JP2019157594A - Joint and sewage drainage system - Google Patents

Abstract

To provide a sewage discharge system that facilitates maintenance and facilitates switching of a flow channel for drainage of sewage and the like.SOLUTION: A joint 20 comprises a joint body 21 and a switching plug 22. The joint body 21 is formed with a water inlet 32 into which the drainage flows, a first water outlet 33 and a second water outlet 34 from which the drainage flow out, and a switching port 31, and has a space 30 inside. The switching plug 22 can be inserted into the space 30 of the joint body 21 from the switching port 31, and is switchable between a first state S1 and a second state S2, where in the first state, the water inlet 32 and the first water outlet 33 are communicated so that the drainage does not flow from the water inlet 32 to the second water outlet 34, and in the second state, the water inlet 32 and the second water outlet 34 are communicated so that drainage does not flow from the water inlet 32 to the first water outlet 33.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a joint and a sewage discharge system.

  Conventionally, a sewage discharge system that discharges sewage from a sewage facility to a sewage main is known. Examples of the sewage facility include a toilet, a bath, or a kitchen sink. This kind of sewage discharge system is provided with an outflow pipe connecting the sewage equipment and the sewage main. The sewage discharged from the sewage facility is discharged to the sewage main through the outflow pipe.

  By the way, when a disaster such as an earthquake or tsunami occurs, the sewage main may be damaged. When the sewage main pipe is damaged, sewage leaks from the sewage main pipe, and there is a possibility that a bad odor generated from the sewage leaks to the outside.

  Patent Document 1 discloses a drainage facility that stops discharging sewage to the sewage main when the sewage main is damaged, and stores it in a storage tank in the building. This drainage facility includes an internal conduit connected to the sewage facility, an external conduit connected to the sewage main, and a storage tank composed of a pit under the floor.

  In one drainage facility disclosed in Patent Document 1 (hereinafter referred to as a first drainage facility), the internal conduit and the external conduit are connected by a switching valve installed on the floor. The switching valve and the storage tank are connected by a storage drain pipe. Normally, the switching valve is set so as to connect the internal pipeline and the external pipeline, and the sewage from the sewage facility is discharged to the sewage main. In the event of a disaster, the switching valve is switched to connect the internal pipe and the storage drain pipe. Thereby, the sewage from the sewage facility is not discharged into the sewage main, but is discharged into the storage tank.

  In another drainage facility disclosed in Patent Document 1 (hereinafter referred to as a second drainage facility), the internal conduit and the external conduit are connected by a detachable joint disposed in a pit under the floor. . A hole into which a lid is fitted is formed in the floor above the joint. Normally, the internal pipeline and the external pipeline are connected by a joint, and sewage from the sewage facility is discharged to the sewage main. In the event of a disaster, the lid is opened, and the joints arranged in the pit are removed from the internal and external pipes through the holes formed in the floor. As a result, the communication state between the internal pipeline and the external pipeline is released, and the downstream end of the internal pipeline is opened in the pit. Therefore, the sewage discharged from the sewage facility does not flow to the external pipeline but is discharged and stored in the pit.

Japanese Patent No. 3152889

  By the way, solid matter may be mixed in sewage. In general, since the flow path of the switching valve is thin, solids are likely to be clogged. In the first drainage facility, the switching valve may be clogged with solid matter, and the flow path may not be switched during a disaster. Also, when the switching valve is clogged with solid matter, it is necessary to remove the switching valve from the internal and external pipes and replace it with a new switching valve, which requires labor and time. Necessary.

  In the second drainage facility, a piping work of removing the joint is necessary at the time of a disaster, and a piping work of connecting the internal pipe line and the external pipe line again by the joint is required at the time of recovery from the disaster. Therefore, much labor and time are required for switching the flow path of sewage. Moreover, it is necessary to form holes in the floor in advance for these piping operations.

  The present invention has been made in view of such a point, and an object thereof is to provide a joint and a sewage discharge system that are easy to maintain and that can easily perform an operation of switching a flow path of drainage such as sewage.

  The joint according to the present invention includes a joint body and a switching plug. The joint body has an inlet into which drainage flows, a first outlet and a second outlet from which drainage flows out, and a switching port, and has a space inside. The switching plug can be inserted into the space of the joint body from the switching port, and communicates the inlet and the first outlet so that drainage does not flow from the inlet to the second outlet. One or two switches that can be switched between a first state and a second state in which the inflow port and the second outflow port are communicated so that drainage does not flow from the inflow port to the first outflow port. It is a plug.

  According to the joint according to the present invention, the operator switches the switching plug from the first state to the second state through the switching port, or switches the switching plug from the second state to the first state. The drainage channel can be switched. Therefore, the drainage flow path can be switched without performing piping work to reconnect the joint to the pipe line. Further, the operator can switch the drainage channel by operating the switching plug while checking the inside of the joint body. Therefore, it is easy to switch the drainage flow path. In the joint according to the present invention, when the solid body is clogged in the joint body, the operator can remove the solid body in the joint body through the switching port. Therefore, since the solid matter in the joint body can be removed without performing piping work, maintenance is easy.

  According to a preferred aspect of the present invention, the switching plug includes a first plug inserted into the space of the joint body in the first state, and a joint plug of the joint body in the second state. A second plug inserted into the space. The first plug connects a first inflow communication port communicating with the inflow port, a first outflow communication port communicating with the first outflow port, and the first inflow communication port and the first outflow communication port. A first plug body having a first invert is formed. The second plug connects the second inflow communication port communicating with the inflow port, the second outflow communication port communicating with the second outflow port, and the second inflow communication port and the second outflow communication port. A second plug body having a second invert is formed.

  According to the said aspect, drainage can be poured from an inflow port to a 1st outflow port through a 1st invert by inserting a 1st plug in the space of a coupling main body. By inserting the second plug into the space of the joint body, the drainage can flow from the inlet to the second outlet through the second invert. According to the said aspect, the flow path of a waste_water | drain can be easily switched by the simple procedure of whether the switching plug inserted in the space of a coupling main body is made into a 1st plug or a 2nd plug.

  According to another preferable aspect of the present invention, the joint includes a lid that can be attached to and detached from the switching port. The joint body includes a cylindrical portion in which the second outflow port is formed at a position facing the switching port. The first plug includes a first fitting portion that can be fitted into the cylindrical portion. The second plug includes a second fitting portion that can be fitted into the cylindrical portion. When the first plug is inserted into the space of the joint body, the lid is configured so that the first fitting portion is fitted into the tubular portion, and the first plug is inserted into the second portion. When the second plug is pressed against the outlet side and the second plug is disposed in the space of the joint body, the second plug is fitted so that the second fitting portion is fitted to the tubular portion. It is comprised so that it may press on the said 2nd outflow port side.

  Depending on the amount and speed of the drainage flowing into the joint, the drainage collides with the joint, so that the position of any one of the first plug and the second plug arranged in the joint body space and the joint body is There is a risk of shifting. However, in the above aspect, when the first plug is disposed in the space of the joint body, the first plug is fitted so that the first fitting portion of the first plug is fitted to the tubular portion of the joint body. It is pressed against the second outlet by the lid. Therefore, the first plug can be crimped to the joint body. In addition, when the second plug is disposed in the space of the joint body, the second plug is moved by the lid so that the second fitting portion of the second plug is fitted to the tubular part of the joint body. Pressed against the second outlet side. Therefore, the second plug can be crimped to the joint body. As described above, when the first plug and the second plug are arranged in the joint body, the first plug and the second plug are pressure-bonded to the joint body. .

  According to another preferred embodiment of the present invention, a male screw is formed on a side surface of the lid. A female screw that is screwed with the male screw is formed in the switching port.

  According to the above aspect, the first plug or the second plug can be pressed to the second outlet side by attaching the lid to the switching port while screwing the male screw of the lid and the female screw of the switching port. it can. Therefore, the first plug or the second plug can be crimped to the joint body by screwing the male screw of the lid and the female screw of the switching port.

  According to another preferable aspect of the present invention, when the first plug is inserted into the space of the joint body, the first plug extends from the first plug body toward the lid. I have. The second plug includes a second protrusion that extends from the second plug body toward the lid when inserted into the space of the joint body. When the first plug is inserted into the space of the joint body, the lid contacts the first protrusion, and the second plug is inserted into the space of the joint body. A contact portion that contacts the second protrusion.

  According to the above aspect, by attaching the lid body to the switching port so that the first projection portion of the first plug and the contact portion of the lid body are in contact with each other, the first projection portion is connected to the second outlet side by the contact portion. The first plug can be crimped to the joint body. By attaching the lid to the switching port so that the second projecting portion and the contact portion of the second plug are in contact with each other, the second projecting portion is pressed to the second outlet side by the contact portion, and the second plug is connected to the joint. Can be crimped to the body.

  According to another preferable aspect of the present invention, a first seal member is provided on an outer peripheral surface of the first fitting portion. A second seal member is provided on the outer peripheral surface of the second fitting portion.

  According to the said aspect, the sealing performance of the 1st fitting part of a 1st plug and the cylindrical part of a coupling main body improves by the 1st seal member. Therefore, when the first plug is inserted into the space of the joint body, the drainage can be made difficult to leak from between the first fitting portion and the cylindrical portion. The second seal member improves the sealing performance between the second fitting portion of the second plug and the tubular portion of the joint body. Therefore, when the second plug is inserted into the space of the joint body, the drainage can be prevented from leaking from between the second fitting portion and the tubular portion.

  According to another preferred aspect of the present invention, the first plug extends outwardly from a portion of the first plug body on the switching port side in a state of being inserted into the space of the joint body. One flange is provided. The second plug includes a second flange extending outward from a portion of the second plug main body on the switching port side in a state where the second plug is inserted into the space of the joint main body. The joint body has a facing surface that faces the first flange when the first plug is inserted into the space and faces the second flange when the second plug is inserted into the space. Is provided. A third seal member is provided on the surface of the first flange on the opposite surface side. A fourth seal member is provided on the surface on the opposite surface side of the second flange.

  According to the said aspect, the sealing performance of the 1st flange of a 1st plug and the opposing surface of a coupling main body improves by the 3rd seal member. Therefore, when the first plug is inserted into the space of the joint body, the drainage can be prevented from leaking from between the first flange and the facing surface. The sealing performance between the second flange of the second plug and the opposing surface of the joint body is improved by the fourth seal member. Therefore, when the second plug is inserted into the space of the joint body, the drainage can be prevented from leaking from between the second flange and the facing surface.

  The opening area of the switching port is larger than the opening areas of the inlet, the first outlet, and the second outlet.

  According to the above aspect, when the solid body is clogged in the joint body, the operator can easily find the solid body in the joint body through the switching port. Since the worker can easily remove the solid matter in the joint body through the switching port, the maintenance is easier.

  The sewage discharge system according to the present invention includes any of the above-described joints, a first outflow pipe, a second outflow pipe, and a storage tank. The first outflow pipe line is disposed downstream of the first pipe line part connected to the sewage facility and the first pipe line part and extends horizontally, and is connected to the inlet of the joint. It has a 2nd pipe line part. The second outflow pipeline is connected to the first outflow port of the joint on the downstream side of the first outflow pipeline, and extends horizontally, and the third pipeline portion It has a 4th pipe line part arranged on the more downstream side than the sewage main pipe. The storage tank is connected to the second outlet of the joint and can store sewage. The joint is arranged in a pit provided under the floor of the building.

  According to the said aspect, the wastewater discharged | emitted from the sewage equipment can be discharged | emitted to a sewer main by making the state of a switching plug into the 1st state which connects an inflow port and a 1st outflow port. Moreover, the sewage discharged | emitted from the sewage equipment can be discharged | emitted to a storage tank by making the state of a switching plug into the 2nd state which connects an inflow port and a 2nd outflow port. Therefore, by switching the state of the switching plug, it is possible to select whether the sewage discharged from the sewage facility is the sewage main or the storage tank.

  According to the present invention, maintenance is easy, and an operation of switching a flow path of drainage such as dirty water is easy.

It is a front view of the sewage discharge system which concerns on 1st Embodiment. It is a perspective view of the joint concerning a 1st embodiment. It is a perspective view of the joint concerning a 1st embodiment, and is a figure showing the state where a lid was removed. It is a figure of the joint seen from the 2nd outflow side. It is sectional drawing of the coupling in the VV cross section of FIG. 4, and is a figure which shows the state in which the 1st plug was inserted in the coupling main body. It is sectional drawing of the coupling in the VI-VI cross section of FIG. 4, and is a figure which shows the state in which the 1st plug was inserted in the coupling main body. FIG. 6 is a view corresponding to FIG. 5 showing a state in which the second plug is inserted into the joint body. FIG. 7 is a view corresponding to FIG. 6 showing a state in which the second plug is inserted into the joint body. It is a perspective view of a 1st plug. It is a perspective view of a 2nd plug. It is a plane sectional view of the joint concerning a 2nd embodiment, and is a figure where the change plug is arranged in the position of the 1st state. FIG. 12 is a view corresponding to FIG. 11 in which the switching plug is disposed at the position in the second state. It is a plane sectional view of a change plug.

  Hereinafter, an embodiment of a sewage discharge system including a joint according to the present invention will be described with reference to the drawings. The embodiments described herein are, of course, not intended to limit the present invention in particular. Moreover, the same code | symbol is attached | subjected to the member and site | part which show | plays the same effect | action, and the overlapping description is abbreviate | omitted or simplified.

<First Embodiment>
FIG. 1 is a front view of a sewage discharge system 100 according to the first embodiment. The symbol U in the drawing indicates the top, and the symbol D indicates the bottom. Moreover, the code | symbol X shows a horizontal direction (for example, left-right direction), and the code | symbol Y shows a vertical direction. Symbol GL indicates the ground. However, these directions are only directions determined for convenience of explanation, and do not limit the installation mode of the sewage discharge system 100 at all.

  The sewage discharge system 100 is a system that discharges sewage from the sewage equipment 7 arranged in the building 5 to an external sewage main pipe 8. In the present embodiment, the sewage facility 7 side is referred to as an upstream side, and the sewage main pipe 8 side is referred to as a downstream side. Here, “building” refers to a building having at least walls, such as a house, a commercial facility, a factory, a school building, and a warehouse. “Inside the building” includes not only the space above the floor surrounded by the roof and walls, but also the space below the floor. The “sewage equipment” is equipment that discharges sewage, such as a toilet, a bath, a kitchen sink, and the like. “Sewage” is water discharged from toilets, baths, kitchen sinks, etc., and cannot be discharged into the river as it is.

  As shown in FIG. 1, the sewage discharge system 100 includes a main outflow pipe 10, a joint 20 having a flow path switching function, a sub outflow pipe 60, and a storage tank 70.

  The main outflow pipe 10 connects the sewage facility 7 and the sewage main pipe 8. At least a part of the main outflow conduit 10 extends horizontally. Here, “horizontal” includes a state in which a slight gradient is given in addition to extending in a strictly horizontal direction. For example, “horizontal” includes a state in which a slope is inclined so as to incline downward from the upstream side toward the downstream side. In the present embodiment, the “pipe” means a channel through which wastewater such as sewage flows. The “pipe” may be constituted by a single pipe, or may be constituted by a plurality of pipes and other joints connecting the pipes. The other joint is different from the joint 20.

  The main outflow line 10 includes a first outflow line 11 and a second outflow line 12. The first outlet pipe 11 connects the sewage facility 7 and the joint 20. The first outflow pipe 11 has a first pipe part 11a and a second pipe part 11b. The first conduit portion 11 a constitutes the upstream side of the first outflow conduit 11. The sewage equipment 7 is connected to the 1st pipe line part 11a. In the present embodiment, one sewage facility 7 is connected to the first pipeline portion 11a, but a plurality of sewage facilities 7 may be connected via other pipes. In the present embodiment, the first pipeline portion 11a extends vertically, but a part thereof may extend horizontally.

  The second pipeline portion 11 b constitutes the downstream side of the first outflow pipeline 11. The 2nd pipe line part 11b is arrange | positioned downstream from the 1st pipe line part 11a. The 2nd pipe line part 11b is connected to the 1st pipe line part 11a. In addition, the 2nd pipe line part 11b may be connected to the 1st pipe line part 11a via another pipe line part. The second pipe line part 11 b is connected to the joint 20. In the present embodiment, the second pipeline portion 11b extends horizontally.

  The second outflow pipe 12 connects the joint 20 and the sewage main pipe 8. The second outflow pipe 12 is disposed on the downstream side of the first outflow pipe 11. The second outflow pipe 12 has a third pipe part 12a and a fourth pipe part 12b. The third conduit portion 12 a constitutes the upstream side of the second outflow conduit 12. The third conduit portion 12 a is connected to the joint 20. In the present embodiment, the third conduit portion 12a extends horizontally.

  The fourth conduit portion 12 b constitutes the downstream side of the second outflow conduit 12. The fourth pipeline portion 12b is disposed on the downstream side of the third pipeline portion 12a. The fourth pipeline portion 12b is connected to the third pipeline portion 12a. Note that the fourth pipeline portion 12b may be connected to the third pipeline portion 12a via another pipeline portion. The fourth conduit portion 12 b is connected to the sewage main pipe 8. In the present embodiment, the fourth conduit portion 12b extends horizontally. However, a part of the fourth conduit portion 12b may extend vertically.

  Next, the joint 20 will be described. The joint 20 according to the present embodiment can switch the flow path of sewage that is an example of drainage. Specifically, the joint 20 can be switched between a state in which the sewage in the first outflow pipe 11 is discharged to the sewage main pipe 8 and a state in which the sewage in the first outflow pipe 11 is discharged to the storage tank 70. It is a thing. The joint 20 is provided in the middle part of the main outflow pipe 10. Specifically, the joint 20 is provided between the first outflow pipe 11 and the second outflow pipe 12 of the main outflow pipe 10.

  The joint 20 is installed in the pit 5 b below the floor 5 a of the building 5. Here, the floor 5a includes not only the floor on the first floor of the building 5, but also the floor on the second floor or more of the building 5. A “pit” is a space in which pipes constituting a pipe line are arranged. The pit 5b is a space surrounded by foundation beams, for example, when it is arranged under the floor 5a on the first floor of the building 5. The pit 5b is a space between the floor 5a on the second floor and the ceiling of the next lower floor when the pit 5b is arranged below the floor 5a on the second floor or higher of the building 5, for example. The “pit” is, for example, an underground pit, an underfloor pit, or a piping pit. In this embodiment, the joint 20 is provided in the upper part in the pit 5b. Specifically, the joint 20 is disposed in the pit 5b such that the distance between the joint 20 and the top surface of the pit 5b is shorter than the distance between the joint 20 and the floor of the pit 5b.

  The configuration of the joint 20 is not particularly limited. FIG. 2 is a perspective view of the joint 20. FIG. 3 is a perspective view of the joint 20 and shows a state where a lid 23 described later is removed. FIG. 4 is a view of the joint 20 viewed from the second outlet 34 side described later. FIG. 5 is a cross-sectional view of the joint 20 in the VV cross section of FIG. FIG. 6 is a cross-sectional view of the joint 20 in the VI-VI cross section of FIG. 5 and 6 are views showing a state in which a later-described first plug 40 of the switching plug 22 is inserted into the joint body 21. FIG. FIG. 7 is a view corresponding to FIG. 5 showing a state in which a later-described second plug 50 of the switching plug 22 is inserted into the joint body 21. FIG. 8 is a view corresponding to FIG. 6 illustrating a state in which the second plug 50 is inserted into the joint body 21.

  In the present embodiment, as illustrated in FIG. 2, the joint 20 includes a joint body 21, a switching plug 22 (see FIG. 3), and a lid body 23. As shown in FIG. 5, the joint body 21 has a space 30 inside. As shown in FIG. 6, the joint body 21 is formed with a switching port 31, an inflow port 32, a first outflow port 33, and a second outflow port 34. The switching port 31 is formed in the side part of the coupling main body 21, and is opened toward the side. Here, the portion of the joint body 21 that forms the switching port 31 is referred to as a diameter-expanded portion 36.

  The inflow port 32 is formed in the side part of the coupling main body 21, and is opened toward the side. In the present embodiment, the joint body 21 includes an inflow cylindrical portion 21a that extends horizontally at the side portion. The inflow port 32 is formed in the inflow cylindrical part 21a. As shown in FIG. 2, the first inlet 11 b of the first outlet pipe 11 is connected to the inlet 32. As shown in FIG. 6, the 1st outflow port 33 is formed in the side part of the coupling main body 21, and is opened toward the side. In the present embodiment, the joint body 21 includes a first outflow tubular portion 21b that extends horizontally at the side and is formed at a position facing the inflow tubular portion 21a. The 1st outflow port 33 is formed in the 1st outflow cylindrical part 21b. The first outlet 33 is arranged side by side with the inlet 32 in the horizontal direction. The first outlet 33 is opposed to the inlet 32. Here, when viewed from the first outlet 33 side, the inlet 32 and the first outlet 33 overlap. As shown in FIG. 2, the first outlet 33 is connected to the third conduit portion 12 a of the second outflow conduit 12.

  As shown in FIG. 4, the 2nd outflow port 34 is formed in the side part of the coupling main body 21, and is opened toward the side. In the present embodiment, as shown in FIG. 6, the joint main body 21 includes a second outflow cylindrical portion 21 c that extends laterally at a position facing the switching port 31. The 2nd outflow port 34 is formed in the 2nd outflow cylindrical part 21c. The second outflow cylindrical portion 21c is an example of the “tubular portion” in the present invention. The 2nd outflow port 34 is formed in the site | part facing the switching port 31 in the coupling main body 21 so that the switching port 31 may be opposed. In the present embodiment, the second outlet 34 overlaps the switching port 31 when viewed from the switching port 31 side. As shown in FIG. 2, a sub outflow conduit 60 is connected to the second outflow port 34, and is connected to a storage tank 70 (see FIG. 1) via the sub outflow conduit 60.

  In the present embodiment, as shown in FIG. 6, the switching port 31, the inflow port 32, the first outflow port 33, and the second outflow port 34 communicate with each other through the space 30 of the joint body 21. The opening area of the switching port 31 is larger than the opening area of the inflow port 32, larger than the opening area of the first outflow port 33, and larger than the opening area of the second outflow port 34. In other words, in the present embodiment, the diameter of the switching port 31 is larger than the diameter of the inflow port 32, larger than the diameter of the first outflow port 33, and larger than the diameter of the second outflow port 34. Here, the opening area of the inlet 32, the opening area of the first outlet 33, and the opening area of the second outlet 34 are the same. In other words, the diameter of the inlet 32, the diameter of the first outlet 33, and the diameter of the second outlet 34 are the same. However, any of the opening areas of the inflow port 32, the first outflow port 33, and the second outflow port 34 may be larger or smaller than the other opening areas.

  In the present embodiment, the diameter of the inlet 32 and the diameter of the portion on the inlet 32 side of the second pipe portion 11b are substantially the same, and the diameter of the first outlet 33 and the third pipe portion 12a. The diameter of the part on the first outlet 33 side is substantially the same, and the diameter of the second outlet 34 and the diameter of the part on the second outlet 34 side of the sub outflow pipe 60 are substantially the same. Here, the diameter of the flow path through which sewage flows is not reduced. For example, in a switching valve as disclosed in Patent Document 1, the diameter of a flow path through which sewage flows is smaller than the diameter of a pipe line connected to the switching valve. Thus, the joint 20 according to the present embodiment and the switching valve have different flow path diameters.

  In the present embodiment, a facing surface 37 is provided in the space 30 of the joint body 21. The facing surface 37 is provided at a portion of the joint body 21 on the switching port 31 side. As shown in FIG. 3, the facing surface 37 extends inward from the inner peripheral surface of the joint body 21. Here, the facing surface 37 is a surface along the top and bottom of the enlarged diameter portion 36 of the joint body 21.

  The switching plug 22 switches the sewage flow path in the joint body 21. The switching plug 22 can be inserted into the space 30 of the joint body 21 from the switching port 31. The switching plug 22 can be switched between the first state S1 (see FIG. 6) and the second state S2 (see FIG. 8). Here, as shown in FIG. 6, the first state S <b> 1 refers to the inlet 32 and the first outlet 33 so that sewage does not flow from the inlet 32 to the second outlet 34 in the joint body 21. Is in a state of communicating. As shown in FIG. 8, the second state S <b> 2 is a state where the inlet 32 and the second outlet 34 are communicated so that sewage does not flow from the inlet 32 to the first outlet 33. In the present embodiment, the switching plug 22 includes a first plug 40 (see FIG. 6) and a second plug 50 (see FIG. 8), and is configured by two members. Here, as shown in FIG. 6, the first state S <b> 1 is realized by the first plug 40. The first plug 40 is disposed in the space 30 of the joint body 21 in the first state S1. The first plug 40 closes the second outlet 34 in the first state S1. As shown in FIG. 8, the second state S <b> 2 is realized by the second plug 50. The second plug 50 is disposed in the space 30 of the joint body 21 in the second state S2. The second plug 50 closes the first outlet 33 in the second state S2.

  FIG. 9 is a perspective view of the first plug 40. As shown in FIG. 9, the first plug 40 includes a first plug body 41, a first fitting portion 42, and a first flange 43. The first plug body 41 has a space inside. The first plug body 41 has a shape corresponding to the inner peripheral surface of the joint body 21. As shown in FIG. 6, the first plug body 41 is formed with a first inflow communication port 45, a first outflow communication port 46, and a first invert 47.

  The first inflow communication port 45 is formed in the side portion of the first plug body 41 and opens toward the side. In a state where the first plug 40 is inserted into the space 30 of the joint body 21, the first inflow communication port 45 communicates with the inflow port 32. The first outflow communication port 46 is formed on the side of the first plug body 41 and opens toward the side. In the present embodiment, the first outflow communication port 46 faces the first inflow communication port 45. In a state where the first plug 40 is inserted into the space 30 of the joint body 21, the first outflow communication port 46 communicates with the first outflow port 33. Here, the diameter of the first outflow communication port 46 is the same as the diameter of the first inflow communication port 45, but may be larger or smaller than the diameter of the first inflow communication port 45. The first invert 47 is provided inside the first plug body 41 and connects the first inflow communication port 45 and the first outflow communication port 46. In the present embodiment, the first invert 47 is a cylindrical space extending horizontally.

  In the following description regarding the first plug 40, the first plug 40 is in a state of being inserted into the space 30 of the joint body 21. As shown in FIG. 5, the 1st fitting part 42 is fitted to the 2nd outflow cylindrical part 21c in which the 2nd outflow port 34 was formed. The first fitting portion 42 is provided at a site on the second outlet 34 side of the first plug body 41. The first fitting portion 42 protrudes from the first plug body 41 toward the second outlet 34. The first flange 43 is a surface facing the facing surface 37 of the joint body 21. The first flange 43 extends outward from the end of the first plug body 41 on the switching port 31 side.

  In the present embodiment, a first projecting portion 48 that projects from the first plug body 41 toward the switching port 31 is provided at a site on the switching port 31 side of the first plug body 41. The first protrusion 48 comes into contact with the lid 23 when the lid 23 is attached to the joint body 21. In the present embodiment, the first projecting portion 48 is a rod-shaped part, and is disposed at a position surrounded by the first flange 43. In the present embodiment, the first projecting portion 48 plays a role as a handle when the first plug 40 is attached to and detached from the joint body 21.

  FIG. 10 is a perspective view of the second plug 50. As shown in FIG. 10, the second plug 50 includes a second plug main body 51, a second fitting portion 52, and a second flange 53. The second plug main body 51 has a space inside, and has a shape corresponding to the inner peripheral surface of the joint main body 21. As shown in FIG. 8, the second plug body 51 is formed with a second inflow communication port 55, a second outflow communication port 56, and a second invert 57.

  In the following description regarding the second plug 50, the second plug 50 is in a state of being inserted into the space 30 of the joint body 21. The second inflow communication port 55 is formed on the side portion of the second plug main body 51 and opens toward the side. In a state where the second plug 50 is inserted into the space 30 of the joint body 21, the second inflow communication port 55 communicates with the inflow port 32. The second outflow communication port 56 is formed in a side portion of the second plug main body 51 and opens toward the side. The second outflow communication port 56 does not face the second inflow communication port 55. Here, the central axis of the second outflow communication port 56 and the central axis of the second inflow communication port 55 are orthogonal to each other. The second outflow communication port 56 is formed at a portion of the second plug main body 51 on the second outflow port 34 side. In a state where the second plug 50 is inserted into the space 30 of the joint body 21, the second outflow communication port 56 communicates with the second outflow port 34. Here, the diameter of the second outflow communication port 56 is the same as the diameter of the second inflow communication port 55, but may be larger or smaller than the diameter of the second inflow communication port 55.

  The second invert 57 is provided inside the second plug body 51 and connects the second inflow communication port 55 and the second outflow communication port 56. In the present embodiment, the second invert 57 is a cylindrical space, and a part thereof is curved.

  The 2nd fitting part 52 is fitted to the 2nd outflow cylindrical part 21c in which the 2nd outflow port 34 was formed. The second fitting portion 52 is provided at a site on the second outlet 34 side of the second plug main body 51. The second fitting part 52 protrudes from the second plug body 51 toward the second outlet 34. In the present embodiment, a second outflow communication port 56 is formed inside the second fitting portion 52. As shown in FIG. 7, the second flange 53 is a surface facing the facing surface 37 of the joint body 21. The second flange 53 extends outward from the end of the second plug body 51 on the switching port 31 side.

  In the present embodiment, a second projecting portion 58 projecting from the second plug body 51 toward the switching port 31 is provided at a portion of the second plug body 51 on the switching port 31 side. The second projecting portion 58 comes into contact with the lid body 23 in the same manner as the first projecting portion 48 when the lid body 23 is attached to the joint body 21. In the present embodiment, the second projecting portion 58 is a rod-shaped part, and is disposed at a position surrounded by the second flange 53. The second projecting portion 58 plays a role as a handle when the second plug 50 is attached to and detached from the joint body 21.

  In the present embodiment, as shown in FIG. 6, in a state where the first plug 40 is inserted in the space 30 of the joint body 21, the first fitting portion 42 and the second outflow tubular portion 21 c of the joint body 21 A first seal member 49a is provided between them. The first seal member 49a is a ring-shaped member and is formed of an elastic member. The first seal member 49a is made of rubber, for example. In the present embodiment, a ring-shaped groove is formed on the outer peripheral surface of the first fitting portion 42, and a first seal member 49a is attached to the groove. That is, the first seal member 49 a is provided in the first fitting portion 42. However, the first seal member 49 a may be provided in the second outflow cylindrical portion 21 c of the joint body 21. The first seal member 49a may be sandwiched between the first fitting portion 42 and the second outflow cylindrical portion 21c.

  As shown in FIG. 8, in the state where the second plug 50 is inserted into the space 30 of the joint body 21, the second seal member is interposed between the second fitting portion 52 and the second outflow cylindrical portion 21c. 59a is provided. Similar to the first seal member 49a, the second seal member 59a has a ring shape and is a rubber member. In the present embodiment, a ring-shaped groove to which the second seal member 59a is attached is formed on the outer peripheral surface of the second fitting portion 52. Thus, here, the second seal member 59 a is provided in the second fitting portion 52. However, the second seal member 59a may be provided in the second outflow cylindrical portion 21c of the joint body 21. In this case, the first seal member 49a and the second seal member 59a are the same member. The second seal member 59a may be sandwiched between the second fitting portion 52 and the second outflow cylindrical portion 21c.

  In the present embodiment, as shown in FIG. 6, in a state where the first plug 40 is inserted into the space 30 of the joint main body 21, the first flange 43 and the opposing surface 37 of the joint main body 21 have a first Three seal members 49b are provided. The third seal member 49b is a ring-shaped member and is formed of an elastic member such as rubber. In the present embodiment, the third seal member 49 b is provided on the first flange 43. However, the third seal member 49 b may be provided on the facing surface 37 of the joint body 21. The third seal member 49 b may be sandwiched between the first flange 43 and the facing surface 37.

  As shown in FIG. 8, a fourth seal member 59 b is provided between the second flange 53 and the facing surface 37 in a state where the second plug 50 is inserted into the space 30 of the joint body 21. . Similar to the third seal member 49b, the fourth seal member 59b has a ring shape and is a rubber member. In the present embodiment, the fourth seal member 59 b is provided on the second flange 53. However, the fourth seal member 59b may be provided on the facing surface 37 of the joint body 21. In this case, the third seal member 49b and the fourth seal member 59b are the same member. Further, the fourth seal member 59b may be sandwiched between the second flange 53 and the facing surface 37.

  The lid body 23 is a member that can be attached to and detached from the switching port 31 of the joint body 21. In the present embodiment, the lid body 23 has a function of pressing one of the first plug 40 and the second plug 50 to the joint body 21. Here, as shown in FIG. 6, when the first plug 40 is inserted into the space 30 of the joint body 21, the lid 23 is fitted with the first fitting portion 42 into the second outflow cylindrical portion 21 c. Thus, the first plug 40 is configured to be pressed against the second outlet 34 side. Further, as shown in FIG. 8, when the second plug 50 is inserted into the space 30, the lid body 23 is fitted so that the second fitting portion 52 is fitted to the second outflow cylindrical portion 21c. The two plugs 50 are configured to press against the second outlet 34 side.

  In the present embodiment, the lid body 23 is configured to be fixed to the switching port 31 when attached to the switching port 31. Here, the lid body 23 and the switching port 31 have a structure that can be screwed together. In the present embodiment, as shown in FIG. 7, a male screw 23 a is formed on the side peripheral surface of the lid body 23. On the inner peripheral surface of the switching port 31, a female screw 31a that is screwed with the male screw 23a is formed. The lid 23 is fixed to the switching port 31 by rotating the lid 23 with respect to the switching port 31 so that the male screw 23a of the lid 23 and the female screw 31a of the switching port 31 are screwed together. Here, it is an example of a structure in which the male screw 23a and the female screw 31a can be screwed together.

  The lid body 23 includes a contact portion 25. The contact portion 25 is a part that contacts the first protrusion 48 when the first plug 40 is inserted into the joint body 21, and when the second plug 50 is inserted into the joint body 21, 2 is a part in contact with the protrusion 58. Here, the contact portion 25 is provided at the center portion of the surface of the lid body 23 on the joint body 21 side. In the present embodiment, a peripheral convex portion 26 protruding toward the joint main body 21 is provided around the contact portion 25. The first protrusion 48 of the first plug 40 or the second protrusion 58 of the second plug 50 enters the peripheral protrusion 26. As shown in FIG. 6, when the first plug 40 is disposed in the space 30 of the joint body 21, the contact portion 25 of the lid body 23 contacts the first protrusion 48 of the first plug 40, and The protrusion 48 is pressed against the second outlet 34 side. Thus, the first plug 40 is in a state of being crimped to the joint body 21. Similarly, as shown in FIG. 8, when the second plug 50 is disposed in the space 30 of the joint body 21, the contact portion 25 of the lid 23 contacts the second protrusion 58 of the second plug 50. The second protrusion 58 is pressed against the second outlet 34 side. As a result, the second plug 50 is in a state of being crimped to the joint body 21.

  Next, the sub outflow pipeline 60 will be described. As shown in FIG. 1, the sub outflow pipeline 60 is a pipeline connecting the joint 20 and the storage tank 70. Here, as shown in FIG. 2, the upstream end of the sub outflow pipe 60 is connected to the second outlet 34 of the joint 20. As shown in FIG. 1, the downstream end of the sub outflow conduit 60 is connected to a storage tank 70.

  The storage tank 70 is a tank for storing sewage discharged from the sewage facility 7. The storage tank 70 is constituted by a tank and has a space sealed inside. In the upper part of the side surface of the storage tank 70, a sewage port 71 is formed. The downstream end of the sub outflow pipeline 60 is connected to the sewage port 71, and is connected to the second outflow port 34 of the joint 20 via the sub outflow pipeline 60.

  In the present embodiment, a cylinder 78 projects from the upper surface of the storage tank 70 in the vertical direction. The cylinder 78 is provided on the upper surface of the storage tank 70 so that the upper end is substantially the same height as the ground. An operator can maintain and inspect the inside of the storage tank 70 through the cylinder 78. Note that the upper portion of the cylinder 78 is closed by a lid 79 in a normal state.

  The configuration of the sewage discharge system 100 has been described above. Next, a method for using the sewage discharge system 100 will be described. The sewage discharge system 100 is used so as to discharge the sewage discharged from the sewage facility 7 to the sewage main pipe 8 in normal times. Further, the sewage discharge system 100 switches the sewage flow path by the joint 20 when a disaster such as an earthquake or tsunami occurs and the sewage main pipe 8 is damaged, and the sewage discharged from the sewage facility 7 is stored in the storage tank 70. Used to be discharged. In the following description, the normal usage mode is referred to as a normal mode, and the usage mode during a disaster is referred to as a disaster mode.

  In the normal mode, as shown in FIG. 6, the first plug 40 is inserted into the space 30 of the joint body 21, and the sewage switching state is the first state S <b> 1. In the normal mode, the first inflow communication port 45 of the first plug 40 and the inflow port 32 of the joint 20 communicate with each other, the first outflow communication port 46 and the first outflow port 33 of the joint 20 communicate with each other, and the second The outflow port 34 is in a closed state. In the joint 20, the lid body 23 is fitted in the switching port 31, and the first plug 40 is pressed against the second outlet 34 side by the lid body 23, so that the joint body 21 is crimped to the joint body 21. is there.

  In the normal mode, as shown in FIG. 1, the sewage discharged from the sewage facility 7 flows through the first outlet pipe 11 and then flows into the joint body 21 from the inlet 32 of the joint 20. As shown in FIG. 6, the sewage that has flowed into the joint body 21 passes through the first invert 47 of the first plug 40 and flows out of the joint body 21 from the first outlet 33. As shown in FIG. 1, the sewage flowing out from the first outlet 33 flows through the second outlet pipe 12 and is discharged to the sewage main pipe 8. The sewage flowing into the sewage main pipe 8 is guided to a sewage treatment plant or the like and purified.

  In the disaster mode, the switching plug 22 of the joint 20 is exchanged. Here, the lid body 23 is removed from the switching port 31 of the joint 20. Then, the operator inserts a hand into the space 30 of the joint body 21 through the switching port 31 and pulls out the first plug 40 from the joint body 21. Next, as shown in FIG. 8, the operator inserts the sewage switching state from the first state S1 to the second state S2 by inserting the second plug 50 through the switching port 31 and into the space 30 of the joint body 21. change. Thereafter, the lid body 23 is screwed into the switching port 31. Thus, in the exchange work, the worker can switch the flow path of the sewage without using a tool or the like. In this embodiment, the flow path of sewage can be switched without performing piping work. Here, the piping work refers to a work of connecting or removing the joint to the pipe using a tool or the like. In the disaster mode, as shown in FIG. 8, the second inflow communication port 55 of the second plug 50 communicates with the inflow port 32 of the joint 20, and the second outflow communication port 56 and the second outflow port 34 of the joint 20 are communicated. And the first outlet 33 is closed. In the joint 20, the lid body 23 is fitted to the switching port 31, and the second plug 50 is pressed against the second outlet 34 side by the lid body 23, so that the joint body 21 is crimped. is there.

  In the disaster mode, as shown in FIG. 1, the sewage discharged from the sewage facility 7 flows into the joint body 21 from the inlet 32 of the joint 20 after flowing into the first outflow pipe 11. As shown in FIG. 8, the sewage flowing into the joint body 21 passes through the second invert 57 of the second plug 50 and flows out of the joint body 21 from the second outlet 34. The sewage flowing out from the second outlet 34 flows through the sub outflow pipe 60 and is discharged to the storage tank 70 through the sewage port 71.

  As described above, in the present embodiment, the operator switches the switching plug 22 from the first state S1 to the second state S2 through the switching port 31, or switches the switching plug 22 from the second state S2 to the first state S1. By switching to, the flow path of the sewage can be switched. Therefore, the flow path of sewage can be switched without performing the piping work of reconnecting the joint to the pipeline. Further, the operator can switch the sewage flow path by operating the switching plug 22 while checking the inside of the joint body 21. Therefore, it is easy to switch the sewage flow path. In the present embodiment, when the solid body is clogged in the joint body 21, the operator can remove the solid body in the joint body 21 through the switching port 31. Therefore, since the fixed object in the joint main body 21 can be removed without performing piping work, maintenance is easy.

  In the present embodiment, as shown in FIG. 6, the first plug 40 is inserted into the space 30 of the joint body 21 to change the state of the switching plug 22 to the first inlet 33 and the first outlet 33. By setting the state S1, the sewage discharged from the sewage facility 7 can be discharged to the sewage main pipe 8. Moreover, as shown in FIG. 8, the 2nd plug 50 is inserted in the space 30 of the coupling main body 21, and the state of the switching plug 22 is made into the 2nd state S2 which connects the inflow port 32 and the 2nd outflow port 34. As shown in FIG. By doing, the sewage discharged | emitted from the sewage installation 7 can be discharged | emitted to the storage tank 70. FIG. Therefore, by switching the state of the switching plug 22, it is possible to select whether the sewage discharged from the sewage facility 7 is to be the sewage main 8 or the storage tank 70.

  Moreover, in this embodiment, in this embodiment, the flow path of sewage can be easily made by a simple procedure of whether the plug inserted into the space 30 of the joint body 21 is the first plug 40 or the second plug 50. Can be switched.

  In the present embodiment, depending on the amount and speed of the sewage flowing into the joint 20, any of the first plug 40 and the second plug 50 disposed in the space 30 of the joint body 21 due to the sewage hitting the joint 20. There is a possibility that the position of the plug and the joint body 21 may be shifted. However, in the present embodiment, as shown in FIG. 6, when the first plug 40 is inserted into the space 30 of the joint body 21, the first plug 40 is inserted into the second outflow tubular portion 21 c of the joint body 21. The first plug 40 is pressed against the second outlet 34 side by the lid 23 so that the first fitting portion 42 is fitted. Therefore, the first plug 40 can be crimped to the joint body 21. As shown in FIG. 8, when the second plug 50 is inserted into the space 30 of the joint body 21, the second fitting portion of the second plug 50 is inserted into the second outflow cylindrical portion 21 c of the joint body 21. The second plug 50 is pressed against the second outlet 34 side by the lid 23 so that 52 is fitted. Therefore, the second plug 50 can be crimped to the joint body 21. Thus, since the 1st plug 40 and the 2nd plug 50 are crimped | bonded to the joint main body 21 when arrange | positioning in the joint main body 21, even if dirty water collides, a position shifts | deviates with respect to the joint main body 21. Can be difficult.

  In the present embodiment, a male screw 23 a is formed on the side surface of the lid body 23. The switching port 31 is formed with a female screw 31a that is screwed with the male screw 23a. Accordingly, the first plug 40 or the second plug 50 is connected to the second outlet by attaching the lid body 23 to the switching port 31 while the male screw 23a of the lid body 23 and the female screw 31a of the switching port 31 are screwed together. It can be pressed to the 34 side. Therefore, the first plug 40 or the second plug 50 can be pressure-bonded to the joint body 21 by screwing the male screw 23a of the lid body 23 with the female screw 31a of the switching port 31.

  In the present embodiment, as shown in FIG. 6, the lid body 23 is attached to the switching port 31 so that the first projecting portion 48 of the first plug 40 and the contact portion 25 of the lid body 23 are in contact with each other. The first protruding portion 48 is pressed against the second outlet 34 side by the contact portion 25, and the first plug 40 can be crimped to the joint body 21. As shown in FIG. 8, by attaching the lid body 23 to the switching port 31 so that the second projecting portion 58 of the second plug 50 and the contact portion 25 are in contact with each other, the second projecting portion 58 is moved by the contact portion 25. The second plug 50 can be pressed against the joint body 21 by being pressed against the second outlet 34 side.

  In the present embodiment, as shown in FIG. 6, a first seal member 49 a is provided between the first fitting portion 42 of the first plug 40 and the second outflow cylindrical portion 21 c of the joint body 21. Yes. The first seal member 49a improves the sealing performance between the first fitting portion 42 of the first plug 40 and the second outflow cylindrical portion 21c of the joint body 21. Therefore, when the 1st plug 40 is arrange | positioned in the space 30 of the coupling main body 21, dirty water can be made difficult to leak from between the 1st fitting part 42 and the 2nd outflow cylindrical part 21c. In the present embodiment, as shown in FIG. 8, a second seal member 59a is provided between the second fitting portion 52 of the second plug 50 and the second outflow cylindrical portion 21c. The sealing performance between the second fitting portion 52 and the second outflow cylindrical portion 21c is improved by the second seal member 59a. Therefore, when the 2nd plug 50 is inserted in the space 30 of the coupling main body 21, sewage can be made difficult to leak from between the 2nd fitting part 52 and the 2nd outflow cylindrical part 21c.

  In the present embodiment, as shown in FIG. 6, a third seal member 49 b is provided between the first flange 43 of the first plug 40 and the facing surface 37 of the joint body 21. The sealing performance between the first flange 43 of the first plug 40 and the facing surface 37 of the joint body 21 is improved by the third seal member 49b. Therefore, when the first plug 40 is inserted into the space 30 of the joint body 21, it is possible to make it difficult for sewage to leak from between the first flange 43 and the facing surface 37. In the present embodiment, as shown in FIG. 8, a fourth seal member 59 b is provided between the second flange 53 of the second plug 50 and the facing surface 37 of the joint body 21. The sealing performance between the second flange 53 of the second plug 50 and the facing surface 37 of the joint body 21 is improved by the fourth seal member 59b. Therefore, when the second plug 50 is inserted into the space 30 of the joint body 21, it is possible to make it difficult for sewage to leak from between the second flange 53 and the facing surface 37.

  In the present embodiment, the opening area of the switching port 31 is larger than the opening areas of the inflow port 32, the first outflow port 33, and the second outflow port 34. As a result, when the solid body is clogged in the joint body 21, the operator can easily find the solid body in the joint body 21 through the switching port 31. Since the worker can easily remove the solid matter in the joint main body 21 through the switching port 31, the maintenance is easier.

  As shown in FIG. 1, the joint 20 is arranged near the top surface in the pit 5b. If the switching port 31 of the joint 20 is opened upward, the space above the switching port 31 is narrow, so that the operator operates the switching plug 22 through the switching port 31 and opens the sewage flow path. It becomes difficult to switch. In the present embodiment, the switching port 31 opens toward the side. Therefore, even if the joint 20 is disposed near the top surface, the sewage flow path can be easily switched through the switching port 31. In addition, since the joint 20 is arranged near the top surface in the pit 5b, the position of the sewage port 71 of the storage tank 70 connected to the second outlet 34 of the joint 20 is matched to the position of the joint 20 on the ground. The storage tank 70 can be disposed in the ground so as to be in a position close to. Therefore, the storage tank 70 may not be disposed at a relatively deep position in the ground.

  Heretofore, the sewage discharge system 100 including the joint 20 according to the first embodiment has been described. Next, the joint 120 according to the second embodiment will be described. In the following description, the same reference numerals are used for the same configurations as those already described, and description thereof will be omitted as appropriate.

Second Embodiment
FIG. 11 is a plan sectional view of the joint 120 according to the second embodiment, in which the switching plug 122 is disposed at the position of the first state S1. FIG. 12 is a view corresponding to FIG. 11 in which the switching plug 122 is disposed at the position of the second state S2. FIG. 13 is a plan sectional view of the switching plug 122.

  Although not shown, the joint 120 is disposed in the pit 5b (see FIG. 1) of the building 5. As shown in FIG. 11, the joint 120 includes a joint body 121, a switching plug 122, and a lid 123. The joint body 121 has a space 130 inside. In the joint body 121, a switching port 131, an inflow port 132, a first outflow port 133, and a second outflow port 134 are formed. The switching port 131 is formed in the side part of the coupling main body 121, and is opened toward the side.

  The joint main body 121 includes an inflow tubular portion 121a and a first outflow tubular portion 121b that face each other and extend sideways, and a second outflow tubular portion 121c that faces the switching port 131 and extends laterally. I have. The inflow port 132 is formed in the inflow cylindrical part 121 a and is connected to the first pipe part 11 b of the first outflow pipe 11. The first outlet 133 is formed in the first outflow cylindrical part 121 b and is connected to the third pipe part 12 a of the second outflow pipe 12. The inflow port 132 and the first outflow port 133 are opposed to each other. The 2nd outflow port 134 is formed in the 2nd outflow cylindrical part 121c, and is connected to the storage tank 70 (refer FIG. 1) via the sub outflow pipeline 60. As shown in FIG. The second outlet 134 and the switching port 131 are opposed to each other. In the present embodiment, the opening area of the switching port 131 is larger than the opening area of the inflow port 132, larger than the opening area of the first outflow port 133, and larger than the opening area of the second outflow port 134. In the present embodiment, a facing surface 137 similar to the facing surface 37 of the first embodiment is provided at a portion of the joint body 121 on the switching port 131 side.

  The switching plug 122 is constituted by one member, and by changing the position with respect to the joint main body 121, the first state S1 (see FIG. 11) in which the inlet 132 and the first outlet 133 are communicated with each other, It is possible to switch to the second state S2 (see FIG. 12) in which the inflow port 132 and the second outflow port 134 are communicated. As illustrated in FIG. 13, the switching plug 122 includes a plug main body 161, a fitting portion 162, and a flange 163.

  In the following description regarding the switching plug 122, the switching plug 122 is in a state of being inserted into the space 130 of the joint body 121. The plug main body 161 has a space inside. In the present embodiment, as shown in FIG. 11, the plug body 161 has a first body portion 161a and a second body portion 161b provided on the second outlet 134 side of the first body portion 161a. . Here, a first inflow communication port 145, a first outflow communication port 146, a first invert 147, a second inflow communication port 155, a second outflow communication port 156, and a second invert 157 are formed in the plug body 161. Yes.

  The first inflow communication port 145, the first outflow communication port 146, and the first invert 147 are formed in the first main body portion 161 a of the plug main body 161. The first inflow communication port 145 and the first outflow communication port 146 are formed in the first main body portion 161a so as to face each other, and open to the side. As shown in FIG. 11, when the switching plug 122 is disposed at the position of the first state S1, the first inflow communication port 145 communicates with the inflow port 132, and the first outflow communication port 146 has the first outflow port. 133 communicates. The first invert 147 is provided inside the first main body portion 161 a and connects the first inflow communication port 145 and the first outflow communication port 146.

  The second inflow communication port 155, the second outflow communication port 156, and the second invert 157 are formed in the second main body portion 161 b of the plug main body 161. The 2nd inflow communication port 155 and the 2nd outflow communication port 156 are formed in the 2nd main-body part 161b, and are opened toward the side. Here, the second inflow communication port 155 and the second outflow communication port 156 do not face each other, and the central axis of the second inflow communication port 155 and the central axis of the second outflow communication port 156 are orthogonal to each other. The second inflow communication port 155 is formed in a portion of the plug body 161 on the side where the first inflow communication port 145 is formed, and is arranged side by side with the first inflow communication port 145. The 2nd outflow communication port 156 is formed in the site | part by the side of the 2nd outflow port 134 of the 2nd main-body part 161b. As shown in FIG. 12, when the switching plug 122 is disposed at the position of the second state S2, the second inflow communication port 155 communicates with the inflow port 132, and the second outflow communication port 156 serves as the second outflow port. Communicate with 134. The second invert 157 is provided inside the second main body portion 161 b and connects the second inflow communication port 155 and the second outflow communication port 156.

  In the present embodiment, as shown in FIG. 11, the fitting portion 162 is fitted to the second outflow cylindrical portion 121c, and is provided at a site on the second outlet 134 side of the second main body portion 161b. ing. The fitting portion 162 protrudes from the second main body portion 161b toward the second outlet port 134. A second outflow communication port 156 is formed in the fitting portion 162. The flange 163 is a surface that faces the facing surface 137 of the joint body 121 when the switching plug 122 is disposed at the position of the first state S1. The flange 163 extends outward from the end of the first main body 161a on the switching port 131 side. Here, a rod-like projecting portion 164 projecting from the first main body portion 161a toward the switching port 131 is provided at a portion on the switching port 131 side of the first main body portion 161a. The protrusion 164 contacts the lid 123 when the switching plug 122 is disposed at the position of the first state S1.

  In the present embodiment, a ring-shaped and rubber seal member 166a is provided on the outer peripheral surface of the fitting portion 162 on the second outlet 134 side. The seal member 166a is disposed between the second outflow tubular portion 121c of the joint body 121 and the fitting portion 162 when the switching plug 122 is disposed at the position of the first state S1 or the second state S2. Is done. In the present embodiment, another ring-shaped and rubber seal member 166b is provided on the outer peripheral surface of the plug body 161 between the first invert 147 and the second invert 157. As shown in FIG. 11, the other seal member 166b is provided between the second outflow tubular portion 121c of the joint body 121 and the plug body 161 when the switching plug 122 is disposed at the position of the first state S1. Placed in. Also, as shown in FIG. 12, the other seal member 166b includes the inner peripheral surface of the joint body 121 on the switching port 131 side and the plug body 161 when the switching plug 122 is disposed at the position of the second state S2. Between. Although illustration is omitted, when the switching plug 122 is disposed in the position of the first state S1, the third seal of the first embodiment is provided between the flange 163 and the facing surface 137 of the joint body 121. A seal member similar to the member 49b or the fourth seal member 59b may be provided.

  In addition, since the cover body 123 which concerns on this embodiment has the same structure as the cover body 23 which concerns on 1st Embodiment, detailed description here is abbreviate | omitted. As shown in FIG. 11, the lid 123 according to the present embodiment is attached to the switching port 131 when the switching plug 122 is in the first state S <b> 1, and presses the switching plug 122 to the joint body 121. As shown in FIG. 12, when the switching plug 122 is in the second state S <b> 2, the lid 123 is removed from the switching port 131.

  Next, a method for using the joint 120 will be briefly described. In the normal mode, as shown in FIG. 11, the switching plug 122 is disposed at the position of the first state S1. In the normal mode, the first inflow communication port 145 and the inflow port 132 of the switching plug 122 communicate with each other, the first outflow communication port 146 and the first outflow port 133 communicate with each other, and the second outflow port 134 is closed. It is in a state. At this time, the first main body portion 161a of the plug main body 161 is disposed between the inflow port 132 and the first outflow port 133, and the entire second main body portion 161b is fitted to the second outflow cylindrical portion 121c. It is in a state. In the normal mode, the lid 123 is attached to the switching port 131, and the switching plug 122 is pressed against the joint body 121 by being pressed against the second outlet 134 by the lid 123. .

  In the disaster mode, the position of the switching plug 122 is changed. First, the lid 123 is removed from the switching port 131. Then, the operator inserts a hand into the space 130 of the joint body 121 from the switching port 131, pulls the switching plug 122 toward the switching port 131, and moves the switching plug 122 in the second state S2 as shown in FIG. Place in position. In the disaster mode, the second inflow communication port 155 and the inflow port 132 of the switching plug 122 communicate with each other, the second outflow communication port 156 and the second outflow port 134 communicate with each other, and the first outflow port 133 is closed. It is in a state. At this time, the first main body portion 161a of the plug main body 161 is disposed in the joint main body 121 on the switching port 131 side so that a part thereof is exposed to the outside. The second main body portion 161b is disposed between the inflow port 132 and the first outflow port 133. In the disaster mode, the joint 120 is used with the lid 123 removed from the switching port 131. In the disaster mode, the sealing surface of the inner peripheral surface of the joint main body 121 on the switching port 131 side and the plug main body 161 is improved by another sealing member 166b, so that sewage hardly leaks from the switching port 131. .

  Even in the present embodiment, the same effect as in the first embodiment can be obtained. In the present embodiment, the flow path of the sewage can be switched by changing the position of the switching plug 122 with respect to the joint body 121. Therefore, the flow path of sewage can be switched without performing the piping work of reconnecting the joint to the pipeline. Even in the present embodiment, when the solid body is clogged in the joint body 121, the operator can remove the solid body in the joint body 121 through the switching port 131. Therefore, since the fixed object in the joint main body 121 can be removed without performing piping work, maintenance is easy.

  In each of the above embodiments, the lid 23 press-fits the first plug 40 or the second plug 50 to the joint body 21 by screwing the male screw 23a of the lid 23 and the female screw 31a of the switching port 31. . However, the structure in which the first plug 40 or the second plug 50 is crimped to the joint body 21 is not particularly limited. For example, a spring that biases an elastic force to the first plug 40 or the second plug 50 may be provided between the lid body 23 and the first plug 40 or the second plug 50. With this spring, the first plug 40 or the second plug 50 is pressed against the second outlet 34 side, and the first plug 40 or the second plug 50 can be pressed against the joint body 21. For example, the lid body 23 may be attached to the switching port 31 by being fastened to the switching port 31 with a bolt. By tightening the bolt, the first plug 40 or the second plug 50 is pressed against the second outlet 34 side, and the first plug 40 or the second plug 50 can be crimped to the joint body 21.

  In the first embodiment, the joint 20 includes the lid body 23, and the lid body 23 is separate from the first plug 40 and the second plug 50. However, the lid body 23 may be provided on the first plug 40. The lid body 23 may be provided on the second plug 50. For example, there may be two lids 23, and the first plug 40 and one lid 23 may be integrally formed, or the second plug 50 and another lid 23 may be integrally formed. May be.

  In each of the above embodiments, sewage flows through the joint 20, and the joint 20 can switch the sewage flow path. However, the joint according to the present invention can switch the flow path of the drainage. Here, the drainage includes dirty water and rainwater. Rainwater is water resulting from natural phenomena such as rainfall, and can be discharged into a river as it is. Therefore, rainwater may flow through the joint 20. The joint 20 may be capable of switching the rainwater flow path.

7 Sewage equipment 11 1st outflow pipe 11a 1st pipe part 11b 2nd pipe part 12 2nd outflow pipe 12a 3rd pipe part 12b 4th pipe part 20 Joint 21 Joint main body 21c 2nd outflow cylindrical shape Part (cylindrical part)
22 switching plug 30 space 31 switching port 32 inflow port 33 first outflow port 34 second outflow port 40 first plug 50 second plug 70 storage tank 100 sewage discharge system

Claims (9)

A joint body having a space in which an inflow port into which drainage flows, a first outflow port and a second outflow port from which drainage flows out, and a switching port are formed;
A first state that can be inserted into the space of the joint body from the switching port, and in which the inflow port and the first outflow port are communicated so that drainage does not flow from the inflow port to the second outflow port; One or two switching plugs that can be switched to a second state in which the inflow port and the second outflow port are communicated so that drainage does not flow from the inflow port to the first outflow port;
With fittings. As the switching plug,
A first plug inserted into the space of the joint body in the first state;
A second plug inserted into the space of the joint body in the second state;
With
The first plug connects a first inflow communication port communicating with the inflow port, a first outflow communication port communicating with the first outflow port, and the first inflow communication port and the first outflow communication port. Having a first plug body formed with a first invert;
The second plug connects the second inflow communication port communicating with the inflow port, the second outflow communication port communicating with the second outflow port, and the second inflow communication port and the second outflow communication port. The joint of claim 1, comprising a second plug body formed with a second invert. A detachable lid is provided at the switching port,
The joint body includes a cylindrical portion in which the second outlet is formed at a position facing the switching port,
The first plug includes a first fitting portion that can be fitted into the cylindrical portion,
The second plug includes a second fitting portion that can be fitted to the cylindrical portion,
When the first plug is inserted into the space of the joint body, the lid is configured so that the first fitting portion is fitted into the tubular portion, and the first plug is inserted into the second portion. When the second plug is pressed against the outlet side and the second plug is disposed in the space of the joint body, the second plug is fitted so that the second fitting portion is fitted to the tubular portion. The joint according to claim 2, wherein the joint is configured to press against the second outlet side. On the side of the lid, a male screw is formed,
The joint according to claim 3, wherein a female screw that is screwed with the male screw is formed in the switching port. The first plug includes a first protrusion extending from the first plug body toward the lid when inserted into the space of the joint body,
When the second plug is inserted into the space of the joint body, the second plug includes a second protrusion extending from the second plug body toward the lid,
When the first plug is inserted into the space of the joint body, the lid contacts the first protrusion, and the second plug is inserted into the space of the joint body. The joint according to claim 3 or 4, further comprising a contact portion that comes into contact with the second protrusion. A first seal member is provided on the outer peripheral surface of the first fitting portion,
The joint according to any one of claims 3 to 5, wherein a second seal member is provided on an outer peripheral surface of the second fitting portion. The first plug includes a first flange extending outward from a portion on the switching port side in the first plug body in a state of being inserted into the space of the joint body,
The second plug includes a second flange extending outward from a portion of the second plug body on the switching port side in a state of being inserted into the space of the joint body.
The joint body has a facing surface that faces the first flange when the first plug is inserted into the space and faces the second flange when the second plug is inserted into the space. Provided,
A third seal member is provided on the surface on the opposite surface side of the first flange,
The joint according to any one of claims 3 to 6, wherein a fourth seal member is provided on a surface on the opposite surface side of the second flange.   The joint area according to any one of claims 1 to 7, wherein an opening area of the switching port is larger than respective opening areas of the inlet, the first outlet, and the second outlet. A joint according to any one of claims 1 to 8;
A first pipeline connected to the sewage system, and a second pipeline arranged downstream from the first pipeline and extending horizontally and connected to the inlet of the joint. 1 outflow line,
Downstream of the first outflow pipe line, connected to the first outlet of the joint, the third pipe part extending horizontally, and arranged downstream of the third pipe part, A second outflow conduit having a fourth conduit connected to the sewage main,
A storage tank connected to the second outlet of the joint and capable of storing sewage;
With
The joint is a sewage discharge system disposed in a pit provided under the floor of a building.

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