JPH0376942A - Collecting pipe joint - Google Patents

Abstract

PURPOSE:To provide strong turning force for drainage to prevent a drain trap from flooding by twisting subsequently an inlet pipe downward, and leading drainage to a spirally bent joint of each side of a water collecting section from risers and branch pipes. CONSTITUTION:An inlet pipe 13 is formed as a circumferential wall surface 13a which is in the shape of a projection and recession along the circumferential direction and is subsequently twisted downward, and a water collecting section 12 is also formed so that each side is bent spirally with the same forms as that thereof. Drainage flowing down the inside of the inlet pipe 13 from risers is led by each projected and recessed circumferential wall surface 13a to change into turning stream during the flowing-down. Turning force is also given to drainage flowing into a large diameter section 11 from branch pipes through connections 14 of the branch pipes, and it is led by a wing body 12d to change into further powerful turning stream to discharge. According to the constitution, the drainage forms the core of air passing through in each riser, a variation of air-pressure in a drain-pipe, and the flooding of a drain trap can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a collector pipe joint used to be connected to a drainage standpipe or branch pipe installed in a mid-rise or high-rise building, etc.
More specifically, the present invention relates to a collecting pipe joint that prevents the water sealing effect of a drain trap from being impaired by ensuring ventilation within the drain pipe.

(Prior Art) For example, drain pipes installed in mid-rise and high-rise buildings conventionally include stand pipes 20 arranged vertically so as to pass through each floor, as shown in FIG. It is composed of a branch pipe 30 horizontally arranged in the vertical direction, and a collecting pipe joint 60 to which the stand pipe 20 and the branch pipe 30 are connected.

The conventional collector pipe joint 60 includes an inflow pipe 65 connected to the upper standpipe 20, and a large diameter pipe in which the lower part of the inflow pipe 65 is housed inside so that wastewater can flow through the inflow pipe 65. Part 6
1, and a water collecting part 62 which is connected to the lower end of the large diameter part 61 and has a reduced diameter at the lower end.

A lower standpipe 20 is connected to the lower end of the water collecting portion 62 . The large diameter portion 61 has a cylindrical shape, and the water collecting portion 62 connected to the large diameter portion 61 is formed in the shape of a funnel with a circular cross section whose diameter gradually decreases toward the bottom. . Large diameter part 61
A pair of branch pipe connecting parts 63 and 63 are disposed at positions facing each other in the upper part of the pipe so as to project outward, and a branch pipe 30 is connected to each branch pipe connecting part 63, respectively. Ru.

The waste water that has flowed into the large diameter section 61 from the inflow pipe 65 flows into the large diameter section 6.
1 and the inner circumferential surface of the water collection part 62, and the drainage water flowing through the branch pipe 30 flows into the large diameter part 61 via the branch pipe connection part 63, and these drainage water is collected. Water is collected in the water section 62. The drainage water that has flowed into the water collection section 62 in this manner passes through the drain port 62a at the lower end of the water collection section 62 and flows into the lower standpipe 20.

In the conventional collector pipe joint 60 having such a configuration, when a large amount of wastewater flows intensively from the standpipe 20 and each branch pipe 30,
This drainage collides with the lower inner circumferential surface of the water collection part 62 and bounces back, and due to its momentum, the rebounded drainage does not flow into the drain port 62a, but flows over the drain port 62a and along the inner circumferential surface on the opposite side. A phenomenon occurs in which the temperature rises. For this reason,
- The drainage water that rises up the inner peripheral surface beyond the drainage port 62a and the drainage water that flows down the inner peripheral surface of the water collection part 62 are collected in the water collection part 62.
There is a possibility that they may merge at the lower end portion of the drain port 62a and temporarily block the drain port 62a.

In this way, by temporarily blocking the drain port 62a of the collector pipe joint 60, the standpipe 20 and the branch pipe 30 installed in the building, connected to the collector pipe joint 60, and in communication state. When a drain pipe constructed by the above is temporarily blocked by drainage water, the air layer within the drain pipe is no longer communicated between the upper and lower sides. In this state, the collector pipe joint 60
When the drainage water in the water collecting part 62 flows down into the lower standpipe 20, the inside of the drainage pipe upstream of the collecting pipe joint 60 temporarily becomes negative pressure. As a result, there is a possibility that the water in the traps of various sanitary kitchen equipment connected to each branch pipe 30 will break, and the bad odor in the drain pipe will flow back into each room. Moreover, since the drainage water flowing down the standpipe 20 has a high flow velocity on the lowest floor, there is a possibility that a jumping phenomenon may occur at the bent portion of the drain pipe on the lowest floor, thereby clogging the pipe. This also creates a negative pressure inside the standpipe 20, which may cause the water in the trap to break.

In order to solve these problems, conventional techniques have been used to create a swirling flow by applying a swirling force to the drainage water flowing down inside, and by forming an air core in the axial center of the swirling flow, the drainage outlet in the water collection section Various types of collector pipe joints have been proposed to prevent blockage.゛For example, Japanese Patent Publication No. 53-32614, Japanese Patent Publication No. 57-49798, Japanese Patent Publication No. 62-288
Publication No. 795, etc. discloses a collecting pipe joint in which a spiral blade body is protruded from the inner surface of the lower part of the inflow pipe, and in such a collecting pipe joint, the wastewater flowing from the standpipe into the inflow pipe is ,
The impeller disposed in this inflow cylinder creates a swirling flow that flows into the water collection section, maintains the swirling state, and flows out from the drainage port of the water collection section, so that the drainage port is blocked by the drainage. This will be prevented.

<Problems to be Solved by the Invention> However, when the blades are disposed in a relatively small-diameter inflow tube that allows wastewater to flow down into the water collection part, the blades protrude from the inner surface of the inflow tube. There is a risk that dust, fiber debris, etc. contained in the waste water will be caught and accumulated on the blade body of the drain pipe, and the inlet tube may be clogged with the fiber debris. Another drawback is that the wastewater hits the blade body with great force, which causes impact noise. Furthermore, since it is necessary to provide a complex-shaped impeller on the inner surface of the small-diameter inlet tube, there is also the disadvantage that manufacturing is not easy and economical efficiency is impaired.

The present invention is intended to solve the above-mentioned conventional problem, and its purpose is to be able to apply a strong swirling force to the drainage water, thereby ensuring that the drainage water becomes a swirling flow, and the standpipe to which it is connected. To provide a collecting pipe joint that can prevent a large negative pressure from being generated in a drain pipe such as a drain pipe or a branch pipe, and prevent the water sealing effect of a drain trap from being impaired. Another object of the present invention is to provide a collecting pipe joint that can be used stably over a long period of time without the risk of clogging the inside of the inflow tube with fiber waste. Still another object of the present invention is to be able to reduce noise caused by drainage water flowing through the interior;
Another object of the present invention is to provide a collector pipe joint that is easy to manufacture and can be manufactured at relatively low cost.

(Means for Solving the Problems) A collecting pipe joint of the present invention is a collecting pipe joint that is connected to a vertically arranged standpipe and a horizontally arranged branch pipe, and which is connected to a vertically arranged vertical pipe and a horizontally arranged branch pipe. a large diameter section provided with a branch pipe connection section to which the pipe is connected; and a lower section connected to the upper standpipe so that the waste water flowing through the standpipe flows into the large diameter section. The lower peripheral wall surface has an uneven cross section along the circumferential direction, and as each unevenness becomes lower, the inflow is twisted in the circumferential direction. a pipe, and a water collection part that is connected to the lower end of the large-diameter part and has a diameter that gradually decreases toward the bottom and has a guide means that gives a swirl to the drainage water flowing down along the inner surface; The guide means is a blade body disposed along the inner circumferential surface of the water collection part having a circular cross section and inclined with respect to the axis of the water collection part, or as the guide means becomes lower. Each side surface of a polygonal water collection part is twisted in the circumferential direction in turn, thereby achieving the above purpose.

(Example) The present invention will be described below with reference to Examples.

The collecting pipe joint according to the first embodiment of the present invention is shown in FIGS. 1 and 2.
As shown in the figure, it is used by being connected to a standpipe 20 arranged vertically in a multi-story building and a branch pipe 30 arranged horizontally along each floor of the building. The collecting pipe joint 1G
1 includes a cylindrical inflow tube 13 connected to the upper standpipe 20 and into which wastewater flows from the standpipe 20, and a pair of branch pipe connection parts 14 and 1 that accommodate the lower part of the inflow tube 13 inside.
4, and a water collection part 12 integrally connected to the lower end of the large diameter part 11.

The large diameter portion ll includes a cylindrical side surface portion 11b and a cylindrical side surface portion 11b.
It has a top surface portion 11a that covers the top end surface of the side surface portion 1.
A pair of branch pipe connecting portions 14 and 14 are disposed in 1b, facing each other and projecting horizontally outward. A branch pipe 30 horizontally disposed within the building is connected to each branch pipe connection portion 14 .

The inflow tube 13 is, for example, as shown in FIG. 3(a),
Peripheral wall surface 13a with an uneven cross-sectional shape along the circumferential direction
have. The peripheral wall surface 13a of the inflow tube 13 has, for example, a star shape with eight protrusions projecting outward, and as the uneven portions move toward the lower side, they are sequentially twisted in the circumferential direction. It has become.

The inlet tube 13 is fitted into a through hole 11c having a star-shaped cross section and formed in the center of the upper surface 11a so that its upper end is located above the upper surface 11a of the large diameter section 11. . A flange portion 13c is provided at the upper end of the inflow tube 13, and the lower end of the upper standpipe 20 is connected to the flange portion 13c via, for example, a rubber packing.

The lower end of the inflow tube 13 is connected to each branch pipe connection portion 14 of the large diameter portion 11.
It is located below the installation position, and each branch pipe connection part 14
A middle part of the peripheral wall surface 13a of the inflow pipe L3 is opposed to the inflow cylinder L3.

The water collection part 12 connected to the lower end of the large diameter part 1.1 has a hexagonal cross section, as shown in Figure 3 (b) and (C), and gradually In order to reduce the diameter, the width of each of the six side surfaces 12b gradually decreases toward the bottom. Moreover, the water collecting portion 12 is sequentially twisted in the circumferential direction toward the lower side, and each side surface 12b is curved in a spiral shape. A drain port 1 is provided at the lower end of the water collecting portion 12.
2a is formed.

A vertical standpipe connection part 15 is connected to the lower end of the drain port 12a, and the upper end of the standpipe 20 disposed below is fitted onto the standpipe connection part 15. Ru.

A corner portion 12c between each side surface 12b is twisted with respect to the axis of the water collecting portion 12. Inwardly protruding blade bodies 12d are arranged at every other corner of each corner portion 12c along each corner portion 12c. Each blade body 12d is in a state of protruding into the water collecting part 12, but the amount of protrusion becomes smaller as it goes downward, and its lower end is connected to the drain port 12a.
It is flush with the inner peripheral surface. At the upper end of the water collecting section 12, each tip of each blade body 12d that projects inward does not project inward beyond the circumferential surface position of the drain port 12a at the lower end of the water collecting section 12. Therefore, each blade body 12d is entirely connected to the drain port 12a.
It does not protrude inward from the inner peripheral surface of.

The twisting angle between the upper end and the lower end of the water collecting portion 12 twisted in the circumferential direction is not limited, but can be set to about 30 to 90 degrees, for example, and in this embodiment, As shown in Figures 3(b) and (C), approximately 45
It has been twisted many times.

Next, the operation of the collector pipe joint 1° constructed in this manner will be explained.

As shown in FIG. 4, the waste water flowing into the inflow tube 13 from the standpipe 20 is guided by the inner surface of the peripheral wall surface 13a having an uneven cross section and flows down. The peripheral wall surface 13a of the inflow pipe 13 is twisted in the circumferential direction as it goes downward, so that the waste water flowing down inside the inflow pipe 13 is It is guided by the uneven peripheral wall surface 13a to form a swirling flow, and flows out from the lower end thereof.

On the other hand, the large diameter portion 11 is connected from the branch pipe 30 via the branch pipe connection portion 14.
The waste water flowing into the interior collides with the peripheral wall surface 13a of the inflow cylinder 13, and is guided by the uneven peripheral wall surface 13a of the inflow cylinder 13 to flow down. As a result, a swirling force is also applied to the drainage water flowing down while being guided by the irregularities on the outer surface of the peripheral wall surface 13a of the inflow tube 13, and the drainage water also flows down into the water collection part 12 as a swirling flow.

The waste water discharged from the inflow cylinder 13 and the waste water flowing in from the branch pipe connection part 14 flow into the water collection part 12 as a swirling flow, and the waste water flows through each spirally curved part of the water collection part 12. It is guided by the side surface 12b and a turning force is applied. At this time,
The drainage guided to each side 12b is a part of a predetermined corner between the sides 12b! An even stronger turning force is applied by being guided by the blade body 12d disposed at 2c. Each blade body 12d
regulates drainage that tends to spread outward due to centrifugal force,
The drainage is made into a predetermined swirling flow without being disturbed. Each blade 1
2d also applies when the amount of drainage in the water collection section 12 increases.
To surely give turning force to the drainage. Therefore, the waste water in the water collection part 12 is reliably discharged from the drain port 12a as a swirling flow.

In this way, the waste water flowing down inside the water collection section 12 becomes a swirling flow, and an air core is formed at the axial center of the water collection section 12.
This air core communicates with each of the upper and lower standpipes 2°.

None of the blade bodies 12d disposed in the water collection section 12 protrudes inward from the inner circumferential surface of the drain port 12a at the lower end, so that dirt, etc. during drainage may not reach each blade body 12d. There is almost no risk of locking, and the water collection part 12 is connected to the inlet tube 1.
Since the blades are connected to the large-diameter portion 11 having a diameter larger than 3, even if dust or the like is caught on each blade body 12d, the dust or the like can be easily removed.

In addition, each blade body arranged in the water collection part 12! 2d does not need to be disposed along the entirety of each corner portion 12c of the water collecting portion 12, and may be disposed along a part of each corner portion 12c.

Such a collector pipe joint 10 is made of, for example, polychlorinated t'-
Manufactured from plastic (PVC), fiber reinforced plastic (FRP), cast iron, etc. In the above embodiment, the inflow tube 13 and the upper standpipe 20 are connected by a flange through a rubber gasket, but the receiver may be connected by a port and an insertion port. Standpipe connection part 1 connected to the lower end of the water collection part 12
5 and the lower standpipe 20, and each branch pipe connection part 14 and the branch pipe 3
0, the flange connection or receiver is also connected using the opening and the socket.

In the above embodiment, the blade body 12d is disposed inside the polygonal water collection part 12 that is twisted in the circumferential direction as it goes toward the bottom. If the polygonal shape is sequentially twisted in the circumferential direction toward the bottom, each side surface 12b of the water collecting section 12 can be used for drainage even if the blade body 12d is not disposed inside the water collecting section 12. This serves as a guiding means and applies a turning force to the drainage water flowing down along each side surface 12b. The cross-sectional shape of the water collecting portion 12 is not limited to a hexagonal shape, but may be a triangular shape, a pentagonal shape, or the like.

In addition, in order to apply a swirling force to the drainage water flowing into the water collection part 12, the water collection part 12 needs to have a polygonal shape that is sequentially twisted in the circumferential direction toward the bottom. Not,
The water collection part 12 has a circular cross-section whose diameter gradually decreases as it moves downwards, and an axial center of the water collection part 12 is provided on the inner circumferential surface of the water collection part 12 as a guide means for applying a turning force to the drainage water. A configuration may also be adopted in which the blade body is arranged in a state of being inclined with respect to the blade body.

A collecting pipe joint according to a second embodiment of the present invention is shown in FIGS. 5 and 6. The collector pipe joint of this embodiment has an inflow pipe 13
The peripheral wall surface 13a has an uneven cross-sectional shape along the circumferential direction, and furthermore, the uneven section gradually becomes twisted in the circumferential direction toward the lower side. The lower part of the peripheral wall surface 13a of the inflow cylinder 13 is in a state in which the diameter gradually increases as it goes downward. The rest of the configuration is the same as that of the collector pipe joint of the first embodiment described above, so the explanation will be omitted.

In the collecting pipe joint 10 of the present embodiment, the waste water that has flowed into the inflow tube 13 is transferred to the peripheral wall surface 13a which is uneven along the circumferential direction.
The flow flows down while being given a swirling force along the inner surface, and when flowing down the lower part, the diameter of the lower part gradually increases as it moves downward, so that the swirling force is applied from the lower end of the lower part. The water is spread radially and flows down into the water collecting section 12 in a state where the water is applied. For this reason, swirling force is easily applied to the drainage water within the water collection section 12. Further, the wastewater flowing from the branch pipe 30 into the large diameter portion 11 via the branch pipe connecting portion 14 collides with the outer surface of the uneven peripheral wall surface 1ffa of the inflow tube 13, and flows into the uneven outer surface of the peripheral wall surface 13a. flowing down along the A swirling force is applied to the wastewater while flowing down, and the wastewater to which the swirling force has been applied at the lower part of the inflow pipe 13 is moved by the lower part of the inflow pipe 13 whose diameter gradually increases as it goes downward. ,
radially diffused. In this way, the drainage water, which is radially diffused while being applied with a turning force, has a hexagonal cross section, similar to the collecting pipe joint of the first embodiment, and is gradually twisted toward the bottom. The water flows into the water collection part lz, which is in a state where the diameter is gradually reduced, and each side surface of the water collection part 12! 2b, the flow becomes a swirling flow, and is discharged from the drain port 12a with an air core formed at the axial center.

In the collecting pipe joint of this embodiment as well, if the water collecting portion 12 has a polygonal cross-section that is twisted in the circumferential direction as it approaches the lower side, there is no particular need to provide the blades 12d. In addition, the water collection part 12 does not need to have such a shape; for example, the water collection part may have a circular cross section that gradually decreases in diameter toward the bottom to apply a turning force to the inside of the water collection part. It is also possible to have a configuration in which a blade body is provided for this purpose.

(Effects of the Invention) As described above, in the collecting pipe joint of the present invention, the drainage flowing into the water collection part from the standpipe is given a swirling force by the inflow tube, so it flows into the water collection part and collects the water. While flowing down along the inner surface of the water part, it is likely to be turned into a swirling flow, and the water collecting part is turned into a strong swirling flow. An air core is formed in the axial center of the waste water, and the inertia of the air core is maintained as it flows out. Therefore, the drainage can form an interconnected air core in each standpipe connected above and below the collecting pipe joint. As a result, even if a large amount of wastewater from sanitary kitchen drainage equipment etc. flows into the collecting pipe joint, the air core is always in communication with the shaft center of the drain pipe, so the air inside the drain pipe is Pressure fluctuations can be reduced and trap water rupture can be reliably prevented. Since no protruding object such as a blade is disposed inside the inflow cylinder, there is no fear that dirt or the like will accumulate in the inflow cylinder and block the inside.

4. Figure 1 is a perspective view showing the first embodiment of the collector pipe joint of the present invention, Figure 2 is a longitudinal sectional view thereof, and Figures 3 (a, ), (b), and (C). are line A-A, line B-B, and C in Figure 2, respectively.
-C line, FIG. 4 is a schematic diagram for explaining its operation, FIG. 5 is a longitudinal sectional view showing a second embodiment of the collecting pipe joint of the present invention, and FIG. A cross-sectional view taken along the line A-A, and FIG. 7 is a vertical cross-sectional view of a conventional collector pipe joint.

10... Collection pipe joint, 11... Large diameter part, 12...
Water collection part, 12a... Drain port, 12b... Side, 12
c...Corner part, 12d...Blade body, 13...
Inflow cylinder, 13a... peripheral wall surface, 14... branch pipe connection part,
20... Standpipe.

that's all

Claims (1)

[Scope of Claims] 1. A collector pipe joint that is connected to a vertically arranged standpipe and a horizontally arranged branch pipe, the branch pipe connecting portion to which the branch pipes are connected. and a cylindrical shape with a lower part housed in the large diameter part so that the waste water connected to the upper standpipe and flowing through the standpipe flows into the large diameter part. The lower peripheral wall surface has an uneven cross section along the circumferential direction, and as each unevenness becomes lower, an inlet tube is twisted in the circumferential direction in turn, and the lower end of the large diameter portion. a water collection part having a guide means connected to the drain, the diameter of which is sequentially reduced toward the lower side, and which gives a swirl to the drainage water flowing down along the inner surface, and the guide means includes: a blade body disposed in a state inclined with respect to the axis of the water collection part along the inner circumferential surface of the water collection part having a circular cross section;
Or a collector pipe joint, which is each side of a polygonal water collection part that is twisted in the circumferential direction toward the bottom.