JP2006124990A - Rain water seepage pit and filter for rain water seepage pit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save labor for maintenance by extending intervals in which solid matters are removed from a filter for rain water seepage pint while a maintenance function for easily taking out an inner filter 12 is utilized since rain water efficiently flows from the inner filter 12 to an outer filter 14 and the solid matters are accumulated not only in the inner filter 12 but also between the inner filter 12 and the outer filter 14. <P>SOLUTION: This filter 10 for the rain water seepage pit is formed by stacking the inner filter 12 in the outer filter 14. The height of the inner filter 12 is lower than the height of the outer filter 14, and a clearance is formed between the upper end of the inner filter 12 and the upper end of the outer filter 14. The solid matters contained in the rain water is removed first by the inner filter 12. Then, when the inside of the inner filter 12 is filled with the solid matters, the rain water flows into the outer filter 14 through the clearance, namely, an overflow passage 34, and the solid matters are removed by the outer filter 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a filter for rainwater infiltration and rainwater infiltration, and more particularly, for example, not only does rainwater penetrate into the ground, but also has a function of removing debris such as fallen leaves and earth and sand from rainwater. Related to filters.

Non-patent document 1 discloses an example of a conventional rainwater infiltration mask and rainwater infiltration filter. In this non-patent document 1, the penetrating mast communicates with the mud pool, and a basket and a dust collecting bucket are attached to the mud pool. The rainwater containing the garbage first enters the mud pool and passes through the garbage bucket and basket. Garbage is mainly captured by the garbage bucket, and the rainwater from which the garbage has been removed flows into the permeate. For this reason, if the garbage collection bucket is clogged with dust, the penetration capacity of the penetration will decrease. Therefore, it is necessary to clean or check the garbage collection bucket periodically or after heavy rain.
Sewerage New Technology Promotion Organization “Sewer Rainwater Penetration Technology Manual-June 2001-” Structure of Section 4 “Penetration Masu, etc.”, Figure 4-7 Measures to prevent clogging (Example of mud accumulation) (79)

  In the prior art of Non-Patent Document 1, since garbage is removed from rainwater mainly by a small-sized garbage collection bucket that is independent of the car, the garbage collection bucket becomes full immediately and the eyes of the garbage collection bucket are clogged. Therefore, maintenance such as cleaning and inspection of the mud pool must be done frequently. In particular, during heavy rains such as typhoons and torrential rains, it is necessary to perform cleaning and inspection more frequently.

  Therefore, a main object of the present invention is to provide a rainwater permeation filter and a rainwater permeation filter for saving labor for maintenance.

  The invention according to claim 1 is a rainwater infiltration filter in which at least one inner filter is stacked in an outer filter, and an overflow passage to the outer filter is formed in the upper part of the inner filter. It is.

  In the first aspect of the invention, solid matters such as dust contained in the rainwater are removed by the inner filter, and the rainwater passes through the inner filter. Subsequently, the rainwater passes through the outer filter and flows into the rainwater infiltrate.

  When the solid matter accumulates in the inner filter, the rainwater flows into the outer filter together with the solid matter through the overflow passage of the inner filter. Therefore, as with the inner filter, dust is removed by the outer filter, and rainwater passes through the outer filter.

  In this way, when the amount of dust is small and dust is collected only in the inner filter, it is only necessary to take out the inner filter superimposed on the outer filter.

  Further, when the amount of dust is large and the inner filter is filled with dust, the dust contained in the rainwater is also removed by the outer filter by the overflow flow path provided in the inner filter, so that the dust removal capacity increases.

  This makes it possible to extend the time it takes for the wastewater to penetrate into the rainwater infiltration filter while taking advantage of the maintenance function that allows the inner filter to be easily removed. Work intervals can be extended, leading to labor savings in maintenance.

  The invention according to claim 2 is the rainwater infiltration filter according to claim 1, wherein the size of the hole of the outer filter is smaller than the size of the hole of the inner filter.

  According to the second aspect of the present invention, the flow path is secured while removing a certain amount of fixed objects by the inner filter, and even small fixed objects are removed by the outer filter.

  According to a third aspect of the present invention, there is provided a rainwater-permeating apparatus provided with the rainwater-permeating filter according to the first or second aspect.

  The invention of claim 3 exhibits the same action as that of the invention of claim 1 or 2.

According to the present invention, by providing an overflow passage in the inner filter, it is possible to save labor in maintaining rainwater infiltration. The above object, other objects, features, and advantages of the present invention will be described with reference to the drawings. It will become more apparent from the detailed description of the following examples.

  A rainwater infiltration filter 10 according to an embodiment of the present invention shown in FIG. 1 includes an inner filter 12 and an outer filter 14, and these are stacked and mounted in a rainwater infiltration tank 16. For example, when the rainwater penetration mast 16 is connected to the dust removal mast 18 and the rainwater permeation mast 20 via the connecting pipe 22 and the perforated tube 24 is connected to the rainwater permeation mast 20, the rainwater permeation mast 16 is used. The filter 10 is provided in a dust removal depot 18.

  The inner filter 12 shown in FIG. 2 is, for example, a container having a bottom surface on a cylindrical side wall, and a large number of small holes 26 are provided on the side wall and the bottom surface. The hole 26 is formed by injection processing or by secondary processing on the side wall and bottom surface where the hole is not opened. A U-shaped handle 28 is attached to the upper end of the inner filter 12. The length F of the handle 28 is equal to the outer diameter Di of the inner filter 12 as shown in FIG.

  The outer filter 14 shown in FIG. 2 is a container provided with a bottom on a cylindrical side wall similar to the inner filter 12, and a large number of small holes 30 are formed on the side wall and the bottom surface. The size of the hole 30 is smaller than the size 26 of the hole of the inner filter 12.

  As shown in FIG. 3, since the inner diameter De of the outer filter 14 is larger than the outer diameter Di of the inner filter 12, the inner filter 12 enters the outer filter 14, and a gap (between the inner filter 12 and the outer filter 14 ( De-Di) is formed. The outer diameter Do of the outer filter 14 is smaller than the smaller one of the inner width W and the length L of the dust removing mast 18, and the outer filter 14 enters the dust removing mast 18, and the outer filter 14 and the dust are removed. A gap is formed between the removal mast 18.

  As shown in FIG. 1, since the height Hc of the outer filter 14 is larger than the height Hb of the inner filter 12, when the inner filter 12 is inserted into the outer filter 14, the upper end of the outer filter 14 and the upper end of the inner filter 12 are set. A gap (Hc-Hb) is formed between the two. This gap is used as an overflow channel 34 described later.

  Further, since the total height of the height Hb of the inner filter 12 and the height Hg of the handle 28 is larger than the height Hc of the outer filter 14, the handle 28 comes out from the upper end of the outer filter 14.

  The fixed plate 36 shown in FIG. 2 is plate-shaped, and a circular hole 38 is formed in the approximate center thereof. As shown in FIG. 3, since the diameter Dp of the hole 38 is smaller than the inner diameter De of the outer filter 14, as shown in FIG. 1, any attachment of adhesive, fasteners, etc. on the lower surface of the solid plate 36 outside the hole 38. The upper end of the outer filter 14 is attached by means, and the solid plate 36 and the outer filter 14 are joined. Also, as shown in FIG. 3, the diameter Dp of the hole 38 is slightly larger than the outer diameter Di of the inner filter 12 and the length F of the handle 28. Therefore, as shown in FIG. 12 and into the outer filter 14, the handle 28 fits into the hole 38 of the stationary plate 36. Since the gap between the hole 38 and the handle 28 is small, the handle 28 is also used as a guide for preventing the displacement of the inner filter 12.

  Further, as shown in FIG. 1, the height Hc of the outer filter 14 is substantially equal to the height from the bottom surface of the dust removal mast 18 to the step 18a provided on the side wall thereof, so that the solid plate 36 is attached. When the outer filter is placed in the dust removal basin 18, the solid plate 36 is caught by the step 18a, and the bottom surface of the outer filter 14 is in contact with the bottom surface of the dust removal basin.

  The inner filter 12 assembled in this way and the outer filter 14 to which the fixing plate 36 is attached are placed in the rain removal penetrable scum 18 to close the rain filter 18 lid 40.

  A hole 42 is opened in the lid 40 of the dust removal muffler. When it rains, rainwater flows into the dust removal mound 18 from the hole 42 of the lid 40 while containing solid matter such as fallen leaves and dust. To do. The rainwater containing the fixed material flows into the inner filter 12 through the hole 38 of the fixed plate 36. Solid matter of a certain size is removed by the inner filter 12, and solid matter and rainwater smaller than the holes 26 of the inner filter 12 pass through the inner filter 12. Subsequently, rainwater also passes through the outer filter 14, but small solids are removed by the outer filter 14. Then, the rainwater passes through the connecting pipe 22 and flows into the rainwater penetration 20 and permeates into the ground through, for example, the perforated pipe 24.

  When solid matter accumulates in the inner filter 12, rainwater cannot pass through the inner filter 12 and overflows from the upper end of the inner filter 12. Since the inner filter 12 is lower than the outer filter 14, the rainwater flows into the outer filter 14 through the overflow passage 34 provided on the inner filter 12 together with the solid matter. At this time, even when a large amount of rainwater flows into the debris removal device 18 at once, the upper end of the outer filter 14 is covered with the fixing plate 36, so that the solid matter overflows from the upper end of the outer filter 14 and becomes garbage. Without entering the removal trough 18, rainwater flows into the outer filter 14 through the overflow channel 34.

  When rainwater flows into the outer filter 14, like the inner filter 12, the solid matter is removed by the outer filter 14 and collected between the outer filter 14 and the inner filter 12. Then, the rainwater passes through the outer filter 14, passes through the connecting pipe 22 and flows into the rainwater infiltration gas 20 and permeates into the ground.

  In the maintenance and management of the rainwater infiltration mass 16, the lid 40 of the dust removal mast 18 is opened, the handle 28 of the inner filter 12 is taken out, and the inner filter 12 is taken out from the dust removal mast 18. At this time, when the state in the outer filter 14 is observed and solid matter does not appear to be contained, only the solid matter in the inner filter 12 is removed, and the inner filter 12 is returned to its original state. On the other hand, if solid matter is accumulated in the outer filter 14, the outer filter 14 is taken out by pulling up the fixing plate 36, and the solid matter in the outer filter 14 is removed. And if it removes, it will return in the waste removal waste 18 in order of the outer side filter 14 and the inner side filter 12.

  Thus, by providing the overflow flow path 34 in the inner filter 12, rainwater efficiently flows from the inner filter 12 to the outer filter 14. Since the solid matter contained in the rainwater is removed by the inner filter 12 and the outer filter 14, the solid matter can be stored not only in the inner filter 12 but also in the gap between the inner filter 12 and the outer filter 14. . For this reason, the time until the rainwater permeation filter 10 is filled with solid matter is extended, and the interval of the work for maintaining and managing the rainwater permeation mass 16 can be extended.

  Then, by attaching the bottom surface of the inner filter 12 to the bottom surface of the outer filter 14 and attaching the bottom surface of the outer filter 14 to the bottom surface of the inner filter 12, no extra space is created below the inner filter 12 and the outer filter 14, Since the inner filter 12 and the outer filter 14 are enlarged as much as possible, a large amount of solid matter is accumulated in the inner filter 12 and the outer filter 14, and the interval of the operation for maintaining the rainwater infiltration unit 16 is further extended.

  Further, since the handle 28 of the inner filter 12 is fixed by the hole of the fixing plate 36, the position of the inner filter 12 is not shifted, and the periphery of the inner filter 12 is covered with the fixing plate 36. First flows in. As a result, when the amount of solid matter flowing into the waste removal mass 18 is small, only the solid matter in the inner filter 12 has to be removed.

  If the handle 28 of the inner filter 12 is used, the inner filter 12 can be easily taken out from the debris removal device 18 and the rainwater permeation filter 16 can be easily maintained.

  Furthermore, by making the size of the hole 30 of the outer filter 14 smaller than the size of the hole 26 of the inner filter 12, a flow path is secured while removing the fixed material that is somewhat large by the inner filter 12, and the outer filter 14 is smaller. Even fixed objects can be removed.

  Although one inner filter 12 is provided in the outer filter 14, a plurality of inner filters 12 may be provided.

  Furthermore, the height Hc of the outer filter 14 is substantially equal to the height from the bottom surface of the dust removal mast 18 to the step 18a, but may be lower than the height from the bottom surface of the dust removal mast 18 to the step 18a. . In this case, when the outer filter is put in the dust removal basin 18 and the solid plate 36 is hooked on the step 18 a, a space is formed between the bottom surface of the outer filter 14 and the bottom surface of the dust removal basin 18.

  Legs can be attached to the bottom surface of the outer filter 14. The height of the rainwater permeation filter 10 is removed by attaching a leg having a length corresponding to the height of the waste removal mast 18 to the outer filter 14 or by removing the leg from the outer filter 14. It can be made to correspond to 18 heights.

  And the magnitude | size of the hole 30 of the upper part of the outer side filter 14 can be enlarged, and this hole 30 can also be used as an emergency response hole.

  A rainwater infiltration filter 10 according to another embodiment of the present invention shown in FIG. 5 is substantially the same as the rainwater infiltration filter 10 shown in FIG. 1, but the shape of the inner filter 44 is different. The other parts are the same as the rainwater infiltration filter 10 shown in the embodiment of FIG.

  The inner filter 44 shown in FIG. 6 is, for example, a container having a bottom surface on a cylindrical side wall, and a large number of small holes 26 are provided on the side wall and the bottom surface. A flange 46 is provided at the upper end, and a hole 48 larger than the hole 26 of the inner filter 44 is formed in the upper part of the side wall of the inner filter 44.

  As shown in FIG. 5, the outer diameter Di of the inner filter 44 is smaller than the inner diameter De of the outer filter 14, and the inner filter 44 enters the outer filter 14. The height Hj of the inner filter 44 is equal to or lower than the height Hc of the outer filter 14 plus the thickness Hp of the fixed plate 36. For this reason, when the inner filter 44 is inserted into the outer filter 14 to which the fixed plate 36 is attached, the flange 46 of the inner filter 44 is placed on the fixed plate 36. That is, there is no gap between the fixed plate 36 and the flange 46 of the inner filter 44.

  An outer filter having a solid plate 36 attached thereto is placed in a rainwater infiltration trough 16 for removing dust 18, and the solid plate 36 is hooked on a step 18 a provided on the side wall of the dust removing mast 18. The bottom of the abuts against the bottom of the debris removal. Next, the inner filter 44 is inserted into the outer filter 14 from the hole 38 of the fixing plate 36, and the lid 40 of the dust removal waste 18 is closed.

  The rainwater containing the solid material flows into the dust removing tub 18 from the hole 42 of the lid 40 and flows into the inner filter 44. Solid matter is removed by the inner filter 44, and rainwater passes through the inner filter 44 and the outer filter 14.

  When solid matter accumulates in the inner filter 44, it flows into the outer filter 14 through a large hole 48 provided in the upper portion of the inner filter 44, that is, an overflow flow path. In the outer filter 14, like the inner filter 44, solids are removed by the outer filter 14, and are collected between the outer filter 14 and the inner filter 44, and rainwater passes through the outer filter 14 and permeates. Penetrates into the ground.

It is sectional drawing which shows the state which attached the filter for rain water osmosis masu of one Example of this invention to the rain water osmosis | permeation masu. It is a perspective view which shows a fixed plate, an inner side filter, and an outer side filter. It is a top view of the upper surface which shows the state which put the filter for rainwater penetration masu in the rainwater masu. It is a perspective view which shows the state which formed the filter for rain water permeation | superposition through the fixing plate, the inner side filter, and the outer side filter. It is sectional drawing which shows the state which attached the filter for rainwater osmosis masu of the other Example of this invention to the rainwater masu. 5 is a perspective view showing an inner filter used for the rainwater infiltration filter of the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Filter for rain water penetration 12 ... Inner filter 14 ... Outer filter 16 ... Rain water penetration 26 ... Inner filter hole 30 ... Outer filter hole 34, 48 ... Overflow flow path

Claims (3)

A rainwater infiltration filter having at least one inner filter stacked in an outer filter,
A rainwater permeating filter in which an overflow flow path to the outer filter is formed on the inner filter.   The rainwater infiltration filter according to claim 1, wherein a size of a hole of the outer filter is smaller than a size of a hole of the inner filter.   Rainwater infiltration with the rainwater infiltration filter according to claim 1 or 2.

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