JP2016183545A - Drainage auxiliary member for rainwater basin and rainwater basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mainly easily switch a drainage system and a rainwater drainage level.SOLUTION: A basin body 5 for collecting rainwater is provided with an intake position changing pipe 23 installable to a rainwater basin 4 connecting a sewage outflow pipe 7 for sending the collected rainwater to a sewer pipe 6 and a facility outflow pipe 9 for sending to a rainwater permeation-storage facility 8 in respectively different connection heights L1 and L2, and capable of changing at least one rainwater drainage level 22 of the sewage outflow pipe 7 and the facility outflow pipe 9.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a drainage auxiliary member for rainwater tanks and a rainwater tank.

  Side grooves and the like are provided on the side of the road. This gutter is for collecting rainwater that has fallen on the road and sending it to the rainwater well. And this rainwater basin is mainly composed of a casket body that collects rainwater. In this casket body, the sewage outflow pipe that sends the collected rainwater to the sewage pipe and the facility that sends it to the stormwater infiltration and storage facility The outflow pipes are connected at different connection heights (see, for example, Patent Document 1).

  The rainwater tank described above is configured so that rainwater collected in the main body of the rainwater can be sent from the sewage outflow pipe to the sewage pipe or from the facility outflow pipe to the rainwater infiltration / storage facility. That is, when the amount of rainwater reaches the connection height of the sewage outflow pipe or facility outflow pipe to the dredger body, rainwater is sent from the dredge body to the sewer pipe or rainwater infiltration / storage facility.

  At this time, the connection heights of the sewage outflow pipe and the facility outflow pipe with respect to the main body are made different. As a result, when the connection height of the sewage outflow pipe is made lower than the connection height of the facility outflow pipe, the rainwater is discharged to the sewage pipe first. Discharge to infiltration and storage facilities (peak cut method). On the other hand, if the connection height of the sewage outflow pipe is higher than the connection height of the facility outflow pipe, the rainwater is discharged to the stormwater infiltration / storage facility first, and then treated by the stormwater infiltration / storage facility. When it can no longer be completed, it will be discharged to the sewer pipe (base cut method). And when installing rainwater troughs, select one of the drainage methods according to the rainfall situation of each region, so that rainwater infiltration and storage facilities can be used appropriately, and the burden of sewer pipes is reduced. It is designed to be reduced.

JP2012-072622A

  In recent years, due to changes in the global environment, etc., it has happened that rain conditions different from those at the time of installation occur. However, once the rainwater trough is installed, the drainage method described above is fixed, so that it was not possible to switch the drainage method according to environmental changes later.

  Accordingly, the main object of the present invention is to solve the above-described problems.

In order to solve the above problems, the present invention provides:
Installed on the main body of the rainwater collecting tank where the collected rainwater is sent to the sewer pipe and the facility outflow pipe is sent to the rainwater infiltration / storage facility at different connection heights. Possible,
An intake position changing pipe capable of changing the rainwater drainage level of at least one of the sewage outflow pipe and the facility outflow pipe is provided.

  According to the present invention, the above configuration makes it possible to easily switch the drainage method and the rainwater drainage level.

It is sectional drawing which shows the mode of the underground of the road periphery for demonstrating the drainage auxiliary member for rain water traps concerning Example 1. FIG. It is sectional drawing of the rainwater tank periphery provided with the drainage auxiliary member for rainwater tanks. It is sectional drawing which shows the other usage pattern of the drainage auxiliary member for rain water traps of FIG. It is an expanded sectional view of the drainage auxiliary member for rainwater tanks of FIG. It is sectional drawing of the rainwater tank periphery provided with the other drainage auxiliary member for rainwater tanks. It is sectional drawing which shows the other usage pattern of the drainage auxiliary member for rain water traps of FIG. FIG. 6 is a cross-sectional view around a rainwater basin similar to FIG. 5, showing another example of a position holder. It is sectional drawing which shows the other usage pattern of the drainage auxiliary member for rain water traps of FIG. It is sectional drawing of the rainwater tank periphery provided with the drainage auxiliary member for rainwater tanks concerning Example 2. FIG. It is sectional drawing which shows the other usage pattern of the drainage auxiliary member for rain water traps of FIG. It is a top view of FIG. 9, FIG. It is a top view of FIG. 9, FIG. 10 which shows the state which changed the attachment angle of the drainage auxiliary member for rainwater traps.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 8 are for explaining this embodiment. Of these, FIGS. 1 to 8 relate to the first embodiment, and FIGS. 9 to 12 relate to the second embodiment.

<Configuration> The configuration will be described below.
FIG. 1 is a cross-sectional view showing an underground structure around the road 1. The road surface of the road 1 is actually high at the center and low at both ends, and a curb (curbstone block 2) and a side groove (U-shaped block) are installed at both ends of the road 1. And the rain gutter 4 is embed | buried partially with respect to the underground of this curb and the lower part of a ditch. And the rainwater which fell on the road 1 is sent to the rainwater basin 4 along a curb or a ditch.

  The rainwater basin 4 is mainly composed of a basin body 5 that collects rainwater. The basin body 5 includes a sewage outflow pipe 7 for sending the collected rainwater to the sewage pipe 6, a rainwater infiltration / The facility outflow pipe 9 to be sent to the storage facility 8 is connected at different connection heights L1 and L2.

  Here, the sewer pipe 6 is embedded along the road 1 at a position such as the center of the road 1. Rainwater collected in the sewage pipe 6 is sent to a public sewage treatment facility or the like for final treatment. The rainwater infiltration / storage facility 8 is appropriately embedded in a position such as a side of the road 1 and processes such as temporarily collecting rainwater and infiltrating it into the ground or storing rainwater. Is supposed to do. In this case, a plurality of filling blocks 11 each having a box frame shape are stacked inside the space constituting the rainwater infiltration / storage facility 8. The filling block 11 is designed to create a path through which rainwater flows and flows down, and by combining a plurality of the filling blocks 11, a long path is created in the facility. Is slowly flowing down.

  In addition to the above, various types of rainwater infiltration / storage facilities 8 exist. Further, the rainwater infiltration / storage facility 8 can widely include facilities capable of temporarily treating rainwater.

  And with respect to the above basic or whole structure, the drainage auxiliary member for rainwater traps of this embodiment is as follows.

(1-1) For example, as shown in FIG. 2 (base cut method) and FIG. 3 (peak cut method), sewage outflow that sends collected rainwater to the sewer pipe 6 with respect to the main body 5 that collects rainwater. When the rainwater trough 4 is provided in which the pipe 7 and the facility outflow pipe 9 to be sent to the rainwater infiltration / storage facility 8 are connected at different connection heights L1 and L2, respectively.
It can be installed for this rainwater tank 4
An intake position changing pipe 23 capable of changing the rainwater drainage level 22 of at least one of the sewage outflow pipe 7 and the facility outflow pipe 9 is provided.

  Here, the thing of FIG. 2 makes the connection height L1 of the outflow pipe 7 for sewage higher than the connection height L2 of the outflow pipe 9 for facilities (base cut system). Moreover, the thing of FIG. 3 makes the connection height L1 of the outflow pipe 7 for sewage lower than the connection height L2 of the outflow pipe 9 for facilities (peak cut system). The take-in position changing pipe 23 can be a resin or metal pipe member. The take-in position changing pipe 23 is always provided inside the bag main body 5.

  (1-2) More specifically, the take-in position changing pipe 23 is capable of adjusting the rainwater drainage level 22 with an extension / contraction part 31 (see FIGS. 2 to 4) or a bending / extension part 32 (see FIGS. 5 and 6). ).

  Here, the expansion-contraction part 31 is provided in the middle of the taking-in position change pipe | tube 23, for example, as shown in FIG. In this case, the take-in position changing pipe 23 has two pipe members (in this case, a straight pipe 35 located on the upper side and an L-shaped part located on the lower side, which are fitted to each other so that the fitting amount can be adjusted. Tube elbow 36). The expansion / contraction part 31 is formed in the fitting part (between the lower end part of the straight pipe 35 and the upper end part of the pipe elbow 36) of two pipe members. A seal member 37 is interposed between the two pipe members constituting the expandable portion 31. In this case, the take-in position changing pipe 23 is a hard resin pipe using hard vinyl chloride or hard polyester.

  Further, for example, as shown in FIGS. 5 and 6, the take-in position changing tube 23 may be a flexible flexible tube so that the take-in position changing tube 23 as a whole is bent and extended.

  (1-3) As shown in FIG. 4, the intake position changing pipe 23 has a detachable portion 41 that can be sealed with respect to the sewage outflow pipe 7 or the facility outflow pipe 9.

  Here, the detachable portion 41 is formed at the end (lower end) of the take-in position changing tube 23. The attachment / detachment portion 41 is an outlet portion that can be fitted into the sewage outflow pipe 7 or the facility outflow pipe 9. The detachable portion 41 is inclined slightly forward and downward from the horizontal in consideration of the drainage gradient. A seal member 43 is fitted and installed on the outer periphery of the opening portion as necessary.

  An attachment may be attached to the detachable portion 41 according to the diameter of the sewage outflow pipe 7 or the facility outflow pipe 9. Further, this attachment may be constituted by the seal member 43. Furthermore, a tapered introduction taper portion 44 for guiding the fitting to the sewage outflow pipe 7 or the facility outflow pipe 9 may be formed on the outer periphery on the distal end side of the detachable portion 41.

  (1-4) The intake position changing pipe 23 has a horizontally adjustable portion 52 that makes the direction of the rainwater intake 51 horizontal.

  Here, the rainwater intake 51 is the upper end of the intake position changing pipe 23. The horizontal adjustable portion 52 may be anything as long as it can direct the rainwater intake 51 in a horizontal direction. For example, in the case of FIGS. 2 to 4, since the take-in position changing tube 23 is a hard resin tube, a bellows-like bent as a horizontally adjustable portion 52 between the main body portion of the tube elbow 36 and the detachable portion 41. A possible portion 53 is provided. The bellows-like bendable portion 53 can also be used as a seal for the detachable portion 41.

  5 and 6, since the take-in position changing tube 23 is a flexible flexible tube, the entire take-in position changing tube 23 is a horizontally adjustable portion 52. In the figure, the rainwater intake 51 is used without being horizontal, but it is needless to say that the direction of the rainwater intake 51 can be horizontal.

  (1-5) A position holder 61 that can hold the position of the take-in position changing pipe 23 is provided.

  Here, for example, in the case of FIGS. 2 and 3, the position holder 61 is a support 62 that supports the lower portion of the take-in position changing pipe 23 (the pipe elbow 36) from below.

  5 and 6, the position holder 61 is a support 63 that supports the upper part (upper end part, etc.) of the flexible take-in position changing pipe 23 from below. In this case, the support 63 can be extended and contracted so that the height of the rainwater intake 51 can be adjusted (expandable support). For example, the support tool 63 is configured such that two support members 63a and 63b extending vertically are screwed to each other (screw fixing portion 63c), and can be expanded and contracted by changing the screwing positions of the two support members 63a and 63b. (Change the height). At least one of the support members 63a or 63b has a plurality of screw holes or has a long hole extending vertically. You may provide the floor support part 64 in the lower end part of the support tool 63 so that it can become independent. Note that the above is the same for FIGS. 2 and 3.

  Furthermore, in the case of FIG. 7, FIG. 8, the position holding tool 61 is made into the hanging tool 66 which hangs the upper part (upper end part etc.) of the flexible taking-in position change pipe | tube 23 from the top. The hanging tool 66 may be a cord-like member such as a wire or a rod-like member such as a rod. For example, the hanging tool 66 may be hung from the lid portion of the rainwater basket 4. In this case, the hanging tool 66 can be extended and contracted (expandable hanging tool). When the hanging tool 66 is a cord-like member, the hanging tool 66 can be expanded and contracted by providing a winder 67 at an end portion or an intermediate portion, for example. Moreover, when it is set as a rod-shaped member, the hanging tool 66 can be extended and contracted by providing a length adjusting unit such as a turnbuckle.

  <Effect> According to this embodiment, the following effects can be obtained.

The rainwater tank 4 can send rainwater collected in the main body 5 at the time of rainfall from the sewage outflow pipe 7 to the sewage pipe 6 or from the facility outflow pipe 9 to the rainwater infiltration / storage facility 8. Yes. When the amount of rainwater reaches the connection heights L1 and L2 of the sewage outflow pipe 7 and the facility outflow pipe 9 with respect to the dredge body 5, the rainwater is transferred from the dredge body 5 to the sewage pipe 6 and the rainwater infiltration / storage facility 8. To send. At this time, the connection heights L1 and L2 of the sewage outflow pipe 7 and the facility outflow pipe 9 with respect to the main body 5 are made different. Thereby, when the connection height L1 of the sewage outflow pipe 7 is made lower than the connection height L2 of the facility outflow pipe 9, the rainwater is discharged to the sewage pipe 6 first, and then the sewage pipe 6 is treated. When it can no longer be exhausted, it will be discharged into the rainwater infiltration / storage facility 8 (peak cut method).
On the other hand, when the connection height L1 of the sewage outflow pipe 7 is higher than the connection height L2 of the facility outflow pipe 9, the rainwater is discharged to the rainwater infiltration / storage facility 8 first, and then the rainwater infiltration -When the storage facility 8 can no longer be processed, it is discharged to the sewer pipe 6 (base cut method).
Then, when installing the rainwater trough 4, by selecting either drainage method or rainwater drainage level 22 according to the rainfall situation of each region, the rainwater infiltration / storage facility 8 can be used appropriately. The load on the water pipe 6 is reduced.

  In recent years, due to changes in the global environment and the like, a situation in which a different rain situation from that at the time of installation has occurred. However, once the rainwater trough 4 is installed, the drainage method described above is fixed, so that it is not possible to switch the drainage method according to environmental changes later.

  (Operational Effect 1-1) Therefore, in this embodiment, the take-in position changing pipe 23 is installed inside the bag main body 5. By using the intake position changing pipe 23, the rainwater drainage level 22 of at least one of the sewage outflow pipe 7 and the facility outflow pipe 9 can be changed (increased). Thereby, the outflow timing of rainwater can be changed (delayed) for the sewage outflow pipe 7 or the facility outflow pipe 9 in which the rainwater drainage level 22 is changed.

  At this time, by making the rainwater drainage level 22 of one of the sewage outflow pipe 7 or the facility outflow pipe 9 higher than the other connection height L1, L2 by the intake position changing pipe 23, The rainwater drainage level 22 can be easily changed. Therefore, even after the installation of the rainwater trough 4, it is possible to switch to the optimal drainage method or the rainwater drainage level 22 according to the environmental change. As a result, it is possible to reduce the burden on the sewer pipe 6 by making full use of the capacity of the rainwater infiltration / storage facility 8.

  (Function 1-2) The expansion / contraction part 31 or the bending / extending part 32 is provided in the take-in position changing pipe 23. Accordingly, the rainwater drainage level 22 of the sewage outflow pipe 7 or the facility outflow pipe 9 is set by the intake position change pipe 23 by extending or contracting or extending the intake position change pipe 23 by the expansion / contraction part 31 or the bending / extension part 32. Or can be adjusted. Therefore, the rainwater outflow timing from the sewage outflow pipe 7 to the sewage pipe 6 or the outflow timing of rainwater from the facility outflow pipe 9 to the rainwater infiltration / storage facility 8 can be arbitrarily changed, and the intake position can be changed. The tube 23 can be made convenient so that it can be used according to the situation at the site.

  (Effect 1-3) The taking-in position changing tube 23 includes an attaching / detaching portion 41. As a result, the intake position changing pipe 23 can be used by being attached to the sewage outflow pipe 7 or the facility outflow pipe 9 if necessary. It will be possible to return. At this time, since the attaching / detaching portion 41 has a sealing function, it is possible to ensure water-stopping between the intake position changing pipe 23 and the sewage outflow pipe 7 or the facility outflow pipe 9. The position change tube 23 can be used stably. Moreover, since the taking-in position changing pipe 23 has the detachable portion 41, it can be widely applied to various rainwater tanks 4.

  (Effect 1-4) The horizontal adjustment possible part 52 was provided in the taking-in position change pipe | tube 23. FIG. Each of the sewage outflow pipe 7 and the facility outflow pipe 9 has a drainage gradient. The drainage gradient is determined by the installation situation of the rainwater tank 4, the rainwater tank 4 and the sewer pipe 6, the rainwater infiltration / storage facility 8, and the like. The position varies greatly depending on the positional relationship, and the variation is large. Therefore, by providing the level adjustable part 52, the direction of the rain water intake 51 of the intake position changing pipe 23 attached to the sewage outflow pipe 7 or the facility outflow pipe 9 is adjusted by the level adjustable part 52. Can be level. Thus, by making the direction of the rainwater intake 51 horizontal, it becomes possible to accurately set the water level of the rainwater entering the intake position changing pipe 23. Moreover, when it reaches the set water level, it can be made to flow into the intake position changing pipe 23 at a stretch.

  (Effect 1-5) The position holder 61 with respect to the taking-in position changing pipe 23 is provided. Thereby, the position of the take-in position changing tube 23 can be held inside the bag main body 5. Therefore, it is possible to prevent the take-in position changing pipe 23 from being moved or detached due to the momentum of rainwater flowing into the bag main body 5.

9 to 12 are for explaining this embodiment.
<Configuration> The configuration will be described below.
(2-1) As shown in FIGS. 9 and 10, the rainwater drainage auxiliary member of this embodiment is a drainage outflow pipe 7 for sending the collected rainwater to the sewer pipe 6 in the main body 5 for collecting rainwater. And the outflow pipe 9 for the facility to be sent to the rainwater infiltration / storage facility 8 can be installed on the rainwater trough 4 connected at different connection heights L1 and L2, respectively.
While partitioning the inside of the main body 5 into a water storage space 71 on the sewage outflow pipe 7 side and a water storage space 72 on the facility outflow pipe 9 side,
A dam member 73 capable of changing the outflow order of rainwater from the main body 5 to the sewage outflow pipe 7 and the facility outflow pipe 9 is provided.

  Here, in order to change the outflow order of the rainwater, the weir member 73 is positioned higher than the upper part of the sewage outflow pipe 7 and the facility outflow pipe 9 where the connection heights L1 and L2 are higher. It is necessary to be able to block rainwater. The dam member 73 may be any type, but in this case, the dam member 73 is a flat wall-like member extending in the diameter direction of the ridge body 5. The water storage spaces 71 and 72 are partitioned into the same bottom area by the flat weir member 73 extending in the diameter direction. However, the weir member 73 is formed into a flat wall shape extending in a direction other than the diameter direction of the main body 5 or a curved or bent shape (or a bent shape) or the like. The spaces 71 and 72 may be partitioned into different bottom areas. A seal member and the like capable of stopping water with respect to the main body 5 are provided at a lower portion and both side portions of the weir member 73. Alternatively, after the dam member 73 is installed, the lower portion and both side portions of the dam member 73 are sealed with a sealing material.

  (2-2) The dam member 73 can be adjusted in height.

  Here, the height-adjustable weir member 73 may include, for example, a height-adjustable elevating wall portion 75. On both sides of the elevating / lowering wall portion 75, a seal member that can stop water with respect to the bag main body 5 is provided. Or after installation of the dam member 73 and adjustment of the height of the elevating wall portion 75, both sides of the elevating wall portion 75 are sealed with a sealing material together with seals such as a lower portion and both side portions of the dam member 73.

  In this case, the main body of the dam member 73 has a double wall structure, and the above-described elevating wall portion 75 is inserted and installed between the main bodies of the dam member 73 having the double wall structure. The raising / lowering wall part 75 can be made to project a required amount from the part. The height adjustment and fixing of the elevating wall portion 75 with respect to the dam member 73 is performed by fixing the dam member 73 and the elevating wall portion 75 with a fastening fixing member 76 such as a bolt and a nut. Therefore, attachment holes for fastening by the fastening and fixing member 76 are formed in the dam member 73 and the elevating wall portion 75. In this case, one or a plurality of mounting holes for the weir member 73 are provided. A plurality of mounting holes in the elevating wall portion 75 are provided in the vertical direction in accordance with the positions of the mounting holes in the dam member 73. Or the attachment hole of the raising / lowering wall part 75 is good also as a long hole etc. extended in an up-down direction. A height adjusting mechanism is configured by the elevating wall 75, the fastening and fixing member 76, the mounting hole, and the like.

  (2-3) The dam member 73 has a rectifying plate 81 that adjusts the distribution of rainwater flowing into the main body 5 with respect to the water storage spaces 71 and 72 at the top.

  Here, the rectifying plate 81 may be any type. In this case, the rectifying plate 81 covers the upper part of the one water storage space 71, 72 to the one water storage space 71, 72. Inflow regulating members that regulate the inflow of rainwater. The rectifying plate 81 is an inclined guide plate that guides rainwater from one water storage space 71, 72 toward the other water storage space 72, 71. In this case, the rectifying plate 81 is integrally provided on the upper part of the above-described lifting wall 75.

  (2-4) The dam member 73 is configured to be able to stand by itself.

  Here, the self-supporting dam member 73 is integrally provided with a horizontal support leg 85 at a lower portion thereof as a self-supporting support portion.

  <Effect> According to this embodiment, the following effects can be obtained.

  (Operational Effect 2-1) The inside of the main body 5 is partitioned by the dam member 73 into a water storage space 71 on the sewage outflow pipe 7 side and a water storage space 72 on the facility outflow pipe 9 side. As a result, rainwater is separately stored in the water storage space 71 on the sewage outflow pipe 7 side and the water storage space 72 on the facility outflow pipe 9 side, and the amount of rainwater stored is quickly reduced. The rainwater can be discharged from the water storage spaces 71 and 72 on the side reaching the connection height L1 of 7 or the connection height L2 of the facility outflow pipe 9 to the external sewer pipe 6 or the rainwater infiltration / storage facility 8 first. . For example, when the weir member 73 has a flat wall shape extending in the diameter direction of the main body 5, the distribution of rainwater to each of the water storage spaces 71 and 72 is shown in FIG. 11 (parallel arrangement) and FIG. 12 (inclined arrangement). As shown in the above, it can be changed by setting / adjusting the installation angle of the weir member 73 with respect to the rainwater inflow port 86 (for example, a connecting part such as a side groove) to the main body 5.

  Even if the actual rainfall situation or the amount of rainwater flowing into the dredge body 5 is different from the assumption at the time of design, a weir member 73 is provided inside the dredge body 5 to provide a rainwater outflow sequence. By changing (the order of outflow), it becomes possible to switch and use the drainage system, and it is possible to make the most of the capacity of the rainwater infiltration / storage facility 8.

  In addition, in order to switch the drainage method, the water storage spaces 71 and 72 on the side where the connection height L1 of the sewage outflow pipe 7 to the main body 5 or the connection height L2 of the facility outflow pipe 9 is higher (in the case of FIG. 9). It is sufficient to distribute a large amount of rainwater to the water storage space 71 side, in the case of FIG. 10, to the water storage space 72 side.

  (Operation Effect 2-2) The height of the weir member 73 can be adjusted. Thereby, the capacity of the water storage space 71 on the sewage outflow pipe 7 side and the water storage space 72 on the facility outflow pipe 9 side is changed depending on the height of the dam member 73, so that the water was filled first (one). The timing of overflow of rainwater from the water storage spaces 71, 72 to the other water storage spaces 72, 71 can be changed. As a result, after rainwater flows out from one of the water storage spaces 71 and 72 to the external sewage pipe 6 or the rainwater infiltration / storage facility 8, the external sewage pipe 6 or the rainwater infiltration / storage facility from the other water storage space 72,71. It is possible to adjust the timing until the rainwater flows out to 8.

  Specifically, by lowering the weir member 73, the timing of overflow of rainwater from one water storage space 71, 72 to the other water storage space 72, 71 can be advanced. Conversely, by raising the weir member 73, the timing of overflow of rainwater from one water storage space 71, 72 to the other water storage space 72, 71 can be delayed.

  (Operation 2-3) The rectifying plate 81 is provided on the weir member 73. Thereby, it becomes possible to adjust the distribution with respect to each water storage space 71 and 72 of the rainwater flowing into the main body 5 by the rectifying plate 81. As a result, adjusting or changing the timing at which rainwater flows out to the sewage pipe 6 or the rainwater infiltration / storage facility 8 connected to the water storage spaces 71 and 72 via the sewage outflow pipe 7 or the facility outflow pipe 9, respectively. Can do.

  Specifically, as shown in FIG. 9, the sewage outflow pipe 7 is rectified in the case of a base cut method (L1> L2) in which the connection height L1 to the dredger main body 5 is higher than the facility outflow pipe 9. The plate 81 allows most of the rainwater to be distributed to the water storage space 71 on the sewage outflow pipe 7 side, so that it is possible to switch to the peak cut method in which rainwater is discharged to the sewage pipe 6 first. .

  On the contrary, as shown in FIG. 10, in the case of the peak cut method in which the facility outlet pipe 9 has a connection height L2 to the dredger body 5 higher than that of the sewage outlet pipe 7 (L2> L1), the rectifying plate 81 By allocating most of the rainwater to the water storage space 72 on the facility outflow pipe 9 side, it is possible to switch to the base cut method in which rainwater is discharged to the rainwater infiltration / storage facility 8 first. Become.

  (Operational Effect 2-4) The dam member 73 can be made independent. Thereby, the dam member 73 can be set in a self-supporting state inside the main body 5 and the dam member 73 can be easily and reliably fixed to the main body 5 using concrete or the like. It is possible to eliminate the need to prepare a separate support member for fixing 73.

  Then, the sewage outflow pipe 7 that sends the collected rainwater to the sewer pipe 6 and the facility outflow pipe 9 that sends the collected rainwater to the rainwater infiltration / storage facility 8 are connected to the main body 4 that collects the rainwater, respectively, at different connection heights L1,. By installing the rain drainage drainage auxiliary member (take-in position change pipe 23, weir member 73, etc.) of each of the above embodiments for the rainwater tank connected at L2, the drainage system and rainwater drainage level as described above. Can be switched.

  As mentioned above, although embodiment of this invention has been explained in full detail with drawing, embodiment is only an illustration of this invention. Therefore, the present invention is not limited only to the configuration of the embodiment, and it goes without saying that design changes and the like within a scope not departing from the gist of the present invention are included in the present invention. Further, for example, when each embodiment includes a plurality of configurations, it is a matter of course that possible combinations of these configurations are included even if not specifically described. In addition, in the case where a plurality of examples and modifications are disclosed in the embodiment as those of the present invention, possible combinations of combinations extending over these are included even if not specifically described. Of course. Further, the configuration depicted in the drawings is of course included even if not particularly described. Further, when there is a term of “etc.”, it is used in the sense that the equivalent is included. In addition, when there are terms such as “almost”, “about”, “degree”, etc., they are used in the sense that they include those in the range and accuracy recognized by common sense.

4 Rainwater trough 5 Basin body 6 Sewage pipe 7 Sewage outflow pipe 8 Rainwater infiltration / storage facility 9 Facility outflow pipe 22 Rainwater drainage level 23 Intake position change pipe 31 Telescopic part 32 Bending / extending part 41 Detachable part 52 Horizontally adjustable part 61 Position holder 71 Water storage space 72 Water storage space 73 Weir member 81 Current plate L1 Connection height L2 Connection height

Claims (10)

Installed on the main body of the rainwater collecting tank where the collected rainwater is sent to the sewer pipe and the facility outflow pipe is sent to the rainwater infiltration / storage facility at different connection heights. Possible,
A drainage drainage auxiliary member for rainwater drainage, comprising an intake position changing pipe capable of changing a rainwater drainage level of at least one of the sewage outflow pipe and the facility outflow pipe. A drainage auxiliary member for rainwater tanks according to claim 1,
The drainage auxiliary member for rainwater tanks, wherein the intake position changing pipe has an expansion / contraction part or a bending / extension part capable of adjusting a rainwater drainage level. A drainage auxiliary member for rainwater tanks according to claim 1 or claim 2,
The drainage auxiliary member for rainwater drainage, wherein the intake position changing pipe has a detachable portion that can be sealed with respect to the sewage outflow pipe or the facility outflow pipe. A drainage auxiliary member for rainwater tanks according to any one of claims 1 to 3,
The drainage auxiliary member for rainwater tanks, wherein the intake position changing pipe has a horizontally adjustable portion that makes the direction of the rainwater intake port horizontal. A drainage drainage auxiliary member for a rainwater tank according to any one of claims 1 to 4,
A drainage auxiliary member for rainwater tanks, comprising a position holder capable of holding the position of the intake position changing pipe. Installed on the main body of the rainwater collecting tank where the collected rainwater is sent to the sewer pipe and the facility outflow pipe is sent to the rainwater infiltration / storage facility at different connection heights. Possible,
Partitioning the inside of the main body of the water into a water storage space on the sewage outflow pipe side and a water storage space on the facility outflow pipe side;
A drainage auxiliary member for rainwater drainage comprising a weir member capable of changing the outflow order of rainwater from the main body to the sewage outflow pipe and facility outflow pipe. A drainage auxiliary member for rainwater tanks according to claim 6,
A drainage auxiliary member for rainwater drainage, wherein the weir member is adjustable in height. A drainage auxiliary member for rainwater drainage according to claim 6 or 7,
The drainage auxiliary member for rainwater traps, wherein the weir member has a rectifying plate for adjusting the distribution of the rainwater flowing into the trap body with respect to the water storage spaces. A drainage auxiliary member for rainwater tanks according to any one of claims 6 to 8,
A drainage auxiliary member for rainwater drainage, wherein the dam member is configured to be self-supporting. For rainwater traps that connect the drainage pipe that collects rainwater to the sewer pipe and the facility drainage pipe that sends the collected rainwater to the rainwater infiltration and storage facility at different connection heights.
A rainwater tank comprising the rainwater drainage auxiliary member according to any one of claims 1 to 9.