wall 204 Level difference 3 Lid body 301 Water intake 4 Middle lid 401 Initial rainwater discharge port 402 Fresh water supply port 403 Bottom 404 Edge 5 Fresh water introduction pipe 6 Filter 7 Initial rainwater Drain tube 8 竪 樋 9 Connection pipe 10 Faucet 12 Spacer

Claims (3)

A rainwater intake tank connected to a fence,
While dividing into two upper and lower spaces, a rainwater introduction chamber (A) located above and a rainwater storage chamber (B) located below,
The rainwater introduction chamber (A)
A water intake (301) for taking in rainwater, a relatively small-diameter initial rainwater discharge port (401) communicating with the rainwater storage chamber (B) formed at the bottom (403), and a bottom (403) And a relatively large diameter fresh water supply port (402) communicating with the rainwater storage chamber (B), and the bottom (403) is lowered by a predetermined angle toward the initial rainwater discharge port (401). Tilt to the side,
The rainwater storage chamber (B) communicated with the fresh water supply port (402) and provided with a fresh water introduction pipe (5) having a lower end opened near the bottom of the rainwater storage chamber (B) and in the vicinity of the upper portion. The outlet (201) communicates with at least the outlet (401), one end of which communicates with the initial rainwater outlet (401) and the other end communicates directly or indirectly with the outlet (201). A rainwater intake tank comprising an initial rainwater discharge tube (7) having a diameter smaller than that of the discharge port (401) and a water storage supply port (202) provided below. The rainwater intake tank according to claim 1, further comprising a filter (6) in the vicinity of the intake (301) in the rainwater introduction chamber (A). The rainwater intake tank according to claim 1 or 2, wherein the upper part of the tank is constituted by a detachable lid (3).

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