In-well sewage intercepting device for drainage system and using method
By installing intercepting frames and filter screens inside the well, the problem of debris clogging in the drainage system is solved, achieving convenient debris cleaning and improved rainwater purification.
Patent Information
- Application Number
- CN202511905990.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-02-24
AI Technical Summary
In existing drainage systems, debris easily enters drainage pipes and rainwater wells, leading to blockages, high purification costs, and significant cleaning difficulties.
Design a well interception device, including an interception frame and a filter screen frame, which are installed in the well body by a detachable connection. The filter screen frame intercepts debris in the first area, and water flows into the second area. It can be quickly disassembled and installed for cleaning.
It reduces the risk of blockage in the overall drainage system, improves rainwater purification, has a simple structure, is easy to install and disassemble, and is convenient for cleaning up debris.
Smart Images

Figure CN121556575A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of drainage pipeline technology, and in particular relates to a sewage interception device for drainage systems and its usage method. Background Technology
[0002] In existing technologies, rainwater washes away the ground, and metabolic residues from plants and trees in green belts, as well as road debris, flow into storm drains. However, some debris still enters drainage pipes and storm drains, eventually accumulating in rainwater collection tanks. This results in existing drainage systems having poor interception efficiency, leading to high costs for subsequent rainwater purification treatment. Furthermore, the overall drainage system is prone to blockage and malfunction due to debris accumulation, and debris removal is extremely difficult. Summary of the Invention
[0003] To solve the above-mentioned technical problems, the present invention provides a sewage interception device and a method of use for drainage systems, which effectively improves the sewage interception capacity of the well body. As the well body serves as a carrier for connecting drainage pipes, it is particularly suitable for reducing the risk of blockage in the overall drainage system. Furthermore, the debris intercepted in the well body is easy to clean and can also improve the rainwater purification effect.
[0004] The technical solution adopted in this invention is: a sewage interception device for a drainage system, installed in a well with an inlet and an outlet, including a sewage interception frame, which is detachably connected to the well body, and the sewage interception frame has a fixed structure along the circumference; a filter screen frame, which is detachably connected to the sewage interception frame, and divides the interior of the sewage interception frame into a first area corresponding to the inlet and a second area corresponding to the outlet. At least some debris is retained in the first area by the filter screen frame, and the filter screen frame is selectively connected to the sewage interception frame through the fixed structure to adjust the position of the second area relative to the sewage interception frame.
[0005] Furthermore, the fixed structure is a positioning frame connected to the sludge interception frame, and the filter screen frame can be selectively inserted into the positioning frame along the circumference.
[0006] Furthermore, the positioning frame has multiple adjustment holes along the circumference, and the filter frame is provided with a first connector to be inserted into the corresponding adjustment hole.
[0007] Furthermore, a central insertion hole is provided at the end of the intercepting frame, and a second connector is provided on the filter screen frame to be inserted into the central insertion hole.
[0008] Furthermore, the intercepting frame is equipped with a plug-in part, and the inside of the well body is equipped with a limiting part, with the plug-in part and the limiting part fitting together to lock in place.
[0009] Furthermore, the intercepting frame includes a first frame, a second frame, and a connecting rod. The first frame and the second frame are spaced apart and connected by the connecting rod. The interval between the first frame and the second frame corresponds to the inlet and outlet of the water. The first frame and / or the second frame have a fixed structure.
[0010] Furthermore, the first frame is annular, and the second frame includes annular side frames and end frames connected thereto. The annular side frames are connected to the connecting rod. The filter screen includes a fan-shaped end screen, two side screens, and a central rod. The two side screens are respectively connected to the corresponding radial sides of the fan-shaped end screen. The central rod is connected between the two side screens. The fan-shaped end screen is selectively inserted into the first frame through a fixing structure. The central rod is inserted into the center position of the end frame.
[0011] On the other hand, the present invention also provides a method of using an in-well interceptor for a drainage system, comprising the following steps:
[0012] Adjust the installation angle of the filter screen frame inside the intercepting frame according to the location of the water outlet and fix it with a fixing structure. The intercepting frame is installed inside the well.
[0013] During drainage, water and debris enter the interception frame from the inlet, at least some of the debris is intercepted by the filter screen in the first area, and the water flows into the second area and out from the outlet.
[0014] When cleaning is required, remove the trap and filter screen for cleaning.
[0015] The advantages and positive effects of this invention are: by adopting the above technical solution, the risk of blockage in the overall drainage system can be reduced and the rainwater purification effect can be improved; it has the advantages of simple structure, convenient installation and disassembly, and convenient cleaning of debris. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the elevation structure of one embodiment of the present invention;
[0017] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;
[0018] Figure 3 This is a three-dimensional structural diagram of the well body in one embodiment of the present invention;
[0019] Figure 4 This is a schematic diagram of the planar structure of the well body in one embodiment of the present invention;
[0020] Figure 5 This is a schematic diagram of the structure of the dirt-catching frame in one embodiment of the present invention;
[0021] Figure 6 This is an enlarged structural schematic diagram of the positioning frame in one embodiment of the present invention;
[0022] Figure 7 This is a schematic diagram of the filter frame structure in one embodiment of the present invention;
[0023] Figure 8This is a schematic diagram of the connection between the first connector and the positioning frame in one embodiment of the present invention;
[0024] Figure 9 This is a schematic diagram of the connection between the shaft rod, which serves as the second connector, and the dirt-catching frame in one embodiment of the present invention.
[0025] In the picture:
[0026] 1. Well body; 2. Limiting part; 11. Inlet; 12. Outlet; 3. Sewage interception frame; 4. Insertion part; 5. Handle; 6. Filter screen frame; 31. First frame; 32. Connecting rod; 33. Annular side frame; 34. End frame; 35. Positioning frame; 61. Fan-shaped end screen frame; 62. Side screen frame; 63. Shaft rod; 64. Handle; 65. First insertion part. Detailed Implementation
[0027] The embodiments of the present invention will now be described with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.
[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar units or units having the same or similar functions throughout.
[0029] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it should be understood that terms such as "installation," "connection," and "fixing" should be interpreted broadly, and can refer to direct connection, installation, or fixing, or indirect connection, installation, or fixing. The present invention does not impose any limitations in this regard.
[0030] like Figures 1 to 9As shown, this is a schematic diagram of an embodiment of a sewage interception device for a drainage system according to the present invention. The device is installed inside a well body 1 having an inlet 11 and an outlet 12. The sewage interception device includes a sewage interception frame 3, which is detachably connected to the well body 1 and has a fixed structure along its circumference; and a filter screen 6, which is detachably connected to the sewage interception frame 3 and divides the interior of the sewage interception frame 3 into a first region corresponding to the inlet 11 and a second region corresponding to the outlet 12. At least some debris is retained in the first region by the filter screen 6. The filter screen 6 is selectively connected to the sewage interception frame 3 through the fixed structure to adjust the position of the second region relative to the sewage interception frame 3. The fixed structure enables adjustable connection between the intercepting frame 3 and the filter screen 6, allowing the second area to be adjusted according to the relative position of the inlet 11 and outlet 12 of the well body 1. This adapts to different well body 1 structures, improves the flexibility and reliability of interception, reduces the risk of blockage in the overall drainage system, and improves the rainwater purification effect. Moreover, when cleaning debris, it is only necessary to open the well cover on the top of the well body 1 and remove the intercepting frame 3 and the filter screen 6 for quick cleaning. Installation and disassembly are convenient.
[0031] The fixed structure is a positioning frame 35 connected to the intercepting frame 3, and the filter screen frame 6 can be selectively inserted into the positioning frame 35 along the circumference. The fixed structure provides circumferential insertion points, making the filter screen frame 6 easy and stable to install, and effectively preventing the filter screen frame 6 from shifting due to water flow impact, thus ensuring the rainwater filtration effect.
[0032] The positioning frame 35 has multiple adjustment holes along its circumference, and the filter screen frame 6 is provided with a first connector 65 to be inserted into the corresponding adjustment hole. Through the cooperation of the adjustment holes and the first connector 65, the filter screen frame 6 can be finely adjusted at multiple angles, ensuring that the outlet 12 is always within the coverage area of the filter screen frame 6. This is especially suitable for situations where the axes of the inlet 11 and the outlet 12 are not on the same straight line, and can be applied to various complex pipe layouts. When there is a certain angle between the inlet 11 and the outlet 12, the first connector 65 of the filter screen frame 6 can also be inserted into the corresponding adjustment hole to adjust the angle, always keeping the outlet 12 inside the filter screen frame 6, effectively isolating upstream rainwater impurities.
[0033] A central insertion hole is provided at the end of the intercepting frame 3, and a second connector is provided on the filter screen frame 6 to be inserted into the central insertion hole. Preferably, there are at least two first connectors 65. A stable three-point fixing structure can be formed by multiple first connectors 65 and second connectors, which enhances the stability of the filter screen frame 6, prevents it from tilting or flipping, reduces the risk of the filter screen frame 6 becoming unbalanced due to the accumulation of debris, and ensures rainwater filtration efficiency.
[0034] The intercepting frame 3 is provided with a plug-in part 4, and the well body 1 is provided with a limiting part 2. The plug-in part 4 and the limiting part 2 are fitted together to lock together, which can prevent the intercepting frame 3 from rotating or shifting under the impact of water flow, and ensure the long-term accurate positioning of the filter screen frame 6 and the outlet 12.
[0035] The intercepting frame 3 includes a first frame 31, a second frame, and a connecting rod 32. The first frame 31 and the second frame are spaced apart and connected by the connecting rod 32. The gap between the first frame 31 and the second frame corresponds to the inlet 11 and the outlet 12. In this embodiment, the first frame 31 has a fixed structure. In other embodiments, the second frame can also be made into a positioning frame 35 with a fixed structure. The gap allows debris to enter the intercepting frame 3. The gap between the first frame 31 and the second frame forms corresponding channels for the inlet 11 and the outlet 12. It cooperates with the adjustable-angle filter screen 6 to improve the applicability to different well body 1 structures and also provides an unobstructed channel for large debris to enter the intercepting frame 3, improving the debris capture rate and reducing the risk of blockage in the overall drainage system.
[0036] In this embodiment, the well body 1 is a general circular well body 1, and the positioning frame 35 is an annular positioning frame 35.
[0037] In this embodiment, the shape and size of the intercepting frame 3 are adapted to the inner wall of the well body 1. The intercepting frame 3 is a cage-like structure with an open top, which facilitates the installation and removal of the filter screen frame 6. The first frame 31 is annular, and the second frame includes an annular side frame 33 and a circular end frame 34 connected thereto. A central insertion hole is opened at the center of the circular end frame 34 to insert a second connector. The annular side frame 33 is connected to the connecting rod 32. The filter screen frame 6 includes a fan-shaped end screen frame 61, two side screen frames 62 and a central rod 63. The two side screen frames 62 are respectively connected to the corresponding radial sides of the fan-shaped end screen frame 61. The central rod 63 is connected between the two side screen frames 62. The fan-shaped end screen frame 61 and the first frame 31 are selectively inserted through a fixing structure. The central rod 63 can be used as a second connector to be inserted into the center position of the end frame 34. Preferably, the positioning frame 35 is connected to the bottom of the first frame 31.
[0038] In this embodiment, the top of the well body 1 is open, and the top of the well body 1 is detachably connected to the well cover. The side of the well body 1 is provided with an inlet 11 and an outlet 12. The intercepting frame 3 is hollow at the inlet 11 and outlet 12 of the well body 1. The first frame 31 is made into the upper main body of the intercepting frame 3, and the second frame is made into the lower main body of the intercepting frame 3. The two horizontal straight edges of the fan-shaped end mesh frame 61 extend and are provided with first plug-in members 65. The shaft rod 63 is vertically set and its bottom end extends to form a second plug-in member. The intercepting frame 3 is provided with a handle 5 and the handle 5 is connected to the first frame 31. The filter mesh frame 6 is provided with a pull handle 64 and the pull handle 64 is connected to the fan-shaped end mesh frame 61. The handle 5 and the pull handle 64 are provided to facilitate the separate or overall lifting of the intercepting frame or the filter mesh frame 6 for cleaning, simplifying the cleaning process and reducing maintenance time and cost.
[0039] Preferably, the limiting part 2 is a limiting block connected to the bottom of the well body 1. There are multiple limiting parts 2, symmetrically arranged with the center of the bottom of the well body 1 as the center. For example, four limiting parts 2 are arranged in a cross-shaped symmetrical arrangement with the center of the bottom of the well body 1 as the center, which can better restrict the horizontal rotation of the intercepting frame 3 within the well body 1. The limiting part 2 is integrally formed with the well bottom or well wall, enhancing stability. The insertion part 4 is a bracket connected to the circular end frame 34, and there are four brackets symmetrically arranged. The bracket can support the intercepting frame 3 and hold a corresponding limiting part 2 between adjacent brackets. The intercepting frame has a railing-style hollow structure, which allows for rapid drainage when it is removed for cleaning and also allows debris to remain in the first area. In another embodiment, a fine-mesh filter screen can be added to the surface of the intercepting frame 3 and the filter screen frame 6 as needed.
[0040] On the other hand, the present invention also provides a method of using an in-well interceptor for a drainage system, comprising the following steps:
[0041] According to the orientation of the outlet 12, adjust the installation angle of the filter screen frame 6 in the intercepting frame 3 and fix it with the fixing structure to install the intercepting frame 3 in the well body 1;
[0042] During drainage, water and debris enter the intercepting frame 3 from the inlet 11. At least some of the debris is intercepted in the first area by the filter screen 6, and the water flows into the second area and out from the outlet 12.
[0043] When cleaning is required, the operator only needs to open the manhole cover, remove the intercepting frame 3 containing rainwater and impurities from the manhole body 1, pour the impurities in the intercepting frame 3 into the cleaning vehicle and transport it away, and finally put the intercepting frame 3, filter screen frame 6 and manhole cover back in place.
[0044] The in-well interception device can be installed during the initial construction of well body 1. Specifically,
[0045] S1. Embed the well body 1 into the excavated foundation trench, accurately calibrate the design elevation and building coordinates of the well body 1, conduct the concealed acceptance of the well body 1 according to relevant specifications, and after passing the acceptance, backfill and compact the foundation trench according to the drawing requirements.
[0046] S2. After the well body 1 is installed, assemble the intercepting frame 3 into the well body 1, ensuring that the insertion part 4 of the intercepting frame 3 and the limiting part 2 at the bottom of the well body 1 are fitted together, so as to ensure that the intercepting frame 3 will not rotate in the horizontal direction in the well body 1.
[0047] S3. Align the first connectors 65 at the ends of the vertical axis rod 63 of the filter screen frame 6 and the two horizontal rods of the fan-shaped end screen frame 61 with the reserved holes (adjustment holes and center insertion holes) of the dirt interception frame 3 and insert them to fix the filter screen frame 6 inside the dirt interception frame 3.
[0048] S4. Once the intercepting frame 3, filter screen frame 6, and well body 1 are installed, and the well cover is closed, the intercepting device inside the well can be put into use. In the future, cleaning personnel need to be arranged to clean the impurities inside the intercepting frame 3 regularly to reduce the risk of blockage of the drainage system caused by the accumulation of impurities in the intercepting frame 3.
[0049] The in-well interception device of the present invention is installed in conjunction with the well body 1, which serves as a carrier for interconnecting drainage pipes. It is particularly suitable for complex pipeline drainage systems, enabling effective interception of sewage under different well body structures, and facilitating regular maintenance and cleaning, thereby reducing the workload of cleaning personnel.
[0050] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A sewage interception device for a drainage system, installed in a well having an inlet and an outlet, characterized in that, include: A waste interception frame is detachably connected to the well body, and the waste interception frame has a fixed structure along the circumferential direction; A filter screen frame is detachably connected to the trap frame and divides the interior of the trap frame into a first area corresponding to the inlet and a second area corresponding to the outlet. The filter screen frame retains at least some debris in the first area. The filter screen frame is selectively connected to the trap frame through the fixing structure to adjust the position of the second area relative to the trap frame.
2. The in-well intercepting device for a drainage system according to claim 1, characterized in that, The fixing structure is a positioning frame connected to the dirt interception frame, and the filter screen frame can be selectively inserted into the positioning frame along the circumferential direction.
3. The in-well intercepting device for a drainage system according to claim 2, characterized in that, The positioning frame has multiple adjustment holes along its circumference, and the filter frame is provided with a first connector to be inserted into the corresponding adjustment hole.
4. The in-well intercepting device for a drainage system according to claim 3, characterized in that, The end of the intercepting frame has a central insertion hole, and the filter screen frame is provided with a second connector to be inserted into the central insertion hole.
5. The in-well intercepting device for a drainage system according to any one of claims 1-4, characterized in that, The intercepting frame is provided with a plug-in part, and the inside of the well body is provided with a limiting part. The plug-in part and the limiting part are engaged to lock together.
6. The in-well intercepting device for a drainage system according to any one of claims 1-4, characterized in that, The intercepting frame includes a first frame, a second frame, and a connecting rod. The first frame and the second frame are spaced apart and connected by the connecting rod. The interval between the first frame and the second frame corresponds to the inlet and the outlet. The first frame and / or the second frame have the fixing structure.
7. The in-well intercepting device for a drainage system according to claim 6, characterized in that, The first frame is annular, and the second frame includes annular side frames and end frames connected thereto. The annular side frames are connected to the connecting rod. The filter screen includes a fan-shaped end screen, two side screens, and a central rod. The two side screens are respectively connected to the corresponding radial sides of the fan-shaped end screen. The central rod is connected between the two side screens. The fan-shaped end screen is selectively inserted into the first frame through the fixing structure. The central rod is inserted into the center position of the end frame.
8. A method of using a sewage interception device for a drainage system, comprising the sewage interception device for a drainage system as described in any one of claims 1-7, characterized in that, The usage steps are as follows: According to the orientation of the water outlet, adjust the installation angle of the filter screen frame inside the intercepting frame and fix it with the fixing structure to install the intercepting frame into the well body; During drainage, water and debris enter the intercepting frame from the inlet, at least some of the debris is intercepted in the first area by the filter screen, and the water flows into the second area and out from the outlet. When cleaning is required, the dirt-catching frame and the filter screen frame should be removed for cleaning.