JP7401382B2 - drainage piping system - Google Patents

Description

The present invention relates to a drainage piping system.

When a disaster such as an earthquake occurs, a large number of people may evacuate to and live in evacuation areas. Evacuees sometimes want to use the toilet at the evacuation site, but they are sometimes unable to use the toilets that have been set up in advance at the evacuation site.

Therefore, for example, Patent Document 1 proposes a piping system for a temporary toilet that allows the temporary toilet to be installed at an evacuation site. In this piping system for a temporary toilet, an outflow pipe is buried underground, with one end connected to a water source and the other end connected to a sewage main pipe. A standpipe is connected to the outflow pipe, and a temporary toilet can be attached to the standpipe. In this piping system for a temporary toilet, the temporary toilet is not attached to the standpipe during normal times, and the outflow pipe is not used. In the event of a disaster, a temporary toilet is attached to the standpipe, and the outflow pipe is used as a conduit for discharging wastewater discharged from the temporary toilet.

Patent No. 5643888

As mentioned above, the above-mentioned piping system for temporary toilets is a system that is not used in normal times, but only in times of disaster. Therefore, unless a disaster occurs, the equipment may remain unused for a long period of time. It is preferable that the period of non-use be short, and it is preferable that the temporary toilet piping system be used effectively even during normal times.

The present invention has been made in view of these points, and its purpose is to provide a drainage piping system that can effectively utilize the system for discharging wastewater from temporary toilets during disasters even during normal times. be.

A drainage piping system according to the present invention includes an inflow pipe connected to a drainage facility for discharging wastewater, a switching piping member connected to a downstream end of the inflow pipe, and a switching pipe member arranged downstream of the inflow pipe. a first outflow pipe whose upstream end is connected to the switching piping member; a water storage means in which water is stored; an upstream end connected to the water storage means and a downstream end connected to the switching piping member. It is equipped with a wash water outflow pipe. The switching piping member includes a first inlet connected to the downstream end of the inflow pipe, a second inlet connected to the downstream end of the wash water outflow pipe, and an upstream port of the first outflow pipe. The device includes a hollow body having an outlet connected to an end thereof, and a closing member disposed within the body and capable of selectively closing the first inlet and the second inlet. A temporary toilet can be attached to at least one of the switching piping member, the first outflow pipe, and the wash water outflow pipe.

According to the drainage piping system, in the event of a disaster, the first inlet of the switching piping member is closed by the closing member of the switching piping member, and the first inlet of the switching piping member, the first outflow pipe, and the wash water outflow pipe are closed. Attach a temporary toilet to at least one of the areas. Therefore, in the event of a disaster, the system allows the water stored in the water storage means to flow from the wash water outflow pipe to the first outflow pipe, thereby allowing the wastewater discharged from the temporary toilet to flow downstream of the first outflow pipe. It can be used as On the other hand, under normal conditions, the closing member of the switching piping member closes the second inlet of the switching piping member. Therefore, in normal times, it can be used as a system in which waste water discharged from the drainage equipment flows from the inflow pipe toward the first outflow pipe. Therefore, the drainage piping system that discharges sewage from temporary toilets during disasters can be effectively utilized even during normal times.

According to a preferred aspect of the present invention, the switching piping member has an attachment opening that opens upward and allows selective attachment of a lid and a temporary toilet.

According to the above aspect, by attaching the temporary toilet to the attachment port of the switching piping member, the wastewater discharged from the temporary toilet can be discharged to the first outflow pipe through the switching piping member. A switching piping member that switches the drainage flow path can be used as a member for attaching a temporary toilet.

According to another preferred aspect of the present invention, the drainage piping system includes a downstream piping member provided in an intermediate portion of the first outflow pipe. The downstream piping member opens upward and has a downstream attachment port to which a lid and a temporary toilet can be selectively attached.

According to the above aspect, the temporary toilet can be easily attached to the first outflow pipe via the downstream piping member. By attaching the temporary toilet to the downstream attachment port of the downstream piping member, sewage discharged from the temporary toilet can be discharged to the first outflow pipe through the downstream piping member.

According to another preferred aspect of the present invention, the drainage piping system includes an upstream piping member provided in an intermediate portion of the wash water outflow pipe. The upstream piping member opens upward and has an upstream attachment port to which a lid and a temporary toilet can be selectively attached.

According to the above aspect, the temporary toilet can be easily attached to the wash water outflow pipe via the upstream piping member. By attaching the temporary toilet to the upstream attachment port of the upstream piping member, wastewater discharged from the temporary toilet can be discharged to the wash water outflow pipe through the upstream piping member.

According to another preferred aspect of the present invention, the drainage piping system includes a downstream switching piping member connected to the downstream end of the first outflow pipe, and a downstream switching piping member having an upstream end connected to the downstream switching piping member. 2 outflow pipes, and a storage tank connected to the downstream switching piping member and storing wastewater. The downstream switching piping member has a first state in which wastewater flows from the first outflow pipe to the second outflow pipe, and a second state in which wastewater flows from the first outflow pipe into the storage tank. It is configured to be switchable.

According to the above aspect, by setting the state of the downstream switching piping member to the first state, the waste water discharged from the drainage equipment and the sewage discharged from the temporary toilet can be discharged to the second outflow pipe. I can do it. For example, even if the second outflow pipe is damaged, by setting the state of the downstream switching pipe member to the second state, the wastewater discharged from the drainage equipment and the sewage discharged from the temporary toilet can be removed. Can be discharged into a storage tank. Therefore, by changing the state of the downstream switching piping member, the discharge destination of the waste water can be changed to either the second outflow pipe or the storage tank.

According to another preferred aspect of the present invention, the drainage piping system includes a third outflow pipe arranged downstream of the second outflow pipe, a downstream end of the second outflow pipe, and , a backflow prevention piping member that is connected to the upstream end of the third outflow pipe and prevents wastewater from flowing back from the third outflow pipe to the second outflow pipe.

According to the above aspect, the backflow prevention piping member can prevent wastewater from flowing back from the third outflow pipe to the second outflow pipe.

According to the present invention, it is possible to provide a drainage piping system that allows effective use of a system for discharging sewage from temporary toilets during disasters even during normal times.

FIG. 1 is a plan view schematically showing a drainage piping system according to an embodiment. FIG. 1 is a front view schematically showing a drainage piping system according to an embodiment. FIG. 1 is a front view schematically showing a drainage piping system according to an embodiment. It is a front sectional view showing a piping member. It is a front sectional view showing a water supply opening-and-closing gate. It is a front sectional view showing a water supply opening-and-closing gate. It is a top view which shows the switching cell of a switching piping member. It is a top view which shows the switching cell of a switching piping member. 8 is a sectional view of the switching piping member taken along the line IX-IX in FIG. 7. FIG. 9 is a sectional view of the switching piping member taken along the line XX in FIG. 8. FIG. It is a front sectional view showing a downstream piping member. FIG. 3 is a plan view showing a downstream switching section of the downstream switching piping member. 13 is a cross-sectional view of the downstream switching piping member taken along the line XIII-XIII in FIG. 12. FIG. It is a front sectional view showing a backflow prevention piping member. FIG. 7 is a front view schematically showing a drainage piping system according to another embodiment. It is a front sectional view showing an upstream piping member.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a drainage piping system according to the present invention will be described with reference to the drawings. However, the embodiment described below is only one embodiment of the present invention, and is not intended to limit the present invention. In addition, the same reference numerals are given to members and parts that have the same function, and redundant explanations are omitted or simplified as appropriate.

FIG. 1 is a plan view schematically showing a drainage piping system 1 according to the present embodiment. 2 and 3 are front views schematically showing the drainage piping system 1. FIG. In FIGS. 2 and 3, illustration of a portion of the wash water outflow pipe 10 and the inflow pipe 11 is omitted. Further, FIG. 3 shows a state in which a temporary toilet 4 is installed in the drainage piping system 1.

As shown in FIG. 1, the drainage piping system 1 according to the present embodiment normally discharges wastewater from the drainage equipment 6 in the building 5 toward the sewage main pipe 8. In the event of a disaster such as an earthquake, the drainage piping system 1 is used as a system in which a temporary toilet 4 is installed, as shown in FIG. 3, and the wastewater discharged from the temporary toilet 4 is discharged to a sewer main pipe 8 or the like.

Here, wastewater includes sewage discharged in daily life, such as from toilets, kitchen sinks, and baths, as well as rainwater. The drainage equipment 6 described above is equipment for discharging wastewater, and is, for example, a toilet, a bath, a kitchen sink, or the like. In this embodiment, as shown in FIG. 1, the drainage equipment 6 is arranged inside the building 5, but even if it is not arranged in the building 5 and is arranged outdoors (for example, in a park), good.

The drainage piping system 1 includes a wash water outflow pipe 10, an inflow pipe 11, an outflow pipe 12, a branch pipe 20, a piping member 30, a water supply tank 40, a water supply opening/closing gate 50, and a switching pipe. It includes a member 70, a downstream piping member 110, a downstream switching piping member 120, a storage tank 150, and a backflow prevention piping member 160.

In the following description, water and wastewater flow from upstream to downstream. The upstream side refers to the drainage equipment 6 side or the water supply tank 40 side. The downstream side refers to the sewage main 8 side.

The wash water outflow pipe 10, the inflow pipe 11, and the outflow pipe 12 are buried underground. The wash water outflow pipe 10 is a pipe that allows water in the water supply tank 40 to flow to the outflow pipe 12 . The water in the water supply tank 40 is water for washing the inside of the outflow pipe 12, and the wash water outflow pipe 10 is a pipe through which water flows for washing the outflow pipe 12. The upstream end of the wash water outflow pipe 10 is connected to a water supply tank 40 . Here, the upstream end of the wash water outflow pipe 10 is connected to a water supply opening/closing gate 50, and is connected to the water supply tank 40 via the water supply opening/closing gate 50. A downstream end of the wash water outflow pipe 10 is connected to a switching piping member 70 .

The inflow pipe 11 is a pipe that allows wastewater discharged from the drainage equipment 6 to flow into the outflow pipe 12. A plurality of drainage facilities 6 are connected to an intermediate portion of the inflow pipe 11. A downstream end of the inflow pipe line 11 is connected to a switching piping member 70.

The outflow pipe 12 is a pipe that allows water flowing from the wash water outflow pipe 10 and drainage water flowing from the inflow pipe 11 to flow into the main sewage pipe 8 . Here, the upstream end of the outflow pipe line 12 is connected to the switching piping member 70. The downstream end of the outflow pipe 12 is connected to the sewer main pipe 8 . In this embodiment, the outflow pipe 12 includes a first outflow pipe 12a to a fourth outflow pipe 12d. Here, the first outflow pipe 12a, the second outflow pipe 12b, the third outflow pipe 12c, and the fourth outflow pipe 12d are arranged in the order from the switching piping member 70 toward the sewage main pipe 8. There is.

The branch pipe line 20 connects the drainage equipment 6 and the inflow pipe line 11. Note that the number of branch pipes 20 is not particularly limited, and is determined depending on, for example, the number of drainage facilities 6 and the number of piping members 30. In this embodiment, the number of drainage facilities 6 and the number of piping members 30 are both five. Therefore, the number of branch pipes 20 is also five. The upstream end of the branch pipe line 20 is connected to a drainage facility 6. The downstream end of the branch pipe 20 is connected to the inflow pipe 11 . Specifically, the downstream end of the branch pipe line 20 is connected to a piping member 30 and indirectly connected to the inflow pipe line 11 via the piping member 30.

Note that in this embodiment, the "pipe line" may be composed of one pipe, or may be composed of a plurality of pipes and a joint that connects the pipes. Furthermore, the wash water outflow pipe 10, the inflow pipe 11, the outflow pipe 12, and the branch pipe 20 may be straight or partially curved.

The piping member 30 is provided in the middle of the inflow pipe 11. However, although not shown, the piping member 30 may be provided at the upstream end of the inflow pipe line 11. Here, a plurality of piping members 30 are provided in the inflow pipe line 11, but the intervals between them may be the same or different. FIG. 4 is a front sectional view of the piping member 30. As shown in FIG. 4, the piping member 30 includes a drainage basin 31 and a standpipe 38.

The drainage basin 31 has a bottom and is formed of a hollow member. The drainage basin 31 has an inspection port 32, a first inlet 33, a second inlet 34, and an outlet 35. The inspection port 32 is open upward. The first inlet 33, the second inlet 34, and the outlet 35 are each open laterally. The inflow pipe line 11 is connected to the first inflow port 33 and the outflow port 35 . Although detailed illustration is omitted, the downstream end of the branch pipe 20 is connected to the second inlet 34. As described above, although not shown in the drawings, the piping member 30 is connected to the upstream end of the inflow pipe 11. The first inlet 33 is not formed in the drainage basin 31.

The standpipe 38 extends vertically and is connected to the inspection port 32 of the drainage basin 31. The standpipe 38 extends upward from the inspection port 32. The standpipe 38 is formed with a mounting port 39 that opens upward. A lid 3 is attached to the attachment port 39. In this embodiment, the temporary toilet 4 is not attached to the attachment port 39 in the event of a disaster, but the temporary toilet 4 may be attached to the attachment port 39. That is, the temporary toilet 4 may be attached to the inflow pipe 11.

As shown in FIG. 1, the water supply tank 40 is a tank in which water to be flowed into the wash water outflow pipe 10 and the outflow pipe 12 is stored. The water supply tank 40 is connected to the upstream end of the wash water outflow pipe 10 and supplies water from the upstream end of the wash water outflow pipe 10 into the wash water outflow pipe 10 . The water tank 40 is an example of water storage means. For example, rainwater is stored in the water tank 40. However, the water supply tank 40 only needs to store water; for example, it may be relatively clean water that is not mixed with foreign matter. The water supply tank 40 is different from the drainage equipment 6 and does not store dirty water. The water supply tank 40 is formed with a water supply port 41 through which the water inside is discharged. The water tank 40 may be buried underground or may be placed above ground.

The water supply opening/closing gate 50 is capable of opening and closing the upstream end of the wash water outflow pipe 10. By closing the upstream end of the wash water outflow pipe 10 by the water supply opening/closing gate 50, water in the water supply tank 40 is blocked from flowing into the wash water outflow pipe 10. On the other hand, by opening the upstream end of the wash water outflow pipe 10 by the water supply opening/closing gate 50, water in the water supply tank 40 can flow into the wash water outflow pipe 10.

5 and 6 are front sectional views of the water supply opening/closing gate 50. As shown in FIG. 5, the water supply opening/closing gate 50 includes a storage container 51 and an opening/closing mechanism 60 disposed inside the storage container 51. The storage container 51 is a container in which water from the water supply tank 40 is temporarily stored. The storage container 51 is formed with an inspection port 52 that opens upward. A vertically extending standpipe 59 is connected to the inspection port 52.

A gate water supply port 53 that opens laterally is formed in the storage container 51 . The gate water supply port 53 is connected to the upstream end of the wash water outflow pipe 10 . Water stored in the storage container 51 from the water supply tank 40 flows into the wash water outflow pipe 10 from the gate water supply port 53. Here, a cylindrical projecting portion 55 projecting toward the inside of the storage container 51 is fitted into the gate water supply port 53 .

The opening/closing mechanism 60 opens and closes the gate water supply port 53 of the storage container 51. Here, the opening/closing mechanism 60 can open and close the gate water supply port 53 by moving up and down within the storage container 51. Note that the configuration of the opening/closing mechanism 60 is not particularly limited.

In this embodiment, the opening/closing mechanism 60 has a vertical cylinder part 62 and a horizontal cylinder part 61. The vertical tube portion 62 is disposed within the storage container 51 and has a cylindrical shape that extends vertically. The vertical tube portion 62 has an upper opening 65 that opens upward and a lower opening 66 that opens downward. The water supply port 41 (see FIG. 1) of the water supply tank 40 is connected to the upper opening 65 via a supply means 45 that supplies water in the water supply tank 40 to the storage container 51 of the water supply opening gate 50. The supply means 45 is, for example, a pipe, but is not limited to a pipe as long as it can supply water to the storage container 51.

As shown in FIG. 5, the lower opening 66 opens into the storage container 51, and the water in the water supply tank 40 is once discharged into the storage container 51 through the vertical cylinder portion 62.

In this embodiment, the horizontal cylinder part 61 is provided on the side of the vertical cylinder part 62. The horizontal tube portion 61 extends from the side of the vertical tube portion 62 toward the gate water supply port 53 side. The horizontal cylindrical portion 61 is vertically movable together with the vertical cylindrical portion 62. Here, the horizontal tube portion 61 is provided with a handle 64 for operation by an operator.

Furthermore, a protrusion 63 that protrudes toward the gate water supply port 53 is formed at the upper portion of the end of the horizontal cylinder portion 61 on the gate water supply port 53 side (the right end in FIG. 5). This protrusion 63 can come into contact with the protruding cylindrical portion 55 fitted into the gate water supply port 53. Here, the downward movement of the opening/closing mechanism 60 is restricted by the protrusion 63 coming into contact with the protruding cylindrical portion 55 .

In this embodiment, the opening/closing mechanism 60 is movable between an open position P1 (see FIG. 6) and a closed position P2 (see FIG. 5). The open position P1 is a position of the opening/closing mechanism 60 in which the horizontal cylinder portion 61 is located above the gate water supply port 53, as shown in FIG. At the open position P1, the gate water supply port 53 is in an open state. At the open position P1, water in the water supply tank 40 is once discharged into the storage container 51 through the lower opening 66 of the vertical cylinder part 62. Then, when the water level in the storage container 51 reaches the height of the gate water supply port 53, water flows from the gate water supply port 53 toward the wash water outflow pipe 10.

The closed position P2 is the position of the opening/closing mechanism 60 when the protrusion 63 of the horizontal cylinder part 61 and the protruding cylinder part 55 fitted into the gate water supply port 53 come into contact, as shown in FIG. At the closed position P2, the gate water supply port 53 is closed by the opening/closing mechanism 60. Therefore, the water in the water supply tank 40 cannot flow into the wash water outflow pipe 10. At the closed position P2, water from the water tank 40 is temporarily stored in the storage container 51.

The switching piping member 70 shown in FIG. 1 is a member that switches the flow path of water or drainage. In this embodiment, the switching piping member 70 switches the flow path of waste water discharged from the drainage equipment 6 and the flow path of water from the water supply tank 40. 7 and 8 are plan views of the switching box 71 of the switching piping member 70. 7 shows a state in which the second inlet 93 is closed, and FIG. 8 shows a state in which the first inlet 92 is closed. FIG. 9 is a sectional view of the switching piping member 70 taken along the line IX-IX in FIG. FIG. 10 is a sectional view of the switching piping member 70 taken along the line XX in FIG. As shown in FIG. 9, the switching piping member 70 includes a switching box 71 and a standpipe 72.

As shown in FIG. 7, the switching cell 71 includes a cell main body 81 and a closing member 101. The main body 81 is a hollow member and has a cylindrical shape with a bottom. As shown in FIG. 9, an inspection opening 91 that opens upward is formed in the upper part of the square main body 81.

In this embodiment, a standpipe 72 is connected to the inspection port 91 . The standpipe 72 extends upward from the inspection port 91. The standpipe 72 is formed with an attachment port 75 that opens upward. The lid 3a and the toilet bowl 4a of the temporary toilet 4 (see FIG. 3) can be selectively attached to the attachment opening 75. The lid 3a is attached to the attachment port 75 during normal times other than in times of disaster. In the event of a disaster, the lid 3a is removed from the attachment opening 75, and the toilet bowl 4a of the temporary toilet 4 is attached to the attachment opening 75.

As shown in FIG. 7, the main body 81 includes a first inflow cylindrical part 82, a second inflow cylindrical part 83, an outflow cylindrical part 84, a first invert 85, and a second invert 86. It is provided. The first inflow cylindrical portion 82 , the second inflow cylindrical portion 83 , and the outflow cylindrical portion 84 are each cylindrical in shape and extend laterally from the side of the main body 81 . A first inflow port 92 that opens laterally is formed in the first inflow cylindrical portion 82 . A downstream end of the inflow pipe 11 is connected to the first inflow port 92 . In the present embodiment, the first inflow cylindrical portion 82 is constructed by fitting two members together, but it may be constructed from one member.

The second inflow cylindrical portion 83 is orthogonal to the first inflow cylindrical portion 82 in plan view. A second inflow port 93 that opens laterally is formed in the second inflow cylindrical portion 83 . A downstream end of the wash water outflow pipe 10 is connected to the second inlet 93 .

The outflow cylindrical portion 84 faces the first inflow cylindrical portion 82 and is orthogonal to the second inflow cylindrical portion 83 in plan view. The outflow cylindrical portion 84 is formed with an outflow port 94 that opens laterally. The outflow port 94 is connected to the upstream end of the outflow pipe 12 (specifically, the first outflow pipe 12a).

As shown in FIG. 7, the first invert 85 connects the first inlet 92 of the first inflow cylindrical part 82 and the outlet 94 of the outflow cylindrical part 84, and is connected to the bottom surface of the main body 81. It is formed. In this embodiment, the first invert 85 has a half-tube shape and extends in a straight line. As shown in FIG. 8, the second invert 86 connects the second inlet 93 of the second inflow cylindrical portion 83 and the first invert 85, and is formed on the bottom surface of the main body 81. The second invert 86 is connected to the central portion of the first invert 85. The second invert 86 has a half-tube shape and extends in a straight line.

As shown in FIGS. 7 and 8, the closing member 101 is disposed within the main body 81 and is capable of selectively closing the first inlet 92 and the second inlet 93. In this embodiment, the closing member 101 is selectively fitted into the first inflow cylindrical part 82 in which the first inflow port 92 is formed and the second inflow cylindrical part 83 in which the second inflow port 93 is formed. will be combined. As shown in FIG. 9, the closure member 101 includes an insertion section 102, a closure plate section 103, an abutment section 104, and an operation section 105.

As shown in FIGS. 9 and 10, the insertion portion 102 is a cylindrical portion that is inserted into either the first inflow cylindrical portion 82 or the second inflow cylindrical portion 83. As shown in FIGS. A rubber seal member 106 is provided on the outer peripheral surface of the insertion portion 102. The sealing member 106 is arranged between the insertion portion 102 and either the first inflow cylindrical portion 82 or the second inflow cylindrical portion 83. The sealing member 106 can increase the adhesion between the insertion portion 102 and the first inflow cylindrical portion 82 and the adhesion between the insertion portion 102 and the second inflow cylindrical portion 83 .

The closing plate portion 103 closes the insertion portion 102 and is provided at the end of the insertion portion 102 on the opposite side to the insertion side. A portion of the closing plate portion 103 above the center in the vertical direction is a flat surface in the vertical direction. A portion of the closing plate portion 103 below the center in the vertical direction is curved so as to move away from the insertion portion 102 and to be concave downward as it goes downward. In this embodiment, as shown in FIG. 8, when the insertion part 102 is inserted into the first inflow cylindrical part 82, the closing plate part 103 functions as an invert through which wastewater flows together with the second invert 86. Further, as shown in FIG. 7, when the insertion portion 102 is inserted into the second inflow cylindrical portion 83, the closing plate portion 103 functions as an invert through which drainage water flows together with the first invert 85.

As shown in FIGS. 9 and 10, the contact portion 104 is inserted into the inside of the main body 81 when the insertion portion 102 is inserted into either the first inflow cylindrical portion 82 or the second inflow cylindrical portion 83. This is the part that comes into contact with the peripheral surface. The contact portion 104 extends above the insertion portion 102 along the insertion direction of the insertion portion 102. As shown in FIG. 7, one end of the contact portion 104 is curved along the inner peripheral surface of the square main body 81 in plan view.

As shown in FIG. 9, the operation section 105 is a part to which a rod-shaped operation member (not shown) that can be held by an operator is attached. The operating section 105 is provided above the insertion section 102 and above the abutment section 104. The operating section 105 has, for example, a cylindrical shape extending in the vertical direction, and the rod-shaped operating member is used while being inserted into the operating section 105.

For example, as shown in FIG. 7, when it is desired to communicate the first inlet 92 and the outlet 94, the operator inserts the insertion portion 102 of the closing member 101 into the second inflow cylindrical portion 83, as shown in FIG. and close the second inlet 93. As a result, the waste water that has flowed into the main body 81 from the first inlet 92 flows through the first invert 85 and flows out from the outlet 94. At this time, since the second inlet 93 is closed by the closing member 101, the waste water in the first invert 85 does not flow into the second inlet 93.

On the other hand, as shown in FIG. 8, when the operator wants to make the second inflow port 93 and the outflow port 94 communicate with each other, for example, as shown in FIG. 82 and close the first inlet 92. As a result, water that has flowed into the main body 81 from the second inlet 93 flows through the second invert 86 and the first invert 85 and flows out from the outlet 94. At this time, since the first inlet 92 is closed by the closing member 101, the water in the second invert 86 does not flow into the first inlet 92.

The switching piping member 70 has been described above. Next, the downstream piping member 110 shown in FIG. 1 will be explained. As shown in FIG. 3, the downstream piping member 110 is for attaching the temporary toilet 4 to the first outflow pipe 12a. The downstream piping member 110 is provided in the middle of the first outflow pipe line 12a on the downstream side of the switching piping member 70. In this embodiment, three downstream piping members 110 are provided in the middle of the first outflow pipe 12a, but the number of downstream piping members 110 is not particularly limited. The number of downstream piping members 110 is determined according to the number of temporary toilets 4 that are desired to be attached to the first outflow pipe 12a. Although the plurality of downstream piping members 110 are arranged at equal intervals here, they may be arranged at different intervals. The three downstream piping members 110 have the same configuration.

FIG. 11 is a front sectional view showing the downstream piping member 110. As shown in FIG. 11, the downstream piping member 110 includes a drainage basin 111 and a standpipe 112. The drainage basin 111 is a bottomed member that opens upward. The drainage basin 111 has a downstream inspection port 115, a downstream inlet 116, and a downstream outlet 117. The downstream inspection port 115 opens upward. The downstream inlet 116 and the downstream outlet 117 are each open laterally. A first outflow pipe 12a is connected to the downstream inlet 116 and the downstream outlet 117. In this embodiment, the downstream inlet 116 and the downstream outlet 117 are at the same position in the vertical direction. However, the downstream inlet 116 may be located above the downstream outlet 117.

The standpipe 112 extends vertically and is connected to a downstream inspection port 115 of the drainage basin 111. The standpipe 112 is formed with a downstream attachment port 119 that opens upward. The lid 3b and the toilet bowl 4a of the temporary toilet 4 (see FIG. 3) can be selectively attached to the downstream attachment port 119.

The downstream switching piping member 120 shown in FIG. 1 is a member that can switch the drainage flow path on the downstream side of the switching piping member 70. The downstream switching piping member 120 is provided in a portion of the outflow pipe 12 on the downstream side of the downstream piping member 110, and switches the drainage flow path of the outflow pipe 12. The downstream switching piping member 120 is arranged between the first outflow pipe 12a and the second outflow pipe 12b, and is connected to the first outflow pipe 12a, the second outflow pipe 12b, and the storage tank 150.

FIG. 12 is a plan view of the downstream switching block 121 of the downstream switching piping member 120. FIG. 13 is a sectional view of the downstream switching piping member 120 taken along the line XIII-XIII in FIG. As shown in FIG. 13, the downstream switching piping member 120 includes a downstream switching block 121 and an inspection pipe 122. The downstream switch 121 switches between a first state in which wastewater flows from the first outflow pipe 12a to the second outflow pipe 12b and a second state in which wastewater flows from the first outflow pipe 12a into the storage tank 150. It is possible.

The downstream switching cell 121 includes a cell main body 131 and a closing body 132. The main body 131 has a space inside. The main body 131 is formed with an inspection port 141 that opens upward, an inlet 142 that opens laterally, a first outlet 143 that opens laterally, and a second outlet 144 that opens downward. ing.

An inspection pipe 122 is connected to the inspection port 141 . Inspection tube 122 extends upward from inspection port 141 . A lid 3c is attached to the inspection tube 122.

The downstream end of the first outflow pipe 12a is connected to the inflow port 142. The first outflow port 143 is connected to the upstream end of the second outflow pipe 12b. A storage tank 150 (see FIG. 2) is connected to the second outlet 144. Here, the second outlet 144 is connected to an upstream end of a connecting pipe 149, and is indirectly connected to a storage tank 150 via the connecting pipe 149.

The closing body 132 is capable of closing the second outlet 144. The closing body 132 has an invert 145 through which drainage flows, and a fitting part 146 that can fit into the second outlet 144. In this embodiment, the state in which the fitting portion 146 of the closure body 132 is fitted into the second outlet 144 is the first state. In the first state, the waste water from the first outflow pipe 12a flows into the main body 131 through the inlet 142. Then, the waste water that has flowed into the main body 131 passes through the invert 145 and flows out from the first outlet 143 to the second outlet pipe 12b.

In this embodiment, the state in which the closure body 132 is removed is the second state. In the second state, the waste water that has flowed into the main body 131 is discharged into the storage tank 150 through the second outlet 144 before reaching the first outlet 143 .

The storage tank 150 shown in FIG. 3 is a tank that stores wastewater such as sewage discharged from the temporary toilet 4, for example. As mentioned above, the reservoir 150 is connected to the second outlet 144 (see FIG. 13) of the downstream switch 121 via the connecting line 149. The storage tank 150 has a sealed space inside. Since the storage tank 150 is of a sealed type, it is possible to prevent bad odor generated from waste water such as sewage in the storage tank 150 from leaking to the outside. In this embodiment, the storage tank 150 is buried underground.

The backflow prevention piping member 160 shown in FIG. 1 is for preventing drainage from flowing backward. The backflow prevention piping member 160 is provided downstream of the downstream switching piping member 120. The backflow prevention piping member 160 is arranged between the second outflow pipe 12b and the third outflow pipe 12c. Therefore, the backflow prevention piping member 160 prevents the waste water in the third outflow pipe 12c from flowing into the second outflow pipe 12b.

FIG. 14 is a front sectional view of the backflow prevention piping member 160. As shown in FIG. 14, the backflow prevention piping member 160 includes a backflow prevention box 161 and a standpipe 162. The backflow prevention box 161 is a cylindrical member with a bottom, and an inspection port 171 that opens upward is formed in the upper part. A standpipe 162 is connected to the inspection port 171 . The standpipe 162 extends upward from the inspection port 171.

The backflow prevention box 161 has an inlet 172 and an outlet 173. The inlet 172 and the outlet 173 open laterally. The inlet 172 and the outlet 173 face each other. The outflow pipe 12 is connected to the inflow port 172 and the outflow port 173. Specifically, the inlet 172 is connected to the downstream end of the second outflow pipe 12b. The upstream end of the third outflow pipe 12c is connected to the outflow port 173.

In this embodiment, the inlet 172 is located at a higher position than the outlet 173. In other words, the lower end 172a of the inlet 172 is located above the lower end 173a of the outlet 173. Therefore, even if the wastewater in the third outflow pipe 12c flows backward into the backflow preventer 161, the wastewater will accumulate in the backflow preventer 161 and flow from the inlet 172 to the second outflow pipe 12b. This makes it difficult for wastewater to flow back into the drain.

In this embodiment, as shown in FIG. 1, a public chamber 180 is provided in the middle of the outflow pipe 12. Specifically, the public chamber 180 is connected to the downstream end of the third outflow pipe 12c and the upstream end of the fourth outflow pipe 12d. The downstream end of the fourth outflow pipe 12d is connected to the sewer main pipe 8. Note that the public square 180 can be a conventionally known one, so the explanation here will be omitted.

The configuration of the drainage piping system 1 according to the present embodiment has been described above. Next, how to use the drainage piping system 1 will be explained. The drainage piping system 1 is used differently in normal times and in times of disaster. In normal times, the drainage piping system 1 is configured to allow wastewater discharged from the drainage equipment 6 to flow into the main sewage pipe 8, as shown in FIG. As shown in FIG. 3, the drainage piping system 1 is configured to selectively drain wastewater discharged from the temporary toilet 4 into the sewage main pipe 8 or the storage tank 150 in the event of a disaster.

First, how to use the drainage piping system 1 in normal times will be explained. Normally, the drainage equipment 6 is used and the water tank 40 is not used. Therefore, in the switching box 71 of the switching piping member 70, as shown in FIG. 7, the closing member 101 is inserted into the second inflow cylindrical portion 83 to close the second inflow port 93. At this time, the first inlet 92 is in an open state. Further, under normal conditions, the opening/closing mechanism 60 of the water supply opening/closing gate 50 is placed at the closed position P2 (see FIG. 5), and the cleaning water outflow pipe 10 is in a state of being closed by the water supply opening/closing gate 50.

Normally, the downstream switching pipe 121 of the downstream switching piping member 120 is in the first state, and the fitting part 146 of the closure body 132 is fitted into the second outlet 144, as shown in FIG. In normal times, as shown in FIG. 2, the temporary toilet 4 is not attached to the attachment port 75 of the switching piping member 70 and the downstream attachment port 119 of the downstream piping member 110, and the lids 3a and 3b are closed, respectively. installed.

Normally, waste water discharged from the drainage equipment 6 is discharged to the inflow pipe 11 through the branch pipe 20. The waste water discharged into the inflow pipe line 11 flows into the switching pipe 71 from the first inflow port 92 of the switching piping member 70. In the switching piping member 70, the second inlet 93 is closed by the closing member 101, as shown in FIG. The waste water is then discharged into the downstream switching box 121 of the downstream switching piping member 120. In normal times, as shown in FIG. 13, since the closing body 132 of the downstream switch 121 is fitted into the second outlet 144, the waste water discharged into the main body 131 of the downstream switch 121 is It is discharged from the outlet 143 and discharged into the sewer main pipe 8 through the public basin 180.

Next, a method of using the drainage piping system 1 in the event of a disaster will be explained. In the event of a disaster, temporary toilets 4 (see Figure 3) are used. Therefore, the lids 3a and 3b are removed from the mounting port 75 of the switching piping member 70 and the downstream mounting port 119 of the downstream piping member 110, and the toilet bowl 4a of the temporary toilet 4 is inserted into the mounting port 75 and the downstream mounting port 119, respectively. It is attached. In the event of a disaster, the water in the water tank 40 is used as appropriate, and when the water in the water tank 40 is to flow into the wash water outflow pipe 10, the water supply opening/closing gate 50 opens the upstream end of the wash water outflow pipe 10. do.

In the event of a disaster, the inflow pipe 11 to which the drainage equipment 6 is connected is not used. Therefore, as shown in FIG. 8, in the switching box 71 of the switching piping member 70, the closing member 101 is inserted into the first inflow cylindrical part 82 to close the first inflow port 92. At this time, the second inlet 93 is in an open state.

In the event of a disaster, when the temporary toilet 4 is installed, the upstream end of the wash water outflow pipe 10 is closed by the water supply opening/closing gate 50. Therefore, the wastewater discharged from the temporary toilet 4 is discharged into the first outflow pipe 12a, and a part of the discharged wastewater, for example, filth such as feces contained in the wastewater, remains in the first outflow pipe 12a. The state will be as follows.

When discharging sewage filth and the like remaining in the first outflow pipe 12a to the downstream side of the outflow pipe 12, water is caused to flow from the wash water outflow pipe 10. In order to flow water from the wash water outflow pipe 10, the opening/closing mechanism 60 of the water supply opening/closing gate 50 is set to the open position P1 (see FIG. 6). As a result, the upstream end of the wash water outflow pipe 10 is opened by the water supply opening/closing gate 50.

At this time, the water stored in the storage container 51 of the water supply opening/closing gate 50 flows into the wash water outflow pipe 10 through the gate water supply port 53. As a result, the filth contained in the wastewater remaining in the first outflow pipe 12a is discharged toward the downstream side of the outflow pipe 12 by the flow of water from the storage container 51. After flushing the filth contained in the wastewater discharged from the temporary toilet 4 to the downstream side of the outflow pipe 12, the opening/closing mechanism 60 of the water supply opening/closing gate 50 is returned to the closed position P2 (see FIG. 5). The upstream end of the wash water outflow pipe 10 is closed. Note that when the water stored in the storage container 51 becomes low, it is preferable to supply the water in the water supply tank 40 to the storage container 51.

In addition, in the event of a disaster, the wastewater discharged from the temporary toilet 4 may be discharged into the sewage main pipe 8 or may be discharged into the storage tank 150. For example, if the main sewage pipe 8 is not damaged during a disaster, the wastewater discharged from the temporary toilet 4 is discharged into the main sewage pipe 8. At this time, in the downstream switching block 121 of the downstream switching piping member 120, the fitting part 146 of the closing body 132 is fitted into the second outlet 144, as shown in FIG. Therefore, the second outlet 144 is closed, and the wastewater discharged from the temporary toilet 4 is discharged into the sewer main pipe 8 through the first outlet 143 of the downstream switch 121.

On the other hand, if the main sewage pipe 8 is damaged during a disaster, the wastewater discharged from the temporary toilet 4 is discharged into the storage tank 150. At this time, the fitting portion 146 of the closure body 132 is removed from the second outlet 144 in the downstream switching block 121 of the downstream switching piping member 120. As a result, the second outlet 144 is opened, and the wastewater discharged from the temporary toilet 4 is discharged into the storage tank 150 through the second outlet 144 of the downstream switch 121.

As described above, in this embodiment, in the event of a disaster, the first inlet 92 of the switching piping member 70 is closed by the closing member 101 of the switching piping member 70, as shown in FIG. The temporary toilet 4 is attached to the member 70 and the first outflow pipe 12a. Therefore, in the event of a disaster, the drainage piping system 1 allows the wastewater discharged from the temporary toilet 4 to flow through the outflow pipe by flowing the water stored in the water supply tank 40 from the wash water outflow pipe 10 to the first outflow pipe 12a. 12 can be used as a downstream flow system. On the other hand, in normal times, the second inlet 93 of the switching piping member 70 is closed by the closing member 101 of the switching piping member 70, as shown in FIG. Therefore, in normal times, the drainage piping system 1 can be used as a system for flowing wastewater discharged from the drainage equipment 6 from the inflow pipe 11 toward the outflow pipe 12, as shown in FIG. Therefore, the drainage piping system 1 that uses the temporary toilet 4 during a disaster can be used as a system that uses the drainage equipment 6 during normal times, so it can be effectively utilized even during normal times.

Furthermore, in this embodiment, as shown in FIG. 7, in normal times, the second inlet 93 of the switching piping member 70 is closed, so that the waste water discharged from the drainage equipment 6 passes through the second inlet 93. It is possible to prevent the wash water from flowing back into the outflow pipe 10. Therefore, it is possible to prevent the inside of the wash water outflow pipe 10 from being contaminated by drainage water during normal times. In this embodiment, in the event of a disaster, the first inlet 92 of the switching piping member 70 is closed, as shown in FIG. Therefore, even if the wastewater discharged from the temporary toilet 4 flows backward into the switching piping member 70, it can be prevented from flowing into the inflow pipe line 11 through the first inflow port 92. Therefore, in the event of a disaster, the inside of the inflow pipe 11 can be prevented from becoming contaminated with sewage discharged from the temporary toilet 4. Furthermore, in the event of a disaster, since the first inlet 92 is closed, the water supplied from the water tank 40 to the wash water outflow pipe 10 does not flow into the first inlet 92 but instead flows into the outflow pipe 12. be swept away. Therefore, the water in the wash water outflow pipe 10 is not divided into the inflow pipe 11 and the outflow pipe 12, so that the flow rate is unlikely to decrease.

In this embodiment, as shown in FIG. 3, the switching piping member 70 opens upward and has an attachment port 75 to which the lid 3a (see FIG. 9) and the temporary toilet 4 can be selectively attached. By attaching the temporary toilet 4 to the attachment port 75 of the switching piping member 70 in this manner, the wastewater discharged from the temporary toilet 4 can be discharged through the switching piping member 70 to the first outflow pipe 12a. Therefore, the switching piping member 70 that switches the drainage flow path can be used as a member for attaching the temporary toilet 4.

In this embodiment, as shown in FIG. 3, a downstream piping member 110 is provided in the middle of the first outflow pipe 12a. The downstream piping member 110 opens upward and has a downstream attachment port 119 to which the lid 3b (see FIG. 11) and the temporary toilet 4 can be selectively attached. In this manner, by attaching the temporary toilet 4 to the downstream attachment port 119 of the downstream piping member 110, the wastewater discharged from the temporary toilet 4 can be discharged through the downstream piping member 110 to the first outflow pipe 12a. The temporary toilet 4 can be easily attached to the first outflow pipe 12a via the downstream piping member 110.

In this embodiment, as shown in FIG. 1, the downstream switching piping member 120 is connected to the downstream end of the first outflow pipe 12a, the upstream end of the second outflow pipe 12b, and the storage tank 150. The downstream switching piping member 120 has a first state in which wastewater flows from the first outflow pipe line 12a to the second outflow pipe line 12b, and a second state in which wastewater flows from the first outflow pipe line 12 into the storage tank 150. It is configured to be switchable. As a result, by setting the state of the downstream switching piping member 120 to the first state, the waste water discharged from the drainage equipment 6 and the sewage discharged from the temporary toilet 4 are transferred from the second outflow pipe line 12b to the sewer. It can be discharged into the main pipe 8. For example, even if the second outflow pipe 12b or the main sewage pipe 8 is damaged, by setting the state of the downstream switching piping member 120 to the second state, the wastewater discharged from the drainage equipment 6 and the temporary Sewage discharged from the toilet 4 can be discharged into the storage tank 150. Therefore, by changing the state of the downstream switching piping member 120, the discharge destination of the waste water can be changed to the sewage main pipe 8 or the storage tank 150.

In this embodiment, the backflow prevention piping member 160 is connected to the downstream end of the second outflow pipe 12b and the upstream end of the third outflow pipe 12c. This can prevent wastewater from flowing backward from the third outflow pipe 12c to the second outflow pipe 12b.

<Other embodiments>
In the above embodiment, the temporary toilet 4 is attached to the switching piping member 70 and the first outflow pipe 12a (specifically, the downstream piping member 110 provided in the middle of the first outflow pipe 12a). was possible. However, the temporary toilet 4 may be attachable to the flush water outflow pipe 10.

FIG. 15 is a front view schematically showing a drainage piping system 1A according to another embodiment. Although not shown in FIG. 15, the drainage piping system 1A includes an inflow pipe 11, an outflow pipe 12, a branch pipe 20, and a piping member 30, as in the above embodiment. A downstream piping member 110, a downstream switching piping member 120, a storage tank 150, and a backflow prevention piping member 160 are provided.

As shown in FIG. 15, in a drainage piping system 1A according to another embodiment, an upstream piping member 190 is provided in the middle of the wash water outflow pipe 10. The upstream piping member 190 is for installing the temporary toilet 4. The upstream piping member 190 is provided closer to the water supply tank 40 than the switching piping member 70 is. In this embodiment, three upstream piping members 190 are provided in the middle of the wash water outflow pipe 10, but the number of upstream piping members 190 is not particularly limited. The number of upstream piping members 190 is determined according to the number of temporary toilets 4 that are desired to be attached to the flush water outflow pipe 10. The intervals between the plurality of upstream piping members 190 may be equal or different.

FIG. 16 is a front sectional view showing the upstream piping member 190. As shown in FIG. 16, the upstream piping member 190 includes an upstream drainage basin 191 and a standpipe 192. The upstream drainage basin 191 has a cylindrical shape with a bottom. The upstream drainage basin 191 is formed with an upstream inspection port 195 that opens upward, an upstream inlet 196 that opens laterally, and an upstream outlet 197 that opens laterally. A wash water outflow pipe 10 is connected to the upstream inlet 196 and the upstream outlet 197. In this embodiment, the upstream inlet 196 and the upstream outlet 197 are at the same position in the vertical direction. However, the upstream inlet 196 may be located above the upstream outlet 197.

The standpipe 192 extends vertically and is connected to an upstream inspection port 195 of the upstream drainage basin 191. Standpipe 192 extends upward from upstream inspection port 195 . The standpipe 192 is formed with an upstream attachment port 199 that opens upward. The lid 3d and the toilet bowl 4a of the temporary toilet 4 (see FIG. 15) can be selectively attached to the upstream attachment port 199.

In this embodiment, the lid 3d is normally attached to the upstream attachment port 199 of the upstream piping member 190. In the event of a disaster, the toilet bowl 4a of the temporary toilet 4 is attached to the upstream attachment port 199 of the upstream piping member 190, as shown in FIG.

Similarly to the above embodiment, in the event of a disaster, the water in the water supply tank 40 is used as appropriate, and when the water in the water supply tank 40 is to flow into the wash water outflow pipe 10, the water supply opening/closing gate 50 is connected to the wash water outflow pipe. The upstream end of channel 10 is opened. In the switching box 71 of the switching piping member 70, as shown in FIG. 8, the closing member 101 is inserted into the first inflow cylindrical portion 82 to close the first inflow port 92. At this time, the second inlet 93 is in an open state.

In the event of a disaster, when the temporary toilet 4 is installed, the upstream end of the wash water outflow pipe 10 is closed by the water supply opening/closing gate 50. Therefore, a part of the sewage discharged from the temporary toilet 4, for example, filth contained in the sewage, remains in the wash water outflow pipe 10. When filth contained in the waste water remaining in the wash water outflow pipe 10 is to be flushed to the outflow pipe 12, the upstream end of the wash water outflow pipe 10 is opened by the water supply opening/closing gate 50, and the water supply opening/closing gate is opened. The water stored in the storage container 51 of 50 flows into the wash water outflow pipe 10 through the gate water supply port 53. As a result, dirt and the like remaining in the wash water outflow pipe 10 are discharged toward the outflow pipe 12 by the flow of water from the storage container 51. Even in this embodiment, by switching the drainage flow path by the downstream switching 121 of the downstream switching piping member 120, the destination of wastewater discharged from the temporary toilet 4 is changed from the main sewage pipe 8 to the storage tank 150, Alternatively, it is possible to switch from the storage tank 150 to the sewer main pipe 8.

Even in this embodiment, the drainage piping system 1A can be used as a system for flowing wastewater discharged from the drainage equipment 6 from the inflow pipe 11 toward the outflow pipe 12 during normal times. In the event of a disaster, the drainage piping system 1A drains the wastewater discharged from the temporary toilet 4 into the outflow pipe 12 by flowing the water stored in the water supply tank 40 from the wash water outflow pipe 10 to the first outflow pipe 12a. It can be used as a downstream flow system. Therefore, even in this embodiment, the drainage piping system 1A that discharges sewage from the temporary toilet 4 in the event of a disaster can be effectively utilized even in normal times.

In this embodiment, as shown in FIG. 15, an upstream piping member 190 is provided in the middle of the wash water outflow pipe 10. The upstream piping member 190 opens upward and has an upstream attachment port 199 to which the lid 3d (see FIG. 16) and the temporary toilet 4 can be selectively attached. By attaching the temporary toilet 4 to the upstream attachment port 199 of the upstream piping member 190 in this way, the wastewater discharged from the temporary toilet 4 can be discharged to the wash water outflow pipe 10 through the upstream piping member 190. The temporary toilet 4 can be easily attached to the wash water outflow pipe 10 via the upstream piping member 190.

Note that in this embodiment, the temporary toilet 4 can be attached to the flush water outflow pipe 10 in the event of a disaster, but similarly to the above embodiment, the temporary toilet 4 can be attached to the switching piping member 70 and the first outflow pipe 12a. It is possible to install However, in the event of a disaster, the temporary toilet 4 may not be attached to the switching piping member 70 or the first outflow pipe 12a. Here, in the event of a disaster, the temporary toilet 4 may be attached to at least one of the wash water outflow pipe 10, the switching piping member 70, and the first outflow pipe 12a.

In each embodiment, the water supply tank 40 was an example of water storage means. However, the water storage means is not limited to the water supply tank 40, and may be any device that can store water and supply water to the wash water outflow pipe 10. For example, the water storage means may be a groundwater facility located underground. In this case, water such as groundwater in an underground water facility may be supplied to the wash water outflow pipe 10 via, for example, a hose. Furthermore, the water supplied from the water storage means includes rainwater. Therefore, the water storage means may be a rainwater tank in which rainwater is stored. Further, the water storage means may be a river, the sea, a lake, a pond, etc. In this case, water from the river, sea, lake, pond, etc. is supplied to the wash water outflow pipe 10 via a hose or the like. good. Further, the water storage means is not limited to a fixed type, but may be a mobile type. The water storage means may be a water tanker in which water is stored.

1 Drainage piping system 4 Temporary toilet 6 Drainage equipment 10 Wash water outflow pipe 11 Inflow pipe 12a First outflow pipe 12b Second outflow pipe 12c Third outflow pipe 40 Water supply tank (water storage means)
70 Switching piping member 75 Mounting port 92 First inlet 93 Second inlet 94 Outlet 101 Closing member 110 Downstream piping member 119 Downstream attachment port 120 Downstream switching piping member 150 Storage tank 160 Backflow prevention piping member 190 Upstream piping member 199 Upstream Mounting port

Claims (6)

an inflow pipe connected to a drainage facility for discharging wastewater;
a switching piping member connected to the downstream end of the inflow pipe;
a first outflow pipe that is disposed downstream of the inflow pipe and whose upstream end is connected to the switching pipe member;
A water storage means in which water is stored;
a wash water outflow pipe whose upstream end is connected to the water storage means and whose downstream end is connected to the switching piping member;
Equipped with
The switching piping member is
A first inlet connected to the downstream end of the inflow pipe, a second inlet connected to the downstream end of the wash water outflow pipe, and a flow connected to the upstream end of the first outflow pipe. a hollow body having an outlet;
a closing member disposed within the main body and capable of selectively closing the first inlet and the second inlet;
has
A temporary toilet can be attached to at least one of the switching piping member, the first outflow pipe, and the wash water outflow pipe ,
A drainage piping system, wherein a pipe through which wastewater discharged from the first outflow pipe flows is not connected to the water storage means. an inflow pipe connected to a drainage facility for discharging wastewater;
a switching piping member connected to the downstream end of the inflow pipe;
a first outflow pipe that is disposed downstream of the inflow pipe and whose upstream end is connected to the switching pipe member;
A water storage means in which water is stored;
a wash water outflow pipe whose upstream end is connected to the water storage means and whose downstream end is connected to the switching piping member;
Equipped with
The switching piping member is
A first inlet connected to the downstream end of the inflow pipe, a second inlet connected to the downstream end of the wash water outflow pipe, and a flow connected to the upstream end of the first outflow pipe. a hollow body having an outlet;
a closing member disposed within the main body and capable of selectively closing the first inlet and the second inlet;
has
A temporary toilet can be attached to at least one of the switching piping member, the first outflow pipe, and the wash water outflow pipe,
The switching piping member is a drainage piping system in which the switching piping member opens upward and has an attachment port to which a lid and a temporary toilet can be selectively attached. an inflow pipe connected to a drainage facility for discharging wastewater;
a switching piping member connected to the downstream end of the inflow pipe;
a first outflow pipe that is disposed downstream of the inflow pipe and whose upstream end is connected to the switching pipe member;
A water storage means in which water is stored;
a wash water outflow pipe whose upstream end is connected to the water storage means and whose downstream end is connected to the switching piping member;
an upstream piping member provided in an intermediate portion of the wash water outflow pipe ;
Equipped with
The switching piping member is
A first inlet connected to the downstream end of the inflow pipe, a second inlet connected to the downstream end of the wash water outflow pipe, and a flow connected to the upstream end of the first outflow pipe. a hollow body having an outlet;
a closing member disposed within the main body and capable of selectively closing the first inlet and the second inlet;
has
A temporary toilet can be attached to at least one of the switching piping member, the first outflow pipe, and the wash water outflow pipe,
The upstream piping member is a drainage piping system in which the upstream piping member opens upward and has an upstream attachment port to which a lid and a temporary toilet can be selectively attached. comprising a downstream piping member provided in an intermediate portion of the first outflow pipe,
4. The drainage piping system according to claim 1, wherein the downstream piping member has a downstream attachment port that opens upward and allows a lid and a temporary toilet to be selectively attached. a downstream switching piping member connected to the downstream end of the first outflow pipe;
a second outflow pipe whose upstream end is connected to the downstream switching pipe member;
a storage tank connected to the downstream switching piping member and storing wastewater;
Equipped with
The downstream switching piping member has a first state in which wastewater flows from the first outflow pipe to the second outflow pipe, and a second state in which wastewater flows from the first outflow pipe into the storage tank. The drainage piping system according to any one of claims 1 to 4, configured to be switchable. a third outflow pipe located downstream of the second outflow pipe;
backflow prevention piping that is connected to the downstream end of the second outflow pipe and the upstream end of the third outflow pipe and prevents wastewater from flowing back from the third outflow pipe to the second outflow pipe; parts and
The drainage piping system according to claim 5 , comprising:

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