JPH028427A - Assembly pipe joint - Google Patents

Abstract

PURPOSE:To maintain the effect of a water seal by providing a large diameter section, a polygonal inflow cylinder which is connected to the large diameter section and a section of the lower part of which is twisted in the circumferential direction subsequently along the vertical direction, and a collecting section connected to the lower end thereof. CONSTITUTION:Drainage to be flowed into an inflow cylinder 13 from a riser 20 flows down along a side 13c curved in the shape of a spiral of the lower part 13a of the inflow cylinder 13. Then, the drainage flows down swiveling along a corner section 13d while it was flowing down along each side 13c. After that, the drainage flowing down through the inflow cylinder 13 is flowed from an outlet 12a to the inside of a large diameter section 1 and a collecting section 12 while maintaining a swiveling state, and it flows down along the circumferential surface of the large diameter section 1 and collecting section 12. Accordingly, an air axis is formed in the axial center section of assembly pipe joint 10, so that a variation in air pressure of the inside of a drain pipe can be reduced to prevent a water leakage of a trap.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a collector pipe joint used to be connected to a drainage standpipe installed in a middle-to-high-rise building, etc. 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.

(Prior art) For example, drain pipes installed in mid-to-high-rise buildings are conventionally
As shown in FIG. 8, a standpipe 20 is arranged vertically so as to pass through each floor, a branch pipe 70 is arranged horizontally in each floor, and the standpipe 20 and the branch pipe are arranged horizontally in each floor. 70 and a collecting pipe joint 60 connected to the pipe 70.

The conventional collecting pipe joint 60 includes an inflow tube 65 connected to the upper standpipe 20, and a large diameter portion 61 in which the inflow tube 65 is housed so that waste water can flow through the inflow tube 65. and,
It has a water collection 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 6z connected to the large diameter portion is formed in the shape of a conical funnel whose diameter gradually decreases toward the bottom. A pair of branch pipe connecting parts 63 and 63 are disposed at mutually opposing positions in the upper part of the large diameter part 61 so as to project outward, respectively.

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 70 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 waste water collected in the water collection section 62 in this way 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 collecting pipe joint 60 having such a configuration, when a large amount of wastewater flows intensively from the standpipe 20 and each branch pipe 70,
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 70 installed in the building and connected to the collector pipe joint 60 are in communication. The drain pipe constituted by the above is temporarily blocked by the drainage, and therefore, the air layer within the drain pipe is no longer communicated between the upper and lower sides. In such a state, when the waste water in the water collection part 62 of the collecting pipe joint 60 flows down, the inside of the drain pipe on the upstream side of the collecting pipe joint 60 temporarily becomes negative pressure. As a result, there is a risk that the water in the traps of various sanitary kitchen equipment connected to each branch pipe 70 will break, and the bad odor in the drain pipe will flow back into each room. Also,
When the wastewater flowing down the standpipe 20 flows downward along the pipe wall, the water flow becomes faster, and there is a possibility that a jumping phenomenon may occur at the bent part of the drainpipe 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 such problems, conventional methods have been used to generate a swirling flow in the drainage water flowing down inside, thereby preventing the drainage outlet in the water collection area from being blocked by the drainage water, and
Collecting pipe joints having various ventilation structures have been proposed that prevent drain ports from being blocked even by reducing the vertical velocity of the drain flow. For example, Tokuko Sho 53-3
No. 2614, Japanese Patent Publication No. 57-49798, and Japanese Patent Application Laid-open No. 62-288795 propose a collecting pipe joint in which a spiral blade body is protruded from the inner surface of the lower part of the inflow pipe. In a collector pipe joint, the wastewater flowing from the standpipe into the inflow cylinder becomes a swirling flow due to the action of the impeller arranged in the inflow cylinder and flows out from the drain port, so the drain port is not blocked by the waste water. be prevented from being

(Problem to be Solved by the Invention) However, if the blade body is disposed inside the inflow cylinder, since the blade body protrudes from the inner surface of the inflow cylinder, dust contained in the waste water may be absorbed into the blade body. There is a risk that fibers, fibers, etc. may get caught and accumulate, and the inlet tube may become clogged with these fibers, etc. 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 blade on the inner surface of the inflow tube, there is a drawback that manufacturing is not easy and economical efficiency is impaired.

The present invention is intended to solve the above-mentioned conventional problems, and its purpose is to seal the drain trap by preventing large negative pressure from being generated in the drain pipes connected to it, such as stand pipes and branch pipes. In addition to preventing loss of effectiveness,
To provide a collecting pipe joint in which there is no fear that fiber waste etc. may become clogged inside.

Another object of the present invention is to provide a collector pipe joint that can reduce noise caused by drainage water flowing inside the joint and can be manufactured easily and 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 a pipe is connected; and a lower section connected to the standpipe and provided within the large diameter section so that wastewater flowing through the standpipe flows into the large diameter section. is housed in the large diameter part, and the polygonal inflow pipe whose lower cross section is sequentially twisted in the circumferential direction along the vertical direction and is connected to the lower end of the large diameter part, It has a water collection part whose lower end part has a reduced diameter, thereby achieving the above object.

(Function) In the collector pipe joint of the present invention, the inner surface of the inflow cylinder has a polygonal cross-sectional shape, and is twisted sequentially in the circumferential direction toward the bottom, so that each side of the inflow cylinder has a spiral shape. It is curved in a shape. Therefore, the wastewater flowing from the standpipe into the inflow tube flows down along the spirally curved inner surface of the inflow tube, intersects diagonally at the vertically lower part of each side surface, and sequentially circumferentially in the axial direction. It concentrates on a part of each corner of a spiral shape that is twisted in a direction. As a result, a swirling force is applied to the drainage water flowing down along a part of the corner, and the drainage water becomes a swirling flow and flows down along the inner circumferential surface of the large diameter part and the water collecting part. As a result, the waste water collected in the water collection part also becomes a swirling flow, an air core is formed in the axial center part, and the water flows out from the drainage port of the water collection part without blocking it.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 1 and 2, the collector pipe joint 1O according to the first embodiment of the present invention is connected to a standpipe 20 vertically installed in a building to drain water from the standpipe 20. an inflow tube 13 into which the inflow tube 13 is introduced, a cylindrical large diameter section 11 in which the lower part of the inflow tube 13 is housed and provided with a pair of branch pipe connection parts 14 and 14, and a lower end of the large diameter section 11. It has a truncated conical water collecting part 12 which is integrally connected to the water collecting part 12 and whose lower end part is gradually reduced in diameter.

The large diameter portion 11 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 (not shown) horizontally arranged within the building is connected to each branch pipe connection portion 14, respectively. One through hole lie is formed in the center of the upper surface portion 11a of the large diameter portion 11, and the inflow cylinder 13 is fitted into this through hole lie.

The lower part 13a of the inflow cylinder 13 is housed in the large diameter part 11, and the upper part 13b is located above the upper surface part 11a of the large diameter part 11.

A truncated funnel-shaped water collection part 12 is connected to the lower end of the large diameter part 11, and a drainage port 12 is provided at the lower end of the water collection part 12.
a is formed. A standpipe 20 is connected to the lower end of the drain port 12a.

The cross-sectional shape of the inflow tube 13 is, for example, square, and the lower portion 13a of the inflow tube 13 accommodated in the large diameter portion 11 is twisted sequentially in the circumferential direction along the vertical direction. Therefore, the large diameter portion 11 is sequentially twisted in the circumferential direction from the portion that fits into the through hole 11c formed in the upper surface portion 11a toward the lower side.

The inflow cylinder 13 has a rectangular cross-sectional shape with a substantially constant cross-sectional area over the entire length in the vertical direction, and the upper part 13b of the inflow cylinder 13 extending from the through hole 11c of the large diameter portion 11 is It is not twisted in the circumferential direction.

As a result, as shown in FIG. 3, each of the four side surfaces He of the inflow tube 13 is curved in a spiral shape, and there is a space between the adjacent side surfaces 13c and 13c in the vertical direction of the inflow tube 13. Corner portions 13d are each formed spirally curved around the axis.

The twist angle between the upper end and the lower end of the lower part 13a of the inflow tube 13 which is accommodated in the large diameter portion 11 and twisted in the vertical and circumferential direction is not limited to, for example, 30
It can be set to about 90 degrees, and in this example,
As shown in FIG. 2, the lower end of the lower part 13a of the inflow tube 13 is twisted over about 45 degrees from the upper end fitted into the through hole 11c. In addition, the lower end of the inflow tube 13 is located below the position where the branch pipe connection section 14 is disposed, and the lower end of the inflow tube 13 is located below the position of the branch pipe connection section 14 so that the drainage from the inflow tube 13 flows down toward the large diameter section 11 and the inner circumferential surface of the water collecting section 12. It is preferable to set it at a position above the upper end of the shaped water collection part 12.

Inflow tube 1 extending upward from upper surface portion 11a of large diameter portion 11
A standpipe 20 is connected to the upper part 13b of 3. The upper end surface of the upper part 13b of the inflow tube 13 is, for example, circular, and the cross-sectional shape of the upper part 13b is gradually deformed from a circular shape to a square shape as it approaches the lower side.

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

As shown in FIGS. 3 and 4, when the waste water flowing into the inflow pipe 13 from the standpipe 20 flows down each spirally curved side surface 13c in the lower part 13a of the inflow pipe 13, the waste water flows down each side surface 13d. While flowing down, due to centrifugal force,
They are collected in a portion 13d of each corner. This corner part 13
Since d has a spiral shape as described above, the drainage water flows down while swirling along the corner portion 13d. Then, the waste water flowing down from the inflow tube 13 maintains its swirling state, flows out from the drain port 12a into the large diameter section 11 and the water collection section 12, and flows onto the inner peripheral surfaces of the large diameter section 11 and the water collection section 12. flowing down.

Therefore, the flow resistance of the wastewater flowing down the inner circumferential surfaces of the inflow pipe 13 and the water collection part 12 increases, the vertical flow velocity of the wastewater decreases, and the wastewater flows down the inner peripheral surfaces of the inflow pipe 13 and the water collection part 12. Therefore, an air axis is formed at the axial center of the collecting pipe joint 10, and this air axis communicates with each of the upper and lower standpipes 20.

Further, if each side surface 13c of the inflow tube 13 has a constant thickness and the cross-sectional shape of the outer surface is a polygonal shape twisted in the vertical direction sequentially in the circumferential direction like the inner surface, it is possible to connect branch pipes to branch pipes. The waste water flowing into the large diameter part 11 through the part 4 collides with the outer circumferential surface of this inflow cylinder 13, and the waste water is the same as the waste water flowing in from the standpipe 20 flowing inside the lower part 13a of the inflow cylinder 13. The swirling flow flows in the large diameter section 11 and the water collecting section 12 in the same direction, and the swirling flow can also be applied to the drainage from the branch pipe, so that both flow inside the large diameter section 11 and the water collecting section 12. Water is collected as a swirling flow.

In this case, as shown by the two-dot chain line in FIG.
At the corner opposite to each branch pipe connection part 14, each branch pipe connection part 1 is attached.
If guide vanes 15 and 15 are respectively provided to guide the wastewater flowing in from the inflow pipe 13 so that it flows along the outer surface of the inflow pipe 13, the wastewater flowing in from each branch pipe connection part 14 can be guided to flow along the outer surface of the inflow pipe 13. It is possible to reliably create a similar swirling flow.

Such a collecting pipe joint 10 is made of, for example, polyvinyl chloride (PVC), fiber reinforced plastic (FRP), cast iron, etc. The tube 20 is connected by flange connection or rubber seal connection. Further, each branch pipe connecting portion 14 and the branch pipe are also connected by flange connection or rubber seal connection.

Note that the cross-sectional shape of the inflow tube 13 is triangular or
It can also be formed into a decagon or the like.

A collecting pipe joint according to a second embodiment of the present invention is shown in FIG.
) to (F). The collector pipe joint of this embodiment has the first
Similar to the collector pipe joint of the embodiment, the inflow pipe 33 has a square cross section, and has a lower part 33a accommodated in the large diameter part 31.
is gradually twisted in the circumferential direction as it moves toward the bottom. In this embodiment, the lower end of the lower part 33a of the inflow cylinder 33 is twisted about 90 degrees with respect to the upper end. In addition, in this embodiment, the water collection part 32 connected to the lower side of the large diameter part 31 has a hexagonal cross section, and the diameter is gradually reduced toward the lower side. The width dimension of each side surface 32b gradually becomes smaller toward the lower side. Moreover, the water collection section 3
2 is gradually twisted in the circumferential direction toward the lower side, and each side surface 32b is curved in a spiral shape. Each side 32b
The corner portion 32c between the water collecting portions 32 has a twisted straight line shape with respect to the axis of the water collection portion 32. A blade body 32d is attached to every other corner part 32c along each corner part 32c. Each blade body 32d protrudes into the water collecting part 32 at the upper end of the water collecting part 32, and its protruding tip is flush with the inner surface of the drain port 32a at the lower end of the water collecting part 32. As shown, the amount of protrusion gradually decreases toward the bottom, forming a straight line. Therefore, each blade body 32d does not entirely protrude inward from the peripheral edge of the drain port 32a.

The twist angle between the upper end and the lower end of the water collecting section 32 that is twisted in the vertical direction is not limited, but can be set to about 30 to 120 degrees, for example. , as shown in FIG. 5(D), is twisted by about 60 degrees.

In the collecting pipe joint of the present embodiment, as well as the collecting pipe joint of the first embodiment, the waste water flowing into the inflow tube 33 flows into the water collection part 32 in a spirally turned state. Water collection part 32
The swirling wastewater that has flowed into the water collection section 32 is guided to each side surface 32b of the water collecting section 32, which has a hexagonal cross section and is gradually twisted toward the bottom, and is then swirled in layers. The water is discharged from the drain port 32a with an air core formed around the axial center inside the water collecting portion 32. At this time, each side 32b
Since the wastewater guided to is guided by the blade body 32d disposed at the predetermined corner part 32c, a stronger turning force is applied.

Each blade body 32d restricts to some extent the drainage that tends to spread outward due to centrifugal force, and ensures that the drainage is turned without being disturbed.

Further, when the waste water flowing from each branch pipe connection part 34 to which the branch pipes are connected flows into the water collection part 32, the waste water flows into the inflow pipe 3.
Along with the drainage water that has passed through 3 and become a swirling flow, the water collection part 32
A swirling force is applied by each side surface 32b and each blade body 33d, the water is collected, and is discharged from the drain port 32a in a swirling state with an air core formed at the axial center.

In addition, in the collector pipe joint of this embodiment, the cross-sectional shape of the water collection part 33 is polygonal, and the configuration is such that it is gradually twisted in the vertical direction and in the circumferential direction, and the blade body 32d is arranged inside. However, a configuration having only one of them, for example,
The cross-sectional shape of the water collecting part is a polygonal shape that is gradually twisted in the vertical direction, and no blade is disposed, or the cross-sectional shape of the water collecting part is a circular shape or a polygonal shape that is not twisted in the vertical direction. A configuration may be adopted in which a blade body twisted about the axis of the water collecting portion is disposed on the inner surface.

FIGS. 6(A) to 6(F) show a third embodiment of the collecting pipe joint of the present invention. In this embodiment, the large diameter portion 41 and the water collecting portion 42 are similar to those in the second embodiment. , and has a branch pipe connection part 44. Therefore, the water collection part 42 has a polygonal shape that is sequentially twisted in the circumferential direction along the vertical direction, and the blade body 42d is located at a predetermined corner part 42c. It is arranged. In the present embodiment, the inflow tube 43 has a polygonal shape that is sequentially twisted in the circumferential direction along the vertical direction, similar to the inflow tubes 13 and 33 of the first and second embodiments. The diameter of the lower part 43a of the cylinder 43 gradually increases toward the lower end.

The lower end of the inflow tube 43 is preferably expanded in diameter to 1.1 to 2.0 times the diameter of the inner portion (7) of the inflow tube 43 in the side length.

In this way, by enlarging the diameter of the lower end of the inflow cylinder 43, the waste water that has passed through the inflow cylinder 43 and has become a swirling flow flows out from the lower end of the inflow cylinder 43 in a manner that spreads outward. The drainage water that has become a swirling flow is diffused to the inner surface of the water collecting section 42, and a swirling force is applied more reliably by each side surface of the water collecting section 42 and the blade body 43d.

In the case of this embodiment as well, the water collection portion 42 has either a polygonal cross-section twisted in an eastward direction along the vertical direction, or a configuration in which only the blade body is disposed on the inner surface. There may be.

In this third embodiment, as shown in FIG.
The blade body 43d may be arranged along a part of the corner between each side surface in the enlarged diameter portion.

With such a configuration, each blade body 43d applies a strong swirling force to the waste water flowing out from the inflow pipe 43, and the water is diffused toward the inner circumferential surface of the water collecting portion 42. . Then, in the water flowing down along the inner surface of the water collection part 42,
Furthermore, turning force is applied.

The amount of protrusion of each blade body 43d is set so that it does not protrude inwardly beyond the inner diameter of the standpipe connected to the inflow tube 43, and the amount of protrusion gradually increases as it moves downward. The tip of the protruding side is approximately vertical.

In each of the above embodiments, the blades provided on the inner surface of the inflow cylinder or the inner surface of the water collection part are located inwardly than the inner diameter of the standpipe connected to the inflow pipe or the inner diameter of the standpipe connected to the water collection part. Since it does not protrude, there is little risk of clogging caused by waste in the drainage water, and even if clogging occurs, it can be easily cleared.

(Effects of the Invention) As described above, in the collecting pipe joint of the present invention, the waste water that has flowed into the inflow cylinder from the standpipe becomes a swirling flow and flows down into the large diameter part and the water collecting part, so that the waste water flows An air core is formed at the center of the shaft, and the air flows out while maintaining its inertia. Therefore, the flow velocity of the drainage water in the vertical direction is reduced, and a core of air communicating with each other can be formed 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, air is constantly communicating with the axial center of the drain pipe, so the air pressure inside the drain pipe is reduced. Fluctuations can be reduced and trap water rupture can be reliably prevented.

In addition, the collecting pipe joint of the present invention can achieve the above effects simply by forming the inflow pipe into a polygonal cross section and adding twist. There is no risk of clogging the drain due to dust, fiber debris, etc. getting caught on protrusions such as blades, and there is no problem with noise. Further, after long-term use, slime does not accumulate between the blade bodies and reduce the swirling flow. Furthermore, since the shape of the inlet tube can be simplified, manufacturing costs can be reduced.

4. Figure 1 is a perspective view showing the first embodiment of the collector pipe joint of the present invention, Figure 2 is a sectional view taken along line nm in Figure 1, and Figure 3 is the same as Figure 1. 4 is a schematic diagram for explaining its operation. FIG. 5(A) is a sectional view showing a second embodiment of the collector pipe joint of the present invention. B), (C)
, (D), and (E) are respectively the BB line of FIG. 5 (A),
5(F) is a perspective view for explaining the operation, and FIG. 6(A) is a third cross-sectional view of the collector pipe joint of the present invention. Cross-sectional views showing examples, FIGS. 6(B), (C), (D), (E), and FIG. 6(A), respectively.
6(F) is a perspective view for explaining its operation, and FIG. 7 is a cross-sectional view taken along lines B-B, C-C, D-D, and E-E, and FIG. 7 is a collective pipe joint of the present invention. FIG. 8 is a sectional view of a conventional collector pipe joint.

10.30.40...collector pipe joint, 11.31.41
...Large diameter part, 12.32.42...Water collection part, 13.
33.43... Inflow pipe, 14.34.44... Branch pipe connection part, 20... Standpipe, 32d, 42d... Vane body.

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. a large diameter portion connected to the standpipe and flowing through the standpipe, a lower portion of which is housed within the large diameter portion so that wastewater flowing through the standpipe flows into the large diameter portion; A polygonal inflow pipe whose lower cross section is sequentially twisted in the circumferential direction along the vertical direction and a water collection pipe connected to the lower end of the large diameter part and whose lower end has a reduced diameter. A collector pipe joint having a part and a part.