Garden drainage overflow backflow prevention equipment
By introducing a debris-blocking structure and anti-backflow components into the garden drainage overflow anti-backflow device, the problems of debris blockage and leakage are solved, achieving efficient drainage and anti-backflow functions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 巴彦淖尔经济技术开发区公用事业服务中心
- Filing Date
- 2025-07-07
- Publication Date
- 2026-05-22
AI Technical Summary
Existing garden drainage overflow anti-backflow devices are prone to blockage due to debris accumulation and have poor water-blocking effect. Furthermore, the design of non-fixed check joint positions poses a risk of leakage.
It adopts a debris-blocking structure and anti-backflow components, including buoyancy baffles, agitators, tension pipe heads, and moving pipe heads. The buoyancy baffles intercept debris, the agitators prevent sedimentation, and the coupling rod drives the pressure plate to form a double seal to prevent backflow.
It effectively prevents debris from clogging the system, ensures smooth drainage, and forms a double seal during backflow to prevent leakage, thus improving the device's backflow prevention effect.
Smart Images
Figure CN224266403U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of municipal landscaping technology, specifically, it relates to a landscaping drainage overflow prevention and backflow prevention device. Background Technology
[0002] Garden drainage overflow prevention equipment is a protective device designed specifically for garden and municipal drainage systems. Its core function is to prevent sewage or external water sources from flowing back into the garden, while also managing rainwater overflow.
[0003] The prior art discloses a drainage overflow anti-backflow device (CN207161789U), comprising: a main sleeve; a washer ring inserted into the top end of the main sleeve, the top end of which is flush with the top end of the main sleeve; a clamping device embedded in the washer ring, which has a central through hole; a check connector with an arc-shaped surface at its top end, which is inserted into the main sleeve and forms a waste liquid outflow channel with the main sleeve. When the waste liquid in the overflow pipe flows back, the check connector is lifted by the buoyancy of the waste liquid, and its arc-shaped surface seals the central through hole of the clamping device; an upper flat connector is threadedly connected to the main sleeve through an upper nut fitted on it; and a lower flat connector is threadedly connected to the main sleeve through a lower nut fitted on it.
[0004] Research revealed that municipal gardens often contain a lot of debris such as fallen leaves and branches. Existing technologies lack measures to handle debris and prevent dust accumulation, which can easily cause blockages inside the device and affect its drainage performance. Furthermore, the check valves used in existing technologies are subject to the impact of water flow to prevent backflow, and their position cannot be fixed, which limits their water-blocking effect and poses a certain risk of leakage.
[0005] In view of this, this utility model is proposed. Utility Model Content
[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:
[0007] A garden drainage overflow prevention and backflow prevention device, including
[0008] The mounting pipe has a mounting flange installed at each end.
[0009] A nuisance-blocking structure is movably disposed at one end inside the mounting tube. The nuisance-blocking structure includes a buoyancy baffle, a turbulence fan, and a support. The support is welded to the inner wall of the mounting tube, the buoyancy baffle is slidably disposed on one side of the support, and the turbulence fan is rotatably disposed on the support.
[0010] An anti-backflow assembly includes a tension tube head, a pressure plate, a coupling rod, a swing rod, and a movable tube head. The tension tube head is fixedly installed inside the other end of the installation tube. One end of the swing rod is hinged inside the tension tube head, and the other end of the swing rod is fixedly connected to the pressure plate. The movable tube head and the swing rod are hinged together by a coupling rod.
[0011] In a preferred embodiment of the present invention, a nail-shaped support shaft and two guide blocks are fixedly provided on one side of the support. The two guide blocks are symmetrically arranged on both sides of the support with the support shaft as the center. A buoyancy baffle is slidably connected between the two guide blocks. A stirring fan is rotatably connected to the support shaft.
[0012] In a preferred embodiment of the present invention, the agitator fan consists of multiple spiral blades and a bearing ring. The agitator fan is rotatably connected to the support shaft through the bearing ring. A protrusion is fixed on each side of the buoyancy baffle, and the protrusion slides in the guide block accordingly.
[0013] In a preferred embodiment of this utility model, the tension tube head is fixedly connected to the side of the bracket away from the agitator fan, and a fixed shaft is fixedly provided at the center of the tension tube head, and the movable tube head slides on the fixed shaft.
[0014] In a preferred embodiment of this utility model, a fixed seat is fixedly provided on the central curved surface of the fixed shaft, and a swing rod is hinged to each of the four sides of the fixed seat. An arc-shaped pressure plate is fixedly connected to the end of the swing rod away from the fixed seat, and the pressure plate is in contact with the inner wall surface of the tension tube head.
[0015] In a preferred embodiment of this utility model, a movable seat is fixedly provided at one end of the movable tube head near the tension tube head, and the movable seat slides on the fixed shaft accordingly. The tension tube head and the movable tube head have the same shape and structure, both being conical elastic structures.
[0016] In a preferred embodiment of this utility model, a coupling rod is hinged to each of the four corners of the movable seat, and the other end of the coupling rod away from the movable seat is hinged to the middle of the swing rod.
[0017] Compared with the prior art, the present invention has the following advantages:
[0018] 1. By setting up a debris-blocking structure, the buoyancy baffle slides along the guide block as the water level rises, blocking the fallen leaves suspended on the water surface. The flowing water pushes the agitator fan to rotate, and the spiral blades stir the water flow to form a vortex, which carries mud and other debris into the center of the vortex and discharges it with the water flow, thus preventing debris from settling and accumulating and clogging the pipes.
[0019] 2. By setting up an anti-backflow component, when there is a tendency for backflow from the external water source, the backflow pushes the moving pipe head to slide towards the tension pipe head. The coupling rod drives the swing rod to swing, so that the pressure plate tightly fits the inner wall of the tension pipe head. The tension pipe head and the moving pipe head are squeezed towards the middle simultaneously under the action of buoyancy, forming a double seal, which effectively prevents backflow. At the same time, the elastic material of the tension pipe head and the moving pipe head effectively prevents leakage.
[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description
[0021] In the attached diagram:
[0022] Figure 1 This is a schematic diagram of the overall appearance of the present utility model;
[0023] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;
[0024] Figure 3 This is a disassembly diagram of the obstacle-blocking structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the anti-backflow component of this utility model;
[0026] Figure 5 This is a schematic cross-sectional view of the present invention.
[0027] In the diagram: 10. Mounting pipe; 11. Mounting flange; 12. Guide block; 13. Buoyancy baffle; 14. Agitator fan; 15. Tension pipe head; 17. Bracket; 18. Support shaft; 19. Pressure plate; 20. Fixed seat; 21. Coupling rod; 22. Swing rod; 23. Moving seat; 24. Moving pipe head; 25. Fixed shaft. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.
[0029] A garden drainage overflow prevention and backflow prevention device, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, including
[0030] The mounting pipe 10 has a mounting flange 11 installed at each end.
[0031] The obstruction structure is movably disposed at one end inside the mounting tube 10. The obstruction structure includes a buoyancy baffle 13, a stirring fan 14, and a bracket 17. The bracket 17 is welded to the inner wall of the mounting tube 10. The buoyancy baffle 13 is slidably disposed on one side of the bracket 17, and the stirring fan 14 is rotatably disposed on the bracket 17.
[0032] The anti-backflow assembly includes a tension tube head 15, a pressure plate 19, a coupling rod 21, a swing rod 22, and a movable tube head 24. The tension tube head 15 is fixedly installed inside the other end of the installation tube 10. One end of the swing rod 22 is hinged inside the tension tube head 15, and the other end of the swing rod 22 is fixedly connected to the pressure plate 19. The movable tube head 24 and the swing rod 22 are hinged to the coupling rod 21.
[0033] Specifically, this garden drainage overflow and backflow prevention device connects to the garden drainage system via mounting flanges 11 at both ends of the mounting pipe 10. The mounting flanges 11 have standard bolt holes. During installation, the mounting flanges 11 of the device are bolted to the corresponding flanges of the drainage pipe to ensure a tight connection and prevent leakage. After installation, the device can be connected to the garden drainage system to perform drainage and backflow prevention functions. During normal rainfall drainage in the garden, rainwater flows into the mounting pipe 10 through the drainage pipe. When the water flow is low, the buoyancy baffle 13 is in a lower position. Larger debris is intercepted; as the water flow increases, the buoyancy baffle (13) slides upward under the action of the buoyancy of the water flow, providing a larger channel for the water flow. At the same time, the water flow impacts the agitator fan 14 to make it rotate, agitating the water flow to prevent dust from settling and ensuring smooth drainage. During the drainage process, the water flow pushes the moving pipe head 24 to move away from the tension pipe head 15. Through the coupling rod 21, the swing rod 22 is driven to make the pressure plate 19 move away from the inner wall of the tension pipe head 15. The impact force of the water flow squeezes the tension pipe head 15 and the moving pipe head 24 to deform, thereby making the drainage channel unobstructed.
[0034] like Figure 1 , Figure 2 and Figure 3 As shown, a nail-shaped support shaft 18 and two guide blocks 12 are fixed on one side of the support 17. The two guide blocks 12 are symmetrically arranged on both sides of the support 17 with the support shaft 18 as the center. A buoyancy baffle 13 is slidably connected between the two guide blocks 12. A stirring fan 14 is rotatably connected on the support shaft 18.
[0035] like Figure 2 and Figure 3 As shown, the agitator fan 14 consists of multiple spiral blades and a bearing ring. The agitator fan 14 is rotatably connected to the support shaft 18 via the bearing ring. A protrusion is fixed on each side of the buoyancy baffle 13, and the protrusion slides within the guide block 12 accordingly.
[0036] The working principle is as follows: the guide block 12 has a groove inside that matches the protrusion of the buoyancy baffle 13. The buoyancy baffle 13 is made of lightweight and water-resistant plastic material, with protrusions integrally formed on both sides. During installation, the protrusions on both sides of the buoyancy baffle 13 are slidably inserted into the groove of the guide block 12, allowing the buoyancy baffle 13 to slide up and down perpendicular to the water flow direction under the constraint of the guide block 12. When the garden drainage water flow is small, the buoyancy baffle 13 is in a lower position under its own weight, initially intercepting larger debris; when... As the water flow increases, the buoyancy baffle 13 slides upward under the buoyancy of the water flow, providing more space for the water flow to pass through. The spiral blades are fixedly connected to the bearing ring by welding. During installation, the bearing ring of the agitator fan 14 is sleeved on the support shaft 18. The rolling bearing in the bearing ring enables the agitator fan 14 to rotate flexibly on the support shaft 18. When the drainage water flows through, the water flow impacts the spiral blades of the agitator fan 14, causing the agitator fan 14 to rotate. The agitation generated by the rotation of the agitator fan 14 can prevent dust in the drainage from settling and at the same time disperse smaller debris, avoiding the accumulation of debris.
[0037] like Figure 2 , Figure 4 and Figure 5 As shown, the tension tube head 15 is fixedly connected to the side of the bracket 17 away from the agitator fan 14. A fixed shaft 25 is fixedly provided at the center of the tension tube head 15, and the movable tube head 24 slides on the fixed shaft 25.
[0038] like Figure 4 and Figure 5 As shown, a fixed seat 20 is fixedly provided on the central curved surface of the fixed shaft 25. A swing rod 22 is hinged to each of the four sides of the fixed seat 20. An arc-shaped pressure plate 19 is fixedly connected to the end of the swing rod 22 away from the fixed seat 20. The pressure plate 19 is in contact with the inner wall surface of the tension tube head 15.
[0039] like Figure 4 As shown, a movable seat 23 is fixedly provided at one end of the movable tube head 24 near the tension tube head 15. The movable seat 23 slides on the fixed shaft 25. The tension tube head 15 and the movable tube head 24 have the same shape and structure, both being conical elastic structures. Figure 4 As shown, a coupling rod 21 is hinged to each of the four corners of the movable seat 23, and the other end of the coupling rod 21 away from the movable seat 23 is hinged to the middle of the swing rod 22.
[0040] The working principle is as follows: the tension tube head 15 is fixedly connected to the side of the bracket 17 away from the agitator fan 14 by welding. Both the tension tube head 15 and the moving tube head 24 adopt a conical elastic structure and are made of elastic rubber. The center of the tension tube head 15 is connected to the fixed shaft 25. The fixed shaft 25 is welded to the side of the bracket 17 away from the agitator fan 14. The fixed shaft 25 is a rigid cylindrical steel structure. On the central curved surface of the fixed shaft 25, a fixed seat 20 is fixedly provided by welding. The fixed base 20 has a cross-shaped structure, with a swing rod 22 hinged to each of its four sides via hinge shafts. The swing rod 22 can swing around the hinge shaft within a certain angle range. The pressure plate 19 is also made of elastic rubber, and its arc-shaped surface can closely fit the inner wall of the tension tube head 15. The shape of the movable base 23 is adapted to the fixed shaft 25, and it can slide on the fixed shaft 25 accordingly. When the movable tube head 24 slides on the fixed shaft 25, it drives the swing rod 22 to swing through the coupling rod 21, thereby causing the pressure plate 19 to fit against or move away from the inner wall of the tension tube head 15. When external water sources, such as river water levels, rise and there is a tendency for backflow, the backflow pushes the movable pipe head 24 to slide on the fixed shaft 25 toward the tension pipe head 15. The coupling rod 21 drives the swing rod 22 to swing, so that the pressure plate 19 tightly fits against the inner wall of the tension pipe head 15, forming a seal and effectively preventing the backflow from entering the garden drainage system. When the external water level drops and the backflow pressure disappears, the movable pipe head 24 returns to its original position under the action of the water pressure inside the drainage system, and the pressure plate 19 moves away from the inner wall of the tension pipe head 15, and the garden drainage system resumes normal drainage function.
[0041] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A garden drainage overflow prevention and backflow prevention device, characterized in that, include The mounting pipe (10) has a mounting flange (11) installed at each end. The obstruction structure is movably disposed at one end inside the mounting tube (10). The obstruction structure includes a buoyancy baffle (13), a turbulence fan (14), and a bracket (17). The bracket (17) is welded to the inner wall of the mounting tube (10). The buoyancy baffle (13) is slidably disposed on one side of the bracket (17). The turbulence fan (14) is rotatably disposed on the bracket (17). The anti-backflow assembly includes a tension tube head (15), a pressure plate (19), a coupling rod (21), a swing rod (22), and a movable tube head (24). The tension tube head (15) is fixedly installed inside the other end of the installation tube (10). One end of the swing rod (22) is hinged inside the tension tube head (15), and the other end of the swing rod (22) is fixedly connected to the pressure plate (19). The movable tube head (24) and the swing rod (22) are hinged to the coupling rod (21).
2. The garden drainage overflow prevention and backflow prevention device according to claim 1, characterized in that, A nail-shaped support shaft (18) and two guide blocks (12) are fixed on one side of the support (17). The two guide blocks (12) are symmetrically arranged on both sides of the support (17) with the support shaft (18) as the center. A buoyancy baffle (13) is slidably connected between the two guide blocks (12). A turbulence fan (14) is rotatably connected on the support shaft (18).
3. A garden drainage overflow prevention and backflow prevention device according to claim 2, characterized in that, The agitator (14) consists of multiple spiral blades and a bearing ring. The agitator (14) is rotatably connected to the support shaft (18) through the bearing ring. A protrusion is fixed on each side of the buoyancy baffle (13), and the protrusion slides in the guide block (12).
4. A garden drainage overflow prevention and backflow prevention device according to claim 1, characterized in that, The support (17) is fixedly connected to the tension tube head (15) on the side away from the agitator (14). The tension tube head (15) is fixedly provided with a fixed shaft (25) at its center. The movable tube head (24) slides on the fixed shaft (25).
5. A garden drainage overflow prevention device according to claim 4, characterized in that, A fixed seat (20) is fixedly provided on the central curved surface of the fixed shaft (25). A swing rod (22) is hinged to each of the four sides of the fixed seat (20). An arc-shaped pressure plate (19) is fixedly connected to the end of the swing rod (22) away from the fixed seat (20). The pressure plate (19) is in contact with the inner wall of the tension tube head (15).
6. A garden drainage overflow prevention device according to claim 5, characterized in that, The movable tube head (24) is fixedly provided with a movable seat (23) at one end near the tension tube head (15). The movable seat (23) slides on the fixed shaft (25). The tension tube head (15) and the movable tube head (24) have the same shape and structure, both being conical elastic structures.
7. A garden drainage overflow prevention device according to claim 6, characterized in that, Each of the four corners of the movable seat (23) is hinged with a coupling rod (21), and the other end of the coupling rod (21) away from the movable seat (23) is hinged to the middle of the swing rod (22).