JP2988647B2 - Rehabilitation basin and rehabilitation sewage pipeline - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

It relates BACKGROUND OF THE INVENTION This invention rehabilitation basins and rehabilitating sewer pipe, is disposed between the particular example existing upstream pipe and the existing downstream pipe, to rehabilitation Masuichi and rehabilitating sewer pipe.

[0002]

2. Description of the Related Art As shown in FIG. 9, a concrete tub 1 is generally provided near a boundary between private sewage and public sewage, and an upstream pipe 2 and a downstream pipe 3 are connected to the concrete tub 1. ing. When such a concrete basin 1 becomes obsolete, rainwater or the like that has penetrated into the ground will cause joints 4 and 5
For example, there is a possibility that the water may flow into the concrete basin 1 and exceed the treated water amount of the sewage main pipe 6.

Therefore, conventionally, the inflow of water has been prevented by repairing the joints 4 and 5 with mortar or replacing the aged concrete basin 1 with a new one.

[0004]

However, the method of repairing the joints with mortar has a problem that the water cannot be reliably stopped. The method of replacing the concrete pit with a new one has a high construction cost and a low workability. There is a problem that the method cannot be applied when the site cannot be excavated due to bad traffic conditions.

[0005] Therefore, a main object of the present invention is to provide a rehabilitating pit which can rehabilitate a concrete pit simply, reliably and inexpensively.

[0006]

Means for Solving the Problems A first invention is a rehabilitation pit for rehabilitating an aging concrete pit, the pit body having an inlet and an outlet corresponding to the upstream and downstream directions of the concrete pit. And a connecting joint connected to an outlet for connecting an existing downstream pipe connected to the concrete basin to the basin body.

[0007] A second invention relates to an aging concrete basin.
Rehabilitation sewage pipeline obtained by rehabilitating sewage pipelines containing
Te, upstream pipe which is connected to a concrete basins, and the inlet, a body having an outlet and cleaning inlet, an outlet and connection fittings for connection to the downstream side conduit which is connected to a concrete basins This is a rehabilitation sewage pipeline that has a basin that contains a sewage line, and connects and connects the inlet of the basin and the upstream pipeline.

[0008]

For example, when rehabilitating an old concrete pit, a short pipe is stored in the pit, the pit is inserted into the concrete pit, and the connection joint is connected to the existing downstream pipe.
Then, short pipes are exchanged using the inflow port of the rehabilitation basin, and the main body and the existing upstream pipe are connected (exchange connection) via the short pipe.

[0009]

According to the present invention, it is possible to rehabilitate a concrete pit simply and reliably without incising the site and at low cost. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rehabilitation box 10 of this embodiment shown in FIG. 1 includes a main body 12 made of a synthetic resin such as vinyl chloride. Body 12
A cleaning port 14 is formed in the upper portion of the main body 12, and an inlet 16 and an outlet 18 are formed on the upstream side (the right side in FIG. 1) and the downstream side (the left side in FIG. 1) of the main body 12, respectively. A seal packing 20 made of foam rubber or the like is mounted on the inner peripheral surface of the inflow port 16, and
A universal joint 22 is connected to 8. The universal joint 22
The outer surface includes a substantially spherical core 44, and the outer surface of the core 44 includes:
A receiving portion 26 having a substantially spherical inner surface is fitted. Reception part 2
A spigot 28 is formed integrally with the spigot 6, and a seal packing 30 is fixed to an outer peripheral surface of an end of the spigot 28.

Such a rehabilitation pit 10 is used, for example, when rehabilitating a concrete pit 32 as shown in FIG. The concrete box 32 includes a main body 34 and a main body 3
Openings 36 and 38 are formed in the peripheral side surface of the fourth. An upstream pipe 40 and a downstream pipe 42 are respectively connected to the openings 36 and 38 via a filler 44 such as mortar. An invert 46 is formed at the bottom of the main body 34.

When the concrete pit 32 is rehabilitated using the rehabilitation pit 10, a short pipe 48 is housed in the main body 12 of the rehabilitation pit 10 (FIG. 1). The short pipe 48 includes a substantially hollow cylindrical main body 50, and a seal packing 52 is fixed to an outer peripheral surface at one end of the main body 50, and this end is connected to the existing upstream pipe 4.
0 (FIG. 2). On the other hand, in the concrete box 32, after the existing upstream pipe 40 is stopped by a water stopping member (not shown), the invert 46 is crushed to secure a space for disposing the rehabilitating box 10 inside the concrete box 32. In addition, as shown in FIG.
The drainage pipe 60 in which 8 is formed is disposed so as to extend into the ground, and a stone 62 is buried around the lower end of the drainage pipe 60.

[0013] Then, as shown in FIG.
(FIG. 1) is inserted into the concrete box 32, the universal joint 22 (the outlet 28) is connected to the existing downstream pipe 42, and the short pipe 4
8 (spout 54) is connected to the existing upstream pipe 40. After that, the mortar 64 is filled around the rehabilitation tub 10, thereby fixing the rehabilitation tub 10. Then, a water stop member (not shown) mounted in the existing upstream pipe 40 is removed,
A rising pipe 66 is connected to the cleaning port 14 of the rehabilitation basin 10, and a lid 68 is attached to an upper end of the rising pipe 66. In addition, since it is necessary to insert the rehabilitation pit 10 into the concrete pit 32 (FIG. 2), the length of the rehabilitation pit 10 in the horizontal direction (length in the left-right direction in FIG. 1) is set smaller than the diameter of the concrete pit 32. You. For example, in the case of FIG.
The length when the free angle of zero is zero (in this case, the length in the left-right direction is the shortest) may be equal to or smaller than the diameter of the concrete box 32.

According to this embodiment, the aging concrete pit 32 can be rehabilitated without cutting the site.
Workability can be improved, and construction costs can be reduced. Also,
It can be easily manufactured by combining an existing measure (main body 12) and an existing joint (universal joint 22). In the above-described embodiment, the universal joint 22 is connected to the outlet 18 of the box body 12 so as to be able to correspond to the existing downstream pipe 42 that is inclined.
2 is installed almost horizontally, the universal joint 2
Instead of 2, for example, a straight tubular joint 70 as shown in FIG. 4 may be connected. A seal packing 72 is fixed to the outer peripheral surface at one end of the joint 70, and a rubber ring socket (or an adhesive socket) 74 connected to the outlet 18 is provided at the other end.
Are formed.

The rehabilitation pit 10 can also be applied to a case where the site is cut as shown in FIG. 5, for example. In this case, since the respective ends of the existing upstream pipe 40 and the existing downstream pipe 42 can protrude inside the cutout portion 76, the universal joint 22 and the short pipe 48 are bonded to each other in place of the spigot. Mouth (or rubber ring socket) 78 and 80 may be formed. Joining the receiving port 78 and the existing upstream pipe 40,
If the receiving port 80 and the existing downstream pipe 42 are joined, the pipe is not reduced in diameter, so that a decrease in water permeability can be prevented. When the site is cut, a pebble 82 is laid at the bottom of the cut portion 76, a sand layer 84 is formed on the pebble 82, and a sand layer 84 is formed.
After the stabilization of the rehabilitation pit 10, earth and sand (not shown) are buried in the cutout portion 76.

Further, in each of the above-described embodiments, the short pipe 48 is exchanged at the inflow port 16 and connected to the existing upstream pipe 40. For example, as shown in FIG. The exchange may be performed in the upstream pipe 40 and connected to the inflow port 16 of the rehabilitation tub 10. When the short pipes 48 are exchanged using the existing upstream pipes 40 in this manner, it is not necessary to store the short pipes 48 in the rehabilitation tub 10 in advance, so that the present invention is applicable even when there are two or more existing upstream pipes 40. it can. However, in this case, it is necessary to use the cell body 12 having a plurality of inlets 16 corresponding to the existing upstream pipe 40.

In each of the above-described embodiments, the rehabilitation tub 10 and the existing upstream pipe 40 are connected via the short pipe 48. However, when the site is cut down, for example, as shown in FIG. As mentioned above, the existing upstream pipe 40 is directly
May be connected to the inflow port 16. Further, the present invention provides a method for rehabilitating the concrete pit 32,
The present invention can also be applied to a case where a new cleaning port is provided in the middle of a sewer pipe. In this case, the existing upstream pipe 40 and the existing downstream pipe 4
Since 2 is at substantially the same level, for example, as shown in FIG. 8, a box 86 or the like in which the pipe bottom of the inflow port 16 and the pipe bottom of the outflow port 18 are at substantially the same level can be used. This square 86
In this embodiment, the inlet 16 and the outlet 18 of the main body 12 are formed as receiving ports, and the outlet 18 has a short pipe 8 as a connection joint.
8 is connected. Then, one end of the short pipe 88 is connected to the existing downstream pipe 42, and the inflow port 16 and the existing upstream pipe 40 are connected via the short pipe 90. The existing downstream pipe 42 and the existing upstream pipe 4 are provided on the outer peripheral surfaces at one end of the short pipes 88 and 90.
A stopper portion 92 for defining the insertion length to zero is formed, and a seal packing 52 is fixed to a tip side of the stopper portion 92.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is an illustrative view showing a concrete box to which the embodiment of FIG. 1 is applied;

FIG. 3 is an illustrative view showing a state where a concrete box is rehabilitated using the embodiment of FIG. 1;

FIG. 4 is an illustrative view showing another embodiment of the present invention;

FIG. 5 is an illustrative view showing another example of use of the embodiment of FIG. 1;

FIG. 6 is an illustrative view showing a state of exchanging short pipes in an existing upstream pipe.

FIG. 7 is an illustrative view showing another example of use of the embodiment of FIG. 1;

FIG. 8 is an illustrative view showing another embodiment of the present invention;

FIG. 9 is an illustrative view showing a conventional technique;

[Explanation of symbols]

 10, 86 ... rehabilitation basin 12 ... basin body 14 ... cleaning port 16 ... inflow port 18 ... outflow port 22 ... universal joint 32 ... concrete tub 40 ... existing upstream pipe 42 ... existing downstream pipe 48, 88, 90 ... short pipe

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 4-77686 (JP, U) JP-A 61-152886 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) E03F 3/00

Claims (3)

(57) [Claims] 1. A rehabilitation basin for rehabilitating an aged concrete basin, wherein the basin body has an inlet and an outlet corresponding to an upstream and a downstream direction of the concrete basin, and is connected to the concrete basin. A rehabilitating basin comprising a connection joint connected to the outlet for connecting an existing downstream pipe to the basin body. 2. The rehabilitating basin according to claim 1, wherein a horizontal length including the basin body and the connection joint is selected to be a length that can be accommodated in the concrete basin. 3. A sewer line containing an aged concrete basin.
A rehabilitating sewer pipe obtained by rehabilitating the connection, the upstream side conduit which is connected to said concrete basins, and the inlet, a body having an outlet and cleaning inlet, the outlet to the concrete basins A rehabilitation sewage pipe, comprising: a tub including a connection joint for connecting to a downstream pipe that has been provided, wherein the inflow port and the upstream pipe of the tub are exchanged and connected.