Rainwater storage facility

Abstract

The present invention relates to a rainwater storage facility, and more specifically, to a rainwater storage facility that is lightweight, can enhance safety against external pressure, and enables efficient use of rainwater by providing a filtration function. The rainwater storage facility of the present invention comprises a tubular storage tank into which rainwater is introduced and stored through a rainwater inlet pipe installed on the front, a first partition installed inside the storage tank to divide the interior of the storage tank into a filtration space and a storage space, a plurality of second partitions installed in the storage space spaced apart in the front-rear direction, water passages formed at the bottom of each of the second partitions to allow rainwater to pass through, and a filter unit installed in the filtration space to filter rainwater moving from the filtration space to the storage space.

Description

Technology Field

[0001] The present invention relates to a rainwater storage facility, and more specifically, to a rainwater storage facility that is lightweight, can enhance safety against external pressure, and enables efficient use of rainwater by providing a filtration function. Background Technology

[0002] In general, rainwater is discharged into rivers or the sea through rainwater pumping stations or sewer pipes, making it unusable for domestic purposes. This causes flood damage, leading to severe groundwater depletion and the drying up of streams.

[0003] Despite having rainfall exceeding the global average, Korea is failing to utilize rainwater effectively. Furthermore, rainfall is concentrated during the summer months, and in rural and mountainous areas, most of this rainwater is discharged directly into rivers or the sea.

[0004] As part of efforts to solve these problems, rainwater storage facilities are known. A rainwater storage facility is a large-scale storage tank designed to collect rainwater when it rains and use it as domestic water, landscaping water, or agricultural water when needed.

[0005] Conventional rainwater storage facilities utilize concrete to construct large tanks, which makes it difficult to adapt to the shape of the construction site and results in poor constructability; furthermore, they are heavy and require significant cost and time for production. Consequently, rainwater storage facilities made of synthetic resin are being used, but they have the disadvantages of low durability and vulnerability to external pressure.

[0006] In addition, rainwater flowing into a rainwater storage facility is mixed with foreign substances such as non-point source pollutants, soil, and sand, which limits the use of the rainwater for various purposes. Accordingly, Korean registered patent No. 10-1043814 discloses a rainwater management facility equipped with a screen filter, but there is a problem in that the screen filter is installed outside the tank. Prior art literature

[0007] Republic of Korea Registered Patent No. 10-1043814: Rainwater Management Facility The problem to be solved

[0008] The present invention was created to improve upon the aforementioned problems, and its purpose is to provide a rainwater storage facility that is lightweight, enhances safety against external pressure, and enables the efficient use of rainwater by providing an internal filtration function. means of solving the problem

[0009] The rainwater storage facility of the present invention for achieving the above objective comprises: a tubular storage tank in which rainwater is introduced and stored through a rainwater inlet pipe installed on the front; a first partition installed inside the storage tank to divide the interior of the storage tank into a filtration space and a storage space; a plurality of second partitions installed in the storage space spaced apart in the front-rear direction; a water passage formed at the bottom of each of the second partitions to allow rainwater to pass through; and a filter unit installed in the filtration space to filter rainwater moving from the filtration space to the storage space.

[0010] The filter unit comprises a guide box installed on the front of the first partition and formed vertically, through which rainwater flows in via the bottom; a cartridge installed inside the guide box so as to be slidable vertically and through which rainwater flowing into the guide box can pass; filter media contained inside the cartridge to remove foreign substances in the rainwater passing through the cartridge; a filtration discharge pipe formed on the rear of the guide box and penetrating the first partition so that rainwater passing through the cartridge can flow into the storage space; and a connecting bar connected to the cartridge and extending upward from the cartridge.

[0011] The apparatus further comprises a bulkhead reinforcement means for reinforcing the first and second bulkheads, wherein the bulkhead reinforcement means comprises a grid frame installed on one surface of each of the first and second bulkheads, and a connecting frame installed between the first and second bulkheads to interconnect the first and second bulkheads.

[0012] The above-mentioned reservoir is further provided with a reservoir reinforcement means for reinforcing the reservoir, wherein the reservoir reinforcement means comprises a ring frame that is installed at regular intervals inside the reservoir and is formed in a circular shape along the inner circumference of the reservoir with a flared lower end, and a pair of intersecting frames that are respectively coupled to the flared ends of the ring frame and intersect on the inner side of the ring frame.

[0013] The filter unit further comprises a filtration promoting means installed inside the guide box so as to be located below the cartridge, wherein the filtration promoting means comprises a lower inclined plate and an upper inclined plate arranged in a zigzag pattern spaced apart in the vertical direction and formed to be inclined downward, a support panel installed above the upper inclined plate to block the interior of the guide box, and a plurality of diffusers installed at regular intervals on the support panel and having a passage formed inside through which rainwater passes, wherein the diffuser comprises a cylindrical cylinder portion, a cone portion coupled to the upper part of the cylinder portion and formed such that the diameter increases from the bottom to the top, and a lip portion coupled to the upper part of the cone portion and penetrating the support panel. Effects of the invention

[0014] As described above, since the reservoir is manufactured from fiber-reinforced plastic (FRP) material, the present invention has the advantages of being lightweight, having enhanced safety against external pressure, and being easy to construct.

[0015] In addition, since the present invention has an internal filter unit installed to filter and store rainwater, the rainwater can be utilized for a wider variety of purposes, enabling efficient use of rainwater. Brief explanation of the drawing

[0016] FIG. 1 is a cross-sectional view roughly showing the interior of a rainwater storage facility according to an example of the present invention, and FIG. 2 is an exploded perspective view of the essential parts applied to FIG. 1, and FIG. 3 is a cross-sectional view roughly showing the interior of a rainwater storage facility according to another example of the present invention, and FIG. 4 is a perspective view of the key parts applied to FIG. 3, and FIG. 5 is a perspective view showing an excerpt of a key part of a rainwater storage facility according to another example of the present invention, and FIG. 6 is a cross-sectional view showing a portion of a rainwater storage facility according to another example of the present invention, and Figure 7 is a cross-sectional view showing the interior of the diffuser applied in Figure 6. Specific details for implementing the invention

[0017] Hereinafter, a rainwater storage facility according to a preferred embodiment of the present invention will be described in detail.

[0018] Referring to FIGS. 1 and 2, a rainwater storage facility according to an example of the present invention comprises a tubular storage tank (10) into which rainwater is introduced and stored, a first partition (20) installed inside the storage tank (10) to divide the interior of the storage tank (10) into a filtration space (11) and a storage space (13), a plurality of second partitions (25) installed in the storage space (13) spaced apart in the front-rear direction, a water passage (26) formed at the bottom of each of the second partitions (25) to allow rainwater to pass through, and a filter unit (30) installed in the filtration space (11) to filter rainwater moving from the filtration space (11) to the storage space (13).

[0019] The reservoir (10) is formed with a cylindrical structure. In the present invention, the reservoir (10) is made of fiber-reinforced plastic (FRP) material. The reservoir (10) made of fiber-reinforced plastic material is lightweight yet has excellent durability.

[0020] Although not shown, the reservoir (10) may be constructed with a structure in which an inner wall and an outer wall are laminated. For example, a glass fiber mat impregnated with unsaturated polyester resin may be rolled into a cylindrical shape to form the inner wall. Then, a glass fiber roving yarn impregnated with unsaturated polyester resin may be wrapped around the outside of the inner wall to form the outer wall. A reservoir (10) with such a structure can greatly improve strength.

[0021] A rainwater inlet pipe (15) is installed on the front of the storage tank (10). Rainwater flows into the interior of the storage tank (10) through the rainwater inlet pipe (15). A number of openable manholes (17) are installed on the top of the storage tank (10). The interior of the storage tank (10) can be easily managed through the manholes (17).

[0022] A plurality of partitions (20)(25) are installed inside the reservoir (10). The partitions (20)(25) may be formed from fiber-reinforced plastic (FRP) material. The partitions (20)(25) are formed in a disc shape and installed to block the internal space of the reservoir (10). The partitions (20)(25) are spaced apart from each other in the front-rear direction. The partitions consist of one first partition (20) and a plurality of second partitions (25).

[0023] The first partition (20) is located at the very front among the multiple partitions. The interior of the reservoir (10) is divided into a filtration space (11) and a storage space (13) by the first partition (20). The space located in front of the first partition (20) is the filtration space (11), and the space located behind the first partition (20) is the storage space (13).

[0024] A conventional screen filter (17) may be installed in the filtration space (11). Rainwater introduced through the rainwater inlet pipe (15) passes through the screen filter (17) and flows into the filtration space (11).

[0025] Multiple second partitions (25) are installed in the storage space (13) spaced apart in the front-rear direction. One storage space is divided into multiple spaces by the second partitions (25).

[0026] Unlike the first partition (20), a water passage (26) is formed at the bottom of each of the second partitions (25). Rainwater can flow through the second partitions (25) via the water passage (26). Rainwater stored in the storage space (13) can be discharged to the outside of the storage tank (10) when necessary and used as domestic water, landscaping water, agricultural water, etc. To this end, one or more pumps (29) may be installed inside the storage tank (10).

[0027] A filter unit (30) is installed in the filtration space (11). Rainwater flowing into the filtration space (11) passes through the filter unit (30) and flows into the storage space (13).

[0028] The filter unit (30) comprises a guide box (31) installed on the front of the first partition (20), a cartridge (33) installed inside the guide box (31), filter media (35) received inside the cartridge (33) to remove foreign substances in rainwater passing through the cartridge (33), a filter discharge pipe (39) formed on the rear of the guide box (31) and penetrating the first partition (20) so that rainwater passing through the cartridge (33) can flow into the storage space (13), and a connecting bar (39) connected to the cartridge (33) and extending upward from the cartridge (33).

[0029] The guide box (31) is installed on the front of the first partition (20). The guide box (31) is made of a hollow, open-top and open-bottom structure. The open bottom of the guide box (31) is an inlet for rainwater to flow in. The bottom of the guide box (31) is spaced apart from the bottom of the reservoir (10).

[0030] A filtration discharge pipe (37) is formed on the rear side of the guide box (31). The filtration discharge pipe (37) penetrates the first partition (20).

[0031] The cartridge (33) is installed inside the guide box (31). The cartridge (33) is made of a tubular structure. The upper and lower surfaces of the cartridge (33) are made of perforated plates to allow rainwater to pass through. Rainwater flowing into the interior of the guide box (31) through the lower part of the guide box (31) passes through the cartridge (33) while forming an upward flow.

[0032] A large number of filter media (35) are accommodated inside the cartridge (31). Spherical fiber ball filter media can be used as the filter media (35). Fiber ball filter media have excellent adsorption capacity and can effectively remove colloidal suspended solids. Since the fiber ball filter media must be able to flow with the flow of water, it is desirable to have a porous structure with a specific gravity of 0.2 to 0.8, which is light, and an average pore size of 20 to 30 μm. Fiber ball filter media can be formed into a three-dimensional network structure or a spongy structure using fibers made of synthetic resin material. Any one selected from polyvinylidene chloride fibers, polyester fibers, and polyethylene fibers can be used as the fiber. Fiber ball filter media formed from such fibers is light and has a porous structure.

[0033] The cartridge (33) can slide vertically inside the guide box (31). The cartridge (33) can be taken out to the outside through a manhole located above the guide box (31).

[0034] The connecting bar (39) is connected to the upper part of the cartridge (33). The connecting bar (39) is formed to be long in the vertical direction. The upper part of the connecting bar (39) can be supported so that it can be attached to and detached from a manhole. Using the connecting bar (39), the manager can pull the cartridge (33) out of the reservoir (10) to wash or replace the filter media (35) and then insert it back into the guide box (31).

[0035] The present invention described above has the advantage that the reservoir (10) is made of fiber-reinforced plastic (FRP) material, making it lightweight while increasing safety against external pressure and facilitating construction. In addition, the present invention has a filter unit (30) installed inside to filter and store rainwater, allowing the rainwater to be utilized for a wider variety of purposes, thereby enabling efficient use of rainwater.

[0036] Meanwhile, a rainwater storage facility according to another aspect of the present invention may further be provided with a partition reinforcement means for reinforcing the first and second partitions.

[0037] Referring to FIGS. 3 and 4, the bulkhead reinforcement means comprises a grid frame (41) installed on one side of each of the first and second bulkheads (20)(25), and a connecting frame (45) installed between the first and second bulkheads (20)(25) to interconnect the first and second bulkheads (20)(25).

[0038] The grid frame (41) is formed such that two horizontal frames and two vertical frames intersect. The grid frame (41) may be formed of a metal material. The grid frame (41) can effectively prevent bending deformation of the first and second partitions (20)(25) made of fiber-reinforced plastic material.

[0039] A connecting frame (45) is installed between the first and second partitions (20)(25) to interconnect the first and second partitions (20)(25). The connecting frame (45) may be made of a hollow circular pipe structure. A flange is installed at the end of the connecting frame (45). The flanges of adjacent connecting frames (45) are fastened together by bolts and nuts.

[0040] In the illustrated example, the water passage (27) is formed at the bottom of the second partition (25) so as not to overlap with the grid frame (41).

[0041] Meanwhile, as another example, the present invention may further provide a reservoir reinforcement means for reinforcing the reservoir. The reservoir reinforcement means prevents deformation and damage to the reservoir due to external pressure applied from the outside of the reservoir.

[0042] Referring to FIG. 5, the reservoir reinforcement means comprises a ring frame (51) installed inside the reservoir (10) and a pair of intersecting frames (53) that intersect inside the ring frame (51).

[0043] A ring frame (51) is attached to the inner circumference of the reservoir (10) and a number of them are arranged at regular intervals. For example, the ring frames (51) can be installed at intervals of 1 to 2 meters. A metal square pipe with a cross-section in the shape of a square can be used as the ring frame (51). The ring frame (51) is formed in a circular shape along the inner circumference of the reservoir (10), but is formed so that the lower part flares out. This ring frame (51) forms a C-shape that flares out toward the lower part. With a ring frame (51) of this structure, rainwater can be prevented from accumulating on the bottom of the reservoir (10).

[0044] The cross frame (53) is connected to each of the open ends of the ring frame (51) and extends straight in a diagonal direction. Thus, a pair of cross frames (53) intersect on the inside of the ring frame (51).

[0045] Meanwhile, as another example, the filter unit of the present invention may further be equipped with a filtration promoting means. The filtration promoting means reduces foreign substances in rainwater flowing into the filter unit and simultaneously forms a vortex to break down and diffuse floating matter into small pieces.

[0046] Referring to FIGS. 6 and 7, the filtration promoting means is installed inside the guide box (31) so as to be located below the cartridge (33).

[0047] The filtration promotion means comprises a lower inclined plate (51) and an upper inclined plate (53) that are spaced apart in the vertical direction and arranged in a zigzag pattern, formed to be inclined downward; a support panel (55) installed above the upper inclined plate (53) to block the interior of the guide box (31); and a plurality of diffusers (60) installed at regular intervals on the support panel (55) and having a passage formed inside through which rainwater passes.

[0048] The lower inclined plate (51) is connected to the inner surface of the guide box (31) and extends forward by a certain length. The end of the lower inclined plate (51) is spaced apart from the inner surface of the guide box (31) so that rainwater can pass through.

[0049] The upper inclined plate (53) is located above the lower inclined plate (51). The upper inclined plate (53) is connected to the inner surface of the guide box (31) and extends a certain length backward. The end of the upper inclined plate (53) is spaced apart from the inner surface of the guide box (31) to allow rainwater to pass through.

[0050] Rainwater flowing into the lower part of the guide box (31) moves in a zigzag pattern by the lower inclined plate (51) and the upper inclined plate (53), thereby increasing the retention time. During the movement of the rainwater, some of the foreign substances mixed in the rainwater collide with the lower inclined plate (51) and the upper inclined plate (53) and settle.

[0051] The support panel (55) is located above the upper inclined plate (53). The support panel (55) is installed to block the guide box (31).

[0052] A plurality of diffusers (60) are installed on the support panel (55). A passage for rainwater to pass through is formed inside the diffuser (60).

[0053] The illustrated diffuser has a cylindrical cylinder portion (61), a cone portion (63) coupled to the upper part of the cylinder portion (61) and formed to have a diameter that increases from the lower part to the upper part, and a lip portion (67) coupled to the upper part of the cone portion (63) and penetrating the support panel (55).

[0054] The cylinder section (61) is formed as a cylindrical structure with open upper and lower ends. The cylinder section (61) is the inlet portion into which rainwater flows. A plurality of protruding ridges (62) are formed on the inner surface of the cylinder section (61). The protruding ridges (62) are spaced apart in the vertical direction. Each protruding ridge (62) is formed in an annular shape along the circumference of the inner surface of the cylinder section (61). Among the plurality of protruding ridges (62), the protruding ridge located in the middle protrudes the most toward the inside of the cylinder section (61). Furthermore, the degree of protrusion of the protruding ridges decreases as one moves upward or downward relative to the middle protruding ridge.

[0055] The cone portion (63) is formed on the upper part of the cylinder portion (61). The cylinder portion (61) is formed such that its diameter increases from the bottom to the top. A plurality of ribs (64) are provided on the inner surface of the cone portion (61) and formed in an elongated diagonal direction. Each rib has a shape twisted at 30 to 60°.

[0056] The lip portion (67) is formed on the upper part of the cone portion (63). The lip portion (67) is formed as a cylindrical structure with the upper and lower ends open. The lip portion (67) penetrates the support panel (55).

[0057] The diffuser (60) described above changes the speed of rainwater by changing the diameter of the passage through which the rainwater passes. Additionally, when the rainwater passes through the cylinder part (61) and the cone part (63), a vigorous vortex is formed by the protruding jaw (62) and the rib (64), and accordingly, the floating matter in the rainwater is broken down and diffused, thereby improving the filtration efficiency by the filter material.

[0058] The present invention has been described above with reference to one embodiment, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent embodiments are possible therefrom. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims. Explanation of the symbols

[0059] 10: Retention tank 11: Filtration space 13: Storage 17: Screen filter 20: Bulkhead 1 25: Bulkhead 2 30: Filter unit 31: Guide box 33: Cartridge 35: Filter

Claims

Claim 1 A cylindrical reservoir in which rainwater is introduced and stored through a rainwater inlet pipe installed on the front; a first partition installed inside the reservoir to divide the interior of the reservoir into a filtration space and a storage space; a plurality of second partitions installed in the storage space spaced apart in the front-rear direction; a water passage formed at the lower portion of each of the second partitions to allow rainwater to pass through; and a filter unit installed in the filtration space to filter rainwater moving from the filtration space to the storage space; wherein the filter unit comprises a guide box installed on the front of the first partition, formed to be elongated in the vertical direction, through which rainwater is introduced through the lower portion; a cartridge installed inside the guide box so as to be slidable in the vertical direction, through which rainwater introduced into the guide box can pass; filter media contained inside the cartridge to remove foreign substances in the rainwater passing through the cartridge; a filtration discharge pipe formed on the rear portion of the guide box and penetrating the first partition to allow rainwater passing through the cartridge to flow into the storage space; and the cartridge A storage facility for utilizing rainwater, characterized by having a connecting bar that is connected and extends upward from the cartridge. Claim 2 delete Claim 3 A storage facility for utilizing rainwater according to claim 1, further comprising a partition reinforcement means for reinforcing the first and second partitions, wherein the partition reinforcement means comprises a grid frame installed on one surface of each of the first and second partitions and a connecting frame installed between the first and second partitions to interconnect the first and second partitions. Claim 4 A storage facility for utilizing rainwater, comprising: a tubular storage tank into which rainwater is introduced and stored through a rainwater inlet pipe installed on the front; a first partition installed inside the storage tank to divide the interior of the storage tank into a filtration space and a storage space; a plurality of second partitions installed in the storage space spaced apart in the front-rear direction; a water passage formed at the lower portion of each of the second partitions to allow rainwater to pass through; and a filter unit installed in the filtration space to filter rainwater moving from the filtration space to the storage space; and further comprising a storage tank reinforcement means for reinforcing the storage tank, wherein the storage tank reinforcement means comprises a ring frame installed at regular intervals inside the storage tank and formed circularly along the inner circumference of the storage tank with a flared lower portion, and a pair of intersecting frames each coupled to the flared ends of the ring frame and intersecting on the inner side of the ring frame. Claim 5 A storage facility for utilizing rainwater according to claim 1, wherein the filter unit further comprises a filtration promoting means installed inside the guide box so as to be located below the cartridge, and the filtration promoting means comprises a lower inclined plate and an upper inclined plate arranged in a zigzag pattern spaced apart in the vertical direction and formed to be inclined downward, a support panel installed above the upper inclined plate to block the interior of the guide box, and a plurality of diffusers installed at regular intervals on the support panel and having a passage formed inside through which rainwater passes, wherein the diffuser comprises a cylindrical cylinder part, a cone part coupled to the upper part of the cylinder part and formed such that the diameter increases from the bottom to the top, and a lip part coupled to the upper part of the cone part and penetrating the support panel.

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