JPH10152881A - Rain water penetrating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rain water penetrating device which is compact, which can save a burying space, and with which a sediment tank can be replaced upon full of filling. SOLUTION: In a rain water penetrating device 10 composed of a small diameter flask 1 and a large diameter flask 2 which are fitted together in a superposed relationship, the small diameter flask 1 is composed of a lower inverted conical shape cyclone tank 11 and a sediment tank 12 removably attached to the upper surface of the cyclone tank 11, a rain water trough connection part is laid passing through the large diameter flask 2 in a circumferential direction of the cyclone tank 11, a drain pipe connection part 4 formed in its pipe wall with several drain holes 41 is laid passing through the large diameter flask 2 above the sediment tank 12. Further, an inner cylindrical pipe 6 for raising rain water flowing from the rain water trough connection part and for discharging the rain water from the connection part 4 into the outside of the small diameter flask 1 is planted in the small diameter flask 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a rainwater infiltration apparatus.

[0002]

2. Description of the Related Art Conventionally, as an example of a rainwater infiltration device buried in the ground outside a residential land, such as in a residential land, a road, or a sidewalk, there is a rainwater basin described in Japanese Utility Model Publication No. 8-22221. Can be A feature of this rainwater basin is that a mud reservoir is provided in a part of a communication path for guiding rainwater discharged from the inner pipe to a drain pipe connection portion.

[0003]

However, in the rainwater basin described in Japanese Utility Model Publication No. 8-22221, a mud reservoir is provided between the side walls of the large-diameter basin and the small-diameter basin. Therefore, the size of the mud reservoir is limited,
The problem is that the tank will be filled up with earth and sand or sludge in a short period of time, and the diameter of the large-diameter basin will need to be increased in order to provide the above-mentioned mud storage tank. In addition, there is a problem that a buried space cannot be secured.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to solve these problems, to make the apparatus compact and to bury a small space. It is an object of the present invention to provide a rainwater infiltration device capable of replacing a mud storage tank when it is full.

[0005]

According to the present invention, there is provided a rainwater infiltration apparatus comprising a small-diameter basin and a large-diameter basin, which are arranged inside and outside, wherein the small-diameter basin has a lower inverted conical shape. A cyclone tank and a mud reservoir tank detachably mounted on the upper surface of the cyclone tank, and a gutter connection portion extends through a large-diameter basin in a circumferential tangential direction of the cyclone tank, A drain connection having a large number of drain holes in the pipe wall extends through the large-diameter basin above the mud reservoir,
Furthermore, an internal pipe is provided in the small-diameter basin for raising rainwater flowing from a rain gutter connection portion and discharging the rainwater to the outside of the small-diameter basin from the drainage connection portion.

[0006]

In the rainwater infiltration apparatus of the present invention, the small-diameter basin is constituted by a cyclone tank having an inverted conical shape below and a mud storage tank detachably mounted on the upper surface of the cyclone tank. A rain gutter connection extends in the circumferential tangent direction through the large diameter basin, and a drain connection having a large number of drain holes in the pipe wall extends through the large diameter basin above the mud reservoir. Further, in the small-diameter basin, an inner cylindrical pipe for raising rainwater flowing from the rain gutter connection portion and discharging the rainwater to the outside of the small-diameter basin from the drainage connection portion is provided upright. Even if the mud reservoir is full of sludge such as pebbles and sand,
It can be lifted up, removed from the large diameter basin, and replaced easily.

Further, by disposing the mud reservoir of the small-diameter basin above the cyclone tank below, the diameter of the large-diameter basin can be reduced, and the diameter of the rainwater infiltration device can be reduced, and the volume can be reduced. As a result, the installation space can be reduced, and problems such as restrictions on the installation location can be solved.

[0008]

1 is a sectional view showing an example of a rainwater infiltration apparatus according to the present invention, and FIG. 2 is a top view of FIG. 1 and 2, the rainwater infiltration device 10 of the present invention
A cylindrical small-diameter basin 1 comprising a small-diameter basin 1 and a large-diameter basin 2 arranged in such a manner that the cylindrical small-diameter basin 1 is almost in contact with the inner peripheral surface of the cylindrical large-diameter basin 2. Have been.

The small-diameter basin 1 includes a cyclone tank 11 having a lower inverted conical shape and a mud reservoir 12 detachably mounted on the upper surface of the cyclone tank 11.
The cyclone tank 11 is formed with a bottom having a gently curved surface, and the flat bottomed mud reservoir 12 has a step 12a on the bottom edge detachably fitted to the upper edge 11a of the cyclone tank 11. They are fitted together.

As shown in FIG. 2, in the circumferential tangent direction of the cyclone tank 11, a rain gutter connecting portion 3 extends through the large-diameter tub 2, so that rainwater is introduced. .
A drain connection 4 having a large number of drain holes 41 in the pipe wall extends through the large-diameter basin 2 above the mud reservoir 12 so that rainwater from which sludge or the like has been removed is removed from the surroundings. The water is drained to the permeation layer 5.

Further, in the small-diameter basin 1 (11, 12), the rainwater flowing from the rain gutter connection portion 3 is swirled up, and the mud reservoir 1 above the small-diameter basin 1 from the drainage connection portion 4.
An inner cylindrical pipe 6 for discharging outside the pipe 2 is provided upright. The inner tube 6 sucks the swirling rainwater in the lower cyclone tank 11 from the opening 61 at the lower end, and discharges the rainwater to the mud storage tank 12 from the discharge part 62 bent and extended to the upper end. Has become. The flow rate of the rainwater discharged into the mud reservoir 12 is reduced, and the sludge containing pebbles and sand is settled in the mud reservoir 12, and only the supernatant is drained from the drain pipe connection 4. ing.

Hereinafter, the operation of the rainwater permeation apparatus 10 of the present embodiment will be described. That is, the cyclone tank 11 is connected to the rain gutter connection 3.
The rainwater flowing in the tangential direction of the circumferential portion of the inner pipe 6 flows downward while turning, but the turning diameter decreases as going downward, and the inner pipe 6 extends through the opening 61 at the lower end of the inner pipe 6. Into the mud reservoir 12 as an ascending flow from the discharge part 62 at the upper end.

The flow rate of the rainwater discharged into the mud reservoir 12 is attenuated, and changes to a gentle flow. Accordingly, sludge such as pebbles and sand mixed in the rainwater settles at the bottom of the mud reservoir 12 due to the difference in specific gravity. On the other hand, since a large number of drain holes 41 are provided around the drain pipe connection portion 4 provided above the mud reservoir 12, the mud reservoir 1
The rainwater in the supernatant layer, from which sludge such as pebbles and sand in 2, has been removed,
The water is drained from the drain hole 41 to the surrounding permeation layer 41.

As described above, in the rainwater infiltration apparatus 10 of the present invention, even if the mud reservoir 12 of the small-diameter basin 1 becomes full of sludge such as pebbles or sand, the large-diameter basin 2 is lifted up. It can be removed to the outside and replaced easily.

Further, by disposing the mud reservoir 12 above the cyclone tank 11 below the small-diameter basin 1, the diameter of the large-diameter basin 1 can be kept small, and the rainwater infiltration device 10 can be reduced in diameter. Therefore, since the volume is reduced and the size is reduced, the installation space can be reduced, and problems such as restrictions on the installation location can be solved.

As described above, as a form in which the cyclone tank and the mud reservoir are separated, for example, the cyclone tank and the mud reservoir may be connected side by side by a connecting pipe, and the same function as the present invention is secured. It is also possible to do. Also, for example, by collecting rainwater from a drainage basin installed in each home or the like in one place,
A treatment method using a mud reservoir is also possible.

[0017]

In the rainwater infiltration apparatus according to the present invention, the small-diameter basin is constituted by a cyclone tank having a lower inverted conical shape and a mud reservoir tank detachably mounted on the upper surface of the cyclone tank. A rain gutter connection portion extends in the circumferential tangential direction through the large-diameter basin, and a drain connection portion having a large number of drain holes in the pipe wall above the mud reservoir extends through the large-diameter basin. Extended, further, in the small-diameter basin, since the rainwater flowing from the rain gutter connection portion is raised, and since the inner cylindrical pipe for discharging the outside of the small-diameter basin from the drainage connection portion is erected, Even if the mud reservoir of the small-diameter basin is full of sludge such as pebbles or sand, it can be lifted upward, removed from the large-diameter basin and replaced easily.

Further, by disposing the mud reservoir of the small-diameter basin above the cyclone tank below, the diameter of the large-diameter basin can be reduced, and the diameter of the rainwater infiltration device can be reduced, and the volume can be reduced. As a result, the installation space can be reduced, and problems such as restrictions on the installation location can be solved. Therefore, it is suitably used as a rainwater infiltration device.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a rainwater infiltration device of the present invention.

FIG. 2 is a top view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Small-diameter basin 2 Large-diameter basin 3 Rain gutter connection part 4 Drainage pipe connection part 41 Drainage hole 5 Permeation layer 6 Inner pipe 10 Rainwater permeation device 11 Cyclone tank 11a Top edge 12 Mud storage tank 12a Step 61 Opening 62 Discharge part

Claims (1)

[Claims] 1. A rainwater infiltration apparatus comprising a small-diameter basin and a large-diameter basin which are arranged inside and outside doubly. A rain gutter connection part extending through a large-diameter basin in a circumferential tangent direction of the cyclone tank, and a number of drain holes formed in a pipe wall above the mud storage tank. A drain pipe connecting portion having a hole is extended through the large-diameter basin, and further, inside the small-diameter basin, the rainwater flowing from the rain gutter connecting portion is raised, and the drainage connecting portion is provided outside the small-diameter basin. A rainwater infiltration apparatus characterized in that an inner cylindrical pipe for discharging water into the vessel is provided upright.