JP6085135B2 - Drainage system for buildings and drainage basin used therefor - Google Patents

Description

  The present invention relates to a building drainage system and a drainage basin used therein, and more particularly to a novel building drainage system including a drainage pipe for transporting wastewater generated in a building to a public sewer, and a drainage basin used therein.

  As shown in FIG. 13, conventionally, in a building 1 such as a condominium, drainage pipes 2 for flowing drainage discharged from drainage appliances such as toilets, kitchens, and baths of each household join in the site 3 through gathering etc. It becomes one drain pipe 2a and is connected to the public sewer 4 outside the site 3 through the ground.

  If the public sewer 4 is damaged and cannot be used in the event of an earthquake or other disaster, drainage equipment such as a toilet in the building 1 can be used even if the drainage system of the building 1 such as an apartment is safe. It becomes impossible to use, and it will interfere with life. Therefore, development of a building drainage system that can cope with such an emergency is desired, but has not been proposed yet.

  Therefore, a main object of the present invention is to provide a novel building drainage system and a drainage basin used therefor.

  Another object of the present invention is to provide a building drainage system and a drainage basin used therefor, which can make it possible to use a drainage device such as a toilet even when public sewerage becomes unavailable during a disaster such as an earthquake. It is.

  The present invention employs the following configuration in order to solve the above problems. Note that reference numerals in parentheses and supplementary explanations indicate correspondence with embodiments described later in order to help understanding of the present invention, and do not limit the present invention.

The first invention is a building drainage system comprising a drainage pipe for conveying the waste water produced in the building to the public sewer emergency drainage reservoir which is buried underground, and that provided in the drain pipe bifurcation A drainage basin, the drainage basin having an inflow port, a first outflow port connected to a public sewer, and a second bottom outflow port connected to an emergency drainage storage tank , and an inflow port comprising a flow path switching means selectively electrically Kutame against one of the the drainage flows first outlet port side and a second outlet port side from the flow path switching means, a first outlet and a second It is a building drainage system in which a sealing member that can be replaced with respect to the outlet is used .

In the first invention, the building drainage system (10) is applied to a building such as a condominium (100), and drainage pipes (12, 12) for transporting drainage discharged from drainage devices such as toilets to the public sewer (102). 12a), and an emergency drainage tank (14) buried underground. The drain pipe is provided with a drainage basin (20) as a branch part (16) having a first outlet (26) and a second outlet (30). The drainage basin includes a basin body (22) that is formed in a bottomed cylindrical shape, that is, has an upper opening. An inflow port (24), a first outflow port, and a second outflow port are formed in the side wall of the ridge body. The first outlet is connected to a public sewer through a drain pipe, and the second outlet is connected to an emergency drain storage tank through an emergency drain pipe (32), for example. Further, the catch basin, selectively direct the drainage against either the first outlet port side and a second outlet side, that the flow path switching hands stage for switching the flow direction of the waste water selectively is Provided. As the flow path switching means, sealing members (40, 60) that can be detachably attached to both the first outlet and the second outlet, that is, can be replaced are used. In an emergency when the public sewer cannot be used, the drain switching channel is switched to the second outlet by the channel switching means, and the drainage is discharged to the emergency drainage storage tank (14) instead of being discharged to the public sewer. And temporarily stored there.

According to the first invention, even when the public sewer cannot be used in the event of a disaster such as an earthquake, the capacity of the emergency drainage storage tank can be discharged from the building, and the use of drainage equipment such as a toilet can be used. Can be secured for a certain period. Moreover, since the drainage basin is provided at the branch portion and the sealing member that can be manufactured at low cost is used as the flow path switching means, the laying cost of the building drainage system can be reduced. Furthermore, since the sealing member that seals the first outlet and the sealing member that seals the second outlet can be used together, the member cost can be reduced.

The second invention is dependent on the first invention , and an invert connecting the inflow port and the first outflow port and a branch invert branching from the invert to the second outflow port are formed on the bottom surface of the rod main body. When the sealing member is attached to the second outlet, the sealing member seals the second outlet and closes the branch invert.

In the second invention, an invert (28) and a branch invert (34) are formed on the bottom surface of the bag main body (22). And when a sealing member (40) is attached to a 2nd outflow port (30), it has a shape which seals a 2nd outflow port and block | closes a branch invert. That is, when the drainage is guided to the first outlet (26) side, the sealing member closes the branch invert. According to the 2nd invention, the drainage pool in the main body of a gutter when guiding drainage to the 1st outflow side is prevented.

3rd invention depends on 1st or 2nd invention, and a 2nd outflow port is provided in a position higher than a 1st outflow port.

In 3rd invention, a 2nd outflow port (32) is provided in a position higher than a 1st outflow port (26), Preferably, the bottom face of a 2nd outflow port is comparable as the central axis of a 1st outflow port. It arrange | positions so that it may become. This can prevent the second outlet from obstructing the flow of drainage from the inlet (24) to the first outlet during normal times.

A fourth invention is a drainage basin used in a building drainage system according to any one of the first to third inventions, and has a bottomed cylindrical shape having an inlet, a first outlet, and a second outlet. It is a drainage basin provided with the flow-path switching means for selectively guide | inducing the wastewater which flowed in from the main body and the inflow port with respect to either one of the 1st outflow port side and the 2nd outflow port side.

In the fourth invention, the drainage basin (20) is connected to the drain pipes (12, 12a) for transporting the drainage generated in the building such as the apartment (100) to the public sewer (102), and the drainage channel A switchable branch (16) is formed. The drainage basin includes a basin body (22) that is formed in a bottomed cylindrical shape, that is, has an upper opening. An inflow port (24), a first outflow port (26), and a second outflow port (30) are formed on the side wall of the ridge body. Further, the drainage basin includes flow path switching means such as sealing members (40, 60) that are detachably attached to the first outlet and the second outlet, for example.

According to the fourth aspect of the present invention, a branch portion that can selectively switch the flow direction of drainage can be formed at low cost with respect to the drainage pipe simply by incorporating the drainage basin into the drainage pipe.

A fifth invention is dependent on the fourth invention, and the flow path switching means includes a sealing member that is replaceable with respect to the first outlet and the second outlet.

In the fifth invention, the flow path switching means includes the sealing member (40, 60). The sealing member can be detachably attached to both the first outlet (26) and the second outlet (30), that is, can be replaced.

According to the fifth aspect, since the sealing member that seals the first outlet and the sealing member that seals the second outlet can be used together, the member cost can be reduced.

  According to the present invention, even when public sewers cannot be used at the time of disasters such as earthquakes, the capacity of the emergency drainage storage tank can be discharged from the building, and the use of drainage devices such as toilets can be used for a certain period of time. It can be secured.

  The above object, other objects, features, and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

It is an illustration figure showing roughly one example of a building drainage system of this invention. It is a perspective view which shows the structure of the branch part in the normal time of the building drainage system of FIG. It is a top view which shows the structure of the branch part in the normal time of the building drainage system of FIG. It is sectional drawing which shows the cross section in the IV-IV line of FIG. It is sectional drawing which shows the cross section in the VV line | wire of FIG. It is a perspective view which shows the external appearance of the sealing member used with the building drainage system of FIG. It is a top view which shows the external appearance of the sealing member of FIG. It is a top view which shows the structure of the branch part in the emergency of the building drainage system of FIG. It is sectional drawing which shows the structure of the branch part of the other Example of the building drainage system of this invention. It is sectional drawing which shows the structure of the branch part of the further another Example of the drainage system for buildings of this invention. It is an illustration figure which shows further further another Example of the drainage system for buildings of this invention. It is an illustration figure which shows further further another Example of the drainage system for buildings of this invention. It is an illustration figure which shows an example of the conventional building drainage system roughly.

  Referring to FIG. 1, a building drainage system 10 (hereinafter simply referred to as “system 10”) according to an embodiment of the present invention is applied to an apartment house such as an apartment 100, and is used for a toilet of each household. It includes a drain pipe 12 that transports drainage discharged from a drainage device (not shown) to the public sewer 102. As will be described in detail later, the system 10 includes an emergency drainage storage tank 14 (hereinafter simply referred to as “drainage storage tank 14”), and in an emergency in which the public sewer 102 cannot be used, By storing drainage, drainage devices such as toilets can be used as usual even in the event of a disaster such as an earthquake.

  In this embodiment, the case where the system 10 is applied to an apartment house such as an apartment 100 will be described. However, the system 10 can be used for schools, government offices, hotels, detached houses, and the like that are equipped with drainage devices such as toilets. Applicable to all buildings.

  As shown in FIG. 1, the drain pipe 12 flows waste water (sewage and miscellaneous waste water) from drainage devices such as toilets, kitchens, baths, washing machines, and washstands, and leads it to the public sewer 102. It is formed by appropriately connecting pipes and joints made of vinyl chloride. Each of the drain pipes 12 extending from the drainage devices of each household is appropriately combined in the site 104 of the apartment 100 through gathering or the like to become one drain pipe (site drain pipe) 12a, which is piped at a predetermined downward slope, Connected to the public sewer 102 outside the site 104. The inner diameter of the combined drainage pipe 12a, that is, the site drainage pipe 12a, is appropriately set according to the scale of the apartment 100, and is, for example, 200 mm.

  The system 10 also includes a drainage storage tank 14 that is buried underground in the site 104 of the apartment 100. The drainage storage tank 14 is a container formed in a hollow rectangular parallelepiped shape or a cylindrical shape, and an inspection port (not shown) is provided on the top wall of the drainage storage tank 14. This inspection port is normally closed by a protective lid such as an iron lid. The drainage storage tank 14 is basically made of concrete, but the material thereof is not particularly limited, and can be formed of synthetic resin, metal, or the like. Moreover, the size (internal volume) of the drainage storage tank 14 is appropriately set according to the size of the apartment (the number of houses and the size of the site), for example, drainage for one to several days discharged from the apartment 100 in an emergency. It is set so that can be stored.

  In addition, the site drain pipe 12 a is provided with a branch portion 16 having a first outlet 26 connected to the public sewer 100 and a second outlet 30 connected to the drainage storage tank 14. In this embodiment, the branch portion 16 is provided with a drainage basin 20.

  Specifically, as shown in FIG. 2-5, the drainage basin 20 that functions as the branch portion 16 includes a casket body 22 that is formed in a bottomed cylindrical shape. The upper end of the bag main body 22 extends to the ground surface, and a protective cover (not shown) such as an iron cover is detachably provided at the upper opening. The bag main body 22 is basically made of concrete, but the material is not particularly limited, and can be formed of synthetic resin, metal, or the like. The inner diameter of the bag main body 22 is appropriately set according to the size of the apartment, and is, for example, 300-500 mm.

  An inflow port 24 is formed in the lower portion of the side wall of the ridge body 22. The end of the upstream site drain pipe 12 a is connected to the inflow port 24. A first outlet 26 is formed at a position opposite to the inlet 24. The end of the site drain pipe 12a on the downstream side is connected to the first outlet 26, and the first outlet 26 is connected to the public sewer 100 through the site drain pipe 12a.

  A linear invert 28 is formed on the bottom surface of the rod main body 22 so as to connect the inlet 24 and the first outlet 26. The invert 28 has a semi-cylindrical inner circumferential surface, and the inner circumferential surface has the same diameter as the inner diameter of the site drainage pipe 12a. Further, the inner peripheral surface (bottom surface) of the invert 28 and the tube bottom of the site drainage pipe 12a connected to the inflow port 24 and the first outflow port 26 are connected to be flush with each other.

  In addition, a second outlet 30 is formed in the lower portion of the side wall of the rod main body 22 in a direction perpendicular to the inlet 24 and the first outlet 26. An end of an emergency drain pipe 32 is connected to the second outlet 30, and the second outlet 30 is connected to the drainage storage tank 14 through the emergency drain pipe 32. The emergency drain pipe 32 is formed by appropriately connecting, for example, a hard vinyl chloride pipe or a joint. The inner diameter of the emergency drain pipe 32 is the same as the inner diameter of the site drain pipe 12a, and is, for example, 200 mm.

  Further, a branch invert 34 is formed on the bottom surface of the rod main body 22 so as to branch from the central portion of the invert 28 in the lateral direction and extend to the second outlet 30. The branch invert 34 has a semi-cylindrical inner peripheral surface, and the inner peripheral surface has the same diameter as the inner diameter of the emergency drain pipe 32. Further, the inner peripheral surface (bottom surface) of the branch invert 34 and the bottom surfaces of the emergency drain pipe 32 and the invert 28 connected to the second outlet 30 are connected to be flush with each other.

  Further, the branch portion 16 is selectively switched to one of the first outlet 26 side and the second outlet 30 side, that is, a flow path switching for selectively switching the flow direction of the drainage. Means are provided. In this embodiment, a sealing member 40 that can be detachably attached (that is, can be replaced) to both the first outlet 26 and the second outlet 30 is used as the flow path switching means. . That is, as will be described in detail later, the drainage is guided to the first outlet 26 side by attaching the sealing member 40 to the second outlet 30 in normal times, and the sealing member 40 is connected to the first outlet in an emergency. By replacing with 26, the waste water is guided to the second outlet 30 side.

  As shown in FIGS. 6 and 7, the sealing member 40 includes a sealing portion 42 formed in a substantially cylindrical shape using hard vinyl chloride, steel, hard rubber, or the like. The outer diameter and length of the sealing portion 42 are the same as or substantially the same as the diameter and length of the inner peripheral surface of the branch invert 34. That is, the sealing portion 42 has a size such that the lower half of the sealing portion 42 is just fitted into the branch invert 34, and when the sealing member 40 is attached to the second outlet 30, the second outlet 30 is In addition to sealing, the entire inside of the branch invert 34 is closed (see FIGS. 3 and 4). The sealing part 42 may be hollow for weight reduction. Further, the sealing portion 42 may be cut out with respect to a portion (upper half portion) protruding from the branch invert 34.

  A flange 44 is integrally formed at one end of the sealing portion 42. The pillow 44 is formed in the shape of a rectangular curved plate that protrudes laterally from one end of the sealing portion 42, and the outer surface thereof is along the inner peripheral surface of the bag main body 22 (see FIG. 3). In addition, a water stop material 46 formed of sponge rubber or the like is attached to the outer surface of the bridge 44, the lower surface of the sealing portion 42, and the like, thereby preventing drainage leakage from the second outlet 30 during normal operation. .

  Further, two leg support portions 48 are provided on the inner surface of the collar 44 at both lateral positions of the upper end portion of the sealing portion 42. The leg receiving portion 48 has a shape obtained by obliquely cutting a short tube, and its end surface opens upward. A support leg 50 made of hard vinyl chloride or the like is detachably provided on the leg receiving portion 48. The support legs 50 are formed in a tournament shape that protrudes in the horizontal direction from the two leg receiving portions 48 and then bends to become one. The support leg 50 is provided with a stretchable part 52 such as a turnbuckle, and the length of the support leg 50 can be adjusted by the stretchable part 52. A rubber cap 54 is attached to the tip of the support leg 50. However, the shape of the support leg 50 is not limited to this, and the support leg may be formed in an H shape or the like. Further, the support leg 50 is not provided so as to be detachable from the pillow 44, but may be provided so as to be rotatable in the vertical direction with the leg receiving portion 48 as a fulcrum, for example.

  When the sealing member 40 is attached to the second outlet 30, first, the sealing portion 42 and the portion 44 of the sealing member 40 are temporarily placed in the bag main body 22. At this time, the outer surface of the bridge 44 (water blocking material 46) is brought into contact with the inner peripheral surface of the main body 22, and the lower half of the sealing portion 42 is fitted into the branch invert 34. Next, the support leg 50 is connected horizontally to the pillow 44 so that the end of the support leg 50 is fitted from above the leg receiving part 48. Then, the sealing member 40 is fixed to the heel body 22 by adjusting the expansion / contraction portion 52 of the support leg 50 and pressing the skirt 44 against the inner peripheral surface of the heel body 22 with the support leg 50. In addition, when removing the sealing member 40 from the 2nd outflow port 30, it is good to perform an operation | work contrary to this, and when attaching the sealing member 40 to the 1st outflow port 26, the same operation | work as this is good. It is good to do. As described above, the sealing member 40 shown in FIG. 6 is easy to attach and detach, and can be manufactured at a lower cost than a metal gate valve or the like.

  In such a system 10, the sealing member 40 is attached to the second outlet 30 at normal times as shown in FIG. 3. That is, the normal mode in which the first outlet 26 is in an open state and the second outlet 30 is in a closed state is set. When a drainage device such as a toilet is used in this normal mode, the drainage passes through the first outlet 26 side, that is, passes through the drainage pipe 12 to the public sewer 102 as it is. At this time, since the sealing portion 42 of the sealing member 40 covers the entire inside of the branch invert 34, drainage accumulation in the drainage basin 20 is prevented, and drainage smoothly passes through the invert 28 in the drainage basin 20. Flowing into.

  On the other hand, in the event of an emergency in which the public sewer 102 cannot be used due to a disaster such as an earthquake, the sealing member 40 is replaced with the first outlet 26 as shown in FIG. Instead of being discharged to the public sewer 102, it is discharged into the drainage storage tank 14 through the second outlet 30 side and temporarily stored there.

  More specifically, in an emergency, a predetermined person in charge such as a manager of the condominium 100 inserts a hand from the end opening of the bag main body 22, and the sealing member 40 is moved to the second outlet 30. And is replaced with the first outlet 26. That is, it switches to the emergency mode in which the 1st outflow port 26 is a closed state and the 2nd outflow port 30 is an open state. In addition, after changing the sealing member 40, the protective cover of the edge part opening of the bag main body 22 is returned.

  When a drainage device such as a toilet is used with the sealing member 40 replaced with the first outlet 26 (emergency mode), the drainage passes through the drainage pipe 12 into the main body 22 from the inlet 24. Inflow. The wastewater that has flowed into the main body 22 passes through the second outlet 30 side, that is, flows out from the second outlet 30 through the branch invert 34, and is discharged into the drainage storage tank 14 through the emergency drain pipe 32. Is done.

  As described above, in the system 10, the flow direction of the drainage can be switched only by performing a simple operation of changing the sealing member 40 from the second outlet 30 to the first outlet 26. It is possible to store the waste water. Therefore, even in an emergency in which the public sewer 102 cannot be used, the drainage storage tank 14 can discharge the wastewater from the condominium 100. During this period, no special equipment or equipment is required, and the normal operation can be performed as usual. Drainage equipment such as toilets can be used.

  In addition, about the water required when using for drainage devices, such as a toilet, when a water supply is usable, it is good to use a water supply as it is. Alternatively, rainwater or tap water may be stored in a storage tank in advance, and when the water supply cannot be used, the water stored in the storage tank may be used.

  Further, when the public sewer 102 is restored, the sealing member 40 is returned to the original state. That is, the sealing member 40 may be removed from the first outlet 26 and replaced with the second outlet 30. As a result, the flow direction of the waste water is switched to the first outlet 26 side, and the waste water is directly conveyed to the public sewer 102 through the drain pipe 12. Further, the waste water stored in the waste water storage tank 14 may be removed using a vacuum car, an electric pump, or the like. Alternatively, a drainage pipe connected to the public sewer 102 may be provided in advance for the drainage storage tank 14, and the drainage may be discharged to the drainpipe with an electric pump and conveyed to the public sewer 102 under natural flow.

  As described above, according to this embodiment, even when the public sewer 102 cannot be used in the event of a disaster such as an earthquake, the drainage storage tank 14 can discharge the wastewater from the building, and the drainage of toilets, etc. Use of the device can be secured for a certain period.

  Moreover, since the sealing member 40 which can be manufactured cheaply as a flow-path switching means can be used by providing the drainage tub 20 in the branch part 16, the installation cost of the system 10 can be reduced. Furthermore, by switching one sealing member 40, the flow direction of drainage is switched, that is, the member that seals the first outlet 26 and the member that seals the second outlet 30 are combined, so the member cost is reduced. Can be reduced.

  In the above-described embodiment, the sealing member (flow path switching means) that can be detachably attached to both the first outlet 26 and the second outlet 30 is sealed as shown in FIG. Although the member 40 was used, it is not limited to this. For example, as shown in FIG. 9, a known water stop cock (water stop plug) 60 is used as a sealing member, and the water stop cock 60 is replaced to change the flow direction of drainage from the first outlet 26 side. You may make it switch to the 2 outflow port 30 side. As the water stop cock 60, for example, a water stop cock that exhibits a water stop function by expanding the diameter of rubber sandwiched between two disks by tightening a screw can be used.

  Further, in the above-described embodiment, the inlet 24 and the first outlet 26 are disposed at positions facing each other, and the second outlet 30 is disposed in a direction orthogonal to the inlet 24 and the first outlet 26. 24, the arrangement | positioning relationship of the 1st outflow port 26 and the 2nd outflow port 30 can be changed suitably. For example, the first outlet 26 and the second outlet 30 may be arranged so as to branch into a Y shape or a T shape with respect to the inlet 24. However, since the second outlet 30 is used in the event of an emergency, it is preferable that the first outlet 26 that is normally used is linearly connected to the inlet 24.

  Furthermore, in the above-described embodiment, the first outlet 26 and the second outlet 30 are arranged at the same height. However, as another embodiment, as shown in FIG. It is also possible to arrange the second outlet 30 higher than 26. In this case, it is preferable to arrange the bottom surface of the second outlet 30 so as to have the same height as the central axis of the first outlet 26. This is because the level of drainage flowing through the drain pipe 12 is usually lower than the central axis height of the drain pipe 12, so that the bottom surface of the second outlet 30 is about the same as the central axis of the first outlet 26. This is because, by setting the height, the second outlet 30 and the branch invert 34 can be prevented from obstructing the flow of drainage from the inlet 24 to the first outlet 26 in the normal state. If the position of the second outlet 30 is too high, the water level in the main body 22 rises when the drainage is led to the second outlet 30 in an emergency, and the upstream drainage pipe 12a (inlet) Note that drainage may flow back to the 24th side).

  Moreover, in the above-mentioned Example, although the flow direction of the waste_water | drain was switched by changing the sealing member 40 (it combines), it is not limited to this. For example, separate sealing members 40 may be used for the first outlet 26 and the second outlet 30.

  Further, for example, as another embodiment, as shown in FIG. 11, by providing a gate valve 62 for each of the first outlet 26 and the second outlet 30, the flow direction of the drainage can be switched. . That is, the two gate valves 62 can also function as flow path switching means. In this case, normally, the gate valve 62 on the first outlet 26 side is opened, and the gate valve 62 on the second outlet 30 side is closed. On the other hand, in an emergency, the gate valve 62 on the first outlet 26 side is closed and the gate valve 62 on the second outlet 30 side is opened. The gate valve 62 may be a known gate valve such as a manual valve that is manually opened and closed, and an electromagnetic valve that is electrically controlled to open and close.

  Further, in each of the above-described embodiments, the drainage basin 20 is provided at the branch portion 16. This is to allow the flow direction of the drainage to be switched using the sealing members 40, 60, but when the sealing members 40, 60 are not used as the flow path switching means, the drainage basin 20 Is not necessarily provided. For example, instead of providing the drainage basin 20, a three-way valve may be provided at the branch portion 16 so that the wastewater is selectively guided to one of the first outlet 26 side and the second outlet 30 side. Good.

  Further, in each of the above-described embodiments, the branch portion 16 is disposed outside the drainage storage tank 14, and the wastewater flowing out from the second outlet 30 is guided to the drainage storage tank 14 using the emergency drain pipe 32. However, it is not limited to this. For example, the site drainage pipe 12 a is piped so as to penetrate the drainage storage tank 14, and the branch portion 16 is disposed inside the drainage storage tank 14. In an emergency, the waste water may be discharged directly from the second outlet 30 into the waste water storage tank 14.

  As another embodiment of the present invention, an overflow pipe 64 can be provided for the drainage storage tank 14 as shown in FIG. The overflow pipe 64 is connected to the upper portion of the drainage storage tank 14 at the upstream end thereof, and is disposed to the public sewer 102 with a predetermined gradient, and the downstream end thereof is connected to the public sewer 102. By providing such an overflow pipe 64 in the drainage storage tank 14, even if wastewater exceeding the capacity of the drainage storage tank 14 is discharged in an emergency, the drainage is discharged to the public sewer 102 through the overflow pipe 64. I can escape. Thereby, it can prevent that drainage flows backward into drain pipe 12 in site 104, and drain pipe 12 is clogged. In addition, the waste water storage tank 14 provided with the overflow pipe 64 is applicable to any of the systems 10 of the above-described embodiments.

  In addition, since it is necessary for the system 10 to install the drainage storage tank 14, the emergency drain pipe 32, etc. in the basement, it is preferable to construct in advance when building a new building such as an apartment, but in addition to the existing apartment It can also be constructed.

  In each of the embodiments described above, one drainage storage tank 14 is provided, but a plurality of drainage storage tanks 14 may be provided. In this case, when one drainage storage tank 14 becomes full, it is preferable to switch to another drainage storage tank 14 to store drainage.

  Further, not only when the sewage pipe and the miscellaneous drain pipe are joined together and connected to the public sewer 102, but also when the sewage pipe and the miscellaneous drain pipe are separately connected to the public sewer 102, the system 10 is used. Applicable. In this case, for example, it is good to provide the branch part 16 in each of a sewage pipe and a miscellaneous drainage pipe. The waste water that flows out from the second outlet 30 of each branch portion 16 may be stored in common in one drainage storage tank 14 or may be stored separately in the two drainage storage tanks 14. Good. Moreover, for example, the branch part 16 may be provided in the sewage pipe, and only the sewage may be stored in the drainage storage tank 14. Accordingly, at least a toilet that is highly necessary in an emergency can be used.

  It should be noted that the specific numerical values such as the dimensions given above are merely examples, and can be appropriately changed according to necessity such as product specifications.

DESCRIPTION OF SYMBOLS 10 ... Building drainage system 12, 12a ... Drain pipe 14 ... Emergency drainage storage tank 16 ... Branch 20 ... Drainage tank 24 ... Inlet 26 ... First outlet 28 ... Invert 30 ... Second outlet 32 ... Emergency Drain pipe 34 ... Branch invert 40, 60 ... Sealing member (flow path switching means)
62 ... Gate valve (flow path switching means)
100 ... condominium 102 ... public sewer

Claims (5)

A building drainage system including a drain pipe for transporting wastewater generated in a building to a public sewer,
Emergency drainage reservoir which is buried underground, and includes a catch basin is provided that branches part provided in the drain pipe,
The drainage basin is
A bottomed cylindrical gutter body having an inflow port, a first outflow port connected to the public sewer, and a second outflow port connected to the emergency drainage storage tank ; and
The waste water flows from the inlet with a flow path switching means selectively electrically Kutame against either one of the first outlet port side and said second outlet port side,
A building drainage system in which a sealing member that can be replaced with respect to the first outlet and the second outlet is used as the flow path switching means . An invert connecting the inflow port and the first outflow port and a branch invert branching from the invert and extending to the second outflow port are formed on the bottom surface of the saddle body,
The building drainage system according to claim 1 , wherein when the sealing member is attached to the second outlet, the sealing member seals the second outlet and closes the branch invert . The building drainage system according to claim 1 or 2 , wherein the second outlet is provided at a position higher than the first outlet . A drainage basin used in the building drainage system according to any one of claims 1 to 3,
A bottomed cylindrical gutter body having an inflow port, a first outflow port and a second outflow port, and waste water flowing in from the inflow port to either the first outflow port side or the second outflow port side A drainage basin provided with a flow path switching means for selectively guiding. The drainage basin according to claim 4 , wherein the flow path switching unit includes a sealing member that can be replaced with respect to the first outlet and the second outlet.

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