JP2016037817A - Confluent basin - Google Patents

Abstract

CONSTITUTION: A confluent basin 10 has a basin body 12, and is installed under a floor 110 of a building. The basin body 12 is provided with two inflow pipe parts 30 for making drain water flow in the basin body 12 from the lateral direction of the basin body 12, one outflow pipe part 24 for making the drain water flowed in the basin body 12 flow out in the lower direction and an overflow preventive part 32. The two inflow pipe parts 30 are formed so that the mutual pipe axes cross at an angle less than 180 degrees. The overflow preventive part 32 is provided on a sidewall 16 of the basin body 12 between the two inflow pipe parts 30, on the downstream side in the inflow direction of the drain water from the two inflow pipe parts 30, that is, on the opposite side in the projection direction of the inflow pipe parts 30. The overflow preventive part 32 reduces a flow speed of the drain water toward the other inflow pipe part 32 or changes the flow direction of the drain water to the separate direction.EFFECT: An overflow of drain water to the other inflow pipe part 30 from one inflow pipe part 30 is properly prevented, and the drain water is smoothly drained from an outflow pipe part 24.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a merger, and more particularly to a merger installed, for example, under a floor of a building.

  An example of a conventional merger of this type is disclosed in Non-Patent Document 1. As shown in FIG. 16, the merger 1 of Non-Patent Document 1 is a so-called 45 ° WY type merger comprising a main body 2, three inflow pipe parts 3 a and 3 b, and an outflow pipe part 4. The three inflow pipe portions 3a and 3b are provided on one side of the central inflow pipe portion 3a perpendicular to the side wall 5 of the main body 2 and the central inflow pipe portion 3a. And two oblique inflow pipe portions 3b forming an angle. In the confluence 1 of Non-Patent Document 1, the overflow of drainage to the other inflow pipe portions 3a and 3b is reduced by preventing the inflow ports from facing each other from the front.

  On the other hand, Patent Document 1 discloses that a merging apparatus provided with a partition body in a main body is increasingly disclosed. In the merger disclosed in Patent Document 1, a partition body having partition plates that partition between the inflow ports is further provided inside the main body. The partition body prevents the overflow of drainage from one inflow port to the other inflow port in the main body.

Japanese Patent No. 4895892

Kubota Sea Eye Co., Ltd. Catalog No. C00- 14.3.13 JN. NP “General Catalog for Sewerage” P.2-41

  However, in the confluence 1 of Non-Patent Document 1, since the side wall 5 of the main body 2 is formed in a substantially circular shape, when the drainage with a momentum flows from one of the diagonal inflow pipe portions 3b, the drainage is drained. It wraps around the inner surface of the side wall 5 of the main body 2 and overflows to the other oblique inflow pipe portion 3b.

  Further, in the merger of Patent Document 1, since the partition body is further provided inside the main body, the flow path in the main body becomes narrower. For this reason, when solid matter flows into the main body as a lump, the solid matter may be caught between the partition body and the main body, and the drainage pipe may be clogged as a result of merging.

  Therefore, the main purpose of this invention is to provide a new, confluence.

  Another object of the present invention is to provide a merger that can appropriately prevent overflow to other inflow pipe portions without providing a partition.

  The first invention is a confluence that is installed under the floor of a building, and includes a main body having side walls, and two inflow pipe portions that allow the drainage to flow in from the lateral direction of the main body, where the tube axes intersect each other at less than 180 degrees. , One outflow pipe part that drains the wastewater that has flowed into the main body downward, and overflow prevention provided on the side wall of the main body between the two inflow pipe parts in the inflow direction of the two inflow pipe parts With a part.

  In the first invention, the merging masu is further provided with a main body and installed under the floor of the building. The main body is provided with two inflow pipe sections, one outflow pipe section, and an overflow prevention section. The inflow pipe part is provided so as to protrude laterally from the side wall of the main body, and is connected to a drainage branch pipe connected to residential equipment such as a toilet or bath, so that wastewater flows into the main body from the side of the main body. Let The two inflow pipe portions are arranged such that their pipe axes intersect at an angle of less than 180 degrees. That is, the two inflow pipe portions are configured such that the mutual inlets do not face each other from the front. The outflow pipe portion is connected to a drainage main pipe that discharges domestic wastewater to the outside, and drains the wastewater that has flowed into the main body downward. The overflow prevention part is provided on the side wall of the main body between the two inflow pipe parts on the downstream side of the inflow direction of the drainage from the two inflow pipe parts, that is, on the opposite side to the protruding direction of the inflow pipe part. The overflow prevention unit reduces the flow rate of drainage toward other inflow pipes when the drainage of vigorous water flows into the main body from the inflow pipe, or changes the flow direction of drainage to another direction. By changing it, the overflow of waste water is prevented.

  According to the first invention, since the overflow prevention portion is provided on the side wall of the main body, the overflow of the waste water from one inflow pipe portion to the other inflow pipe portion is appropriately prevented. Is discharged smoothly. Further, since a partition is not provided in the main body, a wider flow path can be secured in the main body.

  A second invention is dependent on the first invention, and the overflow prevention portion includes an inner surface whose inward direction does not face the inside of the other inflow pipe portion.

  In the second aspect of the invention, for example, a portion of the inner surface of the overflow prevention portion in the vicinity of the boundary with the inflow pipe portion does not face the inflow pipe portion. Even when vigorous wastewater flows into the main body from one inflow pipe, the flow direction of the wastewater is different from the direction toward the other inflow pipe due to the inner surface of this overflow prevention part. be changed. Or the momentum of the wastewater which goes to another inflow pipe part is reduced.

  According to the second invention, the overflow of the waste water from one inflow pipe part to the other inflow pipe part is appropriately prevented.

  The third invention is dependent on the second invention, and the distance from the axial center of the outflow pipe portion to the inner side surface of the overflow preventing portion is not uniform in a plan view.

  In the third invention, the distance from the axial center of the outflow pipe portion to the inner side surface of the overflow prevention portion is not uniform in plan view. That is, the inner side surface of the overflow prevention unit is not arcuate. Thereby, the momentum of the water which goes around in the lateral direction is reduced, and the overflow of the drainage is prevented.

  According to the third invention, the overflow of the drainage from one inflow pipe part to the other inflow pipe part is more appropriately prevented.

  4th invention is dependent on 2nd or 3rd invention, and the overflow prevention part contains the protrusion part which protrudes outward from the side wall of a main body more and more.

  In 4th invention, an overflow prevention part contains a protrusion part. The protruding portion protrudes outward from the side wall of the main body. When vigorous wastewater flows into the main body from the inflow pipe portion, a part of the wastewater temporarily stays in the protruding portion (projecting space) provided in the overflow prevention portion. This reduces the drainage load in the outflow direction. That is, since the drainage does not flow into the outflow pipe at a time, the drainage flows smoothly without blocking the outflow pipe. Therefore, drainage performance is improved.

  According to the fourth aspect of the invention, since the protrusion is provided in the overflow prevention part, the drainage load can be reduced. Thereby, drainage performance further improves.

  A fifth invention is dependent on the first to fourth inventions, and the overflow prevention portion includes a collision plane.

  In 5th invention, the collision plane where waste_water | drain collides is formed in the overflow prevention part of the position facing an inflow port. When vigorous wastewater flows into the main body from the inflow pipe portion, the wastewater collides with a collision plane formed in the overflow prevention portion, and the flow velocity decreases. Thereby, the momentum of the water which goes around in the lateral direction is reduced, and the overflow of the drainage is prevented.

  According to the fifth aspect, the overflow of the waste water from one inflow pipe portion to the other inflow pipe portion is appropriately prevented.

  6th invention is dependent on 1st thru | or 5th invention, and the vertex position which becomes the most overflow prevention part side among the boundary lines which one side of the inflow pipe part protrudes from a main body is the other inflow pipe part. The extension line extending the tube wall in the direction of the main body is located on the opposite side of the overflow prevention portion from the position where it intersects the main body.

  In the sixth aspect of the invention, the extended line in which the apex position that is the most on the overflow prevention side, that is, the opposite side of the protruding direction, of the boundary line between the main body and the inflow pipe portion extends the tube wall of the other inflow pipe portion. It is made to come to the opposite side of the overflow prevention part rather than the position where the main body crosses. In other words, if it is assumed that the pipe of the other inflow pipe is extended straight into the main body, the inlet of the other inflow pipe should not enter the range of the extended pipe. Is done.

  According to the sixth aspect of the invention, since the waste water from one inflow pipe portion is prevented from going directly to the inside of the other inflow pipe portion, the overflow of the waste water can be prevented more appropriately.

  According to the present invention, since the overflow prevention portion is further provided on the side wall of the main body, the overflow of the drainage from one inflow pipe portion to the other inflow pipe portion is appropriately prevented, and the drainage smoothly flows from the outflow pipe portion. To be discharged. Further, since a partition is not provided in the main body, a wider flow path can be secured in the main body.

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

It is sectional drawing which shows the state which connected the drainage main pipe and the drainage branch pipe by the confluence | merging frame of one Example of this invention. It is a side view which shows the merger of FIG. It is a top view which shows the merging machine of FIG. FIG. 4 is a cross-sectional view showing a joining line along line IV-IV in FIG. 3. It is a side view which shows a mode that the cover was removed from the confluence | merging of FIG. FIG. 6 is a plan view showing the merger in FIG. 5. FIG. 7 is a cross-sectional view showing a cross section of the merged line along the line VII-VII in FIG. 6. FIG. 6 is a cross-sectional view showing a cross section of the merged line along the line VIII-VIII in FIG. 5. It is an illustration figure for demonstrating the position and the range in the confluence | merging of FIG. It is a side view which shows the lid | cover with which the merging master of FIG. 1 is equipped. It is sectional drawing which shows the other Example which joins. It is sectional drawing which shows the further another Example of a confluence | merging. It is sectional drawing which shows the further another Example of a confluence | merging. It is sectional drawing which shows the further another Example of a confluence | merging. It is sectional drawing which shows the further another Example of a confluence | merging. It is sectional drawing which shows an example of the conventional merger.

  Referring to FIG. 1, merging masu 10, which is an embodiment of the present invention, is installed under floor 110 of a detached house, etc., and is used for sewage and miscellaneous drainage discharged from residential equipment such as toilets and baths. A plurality of drainage branch pipes 120 through which drainage flows are connected to a drainage main pipe 116 that discharges the wastewater to the outside. As shown in FIG. 1 to FIG. 4, the merge 10 includes a main body 12 and a lid 14 and is formed of a synthetic resin such as vinyl chloride. The merging mast 10 is a so-called drop muffle which discharges the waste water flowing from the side (lateral direction) of the main body 12 to the lower side of the main body 12.

  As shown in FIGS. 5 to 8, the main body 12 is formed by injection molding or the like, and includes the side wall 16 and the overflow prevention portion 32.

  The side wall 16 is formed in a substantially cylindrical shape, and an upper end opening 18 is formed in the upper part of the side wall 16. The inner diameter of the upper end opening 18 is set to 150 mm, for example. The upper end opening 18 is provided with an engaging portion 20 that protrudes outward, and a lid 14 described later is detachably connected thereto. When the lid 14 is removed, the upper end opening 18 is used as an inspection port.

  Further, a central inflow pipe portion 26 is provided on the side wall 16 of the main body 12 so as to protrude laterally. The central inflow pipe portion 26 is formed in a cylindrical shape having a receiving structure, and its inner diameter is, for example, 83 mm. A locking groove 28 is provided at the outer surface end of the central inflow pipe portion 26. In the following description, it is assumed that the direction in which the central inflow pipe portion 26 is provided is the front (front) side of the merge 10.

  Two oblique inflow pipe portions 30 projecting obliquely forward are provided on both sides of the central inflow pipe portion 28. The two oblique inflow pipe portions 30 correspond to two inflow pipe portions that allow the drainage to flow in from the lateral direction of the main body 12 where the tube axes intersect with each other at less than 180 degrees. The oblique inflow pipe portion 30 is formed in a cylindrical shape having a receiving structure, and its inner diameter is, for example, 83 mm. A locking groove 28 is provided at the outer surface end of the oblique inflow pipe portion 30. In this embodiment, the tube axes of the two oblique inflow pipe portions 30 intersect with each other at an angle of about 90 °, and the tube axes of the oblique inflow pipe portions 30 are substantially the same as the tube axis of the central inflow pipe portion 26. Intersect at an angle of 45 °. In other words, the two oblique inflow pipe portions 30 are configured such that the mutual inflow ports 30a (the openings at the connection portion between the main body 12 and the oblique inflow pipe portion 30) do not face each other from the front. Thereby, it is prevented that drainage goes directly from the one oblique inflow pipe part 30 to the inside of the other oblique inflow pipe part 30.

  Between the two oblique inflow pipe portions 30 on the back side of the side wall 16, that is, on the downstream side in the inflow direction of drainage from the oblique inflow pipe portion 30, an overflow prevention portion 32 that is formed integrally with the side wall 16 is provided. .

  The overflow prevention part 32 includes a back surface part 48, a connection part 50, and an upper surface part 52, and is formed in a substantially rectangular shape with rounded corners in plan view. By forming the inner surface of the overflow prevention part 32 in a non-arc shape, the momentum of the water that goes around the overflow prevention part 32 in the lateral direction is reduced. Due to the overflow prevention part 32 and the side wall 16, the main body 12 has a substantially horseshoe shape in plan view. Specifically, the back surface portion 48 is formed in a flat plate shape and is provided at the back surface position of the main body 12. The inner side surface of the back surface portion 48 is formed in a planar shape on the downstream side in the inflow direction of the oblique inflow pipe portion 30 and becomes a collision plane 34 on which the drainage from each oblique inflow pipe portion 30 collides. When vigorous wastewater flows into the main body 12 from the oblique inflow pipe portion 30, the wastewater collides with the collision plane 34, and the flow velocity decreases. The connecting portion 50 is formed in a flat plate shape that is bent from both end edges of the back surface portion 48 and extends forward, and connects the back surface portion 48 and the side wall 16. The inner surface of the connection portion 50, that is, the portion in the vicinity of the boundary between the overflow prevention portion 32 and the oblique inflow pipe portion 30 is formed so as to extend straight forward, and does not face the inside of the oblique inflow pipe portion 30. To be. Thus, even when vigorous waste water flows into the main body 12 from one oblique inflow pipe portion 30, the flow direction of the waste water is changed to a direction different from the direction toward the other oblique inflow pipe portion 30. . Or the momentum of the waste_water | drain toward the other diagonal inflow pipe part 30 is reduced. The upper surface portion 52 is formed in a flat plate shape, and is provided so as to cover the back surface portion 48 and the connecting portion 50.

  Moreover, the overflow prevention part 32 has a protruding part 36 that protrudes outward (rearward) from the rear end 16 a of the side wall 16. The protruding length of the protruding portion 36, that is, the distance from the rear end 16a of the side wall 16 to the back surface portion 48 is, for example, 50 mm. A protruding space is formed inside the protruding portion 36. When vigorous wastewater flows into the main body 12 from the oblique inflow pipe portion 30, a part of the wastewater temporarily stays in the protruding portion 36 (projecting space) provided in the overflow prevention portion 32. This reduces the drainage load in the outflow direction. That is, since the drainage does not flow into the outflow pipe 24 at a time, the drainage flows smoothly without the outflow pipe 24 being blocked.

  Here, referring to FIG. 9, the apex position a that is closest to the overflow prevention part 32 among the boundary lines from which one of the oblique inflow pipe parts 30 protrudes from the main body 12 is the second oblique inflow pipe part 30. The extension line extending the tube wall in the direction of the main body 12 is made to be on the opposite side of the overflow prevention portion 32 from the position where it intersects with the main body 12. That is, the apex position a closest to the overflow prevention part 32 in the boundary line between one of the oblique inflow pipe portions 30 and the main body 12 is left as it is, and the other oblique inflow pipe portion 30 is placed in the main body 12 as it is. When it is assumed that the straight line is extended, by shifting it from the extended pipe range x to the opposite side of the overflow prevention part 32, the other oblique inflow pipe part 30 is within the range x. The inflow port 30a is prevented from entering. Thereby, the waste water from one oblique inflow pipe part 30 is prevented from going directly to the inside of the other oblique inflow pipe part 30. In addition, when the oblique inflow pipe portion 30 is connected to a bent pipe 120a such as a 45 ° elbow, the flow of drainage is twisted, and is more lateral than the inlet 30a when flowing into the main body 12. There is a possibility to spread greatly in the direction. Therefore, in such a case, a line connecting the apex position b and the position a on the side opposite to the overflow prevention part 32 most in the boundary line between the other oblique inflow pipe part 30 and the main body 12, and the range An angle c between the x overflow prevention portion 32 and the line forming the outer edge on the opposite side may be set to 8.8 °, for example. Accordingly, even when the drainage is twisted and spreads in the lateral direction, the drainage from one oblique inflow pipe portion 30 is prevented from going directly to the inside of the other oblique inflow pipe portion 30. The distance d between the position a and the position b is preferably set to 185 mm, for example. According to the experiment of the present inventor, when the oblique inflow pipe portion 30 is connected to a bent pipe 120a such as a 45 ° elbow connected to a water-saving toilet of 6L or less, if the distance d is set to 185 mm or more, one oblique inflow It was confirmed that the drainage did not reach from the inlet 30a of the pipe part 30 to the inlet 30a of the other oblique inlet pipe part 30.

  5 to 8, a tapered bottom wall portion 22 is formed in the lower portion of the side wall 16 and the overflow prevention portion 32, and the upper surface of the bottom wall portion 22, that is, the bottom surface of the main body 12, is directed toward the center. It becomes a downward slope toward. The height from the upper end of the side wall 16 to the lower end of the bottom wall portion 22 (that is, the height of the main body 12 coming out of the foundation 114) is set to 150 mm, for example. A cylindrical outflow pipe portion 24 extending in the vertical direction is formed below the center portion of the bottom wall portion 22. The outer diameter of the outflow pipe portion 24 is the same as or substantially the same as the inner diameter of the drain main pipe 116 and is, for example, 106 mm. The height of the outflow pipe portion 24 is set to 40 mm, for example.

  A lid 14 is detachably provided on the top of the main body 12. As shown in FIG. 10, the lid 14 is formed by injection molding or the like, and includes an inner cylinder portion 38 having a top cylindrical shape. On the outer surface of the inner cylinder portion 38, a flange portion 40 formed in a cap shape that opens downward is provided, and the lower surface of the flange portion 40 further comes into contact with the upper end opening portion 18 of the main body 12. The height from the lower surface of the collar part 40 to the upper surface of the inner cylinder part 38 is 40 mm, for example.

  A cylindrical outer tube portion 44 is formed on the lower surface of the flange portion 40. The outer surface of the outer cylinder portion 44 is further along the inner surface of the side wall 16 of the main body 12 (see FIG. 4), and the O-ring 46 attached to the outer surface of the outer cylinder portion 44 is increasingly used for the side wall 16 of the main body 12 and the outer cylinder portion 44. Airtightness and watertightness between the outer surface and the outer surface are maintained. In addition, four receiving portions (not shown) are formed on the lower portion of the inner side surface of the cap-shaped flange portion 40 so as to protrude inward. The receiving portion is integrated with the flange portion 40 and has a “U” -shaped cross-sectional shape, and is fitted to the engaging portion 20 of the main body 12. First, the outer cylindrical portion 44 of the lid 14 is inserted into the upper end opening 18 of the main body 12, and the engaging portion 20 is inserted into the receiving portion so that the engaging portion 20 of the main body 12 is turned from the side of the receiving portion. Accordingly, the lid 14 is attached to the main body 12.

  Such a merger 10 is installed under the floor 110 of the building as described above. Specifically, as shown in FIG. 1, the joining 10 is piped on the foundation 114 near the foundation wall 112. When piping the confluence 10, one end of a bent joint 118 such as a 90 ° elbow is connected to the end of the drainage main pipe 116 that passes through the foundation 114, and the outflow pipe portion 24 is connected to the other end of the bent joint 118. The junction 10 and the drain main pipe 116 are connected by adhesive bonding or the like. The drainage main pipe 116 is a pipe that penetrates the foundation 114 and is connected to a sewage pipe (not shown) and the like, and a straight pipe made of synthetic resin or the like or a flexible pipe is used.

  The drainage branch pipe 120 is connected to the central inflow pipe section 26 and the oblique inflow pipe section 30 by adhesive bonding or the like. The drainage branch pipe 120 is a pipe connected to a residential device (not shown) such as a toilet or a bath, and a straight pipe made of synthetic resin or the like or a flexible pipe is used. In this embodiment, the confluence 10 has one central inflow pipe portion 26 and two oblique inflow pipe portions 30, so that three drainage branch pipes 120 are connected to the confluence 10. For example, in the case where the drainage branch pipe 120 is connected to each of the two oblique inflow pipe portions 30 and the drainage branch pipe 120 is not connected to the central inflow pipe portion 26, the locking groove 28 is used for the center. A cap (not shown) is attached to the inflow pipe portion 26 to prevent drainage from flowing out to the outside.

  When the merge 10 is installed in this way, the drainage discharged from the housing equipment passes through the drainage branch pipe 120 and flows into the main body 12 from the inflow pipe portions 26 and 30. When a relatively small amount of wastewater flows into the main body 12, the wastewater changes its flow direction downward by its own weight, smoothly flows out from the outflow pipe portion 24, and is discharged to the sewer pipe or the like through the drainage main pipe 116. The On the other hand, when a large amount of wastewater flows into the main body 12 at once, the wastewater flows downward and flows out from the outflow pipe portion 24 and also flows in the lateral direction. The drainage flowing in the lateral direction goes to the overflow prevention unit 32 provided on the downstream side in the inflow direction of the drainage. At this time, the two oblique inflow pipe portions 30 are configured such that the mutual pipe axes intersect with each other at an angle of about 90 ° so that the mutual inlets 30a do not face each other from the front, and the position a and the range. By shifting x by a predetermined dimension, the inflow port 30a of the other oblique inflow pipe portion 30 is prevented from entering the range x. For this reason, the waste water flowing in the lateral direction is prevented from going directly to the inside of the other oblique inflow pipe portion 30. Then, the wastewater that has flowed into the overflow prevention unit 32 collides with a collision plane 34 provided at a position facing the inflow port 30a, and thus the flow velocity decreases. The drainage whose flow velocity has decreased flows along the inner surface of the overflow prevention part 32 formed in a substantially rectangular shape with rounded corners, and the momentum of turning around in the lateral direction is further reduced in the process. As it is, the drainage flows in the longitudinal direction in the main body 12 along the inner surface of the connecting portion 50 extending straight forward. As described above, the momentum of drainage from one oblique inflow pipe portion 30 to the inside of the other oblique inflow pipe portion 30 is reduced, and overflow is prevented. During this time, a part of the drainage flowing laterally in the main body 12 is temporarily retained in the overflow prevention part 32, that is, in the protrusion 36 (protrusion space). The waste water temporarily staying in the protruding space changes its flow direction downward due to gravity, and is discharged from the outflow pipe portion 24 with a time difference from the previous waste water. In other words, when a large amount of wastewater flows into the main body 12 at a time, not only the passages directly downward from the inflow pipe portions 26 and 30 but also the protrusions 36 from the inflow pipe portions 26 and 30. Then, drainage can be discharged using a downward path. Therefore, since the drainage does not flow into the outflow pipe portion 24 at a time, the outflow pipe portion 24 is not blocked and the full pipe state in the main body 12 can be prevented.

  Therefore, according to this embodiment, since the overflow prevention portion 32 is further provided on the side wall 16 of the main body 12, the overflow of the drainage from one oblique inflow pipe portion 30 to the other oblique inflow pipe portion 30 is appropriately performed. The drainage is smoothly discharged from the outflow pipe portion 24. In addition, since a partition is not provided in the main body 12, a wider flow path can be secured in the main body 12.

  In addition, since the inner surface of the portion near the boundary with the oblique inflow pipe portion 30 in the connecting portion 50, that is, the overflow prevention portion 32, is not directed toward the inside of the oblique inflow pipe portion 30, Even when vigorous waste water flows into the main body 12 from the inflow pipe portion 30, the flow direction of the waste water is different from the direction toward the other oblique inflow pipe portion 30 due to the inner surface of the overflow prevention portion 32. Can change direction. Or the momentum of the waste_water | drain toward the other diagonal inflow pipe part 30 is reduced. Therefore, overflow of drainage from one oblique inflow pipe portion 30 to the other oblique inflow pipe portion 30 is appropriately prevented.

  Furthermore, since the inner side surface of the overflow prevention part 32 is formed in a substantially rectangular shape, that is, in a non-arc shape, the momentum of the water that wraps around in the lateral direction is reduced, and the overflow of the drainage is prevented more appropriately.

  Furthermore, since the protruding portion 36 is provided in the overflow prevention portion 32, when the vigorous wastewater flows into the main body 12 from the oblique inflow pipe portion 30, a part of the drainage is within the protruding portion 36 (projecting space). ) Temporarily stay. This reduces the drainage load in the outflow direction. That is, since the drainage does not flow into the outflow pipe 24 at a time, the drainage flows smoothly without the outflow pipe 24 being blocked. Therefore, drainage performance is further improved.

  Further, since the collision plane 34 where the drainage collides is formed in the overflow prevention part 32 at a position facing the inflow port 30a, when the drainage with a momentum flows into the main body 12 from the oblique inflow pipe part 30, the drainage Collides with the collision plane 34 formed in the overflow prevention part 32, and the flow velocity falls. Thereby, the momentum of the water which goes around in the lateral direction is reduced, and the overflow of the drainage is prevented.

  Furthermore, the apex position “a” which is the most upstream side of the boundary line between the main body 12 and the oblique inflow pipe portion 30, that is, the opposite side in the protruding direction, extends the tube wall of the other oblique inflow pipe portion 30. The extension line and the main body 12 are located on the opposite side of the overflow prevention part 32 from the position where the extension line intersects. That is, assuming that the other oblique inflow pipe portion 30 is linearly extended into the main body as it is, the inlet of the other oblique inflow pipe portion 30 is within the range x of the extended pipeline. 30a was prevented from entering. Thereby, it is prevented that the waste_water | drain from one diagonal inflow pipe part 30 goes directly to the inside of the other diagonal inflow pipe part 30, and can prevent the overflow of waste_water | drain more appropriately.

  Furthermore, since a partition body is not provided in the main body 12, it is necessary to increase the pipe diameter of the main body 12 in order to secure a drainage passage in a portion partitioned by the partition body and prevent a full pipe state. The junction 10 can be reduced in size.

  In the above-described embodiment, the overflow preventing part 32 having a substantially rectangular shape is shown as an example of the overflow preventing part 32, but the shape of the overflow preventing part 32 is not limited to this. Various shapes such as a substantially pentagonal shape, a substantially triangular shape, a substantially trapezoidal shape, and a substantially arcuate shape are conceivable as the shape of the overflow prevention part 32.

  FIG. 11 shows another embodiment of the merge 10. The merged mast 10 shown in FIG. 11 is different from the merged mushroom 10 described above in that the overflow prevention part 32 is formed in a substantially pentagonal shape in plan view. Since the other configurations are the same, the same reference numerals are used for overlapping portions, and the description thereof is omitted or simplified.

  In the embodiment shown in FIG. 11, the main body 12 is formed by injection molding or the like, and includes the side wall 16 and the overflow prevention portion 32.

  The side wall 16 is formed in a substantially cylindrical shape, and an upper end opening 18 is formed in the upper part of the side wall 16. The lid 14 is detachably connected to the upper end opening 18.

  Further, a cylindrical central inflow pipe portion 26 having a receiving structure is provided on the side wall 16 of the main body 12 so as to protrude laterally. The inner diameter of the central inflow pipe portion 26 is 90 mm, for example. A locking groove 28 is provided at the outer surface end of the central inflow pipe portion 26.

  On both sides of the central inflow pipe portion 28, two slanted inflow pipe portions 30 having a receiving structure are provided so as to protrude obliquely forward. The inner diameter of the oblique inflow pipe portion 30 is 90 mm, for example. A locking groove 28 is provided at the outer surface end of the oblique inflow pipe portion 30. The tube axes of the two oblique inflow pipe portions 30 intersect each other at an angle of about 90 °, and the tube axes of the oblique inflow pipe portions 30 are at an angle of about 45 ° with respect to the tube axis of the central inflow pipe portion 26. Intersect. That is, the two oblique inlet pipe portions 30 are configured such that the mutual inlets 30a do not face each other from the front. Thereby, it is prevented that drainage goes directly from the one oblique inflow pipe part 30 to the inside of the other oblique inflow pipe part 30.

  Between the two oblique inflow pipe portions 30 on the back side of the side wall 16, that is, on the downstream side in the inflow direction of drainage from the oblique inflow pipe portion 30, an overflow prevention portion 32 that is formed integrally with the side wall 16 is provided. .

  The overflow prevention part 32 includes a back surface part 48, a connecting part 50, and an upper surface part 52, and is formed in a substantially pentagonal shape in plan view. By forming the inner surface of the overflow prevention part 32 in a non-arc shape, the momentum of the water that goes around the overflow prevention part 32 in the lateral direction is reduced. Due to the overflow prevention part 32 and the side wall 16, the main body 12 is formed into a substantially bullet-like shape in plan view. Specifically, the back surface portion 48 is formed in a plate shape whose central portion in the width direction is bent at an angle of about 90 °, and is provided at the back surface position of the main body 12 more and more. Inner side surfaces of both end portions of the back surface portion 48 sandwiching the bent portion are formed in a planar shape on the downstream side in the inflow direction of the oblique inflow pipe portion 30 and become a collision plane 34 on which the drainage from each oblique inflow tube portion 30 collides. In this embodiment, the collision plane 34 is provided so as to intersect perpendicularly to the inflow direction of the drainage from each oblique inflow pipe portion 30. When vigorous waste water flows into the main body 12 from the oblique inflow pipe portion 30, the waste water collides perpendicularly to the collision plane 34, and the flow velocity is greatly reduced. The connecting portion 50 is formed in a flat plate shape that is bent from both end edges of the back surface portion 48 and extends forward, and connects the back surface portion 48 and the side wall 16. The inner surface of the connection portion 50, that is, the portion in the vicinity of the boundary between the overflow prevention portion 32 and the oblique inflow pipe portion 30 is formed so as to extend straight forward, and does not face the inside of the oblique inflow pipe portion 30. To be. Thus, even when vigorous waste water flows into the main body 12 from one oblique inflow pipe portion 30, the flow direction of the waste water is changed to a direction different from the direction toward the other oblique inflow pipe portion 30. . Or the momentum of the waste_water | drain toward the other diagonal inflow pipe part 30 is reduced. The upper surface portion 52 is formed in a flat plate shape, and is provided so as to cover the back surface portion 48 and the connecting portion 50.

  Moreover, the overflow prevention part 32 has a protruding part 36 that protrudes outward (rearward) from the rear end 16 a of the side wall 16. The protruding length of the protruding portion 36, that is, the distance from the rear end 16a of the side wall 16 to the rear end 48a of the back surface portion 48 is, for example, 60 mm. A projecting space is formed inside the projecting portion 36, and when a vigorous wastewater flows into the main body 12 from the oblique inflow pipe portion 30, a part of the drainage is provided in the overflow prevention portion 32. It stays temporarily in the part 36 (projection space). As a result, the drainage is prevented from flowing into the outflow pipe 24 at a time, and the drainage flows smoothly without the outflow pipe 24 being blocked.

  The predetermined dimension for shifting the inflow port 30a between one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 is defined in the same manner as in the above-described embodiment described with reference to FIG.

  In such a confluence 10, when a large amount of wastewater flows into the main body 12 at once, the wastewater flows downward and flows out from the outflow pipe portion 24 and also flows in the lateral direction. The drainage flowing in the lateral direction goes to the overflow prevention unit 32 provided on the downstream side in the inflow direction of the drainage. At this time, since the inlet 30a between the one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 is shifted by a predetermined dimension, the wastewater flowing in the lateral direction is discharged from the other oblique inflow pipe portion 30. Directing to the inside is prevented. Then, the waste water that has flowed into the overflow prevention section 32 collides perpendicularly with a collision plane 34 provided so as to intersect perpendicularly with respect to the inflow direction at a position facing the inflow port 30a, and the flow velocity is greatly reduced. . The drainage with the reduced flow velocity flows along the inner side surface of the overflow prevention part 32 formed in a substantially pentagonal shape, and the momentum that goes around in the lateral direction in the process is further reduced. As it is, the drainage flows in the longitudinal direction in the main body 12 along the inner surface of the connecting portion 50 extending straight forward. As described above, the momentum of drainage toward the inside of the other oblique inflow pipe portion 30 is reduced, and overflow is prevented. During this time, a part of the drainage flowing laterally in the main body 12 is temporarily retained in the overflow prevention part 32, that is, in the protrusion 36 (protrusion space), and the outflow pipe with a time difference from the previous drainage. It is discharged from the section 24. Therefore, since the drainage does not flow into the outflow pipe portion 24 at a time, the outflow pipe portion 24 is not blocked and the full pipe state in the main body 12 can be prevented.

  In the embodiment shown in FIG. 11 as well, the overflow preventing portion 32 is provided on the side wall 16 of the main body 12 in the same manner as in each of the above-described embodiments, so that one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 are provided. Overflow of the wastewater into the water is appropriately prevented, and the wastewater is smoothly discharged from the outflow pipe portion 24. In addition, since a partition is not provided in the main body 12, a wider flow path can be secured in the main body 12.

  In addition, assuming that the other oblique inflow pipe portion 30 is linearly extended into the main body as it is, the inlet of the other oblique inflow pipe portion 30 is within the range x of the extended pipeline. Since the predetermined dimension is shifted so that 30a does not enter, the drainage from one oblique inflow pipe part 30 is prevented from going directly to the inside of the other oblique inflow pipe part 30, and the overflow of the drainage is more appropriate. Can be prevented.

  Furthermore, in the embodiment shown in FIG. 11, the collision plane 34 is formed in the overflow prevention portion 32 at a position facing the inlet 30a so as to intersect perpendicularly to the inflow direction of the drainage from each oblique inflow pipe portion 30. Accordingly, when vigorous wastewater flows into the main body 12 from the outflow pipe portion 24, the wastewater collides perpendicularly to the collision plane 34 formed in the overflow prevention portion 32, and the flow velocity is greatly reduced. . Thereby, the momentum of the water which goes around in the lateral direction is reduced, and the overflow of the drainage is more appropriately prevented.

  In each of the above-described embodiments, the connecting portion 50 is provided between the overflow prevention portion 32 and the side wall 16, but the connecting portion 50 may not be provided. For example, as shown in FIG. 12, the back surface portion 48 and the side wall 16 may be directly connected.

  In the embodiment shown in FIG. 12, the overflow prevention portion 32 includes a back surface portion 48 and an upper surface portion 52, and is formed in a substantially triangular shape in plan view. By forming the inner side surface of the overflow prevention portion 32 in a non-arc shape, the momentum of the drainage that goes around the overflow prevention portion 32 in the lateral direction is reduced. Due to the overflow prevention part 32 and the side wall 16, the main body 12 is formed into a substantially bullet-like shape in plan view. Specifically, the back surface portion 48 is formed in a plate shape that bends at an angle of approximately 90 °, and is provided at the back surface position of the main body 12. Inner side surfaces of both end portions of the back surface portion 48 sandwiching the bent portion are formed in a planar shape on the downstream side in the inflow direction of the oblique inflow pipe portion 30 and become a collision plane 34 on which the drainage from each oblique inflow tube portion 30 collides. The collision plane 34 is provided so as to intersect perpendicularly to the inflow direction of the drainage from each oblique inflow pipe portion 30. When vigorous wastewater flows into the main body 12 from the oblique inflow pipe portion 30, the wastewater collides perpendicularly with the collision plane 34, and the flow velocity is greatly reduced. Both end edges of the back surface portion 48 are directly connected to the side wall 16, and the inner surface is formed so as to go straight to the inside of each oblique inflow pipe portion 30. The upper surface part 52 is formed in a flat plate shape so as to cover the upper part of the back surface part 48.

  Moreover, the overflow prevention part 32 has a protruding part 36 that protrudes outward (rearward) from the rear end 16 a of the side wall 16. The protruding length of the protruding portion 36, that is, the distance from the rear end 16a of the side wall 16 to the rear end 48a of the back surface portion 48 is, for example, 55 mm.

  The predetermined dimension for shifting the inflow port 30a between one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 is defined in the same manner as in the above-described embodiment described with reference to FIG.

  Also in the embodiment shown in FIG. 12, since the overflow preventing portion 32 is provided on the side wall 16 of the main body 12 in the same manner as in each of the above-described embodiments, the one oblique inflow tube portion 30 and the other oblique inflow tube portion 30 are provided. Overflow of the wastewater into the water is appropriately prevented, and the wastewater is smoothly discharged from the outflow pipe portion 24.

  In addition, assuming that the other oblique inflow pipe portion 30 is linearly extended into the main body as it is, the inlet of the other oblique inflow pipe portion 30 is within the range x of the extended pipeline. Since the predetermined dimension is shifted so that 30a does not enter, the drainage from one oblique inflow pipe part 30 is prevented from going directly to the inside of the other oblique inflow pipe part 30, and the overflow of the drainage is more appropriate. Can be prevented.

  Furthermore, in the embodiment shown in FIG. 11, the collision plane 34 is formed in the overflow prevention portion 32 at a position facing the inlet 30a so as to intersect perpendicularly to the inflow direction of the drainage from each oblique inflow pipe portion 30. Accordingly, when vigorous wastewater flows into the main body 12 from the outflow pipe portion 24, the wastewater collides perpendicularly to the collision plane 34 formed in the overflow prevention portion 32, and the flow velocity is greatly reduced. . Thereby, the momentum of the water which goes around in the lateral direction is reduced, and the overflow of the drainage is more appropriately prevented.

  By providing the overflow prevention portion 32 as described above, both end edges of the back surface portion 48, that is, the inner side surface of the overflow prevention portion 32 in the vicinity of the boundary with the oblique inflow tube portion 30, Even when it is made to go inside, overflow is properly prevented.

  Subsequently, FIG. 13 shows still another embodiment of the confluence 10.

  In the embodiment shown in FIG. 13, the overflow prevention portion 32 includes a back surface portion 48, a first connection portion 50 a, a second connection portion b, and an upper surface portion 52, and is formed in a substantially trapezoidal shape in plan view. By forming the inner side surface of the overflow prevention portion 32 in a non-arc shape, the momentum of the drainage that goes around the overflow prevention portion 32 in the lateral direction is reduced. Specifically, the back surface portion 48 is formed in a flat plate shape and is provided at the back surface position of the main body 12. The length of the back surface 48 in the width direction is set slightly smaller than the inner diameter of the side wall 16. The inner side surface of the back surface portion 48 is formed in a planar shape on the downstream side in the inflow direction of the oblique inflow pipe portion 30 and becomes a collision plane 34 on which the drainage from each oblique inflow pipe portion 30 collides. When vigorous wastewater flows into the main body 12 from the oblique inflow pipe portion 30, the wastewater collides with the collision plane 34, and the flow velocity decreases. The first connecting portion 50a is formed in a flat plate shape that bends from both end edges of the back surface portion 48 and extends slightly forward and inclined outward. The inner surface of the first connecting portion is not directed toward the inside of the oblique inflow pipe portion 30. Thus, even when vigorous waste water flows into the main body 12 from one oblique inflow pipe portion 30, the flow direction of the waste water is changed to a direction different from the direction toward the other oblique inflow pipe portion 30. . Or the momentum of the waste_water | drain toward the other diagonal inflow pipe part 30 is reduced. The second connecting portion is formed on a flat plate that is bent outward from the front edge of the first connecting portion and goes straight to the inside of the oblique inflow pipe portion 30. The back part 48 and the side wall 16 are connected through the first connecting part 50a and the second connecting part 50b. The upper surface portion 52 is formed in a flat plate shape, and is provided so as to cover the back surface portion 48, the first connection portion 50a, and the second connection portion 50b.

  Moreover, the overflow prevention part 32 has a protruding part 36 that protrudes outward (rearward) from the rear end 16 a of the side wall 16. The protruding length of the protruding portion 36, that is, the distance from the rear end 16a of the side wall 16 to the back surface portion 48 is, for example, 50 mm.

  The predetermined dimension for shifting the inflow port 30a between one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 is defined in the same manner as in the above-described embodiment described with reference to FIG.

  Also in the embodiment shown in FIG. 13, since the overflow preventing portion 32 is provided on the side wall 16 of the main body 12 in the same manner as the above-described embodiments, the one oblique inflow tube portion 30 and the other oblique inflow tube portion 30 are provided. Overflow of the wastewater into the water is appropriately prevented, and the wastewater is smoothly discharged from the outflow pipe portion 24.

  In addition, assuming that the other oblique inflow pipe portion 30 is linearly extended into the main body as it is, the inlet of the other oblique inflow pipe portion 30 is within the range x of the extended pipeline. Since the predetermined dimension is shifted so that 30a does not enter, the drainage from one oblique inflow pipe part 30 is prevented from going directly into the other oblique inflow pipe part 30, and the overflow of the drainage is appropriately prevented. Can be prevented.

  In each of the embodiments described above, the collision plane 34 is provided in the overflow prevention section 32, but the collision plane 34 is not necessarily provided. For example, as shown in FIG. 14, the inner side surface of the back surface portion 48 of the overflow prevention portion 32 may be formed in a substantially arc shape.

  In the embodiment shown in FIG. 14, the overflow prevention portion 32 includes a back surface portion 48, a connecting portion 50, and an upper surface portion 52, and is formed in a substantially arc shape that is long in the front-rear direction (depth direction) in plan view. While the overflow prevention part 32 is formed in a substantially arc shape, the momentum of the water that goes around in the overflow prevention part 32 in the lateral direction is reduced by forming the overflow prevention part 32 long in the depth direction. Due to the overflow prevention part 32 and the side wall 16, the main body 12 has a substantially elliptical shape in plan view. Specifically, the back surface portion 48 is formed in a curved plate shape that is curved in an arc shape, and is provided at the back surface position of the main body 12. The connecting portion 50 is formed in a flat plate shape extending forward from both end edges of the back surface portion 48, and connects the back surface portion 48 and the side wall 16. The inner surface of the connection portion 50, that is, the portion in the vicinity of the boundary with the oblique inflow pipe portion 30 of the overflow prevention portion 32 is formed so as to extend straight forward, and the inner side surface is the interior of the oblique inflow pipe portion 30. Is not going to go. Thus, even when vigorous waste water flows into the main body 12 from one oblique inflow pipe portion 30, the flow direction of the waste water is changed to a direction different from the direction toward the other oblique inflow pipe portion 30. . Or the momentum of the waste_water | drain toward the other diagonal inflow pipe part 30 is reduced. The upper surface portion 52 is formed in a flat plate shape, and is provided so as to cover the back surface portion 48 and the connecting portion 50.

  Moreover, the overflow prevention part 32 has a protruding part 36 that protrudes outward (rearward) from the rear end 16 a of the side wall 16. The protruding length of the protruding portion 36, that is, the distance from the rear end 16a of the side wall 16 to the rear end 48a of the back surface portion 48 is, for example, 55 mm.

  The predetermined dimension for shifting the inflow port 30a between one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 is defined in the same manner as in the above-described embodiment described with reference to FIG.

  In the embodiment shown in FIG. 14 as well, the overflow prevention portion 32 is provided on the side wall 16 of the main body 12 in the same manner as in the above-described embodiments, so that the one oblique inflow pipe portion 30 and the other oblique inflow pipe portion 30 are provided. Overflow of the wastewater into the water is appropriately prevented, and the wastewater is smoothly discharged from the outflow pipe portion 24.

  In addition, assuming that the other oblique inflow pipe portion 30 is linearly extended into the main body as it is, the inlet of the other oblique inflow pipe portion 30 is within the range x of the extended pipeline. Since the predetermined dimension is shifted so that 30a does not enter, the drainage from one oblique inflow pipe part 30 is prevented from going directly into the other oblique inflow pipe part 30, and the overflow of the drainage is appropriately prevented. Can be prevented.

  In each of the above-described embodiments, one central inflow pipe portion 26 is provided between two oblique inflow pipe portions 30, but the present invention is not limited to this, and two or more central inflow pipe portions are provided. 26 may be provided, or the central inflow pipe portion 26 may not be provided.

  Further, in each of the above-described embodiments, the tube axes of the two oblique inflow pipe portions 30 intersect each other at an angle of approximately 90 °, but the present invention is not limited to this as long as the angle is less than 180 °. In short, it is only necessary that the inlets 30a of the oblique inflow pipe portion 30 do not face each other from the front.

  Further, in each of the above-described embodiments, the outflow pipe portion 24 is provided so as to extend in the vertical direction from the lower side of the center portion of the bottom wall portion 22, but as shown in FIG. For example, you may provide so that it may incline about 45 degrees with respect to a perpendicular direction.

  The lid 14 may be provided with a vent hole. In that case, a ventilation valve formed separately from the lid 14 is prepared and attached to the inside of the inner cylindrical portion 38 of the lid 14.

  Furthermore, in the above-described embodiment, the merging mast 10 is dropped, but it may be a merging that drains the drainage to the side (lateral direction). In this case, for example, the outflow pipe portion 24 may be provided at a position below the overflow prevention portion 32 and lower than the height position where the inflow pipe portions 26 and 30 are provided. However, in order to ensure the height difference between the inflow pipe portions 26 and 30 and the outflow pipe portion 24, it is necessary to increase the height of the main body 12 as compared with the case of dropping.

  Note that the specific numerical values of the dimensions described above are merely examples, and can be appropriately changed as necessary.

DESCRIPTION OF SYMBOLS 10 ... Merging 12 ... Mass body 14 ... Lid 16 ... Side wall 24 ... Outflow pipe part 26 ... Central inflow pipe part 30 ... Inclined inflow pipe part 32 ... Overflow prevention part 34 ... Collision plane 36 ... Protrusion part

Claims (6)

It is a confluence that is installed under the floor of the building,
Increasingly body with side walls,
Two inflow pipe sections that allow the drainage to flow in from the lateral direction of the main body, where the tube axes of each other intersect at less than 180 degrees,
One outflow pipe portion for draining the waste water that has flowed into the main body downward, and a crossover provided on the side wall of the main body between the two inflow pipe portions in the inflow direction of the two inflow pipe portions. It has a flow prevention part and joins.   The merger according to claim 1, wherein the overflow prevention portion includes an inner surface whose inward direction does not face the inside of the other inflow pipe portion.   The merge according to claim 2, wherein a distance from an axial center of the outflow pipe portion to an inner surface of the overflow prevention portion is not uniform in a plan view.   The merger according to claim 2 or 3, wherein the overflow prevention part includes a protruding part protruding outward from a side wall of the main body.   The said overflow prevention part joins in any one of Claim 1 thru | or 4 containing a collision plane.   Of the boundary line from which the one of the inflow pipe portions protrudes from the main body, the vertex position that is closest to the overflow prevention portion side is an extension line that extends the tube wall of the other inflow pipe portion toward the main body. The merging according to any one of claims 1 to 5, wherein the merging position is on the opposite side of the overflow prevention portion from the position where it intersects the main body.

Images