JPH0252053B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a single-pipe drainage piping system used in medium- and high-rise apartment buildings, etc., in which sewage, gray water, etc. flow through the same drainage pipe. .

(Prior art) The drainage pipe configuration of single-pipe drainage piping is such that multiple drainage standpipes are connected from the upper floor to the lower floor via a drainage collection pipe that joins the sewage and miscellaneous water from the residential areas on each floor. They were connected in the form of a single drainage pipe, with the upper end open to the atmosphere, and the lower end drained into a sewer pipe, sewage tank, or other place from a horizontal drainage pipe connected through a bent pipe. . in this case,
The disadvantage of this method is that the waste water flowing down inside the drainage standpipe compresses the air at the lower end of the standpipe, creating excessive positive pressure, which can cause problems, especially on lower floors, due to blowing out from the traps of appliances. Japanese Utility Model Application No. 55-168579 discloses a system that solves the above problem by releasing excessive positive pressure to the downstream side of the horizontal drainage pipe. That is, there was a double structure in which the bend pipe and the drainage horizontal pipe were provided with an air passage and a drainage passage that communicated with each other.

(Problem to be Solved by the Invention) According to the above structure, if excessive positive pressure is generated due to the accumulation of detergent bubbles in the bend pipe or the horizontal drainage pipe, air is discharged from the ventilation path to the downstream part of the horizontal drainage pipe. However, if a water faucet phenomenon occurs at the lower end outlet of the drain collection pipe on the lowest floor, there is still a risk of problems with water blowing out from the trap. In addition, the structures of the bend pipes and drainage horizontal pipes were complicated, and the connection structure between them was also complicated. Therefore, it is an object of the present invention to more reliably prevent the trouble of blowing out from the trap and to simplify the structure.

(Means for solving the problem) The technical means is to connect a plurality of drainage standpipes 2 from the upper floor to the lower floor through a drainage collection pipe 1 that joins sewage and miscellaneous water from each floor. In the drainage pipe, which is connected in the shape of a drainage pipe, and a horizontal drainage pipe 4 is connected to the lower end of the drain pipe through a bend pipe 3, the lowermost drainage collecting pipe 1 is connected downward from the upper part in the pipe axis direction to the uneven flow reduction chamber 22. and a collection chamber 27 in sequence, and a drift partition plate 20 is provided protruding from the drift reduction chamber 22 to bias the drainage flow from above to one side of the collection room 27.
A plurality of branch pipe joints 23 and 24 are opened on the other side of the gathering room 27, and the branch pipe joint 23 provided directly below the biased flow partition plate 20 and the downstream part of the drainage horizontal pipe 4 are communicated with each other to form a ventilation pipe. It is located at the point where road 7 was formed.

(Function) According to the present invention, the waste water flowing down from the drain standpipe 2 is controlled by the uneven flow partition plate 20 of the uneven flow reduction chamber 22.
Straight flow down is obstructed, and each branch pipe 25, 2
The waste water flows down to the collecting room 27 while being biased to the same side of the pipe on the side different from the side with 6, and in the collecting room 27, it joins with sewage, gray water, etc. from the branch pipes 25 and 26, and is guided to the bend pipe 3 side. be done. If excessive positive pressure is generated due to the accumulation of detergent bubbles in the bend pipe 3 or the horizontal drain pipe 4, the positive pressure will rise into the drain collecting pipe 1 at the bottom, but the uneven flow partition The water can be discharged from the branch pipe joint 23 provided directly below the plate 20 through the ventilation pipe line 7 to the downstream part of the drainage horizontal pipe 4, and troubles of air blowing out from the trap can be prevented. Further, even if a water faucet phenomenon occurs at the outlet of the drain collecting pipe 1, excessive positive pressure can be similarly released. Furthermore, the ventilation pipe 7 is located on the opposite side of the drainage stream flowing down while being biased to one side by the biased flow partition plate 20.
Since this is open, the passage for the rising air due to positive pressure and the passage for the draining water flowing down are separated, and the rising air is smoothly guided to the ventilation pipe 7 and can be easily and reliably released. Furthermore, there is no fear that drainage water will enter the ventilation pipe line 7. Furthermore, piping can be easily performed using pipe materials with a simple structure, and the structure can be simplified.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 2 is a schematic explanatory diagram thereof. A plurality of drainage standpipes 2 are connected to form a single drainage pipe from the top to the lower floor, and a bend pipe 3 is connected to the lower end of the pipe, and a horizontal drainage pipe 4 is connected to the other end of the bend pipe 3. The downstream end of the horizontal drainage pipe 4 is guided to the chamber 5. On the other hand, the upper end portion is open to the atmosphere by connecting an elongated vent pipe 6 for communication.
Reference numeral 7 denotes a ventilation pipe line that communicates the lowermost drainage collecting pipe 1 with the downstream part of the horizontal drainage pipe 4.

As shown in FIGS. 1, 3, and 4, the drainage collecting pipe 1 is divided into an upper collecting pipe 8 and a lower collecting pipe 9, and the lower and upper ends of both collecting pipes 8 and 9 are formed by flanges. They are connected together by a joint 10. That is, a socket part 11 is provided at the upper end of the lower collecting pipe 9, a push ring 12 and a packing 13 are fitted onto the lower end of the upper collecting pipe 8, and the lower end thereof is inserted into the socket part 11. The flange portion 14 at the upper end of the flange 11 and the press ring 12 are fastened together with bolts and nuts. The upper end of the upper collecting pipe 8 is provided with an open joint 15 to which the upper drainage standpipe 2 is connected, and the lower end of the lower collecting pipe 9 is provided with an opening connected to the lower drainage standpipe 2 or bend pipe 3. A joint portion 16 is provided, and the pipe main body portion that connects both the joint portions 15 and 16 is a gathering portion of tubular bodies having a diameter larger than that of each drainage standpipe 2. The middle part of the gathering part is a large diameter cylindrical part 17, and the cylindrical part 1 is formed from the open joint part 15 at the upper end.
The upper part extending from the cylindrical part 17 to the opening joint part 16 at the lower end is a lower tapered cylindrical part 19 having a narrow upper part and a narrow lower part.

From the upper tapered cylindrical part 18 to the upper part of the cylindrical part 17, an inclined flow biasing partition plate 20 which gradually descends in one side direction, that is, in the left direction in FIG. The upper part of the partition plate 20 is formed by forming the upper tapered cylindrical part 18 inwardly in a concave shape, and the lower parts on both sides thereof are formed in the shape of tongues projecting from the inner peripheral surface. ing. As shown in FIG. 4, a substantially rectangular cutout opening 21 for draining water is formed extending from the center of the partition plate 20 to the inner peripheral surface on the left side.
Therefore, the partition plate 20 is configured to protrude from the inner circumferential surface of the collecting pipe 8 in a substantially U-shape in plan view. The partition plate 20 causes the drain flow flowing down from the upper drain standpipe 2 to drift toward one side of the inner circumferential surface of the cylindrical portion 17 as shown by arrow A, and is decelerated in the drift reduction chamber 22. is defined.

On the other side located below the partition plate 20, that is, on the inner circumferential surface of the cylindrical portion 17 on the right side in FIG. The cylindrical portion 17 that follows the drain flow from the drain standpipe 2 side that has been decelerated by the partition plate 20 and the drain flow flowing in from the side branch pipes 25 and 26 connected to the branch pipe joints 23 and 24 This is the gathering room 27 where the two meet. That is, in the opposite direction of the drainage flow from the drainage standpipe 2, which flows into one side of the collection chamber 27 through the biased flow reduction chamber 22 by the partition plate 20,
Or, on the circumferential side of the collection room 27 as far away as possible from this, a plurality of branch pipe collection parts 2 are connected to the horizontal branch pipes 21, 22, etc. connected to a toilet bowl or a gray water source.
3 and 24 are provided.

A gently sloped circumferential surface 28 with a wide top and a narrow bottom on the inner circumferential surface of the lower tapered cylindrical portion 19 is provided with blades inclined with respect to the tube axis X-X in order to guide the drainage flow from above downward while swirling it. A plurality of plates 29 are protruded at equal intervals in the circumferential direction, and the drain standpipe 2 shown by arrow A is
Drainage from the side, side branch pipes 25, 26 indicated by arrows B
The collective flow of wastewater from the pipe is guided to the lower drainage standpipe 2 or bend pipe 3 while spirally turning around the pipe axis X--X as shown by arrow C. The lower part surrounded by the sloped peripheral surface 28 directs the drainage flow from the drainage standpipe 2 and the side branch pipes 25 and 26 that are combined in the gathering room 25 to the lower drainage standpipe 2 or the bend pipe 3 side. It is configured as a turning chamber 30 that guides the object while turning it.

And the uneven flow partition plate 20 of the drain collecting pipe 1 at the bottom
In the branch pipe joint 23 located directly below,
One end of the ventilation pipe 31 is connected, and the other end of the ventilation pipe 31 is connected to the downstream part of the horizontal drainage pipe 4, forming the ventilation pipe line 7. In addition, the lowest drainage collecting pipe 1
The drainage flow shown by arrow D does not occur at the branch pipe joint 23.

The embodiment of the present invention is constructed as described above, and sewage from the toilet bowls on each floor and miscellaneous water from the kitchen and other areas flow into the collecting pipe 1 through the side branch pipes 25 and 26, and the drainage standpipe The drainage flow flowing down the drain pipe 2 and the drainage flow from the side branch pipes 25 and 26 are combined and collected in the collecting pipe 1, and are successively drained to the lower floor side.

The drainage water flowing down from the upper drainage standpipe 2 is biased toward one side of the inner circumference by the partition plate 20 of the biased flow reduction chamber 22 and flows down. That is, drain standpipe 2
Vertical drainage does not flow straight down into the collecting pipe 1 over the entire area of its large diameter part, but the drainage speed is reduced by bending and drifting due to the obstruction of the partition plate 20.
Prevents increase in air pressure inside the pipe. Also, lateral branch pipe 2
Interference due to direct collision with the inflowing waste water from 5 and 26 is eliminated, and an increase in the air pressure inside the pipe can also be prevented from this. Then, smooth and quiet merging of the lateral drainage water flowing from the lateral branch pipes 25 and 26 via the branch pipe joints 23 and 24 and the drainage water from the drainage standpipe 2 in the gathering room 27 can be expected. Furthermore, the partition plate 20 located above the communication opening of each branch pipe joint 23, 24 functions as a so-called eaves, and effectively prevents the side pipes from protruding toward the side branch pipes 25, 26. Backflow to the side branch pipes 25 and 26 can be prevented. Furthermore, since the cutout opening 21 is formed as a passage for the drainage flow from the biased flow reduction chamber 22 to the collection chamber 27, and is formed as a large notch extending from the center of the partition plate 20 to one side, there is a sufficient passage for drainage. can be ensured, there is no need to configure the collecting pipe 1 with a larger diameter,
Further, there is no need to configure the device in an irregular shape with a portion bulging outward, and the device can be configured compactly. In the gathering room 27, the drainage from the drainage standpipe 2 and the inflow drainage from the side branch pipes 25 and 26 are combined in a focused manner, and the turbulence caused by mutual interference is small, and the air pressure inside the pipe is reduced. By reducing the fluctuation, a smooth merging effect with low drainage noise can be obtained, and then the combined drainage water flows down into the swirling chamber 30 at the lowest level. This swirling chamber 30 has a cross-sectional shape that becomes narrower toward the bottom due to a gently sloped peripheral surface 28, and the sloped peripheral surface 28 is formed by a plurality of blade plates inclined with respect to the tube axis X-X direction. 29 is provided, the drainage flow is given turning ability in a predetermined direction through the guidance of each blade plate 29 at the part where the combined drainage water tends to be most dense, and around the pipe axis X-X line. The water flows down smoothly and quickly without causing a faucet phenomenon, and the opening joint 1
6 to the lower drainage standpipe 2 or bend pipe 3
It is precisely guided and flowed out to the side. At this time, the rotation by the blade plate 29 is carried out vertically through the tube axis X-X.
Since an air core can be generated along the line, a stable drainage state can be obtained without changing the air pressure inside the pipe, and drainage noise can be reduced. Also, this blade plate 29 has a sloped peripheral surface 28.
Because of the structure in which the drain is protruded from the top and bottom, combined with the provision of an appropriate inclination angle in the vertical direction, rapid draining and drainage can be reliably obtained without causing stagnation or stagnation in the drainage flow within the swirling chamber 30. Become. still,
The gentle slope of the sloped peripheral surface 28 effectively works to prevent the faucet phenomenon described above and stabilize the air pressure.

And the uneven flow partition plate 20 of the drain collecting pipe 1 at the bottom
A ventilation pipe 31 is connected to the branch pipe joint 23 immediately below, forming a ventilation pipe line 7 that reaches the downstream part of the horizontal drainage pipe 4. Therefore, harsh detergent drainage, etc. may damage the inside of the bend pipe 3 or the horizontal drainage pipe. When excessive positive pressure is generated due to the accumulation of detergent bubbles in the drain pipe 4, the positive pressure rises into the drain collecting pipe 1 at the bottom, but the arrow P in Fig. 1
As shown, the water can be discharged to the downstream part of the horizontal drainage pipe 4 through the branch pipe joint 23 and the ventilation pipe 31,
Problems with blowing out from the traps of famous appliances on lower floors can be effectively prevented. Since the branch pipe joint 23 of the ventilation pipe line 7 is opened on the opposite side of the drain flow flowing down while being biased to one side by the bias flow partition plate 20, the flow rises due to positive pressure. The air passage and the downstream drainage passage are separated, and the rising air is smoothly guided to the ventilation pipe 7. Therefore, excessive positive pressure can be easily and reliably released and removed from the trap. It is possible to reliably prevent the problem of balloons. Further, even if a faucet phenomenon occurs at the outlet of the drain collecting pipe 1, excessive positive pressure can be similarly released, and the same effect can be obtained. Furthermore, there is no possibility that the drainage water flowing down may accidentally enter the ventilation pipe 7 through the opening of the branch pipe joint 23. In addition, there is no need for pipes with a complicated structure, and piping can be easily performed using pipes with a simple structure similar to conventional pipes, thereby simplifying the structure.

Although all of the drainage manifold pipes 1 are shown to have the same structure, the drainage manifold pipes 1 having a conventional structure may be used as the drainage manifold pipes 1 other than the lowest one, and the present invention is not limited to that of the embodiment. Furthermore, the vane plate 29 may be omitted in the drain collecting pipe 1 at the lowermost portion.

In addition, in the piping in the above example, when the ventilation pipe line 7 was not provided, the maximum pressure value that occurred on the lower floor when harsh detergent waste water was loaded was 40 mmAq, and in the example of the present invention, the maximum pressure value was 40 mmAq. is 11
It was mmAq. Further, as shown in FIG. 5, in the case where a ventilation pipe 31 was connected to the upper part of the drain collecting pipe 1 at the bottom to form a ventilation pipe line 7, the maximum pressure value was 40 mmAq. Therefore, it is clear from the experimental results that configuring the ventilation pipe line 7 in communication with the collecting pipe 1 is more effective.

(Effects of the Invention) According to the present invention, since the ventilation pipe is formed from the branch pipe joint immediately below the drifting partition plate of the lowermost drainage collecting pipe to the downstream part of the horizontal drainage pipe, severe detergent drainage, etc. As a result, even if excessive positive pressure occurs inside the bend pipe or inside the horizontal drainage pipe, it can be released to the downstream part of the horizontal drainage pipe through the ventilation pipe line, effectively eliminating the problem of blowing out from the trap of the famous appliance on the lower floor. It can be prevented. In addition, since the branch pipe joint of the ventilation pipe is opened on the opposite side of the drainage stream flowing down while being biased to one side by the deflection partition plate,
Positive pressure separates the rising air passage and the descending drainage flow passage, allowing the rising air to be smoothly guided to the ventilation pipe, thus easily and reliably escaping excessive positive pressure. This makes it possible to reliably prevent troubles from blowing out from the trap. Further, even if a water faucet phenomenon occurs at the outlet of the drainage collecting pipe, excessive positive pressure can be similarly released, and the same effect can be obtained. Furthermore, there is no possibility that the drainage water flowing down may accidentally enter the ventilation pipe. Further, it has the advantage that it can be easily piped with a pipe material of a simple structure similar to the conventional one, and the structure can be simplified.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a main part showing an embodiment of the present invention, Fig. 2 is a schematic explanatory diagram showing an embodiment of the invention, Fig. 3 is an enlarged view of the main part, and Fig. 4 is a line taken from Fig. 1. A cross-sectional view in the direction of arrows, and FIG. 5 is a side view of a main part showing a comparative example. 1... Drain collecting pipe, 2... Drain stand pipe, 3... Bend pipe, 4... Drain horizontal pipe, 7... Ventilation pipe, 20
...Drift flow partition plate, 22 ...Drift flow reduction chamber, 23...
Branch pipe junction, 24...Branch pipe junction, 27...Collection room.

Claims (1)

[Claims] 1 A plurality of drainage standpipes 2 are connected in a single drainage pipe shape from the upper floor to the lower floor through a drainage collection pipe 1 that joins sewage, gray water, etc. from each floor, and a bend pipe 3 is installed at the lower end of the drainage standpipe 2. In a drainage pipe in which horizontal drainage pipes 4 are connected for communication, the drainage collecting pipe 1 at the bottom is sequentially provided with a drifting reduction chamber 22 and a collection chamber 27 from the upper part to the lower part in the axial direction of the pipe. A biased flow partition plate 20 for biasing the drainage flow from above to one side of the collection chamber 27 is provided protrudingly, and a plurality of branch pipe joints 23 and 24 are opened on the other side of the collection chamber 27, and the bias flow partition plate 20 Branch pipe joint 23 provided directly below
and the downstream part of the horizontal drainage pipe 4 to communicate with each other to form a ventilation pipe line 7.
Drainage piping characterized by forming a.