JP6391008B2 - Rainwater storage pipe structure and rainwater tank used for it - Google Patents

Description

  The present invention is a rainwater storage system that stores rainwater in a storage pipe that connects a plurality of rainwater tanks buried in the ground such as residential land, and can effectively use the stored rainwater for watering plants. The present invention relates to a rainwater tank used for a pipe structure and its storage pipe structure.

  In recent years, roads and vacant lots (parking lots, etc.) have been paved rapidly, and urbanized areas with almost no unpaved parts are increasing. In such areas, rainwater flows into rivers through road gutters and sewer drains, etc., with almost no infiltration of rainwater into the ground, so it exceeds the capacity of rivers in a short time and causes so-called urban flooding. It has become a social problem. On the other hand, there is almost no rain during the dry season, and water intake restrictions are being implemented in various places. These problems are expected to become increasingly serious with the recent extreme weather, which is said to be one of the causes of global warming.

  In view of such circumstances, rainwater is temporarily stored in rainwater pits embedded in residential land and the pipes connecting them, thereby reducing the damage caused by urban floods and effectively using the stored rainwater. Attempts have been made. As one of them, an inflow pipe into which rainwater flows is connected, and a rainwater basin having an overflow pipe that opens upward from the top of the inflow pipe and drains the stored rainwater is installed. A rainwater utilization system, in which a water intake pipe for taking in the stored rainwater is connected to the rainwater trough, and the top position of the water intake pipe is arranged to be lower than the bottom of the inflow pipe. An invention relating to a rainwater utilization system has been proposed (Patent Document 1).

  In the rainwater utilization system of Patent Document 1, rainwater that has flowed into the rainwater basin from the inflow pipe is stored in the inflow pipe and the rainwater basin until reaching the upper end of the overflow port. Thus, by temporarily storing rainwater that has fallen in residential land, it is possible to prevent rainwater from flowing into the river all at once, reducing the damage caused by urban flooding, and in the case of water shortages during the dry season, The stored rainwater can be used effectively.

JP 2010-090605 A

  However, in the rainwater utilization system of Patent Document 1, rainwater that flows in from the inflow pipe is stored not only in the inflow pipe but also in the rainwater trough. Rainwater may leak from the water, and the amount of rainwater that has been stored may decrease. In particular, the rainwater tank and the inflow pipe buried in the residential land are connected by a simple operation of simply inserting the inflow pipe into the rainwater tank insertion hole without using an adhesive. Due to the rainwater pressure, a gap is likely to be formed there, and water often leaks from the gap.

  The present invention has been made in view of the above problems, and the problem to be solved is rainwater that can effectively use stored rainwater without waste by preventing leakage of rainwater stored in the storage pipeline. It is to provide a storage pipe structure and a rainwater tank used therefor.

In order to achieve the above object, the rainwater storage pipe structure according to the present invention is:
A rainwater storage conduit structure for storing rainwater inside a storage conduit connecting a plurality of rainwater traps buried in the ground,
A discharge port for discharging rainwater to the outside is provided in the vicinity of one end of the storage pipeline and higher than the top of the storage pipeline, and the rainwater flowing into the storage pipeline has a water level at the discharge port. Until it reaches the inside of the storage pipeline,
A rainwater tank buried on the other end side relative to a rainwater tank at one end of the storage pipe provided with the discharge port, the rainwater tank located between the rainwater tank at one end and the rainwater tank at the other end, or / And in the rainwater basin at the other end, an opening is formed substantially at the top of the storage pipeline ,
From the periphery of the opening, there is provided an extension port at which the base end rises upward,
An insertion hole is formed in the bottom surface of the rainwater tank, and the extension port is inserted through the insertion hole without a gap .

In the rainwater storage conduit structure of the present invention, a damming member comprising at least a first port directed upward at one end of the storage conduit and a second port connected to one end of the storage conduit It is preferable that the first port is a discharge port for discharging rainwater to the outside. It is more preferable that the upper Kinobe設口is a pipe connecting port. In particular, a filter member is preferably attached to the pipe connection port. Furthermore, in the rainwater tank buried between the rainwater tank at one end and the rainwater tank at the other end of the storage pipe, the storage pipe is connected through a joint having a plurality of storage pipe connection ports and the opening. It is preferable that Further, the bottom surface of the rain water basins is more preferably has a shape along the substantially upper half of the reservoir conduit.

  Next, the rainwater basket of the present invention used for the rainwater storage pipe structure as described above has a groove portion in the bottom surface in which the storage pipe line is received from below, and an insertion hole that communicates with the inside of the rainwater tank. Is formed.

  Further, another rainwater trough of the present invention has a first connection port and a second connection port, the first connection port is formed on the bottom surface, and the second connection port is the first connection port. The first connection port and the second connection port are connected to each other through a closed reservoir line.

  The rainwater storage pipe structure of the present invention is provided with a drain outlet located at a position higher than the top of the storage pipe in the vicinity of one end of the storage pipe, so that the rainwater flowing into the storage pipe has a water level. Until it reaches the drain, it is stored inside the storage pipe. Since the opening where the rainwater overflows is formed at the top of the storage pipe, the rainwater is stored until it reaches the top of the storage pipe. Can be used as a storage space.

  In particular, a damming member including at least a first port directed upward and a second port to which one end of the storage channel is connected is provided at one end of the storage channel. The rainwater storage pipe structure is a drainage outlet for discharging rainwater to the outside, and rainwater that has flowed into the storage pipe is blocked by a blocking member and stored inside the storage pipe. Therefore, the rainwater inside the storage pipe does not leak from the connection part (periphery of the insertion hole) between the rainwater tank and the storage pipe as in the past. The amount of rainwater that has been reduced is never reduced.

  In addition, the rainwater storage pipe structure in which the extended opening at least the base end of which rises upward from the peripheral edge of the opening can be used for various purposes. . That is, when the extension port is a pipe connection port, a height adjusting tube for adjusting the water level, a filter member for filtering rainwater described later, and the like can be connected to the pipe connection port. It becomes like this.

  If a filter member is attached to the pipe connection port, even if foreign matter is mixed into the inflowing rainwater, the foreign matter is removed by the filter member, and only clean rainwater is stored in the storage pipeline. Become so.

  Moreover, in the rainwater tank buried between the rainwater tank at one end and the rainwater tank at the other end of the storage pipe, the storage pipe is connected via a joint having a plurality of storage pipe connection ports and the opening. In the rainwater storage pipeline structure that has been used, the degree of freedom of piping of the storage pipeline is dramatically improved by using a joint. In addition, since this joint originally has an opening, it is possible to save the trouble of forming the opening in the storage conduit itself. Since the storage conduit and the joint are connected using an adhesive, there is no fear of water leakage from the connection portion.

  Furthermore, a rainwater storage pipe structure in which an insertion hole is formed in the bottom surface of the rainwater trough and the pipe connection port is inserted through the insertion hole without a gap is formed in a pipe groove formed by excavating the ground. Since the rainwater tank can be installed after being disposed and connected to the joint, the workability of the rainwater storage conduit structure is excellent.

  In particular, the rainwater storage pipe structure in which the bottom surface of the rainwater tank has a shape substantially along the upper half of the storage pipe line, when the rainwater tank is placed on the storage pipe line, the bottom surface of the rainwater tank is stored. Since it fits in the substantially upper half of a pipe line, a rainwater tank is installed stably and construction becomes easier.

  In the rainwater storage pipe structure of the present invention having the above-described structure, a groove part is formed on the bottom surface to receive the storage pipe line from below, and an insertion hole communicating with the inside of the rainwater tank is formed in the groove part. The rainwater tank is preferably used, and the rainwater tank can be stably installed because the groove portion fits into the storage pipe. Such a rainwater trough can be installed after the storage pipe is placed in the ground and connected to the joint, so it is easy to construct the rainwater storage pipe structure with excellent workability and the effects described above. Can be built.

  Further, another rainwater trough of the present invention has a first connection port and a second connection port, the first connection port is formed on the bottom surface, and the second connection port is the first connection port. It is formed on the side of the ridge below the connection port, and the first connection port and the second connection port communicate with each other through a closed storage pipe. Thus, the storage pipes can be connected to each other in the rainwater trough without using a separate joint.

It is a schematic sectional drawing which shows the rainwater storage pipe line structure which concerns on one Embodiment of this invention. It is a schematic perspective view of the storage conduit structure. It is a front view which shows the coupling used for the storage pipe line structure. It is a perspective view which shows the damming member used for the storage pipe line structure. It is sectional drawing which shows the state which dammed rainwater with the same damming member. It is sectional drawing which shows the state which cancelled the rainwater damming by the damming member. It is a schematic plan view which shows the various couplings used for the storage pipeline structure. It is a schematic sectional drawing which shows the rainwater storage pipe line structure which concerns on other embodiment of this invention. It is a schematic sectional drawing which shows the rainwater storage pipe line structure which concerns on other embodiment of this invention. It is a disassembled perspective view which shows the rain water tank which concerns on one Embodiment of this invention. It is sectional drawing of the rainwater basin. It is explanatory drawing explaining the groove part formed in the bottom face of the rain water tank. It is sectional drawing which shows the rain water tank which concerns on other embodiment of this invention. It is a top view which shows the rain water tank which concerns on other embodiment of this invention. It is a front view of the rain watershed. It is a left view of the rain watershed. It is a rear view of the rainwater tank. It is a bottom view of the rain watershed. It is sectional drawing which shows the state which connected the coupling to the rainwater tank. It is a top view which shows the rain water tank which concerns on other embodiment of this invention.

  Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

The rainwater storage pipeline structure of the present invention shown in FIGS. 1 and 2 stores plant water by storing rainwater in a storage pipeline 2 that connects a plurality of rainwater troughs 1 buried in the ground in a residential land. In addition to making it possible to use it effectively, it was developed to reduce the load on rivers and sewerage facilities during torrential rains.
For convenience, FIG. 1 shows a mode in which only three rainwater tanks 1 are provided, but the number of rainwater tanks 1 may be two or more than three.

  In the rainwater storage pipe structure of the present invention, rainwater that has fallen on the roof of the house in the residential land is collected in the eaves wall 5 and flows down the wall 6 and flows into the rainwater tank 1 from the inflow pipe 7. It is like that. The rainwater that has flowed into the rainwater basin 1 in this way is filtered after the dust such as dead leaves is removed by the filter member 4, and then flows into the interior of the storage pipe 2, so that the opening 2 </ b> A and the blocking member 3 The first port 3a is stored until it overflows.

  As the rainwater tank 1 embedded in the residential land, one made of polypropylene or vinyl chloride resin which is excellent in durability and workability is suitably used. As shown in FIG. 1 and the like, the rainwater trough 1 has a bucket shape with an upper portion opened and a lower portion closed, and the upper opening is covered with a lid 10. As shown in FIG. 5 and FIG. 6, an insertion hole 1 a for inserting and connecting the storage conduit 2 is drilled on the peripheral surface of the rainwater tank 1. A rubber packing 1b for securing the adhesion between the ridge 1 and the storage pipe line 2 and the water-stopping property is attached. In such a rainwater tank 1, a small amount of rainwater flowing in from the inflow pipe 7 flows directly from the filter member 4 into the storage pipe 2, and the remaining rainwater is once stored in the rainwater tank 1. Will be. Then, when the water level inside the rain basin 1 rises to the filter member 4, it flows into the storage pipe 2 from the filter member 4. At this time, foreign substances such as mud sand and dead leaves are mixed in the rainwater flowing into the rainwater basket 1, but the space below the filter member 4 functions as a mud reservoir. Can be prevented from clogging immediately, and maintenance of the rainwater tank 1 is facilitated.

  Moreover, you may provide the rainwater tank 1 with a function that the rainwater that has flowed in penetrates into the surrounding ground, and in the case of providing such a function, as shown in FIG. A plurality of openings 1c such as small holes and slits may be perforated on the peripheral surface. Then, crushed stones are spread around the rainwater tank 1 with the perforated opening 1c and partitioned from the surrounding area such as earth and sand by a water-permeable sheet (not shown) so that the rainwater inside the rainwater tank 1 can be smoothly It will penetrate into the ground. When the rainwater basin 1 having such an opening 1c such as a small hole or a slit is buried, the rainwater overflowing from the opening 2A of the storage pipe 2 is filled with the storage pipe 2 and the rainwater overflows into the surrounding ground. Since it penetrates smoothly, there is no need to worry about rainwater overflowing from the rainwater tank 1.

Next, a storage pipe 2 for storing rainwater therein is a cylindrical pipe embedded in a residential land connecting the rainwater tank 1 at the other end (upstream side) and the rainwater tank 1 at one end (downstream side), As shown in FIG. 1, a damming member 3 is provided at one end of the storage pipe 2, and an elbow joint 21 is provided at the other end. Moreover, it is the rain water tank 1 embed | buried in the other end side rather than the rain water tank 1 of the one end of the storage pipe line 2 in which the blocking member 3 was provided, Comprising: The rain water tank 1 (position on the right side in FIG. 1) Rainwater tank 1) and the other rainwater tank 1 (rainwater tank 1 located on the left side in FIG. 1), rainwater tank 1 (rainwater tank 1 located in the middle in FIG. 1), and others In the rainwater trough 1 at the end, an opening 2 </ b> A that rainwater flows in, overflows, or serves as a water intake is formed at a substantially pipe top of the storage pipe 2.
The “pipe top” here means that the opening 2A is preferably formed at a position of 40% or more of the radius upward from the center of the storage pipeline 2, and at least the reservoir pipeline 2 It is only necessary to open at a height of 90%.

The storage pipe line 2 is a normal cylindrical pipe made of vinyl chloride resin, and when the piping facility in the residential land communicates with the public outdoor drain pipe 9 as in this embodiment, From the other end (upstream side) to one end (downstream side), the storage pipe line 2 is often provided with a flow gradient of about 1/100 to 3/100, and rainwater flowing into the storage pipe line 2 It flows downstream along the flow gradient and is blocked by the blocking member 3 so that it is stored inside the storage pipe 2. As shown in FIG. 5, when the storage pipe 2 becomes full, rainwater overflows from the first port 3 a of the blocking member 3 and flows out to the outdoor drain pipe 9 via the drain pipe 8. ing.
It should be noted that the storage pipeline 2 embedded in the residential land does not necessarily have a flow gradient, and the downstream side (one end) in this embodiment refers to a location close to the outdoor drainage pipe 9. The opposite side is called the upstream side (the other end), but when the flow gradient is not given, either can be regarded as one end or the other end, and the damming member 3 is provided at the other end. Also good.

  Such a storage pipe line 2 includes a plurality of storage pipe connection ports 20b and at least a base end portion (root portion) in the rain water tank 1 located between the rain water tank 1 at one end and the rain water tank 1 at the other end. Are connected to each other via a joint 20 having a pipe connection port 20a that rises upward. As shown in FIG. 3 and FIG. 7A, the joint 20 has a substantially T-shaped joint 20 in which two storage pipe connection ports 20 b and 20 b are projected in a straight line from the lower part of the joint 20. A so-called cheese joint. An opening portion (a portion indicated by an imaginary line in FIG. 3) that is the base end portion of the inner peripheral surface of the pipe connection port 20a and substantially the same height as the pipe top of the storage pipe line 2 It is an opening 2A of the storage pipeline 2 that also serves as an overflow port or a water intake port.

  Further, in the rainwater trough 1 at the other end, a part of the elbow joint 21 serves as an opening 2A of the storage pipe line 2 serving as a rainwater inflow port, an overflow port, or a water intake port. That is, the elbow joint 21 provided at the other end (upstream side) of the storage pipe line 2 is a normal 90 ° elbow joint in which two connection ports are connected by a cylindrical tube having a curve of approximately 90 ° as shown in FIG. The end of the storage pipe 2 is connected to one connection port, and the filter member 4 is attached to the other connection port. In such an elbow joint 21, a portion of the curved cylindrical pipe having the same height as the top of the storage pipe 2 is the opening 2 </ b> A, and the other connection port rises upward from the opening 2 </ b> A. ing.

As described above, the opening 2A serves as a rainwater inflow port and an overflow port, and also serves as a rainwater intake port, but is formed at substantially the same height as the top of the storage pipe 2. Therefore, it does not overflow from the opening 2A until the storage pipeline 2 is full of water. Therefore, substantially the entire storage pipeline 2 becomes a storage space, and a sufficient amount of rainwater necessary for watering plants can be stored in the storage pipeline 2.
The opening 2A may be formed by drilling a circular hole substantially at the top of the continuous storage pipe 2, but a part of the joint 20 or elbow joint 21 is opened as in this embodiment. By setting it as the portion 2A, it is possible to save the trouble of forming the opening 2A, and it is possible to cope with the case where the storage conduit 2 is disposed from various directions, so that the degree of freedom of piping is improved.

  In the present embodiment, the so-called cheese joint 20 is used to connect the storage conduit 2 and the storage conduit 2 in the rainwater tank 1 embedded between one end and the other end as described above. However, the joint 20 for connecting the storage pipe 2 is not limited to this shape, and as shown in FIG. 7B, the storage pipe orthogonal to the straight storage pipe connection ports 20b and 20b. A joint 20 that can connect the storage pipe line 2 from three directions by forming another path connection port 20b may be used. Further, as shown in FIG. 7 (c), even if the joint 20 is configured to connect the storage pipeline 2 from four directions by forming four storage pipeline connection ports 20b at intervals of 90 °. As shown in FIG. 7 (d), if the two storage pipe connection ports 20b and 20b are not straight but an angled joint 20, the storage pipe 2 is arranged in a straight line. You can connect even if you don't. Further, as shown in FIG. 7 (e), a joint 20 in which three storage pipe connection ports 20b protrude from the lower portion of the joint 20 at intervals of 120 ° is also preferably used. Thus, the freedom degree which pipes the storage pipe line 2 improves drastically by using the joint 20 of various forms.

  The joint 20 shown in (a) to (e) of FIG. 7 has a pipe connection port 20a that rises upward, but the joint 20 has at least a base end portion of the pipe connection port 20a facing upward. Although not shown in the drawing, the joint 20 has a pipe connection port 20a that rises once from the base end and is directed downward or parallel to the storage pipe line 2. It may be.

  As shown in FIG. 1, a filter member 4 that prevents foreign substances such as dead leaves from being mixed is attached to the pipe connection port 20 a of the joint 20 and the elbow joint 21. By attaching the filter member 4, foreign matters such as dead leaves that have flowed into the rainwater tank 1 from the inflow pipe 7 are removed, and only clean rainwater flows into the storage pipe 2 and is stored therein. ing. The filter member 4 of the present embodiment is a thick cylindrical body using a peripheral surface of the cylindrical body with a small opening such as a slit. However, the filter member 4 can remove foreign matters and have water permeability. If it has, the filter member 4 will not be limited to this, For example, a net can be attached to the opening part of the pipe connection port 20a, and the net can also be used as the filter member 4. The filter member 4 of this embodiment is of a type that is inserted inside the tube connection port 20a, but may be a filter member 4 that is externally inserted into the tube connection port 20a.

  In the case where the storage pipe 2 is inclined, the height is adjusted by connecting a height adjusting cylinder (simply a cylindrical body) to the pipe connection port 20a of the joint 20 or the elbow joint 21. Almost all of the storage pipeline 2 can be used as a storage space. In other words, the height of the joint 20 located at the lower position (when the filter member 4 is connected, the lower end position of the opening of the filter member 4) is the height of the upper end of the joint 20 or elbow joint 21 located at the highest position. Since the rainwater does not overflow from the opening 2A until the storage pipeline 2 becomes full, almost the entire storage pipeline 2 can be used as a storage space. By adjusting the height adjusting cylinder to an arbitrary height, the amount of rainwater stored in the storage pipe 2 can be controlled.

  On the other hand, the damming member 3 provided at one end (downstream side) of the storage pipeline 2 is connected to the first port 3a directed upward and the insertion hole 1a of the rainwater trough 1 as shown in FIG. As shown in FIG. 5, the third port 3 c directed downward is closed. As shown in FIG. 5, the second port 3 b and the third port 3 c directed downward are closed. The first port 3a is located at a position higher than the top of the storage pipe 2, and the first port 3a serves as a discharge port for discharging rainwater to the outside, and the storage pipe 2 is full. Then, rainwater overflows the first port 3a and is discharged to the outside (drainage pipe 8). Further, the third port 3c is not a small-diameter hole such as an orifice, but a circular hole having a diameter that allows the stored rainwater to be quickly discharged to the outside. As shown in FIG. The rain water is discharged from the third port 3c to perform maintenance inside the pipe. Normally, a detachable closing member 3d is attached to the third port 3c, and the third port 3c is completely closed.

The closing member 3d attached to the third port 3c is a rubber plug that is preferably used as a water stop cock. As shown in FIGS. A guide member 3e is provided that enables the closing member 3d to be attached and detached from above. The guide member 3e is a ball chain that is suitably provided in a water stop cock, and its upper end is attached to a protrusion 3f provided on the outer peripheral surface of the first port 3a. The third port 3c is formed at a position facing the first port 3a, that is, a position visible from the opening of the first port 3a, and the closing member 3d is provided with a guide member 3e. Therefore, the attaching / detaching operation for attaching or removing the blocking member 3d can be easily performed from above, and since it is not necessary to pierce the bottom of the damming member 3, it is excellent in maintainability.
The closing member 3d is not limited to a rubber plug as in the present embodiment, and may be a lid member that can be opened and closed from above, but has a specific gravity that does not lift due to buoyancy generated by stored rainwater. Preferably, a fitting structure or a locking structure is provided between the third port 3c and the closing member 3d as necessary so that the closing member 3d does not come off the third port 3c only by buoyancy. It is preferable. Further, the guide member 3e is not limited to a ball chain as long as it allows the closing member 3d to be attached and detached from above, and may be a bent product of wire. Furthermore, although the upper end of the guide member 3e of this embodiment is attached to the 1st opening | mouth 3a vicinity, the position which can be attached or detached from upper direction, for example, the lid | cover receiving part vicinity of the rain water gutter 1, the cover body 10, etc. In this way, when the upper end of the guide member 3e is attached to the vicinity of the lid receiving part of the rainwater tank 1 or the lid 10 or the like, even if the rainwater tank 1 is deeply buried, The closing member 3d can be attached and detached at a position close to, so that the hand does not reach the closing member 3d and a special tool is not required.

  Moreover, the elbow joint 21 mentioned above can also be used as the damming member 3 instead of the damming portion 3 having the above-described form. In this case, when draining the stored rainwater, the elbow joint 21 can be drained by rotating it 180 degrees about the reservoir pipe line 2.

  The storage pipe 2 and the joint 20, the storage pipe 2 and the elbow joint 21, and the storage pipe 2 and the damming portion 3 are all connected using an adhesive. Therefore, compared with the case where the storage pipe line 2 is simply inserted and connected to the insertion hole 1a, the respective members are firmly connected without a gap, so that there is no water leakage, and the inside of the storage pipe line 2 is much hardened. The rainwater stored in the water will not decrease. And the rainwater stored in this way is taken in by providing a water intake pump (not shown) in the opening part 2A and the 1st opening | mouth 3a of the damming part 3, and can be used effectively for watering a plant etc. .

  FIG. 8 is a schematic cross-sectional view showing a rainwater storage conduit structure according to another embodiment of the present invention.

  The rainwater storage pipe structure of the embodiment shown in FIGS. 1 to 7 described above stores rainwater inside the storage pipe 2 by providing a damming member 3 at one end (downstream side) of the storage pipe 2. In contrast, in the rainwater storage pipe structure of the present embodiment, the lower end position of the drain pipe 8 communicating with the outdoor drain pipe 9 is set from the top of the storage pipe 2 instead of the blocking member 3. In addition, rainwater is stored in the storage pipeline 2 by being disposed at a higher position. In the present embodiment, the drain pipe 8 serves as a discharge port for discharging rain water to the outside, and the rain water that has flowed into the storage pipe 2 reaches the lower end of the drain pipe 8 until the water level reaches the lower end of the drain pipe 8. It is also to be stored inside the rain gutter 1.

Further, in the rainwater storage conduit structure of the present embodiment, as shown in FIG. 8, a lid body 10 having a large number of permeation holes 10a is used. Therefore, rainwater that has fallen on the roof of the house is collected in the eaves 5 and flows down the fence 6 and flows into the rainwater tank 1 from the inflow pipe 7. 1 flows into the inside of the rainwater basin 1 from the penetration hole 10a of the lid 10 that covers the upper opening of 1.
In the case where the rainwater basket 1 is embedded in a place where there is a lot of mud sand or a place where a lot of insects such as mosquitoes are generated, a lid body 10 having no perforation hole 10a may be used. However, if the permeation hole 10a is covered with a net or the like, it is possible to suppress the intrusion of mud sand and the generation of insects such as mosquitoes, and other than the position above the filter member 4 of the lid 10 (inflow water from the permeation hole 10a) If the permeation hole 10a is perforated only at a position where it does not flow down to the filter member 4, it is possible to prevent the filter member 4 from being clogged or flowing into the storage pipe.

  Although the rainwater storage pipe structure having the above-described structure may cause some water leakage from the connection part (the peripheral edge of the insertion hole 1a) between the storage pipe 2 and the rainwater trough 1, it does not require time and effort to install the blocking member 3. The risk of water leakage can be minimized by reliably water-stopping only one part of the periphery of the insertion hole 1a. In addition, if the rainwater tank 1 at a place where there is a risk of water leakage is changed to a rainwater tank 1 shown in FIGS. 10 to 20 described later, the risk of water leakage is completely equal.

  FIG. 9 is a schematic sectional view showing a rainwater storage conduit structure according to still another embodiment of the present invention.

The rainwater storage pipe structure of the embodiment shown in FIG. 1 to FIG. 8 described above is that the piping facility embedded in the residential land communicates with the outdoor drainage pipe 9 connected to the public sewerage facility, etc. The rainwater storage pipeline structure according to the embodiment is a mode in which the piping facility in the residential land is not connected to the outdoor drain pipe 9 or the like and is completed only in the residential land. Therefore, no flow gradient is attached to the storage pipeline 2 of the present embodiment. Therefore, for convenience, either one is called one end (right side in the present embodiment) and the other is called the other end (left side in the present embodiment). In addition, in the rainwater tank 1 located between the rainwater tank 1 at one end and the rainwater tank 1 at the other end, unlike the embodiment described above, the storage pipe line 2 is not a substantially T-shaped cheese joint 20, It is connected to the elbow joint 21 having one storage pipe connection port 20b and pipe connection port 20a. Then, the inner peripheral surface of the curved cylindrical pipe of the elbow joint 21, and a portion having a height substantially the same as the top of the storage pipe 2 is an opening serving as a rainwater inflow port, an overflow port, or a water intake port. It is part 2A. As described above, the present invention can be established even if the storage pipe 2 connecting the rainwater tank 1 at one end and the rainwater tank 1 at the other end is not completely communicated.
In addition, in the rainwater tank 1 located between the rainwater tank 1 at one end and the rainwater tank 1 at the other end, the storage pipe line 2 may be connected to the above-described substantially T-shaped cheese joint 20. Needless to say, a flow gradient may be provided toward a place where water is taken (where a water intake pump is provided).

Since such a rainwater storage conduit structure is not in communication with the outdoor drainage pipe 9, it is necessary to provide the rainwater tank 1 with a function for allowing rainwater to permeate (discharge) into the surrounding ground. Therefore, in this embodiment, the rainwater tank 1 having a plurality of openings 1c perforated on the peripheral surface is used. At this time, the opening 1c of the rainwater tank 1 located in the middle is smaller than the opening 1c of the rainwater tank 1 located on the right side (the size may be about the size of an orifice). This is because, even if the inflow pipe 7 is not connected to the rainwater tank 1 located in the middle, the storage pipe line 2 located on the left side (the left storage pipe line 2 with respect to the rainwater tank 1 located in the middle) This is because the overflow water is easily stored in the storage pipe 2 located on the right side through the rainwater tank 1 located in the middle. In addition, since the water level of the rainwater tank 1 reaches the filter member 4 and flows into the storage pipe 2, the rainwater tank 1 to which the inflow pipe 7 is connected is replaced with a normal rainwater tank 1 in which the opening 1c is not perforated. If used, even a small amount of rainfall can be stored in the storage pipe 2.
In FIG. 9, for the sake of convenience, the rainwater tank 1 located in the middle and the rainwater tank 1 located on the right side are provided with a permeation function, but the inflow pipe 7 is connected to the rainwater tank 1 located in the middle. In that case, the rainwater tank 1 with the opening 1c drilled may be buried in the rainwater tank 1 located on the left side using a normal rainwater tank 1 with no opening 1c drilled in the middle. In such a case, there is a possibility that the permeation capacity may be insufficient, but the permeation capacity may be increased by increasing the capacity of the right-side rainwater tank 1 or increasing the infiltration space formed by crushed stones around the rainwater tank 1. It is possible to make up for the shortage and increase the amount that can be temporarily stored to prevent overflow of rainwater.

  As described above, the rainwater storage pipe structure according to the present invention can be used even when the plumbing equipment in the residential land is not connected to the outdoor drainage pipe 9 connected to the public sewerage facility or the like and is completed only in the residential land. By imparting an osmotic function to 1, rainwater that is effectively used for watering plants can be stored in the storage pipe 2.

  FIG. 10 is an exploded perspective view showing a rainwater tank according to an embodiment of the present invention, FIG. 11 is a cross-sectional view of the rainwater tank, and FIG. 12 is an explanatory view for explaining a groove formed on the bottom surface of the rainwater tank.

  The rainwater storage conduit structure of the present invention as described above may be constructed using the rainwater trough 1 shown in FIGS. In other words, the rainwater tank 1 is a synthetic resin rainwater tank 1 formed of polypropylene or vinyl chloride resin, and has a groove 1d formed on the bottom surface of the storage pipe 2 from below.

  The groove portion 1d is formed by cutting the bottom surface of the rainwater trough 1 into a substantially semicircular shape so that the storage pipe line 2 is accommodated. The groove part 1d is fitted over the storage pipe line 2 from above. Thus, the rainwater tank 1 is stably installed on the storage pipe 2, and in particular, the rainwater tank 1 can be made more reliable by forming the lower end of the rainwater tank 1 at the same height as the storage pipe 2 (joint 20). It can be installed stably. As shown in FIG. 12 (a), the rainwater trough 1 of this embodiment has two grooves 1d and 1d formed in a cross shape when viewed from the bottom, and the storage conduit 2 is disposed from all sides. In other words, it can be fitted and connected to the joint 20 shown in FIGS. 7A, 7B, 7C and the like.

  On the other hand, as shown in FIG. 12 (b), in the rainwater tank 1 formed so that the single groove 1 d penetrates the bottom surface of the rainwater tank 1, a joint 20 (cheese joint) is disposed below the rainwater tank 1. When used, it is preferably used. Further, as shown in FIG. 12 (c), the rainwater trough 1 in which one groove 1d ends partway through the bottom surface of the rainwater trough 1 is preferably used when the elbow joint 21 is used. The rainwater tank 1 shown in (c) has the best maintainability because the volume of the mud reservoir is large.

  An insertion hole 1e communicating with the inside of the rain water tank 1 is formed at the center of the groove 1d (the central part of the rain water tank 1). The pipe connection port 20a of the joint 20 is inserted through the inner peripheral surface of the insertion hole 1e without any gap, so that the storage pipe line 2 and the rainwater tank 1 are communicated with each other. An edge may be provided in the insertion hole 1e. In this case, regarding the relationship between the height of the edge and the height of the tube connection port 20a, the edge may be higher or lower when the tube connection port 20a is a receiving port. However, it is preferable to set the heights to approximately the same, since dust is likely to collect when there is a step. Moreover, when making it higher than the height of the pipe connection port 20a, the amount of storage increases by that height (the height of the overflow becomes higher). For example, the position is lower than the lower end of the opening of the filter member 4, etc. It may be adjusted in consideration of the amount of storage. On the other hand, when the tube connection port 20a is an insertion port, connection is not possible unless the tube connection port 20a protrudes, so the edge needs to be lower than the tube connection port 20a.

  In such a rainwater tank 1, a recessed portion inside the rainwater tank 1 generated by forming the groove 1 d is a mud reservoir where mud sand, dead leaves, and the like are accumulated. Although this mud reservoir may be used as it is as a mud reservoir, in this embodiment, a cleaning bucket body 1f having an outer surface shape along the mud reservoir is fitted into the mud reservoir from above. Therefore, when the rainwater tank 1 is maintained, it is possible to easily remove mud sand and dead leaves that have accumulated inside by simply removing the cleaning bucket body 1f from above, so that the maintainability is very good. In addition, since the tip portion (the back surface of the bottom surface) of the mud reservoir functions as a leg portion of the rainwater tank 1, stability when installed is improved.

  Next, a construction method for constructing the rainwater storage conduit structure of the present invention using the above members will be described.

First, the ground where the piping equipment having the above-described configuration is disposed is excavated, and the storage pipeline 2 is disposed in a piping groove (not shown) formed by the excavation. Then, the storage pipeline 2 and the joint 20 are bonded and connected using an adhesive. Next, the rain water tank 1 is filled with a sealing material 20c, and a rubber packing 20d is attached, and the rain water tank 1 is disposed so as to cover the joint 20. At this time, when a flow gradient is applied to the storage pipe 2, the rainwater tank 1 is fixed so that the upper end of the rainwater tank 1 is parallel to the ground. The rainwater tank 1 may be used in which a groove 1d that contacts the storage pipe 2 of the rainwater tank 1 has an inclination corresponding to the flow gradient of the storage pipe 2.
Both the sealing material 20c and the rubber packing 20d may be attached as in the present embodiment, or only one of them may be attached.

  As described above, when the rainwater tank 1 is disposed, the damming member 3 is connected to one end of the storage pipe line 2 using an adhesive, and the elbow joint 21 is connected to the other end. The filter member 4 is attached to the elbow joint 21. Thus, the storage pipeline 2 and the joint 20, the storage pipeline 2 and the elbow joint 21, and the storage pipeline 2 and the dam member 3 are all connected using an adhesive, so that the storage pipeline 2 is simply connected. Compared with the case of inserting and connecting to the insertion hole 1a, each member is firmly connected without a gap, so there is no water leakage, and rainwater stored inside the storage pipe line 2 is reduced. There is no end.

  Finally, the ground is backfilled after being cured with a temporary lid (not shown) such as a curing lid so that the earth and sand of the backfill does not enter the inside of the rainwater tank 1. In the case where the rainwater basket 1 is an infiltrated tank having a perforated opening 1c, it is backfilled to some extent with soil and sand, and an area to be filled with crushed stone is partitioned with a water-permeable sheet and then filled with crushed stone. Then, by removing the temporary lid of the rainwater tank 1 and covering the upper opening of the rainwater tank 1 with the lid 10, the rainwater storage conduit structure is completed. The rainwater stored in this rainwater storage pipe structure is taken in by providing a water intake pump (not shown) at the opening 2A or the first port 3a of the damming member 3, and is effectively used for watering the plants. be able to. This water intake pump may be installed permanently, or the lid 10 of the rainwater tank 1 may be removed and water taken in only during use.

  The rainwater tank 1 having the above configuration can be stably installed by fitting the groove portion 1d on the storage pipe 2 from above, and in addition, the storage pipe 2 Since it is possible to install the rainwater basket 1 after the installation in the residential land, the workability is also excellent.

  FIG. 13 is a cross-sectional view showing a rainwater tank according to another embodiment of the present invention.

  As shown in FIG. 13, the rainwater trough 1 of this embodiment has at least a first connection port 1i and a second connection port 1j, and the first connection port 1i is formed on the bottom surface of the dredger. At the same time, the second connection port 1j is formed on the lower side surface of the first connection port 1i, and the first connection port 1i and the second connection port 1j are closed to the storage pipe line 2 which is closed. It communicates with.

  The storage pipes 2 and 2 are connected to the second connection port 1j from both the left and right sides. The storage pipes 2 and 2 are thus sealed and communicated with the storage pipe 2. Further, the filter member 4 is connected to the first connection port 1i, and when the storage pipe structure is constructed using such a rainwater trough 1, it is not necessary to use the joint 20 or the elbow joint 21. The gap between the insertion hole 1a and the pipe connection port 20a is eliminated, and there is no risk of water leakage from the insertion hole 1a, and the storage pipe line 2 is connected to the joint 20 or the elbow joint 21 in the rainwater trough 1. There is an advantage that such work is not required.

  14 to 19 show a rainwater tank according to still another embodiment of the present invention, and FIG. 20 is a front view showing a rainwater tank according to still another embodiment of the present invention.

  The rainwater tank 1 of the embodiment shown in FIGS. 14 to 19 is formed with an insertion hole 1e communicating with the inside of the rainwater tank 1 being deviated to the rear side, and a groove portion 1d in which the storage pipe 2 is accommodated from below. However, it is formed on the bottom surface of the rain gutter 1 in three directions (front direction, right direction, left direction). As described above, the rain gutter 1 is formed so that the insertion hole 1e is deviated rearward, so that the left and right groove portions 1d and 1d communicating with the insertion hole 1e are similarly deviated rearward. Is formed.

As shown in FIG. 19, the upper end portion of the insertion hole 1e of the rainwater trough 1 has an edge that protrudes inward and downward, and the pipe connection port 20a of the joint 20 is formed in the recess formed by the edge. It is supposed to be inserted. When the pipe connection port 20a of the joint 20 is inserted, in order to improve water-stopping and adhesion, the sealing material 20c is filled and a rubber packing 20d is attached. Further, as indicated by the phantom line in FIG. 19, the filter member 4 is attached to the insertion hole 1 e of the rainwater tank 1. The filter member 4 attached to the rainwater trough 1 of the present embodiment is a net-like pipe, and the filter member 4 is erected by inserting the lower end of the filter member 4 until it contacts the bottom surface of the joint 20. Has been. The upper end of the filter member 4 is in contact with or slightly below the lid 10 of the rainwater tank 1, and thus the filter member 4 is attached to the bottom surface of the lid 10 of the rainwater tank 1 and the joint 20. By attaching the filter member 4 so as to be sandwiched by the filter member 4, the filter member 4 can be stably attached and there is no gap for the foreign matter to directly enter, so that foreign matters such as dead leaves do not flow into the storage pipe 2.
Since the other structure of the rainwater basket 1 of this embodiment is the same as that of the rainwater tank 1 of embodiment shown in FIGS. 10-13 mentioned above, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  As described above, the rainwater trough 1 in which the insertion hole 1e and the left and right groove portions 1d and 1d are deviated to the rear side is formed with the mud reservoir portion being also deviated to one side. So it has excellent maintainability.

Further, the rainwater tank 1 shown in FIG. 20 has an insertion hole 1e communicating with the inside of the rainwater tank 1 and is formed to be deviated to the left rear side, and a groove 1d in which the storage pipe 2 is accommodated from below is provided with rainwater. It is formed on the bottom surface of the ridge 1 in two directions (forward direction, right direction). The forward groove 1d is formed to be deviated on the left side of the rain gutter 1, and the right groove 1d is formed to be deviated on the rear side of the rain gutter 1. A space sandwiched between the two grooves 1d and 1d is a mud reservoir.
Since the other structure of the rainwater basket 1 of this embodiment is the same as that of the rainwater tank 1 of embodiment shown in FIGS. 14-19 mentioned above, the same code | symbol is attached | subjected to the same member and description is abbreviate | omitted.

  The rainwater trough 1 formed by shifting the insertion hole 1e to the left rear side as described above is formed with the mud reservoir portion being deviated to one side, and the deepest portion of the mud reservoir portion is one place. Since the area can be increased by concentrating on, maintenance is very good.

  As mentioned above, although the typical embodiment of the rainwater storage conduit structure and rainwater trough of the present invention has been described in detail, the present invention is not limited to this, and various design changes can be allowed. For example, the rain water tank 1 may be composed of two members, an upper half and a lower half, and the rain water tank 1 in which the upper half is rotatable with respect to the lower half may be used. When the rainwater storage pipe structure is constructed using such a rainwater tank 1, even if the insertion hole 1a is previously drilled in the upper half, by rotating the upper half of the rainwater tank 1, various angles can be obtained. The storage pipe line 2 can be connected.

DESCRIPTION OF SYMBOLS 1 Rain water tank 1a Insertion hole 1b Rubber packing 1c Opening 1d Groove part 1e Insertion hole 1f Cleaning bucket 1g Arch part 1h Fitting hole 1i First connection port 1j Second connection port 10 Lid 10a Penetration hole 2 Storage tube Path 2A Opening 20 Joint 20a Pipe connection port 20b Storage pipe connection port 20c Sealing material 20d Rubber packing 21 Elbow joint 3 Damping member 3a First port (discharge port)
3b 2nd port 3c 3rd port 3d Closure member 3e Guide member 3f Protrusion 4 Filter member 5 Eaves 6 ７ 7 Inflow pipe 8 Drain pipe 9 Outdoor drain pipe

Claims (7)

A rainwater storage conduit structure for storing rainwater inside a storage conduit connecting a plurality of rainwater traps buried in the ground,
A discharge port for discharging rainwater to the outside is provided in the vicinity of one end of the storage pipeline and higher than the top of the storage pipeline, and the rainwater flowing into the storage pipeline has a water level at the discharge port. Until it reaches the inside of the storage pipeline,
A rainwater tank buried on the other end side relative to a rainwater tank at one end of the storage pipe provided with the discharge port, the rainwater tank located between the rainwater tank at one end and the rainwater tank at the other end, or / And in the rainwater basin at the other end, an opening is formed substantially at the top of the storage pipeline ,
From the periphery of the opening, there is provided an extension port at which the base end rises upward,
A rainwater storage conduit structure , wherein an insertion hole is formed in a bottom surface of the rainwater tank, and the extension port is inserted through the insertion hole without any gap .   A damming member is provided at one end of the storage pipe, which includes at least a first port directed upward and a second port to which one end of the storage pipe is connected. The rainwater storage conduit structure according to claim 1, wherein the drainage is a discharge port for discharging rainwater to the outside. Rainwater reservoir piping structure according to claim 1 or claim 2, characterized in that the extension設口is a pipe connecting port. The rainwater storage conduit structure according to claim 3 , wherein a filter member is attached to the pipe connection port. In the rainwater tank buried between the rainwater tank at one end and the rainwater tank at the other end of the storage pipe, the storage pipe is connected through a joint having a plurality of storage pipe connection ports and the opening. The rainwater storage conduit structure according to any one of claims 1 to 4 , wherein the rainwater storage conduit structure is provided. The rainwater storage pipe structure according to any one of claims 1 to 5, wherein the bottom surface of the rainwater tank has a shape along substantially the upper half of the storage pipe. A rainwater tank used in the rainwater storage pipe structure according to any one of claims 1 to 6 ,
A rainwater tank having a groove portion in which a storage pipe line is accommodated from below on the bottom surface and an insertion hole communicating with the inside of the rainwater tank is formed in the groove portion.

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