JP3132966B2 - Water channel prevention structure around gutter pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water channel preventing structure around a gutter tube.

[0002]

2. Description of the Related Art In order to prevent flooding from a dike or breakage of a dike when the river is flooded, a gutter pipe for draining the increased water to another river or a wastewater treatment plant is provided. The gutter is buried within the embankment so as to cross the embankment of the river.

[0003] Since this gutter pipe is provided across the embankment, a drainage channel, ie, a water channel (water supply), which runs from the river side to the outside of the embankment on the shore side, is formed along the gutter pipe. May be done. Therefore, in order to prevent the formation of such water channels, an annular water impermeable wall is fitted around the gutter pipe, and the water impermeable wall is fixed to the outer peripheral surface of the gutter pipe by welding. ing.

[0004]

However, such a conventional impermeable wall has a large number of welds and requires welding to the outer peripheral surface of the gutter pipe without any positioning means. There is a problem of difficulty.

[0005] Therefore, an object of the present invention is to solve such a problem and to easily attach a water impermeable wall to a gutter pipe.

[0006]

According to the present invention, a gutter pipe buried in the ground is constituted by a plurality of pipes joined by a pipe joint. A socket is formed at the end of the pipe, and an insertion hole to be inserted into the reception port is formed at the end of the other pipe, and the inner peripheral surface of the opening end of the receiving port and the outer peripheral surface of the insertion port are formed. An annular sealing material is interposed therebetween, an annular water-impervious wall having an inner peripheral edge is fitted to the insertion opening, and the water-impervious wall is configured to be able to be fastened to an end face of the receiving port. When the water wall is fastened to the end face of the receptacle, the sealing material can be compressed by the inner peripheral edge.

[0007]

With this configuration, the impermeable wall can be attached to the gutter pipe only by being fastened to the end face of the receiving port, so that the attaching work is easy. In general, since the mouth of the pipe is thick, the strength is large, and even if the impermeable wall is fastened, the strength is not substantially affected. In addition, since the impermeable wall also functions as a means for compressing the sealing material, the number of components is correspondingly reduced.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 4, a gutter 13 crossing a bank 12 of a river 11 is buried inside the bank. Gutter pipe
A gate 14 is provided at an end of the river 13 on the river side.

The gutter pipe 13 has a configuration in which a plurality of cast iron pipes 15 are connected by a pipe joint 16. Figure 1 shows this pipe joint
16 shows the detailed structure. That is, a receiving port 20 is formed at an end of one tube 15, and an insertion port 21 inserted into the receiving port 20 is formed at an end of the other tube 15.

On the inner periphery of the opening end of the receiving port 20, there is formed a ring-shaped sealing material pressing surface 22 which is open outwardly.
An annular groove 19 is formed on the inner periphery of the receiving port on the far side. The annular groove 19 accommodates a lock ring 23 that is easy to tighten. The lock ring 23 is located between the socket insertion openings on the opening end side of the lock ring 23.
A backup ring 24 in contact with 23 and a rubber annular sealing material 25 in contact with the backup ring 24 are arranged. This sealing material 25 is
21 and the outer peripheral surface. A lock ring 23 is provided on the outer periphery of the distal end of the
An annular protruding portion 26 is formed which can be engaged with the projection.

At a plurality of circumferential positions on the end face of the receiving port 20, bolts 27 in the pipe axis direction are implanted. The water impermeable wall 30 and the water blocking body 31 are fastened to the end face of the receiving port 20 by the bolt 27 and the nut 28.

As shown in FIGS. 1 and 2, the impermeable wall 30 is formed of an annular metal plate fitted into the insertion opening 21, and its outer peripheral portion 33 is formed of the pipe 15. By being formed larger than the outer circumference, it is formed so as to protrude radially outward from the tube 15. Reference numeral 34 denotes a hole through which the bolt 27 passes.

As shown in FIG. 1 and FIG.
Reference numeral 32 denotes a rubber annular plate that is sandwiched between the impermeable wall 30 and the end face of the receiving port 20. 35 is bolt 27
It is a hole for passing through. Further, the inner diameter of the water blocking body 31 is formed larger than the outer diameter of the sealing material 25 disposed between the sealing material pressing surface 22 and the outer peripheral surface of the insertion opening 21.

Between the inner peripheral surface of the water stopping body 31 and the outer peripheral surface of the insertion opening 21, there is disposed a circumferentially-divided annular pressing ring 36 having a rectangular cross section. . The pressing ring 36 is in contact with the end surface of the sealing material 25.
A press ring is formed on the inner peripheral edge of the water blocking wall 30 on the side of the receiving port opening when the water blocking wall 30 is fastened to the end face of the receiving port 20.
A stepped portion 37 related to 36 is formed.

When the pipe joint 16 having such a structure is joined, the water impervious wall 30 and the pressing ring 36
Then, the water stopping body 31, the sealing material 25, and the backup ring 24 are fitted to the outside. A lock ring is provided in the annular groove 19 of the socket 20.
23 is accommodated, and a bolt 27 is implanted in the end face.

When the insertion port 21 is inserted into the receiving port 20 in this state, the annular projection 26 first tightens and pushes out the self-contained lock ring 23 to enter the receiving port deeper than that. As a result, the lock ring 23 sticks to the outer peripheral surface of the insertion opening 21. Next, by passing the bolt 27 through the water stopping body 31 and the water blocking wall 30, the water stopping body 31 and the water blocking wall 30 are brought close to the end face of the receiving port 20,
Tightening by the nut 28 is started. Then, impermeable wall 30
By being pressed by the pressing ring 36 related to the step 37 of
The backup ring 24 and the seal material 25 are pushed into the space between the receiving port openings, so that the backup ring 24 contacts the lock ring 23 and the seal material 25 contacts the press contact surface 22.

When the nut 28 is further tightened, the sealing material 25 is interposed via the impermeable wall 30 and the pressing ring 36.
Is compressed, and the sealing material 25 is pressed against the press contact surface 22 and the outer peripheral surface of the insertion port 21 to seal the space between the receiving port insertion ports. Also, by tightening with the nut 28 in this way,
The water blocking wall 30 is fixed to the end face of the receiving port 20 in a state where the water stopping body 31 is compressed. At this time, when the water blocking body 31 is compressed, the space between the water blocking wall 30 and the end face of the receiving port 20 is sealed.

Since the joining of the pipe joint 16 is completed as described above, the gutter pipe 13 is formed by embedding the thus joined plural pipes 15 in the embankment 12 as shown in FIG. With such a configuration, the water flow 38 along the gutter pipe 13 is blocked by the impermeable wall 30 as shown in FIG.
38 is prevented from falling outside the embankment 12. Further, since the space between the water impermeable wall 30 and the end face of the receiving port 20 is sealed by the water blocking body 31, it is possible to reliably prevent the flow of water through this portion.

The water impervious wall 30 may be attached to all the pipe joints 16 in the gutter pipe 13 or the water impervious wall 30
There may be a pipe fitting 16 to which no 30 is attached, and the number and installation location may be appropriately determined according to the laying state of the gutter pipe 13. When the water impervious wall 30 is not attached, the seal member 25 may be compressed by a normal pressing wheel used for a mechanical pipe joint. As described above, since the impermeable wall 30 also functions as a means for compressing the sealing material 25, the number of components can be reduced correspondingly. In general, the thickness of the receiving port 20 of the pipe 15 is large, so that the strength is large. Even if the impermeable wall 30 is fastened in this way, the strength is not substantially affected.

As shown in FIG. 1, the lock ring 23 is accommodated in the annular groove 19 of the socket 20 and an annular projection 26 is formed at the end of the insertion port 21 which is on the back side of the socket from the lock ring 23. The engagement between the lock ring 23 and the annular projection 26 can provide the pipe joint 16 with a detachment preventing function. Also, as shown in the drawing, if the portion of the receiving port 20 on the back side of the annular groove 19 is formed relatively long, the pipe joint 16 can be provided with a telescopic function.

[0021]

As described above, according to the present invention, it is possible to fit an annular water-impervious wall having an inner peripheral edge into an insertion port of a pipe joint and to fasten the water-impervious wall to an end face of a receiving port. And, when this impermeable wall is fastened to the end face of the receiving port, the sealing material is configured to be compressible by the inner peripheral edge portion. The fitting can be performed, so that the mounting operation can be facilitated, and at the same time, the pipe joint can be joined. In general, the port of the pipe has a large thickness, so that the strength is large, and there is no influence on the strength even if the impermeable wall is fastened, and the impermeable wall is also used as a means for compressing the sealing material. In order to function, the number of parts can be correspondingly reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view of a water channel prevention structure around a drain pipe according to an embodiment of the present invention.

FIG. 2 is an overall side view of the impermeable wall in FIG.

FIG. 3 is an overall side view of the water stopping body in FIG. 1;

FIG. 4 is a schematic overall view of a gutter tube to which the water channel prevention structure of FIG. 1 is applied.

[Explanation of symbols]

 12 Gutter pipe 15 Pipe 16 Fitting 20 Receptacle 21 Insertion port 25 Seal material 27 Bolt 30 Impermeable wall 36 Press ring

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-181810 (JP, A) JP-A-4-155006 (JP, A) Jiko 57-27977 (JP, Y2) (58) Field (Int.Cl. ⁷ , DB name) E02B 8/00 E03F 3/04 E02B 3/10 F16L 1/02 F16L 21/04

Claims (1)

(57) [Claims] A gutter pipe buried in the ground is constituted by a plurality of pipes joined by a pipe joint, and a receiving port is formed at an end of one pipe constituting the pipe joint, and the other end is formed. An insertion hole to be inserted into the receiving port is formed at an end of the pipe, an annular sealing material is arranged between an inner peripheral surface of an opening end of the receiving port and an outer peripheral surface of the insertion port, and an inner peripheral edge portion is formed. When the annular impermeable wall having an outer fitting is fitted to the insertion opening, the impermeable wall is configured to be fastened to an end face of the receiving port, and the impermeable wall is fastened to the end face of the receiving port. And a seal material is configured to be compressible by the inner peripheral edge portion.