JPH078482U - Rainwater basin - Google Patents

Abstract

(57) [Summary] [Purpose] Prevents clogging of drainage pipes by preventing dust such as fallen leaves that have flowed into the rainwater chamber from flowing into the drainage pipe and sewage main pipe, and also prevents water and fallen leaves. Provide a rainwater basin to prevent spoilage. [Structure] A filter made of crushed stone, resin strips, or the like that blocks the inflow of dust is placed above the attachment portion of the drainage pipe of the rainwater basin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a rainwater basin that is buried in the ground such as the end of a road and collects rainwater and the like flowing in from a gutter and flows it through a drainage pipe to a main sewer.

[0002]

[Prior art]

 A conventional rainwater cell is shown in FIG. This is a rectangular or cylindrical box body 31 with a drain pipe 32 attached to the side wall near the bottom, and is usually made of concrete. Reference numeral 33 is a lid having a cage-like or interstice-like gap.

[0003] This rainwater box 31 is used to collectively discharge rainwater and the like to the main sewer pipe, but at this time, it is desirable to also flush debris such as fallen leaves for beautification on the road. Good For this reason, the lid 33 is made of reinforced concrete or metal in which grooves, holes and the like having a size that allows fallen leaves to flow in are formed.

[0004]

[Problems to be solved by the device]

 However, in this conventional rainwater basin, the inflowing debris and other debris flowed directly into the sewer main pipe from the drainage pipe, which sometimes resulted in clogging of the drainage pipe. When this blockage occurs, drainage on the road is deteriorated, and when rainwater, etc., accumulates between the bottom of the box and the outlet of the drainage pipe, the water decays along with the fallen leaves, which causes a bad smell. It was

The present invention solves these problems, and an object thereof is to prevent debris such as leaves from flowing directly from the drainage pipe to the sewer main pipe, and to provide a rainwater box in which the drainage pipe is not clogged. To do.

[0006]

[Means for Solving the Problems] The present invention is a rainwater basin for achieving the above object, and comprises crushed stones, resin strips, and the like that prevent the inflow of dust above the attachment portion of the drainage pipe. It is characterized by having a filter.

[0007]

[Action]

 Dead leaves, pebbles, mud, etc. that flowed into the main body of rainwater through the gap between the lids pile up upward when passing through the filter part, and only rainwater permeates and drains into the sewer main pipe from the drainage pipe.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment in which a mounting shelf is installed in a rainwater cell in order to position a filter above a drain pipe. FIG. 2 is a cross-sectional view showing an embodiment in which a drainage pipe is attached to the bottom of a rainwater chamber and a filter is arranged thereon. FIG. 3 is a cross-sectional view showing a conventional rainwater basin.

Reference numeral 1 is a rainwater cell main body made of square or cylindrical concrete, and a drain pipe 2 is attached to the side wall at the lowest portion. Although not shown, the drainage pipe 2 is connected to a sewer main pipe buried in the ground. A lid 3 which is made of metal or reinforced concrete and has a gap in the shape of a cage or a mesh is covered on the upper end of the rainwater chamber 1. Further, steps 5a and 5b are provided on the inner wall of the rainwater chamber 1 and above the mounting portion of the drainage pipe 2 for mounting the filter 4 which will be described later.

As the filter 4, in addition to crushed stone, shavings of metal, glass, plastic, small pieces of wood, and the like placed in a mesh bag or a perforated container are used. Further, the shape of the filter is not limited to the above, and may be in the form of a block, a plate, a rod, or a fiber in addition to the small piece. In particular, the fibrous material such as glass fiber is lightweight and convenient to handle. Any size of crushed stone can be used, but if the particle size is too small, the permeation efficiency will be poor, so that it will be rough enough to prevent fallen leaves, butts and the like from permeating. It is preferable that

Since the filter 4 may drop due to its weight if it is simply placed on the steps 5a and 5b, a support base 6 is arranged below it. The support base 6 is composed of a rectangular or circular base 7 and a support leg 8 matching the shape of the inner wall of the rainwater chamber 1, and is made of reinforced concrete, metal or plastic. The table 7 is formed with a groove or a hole having a size that allows rainwater to easily pass therethrough and prevents crushed stones of the filter 4 from falling. It should be noted that, although the rainwater cell having a step is shown in the above-mentioned embodiment, since the filter can be mounted on the support base, there is no problem even if there is no step. In particular, the step is not necessary when the filter has an irregular shape and is put in a mesh bag.

Next, the actual use of the rainwater basin having such a configuration will be described. After the support base 6 is installed on the bottom of the rainwater chamber 1, the filter 4 containing small pieces of crushed stone, glass, plastics or the like is placed in a net bag or a perforated container, and then the lid 3 is covered. Rainwater flows in along with fallen leaves, pebbles, etc. from the gap of the lid 3, passes through the filter 4, and flows out through the drainage pipe to the main sewer pipe. When rainwater passes through the filter 4, leaves, pebbles, etc. are filtered by the filter 4 and accumulated on the top of the filter 4, so that the water flowing out from the drainage pipe 2 does not contain dust such as leaves.

FIG. 2 shows another embodiment of the rainwater basin according to the present invention. The rainwater box 21 has a drainage pipe 22 led out from the bottom surface thereof, and has a filter 24 directly placed on the bottom surface. Reference numeral 26 is a perforated plate that prevents crushed stones of the filter placed at the outlet between the drains from flowing out. Reference numeral 23 is a lid that fits over the rainwater chamber 21, and is made of iron or concrete having a cage-like or knit-like gap.

In the embodiment shown in FIG. 1, a mesh bag as a filter and a container in which crushed stones are put are shown. However, like the one shown in FIG. 2, the crushed stones are directly supported on the support base 6 or the plate. Can be placed on top.

[0015]

[Effect of device]

 The present invention having the above-described configuration filters relatively large debris such as fallen leaves, as well as small stones, and only rainwater passes through and drains from the drain pipe, so there is no risk of clogging the drain pipe and sewer main pipe. . Therefore, the amount of garbage flowing into the sewage treatment plant will naturally decrease, and since the dust accumulated on the filter is in a dry state, it is easy to separate and collect it, and since it does not decay, the collection work is sanitary. You can Also, since the filter is always in a dry state, it is possible to prevent the generation of offensive odors, which is useful for improving the environment. Furthermore, if crushed stones, etc. are used as the material used for the filter, used plastic waste materials, waste materials, glass, metal shavings, etc., can be obtained at extremely low cost, and the resources can be recycled. It has many practical effects such as being able to contribute to use. When using a rainwater basin with a drainage pipe near or attached to the bottom of the rainwater basin as shown in Fig. 1 and Fig. 2, rainwater, etc. should be placed between the bottom of the rainwater basin and the outlet of the drainage pipe. Since the water does not stay, the spoilage of water is prevented and the effect of the present invention becomes more remarkable.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment in which a mounting shelf is installed in a rainwater cell in order to position a filter above a drain pipe.

FIG. 2 is a cross-sectional view showing an embodiment in which a drainage pipe is attached to the bottom part of a rainwater chamber and a filter is arranged on the drainage pipe.

FIG. 3 is a cross-sectional view showing a conventional rainwater basin.

[Explanation of reference symbols] 1 rainwater chamber 2 drainage pipe 3 lid 4 filter 5a step 5b step 6 support 7 7 8 legs 21 rainwater 22 drainage pipe 23 lid 24 filter 26 eye plate

Claims (1)

[Scope of utility model registration request] 1. A crushed stone, which is buried in the ground such as a road edge and flows collected rainwater or the like to a sewer main pipe through a drainage pipe, which blocks the inflow of dust above the attachment portion of the drainage pipe, A rainwater chamber characterized by arranging a filter made of resin strips and the like.