A rainwater pipeline sundry intercept net quick replacement device
The design of the pull-out interception mechanism and locking mechanism simplifies the disassembly and assembly process of the rainwater pipe debris interception net, solves the problems of cumbersome fixing and easy corrosion of the interception net in the existing technology, improves maintenance efficiency and device durability, and reduces the risk caused by rainstorms.
Patent Information
- Application Number
- CN202522698342.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-19
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-19
AI Technical Summary
The existing method of fixing debris interception nets in rainwater pipes is cumbersome, disassembly is time-consuming and prone to rust and jamming, resulting in low maintenance efficiency and high cost, and is prone to blockage and flooding during heavy rain.
It adopts a pull-out interception and locking mechanism. Through the combination of horizontal plate, short rod, mounting box, straight rod, limit plate, return spring and stop bar, the disassembly and assembly process is simplified. Combined with the design of sealing gasket and through groove, it ensures sealing and protection.
It improves disassembly and assembly efficiency, avoids thread stripping and corrosion problems, reduces labor costs, ensures rapid response and long-term reliability in confined and humid environments, and prevents pipe blockage and waterlogging risks.
Smart Images

Figure CN224931159U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to rainwater pipe treatment technology, specifically to a quick replacement device for a rainwater pipe debris interception net. Background Technology
[0002] Rainwater pipe debris interception nets are filtering devices installed at rainwater inlets, inspection wells, or pipe entrances. They are mainly used to intercept solid debris such as leaves, plastic bags, and silt that flow in with rainwater, preventing them from entering downstream pipes and causing blockages, siltation, or poor drainage. These interception nets are usually made of corrosion-resistant metals or high-strength engineering plastics, and have good permeability and structural strength. While ensuring smooth rainwater discharge, they effectively reduce the burden of pipe network maintenance.
[0003] Existing interception nets are typically fixed to pipe ports or supports using multiple bolts, nuts, or welding. While this method provides some stability during initial installation, later maintenance becomes problematic. When large amounts of debris such as leaves, plastic bags, and mud accumulate on the nets and need cleaning or replacement, operators must unscrew multiple bolts one by one. This process is not only tedious and time-consuming but also extremely inconvenient in confined or damp environments. Furthermore, repeated disassembly and reassembly can easily cause problems such as stripped threads, corrosion, and jamming, further increasing the difficulty of disassembly and even damaging the nets or pipes themselves. These issues directly lead to reduced maintenance efficiency, increased labor costs, and an inability to meet the requirements of modern urban drainage systems for rapid response, efficient operation and maintenance, and high reliability. More seriously, in extreme weather conditions such as heavy rain, if the failure to clean or replace the nets in a timely manner leads to pipe blockage, it may cause localized water accumulation, backflow, or even flooding, posing a potential threat to public safety and infrastructure.
[0004] To address this issue, the applicant proposes a quick-replacement device for rainwater pipe debris interception nets. Utility Model Content
[0005] The purpose of this utility model is to provide a quick replacement device for rainwater pipe debris interception nets, in order to solve the problems that existing interception nets are mostly fixed by bolts or welding. When disassembling, each bolt needs to be loosened one by one. This is cumbersome and time-consuming in narrow and humid environments, and they are prone to rust and jamming, resulting in low maintenance efficiency, high cost, and difficulty in timely cleaning. During heavy rain, they are prone to blockage, water accumulation, and even the risk of waterlogging.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A quick-replacement device for a rainwater pipe debris interception net includes an interception end, both ends of which are fixedly connected to a pipe body. A through groove is opened on one side of the top of the interception end, and an interception mechanism is provided in the inner cavity of the through groove. The interception mechanism includes an outer frame, and the inner cavity of the outer frame is provided with an interception net body. A sealing gasket is fixedly connected to the top of the outer frame, and a top plate is fixedly connected to the top of the sealing gasket. The outer ring of the outer frame is slidably connected to the inner cavity of the through groove. Both sides of one outer wall of the top plate are fixedly connected to a locking block. A debris collection pipe is fixedly connected and communicated to one side of the interception end, and an insertion hole is opened on one side of the locking block.
[0008] The top two sides of the interceptor end are provided with mounting slots. The inner cavity of the mounting slot is provided with a locking mechanism. The locking mechanism includes a short rod, and the outer ring of the short rod is fitted with a horizontal plate. One end of the short rod is rotatably connected to the inner wall of the adjacent mounting slot through a rotating shaft. A mounting box is fixedly connected to one side of the horizontal plate. A straight rod is vertically arranged in the inner cavity of the mounting box. One end of the straight rod passes through the side wall of the adjacent horizontal plate and is inserted into the inner cavity of the corresponding insertion hole. A limiting piece is fitted on the outer ring of the straight rod. One side of the limiting piece is in contact with one side of the adjacent horizontal plate.
[0009] Furthermore, one side of the card block is in contact with the inner wall of the adjacent mounting groove, and one side of the horizontal plate is in contact with one side of the adjacent card block.
[0010] Furthermore, a number of stop bars are fixedly connected to one side of the horizontal plate and along the horizontal direction of the horizontal plate, and one side of the stop bar abuts against one side of the adjacent horizontal plate.
[0011] Furthermore, the inner cavity of the outer frame is connected to the inner cavity of the interception end, the outer wall of the interception net body is fixedly connected to the inner wall of the adjacent through groove, and the outer wall of the sealing gasket is respectively attached to the inner wall of the adjacent through groove.
[0012] Furthermore, the other end of the straight rod is fixedly connected to a handle through the side wall of the adjacent mounting box, and a return spring is sleeved on the outer ring of the straight rod. A protective shell is fixedly connected to one side of the intercepting end. Both mounting boxes are located in the inner cavity of the protective shell. Cover plates are rotatably connected to both sides of the upper surface of the protective shell through spring hinges.
[0013] Furthermore, one end of the reset spring is fixedly connected to one side of the adjacent limiting piece, and the other end of the reset spring is fixedly connected to the inner wall of the adjacent mounting box.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This solution utilizes a pull-out interception mechanism in conjunction with a locking mechanism consisting of a horizontal plate, short rod, mounting box, straight rod, limit plate, return spring, and stop bar. This replaces traditional bolt or welding fixing methods, requiring only three actions: pulling the handle, rotating the horizontal plate, and lifting the top plate. This significantly improves disassembly and assembly efficiency, making it particularly suitable for confined and humid environments such as manholes. It avoids problems like thread stripping, rust, and jamming caused by repeated disassembly and assembly, extending equipment lifespan. The sealing gasket fits snugly with the through-slot to ensure airtightness and prevent rainwater bypass. The waste collection pipe allows personnel to pre-emptively remove impurities from one side of the interception net. The protective shell and cover provide dust and moisture protection for the locking mechanism, enhancing outdoor durability. The overall structure effectively improves maintenance efficiency, reduces labor costs, and ensures rapid response in emergencies such as heavy rain, preventing water accumulation, backflow, or flooding risks caused by pipe blockage.
[0016] Through the coordinated arrangement of the protective shell, cover plate, and mounting groove, the protective shell is fixed to one side of the interception end, enclosing the locking mechanism entirely within its cavity, effectively isolating external rainwater, mud, sand, and debris from intrusion. The cover plate is rotatably connected to both sides of the upper surface of the protective shell via spring hinges, facilitating opening and closing operations, ensuring the maintainability of the internal structure, and providing sealing protection when closed. The mounting groove is located on both sides of the top of the interception end, providing precise guidance and stable installation space for the horizontal plate and locking components, ensuring reliable cooperation between the locking block and the locking mechanism. The combined effect of these three components not only enhances the durability and rust prevention of the device in outdoor humid and dusty environments, but also prevents the locking mechanism from jamming or failing due to dirt or corrosion, thereby ensuring smooth and reliable disassembly and assembly of the interception mechanism, extending its overall service life, and reducing the difficulty of later maintenance. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;
[0019] Figure 2 A schematic diagram of the impurity collection pipe structure provided in an embodiment of this utility model;
[0020] Figure 3 A schematic diagram of the mounting groove structure provided in an embodiment of this utility model;
[0021] Figure 4 This is a schematic diagram of the outer frame structure provided for an embodiment of the present utility model;
[0022] Figure 5 A cross-sectional view of the mounting box provided in an embodiment of this utility model;
[0023] Figure 6 A schematic diagram of the top plate structure provided for an embodiment of this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] 1. Interception end; 2. Protective shell; 3. Cover plate; 4. Pipe body; 5. Waste collection pipe; 6. Interception mechanism; 601. Outer frame; 602. Interception net body; 603. Sealing gasket; 604. Top plate; 605. Locking block; 606. Insertion hole; 7. Through groove; 8. Locking mechanism; 801. Horizontal plate; 802. Short rod; 803. Mounting box; 804. Straight rod; 805. Limiting plate; 806. Return spring; 807. Stop bar; 9. Mounting groove. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0027] As attached Figure 1 To be continued Figure 6 As shown:
[0028] Example 1:
[0029] This utility model provides a quick replacement device for a rainwater pipe debris interception net, including an interception end 1, with pipe bodies 4 fixedly connected to both ends of the interception end 1. A through groove 7 is provided on one side of the top of the interception end 1, and an interception mechanism 6 is provided in the inner cavity of the through groove 7. The interception mechanism 6 includes an outer frame 601, and an interception net body 602 is provided in the inner cavity of the outer frame 601. A sealing gasket 603 is fixedly connected to the top of the outer frame 601, and a top plate 604 is fixedly connected to the top of the sealing gasket 603. The outer ring of the outer frame 601 is slidably connected to the inner cavity of the through groove 7. A locking block 605 is fixedly connected to both sides of one side of the outer wall of the top plate 604. A debris collection pipe 5 is fixedly connected and communicated to one side of the interception end 1, and an insertion hole 606 is provided on one side of the locking block 605.
[0030] The top two sides of the interceptor end 1 are provided with mounting grooves 9. The inner cavity of the mounting groove 9 is provided with a locking mechanism 8. The locking mechanism 8 includes a short rod 802, and the outer ring of the short rod 802 is sleeved with a horizontal plate 801. One end of the short rod 802 is rotatably connected to the inner wall of the adjacent mounting groove 9 through a rotating shaft. One side of the horizontal plate 801 is fixedly connected with a mounting box 803. The inner cavity of the mounting box 803 is vertically provided with a straight rod 804. One end of the straight rod 804 passes through the side wall of the adjacent horizontal plate 801 and is inserted into the inner cavity of the corresponding insertion hole 606. The outer ring of the straight rod 804 is sleeved with a limiting piece 805. One side of the limiting piece 805 is in contact with one side of the adjacent horizontal plate 801.
[0031] One side of the card block 605 is in contact with the inner wall of the adjacent mounting groove 9, and one side of the horizontal plate 801 is in contact with one side of the adjacent card block 605.
[0032] Working Principle: In actual use, rainwater first enters the inner cavity of the interception end 1 through one of the pipe bodies 4. Solid debris such as leaves, plastic bags, and mud carried by the water flow is effectively intercepted by the interception net body 602 when it flows through the interception mechanism 6. The filtered clean rainwater continues to flow through the interception end 1 into the pipe body 4 on the other side and is discharged outward. After the drainage is completed, the debris collection pipe 5 can help personnel to remove the impurities on one side of the interception net body 602 in advance. When it is necessary to clean or replace the interception net body 602, the operator first flips the cover plate 3 upward to expose the inner cavity of the protective shell 2, and then holds the handle and pulls the straight rod 804 upward to move it axially within the mounting box 803, overcoming the elastic force of the return spring 806, until the straight rod 804 is completely disengaged from the insertion hole 606 on the locking block 605. At this time, the locking mechanism 8 locks the locking block 605. The limiting effect of 5 is released; then, the operator rotates the entire horizontal plate 801 together with the mounting box 803 around the pivot of the short rod 802, so that the horizontal plate 801 is removed from the position where it is attached to the locking block 605, thereby releasing the lateral constraint on the top plate 604; then, simply lift the top plate 604 upwards to pull the outer frame 601, the sealing gasket 603 and the interception net body 602 out of the through groove 7 as a whole, completing the quick disassembly of the interception mechanism 6; when reinstalling, simply align the outer frame 601 with the through groove 7 and insert it, ensuring that the sealing gasket 603 is tightly attached to the inner wall of the through groove 7 to achieve a seal, then rotate the horizontal plate 801 back to its original position so that one side is attached to the locking block 605, and after releasing the handle, under the elastic force of the return spring 806, the straight rod 804 automatically resets and re-inserts into the insertion hole 606, achieving reliable locking of the locking block 605, and finally covering the cover plate 3 to restore the normal operation of the device;
[0033] This solution, through the inclusion of a pull-out interception mechanism 6 and a locking mechanism 8 consisting of a horizontal plate 801, a short rod 802, a mounting box 803, a straight rod 804, a limiting plate 805, a return spring 806, and a stop bar 807, completely eliminates the cumbersome traditional method of fixing with multiple bolts or welding. This simplifies the installation and removal process of the interception net, requiring only three simple actions: pulling the handle, rotating the horizontal plate 801, and lifting the top plate 604. This significantly reduces maintenance time and is particularly suitable for confined spaces and humid environments such as well chambers. Furthermore, because it eliminates the need for repeated tightening or loosening of bolts, it effectively... This design avoids disassembly difficulties or structural damage caused by thread stripping or rust jamming, extending the overall service life of the device. The fitting design of the sealing gasket 603 and the inner wall of the through groove 7 ensures the sealing of the interception mechanism 6 after installation, preventing unfiltered rainwater from bypassing. The combination of the protective shell 2 and the cover plate 3 provides dustproof, moisture-proof, and protective functions for the locking mechanism 8, improving the reliability of long-term outdoor use. The overall structure not only improves operation and maintenance efficiency and reduces labor costs, but also enables rapid replacement and cleaning of the interception net in emergency situations such as heavy rain, effectively preventing the risk of water accumulation, backflow, or even flooding caused by blockage.
[0034] Example 2:
[0035] This embodiment is basically the same as the previous embodiment, except that a number of stop bars 807 are fixedly connected to one side of the horizontal plate 801 and along the horizontal direction of the horizontal plate 801, and one side of the stop bar 807 abuts against one side of the adjacent horizontal plate 801.
[0036] The inner cavity of the outer frame 601 is connected to the inner cavity of the interception end 1. The outer wall of the interception net body 602 is fixedly connected to the inner wall of the adjacent through groove 7. The outer wall of the sealing gasket 603 is attached to the inner wall of the adjacent through groove 7.
[0037] The other end of the straight rod 804 is fixedly connected to a handle through the side wall of the adjacent mounting box 803, and a return spring 806 is sleeved on the outer ring of the straight rod 804. A protective shell 2 is fixedly connected to one side of the intercepting end 1. Both mounting boxes 803 are located in the inner cavity of the protective shell 2. The upper surface of the protective shell 2 is rotatably connected to the cover plate 3 on both sides through spring hinges.
[0038] One end of the reset spring 806 is fixedly connected to one side of the adjacent limiting piece 805, and the other end of the reset spring 806 is fixedly connected to the inner wall of the adjacent mounting box 803.
[0039] Working principle: By having one side of the locking block 605 abut against the inner wall of the adjacent mounting groove 9, and one side of the horizontal plate 801 abut against one side of the adjacent locking block 605, after the interception mechanism 6 is installed, the locking block 605 is stably confined within the mounting groove 9. Simultaneously, the horizontal plate 801, tightly abutting against the locking block 605, provides lateral constraint, preventing loosening or displacement under water flow impact or vibration. This achieves the effect of improving the installation stability and operational reliability of the interception mechanism 6. Furthermore, several baffles 807 are fixedly connected horizontally along one side of the horizontal plate 801, with one side of each baffle abutting against one side of the adjacent horizontal plate 801. When the horizontal plate 801 rotates to the locked position, the stop bar 807 forms a physical stop with the adjacent structure, limiting excessive rotation or accidental rebound of the horizontal plate 801, ensuring the continuous effectiveness of the locked state, and achieving the effect of enhancing the working stability of the locking mechanism 8 and preventing accidental locking. Through the connection between the inner cavity of the outer frame 601 and the inner cavity of the interception end 1, the fixed connection between the outer wall of the interception net body 602 and the inner wall of the through groove 7, and the fit between the outer wall of the sealing gasket 603 and the inner wall of the through groove 7, rainwater can flow smoothly through the interception net body 602 for filtration. At the same time, the sealing gasket 603 tightly fits against the inner wall of the through groove 7 to form an effective sealing interface, preventing... Unfiltered rainwater bypasses through the gaps, achieving the dual effect of ensuring filtration efficiency and system sealing. A handle is fixedly connected to the other end of the straight rod 804, which passes through the side wall of the mounting box 803. A return spring 806 is fitted around the outer ring of the straight rod 804. A protective shell 2 is fixedly connected to one side of the intercepting end 1. Both mounting boxes 803 are located inside the protective shell 2. The upper surface of the protective shell 2 is connected to the cover plate 3 via spring hinges on both sides. When unlocking is required, the operator can directly pull the handle to disengage the straight rod 804 from the insertion hole 606. After releasing the handle, the return spring 806 automatically pushes the straight rod 804 back to its original position, achieving quick locking. The protective shell 2 and the cover plate... The internal locking mechanism 8 forms a closed protection, achieving convenient operation, automatic reset, and dust and moisture protection. By fixing one end of the return spring 806 to one side of the limiting plate 805 and the other end to the inner wall of the mounting box 803, the return spring 806 is always in a compressed and stored state after the straight rod 804 is pulled out of the insertion hole 606. Once the handle is released, the spring force can push the limiting plate 805 to drive the straight rod 804 to quickly return to its original position and re-insert into the insertion hole 606, realizing the automation and reliability of the locking action, and achieving the effects of simplifying the operation steps, improving the locking response speed, and improving long-term use stability.
[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A quick-replacement device for a rainwater pipe debris interception net, comprising an interception end (1), characterized in that, Both ends of the intercepting end (1) are fixedly connected to the pipe body (4). A through groove (7) is opened on one side of the top of the intercepting end (1). An intercepting mechanism (6) is provided in the inner cavity of the through groove (7). The intercepting mechanism (6) includes an outer frame (601). An intercepting net body (602) is provided in the inner cavity of the outer frame (601). A sealing gasket (603) is fixedly connected to the top of the outer frame (601). A top plate (604) is fixedly connected to the top of the sealing gasket (603). The outer ring of the outer frame (601) is slidably connected to the inner cavity of the through groove (7). A locking block (605) is fixedly connected to both sides of the outer wall of one side of the top plate (604). A waste collection pipe (5) is fixedly connected to one side of the intercepting end (1). An insertion hole (606) is opened on one side of the locking block (605). The top two sides of the interceptor end (1) are provided with mounting grooves (9). The inner cavity of the mounting groove (9) is provided with a locking mechanism (8). The locking mechanism (8) includes a short rod (802). The outer ring of the short rod (802) is fitted with a horizontal plate (801). One end of the short rod (802) is rotatably connected to the inner wall of the adjacent mounting groove (9) through a rotating shaft. One side of the horizontal plate (801) is fixedly connected with a mounting box (803). The inner cavity of the mounting box (803) is vertically provided with a straight rod (804). One end of the straight rod (804) passes through the side wall of the adjacent horizontal plate (801) and is inserted into the inner cavity of the corresponding insertion hole (606). The outer ring of the straight rod (804) is fitted with a limiting piece (805). One side of the limiting piece (805) is in contact with one side of the adjacent horizontal plate (801).
2. The quick replacement device for rainwater pipe debris interception net according to claim 1, characterized in that, One side of the card block (605) is in contact with the inner wall of the adjacent mounting groove (9), and one side of the horizontal plate (801) is in contact with one side of the adjacent card block (605).
3. The quick replacement device for rainwater pipe debris interception net according to claim 1, characterized in that, A plurality of stop bars (807) are fixedly connected to one side of the horizontal plate (801) and along the horizontal direction of the horizontal plate (801), and one side of the stop bar (807) abuts against one side of the adjacent horizontal plate (801).
4. A quick-replacement device for rainwater pipe debris interception net according to claim 1, characterized in that, The inner cavity of the outer frame (601) is connected to the inner cavity of the interception end (1), the outer wall of the interception net body (602) is fixedly connected to the inner wall of the adjacent through groove (7), and the outer wall of the sealing gasket (603) is in contact with the inner wall of the adjacent through groove (7).
5. A quick-replacement device for rainwater pipe debris interception net according to claim 1, characterized in that, The other end of the straight rod (804) is fixedly connected to a handle through the side wall of the adjacent mounting box (803), and a return spring (806) is sleeved on the outer ring of the straight rod (804). A protective shell (2) is fixedly connected to one side of the intercepting end (1). Both mounting boxes (803) are located in the inner cavity of the protective shell (2). The upper surface of the protective shell (2) is rotatably connected to the cover plate (3) on both sides by spring hinges.
6. A quick-replacement device for rainwater pipe debris interception net according to claim 5, characterized in that, One end of the reset spring (806) is fixedly connected to one side of the adjacent limiting piece (805), and the other end of the reset spring (806) is fixedly connected to the inner wall of the adjacent mounting box (803).
