Temporary rainwater storage device

Abstract

The present invention relates to a temporary rainwater storage device, and the temporary rainwater storage device according to the present invention comprises: a fixed block which is disposed at the lowermost side and has a hollow interior so that rainwater flowing in from the outside is filled into the interior; at least one lifting block which is inserted into the fixed block and, when the inside of the fixed block is filled with rainwater, is drawn upward from the fixed block by means of buoyancy and rises to a certain height, and is formed to have a hollow interior so that rainwater flowing in from the upper side fills the interior; a hermetic sealing cover which is formed on the lifting block; and an opening / closing cover formed in part of the hermetic sealing cover, wherein, as the rainwater flows in through the opening / closing cover, the at least one lifting block is lifted due to buoyancy.

Description

Temporary excellent storage device

[0001] This invention is a result of being carried out with the support of the 'Eco-Startup Support Project' promoted by the Ministry of Environment and operated by the Korea Environmental Industry & Technology Institute (Project No.: RT202510034). This invention relates to a rainwater storage device, and more specifically, to a temporary rainwater storage device that can prevent damage caused by heavy rain by temporarily storing rainwater during heavy rain and then discharging the rainwater after the rain stops.

[0002] Urban sewage and drainage systems are generally designed to handle only a fixed amount of water. When much more rain falls than usual, such as during torrential rain, these existing sewage and drainage systems may become overloaded, preventing rainwater from being properly discharged and potentially causing backflow.

[0003] Furthermore, damage caused by heavy rainfall is on the rise because existing drainage facilities often fail to reflect changes in precipitation patterns due to climate change, or because improvements have not been made in response to the need for system expansion due to urbanization.

[0004] In particular, urban areas are mainly covered with asphalt, concrete, etc., so when it rains, water does not seep into the ground but flows along the surface. This is due to the impermeable surface, which cannot absorb rainwater unlike natural soil or green spaces.

[0005] If rainwater cannot infiltrate the ground, it accumulates in the drainage system, and if the drainage system fails to handle it all, water pools or overflows, causing damage such as road flooding or water entering buildings.

[0006] In addition, if sewers become clogged with fallen leaves or debris, water cannot drain properly, which can exacerbate flood damage.

[0007] One of the main causes is the increasing frequency of torrential rains, where a large amount of rain falls in a short period of time, due to recent climate change, and the problem is also being exacerbated by the lack of places to absorb water as green spaces decrease due to urbanization.

[0008] As the damage caused by heavy rainfall is becoming increasingly severe, there is a pressing need for research and development of rainwater storage devices capable of effectively addressing this issue.

[0009] The present invention aims to solve the aforementioned problems. The objective of the present invention is to provide a temporary rainwater storage device capable of storing rainwater during heavy rainfall and discharging it after the rain stops, through a structure that temporarily stores rainwater in an area expected to be damaged by flooding.

[0010] A temporary rainwater storage device according to the present invention for solving the above problems comprises: a fixed block positioned at the bottom and having an empty interior so that rainwater flowing in from the outside is filled inside; at least one rising block formed with an empty interior so that when the interior of the fixed block is filled with rainwater while it is inserted into the fixed block, it is drawn out in the upward direction of the fixed block by buoyancy to rise to a certain height, and the rainwater flowing in from the top is filled inside; a sealing cover formed on the upper part of the rising block; and an opening / closing cover formed on a part of the sealing cover; wherein the at least one rising block may be configured to rise by buoyancy as rainwater flows in through the opening / closing cover.

[0011] In addition, the temporary rainwater storage device according to the present invention may be configured to include: a first rising block formed with an empty interior so that rainwater flowing in from the upper side fills the interior of the fixed block, wherein the rising block is formed in a plurality of units and, when inserted into the fixed block, is drawn out in the upper direction of the fixed block by buoyancy to rise to a certain height when the interior of the fixed block is filled with rainwater; and a second rising block which is drawn out in the upper direction of the first rising block by buoyancy to rise to a certain height when inserted into the first rising block, when the interior of the first rising block is filled with rainwater.

[0012] In addition, the temporary rainwater storage device according to the present invention may have the fixed block having an overall cuboidal shape with an open top surface, and a connecting port may be formed on at least one side to allow rainwater to move.

[0013] In addition, the temporary rainwater storage device according to the present invention may be configured such that the first rising block is installed on the open upper surface of the fixed block, has a cuboidal shape overall with an open upper surface, has a first rainwater movement hole formed in a part of the bottom surface, and allows rainwater to move through the first rainwater movement hole.

[0014] In addition, the temporary rainwater storage device according to the present invention may be configured such that the second rising block is installed into the open upper surface of the first rising block, has an overall cuboidal shape with an open upper surface, has a second rainwater movement hole formed in a part of the bottom surface, and allows rainwater to move through the second rainwater movement hole.

[0015] In addition, the temporary rainwater storage device according to the present invention is installed so as to face upward from the bottom surface of the fixed block and includes a post having a hollow formed therein, and the post is formed to penetrate a first rainwater movement hole formed on the bottom surface of the first rising block, and the size of the first rainwater movement hole formed on the bottom surface of the first rising block is formed to be larger than the cross-sectional size of the post so that rainwater can move to the first rainwater movement hole formed on the bottom surface of the first rising block.

[0016] In addition, the temporary rainwater storage device according to the present invention is installed so as to face upward from the bottom surface of the fixed block and includes a post having a hollow formed therein, wherein the post is formed to penetrate an inlet hole formed on the bottom surface of the first rising block and a second rainwater movement hole formed on the bottom surface of the second rising block, and the size of the first rainwater movement hole formed on the bottom surface of the first rising block is formed to be larger than the cross-sectional size of the post, and the size of the second rainwater movement hole formed on the bottom surface of the second rising block is formed to be larger than the cross-sectional size of the post, so that rainwater can be configured to move through the first rainwater movement hole and the second rainwater movement hole.

[0017] In addition, the temporary rainwater storage device according to the present invention may be configured such that an upper inlet hole is formed in a part of the sealing cover, an opening / closing cover for opening and closing the upper inlet hole is formed, an opening / closing means having a predetermined elasticity is coupled to the opening / closing cover, and when the force exerted by rainwater on the opening / closing cover is greater than a predetermined value, the opening / closing means operates to open the opening / closing cover, thereby allowing rainwater to flow in through the upper inlet hole.

[0018] In addition, the temporary rainwater storage device according to the present invention further includes a rotatable extension panel installed on the upper part of the second rising block, and the rotatable extension panel is rotatably hinged to the second rising block and may be configured to rotate as the second rising block rises.

[0019] In addition, the temporary rainwater storage device according to the present invention further includes a support panel installed on the upper part of the first rising block, wherein the support panel is fixed to the upper part of the first rising block and supports the rotational expansion panel, and the rotational expansion panel may be configured to unfold above the support panel as the second rising block rises.

[0020] A temporary rainwater storage device according to one embodiment of the present invention is installed in an area where damage from heavy rain is expected, and through a structure that temporarily stores rainwater, it has the effect of preventing damage from heavy rain by storing rainwater during heavy rain and discharging it after the rain stops.

[0021] FIG. 1 is an overall configuration diagram of a temporary rainwater storage device according to an embodiment of the present invention.

[0022] FIG. 2 is an implementation diagram of a temporary rainwater storage device according to an embodiment of the present invention.

[0023] FIG. 3 is a schematic diagram of a temporary rainwater storage device according to an embodiment of the present invention.

[0024] FIGS. 4 and 5 are cross-sectional views of a temporary rainwater storage device according to an embodiment of the present invention.

[0025] FIG. 6 is a configuration diagram of an opening and closing means according to an embodiment of the present invention.

[0026] FIG. 7 is a drawing for explaining the coupling relationship of the opening and closing means according to an embodiment of the present invention.

[0027] FIG. 8 is a drawing for explaining the configuration of a discharge unit according to an embodiment of the present invention.

[0028] FIGS. 9 and 10 are drawings for explaining the operation of a rotary extension panel of a temporary rainwater storage device according to an embodiment of the present invention.

[0029] Figure 2 shows the state of the block of the water storage device before it is raised, and Figure 2 shows the state of the block of the temporary water storage device according to the present invention after it is raised.

[0030] As illustrated in the drawing, since the temporary rainwater storage device according to the present invention requires the rising block (200) to rise, it is preferable that the rising block (200), which includes the first rising block (210) and the second rising block (220), be formed of a material having a specific gravity smaller than that of water.

[0031] The temporary rainwater storage device according to the present invention may be configured to include a sealing cover (230) formed on the upper part of a rising block (200) and an opening / closing cover (240) formed on a part of the sealing cover (230). As shown in the drawing, when the rising block (200) is configured to include a first rising block (210) and a second rising block (220), the sealing cover (230) and the opening / closing cover (240) may be formed on the second rising block (220).

[0032] For example, an upper inlet hole (231) is formed in a part of the sealing cover (230), and an opening / closing cover (240) that opens and closes the upper inlet hole (231) is formed, and an opening / closing means (250) with a predetermined elasticity is coupled to the opening / closing cover (240), and when the force of rainwater directly pressing against the opening / closing cover (240) is greater than a predetermined value, the opening / closing means operates to open the opening / closing cover (240), thereby allowing rainwater to flow in through the upper inlet hole (231).

[0033] Additionally, referring to the drawing, the opening and closing means (250) may be configured to include: an upper frame (251) formed in a square shape; a support bar (252) installed above the upper frame (251) and having a predetermined length; a connecting member (253) coupled to the support bar (252) and the opening and closing cover (240); an elastic member (254) providing a predetermined elasticity between the connecting member (253) and the opening and closing cover (240); and a side wall (255) formed to have a predetermined height above the sealing cover (230).

[0034] For example, the elastic member may be composed of a coil spring and fitted into the coupling member (253), and in this coupled state, may provide a certain elasticity between the coupling member (253) and the opening / closing cover (240).

[0035] In addition, a side wall (255) may be formed on the upper surface of the sealing cover (230) to have a predetermined height. If the space formed by the sealing cover (230) and the side wall (255) is called a collection space, rainwater can be collected in the collection space.

[0036] In this way, when rainwater collects in the collection space, weight is applied to the opening / closing cover (240), the elastic member is deformed by the force, and the opening / closing cover (240) moves according to the deformation of the elastic member.

[0037] Due to the movement of the opening / closing cover (240), the opening / closing cover (240), which was in complete contact with the sealing cover (230), is separated from the sealing cover (230), creating a predetermined space so that the opening / closing cover (240) is opened.

[0038] By opening the opening / closing cover (240), rainwater collected in the collection space can flow into the interior of the rising block (200), and as illustrated in FIGS. 1 and 2, rainwater collected in the collection space can flow into the interior of the second rising block (220).

[0039] We will examine in detail the configuration and connection relationship of the fixed block (100) and the rising block (200).

[0040] First, the fixed block (100) may be formed to have an overall cuboid shape, but with an open top surface.

[0041] And the first rising block (210) is installed on the open upper surface of the fixed block (100), has a cuboid shape overall, with the upper surface open, and a first rainwater moving hole (215) is formed in a part of the bottom surface, and can be configured so that rainwater moves through the first rainwater moving hole (215).

[0042] Additionally, the second rising block (220) is installed into the open upper surface of the first rising block (210), has a cuboidal shape overall with an open upper surface, and a second rainwater flow hole (225) is formed in a part of the bottom surface, and can be configured so that rainwater moves through the second rainwater flow hole (225).

[0043] With the above configuration, as the opening / closing cover (240) located on the upper part of the second rising block (220) is opened, rainwater flowing into the interior of the second rising block (220) moves to the first rising block (210) through the second rainwater moving hole (225), and the rainwater that has moved to the first rising block (210) moves to the fixed block (100) through the first rainwater moving hole (215).

[0044] The rainwater that accumulates inside the fixed block (100) gradually accumulates, and the water level inside the fixed block (100) rises. Since the first rising block (210) and the second rising block (220) are formed of a material that can rise by buoyancy, the first rising block (210) and the second rising block (220) rise.

[0045] In this way, while the first rising block (210) and the second rising block (220) are rising or after the rising is completed, rainwater flows back through the first rainwater transfer hole (215), and the water level inside the first rising block (210) gradually rises.

[0046] Accordingly, the second rising block (220) rises.

[0047] In this way, the first rising block (210) and the second rising block (220) can rise to form a shape like Fig. 2, and more space can be secured to store rainwater inside.

[0048] As such, the initial form has a relatively small size, so it can be installed in urban areas, near roads or buildings, and in the event of heavy rain, it can increase its volume on its own to store a large amount of rainwater.

[0049] In particular, if the temporary rainwater storage device according to the present invention is installed in an area where flood damage is expected (e.g., a sloped area or a low-lying area), it has the advantage of being able to be utilized as a type of water barrier by taking advantage of the characteristic that it rises on its own during heavy rain.

[0050] In addition, in the present invention, a connecting hole (105) may be formed on at least one side of the fixed block (100) as needed so that rainwater can move.

[0051] Since the temporary rainwater storage device according to the present invention is formed in a block shape, a plurality of temporary rainwater storage devices can be connected and installed, and at this time, it can be configured so that rainwater can move through the connecting port (105) of the fixed block (100).

[0052] The temporary rainwater storage device according to the present invention may be configured to include a discharge unit (400).

[0053] It may be configured to include a discharge pipe (410) with one side connected to the lower surface of a sealed cover (230); and a discharge module (420) installed on one side of a fixed block (100) and connected to the other side of the discharge pipe (410), and the rainwater of the collection space can be discharged through the discharge pipe (410) and the discharge module (420).

[0054] Additionally, the discharge module (420) may be installed on one side of the fixed block (100) and configured to discharge rainwater stored in the fixed block (100). For example, a discharge hole (not shown) may be formed in the fixed block (100), a discharge module (420) may be installed in the discharge hole, and rainwater may be discharged through the discharge module (420).

[0055] Additionally, the discharge module (420) may be configured to include a nozzle (425), and rainwater may be discharged through the discharge hole of the nozzle (425).

[0056] Additionally, an upper discharge rainwater collection section (426) is formed in the discharge module (420), and the discharge module (420) may be configured to move up and down (ascend / descend) depending on the amount of rainwater accumulated in the discharge rainwater collection section (426). Accordingly, if the amount of rainwater accumulated in the upper discharge rainwater collection section (426) increases, it descends due to weight, and if the amount of rainwater accumulated in the upper discharge rainwater collection section (426) decreases, the discharge module (420) may rise. For example, a predetermined elastic member may be provided inside the discharge module (420) so that the discharge module (420) can be raised when the amount of rainwater accumulated in the upper discharge rainwater collection section (426) decreases.

[0057] In the present invention, the discharge hole can be opened and closed by the lifting of such a discharge module (420).

[0058] Additionally, if necessary, the discharge module (420) may be provided with means for controlling the size of the discharge hole of the nozzle (425). By controlling the size of the discharge hole, the discharge speed or discharge amount can be adjusted.

[0059] In the present invention, the fixed block (100) may be configured to include a fixed block frame (101) and a fixed block plate (102).

[0060] And the first rising block (210) may be configured to include a first rising block frame (211) and a first rising block plate (212), and the second rising block (220) may be configured to include a second rising block frame (221) and a second rising block plate (222).

[0061] That is, in the present invention, each block can be composed of a combination of a frame and a plate.

[0062] In the storage device for an arbitrary amount of water according to the present invention, it is preferable that the volume of the rising block (200) is formed to be smaller as it goes from the bottom to the top, that is, compared to the fixed block (100), and when the rising block (200) is composed of multiple blocks, it is preferable that the block located at the top is formed with a smaller volume.

[0063] For example, as shown in the drawing, the volume of the fixed block (100) can be made largest, the volume of the first rising block (210) can be made largest, and the volume of the second rising block (220) can be made smallest.

[0064] With this configuration, it is preferable that the upper cover (103) of the fixed block be formed so that even if the upper surface of the fixed block (100) is opened and the first rising block (210) is inserted, the upper cover (103) of the fixed block be sealed except for the portion corresponding to the cross-section of the first rising block (210). This upper cover (103) of the fixed block may be manufactured in the form of a frame.

[0065] Likewise, it is preferable that the upper cover (213) of the first rising block be formed so that even if the upper surface of the first rising block (210) is opened and the second rising block (220) is inserted, it can be sealed except for the portion corresponding to the cross-section of the second rising block (220). This upper cover (213) of the first rising block can be manufactured in the form of a frame.

[0066] In addition, the temporary rainwater storage device according to the present invention may have a first buoyancy body (214) formed at the bottom of a first rising block (210) and a second buoyancy body (224) formed at the bottom of a second rising block (220).

[0067] The first buoyancy body (214) is installed at the bottom of the first rising block (210) and can be formed to be larger than the size of the bottom surface of the first rising block (210) and smaller than the size of the bottom surface of the fixed block (200).

[0068] And the second buoyancy body (224) is installed at the bottom of the second rising block (220) and can be formed to be larger than the size of the bottom surface of the second rising block (220) and larger than the size of the bottom surface of the first rising block (210).

[0069] Accordingly, the first buoyancy body (214) and the second buoyancy body (224) each enhance the upward force due to buoyancy, while also enabling guidance according to the size of the first buoyancy body (214) and the second buoyancy body (224) during ascent.

[0070] In addition, the water storage device according to the present invention is installed so as to face upward from the bottom surface of a fixed block (100) and includes a post (300) having a hollow formed therein. The post (300) is formed to penetrate a first water flow hole (215) formed on the bottom surface of a first rising block (210), and the size of the first water flow hole (215) formed on the bottom surface of the first rising block (210) is formed to be larger than the cross-sectional size of the post (300), so that water can move to the first water flow hole formed on the bottom surface of the first rising block (210).

[0071] And the size of the first rainwater flow hole (215) formed on the bottom surface of the first rising block (210) is formed to be larger than the cross-sectional size of the post (300), and the size of the second rainwater flow hole formed on the bottom surface of the second rising block (220) is formed to be larger than the cross-sectional size of the post (300), so that rainwater can move to the second rainwater flow hole formed on the bottom surface of the second rising block (220).

[0072] In the present invention, the post (300) may be composed of multiple posts as needed.

[0073] For example, when configured to include a first post (310) and a second post (320), the first post (10) may be configured to have a hollow formed therein and to be fixed to the bottom surface of the fixed block (100).

[0074] And the second post (320) may be formed with a hollow, but formed larger than the diameter of the first post (310) so that the first post (310) is inserted into the interior of the second post (320). At this time, the second post (320) may be configured to be fixed to the bottom surface of the first rising block (210).

[0075] Additionally, a first post auxiliary module (311) and a second post auxiliary module (321) may be formed to wrap each of the first post (310) and the second post (320) as needed.

[0076] The first post auxiliary module (311) may be formed to surround the first post (310) at the bottom portion of the fixed block (100), and the second post auxiliary module (321) may be formed to surround the second post (320) at the bottom portion of the first rising block (200).

[0077] At this time, since the first rainwater flow hole (215) and the second rainwater flow hole (225) may be narrowed or blocked by the first post auxiliary module (311) and the second post auxiliary module (321), it is preferable to form a connecting hole (not shown) in each of the first post auxiliary module (311) and the second post auxiliary module (321) so that rainwater can move to the first rainwater flow hole (215) and the second rainwater flow hole (225).

[0078] FIGS. 9 and FIGS. 10 are drawings for explaining the operation of a rotary extension panel of a temporary rainwater storage device according to one embodiment of the present invention.

[0079] Referring to FIGS. 9 and 10, the temporary rainwater storage device according to the present invention further includes a rotatable extension panel (500) installed on the upper part of a second rising block (220), and the rotatable extension panel (500) is rotatably hinged to the second rising block (220) and may be configured to rotate as the second rising block (220) rises.

[0080] Additionally, the temporary rainwater storage device according to the present invention further includes a support panel (600) installed on the upper part of the first rising block (210), the support panel (600) is fixed to the upper part of the first rising block (210) to support a rotatable expansion panel (500), and can be configured so that the rotatable expansion panel (500) unfolds above the support panel (600) as the second rising block (220) rises.

[0081]

[0082] For example, as illustrated in FIG. 10, four rotational extension panels (500) can be installed rotatably by hinge-connecting them to the upper sides of each of the second rising blocks (220). Additionally, each of the four support panels (600) can be fixedly installed in a rectangular shape on the upper part of the first rising block (210). That is, the support panels (600) are fixed in shape on the upper part of the first rising block (210), and the rotational extension panels (500) are installed rotatably on the upper part of the second rising block (220).

[0083] Accordingly, before the second rising block (220) rises, the rotational expansion panel (500) can be supported by the support panel (600), and as the second rising block (220) rises, the rotational expansion panel (500) operates to unfold above the support panel (600).

[0084] With this configuration, the area for collecting rainwater can be gradually increased, allowing for the collection of more rainwater per unit of time. By improving the efficiency of rainwater collection during heavy rainfall, damage caused by rainwater can be minimized.

[0085] As such, the temporary rainwater storage device according to the present invention has a relatively small initial size, so it can be installed in urban areas, near roads or buildings, and in the event of heavy rain, it can increase its volume on its own to store a large amount of rainwater.

[0086] In particular, if the temporary rainwater storage device according to the present invention is installed in an area where flood damage is expected (e.g., a sloped area or a low-lying area), it has the advantage of being able to be utilized as a type of water barrier by taking advantage of the characteristic that it rises on its own during heavy rain.

[0087] Furthermore, multiple temporary rainwater storage units can be connected via hoses or pipelines for sharing, and can be utilized as an emergency drainage system installed in water-scarce areas to use the stored rainwater. For example, it can be used as an emergency drainage system in urban areas, or installed in farmlands to prevent heavy rainfall while allowing the stored rainwater to be recycled as agricultural water.

[0088] It should be made clear that the above embodiments are merely illustrative and not limiting, and that modifications to components that can be equivalently substituted within the scope of the technical spirit or field of the present invention provided by the following claims are considered to be within the scope of the present invention.

Claims

1. A fixed block positioned at the lowest side, with an empty interior so that rainwater flowing in from the outside fills the interior; At least one rising block formed with an empty interior so that when the interior of the fixed block is filled with rainwater while in a state of being inserted into the fixed block, it is drawn out in the upward direction of the fixed block by buoyancy to rise to a certain height, and the interior is filled with rainwater flowing in from the upper side; A sealing cover formed on the upper part of the above-mentioned rising block; Includes an opening / closing cover formed on a part of the above-mentioned sealing cover; A temporary rainwater storage device characterized by the fact that as water flows in through the above-mentioned opening / closing cover, the above-mentioned at least one rising block rises due to buoyancy.

2. In Paragraph 1, The above-mentioned rising blocks are formed in multiple numbers, and A first rising block formed with an empty interior so that when the interior of the fixed block is filled with rainwater while in a state of being inserted into the fixed block, it is drawn out in the upward direction of the fixed block by buoyancy to rise to a certain height, and the interior is filled with rainwater flowing in from the upper side; A temporary rainwater storage device characterized by including: a second rising block that is drawn out in the upward direction of the first rising block by buoyancy and rises to a certain height when the interior of the first rising block is filled with rainwater while being inserted into the first rising block.

3. In Paragraph 2, The above fixed block has an open top surface, and A temporary rainwater storage device characterized by having a connecting opening formed on at least one side to allow rainwater to move.

4. In Paragraph 3, The above-mentioned first rising block is It is installed by being inserted into the open upper surface of the above fixed block, and A first rainwater flow hole is formed in a part of the bottom surface, and A rainwater storage device characterized by being configured to allow rainwater to move through the first rainwater movement hole.

5. In Paragraph 4, The above second rising block is It is installed by being inserted into the open upper surface of the first rising block, and A second rainwater drainage hole is formed in a part of the bottom surface, and A rainwater storage device characterized by being configured to allow rainwater to move through the second rainwater movement hole.

6. In Paragraph 4, It includes a post that is installed facing upward from the bottom surface of the above-mentioned fixed block and has a hollow formed therein, The above post is formed to penetrate the first rainwater movement hole formed on the bottom surface of the first rising block, and A temporary rainwater storage device characterized by the fact that the size of the first rainwater movement hole formed on the bottom surface of the first rising block is formed to be larger than the cross-sectional size of the post, so that rainwater moves through the first rainwater movement hole formed on the bottom surface of the first rising block.

7. In Paragraph 5, It includes a post that is installed facing upward from the bottom surface of the above-mentioned fixed block and has a hollow formed therein, The above post is formed to penetrate the inlet hole formed on the bottom surface of the first rising block and the second rainwater movement hole formed on the bottom surface of the second rising block, and The size of the first rainwater flow hole formed on the bottom surface of the first rising block is formed to be larger than the cross-sectional size of the post, and the size of the second rainwater flow hole formed on the bottom surface of the second rising block is formed to be larger than the cross-sectional size of the post, A temporary rainwater storage device characterized by being configured to allow rainwater to move through the first rainwater moving hole and the second rainwater moving hole.

8. In Paragraph 5, An upper inlet hole is formed in a part of the above-mentioned sealing cover, and An opening / closing cover for opening and closing the upper inlet hole is formed, and The above opening / closing cover is coupled with an opening / closing means having a predetermined elasticity, and A temporary rainwater storage device characterized by the fact that when the force of rainwater directly pressing on the above-mentioned opening / closing cover is greater than a predetermined value, the above-mentioned opening / closing means operates to open the above-mentioned opening / closing cover, thereby allowing rainwater to flow in through the above-mentioned upper inlet hole.

9. In Paragraph 5, It further includes a rotatable extension panel installed on the upper part of the second rising block, and A temporary rainwater storage device characterized in that the above-described rotary extension panel is rotatably hinged to the above-described second rising block and rotates as the above-described second rising block rises.

10. In Paragraph 9, It further includes a support panel installed on the upper part of the first rising block, and The support panel is fixed to the upper part of the first rising block and supports the rotational extension panel, A temporary rainwater storage device characterized by being configured such that the rotational expansion panel unfolds above the support panel as the second rising block rises.

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