JP7846576B2 - Storage and drainage systems - Google Patents

Description

This invention relates to a storage device and a drainage system.

Conventionally, disaster-resistant toilet facilities like the one disclosed in Patent Document 1 have been provided. The disaster-resistant toilet facility in Patent Document 1 comprises a drain pipe, a vertical pipe connected to the drain pipe, a foundation block provided at the upper end of the vertical pipe, and a toilet stool permanently installed on the upper surface of the foundation block. Furthermore, the foundation block has a vertical pipe insertion recess formed in its bottom surface into which the upper end of the vertical pipe is inserted, and a waste disposal hole formed connecting the top surface and the vertical pipe insertion recess. The disaster-resistant toilet facility in Patent Document 1 is configured such that the upstream end of the drain pipe buried underground is connected to a water supply manhole, and the other end is connected to an existing manhole connected to the main sewer line.

Japanese Patent Publication No. 2015-062609

However, the disaster-resistant toilet system described in Patent Document 1 has a configuration in which, in addition to a drain pipe arranged to form a predetermined slope relative to the horizontal, a water supply manhole for supplying water for flushing to the drain pipe is also buried underground. Therefore, the disaster-resistant toilet system in Patent Document 1 has the problem that the construction for installing the water supply manhole is time-consuming. Furthermore, because the disaster-resistant toilet system in Patent Document 1 has the water supply manhole buried underground together with the drain pipe, there is a problem in that it is difficult to supply water forcefully from the water supply manhole to the drain pipe. In the case of a configuration like that in Patent Document 1, in order to ensure that the water supplied from the water supply manhole flows forcefully in the drain pipe, measures such as increasing the slope of the drain pipe underground must be taken. Therefore, when attempting to install the disaster-resistant toilet system in Patent Document 1 using existing pipelines, there is a problem in that it is difficult to forcefully discharge water into the pipelines such as drain pipes.

Therefore, the present invention aims to provide a storage device that can be easily installed using existing pipelines and that can discharge water forcefully into the pipeline, as well as a drainage system equipped with such a storage device.

(1) The present invention, provided to solve the above-mentioned problems, is a storage device that is buried underground and connected to an existing pipeline comprising a main pipe through which wastewater flows, and a riser pipe erected to communicate with the main pipe. The storage device comprises a storage section capable of storing water, a discharge section for discharging the water stored in the storage section, and a plug section capable of opening and closing the discharge section, wherein the discharge section is connectable to an opening provided at the upper end of the riser pipe.

The storage device of the present invention can be installed by connecting the discharge section to an opening provided at the upper end of a riser pipe in an existing pipeline. Therefore, the storage device of the present invention can be easily installed by utilizing existing pipelines. Furthermore, the storage device of the present invention stores water in the storage section above the pipeline, and, when necessary, the stored water can be discharged towards the main pipe via the riser pipe by opening the discharge section. Therefore, the storage device of the present invention can forcefully discharge water into the pipeline by opening and closing the discharge section with the plug.

(2) The storage device of the present invention is preferably characterized by having an overhang portion formed to protrude outward from the storage portion, and by the overhang portion contacting the installation surface on which the storage portion is installed when the storage portion is installed.

By adopting this configuration, the storage device of the present invention allows the storage section to be stably installed on the installation surface.

(3) The storage device of the present invention is characterized in that the plug is located inside the storage section and can open and close the discharge section by moving it in a predetermined direction, and has an operating section connected to the plug and extended to the outside of the storage section, allowing the plug to be moved in a predetermined direction and the discharge section to be opened and closed by operating the operating section from the outside of the storage section.

The storage device of the present invention, with this configuration, allows for easy operation of the plug located inside the storage section by operating an operating section on the outside of the storage section, thereby opening and closing the discharge section.

(4) The storage device of the present invention is preferably characterized by having a discharge section at the bottom of the storage section.

By adopting this configuration, the storage device of the present invention can utilize hydrostatic pressure to forcefully discharge water into the pipeline.

(5) The storage device of the present invention is preferably characterized in that the bottom of the storage section is formed to have a downward slope toward the discharge section.

By adopting this configuration, the storage device of the present invention allows water stored in the storage section to flow more easily toward the discharge section when the discharge section is opened. As a result, the storage device of the present invention can discharge water more smoothly and forcefully toward the pipeline.

(6) The storage device of the present invention is characterized in that the discharge section has a cylindrical discharge pipe with a discharge port opening inside the storage section, and the plug section has a first plug component that can enter the inside of the discharge pipe from the discharge port, and a second plug component that is prevented from entering the discharge pipe from the discharge port on the side of the direction of entry from the discharge port to the inside of the discharge pipe relative to the first plug component, and the discharge section can be opened and closed by entering and detaching the first plug component from the discharge pipe.

In the storage device of the present invention, when the discharge section is closed, the first stopper component, which forms the stopper, enters the discharge pipe, while the second stopper component, which is located on the near side of the first stopper component in the direction of entry, does not enter the discharge pipe. Therefore, the storage device of the present invention can prevent the stopper from entering the discharge pipe excessively when the discharge section is closed. This prevents the stopper from penetrating the discharge section and falling out, and prevents the stopper from becoming difficult to detach from the discharge section when opening the discharge section again.

(7) The drainage system of the present invention comprises a storage device equipped with a storage section capable of storing water, a discharge section for discharging the water stored in the storage section, and a plug section that can open and close the discharge section; a pipeline equipped with a main pipe through which wastewater flows underground, and a riser pipe erected to communicate with the main pipe and having an opening facing upward; and is characterized in that the storage device is installed above ground and the discharge section is connected to the opening of the riser pipe, thereby enabling the water stored in the storage section to be discharged to the main pipe via the riser pipe.

The drainage system of the present invention can be installed by connecting the discharge section of a storage device to an opening provided at the upper end of a riser pipe in an existing pipeline. Furthermore, when the drainage system of the present invention is installed in an existing pipeline, water can be stored in the storage section with the discharge section closed by a plug. By opening the discharge section as needed, the water stored above the pipeline can be discharged through the riser pipe towards the main pipe. Therefore, the drainage system of the present invention can be easily installed using existing pipelines, and water can be forcefully discharged into the pipeline by a simple operation of opening and closing the discharge section with a plug.

(8) The drainage system of the present invention has a cover that is fitted to an opening, and the cover comprises a cover frame provided at the opening of the riser pipe, a main cover body fitted into the cover frame and having a fitting hole formed therethrough vertically, and a main cover having a main cover discharge pipe extending downward from the main cover body, and a sub-cover fitted into the fitting hole, wherein the discharge part is connected to the opening by removing the sub-cover and connecting the discharge part to the fitting hole.

The drainage system of the present invention utilizes a lid of the so-called parent-child lid type, which includes a parent lid and a child lid. It can be installed by connecting the discharge section to a fitting hole formed by removing the child lid. This allows for stable installation of the drainage system of the present invention. Furthermore, because the drainage system of the present invention is installed by connecting the discharge section of a storage device to the parent-child lid type lid, odor leakage can be suppressed.

(9) The drainage system of the present invention is preferably characterized in that it has a water guide device arranged in the riser pipe and introducing water discharged from the discharge section of the storage device into the main pipe, wherein the water guide device has an inlet section that receives water discharged from the discharge section, a pipeline section through which the water flowing in from the inlet section flows, and an outlet section that discharges water from the pipeline section, and the pipe axis of the outlet section is inclined toward the main pipe side than the pipe axis of the inlet section.

The drainage system of the present invention, by providing the above-described water guide device inside the riser pipe, can receive water discharged from the discharge section of the storage device at the inlet section and discharge it towards the main pipe via the pipeline section and outlet section. Furthermore, since the pipe axis of the outlet section of the drainage system of the present invention is tilted toward the main pipe than the pipe axis of the inlet section, the water flow from the storage device into the water guide device can be smoothly introduced into the main pipe in a direction aligned with the main pipe. Therefore, the drainage system of the present invention can forcefully direct water discharged from the storage device into the main pipe via the water guide device, further improving the cleaning capacity of the main pipe.

(10) The drainage system of the present invention is preferably characterized in that a temporary drainage facility can be connected to the opening of the riser pipe, and the storage device is connected to the opening of the riser pipe adjacent to the riser pipe upstream of the riser pipe to which the temporary drainage facility is connected.

The drainage system of the present invention, with this configuration, allows water to be discharged from a storage device located upstream of the temporary drainage facility, thereby enabling the water to reach the corresponding position in the main pipe with sufficient force. Therefore, according to the drainage system of the present invention, wastewater and debris discharged from the temporary drainage facility into the main pipe can be washed by water discharged from the storage device located upstream of the temporary drainage facility and flowing rapidly downstream of the main pipe.

(11) The drainage system of the present invention is preferably characterized in that a plurality of risers are provided, the temporary drainage equipment is connected to the opening of some of the risers, and the storage device, which is provided in conjunction with the temporary drainage equipment, is connected to the opening of a riser that is located adjacent to the main pipe on the upstream side of the riser to which the temporary drainage equipment is connected.

As described above, the drainage system of the present invention, by installing a storage device paired with the temporary drainage equipment in a riser adjacent to the upstream side of the main pipe, can more reliably and forcefully deliver water to the position in the main pipe corresponding to the temporary drainage equipment. Therefore, according to the drainage system of the present invention, wastewater and debris discharged from the temporary drainage equipment into the main pipe can be more reliably and forcefully pushed downstream of the main pipe for cleaning.

According to the present invention, it is possible to provide a storage device that can be easily installed using existing pipelines and that can forcefully discharge water into the pipeline, as well as a drainage system equipped with the storage device.

This is a schematic diagram showing a drainage system relating to one embodiment of the present invention. This is a cross-sectional view showing a storage device according to one embodiment of the present invention installed. This is an enlarged view of the main part of Figure 2. Figure 2 is a perspective view showing the installation method of the storage device in a step-by-step manner. This is a schematic diagram showing a modified drainage system. This is a cross-sectional view showing a modified installation configuration of a storage device according to one embodiment of the present invention. This is an enlarged cross-sectional view of the main part of a drainage system according to a first modified example equipped with a water intake device. This is an enlarged cross-sectional view of the main part of a drainage system according to a second modified example equipped with a water intake device.

The following description will detail a storage device 10 and a drainage system S according to one embodiment of the present invention, with reference to the drawings. In the following description, the pipeline 100 constituting the drainage system S will be briefly described first, followed by a detailed description of the configuration of the storage device 10 connected to the pipeline 100. Furthermore, unless otherwise specified, the positional relationships (up, down, left, right, etc.) of the storage device 10 and the drainage system S will be described based on their installation in a manner suitable for normal use.

≪Overview of Drainage System S≫

The drainage system S shown in Figure 1 discharges wastewater from the drainage facility 3 downstream to the main sewer pipe 4, etc. Specifically, when the water supply to the drainage facility 3 is functioning (water supply function) and the drainage to the main sewer pipe 4 is functioning (drainage function), the drainage system S can discharge wastewater from the drainage facility 3 downstream to the main sewer pipe 4, etc. Furthermore, when the water supply to the drainage facility 3 is interrupted due to a disaster such as an earthquake (water outage) and the water supply to the drainage facility 3 is not functioning, or when the water supply function is insufficient due to the installation of temporary toilets, etc., in outdoor areas where the water supply facilities are inadequate (water supply failure), the drainage system S can supply stored water to the pipeline 100, described later, and discharge the wastewater downstream. In addition, when the drainage system S is unable to drain wastewater into the main sewer pipe 4, etc., due to damage to a part of the main sewer pipe 4 or pipeline 100, the drainage system S can discharge the wastewater into the wastewater storage tank 190. In other words, in the event of a water supply failure and a drainage failure (when water supply and drainage are impossible), the drainage system S can supply stored water to discharge wastewater into the pipeline 100 while simultaneously discharging wastewater from the drainage facility 3 towards the wastewater storage tank 190.

Here, the main sewer pipe 4 is a pipe that carries wastewater to a wastewater treatment plant (not shown). Wastewater flowing out of the drainage facilities 3 of building 1 is normally discharged into the main sewer pipe 4. The aforementioned drainage facilities are those that discharge wastewater. Examples of drainage facilities include toilets, bathrooms, and kitchen sinks. Furthermore, the drainage facilities installed in the drainage system S include existing drainage facilities (existing drainage facilities 3a) such as toilets and bathrooms already installed in building 1, as well as temporary drainage facilities (temporary drainage facilities 3b) such as temporary toilets. Building 1 includes residences, commercial facilities, factories, school buildings, warehouses, etc.

Regarding pipeline 100:

As shown in Figure 1, the pipeline 100 has a main pipe 110 and a riser pipe 120, forming a passage for water to circulate underground. In this embodiment, the pipeline 100 is connected by multiple pipes and fittings to form a drainage channel C, which serves as a flow path for wastewater.

In pipeline 100, the main pipe 110 constitutes a flow path extending from the upstream side to the downstream side (towards the main sewer pipe 4). While the main pipe 110 may consist of a single pipe, in this embodiment it comprises a first pipe 110a and a second pipe 110b. Furthermore, multiple risers 120 are provided in pipeline 100. A storage device 10, which will be described in detail later, is connected to pipeline 100, and a switchable drainage manhole 150 and a backflow prevention manhole 170 are also arranged therein.

The first pipeline 110a is provided to lead from the storage device 10 to the main sewer pipe 4. The second pipeline 110b is provided to lead from the switchable drainage manhole 150 to the wastewater storage tank 190. The main pipe 110, through the first pipeline 110a and the second pipeline 110b, can form two systems as wastewater drainage channels C. Specifically, the main pipe 110 can form a first channel c1 that drains wastewater into the main sewer pipe 4 via the first pipeline 110a, and a second channel c2 that discharges wastewater into the wastewater storage tank 190 via the second pipeline 110b.

In other words, the main pipe 110 can form a first drainage channel c1, which is a normal drainage channel C for discharging wastewater into the main sewer pipe 4 via the first channel c1. Furthermore, the main pipe 110 can form a second drainage channel c2, which discharges wastewater into the wastewater storage tank 190, as a drainage channel C for use when discharge is impossible, such as in the event of damage to the main sewer pipe 4 or the first pipe 110a downstream of the branching point with the second pipe 110b, where there is a risk of wastewater flowing upstream.

The riser pipe 120, like the main pipe 110, constitutes the pipeline 100. The riser pipe 120 is erected to communicate with the piping that makes up the main pipe 110. For example, the riser pipe 120 is connected to the main pipe 110 via a drainage manhole 147 provided in the pipeline 100 and is erected towards the ground. Note that the riser pipe 120 may be connected to the pipeline 100 via a joint, in addition to being installed in the drainage manhole. Furthermore, various types of drainage manholes can be selected, such as sewage manholes or rainwater manholes, to which the riser pipe 120 is installed.

The riser pipe 120 is a pipe buried underground. The lower end of the riser pipe 120 is connected to the first pipeline 110a, and it is erected so as to extend towards the ground. The riser pipe 120 has an opening 122 at its upper end. The opening 122 functions as an inspection port for inspecting the inside of the pipeline 100 from the ground surface. Under normal circumstances, other than during disasters, the opening 122 is closed by a cover 130. In situations where temporary drainage equipment 3b is installed, such as during a disaster, the cover 130 can be removed, as shown in Figure 1, allowing the temporary drainage equipment 3b to be attached to the upper end of the riser pipe 120.

In Figure 1, an example is shown where the temporary drainage system 3b is installed on a riser pipe 120 located downstream of the existing drainage system 3a. However, the temporary drainage system 3b may also be installed on a riser pipe 120 located upstream of the existing drainage system 3a. For example, if a riser pipe 120 is located upstream of the existing drainage system 3a and downstream of the storage device 10, the temporary drainage system 3b may be installed on that riser pipe 120.

The cover 130 is fitted into the opening 122 of the riser pipe 120, thereby closing the upper end of the riser pipe 120. The shape and material of the cover 130 can be appropriately selected, as long as it can close the opening 122. In this embodiment, the cover 130 is a so-called parent-child cover. Specifically, as shown in Figures 2 and 3, the cover 130 comprises a cover frame 132, a parent cover 134, and a child cover 136.

The main cover 134 has a main cover body 138 and a cylindrical portion 142. The main cover body 138 is the portion that fits onto the cover frame 132. The main cover body 138 has a fitting hole 140 that penetrates vertically. An annular main cover sealing member 138a is attached to the main cover body 138, which contacts the cover frame 132 when the main cover 134 is fitted onto the cover frame 132. This configuration improves the sealing performance when the main cover 134 is fitted onto the cover frame 132.

The cylindrical portion 142 is a cylindrical part that extends downward from the main lid body 138. The cylindrical portion 142 is provided on the main lid body 138 so as to surround the fitting hole 140 when viewed from the bottom. In this embodiment, the cylindrical portion 142 extends downward from the edge of the fitting hole 140 in the main lid body 138. One or more slits may be formed in the cylindrical portion 142. Furthermore, in this embodiment, the main lid body 138 and the cylindrical portion 142 are integrally molded, but they may be separate parts.

The sub-cover 136 is a cover member that fits into a fitting hole 140 formed in the main cover body 138 of the main cover 134. The sub-cover 136 has a shape corresponding to the fitting hole 140. In this embodiment, since the fitting hole 140 is a circular opening, the sub-cover 136 is disc-shaped. The sub-cover 136 is fitted with an annular sub-cover sealing member (not shown) that contacts the main cover body 138 when the sub-cover 136 is fitted onto the main cover 134, thus improving the sealing performance when the sub-cover 136 is fitted onto the main cover 134.

Regarding the storage device 10:

As shown in Figure 1, the storage device 10 is connected to the pipeline 100 that constitutes the drainage channel through which wastewater flows. While the aforementioned pipeline 100 is buried underground, the storage device 10 is installed above ground. As shown in Figures 2 and 3, the storage device 10 has a storage section 20, an extension section 30, a discharge section 40, a plug section 50, and an operating section 60.

The storage section 20 has an internal storage space capable of storing water. The storage section 20 can be constructed by selecting appropriate sizes, shapes, materials, etc. For example, the storage section 20 may be made by molding a resin material such as polyvinyl chloride resin, polypropylene resin, or fiber-reinforced plastic. Furthermore, when the storage section 20 is constructed from polyvinyl chloride resin, rigid polyvinyl chloride resin is preferably used.

The storage section 20 is a bottomed cylindrical shape with an open upper end and a bottom 22 at the lower end. The bottom 22 of the storage section 20 has an outlet 42 for the discharge section 40, which will be described in detail later. The discharge outlet 42 of the storage section 20 may be located anywhere on the bottom 22, but in this embodiment, it is positioned to open approximately in the center of the bottom 22 (approximately at the axial center of the storage section 20). The bottom 22 is formed to slope downwards towards the discharge outlet 42. Therefore, the bottom 22 of the storage section 20 is formed in a mortar-like (tapered) shape.

The overhang portion 30 is a part that extends outward from the outer circumferential surface of the storage portion 20. When the storage portion 20 is installed, the overhang portion 30 extends so as to contact the installation surface (in this embodiment, the ground) on which the storage portion 20 is installed. This allows the storage device 10 to stably install the storage portion 20 on the installation surface using the overhang portion 30. The overhang portion 30 may be, for example, leg-shaped structures provided at predetermined intervals in the circumferential direction of the storage portion 20, but in this embodiment, it is a flange-shaped structure provided around substantially the entire circumference of the storage portion 20. This allows the overhang portion 30 to stably support the storage portion 20 around its entire circumference.

The discharge section 40 is for discharging the water stored in the storage section 20. The discharge section 40 is connected to an opening 122 provided at the upper end of the riser pipe 120. The discharge section 40 is located at the bottom 22 of the storage section 20. The discharge section 40 has a discharge pipe 44 with a discharge port 42 that opens inside the storage section 20. As described above, the discharge port 42 is formed to open at the bottom 22 of the storage section 20.

The discharge pipe 44 is a cylindrical portion formed to protrude further downward from the discharge port 42 of the storage section 20. The discharge pipe 44 (discharge section 40) may be formed as a separate component from the storage section 20 and attached to it; however, in this embodiment, it is integrally formed with the storage section 20. The discharge pipe 44 is formed to protrude further downward than the bottom 22 of the storage section 20 and the lower end of the overhang 30. Therefore, when the storage section 20 is installed on the installation surface (ground), the discharge pipe 44 is formed to reach below the installation surface.

The discharge section 40 is formed by a cylindrical body sized to fit into the opening 122 of the riser pipe 120 described above. In this embodiment, the size (outer diameter) of the discharge section 40 is set to match the size of the fitting hole 140 that opens when the sub-lid 136 of the cover 130 provided at the opening 122 of the riser pipe 120 is removed. Therefore, the storage device 10 can be connected to the opening 122 of the riser pipe 120 by removing the sub-lid 136 of the cover 130 provided at the opening 122 of the riser pipe 120 and inserting the cylindrical body forming the discharge section 40 into the fitting hole 140 to establish communication.

The plug portion 50 is for opening and closing the discharge portion 40. The plug portion 50 is located inside the storage portion 20. The plug portion 50 can open and close the discharge portion 40 by moving in a predetermined direction (axial direction of the storage portion 20, vertical direction). The plug portion 50 has a first plug component 52 and a second plug component 54.

The first plug component 52 is the part that can enter the inside of the discharge cylinder 44 from the discharge port 42. The first plug component 52 can open and close the discharge section 40 by entering and exiting the discharge cylinder 44. The second plug component 54 is located on the side of the first plug component 52 that enters the inside of the discharge cylinder 44 from the discharge port 42. The second plug component 54 is the part that cannot enter the discharge cylinder 44 from the discharge port 42. The second plug component 54 is intended to prevent the plug portion 50 from entering the discharge cylinder 44 excessively. The second plug component 54 can be formed, for example, by providing a bulge that is larger than the first plug component 52.

In this embodiment, the plug portion 50 is provided with a connecting member 68 for connecting the operating portion 60 (described in detail later) to the bottomed cylindrical plug component 56, thereby providing a second plug component 54 in addition to the first plug component 52.

Specifically, the plug portion 50 is designed to enter the discharge pipe 44 with the closed bottom portion of the plug component 56 leading. The plug component 56 is formed so that its outer diameter approximately matches the inner diameter of the discharge pipe 44. The first plug component 52 is composed of the leading portion (bottom portion) of the plug component 56 in the direction of entry into the discharge pipe 44. A plug sealing member 58 is provided around the entire circumference of the portion of the plug portion 50 corresponding to the first plug component 52. This ensures high sealing performance when the first plug component 52 of the plug portion 50 enters the discharge pipe 44, reliably preventing water from being discharged through the discharge section 40.

The second plug component 54 is provided on the side of the plug 50 that is in the direction of entry (upward in the illustrated example) relative to the first plug component 52. The second plug component 54 has a portion that bulges outward from the plug component 56 by providing a connecting member 68 for connecting the operating part 60 to the plug component 56. Specifically, the second plug component 54 is provided with a bolt 68a, which is provided as a connecting member 68, so as to penetrate the plug component 56 radially. Therefore, on one radial side of the plug component 56, the head of the bolt 68a is provided so as to bulge outward from the plug component 56. Also, on the other radial side of the plug component 56, a nut 68b is attached to the shaft of the bolt 68a. As a result, the nut 68b is provided so as to bulge outward on the other radial side of the plug component 56. The second plug component 54 has a bulge formed by the head of the bolt 68a and the nut 68b, preventing it from entering the discharge pipe 44 from the discharge port 42. Therefore, while the portion of the plug 50 corresponding to the first plug component 52 can enter the discharge pipe 44 via the discharge port 42, the portion corresponding to the second plug component 54 is blocked, preventing it from entering the discharge pipe 44 excessively.

The operating unit 60 is provided to enable a switching operation to change the open/closed state of the discharge unit 40 by moving the plug 50 through operation from outside the storage unit 20. In this embodiment, since the discharge unit 40 can be opened and closed by the vertical movement of the plug 50, the operating unit 60 is designed to be able to displace the plug 50 in the vertical direction. The operating unit 60 is connected to the plug 50 and extends outside the storage unit 20. The operating unit 60 can move the plug 50 in a predetermined direction and open/close the discharge unit 40 by operation from outside the storage unit 20. Specifically, the operating unit 60 has an operating rod 62, a gripping part 64, and a connecting part 66.

The operating rod 62 is a component composed of rod-shaped or cylindrical members. When the plug 50 is positioned inside the storage section 20, the operating rod 62 has a length that protrudes above the upper end of the storage section 20.

The gripping portion 64 is provided on the upper end side of the operating rod 62. The gripping portion 64 is designed to be easily grasped by the user when operating the stopper portion 50 with the operating portion 60. The shape and size of the gripping portion 64 can be appropriately configured to ensure it is easy for the user to grasp. In this embodiment, the gripping portion 64 is composed of a rod-shaped or cylindrical member extending in a direction intersecting the axial direction of the operating rod 62 (approximately perpendicular in the illustrated example).

The connecting portion 66 is the part that connects to the plug portion 50. The connecting portion 66 is provided on the lower end side of the operating rod 62. The connecting portion 66 is composed of a cylindrical member that extends in a direction intersecting the axial direction of the operating rod 62 (in the illustrated example, a direction approximately perpendicular). The connecting portion 66 also has a length that can be accommodated inside the plug component 56 that makes up the plug portion 50. The connecting portion 66 is designed so that a bolt 68a, which makes up a connecting member 68 that connects the operating portion 60 and the plug portion 50, can be inserted through it. The operating portion 60 is connected to the plug portion 50 via the connecting portion 66 which is located inside the plug component 56 that makes up the plug portion 50. Specifically, the bolt 68a is installed so as to pass through the inside of the connecting portion 66 located inside the plug component 56 and cross the plug component 56 of the plug portion 50. Furthermore, a nut 68b is attached to the shaft portion of the bolt 68a outside the plug component 56. In this way, the operating portion 60 is connected to the plug portion 50.

≪About Drainage System S≫

The drainage system S is constructed by installing the aforementioned storage device 10 in the existing pipeline 100. Specifically, the drainage system S installs the storage device 10 above ground and connects the discharge section 40 to the opening 122 of the riser pipe 120, thereby allowing the water stored in the storage section 20 to be discharged to the main pipe 110 via the riser pipe 120.

When constructing the drainage system S by installing the storage device 10 in relation to the pipeline 100, first, as shown in Figure 4(a), the sub-lid 136 is removed from the cover 130 that is closing the opening 122 at the upper end of the riser pipe 120. This leaves the fitting hole 140 open at the upper end of the riser pipe 120, as shown in Figure 4(b). Then, by inserting the discharge pipe 44 of the discharge section 40 into the fitting hole 140, the storage section 20 is positioned on the installation surface (ground), as shown in Figure 4(c). By installing the storage section 20 so that the protruding section 30 contacts the installation surface, the storage section 20 can be installed stably.

As described above, with the storage section 20 installed, the drainage system S, as shown in Figure 4(c), allows the plug 50 to enter the discharge pipe 44 from the discharge port 42 of the discharge section 40. This closes the discharge port 42, allowing water to be stored in the storage section 20. Furthermore, when discharging water from the storage device 10 to the pipeline 100 for cleaning, as shown in Figure 4(d), the plug 50 is retracted from the discharge pipe 44 by moving the operating unit 60 upward. This opens the discharge port 42 of the storage device 10, allowing the water stored in the storage section 20 to be discharged to the main pipe 110 via the riser pipe 120. Additionally, because the bottom 22 of the storage section 20 slopes downward towards the discharge pipe 44, almost the entire amount of water stored in the storage section 20 is smoothly discharged.

<<Regarding the effects of the storage device 10 and the drainage system S>>

The storage device 10 and the drainage system S equipped therewith have the following characteristic configurations (1) to (8), and therefore can achieve unique effects that cannot be attained by conventional technology, as described below.

(1) The storage device 10 described above is a storage device 10 connected to an existing pipeline 100 that is buried underground and has a main pipe 110 through which wastewater flows, and a riser pipe 120 erected to communicate with the main pipe 110. The storage device 10 has a storage section 20 capable of storing water, a discharge section 40 for discharging the water stored in the storage section 20, and a plug section 50 that can open and close the discharge section 40. The discharge section 40 is connectable to an opening 122 provided at the upper end of the riser pipe 120.

Since the storage device 10 has the configuration described in (1) above, it can be installed by connecting the discharge section 40 to the opening 122 provided at the upper end of the riser pipe 120 of the existing pipeline 100. Therefore, the storage device 10 can be easily installed by utilizing the existing pipeline 100. Furthermore, when the storage device 10 is installed in relation to the existing pipeline 100, with the discharge section 40 closed by the plug 50, water is stored in the storage section 20 located above the pipeline 100. By opening the discharge section 40 as needed, the stored water can be discharged towards the main pipe 110 via the riser pipe 120. Therefore, the storage device 10 can forcefully discharge water into the pipeline 100 with a simple operation of opening and closing the discharge section 40 using the plug 50.

(2) The storage device 10 described above has an overhang portion 30 that extends outward from the storage section 20, and when the storage section 20 is installed, the overhang portion 30 is in contact with the installation surface on which the storage section 20 is installed.

Since the storage device 10 has the configuration described in (2) above, the storage section 20 can be stably installed on the installation surface.

(3) The storage device 10 described above has a plug 50 positioned inside the storage unit 20, which can open and close the discharge unit 40 by moving in a predetermined direction. It also has an operating unit 60 connected to the plug 50 and extended outside the storage unit 20. By operating the operating unit 60 from outside the storage unit 20, the plug 50 can be moved in a predetermined direction, thereby opening and closing the discharge unit 40.

Since the storage device 10 has the configuration described in (3) above, the plug 50 located inside the storage section 20 can be easily operated by operating the operating section 60 located outside the storage section 20, thereby opening and closing the discharge section 40.

(4) The storage device 10 described above is provided with a discharge section 40 at the bottom 22 of the storage section 20.

Since the storage device 10 has the configuration described in (4) above, it can use hydrostatic pressure to forcefully discharge water towards the pipeline 100.

(5) The storage device 10 described above is formed such that the bottom 22 of the storage section 20 slopes downward toward the discharge section 40.

Because the storage device 10 has the configuration described in (5) above, when the discharge section 40 is opened, the water stored in the storage section 20 flows more easily towards the discharge section 40. As a result, the storage device 10 can discharge water more smoothly and forcefully towards the pipeline 100.

(6) The storage device 10 described above has a discharge section 40 which has a cylindrical discharge pipe 44 with a discharge port 42 that opens inside the storage section 20, and a plug section 50 which has a first plug component 52 that can enter the inside of the discharge pipe 44 from the discharge port 42, and a second plug component 54 that is prevented from entering the discharge pipe 44 from the discharge port 42 on the side of the direction of entry from the discharge port 42 to the inside of the discharge pipe 44 relative to the first plug component 52. The discharge section 40 can be opened and closed by moving the first plug component 52 in and out of the discharge pipe 44.

Because the storage device 10 has the configuration described in (6) above, when the discharge section 40 is closed, the first plug component 52, which forms the plug 50, enters the discharge pipe 44, while the second plug component 54, which is located on the near side of the first plug component 52 in the direction of entry, does not enter the discharge pipe 44. Therefore, the storage device 10 of the present invention can prevent the plug 50 from entering the discharge pipe 44 excessively when the discharge section 40 is closed. This prevents the plug 50 from penetrating the discharge section 40 and falling out, and prevents the plug 50 from becoming difficult to detach from the discharge section 40 when the discharge section 40 is opened again.

(7) The drainage system S described above comprises a storage device 10 equipped with a storage section 20 capable of storing water, a discharge section 40 for discharging the water stored in the storage section 20, and a plug section 50 that can open and close the discharge section 40; and a pipeline 100 equipped with a main pipe 110 through which wastewater flows underground, and a riser pipe 120 erected to communicate with the main pipe 110 and having an opening 122 that opens upward. By installing the storage device 10 above ground and connecting the discharge section 40 to the opening 122 of the riser pipe 120, the water stored in the storage section 20 can be discharged to the main pipe 110 via the riser pipe 120.

The drainage system S of this embodiment has the configuration described in (7) above, and can be installed by connecting the discharge section 40 of the storage device 10 to the opening 122 provided at the upper end of the riser pipe 120 of the existing pipeline 100. Furthermore, when the drainage system S is installed in relation to the existing pipeline 100, water is stored in the storage section 20 with the discharge section 40 closed by the plug 50. By opening the discharge section 40 as needed, the water stored above the pipeline 100 can be discharged towards the main pipe 110 via the riser pipe 120. Therefore, the drainage system S can be easily installed using the existing pipeline 100, and water can be forcefully discharged into the pipeline 100 by a simple operation of opening and closing the discharge section 40 with the plug 50.

(8) The drainage system S described above has a cover 130 that is fitted over the opening 122. The cover 130 comprises a cover frame 132 provided on the opening 122 of the riser pipe 120, a main cover body 138 that fits into the cover frame 132 and has a fitting hole 140 that penetrates vertically, a main cover 134 having a cylindrical portion 142 extending downward from the main cover body 138, and a sub-cover 136 that fits into the fitting hole 140. By removing the sub-cover 136 and connecting the discharge section 40 to the fitting hole 140, the discharge section 40 is connected to the opening 122.

Since the drainage system S has the configuration described in (8) above, it can be installed by utilizing a lid 130 of the so-called parent-child lid type, which includes a parent lid 134 and a child lid 136, and connecting the discharge section 40 to the fitting hole 140 formed by removing the child lid 136. This allows the drainage system S to be installed stably. Furthermore, since the drainage system S is installed by connecting the discharge section 40 of the storage device 10 to the parent-child lid type lid 130, odor leakage can be suppressed.

<<Variations>>

Furthermore, the storage device 10 and drainage system S described above are merely examples of one embodiment of the present invention, and their configurations can be modified as appropriate without departing from the spirit of the present invention. For example, the storage device 10 and drainage system S are not limited to those comprising all of the configurations described in (1) to (8) above; it is also possible to omit any of these configurations or substitute them with other configurations.

For example, the storage device of the present invention is not limited to the storage device 10 described above, but can also be, for example, the storage device 210 shown in Figure 5. The storage device 210 has a discharge section 240 located on the side of the storage section 220, on the bottom 222 side. The storage device 210 also has a plug section 250 that can open and close the discharge section 240.

The storage device 210, like the storage device 10, possesses the features described in (1) above. Specifically, the storage device 210 is connected to an existing pipeline 100, which is buried underground and includes a main pipe 110 through which wastewater flows, and a riser pipe 120 erected to communicate with the main pipe 110. It has a storage section 220 capable of storing water, a discharge section 240 for discharging the water stored in the storage section 220, and a plug section 250 for opening and closing the discharge section 240. The discharge section 240 is connectable to an opening 122 provided at the upper end of the riser pipe 120. With this configuration, as shown in Figure 5, by connecting the discharge section 240 and the opening 122 of the riser pipe 120 with piping 212, the water stored in the storage section 220 can be forcefully discharged above ground towards the underground pipeline 100 by simple operation of the plug section 250, similar to the storage device 10.

Furthermore, the storage device 210 should have a configuration similar to that of the storage device 10 described above. For example, as shown in Figure 5 with the same reference numerals as the storage device 10 described above, the storage device 210 should have a configuration similar to the storage device 10, such as a protruding portion 30, a bottom portion 222 that slopes downward toward the discharge portion 240, and a bulging portion, such as the second plug component 54, to prevent the plug portion 250 from excessively entering the discharge portion 240.

Furthermore, while the storage device 10 in the above embodiment is provided with an overhang 30 as described in (2) above, the present invention is not limited thereto. The storage device 10 can also be provided without the overhang 30. This simplifies the configuration of the storage device 10. Additionally, the storage device 10 can be provided with other configurations to improve the stability of the storage section 20, either in place of or in addition to the overhang 30.

The storage device 10 of the above embodiment can also be configured in a different way than the configuration described in (3) above, where the plug 50 located inside the storage section 20 is operated by an operating section 60 brought out to the outside of the storage section 20. For example, the storage device 10 can also be configured to have an opening/closing section, such as a valve that can control the discharge of water, located outside the storage section 20, and the discharge of water from the storage section 20 to the pipeline 100 can be controlled by operating this opening/closing section.

The storage device 10 in the above embodiment has a discharge section 40 at the bottom 22 of the storage section 20, as described in (4) above. However, it is also possible to configure the storage device 210 shown in Figure 5 above, with the discharge section 40 located at a part other than the bottom 22. Even when the storage device 10 allows water to be discharged from a location other than the bottom 22, it is preferable to configure the storage section 20 to allow water to be discharged from a position close to the bottom 22, in order to utilize hydrostatic pressure to forcefully discharge the water towards the pipeline 100.

The storage device 10 in the above embodiment is formed such that the bottom 22 of the storage section 20 slopes downward toward the discharge section 40, as described in (5) above. However, the present invention is not limited to this, and the bottom 22 can be provided in a substantially horizontal position, etc.

The storage device 10 in the above embodiment employs a plug portion 50 equipped with a first plug component 52 and a second plug component 54, as described in (6) above. However, the present invention is not limited to this, and it is also possible to omit a portion that cannot enter the discharge pipe 44, such as the second plug component 54. That is, in the storage device 10, a large pressure acts on the plug portion 50 in the direction of entry into the discharge pipe 44. However, in the modified storage device 210 shown in Figure 5, for example, the pressure is not large enough to act on the plug portion 50, and it is assumed that the possibility of the plug portion 250 excessively entering the discharge section 240 due to the pressure acting on the plug portion 250 is low. Therefore, in such cases, the configuration may be made without the second plug component 54.

The drainage system S of the above embodiment, as described in (7) above, has a storage device 10 installed on the ground and a discharge section 40 connected to the opening 122 of the riser pipe 120, thereby enabling the water stored in the storage section 20 to be discharged to the main pipe 110 via the riser pipe 120. However, the present invention is not limited to this. For example, the drainage system S may be equipped with a storage device 210 according to the modified example described above, instead of the storage device 10.

The drainage system S in the above embodiment utilizes a so-called parent-child lid type lid 130, which includes a parent lid 134 and a child lid 136, as described in (8) above, and allows the storage device 10 to be installed by removing the child lid 136. However, the present invention is not limited to this. The drainage system S may also be installed by connecting a discharge pipe 44 to the portion where the parent lid 134 was removed. Furthermore, the lid 130 attached to the opening 122 is not limited to the parent-child lid type. If a lid other than the parent-child lid type is used as the lid 130, the drainage system S can be constructed by connecting a discharge pipe 44 to the opening formed by removing the lid 130.

Furthermore, as shown in Figure 6, the drainage system S can be configured such that the storage device 10 is attached to a cover body 130 located below ground level, for example, by providing a protective cover 180. In the configuration shown in Figure 6, the storage device 10 is installed above the open protective cover 180, and the sub-cover 136 of the cover body 130 is removed. The fitting hole 140 and the discharge pipe 44 are then connected by a separately provided connecting pipe 46. Alternatively, instead of providing a connecting pipe 46, the discharge pipe 44 can be made longer from the outset to reach the fitting hole 140 of the cover body 130 located below the protective cover 180, thereby directly connecting the discharge pipe 44 to the fitting hole 140 without using the connecting pipe 46.

Furthermore, the drainage system S of the above embodiment can be equipped with a water guide device 300, as shown in Figure 7. Specifically, the water guide device 300 shown in Figure 7 introduces water discharged from the discharge sections 40 and 240 of the storage devices 10 and 210 into the main pipe 110. The water guide device 300 is a cylindrical member that can be placed inside the riser pipe 120. The water guide device 300 includes an inlet section 310, a pipeline section 320, and an outlet section 330.

The inlet 310 opens at one end of the water guide device 300. The inlet 310 is the part that receives water discharged from the discharge sections 40 and 240 of the storage devices 10 and 210. The inlet 310 is located inside the riser pipe 120, downstream of the discharge sections 40 and 240. A seal section 312 is provided on the outer surface of the water guide device 300. The seal section 312 is constructed, for example, by an O-ring. Furthermore, the outer diameter of the inlet 310 is approximately equal to the inner diameter of the riser pipe 120. Therefore, the inlet 310 is in close contact with the riser pipe 120 via the seal section 312.

The pipeline section 320 is located downstream (towards the main pipe 110) of the water supply device 300 relative to the inlet section 310. The portion of the pipeline section 320 following the inlet section 310 is a reduced-diameter section 322. The reduced-diameter section 322 is formed to decrease in diameter towards the downstream side, for example, by having a tapered shape as shown in the illustrated example. The pipeline section 320 may consist entirely of the reduced-diameter section 322, but in the illustrated example, the portion following the reduced-diameter section 322 has a cylindrical section 324 with a constant opening diameter. The inner diameter of the cylindrical section 324 is smaller than the inner diameter of the inlet section 310 and the riser pipe 120. Therefore, the pipeline section 320 can amplify the force of the water flowing in from the inlet section 310.

The outlet section 330 is an opening that allows water to flow out of the pipeline section 320. The outlet section 330 is positioned so that its pipe axis is tilted towards the main pipe 110 side compared to the pipe axis of the inlet section 310. The outlet section 330 is positioned so that its pipe axis direction faces downstream of the main pipe 110. The inner diameter and opening diameter of the outlet section 330 can be the same as or larger than the inner diameter of the pipeline section 320, but it is preferable to make them smaller than the inner diameter of the pipeline section 320. Making the inner diameter and opening diameter of the outlet section 330 smaller than the inner diameter of the pipeline section 320 can further increase the force of the water discharged from the outlet section 330.

The drainage system S equipped with the water guide device 300 described above is merely one example of the present invention. For example, the water guide device 350 shown in Figure 8 can be used instead of the water guide device 300. As indicated in Figure 8 with the same reference numerals as in Figure 7, the water guide device 350 has the same configuration for the inlet 310 and outlet 330, but differs in that the pipe section 320 consists only of a reduced-diameter section 322 and lacks a cylindrical section 324. This configuration is suitably used when conventional drainage manholes or switchable drainage manholes 150 are used as the riser pipe 120 for connecting the storage devices 10 and 210.

The drainage system S constructed using the aforementioned water intake devices 300 and 350 has the following characteristic configuration (9), and therefore can achieve unique effects that cannot be attained with conventional technology.

(9) The drainage system S illustrated in Figures 7 and 8 is characterized by having water guide devices 300 and 350 arranged within the riser pipe 120, which introduce water discharged from the discharge sections 40 and 240 of the storage devices 10 and 210 into the main pipe 110, an inlet 310 that receives water discharged from the water guide devices 300 and 350 and the discharge sections 40 and 240, a pipeline section 320 through which the water flowing in from the inlet 310 flows, and an outlet 330 that discharges water from the pipeline section 320, wherein the pipe axis of the outlet 330 is tilted toward the main pipe 110 side than the pipe axis of the inlet 310.

The drainage system S illustrated in Figures 7 and 8, by installing the aforementioned water guide devices 300 and 350 inside the riser pipe 120, can receive water discharged from the discharge sections 40 and 240 of the storage devices 10 and 210 at the inlet and discharge it towards the main pipe 110 via the pipeline section 320 and the outlet section 330. Furthermore, since the pipe axis of the outlet section 330 is tilted towards the main pipe 110 compared to the pipe axis of the inlet section 310, the water flowing from the storage devices 10 and 210 into the water guide devices 300 and 350 can be smoothly introduced into the main pipe 110 in a direction aligned with the main pipe 110. Therefore, this drainage system S can forcefully direct the water discharged from the storage devices 10 and 210 into the main pipe 110 via the water guide devices 300 and 350, further improving the cleaning capacity of the main pipe 110.

As shown in Figures 1 and 5, the drainage system S is configured such that storage devices 10 and 210 are installed in the vertical pipes 120 located upstream of the main pipe 110 (on the opposite side of the main sewer pipe 4) from the vertical pipes 120 that are connected to the opening 122 of the main pipe 110. Furthermore, when multiple temporary drainage facilities 3b are installed, the drainage system S is configured such that storage devices 10 and 210 corresponding to the temporary drainage facilities 3b are installed upstream (on the opposite side of the main sewer pipe 4) so that water can be discharged from the storage devices 10 and 210 located upstream of the temporary drainage facilities 3b that have discharged wastewater etc. toward the main pipe 110. Furthermore, while the examples shown in Figures 1 and 5 illustrate an example where multiple temporary drainage facilities 3b are provided for a single storage device 10, 210, the present invention is not limited to this. It is preferable to provide temporary drainage facilities 3b and storage devices 10, 210 in pairs, and connect the storage devices 10, 210 paired with the temporary drainage facilities 3b to the openings 122 of the risers 120, which are located adjacent to the upstream side of the main pipe 110 relative to the temporary drainage facilities 3b to which the storage devices 10, 210 are connected. In other words, it is preferable to provide the same number of storage devices 10, 210 as the number of temporary drainage facilities 3b, and connect the storage devices 10, 210 to the openings 122 of the risers 120, which are located adjacent to the upstream side of each temporary drainage facility 3b.

The drainage system S exemplified in the above embodiment, and the drainage system S exemplified as a modified example, have the following characteristic configurations as described in (10) or (11), and can therefore achieve unique effects that cannot be achieved with conventional technology.

(10) The drainage system S described above is characterized in that a temporary drainage facility 3b can be connected to the opening 122 of the riser pipe 120, and storage devices 10 and 210 are connected to the opening 122 of the riser pipe 120 adjacent to the riser pipe 120 on the upstream side of the riser pipe 120 to which the temporary drainage facility 3b is connected.

The drainage system S, with this configuration, can forcefully deliver water to the main pipe 110 at a position corresponding to the temporary drainage facility by discharging water from the storage devices 10 and 210 located upstream of the temporary drainage facility. Therefore, according to the drainage system S with the configuration described in (10) above, wastewater and debris discharged from the temporary drainage facility 3b into the main pipe 110 can be washed by water discharged from the storage devices 10 and 210 located upstream of the temporary drainage facility 3b and flowing forcefully downstream of the main pipe 110.

(11) The drainage system S described above is characterized by having multiple risers 120, with temporary drainage equipment 3b connected to the openings 122 of some of the risers 120, and storage devices 10 and 210, which are provided in conjunction with the temporary drainage equipment 3b, connected to the openings 122 of the risers 120 located upstream of the main pipe 110 to which the temporary drainage equipment 3b is connected.

The drainage system S, as described in (11) above, can more reliably and forcefully deliver water to the position corresponding to the temporary drainage equipment in the main pipe 110 by installing storage devices 10 and 210, which are paired with the temporary drainage equipment, on the riser pipe 120 located adjacent to the upstream side of the main pipe 110. Therefore, according to the drainage system S of the present invention, wastewater and debris discharged from the temporary drainage equipment into the main pipe 110 can be more reliably and forcefully pushed downstream of the main pipe 110 for cleaning.

The present invention is not limited to the embodiments and modifications described above, and other embodiments may exist in the spirit and nature of the teachings, without departing from the scope of the claims. The components of the embodiments described above may be arbitrarily selected and combined. Furthermore, any component of the embodiments may be arbitrarily combined with any component described in the means for solving the problem, or any component that embodies any component described in the means for solving the problem. We intend to obtain rights to these as well through amendments or divisional applications of this application.

This invention can be suitably used in drainage systems for discharging wastewater and in storage devices that constitute such systems.

10 Storage device 20 Storage section 22 Bottom section 30 Protruding section 40 Discharge section 42 Discharge port 44 Discharge pipe 50 Plug section 52 First plug component 54 Second plug component 60 Operating section 100 Pipeline 110 Main pipe 120 Standpipe 122 Opening 130 Cover 132 Cover frame 134 Main cover 136 Sub-cover 138 Main cover body 140 Fitting hole 142 Cylindrical section 210 Storage device 220 Storage section 222 Bottom section 240 Discharge section 250 Plug section S Drainage system

Claims (10)

A storage device connected to an existing pipeline that is buried underground and comprises a main pipe through which wastewater flows, and a riser pipe erected to communicate with the main pipe,
A storage section capable of storing water,
A discharge section for discharging the water stored in the storage section,
The aforementioned discharge section includes a plug that can be opened and closed,
It has,
The discharge section is connectable to an opening provided at the upper end of the riser pipe.
The discharge section has a cylindrical discharge pipe with a discharge port that opens inside the storage section,
The aforementioned plug portion,
A first plug component that can enter the inside of the discharge cylinder from the discharge port,
The first plug component has a second plug component which prevents entry from the outlet into the discharge cylinder on the side of the direction of entry from the outlet into the inside of the discharge cylinder,
A storage device characterized in that the discharge section can be opened and closed by inserting and removing the first plug component from the discharge pipe . A storage device that can be used to clean an existing pipeline by connecting to the fitting hole when the sub-lid is removed, in an existing lid body which is a parent-child lid type in which a fitting hole is formed through the parent lid body which fits into the lid frame and a sub-lid which fits into the fitting hole,
A bottomed cylindrical storage section capable of storing water,
An overhang formed so as to protrude outward from the storage section,
A discharge section having a discharge pipe with a discharge port provided at the bottom of the storage section,
The aforementioned outlet has a plug that can be opened and closed,
It has,
By inserting the discharge pipe into the fitting hole, the protruding portion contacts the upper surface of the main lid body and supports the storage device.
A storage device characterized in that, by opening the plug, the water stored in the storage section can be discharged from the discharge pipe with force based on hydrostatic pressure. It has an overhang that is formed to protrude outward from the storage portion,
The storage device according to claim 1, characterized in that, when the storage unit is installed, the protruding portion is in contact with the installation surface on which the storage unit is installed. The plug is positioned inside the storage section and can open and close the discharge section by moving in a predetermined direction.
It has an operating section connected to the plug and extended to the outside of the storage section,
The storage device according to claim 1, characterized in that the plug can be moved in the predetermined direction by operating the operating part from the outside of the storage part, thereby opening and closing the discharge part. The storage device according to claim 1, characterized in that the discharge section is provided at the bottom of the storage section. The storage device according to claim 1, characterized in that the bottom of the storage section is formed to have a downward slope toward the discharge section. A storage device comprising a storage section capable of storing water, a discharge section for discharging the water stored in the storage section, and a plug section that can open and close the discharge section,
The pipeline comprises a main pipe through which wastewater flows underground, and a riser pipe erected to communicate with the main pipe and having an opening that faces upward,
By installing the storage device on the ground and connecting the discharge section to the opening of the riser pipe, the water stored in the storage section can be discharged to the main pipe via the riser pipe.
It has a water intake device located inside the riser pipe that introduces water discharged from the discharge section of the storage device into the main pipe,
The water supply device,
An inlet that receives water discharged from the aforementioned discharge section,
A pipeline section through which water flows in from the aforementioned inlet section,
An outlet section for releasing water from the aforementioned pipeline section,
It has,
A drainage system characterized in that the pipe axis of the outlet section is positioned to be inclined toward the main pipe side than the pipe axis of the inlet section . It has a cover that is fitted over the opening,
The aforementioned lid,
A cover frame provided at the opening of the riser pipe,
A main lid body that fits into the lid frame and has fitting holes that penetrate vertically, and a main lid having a main lid discharge pipe that extends downward from the main lid body,
A sub-lid that fits into the aforementioned fitting hole,
It is equipped with,
The drainage system according to claim 7, characterized in that the discharge portion is connected to the opening by removing the sub-lid and connecting the discharge portion to the fitting hole. A temporary drainage system can be connected to the opening of the riser pipe.
The drainage system according to claim 7, characterized in that the storage device is connected to the opening of the riser adjacent to the riser upstream of the riser to which the temporary drainage equipment is connected. Multiple of the aforementioned risers are provided,
The temporary drainage equipment is connected to the opening of some of the risers among the multiple risers.
The drainage system according to claim 9, characterized in that, among the plurality of risers, the storage device provided to be paired with the temporary drainage equipment is connected to the opening of the riser that is connected to the main pipe at a position adjacent to the upstream side of the main pipe with respect to the riser to which the temporary drainage equipment is connected.