JPS6323927Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention is used in the field of drainage construction to allow rainwater, etc. that collects in depressions in large parks and green areas to permeate into the ground.

Conventional technology In recent years, due to high-density development in urban areas, the infiltration of rainwater into the ground has decreased, causing ground subsidence due to a drop in the groundwater level, and the rapid increase in flood runoff, which has caused river overflow accidents and social problems. In addition, large parks and green areas are created as part of urban planning, but internal roads are sometimes paved with concrete for environmental improvement purposes, and in this case, the same phenomenon described above also occurs. Another problem was that rainwater infiltrated into the tree-planted area was insufficient due to large amounts of rainwater flowing down over a short period of time. For this reason, a structure was devised that would allow rainwater to seep into the ground instead of draining all at once.

Problems that the invention aims to solve: Conventional structures are unable to absorb water that accumulates due to large amounts of rain, and falling rainwater is contaminated with leaves and other debris. As a result, the water absorption mechanism becomes clogged with leaves, etc., making it impossible to absorb water, or the water absorption efficiency is significantly reduced, making it difficult to penetrate into the ground.

The purpose of this invention is to provide a device that allows large amounts of rainwater to penetrate into the ground, and does not reduce suction efficiency even if the rainwater is mixed with leaves, etc.

Means for Solving the Problem The present invention curves the upper opening edge 2 of the inner pipe 1 outward to form a curved part 3, and also forms small holes 5a and 5b into elongated holes on the entire surface of the peripheral wall 4 of the inner pipe 1. Through-holes 5 are vertically arranged in parallel and communicated through holes 5c, and a cap 7 is provided in the lower opening 6 of the inner pipe 1.
The inner pipe 1 is fitted into the outer pipe 8, and vertically elongated holes 10 are vertically arranged in parallel and bored in the peripheral wall 9 of the outer pipe 8, which is longer than the inner pipe 1 and has a slightly larger diameter, and the inner pipe 1 can be freely inserted into and removed from the outer pipe 8. It is made by fitting together.

Function Since the present invention is configured as described above, when water is injected from the upper opening of the inner pipe 1 with the inner pipe 1 fitted to the outer pipe 8, the water passes through the through hole 5 of the inner pipe 1. The water flows out from the peripheral wall 4 into the outer pipe 8, and the water that flows into the outer pipe 8 flows out through the elongated hole 10 of the outer pipe 8. The through hole 5 is made by connecting the small holes 5a and 5b through the elongated hole 5c, and is also bored vertically in parallel, so that leaves and debris mixed in the water will not flow into the through hole. Since there is little possibility that the pipe 5 will be blocked, there is also little possibility that the amount of water flowing from the inner pipe 1 to the outer pipe 8 will be reduced. Furthermore, a vertically elongated hole 10 bored in the outer pipe 8
Since they are arranged in parallel in the vertical direction, any dirt that could not be removed from the inner pipe 1 will be passed through the outer pipe 8 again, and there is less possibility of clogging the vertical hole 10, and the dirt will flow from the outer pipe 8 to the outside. There is also little risk that the water permeability will decrease. If leaves or debris are deposited on the bottom of the inner pipe 1, the inner pipe 1 can be removed from the outer pipe 8 and turned upside down to remove the debris.

Embodiment An example of the implementation of the present invention will be described with reference to the drawings. The upper opening edge 2 of the inner pipe 1 made of synthetic resin is curved outward to form a curved portion 3. A small hole 5 with a diameter of 20 mm is provided on the entire surface of the peripheral wall 4 of the inner pipe 1.
A, 5b are vertically bored at intervals of 160 mm, and these small holes 5a, 5b are communicated by a 3 mm wide elongated hole 5c. The through holes are vertically shifted and parallel to each other, and a synthetic resin cap 7 is fitted and fixed to the lower opening 6 of the inner pipe 1 using an adhesive. The outer pipe 8 is made of synthetic resin and is longer than the inner pipe 1 and has a slightly larger diameter, and the peripheral wall 9 has a vertical hole 10 with a length of 200 mm and a width of 20 mm in the vertical direction and vertically with respect to the adjacent vertical hole. Shift the position and approximately two-thirds from the top of the outer pipe 8.
Drill the hole to the desired position. When the inner pipe 1 is fitted into the outer pipe 8 from the upper opening, the upper opening edge 2 abuts the upper opening edge of the outer pipe 8, and the inner pipe 1 is kept suspended within the outer pipe 8. A overtube is formed.

An example of using this overtube is explained with reference to Fig. 4. A hole approximately 2 meters deep and 1.5 meters wide is dug in the location where the overtube is to be installed, and the outer pipe 8 is inserted from the bottom of the hole. Bury it in the soil to a depth of about 0.6 meters and stand it upright, and fill the inside of the hole with crushed stones to a depth of about 1 meter to form a gravel layer around the tube. Form a concrete layer c approximately 0.1 meter thick on top b. Furthermore, on this concrete layer C, a grating is fitted into the upper opening at a position covering the upper opening edge 2 of the inner pipe 1, with a height of approximately 0.55 meters and a width of approximately
A 0.6 meter cylindrical water collection hole will be installed, and soil will be filled in around this water collection hole to form an infiltration well.

According to the embodiment, when a large amount of rainwater accumulated in the depression flows into the water collection hole from the grating ni, the rain flows into the inner pipe 1 from the upper opening edge 2,
It flows out from the through hole 5 to the outer pipe 8, and further to the outer pipe 8.
From the vertical hole 10, it passes between the crushed stones A forming the gravel layer B and penetrates into the ground on the left, right, and below the gravel layer B. The upper end of the overtube 5 is made to protrude upward from the bottom of the water collection basin, and a curved part 3 is formed at the upper opening edge 2 of the inner pipe 1, so that leaves and mud mixed in rainwater can be removed. A part of the water is blocked by the curved part 3 and does not flow into the inner pipe 1 and sinks to the bottom of the water collection basin, and even if a part flows into the inner pipe 1, the through holes 5 are located alternately in the vertical direction. Since the holes are staggered, contaminants will not flow out from the inner pipe 1.
In addition, the through hole 5 is not clogged, mud accumulates in the cap 7 at the bottom, and only the rainwater that has passed through the through hole 5 flows into the outer pipe 8 and flows out from the vertical hole 10, and the water that falls to the bottom of the outer pipe 8. Penetrates directly into the ground.

Effects According to the present invention, rainwater flowing into the inner pipe passes through the perforation from the inner pipe and flows into the outer pipe.
Furthermore, it flows out from the vertical holes and permeates into the ground, but the contaminants accumulate in the inner pipe, and even if the contaminants try to flow in, the overholes communicate the upper and lower small holes with elongated holes, and are located alternately in the vertical direction. Since they were placed side by side with offsets,
There is no risk that all the perforations will become clogged at the same time, and there is little risk that rainwater will interfere with the outflow of rainwater to the outer pipe, and the penetration rate into the ground is extremely high.Also, since mud is stored in the cap, the inner pipe can be removed as necessary. You can easily remove the cap from the pipe, remove the cap, and remove mud, etc. inside the cap.

[Brief explanation of the drawing]

FIG. 1 is a front view of the present invention, FIG. 2 is a longitudinal sectional view of the inner pipe, FIG. 3 is a longitudinal sectional view of the outer pipe, and FIG. 4 is a sectional view of the product in use. Code: 1...Inner pipe, 2...Top opening edge, 3
...Curved portion, 4...Peripheral wall, 5...Through hole, 5a,
5b...small hole, 5c...elongated hole, 6...lower opening, 7...cap, 8...outer pipe, 9...peripheral wall, 10...vertical hole, a...crushed stone, b...gravel layer ,
C... Concrete layer, D... Grating, H... Water catchment.

Claims (1)

[Scope of utility model registration request] The upper opening edge 2 of the inner pipe 1 is curved outward to form a curved portion 3, and a through hole 5 in which the small holes 5a, 5b are communicated with each other by an elongated hole 5c is formed on the entire surface of the peripheral wall 4 of the inner pipe 1. The caps are bored in parallel in the vertical direction, and a cap 7 is fitted into the lower opening 6 of the inner pipe 1.
In the peripheral wall 9 of the outer pipe 8, which is longer than the inner pipe 1 and has a slightly larger diameter, vertically elongated holes 10 are vertically arranged and bored in parallel, and the inner pipe 1 is removably fitted into the outer pipe 8. A penetrating water tube featuring: