Flexible multifunctional gutter trap bag and rainwater well

Abstract

The application discloses a flexible multifunctional gutter inlet sewage interception bag and a rainwater well, and relates to the technical field of drainage. The flexible sewage interception bag is mainly made of fabric and is composed of a flow guiding area, an overflow sewage blocking area and a sedimentation, filtration and storage area which are sequentially connected. The flow guiding area is provided with an inclined flow guiding surface, and the bag opening is provided with a reinforcing ring. The overflow sewage blocking area is circumferentially provided with a plurality of overflow openings. The sedimentation, filtration and storage area is provided with a closed end away from the overflow sewage blocking area. The sewage interception bag is installed in the rainwater well by means of a hanging component arranged on the inner wall of the rainwater well or a rainwater grate. While the water passing capacity of the gutter inlet is ensured, the sewage interception bag can efficiently intercept various pollutants, reduce non-point source pollution, prevent the drainage system from being blocked, reduce the workload of dredging, prevent mosquitoes and flies from breeding and improve the urban environmental sanitation. The application can be used for the construction of various types of gutter inlets and the reconstruction of existing gutter inlets, and further provides a new method which is simple and practical, efficient in operation and low in cost for the construction and management of gutter inlets.

Description

Technical Field

[0001] This invention relates to the fields of environmental protection and outdoor drainage engineering technology, specifically to a flexible multifunctional rainwater inlet interception bag and rainwater well. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] A storm drain inlet is an outdoor drainage pipe structure that collects rainwater from the ground. It is typically a well with an inlet grate and is used in outdoor drainage projects such as municipal roads, squares, and residential areas. Before entering the storm drain inlet, rainwater flows over rooftops and the ground, forming surface runoff. This runoff washes away accumulated pollutants such as garbage, mud, dust, oil, organic matter, and heavy metals, carrying these pollutants into the drainage pipe system and downstream water bodies through the storm drain inlet. During the non-rainy season, storm drains often become accumulation points for pollutants due to sanitation work and road washing. On the one hand, these pollutants easily accumulate in storm drains and pipes, affecting the drainage capacity of the drainage system and increasing the workload of cleaning and maintenance. On the other hand, these pollutants discharged into downstream water bodies through storm drains become one of the main sources of water pollution. Furthermore, storm drains and sewers also serve as breeding grounds for mosquitoes and flies, impacting urban sanitation.

[0004] Traditionally, widely used storm drains typically rely solely on storm grates to intercept large objects, with few other pollution interception measures. Some drains are deepened, with sedimentation tanks at the bottom of the storm drain to remove some pollutants through simple sedimentation, but this increases the workload of cleaning the drain. Cleaning is time-consuming, labor-intensive, and inconvenient. This method generally has limited pollution interception effectiveness; if not cleaned promptly, it can still easily clog pipes and cause water pollution.

[0005] The main challenge currently is how to solve the aforementioned problems to the greatest extent possible while ensuring the drainage capacity of the storm drain by modifying its structure or adding a device. Currently, some technical solutions have emerged, such as adding intercepting devices to storm drains or providing prefabricated intercepting storm drains. However, existing solutions have the following main problems: 1. The main structure of the intercepting and fixing devices is generally made of rigid materials or partially of flexible materials. Either the structure is too simple, with a single function and poor interception effect; or it is composed of complex structures and devices, but still can only remove a certain type of pollutant or has low removal efficiency, resulting in unsatisfactory interception effects. 2. It is difficult to balance interception and drainage functions, which affects the drainage capacity of the storm drain to some extent, impacting drainage safety. 3. The installation, dismantling, transportation, cleaning, and maintenance of the intercepting and fixing devices are inconvenient, and the overall cost or maintenance expenses are high.

[0006] Some technical solutions employ interception devices such as interception baskets, trash racks, interception nets, and filter nets. However, due to the unreasonable shape and opening method of the main interception structure, they can only intercept large floating objects when rainwater flows through, while fine particles and pollutants such as oil can easily penetrate the interception device, resulting in low interception capacity. Other technical solutions combine complex hanging isolation devices, flow guiding devices, overflow devices, and sedimentation and filtration interception devices. These structures are generally composed of several rigid or flexible components, making them complex, but it is difficult to balance water flow capacity and interception effect, and installation and cleaning are very inconvenient. Furthermore, existing technical solutions generally lack sufficient pollutant storage space, and water blockage can easily occur as pollutants accumulate.

[0007] The existence of the above-mentioned problems has severely restricted the promotion and application of existing technical solutions, making the management of storm drains a pain point and a difficult point in the operation and maintenance of urban drainage systems and the management of the water ecological environment. Summary of the Invention

[0008] To address the shortcomings of existing technologies, the present invention aims to provide a flexible, multifunctional storm drain interception bag and storm drain well. By suspending the interception bag inside the storm drain, it effectively intercepts various pollutants entering the storm drain while ensuring water flow capacity. This is achieved through the coordinated use of the bag's three areas: a flow guiding area, an overflow interception area, and a sedimentation and filtration storage area, thus reducing non-point source pollution. It also facilitates the removal of debris from the storm drain, reducing the risk of drainage system blockage and the workload of drainage system dredging. Furthermore, it cuts off the channels for mosquitoes and flies to enter and exit the storm drain and sewers, preventing mosquito and fly breeding and improving urban environmental sanitation.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0010] In a first aspect, embodiments of the present invention provide a flexible multifunctional rainwater inlet interception bag, comprising a flexible interception body, the flexible interception body comprising a guide zone, an overflow interception zone, and a sedimentation and filtration storage zone connected in sequence, wherein the receiving interface of the guide zone is provided with a reinforcing ring for fitting the inner wall of the rainwater inlet; the overflow interception zone is provided with a plurality of overflow outlets in the circumferential direction, and the end of the sedimentation and filtration storage zone away from the overflow interception zone is a closed end.

[0011] As a further implementation, the overflow outlets distributed in the overflow interception zone form a mesh structure, or the overflow outlets are holes or gaps, which have good flow capacity and the ability to intercept floating objects, while also preventing mosquitoes and flies.

[0012] As a further implementation, the sedimentation and filtration storage area is formed in the shape of a trough with a closed bottom. It is made of a permeable material with good water permeability and excellent filtration and interception capabilities for pollutants. This area has no mesh, holes, or gaps to prevent fine particulate pollutants from penetrating the interception device. This area removes pollutants through sedimentation and filtration, while providing ample storage space for the intercepted pollutants.

[0013] As a further implementation, the diversion zone has a diversion surface inclined towards the overflow interception zone. The diversion zone is made of permeable or impermeable material and has no mesh, holes, or gaps to prevent the loss of pollutants such as fine particles. This zone has the functions of diversion, sealing, and fixation, guiding rainwater and sewage into the middle and lower treatment zone for further treatment.

[0014] As a further implementation, the reinforcing ring forms a closed structure along the circumference of the flow guide area's receiving interface. The reinforcing ring can cooperate with the suspension component to fix and suspend the intercepting bag inside the rainwater inlet and fit tightly against the side wall of the rainwater inlet. At the same time, it reinforces the opening of the intercepting bag and transmits the gravity and water flow impact force on the intercepting bag.

[0015] As a further implementation, all the larger openings of the aforementioned intercepting bags are on the side, and the bag opening is completely sealed to the side wall of the rainwater inlet. Therefore, garbage and particulate pollutants entering the rainwater inlet during the dry season will not leak directly through the mesh. During the rainy season, rainwater containing fine particulate pollutants first flows into the lower part of the intercepting bag for sedimentation and filtration, and only the relatively clean rainwater overflows through the side of the middle part of the intercepting bag. Therefore, the intercepting bag also has a high interception efficiency for fine particulate matter.

[0016] As a further implementation, the fabric that makes up the main body of the intercepting bag has a strong adsorption capacity for oil stains and other pollutants. It can adsorb organic and inorganic pollutants such as phlegm stains and oil stains. These pollutants can be further removed by cleaning and disposing of the contaminated intercepting bags in a centralized manner.

[0017] As a further implementation, since the intercepting bags are suspended and have good water and air permeability, the intercepted pollutants can be naturally dehydrated and dried after a period of time following rain. The intercepting bags can then be removed and the intercepted garbage can be directly dumped into a garbage truck for centralized transportation and disposal of the intercepted pollutants.

[0018] As a further implementation method, the intercepting bag completely seals the rainwater inlet, and the small mesh on the side can effectively block mosquitoes and flies from entering and exiting the sewer through the rainwater inlet, thereby improving the urban sanitation environment.

[0019] As a further implementation, a certain distance is maintained between the lower part of the intercepting bag and the side wall of the rainwater inlet, and the opening of the rainwater inlet's drain pipe is not obstructed. The intercepting bag as a whole has good water permeability, the overflow area of ​​the side outlet is large enough, and the lower part of the intercepting bag has a large storage capacity for garbage. With timely cleaning, the overflow capacity of the middle outlet will not be affected. Therefore, the flow capacity of the rainwater inlet can be fully guaranteed.

[0020] As a further implementation, the flexible intercepting body is equipped with a label or tag on its side, which can indicate relevant information about the intercepting bag, facilitating information management and product traceability, while also serving as an anti-theft measure. The materials used to make the intercepting bag itself have virtually no other value, therefore it is not easily stolen or lost.

[0021] Secondly, embodiments of the present invention also provide a rainwater well equipped with the aforementioned flexible multifunctional rainwater inlet interception bag.

[0022] As a further implementation, the rainwater well can be a flat grate type, a side-ditch type, a combined type, or a vertical grate type, and the rainwater inlet interception bag is fixed to the inner wall of the rainwater well by a suspension component. When the rainwater well is newly built, the suspension component can be directly pre-embedded in the inner wall or well opening of the rainwater well; when an existing rainwater well is renovated, the suspension component can be fixed to the inner wall or well opening of the rainwater well by expansion bolts.

[0023] Alternatively, the rainwater well is equipped with a rainwater grate with a hanging component, the hanging component being a hook-shaped structure; multiple hanging components are spaced apart along the bottom frame of the rainwater grate and are integrally formed with the rainwater grate. In this way, the rainwater grate with the hanging component, in conjunction with the intercepting bag, allows for easier installation of the intercepting bag on flat grate and off-center ditch-type rainwater inlets.

[0024] As a further implementation, when the rainwater inlet is a double-grate or multi-grate rainwater inlet, two or more intercepting bags can be installed in the rainwater well according to the number of rainwater grates, thereby adapting to the needs of various forms and larger specifications of rainwater inlets.

[0025] As a further implementation, the rainwater well is equipped with the aforementioned flexible multi-functional rainwater inlet interception bag, which changes the flow pattern of water within the rainwater well. While ensuring the water flow capacity of the rainwater well, it adds multiple functions such as interception of various pollutants and prevention of mosquito and fly breeding, providing a new method for the construction and management of rainwater inlets.

[0026] The beneficial effects of this invention are as follows:

[0027] (1) The flexible multifunctional rainwater inlet intercepting bag provided by this invention fully utilizes the reasonable overall structure and material properties of the fabric to guide the flow of rainwater. It removes various pollutants through hydraulic and physical processes such as interception, sedimentation, filtration, and adsorption. It can effectively intercept large floating objects, fine particles, oil stains, and other organic and inorganic pollutants entering the rainwater inlet at the source, thereby reducing non-point source pollution and improving water quality. Compared with existing technologies, the rainwater inlet intercepting bag of this invention removes a wider variety of pollutants with a significantly improved removal rate. In particular, by utilizing the adsorption effect of the flexible fabric fibers, it can remove oil stains, heavy metals, and other pollutants that are difficult to intercept from rainwater. By collecting and washing the cleaned intercepting bags, and discharging and treating the wastewater centrally, even these important pollutants that are difficult to intercept can be effectively removed.

[0028] (2) The multifunctional rainwater inlet interception bag of the present invention can effectively intercept garbage falling into the rainwater inlet during the dry season and floating objects and particulate matter carried by rainwater runoff during the rainy season, thereby protecting the drainage system from being blocked by garbage, reducing pipe siltation, ensuring smooth drainage, and reducing the workload of cleaning and dredging the drainage system.

[0029] (3) This invention makes reasonable use of the structure and internal space of the rainwater well, and selects to suspend and install rainwater inlet interceptor bags to avoid obstructing the opening of the rainwater inlet drain pipe; it utilizes the good water permeability of the fabric to reasonably set the size of the interceptor bag and the overflow port to ensure the flow capacity of the interception device; the lower part of the interceptor bag has a large storage capacity for garbage, which can prevent garbage accumulation and blockage. Therefore, by installing the aforementioned interceptor bag, the flow capacity of the rainwater inlet can be fully guaranteed while achieving interception, avoiding the problem of the prior art not being able to achieve both well.

[0030] (4) Because the intercepting bag is suspended and has good water and air permeability, the pollutants intercepted can naturally dehydrate and dry after a period of time following rain, which is very convenient for the later transportation and disposal of pollutants. All the intercepted garbage is stored in the intercepting bag. The cleaning work can be completed simply by taking out the intercepting bag and dumping the garbage into the transport vehicle, which greatly reduces the workload of cleaning the rainwater inlet.

[0031] (5) By installing intercepting bags, mosquitoes and flies can be effectively blocked from entering and exiting the sewer through rainwater inlets, thereby improving the urban sanitation environment and reducing the spread of infectious diseases. This function is not available in most existing rainwater inlet interception technologies such as intercepting baskets.

[0032] (6) The main body of the intercepting bag is a flexible structure, which is simple and lightweight and can be folded and stacked. The processing, storage and transportation costs in the production process are low, and the installation, disassembly, cleaning and disposal in the use process are very convenient. It can be recycled and centrally disposed of, realizing standardized and factory-style operation and management.

[0033] (7) By setting information labels and signs at the opening of the intercepting bags, relevant information about the intercepting bags can be indicated. The maintenance managers of urban storm drains can record and query information on the installation and cleaning of the intercepting bags, which facilitates information-based and refined management. At the same time, it can realize product traceability and play a role in preventing theft.

[0034] (8) The intercepting bag provided by the present invention can be used for the installation of new and prefabricated rainwater inlets of various types and specifications, such as single grate, double grate and multi-grate rainwater inlets, flat grate type, side ditch type, combined type and vertical grate type rainwater inlets, as well as the renovation of existing rainwater inlets, and has strong applicability.

[0035] (9) The present invention provides a rain grate with a hook-shaped suspension component, which, when used in conjunction with a sludge interception bag, enables the sludge interception bag to be installed more conveniently on flat grate and off-center ditch rainwater inlets, further reducing construction costs.

[0036] (10) The flexible multifunctional storm drain interception bag and storm drain well provided by the present invention can be widely promoted and applied and standardized in design, providing a new construction, operation and maintenance management model that is simple, practical, efficient and low cost for the construction and management of urban storm drains. Attached Figure Description

[0037] 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.

[0038] Figure 1 This is a structural schematic diagram of the present invention according to one or more embodiments;

[0039] Figure 2 yes Figure 1 AA section view;

[0040] Figure 3 yes Figure 1 BB cross-sectional view.

[0041] The components include: 1. Diversion area; 2. Overflow interception area; 3. Sedimentation, filtration and storage area; 4. Suspension components; 5. Rain grate; 6. Rain inlet; 7. Marking plate; 8. Drain pipe; and 9. Reinforcing ring. Detailed Implementation

[0042] Example 1:

[0043] This embodiment provides a flexible, multifunctional rainwater inlet interception bag, such as Figures 1-3As shown, it includes a flexible intercepting body made of flexible fabric, which can guide the flow of rainwater and remove pollutants through hydraulic and physical action by utilizing the properties of the fabric. The flexible intercepting body includes a flow guiding zone 1, an overflow intercepting zone 2, and a sedimentation, filtration, and storage zone 3 connected in sequence.

[0044] Although the flexible interceptor body is made of flexible fabric, different requirements are placed on the flexible fabric in the three areas of the flexible interceptor body to ensure the best interception effect. In this embodiment, the flow guiding area 1 is made of water-permeable or water-impermeable fabric; the overflow interception area 2 is made of woven mesh, perforated cloth or other flexible materials with holes, gaps or mesh-like structure with good water permeability and interception capacity; and the sedimentation filtration and storage area 3 is made of fabric with good water permeability and filtration performance.

[0045] The port of the flow guiding area 1 facing the rain grate 5 is a receiving interface. The receiving interface is equipped with a reinforcing ring 9. The reinforcing ring 9 enables the intercepting bag to fit against the inner wall of the rainwater inlet 6, maximizing the flow of rainwater from the rainwater inlet into the overflow intercepting area 2 and the sedimentation and filtration storage area 3, and preventing the rainwater from seeping into the rainwater inlet 6 from between the intercepting bag and the inner wall of the rainwater inlet 6; thus playing a role in fixing, sealing and guiding the flow.

[0046] In this embodiment, the flow guiding area 1 has a flow guiding surface that is inclined toward the overflow interception area 2, forming a funnel shape. That is, the receiving interface size of the flow guiding area 1 is larger than the connection end size of the flow guiding area 1 and the overflow interception area 2, so as to guide the rainwater and maintain sufficient flow space between the water passage area of ​​the interception bag (overflow interception area 2) and the side wall of the rainwater outlet. In addition, its strong water passage capacity ensures that the water collection capacity of the rainwater outlet is not affected.

[0047] The shape of the reinforcing ring 9 is adapted to the receiving interface of the flow guiding area 1. The receiving interface wraps around the reinforcing ring 9 on the inside, providing support for the receiving interface. The receiving interface can be circular, square, or other shapes. The reinforcing ring 9 can cooperate with the suspension component 4 to achieve the suspension and fixation of the sludge bag through the suspension component 4.

[0048] Multiple suspension components 4 are distributed circumferentially along the reinforcing ring 9. In this embodiment, one end of the suspension component 4 has a hook-shaped structure, which can hold the reinforcing ring 9. The other end of the suspension component 4 can be driven into the inner wall of the rainwater inlet or fixed to the rainwater grate 5, so that the intercepting bag can be suspended at different positions inside the rainwater inlet 6 as needed. The suspension component 4 not only reinforces the intercepting bag, but also transmits the gravity and water flow impact force on the intercepting bag.

[0049] When the suspension component 4 is fixed to the rain grate 5, the suspension component 4 can be integrally formed with the rain grate 5 and distributed on the base of the rain grate 5, which facilitates the hanging of the sewage bag.

[0050] In this embodiment, the overflow interception zone 2 serves as the middle section and can be cylindrical, cuboid, or other shapes. The overflow interception zone 2 has several overflow outlets circumferentially arranged. These outlets can be implemented in various forms; for example, the overflow outlets distributed on the sides of the overflow interception zone 2 can form a mesh structure, or the overflow outlets can be holes or gaps opened in the overflow interception zone 2. The overflow interception zone 2 has good flow capacity and the ability to intercept floating debris, while also preventing mosquitoes and flies.

[0051] One end of the sedimentation, filtration and storage area 3 is fixed to the overflow interception area 2, and the other end is a closed end. It is used to intercept solid pollutants such as floating matter and particulate matter through sedimentation and filtration, and to store the intercepted pollutants.

[0052] The flexible intercepting body of this embodiment is provided with a marking plate 7 on its side, which is used to indicate the product's specifications, size, material, product number, production date, precautions, barcode or QR code and other necessary information, so as to facilitate the sale, operation and maintenance management of the intercepting device, and also to prevent the intercepting bag from being stolen or lost through product traceability.

[0053] The working principle of this embodiment is as follows:

[0054] When it is not raining, due to road sweeping, washing or other human or non-human reasons, a certain amount of garbage, sputum or even swill may enter the rainwater inlet 6 through the rainwater grate 5. The intercepting bag of this embodiment can directly receive and intercept this garbage and pollutants, and store them in the sedimentation and filtration storage area 3 at the bottom of the intercepting bag or adsorb them on the fabric of the intercepting bag.

[0055] During rainfall, rainwater washes various pollutants from the ground up through runoff and enters the rainwater inlet 6 via the rainwater grate 5. Rainwater flows through the guide zone 1 of the intercepting bag into the sedimentation and filtration storage zone 3. During this process, some rainwater is filtered by the fabric and flows into the rainwater well, where solid pollutants are intercepted on the fabric surface. As rainfall increases, the water depth at the bottom of the intercepting bag gradually increases, and solid particles are also removed through sedimentation. Relatively clean rainwater exceeding the permeability of the bottom of the intercepting bag overflows through the side of the overflow intercepting zone 2, where floating debris and larger solid pollutants are intercepted by its mesh structure. The pollutants intercepted through the above process are stored in the sedimentation and filtration storage zone 3, while organic pollutants such as grease are adsorbed onto the fabric fibers and removed.

[0056] Because the opening area of ​​the overflow interception zone 2 and the flow area between the interception bag and the side wall of the rainwater inlet 6 are large enough, the interception bag does not block the opening of the drain pipe 8, thus ensuring the flow capacity of the rainwater inlet 6. Because the sedimentation and filtration storage zone 3 has a large storage capacity, timely cleaning will prevent the intercepted pollutants from significantly affecting the drainage capacity.

[0057] After a period of time following rain, the intercepting bags, due to their suspended installation and good water and air permeability, allow the trapped pollutants to naturally dehydrate and dry, facilitating subsequent cleaning, transportation, and disposal. After several rainfalls or over a period of time, when the amount of pollutants trapped in the intercepting bags reaches a certain level, the bags can be removed from the rainwater inlet 6, and the waste inside can be directly poured into a collection vehicle and transported to a centralized waste disposal center for further harmless treatment. Lightly contaminated intercepting bags can be reinserted into the rainwater inlet 6, or new intercepting bags can be replaced. Contaminated intercepting bags can be transported to a centralized disposal point for cleaning for reuse. The wastewater from the centralized cleaning of the intercepting bags is treated at a sewage treatment plant or separately, effectively removing organic and inorganic pollutants such as oil adsorbed on the fabric of the intercepting bags, ultimately achieving the goal of eliminating non-point source pollution.

[0058] This embodiment can achieve the following effects:

[0059] (1) By installing the storm drain interceptor bag of this invention, the flow of rainwater can be guided, and various pollutants entering the storm drain 6 can be removed by hydraulic and physical actions such as interception, sedimentation, filtration, and adsorption. This effectively intercepts large floating objects, fine particles, oil stains, and other organic and inorganic pollutants entering the storm drain 6 at the source, achieving the goal of reducing non-point source pollution and improving water quality. In particular, by utilizing the adsorption effect of flexible fabric fibers, pollutants that are difficult to intercept, such as oil stains and heavy metals, in rainwater can be removed. By collecting and washing the cleaned interceptor bags, and discharging and treating wastewater centrally, these important pollutants that are difficult to intercept can also be effectively removed. This protects the drainage system from blockage by garbage, reduces pipe siltation, ensures smooth drainage, and reduces the workload of cleaning and dredging the drainage system.

[0060] (2) The main body of the intercepting bag has good water permeability and will not block the opening of the rainwater inlet drain pipe 8. The overflow outlet size and the distance between the intercepting bag and the well wall can ensure the flow capacity of the rainwater inlet. The lower part of the intercepting bag has a large storage capacity for garbage, which can prevent garbage accumulation from causing blockage. While achieving interception of sewage, the flow capacity of the rainwater inlet can be fully guaranteed.

[0061] (3) Because the intercepting bag is suspended and has good water and air permeability, the pollutants intercepted can naturally dehydrate and dry after a period of time following rain, which is very convenient for the later transportation and disposal of pollutants. All the intercepted garbage is stored in the intercepting bag. The cleaning work can be completed simply by taking out the intercepting bag and dumping the garbage into the transport vehicle, which greatly reduces the workload of cleaning the rainwater inlet.

[0062] (4) By installing intercepting bags, mosquitoes and flies can be effectively blocked from entering and exiting the sewer through rainwater inlets, thereby improving the urban sanitation environment and reducing the spread of infectious diseases.

[0063] (5) The main body of the intercepting bag is a flexible structure, which is simple and lightweight and can be folded and stacked. The processing, storage and transportation costs in the production process are low, and the installation, disassembly, cleaning and disposal in the use process are very convenient. It can be recycled and centrally disposed of, realizing standardized and factory-style operation and management.

[0064] (6) By setting information labels and signs at the opening of the intercepting bags, relevant information about the intercepting bags can be indicated. The maintenance managers of urban storm drains can record and query information on the installation and cleaning of the intercepting bags, which facilitates information-based and refined management. At the same time, it can also enable product traceability and play a role in preventing theft.

[0065] (7) The intercepting bag provided by the present invention can be used for single-grate, double-grate and multi-grate rainwater inlets, as well as various types and specifications of rainwater inlets such as flat grate type, side ditch type, combined type and vertical grate type. It can be used for the installation of newly built and prefabricated rainwater inlets, as well as for the renovation of existing rainwater inlets. The application scenarios are very wide.

[0066] Example 2:

[0067] This embodiment provides a rainwater well, and the rainwater inlet of the rainwater well is equipped with a rainwater inlet intercepting bag as described in Embodiment 1. The intercepting bag is fixed to the inner wall of the rainwater inlet 6 or the rainwater grate 5 by a suspension component 4.

[0068] like Figure 1-3 As shown, the rainwater inlet 6 is connected to the drain pipe 8, and the intercepting bag is suspended inside the rainwater inlet 6 by the suspension component 4. The upper opening of the intercepting bag is adapted to the size of the rainwater inlet 6 and closes the upper opening of the rainwater well 6. The middle and lower part of the intercepting bag maintains a certain distance from the well wall of the rainwater inlet 6, and the lower part of the intercepting bag does not block the opening of the drain pipe 8.

[0069] The suspension component 4 is made of metal with a certain strength and corrosion resistance. It is generally hook-shaped and provides a hanging fixing point for the intercepting bag. It also transfers the weight and water flow impact force borne by the intercepting bag to the well wall of the rainwater inlet 6 or the rainwater grate 5.

[0070] When the suspension component 4 is fixed to the inner wall of the rainwater inlet 6, such as Figure 2 , Figure 3 As shown, the suspension component 4 can be directly embedded in the inner wall of the rainwater inlet 6, or it can be installed on the inner wall of the rainwater inlet 6 later using expansion bolts. This installation method is suitable for various types of rainwater inlets, such as flat grate type, off-center grate type, combined type, and vertical grate type.

[0071] When the suspension component 4 is fixed to the rain grate 5, this embodiment provides a rain grate with hook-shaped suspension components. Multiple suspension components 4 are spaced apart along the bottom surface of the rain grate 5 and are integrally formed with it. This installation method is suitable for flat grate and off-center ditch rainwater inlets. It only requires cooperation with the rain grate 5 with the suspension component 4 to install the intercepting bag, further reducing the amount of installation work and construction costs. At the same time, under this installation method, the opening of the intercepting bag fits more tightly with the rainwater well. Without obstructing the rainwater outlet pipe, the size of the intercepting bag can be increased to further increase the interception capacity and flow capacity.

[0072] When the rainwater inlet is a double-grate or multi-grate rainwater inlet, two or more intercepting bags can be installed in the rainwater well according to the number of rainwater grates 5, so as to meet the needs of various types and larger specifications of rainwater inlets.

[0073] The working principle of this embodiment is as follows:

[0074] Rainwater passes through the rain grate 5, flows into the interceptor bag via the guide zone 1, and is partially filtered through the sedimentation and filtration storage zone 3. More rainwater, after sedimentation, overflows through the overflow interception zone 2 and is then discharged through the drain pipe 8. Pollutants entering the rainwater inlet 6 are trapped inside the interceptor bag and stored in the sedimentation and filtration storage zone 3. Regular cleaning or replacement of the interceptor bag removes pollutants from the drainage system and ensures its smooth operation.

[0075] This embodiment can achieve the following effects:

[0076] (1) After the intercepting bag is installed in the rainwater inlet 6, its structure and function are more complete compared with the existing technical solutions. While ensuring drainage capacity, the intercepting function is added, which can efficiently intercept a variety of pollutants and reduce non-point source pollution; prevent the drainage system from being blocked and reduce the amount of dredging work; prevent the breeding of mosquitoes and flies and improve urban environmental sanitation.

[0077] (2) The rainwater inlet 6 can be easily used with the intercepting bag by installing the suspension component 4. The weight and water flow impact force borne by the intercepting bag can be transferred to the well wall of the rainwater inlet 6 or the rainwater grate 5.

[0078] (3) The installation of the suspension component 4 of the rainwater inlet 6 is very convenient and can be applied to the construction of new rainwater inlets of various types, such as single grate, double grate and multi-grate, flat grate, side ditch, combined and vertical grate, as well as the renovation of existing rainwater inlets.

[0079] (4) This embodiment can be widely promoted and standardized, providing a new construction, operation and maintenance management model that is simple, practical, efficient and low cost for the construction and management of urban storm drains.

[0080] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flexible multi-functional catch basin bag for storm drains, characterized by, The flexible sewage interception body comprises a flow guiding area, an overflow sewage interception area and a sedimentation filtration storage area connected in sequence; the flow guiding area has a flow guiding surface inclined toward the overflow sewage interception area; the flow guiding area is made of water-permeable or water-impermeable material; the receiving port of the flow guiding area is provided with a reinforcing ring for fitting the inner wall of the rainwater inlet; the overflow sewage interception area is composed of a mesh, a mesh hole cloth or other flexible water-permeable materials with holes, gaps or a mesh structure; the sedimentation filtration storage area is composed of a fabric with good water permeability and filtration performance; the end of the sedimentation filtration storage area away from the overflow sewage interception area is a closed end. The reinforcing ring forms a closed structure along the circumference of the receiving port of the flow guiding area, and the reinforcing ring can cooperate with the hanging component. The sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well.

2. The flexible multi-functional gutter trap gully bag according to claim 1, wherein, The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps.

3. The flexible multi-functional gutter trap gully bag according to claim 1, wherein, The flexible sewage interception body is provided with a marker on the side thereof.

4. A stormwater well, characterized in that The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well.

5. A stormwater pit according to claim 4, wherein, The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps. The flexible sewage interception body is provided with a marker on the side thereof. The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well. The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps. The flexible sewage interception body is provided with a marker on the side thereof. The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well. The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps. The flexible sewage interception body is provided with a marker on the side thereof. The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well. The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps. The flexible sewage interception body is provided with a marker on the side thereof. The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well. The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps. The flexible sewage interception body is provided with a marker on the side thereof. The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well. The overflow openings of the overflow sewage interception area form a mesh structure, or the overflow openings are holes or gaps. The flexible sewage interception body is provided with a marker on the side thereof. The rainwater inlet sewage interception bag is hung in the rainwater well, and the upper opening thereof is adapted to the size of the rainwater well; the overflow sewage interception area and the sedimentation filtration storage area are kept at a set distance from the wall of the rainwater well. The

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