JPH0237908Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a small diameter cell for a drain pipe.

In general, in order to inspect and repair drainage pipes when they become clogged, small-diameter cleaning ports are always provided at bends and branch points of the pipes. The cleaning opening is extended to the floor or provided with a cleaning opening so that cleaning tools (such as bamboo sticks) can be easily operated during cleaning.

The present invention relates to an improvement of such a small diameter cell.

[Conventional technology and its problems]

By the way, in general, sewage pipe installation work in residential areas is summarized as shown in Figure 3.The installation work is performed on a sewage main pipe 1 buried at a depth H of about 3 to 5 m below the road surface. The ends of the tubes 2 are connected at an angle of 60 degrees in plan view, and the slope of the attached tube 2 is 10 degrees or more. Anticipating that houses will be lined up in the residential area, an attachment pipe 2 is connected to the main pipe 1 in advance, and the opening of the attachment pipe 2 is set at a depth h = 1.8 m from the road surface. , place a blind cover there and backfill. When a new house is built, the road from the inside of the building to the vicinity of the blind cover 4 of the attached pipe 2 is re-excavated, the blind cover 4 is removed, and the drainage pipe from inside the building is connected to the attached pipe 2.
Therefore, there is no need to excavate the entire road.

In other words, in such sewer pipe installation work,
When a new house is built or an existing house is converted into a flush toilet, the excavation is done again to a depth of 1.8 m below the road surface.

Therefore, in the past, as shown in Figure 3, a residential drainage horizontal main pipe 3 was buried through a 45° elbow 10' at the open end of the attachment pipe 2, and the opening was placed inside the residential property, at the edge of a road, or on a public road. A blind cover 4 is provided there, and a cleaning opening 5 is provided at the base of the horizontal main pipe 3, and this is placed in the L-shaped side ditch 7 near the road. Construction work is underway to open it. In addition, in the same figure, 8 is the first 45°Y three-joint, 9 is the inclined pipe, and 1
0 indicates a 45' elbow, 11 indicates a cleaning lid, and 22 indicates a cleaning rod.

However, in the case of such a structure, even if the cleaning port 5 is provided at the base of the residential drainage horizontal main pipe 3, the horizontal main pipe 3 is located at a depth of h = 1.8 m from the road surface.
Since the cleaning port 5 is inclined with respect to the horizontal main pipe 3,
It is not possible to visually check or inspect the inside of the horizontal main pipe 3 through the cleaning opening 5.

[Means for solving problems]

The present invention was developed in order to eliminate such inconveniences, and it is an object of the present invention to provide a small-diameter box for drain pipes that not only eliminates these inconveniences but also facilitates the installation of cleaning ports. Hereinafter, the structure of the present invention will be explained in detail with reference to embodiments shown in the accompanying drawings.

Fig. 1 is a schematic diagram of an embodiment of the present invention, and Fig. 2 is a detailed diagram of the main part of Fig. 1.
A cleaning port 5 is attached to the horizontal main drainage pipe 3 in the residential area, similar to the structure explained in the third diagram, and inside the residential area or at the edge of the road, near the boundary between a public road and private land, or near the boundary between a roadway and a sidewalk. The opening is positioned and the blind cover 4 is fitted thereon, and the cleaning port 5 is opened within the cleaning port box 12. Please note that 1
2 shows a case in which it is provided inside a U-shaped side ditch 7' near a road.

Here, the cleaning port 5 is configured in a right triangle shape by a first 45° Y-shaped joint 8, a cleaning port pipe 14, a vertical pipe 15 consisting of a straight pipe, and a 90° Y-shaped joint 16. By removing the lid 21 of the cell 12 and the cleaning opening 11, a bamboo stick can be inserted, and by removing the cleaning opening 11, the inside of the horizontal main drainage pipe 3 in the residential area can be inspected through the vertical pipe 15 provided in a direction that allows direct viewing. That's what I do.

The diameter of the cleaning port pipe 14 is, in principle, the same as that of the horizontal main drainage pipe 3 in the residential property, but since the pipe diameter of the horizontal main pipe 3 is 150 mmφ or more, The diameter of the mouth pipe 14 is 100mmφ,
Either 150 mmφ may be used, and the diameter of the inclined pipe portion may be either 100 mmφ or 150 mmφ.

The above explanation is an outline of the cleaning port 5 of this embodiment. In order to perform assembly work at low cost by adhesive bonding, the following steps are taken.

In other words, for the residential drainage horizontal main pipe 3, the first
The 45° Y-joint 8 and the 90° Y-joint 16 are joined by an adhesive joint 17. Next, these joints 8,
If the inclined pipe 9 and the vertical pipe 15 are joined to the inclined pipe 9 and the vertical pipe 15 by adhesive bonding, even if you try to join the second 45° Y-shaped joint 13 to the respective openings of the inclined pipe 9 and the vertical pipe 15, Both pipe diameters
Since the diameter is more than 100 mm, it cannot be bent and fitted, and adhesive bonding is not possible.

Therefore, as shown in Figure 2, the first 45° Y-shaped joint 8 and the 90° Y-shaped joint 8 are connected to the residential drainage horizontal main pipe 3.
The joint 16 is joined by an adhesive joint 17. Next, one end of the vertical pipe 15 is adhesively joined 17 to a 90° Y-joint 16, and a second 45° Y-joint 13 is adhesively joined to the other end of the vertical pipe 15. On the other hand, the first 45° Y-shaped joint 8 is an expansion joint 1 using a rubber ring 18.
9 may be fixed in advance by adhesive bonding, or may be simply bonded and set as shown.
Next, after pre-immersing the inclined pipe 9 cut to a predetermined size into the expansion joint 19 to a length equal to or longer than the length l of the branch socket 20 of the second 45° Y-shaped joint 13, The inclined pipe 19 is pulled out from the expansion joint 9 in the direction a and adhesively joined to the socket 20.

Note that the expansion joint 19 is connected to the second 45° Y-shaped joint 1.
The third side may be adhesively bonded in advance, or the inclined pipe 9 may be divided and the expansion joint 19 may be interposed at the divided portion. Furthermore, an expansion joint 19 may be interposed in the vertical pipe 15. Further, the inclined pipe 9 may be a curved pipe with a large radius of curvature.

In summary, the present invention adopts the configuration described above, and thus has the following effects.

[Effect of the invention] Since the small-diameter cell is made of inclined pipes and straight pipes, there is no need to use large-diameter chamber cells.
It is compact, and even if a large number of small diameter squares are opened on the road surface, the road surface will not be filled with small diameter squares.

When cleaning the drain pipe, the inclined pipe is used as a guide for cleaning tools, and the inside of the drain pipe can be visually checked through the straight pipe, making cleaning and inspection convenient.

Since the inclined pipe and the straight pipe are bonded and bonded through appropriate joints, small-diameter cells can be formed using inexpensive pipes and joints.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of an embodiment of the present invention, FIG. 2 is a detailed sectional view of the main part of FIG. 1, and FIG. 3 is a sectional view of a conventional example. 2...Installation pipe, 3...Drainage horizontal main pipe in the residential area, 5...
...cleaning port, 8...first 45° Y-shaped joint, 9...inclined pipe, 11...cleaning lid, 15...vertical pipe.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a small-diameter drain pipe consisting of a drain pipe, an inclined pipe branching at an angle in the downstream direction of the drain pipe, and a cleaning cover provided at the opening of the inclined pipe. ,
In a direction where the inside of the drain pipe can be seen directly from the opening,
A small-diameter drain pipe characterized in that a straight pipe is provided to connect the inclined pipe and the drain pipe, and the drain pipe, the inclined pipe, and the straight pipe are assembled by adhesive bonding through joints. (2) A utility model in which a drain pipe, an inclined pipe, and a straight pipe form a right triangle, the inclined pipe and the straight pipe are joined using a Y-joint, and the inclined pipe or the straight pipe is expandable and retractable. A small-diameter drain pipe as described in paragraph (1) of the registered claim. (3) A small-diameter drain pipe as described in paragraph (2) of the scope of the utility model registration claim in which an expansion joint is interposed in an inclined pipe or a straight pipe. (4) A utility model registration application in which the drain pipe is a substantially horizontal attached pipe branching from the main sewer pipe, the opening of the attached pipe is located inside the residential property, and a blind cover is attached to the end. Small diameter for drain pipes listed in Scope (2).