JP6405280B2 - Drains and drains with it - Google Patents

Description

  The present invention relates to a drainage muffler and a drainage pipe provided with the same.

  Drainage drains that drain the wastewater from the building to the sewage pipes are provided with drainage drains for easy inspection. The drainage pipe includes a main pipe that discharges the wastewater toward the sewer pipe and a branch pipe that guides the drainage from the building toward the main pipe. The drainage basin includes an inflow side and an outflow side connection port connected to the main pipe, a branch pipe connection port to which the branch pipe is connected, and an inspection port that opens upward. For example, in the residential land, the drainage pipe is arranged on the side of the foundation of the building so that the main pipe is parallel to the foundation of the building. Hereinafter, the dimension of the drain pipe in the direction perpendicular to the direction in which the main pipe extends in plan view is referred to as “the width of the drain pipe”.

  The width of the drainage pipe is preferably small so that it can be installed in a narrow area. Patent Document 1 discloses a drainage drain in which a branch pipe connection port is disposed obliquely above an inflow side connection port, and the inflow side connection port and the branch pipe connection port are opened in the same direction. By using such a drainage basin, a portion of the branch pipe connected to the drainage basin can be arranged in parallel with the main pipe, and the main pipe can be placed close to the foundation. Therefore, it becomes possible to install the drain pipe in a narrow area.

  However, in the conventional drainage basin, a part of the drainage bulges out in the width direction from the inspection port in a plan view, so it is difficult to further reduce the width of the drainage pipe. Patent Document 2 proposes a drainage basin in which a branch pipe connection port is arranged directly above an inflow side connection port. According to this drain, the width of the drain pipe can be further reduced, and the drain pipe can be installed in a narrower space.

Utility Model Registration No. 2554325 JP-A-7-82787

  However, in the drainage basin disclosed in Patent Document 2, the vertical dimension becomes large. Therefore, there is a problem that the ground must be dug deeper during the construction of the drainage, and the construction takes time and effort.

  The present invention has been made in view of such points, and an object thereof is to include an inflow side and an outflow side connection port connected to the main pipe and a branch pipe connection port to which the branch pipe is connected, and the width and the vertical direction. The dimensions are to provide a small drainage.

  The drainage basin according to the present invention has a straight tubular horizontal tube portion in which an inflow side connection port is formed at one end and an outflow side connection port is formed at the other end, and an inspection port opened upward. A sub-cylinder portion having a vertical tube portion extending upward from the portion and a branch pipe connection port opening in the same direction as the opening direction of the inflow side connection port, and extending from the vertical tube portion in the opening direction of the inflow side connection port And comprising. When the opening direction of the inflow side connection port is on the left and the opening direction of the outflow side connection port is on the right side, the branch pipe connection is obtained when the vertical tube portion is viewed from the left side to the right side. The mouth is arranged obliquely above the inflow side connection port, and the front ends of the horizontal tube portion and the sub tube portion are the same as the front end of the inspection port or behind the front end of the inspection port in the front-rear direction. The rear end of the horizontal cylinder part and the sub cylinder part are located at the same position as the rear end of the inspection port or forward of the rear end of the inspection port.

  According to the drainage basin, with respect to the front-rear direction, the entire horizontal cylinder part and sub-cylinder part are located between the front end and the rear end of the inspection port. Therefore, the horizontal tube portion and the sub tube portion do not protrude forward and rearward from the inspection port. Therefore, the width of the drainage can be reduced. In addition, since the branch pipe connection port is arranged obliquely above the inflow side connection port, the vertical dimension of the drainage is larger than when the branch pipe connection port is arranged directly above the inflow side connection port. Can be reduced.

  According to a preferred aspect of the present invention, the sub-cylinder part protrudes rightward from a left end of a portion located inside the inspection port in a plan view, and the inside of the sub-cylinder part and the inside of the horizontal cylinder part, A partition wall for partially partitioning is provided.

  According to the drainage basin, since the branch pipe connection port and the inflow side connection port are close to each other, there is a concern about the backflow from the branch pipe connection port to the inflow side connection port. However, according to the said aspect, the partition wall protruded rightward from the left end of the part located inside a check port in planar view is provided. By this partition wall, the back flow from the branch pipe connection port to the inflow side connection port is suppressed. Accordingly, it is possible to reduce the width of the drainage and the vertical dimension while suppressing the backflow from the branch pipe connection port to the inflow side connection port.

  According to another preferable aspect of the present invention, the wall surface of the partition wall that is closer to the axis of the sub-cylinder part is formed such that the inclination angle with respect to a horizontal plane increases as the distance from the axis of the sub-cylinder part increases. ing.

  According to the said aspect, since the inclination-angle of the said wall surface of a partition wall becomes large, so that it distances from the axis line of a subcylinder part, the waste_water | drain in a subcylinder part does not flow into a horizontal cylinder part over a partition wall. Therefore, the backflow from the branch pipe connection port to the inflow side connection port can be effectively suppressed.

  According to another preferred aspect of the present invention, the wall surface of the partition wall that is closer to the axis of the sub-cylinder part is formed in an arc surface centered on the axis of the sub-cylinder part.

  According to the said aspect, the waste_water | drain which flows in from a branch pipe connection port can be distribute | circulated smoothly in a subcylinder part.

  According to another preferable aspect of the present invention, in a plan view, the distance between the partition wall and the axis of the horizontal cylinder part is the distance between the right end of the lower half of the sub cylinder part and the axis of the horizontal cylinder part. Shorter than distance.

  According to the said aspect, since the partition wall is arrange | positioned in the position close | similar to the axis line of a horizontal cylinder part, the width | variety of the flow path in a subcylinder part can fully be ensured, suppressing the width | variety of drainage. Since the waste water flowing from the branch pipe connection port can be smoothly flowed toward the outflow side connection port, the backflow from the branch pipe connection port to the inflow side connection port can be effectively suppressed.

  According to another preferable aspect of the present invention, the lower half portion of the sub-cylinder portion is located inside the inspection port and connects the right end of the partition wall and the right end of the lower half portion in plan view. It has a lower edge, and the lower edge is formed in a curved shape such that the angle of inclination with respect to the axis of the horizontal tube portion decreases toward the right in plan view.

  According to the said aspect, the waste_water | drain which flowed in from the branch pipe connection port flows in into a horizontal cylinder part from the said lower edge, after passing on the lower half part of a sub cylinder part. Since the lower edge is formed in a curved shape as described above, the drainage that passes through the left part of the lower edge close to the partition wall becomes easier to flow in the axial direction. Therefore, the backflow from the branch pipe connection port to the inflow side connection port can be effectively suppressed.

  According to another preferred aspect of the present invention, the vertical cylinder portion has a vertical wall that is located inside the inspection port and extends upward in a plan view, and the vertical wall is the sub-wall in the plan view. From the side opposite to the axis of the horizontal cylinder with respect to the axis of the cylinder, it extends in a direction inclined with respect to the axis of the auxiliary cylinder so as to approach the axis of the horizontal cylinder as it goes to the right. In the plan view, the lower edge and the vertical wall intersect inside the inspection port.

  According to the said aspect, even if drainage flows vigorously from the branch pipe connection port, the drainage hits the vertical wall and flows into the horizontal tube portion. The drainage is smoothly guided into the horizontal cylinder by the vertical wall. In a plan view, the lower edge and the vertical wall intersect at the inside of the inspection port. Therefore, the drainage in the sub-cylinder part is guided into the horizontal cylinder part at a more upstream position.

  According to another preferred aspect of the present invention, the center of the branch pipe connection port is located above the upper end of the inflow side connection port.

  According to the above aspect, a sufficient height difference between the center of the branch pipe connection port and the center of the inflow side connection port can be ensured, so that the backflow from the branch pipe connection port to the inflow side connection port is effectively suppressed. can do.

  The drainage pipe according to the present invention includes a drain main, a first main pipe connected to the inflow side connection port of the drainage mass, and a second main pipe connected to the outflow side connection port of the drainage mass. And a branch pipe connected to the branch pipe connection port of the drainage basin. In a plan view, the branch pipe extends from the branch pipe connection port in the opening direction of the branch pipe connection port, and is opposite to the side on which the axis of the sub-tube portion is located with respect to the axis of the horizontal tube portion. It has a bent portion extending toward the side.

  According to the drain pipe, the width of the drain pipe is small, so that the width of the drain pipe can be reduced. Therefore, it can be installed in a narrow area. Moreover, since the branch pipe has the said bending part, the waste_water | drain in a branch pipe flows, turning around so that the axis line of a horizontal cylinder part may be straddled in planar view. Thereby, drainage flows smoothly into the sub cylinder through the branch pipe connection port. Further, since the drainage flows so as to go around the outside of the partition wall, the drainage hardly gets over the partition wall, and the backflow from the branch pipe connection port to the inflow side connection port can be effectively suppressed.

  According to another preferable aspect of the present invention, in a plan view, a foundation of a building is provided on a side opposite to a side where the axis of the sub-cylinder part is located with respect to the axis of the horizontal cylinder part, and the first The main pipe and the second main pipe are arranged in parallel with the foundation, and the branch pipe passes through the foundation.

  According to the said aspect, a drain pipe can be installed compactly in the vicinity of the foundation of a building.

  ADVANTAGE OF THE INVENTION According to this invention, it can provide the drainage drain which is provided with the inflow side and the outflow side connection port connected to a main pipe, and the branch pipe connection port to which a branch pipe is connected, and whose width and the dimension of an up-down direction are small. .

It is a top view of the drain pipe line concerning one embodiment of the present invention. It is a perspective view of the drainage basin concerning one embodiment of the present invention. It is a front view of the said drainage basin. It is a top view of the said drainage basin. It is a left view of the said drainage basin. It is a right view of the said drainage basin. It is the VII-VII sectional view taken on the line of FIG. It is a perspective view of the above-mentioned drainage basin. It is the IX-IX sectional view taken on the line of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a drain pipe 1 according to an embodiment of the present invention. The drainage pipe 1 is a pipe that discharges drainage discharged from a building (not shown) to a sewer pipe (not shown), and is disposed in the vicinity of the foundation 2 of the building. The drain pipe 1 is buried in the ground. In this embodiment, the drainage pipe 1 includes a plurality of main pipes 3, 4, 5, a plurality of branch pipes 6, 7, and a plurality of drainage tanks 10, 10A. Since the drainage basin 10 and the drainage basin 10A have the same configuration, the drainage basin 10 will be described below, and the description of the drainage basin 10A will be omitted. In the following description, the configuration of the drainage trough 10 will be described first, and then the configuration of the drainage pipe 1 will be described.

  In the following description, directions represented by arrows F, Re, L, and R in FIG. 2 are assumed to be front, rear, left, and right, respectively. However, these directions are only directions determined for convenience of explanation, and do not limit the installation mode of the drainage basin 10 at all. 3, 4, 5, and 6 are a front view, a plan view, a left side view, and a right side view, respectively, of the drain 10.

  As shown in FIG. 2, the drainage basin 10 includes a horizontal cylinder part 20 extending in the left-right direction, a vertical cylinder part 30 extending upward from the horizontal cylinder part 20, and a sub-cylinder part 40 extending leftward from the vertical cylinder part 30. It has. In this embodiment, the horizontal cylinder part 20, the vertical cylinder part 30, and the sub cylinder part 40 are integrally molded with resin. However, the horizontal cylinder part 20, the vertical cylinder part 30, and the auxiliary cylinder part 40 may be configured by combining a plurality of members.

  The horizontal cylinder portion 20 is formed in a straight tube extending straight. An inflow side connection port 21 to which the main pipe 3 is connected is formed at the left end of the horizontal cylinder part 20, and an outflow side connection port 22 to which the main pipe 4 is connected is formed at the right end of the horizontal cylinder part 20. The inflow side connection port 21 opens to the left, and the outflow side connection port 22 opens to the right. In the present embodiment, the inflow side connection port 21 is a receiving port into which the main pipe 3 is inserted, and the outflow side connection port 22 is a receiving port into which the main pipe 4 is inserted. However, the inflow side connection port 21 may be an insertion port inserted into the main pipe 3, and the outflow side connection port 22 may be an insertion port inserted into the main pipe 4. The inner diameter of the inflow side connection port 21 is equal to the inner diameter of the outflow side connection port 22. However, the inner diameter of the inflow side connection port 21 may be smaller or larger than the inner diameter of the outflow side connection port 22. A trunk portion 23 is provided between the inflow side connection port 21 and the outflow side connection port 22.

  The vertical cylinder part 30 is connected to the body part 23 of the horizontal cylinder part 20. An inspection port 31 that opens upward is formed at the upper end of the vertical cylinder portion 30. A trunk portion 32 is provided below the inspection port 31. In the present embodiment, the outer diameter of the inspection port 31 is larger than the outer diameter of the body portion 32. However, the outer diameter of the inspection port 31 is not particularly limited, and may be equal to the outer diameter of the trunk portion 32.

  A branch pipe connection port 41 to which the branch pipe 6 is connected is formed at the left end of the sub cylinder portion 40. The branch pipe connection port 41 opens to the left. The branch pipe connection port 41 opens in the same direction as the opening direction of the inflow side connection port 21. As shown in FIG. 5, when the vertical cylinder portion 30 is viewed from the left to the right, the branch pipe connection port 41 is located obliquely above the inflow side connection port 21. In the present embodiment, when the vertical cylinder portion 30 is viewed from the left to the right, the branch pipe connection port 41 is located obliquely above and to the right of the inflow side connection port 21, but is located obliquely above and to the left. You may do it. The upper end 41 t of the branch pipe connection port 41 is located above the upper end 21 t of the inflow side connection port 21. The lower end 41 s of the branch pipe connection port 41 is located below the upper end 21 t of the inflow side connection port 21 and is located above the lower end 21 s of the inflow side connection port 21. The center 41 c of the branch pipe connection port 41 is located above the upper end 21 t of the inflow side connection port 21. The front end 41 f of the branch pipe connection port 41 is located in front of the front end 21 f of the inflow side connection port 21. The rear end 41b of the branch pipe connection port 41 is located behind the front end 21f of the inflow side connection port 21 and ahead of the rear end 21b. The inner diameter of the branch pipe connection port 41 is smaller than the inner diameter of the inflow side connection port 21. However, the inner diameter of the branch pipe connection port 41 may be equal to the inner diameter of the inflow side connection port 21 or may be larger than the inner diameter of the inflow side connection port 21.

  Straight lines 39f and 39b indicated by alternate long and short dash lines in FIG. 5 represent vertical planes extending in the left-right direction passing through the front end 31f and the rear end 31b of the inspection port 31, respectively. As shown in FIG. 4, the entire horizontal tube portion 20 and sub-tube portion 40 do not protrude forward from the inspection port 31 and do not protrude rearward from the inspection port 31 in plan view. The entire horizontal cylinder part 20 and sub-cylinder part 40 are arranged between the front end 31 f and the rear end 31 b of the inspection port 31 in the front-rear direction. Specifically, as shown in FIG. 5, with respect to the front-rear direction, the entire front end 40 f of the horizontal tube portion 20 and the auxiliary tube portion 40 is located at the same position as the front end 31 f of the inspection port 31 or behind the front end 31 f of the inspection port 31. To do. With respect to the front-rear direction, the entire rear end 20 b of the horizontal cylinder portion 20 and the sub cylinder portion 40 is located at the same position as the rear end 31 b of the inspection port 31 or forward of the rear end 31 b of the inspection port 31. In the present embodiment, the axis 40 c of the sub-cylinder portion 40 is located in front of the axis 20 c of the horizontal cylinder portion 20. With respect to the front-rear direction, the front end 40 f of the sub-cylinder portion 40 is located at the same position as the front end 31 f of the inspection port 31 or behind the front end 31 f of the inspection port 31. With respect to the front-rear direction, the rear end 20 b of the horizontal tube portion 20 is located at the same position as the rear end 31 b of the inspection port 31 or in front of the rear end 31 b of the inspection port 31.

  As shown in FIG. 5, the branch pipe connection port 41 and the inflow side connection port 21 are close to each other and are connected by a connecting portion 29. The connecting portion 29 connects the rear obliquely lower portion of the branch pipe connection port 41 and the forward oblique upper portion of the inflow side connection port 21. When viewed from the left, the extension line 47 of the outer contour of the branch pipe connection port 41 intersects with the outer contour of the inflow side connection port 21. As the branch pipe connection port 41 and the inflow side connection port 21 are close to each other in this manner, the dimensions of the drainage basin 10 in the front-rear direction and the vertical direction are reduced.

  As shown in FIG. 3, the end surface of the branch pipe connection port 41 is arranged on the right side of the end surface of the inflow side connection port 21. However, the end surface of the branch pipe connection port 41 may be disposed at the same position as the end surface of the inflow side connection port 21 in the left-right direction, or may be disposed to the left of the end surface of the inflow side connection port 21. . However, when the end surface of the branch pipe connection port 41 is arranged on the left side of the end surface of the inflow side connection port 21, the auxiliary cylinder part 40 protrudes to the left side of the horizontal cylinder part 20. From the viewpoint of reducing the overall horizontal dimension of the drainage basin 10, the end surface of the branch pipe connection port 41 is located at the same position as the end surface of the inflow side connection port 21 or to the right of the end surface of the inflow side connection port 21 in the left and right direction. It is preferable to arrange in the direction. In the present embodiment, the connection length L3 of the branch pipe connection port 41 is shorter than the connection length L4 of the inflow side connection port 21. However, the connection length L3 of the branch pipe connection port 41 may be equal to the connection length L4 of the inflow side connection port 21. When the drainage basin 10 is viewed from the front, the lower edge 40a of the sub cylinder portion 40 is inclined obliquely downward. Here, the lower edge 40a of the sub cylinder portion 40 is inclined obliquely downward to the right.

  As shown in FIG. 2, a support plate 28 is provided at the lower portion of the horizontal cylinder portion 20. Here, two support plates 28 arranged side by side are provided, but the number of support plates 28 is not particularly limited. By this support plate 28, the drainage basin 10 is stably supported in a groove or the like (not shown).

  As shown in FIG. 7, a main flow path 25 extending from the inflow side connection port 21 to the outflow side connection port 22 is formed inside the horizontal cylinder portion 20. The waste water flowing in from the inflow side connection port 21 flows out of the outflow side connection port 22 after flowing through the main flow path 25. A sub flow channel 45 extending from the branch pipe connection port 41 to the main flow channel 25 is formed in the sub cylinder portion 40. The wastewater that flows in from the branch pipe connection port 41 flows through the sub-flow channel 45, and then merges with the drainage of the main flow channel 25 and flows out from the outflow side connection port 22.

  As shown in FIG. 8, a part of the vertical cylinder portion 30 is recessed toward the center, and a horizontal wall 34 and a vertical wall 33 extending downward from the horizontal wall 34 are formed inside the inspection port 31 when viewed from above. ing. As shown in FIG. 9, the vertical wall 33 is connected to the lower half portion 42 of the sub cylinder portion 40. The vertical wall 33 extends upward from the lower half portion 42 of the sub cylinder portion 40. The vertical wall 33 may extend in the vertical direction, or may extend in a direction slightly inclined from the vertical direction. As shown in FIG. 4, the vertical wall 33 extends obliquely rearward to the right in plan view. In other words, the vertical wall 33 extends from the front end 42f of the lower half part 42 of the sub-cylinder part 40 in a direction inclined with respect to the axis 20c so as to approach the axis 20c of the horizontal cylinder part 20 toward the right. Yes.

  As shown in FIG. 9, the sub-cylinder portion 40 has a horizontal surface 44a that extends horizontally from the branch pipe connection port 41 and an inclined surface 44b that extends obliquely downward to the right from the horizontal surface 44a. As shown in FIGS. 4 and 7, the inclined surface 44 b is disposed inside the inspection port 31 and the horizontal plane 44 a is disposed outside the inspection port 31 in plan view.

  As shown in FIG. 4, the lower half portion 42 of the sub cylinder portion 40 includes a partition wall 43 that protrudes rightward from a left end 42 b of a portion located inside the inspection port 31 in a plan view. The partition wall 43 is located inside the inspection port 31 in plan view, and partially partitions the inside of the sub-cylinder part 40 and the inside of the horizontal cylinder part 20. The partition wall 43 is not always necessary and can be omitted.

  As shown in FIG. 9, the wall surface 43a closer to the axis 40c of the sub-cylinder portion 40 in the partition wall 43, that is, the front wall surface 43a is formed such that the inclination angle with respect to the horizontal plane increases toward the rear. . In other words, the wall surface 43a is formed such that the inclination angle with respect to the horizontal plane increases as the distance from the axis 40c of the sub-cylinder portion 40 increases. The wall surface 43a is a steep slope as the distance from the axis 40c of the sub-cylinder portion 40 increases. In the present embodiment, the wall surface 43 a is formed in an arc surface centered on the axis 40 c of the sub-cylinder portion 40. However, the shape of the wall surface 43a is not limited to the circular arc surface, and may be another curved surface or an inclined plane. Of the partition wall 43, the wall surface 43b far from the axis 40c of the sub-cylinder portion 40, that is, the rear wall surface 43b is a plane extending in the vertical direction. However, the shape of the partition wall 43 is not limited to the above shape.

  As shown in FIG. 4, the lower half portion 42 of the sub-cylinder portion 40 has a right end 42 r located inside the inspection port 31 in a plan view. The partition wall 43 is disposed behind the right end 42r. In other words, in plan view, the distance L1 between the partition wall 43 and the axis 20c of the horizontal cylinder 20 is greater than the distance L2 between the right end 42r of the lower half 42 of the sub cylinder 40 and the axis 20c of the horizontal cylinder 20. short.

  The lower half part 42 of the sub-cylinder part 40 has a lower edge 46 that connects the partition wall 43 and the right end 42r. The lower edge 46 is formed in a curved shape in plan view. The lower edge 46 is formed in a curved shape such that the inclination angle with respect to the axis 20c of the horizontal tube portion 20 decreases to the right in plan view. Specifically, the lower edge 46 extends forward from the partition wall 43 in a plan view, extends obliquely forward to the right, further extends rightward, and reaches the right end 42r. In plan view, the lower edge 46 and the vertical wall 33 intersect inside the inspection port 31. That is, the intersection 46 a between the lower edge 46 and the vertical wall 33 is located inside the inspection port 31 in plan view.

  The above is the configuration of drainage mast 10. As described above, the drainage basin 10A has the same configuration as the drainage basin 10. Next, the configuration of the drain pipe 1 will be described with reference to FIG.

  The drains 10 and 10A are arranged in front of the foundation 2 of the building. The downstream end of the main pipe 3 is connected to the inflow side connection port 21 of the drainage basin 10. The upstream end of the main pipe 4 is connected to the outflow side connection port 22 of the drain 10 and the downstream end of the main pipe 4 is connected to the inflow side connection 21 of the drain 10A. In a plan view, the foundation 2 of the building is provided on the opposite side to the side where the axis 40c of the sub cylinder 40 is located with respect to the axis 20c of the horizontal cylinder 20. The main pipes 3, 4 and 5 are arranged in parallel with the foundation 2 of the building.

  The branch pipe 6 has a straight pipe part 6a extending forward and a bent part 6b. The bent portion 6b is constituted by a pipe joint whose axial direction is bent 90 degrees. The bent portion 6b extends to the left from the branch pipe connection port 41 of the drainage basin 10 and then bends toward the rear side. In other words, the bent portion 6b extends to the left from the branch pipe connection port 41 in plan view, and then is opposite to the side on which the axis 40c of the sub cylinder 40 is located with respect to the axis 20c of the horizontal cylinder 20. Bent towards the side. The branch pipe 7 has a straight pipe part 7a similar to the straight pipe part 6a and a bent part 7b similar to the bent part 6b. The bent portion 7b extends leftward from the branch pipe connection port 41 of the drain 10A and then bends toward the rear side. The branch pipes 6 and 7 penetrate the foundation 2.

  As described above, according to the drainage basin 10 according to the present embodiment, as shown in FIG. 5, the front and rear ends 31 f and 31 b of the inspection port 31 are formed as a whole in the horizontal cylinder part 20 and the auxiliary cylinder part 40 in the front-rear direction. Is located between. The horizontal cylinder part 20 and the auxiliary cylinder part 40 do not protrude forward and backward from the inspection port 31. Therefore, according to this embodiment, the width (front-rear width) of the drainage basin 10 can be reduced. Further, since the branch pipe connection port 41 is disposed obliquely above the inflow side connection port 21, the branch pipe connection port 41 drains water compared to the case where the branch pipe connection port 41 is disposed directly above the inflow side connection port 21. The vertical dimension can be reduced. Therefore, when the drainage basin 10 is installed in the ground, it is not necessary to dig deeper into the ground, and the construction time and labor are not more than conventional.

  By the way, according to the drainage basin 10, since the branch pipe connection port 41 and the inflow side connection port 21 are close to each other, in the drainage basin 10, a part of the drainage flowing from the branch pipe connection port 41 is inflow side. There is a concern that it will flow backward toward the connection port 21. However, as shown in FIG. 4, the drainage basin 10 according to the present embodiment includes a partition wall 43 that protrudes rightward from the left end 42 b of the portion located inside the inspection port 31 in plan view. The partition wall 43 can suppress the backflow from the branch pipe connection port 41 to the inflow side connection port 21.

  As described above, according to the drainage basin 10 according to the present embodiment, since the backflow from the branch pipe connection port 41 to the inflow side connection port 21 can be suppressed by the partition wall 43, the horizontal cylinder part 20 and the auxiliary cylinder part There is no problem even if the entire 40 is disposed between the front end 31 f and the rear end 31 b of the inspection port 31. Therefore, according to the present embodiment, the width and the vertical dimension of the drainage can 10 can be reduced while suppressing the backflow from the branch pipe connection port 41 to the inflow side connection port 21.

  Further, according to the drainage basin 10 according to the present embodiment, as shown in FIG. 9, the wall 43 a closer to the axis 40 c of the sub-cylinder portion 40 of the partition wall 43 is inclined away from the axis 40 c with respect to the horizontal plane. It is formed to be as large as possible. Therefore, the drainage in the sub-cylinder portion 40 is difficult to flow over the partition wall 43 and into the horizontal cylinder portion 20. Therefore, the backflow from the branch pipe connection port 41 to the inflow side connection port 21 can be effectively suppressed.

  Although the specific shape of the wall surface 43a of the partition wall 43 is not specifically limited, in this embodiment, it is formed in the circular arc surface centering on the axis line 40c of the sub cylinder part 40, as shown in FIG. Therefore, the wall surface 43 a of the partition wall 43 is smoothly continuous with the wall surface of the tube bottom portion of the sub-cylinder portion 40, and the waste water flowing from the branch pipe connection port 41 can be smoothly circulated in the sub-tube portion 40.

  As shown in FIG. 4, in a plan view, the distance L1 between the partition wall 43 and the axis 20c of the horizontal cylinder part 20 is the distance between the right end 42r of the lower half 42 of the sub cylinder part 40 and the axis 20c of the horizontal cylinder part 20. It is shorter than the distance L2. Thus, since the partition wall 43 is disposed at a position close to the axis 20c of the horizontal cylinder part 20, the width of the flow path in the sub cylinder part 40 can be reduced while suppressing the width (front and rear width) of the drainage drain 10. It can be secured sufficiently. According to the present embodiment, since the waste water flowing in from the branch pipe connection port 41 can be smoothly flowed toward the outflow side connection port 22, the backflow from the branch pipe connection port 41 to the inflow side connection port 21 is effective. Can be suppressed.

  Further, according to the drainage basin 10 according to the present embodiment, the lower half portion 42 of the sub-cylinder part 40 is a curve that becomes smaller as the inclination angle with respect to the axis 20c of the horizontal cylinder part 20 goes to the right in plan view. The lower edge 46 of the shape is formed. According to the present embodiment, out of the waste water flowing through the lower edge 46 and flowing into the horizontal cylindrical portion 20, the waste water that passes through the left part close to the partition wall 43 (see the arrow W <b> 1 in FIG. 7) is the partition. It becomes easier to flow in the axial direction than the drainage (see arrow W2 in FIG. 7) passing through the right part far from the wall 43. Therefore, the drainage in the sub-cylinder portion 40 is difficult to flow over the partition wall 43 and into the horizontal cylinder portion 20. Therefore, the backflow from the branch pipe connection port 41 to the inflow side connection port 21 can be effectively suppressed.

  As shown in FIG. 4, according to the drainage basin 10 according to the present embodiment, the vertical cylinder portion 30 has a vertical wall 33 located inside the inspection port 31 in a plan view. The vertical wall 33 is closer to the axis 20c of the horizontal cylinder part 20 toward the right side from the side opposite to the axis 20c side of the horizontal cylinder part 20 with respect to the axis 40c of the sub cylinder part 40 in plan view. Inclined. Therefore, even if drainage flows from the branch pipe connection port 41 vigorously, the drainage hits the vertical wall 33 and flows into the horizontal cylindrical portion 20. Therefore, the vertical wall 33 can smoothly guide the drainage into the horizontal cylindrical portion 20. Further, in plan view, the lower edge 46 and the vertical wall 33 of the sub cylinder portion 40 intersect with each other inside the inspection port 31. Therefore, the drainage in the sub-cylinder part 40 is guided into the horizontal cylinder part 20 at a more upstream position.

  The branch pipe connection port 41 suffices if it is obliquely above the inflow side connection port 21, but in this embodiment, as shown in FIG. 5, the center 41 c of the branch pipe connection port 41 is from the upper end 21 t of the inflow side connection port 21. Is also located above. Since a sufficient height difference between the center 41c of the branch pipe connection port 41 and the center 21c of the inflow side connection port 21 can be ensured, the backflow from the branch pipe connection port 41 to the inflow side connection port 21 is effectively suppressed. can do.

  As shown in FIG. 1, according to this embodiment, since the drainage drains 10 and 10A having a small width (front and rear width) are provided as described above, the width (front and rear width) of the drain pipe 1 is reduced. can do. Therefore, the drain pipe 1 can be installed in a narrow area. Further, the branch pipes 6 and 7 once extend from the branch pipe connection port 41 in the opening direction of the branch pipe connection port 41, and then the side on which the axis 40 c of the sub cylinder part 40 is located with respect to the axis 20 c of the horizontal cylinder part 20. And bent portions 6b and 7b extending toward the opposite side. As shown by an arrow W3 in FIG. 1, the drainage in the branch pipes 6 and 7 flows while wrapping around the axis 20c of the horizontal cylinder part 20 in plan view. Therefore, the drainage smoothly flows into the sub cylinder portion 40 through the branch pipe connection port 41. Further, since the drainage flows so as to go around the outside of the partition wall 43, the drainage hardly gets over the partition wall 43. Therefore, the backflow from the branch pipe connection port 41 to the inflow side connection port 21 can be effectively suppressed.

  According to the present embodiment, the main pipes 3, 4, 5 are arranged in parallel with the foundation 2 of the building. According to this embodiment, the drainage pipe line 1 can be compactly installed in the vicinity of the foundation 2 of the building.

  In the drainage basin 10 according to the embodiment, the branch pipe connection port 41 is arranged in front of the inflow side connection port 21, but the branch pipe connection port 41 is arranged behind the inflow side connection port 21. Also good. The drainage basin 10 may be formed in a symmetric shape about the axis 20c of the horizontal cylinder portion 20 as a center.

DESCRIPTION OF SYMBOLS 1 Drain pipe 3, 4, 5 Main pipe 6,7 Branch pipe 10 Drain 20 Horizontal tube part 21 Inflow side connection port 22 Outflow side connection port 30 Vertical cylinder part 31 Inspection port 33 Vertical wall 40 Subcylinder part 41 Branch pipe connection Mouth 43 partition wall

Claims (10)

A straight tubular horizontal tube portion having an inflow side connection port formed at one end and an outflow side connection port formed at the other end;
A vertical cylinder portion having an inspection port opened upward and extending upward from the horizontal cylinder portion;
A branch pipe connection port that opens in the same direction as the opening direction of the inflow side connection port, and a sub cylinder portion that extends from the vertical cylinder portion in the opening direction of the inflow side connection port, and
When the opening direction of the inflow side connection port is on the left and the opening direction of the outflow side connection port is on the right side,
When the vertical tube portion is viewed from the left to the right, the branch pipe connection port is disposed obliquely above the inflow side connection port,
With respect to the front-rear direction, the front ends of the horizontal tube portion and the sub tube portion are located at the same position as the front end of the inspection port or behind the front end of the inspection port, and the horizontal tube portion and the sub tube portion Drain the entire rear end at the same position as the rear end of the inspection port or forward of the rear end of the inspection port.   The sub-cylinder portion includes a partition wall that protrudes rightward from a left end of a portion located inside the inspection port in a plan view and partially partitions the inside of the sub-cylinder portion and the inside of the horizontal cylinder portion. The drainage according to claim 1.   3. The drainage according to claim 2, wherein a wall surface of the partition wall that is closer to the axis of the sub-cylinder part is formed such that an inclination angle with respect to a horizontal plane increases as the distance from the axis of the sub-cylinder part increases.   The drainage according to claim 3, wherein a wall surface of the partition wall that is closer to the axis of the sub-cylinder part is formed in an arc surface centering on the axis of the sub-cylinder part.   5. The plane according to claim 2, wherein a distance between the partition wall and the axis of the horizontal cylinder is shorter than a distance between the right end of the lower half of the sub cylinder and the axis of the horizontal cylinder in plan view. Drain as described in one. In plan view, the lower half portion of the sub-cylinder portion has a lower edge that is located inside the inspection port and connects the right end of the partition wall and the right end of the lower half portion,
6. The drain according to claim 5, wherein the lower edge is formed in a curved shape such that an inclination angle with respect to the axis of the horizontal cylinder portion decreases in the right direction in a plan view. The vertical cylinder portion has a vertical wall that is located inside the inspection port and extends upward in a plan view,
In the plan view, the vertical wall is closer to the axis of the horizontal cylinder part as it goes to the right from the side opposite to the axis side of the horizontal cylinder part with respect to the axis of the secondary cylinder part. Extending in a direction inclined with respect to the axis of the part,
The drainage according to claim 6, wherein the lower edge and the vertical wall intersect with each other inside the inspection port in a plan view.   The drainage according to any one of claims 1 to 7, wherein a center of the branch pipe connection port is located above an upper end of the inflow side connection port. When the drain according to any one of claims 1 to 8,
A first main pipe connected to the inflow side connection port of the drainage basin;
A second main pipe connected to the outflow side connection port of the drainage basin;
A branch pipe connected to the branch pipe connection port of the drainage basin,
In a plan view, the branch pipe extends from the branch pipe connection port in the opening direction of the branch pipe connection port, and is opposite to the side on which the axis of the sub-tube portion is located with respect to the axis of the horizontal tube portion. A drainage pipe having a bent portion extending toward the side. In a plan view, the foundation of the building is provided on the side opposite to the side where the axis of the sub-cylinder part is located with respect to the axis of the horizontal cylinder part,
The first main pipe and the second main pipe are arranged in parallel with the foundation;
The drain pipe according to claim 9, wherein the branch pipe passes through the foundation.

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