JPS6332178Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to water permeable pipes.

In recent years, permeable pipes have been used in which the peripheral wall of the pipe is provided with a large number of through-holes that open on the inside and outside of the pipe for the purpose of permeating and absorbing excess water in the soil and permeating and diffusing rainwater underground.

Here, the permeable pipe is buried in the soil in an cut-and-cut trench, covered with a permeable layer made of cobblestones and crushed stones. The permeable layer is intended to expand the area of water absorption from the soil to the permeable pipe, expand the permeable diffusion area from the permeable pipe to the soil, and prevent the intrusion of earth and sand into the permeable pipe.

However, over a long period of use, the above-mentioned conventional water permeable pipes become clogged with dirt in the gaps between the crushed stones that form the permeable layer, gradually decreasing their permeation water absorption and permeation diffusion performance. After a period of use, it is necessary to replace the installation.

The purpose of this invention is to provide a water permeable pipe that can maintain stable permeation water absorption performance and permeation diffusion performance over a long period of time.

In order to achieve the above object, the permeable pipe according to the present invention has a plurality of injection channels extending in the axial direction of the pipe and capable of injecting pressurized water, formed in the wall of the peripheral wall of the pipe, and a spout opening on the outer surface of the pipe. A hole is formed to communicate with each injection channel.

Hereinafter, embodiments of this invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, a water permeable pipe 10
is provided with a large number of through holes 11 that open to the inner and outer surfaces of the tube at multiple positions on the circumferential wall of the tube. This through hole 11
is the infiltration and diffusion of rainwater from inside the permeable pipe 10 into the soil,
Permeation and absorption of excess water from the soil into the water permeable pipe 10 is possible.

In addition, the permeable pipe 10 is provided with holes 12 extending from one pipe end to the other pipe end in the pipe axial direction at multiple positions in the pipe circumferential direction within the wall thereof, increasing the wall thickness per unit weight, We are trying to improve its flat strength.

Here, the water permeable pipe 10 has the large number of holes 12
An injection channel 12 into which pressurized water can be injected
It is set as A. Each water injection channel 12A has a water permeable pipe 10
A nozzle hole 13 is formed in communication with the outer surface of the tube.

The water permeable pipe 10 in which the through hole 11, the injection channel 12A, and the spout hole 13 are formed as described above has a third
As shown in the figure, the permeable layer 1 consists of cobblestones and crushed stones.
It is said that it can be buried in the ground in a state where it can be covered with 4. Here, one end of the permeable pipe 10 is connected to, for example, a rainwater basin 15, and the other end is connected to a sewer pipe via, for example, a final rainwater basin and a sewerage attachment pipe.

Note that, as shown in FIG. 1, the water permeable pipe 10 can be successively connected to other water permeable pipes 10 by using a ring-shaped rubber connection packing 16. That is, a pair of water permeable pipes 10 to be connected
are holes 12 that are open on their opposing end faces.
are connected to protrusions 17 formed protrudingly on both sides of the connection gasket 16, and can be connected to each other by integrally holding the connection gasket 16 from both sides. Note that the corresponding water injection channels 12A of both connected water permeable pipes 10 can communicate with each other via a through hole 18 formed in the connection packing 16.

Next, the operation of the above embodiment will be explained.

When rainwater is introduced into the permeable pipe 10 from the rainwater basin 15, the introduced rainwater permeates and diffuses into the soil through the through holes 11 and the permeable layer 14. In addition, if there is surplus moisture in the soil in which the permeable pipe 10 is buried, the surplus moisture will be transferred to the permeation layer 14 and the through hole 11.
The water permeates into the permeable pipe 10 and is removed.

As the permeable pipe 10 repeats the permeation-diffusion action and permeation water-absorption action, the accumulation of earth and sand gradually increases in the permeation layer 14, and the permeation-diffusion action and permeation water-absorption action continue to be repeated. For example, the permeation layer 14 may become clogged. Therefore, in the permeable pipe 10, pressurized water is injected into the injection channel 12A at regular intervals before the permeable layer 14 becomes clogged.
3 toward the permeable layer 14 to stir the accumulated sediment in the permeable layer 14, and introduce the flow of pressure water into the permeable pipe 10 from the through hole 11 to remove the sediment in the permeable layer 14. Earth and sand can be removed. Here, the earth and sand introduced into the permeable pipe 10 as described above is transported in the mud pool as pipe water. The injection of pressurized water into the water injection channel 12A is carried out, for example, by connecting the pressure water supply coupling 19 inserted into the rainwater basin 15 to one end of the water permeable pipe 10, as shown in FIG. be exposed.

Therefore, according to the above embodiment, the water permeable pipe 10
The injection channel 12A is
The permeable pipe 1
It becomes possible to remove the earth and sand accumulated in the permeable layer 14 without having to change the laying of the permeable layer 14, and it becomes possible to permanently ensure stable permeable diffusion performance and permeable water absorption performance without clogging of the permeable layer 14.

Although the above embodiment describes a case where a part of the hole 12 for the purpose of improving the strength of the permeable pipe 10 is used as the injection channel 12A, the injection channel according to this invention is completely different from the hole 12 in the above embodiment. It may be provided independently.

Further, the water permeable pipe according to this invention may be made of any material such as synthetic resin or concrete.

As described above, the permeable pipe according to this invention has a large number of through holes opening on the inner and outer surfaces of the pipe in the pipe peripheral wall, and is a permeable pipe that can be buried in the soil while being covered with a permeable layer. A plurality of water injection channels extending in the axial direction and into which pressurized water can be injected are formed in the wall of the tube peripheral wall, and a spout hole that opens on the outer surface of the pipe is formed in communication with each water injection channel. Therefore, it becomes possible to remove the sediment accumulated in the permeation layer with the pressurized water injected from the vent, making it possible to maintain stable permeation diffusion performance and permeation water absorption performance over the long term. .

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the permeable pipe according to this invention, Fig. 2 is a sectional view taken along the - line in Fig. 1, and Fig. 3 shows the usage state of the permeable pipe according to the same embodiment. FIG. 10... Water permeable pipe, 11... Through hole, 12A...
Injection channel, 13...Blowout hole, 14...Permeation layer.

Claims (1)

[Scope of utility model registration request] A permeable pipe that has a large number of through holes that open on the inner and outer surfaces of the pipe, and that can be buried in the soil while being covered with a permeable layer, extends in the axial direction of the pipe, and allows pressure water to be injected. A water permeable pipe characterized in that a plurality of water injection channels are formed within a wall of a peripheral wall of the pipe, and a spout hole that opens on the outer surface of the pipe is formed in communication with each water injection channel.