JP5283273B2 - Osmosis filter structure - Google Patents

Description

  The present invention relates to a permeation filter structure for a rainwater storage and permeation facility such as a permeation manhole, a permeation box culvert, a permeation trough, and a permeation trench tube that stores rainwater and permeates the ground.

  Conventionally, in osmosis manholes and the like, a osmosis filter consisting of a mat element is installed in a through hole for infiltrating rainwater into the ground provided on the bottom plate or side wall, and solid matter such as dust and earth and sand contained in rainwater drainage with the osmosis filter. It is common to remove rainwater and infiltrate rainwater into the surrounding ground.

  On the other hand, Patent Documents 1 and 2 show a part of the drain pipe formed of a T-shaped pipe.

Japanese Patent Laid-Open No. 06-126290 Japanese Patent Laid-Open No. 08-013562

  However, in the above-described conventional example, among the solids in the rainwater drainage, those with a high specific gravity settle and deposit on the bottom plate. If solid matter accumulates on the upper surface of the bottom plate osmotic filter and clogging occurs in the bottom plate osmotic filter due to fine earth and sand, the osmotic ability is reduced, and therefore the slab filter for the bottom plate needs to be periodically replaced.

  In addition, rainwater drainage tends to flow at right angles to the surface of the permeation filter provided in the through hole in the bottom plate or side wall, and the permeation filter tends to be pulled in the same direction by the flow rate of rainwater. There was a problem of being easily clogged. Further, Patent Documents 1 and 2 do not describe the use of a T-shaped tube as a filter.

  The present invention solves the above-mentioned problems, and an object of the present invention is to provide an osmotic filter structure in which the osmotic filter is hardly clogged and the osmotic ability can be maintained for a long time.

  In order to achieve the above object, the first configuration of the osmotic filter structure according to the present invention is a osmotic filter structure of a stormwater storage and osmosis facility for storing rainwater and infiltrating the ground, wherein the stormwater storage and infiltration is stored. A first straight pipe inserted into a through-hole penetrating at least one of a bottom plate or a side wall of the facility, and the first straight pipe communicated with the first straight pipe at an intermediate portion in the axial direction; It has the 2nd straight pipe arrange | positioned so that the axial direction may cross | intersect with respect to this axial direction, and the permeation filter provided in the both ends of the said 2nd straight pipe, It is characterized by the above-mentioned.

  Moreover, the 2nd structure of the osmosis | permeation filter structure which concerns on this invention is the said 1st structure, when the said 1st straight pipe is inserted by the through-hole penetrated by the bottom plate of the said rainwater storage penetration | infiltration facility. Is characterized in that the outer surface of the permeation filter is arranged in parallel with the direction of rainwater flowing through the rainwater storage and permeation facility.

  Moreover, the 3rd structure of the osmosis | permeation filter structure which concerns on this invention is a case where the said 1st straight pipe | tube is inserted in the through-hole penetrated by the side wall of the said rainwater storage infiltration facility in the said 1st structure. Is characterized in that the outer surface of the permeation filter is arranged substantially horizontally.

  According to the first configuration of the osmotic filter structure according to the present invention, the first straight pipe and the second straight pipe constitute a T-shaped tube, and the osmosis manhole, the osmosis box culvert, the osmosis tub, and the osmosis trench pipe When the first straight pipe of the T-shaped pipe is inserted into the through hole that penetrates the bottom plate of the rainwater storage and permeation facility such as, the outer surface of the permeation filter is disposed in a substantially vertical direction, Since it is parallel to the direction of the rainwater flow toward the hole, the outer surface of the osmotic filter is washed by the rainwater flow, and clogging is eliminated. In addition, since the permeation filter is arranged at a position higher than the bottom plate by the height of the first straight pipe, the solid matter deposited on the bottom plate is prevented from entering the permeation filter, and the permeation capacity is increased for a long time. Can be maintained.

  In addition, when the first straight pipe of the T-shaped tube is inserted into the through hole that is penetrated through the side wall of the rainwater storage and infiltration facility, the flow direction of the rainwater is directed to the outer surface of the infiltration filter toward the through hole. The outer surface of the osmotic filter is washed by the flow of rainwater and clogging is eliminated.

  Moreover, according to the 2nd structure of the osmotic filter structure which concerns on this invention, the 1st straight pipe is inserted by the through-hole penetrated by the bottom plate of the rainwater storage penetration facility, and the outer surface of the osmosis filter is made rainwater storage penetration The arrangement of the rainwater flowing in the facility in parallel with the flow direction of the rainwater cleans the outer surface of the permeation filter by the flow of rainwater, thereby eliminating clogging.

  Moreover, according to the 3rd structure of the osmotic filter structure which concerns on this invention, a 1st straight pipe is inserted by the through-hole penetrated by the side wall of the rainwater storage osmosis | permeation facility, and the outer surface of the osmosis filter is made substantially horizontal. By arranging, the outer surface of the osmotic filter is washed by the rising force of water when the level of rainwater stored in the stormwater storage and infiltration facility fluctuates up and down, and clogging is eliminated.

(A) is sectional drawing of aa of (c), and is sectional explanatory drawing which shows the structure of 1st Embodiment of the osmosis manhole provided with the osmosis filter structure based on this invention, (b) is b of (c). It is -b sectional drawing, (c) is a plane explanatory view showing composition of a 1st embodiment of a penetration manhole provided with a penetration filter structure concerning the present invention. (A) is a sectional view taken along the line aa of (b), and is a cross-sectional explanatory view showing the configuration of the second embodiment of the osmosis manhole having the osmotic filter structure according to the present invention, and (b) is the osmosis according to the present invention. It is plane explanatory drawing which shows the structure of 2nd Embodiment of the osmosis | permeation manhole provided with the filter structure. (A) is sectional drawing of aa of (c), and is sectional explanatory drawing which shows the structure of 3rd Embodiment of the osmosis manhole provided with the osmosis filter structure based on this invention, (b) is b of (c). It is a fragmentary sectional view of a section, and a section explanatory view in a portion of a T-shaped tube which constitutes an osmosis filter structure, (c) is the composition of a 3rd embodiment of an osmosis manhole provided with an osmosis filter structure concerning the present invention. FIG. It is a section explanatory view showing the composition of a 4th embodiment of the penetration manhole provided with the penetration filter structure concerning the present invention. (A), (b) is sectional description which shows the structure of 5th Embodiment of the osmosis | permeation manhole provided with the osmosis | permeation filter structure based on this invention at the time of arrange | positioning two or more T-shaped pipe | tube which has an osmosis filter structure in parallel in the bottom plate It is a figure and a plane explanatory view.

  As an example of the osmotic filter structure according to the present invention, an embodiment of an osmotic filter structure attached to a through-hole provided in a side wall or a bottom plate of an osmotic manhole will be described in detail.

  First, the structure of 1st Embodiment of the osmosis | permeation manhole provided with the osmosis filter structure based on this invention is demonstrated using FIG. In FIG. 1, reference numeral 1 denotes an infiltration manhole that is an example of a rainwater storage and infiltration facility that stores rainwater and infiltrates the ground 2. After the ground 2 is cut and a permeable sheet 3 is laid, a single grain size is formed on the permeable sheet 3. The crushed stone 4 is laid, and the bottom plate 5 of the assembly type manhole is placed on the single-grain crushed stone 4. The water permeable sheet 3 prevents the earth and sand from the ground 2 from flowing into the single-grain crushed stone 4.

  A through hole 5a leading to the single-grain crushed stone 4 is formed in a substantially central portion of the bottom plate 5, and the first straight pipe 6a of the T-shaped tube 6 having an osmotic filter structure is formed in the through hole 5a such as an O-ring. It is inserted through a seal member.

  The second straight pipe 6b of the T-shaped pipe 6 communicates with the first straight pipe 6a at its axial intermediate portion, and the axial direction intersects the axial direction of the first straight pipe 6a. Be placed. By protecting the upper part of the second straight pipe 6b with a steel plate or the like, it is possible to prevent the upper part from being damaged by the fall of stones or the like contained in rainwater from the upper part.

  As shown in FIG. 1 (c), when the first straight pipe 6 a of the T-shaped pipe 6 is inserted into the through hole 5 a that penetrates the bottom plate 5 of the penetrating manhole 1, the second straight pipe The outer surface 7a of the permeation filter 7 provided at both ends of 6b is arranged in parallel with the flow direction f of rainwater flowing in the permeation manhole 1.

  A straight wall pipe 8 is placed on the top of the bottom plate 5, and a drain pipe 11 is connected to the straight wall pipe 8.

  If the first straight pipe 6a of the T-shaped tube 6 is inserted into the through hole 5a via a sealing member such as an O-ring, the T-shaped tube 6 having a permeation filter structure can be attached and detached. The T-shaped tube 6 can be removed from the bottom plate 5 at the time of maintenance and can be easily replaced or maintained.

  Further, after the first straight pipe 6a of the T-shaped tube 6 is fitted into the through hole 5a, it can be fixed with concrete or mortar, and both ends of the second straight pipe 6b of the T-shaped tube 6 can be fixed. By making the osmotic filter 7 provided in the section detachable, the osmotic filter 7 can be removed from the second straight pipe 6b at the time of maintenance and can be easily replaced or maintained. The permeation filter 7 accommodates a water-permeable mat element in a filter frame provided with a permeation hole, and can be replaced or maintained by removing the filter frame and taking out the mat element.

  A slant wall tube 10 is placed on the top of the straight wall tube 8, and an adjustment ring 12, a height adjustment mortar 13, a manhole cover and a manhole cover receiving ring 14 are provided on the top of the slant wall tube 10.

  In the present embodiment, an example in which an osmotic filter structure including a T-shaped tube 6 is applied to the osmosis manhole 1 as an example of a storm water storage and osmosis facility for storing rainwater has been described. As an example, the first straight pipe 6a of the T-shaped pipe 6 is inserted into a through-hole penetrating a bottom plate (or bottom part) such as a permeation box culvert, a permeation trough, and a permeation trench pipe that stores rainwater and permeates the ground. It is also possible to configure as an osmotic filter structure in which is inserted.

  According to the above configuration, the first straight pipe 6a and the second straight pipe 6b constitute the T-shaped pipe 6, and rainwater storage and penetration facilities such as the permeation manhole 1, the permeation box culvert, the permeation trough, and the permeation trench pipe When the first straight tube 6a of the T-shaped tube 6 is inserted into the through hole 5a that penetrates the bottom plate 5 (or the bottom portion), the outer surface 7a of the permeation filter 7 is arranged in a substantially vertical direction. Since it is parallel to the direction of rainwater flow toward the through hole 5a (from the top to the bottom of FIGS. 1A and 1B), the flow rate of rainwater passing through the permeation filter 7 can be reduced. The outer surface 7a of the permeation filter 7 is washed by the flow of rainwater, and clogging is eliminated. Further, since the permeation filter 7 is disposed at a position higher than the bottom plate 5 by the height of the first straight pipe 6a, the solid matter 15 deposited on the bottom plate 5 is prevented from entering the permeation filter 7. Penetration capacity can be maintained over the long term.

  Further, the first straight pipe 6a is fitted into a through hole 5a penetrating the bottom plate 5 of the rainwater storage and penetration facility, and the outer surface 7a of the permeation filter 7 is parallel to the flow direction f of rainwater flowing through the rainwater storage and penetration facility. The outer surface 7a of the osmotic filter 7 is washed by the rainwater flow, and clogging is eliminated.

  Further, since the osmosis filter 7 is provided at both ends of the second straight pipe 6b, a large filter area can be secured, the water passage capacity is increased, the osmosis capacity is increased, and the maintenance period of the osmosis filter 7 can be extended. Become.

  Next, the structure of 2nd Embodiment of the osmosis | permeation manhole provided with the osmosis | permeation filter structure based on this invention is demonstrated using FIG. In addition, what was comprised similarly to the said 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits description. In FIG. 2, three steps of the straight wall pipe 8 are placed on the upper part of the bottom plate 5, and the through holes that lead to the single-grain crushed stone 4 are provided at the positions where the side walls of the lower two stages of the straight wall pipe 8 avoid step 9. 8a is formed, and the first straight pipe 6a of the T-shaped pipe 6 having a permeation filter structure is fitted into the through hole 8a via a seal member such as an O-ring. The single-grain crushed stone 4 and the water-permeable sheet 3 that serve as an infiltration facility are not provided around the uppermost straight wall pipe 8, and a drain pipe 11 is connected to the straight wall pipe 8. A permeation filter 7 is inserted into the through hole 5 a of the bottom plate 5.

  As shown in FIG. 2 (a), when the first straight pipe 6 a of the T-shaped pipe 6 is inserted into the through hole 8 a that penetrates the side wall of the straight wall pipe 8 of the permeation manhole 1, The outer surface 7a of the filter 7 is arranged substantially horizontally. The outer surface 7 a of the osmosis filter 7 is preferably disposed at a position lower than the highest water level WL stored in the osmosis manhole 1.

  If the first straight pipe 6a of the T-shaped tube 6 is inserted into the through hole 8a via a sealing member such as an O-ring, the T-shaped tube 6 having the permeation filter structure can be attached and detached. The T-shaped tube 6 can be removed from the side wall of the straight wall tube 8 during maintenance to facilitate replacement or maintenance.

  Further, after inserting the first straight pipe 6a of the T-shaped tube 6 into the through hole 8a, it can be fixed with concrete or mortar, and both ends of the second straight pipe 6b of the T-shaped tube 6 can be fixed. By making the osmotic filter 7 provided in the section detachable, the osmotic filter 7 can be removed from the second straight pipe 6b at the time of maintenance and can be easily replaced or maintained. The permeation filter 7 accommodates a water-permeable mat element in a filter frame provided with a permeation hole, and can be replaced or maintained by removing the filter frame and taking out the mat element.

  In the present embodiment, an example in which an osmotic filter structure including a T-shaped tube 6 is applied to the osmosis manhole 1 as an example of a storm water storage and osmosis facility for storing rainwater has been described. As an example, the first straight pipe of the T-shaped pipe 6 is inserted into a through-hole penetrating a side wall (or side part) such as a permeation box culvert, a permeation trough, and a permeation trench pipe that stores rainwater and permeates the ground. It can also be configured as a permeation filter structure in which 6a is inserted.

  In addition, when the first straight pipe 6a of the T-shaped tube 6 is fitted into the through hole 8a that is penetrated through the side wall of the rainwater storage and penetration facility, the outer surface 7a of the permeation filter 7 is connected to the through hole 8a. Since it is parallel to the rainwater flow direction f, the outer surface 7a of the permeation filter 7 is washed by the rainwater flow, and clogging is eliminated.

  In addition, the first straight pipe 6a is inserted into a through hole 8a that is penetrated through the side wall of the rainwater storage and penetration facility, and the outer surface 7a of the permeation filter 7 is disposed substantially horizontally so that the rainwater storage and penetration facility is stored in the rainwater storage and penetration facility. The outer surface 7a of the osmotic filter 7 is washed by the rising force of the water when the rainwater level WL changes up and down, and clogging is eliminated. Other configurations are the same as those in the first embodiment, and the same effects can be obtained.

  In the third embodiment shown in FIG. 3, the first straight tube 6a of the T-shaped tube 6 is fitted into the through hole 5a provided in the bottom plate 5 as in the first embodiment, and the second embodiment. In this way, the first straight pipe 6 a of the T-shaped pipe 6 is inserted into the through hole 8 a provided in the side wall of the straight wall pipe 8. With such a configuration, a large total area of the outer surface 7a of the permeation filter 7 can be secured, and a large amount of rainwater permeation can be secured. In other respects, the same effects as those of the first and second embodiments described above can be obtained.

  In the fourth embodiment shown in FIG. 4, in the third embodiment, a plurality of T-shaped tubes 6 having different heights of the first straight pipe 6 a are inserted into a plurality of through holes 5 a provided in the bottom plate 5. Is. As another embodiment, a plurality of second straight pipes 6b respectively connected to the upper end part and the intermediate part where the heights of the common first straight pipes 6a are different may be provided. By adopting such a configuration, it is possible to infiltrate rainwater from the permeation filter 7 of the T-shaped tube 6 having a low height into the surrounding ground 2 even when the water level WL is low as compared with the third embodiment. .

  5 (a) and 5 (b) are diagrams showing the configuration of the fifth embodiment when a plurality of T-shaped tubes 6 having a permeation filter structure are arranged in parallel on the bottom plate 5, in the case of FIG. 5 (a). In FIG. 5 (b), three through holes 5a are formed in the bottom plate 5 and the first straight pipes 6a of the three T-shaped tubes 6 are fitted in the respective through holes 5a. A large-diameter through hole 5a is formed in the bottom plate 5, and the first straight pipes 6a of the three T-shaped pipes 6 are inserted into one through hole 5a. The through holes 5a and the first straight pipes 6a The gap is fixed with concrete or mortar. Note that the number and arrangement position of the T-shaped tubes 6 provided on the side walls of the bottom plate 5 and the straight wall tube 8 are not necessarily limited to the above embodiments.

  As an application example of the present invention, the present invention can be applied to an infiltration filter structure of a rainwater storage and infiltration facility such as an infiltration manhole, an infiltration box culvert, an infiltration tank, and an infiltration trench tube for storing rainwater and infiltrating the ground.

f ... Rainwater flow direction WL ... Rainwater level 1 ... Permeation manhole 2 ... Ground 3 ... Permeable sheet 4 ... Single grain crushed stone 5 ... Bottom plate 5a ... Through hole 6 ... T-shaped tube 6a ... First straight pipe 6b ... First 2 straight pipe 7 ... Osmosis filter 7a ... Outer surface 8 ... Straight wall pipe 8a ... Through hole 9 ... Step
10… Slanted wall pipe
11… Drain pipe
12 ... Adjustment ring
13… Height adjustment mortar
14… Manhole cover and manhole receiving ring
15… Solid matter

Claims (3)

A osmotic filter structure of a rainwater storage and infiltration facility that stores rainwater and infiltrates the ground,
A first straight pipe that is inserted into a through hole that is penetrated by at least one of a bottom plate or a side wall of the rainwater storage and penetration facility in which rainwater is stored;
A second straight pipe communicated with the first straight pipe at an intermediate portion in the axial direction and arranged so that the axial direction intersects the axial direction of the first straight pipe;
An osmosis filter provided at both ends of the second straight pipe;
An osmotic filter structure characterized by comprising: When the first straight pipe is inserted into a through-hole penetrating the bottom plate of the rainwater storage and penetration facility, the outer surface of the permeation filter is parallel to the flow direction of rainwater flowing through the rainwater storage and penetration facility. The osmotic filter structure according to claim 1, wherein The outer surface of the permeation filter is disposed substantially horizontally when the first straight pipe is fitted into a through hole that is penetrated through a side wall of the rainwater storage and permeation facility. The described osmotic filter structure.

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