JP2008144470A - Draining system and draining deceleration member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a draining system, capable of connecting two horizontal branch pipes to a drainage collecting pipe joint in an opposed state or in a state close to the opposed state while preventing inflow of one horizontal branch pipe to the other horizontal branch pipe, to respond to a limited piping space and use an existing drainage collecting pipe joint in a multi-storied building. <P>SOLUTION: In the draining system 1 for the multi-storied building in which a horizontal branch pipe 20 for guiding drainage from an indoor sanitary facility 40 to the drainage collecting pipe joint 10 is connected to the drainage collecting pipe joint 10 in a state where it is substantially opposed to the other horizontal branch pipe 50, a horizontal part 21 of the horizontal branch pipe 20 includes a drainage decelerating part 30 having both side walls swollen to the outside, and a drainage collision wall 31 extending from one side wall to at least a virtual line 36 mutually connecting the centers of an inflow port 34 and an outflow port 35 of the deceleration part 30 is protrusively provided within the deceleration part 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a drainage system comprising a drainage collecting pipe joint interposed for each floor with respect to a drainage stack of a multi-layered building, and a plurality of side branch pipes connected to the drainage collecting pipe joint, and The present invention relates to a drainage deceleration member used in this drainage system.

  In multi-layer buildings such as apartment houses, hotels, and hospitals, drainage stacks that run vertically through each floor are provided for drainage. Further, the drainage stack is provided with a drainage collecting pipe joint for each floor, and a plurality of horizontal branch pipes are connected to each drainage collecting pipe joint. For example, when used in a multi-story building, the side branch pipe is connected at one end to a drain pipe of an indoor sanitary facility such as a toilet, a bath, a sink, and a wash basin that is installed in the house. The end is connected to the drainage collecting pipe joint described above, and the drainage from the indoor sanitary equipment is allowed to flow to the drainage collecting pipe joint.

  In addition, a plurality of horizontal branch pipes are connected to such a drainage collecting pipe joint at substantially the same height, and two of the horizontal branch pipes are substantially opposed to each other (mutual pipes). Are often connected with each other facing each other. In such a connection state, when a strong drainage such as toilet drainage flows from one side branch pipe to the drainage collecting pipe joint, the drainage jumps over the drainage collecting pipe joint because the drainage has a strong momentum. It may flow into the other side branch pipe. As a matter of course, the toilet drainage contains a large amount of filth, so if the toilet drainage flows into the other side branch pipe and does not flow down to the drainage collecting pipe joint, it will remain in the worst case. There was a problem that a bad odor rose from the branch pipe to the inside.

  The mechanism by which strong drainage flows into the opposite side branch pipes will be described using two specific examples of toilet drainage.

  First, in the wall-draining toilet 140 as shown in FIG. 10, the drainage is dropped by the first bent portion 124 on the back of the wall, and then the drainage is bent horizontally by the second bent portion 125 below the floor. A method of guiding to the pipe joint 110 is adopted. The drainage of this toilet pipe flows along the curved surface of the inner wall of the second bent portion 125 after the water strength becomes strong due to the fall at the first bent portion 124, and as shown by the arrow in the figure due to the strong water force. Jump up. Moreover, since the wall drain type toilet pipe has two bent portions as described above, and the distance from the second bent portion 125 to the drainage collecting pipe joint 110 is short, a floor drain type toilet pipe (described later) In many cases, the horizontal portion 121 becomes shorter than that shown in FIG. Therefore, the drained water jumping as described above jumps over the drainage collecting pipe joint 110 without landing on the pipe bottom of the horizontal portion 121 and flows into the opposite side branch pipe 160.

  In addition, a system called a siphon type is generally used for the floor drainage-type toilet 140 as shown in FIG. 11, and this system has a feature that the momentum of the drainage is increased. Since the toilet drainage is extremely strong, the drainage reaches the mouth of the opposite side branch pipe 160 and flows into the interior, or as shown by the arrows in the figure, a part of the toilet drains inside the side branch pipe 160. Or had flowed into.

Therefore, Patent Document 1 proposes a drainage collecting pipe joint for preventing the inflow of drainage into such an opposite lateral branch pipe. In this drainage collecting pipe joint, two pipe ports are provided in an orthogonal direction, and an elbow joint is integrally provided in one of the pipe ports. In the present invention, since the two side branch pipes connected to the drainage collecting pipe joint do not face each other, strong drainage such as toilet drainage does not flow from one side branch pipe into the other side branch pipe. .
JP 2004-84394 A

  However, in a multi-layered building, the piping space for installing the drainage collecting pipe joint is limited, and the drainage collecting pipe joint described above has an elbow joint integrally, and the volume must be increased accordingly. Therefore, there was a problem that it could not fit in the piping space.

  Further, when manufacturing such a drainage collecting pipe joint, since the drainage collecting pipe joint and the elbow joint are integrally formed, a mold having a complicated shape is required, and the manufacturing cost increases. There was a problem.

  The present invention has been made in view of the actual situation, and the object thereof is to enable the connection of two side branch pipes to a drainage collecting pipe joint in an opposed state or a state close to the opposed state, while one lateral branch is connected. A drainage system that can prevent drainage from the pipe from flowing into the other side branch pipe, can cope with a limited piping space, and can use an existing drainage pipe joint in a multi-layered building, and the drainage It is providing the drainage deceleration member used for a system.

  In order to solve the above-mentioned problems, the drainage system of the present invention is a drainage collecting system in which the side branch pipe that guides drainage from the indoor hygiene facility to the drainage collection pipe joint is in a state of facing or close to the other side branch pipe. In the multi-layer building drainage system connected to the pipe joint, the horizontal portion of the horizontal branch pipe is provided with a drain reduction portion having a shape in which both side walls bulge outward, and in the drain reduction portion, A drainage collision wall that protrudes from one side wall to an imaginary line that connects at least the centers of the inlet and outlet of the drainage reduction unit is provided.

  Here, the horizontal portion is a portion of the horizontal branch pipe that is substantially horizontal, and is actually provided with a slight downward gradient toward the drainage collecting pipe joint.

  According to the present invention as described above, the horizontal portion is provided with the drainage speed reduction portion having a shape in which both side walls bulge outward, and at least the inlet of the drainage speed reduction portion from one side wall is provided in the drainage speed reduction portion. Since the drainage collision wall that reaches the imaginary line connecting the centers of the water and the outlet is projected, the strong drainage water collides with the wall surface and drainage collision wall in the drainage deceleration part, and the water force is weakened . Therefore, it can suppress that the waste_water | drain discharged | emitted from the waste_water | drain reduction | decrease part jumps over a waste_water | drain collective pipe joint, and penetrates into the side branch pipe which opposes.

  Further, as described above, the drainage is discharged from the outlet of the drainage speed reduction part by the drainage speed reduction part, but the drainage with a strong water flow flows into the drainage reduction part one after another. The flow of drainage stagnates at the deceleration part, and the inside of the horizontal branch pipe becomes full. However, since the drainage reduction part has a shape in which both side walls bulge outward and has a large volume, the stagnant drainage can be stored in the drainage reduction part, up to the position of the drain trap of the indoor sanitary equipment The side branch pipe is not filled with water. Therefore, the inside of the horizontal branch pipe is filled with water, so that the drainage of the full water reaches the drain trap of the indoor sanitary equipment, and the sealed water of the drain trap is not drained by the siphon phenomenon.

  Further, the drainage collision wall protrudes from one side wall into the drain deceleration part so as to reach at least a virtual line connecting the centers of the inlet and outlet of the drain deceleration part. Most of the wastewater that flows into the drainage deceleration part collides with the drainage collision wall in the drainage deceleration part. Therefore, the wastewater that has flowed into the drainage deceleration part is prevented from flowing directly to the outlet without colliding with the wall surface or the drainage collision wall in the drainage reduction part, and is difficult to be discharged from the outlet with a strong water flow.

  Further, in the drainage system of the present invention, the side branch pipe that guides drainage from the indoor hygiene facility to the drainage collection pipe joint is connected to the drainage collection pipe joint in a state of facing or close to the other side branch pipe. In the multi-layered building drainage system, the horizontal portion of the horizontal branch pipe is provided with a drainage reduction portion having a shape in which both side walls bulge outward, and the drainage reduction portion includes at least one side wall from the side wall. A first drainage collision wall that reaches the imaginary line connecting the centers of the inlet and outlet of the drainage reduction unit is provided so as to protrude from one side of the inlet or outlet, and from the other side wall A second drainage collision wall that reaches at least the imaginary line protrudes toward the other of the inflow port or the outflow port.

  According to the present invention as described above, the horizontal portion is provided with the drainage speed reducing portion having a shape in which both side walls bulge outward, and the first drainage collision wall and the second drainage collision in the drainage speed reduction portion. Since the wall is protruded, the drainage having a strong water force collides with the wall surface in the drainage reduction part and the first and second drainage collision walls, and the water force can be significantly weakened. Therefore, it can suppress that the waste_water | drain discharged | emitted from the waste_water | drain reduction | decrease part jumps over a waste_water | drain collective pipe joint, and penetrates into the side branch pipe which opposes.

  Further, as described above, the drainage is discharged from the outlet of the drainage speed reduction part by the drainage speed reduction part, but the drainage with a strong water flow flows into the drainage reduction part one after another. The flow of drainage stagnates at the deceleration part, and the inside of the horizontal branch pipe becomes full. However, since the drainage reduction part has a shape in which both side walls bulge outward and has a large volume, the stagnant drainage can be stored in the drainage reduction part, up to the position of the drain trap of the indoor sanitary equipment The side branch pipe is not filled with water. Therefore, the inside of the horizontal branch pipe is filled with water, so that the drainage of the full water reaches the drain trap of the indoor sanitary equipment, and the sealed water of the drain trap is not drained by the siphon phenomenon.

  Further, the first and second drainage collision walls are formed in the drainage deceleration part to a position that reaches from one or the other side wall to at least a virtual line that connects the centers of the inlet and outlet of the drainage deceleration part. Therefore, most of the waste water that has flowed into the drain speed reducing portion from the inlet will collide with the first and second drainage collision walls in the drain speed reducing portion. Accordingly, the wastewater that has flowed into the drainage reduction unit is prevented from flowing directly to the outlet without colliding with the wall surface or the first and second drainage collision walls in the drainage reduction unit, and discharged from the outlet with a strong water flow. It becomes difficult to be done.

  Moreover, the inflow port of the drainage deceleration part may be provided with drainage guide means for guiding drainage to the drainage collision wall.

  Moreover, the inflow port of the drainage decelerating unit may be provided with a drainage guide means for guiding the drainage to the drainage collision wall protruding near the inlet.

  In these cases, the strong water drainage that enters from the inflow port of the drainage deceleration part does not collide with the wall surface or drainage collision wall in the drainage deceleration part and is not discharged from the outlet, The effect of drainage deceleration can be improved.

  Further, the drainage reduction part is provided with a drainage channel for guiding drainage from the inlet to the outlet on the bottom surface, and the bottom surface is inclined downward from both sides toward the drainage channel. It may be.

  In this case, when the flow rate of the drainage in the drainage deceleration unit decreases, the drainage in the drainage deceleration unit flows toward the drainage channel due to the gradient of the bottom surface, and is discharged from the outlet along the drainage channel. Therefore, there is no possibility that the waste water stays in the drain speed reducing portion.

  The horizontal branch pipe may be formed with an upper drainage inhibition barrier that blocks an upper part of a pipe end connected to the drainage collecting pipe joint.

  In this case, the horizontal branch pipe is formed with an upper drainage obstruction barrier that closes the upper end of the pipe end connected to the drainage collecting pipe joint. The drainage that has reached the top of the pipe does not enter the side branch pipe that is in a substantially opposite state.

  That is, when the drainage reduction part is provided in the horizontal branch pipe, the wastewater may be discharged as a swirl flow at the outlet of the drainage reduction part. If it reaches, it may jump over the drainage collecting pipe joint and invade into the side branch pipe in a substantially opposite state. However, since the swirling wastewater collides with the upper drainage obstruction barrier formed on the side branch pipe, the upper drainage obstruction barrier can prevent the drainage from jumping over the drainage collecting pipe joint, and the substantially opposite sideways sideways can be prevented. It is possible to prevent drainage from entering the branch pipe.

  Moreover, the drainage deceleration member of the present invention includes a drainage deceleration unit used in the drainage system described above.

  The drainage system of the present invention and the drainage reduction member used in the drainage system can connect two side branch pipes to the drainage collecting pipe joint in an opposed state or a state close to the opposed state, It is possible to prevent the drainage from the side branch pipe from flowing into the other side branch pipe, to cope with a limited piping space, and to use the existing drainage collecting pipe joint in the multilayer building.

  Embodiments of the present invention will be described below with reference to the drawings.

[Embodiment 1]
An example in which the present invention is applied to floor drain type toilet piping will be described with reference to FIGS.

  1A is a side view showing the drainage system in the present embodiment, FIG. 1B is a partial sectional view showing the drainage system, and FIG. 2 is a sectional view showing the drainage speed reduction unit 30 of the drainage system shown in FIG. 3 is a cross-sectional perspective view showing the lower half of the drainage speed reducing portion 30 shown in FIG. 2, and FIGS. 4 to 6 are cross-sectional views showing the embodiments of the drainage speed reducing portion 30, and in FIGS. , Respectively, (a) is a horizontal sectional view and (b) is a sectional view taken along line AA.

  The drainage system 1 of the present embodiment includes a drainage collecting pipe joint 10 and two side branch pipes 20 and 60 facing each other.

  The drainage collective pipe joint 10 is provided for each floor with respect to a drainage stack 50 piped vertically through each floor of a multilayered building or the like. A plurality of side branch pipes 20 and 60, which will be described later, are connected to the drainage collecting pipe joint 10. Of these, the outlets of the two side branch pipes 20 and 60 are approximately the same height in the drainage collecting pipe joint 10. Opposite state.

  One end of the horizontal branch pipe 20 is connected to a drain pipe 41 of an indoor sanitary facility (toilet 40 in the present embodiment) such as a toilet, a bath, a sink, and a wash basin in the residence, and the other end is a drain collection. It is connected to the pipe joint 10. Further, a horizontal portion 21 is formed in the horizontal branch pipe 20 between the floor 61 and the floor slab 62.

  In addition, as shown in FIGS. 7 and 8, the horizontal branch pipe 20 may be formed with an upper drainage inhibition barrier 22 that covers the upper part of the pipe end connected to the drainage collecting pipe joint 10. In this case, the drainage that has turned into a swirling flow or the drainage that has reached the upper end of the pipe end of the side branch pipe 20 may jump over the drainage collecting pipe joint 10 and enter the side branch pipe 60 that is in a substantially opposite state. Absent.

  That is, by providing the drainage speed reducing unit 30 to be described later in the horizontal branch pipe 20, the drainage may be discharged as a swirling flow at the outlet 35 of the draining speed reducing unit 30, and the drained water that has turned into the swirling flow may be discharged. If the drainage collecting pipe joint 10 reaches the apex, it may jump over the drainage collecting pipe joint 10 and enter the side branch pipe 60 in a substantially opposite state. However, since the swirling wastewater collides with the upper drainage obstruction barrier 22 formed on the side branch pipe 20, the upper drainage obstruction barrier 22 can prevent the drainage from jumping over the drainage collecting pipe joint 10, and substantially It is possible to prevent drainage from entering the side branch pipe 60 in the opposed state.

  Further, as shown in FIGS. 7 and 8, the horizontal branch pipe 20 may be configured such that the lower part of the pipe end on the side connected to the drainage collecting pipe joint 10 is retracted from the upper part. As described above, when the upper drainage blocking barrier 22 is provided in the horizontal branch pipe 20, the opening of the pipe end of the horizontal branch pipe 20 becomes narrow, so that when the water level of the horizontal branch pipe 20 rises, It becomes easy to fill up in the pipe 20. However, by retracting the lower part of the pipe end from the upper part, the opening of the pipe end of the side branch pipe 20 can be widened, and the inside of the side branch pipe 20 can be suppressed from being full.

  The horizontal portion 21 is a region of the horizontal branch pipe 20 that is in a substantially horizontal state. Further, the horizontal portion is provided with a drainage speed reducing portion 30 having a shape in which both side walls bulge outward. Here, the horizontal portion 21 is a portion that is substantially horizontal in the lateral branch pipe 20, and actually has a slight downward slope toward the drainage collecting pipe joint 10.

  As shown in FIGS. 2 and 3, the drainage speed reducing unit 30 has a shape in which both side walls in a predetermined region of the horizontal part are bulged outward. A drainage collision wall 31 that protrudes from the side wall to at least a virtual line 36 that connects the centers of the inflow port 34 and the outflow port 35 of the drainage speed reduction unit 30 is provided.

  As a result, the wastewater diffuses and flows in at the inlet 34 of the drainage deceleration unit 30 and collides with the wall surface in the drainage deceleration unit 30 and the drainage collision wall 31, thereby weakening the drainage water flow. Therefore, it is possible to suppress the drainage discharged from the drainage speed reducing unit 30 from jumping over the drainage collecting pipe joint 10 and entering the opposing side branch pipe 60.

  Further, as described above, the drainage is drained from the outlet 35 of the drainage speed reduction unit 30 by the drainage speed reduction unit 30 to weaken the water flow. For this reason, the flow of drainage stagnates at the drainage deceleration unit 30 and the inside of the horizontal branch pipe 20 becomes full. However, since the drainage speed reduction part 30 has a shape in which both side walls bulge outward and has a large volume, the stagnant drainage water can be stored in the drainage speed reduction part 30, and the drainage trap of the indoor sanitary equipment The horizontal branch pipe 20 is not filled up to the position. Therefore, the inside of the horizontal branch pipe 20 becomes full, so that the drainage of the full water reaches the drain trap of the indoor sanitary equipment, and the sealed water of the drain trap is not drained by the siphon phenomenon.

  Further, the drainage collision wall 31 protrudes from the one side wall into the drainage deceleration part 30 so as to reach at least a virtual line 36 connecting the centers of the inlet 34 and the outlet 35 of the drainage reduction part 30. Therefore, most of the wastewater that has flowed into the drainage speed reduction unit 30 from the inlet 34 collides with the drainage collision wall 31 in the drainage speed reduction unit 30. Therefore, it is possible to prevent the wastewater flowing into the drainage speed reduction unit 30 from flowing directly to the outlet 35 without colliding with the wall surface or the drainage collision wall 31 in the drainage reduction part 30, and from the outlet 35 with a strong water flow. It becomes difficult to be discharged.

  The drain speed reducing unit 30 is not particularly limited as long as it has the above-described shape, and is not limited to the example illustrated in FIGS. 2 and 3. For example, as illustrated in FIG. 4, the drainage illustrated in FIGS. 2 and 3. As shown in FIG. 5, the drainage reduction part 30 shown in FIG. 4 is slightly rotated in the horizontal direction as shown in FIG. As shown in FIG. 4, a shape in which the pipe axes of the inflow port 34 and the outflow port 35 of the drainage speed reduction unit 30 shown in FIG. 4 are shifted can be used. In addition, the side wall of the drainage deceleration part 30 is not limited to a linear shape as illustrated, and for example, an arc shape can be used.

  Further, a drainage guide means 37 that guides drainage to the drainage collision wall 31 may be provided at the inlet 34 of the drainage deceleration unit 30. In this case, the drainage with strong water entering from the inlet 34 of the drainage speed reduction unit 30 does not collide with the wall surface in the drainage speed reduction unit 30 or the drainage collision wall 31 and is not discharged from the outlet 35. In addition, the effect of the deceleration of the drainage by the drainage deceleration unit 30 can be improved.

  Further, as shown in FIGS. 2 to 6, the drainage speed reducing unit 30 is provided with a drainage channel 38 that guides drainage from the inlet 34 to the outlet 35 on the bottom surface, and the bottom surface is drained from both sides. It may be inclined downward toward the flow path 38. In this case, when the flow rate of the drainage in the drainage deceleration unit 30 decreases, the drainage in the drainage deceleration unit 30 flows toward the drainage channel 38 due to the gradient of the bottom surface, and along the drainage channel 38. Since the water is discharged from the outflow port 35, there is no possibility that the wastewater stays in the drainage reduction unit 30.

  The drainage flow path 38 is not particularly limited as long as it has the structure as described above. For example, the drainage flow path 38 having an arc cross section as shown in FIGS. 2 and 3 or FIG. ) In which the drainage flow path 38 is formed to be the lowest in the bottom surface. Here, the drainage flow path 38 shown in FIGS. 2 and 3 is indicated by a solid line in FIG. 2A, and is formed in a circular arc shape in FIG. 2B. Further, the drainage flow path 38 shown in FIG. 4 is indicated by a one-dot chain line in FIG. 4A, and is indicated by an arrow in the figure in FIG. 4B.

  In addition, in this Embodiment, although the drainage reduction part 30 was described in full detail about the example applied to the floor drainage type toilet piping, this drainage reduction part 30 may be used for a wall drainage type toilet piping, Accordingly, it is possible to prevent the drainage from jumping into the bent portion of the wall drain type toilet pipe and entering the side branch pipe 60 facing the drainage.

[Embodiment 2]
An example in which the present invention is applied to floor drain type toilet piping will be described with reference to FIG.

  FIG. 9 shows the drainage speed reduction part 30 of the drainage system in the present embodiment, FIG. 9A is a horizontal sectional view showing the drainage speed reduction part 30, and FIG. 9B is AA showing the drainage speed reduction part. It is line sectional drawing.

  The drainage system 1 of the present embodiment includes a drainage collecting pipe joint 10 and two side branch pipes 20 and 60 facing each other.

  The drainage system 1 of the present embodiment has the same configuration as that of the first embodiment except for the drainage speed reduction unit 30 provided in the horizontal portion 21 of the side branch pipe 20, and therefore, the same member includes The same reference numerals are given and the description thereof is omitted, and only the drainage reduction unit 30 which is a difference will be described.

  As shown in FIG. 9, the drainage speed reducing unit 30 in the present embodiment has a shape in which both side walls in a predetermined region of the horizontal part are bulged outward. The first drainage collision wall 32 that reaches at least a virtual line 36 that connects the centers of the inlet 34 and the outlet 35 of the drainage reduction unit 30 from the side wall protrudes toward one side of the inlet 34 or the outlet 35. The second drainage collision wall 33 is provided so as to protrude from the other side wall to at least the imaginary line 36 and protrudes toward the other side of the inflow port 34 or the outflow port 35.

  Thereby, since the drainage with a strong water collision collides with the wall surface in the drain deceleration part 30 and the 1st and 2nd drainage collision walls 32 and 33, the waterflow is weakened rather than what provided only one drainage collision wall. be able to. Therefore, it is possible to suppress the drainage discharged from the drainage speed reducing unit 30 from jumping over the drainage collecting pipe joint 10 and entering the opposing side branch pipe 60.

  Further, as described above, the drainage is drained from the outlet 35 of the drainage speed reduction unit 30 by the drainage speed reduction unit 30 to weaken the water flow. For this reason, the flow of drainage stagnates at the drainage deceleration unit 30 and the inside of the horizontal branch pipe 20 becomes full. However, since the drainage speed reduction part 30 has a shape in which both side walls bulge outward and has a large volume, the stagnant drainage water can be stored in the drainage speed reduction part 30, and the drainage trap of the indoor sanitary equipment The horizontal branch pipe 20 is not filled up to the position. Therefore, the inside of the horizontal branch pipe 20 becomes full, so that the drainage of the full water reaches the drain trap of the indoor sanitary equipment, and the sealed water of the drain trap is not drained by the siphon phenomenon.

  In addition, the first and second drainage collision walls 32 and 33 are imaginary connecting at least the centers of the inlet 34 and the outlet 35 of the drainage reduction unit 30 from one or the other side wall in the drainage reduction unit 30. Since it is formed up to the position reaching the line 36, most of the waste water that has flowed into the drain speed reduction unit 30 from the inlet 34 collides with the first and second drainage collision walls 32 and 33 in the drain speed reduction unit 30. Will be. Therefore, the wastewater flowing into the drainage speed reducing unit 30 is prevented from flowing directly to the outlet 35 without colliding with the wall surface or the first and second drainage collision walls 32 and 33 in the drainage speed reducing unit 30, It becomes difficult to be discharged from the outlet 35 while the water is strong.

  If it is an above-described shape as the drain deceleration part 30, it will not specifically limit, For example, the drain collision to the drain deceleration part 30 shown in FIG.4, FIG.5 and FIG.6 is not restricted to the example shown in the said FIG. What formed the two walls 31 etc. can also be used. In addition, the side wall of the drainage deceleration part 30 is not limited to a linear shape as illustrated, and for example, an arc shape can be used.

  Moreover, the inflow port 34 of the drainage speed reducing unit 30 may be provided with a drainage guide means 37 that guides drainage to the drainage collision walls 32 and 33 that are provided near the inlet 34. In this case, the drainage with strong water entering from the inlet 34 of the drainage speed reduction unit 30 does not collide with the wall surface in the drainage speed reduction unit 30 or the first or second drainage collision walls 32, 33, and the outlet 35. Therefore, the drainage speed reduction effect by the drainage speed reduction unit 30 can be improved.

  Further, the drainage speed reducing unit 30 is provided with a drainage channel 38 that guides drainage from the inlet 34 to the outlet 35 on the bottom surface, and the bottom surface is inclined downward from both sides toward the drainage channel 38. It may be what was made. In this case, when the flow rate of the drainage in the drainage deceleration unit 30 decreases, the drainage in the drainage deceleration unit 30 flows toward the drainage channel 38 due to the gradient of the bottom surface, and along the drainage channel 38. Since the water is discharged from the outflow port 35, there is no possibility that the wastewater stays in the drainage reduction unit 30.

  The drainage channel 38 is not particularly limited as long as it has the structure as described above. For example, the drainage channel 38 having an arc cross section as shown in FIG. 9 or FIG. 4 of the first embodiment. In the cross-sectional view of (b), the drainage channel 38 is formed so as to be the lowest among the bottom surfaces. Here, the drainage flow path 38 shown in FIG. 9 is shown by a solid line in FIG. 9A, and is formed in a cross-sectional arc shape in FIG. 9B. Moreover, the drainage flow path 38 shown in FIG. 4 of Embodiment 1 is shown with the dashed-dotted line in FIG. 4 (a), and is shown with the arrow in the figure in FIG.4 (b).

  In addition, in this Embodiment, although the drainage reduction part 30 was described in full detail about the example applied to the floor drainage type toilet piping, this drainage reduction part 30 may be used for a wall drainage type toilet piping, Accordingly, it is possible to prevent the drainage from jumping into the bent portion of the wall drain type toilet pipe and entering the side branch pipe 60 facing the drainage.

  The technical scope of the present invention also includes a drainage reduction member provided with the drainage reduction part 30 provided in the drainage system 1 as shown in each of the above-described embodiments.

The drainage system in Embodiment 1 of this invention is shown, Fig.1 (a) is a side view, FIG.1 (b) is a fragmentary sectional view. The drainage deceleration part in Embodiment 1 of this invention is shown, Fig.2 (a) is a horizontal sectional view, FIG.2 (b) is the sectional view on the AA line in Fig.2 (a). It is a cross-sectional perspective view which shows the lower half of the drainage deceleration part shown in FIG. The other example of the drainage deceleration part in Embodiment 1 of this invention is shown, Fig.4 (a) is a horizontal sectional view, FIG.4 (b) is the sectional view on the AA line in Fig.4 (a). It is a horizontal sectional view showing still another example of the drainage speed reducing portion in the first embodiment of the present invention. It is a horizontal sectional view showing still another example of the drainage speed reducing portion in the first embodiment of the present invention. It is a fragmentary sectional view which shows the other example of the drainage system in Embodiment 1 of this invention. FIG. 8A is a perspective view, and FIG. 8B is a lower half of the pipe end of the drain reduction part and the side branch pipe of the drainage system shown in FIG. It is a cross-sectional perspective view. The drainage deceleration part in Embodiment 2 of this invention is shown, Fig.9 (a) is a horizontal sectional view, FIG.9 (b) is the sectional view on the AA line in Fig.9 (a). It is the schematic which shows the piping of the toilet of the conventional wall drainage. It is the schematic which shows the piping of the toilet of the conventional floor drainage.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drainage system 10 Drainage collecting pipe joint 20 Side branch pipe 21 Horizontal part 22 Upper drainage inhibition barrier 30 Drainage reduction part 31 Drainage collision wall 32 First drainage collision wall 33 Second drainage collision wall 34 Inlet 35 of drainage reduction part Outlet 36 of the drainage reduction part Virtual line 37 connecting the centers of the inlet and outlet of the drainage reduction part Drainage guide means 38 Drainage channel 40 Toilet 50 Drainage stand 60 Opposing side branch pipe

Claims (7)

In the drainage system of a multi-layered building in which the side branch pipe that guides the drainage from the indoor hygiene facility to the drainage collecting pipe joint is connected to the drainage collecting pipe joint in a state facing or close to the other side branch pipe,
The horizontal portion of the horizontal branch pipe is provided with a drainage reduction portion having a shape in which both side walls bulge outward,
In this drainage reduction part, a drainage collision wall that protrudes from one side wall to at least a virtual line that connects the centers of the inlet and outlet of the drainage reduction part protrudes. In the drainage system of a multi-layered building in which the side branch pipe that guides the drainage from the indoor hygiene facility to the drainage collecting pipe joint is connected to the drainage collecting pipe joint in a state facing or close to the other side branch pipe,
The horizontal portion of the horizontal branch pipe is provided with a drainage reduction portion having a shape in which both side walls bulge outward,
In this drainage reduction part, a first drainage collision wall that reaches from one side wall to an imaginary line that connects at least the centers of the inlet and the outlet of the drainage reduction part is either the inlet or the outlet. A drainage system characterized in that a second drainage collision wall projecting toward the other side and extending from the other side wall to at least the imaginary line projects toward the other side of the inlet or outlet.   The drainage system according to claim 1, wherein drainage guide means for guiding drainage to the drainage collision wall is provided at an inlet of the drainage deceleration unit.   The drainage system according to claim 2, wherein a drainage guide means for guiding drainage to the drainage collision wall projecting near the inlet is provided at an inlet of the drainage deceleration unit. The drainage reduction part is provided with a drainage channel on the bottom surface that guides drainage from the inlet to the outlet,
The drainage system according to any one of claims 1 to 4, wherein the bottom surface has a downward slope from both sides toward the drainage channel.   The upper side drainage obstruction barrier which blocks the upper part of the pipe end on the side connected to the drainage collecting pipe joint is formed in the horizontal branch pipe, according to any one of claims 1 to 5. Drainage system.   A drainage reduction member comprising a drainage reduction part used in the drainage system according to any one of claims 1 to 6.

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