JP2535340Y2 - Rainwater seepage measure filter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for a rainwater infiltration basin.

[0002]

2. Description of the Related Art In recent years, in urban areas, not only roads and sidewalks, but also pavements such as front yards and parking lots of buildings have become widespread and the exposed surface area has decreased drastically. It has become difficult. Rainwater recycling systems are also increasing rapidly, and rainwater that falls on roofs and roof porches is collected in underground storage tanks via gutters, and after being used for miscellaneous water, is discharged to the sewer. However, the amount of rainwater that seeps underground is getting smaller and smaller. For this reason, there is a shortage of root water that is indispensable for the growth of street trees,
Environmental problems are also becoming more serious as a result of land subsidence due to the decrease in groundwater. Therefore, in order to address these problems, it is presently being recommended to install a rainwater infiltration basin for infiltrating rainwater into the underground.

Therefore, as a countermeasure, initially, a box or pipe having a large number of pores made of concrete or synthetic resin is buried under a water collecting port provided in a drainage ditch beside a road, and crushed stones and the like are circumscribed therearound. Was arranged. However, in this configuration, dust and mud, etc., flow in together with the rainwater to cause clogging of the box and the pipe material, which not only deteriorates the permeation function but also makes it difficult to release the clogging.

Therefore, in the conventional rainwater infiltration basin, a ceramic filter having a large number of pores is installed below the rainwater infiltration basin to merely prevent intrusion of foreign substances such as dust and mud into boxes and pipes. And the filter itself can be cleaned.

[0005]

[Problems to be Solved by the Invention] By the way, in the case of a filter that is installed at the bottom of a rainwater infiltration basin and made of ceramics, like a conventional filter, leaves and paper debris are widely adhered to the surface of the filter. In order to promote clogging, the filtration capacity was rapidly reduced, and the period of regular cleaning had to be shortened. Furthermore, in cleaning work, not only is it troublesome to release clogging of the pores, but also because the filter is heavy,
Since the workability of taking out and installing is bad and it is easy to break,
There is a disadvantage that the number of replacements is large and the cost is not preferable.

[0006] The present invention has been made in view of such problems of the prior art, and can maintain a high filtration capacity at all times, and has a long period of regular cleaning.
An object of the present invention is to provide a filter for rainwater infiltration basins that has excellent workability for removal and that can be easily and quickly cleaned.

[0007] The present invention combines a coarse filtration basket set immediately below a water cover at a water collection opening and a filtration net set at a lower end in a water collecting cylinder portion of a rainwater infiltration basin.
The filtering net is formed in a cylindrical shape with a bottom, and the upper edge of a net made of synthetic fibers of a mesh smaller than the pores of the rainwater permeation portion is locked to a reinforcing frame made of synthetic resin. And a funnel-shaped guide frame made of an elastic body having an outer periphery closely contacting an inner peripheral surface of the water collecting cylinder portion, and a hook attached thereto. .

[0008]

According to the present invention, a filter net is suspended by hooking a hook at a water collecting port of a rainwater infiltration basin with a water cover removed, and set at a lower end of a water collecting cylinder. Then, after the filter basket is set using the water collecting port, a water cover is attached and the setting of the filter is completed. Therefore, as rainwater infiltrates, large contaminants such as fallen leaves and paper debris that collect at the water collection port are left on the water cover, and small leaves and pieces of paper that pass through the water cover are stopped by the filtering basket and accumulated. In addition, since small dust and mud are restrained by the mesh of the filter mesh, only the filtered rainwater is led to the rainwater infiltration part, so that the pores are not clogged. Is always kept in good condition. Further, regarding the cleaning of the filter, since the filter car is located immediately below the water cover, it is possible to easily check and clean the remaining contaminants. Periodic removal of the filter mesh is easy because of its lightweight structure, and cleaning is easy and quick.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these embodiments. As shown in FIG. 1, the rainwater infiltration basin filter 10 is formed by combining a filtering net 20 and a filtering basket 30.
The rainwater infiltration basin 40 is provided with a water collecting opening 42 having a step 43 on the pavement and opening, and a cylindrical water collecting cylinder 41 with a bottom.
And a perforated pipe 44 as a rainwater infiltration portion provided in communication with the lower end side surface of the water collecting cylinder portion 41, and a water flow cover 46 detachably mounted on the water collecting port portion 42. A large number of pores 45 are formed in the peripheral wall of the perforated pipe 44, and a large number of crushed stones 51 are embedded in the outer surface of the peripheral wall.

The filtering net 20 is made of a mesh fabric made of polyester fiber and having a mesh size of 0.1 to 2.0 mm. The net 21 is sewn in a cylindrical shape with a bottom and a circular shape made of vinyl chloride resin. The formed reinforcing frame 24, a funnel-type guide frame 28 using rubber as an elastic body whose outer periphery is in close contact with the inner peripheral surface of the water collecting cylinder 41, and are connected to the reinforcing frame 24 via a connector 25, And a pair of hooks 26 each having a hook 27 formed at the tip. In addition, as shown in FIG.
Is bent outward to wrap the reinforcement frame 24,
Further, both ends of a string 23 penetrating a string through hole 22 formed by bending and suturing the tip of the upper edge are connected to form a reinforcing frame 24.
, The net 21 is locked. The guide frame 28 is fixed to the upper edge of the reinforcing frame 24 by a plurality of attachments 29 attached to the inner peripheral edge thereof.

As shown in FIG. 3, the filtering basket 30 is a shallow cylindrical dish-shaped coarse mesh having a protruding portion 32 projecting outward on an upper surface thereof, and a supporting rod 31 formed in a cross shape. Welded.

Therefore, in order to set the filter 10 for the rainwater infiltration basin to the rainwater infiltration basin 40, first remove the water passage cover 46, and then place the filter net 20 in the water collection cylinder 41 with the pair of hooks 26 in hand. To the catching part 4 of the catch 26
It is locked by the second step 43 and suspended. Next, filter basket 3
0 is set by placing the protrusion 32 of the support 31 on the step 43. Subsequently, the water cover 46 is fitted into the step 43, and the setting of the filter 10 is completed.

The rainwater that collects in the drain 50 due to rainfall flows into the water collecting cylinder 41 through the water flow cover 46. At this time,
The large leaves and paper debris brought to the rainwater remain on the surface of the water passage cover 46, but further small impurities such as leaf pieces and pieces of paper pass through the water passage cover 46 and are blocked and accumulated in the filtering basket 30. The dust and mud passing through the filter basket 30 further descend with the rainwater, but since the guide frame 28 is in close contact with the inner peripheral surface of the water collecting cylinder 41,
All are guided into the net 21 of the filtering net 20 and flow therethrough.
Since the mesh size of the net 21 is smaller than the pores 45 of the perforated pipe 44, dust and mud contained in the filtered rainwater are discharged to the crushed stones 51 without being blocked by the pores 45. Even if it is done, clogging does not occur.
The penetration capacity of 0 is always kept high. In addition, foreign substances such as dust and mud remaining on the net 21 accumulate at the bottom thereof. However, since the net 21 is formed in a cylindrical shape, rainwater flows out from the upper side surface of the staying foreign substances, and is present. Since the process proceeds to the hole tube 44, the period until cleaning is significantly extended as compared with the conventional example.

The filter 10 can be cleaned appropriately by removing the water-passing lid 46 from the filter basket 30 so that residual impurities can be easily removed. Since the tool 20 is lightweight, it can be easily and easily taken out by the hook 26 at a glance, and can be quickly and completely cleaned by pouring pressurized water into the inverted net 21, and there is no possibility of breakage.

As shown by a two-dot chain line in FIG. 1, a plurality of bolts 52 projecting inward from the lower end of the water collecting cylinder 41.
Is provided, the lower end of the reinforcing frame 24 may be placed on these bolts 52.

Although the embodiment of the present invention has been described above, the specific structure and operation are not limited to this embodiment, and the present invention is applicable even if there is a design change within the scope of the present invention. include. For example, in the embodiment,
Although the water collecting cylinder part 41 was made into a cylindrical shape, a rectangular cylindrical shape may be used. In that case, the filtration basket 30 is formed in a square shape,
The outer shape of the guide frame 28 may be square. In the embodiment, the net 21 is made of polyester. However, polyethylene, polyolefin such as polypropylene, nylon,
A mesh body such as a vinyl chloride resin or a water-permeable woven or knitted fabric or nonwoven fabric may be used.

As described above, in the rainwater infiltration basin filter according to the present invention, the coarse filtration basket and the lower end portion, which are set immediately below the water-collecting lid at the water collection opening, are provided in the water collecting cylinder of the rainwater infiltration basin. Combined with the filter net set to
The filter net is formed in a cylindrical shape with a bottom, and the upper edge of the net made of synthetic fibers of a mesh smaller than the pores of the rainwater infiltration part is locked by a reinforcing frame made of synthetic resin. Since the funnel-shaped guide frame of an elastic body closely contacting the outer periphery is mounted on the inner peripheral surface of the water collecting cylinder portion and the hook is attached thereto,
Since the contaminants that are carried into the rainwater and flow in are filtered stepwise in the order of size, the filtering function of the filter mesh is permanently maintained, and the high filtration ability is always maintained without clogging the rainwater infiltration part. Can be. Therefore, the period of the periodic cleaning is also long. Also, since the filter is light and can be easily attached and detached, it is excellent in workability, and it is possible to easily and quickly remove residual contaminants and clean the net.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a setting state of a filter for a rainwater infiltration basin according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a locked state of a net and a reinforcing frame of the filter for a rainwater infiltration basin according to the embodiment of the present invention.

FIG. 3 is a perspective view showing a filter basket of the filter for rainwater infiltration basins according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Filter for rainwater infiltration basin 20 Filtration net 21 Netting 24 Reinforcement frame 26 Hook 28 Guide frame 30 Filter basket 40 Rainwater infiltration basin 41 Water collecting cylinder part 42 Water collecting port part 44 Perforated pipe 45 Pores 46 Water passage lid

Claims (1)

(57) [Scope of request for utility model registration] 1. A water collecting cylinder portion of a rainwater infiltration basin is formed by combining a coarse filtering basket set immediately below a water cover at a water collecting port portion and a filtering net set at a lower end thereof. , Formed in a cylindrical shape with a bottom, the upper edge of the mesh body made of synthetic fibers of a mesh smaller than the pores of the rainwater permeation portion is engaged with a reinforcing frame made of synthetic resin, and the collecting frame is attached to the reinforcing frame. A filter for a rainwater infiltration basin, comprising a funnel-shaped guide frame made of an elastic body closely attached to the outer periphery on the inner peripheral surface of the portion and attached with a hook.