Rainwater seepage and storage integrated device with automatic desilting function and working method

Abstract

The invention discloses a rainwater infiltration and storage integrated device with an automatic desilting function and a working method. According to the technical scheme, the rainwater infiltration and storage integrated device comprises an infiltration and storage module and an automatic desilting module; one side of the infiltration and storage module is connected with a water inlet pipe; the automatic desilting module is arranged at the end, close to the water inlet pipe, of the top of the infiltration and storage module. A slope bottom plate and geotechnical cloth are arranged at the bottom of the infiltration and storage module, a hanging basket is embedded in the silt collecting pond, the desilting module is arranged at the end, close to the water inlet pipe, of the top of the infiltration and storage module, and a desilting steel wire rope is connected with the geotechnical cloth, a winch, a high-pressure water sprayer, a water level sensor and an automatic control system. The rainwater filtering and infiltration effects are achieved through the geotechnical cloth and the pervious concrete, the dredging work can be automatically started without manual monitoring through the water level sensor and the automatic system, the problems that manual monitoring is needed and the dredging efficiency is low are solved, and the maintenance cost of the infiltration and storage device is saved.

Description

Technical Field

[0001] This invention relates to the field of rainwater harvesting and utilization, and in particular to an integrated rainwater infiltration and storage device and its working method with automatic silt removal function. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] The rapid pace of urbanization has altered urban surfaces, increasing paved areas and hindering rainwater infiltration to replenish groundwater. This has resulted in significant surface runoff, reducing groundwater replenishment and increasing the risk of urban flooding. To address this ecological conflict, existing technologies are beginning to utilize rainwater harvesting projects to compensate for the loss of atmospheric precipitation infiltration caused by urbanization.

[0004] There are currently three related solutions in the existing technology. The first adopts a "diversion pond + modular water tank" architecture, which collects rainwater through staged filtration and is equipped with inspection wells for dredging and maintenance. Its limitation is that the system only has primary filtration and storage functions, lacks a direct infiltration mechanism, and occupies a large area. The second collects infiltrated rainwater into a storage tank through a front-end filtration mechanism. Although it can prevent pipe blockage, its application is limited to green belt areas and requires additional rainwater utilization facilities. The third uses the kinetic energy of water flow to remove silt from the bottom of the pond, but it has two drawbacks: the dredging process relies entirely on passive hydraulic action and lacks active control capabilities; at the same time, this design does not integrate natural infiltration. The key problems with the existing technology are that the separate construction of multiple facilities exacerbates the consumption of land resources, increases the amount of earthwork, and increases construction costs and management difficulty; siltation problems lead to a decline in system efficiency, and the difficulty of maintenance increases exponentially. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated rainwater infiltration and storage device and its operating method with automatic dredging function. It can simultaneously collect, filter, store, and infiltrate rainwater. Furthermore, by utilizing a water level sensor and an automated control system, it automatically initiates dredging operations based on the rate of water level decline, thus solving the problems of requiring manual monitoring and low dredging efficiency. This saves on the maintenance costs of the infiltration and storage device and improves the device's operating efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, the present invention provides an integrated rainwater infiltration and storage device with automatic sludge removal function, comprising a machine room, an infiltration and storage module and an automatic sludge removal module; The infiltration and storage module is installed underground, the machine room is located at one end of the top of the infiltration and storage module, and an inspection well is installed at the other end of the top of the infiltration and storage module. The bottom of the infiltration and storage module is provided with a base plate with a set slope, and geotextile is provided on the top of the base plate; a sediment collection pool is also provided at the bottom of the infiltration and storage module; a hanging basket is embedded in the sediment collection pool, and the bottom of the sediment collection pool is permeable concrete. The automatic dredging module includes a dredging wire rope, a dredging winch, a high-pressure water nozzle, a water level sensor, and an automated control system. The high-pressure water nozzle extends into the infiltration and storage module through the interlayer between the wire rope and the infiltration and storage module. The water level sensor is located in the sediment collection tank. One end of the dredging wire rope is connected to the geotextile, and the other end is connected to the dredging winch, which is located in the machine room. The automated control system is connected to the dredging winch, the high-pressure water nozzle, and the water level sensor.

[0007] As a further implementation, the infiltration and storage module is provided with an inlet on one side connected to the inlet pipe and an overflow port on the other side connected to the overflow pipe.

[0008] As a further implementation, a hoisting winch and a suspended platform wire rope are provided at the inspection well. The hoisting winch is connected to one end of the suspended platform wire rope, and the other end of the suspended platform wire rope is connected to the suspended platform. The suspended platform is a device with an open top and a steel frame for the rest of the structure. A steel filter screen is installed in the steel frame, and geotextile is laid on the bottom surface of the suspended platform. Tie points are set at the four corners of the upper part of the suspended platform, and the tie points are hinged to the wire rope.

[0009] As a further implementation, the infiltration and storage module is a square underground water tank, consisting of a bottom plate, a left side plate, a right side plate, a front side plate, a rear side plate, and a top plate. The bottom plate is made of permeable concrete; the left side plate, right side plate, front side plate, rear side plate, and top plate are all made of concrete.

[0010] As a further implementation, the water inlet pipe is installed on the left side plate and close to the rear side plate and the top plate, and a filter screen is installed at the front end of the water inlet of the water inlet pipe.

[0011] As a further implementation, the geotextile is fitted with soft rubber buckles at its edges, and anchor points are set at regular intervals on the rubber buckles.

[0012] As a further implementation, the geotextile is made of five layers of woven fabric made of polyester material.

[0013] As a further implementation, anchor points are arranged at intervals on the soft rubber buckle, and the anchor points are bolted to one end of the dredging wire rope, with limiters installed on the dredging wire rope.

[0014] As a further implementation, the automated control system consists of two parts: a water level sensor and a controller. The water level sensor is a wired transmission sensor that transmits water level data to the controller in real time via a data line. The controller receives the water level data sent by the water level sensor and directly controls the start and stop of the electromechanical equipment, which in turn controls the operation of the dredging winch and high-pressure water nozzles.

[0015] Secondly, the present invention also provides a method for operating an integrated rainwater infiltration and storage device with automatic silt removal function, comprising the following steps: S1. Rainwater enters the inlet pipe and is collected into the infiltration and storage module through the inlet pipe. The water level sensor monitors the water level in the infiltration and storage module. S2. The automated control system calculates and analyzes that when the blockage is severe and the water level meets the set dredging conditions, the automated control system will start the dredging winch, pull the dredging wire rope, lift the geotextile on the bottom plate with a certain slope, and when the limit switch on the dredging wire rope is triggered, the dredging winch will stop working. S3. The automatic control system starts the high-pressure water nozzles, using the high-pressure water jets to flush the geotextile and wash the mud and sand on the surface of the geotextile into the basket of the mud and sand collection pool. S4. The automated control system starts the hoisting winch, pulls the basket with the wire rope, removes the basket, replaces the geotextile or cleans the mud and sand. The dredging operation is completed by cleaning the mud and sand in the basket.

[0016] The beneficial effects of the present invention are as follows: The permeable bottom plate of the infiltration and storage module of this invention ensures that rainwater can directly infiltrate and replenish groundwater, combining rainwater collection, storage, and infiltration utilization facilities. The dredging module monitors the water level through a water level sensor, and the automated control system analyzes the infiltration and storage capacity and siltation status of the module. When dredging conditions are met, the dredging winch and high-pressure water nozzles are automatically activated to achieve automatic dredging without manual monitoring, greatly reducing labor costs. By using the dredging winch to pull the dredging wire rope, the geotextile is given a certain slope, which, combined with the high-pressure water nozzles, efficiently washes the silt from the surface of the geotextile into the silt collection pool, improving dredging efficiency.

[0017] The infiltration and storage module of this invention features a sloping base plate to ensure that rainwater can naturally flow into the sediment collection tank, improving the rainwater diversion effect. Above the base plate is a geotextile composed of five layers of polyester filament geotextile and soft rubber strips, which protects and filters the permeable concrete. The soft rubber strips are heavy and easy to bend, ensuring that the geotextile will not curl or be damaged by water flow impact. A suspended basket is embedded in the sediment collection tank, lined with geotextile, to collect sediment during operation and dredging, improving infiltration and storage capacity and efficiency. An inspection well is installed on the top plate corresponding to the sediment collection tank, with a hoisting winch and moving pulleys at the well. The hoisting winch and wire ropes of the suspended basket can be used to lift the basket to the ground surface, facilitating the removal of accumulated sediment or replacement of the entire geotextile, saving maintenance costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0019] Figure 1 This is a schematic diagram of the structural elevation of the present invention; Figure 2 This is a frontal view of the permeation and storage module of the present invention; Figure 3 This is a plan view of the permeation and storage module of the present invention; Figure 4 This is a schematic diagram of the geotextile soft rubber fastener structure for the bottom plate of the water storage tank according to the present invention; Figure 5 This is a schematic diagram of the structure of the suspended platform of the present invention; Figure 6 This is a schematic diagram of the automatic sludge removal module of the present invention; Figure 7 This is a flowchart illustrating the automatic dredging module of the present invention.

[0020] In the diagram: 1. Machine room; 2. Infiltration and storage module; 3. Automatic sludge removal module; 4. Water storage tank; 5. Inlet; 6. Overflow outlet; 7. Base plate; 8. Geotextile; 9. Soft rubber strip; 10. Anchor point; 11. Inspection well; 12. Sediment collection tank; 13. Suspended basket; 14. Side plate; 15. Top plate; 16. Sludge removal winch; 17. Sludge removal wire rope; 18. High-pressure water nozzle; 19. Automated control system; 20. Water level sensor; 21. Steel frame; 22. Steel filter screen; 23. Tie point; 24. Electromechanical equipment; 25. Limit switch; 26. Lifting winch. Detailed Implementation

[0021] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0022] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. Example 1 This embodiment discloses an integrated rainwater infiltration and storage device with automatic silt removal function, such as Figures 1-6 As shown, it includes a machine room, a seepage storage module, and an automatic sludge removal module; The seepage storage module is installed underground, and the machine room is located at one end of the top of the seepage storage module. The other end of the top of the seepage storage module is equipped with an inspection well to provide a convenient passage for inspection, maintenance, and dredging operations. The machine room 1 is a semi-buried structure, and its position can be adjusted according to the construction environment, such as surface installation or backfilling foundation. The machine room 1 needs to be equipped with moisture-proof, dehumidification, and ventilation facilities to ensure the long-term stable operation of the electromechanical equipment 24. The bottom of the infiltration and storage module 2 is provided with a base plate 7 with a set slope, which is conducive to the flow of sediment towards the sediment collection pool 12 under the action of gravity, so as to achieve natural deposition. A geotextile 8 is provided above the base plate 7, which can effectively filter impurities in rainwater and prevent sediment from entering the infiltration and storage space. The bottom of the infiltration and storage module 2 is also provided with a sediment collection pool 12. The sediment collection pool 12 is embedded with a hanging basket 13 for easy centralized cleaning of sediment. The bottom of the sediment collection pool 12 is permeable concrete, which ensures effective collection of sediment without affecting the infiltration of rainwater. The automatic dredging module 3 includes multiple dredging wire ropes 17 of different lengths, a dredging winch 16, a high-pressure water nozzle 18, a water level sensor, and an automated control system 19. The high-pressure water nozzle 18 extends into the infiltration and storage module 2 through the interlayer between the module and the module, precisely washing the geotextile 8. The water level sensor 20 is located in the sediment collection tank 12. One end of the dredging wire rope 17 is connected to the geotextile 8, and the other end is connected to the dredging winch 16. The posture of the geotextile 8 is controlled by the operation of the winch 16. The automated control system 19 is connected to the dredging winch 16, the high-pressure water nozzle 18, and the water level sensor 20, respectively, to achieve automated control of the entire dredging process. This solves the problems of unreasonable space utilization, difficult dredging, high manual maintenance costs, and unstable system operation in traditional rainwater infiltration and storage devices. It integrates rainwater infiltration and storage with automatic dredging, reduces manual intervention, improves system operating efficiency, and ensures long-term stable operation of the rainwater infiltration and storage device.

[0023] As a further implementation, the automatic sludge removal module 3 is provided with an inlet 5 connected to the inlet pipe on one side and an overflow port 6 connected to the overflow pipe on the other side. Specifically, the inlet 5 allows rainwater to flow smoothly into the infiltration and storage module 2, while the overflow port 6 discharges excess rainwater in a timely manner when the water level in the infiltration and storage module 2 is too high, ensuring the safe operation of the device.

[0024] As a further implementation, a hoisting winch 26 and a wire rope for a suspended basket 13 are provided at the inspection well 11. The hoisting winch 26 is connected to one end of the wire rope of the suspended basket 13, and the other end of the wire rope of the suspended basket 13 is connected to the suspended basket 13. The suspended basket 13 is a device with an open top and a steel frame for the rest. A steel filter screen 22 is installed in the steel frame 21 to effectively intercept larger particles of mud and sand. Geotextile 8 is laid on the bottom surface of the suspended basket 13 to further filter fine particles of impurities. Tie points 23 are provided at the four corners of the upper part of the suspended basket 13, and the tie points 23 are hinged to the wire rope.

[0025] As a further implementation, the water storage tank 4 is a square underground water tank, consisting of a bottom plate 7, side plates 14 and a top plate 15. The bottom plate 7 is made of permeable concrete, which can effectively promote the infiltration of rainwater. The side plates 14 include a left side plate, a right side plate, a front side plate and a rear side plate. Both the side plates and the top plate 15 are made of waterproof concrete.

[0026] As a further implementation, the water inlet pipe is installed on the left side plate and close to the rear side plate and top plate 15. A filter screen is installed at the front end of the water inlet 5 of the water inlet pipe, which can initially filter rainwater, prevent larger particles or impurities from entering the water storage tank 4, and reduce the filtration burden of the subsequent geotextile 8.

[0027] As a further implementation, the geotextile 8 is fitted with soft rubber buckles 9 at its edges, and anchoring points 10 are set at regular intervals on the rubber buckles to ensure that the geotextile 8 will not curl or be damaged due to water flow impact, and will not easily shift, thus ensuring the stability of the filtration effect.

[0028] As a further implementation, the geotextile 8 is made of five layers of woven fabric made of polyester material, which can intercept smaller particles of impurities. The soft rubber strips play a fixing and sealing role, preventing mud and sand from entering the infiltration space from the edge of the geotextile 8.

[0029] As a further implementation, anchor points are arranged at intervals on the soft rubber strip, and the anchor points are bolted to one end of the dredging wire rope 17. A limiter 25 is installed on the dredging wire rope 17. When the geotextile 8 is lifted to a suitable slope, the limiter 25 is triggered, causing the dredging winch 16 to stop working, preventing excessive lifting from damaging the geotextile 8, and ensuring that the dredging operation can achieve the expected results.

[0030] As a further implementation, the automated control system 19 consists of two parts: a water level sensor 20 and a controller. The water level sensor 20 is a wired transmission sensor that transmits water level data to the controller in real time via a data line. The controller receives the water level data sent by the water level sensor 20 and directly controls the start and stop of the electromechanical equipment 24. The electromechanical equipment 24 controls the operation of the dredging winch 16 and the high-pressure water nozzle 18, realizing automated control of the entire dredging process without manual intervention. At the same time, it can start the dredging operation in a timely manner according to the actual water level, ensuring the normal operation of the device.

[0031] Example 2 This embodiment discloses a working method for an integrated rainwater infiltration and storage device with automatic silt removal function, such as... Figure 7 As shown, it includes: S1. Rainwater enters the inlet pipe and is collected into the infiltration and storage module 2. The water level sensor monitors the water level in the infiltration and storage module 2. As the device operates, the mud and sand particles carried by the rainwater will gradually block the pores of the geotextile 8, reducing the infiltration effect. Specifically, the rate of water level decrease will be smaller. S2. The automated control system 19 calculates and analyzes that when the blockage is severe and the water level meets the set dredging conditions, that is, when the water level drop rate is less than 0.1m / h and the water level in the reservoir 4 is less than 0.2m, the automated control system 19 will start the dredging winch 16, pull the dredging wire rope 17, lift the geotextile 8 on the bottom plate 7 and make it have a certain slope. When the limit switch 25 on the dredging wire rope 17 is triggered, the dredging winch 16 stops working. S3. The automated control system 19 starts the high-pressure water nozzle 18, using the high-pressure water jet from the nozzle 18 to flush the geotextile 8. After flushing for 5 minutes, the high-pressure water nozzle 18 stops working, flushing the mud and sand on the surface of the geotextile 8 into the basket 13 of the mud and sand collection tank 12. At this time, the filtration and infiltration capacity of the geotextile 8 are somewhat restored. The dredging winch 16 is reset, and the geotextile 8 is re-laid on the base plate 7 of the infiltration and storage module 2. S4. The automated control system 19 starts the hoisting winch 26, which pulls the suspended basket 13 via the wire rope to remove it. After replacing the geotextile 8 or cleaning the silt, the hoisting winch 26 transports the suspended basket 13 to the silt collection pool 12, completing the automatic dredging operation. The entire process requires no manual monitoring and can automatically start and stop the dredging system, greatly reducing manpower and material consumption and saving maintenance costs.

[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rainwater infiltration and storage integrated device with automatic silt removal function, characterized in that, Includes a computer room, infiltration and storage modules, and automatic sludge removal modules; The infiltration and storage module is installed underground, the machine room is located at one end of the top of the infiltration and storage module, and an inspection well is installed at the other end of the top of the infiltration and storage module. The bottom of the infiltration and storage module is provided with a base plate with a set slope, and geotextile is provided on the top of the base plate; a sediment collection pool is also provided at the bottom of the infiltration and storage module; a hanging basket is embedded in the sediment collection pool, and the bottom of the sediment collection pool is permeable concrete. The automatic dredging module includes a dredging wire rope, a dredging winch, a high-pressure water nozzle, a water level sensor, and an automated control system. The high-pressure water nozzle extends into the infiltration and storage module through the interlayer between the wire rope and the infiltration and storage module. The water level sensor is located in the sediment collection tank. One end of the dredging wire rope is connected to the geotextile, and the other end is connected to the dredging winch, which is located in the machine room. The automated control system is connected to the dredging winch, the high-pressure water nozzle, and the water level sensor.

2. The integrated rainwater infiltration and storage device with automatic silt removal function as described in claim 1, characterized in that, The infiltration and storage module has an inlet on one side connected to the inlet pipe and an overflow outlet on the other side connected to the overflow pipe.

3. The integrated rainwater infiltration and storage device with automatic silt removal function as described in claim 1, characterized in that, The inspection well is equipped with a hoisting winch and a suspended platform wire rope. The hoisting winch is connected to one end of the suspended platform wire rope, and the other end of the suspended platform wire rope is connected to the suspended platform. The suspended platform is a device with an open top and a steel frame for the rest of the structure. A steel filter screen is installed in the steel frame, and geotextile is laid on the bottom surface of the suspended platform. Tie points are set at the four corners of the upper part of the suspended platform, and the tie points are hinged to the wire rope.

4. The integrated rainwater infiltration and storage device with automatic silt removal function as described in claim 1, characterized in that, The infiltration and storage module is a square underground water tank, consisting of a bottom slab, a left side slab, a right side slab, a front side slab, a rear side slab, and a top slab. The bottom slab is made of permeable concrete; the left side slab, right side slab, front side slab, rear side slab, and top slab are all made of concrete.

5. A rainwater infiltration and storage integrated device with automatic silt removal function as described in claim 4, characterized in that, The water inlet pipe is installed on the left side plate, close to the rear side plate and the top plate, and a filter screen is installed at the front end of the water inlet of the water inlet pipe.

6. The integrated rainwater infiltration and storage device with automatic silt removal function as described in claim 4, characterized in that, The geotextile is fitted with soft rubber buckles at its edges, and anchor points are set at regular intervals on the rubber buckles.

7. The integrated rainwater infiltration and storage device with automatic silt removal function as described in claim 1, characterized in that, The geotextile is made of five layers of woven fabric made of polyester material.

8. The integrated rainwater infiltration and storage device with automatic silt removal function as described in claim 7, characterized in that, Anchor points are arranged at intervals on the soft rubber buckle, and the anchor points are bolted to one end of the dredging wire rope. Limiters are installed on the dredging wire rope.

9. A rainwater infiltration and storage integrated device with automatic silt removal function as described in claim 1, characterized in that, The automated control system consists of two parts: a water level sensor and a controller. The water level sensor is a wired transmission sensor that transmits water level data to the controller in real time via a data line. The controller receives the water level data sent by the water level sensor and directly controls the start and stop of the electromechanical equipment, which in turn controls the operation of the winch and high-pressure water nozzles.

10. The working method of an integrated rainwater infiltration and storage device with automatic silt removal function as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Rainwater enters the inlet pipe and is collected into the infiltration and storage module through the inlet pipe. The water level sensor monitors the water level in the infiltration and storage module. S2. The automated control system calculates and analyzes that when the blockage is severe and the water level meets the set dredging conditions, the automated control system will start the dredging winch, pull the dredging wire rope, lift the geotextile on the bottom plate with a certain slope, and when the limit switch on the dredging wire rope is triggered, the dredging winch will stop working. S3. The automatic control system starts the high-pressure water nozzles, using the high-pressure water jets to flush the geotextile and wash the mud and sand on the surface of the geotextile into the basket of the mud and sand collection pool. S4. The automated control system starts the hoisting winch, pulls the basket with the wire rope, removes the basket, replaces the geotextile or cleans the mud and sand. The dredging operation is completed by cleaning the mud and sand in the basket.

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