JPH1129965A - Drainage collecting pipe joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the blocking in a pipe by providing a stream lining plate to prevent the sidewise scattering of the drainage from a horizontal branched pipe after collision on the side of the position at which the drainages from the horizontal branch pipe collides. SOLUTION: A first stream lining plate 20 of arc-shaped section is provided along the range of approximately semi-circumference on a horizontal branch pipe socket 6 side along an upper socket 2a of an upper joint 2 of a drain collecting pipe joint. A separation guide 21 of approximately trigon shape is projected inward of the pipe. A second stream lining plate 30 is provided in an expanding manner so as to surround the drain collision position from the wall surface in the pipe toward the center of the pipe on the wall surface in the pipe opposite to the horizontal branched pipe socket 6. The drain flowing down from a riser pipe 4 flows down in a straightened condition without being scattered forward of the horizontal branched pipe socket 6 by the first stream lining plate 20. The drain collided with the wall surface of the pipe flows down without being scattered sidewise by the second stream lining plate 30. Blocking in the pipe can be prevented even when the drain lows in a stretch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain collecting pipe joint for connecting a drain horizontal branch pipe to a drain stack.

[0002]

2. Description of the Related Art In general, a drainage pipe joint of this type is provided at a body having one or a plurality of lateral branch pipe receiving ports for connecting a horizontal branch pipe, and provided at an upper portion of the body. In addition, an upper receptacle for connecting an upstream drainage stack and a lower receptacle provided at a lower portion of the body for connecting a downstream drainage stack are provided. The body is a part where the wastewater flowing down from the upstream standing pipe and the wastewater flowing from the horizontal branch pipe merge, so it is necessary to smoothly flow a large amount of wastewater. The taper pipe portion having a smaller diameter is provided between the body and the lower receiving port.

[0003]

However, in a so-called slim type drain collecting pipe joint in which the body part of the trend has been reduced in size in recent years, when a large amount of urinal drainage containing, for example, filth flows from the horizontal branch pipe at a stretch, There is a case where the inside of the pipe is closed by colliding with the opposing inner wall surface. If the pipe flows down in this closed state, pressure fluctuation occurs in the pipe. If this pressure fluctuation is large, it may cause a trouble such as breakage of the drain trap.

Accordingly, an object of the present invention is to provide a drainage pipe joint which does not cause blockage in the pipe even when toilet drainage or the like flows in at once.

[0005]

For this reason, the drainage pipe joint according to the first aspect of the present invention is characterized in that the drainage pipe joint is located on the inner wall surface of the pipe opposite to the horizontal branch pipe receiving port and at the side where the horizontal branch pipe drainage collides. A rectifying plate is provided for preventing lateral branch pipe drainage from scattering to the side after collision.

According to this drain collecting pipe joint, even if the toilet flush drained from the horizontal branch pipe collides with the opposing wall surface, the rectifying plate is provided on the side so that it does not scatter to the side. , Thereby preventing blockage in the pipe and preventing or minimizing pressure fluctuations in the pipe,
As a result, troubles such as trap opening can be prevented.

[0007] The drainage collecting pipe joint according to claim 2 is the drainage collecting pipe joint according to claim 1, wherein the current plate is provided on the side where the receiving port of the other horizontal branch pipe is located. .

According to this drain collecting pipe joint, similarly to the above, it is possible to prevent the inside of the pipe from being clogged, and also prevent the drain water that has vigorously collided with the opposed inner wall surface from flowing back to another horizontal branch pipe receiving port.

The drainage collecting pipe joint according to claim 3 is the drainage collecting pipe joint according to claim 1, wherein the rectifying plate is located at the same position as the ventilation adjusting protrusion for generating a swirling flow with respect to the position around the pipe axis. It is characterized by having been provided.

According to this drainage joint, drainage of the horizontal branch pipe is efficiently guided to the ventilation adjusting protrusion by the flow straightening plate, so that a swirling flow is efficiently generated.

According to a fourth aspect of the present invention, there is provided a drainage collecting pipe joint, in which a straightening plate having an arc-shaped cross section is formed along the upper receiving port of the standing pipe so as to hang down toward the receiving port side of the horizontal branch pipe. It is characterized by having been provided.

According to the drainage pipe joint, the drainage drainage (drainage flowing down through the drainpipe) converges and flows down by the flow straightening plate, so that the drainage drainage blocks the front of the horizontal branch pipe receiving port in the inflow direction. This prevents a smooth inflow from the lateral branch pipe.

According to a fifth aspect of the present invention, there is provided a drainage collecting pipe joint according to the fourth aspect of the present invention, wherein a branching guide for branching left and right drainage of the standing pipe flowing down is provided at the center in the circumferential direction of the current plate. It is characterized by having been provided.

According to this drain collecting pipe joint, since the standing pipe drain is branched right and left by the branching guide above the inflow position of the horizontal branch drain, the smooth inflow of the horizontal branch drain can be promoted. .

According to a sixth aspect of the present invention, there is provided the drainage collecting pipe joint, wherein the first straightening plate having an arc-shaped cross section is provided along the upper receiving port of the standing pipe.
The convex side is provided in a downwardly inward direction toward the receiving side of the horizontal branch pipe, and the inner wall surface of the pipe facing the receiving port of the horizontal branch pipe is located at a position where the drainage flowing from the horizontal branch pipe collides. A second rectifying plate is provided on the side to prevent the drainage from scattering to the side after the collision.

According to this drain collecting pipe joint, the drainage of the vertical branch pipe is rectified by the first straightening plate, so that a smooth inflow of the drainage of the horizontal branch pipe is ensured, whereby the blockage in the pipe and the pressure fluctuation are prevented. . In addition, since the drainage of the vertical stack is rectified by the first straightening plate, the drainage of the vertical drainage can be more effectively caused to flow down to the second straightening plate. can do.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. FIG. 1 shows an example of construction using a drainage pipe joint 1 described below. The drainage pipe joint 1 is a so-called two-piece pipe joint composed of an upper joint 2 and a lower joint 3, and the lower end of the upper joint 2 is inserted into the upper receptacle 3 a of the lower joint 3 to be integrated. . The upper receiving port 2a of the upper joint 2 has an upstream standing pipe 4
Is connected, and the lower connection port 3b of the lower joint 3 is connected to the receiving port 5a of the standing pipe 5 on the downstream side.

The upper joint 2 is provided with a lateral branch pipe receiving port 6 to which a toilet 8 is connected via a horizontal branch pipe 7. On the other hand, the lower joint 3 also has a horizontal branch pipe receiving port 9.
Although not shown, a horizontal branch pipe for miscellaneous drainage is connected to the receiving port 9.

On the inner surface of the tapered pipe portion 3c of the lower joint 3,
Vent adjustment protrusions 3d for generating a swirling flow are provided. The ventilation adjusting projections 3d, 3d are provided opposite to two locations on the inner wall surface of the tapered tube portion 3c.
Each of the tapered tube portions 3c is provided in an overhanging manner at a predetermined angle from the upper portion to the lower portion. The drained water that has flowed down is guided on the ventilation adjusting projections 3d, 3d, and becomes a swirling flow that flows down while swirling along the inner wall surface of the pipe.

In the figure, reference numeral 10 denotes a concrete slab formed with two steps in the vertical direction.
The toilet bowl 8 is directly placed on the upper side of the toilet 0, and the drainage pipe joint 1 is fixed on the lower side by backfilling. Numeral 11 is a wall separating a toilet and a pipe space.
The horizontal branch pipe 7 is piped through the wall 11.

Now, the upper joint 2 of this drainage joint 1
As shown in FIG. 2, a first rectifying plate 20 on the upstream side and second rectifying plates 30, 30 on the downstream side are provided. The first rectifying plate 20 is connected to the upper receptacle 2 of the upstream standing pipe 4.
It is formed in an arc-shaped cross section along a substantially half-circumferential area on the side of the horizontal branch pipe receiving port 6 along the line a. This first current plate is
As shown in FIG. 3, the protruding side is provided in a downwardly inward shape with the convex side facing the side branch pipe receiving port 6 side, and the lower end thereof is located at a position corresponding to substantially the upper end of the horizontal branch pipe receiving port 6 as shown in FIG. Has been reached.

At the center of the first current plate 20 in the circumferential direction, a substantially triangular pyramid-shaped flow dividing guide 21 is provided so as to protrude into the pipe. The drainage of the standing pipe flowing down from the standing pipe 4 by the first straightening plate 20 flows down in a straightened state without being scattered in front of the lateral branch pipe receiving port 6, thereby preventing backflow to the receiving port 6. At the same time, smooth inflow of the lateral branch pipe drainage flowing from the receiving port 6 is ensured.

Further, the branch pipe drainage is provided at the center of the first straightening vane 20, and the drainage of the standing pipe is branched right and left above the horizontal branch pipe receiving port 6, whereby the horizontal branch pipe drainage can flow more smoothly. You.

Next, the second rectifying plates 30, 30 are provided on the inner wall surface of the pipe facing the horizontal branch pipe receiving port 6 and at the side of the position where the drainage flowing from the horizontal branch pipe collides. Both the second straightening plates 30, 30 are formed so as to protrude from the inner wall surface of the pipe toward the center of the pipe, and are arranged so as to surround the collision position of the drainage. The second straightening plates 30, 30 prevent the drainage colliding with the inner wall surface of the pipe from scattering to the side after the collision, thereby preventing the drainage from flowing back to another horizontal branch pipe receiving port 9.

The second straightening plates 30, 30 are formed to be vertically long in a range from a height substantially in front of the horizontal branch pipe receiving port 6 to a lower end of the upper joint 2.

The first and second rectifying plates 20, 30, 3
In contrast, as shown in FIG. 3, one of the ventilation adjusting protrusions 3d, 3d is located below the first rectifying plate 20 and the other is located on the second rectifying plate 20, as shown in FIG. 3
It is located below 0,30. The relative positions of the upper joint 2 and the lower joint 3 around the pipe axis are regulated such that the first and second rectifying plates 20, 30, 30 and the ventilation adjusting protrusions 3d, 3d have the above-described positional relationship. I have.

According to the drainage collecting pipe joint 1 configured as described above, the first straightening plate 20 is provided in the upper receiving port 2a. Since there is no scattering at the front of the pipe receiving port 6 (in front of the inflow direction, inside the pipe), the drainage of the standing pipe is performed at the horizontal branch pipe receiving port 6.
Backflow is prevented, and the inflow of the horizontal branch pipe drainage from the receptacle 6 is not hindered.

A diverting guide 21 is provided on the inner surface of the first rectifying plate 20, and the diverting guide 21 divides the drainage of the vertical stack right and left just above the horizontal branch pipe receiving port 6 (in front of the downflow direction). Therefore, the branch guide 21 further promotes smooth inflow of the drainage of the horizontal branch pipe.

Further, the second rectifying plate 3 is provided on the wall surface facing the horizontal branch pipe receiving port 6 and on both sides of the collision position of the horizontal branch pipe drainage.
Since the horizontal branch pipes 0 and 30 are provided, even if the horizontal branch pipe drainage flowing through the horizontal branch pipe receiving port 6 collides with the opposing wall surface, it does not scatter to the side. Flow down. From this, blockage in the pipe is prevented, pressure fluctuation in the pipe is suppressed, and troubles such as breakage of the trap can be prevented.

Further, since the second rectifying plates 30, 30 prevent scattering to the side after the collision, the drainage of the horizontal branch pipe once flowing into the pipe joint 1 flows back to the other horizontal branch pipe receiving port 9. Is prevented.

Further, since a part of the drainage of the standing pipe flows down between the two second straightening plates 30, 30, the straightening plates 30, 30 also have a function of straightening the drainage of the standing pipe. On the other hand, the second current plate 3
The vertical drainage which does not directly flow between 0 and 30 is also rectified by the first rectifying plate 20 and the branching guide 21 has a substantially triangular pyramid shape.
It is guided between 0 and rectified.

Since the ventilation adjusting projection 3d is located below the second rectifying plates 30, 30, both the second rectifying plates 30,
The horizontal branch pipe drainage and the standing pipe drainage rectified by 30 are efficiently put on the ventilation adjusting convex portion 3d, and thereby the generation of a swirling flow can be promoted.

The applicant of the present invention conducted a drainage capacity test using the collective pipe joint 1 described above. FIG. 4 shows the result. This test was performed in accordance with the Japan Testing Center for Construction Materials (JSTM U9152T) "Method of Testing Drainage Capacity of Drainage Stack System for Apartment Houses". That is, the pressure distribution in the pipe was measured at each floor when a constant flow drainage load of 2.5 liters per second and a total of 5 liters per second was applied from the 9th and 8th floors using the 9-story drainage experimental device. In the graph of FIG. 3, a solid line indicates a change in the average value of the pressure in the pipe, a broken line indicates a change in the minimum value, and a dashed line indicates a change in the maximum value. According to this test result, the minimum value of the pipe pressure is −23.4 mmAq on the seventh floor, the maximum value is +13.7 mmAq on the first floor,
Therefore, it is satisfied that the condition is not more than ± 40 mmAq, which is a condition for not affecting the sealing of the drain trap. Thus, according to the collective pipe joint 1 of the present embodiment,
It was proved that the pressure fluctuation in the pipe was sufficiently suppressed, and thereby the drain trap could be reliably prevented from being opened.

Various modifications can be made to the embodiment described above. For example, although the configuration in which the second straightening plate 30 is provided on both sides of the collision position of the horizontal branch pipe drain is illustrated, the configuration is provided only on one side and on the side where the other horizontal branch pipe receiving port 9 is located, that is, FIG. , The upper second rectifying plate 30 may be omitted. Even with such a configuration, it is possible to prevent backflow of the horizontal branch pipe drainage (toilet bowl drainage) to another receptacle 9 (drainage port for miscellaneous drainage). Can perform functions.

From the above, when another horizontal branch pipe receiving port 9 'is arranged only on the opposite side (upper side in the figure) of the horizontal branch pipe receiving port 9 as shown by a two-dot chain line in FIG. Alternatively, the lower second rectifying plate 30 in the figure may be omitted, and only the second rectifying plate 30 in the upper part of the figure may be used. In the case where the horizontal branch pipe receiving ports 9, 9 'for miscellaneous drainage are arranged on both sides, the second straightening plates 30, 30 may be provided on both sides of the collision position of the horizontal branch pipe drainage as described above. Thus, backflow to both receiving ports 9, 9 'can be prevented, and in the case of this configuration, the largest rectifying action of drainage of the horizontal branch pipe can be obtained.

In the illustrated embodiment, the upper joint 2
And the lower joint 3 are integrated in a predetermined relationship with respect to the relative position around the pipe axis, and the so-called two-piece drainage collecting pipe joint 1 has been described as an example. However, the present invention is similarly applied to a so-called integrated drainage collecting pipe joint. Needless to say, it can be applied to.

Finally, the first current plate 20 and the second current plate 30
Although the above configuration has been described as an example, only one of them may be provided as necessary. With this configuration, blockage of the inside of the pipe can be prevented by drainage of the horizontal branch pipe or drainage of the standing pipe.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the present invention, and is a side view showing a construction example using a two-piece drainage collecting pipe joint.

FIG. 2 is a longitudinal sectional view of an upper joint.

3 is a cross-sectional view taken along the line IV-IV of FIG. 2, and is a view showing a mutual positional relationship between a first straightening plate 20, a second straightening plate 30, and ventilation adjustment protrusions 3d, 3d around a pipe axis. .

FIG. 4 is a diagram showing the results of a drainage capacity test performed using the drainage pipe joint of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drainage collecting pipe joint 2 ... Upper joint, 3 ... Lower joint 3d ... Ventilation adjustment convex part 4 ... Upright standing pipe 6 ... Horizontal branch pipe receptacle (for toilet bowl drainage) 7 ... Horizontal branch pipe 8 ... toilet bowl 9 , 9 ': Horizontal branch pipe receiving port (for miscellaneous drainage) 20: First rectifying plate 21: Dividing guide 30: Second rectifying plate

Continuation of front page (72) Inventor Seizou Kojima 17-35-3 Koyocho, Chikusa-ku, Nagoya-shi, Aichi

Claims (6)

[Claims] 1. An inner wall surface of a pipe opposed to a lateral branch pipe receiving port, which is located on a side of a position where the lateral branch pipe drainage collides, to prevent the lateral branch pipe drainage from scattering to the side after the collision. A drainage pipe joint characterized by providing a current plate. 2. The drainage collecting pipe joint according to claim 1, wherein the current plate is provided on a side where a receiving port of another horizontal branch pipe is located. 3. The drainage collecting pipe joint according to claim 1, wherein the rectifying plate is provided at the same position as the ventilation adjusting protrusion for generating a swirling flow with respect to a position around the pipe axis. Pipe fittings. 4. A drainage collection comprising a straightening plate having an arc-shaped cross section provided along an upper receiving port of a standing pipe in a downwardly inward shape with a convex side thereof facing the receiving port side of a horizontal branch pipe. Pipe fittings. 5. The drainage collecting pipe joint according to claim 4, wherein a branching guide is provided at a center in a circumferential direction of the straightening vane for branching left and right stack pipe drainage to left and right. Pipe fittings. 6. A first straightening plate having an arc-shaped cross section is provided along the upper receiving port of the standing pipe in a downwardly inward shape toward the receiving port side of the horizontal branch pipe. A second rectifying plate is provided on the inner wall surface of the pipe facing the receiving port, at a side of a position where the drainage flowing from the horizontal branch pipe collides, to prevent the drainage from scattering to the side after the collision. A drainage pipe joint characterized by the following.