JPS6251346B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for allowing rainwater falling on the roof of a house to permeate underground.

Recently, land development for housing has been actively carried out due to the concentration of entrances to cities, but as mountains, forests, fields, rice paddies, etc. are converted to residential land, the amount of rainwater runoff from the ground surface will increase. The amount of water is increasing rapidly, and there is insufficient cross-section of water in sewage pipes or downstream drainage channels, causing overflow from waterways and causing disasters during heavy rains.

In order to prevent this, it is best to allow as much rainwater as possible to permeate underground, but conventional construction work to allow rainwater to permeate underground includes water on the ground surface; Since the water is allowed to infiltrate under zero pressure, its ability to penetrate underground is weak, causing problems during heavy rains.Also, since surface water is allowed to flow in, it often causes problems such as clogging.

In view of the above-mentioned circumstances, the inventor of the present invention conducted research with the aim of developing a device that allows as much rainwater as possible to permeate underground, and as a result of his research, he found that most of the rainwater in residential areas is clear water that falls on the roofs. Focusing on certain things, he learned that it is sufficient to allow rainwater that falls on the roof to permeate into the underground, and that in order to do so, it is sufficient to allow the rainwater to permeate into the underground in a pressurized state, and has achieved the present invention. The configuration of the device is that it is installed at the bottom of the vertical rain gutter of the building, with or without an installation pipe.
It consists of an outer cylindrical pipe and an inner cylindrical pipe whose upper part is expanded into a socket shape to form an overflow part that also serves as a rainwater catchment, and which faces the lower part of the mounting pipe or vertical rain gutter, and whose lower part protrudes from the outer cylindrical pipe. At the same time, a pressurizing device is installed that closes the lower part of the outer cylinder pipe and has a drainage section horizontally at the bottom of the outer cylinder pipe, and at the same time, a permeation part is formed by burying chestnut stone etc. underground, and a drainage hole is installed in the permeation part. A permeation pipe provided with a large number of is buried horizontally, a vertical pipe is extended to the permeation pipe, and the upper end of the vertical pipe is joined to the lower end of the inner cylindrical pipe of the pressurizing device. It is.

Next, an embodiment of the present invention will be described with reference to a diagram of an example of an apparatus.

1 is a vertical rain gutter of a house, A is a pressurizing device attached to the lower part of the gutter 1 via an attachment pipe 2, and this pressurizing device A
The outer cylindrical pipe 3 attached to the mounting pipe 2 and the inner cylindrical pipe 5 whose upper part is expanded into a socket shape to form an overflow part 4 which also serves as a rainwater catchment are connected, and the overflow part 4 is attached to the lower part of the installation pipe 2. The lower part of the inner cylindrical pipe 5 is made to protrude and the lower part of the outer cylindrical pipe 3 is closed and integrally formed, and a drainage part 6 is provided laterally in the lower part of the outer cylindrical pipe 3.

B is a seepage part formed by excavating the ground to the required depth, width, and length and filling it with chestnut stone 7, and 8 is the seepage part B.
Infiltration pipe buried horizontally in approximately the center of the cross section, 9
are drainage holes provided in the permeation pipe 8, and when forming the permeation part B, first, as described above, excavate the ground to the required depth, width, and length, and drill holes approximately in the center of the excavated cross section. The infiltration pipe 8 is placed horizontally, and the area around it is filled with chestnut stone 7 to a depth of about 30 to 50 cm below the ground surface, and a filter material 10 of the same size is laid on the construction surface of the chestnut stone 7, Earth and sand 11 is backfilled onto the filter material 10 and its surface is finished with pressure.
Incidentally, a vertical pipe 12 without a drainage hole is extended from the permeation pipe 8, and its upper end is joined to the lower end of the inner cylindrical pipe 5.

Moreover, in the figure, C is a side gutter, and 13 is a pipe connecting the drainage part 6 and the side gutter C.

The device of the present invention is as explained in the above embodiment as an example, and rainwater falling on the roof of a house passes from the rain gutter to the vertical rain gutter 1 and the attached pipe 2, and the rainwater flows to the inner cylinder pipe 5 of the pressurizing device A. The water flows from the overflow part 4, which also serves as a receiver, through the inner cylinder pipe 5, from the vertical pipe 12 to the permeation pipe 8, and is discharged from the drainage hole 9, filling the voids in the chestnut stone 7, and gradually permeating into the soil. However, since the permeability coefficient of soil is generally small, the infiltration part B will be filled with rainwater in a short time, and the water level of the infiltration will rise and rise up the inner tube 5, reaching the upper end of the inner tube. When the water reaches the overflowing part 4, the water starts to overflow from there. In such a state, if the water level in the inner tube 5 rises, water pressure is automatically applied to the seepage part B, causing rainwater to seep into the soil. Therefore, the overflow part 4 which also serves as a rainwater catchment
By considering the location of the ground so that a water head suitable for the soil properties can be obtained, rainwater can effectively permeate underground. In addition, even during heavy rain, the pressure of rainwater infiltrates into the ground, which causes a large amount of infiltration into the ground.
The overflowing water flows from the drainage section 6 at the bottom of the outer tube 3 through the pipe 13 to the gutter C provided on the ground surface, so there is very little risk of a disaster occurring.

The present invention is as described above, and the rainwater that falls on the roof of a house is separated from the surface water and infiltrated underground under pressure to treat most of the rainwater in the residential area, and only the part that cannot permeate is removed from the overflowing area. Because it leads from to the gutter,
It is extremely useful for rain countermeasures in cities, and
This device has a simple structure and is easy to install.
It is extremely useful as a rainwater treatment device in residential areas.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of an example of the apparatus of the present invention, and FIG. 2 is an enlarged longitudinal sectional view of a permeation tube. A...Pressure device, B...Infiltration part, C...Gutter, 1...Vertical rain gutter, 2...Mounting pipe, 3...Outer cylindrical pipe, 4...Overflow part that also serves as rainwater catcher, 5...Inner cylindrical pipe, 6...Drainage part , 7...Kuriishi, 8
...Infiltration pipe, 9...Drainage hole.

Claims (1)

[Claims] 1 The lower part of the vertical rain gutter of a house is made up of an outer cylindrical pipe and an inner cylindrical pipe whose upper part is expanded into a socket shape to form an overflow part that also serves as a rainwater catchment, with or without an attachment pipe. The cylindrical pipe has its overflowing part facing the lower part of the attachment pipe or the vertical rain gutter, and the lower part of the inner cylindrical pipe protrudes from the outer cylindrical pipe to close the lower part of the outer cylindrical pipe, and the outer cylindrical pipe At the same time, a pressurizing device with a horizontal drainage section is installed at the bottom of the drain, while a permeation section is formed by burying chestnut stones underground, and a permeation pipe with many drainage holes is installed horizontally within the infiltration section. A device for infiltrating rainwater underground, characterized in that a vertical pipe is provided extending from the infiltration pipe, and the upper end of the vertical pipe is joined to the lower end of the inner cylindrical pipe of the pressurizing device.