A municipal rainwater storage device and construction method

Abstract

The present invention discloses a municipal rainwater storage device and a construction method, belonging to the technical field of rainwater storage, including a primary sedimentation tank; a water inlet pipe is fixedly installed on one side of the primary sedimentation tank, a water outlet pipe is fixedly installed on the other side of the primary sedimentation tank, a filter screen is installed at one end of the water outlet pipe, an inclined plate is fixedly installed on the side of the primary sedimentation tank away from the water inlet pipe, a sundry storage tank is fixedly installed on one side of the inclined plate, and a separation component is arranged at the bottom end inside the primary sedimentation tank; in the present invention, by setting the separation component, when it is necessary to separate the sediments in the primary sedimentation tank, it avoids the problem that when there are many large-particle sundries, a large amount of sediments are likely to accumulate quickly in the primary sedimentation tank. At this time, it is necessary for the staff to close the primary sedimentation tank for a long time to remove the sediments, resulting in a decrease in work efficiency. It makes the removal work of the sediments in the primary sedimentation tank more convenient and fast, and improves the work efficiency of the municipal rainwater storage device.

Description

Technical Field

[0001] The present invention relates to the field of rainwater storage devices, and more specifically, to a municipal rainwater storage device and a construction method thereof. Background Art

[0002] Municipal rainwater storage devices are an important part of urban infrastructure. They help regulate rainwater runoff, reduce the burden on the urban drainage system, prevent and reduce urban waterlogging, and are also conducive to the collection and reuse of rainwater resources. Municipal rainwater storage devices usually consist of a collection system, a pretreatment facility, a storage tank, a purification facility, and a discharge system. Among them, large particulate impurities and sediments in the rainwater are removed through the pretreatment facility, and the rainwater is purified through the purification facility to improve the water quality. Finally, the discharge system discharges the rainwater in the storage tank to a designated location.

[0003] In existing municipal rainwater storage devices, a primary sedimentation tank is usually provided, and preliminary separation is carried out by the gravity of large particulate impurities in the rainwater. However, when there are many large particulate impurities, a large amount of sediment is likely to accumulate rapidly in the primary sedimentation tank. At this time, it is necessary for workers to close the primary sedimentation tank for a long time to remove the sediment, resulting in a problem of reduced work efficiency. Summary of the Invention

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to provide a municipal rainwater storage device that can overcome the problem that when there are many large particulate impurities, a large amount of sediment is likely to accumulate rapidly in the primary sedimentation tank, and at this time, it is necessary for workers to close the primary sedimentation tank for a long time to remove the sediment, resulting in a problem of reduced work efficiency.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides a municipal rainwater storage device and a construction method, including a primary sedimentation tank; a water inlet pipe is fixedly installed on one side of the primary sedimentation tank, a water outlet pipe is fixedly installed on the other side of the primary sedimentation tank, a filter screen is installed at one end of the water outlet pipe, an inclined plate is fixedly installed on the side of the primary sedimentation tank away from the water inlet pipe, a debris storage tank is fixedly installed on one side of the inclined plate, and a separation component is arranged at the bottom end inside the primary sedimentation tank.

[0007] The separation component includes a lifting filter plate disposed inside the primary sedimentation tank. Both sides of the lifting filter plate are symmetrically installed with a first guide rod and a second guide rod. The first guide rods are all slidably installed on the inner wall of the first guide groove, and the second guide rods are all slidably installed on the inner wall of the second guide groove. The first guide groove and the second guide groove are both opened on the inner wall of the primary sedimentation tank. One end of one of the second guide rods is rotatably installed with a first connecting rod, the other end of the first connecting rod is rotatably installed with a rotating rod, a driving rod is fixedly installed at the end of the rotating rod away from the first connecting rod, a pushing component is arranged on the outer wall of the driving rod, and one end of the driving rod is connected with a motor, and the motor is connected with an external power supply through a wire; when it is necessary to separate the sediment in the primary sedimentation tank, it can drive the lifting filter plate to move and tilt, so as to drive the accumulated sediment in the primary sedimentation tank to move into the debris storage tank under the action of gravity.

[0008] In a preferred technical solution of the present invention, the pushing component includes a first gear arranged on the outer wall of the driving rod. A first toothed plate is meshed and installed at the top of the first gear. One end of the first toothed plate is fixedly installed with a second toothed plate. A second gear is meshed and installed at the top of the second toothed plate. One side of the second gear is fixedly installed with a connecting rod, and a scraping plate is fixedly installed on the outer wall of the connecting rod; it can make the scraping plate push the sediment at the top of the side of the primary sedimentation tank close to the debris storage tank.

[0009] In a preferred technical solution of the present invention, an eccentric wheel is rotatably installed on one side of the scraping plate, and the eccentric wheel is fixedly installed on the outer wall of the connecting rod; when the second toothed plate drives the scraping plate to rotate through the second gear and the connecting rod, the connecting rod can drive the eccentric wheel to rotate an angle greater than a half circle, so that when the second toothed plate stops abutting against the second gear, the eccentric wheel drives the connecting rod and the scraping plate to reset under the action of its own gravity.

[0010] In a preferred technical solution of the present invention, the outer wall of the first gear is provided with a smooth part and a gear part; when the driving rod drives the lifting filter plate to rise, the first gear does not mesh with the first toothed plate, and when the driving rod drives the lifting filter plate to rotate, the first gear meshes with the first toothed plate again, so as to drive the pushing component to operate, and the pushing component pushes and separates the last sediment in the primary sedimentation tank.

[0011] In a preferred technical solution of the present invention, the tooth blocks at the top of the second toothed plate and the tooth blocks on the outer wall of the second gear are both provided in a ratchet shape; when the second toothed plate moves towards the direction close to the second gear, it can drive the second gear to rotate, and when the second toothed plate moves towards the direction away from the second gear, it will not drive the second gear to rotate.

[0012] In a preferred technical solution of the present invention, a concavo-convex groove is provided at one end of the second guiding groove; this enables the second guiding rod to vibrate when passing through the concavo-convex groove, thereby driving the sediment to vibrate through the lifting filter plate, and further promoting the rainwater between the sediments to fall, further improving the rainwater collection effect of the municipal rainwater storage device.

[0013] In a preferred technical solution of the present invention, the rotating rod is composed of a rotating rod and a telescopic rod. One end of the telescopic rod is slidably installed on the inner wall of one end of the rotating rod. A guiding protection rod is fixedly installed at one end of the telescopic rod, and a spring is wound around the outer wall of the guiding protection rod. The rotating rod and the telescopic rod are connected by a spring; this can avoid the problem of movement interference between the second guiding rod and the rotating rod when the second guiding rod vibrates, improving the reliability and stability of the device.

[0014] In a preferred technical solution of the present invention, an induction groove is provided on one side of the inner wall of the primary sedimentation tank. A water passing groove is provided on one side of the induction groove. A floating ball is slidably installed inside the water passing groove. A light signal transmitting device and a light signal receiving device are respectively installed on both sides of the induction groove; when the sediment in the primary sedimentation tank is too much and the rainwater water surface is too high, the light signal receiving device can send a signal to close the water inlet pipe, start the motor and notify the staff.

[0015] A construction method for a municipal rainwater storage device, the specific construction method includes the following steps:

[0016] The first step: Excavate the soil. According to the design requirements and on-site conditions, conduct measurement and positioning to determine the position, size and elevation, and then conduct layered excavation of the soil.

[0017] The second step: Foundation construction. Lay a gravel cushion layer and a reinforced concrete bottom slab, and then conduct the construction of the anti-seepage layer. Lay two layers of cloth and one layer of film, and weld and then lay it on the bottom of the water tank.

[0018] The third step: Module assembly. Install modules such as the storage tank, sedimentation tank, and purification tank.

[0019] The fourth step: Protective layer paving. Pave the protective layer around the anti-seepage layer and on the top of the module storage tank according to the design requirements.

[0020] The fifth step: Backfill. Before backfilling, the construction waste and sundries in the foundation pit should be cleaned, and the soil quality should meet the design requirements. Then bury the rainwater storage device.

[0021] The sixth step: Installation of mechanical and electrical equipment. Install mechanical and electrical equipment such as lift pumps and control cabinets.

[0022] The seventh step: System testing and commissioning. After installation, conduct system testing and commissioning to check whether the airtightness, drainage function, and level control of the storage tank meet the design requirements.

[0023] The beneficial effects of the present invention are as follows:

[0024] For the municipal rainwater storage device provided by the present invention, by setting a separation component, when it is necessary to separate the sediment in the primary sedimentation tank, the water inlet pipe can be closed and the motor can be started, so that the motor drives the lifting filter plate to move and tilt through the driving rod, rotating rod, first connecting rod and second guide rod, thereby driving the accumulated sediment in the primary sedimentation tank to move into the debris storage tank under the action of gravity. This avoids the problem that when there are many large-particle debris, a large amount of sediment is likely to accumulate quickly in the primary sedimentation tank, and at this time, it is necessary for the staff to close the primary sedimentation tank for a long time to remove the sediment, resulting in a decrease in work efficiency. It makes the removal of sediment in the primary sedimentation tank more convenient and fast, and improves the work efficiency of the municipal rainwater storage device;

[0025] 2. In the present invention, by setting a pushing component, when separating the sediment in the primary sedimentation tank, the driving rod can drive the scraper to rotate through the first gear, first toothed plate, second toothed plate, second gear and connecting rod, so that the scraper pushes the sediment at the top of the side of the primary sedimentation tank close to the debris storage tank. This avoids the problem that the sediment is likely to stay at the horizontal top of the side of the primary sedimentation tank close to the debris storage tank, resulting in a decrease in the separation effect of the separation component, and the long-term residue of the sediment is also likely to deteriorate and stink, affecting the purification effect of the device. It improves the separation effect of the sediment, thereby improving the stability and reliability of the separation component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the main structure of the present invention;

[0027] Figure 2 is a schematic sectional view of the induction groove of the present invention;

[0028] Figure 3 is of the present invention Figure 2 an enlarged view of part A in;

[0029] Figure 4 is a schematic sectional view of the concave-convex groove of the present invention;

[0030] Figure 5 is of the present invention Figure 4 an enlarged view of part B in;

[0031] Figure 6 is a schematic sectional view of the separation component of the present invention;

[0032] Figure 7 is of the present invention Figure 6 an enlarged view of part C in;

[0033] Figure 8 is of the present invention Figure 6 an enlarged view of part D in.

[0034] In the figure:

[0035] 1. Primary sedimentation tank; 2. Inlet pipe; 3. Outlet pipe; 4. Inclined plate; 5. Debris storage tank; 6. Lifting filter plate; 7. First guide rod; 8. Second guide rod; 9. First guide groove; 10. Second guide groove; 11. First connecting rod; 12. Rotating rod; 13. Driving rod; 14. First gear; 15. First toothed plate; 16. Second toothed plate; 17. Second gear; 18. Connecting rod; 19. Scraper; 20. Eccentric wheel; 21. Concave-convex groove; 22. Guide protection rod; 23. Spring; 24. Induction groove; 25. Water passing trough; 26. Floating ball; 27. Optical signal transmitting device; 28. Optical signal receiving device. Specific implementation mode

[0036] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation modes.

[0037] As Figures 1 - 8 shown, in the embodiment, a municipal rainwater storage device is provided, including a primary sedimentation tank 1; an inlet pipe 2 is fixedly installed on one side of the primary sedimentation tank 1, an outlet pipe 3 is fixedly installed on the other side of the primary sedimentation tank 1, a filter screen is installed at one end of the outlet pipe 3, an inclined plate 4 is fixedly installed on the side of the primary sedimentation tank 1 away from the inlet pipe 2, a debris storage tank 5 is fixedly installed on one side of the inclined plate 4, and a separation component is arranged at the bottom end inside the primary sedimentation tank 1;

[0038] The separation component includes a lifting filter plate 6 arranged inside the primary sedimentation tank 1. First guide rods 7 and second guide rods 8 are symmetrically installed on both sides of the lifting filter plate 6. The first guide rods 7 are all slidably installed on the inner wall of the first guide groove 9, and the second guide rods 8 are all slidably installed on the inner wall of the second guide groove 10. The first guide groove 9 and the second guide groove 10 are both opened on the inner wall of the primary sedimentation tank 1. One end of one of the second guide rods 8 is rotatably installed with a first connecting rod 11, the other end of the first connecting rod 11 is rotatably installed with a rotating rod 12, a driving rod 13 is fixedly installed at the end of the rotating rod 12 away from the first connecting rod 11, a pushing component is arranged on the outer wall of the driving rod 13, one end of the driving rod 13 is connected with a motor, and the motor is connected with an external power supply through a wire. By setting the separation component, when it is necessary to separate the sediment in the primary sedimentation tank 1, the inlet pipe 2 can be closed and the motor can be started, so that the motor drives the lifting filter plate 6 to move and tilt through the driving rod 13, the rotating rod 12, the first connecting rod 11 and the second guide rod 8, thereby driving the accumulated sediment in the primary sedimentation tank 1 to move into the debris storage tank 5 under the action of gravity, avoiding the problem that when there are many large-particle debris, a large amount of sediment is likely to accumulate quickly in the primary sedimentation tank 1, and at this time, it is necessary for the staff to close the primary sedimentation tank 1 for a long time to remove the sediment, resulting in a decrease in work efficiency. This makes the removal of sediment in the primary sedimentation tank 1 more convenient and fast, and improves the work efficiency of the municipal rainwater storage device.

[0039] Please refer to Figure 4 , Figure 6 and Figure 7 As shown, the pushing component includes a first gear 14 arranged on the outer wall of the driving rod 13. A first toothed plate 15 is meshed and installed at the top of the first gear 14. One end of the first toothed plate 15 is fixedly installed with a second toothed plate 16. A second gear 17 is meshed and installed at the top of the second toothed plate 16. One side of the second gear 17 is fixedly installed with a connecting rod 18. A scraping plate 19 is fixedly installed on the outer wall of the connecting rod 18. By setting the pushing component, when separating the sediment in the primary sedimentation tank 1, the driving rod 13 can drive the scraping plate 19 to rotate through the first gear 14, the first toothed plate 15, the second toothed plate 16, the second gear 17 and the connecting rod 18, so that the scraping plate 19 pushes the sediment at the top of the primary sedimentation tank 1 close to the side of the debris storage tank 5, avoiding the problem that the sediment is likely to stay at the horizontal top of the primary sedimentation tank 1 close to the side of the debris storage tank 5, resulting in a decline in the separation effect of the separation component. The long-term residue of the sediment is also prone to deterioration and odor, affecting the purification effect of the device, improving the separation effect of the sediment, and thus improving the stability and reliability of the separation component.

[0040] Please refer to Figure 6 and Figure 7 As shown, an eccentric wheel 20 is rotatably installed on one side of the scraping plate 19. The eccentric wheel 20 is fixedly installed on the outer wall of the connecting rod 18. And the length between the two ends of the second toothed plate 16 is greater than half of the circumferential length of the outer wall of the second gear 17, enabling the second toothed plate 16 to drive the scraping plate 19 to rotate through the second gear 17 and the connecting rod 18, so that the connecting rod 18 drives the eccentric wheel 20 to rotate an angle greater than a half circle. Thus, when the second toothed plate 16 stops abutting against the second gear 17, the eccentric wheel 20 drives the connecting rod 18 and the scraping plate 19 to reset under the action of its own gravity.

[0041] Please refer to Figure 6 and Figure 7 As shown, the outer wall of the first gear 14 is provided with a smooth part and a gear part, enabling the first gear 14 not to mesh with the first toothed plate 15 when the driving rod 13 drives the lifting filter plate 6 to rise, and the first gear 14 meshes with the first toothed plate 15 again when the driving rod 13 drives the lifting filter plate 6 to rotate, thereby driving the pushing component to operate, so that the pushing component pushes and separates the last sediment in the primary sedimentation tank 1, improving the separation effect of the sediment by the device.

[0042] Please refer to Figure 6 and Figure 7As shown in the figure, the tooth blocks at the top of the second toothed plate 16 and the tooth blocks on the outer wall of the second gear 17 are both set in a ratchet shape, so that when the second toothed plate 16 moves towards the second gear 17, it can drive the second gear 17 to rotate, and when the second toothed plate 16 moves away from the second gear 17, it will not drive the second gear 17 to rotate. This avoids the problem that when there are sediments remaining at the top of the primary sedimentation tank 1 near the side of the debris storage tank 5, when the second toothed plate 16 resets, it drives the scraper 19 to rotate through the second gear 17 and the connecting rod 18, which easily causes the scraper 19 to push the remaining sediments back into the primary sedimentation tank 1, resulting in an increase in sediments in the primary sedimentation tank 1 and affecting the working efficiency of the device, and improves the stability and reliability of the pushing component.

[0043] In summary, through the cooperation of the second toothed plate 16, the second gear 17 and the eccentric wheel 20, when the second toothed plate 16 moves towards the second gear 17, the second toothed plate 16 can drive the second gear 17 to rotate, and the second gear 17 drives the eccentric wheel 20 to rotate by an angle greater than half a circumference through the connecting rod 18. When the second toothed plate 16 moves away from the second gear 17, it does not drive the second gear 17 to rotate. At this time, the eccentric wheel 20 rotates and resets under the action of gravity to complete a full circle, avoiding the reverse rotation and reset of the scraper 19.

[0044] A construction method for a municipal rainwater storage device, and the specific construction method includes the following steps:

[0045] The first step: Excavate the soil. According to the design requirements and the on-site situation, conduct measurement and positioning to determine the position, size and elevation, and then carry out layered excavation of the soil.

[0046] The second step: Foundation construction. Lay a gravel cushion layer and a reinforced concrete floor slab, and then carry out the construction of the anti-seepage layer, lay two-layer geotextile and one-layer membrane, and weld and then lay it on the bottom of the water tank.

[0047] The third step: Module assembly. Install modules such as the storage tank, sedimentation tank, and purification tank.

[0048] The fourth step: Protective layer paving. Pave the protective layer around and on the top of the anti-seepage layer of the module storage water tank according to the design requirements.

[0049] The fifth step: Backfill. Before backfilling, clean the construction waste and sundries in the foundation pit, and the soil quality should meet the design requirements. Then bury the rainwater storage device.

[0050] The sixth step: Installation of mechanical and electrical equipment. Install mechanical and electrical equipment such as lift pumps and control cabinets.

[0051] The seventh step: System testing and commissioning. After installation, conduct system testing and commissioning to check whether the airtightness, drainage function and level control of the storage tank meet the design requirements.

[0052] Embodiment 2

[0053] Please refer to Figure 4 and Figure 5 As shown, compared with Embodiment 1, as another implementation manner of the present invention, one end of the second guiding groove 10 is provided with a concave-convex groove 21. When the second guiding rod 8 drives the lifting filter plate 6 to move along the second guiding groove 10, the second guiding rod 8 vibrates when passing through the concave-convex groove 21, so as to drive the sediment to vibrate through the lifting filter plate 6, thereby promoting the rainwater between the sediments to fall, and further improving the rainwater collection effect of the municipal rainwater storage device.

[0054] Please refer to Figure 6 and Figure 8 As shown, the rotating rod 12 is composed of a rotating rod and a telescopic rod. One end of the telescopic rod is slidably installed on the inner wall of one end of the rotating rod. One end of the telescopic rod is fixedly installed with a guiding and protecting rod 22. A spring 23 is wound around the outer wall of the guiding and protecting rod 22. The rotating rod and the telescopic rod are connected by the spring 23. When the second guiding rod 8 drives the lifting filter plate 6 to vibrate, the second guiding rod 8 drives the telescopic rod to move, and the telescopic rod drives the spring 23 to generate elastic deformation, accumulating elastic energy. When the second guiding rod 8 stops vibrating, the spring 23 releases elastic potential energy and generates elastic deformation to pull the telescopic rod to reset, avoiding the problem of movement interference between the second guiding rod 8 and the rotating rod 12 when the second guiding rod 8 vibrates, and improving the reliability and stability of the device.

[0055] Please refer to Figure 2 and Figure 3 As shown, on one side of the inner wall of the primary sedimentation tank 1, an induction groove 24 is provided. A water passing groove 25 is provided on one side of the induction groove 24. A floating ball 26 is slidably installed inside the water passing groove 25. A light signal transmitting device 27 and a light signal receiving device 28 are respectively installed on both sides of the induction groove 24. When the sediment in the primary sedimentation tank 1 is too much and the rainwater water surface is too high, the floating ball 26 rises, thereby blocking the light signal receiving device 28 from receiving the light signal sent by the light signal transmitting device 27, so that the light signal receiving device 28 sends a signal to close the water inlet pipe 2, start the motor and notify the staff, avoiding the situation that it is difficult for the staff to observe and find that the sediment in the primary sedimentation tank 1 is too much during the actual operation of the municipal rainwater storage device, thus making it difficult to separate the sediment in time and affecting the working effect of the municipal rainwater storage device, and improving the working effect of the municipal rainwater storage device.

[0056] Working principle: In rainy weather, the rainwater collection system in the municipal rainwater storage device transports the collected rainwater to the primary sedimentation tank 1 through the water inlet pipe 2, so that the large-particle impurities in the rainwater settle by gravity, and the top-layer clear water is discharged from the primary sedimentation tank 1 through the water outlet pipe 3;

[0057] When more sediments accumulate at the bottom of the primary sedimentation tank 1, the liquid level of the rainwater in the primary sedimentation tank 1 rises, causing the rainwater to fill the induction tank 24. The buoyancy of the rainwater in the induction tank 24 drives the float ball 26 to move upward. The float ball 26 moves between the optical signal transmitting device 27 and the optical signal receiving device 28, thus blocking the optical signal receiving device 28 from receiving the optical signal transmitted by the optical signal transmitting device 27. As a result, the optical signal receiving device 28 sends a signal to control the closing of the water inlet pipe 2 and the water outlet pipe 3, and at the same time starts the motor. The motor drives the driving rod 13 to rotate, the driving rod 13 drives the rotating rod 12 to rotate, the rotating rod 12 drives the first connecting rod 11 to move, the first connecting rod 11 drives the second guide rod 8 to move, the second guide rod 8 drives the lifting filter plate 6 to move upward, the lifting filter plate 6 drives the first guide rod 7 to move. When the first guide rod 7 moves to the top of the first guide groove 9, the second guide rod 8 continues to move along the second guide groove 10, causing one end of the lifting filter plate 6 driven by the second guide rod 8 to rotate, so that the lifting filter plate 6 is tilted, promoting the sediments to move along the debris storage tank 5 and the inclined plate 4 into the debris storage tank 5. At the same time, the second guide rod 8 moves along the concave-convex groove 21, causing the lifting filter plate 6 to vibrate, thereby promoting the rainwater between the sediments to pass through the lifting filter plate 6 and fall to the bottom of the primary sedimentation tank 1, improving the utilization rate of rainwater. At this time, the driving rod 13 drives the first gear 14 to vibrate, the first gear 14 drives the first toothed plate 15 to move, the first toothed plate 15 drives the second toothed plate 16 to move, the second toothed plate 16 drives the second gear 17 to vibrate, the second gear 17 drives the connecting rod 18 to rotate, and the connecting rod 18 drives the scraper 19 to rotate, so that the scraper 19 pushes the sediments at the top of the side of the primary sedimentation tank 1 close to the debris storage tank 5. At this time, the optical signal receiving device 28 sends a signal to notify the staff;

[0058] After moving the sediments in the primary sedimentation tank 1 into the debris storage tank 5, the staff can control the motor to rotate in the reverse direction, thereby driving the separation component to reset, and further driving the first toothed plate 15 to reset. The first toothed plate 15 drives the second toothed plate 16 to reset. When the second toothed plate 16 stops abutting against the second gear 17, the eccentric wheel 20 rotates and resets under the action of gravity, thereby driving the scraper 19 to reset through the connecting rod 18. At this time, the staff can open the water inlet pipe 2 to restore the normal operation of the municipal rainwater storage device.

[0059] Other technologies of this embodiment adopt existing technologies.

[0060] This invention is described through preferred embodiments. Those skilled in the art know that without departing from the spirit and scope of this invention, various changes or equivalent replacements can be made to these features and embodiments. This invention is not limited by the specific embodiments disclosed herein, and other embodiments falling within the scope of the claims of this application belong to the scope of protection of this invention.

Claims

1. A municipal rainwater storage device, characterized in that: The invention comprises a primary sedimentation tank (1); a water inlet pipe (2) is fixedly installed on one side of the primary sedimentation tank (1), a water outlet pipe (3) is fixedly installed on the other side of the primary sedimentation tank (1), a filter screen is installed on one end of the water outlet pipe (3), an inclined plate (4) is fixedly installed on the side of the primary sedimentation tank (1) away from the water inlet pipe (2), a debris storage tank (5) is fixedly installed on one side of the inclined plate (4), and a separation component is arranged at the bottom end of the interior of the primary sedimentation tank (1); The separation assembly comprises a lifting filter plate (6) arranged inside the primary sedimentation tank (1), a first guide rod (7) and a second guide rod (8) are installed on both sides of the lifting filter plate (6), and the first guide rods (7) and the second guide rods (8) on both sides are symmetrically arranged with the center line of the lifting filter plate (6) as the center line, the first guide rods (7) are slidably installed on the inner wall of the first guide groove (9), and the second guide rods (8) are slidably installed on the inner wall of the second guide groove (10), and the first guide rods (7) and the second guide rods (8) are slidably installed on the inner wall of the second guide groove (10). The groove (9) and the second guide groove (10) are both formed on the inner wall of the primary sedimentation tank (1), wherein a first connecting rod (11) is rotatably mounted on one end of the second guide rod (8), a rotating rod (12) is rotatably mounted on the other end of the first connecting rod (11), a driving rod (13) is fixedly mounted on one end of the rotating rod (12) away from the first connecting rod (11), a pushing assembly is arranged on the outer wall of the driving rod (13), a motor is connected to one end of the driving rod (13), and the motor is connected to an external power source via a wire; The pushing assembly comprises a first gear (14) arranged on the outer wall of the driving rod (13); a first tooth plate (15) is meshedly mounted on the top end of the first gear (14); a second tooth plate (16) is fixedly mounted on one end of the first tooth plate (15); a second gear (17) is meshedly mounted on the top end of the second tooth plate (16); a connecting rod (18) is fixedly mounted on one side of the second gear (17); and a scraper (19) is fixedly mounted on the outer wall of the connecting rod (18).

2. A municipal rainwater storage device according to claim 1, characterized in that: An eccentric wheel (20) is rotatably mounted on one side of the scraper (19), and the eccentric wheel (20) is fixedly mounted on the outer wall of the connecting rod (18).

3. A municipal rainwater storage device according to claim 1, characterized in that: The outer wall of the first gear (14) comprises a smooth portion and a gear portion.

4. A municipal rainwater storage device according to claim 1, characterized in that: The tooth block at the top end of the second tooth plate (16) and the tooth block on the outer wall of the second gear (17) are both configured in a ratchet shape.

5. The municipal rainwater storage device according to claim 1, characterized in that: A concave-convex groove (21) is formed at one end of the second guide groove (10).

6. A municipal rainwater storage device according to claim 1, characterized in that: The rotating rod (12) is composed of a rotating rod and a telescopic rod, one end of the telescopic rod is slidably mounted on the inner wall of one end of the rotating rod, one end of the telescopic rod is fixedly mounted with a guide protection rod (22), the outer wall of the guide protection rod (22) is wound with a spring (23), and the rotating rod and the telescopic rod are connected via the spring (23).

7. A municipal rainwater storage device according to claim 1, characterized in that: A sensing groove (24) is provided on one side of the inner wall of the primary sedimentation tank (1), a water passage groove (25) is provided on one side of the sensing groove (24), a floating ball (26) is slidably mounted on the inner side of the water passage groove (25), and an optical signal transmitting device (27) and an optical signal receiving device (28) are respectively mounted on both sides of the sensing groove (24).

8. A construction method for a municipal rainwater storage device, characterized in that: According to a municipal rainwater storage device according to any one of claims 1 to 7, the specific construction method comprises the following steps: Step 1: Excavate the earth, measure and locate according to the design requirements and on-site conditions, determine the location, size and elevation, and then excavate the earth in layers; Step 2: Foundation construction, laying of gravel cushion and reinforced concrete bottom plate, construction of anti-seepage layer, laying of two cloths and one membrane, welding and laying on the bottom of the pool; Step 3: Module assembly, install the storage tank, sedimentation tank, purification tank and other modules; Step 4: Laying the protective layer: Lay the protective layer around and on the top of the module water storage tank anti-seepage layer according to the design requirements; Step 5: Backfilling. Before backfilling, the construction waste and debris in the foundation pit should be cleaned up. The soil quality should meet the design requirements, and then the rainwater storage device should be buried; Step 6: Installation of electromechanical equipment, including installation of lifting water pumps, control cabinets and other electromechanical equipment; Step 7: System testing and debugging. After the installation is completed, system testing and debugging are carried out to check whether the airtightness, drainage function and level control of the regulating reservoir meet the design requirements.

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