JP5926308B2 - Siphon drainage fittings - Google Patents

Description

  The present invention relates to a joint for a siphon drainage system used in a siphon drainage system that drains using siphon force.

  In recent years, siphon drainage systems that can replace conventional gradient drainage systems have been proposed. The siphon drainage system includes a watering device and a siphon drainage pipe.

  The siphon drain pipe is composed of a horizontal pull pipe that is piped along the floor slab with no gradient, and a vertical pipe that forms a hanging part. The horizontal pulling pipe and the dredging pipe have a feature that the drainage introduction pipe leads to the drainage standpipe through one route without joining with other drainage pipes. According to the siphon drainage system configured as described above, it is possible to improve drainage efficiency from the watering device by using siphon force (negative pressure) generated in the soot pipe.

  By the way, the siphon drain pipe in the siphon drain system has a feature that the diameter is smaller than that of the conventional pipe. Therefore, when the siphon drain pipe is washed, there is a case where inconvenience may occur if the siphon drain pipe is washed by the same method as the conventional drainage system. For example, when cleaning the inside of a pipe using a cleaning hose of a rear injection type nozzle, since the pipe diameter of the conventional drain pipe is about 50A or more, there is a sufficient gap between the cleaning hose and the inner wall of the pipe. The cleaning water sprayed backward from the cleaning hose (opposite to the direction in which the insertion proceeds) is sprayed to the front side of the nozzle portion of the cleaning hose and then flows toward the back (opposite to the insertion port) ( Patent Document 1).

JP 2004-116137 A

  However, in the siphon drainage pipe, the gap between the cleaning hose and the inner wall of the pipe is narrow, and much of the cleaning water sprayed backward from the cleaning hose flows to the insertion port side of the cleaning hose and overflows from the insertion port. There is.

  In consideration of the above-mentioned fact, the present invention provides a joint for a siphon drainage system that can be used in a siphon drainage system and can suppress overflow of wash water from the insertion port side of the washing hose when washing the siphon drainage pipe. The purpose is to do.

A joint for siphon drainage system according to claim 1 of the present invention is a joint for siphon drainage system used at the downstream end of a soot pipe in a siphon drainage system, and a main body portion having a hollow portion therein, An inflow connecting portion that is connected to the downstream end of the soot tube on the upstream end side to communicate the soot tube and the hollow portion, and allows the drainage from the soot tube to flow into the main body portion, and the downstream end of the main body portion An outflow connecting portion that is provided on the side and discharges the wastewater from the main body portion toward the discharge portion for discharging the wastewater from the dredger pipe, and a position that is not opposed to the traveling direction of the wastewater flowing in from the dredge pipe An insertion portion that allows a cleaning hose to be inserted into the main body portion, and a tapered portion that is provided on the hollow portion side of the inflow connecting portion and has a diameter that decreases from the inside to the outside of the main body portion. .

In order to perform cleaning with the cleaning hose using the siphon drainage system joint having the above-described configuration, first, the tip of the cleaning hose is inserted from the insertion portion , and further inserted from the main body portion through the outflow connection portion into the soot pipe. Then, the cleaning water is sprayed from the tip of the cleaning hose to clean the siphon drain pipe. Then, the washing water flowing toward the downstream side of the soot pipe flows into the main body through the inflow connecting portion, and flows out to the discharge portion through the outflow connecting portion.

According to the present invention, since the cleaning water sprayed from the cleaning hose goes to the drainage stack through the main body, it is possible to prevent the cleaning water from overflowing from the insertion portion side. Moreover, since the siphon drain pipe does not merge with other pipes between the downstream end of the dredger pipe and the watering device, the washing hose can be easily inserted from the downstream side toward the upstream side. Furthermore, by forming the tapered portion in the inflow connecting portion, the tip of the cleaning hose inserted into the main body portion from the inserting portion can be easily inserted into the inflow connecting portion.

A joint for siphon drainage system according to claim 2 of the present invention is characterized in that the joint for siphon drainage system includes a closing member capable of closing the insertion portion, and is always installed in the siphon drainage system.

Thus, the closing member can be provided to prevent the drainage of the insertion portion from flowing out, and the siphon drainage system joint can be always installed in the siphon drainage system.

The joint for siphon drainage system according to claim 3 of the present invention is characterized in that the outflow connecting portion is connectable to a joint for connecting drainage stacks to each other .

  In this way, by allowing the outflow connection part to be connected to the soot pipe connection part, when cleaning the siphon drainage pipe, the soot pipes are removed from the soot pipe connection part one by one and connected to the siphon drainage system joint. At the same time, cleaning can be performed by connecting the outflow connection portion of the siphon drainage system joint to the soot tube connection portion.

In the siphon drainage system joint according to claim 4 of the present invention, the main body portion has a cylindrical shape, the inflow connection portion is provided on one end side of the tube, and the outflow connection portion is provided on the other end side of the tube. The insertion portion is formed on a side portion of the cylinder.

In the above configuration, since the outflow connection portion is provided in the traveling direction of the wash water flowing in from the inflow connection portion, the wash water can be smoothly discharged to the discharge portion. Moreover, since the insertion portion is configured with an angle of 90 degrees with the traveling direction of the cleaning water flowing in from the inflow connecting portion, it is possible to suppress the outflow of cleaning water from the insertion portion .

The siphon drainage system joint according to claim 5 of the present invention is characterized in that the insertion portion is provided with a rotating member that is rotatable while being in contact with the outer surface of the cleaning hose.

  As described above, by providing the rotating member, the cleaning hose can be smoothly sent out or drawn.

  The joint for siphon drainage system according to claim 6 of the present invention is characterized in that the main body is transparent.

Thus, by making the main body transparent, the inside can be seen, and the cleaning hose can be easily inserted and operated.
In the joint for siphon drainage system according to claim 7 of the present invention, the hollow portion side of the insertion portion has a tapered shape with a smaller diameter from the inner side to the outer side of the main body portion.
In the siphon drainage system joint according to claim 8 of the present invention, a stepped portion with which the tip of the soot tube contacts is formed on the side of the soot tube from the taper portion of the inflow connecting portion, and the taper portion The inner diameter of the end portion on the side of the soot tube is the same as the inside diameter of the soot tube.

Since this invention set it as the said structure, when wash | cleaning a siphon drain pipe, it can suppress the overflow of the washing water from the insertion part side of a washing hose.

It is the schematic which shows the whole structure of the siphon drainage system which concerns on 1st Embodiment. It is the perspective view which showed the connection of the storage tank and piping of the siphon drainage system which concerns on 1st Embodiment. It is the schematic which shows the state by which the outer side of a storage tank is covered with the soundproof sheet. It is sectional drawing of the coupling for siphon drainage systems (at the time of non-cleaning) concerning a 1st embodiment. It is the schematic of the washing hose of the siphon drain pipe which concerns on 1st Embodiment. It is sectional drawing of the coupling for siphon drainage systems (at the time of non-cleaning) concerning a 1st embodiment. It is sectional drawing of the modification (at the time of washing | cleaning) of the coupling for siphon drainage systems concerning a 1st embodiment. (A) is sectional drawing of the modification (at the time of non-washing) of the coupling for siphon drainage systems concerning a 1st embodiment, and (B) is the schematic which looked at the opening neighborhood (at the time of closing) from the opening side. (A) is sectional drawing of the modification (at the time of washing | cleaning) of the coupling for siphon drainage systems which concerns on 1st Embodiment, (B) is the schematic which looked at opening vicinity (at the time of opening) from the opening side, (C ) Is a schematic view of the vicinity of the opening (during cleaning) viewed from the opening side. It is sectional drawing of the modification (at the time of non-washing) of the coupling for siphon drainage systems concerning a 1st embodiment. It is sectional drawing of the modification (at the time of washing | cleaning) of the coupling for siphon drainage systems concerning a 1st embodiment. It is sectional drawing of the other modification (at the time of non-washing) of the joint for siphon drainage systems concerning a 1st embodiment. It is a top view of the inflow connection lid | cover of the coupling for siphon drainage systems of FIG. It is the whole siphon drainage system lineblock diagram using other modifications of the joint for siphon drainage systems concerning a 1st embodiment. It is sectional drawing of the coupling for siphon drainage systems (at the time of non-cleaning) of FIG. It is the schematic which shows the whole structure of the siphon drainage system which concerns on 2nd Embodiment. It is the schematic which shows the structure of the coupling for washing | cleaning which concerns on 2nd Embodiment. It is the schematic explanatory drawing which showed the other form as a washing | cleaning form of a siphon drainage system. It is the schematic explanatory drawing which showed the other form as a washing | cleaning form of a siphon drainage system. It is the schematic explanatory drawing which showed the other form as a washing | cleaning form of a siphon drainage system.

[First Embodiment]
A first embodiment according to the present invention will be described below with reference to the drawings.

(Configuration of siphon drainage system)
First, the configuration of the siphon drainage system in which the siphon drainage system joint 60 according to the present invention is used will be described. FIG. 1 is a schematic diagram showing the overall configuration of a temporary storage tank type siphon drainage system. Although this embodiment demonstrates using the siphon drainage system of a temporary storage tank system, this invention can be used also for the siphon drainage system of a non-temporary storage tank system in which a storage tank is not installed.

  The siphon drainage system 10 of this embodiment is a drainage system that efficiently drains drainage from a watering device using siphon force. In the present embodiment, an example in which the siphon drainage system is used in an apartment house composed of a plurality of floors will be described. The siphon drainage system is preferably used for an apartment house, but can also be used for a detached house or a factory other than the apartment house.

  As shown in FIG. 1, the siphon drainage system 10 according to the present embodiment includes a drainage stack 12 that allows drainage to flow downward. The drainage stack 12 extends in the vertical direction (longitudinal direction) of the apartment house, and penetrates the floor slab 14 on each floor of the apartment house. In addition, although this embodiment demonstrates the thing of the structure where a siphon drainage pipe joins to the drainage stack 12, it does not have the drainage stack 12, but the structure from which the waste water from a siphon drainage is discharged to another discharge part. It may be.

  Each door of each floor of the apartment house is provided with a plurality of watering devices 16 for draining. The watering device 16 includes, for example, a kitchen sink, a sink, a washing machine, a unit bath, and the like.

  One end of a drainage introduction pipe 18 through which drainage discharged from the plumbing fixture 16 flows is connected to the plumbing fixture 16. The other end of the drainage introduction pipe 18 is connected to the storage tank 50. The drainage introduction pipe 18 is disposed with a gradient so that the storage tank 50 side is lowered.

  The storage tank 50 is for temporarily storing drainage from the watering device 16. As shown in FIG. 2, a storage space 52 is configured inside the storage tank 50. The storage space 52 is partitioned into three individual storage portions 52A, 52B, and 52C by a partition member 54. The plurality of drainage introduction pipes 18A to 18C from the watering device 16 described above are respectively connected to the individual reservoirs 52A, 52B, and 52C. In addition, siphon drain pipes 22A, 22B, and 22C (collectively referred to as “siphon drain pipe 22”) are connected to the individual storage sections 52A, 52B, and 52C of the storage tank 50, respectively.

  In addition, the storage tank 50 may cover the outside with a soundproof sheet 50S as shown in FIG. 3 in consideration of the influence of sound in the storage tank 50 on the inside of the room during drainage.

As shown in FIG. 1, the siphon drain pipe 22 includes a horizontal pulling pipe 24 disposed along the floor slab 14, and a soot pipe 26 communicating with the horizontal pulling pipe 24. The horizontal pipe 24 communicates with the storage tank 50 and is disposed on the floor slab 14 with no gradient in the horizontal direction. In addition to siphon drainage systems, in all non-gradient drainage systems, it has been used to reliably install the specified gradient in the conventional drainage system on the non-gradient part (no-gradient part). A hard tube may not be used, a flexible tube is used in consideration of workability and cost, and an intermediate connection joint is generally not used. The soot pipe 26 communicating with the horizontal pulling pipe 24 is disposed in the vertical direction (vertical direction) along the drainage stack 12. The soot pipe 26 is connected to the junction joint 42 via the siphon drainage system joint 60, and the junction joint 42 is connected to the joint 40 that connects the drainage stacks 12 to each other.

  The horizontal pulling pipe 24 and the dredging pipe 26 are configured as drainage pipes having the same diameter, and the drainage pipe 12 is guided to the drainage stack 12 without joining to other drainage pipes up to the siphon drainage system joint 60. It has become. Further, the inner diameter of the horizontal pulling pipe 24 and the dredging pipe 26 is set so that the drainage flows in a full flow. A siphon force in the direction of drainage is applied to the drainage in the horizontal pipe 24 by the energy of the siphon head Hs.

  As shown in FIG. 4, the siphon drainage system joint 60 includes a main body portion 62, an inflow connection portion 64, an outflow connection portion 66, an insertion portion 68, and a closing member 70. The main body 62 has a substantially cylindrical shape, and the cylinder axis is arranged in the vertical direction. A hollow portion 60 </ b> A is configured in the cylinder of the main body portion 62. The main body 62 is provided with an inflow connecting portion 64 on the upstream end side of the cylinder, and an outflow connecting portion 66 on the downstream end side. An insertion portion 68 is formed on the side surface of the main body portion 62. In addition, it is preferable that the main-body part 62 is a transparent body. By configuring with a transparent body, it is possible to easily insert a cleaning hose 80 to be described later while looking inside.

  The inflow connecting portion 64 is composed of a plurality of holes communicating with the hollow portion 60A, and the plurality of soot tubes 26 can be inserted therein. A holding member 65 that holds the connection state with the soot tube 26 is provided outside each of the plurality of holes. The soot tube 26 can be attached to and detached from the inflow connecting portion 64 via a holding member 65. The holding member 65 may have an engaging portion that engages with the outer surface of the soot tube 26, and may hold the soot tube 26 by engagement. A screw may be cut to the inner periphery and the soot tube may be held by screwing. A step portion 60D is formed on the hollow connection portion 64A side of the inflow connecting portion 64, and the tip end portion of the soot tube 26 is brought into contact with the step portion 60D. A tapered portion 60T having a larger diameter toward the hollow portion 60A is integrally formed with the main body portion 62 on the hollow portion 60A side than the stepped portion 60D.

  The outflow connecting portion 66 is configured by an opening hole that can connect the junction joint 42 and communicate with the hollow portion 60A. A holding member 67 that holds the connection state with the junction joint 42 is provided outside the opening hole.

  The insertion portion 68 has a cylindrical shape that protrudes outward from the side surface of the main body portion 62, and has an opening 68 </ b> A that communicates with the hollow portion 60 </ b> A and can be inserted with a cleaning hose 80 to be described later. .

  The closing member 70 has a lid shape that covers the insertion portion 68 and is attached to the insertion portion 68 so that the opening 68A can be closed. The closing member 70 may be attached to the outside of the insertion portion 68 with a screw type, or may be attached by other engagement methods.

  As shown in FIG. 5, the cleaning hose 80 includes a hose body portion 82 and a nozzle portion 84. The nozzle portion 84 is configured with a nozzle 84N that jets the cleaning water backward to the insertion rear side.

  In addition to the rear-injection type, the cleaning hose includes a front-injection type that injects cleaning water forward from the nozzle and a hybrid front-and-rear-injection type that can inject both forward and backward. However, in this application, a backward injection type is used. In the siphon drainage system, the siphon drainage pipe has a small diameter and is difficult to pass through the front jet, so cleaning by the rear jet is suitable.

  Next, cleaning of the siphon drain pipe 22 in this embodiment will be described. When cleaning the siphon drain pipe 22 (the soot pipe 26 and the horizontal pull pipe 24), first, the closing member 70 of the siphon drain system joint 60 is removed from the insertion section 68, and the insertion section 68 is opened. Then, as shown in FIG. 6, the cleaning hose 80 is inserted into the opening 68A from the nozzle portion 84, and is inserted into the inflow connecting portion 64 and the soot tube 26 through the hollow portion 60A. Then, the nozzle portion 84 is moved to the upstream side while the cleaning water is jetted to clean the inside of the tub tube 26 and is also inserted into the horizontal pulling tube 24 for cleaning. Since the siphon drain pipe 22 is not joined with other pipes on the way, the cleaning hose 80 is not inserted into other branch pipes and can be smoothly sent upstream.

  The cleaning water sprayed from the nozzle portion 84 at the time of cleaning cleans dirt and the like adhering to the siphon drain pipe 22 and flows downstream with these dirt and flows into the hollow portion 60A from the inflow connecting portion 64. Then, the washing water flows to the outflow connection portion 66 disposed at a position facing the inflow connection portion 64, and flows out to the drainage stack 12 through the junction portion joint 42 and the joint 40.

  Since the siphon drain pipe 22 is smaller in diameter than the drain pipe of the conventional method, the cleaning water sprayed from the cleaning hose 80 (especially in the case of the rear injection type) is directed to the cleaning hose insertion side. In the embodiment, since the cleaning hose 80 is inserted from the downstream side of the siphon drain pipe 22, the cleaning water directed toward the insertion side can flow downstream. Moreover, since the insertion part 68 which inserts the washing hose 80 does not oppose the inflow direction to the hollow part 60A of washing water, the outflow of washing water from the insertion part 68 can be suppressed.

  Thus, by installing the siphon drainage system joint 60 of the present embodiment at the junction of the siphon drainage system 10 and inserting the cleaning hose 80 upstream from the insertion part 68 of the siphon drainage system joint 60, It is possible to easily wash the siphon drain pipe 22 while suppressing overflow from the washing water insertion portion 68.

  In the present embodiment, the tapered portion 60T is formed on the hollow portion 60A side of the inflow connecting portion 64, but the tapered portion 60T is not necessarily required. In particular, the nozzle portion 84 of the cleaning hose 80 can be easily inserted into the inflow connecting portion 64 by forming the tapered portion 60T.

  Further, as shown in FIG. 7, a roller pair 68 </ b> R that can be driven and rotated is attached to the inside of the insertion portion 68 of the siphon drainage system joint 60 of the present embodiment, and the outside of the cleaning hose 80 is held by the roller pair 68 </ b> R. It may be. Thus, by providing the roller pair 68 </ b> R, the cleaning hose 80 can be smoothly fed out and retracted. The same effect can be obtained by providing another rotating member, for example, a ball bearing, instead of the roller pair 68R.

  In the present embodiment, the opening 68A of the insertion portion 68 of the siphon drainage system joint 60 is closed by a removable closing member 70, but the opening 68A is closed by a shutter member 72 instead of the closing member 70. May be. In this case, as shown in FIGS. 8A and 9A, the opening 68A is configured without protruding from the main body 62 as an insertion portion. A pair of guide portions 74 (see FIG. 8B) are formed in parallel to each other along the vertical direction on both sides of the opening 68A of the main body 62, and the shutter member 72 can slide on the guide portions 74. Engage with. If the notch hole 72K for the cleaning hose 80 is provided on the lower side of the shutter member 72, when the shutter member 72 is disposed at the closed position P1, the notch hole 72K is disposed below the opening 68A and the opening 68A. Is closed. By disposing the shutter member 72 at the open position P2 and opening the opening 68A (see FIG. 9B), the cleaning hose 80 can be easily inserted and operated. Further, by disposing the shutter member 72 at the cleaning position P3 after the cleaning hose 80 is inserted (see FIG. 9C), most of the opening 68A is closed, and the outflow of cleaning water from the opening 68A is suppressed. Can do.

  Moreover, in this embodiment, although the junction joint 42 was arrange | positioned between the joint 60 for siphon drainage systems, and the joint 40, the outflow connection part of the joint 60 for siphon drainage systems, without arrange | positioning the junction joint 42. 66 may be directly connected to the joint 40.

  Further, as shown in FIGS. 10 and 11, an inflow connecting portion 44 to which the soot pipe 26 can be connected is formed at the upstream end of the joining portion joint 42 in which the hollow portion 42 </ b> A is configured. It is good also as a structure which provides the holding member 45 which hold | maintains a connection state with the soot pipe 26 on the outer side. Also in this case, the step portion 42D is formed on the hollow portion 42A side of the inflow connecting portion 44 so that the distal end portion of the soot tube 26 is brought into contact with the hollow portion 42A side of the hollow portion 42A than the step portion 42D. A tapered portion 42T having a large diameter toward the top is formed. In addition, the connecting portion with the joint 40 becomes an outflow connecting portion 46 for draining the drainage and cleaning water flowing into the hollow portion 42A. Then, the insertion hole 43 into which the cleaning hose 80 can be inserted is formed on the side surface of the junction joint 42, and the insertion hole 43 may be closed with the stopper 41 in normal times. The stopper 41 can be made of rubber or resin having excellent sealing properties.

  Moreover, in this embodiment, although the inflow connection part 64 of the coupling 60 for siphon drainage systems demonstrated the example comprised integrally with the main-body part 62, as shown in FIG. It is good also as opening shape and making an inflow connection part into the inflow connection cover 64F of another member. The inflow connecting lid 64F has a substantially disc shape, and includes a plurality of connecting holes 64H into which the tub tube 26 can be inserted (see FIG. 13), and the outer edge portion can be inserted outside the main body 62. It is a ridge. A step portion 64D with which the soot tube 26 abuts is formed below the connection hole 64H, and has a tapered shape having a large diameter from the step portion 64D toward the hollow portion 60A. The inflow connecting lid 64F is attached to the upper side of the main body 62, covers the opening of the main body 62, and the soot pipe 26 is inserted into the connecting hole 64H, so that it can be used as the siphon drainage system joint 60 of the present invention.

  Moreover, as shown in FIG. 14, the inflow connection part 64 of the joint 60 for siphon drainage systems can also be comprised so that it may be arrange | positioned at the upper side of the soot pipe 26. FIG. In this case, as shown also in FIG. 15, the main body 62 is formed long upward, and the upper end has an opening shape. Then, the opening is closed with an inflow connecting lid 64 </ b> F that is not configured of the stepped portion 64 </ b> D, and the soot tube 26 is inserted into the connecting hole 64 </ b> H so that the tip is disposed below the main body 62. According to this configuration, most of the soot pipe 26 is disposed inside the siphon drainage system joint 60, so that the soot pipe 26 can be protected.

  Further, in the present embodiment, an example in which the siphon drainage system joint 60 is always installed in the siphon drainage system has been described. The soot pipe 26 may be connected to the drainage stack 12. If not always installed, the siphon drainage system joint 60 does not require the closing member 70.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be described.

  As shown in FIG. 16, the siphon drainage system 11 of the present embodiment does not include the siphon drainage system joint 60 described in the first embodiment, and the soot pipe 26 and the drainage stack 12 are provided at the junction joint 42. It is connected. The plurality of soot pipes 26 are joined after being connected to the junction joint 42, and the junction joint 42 is connected to the drainage stack 12. In the present embodiment, the siphon drain pipe 22 is cleaned using the cleaning joint 90.

  As shown in FIG. 17, the cleaning joint 90 includes a main body portion 92, a soot tube connection portion 94, a hose insertion portion (hereinafter referred to as “insertion portion”) 96, and a merging connection portion 98.

  The main body portion 92 has a hollow portion 92 </ b> A formed therein, and a soot tube connecting portion 94, a hose insertion portion 96, and a merging connecting portion 98 are formed in the main body portion 92.

  The soot tube connecting portion 94 is disposed on the upper side of the main body portion 92 and has a cylindrical shape capable of extrapolating the soot tube 26. The inside of the soot tube connecting portion 94 communicates with the hollow portion 92A.

  The insertion portion 96 has a tubular shape that protrudes outward from the side surface of the main body 92 and is bent upward. The inside of the tube of the insertion portion 96 has a diameter that allows the cleaning hose 80 to be inserted while communicating with the hollow portion 92A.

  The junction connecting portion 98 has a tubular shape that protrudes outward from the side surface opposite to the insertion portion 96 of the main body portion 92, is bent upward, and then is folded downward in a U shape. The upper end of the U-shape is configured to be disposed at a position lower than the upper end of the insertion portion 96. The junction connecting portion 98 has a tip that can be connected to the soot tube connecting portion 42B of the junction joint 42, and the inside of the tube communicates with the hollow portion 92A. In addition, the junction connection part 98 can also be comprised using a flexible tube.

  Next, cleaning of the siphon drain pipe 22 in this embodiment will be described. When cleaning the siphon drain pipe 22 (the soot pipe 26 and the horizontal pulling pipe 24), first, the downstream end of the soot pipe 26 is removed from the junction joint 42 and then to the soot pipe connecting portion 94 of the cleaning joint 90. Link. Next, the cleaning hose 80 is inserted into the insertion portion 96 from the nozzle portion 84 and inserted into the soot tube connecting portion 94 and the soot tube 26 through the hollow portion 92A. Then, the nozzle portion 84 is moved to the upstream side while the cleaning water is jetted to clean the inside of the tub tube 26 and is also inserted into the horizontal pulling tube 24 for cleaning. Since the siphon drain pipe 22 is not joined with other pipes on the way, the cleaning hose 80 is not inserted into other branch pipes and can be smoothly sent upstream.

  The washing water sprayed from the nozzle part 84 at the time of washing flows downstream and flows into the hollow part 92A from the soot tube coupling part 94. Then, the washing water is directed to the merging connection part 98 and flows out to the drainage stack 12 through the merging part joint 42.

  Also in this embodiment, since the cleaning hose 80 is inserted from the downstream side of the siphon drain pipe 22, the cleaning water directed toward the insertion side of the cleaning hose can be made to flow downstream. In addition, the insertion portion 96 of the cleaning hose 80 is not opposed to the inflow direction of the cleaning water into the hollow portion 92 </ b> A, and is disposed at a position higher than the upper end of the junction connection portion 98. The outflow of water can be suppressed.

  Thus, by using the cleaning joint 90 of the present embodiment, the siphon drain pipe 22 can be easily cleaned without changing the existing siphon drain system.

[Other forms]
In the siphon drainage system, as described above, the gap between the cleaning hose and the inner wall of the pipe is narrow, and much of the cleaning water jetted backward from the cleaning hose flows to the insertion side of the cleaning hose and overflows from the insertion port. Have the problem of Therefore, in order to eliminate this overflow, the cleaning water returning to the insertion side of the cleaning hose may be sucked out using the pump 100P. In this case, as shown in FIG. 18, the cleaning hose 80 is inserted into the siphon drain pipe 22 from the storage tank 50 side, the cleaning water is sprayed backward from the nozzle 84N, and cleaning is performed. Wash water overflowing into the water can be sucked by the pump 100P and discharged to another container 102.

  Moreover, in the siphon drainage system which is not equipped with the storage tank 50, as shown in FIG. 19, the washing hose 80 is inserted into the siphon drainage pipe 22 from the bathtub 16Y as the watering device 16, and washing is performed by backward injection. At this time, the lid F is disposed in the opening portion of the bathtub 16Y to prevent the washing water from jumping out of the bathtub 16Y. Then, it can be sucked by the pump 100 </ b> P and discharged to another container 102.

  Alternatively, the siphon drain pipes 22 arranged in parallel may be connected to each other only at the time of cleaning, and the cleaning water for cleaning one siphon drain pipe 22 may be discharged to the other siphon drain pipe 22. In this case, as shown in FIG. 20, the two siphon drain pipes 22 can be connected to each other using an H-shaped cleaning coupling joint 110. At the time of cleaning, a cleaning hose 80 is inserted from the downstream end of the soot tube 26 to perform cleaning. Since a part of the cleaning water jetted backward flows out to the other siphon drain pipe 22, the overflow amount from the downstream end of the soot pipe 26 being cleaned can be reduced.

DESCRIPTION OF SYMBOLS 10 Siphon drainage system 12 Drainage standpipe 22 Siphon drainage pipe 24 Horizontal pulling pipe 26 Saddle pipe 44 Inflow connection part 46 Outflow connection part 60 Siphon drainage system joint 62 Main part 64 Inflow connection part 65 Holding member 66 Outflow connection part 80 Washing hose 90 Washing joint 92 Main body portion 94 Saddle pipe connecting portion 96 Hose insertion portion 98 Merge connecting portion

Claims (8)

A siphon drainage system joint used at the downstream end of a pipe in a siphon drainage system,
A main body with a hollow portion inside ,
An inflow connecting portion that is connected to the downstream end of the soot tube on the upstream end side of the main body portion, communicates the soot tube and the hollow portion, and allows drainage from the soot tube to flow into the main body portion,
An outflow connecting portion that is provided on the downstream end side of the main body portion and causes the drainage to flow out from the main body portion toward the discharge portion for discharging the wastewater from the culvert pipe;
An insertion portion that allows a cleaning hose to be inserted into the main body portion from a position that is non-opposing in the traveling direction of the wastewater flowing from the vertical pipe;
A tapered portion that is provided on the hollow portion side of the inflow connecting portion and has a diameter that decreases from the inside to the outside of the main body portion; and
Siphon drainage system fittings equipped with.   The joint for a siphon drainage system according to claim 1, further comprising a closing member capable of closing the insertion portion, and being always installed in the siphon drainage system. The joint for siphon drainage systems according to claim 1, wherein the outflow connection portion is connectable to a joint for connecting drainage stacks.   The main body portion has a cylindrical shape, the inflow connection portion is provided on one end side of the tube, the outflow connection portion is provided on the other end side of the tube, and the insertion portion is configured on the side portion of the cylinder. The joint for siphon drainage systems of any one of Claims 1-3 characterized by these.   The siphon drainage system according to any one of claims 1 to 4, wherein the insertion portion is provided with a rotating member that is rotatable while being in contact with an outer surface of the cleaning hose. Fittings.   The said main-body part is transparent, The coupling for siphon drainage systems of any one of Claims 1-5 characterized by the above-mentioned.   The joint for siphon drainage systems of any one of Claims 1-6 by which the said hollow part side of the said insertion part is made into the taper shape which becomes a small diameter toward the outer side from the inner side of the said main-body part.   A stepped portion is formed on the side of the soot tube from the tapered portion of the inflow connecting portion so that the tip of the soot tube abuts, and the inner diameter of the end portion of the tapered portion on the side of the soot tube The joint for siphon drainage systems of any one of Claims 1-7 made the same diameter as this.

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