A self-adjusting device for preventing backflow of a road rainwater collection pipeline and a method of using the same

Abstract

The application discloses a kind of road rainwater collection pipeline anti-backflow self-regulating device and its use method.The regulating device includes collection pipe, the connecting cylinder of sleeve setting in the collection pipe outlet sleeve and the flexible plugging bag being arranged in the collection pipe inside, the diameter of the flexible plugging bag gradually becomes smaller from opening end towards closed end, and the upper part of opening end of flexible plugging bag is fixed in the outer port of connecting cylinder by connecting assembly;Power mechanism is arranged on the upper end of connecting cylinder, and a plurality of fixed assemblies are arranged in the inside of connecting cylinder.The flexible plugging bag of the application is convenient to disassemble and assemble, and can be closely connected with pipe opening, and the anti-backflow effect is good;Flexible plugging bag can be extruded and deformed according to the size of water flow, so as to meet the demand of different water flow;And the flexible plugging bag in the shape of cone can also reduce the impact of water flow on flexible plugging bag when water flow passes, so as to improve the service life of the device.

Description

Technical Field

[0001] This invention relates to the field of municipal drainage engineering technology, and in particular to a self-regulating device for preventing backflow in road rainwater collection pipelines and its usage method. Background Technology

[0002] In municipal road drainage systems, rainwater harvesting pipes are a crucial component. Their primary function is to rapidly collect rainwater from the road surface and channel it into the municipal drainage network, preventing road flooding and traffic disruptions. However, under extreme weather conditions such as heavy rain and typhoons, the water level within the municipal drainage network can rise sharply, increasing pressure and potentially causing rainwater to backflow into the rainwater harvesting pipes. Furthermore, if rivers, lakes, or other bodies of water exist near the road and their water levels exceed those in the rainwater harvesting pipes, backflow can also occur. Currently, rainwater harvesting pipes typically use one-way valves to prevent backflow. However, existing one-way valves generally lack flow regulation capabilities, and the water flow during drainage can impact the valves, causing damage and affecting their lifespan.

[0003] Utility model patent CN 217679611 U discloses a flexible anti-backflow device, including a sealing component, a cylinder, and a membrane. The outer ring of the cylinder is fitted to the inner wall of the drainage pipe through the sealing component. The membrane includes a gradually expanding section and a reinforcing section arranged along the water outlet direction. The outer ring of the reinforcing section is fitted to the inner wall of the cylinder. The reinforcing section includes a fixed part and a movable part, with the movable part located above the fixed part. The fixed part is installed at the bottom of the cylinder, and the movable part cooperates with the inner cavity of the cylinder. This patent adopts a weir overflow process design, which has the functions of forward drainage, reverse water stoppage, odor control, and silt flushing, and also has an anti-backflow function. However, the membrane of this flexible anti-backflow device is fixed to the cylinder by a pressure plate and bolts, which is relatively troublesome to disassemble and assemble. Moreover, only half of the membrane is fixed to the cylinder, resulting in poor stability. It is easily damaged when encountering large water flow. In addition, the gap between the membrane and the cylinder opening is large, and this location is prone to debris accumulation. In addition, since the drainage pipe is often used to discharge sewage, which contains a lot of garbage, the sewage will accumulate at the opening of the cylinder during the discharge process. If a lot of sewage accumulates, the membrane will not be able to return to its original position to achieve the purpose of preventing flooding. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a self-regulating device for preventing backflow in road rainwater collection pipes and its usage method. The device is easy to install, can automatically adjust the flow rate of the collection pipe, and can seal the collection pipe opening when rainwater backflows, thus achieving the backflow prevention function.

[0005] To achieve the above objectives, the present invention provides a self-adjusting device for preventing backflow in road rainwater collection pipes, comprising a collection pipe. The adjusting device includes a connecting cylinder sleeved at the outlet end of the collection pipe and a flexible sealing bladder located inside the collection pipe. The diameter of the flexible sealing bladder gradually decreases from the open end to the closed end, and the upper part of the open end of the flexible sealing bladder is fixed to the outer port of the connecting cylinder by a connecting component. A power mechanism is provided at the upper end of the connecting cylinder, and multiple sets of fixing components are provided inside the connecting cylinder. The multiple sets of fixing components are arranged in a ring along the outer edge of the connecting cylinder. The power mechanism is used to provide power to the multiple sets of fixing components simultaneously and to fix the connecting cylinder to the collection pipe through the fixing components.

[0006] The power mechanism includes a mounting frame, a drive assembly, a first rotating ring, an annular bevel gear, and multiple transmission bevel gears. The number of transmission bevel gears matches the number of fixed assemblies, and each transmission bevel gear is fixedly mounted on the power input end of the corresponding fixed assembly. The mounting frame is fixedly mounted on the upper end of the connecting cylinder. The first rotating ring is rotatably mounted on the circumferential surface of the connecting cylinder. The annular bevel gear is fixedly mounted on the side of the first rotating ring, and the annular bevel gear meshes with multiple transmission bevel gears respectively. The drive assembly is mounted on the mounting frame and is used to provide power to the first rotating ring, control the rotation of the first rotating ring, and simultaneously drive the multiple transmission bevel gears to rotate, and transmit power to multiple sets of fixed assemblies simultaneously.

[0007] A preferred technical solution of the present invention is as follows: a guide frame is fixedly connected inside the collection tube, the guide frame is fixed on the lower part of the inner wall of the collection tube, a movable seat is slidably connected to the guide frame, a transmission rod is rotatably connected to the upper end of the movable seat, and the end of the transmission rod away from the movable seat is rotatably connected to the flexible sealing bag; a connecting rod is fixedly connected to the lower end of the movable seat, and a cleaning plate is fixedly connected to the end of the connecting rod away from the movable seat, the cleaning plate being an arc-shaped plate.

[0008] The preferred technical solution of the present invention is as follows: the flexible sealing bladder is made of rubber material and is in the shape of an eccentric cone. The tip of the flexible sealing bladder is located inside the collection tube, and the opening end of the flexible sealing bladder is located at the water outlet end of the collection tube.

[0009] A preferred technical solution of the present invention: The fixing component includes a threaded rod, a limiting cylinder, and a pressing rod. The limiting cylinder is fixedly connected inside the connecting cylinder, and the pressing rod is slidably connected inside the limiting cylinder. The pressing rod passes through the inner arc end of the connecting cylinder, and a threaded rod is threadedly connected inside the pressing rod. The end of the threaded rod away from the pressing rod passes through the outer arc end of the connecting cylinder and is rotatably connected to the connecting cylinder. The threaded rod is fixedly connected to the transmission bevel gear. The end of the pressing rod near the collecting pipe is arc-shaped, and a threaded groove is formed at the end of the pressing rod near the threaded rod, and the threaded groove cooperates with the threaded rod.

[0010] A preferred technical solution of the present invention is as follows: the drive assembly includes a rotating shaft, a worm gear, and an annular worm wheel. The rotating shaft is rotatably connected inside the mounting frame, and a handle is fixedly connected to the end of the rotating shaft. The worm gear is fixedly connected to the circumferential surface of the rotating shaft, and the annular worm wheel is fixed to the circumferential surface of the first rotating ring, and the annular worm wheel meshes with the worm gear.

[0011] A preferred technical solution of the present invention is as follows: an adjustment component is provided at the front end of the connecting cylinder, the adjustment component includes a rotating disk, a second rotating ring and a locking screw, the second rotating ring is rotatably installed inside the front end of the connecting cylinder, the cross-section of the second rotating ring is T-shaped, and the front end of the second rotating ring is fixedly connected to the rotating disk; a locking screw is threadedly connected to the upper side of the front end of the connecting cylinder, and the locking screw is used to lock the second rotating ring.

[0012] A preferred technical solution of the present invention is as follows: the connecting component includes an arc-shaped connecting plate and bolts, the arc-shaped connecting plate is fixed at the opening of the flexible sealing bladder, and the arc-shaped connecting plate is connected to the rotating disk of the adjusting component by bolts.

[0013] A preferred technical solution of the present invention is as follows: a positioning component is provided at the front end of the rotating disk. The positioning component includes a fixed shaft, a pointer, and a positioning groove. The positioning groove is located on the midline of the arc-shaped connecting plate, the fixed shaft is located above the positioning groove, and the pointer is rotatably mounted on the fixed shaft. The arc-shaped connecting plate is positioned in the same direction as the tip of the flexible occlusion bladder. After the flexible occlusion bladder is installed into the collection tube, when the pointer is vertically downward in the positioning groove, the tip of the flexible occlusion bladder is located at the top of the inner wall of the collection tube.

[0014] To achieve the above-mentioned technical objectives, the present invention also provides a method for using the aforementioned self-regulating device for preventing backflow in road rainwater collection pipes, specifically including the following steps:

[0015] S1. Place the connecting sleeve on the collection tube, so that the tip of the flexible occlusion bladder is attached to the top of the inside of the collection tube, and the lower part of the large end of the flexible occlusion bladder is attached to the bottom of the collection tube.

[0016] S2. After adjusting the position of the flexible occlusion bladder, the power mechanism simultaneously provides power to multiple sets of fixing components, and with the cooperation of multiple sets of fixing components, the flexible occlusion bladder is installed on the collection tube;

[0017] S3. When rainwater flows back into the pipe, the rainwater enters the flexible sealing bladder, causing the flexible sealing bladder to expand automatically and adhere to the inner wall of the collection pipe, thus achieving the function of preventing backflow.

[0018] A further technical solution of the present invention: The collection pipe is fixedly connected with a guide frame, a movable seat, a transmission rod, a connecting rod, and a cleaning plate, wherein the cleaning plate is an arc-shaped plate; when rainwater backflow occurs in step S3, the expansion of the flexible sealing bladder, in cooperation with the transmission rod, drives the movable seat to slide on the guide frame, and then, in cooperation with the connecting rod, drives the cleaning plate to move into the collection pipe, thereby cleaning the outlet of the collection pipe and making the flexible sealing bladder tightly contact the inner wall of the collection pipe.

[0019] The present invention has the following beneficial effects:

[0020] (1) The present invention sets up a flexible sealing bladder. Since the flexible sealing bladder is made of rubber material and has an eccentric cone shape, when water flows through the flexible sealing bladder, the flexible sealing bladder can be squeezed and deformed according to the size of the water flow. When the water flow is large, the squeezing deformation of the flexible sealing bladder is larger, and vice versa. In this way, the flexible sealing bladder can change its squeezing deformation according to the water flow rate, thereby meeting the needs of different water flow rates. In addition, the cone-shaped flexible sealing bladder can also reduce the impact of the water flow on the flexible sealing bladder when water flows through it, thereby improving the service life of the device.

[0021] (2) The present invention has a cleaning mechanism on the rear side of the flexible sealing bladder. When rainwater flows back, the rainwater enters the interior of the flexible sealing bladder, causing the flexible sealing bladder to expand automatically and adhere to the inner wall of the collection pipe to achieve the function of preventing backflow. At the same time, the expansion of the flexible sealing bladder, with the cooperation of the transmission rod, drives the moving seat to slide on the guide frame, and then with the cooperation of the connecting rod, drives the cleaning plate to move into the collection pipe, which can clean the dirt at the outlet of the collection pipe, and avoid the accumulation of dirt, so that the flexible sealing bladder cannot make close contact with the outlet of the collection pipe, thus failing to achieve the purpose of preventing backflow.

[0022] (3) The present invention is provided with a mounting frame, a rotating shaft, a worm gear, a handle, an annular worm wheel, a first rotating ring, an annular bevel gear, a transmission bevel gear, a threaded rod, a limiting cylinder, and a squeezing rod. When in use, the connecting cylinder is fitted onto the outlet end of the collecting pipe, and then the handle is rotated. At this time, with the cooperation of the rotating shaft, the worm gear can be driven to rotate, which in turn drives the annular worm wheel to rotate. As the annular worm wheel rotates, the first rotating ring is also driven to rotate. Then, with the cooperation of the annular bevel gear and multiple transmission bevel gears, multiple threaded rods can be driven to rotate. At this time, with the cooperation of the threaded rods, multiple squeezing rods can be driven to slide inside the limiting cylinder, and at the same time, multiple squeezing rods move closer to the collecting pipe. In this way, the connecting cylinder can be fixed on the collecting pipe, thereby facilitating the installation of the flexible sealing bag inside the collecting pipe. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention from a first-view perspective;

[0024] Figure 2 This is a schematic diagram of the overall structure of the invention from a second perspective;

[0025] Figure 3 For the present invention Figure 2 Enlarged view of section A in the middle;

[0026] Figure 4 This is a schematic diagram of the overall structure of the invention from a third-person perspective;

[0027] Figure 5 For the present invention Figure 4 Enlarged view of section B;

[0028] Figure 6 This is a schematic diagram of the internal structure of the present invention;

[0029] Figure 7 For the present invention Figure 6 Enlarged view of section C;

[0030] Figure 8 This is a schematic diagram of the flexible occlusion capsule of the present invention.

[0031] Legend: 1. Collection tube; 2. Connecting cylinder; 3. Power mechanism; 301. Mounting bracket; 302. Rotating shaft; 303. Worm gear; 304. Handle; 305. Annular worm gear; 306. First rotating ring; 307. Annular bevel gear; 308. Transmission bevel gear; 4. Adjustment assembly; 401. Rotating disk; 402. Second rotating ring; 403. Locking screw; 5. Connecting assembly; 501. Arc-shaped connecting plate; 502. Bolt; 6. Positioning assembly; 601. Fixed shaft; 602. Pointer; 603. Positioning groove; 7. Flexible sealing bladder; 8. Fixing assembly; 801. Threaded rod; 802. Limiting cylinder; 803. Extrusion rod; 9. Guide frame; 10. Moving seat; 11. Transmission rod; 12. Connecting rod; 13. Cleaning plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Reference Figure 1-8This invention provides a self-adjusting device for preventing backflow in road rainwater collection pipes, comprising a collection pipe 1, a connecting cylinder 2 sleeved at the outlet end of the collection pipe 1, a power mechanism 3 at the upper end of the connecting cylinder 2, and multiple sets of fixing components 8 evenly distributed around the circumference of the connecting cylinder 2 inside the connecting cylinder 2. The power mechanism 3 provides power to the multiple sets of fixing components 8 simultaneously, and the fixing components 8 are used to fix the connecting cylinder 2 to the collection pipe 1. An adjustment component 4 is provided at the front end of the connecting cylinder 2, and a connecting component 5 is provided at the front end of the adjustment component 4. A flexible sealing bladder 7 is provided inside the collection pipe 1, and the adjustment component 4 is connected to the flexible sealing bladder 7 through the connecting component 5. The device also includes a positioning component 6, which is located at the front end of the adjustment component 4. The flexible sealing bladder 7 is made of rubber material and is eccentrically conical in shape. The tip of the flexible sealing bladder 7 is located inside the collection pipe 1, and the larger end of the flexible sealing bladder 7 is located at the outlet end of the collection pipe 1 and is fixed to the connecting cylinder 2 through the connecting component 5.

[0034] In use, the flexible sealing bag 7 is first installed on the connecting cylinder 2 using the connecting component 5. Then, the connecting cylinder 2 is fitted onto the outlet end of the collecting pipe 1. Next, the power mechanism 3 provides power to the fixing component 8, allowing multiple fixing components 8 to operate simultaneously. With the operation of these components, the connecting cylinder 2 is fixed to the collecting pipe 1, thus achieving the installation of the flexible sealing bag 7. This makes installation of the flexible sealing bag 7 inside the collecting pipe 1 more convenient and faster. After installing the flexible sealing bag 7, the installation angle of the flexible sealing bag 7 is adjusted using the adjusting component 4. With the cooperation of the positioning component 6, the tip of the flexible sealing bag 7 is positioned at the top of the collecting pipe 1, and the lower part of the larger end of the flexible sealing bag 7 is positioned at the bottom of the collecting pipe 1. When water flows through the flexible sealing bladder 7, it can be squeezed and deformed according to the size of the water flow. When the water flow is large, the squeezing deformation of the flexible sealing bladder 7 is greater, and vice versa. In this way, the flexible sealing bladder 7 can change its squeezing deformation according to the water flow rate, thereby meeting the needs of different water flow rates. In addition, the cone-shaped flexible sealing bladder 7 can also reduce the impact of the water flow on the flexible sealing bladder 7 when water flows through it, thereby improving the service life of the device. When the water level is higher than the water level in the collection pipe 1, the water will enter the interior of the flexible sealing bladder 7, causing the flexible sealing bladder 7 to expand and block the outlet end of the collection pipe 1, thus effectively preventing water from flowing back into the collection pipe 1.

[0035] In the embodiments, such as Figures 3 to 7As shown, the power mechanism 3 includes a mounting frame 301, a rotating shaft 302, a worm gear 303, a handle 304, an annular worm wheel 305, a first rotating ring 306, an annular bevel gear 307, and multiple transmission bevel gears 308. The mounting frame 301 is fixedly mounted on the upper end of the connecting cylinder 2. The rotating shaft 302 is rotatably connected inside the mounting frame 301. The handle 304 is fixedly connected to the end of the rotating shaft 302. The worm gear 303 is fixedly connected to the circumferential surface of the rotating shaft 302. The first rotating ring 304 is rotatably connected to the circumferential surface of the connecting cylinder 2. A first rotating ring 306 has a ring-shaped worm gear 305 fixedly connected to its circumference, which meshes with a worm 303. A ring-shaped bevel gear 307 is fixedly connected to the rear end of the first rotating ring 306, meshing with multiple sets of transmission bevel gears 308. The number of transmission bevel gears 308 matches the number of fixed components 8 and they are installed accordingly. Each set of transmission bevel gears 308 is connected to a corresponding fixed component 8 for transmitting power to each fixed component 8. During operation, rotating the handle 304 drives the rotating shaft 302 to rotate inside the mounting bracket 301, which in turn drives the worm 303 to rotate. As the worm 303 rotates, the ring-shaped worm gear 305, in conjunction with the ring-shaped worm gear 305, drives the first rotating ring 306 to rotate, which in turn drives the ring-shaped bevel gear 307 to rotate. Since the transmission bevel gears 308 correspond to the fixed components 8, they can simultaneously provide power to multiple sets of fixed components 8.

[0036] In the embodiments, such as Figure 6 and Figure 7 As shown, each set of fixing components 8 includes a threaded rod 801, a limiting cylinder 802, and a pressing rod 803. The limiting cylinder 802 is fixedly connected inside the connecting cylinder 2. The pressing rod 803 is slidably connected inside the limiting cylinder 802, and the pressing rod 803 passes through the inner arc end of the connecting cylinder 2. The threaded rod 801 is threadedly connected inside the pressing rod 803. The end of the threaded rod 801 away from the pressing rod 803 passes through the outer arc end of the connecting cylinder 2 and is rotatably connected to the connecting cylinder 2. The threaded rod 801 of each set of fixing components 8 is fixedly connected to the corresponding transmission bevel gear 308. During operation, as multiple transmission bevel gears 308 rotate simultaneously, multiple threaded rods 801 can be driven to rotate simultaneously. Then, with the cooperation of the threaded rods 801, multiple pressing rods 803 can be driven to slide inside the limiting cylinder, and at the same time, multiple pressing rods 803 move closer to the collecting tube 1. This fixes the connecting cylinder 2 to the collecting tube 1, thereby facilitating the installation of the flexible sealing bag 7 inside the collecting tube 1.

[0037] In this embodiment, the end of the extrusion rod 803 near the collection tube 1 is arranged in a concave arc shape and can match the surface of the collection tube 1. The end of the extrusion rod 803 near the threaded rod 801 is provided with a threaded groove, which cooperates with the threaded rod 801. During operation, since the end of the extrusion rod 803 near the collection tube 1 is arranged in an arc shape, the contact area between the extrusion rod 803 and the collection tube 1 can be increased, thereby improving the extrusion stability of the extrusion rod 803.

[0038] In the embodiments, such as Figures 1 to 3 , Figure 7 As shown, the adjustment assembly 4 includes a rotating disk 401, a second rotating ring 402, and a locking screw 403. The second rotating ring 402 is rotatably connected to the front end of the connecting cylinder 2. The cross-section of the second rotating ring 402 is T-shaped, and the rotating disk 401 is fixedly connected to the front end of the second rotating ring 402. The locking screw 403 is threadedly connected to the upper side of the front end of the connecting cylinder 2. During operation, when adjustment is needed, the locking screw 403 is loosened, which releases the fixation of the second rotating ring 402, thereby facilitating the rotation of the rotating disk 401. With the rotation of the rotating disk 401, the installation angle of the flexible occlusion bladder 7 can be easily changed with the cooperation of the connecting assembly 5, so that the tip of the flexible occlusion bladder 7 can be attached to the top of the inside of the collection tube 1, and the lower part of the large end of the flexible occlusion bladder 7 can be attached to the bottom of the collection tube 1. This facilitates the occlusion work of the flexible occlusion bladder 7.

[0039] In the embodiments, such as Figures 1 to 3 As shown, the positioning component 6 includes a fixed shaft 601, a pointer 602, and a positioning groove 603. The fixed shaft 601 is fixedly connected to the upper front end of the rotating disk 401, and the pointer 602 is rotatably connected to the circumferential surface of the fixed shaft 601. The front end face of the rotating disk 401 has a positioning groove 603 corresponding to the pointer 602. During operation, when the projection of the pointer 602 coincides with the positioning groove 603 during adjustment, the flexible sealing bag 7 can be placed vertically, which facilitates adjustment by the worker.

[0040] In the embodiments, such as Figure 2 and Figure 8As shown, the connecting assembly 5 includes an arc-shaped connecting plate 501 and a bolt 502. The front end of the flexible sealing bladder 7 is fixedly connected to the arc-shaped connecting plate 501, which is arc-shaped. The bolt 502 is installed through the arc-shaped connecting plate 501 and is threadedly connected to the rotating disk 401. During operation, the bolt 502 passes through the arc-shaped connecting plate 501 and is threadedly connected to the rotating disk 401. At this time, the flexible sealing bladder 7 can be installed on the connecting cylinder 2. Since the arc-shaped connecting plate 501 is semi-circular and fixed to the upper half of the flexible sealing bladder 7, the lower half of the flexible sealing bladder 7 is in an open state, which facilitates the water flow from the collection pipe 1 to the outside. When the water level is higher than the water level in the collection pipe 1, the water will enter the interior of the flexible sealing bladder 7, causing the flexible sealing bladder 7 to expand and block the outlet end of the collection pipe 1, thus effectively preventing water from flowing back into the collection pipe 1.

[0041] In the embodiments, such as Figure 6 As shown, a guide frame 9 is fixedly connected inside the collection pipe 1. The guide frame 9 is fixed to the inner wall of the collection pipe 1 via a connecting rod. A movable seat 10 is slidably connected to the guide frame 9. A transmission rod 11 is rotatably connected to the upper end of the movable seat 10. The end of the transmission rod 11 away from the movable seat 10 is rotatably connected to the flexible sealing bladder 7. A connecting rod 12 is fixedly connected to the lower end of the movable seat 10. A cleaning plate 13 is fixedly connected to the end of the connecting rod 12 away from the movable seat 10. The cleaning plate 13 is arc-shaped and fits tightly against the bottom of the wall of the collection pipe 1. During operation, when the flexible sealing bladder 7 deforms under pressure according to the water flow intensity, it will cause the movable seat 10 to slide on the guide frame 9 with the help of the transmission rod 11. The sliding of the movable seat 10 drives the connecting rod 12 to make the cleaning plate 13 move inside the collection pipe 1. The operation of the cleaning plate 13 can clean the inner wall of the collection pipe 1, preventing impurities and dirt from accumulating on the inner wall of the collection pipe 1, and ensuring smooth drainage of the collection pipe 1. When the water level in the water body is higher than that in the collection pipe 1, water enters the flexible sealing bladder 7, causing it to expand. This expansion then moves the cleaning plate 13 into the collection pipe 1, preventing debris from accumulating at the outlet and ensuring the flexible sealing bladder 7 fits better against the inner wall of the collection pipe 1, thus improving the backflow prevention function. Furthermore, this cleaning function reduces the frequency of manual cleaning of the collection pipe 1, decreasing maintenance costs and workload, and enhancing the practicality and reliability of the entire road stormwater collection pipeline backflow prevention self-adjustment device. During long-term use, the cleaning plate 13 continuously cleans the inner wall of the collection pipe 1, effectively extending the service life of the collection pipe 1 and the flexible sealing bladder 7, further improving the overall performance of the device.

[0042] The embodiment provides a method for using a self-regulating device to prevent backflow in road rainwater harvesting pipes. The method specifically includes the following steps:

[0043] S1: Fit the connecting sleeve 2 onto the collecting pipe 1;

[0044] S2: Loosen the adjusting component 4, and with the cooperation of the connecting component 5, drive the flexible occlusion bladder 7 to rotate. With the cooperation of the positioning component 6, adjust the position of the flexible occlusion bladder 7 so that the tip of the flexible occlusion bladder 7 is attached to the top of the inside of the collection tube 1, and the lower part of the large end of the flexible occlusion bladder 7 is attached to the bottom of the collection tube 1.

[0045] S3: After adjusting the position of the flexible occlusion bladder 7, the power mechanism 3 works to provide power to multiple sets of fixing components 8. With the cooperation of multiple sets of fixing components 8, the flexible occlusion bladder 7 is installed on the collection tube 1.

[0046] S4: When rainwater flows back, the rainwater enters the flexible sealing bladder 7, causing the flexible sealing bladder 7 to automatically expand and adhere to the inner wall of the collection pipe 1. At the same time, the expansion of the flexible sealing bladder 7, with the cooperation of the transmission rod 11, drives the moving seat 10 to slide on the guide frame 9, and then, with the cooperation of the connecting rod 12, drives the cleaning plate 13 to move into the collection pipe 1, thereby cleaning the outlet of the collection pipe 1. This helps the flexible sealing bladder 7 to make tight contact with the inner wall of the collection pipe 1, thus achieving the function of preventing backflow.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-regulating device for preventing backflow in road rainwater collection pipes, comprising a collection pipe (1), characterized in that: The regulating device includes a connecting cylinder (2) sleeved on the outlet end of the collecting pipe (1) and a flexible sealing bladder (7) located inside the collecting pipe (1). The diameter of the flexible sealing bladder (7) gradually decreases from the open end to the closed end, and the upper part of the open end of the flexible sealing bladder (7) is fixed to the outer port of the connecting cylinder (2) by a connecting component (5). A power mechanism (3) is provided at the upper end of the connecting cylinder (2). Multiple sets of fixing components (8) are provided inside the connecting cylinder (2). The multiple sets of fixing components (8) are arranged in a ring along the outer edge of the connecting cylinder (2). The power mechanism (3) is used to provide power to the multiple sets of fixing components (8) at the same time, and to fix the connecting cylinder (2) and the collecting pipe (1) through the fixing components (8). The power mechanism (3) includes a mounting frame (301), a drive assembly, a first rotating ring (306), an annular bevel gear (307), and multiple transmission bevel gears (308). The number of transmission bevel gears (308) matches the number of fixed assemblies (8), and each transmission bevel gear (308) is fixedly mounted on the power input end of the corresponding fixed assembly (8). The mounting frame (301) is fixedly mounted on the upper end of the connecting cylinder (2). The first rotating ring (306) is rotatably mounted on the circumferential surface of the connecting cylinder (2). The annular bevel gear (307) is fixedly mounted on the side of the first rotating ring (306), and the annular bevel gear (307) meshes with multiple transmission bevel gears (308) respectively. The drive assembly is set on the mounting frame (301) to provide power to the first rotating ring (306), control the rotation of the first rotating ring (306), and simultaneously drive multiple transmission bevel gears (308) to rotate, and transmit power to multiple sets of fixed assemblies (8) at the same time. The collection tube (1) is fixedly connected to a guide frame (9), which is fixed on the lower inner wall of the collection tube (1). A movable seat (10) is slidably connected to the guide frame (9). A transmission rod (11) is rotatably connected to the upper end of the movable seat (10). The end of the transmission rod (11) away from the movable seat (10) is rotatably connected to the flexible sealing bag (7). A connecting rod (12) is fixedly connected to the lower end of the movable seat (10). A cleaning plate (13) is fixedly connected to the end of the connecting rod (12) away from the movable seat (10). The cleaning plate (13) is an arc-shaped plate.

2. The self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 1, characterized in that: The flexible plugging bladder (7) is made of rubber material and has an eccentric cone shape. The tip of the flexible plugging bladder (7) is located inside the collection tube (1), and the opening end of the flexible plugging bladder (7) is located at the water outlet end of the collection tube (1).

3. The self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 1, characterized in that: The fixing component (8) includes a threaded rod (801), a limiting cylinder (802), and a pressing rod (803). The limiting cylinder (802) is fixedly connected inside the connecting cylinder (2). The pressing rod (803) is slidably connected inside the limiting cylinder (802). The pressing rod (803) passes through the inner arc end of the connecting cylinder (2). The threaded rod (801) is threadedly connected inside the pressing rod (803). The end of the threaded rod (801) away from the pressing rod (803) passes through the outer arc end of the connecting cylinder (2) and is rotatably connected to the connecting cylinder (2). The threaded rod (801) is fixedly connected to the transmission bevel gear (308). The end of the pressing rod (803) near the collecting pipe (1) is arc-shaped. The end of the pressing rod (803) near the threaded rod (801) is provided with a threaded groove, which cooperates with the threaded rod (801).

4. The self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 1, characterized in that: The drive assembly includes a rotating shaft (302), a worm (303), and an annular worm wheel (305). The rotating shaft (302) is rotatably connected inside the mounting bracket (301). A handle (304) is fixedly connected to the end of the rotating shaft (302). The worm (303) is fixedly connected to the circumferential surface of the rotating shaft (302). The annular worm wheel (305) is fixed to the circumferential surface of the first rotating ring (306), and the annular worm wheel (305) meshes with the worm (303).

5. A self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 2, characterized in that: The front end of the connecting cylinder (2) is provided with an adjustment component (4). The adjustment component (4) includes a rotating disk (401), a second rotating ring (402), and a locking screw (403). The second rotating ring (402) is rotatably installed inside the front end of the connecting cylinder (2). The cross section of the second rotating ring (402) is T-shaped. The front end of the second rotating ring (402) is fixedly connected to the rotating disk (401). The upper side of the front end of the connecting cylinder (2) is threaded with a locking screw (403). The locking screw (403) is used to lock the second rotating ring (402).

6. The self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 5, characterized in that: The connecting assembly (5) includes an arc-shaped connecting plate (501) and a bolt (502). The arc-shaped connecting plate (501) is fixed at the opening of the flexible sealing bladder (7). The arc-shaped connecting plate (501) is connected to the rotating disk (401) of the adjusting assembly (4) by the bolt (502).

7. A self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 6, characterized in that: The rotating disk (401) is provided with a positioning component (6) at its front end. The positioning component (6) includes a fixed shaft (601), a pointer (602) and a positioning groove (603). The positioning groove (603) is located on the midline of the arc-shaped connecting plate (501). The fixed shaft (601) is located above the positioning groove (603). The pointer (602) is rotatably mounted on the fixed shaft (601). The arc-shaped connecting plate (501) is set in the same position as the tip of the flexible occlusion bladder (7). After the flexible occlusion bladder (7) is installed into the collection tube (1), when the pointer (602) is vertically downward in the positioning groove (603), the tip of the flexible occlusion bladder (7) is located at the top of the inner wall of the collection tube (1).

8. A method of using the self-regulating device for preventing backflow in road rainwater harvesting pipes as described in any one of claims 1 to 7, characterized in that, Specifically, the following steps are included: S1. Place the connecting tube (2) onto the collecting tube (1) so that the tip of the flexible sealing bag (7) is attached to the top of the inside of the collecting tube (1) and the lower part of the large end of the flexible sealing bag (7) is attached to the bottom of the collecting tube (1). S2. After adjusting the position of the flexible occlusion bladder (7), the power mechanism (3) simultaneously provides power to multiple sets of fixing components (8), and with the cooperation of multiple sets of fixing components (8), the flexible occlusion bladder (7) is installed on the collection tube (1); S3. When rainwater flows back into the water, the rainwater enters the interior of the flexible sealing bladder (7), causing the flexible sealing bladder (7) to expand automatically and adhere to the inner wall of the collection pipe (1), thus achieving the function of preventing backflow.

9. The method of using the self-regulating device for preventing backflow in road rainwater collection pipelines according to claim 8, characterized in that: The collection pipe (1) is fixedly connected to a guide frame (9), a movable seat (10), a transmission rod (11), a connecting rod (12), and a cleaning plate (13). The cleaning plate (13) is an arc-shaped plate. When rainwater backflow occurs in step S3, the expansion of the flexible sealing bladder (7) drives the movable seat (10) to slide on the guide frame (9) with the cooperation of the transmission rod (11), and then drives the cleaning plate (13) to move into the collection pipe (1) with the cooperation of the connecting rod (12), thereby cleaning the outlet of the collection pipe (1) and making the flexible sealing bladder (7) in close contact with the inner wall of the collection pipe (1).

Images