JP2006104851A - Stormwater separated catchment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stormwater separated catchment device capable of making the separation and elimination of fine-grains and, at the same time, having difficulty choking to raise collecting efficiency. <P>SOLUTION: A down-pipe drained below is provided to a rain gutter of a building, a collecting pit 9 extended in the lateral direction is provided to the down-pipe and, at the same time, in the stormwater separated catchment device providing a water storage tank storing rain water W flowing down through the collecting pit 9 from the down-pipe, the collecting pit 9 is equipped with an inner cylinder 21 communicated with the down-pipe, at the same time, extended in the lateral direction and provided with a filter section 20, and an outer cylinder 22 covering the inner cylinder 21 and, at the same time, a cylindrical collecting space 25 formed between the inner cylinder 21 and the outer cylinder 22 and communicated with the water storage tank. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rainwater separation and collection device for separating and removing dust in rainwater flowing from a vertical wall of a building and reusing rainwater.

  In recent years, effective use of rainwater that has fallen on the roofs of buildings has become widespread because of increased awareness of effective use of water resources and consideration for water shortages. This rainwater collection is performed by separating and removing dust in the rainwater by placing a water collector in the middle of the rainwater storage tank or the like from the vertical shaft.

  As a conventional water collector of this kind, an inverted conical (mortar-shaped) filtering member is arranged in the middle of the vertical gutter to remove dust from rainwater flowing in the vertical gutter and to be filtered by this filtration section. What stores rainwater (clean water) discharged from its surroundings into a rainwater reservoir in a water storage tank is known (see, for example, Patent Document 1).

Further, as another example of the water collector, a coarse screen is arranged by opening a part of the horizontal piping section formed in the vertical wall, and the rainwater filtered and collected from this coarse screen is U-shaped. What stores the clean water which stored from one upper part of the filtration tank and separated and removed the dust from the other upper part of the filtration tank via the fine screen in a water storage tank is known (for example, refer patent document 2). .
Japanese Patent Laid-Open No. 2002-70086 Utility Model Registration No. 3066431

  However, in a collector that separates and removes rainwater dust using an inverted conical filter member, fine particles cannot be separated and removed, and clogging occurs due to coarse dust accumulated in the filter member. Therefore, there was a problem that the water collection efficiency did not increase.

  In addition, in a water collector that collects clean water from a U-shaped filtration tank through a fine screen, coarse dust can be separated and removed. There was a problem that water collection efficiency did not increase because water was collected from a part of the piping.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a rainwater separation and collection device that can separate and remove fine particles and is highly resistant to clogging and has high water collection efficiency.

  This invention is made | formed in view of the above-mentioned situation, The invention of Claim 1 is provided with the vertical drain which drains from the rain gutter of a building, and rainwater which flows down through the water collection part from the vertical gutter In the rainwater separating and collecting apparatus provided with a water storage tank for storing water, the water collecting section includes an inner cylinder that communicates with the vertical shaft and extends in the lateral direction and has a filter section, and an outer cylinder that covers the inner cylinder. A cylindrical water collecting space formed between the inner cylinder and the outer cylinder and connected to the water collecting pipe connected to the water storage tank, and the downstream side portion is connected to the drain pipe. It is characterized by.

  The invention according to claim 2 is characterized in that the inner cylinder is a filter cylinder in which a wedge wire is wound and a slit having a predetermined width is formed.

  The invention according to claim 3 is characterized in that the inner peripheral surface of the wedge wire is positioned such that the upstream corner is higher than the downstream corner.

  The invention according to claim 4 is characterized in that the downstream side portion of the filter cylinder is closed with an impermeable portion.

  Further, the invention described in claim 5 is characterized in that the inner cylinder has a semi-cylindrical filter part on the lower side, at least the downstream side part is closed by a water-impermeable member.

  According to the first aspect of the present invention, the inner cylinder that communicates with the vertical shaft and extends in the lateral direction and has the filter portion and the outer cylinder that covers the inner cylinder are formed between the inner cylinder and the outer cylinder. And having a double-structured cylindrical water collecting space communicating with the water storage tank, the rain water dust is efficiently separated and removed by the inner cylinder to collect the rain water into the water collecting space to collect the rain water. Efficiency can be increased.

  According to the invention of claim 2, since the inner cylinder is a filter cylinder in which a wedge wire is wound to form a slit having a predetermined width, rain water (clean water) from which dust has been separated and removed can be efficiently collected. Can be water.

  Further, according to the invention of claim 3, since the inner peripheral surface of the wedge wire is positioned such that the upstream corner portion is higher than the downstream corner portion, the inner peripheral surface of each wedge wire is A stepped portion protruding inward at the downstream position can be formed. The rain water flowing on the inner peripheral surface of the wedge wire hits the step and changes the flow direction, so that the fine particles in the rain water soar, preventing clogging that clogs the fine particles in the opening of the wedge wire. In addition, the maintenance of the rainwater separation and collection device can be made almost unnecessary.

  According to the invention relating to claim 4, since the downstream side portion of the filter cylinder is closed by the impermeable portion, the clean water filtered by the inner cylinder and stored in the downstream side of the water collecting space is contained inside. Backflow into the inner cylinder through the cylinder can be prevented, and rainwater collection efficiency can be improved.

  According to the invention relating to claim 5, since the inner cylinder has a semi-cylindrical filter part closed at least on the downstream side on the lower side, it is possible to separate and remove rainwater dust with the semi-cylindrical filter part. At the same time, it is possible to prevent the clean water in the water collection space from flowing back into the inner cylinder and to improve the efficiency of collecting rainwater.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In FIG. 1, a rain gutter 3 is disposed in the vicinity of the lower part of the roof 2 of the building 1, and a vertical gutter 4 that receives and flows rain water W is connected to an appropriate position of the gutter 3. The downpipe 4 communicates with a sewage pipe 6 embedded in the ground 5 via a drain pipe 7 and constitutes a part of a rainwater separation and collection device 8 in the middle of the downpipe 4. A water collector 9 as a water collecting unit is provided.

  The water collector 9 is provided with a water collection pipe 10 for collecting clean water from which dust has been separated and removed, as will be described later. A water storage tank 11 buried in the underground 5 stores clean water Wa collected by the water collector 9 and has a manhole 12 extending to the ground GL. Reference numeral 12b denotes a manhole cover that closes an opening end of the manhole 12 to the ground GL so as to be opened and closed.

  The water collecting pipe 10 discharges clean water Wa to the manhole 12. Further, the clean water Wa in the water storage tank 11 is taken out to the outside through a filter 13 and a water intake pipe 14 through a pump (not shown).

  A rainwater separation / collection device 8 according to the present invention is composed of a vertical shaft 4, a water collector 9 disposed thereon, a water collection pipe 10, a water storage tank 11, and the like.

  FIG. 2A shows the shape of the vertical rod 4 in which the water collector 9 is disposed. That is, a V-shaped portion 18 formed by connecting the connecting pipe 15 and the horizontal pulling pipe 16 with the elbow 17 is formed in the middle of the vertical rod 4.

  The connecting pipe 15 is inclined toward the lower end, and the horizontal pulling pipe 16 is inclined in a direction opposite to the connecting pipe 15 and downward. The water collector 9 described above is disposed in the horizontal pulling pipe 16. In addition, the gradient θa of the water collector 9 is set to 0 ° to 30 °.

  FIG. 2B shows an example in which a V-shaped portion 18 is formed using a flexible hose 19 instead of the connecting pipe 15 in FIG.

  Next, the configuration of the water collector 9 will be described with reference to FIG.

  The water collector 9 communicates with the horizontal piping 16 of the vertical shaft 4 and has an inner cylinder 21 as a filter cylinder having a filter portion 20, an outer cylinder 22 covering the inner cylinder 21, the inner cylinder 21 and the outer cylinder 21. A pair of end plates 23 and 24 fixed to each end of the tube 22 are provided.

  A water collection space 25 having an appropriate interval is formed between the inner cylinder 21 and the outer cylinder 22. The water collecting pipe 10 described above is provided on the outer periphery of the lower portion of the outer cylinder 22 so as to communicate downward.

  Further, the horizontal pulling pipe 16 is divided into two pipes 16a and 16b on the upstream side and the downstream side, and a flange 26 is formed at each end.

  A cylindrical portion 27 a formed at one end of the cap 27 is loosely fitted to the upstream pipe 16 a and is prevented from being detached by the flange 26. A similar cylindrical portion 28a of the cap 28 is loosely fitted to the downstream pipe 16b and is prevented from being detached by the flange 26.

  Holes 29 for allowing rainwater W to pass through are formed in the end plates 23 and 24 of the outer cylinder 22, and screws 30 are formed on the outer peripheries of the end plates 23 and 24, respectively. Screws 31 that can be screwed onto the screws 30 are formed on the caps 27 and 28, respectively.

  The water collector 9 is laterally pulled so that the end plate 23 and the flange 26 and the end plate 24 and the flange 26 are brought into close contact with each other by screwing the screws 31 of the caps 27 and 28 with the screws 30 of the end plates 23 and 24, respectively. The pipe 16 is disposed.

  Next, the filter part 20 of the inner cylinder 21 of the water collector 9 will be described with reference to FIGS. 4 and 5.

  The filter portion 20 of the inner cylinder 21 is formed by arranging a plurality of thin wedge-shaped wires (referred to as fine wedge wires) 33 with fine openings (slits) 34 as shown in FIGS. 4 and 5. . The opening 34 expands from the inner cylinder 21 toward the outer side.

  The fine wedge wire 33 has a length in the longitudinal direction of 0.5 to 1 mm, and is made of SUS. A virtual inner surface 35 is formed by connecting the inner surfaces 33 a of the fine wedge wires 33.

  The size of the openings 34 is 100 to 300 μm, and the arrangement direction of the openings 34 is arranged substantially perpendicular to the flow direction of the rainwater W (see FIG. 1) indicated by the arrow 36. The length of the filter unit 20 in the flow direction is 100 to 300 mm.

  As shown in FIGS. 4 and 5, the fine wedge wire 33 has an inner surface 33a downstream of the vertical line 38 of the virtual inner surface 35 parallel to the center of the inner cylinder 21 (see FIG. 3) by an angle θb. Inclined. This angle θb is 2 to 20 °.

  By inclining the fine wedge wire 33 in this manner, the upstream corner portion A of the inner surface 33a of the fine wedge wire 33 shown in FIG. 5 is slightly higher than the downstream corner portion B.

  Thus, by tilting the fine wedge wire 33 to the downstream side, the corner portion A of the fine wedge wire 33 forms a stepped portion. Then, the rainwater W flowing along the virtual inner surface 35 changes its direction so as to hit the corner corner A (step portion) and soar as indicated by an arrow 39.

  Thus, when the rainwater W soars from the step A (upstream corner), fine particles contained in the rainwater W enter into the openings 34 between the fine wedge wires 33 and become clogged. Such a trouble phenomenon is surely prevented.

  As a result, the inner cylinder 21 of the water collector 9 can always maintain good water collecting performance, and maintenance of clogging removal for the inner cylinder 21 can be made almost unnecessary.

  In the rainwater separating / collecting apparatus configured as described above, the rainwater W that pours onto the roof 2 of FIG. 1 is collected along the gutter 3 in the vertical gutter 4. The rainwater W flowing down the vertical gutter 4 as indicated by an arrow 40 flows into the inner cylinder 21 of the water collector 9 as indicated by an arrow 36 in FIG.

  Thus, since the inner cylinder 21 has the filter portion 20 and the water collection space 25, the clean water Wa filtered by the inner cylinder 21 and stored in the water collection space 25 is indicated by an arrow 41 in FIG. As shown in FIG. 1, the water is stored in the water storage tank 11 of FIG.

  Moreover, since the inner cylinder 21 is a filter cylinder in which the filtering action is performed on the entire circumference of the inner cylinder 21 when the rainwater W passes through the inner cylinder 21 as described above, the water collection efficiency of the clean water Wa is increased. be able to.

  A part of the rainwater W in the inner cylinder 21, that is, the rainwater W that is not filtered by the filter unit 20 due to a large amount of rainwater W, was discharged from the inner cylinder 21 to the pipe 16 b as indicated by an arrow 42 in FIG. Then, as shown by the arrow 43, it is discharged to the drain pipe 7 (see FIG. 1) and further discharged to the sewage pipe 6.

  At this time, large dust such as fallen leaves and fine particles (not shown) separated and removed by the filter unit 20 of the inner cylinder 21 in FIG. 3 are separated from the sewage pipe of FIG. 1 by rain water W flowing in the inner cylinder 21. 6 is discharged.

  Now, if the fine wedge wire 33 is not inclined to the downstream side and the inner surface 33a of the fine wedge wire 33 is on the same plane, fine particles having a size substantially the same as the size of the opening 34 flows along with the rain water W. Sometimes, the fine particles are caught in the openings 34 and the openings 34 are clogged, and the water collection efficiency of the filter unit 20 may be reduced.

  In this respect, the fine wedge wire 33 according to the present invention is inclined downstream as described above to form a stepped portion (corner corner A). Even at the position 34, the fine particles are swollen by the flow of the rain water W indicated by the arrow 39, and the clogging of the openings 34 due to the fine particles is prevented.

  That is, since the filter portion 20 of the inner cylinder 21 is a filter cylinder made of fine wedge wires 33 having a large number of finely spaced openings 34, fine particles can be separated and removed, and the water collection efficiency becomes very high. ing.

  Further, since the clogging of the openings 34 of the fine wedge wire 33 is prevented as described above, the clean water Wa from which the dust is separated and removed by the fine wedge wire 33 can be reliably collected, and the water collector 9 It is possible to improve water collection efficiency.

  FIG. 6 shows data of an experimental example in which the water collector 9 using the fine wedge wire 33 is used to measure the water collection rate with respect to the flow rate and the fine particle removal rate with respect to the flow rate.

<Experimental example 1>
In Experimental Example 1, the results obtained based on the following specifications are shown.

A vinyl chloride pipe having an inner diameter of the vertical shaft 4 in FIG.
The fine wedge wire 33 (see FIG. 5) of the water collector 9 of FIG. 3 is SUS316 having a wire diameter (cross-sectional length) of 0.75 mm, and the opening 34 is 100 μm.
The inclination angle θb of the fine wedge wire 33 is 5 °,
When the effective length of the fine wedge wire 33 (the length in the left-right direction in FIG. 3) is 200 mm,
Experimental Example 1 shows that the water collection rates at 3 L, 10 L, and 20 L / min of rainwater W are 80%, 83%, and 88%, respectively, and the fine particle removal rate at a flow rate of 10 L / min is 95%. Show.

<Experimental example 2>
In Experimental Example 2, the results obtained based on the following specifications are shown.

The vertical shaft 4 is a vinyl chloride tube with an inner diameter of φ50 mm,
The fine wedge wire 33 of the water collector 9 is SUS316 having a wire diameter of 0.75 mm, and the opening 34 is 150 mm.
The inclination angle θb of the fine wedge wire 33 is 5 °,
When the effective length of the fine wedge wire 33 is 200 mm,
In Experimental Example 2, the water collection rates at a flow rate of rainwater W of 3 L, 10 L, and 20 L / min are 82%, 86%, and 92%, respectively, and the fine particle removal rate at a flow rate of 10 L / min is 95%. Is shown.

<Comparative example 1>
In the comparative example 1, the result performed based on the following specifications is shown.

The vertical shaft 4 is a vinyl chloride tube with an inner diameter of φ50 mm,
The fine wedge wire 33 of the water collector 9 is made of SUS316 having a wire diameter of 0.75 mm and has an opening of 150 μm,
The inclination angle θb of the fine wedge wire 33 is 1 °,
When the effective length of the fine wedge wire 33 is 200 mm,
Comparative Example 1 shows that the collection rates of rainwater W at 3 L, 10 L, and 20 L / min are 50% and 52%, respectively, and the fine particle removal rate at 10 L / min is 95%.

<Comparative example 2>
In Comparative Example 2, a part of the horizontal pipe (φ50 mm) of a conventionally known water collector was expanded and connected to a U-shaped filtration tank to measure the water collection rate and fine particle removal rate. Results are shown.

  As shown in FIG. 6, the water collector 9 of FIG. 3 in which a fine wedge wire 33 having a wire diameter of 0.75 mm and an opening of 100 to 150 μm is inclined by 5 ° obtains a preferable water collection rate and fine particle removal rate. be able to.

  FIG. 7 shows a water collector 9A according to Embodiment 2 of the present invention. In addition, in the water collector 9A of the second embodiment, the configuration of the inner cylinder 21 is different from that of the first embodiment, and the others are the same as those shown in FIG.

  The water collector 9A shown in FIG. 7 has a semi-cylindrical filter portion 20 on the lower side, and this filter portion 20 is the same as the fine wedge wire 33 of the first embodiment described with reference to FIGS. Is.

  The upper side of the inner cylinder 21 is formed of a water-impermeable semi-cylindrical member 45, and the cylindrical inner cylinder 21 is configured by combining the semi-cylindrical member 45 and the semi-cylindrical filter portion 20. . In this way, even if only the lower side of the inner cylinder 21 is the filter unit 20 made of the fine wedge wire 33, it is possible to efficiently obtain the clean water Wa by filtering the rainwater W flowing into the water collector 9A. .

  FIG. 9 schematically shows the water collector 9 in the first and second embodiments for easy understanding. FIG. 9A shows a double cylinder in which a cylindrical inner cylinder 21 made of a fine wedge wire 33 (see FIGS. 4 and 4) is disposed in the outer cylinder 22, and FIG. 9B shows the outer cylinder 22. A double cylinder including an inner cylinder 21 formed by combining a semi-cylindrical member 45 formed of a semi-cylindrical filter portion 20 on the lower side and an impermeable member on the upper side is illustrated.

  FIG. 8 shows a part of the lower side of the water collector 9B according to the third embodiment of the present invention. In addition, the same thing as what is shown in FIG. 3 of Example 1 attaches | subjects the same code | symbol, and the description is abbreviate | omitted.

  In the water collector 9 in FIG. 3 described above, when the amount of rain water W flowing into the inner cylinder 21 of the water collector 9 is large and the amount of clean water Wa filtered by the inner cylinder 21 is large, for example, the water collecting space 25 When the water surface 50 of the clean water Wa staying inside is at the position indicated by the two-dot chain line, there is a problem that the efficiency of collecting water in the water collecting pipe 10 is lowered.

  That is, not all of the clean water Wa filtered by the filter unit 20 is collected by the water collection pipe 10, and a part of the clean water Wa staying in the water collection space 25 is connected to each end of the filter unit 20. May return to the inner cylinder 21 again to reduce the water collection efficiency.

  In order to solve this problem, in the third embodiment, an impermeable member 46 is provided on the outer periphery of the lower end portion of the inner cylinder 21 of the water collector 9B as shown in FIG. The water-impermeable member 46 is formed by integrally forming a flange 48 on one end side (the lower end side in the drawing) of the cylindrical portion 47.

  As shown in FIG. 8, the impermeable member 46 is disposed at the lower end of the inner cylinder 21 </ b> B of the water collector 9 </ b> B. The clean water Wa is prevented from returning into the inner cylinder 21 </ b> B by the impermeable member 46. Thereby, the water collection efficiency of the clean water Wa in the water collection space 25 can be increased.

  FIG. 10A schematically shows the water collector 9B in Example 3 for easy understanding. The water collector 9 </ b> B is a double cylinder in which an inner cylinder 21 </ b> B having a water-impermeable member 46 at a lower end is accommodated in the outer cylinder 22.

  FIG.10 (b) has shown the schematic diagram of the water collector 9C concerning Example 4 of this invention. The inner cylinder 21C of the water collector 9C in the present embodiment includes a semi-cylindrical filter portion 20 on the lower side and a semi-cylindrical member 45 on the upper side as in the water collector 9A shown in FIGS. 7 and 9B. It is composed by combining.

  And the water collector 9C consists of what has arrange | positioned the impermeable member 51 in each edge part of the filter part 20 of the said inner cylinder 21C. The water-impermeable member 51 is formed by dividing the water-impermeable member 46 of FIG. 10A in half, and a half flange 53 is integrally formed at one end of the semi-cylindrical portion 52.

  Thus, even if the water-impermeable member 51 is disposed on the lower filter portion 20 of the water collector 9C, the water collection efficiency of the water collector 9C is increased in the same manner as the water collector 9B of the third embodiment. be able to.

  In addition, although the water collector 9 shown in FIG. 1 showed the example arrange | positioned on the outdoors (the ground) of the building 1, this water collector 9 is connected to the water storage tank 11 as shown in FIG. It is also possible to arrange in the manhole 12. FIG. 12 shows an enlargement of the water collector 9 in FIG.

  As shown in FIG. 12, the water collector 9 is connected to the pipes 16a and 16b of the horizontal pulling pipe 16 extending into the manhole 12, and the method of connecting the water collector 9 is as shown in FIG. Since it is the same as that of the vessel 9, its description is omitted. The water collector 9 is arranged with a gradient θa.

  Below the water collector 9, an inner lid 55 placed on a step portion 12 a provided in the manhole 12 is disposed. The water collecting pipe 10 of the water collector 9 passes through the inner lid 55 and is connected to the water storage tank 11 of FIG.

  The rainwater W flowing down the vertical shaft 4 in FIG. 11 is filtered by the water collector 9 in the same manner as the water collector 9 in FIG. 1, and the clean water Wa is stored in the water storage tank 11 and the rainwater that is not filtered. W is drained into the sewage pipe 6 through the drain pipe 7 as indicated by an arrow 43.

  FIGS. 13-15 has shown the water collector 9D concerning Example 5 arrange | positioned in the manhole 12. FIG. This water collector 9D is formed by fixing the semi-cylindrical filter part 20 to the central part (position along the diametrical direction) of the drop cover 60 and integrally forming the drop cover 60 and the filter part 20. Yes. The filter unit 20 is disposed so as to be curved concavely upward.

  In addition, the said filter part 20 is comprised from the fine wedge wire 33 shown in FIGS. 4-5, and can collect a fine particle while being able to collect water efficiently.

  A pair of semi-ring-shaped stoppers 61 are fixed to the inner surface of the manhole 12 so as to face each other with a gap. That is, the stopper 61 is shaped to support the lower surface of the drop cover 60 except for the filter portion 20, and is inclined with a gradient θa as shown in FIG. The gradient θa is 0 ° to 30 °.

  The dropping lid 60 of the water collector 9 </ b> D can be disposed in the manhole 12 by being inserted from above the manhole 12 and placed on the stopper 61.

  The pipes 16 a and 16 b of the horizontal pulling pipe 16 are embedded in the ground 5 with an inclination of θa, and their respective ends are exposed facing the manhole 12. Then, by dropping the drop lid 60 onto the stopper 61, each end of the filter unit 20 is made to coincide with the lower end of the pipes 16a and 16b.

  A seal member (not shown) may be provided between the stopper 61 and the drop lid 60 placed on the stopper 61.

  In the water collector 9D configured as described above, when the rainwater W flowing down the vertical gutter 4 in FIG. 11 flows into the filter unit 20 from the pipe 16a of the horizontal pulling pipe 16 as shown in FIGS. The clean water Wa filtered by 20 is stored in the lower water storage tank 11 (see FIG. 11), and the rain water W not filtered by the filter unit 20 is discharged to the sewage pipe 6 (see FIG. 11) through the pipe 16b.

  Thus, the water collection efficiency by the filter unit 20 can be enhanced by collecting the clean water Wa filtered by the filter unit 20 directly into the water storage tank 11. Further, the water collector 9D is disposed in the manhole 12 by placing the dropping lid 60 of the water collector 9D on the stopper 61, so that the water collector 9D can be easily disposed.

  In addition, in the said Example 5, although the filter part 20 as a water collection part of the water collector 9D consists of a semi-cylindrical thing opened upwards, instead of this, FIG.9 (b Of course, a cylindrical member (not shown) formed by covering the upper side of the filter portion 20 with a semi-cylindrical semi-cylindrical member 45 as shown in FIG.

  As described above, the water collector 9 that filters the rainwater W flowing down the downpipe 4 of FIG. 1 has the double structure of the inner cylinder 21 having the filter portion 20 and the outer cylinder 22 of the impermeable member in FIG. Therefore, the water collection efficiency of the rainwater W by the water collector 9 can be increased.

  Moreover, since the filter part 20 is comprised by the fine wedge wire 33 (refer FIG. 4, FIG. 5) which can separate and remove a fine particle, the appropriate clean water Wa from which the fine particle contained in the rain water W was removed is obtained. Furthermore, since the fine wedge wire 33 is inclined at an angle θb with respect to the flow direction of the rainwater W, it is possible to efficiently prevent clogging of fine particles in the openings 34 of the fine wedge wire 33. it can.

  The embodiments and examples of the present invention have been described in detail above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the design changes are within the scope of the present invention. Are included in the present invention.

It is a front view of the building and water storage tank to which the rainwater separation water collecting apparatus concerning Example 1 of this invention is applied. (A) is a front view of the lower part of the vertical shaft provided with the water collector, (b) is a front view showing another example of the lower part of the vertical wall provided with the water collector. It is a cross-sectional side view of a water collector. It is a cross-sectional side view of a fine wedge wire. FIG. 5 is an enlarged detail view of the fine wedge wire of FIG. 4. It is the figure which tabulated the Example and comparative example of the water collection rate and fine particle removal rate by a water collector. It is a cross-sectional side view of the water collector concerning Example 2 of the present invention. It is an enlarged view of the water collector lower part concerning Example 3 of the present invention. (A) is a schematic diagram of the inner cylinder and outer cylinder concerning Example 1, (b) is a schematic diagram of the inner cylinder and outer cylinder concerning Example 2. FIG. (A) is a schematic diagram of the inner cylinder and outer cylinder concerning Example 3, (b) is a schematic diagram of the inner cylinder and outer cylinder concerning Example 4. FIG. It is a front view of the building and water storage tank which show another example of arrangement | positioning of the water collector. It is an enlarged view of the water collector shown in FIG. It is a perspective view of the water collector concerning Example 5 of the present invention. FIG. 14 is a cross-sectional view taken along line AA in FIG. 13. FIG. 15 is a cross-sectional view taken along line B-B in FIG. 14.

Explanation of symbols

W Rainwater Wa Clean water 1 Building 3 Horizontal shaft 4 Vertical shaft 8 Rainwater separating water collecting device 9, 9A to 9D Water collector 11 Water storage tank 20 Filter unit 21, 21A to 21C Inner tube 22 Outer tube 25 Water collecting space 46 Impermeability Member 51 Impervious member

Claims (5)

In a rainwater separating and collecting apparatus provided with a vertical drain that drains from the rain gutter of a building, and provided with a water storage tank for storing rainwater that flows down from the vertical fence through a water collecting section,
The water collecting portion includes an inner cylinder that communicates with the vertical shaft and extends in the horizontal direction and has a filter portion, and an outer cylinder that covers the inner cylinder, and is formed between the inner cylinder and the outer cylinder; A rainwater separation and collection apparatus having a cylindrical water collection space communicating with a water collection pipe connected to the water storage tank and having a downstream side connected to a drain pipe.   The rainwater separation and collecting apparatus according to claim 1, wherein the inner cylinder is a filter cylinder in which a wedge wire is wound and a slit having a predetermined width is formed.   The rainwater separating and collecting apparatus according to claim 2, wherein the inner peripheral surface of the wedge wire has an upstream corner portion positioned higher than a downstream corner portion.   The rainwater separating and collecting apparatus according to claim 2 or 3, wherein a downstream side portion of the filter cylinder is closed with an impermeable portion.   4. The rainwater separation and collection device according to claim 2, wherein the inner cylinder has a semi-cylindrical filter portion on the lower side, at least a downstream side portion is closed by an impermeable member.

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