JPS6335099Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a drainage collection pipe, and more specifically, a drainage collection pipe that has an upper standpipe connection port on the top and a side branch pipe connection port on the side. It is related to.

In this type of wastewater collecting pipe, the standpipe wastewater flowing down from the upper standpipe connection port flows down along the inner wall of the standpipe while swirling due to the action of gravity, and further fills the internal space of the wastewater collecting pipe. When passing through, it flows down in a cylindrical shape approximately equal to the inner diameter of the standpipe connection port. Therefore, if only standpipe drainage is considered, an air column communicating with the atmosphere will be formed inside the standpipe drainage, for example on the roof of a building, and the pressure inside the drainage collection pipe will be maintained approximately equal to atmospheric pressure. dripping

However, if there is horizontal branch pipe drainage flowing in from the side branch pipe connection port within the drainage manifold, the above-mentioned air column is disturbed and blocked, and the pressure inside the drainage manifold changes. This pressure change breaks the water seal of the trap connected to the side branch pipe connection port, causing water and bad odor in the drain pipe to flow into the room, reducing the comfort of the room.

[Conventional technology]

In order to prevent the above phenomenon, a two-pipe system is adopted. In this system, in addition to the original drain pipe, a vertical ventilation pipe is provided to allow air to pass through the drain pipe.

[Problem that the invention attempts to solve]

However, since this method requires a complicated structure with double piping, it is not welcomed in modern buildings in Japan, especially in apartment complexes, in terms of cost and installation space for piping.

[Means for solving problems]

This invention eliminates the complicated, expensive, and large installation space required two-pipe system, and provides a drainage collection pipe that does not disrupt and block the air column due to side branch pipe drainage. is a drainage collecting pipe constructed by removably joining a hollow collecting pipe main body and an upper cover, and the collecting pipe main body has an opening open upward and one or more horizontal holes provided on the side. A branch pipe connection port is provided, and the upper cover is integrally formed with a base plate portion having an upper standpipe connection port on the upper part, and a lower surface of the base plate portion, the diameter of which is reduced downward, and a portion near the lower surface of the base plate. and a water guiding plate portion with an air circulation gap provided therein, and the inner diameter at the lower end of the water guiding plate portion is formed to be approximately equal to the inner diameter of the upper standpipe connection port, and the collecting pipe main body and the upper cover are joined to each other. Sometimes, the lower edge of the water guiding plate is a drainage collecting pipe arranged below a horizontal plane passing through the lowest part of the horizontal branch pipe connection port.

[Effect]

The present invention is configured as described above, and the water guide plate prevents the drainage flowing in from the side branch pipe connection port from colliding with the standpipe drainage. The flow flows along the inner and outer surfaces of the section in a laminar manner, and then merges at the lower edge.Also, during periodic cleaning to prevent solids from clogging, which is likely to occur at the collecting section of the drain, the water guide plate section should be cleaned along with the upper cover. It can be extracted and is extremely practical.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to two embodiments.

In FIGS. 1A and 1B, reference numeral 1 denotes a drainage collecting pipe interposed between the upper and lower standpipes, and includes a collecting pipe main body 2 and an upper cover 11 made of synthetic resin. The collecting pipe main body 2, which has a funnel-shaped vertical cross section, has a large diameter opening 3 in the upper part, and one or more lateral branch pipe connection ports to be connected to each lateral branch pipe (not shown) in the lower side thereof. 4 is formed,
Further, a lower standpipe connection port 5 to be connected to a lower standpipe (not shown) is formed at the lower part of the collecting pipe main body 2 whose diameter is tapered downward from the connection port 4.

The upper lid 11 includes a disk-shaped base plate 13 having an upper standpipe connection port 12 to be connected to an upper standpipe (not shown) at the top, and the periphery of the base plate 13 and the opening 3
They are removably joined with screws 14 by aligning the peripheral edges of the two. In this embodiment, a cylindrical water guiding plate portion 15 whose diameter is tapered downward is formed integrally with the lower surface of the substrate portion 13, and near the lower surface of the substrate portion A suitable air flow gap or window 16 is formed so that the air within the collecting pipe main body 2 sealed by the upper cover 11 communicates with the standpipe connection port 12. Further, the inner diameter of the lower end of the water guide plate portion 15 is formed to be approximately equal to the inner diameter of the upper standpipe connection port 12, and when in use, that is, when the collecting pipe main body 2 and the upper cover 11 are joined with the screws 14, the water guide plate portion 15
The lower end of the lateral branch pipe connection port 4 is located below the horizontal plane that includes the bottom of the opposite side branch pipe connection port 4.

In addition, to connect the stand pipe and the upper and lower stand pipe connection ports 12 and 5, and the side branch pipe and the side branch pipe connection port 4, insert each pipe into the corresponding connection port, and use a packing and a bag nut-shaped packing cap. (both not shown) are held in a honey-like state.

Next, the operation of the present invention will be explained under an adverse condition of the drainage collecting pipe, that is, when drainage from the stand pipe and drainage from the side branch pipe are performed at the same time.

The horizontal branch pipe drainage flowing into the drainage collecting pipe 1 from the horizontal branch pipe connection port 4 collides with the outer surface of the water guiding plate portion 15 and flows down, but the lower edge of the water guiding plate portion is located at the top of the horizontal branch pipe connecting port 4. Since it extends below the horizontal plane passing through the bottom, the inside of the water guide plate portion 15 does not collide with the falling standpipe drainage. Therefore, the air column spanning the upper and lower pipes is disturbed and not blocked. Furthermore, conventionally, the sealed air within the water guide plate portion 15 of the drainage collection pipe is prone to pressure fluctuations due to drainage from the stand pipe and side branch pipes.
Since the window portion 16 is formed in the water guiding plate portion 15, the air within the water guiding plate portion communicates with the air column, and the internal pressure becomes equal to the outside pressure, and due to both of the above, pressure fluctuations do not occur in the drainage collecting pipe. Therefore, the water seal of the trap connected to the side branch pipe connection port 4 will not be broken.

As mentioned at the outset, the standpipe wastewater flowing down inside the wastewater collection pipe flows down in a cylindrical shape approximately equal to the inner diameter of the standpipe connection port. According to the present invention, since the inner diameter of the lower end of the water guide plate portion 15 is formed to be approximately equal to the inner diameter of the standpipe connection port 12, the standpipe drainage is rectified by the lower inner surface of the water guide plate portion 15, and is almost layered along the inner surface. The water flows down in a flowing manner and merges at the lower end of the water guide plate portion with the horizontal branch pipe drainage, which is also made into a substantially laminar flow by the outer surface of the water guide plate portion 15 extending downward. Therefore, the impact between the stand pipe drainage and the side branch pipe drainage is extremely small, making it easy to maintain the air column. In addition, if the drainage collecting pipe is clogged with domestic wastewater, the water guide plate portion 15 together with the upper cover 11 is removed from the collecting pipe main body 2 of the drainage collecting pipe 1 and cleaned.

In another embodiment shown in FIGS. 2A and 2B,
Drain plate part 15 is installed only in the part facing the side branch pipe connection port.
The wall has a concave cross-section toward the side branch drainage, as shown. It is preferable that the effective area of the wall facing the side branch pipe drainage is slightly larger than the flow path cross-sectional area of the side branch pipe connection port. Although this embodiment is effective in cleaning the drainage collecting pipe and controlling pressure fluctuations, it is inferior to the first embodiment in the effect of not blocking the air column due to side branch pipe drainage and effectively merging both drainage pipes.

〔effect〕

Since the present invention is constructed in this way, the air column is not blocked by side branch pipe drainage, and the air inside the water guiding plate is constantly communicated with the air column, resulting in an extremely simple structure compared to the conventional two-pipe type. This can prevent the trap water seal from breaking. In addition, in order to prevent clogging of the drainage collecting pipe due to domestic wastewater, the main body of the collecting pipe and the upper cover are separated, and the water guide plate, which is prone to clogging, is formed integrally with the upper cover, making it easy to disassemble and clean the collecting pipe. resolved.

[Brief explanation of the drawing]

FIG. 1A is a vertical sectional view showing the first embodiment of the present invention, FIG. 1B is a horizontal sectional view taken along line A-A in FIG. 1A, and FIG. 2A is a vertical sectional view showing the second embodiment. FIG. 2B is a horizontal sectional view taken along line B-B in FIG. 2A. 1...Drainage collecting pipe, 2...Collecting pipe body, 3...
Opening, 4... Side branch pipe connection port, 11... Upper cover, 1
2... Upper standpipe connection port, 13... Board part, 15...
...Water guide plate section.

Claims (1)

[Scope of utility model registration request] A drainage collecting pipe is constructed by removably joining a hollow collecting pipe main body and an upper cover, and the collecting pipe main body has an opening open upward and one or more side branch pipes provided on the side. The upper lid is integrally formed with a base plate having an upper standpipe connection port on the upper part, and a lower surface of the base plate, the diameter of which is reduced downward, and air is provided near the lower surface of the base plate. and a water guiding plate portion provided with a flow gap, and the inner diameter at the lower end of the water guiding plate portion is formed approximately equal to the inner diameter of the upper standpipe connection port, and when the collecting pipe main body and the upper cover are joined, A drainage collecting pipe in which a lower edge of the water guide plate portion is disposed below a horizontal plane passing through the bottom of the horizontal branch pipe connection port.