JPS63261025A - Penetration measure - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a seepage basin that collects rainwater flowing from roadside gutters, residential areas, etc. and allows it to permeate into the ground.

(2) Prior Art Conventionally, as shown in Fig. 9, this type of infiltration cell consists of a rectangular concrete frame (a), a bottom plate (b) at its lower end, and an edge mass (C) at the upper end of the frame (a). and an M(d) that is engaged therewith, and a through hole (e) is generally used in the center of the bottom plate (b).

(3) Problems to be Solved by the Invention According to this conventional infiltration basin, only the through hole (e) is formed in the center of the bottom plate (b), so dead leaves and dust contained in rainwater are removed. Floating objects such as these get caught in the hole (e) or in the ground around it and prevent the infiltration of rainwater, resulting in a disadvantage that the infiltration function is significantly reduced during long-term use.

It is an object of the present invention to eliminate such drawbacks and provide a permeation tank that is easy to manage.

(4) Means for Solving the Problems In order to achieve this object, the present invention provides a drain pipe that penetrates the bottom of the tank and projects upward, and drains mud into the tank outside of the drain pipe. A reservoir chamber is formed, and a filter is provided in the tank above the upper end of the drain pipe.

(5) Function The filter prevents floating objects such as dust and dead leaves contained in the rainwater flowing into the tank from passing through, and furthermore, the mud contained in the rainwater is settled and removed in the mud chamber below. The rainwater that overflows the upper end of the drain pipe and flows down the drain pipe contains almost no suspended matter or mud, and therefore, the floating matter and the like are absorbed into the ground around the drain pipe and the opening at its lower end. It does not get caught in the rainwater and impede the passage and penetration of rainwater, and its penetration function does not deteriorate even when used for a long time.

(6) Embodiment A first embodiment of the infiltration tank of the present invention will be described with reference to the third diagram of FIG. 1.

(1) indicates the tank of the infiltration basin, and the tank (1) is the upper side mass (1
a), a lower side block (ib), and a bottom plate (IC), and a frame body (2) is engaged with the lower part of the inner surface of the upper side block (la), and the bottom part (2a) is First drain pipe (3a) in the center
is provided so as to penetrate the bottom portion (2a) and protrude upward, and the inside of the bottomed frame (2) outside the first drain pipe (3a) is formed as a first mud chamber (4a). Furthermore, the bottomed frame body (2)
A relatively large plate-shaped primary filter (5a) made of mesh was secured to the upper end of the filter. Further, four second drain pipes (3b)...(3b) are provided on the bottom plate (lc) so as to protrude upwardly through the bottom plate (lc) and arranged as shown in FIG. Ta. And these second drain pipes (3b)...(3b
) is located inside the lower side mass (lb) outside of the second mud chamber (4b
) and a locking device (6) of the lower side mass (1b).
A plate-shaped secondary filter (5b) with a medium mesh is secured to the second drain pipe (3b) (3b).
A relatively small mesh cap-shaped tertiary filter (5C) was secured to the upper end of the filter. (7) is an external filter containing crushed stone (8) of the artificial infiltration layer outside the infiltration basin (1);
9) is an inlet for rainwater etc. that opens at the upper part of the upper side mass (1a).

(10) is an inflow pipe for rainwater etc. connected to the inflow port (9);
(1d) shows the lid of the infiltration tank (1), and (11) shows the backfill soil.

Next, the infiltration of rainwater through the infiltration basin of the above embodiment will be explained.

Rainwater from the inflow pipe (10) flows into the upper mass (la) from the inlet (9), but relatively large suspended matter such as large dust in the rain ice is filtered downward by the primary filter (5a). The influx of is obstructed. Then, Ut next fill ff-(5a
), the rainwater reaches the first mud chamber (4a) below, where pebbles, mud, etc. settle. Thereafter, the rainwater overflows the upper end of the first drain pipe (3a) and flows down the first drain pipe (3a) to reach the secondary filter (5b), where it collects medium-sized floating objects further below. The inflow to the area is obstructed. On the other hand, the rainwater that has passed through the secondary filter (5b) reaches the second mud chamber (4b), where fine pebbles, mud, etc. settle. After that, the rainwater in the FtS2 mud room (4b) overflows the upper end of the second drain pipe (3b)...(3b) and flows down inside these second drain pipes (3b)...(3b). However, the tertiary filter (5c) prevents fine suspended matter from flowing into the second drain pipe (3b)...(3b), and thus the second drain pipe (3b)...(3b)
There are almost no floating objects, mud, etc. in the rainwater flowing down, and the floating objects, etc. get caught in the second drain pipe (3b) and crushed stones (8), etc. around the opening at its lower end. The second drain pipe (3b)...
- Rainwater flowing down (3b) permeates through the crushed stone (8), passes through the external filter (7), and reaches the ground.

In this embodiment, since the positions of the first drain pipe (3a) and the second drain pipe (3b)...(3b) are shifted, the rainwater that has passed through the primary filter (5a) is at least drained from the first drain pipe (3b). It reaches the second drain pipe (3b) via either the first mud basin (4a) or the second mud basin (4b).

Fig. 4 and Fig. ff15 show the second embodiment, in which a discharge pipe (3C) is provided in the center of the bottom plate (IC) of the infiltration cell (1), penetrating it and protruding upward. In addition, the bottom plate (IC) at the outer position of the discharge pipe (3C)
A protrusion (12) is provided on the top, a mud chamber (4C) is formed in the infiltration basin (1) outside the protrusion (12), and a relatively large cap-shaped primary filter ( 5d) so that its lower end is close to the outer surface of the protrusion (12), and a medium-sized mesh hat-shaped secondary filter (5d).
e) so that its lower end is close to the inner surface of the protrusion (12), and a relatively small cap-shaped tertiary filter (5f) with a mesh so that its lower end is close to the outer surface of the discharge pipe (3C). They are installed on the bottom plate (IC) so as to be close to each other, and rainwater from the inflow pipe (10) flows through the inflow t.
” (9) into the mud chamber (4C), passes through the primary filter (5d), overflows the upper end of the protrusion (12), and flows into the protrusion (12). Large floating particles such as large dust are prevented from passing through by the primary filter (5d), and the floating particles and mud settle in the mud chamber (4C), and then the rainwater in the ridge (12) is Drain pipe (
3C) and flows down into the drainage pipe (3C), but the medium-sized floating objects in the rainwater are 2
The secondary filter (5e) prevents small floating objects from passing through the tertiary filter (5f), and thus there are almost no floating objects in the rainwater flowing down the drain pipe (3C). Therefore, similarly to the first embodiment, the permeation function does not deteriorate over time.

FIGS. 6 and 7 show a third embodiment, in which a first protruding wall (13a) protrudes from the rear inner surface of the tank (1) and a second protruding wall protrudes from the front inner surface of the tank (1). (1
3b) are provided at different positions, and these protruding walls (13a)
(13b) so that the flow path of rainwater in the tank (1) becomes meandering, and the left inner surface of the tank (1) and the first protruding wall (1
A relatively large mesh plate-shaped primary filter (5g) is placed between the tip of the left side of the first protruding wall (3a).
13a) and the second projecting wall (13b)
2 medium-sized mesh plates between the left side of the
A secondary filter (5h) is installed, and a relatively small plate-shaped tertiary filter (51) with a mesh is installed between the tip of the right side of the second protruding wall (13b) and the right inner surface of the tank (1). are connected to each other, and a bottom plate (l) at the end of the flow path is provided.
c), a discharge pipe (3d) is provided so as to pass through the bottom plate (lc) and protrude upward, and a smaller mesh cap-shaped quaternary filter (5j) is placed over the discharge pipe (3d);
A mud chamber (4d) is formed over the entire length of the flow path except for the discharge pipe (3d), and the inlet (
Rainwater flowing into the tank (1) from 9) flows along the channel, overflows the upper end of the drain pipe (3d), and flows down inside the drain pipe (3d), but the suspended matter in the rainwater is Large particles are blocked by the primary filter (5g), medium particles are blocked by the secondary filter (5h), small particles are blocked by the tertiary filter (51), and even smaller particles are blocked by the 4th filter (5j). , these floating substances settle on the lower surface of the mud chamber (4d) together with mud, etc., and thus there are almost no floating substances in the rainwater flowing down inside the drain pipe (3d). As in the example, the penetrating function does not deteriorate even after long-term use.

FIG. 8 shows a fourth embodiment, in which the primary filter (5a) in the first embodiment is formed into a cage shape, and a filter cage (14a) is provided in the middle of the upper mass (1a). At the same time, the secondary filter (5b) is also formed into a cage shape and placed at the upper end of the second outflow pipe (3b)...(3b)! ! The filter cage (14b) is configured to be engaged with the placed filter cage (14b), and its operation is substantially the same as that of the first embodiment.

Although not shown in any of the second to fifth embodiments, crushed stones (8) and an external filter (7) for accommodating them are provided outside the tank (1). M (1d) is secured to the upper end of the tank (1).

(7) Effects of the Invention As described above, according to the present invention, a drain pipe is provided at the bottom of the tank and extends through the bottom and projects upward, and a mud chamber is formed in the tank outside of the drain pipe.

Since a filter is installed above the upper end of the drain pipe in the tank, the filter prevents floating matter such as dust and dead leaves contained in the rainwater flowing into the tank from passing through, and also prevents mud contained in the rainwater from passing through. etc. are precipitated and removed in the mud chamber below, and as a result, the rainwater that overflows the upper end of the drain pipe and flows down the drain pipe contains almost no suspended matter, mud, etc.
Therefore, the floating matter will not get caught in the ground around the drain pipe and its lower end opening and will prevent rainwater from passing through and infiltrating, and the infiltration function will not deteriorate even when used for a long time, and furthermore, the filter If the MIi is made to be removable, it can be used to remove floating matter adhering to the filter and mud that has settled in the mud chamber, making maintenance management easier and allowing semi-permanent use. It has the following effects.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view of the first embodiment of the infiltration cell of the present invention, Fig. 2 is a cross-sectional view taken along the line ■-■, Fig. 3 is a cross-sectional view taken along the line m--■ in Fig. 1, and Fig. 4 is a cross-sectional view taken along the line m--■ of Fig. 1. is a sectional view of the second embodiment, and FIG. 5 is its V
-V line sectional view, Fig. 6 is a sectional view of the third embodiment, Fig. 7 is a plan view thereof, Fig. 8 is a sectional view of the fourth embodiment, and Fig. 9 is an example of a conventional seepage cell. FIG. (1) Tanks (3a) to (3d) Drain pipes (4a) to (4d) Mud chambers (5a) to (5j) Filter patent applicant Mitsui Construction Co., Ltd. Kanae Sangyo Co., Ltd. Representative Patent Attorney Koyama
Master Koto", (,1,:j:'%,,:',','
Figure 1 Figure 2 Figure 4 Figure 4b.

Claims (1)

[Claims] A drain pipe that penetrates the bottom of the tank and projects upward is provided, a mud chamber is formed in the tank outside the drain pipe, and a filter is installed in the tank at a position above the upper end of the drain pipe. An infiltration tank is characterized by the fact that it has been installed.