JP6573480B2 - Drainage joint and drainage system - Google Patents

Description

  The present invention relates to a drainage joint and a drainage system.

  In recent years, a so-called siphon drainage system has been proposed as an alternative to the conventional gradient drainage system (see, for example, Patent Document 1). As described in Patent Document 1, the siphon drainage system uses a siphon force (negative pressure) generated in a vertical pipe that forms a hanging part of a siphon drain pipe by connecting a siphon drain pipe to a watering device. This is a system that improves the efficiency of drainage from watering equipment.

  In this siphon drainage system, the drainage discharged from the watering device flows into the siphon drainage pipe and fills the horizontal pulling pipe forming the horizontal part of the siphon drainage pipe and the dredging pipe forming the hanging part of the siphon drainage pipe. When the dredging pipe of the siphon drainage pipe is filled with drainage, the drainage in the dredging pipe falls due to gravity, and a suction force corresponding to the water head difference in the dredging pipe, that is, siphon force, is generated inside the horizontal pulling pipe. The drainage in the horizontal pulling pipe is sucked toward the soot pipe by the siphon force, and flows down in the siphon drainage pipe as a so-called full flow that fills the siphon drainage pipe with the drainage.

  As a structure for connecting a soot pipe that generates siphon force of a siphon drainage system to a standing pipe, there is a structure in which the soot pipe is connected via a so-called junction joint.

  The confluence joint is composed of a tubular main pipe part connected to the standing pipe and a tubular connection part protruding in the horizontal direction from the side part of the main pipe part. The overall shape of the confluence joint is substantially T-shaped, and the axis of the main pipe portion and the center of the connection portion intersect at a right angle.

  A drainage joint for connecting a soot pipe is connected to the connecting portion. This drainage joint has a cylindrical cylindrical part attached to the connection part of the confluence joint, a peripheral wall part whose peripheral wall inner surface is hemispherical continuous with the end of the cylindrical part, and a top part of the peripheral wall inner surface upward. And an open tube connecting portion communicating with the opening.

JP 2006-207190 A

  By the way, the junction joint is provided with a cleaning nozzle insertion port for cleaning the soot pipe on the side opposite to the drainage joint. A cleaning nozzle with an injection part attached to the tip of a flexible hose is inserted from the cleaning nozzle insertion port and inserted from the cylindrical part of the drainage joint to the back of the peripheral wall part. It is guided to the inner surface of the hemispherical peripheral wall and guided to the opening provided at the top of the peripheral wall. As a result, the tip of the cleaning nozzle enters the soot tube from the opening, and the soot tube can be cleaned.

  On the other hand, when the opening is formed in a portion that is not the top of the peripheral wall portion of the drainage joint, even if the tip of the cleaning nozzle reaches the top of the inner surface of the peripheral wall, it cannot enter the opening. Further, even if the cleaning nozzle is pushed further, the hose of the cleaning nozzle is folded back so that it cannot enter the opening. That is, the cleaning nozzle cannot be guided to the soot tube.

  Accordingly, there is a need for a drainage joint that can guide the cleaning nozzle to the soot pipe regardless of where the opening to which the soot pipe is connected is formed on the peripheral wall.

  In view of the above facts, the present invention has an object to provide a drainage joint capable of guiding a cleaning nozzle to a soot pipe.

The drainage joint according to claim 1 is connected to a side surface of a confluence joint provided in a vertical pipe disposed in a vertical direction of a building, and is continuous with the cylindrical inner surface extending in the horizontal direction and the cylindrical inner surface. A cylindrical portion provided with an inclined inner surface inclined toward the axial center side of the cylindrical inner surface toward an end portion on the opposite side to the merging joint; and provided at an end portion on the opposite side of the merging joint of the cylindrical portion, A rear wall portion that closes the tube portion, and a soot tube connecting portion that communicates with an opening portion that is open on the upper side of the sloped inner surface, and that is connected to a soot tube that allows drainage from a watering device to fall. the refraction portion at the boundary between the back wall inner surface of the inner wall portion is formed, at least a portion of the bent portion is extended toward the opening, the said tubular portion from the side opposite to the rear wall and A drainage passage that is open so that the cleaning nozzle can be inserted is formed .

  In the drainage joint according to the first aspect, the cylindrical portion is connected to the junction joint, and the soot pipe is connected to the soot pipe connecting portion. When drainage is discharged from the soot pipe, the drainage reaches the cylinder part (inclined inner surface and further cylindrical inner surface) from the soot pipe connection part through the opening, and flows into the vertical pipe through the junction joint.

Meanwhile, in order to clean the Tatekan inserts a cleaning nozzle injection unit is attached to the distal end of the hose from the opposite side of the inner wall portion of the cylindrical portion of the drainage fitting inside the drainage passage. The tip of the cleaning nozzle comes into contact with the lower side of the cylindrical inner surface of the cylinder part of the drainage joint by its own weight, and the tip of the cleaning nozzle is pushed back along the cylindrical inner surface of the cylinder part by pushing the hose from the cleaning nozzle insertion port. Proceed to (in the direction away from the joint). Further, by pushing the hose from the cleaning nozzle insertion port, the tip of the cleaning nozzle moves from the cylindrical inner surface along the inclined inner surface. When the tip of the cleaning nozzle reaches the refracting portion formed at the boundary between the inclined inner surface and the inner surface of the inner wall, the pushed hose bends and the tip of the cleaning nozzle faces in the direction along the refracting portion. Further, by pushing the hose, at least a part of the hose moves along the refracting portion extending toward the opening, and is guided to the opening opened on the inclined inner surface. In other words, the tip of the cleaning nozzle formed at the tip of the flexible hose can reach the soot tube from the opening through the soot tube connecting portion. Therefore, the cleaning nozzle can be guided to the soot pipe by inserting the cleaning nozzle into the drainage passage inside the cylindrical portion from the side opposite to the back wall side of the cylindrical portion of the drainage joint .

  A drainage joint according to a second aspect is the drainage joint according to the first aspect, wherein the refracting portion extends from a position below the axial center of the cylindrical portion to the height of the axial center of the cylindrical portion. Exists.

  In the drainage joint according to claim 2, the refracting portion is formed to extend from a position lower than the height of the axial center of the cylindrical portion at the boundary to the height of the axial center of the cylindrical portion. That is, since the refracting portion that guides the tip of the cleaning nozzle is provided at the portion where the tip of the cleaning nozzle comes into contact with the back wall portion and easily hits, the cleaning nozzle can be guided to the soot tube.

  A drainage joint according to a third aspect is the drainage joint according to the first or second aspect, wherein the refracting portion and the edge of the opening are in point contact.

  In the drainage joint according to the third aspect, the tip of the cleaning nozzle pushed into the interior moves along a refracting portion formed at the boundary between the inclined inner surface and the inner surface of the back wall. Since the edge of the opening of the refracting part and the pipe connecting part is in point contact, after moving along the refracting part, it smoothly enters the opening from the contact position between the refracting part and the edge of the opening. I will do it. Therefore, the tip of the cleaning nozzle is guided more smoothly to the opening.

  A drainage joint according to a fourth aspect is the drainage joint according to the first or second aspect, wherein the refracting portion and the edge of the opening intersect.

  In the drainage joint according to the fourth aspect, the tip of the cleaning nozzle pushed into the interior moves along the refracting portion formed at the boundary between the inclined inner surface and the inner surface of the inner wall. Since the edge of the opening of the refracting portion and the pipe connecting portion intersects, the tip of the cleaning nozzle that has moved along the refracting portion opens from the contact position between the refracting portion and the edge of the opening. Enter smoothly. Further, with this configuration, the bending angle of the cleaning hose can be reduced, and the hose can be prevented from being folded.

  The drainage joint according to claim 5 is the drainage joint according to any one of claims 1 to 4, wherein the inner surface of the back wall is a flat surface in contact with an edge of the opening.

  In the drainage joint according to claim 5, since the inner surface of the back wall is a flat surface in contact with the edge of the opening of the pipe connection portion, the inner surface of the back wall does not overlap with the opening, and the drainage joint is opened from the opening. It can suppress that the flow of the waste_water | drain which flows in into the surrounding wall part turns to the opposite direction to a confluence | joint joint, or a flow is inhibited by hitting an inner surface of a back wall. Moreover, a drainage joint can be reduced in size by making a back wall inner surface into the plane which contact | connects the edge of an opening part.

  The drainage system according to claim 6 connects the drainage joint according to any one of claims 1 to 5 and the vertical pipes arranged in the vertical direction of the building, and the drainage joint is connected. A confluence joint provided with a cleaning nozzle insertion port provided on the opposite side of the drainage joint, a horizontal pulling pipe that communicates with a watering device and flows wastewater from the watering device in a horizontal direction, and extends vertically. Present, one end communicated with the horizontal pipe, the other end is connected to the dredging pipe connection portion of the drainage joint, and the dredging pipe that generates siphon force by dropping the drainage from the watering device, Is provided.

  In the drainage system according to the sixth aspect, the cylindrical portion of the drainage joint is connected to the junction joint, and the vertical pipe is connected to the vertical pipe connection portion of the drainage joint. Accordingly, when the drainage is discharged from the dredger pipe, the drainage flows from the dredger joint connection part of the drainage joint into the cylinder part through the opening, and flows into the vertical pipe through the junction joint from the cylinder part.

  On the other hand, when the cleaning nozzle attached to the tip of the flexible hose is inserted from the cleaning nozzle insertion port provided in the junction joint, the tip of the cleaning nozzle is under the cylindrical inner surface of the cylinder portion of the drainage joint by its own weight. Abut. By pushing the hose from the cleaning nozzle insertion port, the tip of the cleaning nozzle moves from the cylindrical inner surface of the cylindrical portion along the inclined inner surface. When the tip of the cleaning nozzle reaches the refracting portion formed at the boundary between the inclined inner surface and the inner surface of the inner wall, the pushed hose bends and the tip of the cleaning nozzle faces in the direction along the refracting portion. Further, by pushing the hose, the tip of the cleaning nozzle moves along the refracting portion extending toward the opening, and enters the opening opened above the inclined inner surface. That is, the tip of the cleaning nozzle can be guided to the soot tube.

  As described above, the present invention can guide the cleaning nozzle to the inside of the soot tube.

It is sectional drawing which shows the apartment house provided with the siphon drainage system to which the drainage coupling which concerns on embodiment was applied. It is an axial direction longitudinal cross-sectional view of the drainage joint which concerns on embodiment. It is a horizontal sectional view (3-3 line sectional view of Drawing 2) showing the drainage joint concerning an embodiment. It is a radial direction longitudinal cross-sectional view (4-4 sectional view taken on the line of FIG. 3) of the drainage joint which concerns on embodiment. It is a side view of the washing nozzle concerning an embodiment. (A) It is a figure which shows the locus | trajectory of the front-end | tip of the washing nozzle in the axial direction longitudinal cross-sectional view of the drainage joint which concerns on embodiment, (B) is the front-end | tip of the washing nozzle in the radial direction longitudinal cross-sectional view of the drainage joint which concerns on embodiment. It is a figure (6B-6B line sectional view of Drawing 6 (A)) showing a locus. It is a figure which shows the locus | trajectory of the front-end | tip of the washing nozzle in the axial direction longitudinal cross-section of the drainage joint which concerns on a comparative example.

  The drainage joint which concerns on one Embodiment of this invention is demonstrated using FIGS. FIG. 1 shows an overall configuration of a siphon drainage system 12 using a drainage joint 10 according to an embodiment of the present invention. In the present embodiment, an example will be described in which the siphon drainage system 12 is used in an apartment house composed of a plurality of floors.

  The siphon drainage system 12 is provided with a stand pipe 14 that allows drainage to flow downward. The standpipe 14 extends in the vertical direction of the apartment house and penetrates the slabs 16 on each floor of the apartment house. A watering device 18 for draining water is provided at each door of each floor of the apartment house.

  The watering device 18 is a device that drains water, and includes, for example, a kitchen sink, a wash basin, a washing machine, a bath such as a unit bath, a toilet, and the like.

  A siphon drain pipe 22 is connected to the watering device 18 via a trap 20 that stores sealed water. The siphon drain pipe 22 includes a horizontal pulling pipe 24 disposed horizontally on the slab 16, and a soot pipe 26 communicating with the horizontal pulling pipe 24. In the present embodiment, that the horizontal pulling tube 24 is disposed in the horizontal direction includes a case where a gentle gradient is given that is slightly inclined with respect to the horizontal direction. The soot pipe 26 generates siphon force by dropping the drainage to induce the drainage. The soot tube 26 is arranged in the vertical direction along the standing tube 14. The soot pipe 26 is connected to a junction joint 28 that connects the standing pipes 14 via the drainage joint 10.

(Combination joint configuration)
As shown in FIGS. 2 and 3, the junction joint 28 includes a cylindrical vertical pipe connection main pipe portion 30 extending in the vertical direction, and an end portion of the vertical pipe 14 is provided inside the vertical pipe connection main pipe portion 30. The standing tube hole 32 to be inserted is formed to extend in the vertical direction. A cylindrical connecting portion 34 extending in the horizontal direction is formed at a right angle on the side portion of the vertical pipe connection main pipe portion 30 on the side portion of the vertical pipe connection main pipe portion 30 of the junction joint 28. Since the connecting part 34 is cylindrical, the axial center 34C of the outer shape of the connecting part 34 and the axial center 36C of the hole 36 inside the connecting part 34 coincide with each other.

  A cleaning nozzle insertion port 38 is formed on the side portion of the vertical pipe connecting main pipe portion 30 opposite to the connecting portion 34. An insertion hole 40 having the same diameter as the hole 36 of the connection portion 34 is formed in the cleaning nozzle insertion port 38. A screw groove 42 is formed on the outer peripheral surface of the cleaning nozzle insertion port 38, and the cleaning nozzle insertion port 38 is closed by a lid body 44 having an internal screw that is screwed into the screw groove 42. In this embodiment, the cleaning nozzle insertion port 38 is formed at the same height as the connection part 34 in the vertical pipe connection main pipe part 30, but is not limited to this, and is slightly offset vertically and horizontally. You may do it. The junction joint 28 may be one commonly used in drainage facilities such as apartment houses.

(Structure of drainage joint)

  As shown in FIGS. 2 to 4, the drainage joint 10 communicates with the joint body portion 46 connected to the connection portion 34 of the merging joint 28, the joint body portion 46, and the soot pipe connection to which the soot pipe 26 is connected. Part 48. The joint body 46 includes a cylindrical portion 52 having a cylindrical inner side surface 52A extending in the horizontal direction, and a peripheral wall portion 54 having a hemispherical peripheral wall inner surface 54A continuously formed on one end side of the cylindrical portion 52. And a back wall portion 56 having a back wall inner surface 56A which is a flat surface formed on the back side (top portion) of the peripheral wall portion 54. That is, the joint main body 46 is provided with a drainage passage 50 in which a hemispherical dome having the inner surface 56 </ b> A of the inner wall 56 as a top surface is formed on one end side of the cylindrical portion 52. In the present embodiment, the horizontal direction in which the cylindrical portion 52 extends includes a direction slightly inclined with respect to the horizontal direction.

  Here, the cylindrical portion 52 and the peripheral wall portion 54 of the joint body 46 correspond to the cylindrical portion of the present invention, the inner side surface 52A corresponds to the cylindrical inner surface of the present invention, and the peripheral wall inner surface 54A corresponds to the inclined inner surface of the present invention.

  The axial center 46 </ b> C of the outer shape of the joint body 46 and the axial center 50 </ b> C of the drainage passage 50 coincide with each other. Further, the outer axis 46 </ b> C of the joint body 46 and the outer axis 34 </ b> C of the connection part 34 of the junction joint 28 coincide with each other. Furthermore, the axial center 50C of the drainage passage 50 and the back wall inner surface (plane) 56A of the back wall portion 56 are orthogonal to each other.

  A cylindrical soot tube connecting portion 48 communicating with the joint main body portion 46 is formed on the upper portion of the joint main body portion 46 (the peripheral wall portion 54). A hole 49 to which the soot tube 26 is connected is formed at the top of the soot tube connecting portion 48. Further, an opening 47 is formed below the hole 49 so as to communicate with the hole 49 and open at one end to the peripheral wall inner surface 54 </ b> A of the peripheral wall 54. In the present embodiment, the axial center 49C of the hole 49 of the soot tube connecting portion 48 and the axial center 47C of the opening 47 coincide.

  As shown in FIGS. 3 and 4, the axial center of the opening 47 is located at a position offset from the axial center 46 </ b> C of the joint main body 46 in the direction of the arrow A (a position displaced from the axial center 46 </ b> C by the dimension OL). 47C (the axial center 49C of the hole 49 of the soot tube connecting portion 48) is located. Further, as shown in FIG. 4, the shaft center 46 </ b> C of the joint main body 46 and the shaft center 47 </ b> C of the opening 47 (the shaft center 49 </ b> C of the hole portion 49 of the soot tube connection portion 48) are at right angles.

  As shown in FIG. 4, the opening 47 opens obliquely upward on the peripheral wall 54 in the direction of the arrow A in the drawing arrow A direction of the axis 46 </ b> C of the joint body 46. The inner diameter of the opening 47 is formed smaller than the inner diameter of the hole 49 of the soot tube connection part 48.

The inner surface (plane) 56A of the inner wall 56 is formed at a right angle to the axis 46C (parallel to the axis 47C of the opening 47) (see FIG. 2), and the entire circumference of the boundary with the inclined inner surface 54A. A refracting portion 80 is formed over the entire area. Here, the “refractive portion” means that an angle with an angle is formed at the boundary between the inner surface 56A of the back wall and the inclined inner surface 54A in a cross-sectional view along the axis 50C of the drainage passage 50 (see FIG. 2). Say.
In the embodiment of FIG. 4, the peripheral wall inner surface 54 </ b> A of the peripheral wall portion 54 and the refracting portion 80 of the rear wall inner surface 56 </ b> A of the rear wall portion 56 are formed so as to make point contact with the edge of the opening 47. Here, “point contact” means that the portion where the opening 47 is opened on the peripheral wall inner surface 54A (virtual end surface of the opening 47) and the inner surface 56A of the back wall do not intersect at one point. Say.
In addition, “intersection”, which will be described later, means that the refracting portion 80 extends and intersects to the edge of the portion where the opening 47 is opened on the peripheral wall inner surface 54A (virtual end surface of the opening 47). Say.

(Configuration of cleaning nozzle)
As shown in FIG. 5, the cleaning nozzle 60 includes a bendable (flexible) metal hose 62, a spherical jet part 64 provided on the tip side of the metal hose 62, and the tip of the jet part 64. And a guide portion 66 provided on the side.

  The metal hose 62 is formed so as to be bendable, and a pipe line for supplying cleaning water to the injection unit 64 is formed inside.

  The injection part 64 is a substantially metal sphere, and a plurality of nozzle holes 68 are formed at regular intervals in the circumferential direction on the metal hose 62 side of the outer peripheral surface. Therefore, the injection unit 64 is configured to inject cleaning water on the side opposite to the nozzle insertion direction (rear side) (see the broken line arrow in FIG. 5).

  The guide portion 66 has a flexible (flexible) rod member 70 that can be bent toward the distal end side of the injection portion 64, and a metal distal end abutting portion 72 that is attached to the distal end of the rod member 70 and has a hemispherical distal end. And spherical metal contact portions 74 and 76 that are mounted between the tip contact portion 72 of the rod member 70 and the injection portion 64 at a predetermined interval.

  Therefore, when the cleaning nozzle 60 is inserted into the drainage joint 10 and brought into contact with the wall surface or the like of the drainage passage 50, the tip contact portion 72 moves along the wall surface by pushing the hose 62, and the subsequent contact is made. The rod members 70 are bent while the portions 74 and 76 are in contact with the wall surface (see the two-dot chain line portion in FIG. 5).

(Function, effect)
Next, functions and effects of the drainage joint 10 and the siphon drainage system 12 of this embodiment will be described.

  First, the case where the soot pipe 26 is cleaned will be described. In this case, the lid body 44 is removed from the cleaning nozzle insertion port 38 of the merging joint 28, and the cleaning nozzle 60 is inserted into the merging joint 28 from the cleaning nozzle insertion port 38.

  A guide portion 66 provided at the tip of the cleaning nozzle 60 is connected to the drainage passage 50 of the drainage joint 10 that is connected to the hole portion 36 of the connection portion 34 from the cleaning nozzle insertion port 38 of the junction joint 28 across the hole 32 for the standpipe. Inserted into.

  As shown in FIGS. 6A and 6B, the guide portion 66 provided at the tip of the hose 62 of the cleaning nozzle 60 inserted into the merging joint 28 from the cleaning nozzle insertion port 38 has its tip caused by its own weight. Since it hangs downward, the tip contact portion 72 contacts the lower side of the inner side surface 52 </ b> A of the cylindrical portion 52 in the drainage passage 50. In addition, the arrow in a figure shows the locus | trajectory which the front-end | tip contact part 72 of the washing nozzle 60 moved.

  When the cleaning nozzle 60 (the hose 62) is pushed in from the cleaning nozzle insertion port 38 in this state, the tip contact portion 72 of the guide portion 66 is moved into the cylindrical portion 52 as shown by an arrow B in FIG. It moves to the back wall portion 56 side while being in contact with the lower side of the side surface 52A. By further pushing the cleaning nozzle 60 (hose 62), the tip contact portion 72 of the cleaning nozzle 60 rises along the peripheral wall inner surface 54A of the peripheral wall portion 54, and the inner surface 56A of the rear wall portion 56 and the peripheral wall of the peripheral wall portion 54 It reaches the refracting portion 80 formed at the boundary with the inner surface 54A. When the tip of the cleaning nozzle 60 hits the inner surface 56 </ b> A of the back wall, the hose 62 is bent, and the guide portion 66 including the tip contact portion 72 faces in the extending direction of the refracting portion 80. Further, by pushing the cleaning nozzle 60 (hose 62), the tip contact portion 72 of the cleaning nozzle 60 moves in the circumferential direction along the refracting portion 80 including a portion extending in a slanting direction in the horizontal direction. In this case, as shown in FIG. 6B, it moves counterclockwise (see FIG. 6B, arrow B1) or clockwise (see FIG. 6B, arrow B2) along the refracting portion 80. When the refracting portion 80 and the edge of the opening 47 reach the point where the edge is in point contact, the tip contact portion 72 enters the opening 47, and then the inside of the tub tube 26 from the opening 47. Can enter. That is, the cleaning nozzle 60 can be guided to the inside of the soot tube 26.

  Subsequently, a case where the drainage pipe 26 is cleaned using the drainage joint 100 according to the comparative example will be described, and the operation of the drainage joint 10 will be further clarified. Among the components of the drainage joint 100, the same components as those of the drainage joint 10 are denoted by the same reference numerals plus 100, and detailed description thereof is omitted.

  As shown in FIG. 7, the drainage joint 100 of the comparative example is different in that the drainage passage 150 does not have a back wall surface and the peripheral wall inner surface 154 </ b> A of the peripheral wall portion 154 has a complete hemispherical shape.

  In the case of the drainage joint 100 as well, similarly to the drainage joint 10, by pushing the cleaning nozzle 60 (hose 62), the tip contact portion 72 of the cleaning nozzle 60 contacts the lower side of the inner side surface 152A of the cylindrical portion 152, The peripheral wall 154 rises along the peripheral wall inner surface 154A. However, when the apex position P of the peripheral wall inner surface 154A of the peripheral wall portion 154 is exceeded, the hose 62 is folded back and the guide portion 66 cannot move any more. That is, it becomes impossible to push the cleaning nozzle 60 further. Therefore, it becomes impossible to guide the cleaning nozzle 60 to the soot tube 26.

  As described above, the drainage joint 10 of the present embodiment has an opening even when the opening 47 is opened on the peripheral wall inner surface 54A of the peripheral wall 54 so that the shaft center 46C and the shaft center 47C (shaft center 49C) are offset. The rear wall portion 56 is formed at a position where the edge of the portion 47 contacts, and the edge of the opening portion 47 with the refracting portion 80 formed at the boundary between the peripheral wall inner surface 54A of the peripheral wall portion 54 and the inner surface 56A of the rear wall portion 56. Point contact with the part. For this reason, when the cleaning nozzle 60 is pushed in from the cleaning nozzle insertion port 38, the tip contact portion 72 extends along the refracting portion 80 between the peripheral wall inner surface 54 </ b> A of the peripheral wall portion 54 and the inner surface 56 </ b> A of the rear wall portion 56. By moving, the tip contact portion 72 can easily enter the opening 47 from the position where the refracting portion 80 and the edge of the opening 47 are in point contact. Further, by pushing the cleaning nozzle 60, the injection unit 64 is guided to the inside of the soot tube 26. Thus, even if the opening 47 opened on the peripheral wall inner surface 54 </ b> A of the peripheral wall 54 is opened at the offset position, the cleaning nozzle 60 is guided to the soot tube 26.

  In addition, since the back wall portion 56 that is a flat surface as the top surface of the hemispherical peripheral wall portion 54 is formed so as to be in contact with the edge portion of the opening portion 47 (point contact), the back wall portion 56 and the opening are formed. The portion 47 does not partially overlap. Therefore, the flow of drainage flowing from the opening 47 of the drainage joint 10 through the peripheral wall portion 54 and the cylindrical portion 52 into the riser hole portion 32 of the riser connection main pipe portion 30 is not affected. Furthermore, since the inner surface 56A of the back wall which is a plane is parallel to the axis 47C of the opening 47, it is further suppressed that the flow of the drainage is impaired. That is, the drainage joint 10 can guide the cleaning nozzle 60 to the soot pipe 26 without impairing the good drainage described later. Moreover, size reduction of the drainage joint 10 can be achieved.

  In addition, in the drainage joint 10 which concerns on this embodiment, although it forms so that the edge part of the refractive part 80 and the opening part 47 may carry out point contact, you may form so that it may cross | intersect. However, the point contact makes it possible to suppress the bending angle of the guide portion 66 of the cleaning nozzle 60 and to improve the guideability of the cleaning nozzle 60 (the cleaning nozzle 60 is easy to guide to the opening 47).

  Further, in the drainage joint 10 according to the present embodiment, the edge of the opening 47 and the back wall inner surface 56 </ b> A of the back wall 56 are formed so as to coincide with each other in the axial direction of the drainage passage 50. May slightly overlap the opening 47 in the axial direction or may be slightly separated.

  Furthermore, although the drainage joint 10 according to the present embodiment has been described on the assumption that the peripheral wall inner surface 54A of the peripheral wall portion 54 is formed in a hemispherical shape, the present invention is not limited to this. 54 A of surrounding wall inner surfaces should just be formed so that it may incline to the axial center 46C side toward the back wall part 56 side. For example, the inner surface of the peripheral wall may be a polygonal frustum shape, but a hemispherical shape is most preferable.

  Furthermore, in the drainage joint 10 according to the present embodiment, the cylindrical portion 52 has a circular cross section, but is not limited thereto. For example, the cross section may be a polygon.

  Furthermore, in the drainage joint 10 according to the present embodiment, the back wall portion 56 is formed in a plane perpendicular to the axial center 46C of the joint body portion 46, but a boundary (corner portion) 80 between the peripheral wall portion 54 and the peripheral wall portion 54 is provided. The back wall 56 may be formed as a concave surface or a convex surface. However, in the case where the rear wall portion 56 is a convex surface protruding toward the merging joint 28 side, the flow of the drainage may be impaired, and in the case of a concave surface, the drainage joint 10 may be increased in size. Therefore, it is preferable that the back wall part 56 is a plane. Moreover, when performing a leak test, since the outer surface of the back wall part 56 in the drainage joint 10 is a flat surface, there is an advantage that a band can be hung between the junction joint 28 and the drainage joint 10.

  Next, drainage of the drainage joint 10 and the siphon drainage system 12 will be described.

  As shown in FIG. 4, the dredged pipe connecting portion 48 has an opening portion 47 at a position obliquely above the axial center 46 </ b> C side of the joint main body portion 46 in the drawing arrow A direction in the peripheral wall portion 54 of the drainage joint 10. Therefore, the drainage discharged from the opening 47 is changed in the horizontal direction by the hemispherical peripheral wall portion 54 and in the direction intersecting the axis 46C of the joint body portion 46 (see arrow C in FIG. 3). It discharges in the direction shifted to the direction opposite to the arrow A direction of the axis 30C of the pipe connecting main pipe part 30.

  As a result, as shown in FIG. 3, the drainage falls while turning clockwise (in the direction of the arrow CW) inside the vertical pipe connection main pipe portion 30 and the vertical pipe 14, and the vertical pipe connection main pipe portion 30, In addition, a relatively large ventilation space communicating in the vertical direction can be formed in the vicinity of the axial center of the upright tube 14. By forming a relatively large ventilation space in the vicinity of the axial center of the riser 14 in the vertical direction, drainage can flow smoothly in the riser 14 and the change in the atmospheric pressure in the riser 14 is suppressed. I can do it. In this way, by suppressing the change in the atmospheric pressure in the standpipe 14, breakage of the trap 20 of the watering device 18 can be suppressed.

  In the drainage joint 10 of the present embodiment, since the dredger pipe 26 is connected to the dredger pipe connecting portion 48 extending in the vertical direction, the dredge pipe 26 extending in the vertical direction can be disposed along the vertical pipe 14 without being bent. It is possible and does not require a large installation space at the place where the drainage joint 10 is disposed. Further, by connecting the drainage joint 10 to the existing junction joint 28, the drainage from the siphon drainage pipe 22 can flow smoothly in the vertical pipe 14.

[Other Embodiments]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and other various modifications can be made without departing from the spirit of the present invention. It is.

  In the above embodiment, the example in which the drainage joint 10 is used in the siphon drainage system 12 has been described. However, a normal drainage pipe that does not generate siphon force can be connected to the vertical pipe connection portion 48 of the drainage joint 10.

  In the above embodiment, the shaft center 46C of the joint main body 46 and the shaft center 47C of the opening 47 (the shaft center 49C of the hole 49 of the soot tube connecting portion 48) are offset in the horizontal direction, The direction of the center 46C and the direction of the axis 47C of the opening 47 are perpendicular, but the axis 46C of the joint body 46 and the axis 47C of the opening 47 may be offset in a direction other than the horizontal direction. The direction of the axis 46C of the joint body 46 and the direction of the axis 47C of the opening 47 may be other than a right angle. Further, the present invention can also be applied to a drainage joint in which the shaft center 46C of the joint main body 46 and the shaft center 47C of the opening 47 (the shaft center 49C of the hole 49 of the soot tube connecting portion 48) are not offset in the horizontal direction.

  Moreover, in the said embodiment, although the washing nozzle 60 had the guide part 66 at the front-end | tip, this may be missing. That is, the cleaning nozzle 60 may have a structure having only the injection portion 64 at the tip of the hose 62. In this case, when the injection unit 64 reaches the refracting unit 80, it strikes the inner surface 56A of the back wall. As a result, the hose 62 is bent, and the injection unit 64 moves along the refracting unit 80 and enters the opening 47 that is in point contact with the refracting unit 80. That is, the cleaning nozzle 60 can be guided to the soot tube 26 as in the embodiment.

  In the present embodiment, the refracting portion 80 is formed over the entire periphery of the boundary between the peripheral wall inner surface 54A and the back wall inner surface 56A, but may be formed at a part of the boundary. In particular, the axial center 46C (drainage passage) of the joint body 46 from a position lower than the height of the axial center 46C (axial center 50C of the drainage passage 50) of the joint body 46 at the boundary between the inner peripheral surface 54A and the inner surface 56A. It is preferable that the refracting portion 80 is formed up to a height of 50 axial centers 50C). This is because the cleaning nozzle 60 can be guided to the soot tube 26 by providing at least the refracting portion 80 below the boundary where the tip of the cleaning nozzle 60 often abuts.

  In the present embodiment, the refracting portion 80 is formed in a circular shape, but the present invention is not limited to this. The shape of the refracting portion is not particularly limited as long as it is formed toward the opening 47 along the boundary between the inner peripheral surface 54A and the inner inner surface 56A. Here, “extends toward the opening 47” means that the other end (end point) of the refracting portion 80 is more than one end (start point) of the refracting portion 80 on the lower end side of the boundary between the peripheral wall inner surface 54A and the inner surface 56A. Is formed so as to approach the opening 47.

  DESCRIPTION OF SYMBOLS 10 ... Drainage joint, 12 ... Siphon drainage system (drainage system), 14 ... Stand pipe, 18 ... Watering device, 24 ... Horizontal drawing pipe, 26 ... Saddle pipe, 28 ... Confluence joint, 38 ... Washing nozzle insertion port, 47 ... Opening part, 49 ... Hole part, 50 ... Drain passage, 52 ... Cylindrical part (cylindrical part), 52A ... Inner side surface (cylindrical inner surface), 54 ... Peripheral wall part (cylindrical part), 54A ... Inner peripheral surface (inclined inner surface) 56 ... Back wall, 56A ... Inner wall inner surface, 80 ... Refraction part

Claims (6)

A cylindrical inner surface that is connected to a side surface of a joint joint provided in a vertical pipe disposed in a vertical direction of the building and extends in a horizontal direction, and an end portion on the opposite side to the joint joint that is continuous with the cylindrical inner surface A cylindrical portion provided with an inclined inner surface inclined toward the axial center side of the cylindrical inner surface toward
Provided at the end of the cylindrical portion on the opposite side of the merging joint, and a back wall portion that closes the cylindrical portion;
A soot pipe connecting portion connected to a soot pipe that communicates with the opening that opens on the upper side of the inclined inner surface and drops the drainage from the watering device,
The provided, bent portion is formed in the boundary between the inclined inner surface and the rear wall inner surface of the inner wall portion, at least a portion of the bent portion is extended toward the opening,
A drainage joint in which a drainage passage is formed in the cylindrical portion so that a cleaning nozzle can be inserted from the side opposite to the back wall portion .   2. The drainage joint according to claim 1, wherein the refracting portion extends from a position lower than a height of an axial center of the cylindrical portion at the boundary to a height of an axial center of the cylindrical portion.   The drainage joint according to claim 1 or 2, wherein the refracting portion and the edge of the opening are in point contact.   The drainage joint according to claim 1 or 2, wherein an edge portion of the refracting portion and the opening portion intersect each other.   The drainage joint according to any one of claims 1 to 4, wherein the inner surface of the back wall is a flat surface in contact with an edge of the opening. The drainage joint according to any one of claims 1 to 5,
Connecting the vertical pipes arranged in the vertical direction of the building, the drainage joint is connected, and a confluence joint provided with a cleaning nozzle insertion port provided on the opposite side of the drainage joint,
A horizontal pipe that communicates with a watering device and that drains water from the watering device in a horizontal direction;
Extending in the vertical direction, one end communicates with the horizontal pipe, the other end is connected to the drain pipe connection portion of the drainage joint, and siphon force is generated by dropping the drainage from the watering device竪管,
With drainage system.

Images