JP2015229862A - Filter structure for rainwater permeating basin, and rainwater permeating basin and rainwater permeating structure provided with the filter structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter structure that can enlarge the filter area, along with a rainwater permeating basin that allows the height position of the filter structure on a permeating pipe to be adjusted and can reduce the amount of rainwater pooled at the bottom of the rainwater basin, and a rainwater permeating structure that can remove harmful substances in the rainwater.SOLUTION: A filter structure has a lower frame body of a hat shape of which an outer diameter equals an outer diameter of a collar part of an upper frame body, while a width of a collar part of the lower frame body is larger than a width of the collar part of the upper frame body, and furthermore an intermediate frame body is inserted into the upper and lower frame bodies, or a filter storage unit is installed on the upper frame body. A rainwater passage part is formed on a side wall part of the frame bodies other than the lower frame body. A rainwater permeating basin and a rainwater permeating structure has zeolite filled in a permeating pipe.

Description

  The present invention relates to a rainwater infiltration trough that infiltrates collected rainwater into the ground, a filter structure disposed at an upper end of an infiltration cylinder provided in a bottom wall opening of the rainwater trough, and a rainwater infiltration trough comprising the structure. And rainwater infiltration structures.

  With the progress of urbanization, the increase of rainwater impervious areas such as roofs and road pavement has caused adverse effects such as frequent flooding, deterioration of water quality, deterioration of groundwater level, deterioration of green spaces and roadside trees. Invited. In recent years, in order to solve these problems, it is encouraged to infiltrate rainwater into the ground and restore the water circulation function.

As means for infiltrating rain water into the ground, a rain water infiltration dredge facility (rain water infiltration structure) shown in FIG. 12 is known (see Patent Document 1).
This rainwater seepage dredging facility includes a rainwater seepage dredge that collects rainwater in a site such as a road or a house, and an infiltrating section that allows the rainwater collected in the seepage drench to penetrate into the ground.
The rainwater infiltration basin 1 is usually surrounded by a rainwater basin 2 made of concrete, and a stormwater basin lid 3 having holes (not shown) formed as a plurality of stormwater passages is installed at the top, and is disposed on the side wall. Is connected to a drain pipe 4 for discharging rainwater to a sewer pipe or the like. Reference numeral 5 denotes a bottom portion (a mud pool portion) of the rainwater tank.
A through-hole 7 is formed in the bottom wall 6 of the rain gutter 2, and a filter structure 10 is provided in which an infiltration cylinder 8 is erected at the opening of the through-hole and a filter is accommodated at the upper end of the infiltration cylinder. Is arranged.

  The filter structure 10 constitutes a filter storage portion for storing the filter 24 with the openings of the hat-shaped upper frame body 11 and the lower frame body 12 facing each other. A pillar 15 having a bolt hole is formed at the center of the upper and lower frames, and bolts 22 are passed through the pillars of the upper frame and the lower frame, and the tip of the bolt is below the lower frame. Is tightened with a nut 23. A hook 21 is attached to the upper end of the bolt so that the filter structure can be easily replaced or mounted.

An infiltration portion 33 is provided below the infiltration cylinder 8 of the rainwater tank.
The infiltration portion 33 is filled with crushed stone 35 with a hole formed in the ground below the infiltration cylinder of the rainwater tank. The crushed stone is usually stored in a bag-shaped water-permeable sheet 34 so that sand in the ground is not mixed with the crushed stone.

In this conventional invention, the rainwater collected from the rainwater basin first stays in the mud pool of the bottom 5, and when the water level exceeds the height of the filter structure 10 of the permeation cylinder 8, the rainwater is filtered out. And after the dust, sand, etc. are removed by the filter 24, it flows into the infiltration portion 33 from the infiltration cylinder.
Rainwater that has flowed into the infiltration section passes between the crushed stones and penetrates into the ground through the water-permeable sheet.

By the way, the conventional rainwater infiltration facilities have the following problems (A) to (D).
(A) The area of the upper frame of the filter structure cannot be increased.
The conventional filter structure disposed at the upper end of the rainwater infiltration tank has a filter housed in both frames with the openings of the upper and lower frames facing each other. Is the same as the diameter of the lower frame. Further, the lower frame is disposed at the upper end of the infiltration cylinder of the rainwater infiltration tank, and the main body of the lower frame is adjusted to the diameter of the infiltration cylinder.
For this reason, the rainwater inflow area of the filter which can be accommodated in the upper frame is the same size as the lower frame, and the rainwater inflow area of the filter of the upper frame cannot be increased more than the lower frame. If the rainwater inflow area of the filter of the upper frame is small, the filter is likely to be clogged. When clogging occurs, the water flow capacity of the filter decreases, and the function of the filter structure cannot be exhibited.

(B) The height position of the filter structure at the upper end of the permeation cylinder cannot be adjusted.
There are a so-called base cut method and a peak cut method for treating rainwater that has flowed into the rainwater trough.
In the base cut method, as shown in FIG. 12, after the rainwater into which the rainwater inflow has exceeded the height of the filter structure 10 of the infiltration cylinder 8, the rainwater flows out into the drain pipe 4 and is discharged to the sewer pipe or the like. This is a system in which the inflowing rainwater is infiltrated into the infiltration part, and the rainwater exceeding the infiltration capacity of the infiltration part is discharged from the drain pipe 4.
On the other hand, with the peak cut method, the height of the drain outlet of the drain pipe is made lower than the height of the filter structure, and when the amount of rainwater inflow is small, it is discharged through the drain pipe to the sewer pipe, etc. When the height of the filter structure is exceeded, rainwater flows from the infiltration cylinder into the infiltration portion.
Any of these methods is adopted depending on the installation environment and penetration capability.
However, the height of the attachment position of the drainage pipe 4 provided on the side wall of the rain basin 2 varies, and the position of the drainage pipe and the height position of the filter structure on the permeation tube can be easily set to a more suitable positional relationship. Could not adjust.

(C) When the permeation cylinder stands up from the bottom wall of the rainwater infiltration trough, when rainwater accumulates at the bottom of the rainwater trough and stays for a long time, a strange odor or a bow flaring occurs. There is.
In order to maintain the living environment and to prevent mosquito-borne disease epidemics, it is desirable to reduce the amount of rainwater staying at the bottom 5 of the rainwater basket as much as possible.

(D) The harmful substances contained in rainwater cannot be removed sufficiently.
The rainwater that flows into the rainwater tank contains heavy metals such as lead and zinc that are generated from the tires and exhaust gas of automobiles traveling on the road. Many heavy metals are toxic.
Conventional rainwater infiltrates can remove dirt and sand with a filter and allow rainwater to penetrate into the ground, but cannot remove harmful substances such as lead dissolved in rainwater.

JP 2010-255219 A

The present invention has been made to solve the above-described problems, and aims at the following (1) to (4).
(1) The area of the upper frame of the filter structure can be increased.
(2) It is possible to adjust the height position of the filter structure on the permeation cylinder.
(3) The amount of rainwater staying at the bottom of the rainwater tank can be reduced.
(4) Rainwater from which harmful substances such as heavy metals are removed can penetrate into the ground.

The present invention employs the following means in order to solve the above problems.
[1] Each of the frames has a hat shape, and the upper frame body having a rainwater passage hole in the main body ceiling portion is opposed to the opening portion of the lower frame body so that the collar portions of the two frames are brought into contact with each other. Constructs a storage part, and forms a column having a bolt hole at the center of each frame, and inserts a bolt with a hook fitting at the upper end into the bolt holes of the upper frame and the lower frame. It is a rainwater infiltration filter structure with nuts bolted under the pillars of the frame, and the lower frame has the same outer diameter of the collar as the outer diameter of the upper frame, A rainwater infiltration filter structure, wherein the width of the collar portion is larger than the width of the collar portion of the upper frame body, and the diameter of the upper frame body is larger than the diameter of the lower frame body. .
[2] An upper frame, an intermediate frame, and a lower frame each having a hat shape and having a rainwater passage hole in the main body ceiling, and facing the openings of the upper frame and the intermediate frame The first and second filter housings are formed in the two frames by bringing the two ribs into contact with each other. The lower frame has its ribs in the middle with the opening facing the back of the intermediate frame. By making contact with the back of the main body of the frame, a second filter housing is formed in the lower frame, a column having a bolt hole is formed at the center of each frame, and a hook is attached to the upper end. This is a filter structure for rainwater seepage traps in which the bolts that have been stopped are inserted into the bolt holes of the upper frame, the intermediate frame, and the lower frame, and the bolt ends are tightened with nuts under the pillars of the lower frame. The frame body is the outer diameter of the collar, the width of the collar, and the Is the same as the upper frame, and the lower frame has the same outer diameter of the collar as the outer diameter of the upper frame (intermediate frame) and the width of the upper frame (middle). The rainwater infiltration filter, characterized in that the diameter of the upper frame (intermediate frame) main body is larger than the diameter of the lower frame main body, which is larger than the width of the collar portion of the lower frame body Structure.
[3] On the upper frame body, two frame bodies having the same outer diameter, collar width, and frame body diameter as the upper frame body and the collar portion are opposed to each other so that the opening portions of the two frame bodies face each other. At least one or more filter housing units that are in contact with each other to form a filter housing portion are arranged, and bolts with hooks hooked to the upper ends thereof are bolted to the units, the upper frame body, and the lower frame body. The rainwater seepage trough filter structure according to [1], wherein the bolt end is tightened with a nut under the support of the lower frame.
[4] Two frame bodies having the same outer diameter, collar width and collar body diameter as the upper frame body and the collar body body are arranged on the upper frame body so that their openings face each other. At least one filter housing unit constituting a filter housing portion in both frames, and inserting the bolts into bolt holes of the unit, the upper frame, the intermediate frame, and the lower frame. And the filter structure for rainwater seepage traps according to [2], wherein a bolt end is tightened with a nut under a support of a lower frame.
[5] The rainwater infiltration tank according to any one of [1] to [4], wherein a rainwater passage part into which a plurality of rainwater flows is provided in a main body side wall part of a frame other than the lower frame. Filter structure.
[6] A rainwater infiltration trough comprising the filter structure according to any one of [1] to [5] at an upper end of an infiltration cylinder provided at an opening of a rainwater trough bottom wall.
[7] A rainwater infiltration structure comprising the rainwater infiltration basin according to [6] and an infiltration portion provided below a bottom wall opening of the rainwater infiltration basin, wherein a lower end of the infiltration cylinder is a bottom wall of the stormwater infiltration And extending into the lower ground through the opening, forming a plurality of rainwater permeation holes in the tubular wall of the portion of the permeation tube in the ground, and storing the same portion in a bag-like water-permeable sheet, A rainwater infiltration structure characterized in that an infiltration portion is formed by housing zeolite in the infiltration cylinder.

  In the filter structure of the present invention, by increasing the area of the filter that can be stored in the upper frame other than the lower frame, the occurrence of clogging of the filter can be reduced, and the water passing function of the filter structure can be reduced. Can be kept longer in good condition. Moreover, the height position of the filter structure body arrange | positioned at the upper end of an infiltration pipe | tube can be adjusted in a rain water tank by using an intermediate part frame body and a filter storage body unit. Furthermore, this filter structure can reduce the amount of rainwater which retains in the bottom part of a rainwater basin by providing a rainwater passage part in the side wall part of these frames. Moreover, in the rainwater infiltration structure of the present invention, by storing zeolite in the infiltration cylinder, it is possible to infiltrate rainwater excluding heavy metals such as harmful substances into the ground.

An example (a) of the embodiment of the filter structure of the present invention and its assembly drawing (b) are shown. Another example of embodiment of the filter structure of the present invention is shown. Another example of embodiment of the filter structure of the present invention is shown. Another example of embodiment of the filter structure of the present invention is shown. Another example of embodiment of the filter structure of the present invention is shown. The top view (a) and AA sectional view (b) of the lower frame are shown. The top view (a) and AA sectional view (b) of an upper frame (intermediate frame) are shown. The perspective view [(a) opening is downward and (b) opening is upward) of the upper frame (intermediate frame) which has a rain water passage part is shown. The bolt [(a) front view, (b) side view] which latched the hook metal fitting is shown. 1 shows an example of a rainwater infiltration trough and a rainwater infiltration structure according to the present invention. 1 shows an example of a rainwater infiltration trough and a rainwater infiltration structure according to the present invention. A conventional rainwater infiltration facility is shown.

First, the rainwater infiltration filter structure according to the present invention disposed at the upper end of the rainwater infiltration cylinder will be described with reference to FIGS.
The filter structure 10 of the present invention shown in FIG. 1 is configured such that the opening portions of the hat-shaped upper frame body 11 and the lower frame body 12 face each other and the flange portions (flange portions) 13 and 14 thereof are brought into contact with each other. A filter storage portion for storing the filter 24 is formed in both frame bodies. And this structure 10 is arrange | positioned at the upper end of the infiltration pipe | tube 8 of a rain water tank, and the main body of the lower frame 12 is inserted in the upper end of an infiltration pipe | tube.
Here, the hat shape refers to a hat shape (vertical section is substantially U-shaped) having a collar portion (flange portion). In addition, the main body of the frame refers to a portion excluding the collar portion from the frame. The main body side wall may be inclined outward (for example, about 1 to 5 °) or may be vertical.

In this filter structure 10, the width of the collar portion 14 of the lower frame is made larger than the width of the collar portion 13 of the upper frame, and the outer diameter of the collar portion of the upper frame 11 and the lower frame 12 is made equal. Therefore, the diameter (outer diameter and inner diameter) of the main body of the upper frame is larger than the diameter (outer diameter and inner diameter) of the main body of the lower frame.
By doing in this way, a filter with a larger rainwater inflow area than the filter accommodated in the lower frame can be accommodated in the upper frame.
The filter becomes clogged with dust and sand with the passage of time, and the water flow capacity of the filter decreases.However, the filter can be clogged by storing a filter with a large rainwater inflow area in the upper frame. Can be reduced. As a result, the water passing function of the filter structure can be maintained in a good state for a longer time.

For example, when the diameter of the main body of the lower frame is 150 mm, if the upper frame having a main body diameter of 200 mm is used, the width of the collar of the lower frame is about 35 mm and the width of the collar of the upper frame is 10 mm. When the degree is set, the outer diameters of the upper and lower frames can be made equal. In addition, dimensions, such as the frame internal diameter of this invention, the outer diameter of a collar part, and a width | variety, are not limited to these numerical values.
The frame is made of, for example, a synthetic resin material. Although it does not restrict to this as a material, it is preferable to make with the material which does not corrode easily.

  A pillar 15 having a bolt hole 16 is formed at the center of each frame, and lattice-like ribs 17, 17... Are provided on the main body ceiling of the frame, and a number of rainwater passage holes 18, 18 ... are formed. FIG. 6 shows ribs 17, 17... And rainwater passage holes 18, 18... In FIG. 7, and ribs 17, 17.・ ・ Are shown respectively. These rainwater passage holes do not need to be formed by lattice-like ribs as long as rainwater can be circulated, and may be anything.

  Then, as shown in FIG. 1, a bolt 22 with a hook 21 attached to the upper end is inserted into the bolt hole 16 of the support 15 of the upper frame and the lower frame, and the bottom of the support 15 of the lower frame 12 is inserted. Then, by tightening the tip of the bolt with the nut 23, both frame bodies are fixed.

  The hook 21 is easily hooked with a hook or the like so that the filter structure can be easily taken out and rearranged from the permeation tube 8 in the rainwater basket. The bolt 22 which latched the L-shaped hook metal fitting 21 in which the hole which can insert is formed is shown. When the hook is pulled, the filter structure can be easily removed from the permeation tube because a pulling force is applied when the hook is pulled out of the center of the bolt hole of the frame.

  The filter 24 stored in the filter storage unit may be any filter as long as it has a function of filtering dust and sand. Usually, synthetic resin fibers are used and are stored around the columns of each frame. It is desirable to fill the space without excess or deficiency. To facilitate storage, the filter may be shaped like a donut or wrapped in a net.

You may form the convex part 19 and the recessed part 20 which mutually fit in the surface where the collar parts of an upper part and a lower frame contact (refer FIG. 6, FIG. 7).
When the convex part 19 or the concave part 20 of the lower frame body is fitted into the concave part or the convex part of the upper frame body and both the frame bodies 11 and 12 are brought into contact with each other on the surface of the collar part, the frame bodies are mutually attached on the surface of the collar part. The upper and lower frames can be installed more stably without shifting.

  The concave portion and the convex portion do not need to be formed, but at least one location on the surface of each collar portion, preferably at two or more locations facing each other on the circumference of the collar surface, more preferably at four or more locations at equal intervals on the collar surface. It is desirable to form a convex part or a concave part.

  FIGS. 6A and 6B show an example in which the convex portions 19 or the concave portions 20 are doubly formed at four equally spaced positions on the surface of the collar portion of the lower frame. FIGS. 7A and 7B show an example in which convex portions 19 or concave portions 20 are formed at four equally spaced positions on the surface of the collar portion of the upper frame. Further, as can be seen from FIG. 8 (b), the upper frame body is provided with a support portion (no drawing number) for the rib 17, and a similar convex portion or concave portion is formed on the surface of the support portion that is continuous with the collar surface. May be.

As already described, a number of rainwater passage holes 18 are provided in the ceiling portion of each frame body, but a rainwater passage portion 25 through which rainwater flows is also provided in the side wall portion of the main body of the upper frame body. Can do. FIG. 8 shows a structure in which a plurality of such rainwater passage portions 25 are perforated.
The rainwater passage portion 25 may not be a notch as shown in FIG.

In this way, rainwater flowing into the rainwater tank flows into the filter housing not only from the upper surface (ceiling surface) of the upper frame body but also from the rainwater passage 25 on the side wall of the upper frame. When it stays in the rainwater trough, the water level of rainwater can be lowered. If the height of the infiltration cylinder 8 provided on the bottom wall of the rainwater tank is lowered, the level of rainwater staying at the bottom part (sudging part) 5 of the rainwater tank can be further reduced (see FIG. 11 described later).
If the water level of the rainwater staying at the bottom of the rainwater tank can be lowered, the rainwater will accumulate at the bottom of the rainwater tank (the mud pool) and will not stay for a long time, leading to the prevention of the generation of off-flavors and bow flares. It can contribute to maintaining a comfortable living environment and preventing mosquito-borne disease epidemics.

  The following FIGS. 2-6 show a filter structure of the present invention of a different type from that shown in FIG. Also in the invention, each frame constituting the filter structure is a hat-shaped frame. A rainwater passage hole is formed in the ceiling of the main body of each frame body, and a column having a bolt hole is formed in the center thereof, and a bolt with a hook fitting locked at the upper end is inserted into the bolt hole of each frame body. Then, the tip of the bolt is nut-tightened under the support of the lower frame body, and the filter structure is formed.

A filter structure 10 according to the present invention shown in FIG. 2 includes an upper frame body 11, an intermediate frame body 26, and a lower frame body 12, and an intermediate frame body between the upper frame body 11 and the lower frame body 12. 26 is inserted.
Here, the intermediate part frame 26 has the same outer diameter of the collar part, the width of the collar part, and the diameter (outer diameter and inner diameter) of the frame body as the upper frame body 11, and is the same as the upper frame body and the lower frame body. A column having a rainwater passage hole in the ceiling of the frame body and a bolt hole in the center of the frame is formed. The height of the intermediate frame 26 may be the same as or different from the height of the upper frame 11.
Then, the upper frame body 11 and the intermediate frame body 26 are opposed to each other so that the flange portion 13 of the upper frame body and the flange portion 27 of the intermediate frame body are brought into contact with each other. The storage part is configured.

In the lower frame, the width of the collar portion 14 is larger than the width of the collar portion 13 (27) of the upper frame (intermediate frame body), and the outer diameter of the collar portion is set to the upper frame (intermediate frame body). ) Is the same as the outer diameter of the collar. Therefore, the diameter of the upper frame (intermediate frame) main body is larger than the diameter of the lower frame main body.
And the lower frame 12 comprises the 2nd filter accommodating part in the frame of a lower frame by making the collar part 14 contact the peripheral part of the main body back surface of the intermediate part frame 26, and a filter Stored. The back surface refers to the surface opposite to the opening side of the frame.

As shown in FIG. 1, convex portions and concave portions that fit into each other are formed on the peripheral portion of the back surface of the main body of the intermediate frame 26 and the surface of the collar portion 14 of the lower frame that contacts the peripheral portion. It may be formed. In this way, both installations can be performed stably.
In FIG. 2, the recess 20 shown in FIG. 6A (the recess 20 formed on the inner side) is formed on the flange surface of the lower frame, and the recess on the peripheral edge of the back of the intermediate frame 26 body. It is shown that the convex part 19 which fits is formed.

  In the present invention, like the filter structure shown in FIG. 1, the rainwater inflow area is larger in the frames of the upper frame 11 and the intermediate frame 26 than in the filter housed in the lower frame. A filter can be accommodated and clogging of the filter can be reduced. As a result, the water passing function of the filter structure can be maintained in a good state for a longer time.

  Further, the intermediate frame has the same outer diameter of the collar, the width of the collar, and the diameter (outer diameter and inner diameter) of the frame main body as the upper frame 11. Therefore, only the direction of the opening of the frame is changed. And can be used for the upper frame. Similarly, the upper frame has the same outer diameter of the collar portion, the width of the collar portion, and the diameter (outer diameter and inner diameter) of the frame body as the intermediate frame body, so only the direction of the opening of the frame body is changed. Thus, it can be used for the intermediate frame.

  As shown in FIG. 2, the upper, middle, and lower frames are inserted with bolts 22 with hooks 21 attached thereto, and nuts of bolts are nuts under the columns of the lower frame. Fastened with 23 and fixed.

In the filter structure shown in FIG. 2, since the intermediate frame 26 is inserted between the upper and lower frames (11, 12), the upper end of the permeation cylinder 8 is increased by the height of the intermediate frame. It is possible to increase the height position of the filter structure 10 disposed in the. Therefore, when the height position of the filter structure disposed at the upper end of the permeation cylinder is too low compared to the drain outlet of the drain pipe 4, by using the filter structure using the intermediate frame, The height position of the upper surface of the filter structure can be increased and optimized.
In addition, when the height position of the filter structure disposed at the upper end of the permeation cylinder is too high compared with the drainage port of the drain pipe 4, the height position of the upper surface of the filter structure is changed except for the intermediate frame. It can also be lowered and optimized and used as the same filter structure shown in FIG.
Thus, the height position of the filter structure can be adjusted to an appropriate position with respect to the drain outlet of the drain pipe 4 by inserting or not inserting the intermediate frame.

  Also in the present invention, a rainwater passage portion 25 through which a plurality of rainwater circulates is provided on the side wall portions of the upper frame body and the intermediate frame body (see FIG. 8) and, as already described, stays in the rainwater tank. Rain water level can be lowered.

The filter structure 10 of the present invention shown in FIG. 3 is obtained by replacing the two frame bodies 29 and 30 with the filter housing unit 28 having the filter housing portion with the openings facing each other. It is arranged on the upper frame 11 of the structure.
Here, the frame bodies 29 and 30 constituting the unit have the same outer diameter of the collar portion, the width of the collar portion, and the diameter (outer diameter and inner diameter) of the frame main body as those of the upper frame body 11. Similar to the body, a column having a rainwater passage hole in the ceiling of the frame body and a bolt hole in the center of the frame is formed. The height of the frames 29 and 30 may be the same as or different from the height of the upper frame 11.
And this filter structure inserts the bolt 22 which latched the hook metal fitting 21 at the upper end into the bolt hole of the said unit 28, the upper frame 11, and the lower frame 12, and is bolted under the support | pillar of a lower frame. These frame bodies are fixed by tightening the tip of the frame with a nut 23.

In this filter structure as well, as shown in FIGS. 1 and 2, the rainwater inflow area is larger in the frames of the upper frame body 11 and the filter housing unit 28 than in the filter housed in the lower frame body. A large filter can be stored, and clogging of the filter can be reduced. As a result, the water passing function of the filter structure can be maintained in a good state for a longer time.
In addition, since the filter housing unit is disposed on the upper frame, the height of the filter structure disposed at the upper end of the permeation cylinder 8 is also increased by the height of the filter housing unit in this invention. Can be adjusted.
Therefore, when the height position of the filter structure disposed at the upper end of the permeation cylinder is too low as compared with the drain outlet of the drain pipe 4, the above-described filter housing unit is disposed to The height position can be increased and optimized.
When the height position of the filter structure of the present invention disposed at the upper end of the permeation cylinder is too high compared to the drainage port of the drain pipe 4, the height position of the upper surface of the filter structure except for the filter housing unit It is also possible to lower the value and use it properly.
As described above, the height position of the filter structure can be adjusted to an appropriate position with respect to the drain outlet of the drain pipe 4 by arranging or not arranging the filter housing unit.

  In the present invention, the frame bodies 29 and 30 of the unit are the same as the upper frame body 11 because the outer diameter of the collar portion, the width of the collar portion, and the diameter (outer diameter and inner diameter) of the frame body are the same. Can be used for the frame of the unit, and the frame of the unit can be used for the upper frame or the other frame of the unit.

  In FIG. 3, one filter housing unit 28 is arranged, but a plurality of filter housing units 28, 28... Can be arranged on the upper frame. FIG. 5 shows a configuration in which three filter housing units 28 are arranged on the upper frame 11. Therefore, in this invention, compared with what is shown in FIG. 3, the upper surface height of the filter structure arrange | positioned at the upper end of the osmosis | permeation pipe | tube can be made still higher.

  As for the upper frame of the present invention and the frame of the filter housing unit disposed on the upper frame, the peripheral and brim surfaces on the back of the main body of the two frames that are in contact with each other are shown in FIG. 1 and FIG. Similarly to the above, a convex portion and a concave portion that fit into each other may be formed. In this way, both installations can be performed stably.

  Also in this filter structure, a rainwater passage part is provided on the side wall of the filter housing unit other than the lower frame and the upper frame, so that the level of rainwater staying at the bottom of the rainwater basin (the muddy part) is lowered. Can do.

The filter structure of the present invention shown in FIG. 4 is similar to the filter structure shown in FIG. 3 in that two frame bodies 29 and 30 are connected to a filter housing unit 28 having a filter housing portion with their openings facing each other. This is arranged on the upper frame 11 of the filter structure shown in FIG.
Here again, the frame bodies 29 and 30 constituting the unit have the same outer diameter of the collar portion, the width of the collar portion, the diameter of the frame body (outer diameter and inner diameter) as the upper frame body 11 (intermediate frame body), Similar to the upper frame and the lower frame, a column having a rainwater passage hole in the ceiling of the frame body and a bolt hole in the center of the frame is formed. The height of the frames 29 and 30 may be the same as or different from the height of the upper frame 11.
And this filter structure inserts the bolt 22 which latched the hook metal fitting 21 at the upper end into the bolt hole of the said unit 28, the upper frame 11, the intermediate | middle part frame, and the lower frame 12, and the lower frame of These frame bodies are fixed by tightening the ends of the bolts with nuts 23 under the columns.

Similarly to the filter structure shown in FIG. 3, this filter structure also has a rainwater inflow area in the frame of the upper frame, the intermediate frame, and the filter storage unit than the filter stored in the lower frame. A large filter can be stored, and clogging of the filter can be reduced. As a result, the water passing function of the filter structure can be maintained in a good state for a longer time.
In addition, since the filter housing unit is disposed on the upper frame as in the case shown in FIG. 3, in this invention, the permeation cylinder is provided by the height of the intermediate frame and the filter housing unit. 8 The height of the filter structure disposed at the upper end can be increased.

Therefore, when the height position of the filter structure disposed at the upper end of the permeation cylinder is too low as compared with the drain outlet of the drain pipe 4, the above-described filter housing unit is disposed to The height position can be increased and optimized.
When the height position of the filter structure of the present invention arranged at the upper end of the permeation cylinder is too high compared with the drainage port of the drain pipe 4, the filter structure unit is removed except for the filter housing unit and the intermediate frame. The height position of the upper surface can be lowered and optimized.
In this manner, the height position of the filter structure can be adjusted to an appropriate position with respect to the drain outlet of the drain pipe 4 by the arrangement and non-arrangement of the filter housing unit and the insertion and non-insertion of the intermediate frame.

In FIG. 4, one filter housing unit 28 is disposed, but a plurality of filter housing units 28 may be disposed on the upper frame 11.
Therefore, in the present invention, the upper surface height of the filter structure disposed at the upper end of the permeation tube can be adjusted higher than that shown in FIG.

  As for the upper frame of the present invention and the frame of the filter housing unit disposed on the upper frame, the peripheral edge and the collar on the back of the main body of the two frames that are in contact with each other are shown in FIG. 1 and FIG. Similarly to the above, a convex portion and a concave portion that fit into each other may be formed. In this way, both installations can be performed stably.

  Also in this invention, it is possible to provide a rainwater passage portion on the side wall of the frame body of the filter housing unit other than the lower frame body, the upper frame body, and the intermediate frame body, and to reduce the level of rainwater staying in the rainwater tank. .

In addition, the filter structure shown in FIGS. 1 to 5 shows a filter structure in which the depth of the lower frame is larger than the depth of the frame of the upper frame, the intermediate frame, and the filter housing unit. Yes. In order to stably attach the lower frame to the permeation cylinder, a certain depth is required. In the present invention, the height of the frame other than the lower frame is higher than the height of the lower frame. It is not limited to small ones.
Moreover, the width | variety of the collar part other than the said lower frame can be made narrow as long as it can be made to contact the collar part of a lower frame or another frame stably.

Next, the rainwater infiltration trough and the rainwater infiltration structure according to the present invention will be described with reference to FIGS.
As shown in FIG. 10, the rainwater infiltration trough 1 of the present invention has the filter structure of the present invention already described at the upper end of the infiltration cylinder 8 provided at the opening of the through hole 7 formed in the bottom wall 6 of the rainwater trough. A body 10 is arranged. Here, the type having the intermediate frame shown in FIG. 2 is shown, but any type of filter structure 10 shown in FIG. 1 or FIGS.
The rainwater from which dust and sand have been removed by the filter of the filter structure flows into the infiltration portion 33 provided below the rainwater infiltration tub 1.
For the infiltration cylinder 8, as shown in FIG. 10, even if the lower end of the infiltration cylinder 8 extends to the infiltration portion 33 below the through hole in the bottom wall of the rainwater tank, or as in the conventional example shown in FIG. It does not matter if the lower end of the cylinder 8 does not reach the permeation part 33 arranged below the through hole 7 of the rainwater trough bottom wall 6.

The rainwater infiltration structure is composed of a rainwater infiltration tank having a filter structure at the upper end of the infiltration cylinder, and an infiltration part formed in the ground below the opening of the rainwater tank bottom wall of the rainwater tank.
The rainwater infiltration tank of the present invention is provided with the filter structure 10 of the present invention at the upper end of the infiltration cylinder 8. The filter structure of the present invention has already been described.
The conventional infiltration portion 33 shown in FIG. 12 is usually provided in a hole formed in the ground below the opening of the through hole 7 of the rainwater tank, and a number of crushed stones filled in the hole. 35 and a bag-like water-permeable sheet 34 storing the same. Further, the lower end of the infiltration cylinder 8 does not reach the infiltration portion in the ground.

On the other hand, in the infiltration part of the rainwater infiltration structure according to the present invention, as shown in FIG. 10, the infiltration cylinder 8 passes through the opening of the bottom wall 6 of the rainwater tank and extends into the ground below the opening. . A plurality of rainwater permeation holes 36 are formed in a tubular wall of a portion of the permeation cylinder in the ground, and the same portion is accommodated in a bag-like water-permeable sheet 34. Is stored, the permeation part 33 is configured.
The zeolite 35 may be stored only in a portion of the above-described permeation tube in the ground, or may be stored not only in the same portion but also in a portion of the permeation tube in the rainwater tank.
In order to stably install the permeation cylinder 8, the diameter of the through hole in the bottom wall of the rainwater hole is made larger than the diameter of the permeation cylinder, and the gap between the permeation cylinder and the through hole 7 is filled with mortar 37. It may be hardened.

As already described, when the rainwater passage part 25 into which rainwater flows is formed in the side wall part of the frame body other than the lower frame body of the filter structure 10, the rainwater is also introduced into the permeation cylinder from the circulation part 25. Therefore, the water level of the rainwater staying in the rainwater basin can be lowered.
Moreover, this water level can be further lowered by lowering the height of the permeation cylinder provided at the opening of the rainwater tank bottom wall from the rainwater tank bottom wall. In the structure shown in FIG. 11, a rainwater passage 25 is provided on the side walls of the upper frame 11 and the intermediate frame 26, and the upper end of the permeation cylinder 8 is made not to protrude beyond the upper surface of the bottom wall 6 of the rainwater tank. Since the height of the bottom wall 6 is almost the same as that of the bottom wall 6, the water level of the rainwater collected at the bottom portion (sudden portion) 5 of the rainwater canal can be made almost zero.

The reason why zeolite, not ordinary crushed stone, was accommodated in the infiltration cylinder of the infiltration structure of the present invention is as follows.
The rainwater flowing into the rainwater infiltration basin contains heavy metals such as lead and zinc generated from automobiles and automobile tires traveling on the road. Some heavy metals are harmful to the human body, and the above conventional rainwater infiltration facilities have not been considered to remove such harmful substances.
Therefore, in order to remove such harmful substances, the infiltration cylinder in the rainwater infiltration structure of the present invention was filled with zeolite ore instead of the above-mentioned general crushed stone.
Zeolite can adsorb heavy metal ions such as Pb and Zn and cesium ions in rainwater to remove harmful metals and the like from rainwater.
In addition, you may use an artificial zeolite as a zeolite.

  In the rainwater infiltration structure of the present invention, the infiltration cylinder 8 is extended to the ground, so that the formation (ground mountain) around the infiltration cylinder in the ground is prevented from collapsing, and the sediment of the formation is transferred to the infiltration portion. It is possible to prevent entry or ground subsidence.

It is preferable to use a high-strength material excellent in corrosion resistance, such as a pipe made of polyvinyl chloride, for the permeation cylinder.
The water-permeable sheet preferably has sufficient strength and corrosion resistance and can withstand long-term use, and a polyester nonwoven fabric or the like is used.

The zeolite 35 can also be stored in the permeation tube in a state of being wrapped in a bag-like net. In this way, the zeolite can be easily recovered and exchanged.
The zeolite in the infiltration cylinder is preferably one having an appropriate gap in order to infiltrate rainwater.
The zeolite may be a single particle having a uniform particle size. Moreover, when it accommodates in an osmosis | permeation pipe | tube, it is preferable to fill the zeolite with a comparatively small particle size with the zeolite with a comparatively small particle size in the upper part on the upper part.

  In the infiltration part 33 of the rainwater infiltration structure according to the present invention, the rainwater flowing into the infiltration cylinder 8 after passing through the rainwater tank filter structure 10 is freed of harmful substances such as heavy metals and cesium by the adsorption action of the zeolite 35. Then, it flows out from the rainwater penetration hole 36 of the seepage cylinder, passes through the water permeable sheet 34 and penetrates into the ground.

  In this way, the infiltration structure of the present invention removes dirt, gravel, etc. by the filter at the top of the infiltration cylinder, and further infiltrates rainwater from which harmful heavy metals etc. are removed by zeolite in the infiltration cylinder, so that the soil Pollution and groundwater contamination can be prevented.

1: Rainwater permeation 2: Rainwater persimmon
3: Rainwater cover 4: Drain pipe
5: Bottom of rainwater tank 6: Bottom wall of rainwater tank
7: Through hole 8: Penetration cylinder
9: Crushed stone floating prevention member 10: Filter structure
11: Upper frame 12: Lower frame
13: collar part of upper frame 14: collar part of lower frame
15: Strut of frame body 16: Bolt hole of frame body
17: Rib 18: Rainwater passage hole
19: Convex part 20: Concave part
21: Hanging bracket 22: Bolt
23: Nut 24: Filter
25: Rainwater passing part 26: Intermediate part frame 27: Collar part of intermediate part frame 28: Filter housing unit
29: One frame constituting the unit 30: The other frame constituting the unit 31: A collar part of one frame constituting the unit 32: A collar part 33 of the other frame constituting the unit 33: Permeation part 34: Water-permeable sheet
35: Crushed stone, zeolite 36: Rainwater penetration hole
37: Mortar

Claims (7)

  Each of them is a hat shape, and the upper frame body having a rainwater passage hole in the main body ceiling part and the opening part of the lower frame body are opposed to each other so that the collar parts of both are brought into contact with each other, so that the filter storage parts are placed in both frame bodies. In addition, a pillar having a bolt hole is formed at the center of each frame body, and a bolt with a hook fitting locked at the upper end is inserted into the bolt holes of the upper frame body and the lower frame body, A filter structure for rainwater seepage dredging with nuts bolted under the pillar, and the lower frame has the same outer diameter of the collar as the outer diameter of the upper frame. A rainwater infiltration filter structure, wherein the width of the upper frame body is larger than the width of the collar portion of the upper frame body, and the diameter of the upper frame body is larger than the diameter of the lower frame body.   Each of them has a hat shape and has an upper frame body, an intermediate frame body, and a lower frame body that have rainwater passage holes in the main body ceiling portion, and both the opening portions of the upper frame body and the intermediate frame body are opposed to each other. The first filter storage portion is configured in both the frames by contacting the flange portions of the lower frame, and the lower frame has its opening directed toward the back of the intermediate frame and the flange portions of the intermediate frame. The second filter housing portion is formed in the lower frame body by contacting the back surface of the main body, and a column having a bolt hole in the center portion of each frame body is formed, and the hook metal fitting is locked to the upper end. Is inserted into the bolt holes of the upper frame, the intermediate frame and the lower frame, and the filter structure for a rainwater infiltrating rod with the bolt end tightened under the pillar of the lower frame, the intermediate frame Increase the outer diameter of the collar, the width of the collar, and the diameter of the frame body. The lower frame has the same outer diameter as the collar of the upper frame (intermediate frame) and the width of the upper frame (intermediate frame). The structure of the filter body for rainwater seepage dredging, characterized in that the diameter of the upper frame (intermediate frame) main body is larger than the diameter of the lower frame main body. .   On top of the upper frame, the two frames having the same outer diameter, the width of the collar and the diameter of the collar body as the upper frame and the diameter of the frame body are opposed to each other so that the two collars are brought into contact with each other. At least one filter housing unit comprising a filter housing portion is arranged in both frame bodies, and bolts with hooks attached to the upper end are inserted into the bolt holes of the unit, upper frame body and lower frame body. The filter structure for a rainwater infiltration rod according to claim 1, wherein the bolt end is tightened with a nut under the support of the lower frame.   On top of the upper frame, the two frames having the same outer diameter, the width of the collar and the diameter of the collar body as the upper frame and the diameter of the frame body are opposed to each other with the flanges in contact with each other. And at least one filter housing unit constituting a filter housing portion in both frames, and the bolts are inserted through the bolt holes of the unit, the upper frame, the intermediate frame, and the lower frame, The filter structure for a rainwater infiltration tank according to claim 2, wherein a bolt end is tightened with a nut under a support of the frame.   The rainwater permeation filter structure according to any one of claims 1 to 4, wherein a rainwater passage part into which a plurality of rainwater flows is provided in a main body side wall part of a frame body other than the lower frame body. .   A rainwater infiltration trough comprising the filter structure according to any one of claims 1 to 5 at an upper end of an infiltration cylinder provided at an opening of a rainwater trough bottom wall.   A rainwater infiltration structure comprising the rainwater infiltration basin according to claim 6 and an infiltration portion provided under a bottom wall opening of the rainwater infiltration basin, wherein the lower end of the infiltration cylinder is an opening in the rainwater infiltration bottom wall And extending into the ground below, forming a plurality of rainwater permeation holes in a tubular wall of a portion of the permeation tube in the ground, and storing the same portion in a bag-like water-permeable sheet, A rainwater infiltration structure characterized in that an infiltration portion is formed by containing zeolite inside.

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