JP2014066097A - Drainage system for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel drainage system for a building including drain pipes for conveying drain water generated within the building to a public sewerage system.SOLUTION: A drainage system 10 for a building is applied to a condominium 100 or the like and comprises drain pipes 12 for conveying drain water discharged from drainage instruments of toilets or the like to a public sewerage system 102. The drain pipe 12 includes a closing part 22 such as a gate valve. An opening part 36 is provided in an upper part of a pipe wall of the drain pipe 12 at an upstream side of the closing part 22. In the case of emergency where the public sewerage system 102 is not available, a conduit line is closed by the closing part 22. Then, drain water flowing in the drain pipe 12 overflows from the opening part 36 and is stored in an emergency drain water reservoir tank 14 in place of being discharged to the public sewerage system 102. Thus, even when the public sewerage system is not available in disaster situations, the use of drainage instruments such as toilets or the like can be assured for a certain period of time.

Description

  The present invention relates to a building drainage system, and more particularly to a novel building drainage system including, for example, a drain pipe that transports wastewater generated in a building to a public sewer.

  As shown in FIG. 12, conventionally, in a building 1 such as a condominium, a drain pipe 2 through which drainage discharged from drainage devices such as toilets, kitchens, and baths of each household joins within the site 3 through gathering and the like. 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.

  Another object of the present invention is to provide a building drainage system that can make a drainage device such as a toilet usable even when a public sewer cannot be used in a disaster such as an earthquake.

  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.

  A first invention is a building drainage system including a drainage pipe that conveys wastewater generated in a building to a public sewer, and is provided in the drainage pipe and closes the pipe in the drainage pipe so as to be openable and closable. An opening that is provided in the upper part of the pipe wall of the drainage pipe at a position upstream from the closing part, and stores the drainage that has overflowed from the opening and an opening that allows the drainage to flow out by overflow when the pipe line is closed by the closing part. It is a building drainage system provided with a wastewater storage tank.

  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). The drain pipe is provided with a closing portion (22, 24) such as a gate valve that closes its internal pipe line so as to be openable and closable. An opening (36) is provided in the upper part of the pipe wall of the drain pipe upstream from the closing part. In an emergency where the public sewer cannot be used, the pipeline is closed by the closing part. The drainage blocked by the closing portion flows out of the opening due to overflow, and instead of being discharged to the public sewer, it is discharged to the emergency drainage storage tank (14) where it is temporarily stored.

  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.

  The second invention is dependent on the first invention, the opening is disposed inside the emergency drainage storage tank, and the wastewater overflowing from the opening is directly discharged to the emergency drainage storage tank.

  In the second invention, the drain pipes (12, 12a) are piped so as to pass through the inside of the emergency drain storage tank (14), and the opening (36) is arranged inside the emergency drain storage tank. . In an emergency, the waste water overflowed from the opening is directly discharged to the emergency waste water storage tank.

  According to the second invention, since the drainage is directly discharged from the opening to the emergency drainage storage tank, there is no need to separately provide piping, and the configuration of the system is simplified.

  A third invention is according to the first invention, further comprising an emergency drain pipe that is disposed outside the emergency drainage storage tank and that transports wastewater overflowed from the opening to the emergency drainage storage tank. Prepare.

  In the third invention, the drain pipes (12, 12a) are piped so as to pass outside the emergency drainage storage tank (14), and the opening (36) is arranged outside the emergency drainage storage tank. . Moreover, the emergency drain pipe (40) which conveys the waste_water | drain overflowing from the opening part to an emergency waste water storage tank is further provided. In an emergency, waste water overflowed from the opening is discharged to an emergency drain storage tank through an emergency drain pipe.

  According to the third invention, since the installation position of the emergency drainage storage tank can be set freely, it is possible to cope with the case where it is difficult to install the emergency drainage storage tank in the piping path of the drainage pipe.

  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 an illustration figure which shows the structure of the opening part vicinity at the time of the normal time of the building drainage system of FIG. It is an illustration figure which shows the structure of the opening part vicinity at the time of emergency of the building drainage system of FIG. It is an illustration figure which shows the structure of the opening part vicinity at the time of emergency of the other Example of the building drainage system of this invention. It is an illustration figure which shows the structure of the opening part vicinity at the time of emergency of the further another Example of the drainage system for buildings of this invention. It is an illustration figure which shows the structure of the opening part vicinity at the time of emergency of the further another Example of the drainage system for buildings of this invention. It is an illustration figure which shows the further another Example of the building drainage system of this invention, (a) is a top view which shows the structure of an opening part vicinity, (b) is from the pipe-axis direction of a drain pipe. It is sectional drawing which shows the structure of the opening part vicinity at the time of the normal time seen. 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 a mode that the structure of the opening part vicinity at the time of emergency of the building drainage system of FIG. 8 was seen from the pipe-axis direction of the site drainage pipe. It is an illustration figure which shows the structure of the opening part vicinity at the time of emergency 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 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 and FIG. 2, the drain pipe 12 is for leading waste water (sewage and miscellaneous drainage) from drainage devices such as toilets, kitchens, baths, washing machines and washstands to the public sewer 102. For example, it is formed by appropriately connecting a pipe made of hard vinyl chloride, a joint, or the like. 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, a cylindrical shape, or the like, and is provided in the piping path of the site drainage pipe 12a. Specifically, two through holes 16 are formed at opposite positions on the side wall 14 a of the drainage storage tank 14, and the site drainage pipe 12 a passes through the inside of the drainage storage tank 14 through the two through holes 16. Piped to pass. Between the outer peripheral surface of the site drainage pipe 12a and the inner peripheral surface of the through hole 16, a water-stopping caulking material or the like is appropriately filled, and watertightness during this time is ensured.

  An inspection port 18 is provided in the top wall 14 b of the drainage storage tank 14. The inspection port 18 is provided so as to be positioned above an opening 36 of the site drain pipe 12a described later, and is normally closed by a protective lid 20 such as an iron lid. Although not shown in the figure, it is preferable to provide a slope at the bottom of the drainage storage tank 14, and an inspection port for inserting a vacuum hose or pump-up piping is provided on the ceiling wall 14b on the downstream side of the slope. It is good to keep. Thereby, when the waste water stored in the waste water storage tank 14 is removed, the waste water is gathered at one place, and the waste water is easily pumped up. However, an inspection port for inserting a vacuum hose or the like may be provided separately from the inspection port 18 or may be shared with the inspection port 18.

  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.

  Moreover, the site | part drainage pipe 12a is provided with the closing part 22 which closes the internal pipeline so that opening and closing is possible in the part downstream from the position of the drainage storage tank 14. In this embodiment, a gate valve that opens and closes a pipe line by the vertical movement of the valve body 24 is used as the closing portion 22. Briefly, the closing part (gate valve) 22 includes a vertical tubular valve box 26, and a lower part of the valve box 26 is connected to a rubber ring receiving port or an adhesive receiving port connected to the site drainage pipe 12 a. A portion 28 is provided. In addition, a disc-shaped valve body 24 connected to the handle 30 via a valve rod is housed inside the valve box 26. When the handle 30 is manually rotated, the valve body 24 moves up and down to open and close the conduit. However, as the gate valve, not only a manual valve that is manually opened and closed, but also an electromagnetic valve that is electrically opened and closed can be used.

  A pit 32 is provided so as to cover the periphery of the handle 30 of the closing portion 22. The pit 32 is for forming a space around the handle 30 so that the closing portion 22 can be opened and closed from the ground, and is formed in a cylindrical shape, a rectangular tube shape, or the like. A protective lid 34 such as an iron lid is provided at the upper end opening of the pit 32. The pit 32 is basically made of concrete, but the material thereof is not particularly limited, and can be formed of synthetic resin or metal.

  Further, the site drainage pipe 12 a is provided with an opening 36 at a position near the upstream side of the closing portion 22 and passing through the inside of the drainage storage tank 14. The opening 36 is formed in a short tubular shape that branches off from the upper part of the pipe wall of the site drainage pipe 12a, and has an inner diameter of, for example, 200 mm. In this embodiment, the opening 36 is a T-shaped joint provided with a pipe body having connecting portions such as an adhesive receptacle and a rubber ring receptacle at both ends, and a short pipe portion branched in a direction orthogonal to the pipe body. Is incorporated into the site drainage pipe 12a. That is, the opening part 36 is provided in the pipe wall upper part of the site drainage pipe 12a by connecting the upstream site drainage pipe 12a and the downstream site drainage pipe 12a with the T-shaped joint. The T-shaped joint is a part of the drain pipe 12 and is formed of the same material as the other parts of the drain pipe 12, for example, hard vinyl chloride.

  A cap 38 is provided at the end opening of the opening 36. This cap 38 prevents leakage of odor from the opening 36 in normal times, and for example, a cap with a rubber ring is used.

  In such a system 10, normally, as shown in FIG. 2, the closing portion 22 is opened, and the end opening of the opening 36 is sealed by the cap 38 (normal mode). . When a drainage device such as a toilet is used in this normal mode, the drainage passes through the drainage pipe 12 to the public sewer 102 as it is. At this time, since the opening 36 is provided in the upper part of the pipe wall of the site drainage pipe 12 a, the flow of drainage is not hindered by the opening 36.

  On the other hand, as shown in FIG. 3, in an emergency in which the public sewer 102 cannot be used due to a disaster such as an earthquake, the drainage from the drainage device is not discharged to the public sewer 102 but from the opening 36. It is discharged into the drainage storage tank 14 where it is temporarily stored.

  More specifically, in an emergency, a predetermined operator such as a manager of the apartment 100 inserts a hand from the end opening of the pit 32 and rotates the handle 30 of the closing portion 22 to rotate the valve. The body 24 is lowered and the closing part 22 is closed (the pipe line is closed). Further, a hand is inserted from the inspection port 18 of the drainage storage tank 14 and the cap 38 of the opening 36 is removed. In addition, while making the closing part 22 into a closed state, after removing the cap 38 of the opening part 36, it is good to return each protective lid | cover 20 and 34 to the original.

  When a drainage device such as a toilet is used in a state where the pipe line is closed by the closing portion 22 and the cap 38 is removed from the opening portion 36 (emergency mode), the drainage passes through the drainage pipe 12 and the closing portion. However, the flow is blocked by the valve body 24 of the closing portion 22. When the inside of the site drainage pipe 12a near the opening 36 becomes full due to drainage blocked by the valve body 24, the drainage flows out of the opening 36 due to overflow and is directly discharged into the drainage storage tank 14.

  As described above, in the system 10, the drainage is overflowed from the opening 36 and stored in the drainage storage tank 14 simply by performing the simple operation of closing the closing portion 22 and removing the cap 38 of the opening 36. be able to. 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.

  Moreover, when the public sewer 102 is restored, the cap 38 of the closing portion 22 and the opening 36 is returned to the original state. That is, the valve body 24 may be raised to open the closing portion 22 and the opening 36 may be sealed with the cap 38. As a result, the drainage is conveyed to the public sewer 102 through the drain pipe 12 as it is. 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.

  Further, since the drainage storage tank 14 is provided so as to receive the drainage from the opening 36 of the drainage pipe 12 and the drainage is directly discharged from the opening 36 to the drainage storage tank 14, there is no need to separately provide piping. The configuration of 10 is simplified.

  In the above-described embodiment, only one opening 36 is provided in the site drainage pipe 12a, but a plurality of openings 36 may be provided in the site drainage pipe 12a. For example, as shown in FIG. 4, it is preferable to provide a plurality of openings 36 in the site drainage pipe 12a by incorporating a plurality (two in FIG. 4) of T-shaped joints into the site drainage pipe 12a. Thereby, even when the flow rate of the drainage is large, the drainage can be reliably discharged from the opening 36 to the drainage storage tank 14, and therefore the clogging of the site drainage pipe 12a can be prevented.

  In the above-described embodiment, the opening 36 is formed using a T-shaped joint. However, the opening 36 may be formed by connecting a saddle-type branch joint. Further, the shape of the opening 36 is not particularly limited. For example, the opening 36 is not necessarily formed in a short tubular shape, and may be a simple opening (notch) formed in the site drainage pipe 12a as shown in FIG. In this case, the opening 36 may be an elliptical opening or a rectangular opening. Of course, there may be a plurality of openings.

  Furthermore, in the above-described embodiment, the opening 36 is formed at the top of the pipe wall of the site drain pipe 12a. However, the opening 36 may be formed in the upper half of the pipe wall. An opening 36 may be provided at an oblique upper portion of the tube wall of the tube 12a.

  Furthermore, in the above-described embodiment, the opening 36 is sealed using the cap 38 with a rubber ring, but the cap 38 is not necessarily provided. In an emergency, the person in charge of the work manually removes the cap 38, but the present invention is not limited to this. For example, when a cap that does not have a rubber ring enough to cover the opening 36 is used as the cap 38 and the drainage is overflowed in an emergency, the cap 38 is naturally removed by the water pressure of the drainage, and the opening 36 opens. You may make it do. In this case, the cap 38 may be connected in advance to the storage tank 14 or the opening 36 with a chain or the like to prevent the cap 38 from falling. As a result, it is possible to reduce the work load on the person in charge of the work in an emergency while preventing leakage of the odor from the opening 36 at the normal time.

  Moreover, in the above-mentioned Example, although the closing part 22 is provided in the exterior of the waste water storage tank 14, the closing part 22 can also be provided in the inside of the waste water storage tank 14. When the closing part 22 is provided in the drainage storage tank 14, the opening / closing operation of the closing part 22 may be performed using the inspection port 18. By providing the closing part 22 in the drainage storage tank 14, the closing part 22 can be provided at a position closer to the opening 36. If the distance between the closing portion 22 and the opening portion 36 is increased, the portion filled with drainage in an emergency becomes longer, so that the drain pipe 12 may remain clogged at the time of restoration. By providing it in the vicinity of the opening 36, this fear is eliminated. However, when the closing part 22 is provided in the drainage storage tank 14, if the drainage storage tank 14 is filled with drainage, the closing part 22 is also immersed in the drainage, and the closing part 22 may cause malfunction. Cost.

  Furthermore, in the above-described embodiment, a gate valve is used as the closing portion 22, but the closing portion 22 can open and close the pipeline in the drain pipe 12 without obstructing the normal drainage flow. As long as it can be closed, the mode is not particularly limited. For example, as shown in FIG. 6, a water stop cock (water stop plug), a sandbag, or the like can be used as the closing portion 22 so that the pipe line in the drain pipe 12 can be opened and closed. In the case of using a stop cock etc. as the closing part 22, for example, normally, keep the stop cock etc. in another place, and insert the stop cock etc. from the opening 36 in an emergency, It is preferable to attach a stop cock or the like into the downstream site drain pipe 12a. As the water stop cock, for example, it is preferable to use one made of synthetic resin, having an outer peripheral surface along the inner peripheral surface of the site drainage pipe 12a, and having an O-ring or the like attached to the outer peripheral surface.

  Further, as another embodiment of the present invention, as shown in FIG. 7, a shallow small space 14c extending from the upper portion is formed in the drainage storage tank 14, and an opening 36 is disposed in the small space 14c. You can also Specifically, a rectangular parallelepiped small space 14c is formed in the drainage storage tank 14 so as to protrude laterally from the upper part thereof. The small space 14c is shallower than the other part of the internal space of the drainage storage tank 14, and the bottom surface of the small space 14c is inclined. Further, the site drainage pipe 12a is piped so as to penetrate the small space 14c, and an opening 36 is formed in a portion passing through the small space 14c. In addition, the closing part (gate valve) 22 as shown in FIG. 2 can also be arrange | positioned with the opening part 36 in the small space 14c.

  Thus, when the shallow space 14c is formed in the drainage storage tank 14, and the opening portion 36 is disposed in the small space 14c, when the cap 38 of the opening portion 36 is attached to or detached from the inspection port 18, etc. It is possible to avoid the danger that the person in charge of the work accidentally falls into the drainage storage tank 14 from the inspection port 18.

  Next, a system 10 that is another embodiment of the present invention will be described with reference to FIGS. In any of the above-described embodiments, the drainage is directly discharged to the drainage storage tank 14 from the opening 36 provided in the drainage pipe 12. However, in the embodiment shown in FIG. And an emergency drain pipe 40 that conveys waste water overflowed from the opening 36 to the drainage storage tank 14 in an emergency. Hereinafter, a specific description will be given with reference to FIGS. 8 and 9. The same reference numerals are used for the same parts as in the above-described embodiment, and the description thereof is omitted or simplified.

  As shown in FIGS. 8 and 9, the system 10 of this embodiment includes a drain pipe 12 that drains water from a drainage device such as a toilet and guides it to the public sewer 102, and is a site remote from the piping path of the drain pipe 12. A drainage storage tank 14 is buried in the basement 104. However, it is preferable that the site drainage pipe 12 a is piped so as to pass near the drainage storage tank 14.

  Moreover, the site | part drainage pipe 12a merged together by the drainage pipe 12 gathering etc. is provided with the closing part (gate valve) 22 which closes the internal pipe line so that opening and closing is possible. A pit 32 is provided so as to cover the periphery of the handle 30 of the closing portion 22, and a protective lid 34 such as an iron lid is provided at the upper end opening of the pit 32.

  Furthermore, an opening 36 is provided in the upper portion of the pipe wall of the site drainage pipe 12a at a position near the upstream side of the closing portion 22. An emergency drain pipe 40 is connected to the opening 36. The emergency drain pipe 40 is made of, for example, hard vinyl chloride, and its downstream end is connected to the upper part of the drainage storage tank 14. The inner diameter of the emergency drain pipe 40 is, for example, 200 mm.

  In this embodiment, normally, the closing portion 22 is opened. When a drainage device such as a toilet is used in this normal mode, the drainage passes through the drainage pipe 12 to the public sewer 102 as it is. At this time, since the opening 36 is provided in the upper part of the pipe wall of the drain pipe 12, the flow of drainage is not hindered by the opening 36.

  On the other hand, in an emergency when the public sewer 102 cannot be used, the closing portion 22 is closed. Then, the waste water from the drainage device such as a toilet is conveyed to the position of the closing portion 22 through the drain pipe 12, but the flow is blocked by the closing portion 22. Then, when the site drainage pipe 12a near the opening 36 becomes full, the drainage flows out of the opening 36 due to overflow and passes through the emergency drainage pipe 40 into the drainage storage tank 14 as shown in FIG. Discharged.

  According to the embodiment shown in FIG. 8, the drainage can be overflowed from the opening 36 and stored in the drainage storage tank 14 only by performing a simple operation of closing the closing portion 22. Therefore, even when the public sewer 102 cannot be used at the time of a disaster such as an earthquake, the drainage storage tank 14 can discharge the wastewater from the building, and the use of drainage equipment such as a toilet can be secured for a certain period.

  Further, according to the embodiment shown in FIG. 8, the installation position of the drainage storage tank 14 can be freely set, so that it is difficult to install the drainage storage tank 14 in the piping path of the drainage pipe 12 (for example, the drainage pipe 12 In the case where there is no installation space for the drainage storage tank 14).

  In the embodiment shown in FIG. 8, the emergency drain pipe 40 is directly connected to the opening 36. However, the present invention is not limited to this. For example, a pit is provided so as to cover the periphery of the opening 36, and drainage overflowed from the opening 36 is received by the pit. Then, the bottom of the pit and the drainage storage tank 14 can be connected by the emergency drain pipe 40 so that the drainage received in the pit can be conveyed to the drainage storage tank 14 by the emergency drain pipe 40.

  As another embodiment of the present invention, as shown in FIG. 10, a stepped portion 44 may be formed in the site drainage pipe 12a by providing a drop rod 42 on the upstream side of the opening 36. it can. The height of the stepped portion 44 is approximately the same as the inner diameter of the laying drain pipe 12a, for example. Thus, by forming the stepped portion 44 in the site drainage pipe 12a, when the drainage is overflowed, the backflow of the drainage to the upstream side is prevented by the stepped portion 44, that is, stays in the site drainage pipe 12a. The amount of drainage can be reduced, and odor can be suppressed.

  Furthermore, as another embodiment of the present invention, as shown in FIG. 11, an overflow pipe 46 for full water can be provided for the drainage storage tank 14. The overflow pipe 46 for full water is connected to the upper part of the drainage storage tank 14 at the upstream end, and is disposed to the public sewer 102 with a predetermined gradient, and the downstream end is connected to the public sewer 102. . By providing such a full-water overflow pipe 46 in the drainage storage tank 14, even if wastewater exceeding the capacity of the drainage storage tank 14 is discharged in an emergency, the overflow pipe 46 for full-water use is provided. The drainage can be released to the public sewer 102 through the network. Thereby, it can prevent that drainage flows backward into drain pipe 12 in site 104, and drain pipe 12 is clogged. In addition, the drainage storage tank 14 provided with the overflow pipe 46 for when the water is full is applicable to any of the systems 10 of the above-described embodiments.

  In addition, since it is necessary for the system 10 to provide the drainage storage tank 14, the emergency drain pipe 40, etc. in the basement, it is preferable to construct it beforehand 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, an opening 36 may be provided in each of the sewage pipe and the miscellaneous drainage pipe. The drainage water that flows out from each opening 36 may be stored in common in one drainage storage tank 14, or may be stored separately in two drainage storage tanks 14. Further, for example, an opening 36 may be provided in the sewage pipe so that only the sewage is 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 22 ... Closure part 36 ... Opening part 40 ... Emergency drain pipe 100 ... Apartment 102 ... Public sewer

Claims (3)

A building drainage system including a drain pipe for transporting wastewater generated in a building to a public sewer,
A closing portion that is provided in the drain pipe and closes the pipe line in the drain pipe so as to be openable and closable;
Provided in the upper part of the pipe wall of the drainage pipe at a position upstream from the closing part, and when the pipe line is closed by the closing part, the opening overflows the drainage by overflow, and overflowed from the opening part A building drainage system comprising an emergency drainage storage tank for storing drainage. The opening is disposed inside the emergency drainage storage tank,
The building drainage system according to claim 1, wherein drainage overflowed from the opening is directly discharged to the emergency drainage storage tank. The opening is disposed outside the emergency drainage storage tank,
The building drainage system according to claim 1, further comprising an emergency drain pipe that conveys drainage overflowed from the opening to the emergency drainage storage tank.

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