Municipal rainwater drainage system not prone to blockage and rainwater drainage method
By using technologies such as upper and lower blocking devices and anti-fall nets in the municipal rainwater drainage system, the blockage problem caused by dirt deposition is solved, and the smooth discharge of rainwater and the stable operation of the system is achieved.
Patent Information
- Application Number
- CN202411526419.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-13
AI Technical Summary
The existing municipal rainwater drainage system is prone to be blocked due to dirt deposits during heavy rainstorms, resulting in the inability to discharge rainwater in time.
Install an upper blocking device and a lower blocking device in the inspection well to form a cavity where water supply flows through. The silt and sand are collected in the upper blocking device to avoid excessive accumulation of silt and sand at the bottom of the inspection well. It is automatically notified by combining the anti-fall net and tension sensor. Clean up the sanitation agency, and the water level detection device promptly notify the staff to clean up the garbage.
It effectively avoids pipeline blockage caused by silt accumulation, ensures unobstructed drainage system, ensures timely discharge of rainwater, and reduces the risk of blockage.
Smart Images
Figure CN119122081A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a municipal rainwater drainage system, in particular to a municipal rainwater drainage system and a rainwater drainage method which are not easy to be blocked. Background Art
[0002] With the rapid advancement of urbanization, the construction and management of urban drainage systems have become increasingly important. Especially in the season of frequent heavy rains, the efficiency of urban drainage systems is directly related to the city's flood control capacity and the quality of life of residents.
[0003] Chinese patent CN215563115U discloses an initial rainwater collection device for a municipal road based on rainwater and sewage diversion, including a rainwater inspection well and a sewage inspection well, wherein a rainwater sealing cover is connected to the top of the rainwater inspection well, and an entrance is opened on the rainwater sealing cover, a primary treatment cylinder is fixed to the inner top of the rainwater inspection well, and a rainwater collection box is connected to the bottom of the primary treatment cylinder, a sewage sealing cover is connected to the top of the sewage inspection well, a liquid level sensor for monitoring the water level is provided at the top of the inner wall of the sewage inspection well, a controller is fixed to the base surface of the sewage inspection well, and a connecting structure is connected to both ends of the rainwater sealing cover and the sewage sealing cover. Although the above structure has a dirt interception mechanism, some dirt will still be deposited at the bottom of the inspection well. As the dirt increases, the dirt will gradually block the pipe, resulting in the inability to discharge rainwater in time.
[0004] In order to solve these problems and drain the rainwater in time, it is extremely important to design a municipal rainwater drainage system that is not easy to be blocked. Summary of the invention
[0005] The object of the present invention is to provide a municipal rainwater drainage system and a rainwater drainage method that are not easy to be clogged. An upper blocking device and a lower blocking device are installed in the inspection well, and a cavity for water to flow through is formed between the upper blocking device, the lower blocking device and the inspection well, so that mud and sand are collected in the upper blocking device, thereby avoiding excessive accumulation of mud and sand at the bottom of the inspection well, thereby clogging the sewage pipe.
[0006] In order to solve the problems of the prior art, the present invention provides a municipal rainwater drainage system which is not easy to be blocked, comprising an inspection well buried vertically underground and a sewage pipe at a distance from the bottom of the inspection well, the sewage pipe being used for rainwater to flow into a river channel, a wellhead being fixed on the top of the inspection well, a lower blocking device being arranged at the bottom of the inspection well, an upper blocking device being arranged at a position on the top of the lower blocking device inside the inspection well, the upper end of the upper blocking device being larger than the lower end of the upper blocking device, the upper end of the lower blocking device being larger than the lower end of the lower blocking device, the lower end of the upper blocking device being coupled with the upper end of the lower blocking device, a cavity for water flow to pass through being formed between the upper blocking device and the inspection well, a cavity for water flow to pass through being formed at the connection between the lower blocking device, the inspection well and the sewage pipe, when rainwater flows into the inspection well, the rainwater enters the sewage pipe and is discharged into the river, the silt in the rainwater gathers in the lower blocking device, and then the silt will not be blocked at the junction of the sewage pipe and the inspection well.
[0007] Preferably, a plurality of limit blocks are fixed around the top of the lower blocking device, the bottom of the upper blocking device is in contact with the top of the lower blocking device, and the bottom of the upper blocking device is sleeved on the outside of the limit blocks, which prevent the upper blocking device from swaying under the impact of the water flow.
[0008] Preferably, a fall prevention net is detachably mounted on the top of the upper blocking device, the bottom of the fall prevention net is inserted into the top of the upper blocking device, the fall prevention net and the upper blocking device are fixed to each other by fasteners, the fall prevention net is movably arranged in the wellhead, and a fixing device for fixing the fall prevention net is arranged on the top of the wellhead, and the fixing device is arranged on the inner wall of the wellhead.
[0009] Preferably, a vertically downward limiting groove is provided on the top of the lower blocking device, and a connector that cooperates with the limiting groove is provided on the bottom of the upper blocking device. The connector at the bottom of the upper blocking device is inserted into the limiting groove in the lower blocking device, and the limiting groove and the connector cooperate to prevent the upper blocking device from shaking under the impact of the water flow.
[0010] Preferably, the lower blocking device is made of concrete, and the lower blocking device and the inspection well are fixed together with the inspection well through concrete.
[0011] Preferably, the lower blocking device is made of steel or metal, and the lower blocking device is fixed inside the inspection well by fasteners.
[0012] Preferably, the surface of the upper blocking device is provided with a plurality of through holes for water to flow through, the surface of the lower blocking device is also provided with through holes for water to flow through, and the surface of the anti-fall net is also provided with through holes for water to flow through.
[0013] Preferably, the fixing device includes a steel wire rope, one end of which is connected to the top of the anti-fall net, and the other end of the steel wire rope is connected to the hook. The fixing device also includes a connector, and a tension sensor is prefabricated in the connector. The hook is hung on the connector, and the connector is fixed to the inner wall of the wellhead by threads. When there is too much garbage in the anti-fall net and the upper blocking device, the weight of the anti-fall net and the upper blocking device increases, and the anti-fall net and the upper blocking device apply tension to the hook through the steel wire rope, and then the tension sensor in the connector detects the tension of the anti-fall net and the upper blocking device. When the tension exceeds the set value, the sanitation agency is notified to clean up the garbage in the anti-fall net and the upper blocking device.
[0014] Preferably, a water level detection device is installed near the top of the cavity between the inspection well and the upper blocking device. The water level detection device includes a protective shell and a signal transmitter installed in the protective shell. A pressure sensor is connected to one side of the signal transmitter. When the pressure sensor is subjected to pressure, a pressure signal is generated, and the signal is sent to the system of the sanitation agency through the signal transmitter. A float plate is also provided in the protective shell. When the water level in the wellhead rises, the float plate moves, and the float plate contacts the pressure sensor, causing the pressure sensor to generate a pressure signal. A support plate is installed at the bottom of the protective shell, and the support plate is designed with an opening to allow water to pass through and enter the protective shell.
[0015] A municipal rainwater drainage method, comprising the municipal rainwater drainage system that is not easily blocked as described in the above scheme, comprises the following steps:
[0016] S1: After rainwater enters the inspection well from the wellhead, it passes through the through holes in the lower blocking device, the anti-fall net and the upper blocking device and enters the cavity of the inspection well and the upper blocking device, and the water flows from the sewage pipe into the river;
[0017] S2: Because there is garbage or silt in the water, when the water passes through the anti-fall net, the larger garbage is blocked, and the silt enters the upper blocking device with the water for collection. As time goes by, the silt will gradually increase in the upper blocking device;
[0018] S3: When there is too much garbage in the anti-fall net and the upper blocking device, the weight of the anti-fall net and the upper blocking device increases, and the anti-fall net and the upper blocking device apply tension to the hook through the wire rope, and then the tension sensor in the connector detects the tension of the anti-fall net and the upper blocking device. When the tension exceeds the set value, the sanitation agency is notified to clean up the garbage in the anti-fall net and the upper blocking device;
[0019] S4: If there is too much garbage in the upper blocking device and the rainfall is too heavy, the water level in the inspection well will gradually rise. When the water level rises and the float plate contacts the pressure sensor, the pressure sensor will generate a pressure signal when it is under pressure. The signal will be sent to the system of the sanitation agency through the signal transmitter to notify the staff to clean up the garbage in the upper blocking device.
[0020] Compared with the prior art, the beneficial effects of the present invention are: the municipal rainwater drainage system and rainwater drainage method that are not easy to be blocked have reasonable structures and have the following advantages:
[0021] (1) The present invention installs a lower blocking device and an upper blocking device in the inspection well, and a cavity for water supply is formed between the lower blocking device, the upper blocking device and the inspection well. Rainwater passes through the anti-fall net to block larger garbage, and mud and sand enter the upper blocking device with the rainwater. Then the mud and sand are deposited in the lower blocking device. As the mud and sand accumulate, rainwater can also flow from the cavity above the upper blocking device into the sewage pipe, thereby reducing the amount of mud and sand entering the sewage pipe, thereby avoiding a large amount of mud and sand entering the sewage pipe and causing blockage in the sewage pipe, greatly reducing the deposition of mud and sand at the bottom of the inspection well and in subsequent pipes, effectively avoiding the problem of pipe blockage caused by excessive mud and sand accumulation, and ensuring the smooth flow of the drainage system.
[0022] (2) The present invention has a steel wire rope connected to the anti-fall net, a hook connected to the steel wire rope, and the hook is hung on a connector, and a tension sensor is prefabricated in the connector. When there is too much garbage in the anti-fall net and the upper blocking device, their weight increases, and tension is applied to the hook through the steel wire rope, and then the tension sensor in the connector detects the tension. When the tension exceeds the set value, the system can automatically notify the sanitation agency to clean it up, avoiding the problem of pipeline blockage caused by too much garbage in the inspection well and untimely discovery.
[0023] (3) The present invention also installs a water level detection device near the top of the cavity between the inspection well and the upper blocking device, and the device includes a pressure sensor, a signal transmitter and a floating plate. When there is too much garbage in the upper blocking device or when there is too much rain, the water level in the inspection well will gradually rise. Once the water level rises to the point where the floating plate contacts the pressure sensor, the pressure sensor will be pressurized and generate a pressure signal, which will be sent to the system of the sanitation agency through the signal transmitter, so as to promptly notify the staff to clean up the garbage in the upper blocking device and ensure that rainwater can be discharged smoothly. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the external three-dimensional structure of a municipal rainwater drainage system that is not easy to be clogged.
[0025] Figure 2It is a schematic diagram of the cross-sectional structure of a municipal rainwater drainage system that is not easy to clog.
[0026] Figure 3 The present invention is a schematic diagram of the exploded structure of the lower blocking device and the upper blocking device of the first embodiment of a municipal rainwater drainage system that is not easy to be clogged.
[0027] Figure 4 It is a top view structural diagram of a municipal rainwater drainage system that is not easy to be clogged.
[0028] Figure 5 It is a schematic diagram of the structure of a municipal rainwater drainage system that is not easy to be clogged.
[0029] Figure 6 The present invention is a three-dimensional structural schematic diagram of a water level detection device for a municipal rainwater drainage system which is not easy to be clogged.
[0030] Figure 7 It is a municipal rainwater drainage system that is not easy to clog. Figure 2 Enlarged structural diagram at A in the middle.
[0031] Figure 8 It is a municipal rainwater drainage system that is not easy to clog. Figure 2 Enlarged structural diagram at B in the middle.
[0032] Fig. 9 The present invention is a three-dimensional structural schematic diagram of a lower blocking device of a second embodiment of a municipal rainwater drainage system that is not easily clogged.
[0033] Fig.10 The present invention is a structural schematic diagram of an upper blocking device and a lower blocking device of a third embodiment of a municipal rainwater drainage system that is not easily clogged when they are spliced.
[0034] The numbers in the figure are: 1. inspection well; 2. sewage pipe; 3. wellhead; 4. lower blocking device; 41. limit block; 42. limit groove; 5. anti-fall net; 6. water level detection device; 61. protective shell; 62. pressure sensor; 63. signal transmitter; 64. floating plate; 65. support plate; 7. fixing device; 71. connector; 72. hook; 73. wire rope; 8. upper blocking device. DETAILED DESCRIPTION
[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0036] Reference Figure 1 and Figure 2As shown, the present invention provides: a municipal rainwater drainage system that is not easy to be blocked, including a manhole 1 buried vertically in the ground and a sewage pipe 2 at one end distance from the bottom of the manhole 1, the sewage pipe 2 is used for rainwater to flow into the river, and a wellhead 3 is fixed on the top of the manhole 1. The manhole 1 is made of high-strength corrosion-resistant materials (such as stainless steel, fiberglass or special concrete) to ensure that it will not deform or corrode during long-term use in harsh environments. A lower blocking device 4 is provided at the bottom of the manhole 1, and an upper blocking device 8 is provided at the top of the lower blocking device 4 inside the manhole 1. The upper blocking device 8 is made of lightweight and high-strength engineering plastics or corrosion-resistant metals, and the surface is specially treated to enhance its wear resistance and anti-scouring capabilities. At the same time, these devices can be designed as a structure that is easy to disassemble, which is convenient for regular cleaning and maintenance. The upper end of the upper blocking device 8 is larger than the lower end of the upper blocking device 8, the upper end of the lower blocking device 4 is larger than the lower end of the lower blocking device 4, the lower end of the upper blocking device 8 and the upper end of the lower blocking device 4 are coupled with each other, and a cavity for water flow is formed between the upper blocking device 8 and the inspection well 1, and a cavity for water flow is formed at the connection between the lower blocking device 4, the inspection well 1 and the sewage pipe 2. When rainwater flows into the inspection well 1, the rainwater enters the sewage pipe 2 and is discharged into the river, and the silt in the rainwater gathers in the lower blocking device 4, so that the silt will not be blocked at the junction of the sewage pipe 2 and the inspection well 1.
[0037] In this embodiment, a cavity for water supply is formed between the lower blocking device 4 and the upper blocking device 8 and the inspection well 1. Rainwater passes through the anti-fall net 5 to block larger garbage, and mud and sand enter the upper blocking device 8 with the rainwater. Then the mud and sand are deposited in the lower blocking device 4. The mud and sand accumulate more and more, so that rainwater can also flow into the sewage pipe 2 from the cavity above the upper blocking device 8, thereby reducing the amount of mud and sand entering the sewage pipe 2, thereby avoiding a large amount of mud and sand entering the sewage pipe 2 and causing blockage in the sewage pipe 2, greatly reducing the deposition of mud and sand at the bottom of the inspection well and in subsequent pipes, effectively avoiding the problem of pipe blockage caused by excessive mud and sand accumulation, and ensuring the smooth flow of the drainage system.
[0038] Example 1: Reference Figure 3-5As shown, a number of limit blocks 41 are fixed around the top of the lower blocking device 4, the bottom of the upper blocking device 8 is in contact with the top of the lower blocking device 4, and the bottom of the upper blocking device 8 is sleeved on the outside of the limit blocks 41. The limit blocks 41 prevent the upper blocking device 8 from swaying under the impact of the water flow, and the limit blocks 41 can perfectly match the contour of the bottom of the upper blocking device 8. In this way, when the upper blocking device 8 is installed in place, its bottom can be tightly sleeved on the outside of the limit blocks 41 to form a tight combination. This design not only enhances the stability of the structure, but also, under strong water flow conditions, rainwater may enter the inspection well 1 at a greater speed and impact force. At this time, the limit blocks 41 play an important role, effectively limiting the lateral movement and swaying of the upper blocking device 8, and ensuring the stability and reliability of the entire drainage system.
[0039] The anti-fall net 5 is detachably installed on the top of the upper blocking device 8. As an important accessory of the upper blocking device 8, the anti-fall net 5 is mainly used to prevent large debris (such as branches, stones, etc.) or accidentally dropped objects from entering the inspection well 1, thereby protecting the drainage system from blockage and damage. The bottom of the anti-fall net 5 is inserted into the top of the upper blocking device 8. The anti-fall net 5 and the upper blocking device 8 are fixed to each other by fasteners. The anti-fall net 5 adopts a detachable installation method, which is convenient for cleaning, replacement or maintenance when necessary. The anti-fall net 5 is movably arranged in the wellhead 3. A fixing device 7 for fixing the anti-fall net 5 is arranged on the top of the anti-fall net 5. The fixing device 7 is arranged on the inner wall of the wellhead 3. In order to further enhance the stability of the anti-fall net 5, a fixing device 7 is arranged on the inner wall of the wellhead 3. These fixing devices 7 can be hooks, brackets or other forms of fixing parts, which are connected to the corresponding parts of the top of the anti-falling net 5 to jointly bear the weight and impact of the anti-falling net 5. The anti-falling net 5 is usually made of high-strength, corrosion-resistant materials, such as stainless steel nets, nylon nets, etc. These materials not only have excellent physical properties, but also can resist the scouring of water flow and the erosion of chemical substances, ensuring that the anti-falling net 5 can be used for a long time without damage.
[0040] Example 2, reference Fig. 9 As shown, a vertically downward limiting groove 42 is provided on the top of the lower blocking device 4, and a plug-in fitting that cooperates with the limiting groove 42 is provided at the bottom of the upper blocking device 8. The plug-in fitting at the bottom of the upper blocking device 8 is inserted into the limiting groove 42 in the lower blocking device 4. The limiting groove 42 and the plug-in fitting cooperate to prevent the upper blocking device 8 from shaking under the impact of the water flow. The plug-in fitting at the bottom of the upper blocking device 8 is designed with a shape and size that matches the limiting groove 42 to ensure that it can be smoothly inserted and tightly fitted in the limiting groove 42. The plug-in fitting may use a barb, a protrusion or other locking mechanism to increase the friction between the limiting groove 42 and prevent it from falling off under the impact of the water flow.
[0041] In this embodiment, when the upper blocking device 8 is installed in place, the plug-in connector at the bottom thereof will be accurately inserted into the limit groove 42 in the lower blocking device 4. This plug-in fit not only provides physical support, but also limits the lateral movement and shaking of the upper blocking device 8 under the impact of water flow through precise matching of shape and size. This design also takes into account future maintenance and replacement work. When it is necessary to clean, inspect or replace the upper blocking device 8, it can be simply pulled out of the limit groove 42. After completion, it can be reinserted into the limit groove 42 and fixed to resume use.
[0042] Example 3, reference Fig.10 As shown, the bottom of the upper blocking device 8 is directly inserted into the lower blocking device 4, which can prevent the upper blocking device 8 from shaking under the impact of the water flow.
[0043] The lower blocking device 4 is made of concrete, and the lower blocking device 4 and the inspection well 1 are fixed together with the inspection well 1 through concrete. The construction process of concrete pouring is relatively simple and does not require complicated equipment and processes. At the same time, since concrete materials are widely available and low in cost, it is also conducive to reducing construction costs and time. The concrete material itself has excellent durability and can resist erosion and wear in the natural environment.
[0044] The lower blocking device 4 is made of steel or metal and is fixed to the inside of the inspection well 1 by fasteners. The lower blocking device 4 made of steel or metal has high strength and stability, can effectively resist the impact of water flow and collision of debris, and protect the drainage system from damage. The maintenance and replacement of the lower blocking device 4 is simple and quick by fixing with fasteners, which reduces maintenance costs and workload.
[0045] The surface of the upper blocking device 8 is provided with several groups of through holes for water to flow through, the surface of the lower blocking device 4 is also provided with through holes for water to flow through, and the surface of the anti-fall net 5 is also provided with through holes for water to flow through. The through holes of the upper blocking device 8 and the lower blocking device 4 may be more finely designed to further block the passage of small debris while ensuring smooth water flow.
[0046] refer to Figure 7As shown; the fixing device 7 includes a wire rope 73, one end of the wire rope 73 is connected to the top of the anti-falling net 5, and the other end of the wire rope 73 is connected to the hook 72. The fixing device 7 also includes a connector 71, and a tension sensor is prefabricated in the connector 71. The hook 72 is hung on the connector 71, and the connector 71 is fixed to the inner wall of the wellhead 3 by threads. When there is too much garbage in the anti-falling net 5 and the upper blocking device 8, the weight of the anti-falling net 5 and the upper blocking device 8 increases, and the anti-falling net 5 and the upper blocking device 8 apply tension to the hook 72 through the wire rope 73, and then the tension sensor in the connector 71 detects the tension of the anti-falling net 5 and the upper blocking device 8. When the tension exceeds the set value, the sanitation agency is notified to clean up the garbage in the anti-falling net 5 and the upper blocking device 8.
[0047] In this embodiment, under normal circumstances, the anti-falling net 5 and the upper blocking device 8 can effectively intercept and block garbage from entering the drainage system. However, as time goes by, garbage may gradually accumulate on the anti-falling net 5 and the upper blocking device 8. When the garbage accumulates to a certain extent, the weight of the anti-falling net 5 and the upper blocking device 8 will increase, and then the wire rope 73 will apply tension to the hook 72. At this time, the tension sensor in the connector 71 will detect this tension change in real time. Once the tension exceeds the preset setting value (the setting value is determined comprehensively based on factors such as the load-bearing capacity of the anti-falling net 5 and the upper blocking device 8, the garbage accumulation speed, etc.), the tension sensor will immediately trigger the alarm mechanism to notify the sanitation agency to carry out the cleaning work. After receiving the notification, the sanitation agency can respond quickly and go to the scene to clean up. By cleaning the garbage in the anti-falling net 5 and the upper blocking device 8, the normal operation of the drainage system can be restored to prevent problems such as urban waterlogging caused by blockage.
[0048] refer to Figure 6 and Figure 8 As shown, a water level detection device 6 is installed near the top of the cavity between the inspection well 1 and the upper blocking device 8. The water level detection device 6 includes a protective shell 61 and a signal transmitter 63 installed in the protective shell 61. A pressure sensor 62 is connected to one side of the signal transmitter 63. When the pressure sensor 62 is subjected to pressure, a pressure signal is generated, and the signal is sent to the system of the sanitation agency through the signal transmitter 63. A floating plate 64 is also provided in the protective shell 61. When the water level in the wellhead 3 rises, the floating plate 64 moves, and the floating plate 64 contacts the pressure sensor 62, so that the pressure sensor 62 generates a pressure signal. A support plate 65 is installed at the bottom of the protective shell 61. The support plate 65 is designed with an opening to allow water to pass through and enter the protective shell 61.
[0049] In this example, when the water level in the inspection well 1 rises, the floating plate 64 will rise accordingly. When the floating plate 64 rises to a position in contact with the pressure sensor 62, the pressure sensor 62 will sense the pressure change and generate a pressure signal. This signal is then captured by the signal transmitter 63 and converted into a wireless signal and sent to the system of the sanitation agency. After receiving the signal, the sanitation agency can promptly understand the water level in the inspection well 1 and take appropriate measures to deal with it.
[0050] A municipal rainwater drainage method, comprising a municipal rainwater drainage system that is not easily blocked in the above scheme, comprising the following steps:
[0051] S1: After rainwater enters the inspection well 1 from the wellhead 3, it passes through the through holes in the lower blocking device 4, the anti-falling net 5 and the upper blocking device 8 and enters the cavity of the inspection well 1 and the upper blocking device 8, and the water flows from the sewage pipe 2 into the river;
[0052] S2: Since there is garbage or silt in the water, when the water passes through the anti-fall net 5, the larger garbage is blocked, and the silt enters the upper blocking device 8 with the water for collection. As time goes by, the silt will gradually increase in the upper blocking device 8;
[0053] S3: When there is too much garbage in the anti-falling net 5 and the upper blocking device 8, the weight of the anti-falling net 5 and the upper blocking device 8 increases, and the anti-falling net 5 and the upper blocking device 8 apply tension to the hook 72 through the wire rope 73, and then the tension sensor in the connector 71 detects the tension of the anti-falling net 5 and the upper blocking device 8. When the tension exceeds the set value, the sanitation agency is notified to clean up the garbage in the anti-falling net 5 and the upper blocking device 8;
[0054] S4: If there is too much garbage in the upper blocking device 8 and the rainfall is too heavy, the water level in the inspection well 1 will gradually rise. When the water level rises and the float plate 64 contacts the pressure sensor 62, the pressure sensor 62 generates a pressure signal when it is under pressure. The signal is sent to the system of the sanitation agency through the signal transmitter 63, notifying the staff to clean up the garbage in the upper blocking device 8.
[0055] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.
Claims
1. A municipal rainwater drainage system that is not easy to be blocked, comprising a vertically buried inspection well (1) and a sewage pipe (2) at a distance from the bottom of the inspection well (1), wherein the sewage pipe (2) is used for rainwater to flow into a river, and a wellhead (3) is fixed on the top of the inspection well (1), characterized in that: A lower blocking device (4) is provided at the bottom of the inspection well (1), and an upper blocking device (8) is provided inside the inspection well (1) at a position on the top of the lower blocking device (4). The upper end of the upper blocking device (8) is larger than the lower end of the upper blocking device (8), and the upper end of the lower blocking device (4) is larger than the lower end of the lower blocking device (4). The lower end of the upper blocking device (8) and the upper end of the lower blocking device (4) are coupled to each other. A cavity for water flow to pass through is formed between the upper blocking device (8) and the inspection well (1), and a cavity for water flow to pass through is formed at the connection between the lower blocking device (4), the inspection well (1) and the sewage pipe (2). When rainwater flows into the inspection well (1), the rainwater enters the sewage pipe (2) and is discharged into the river. The silt in the rainwater gathers in the lower blocking device (4), so that the silt will not be blocked at the junction of the sewage pipe (2) and the inspection well (1).
2. A non-clogging municipal rainwater drainage system according to claim 1, characterized in that: A plurality of limit blocks (41) are fixed around the top of the lower blocking device (4), the bottom of the upper blocking device (8) is in contact with the top of the lower blocking device (4), the bottom of the upper blocking device (8) is sleeved on the outside of the limit blocks (41), and the limit blocks (41) prevent the upper blocking device (8) from swaying under the impact of the water flow.
3. A non-clogging municipal rainwater drainage system according to claim 2, characterized in that: The anti-falling net (5) is detachably mounted on the top of the upper blocking device (8); the bottom of the anti-falling net (5) is inserted into the top of the upper blocking device (8); the anti-falling net (5) and the upper blocking device (8) are fixed to each other via fasteners; the anti-falling net (5) is movably arranged in the wellhead (3); a fixing device (7) for fixing the anti-falling net (5) is arranged on the top of the anti-falling net (5); and the fixing device (7) is arranged on the inner wall of the wellhead (3).
4. The non-clogging municipal rainwater drainage system according to claim 1, characterized in that: A vertically downward limiting groove (42) is provided at the top of the lower blocking device (4), and a plug-in component that cooperates with the limiting groove (42) is provided at the bottom of the upper blocking device (8). The plug-in component at the bottom of the upper blocking device (8) is inserted into the limiting groove (42) in the lower blocking device (4), and the limiting groove (42) and the plug-in component cooperate to prevent the upper blocking device (8) from shaking under the impact of the water flow.
5. The non-clogging municipal rainwater drainage system according to claim 1, characterized in that: The lower blocking device (4) is made of concrete, and the lower blocking device (4) and the inspection well (1) are fixed together with the inspection well (1) through the concrete.
6. The non-clogging municipal rainwater drainage system according to claim 1, characterized in that: The lower blocking device (4) is made of steel or metal, and the lower blocking device (4) is fixed inside the inspection well (1) by means of fasteners.
7. The non-clogging municipal rainwater drainage system according to claim 1, characterized in that: The surface of the upper blocking device (8) is provided with a plurality of through holes for water to flow through, the surface of the lower blocking device (4) is also provided with through holes for water to flow through, and the surface of the anti-falling net (5) is also provided with through holes for water to flow through.
8. The non-clogging municipal rainwater drainage system according to claim 3, characterized in that: The fixing device (7) includes a steel wire rope (73), one end of which is connected to the top of the anti-fall net (5), and the other end of which is connected to the hook (72). The fixing device (7) also includes a connector (71), and a tension sensor is prefabricated in the connector (71). The hook (72) is hung on the connector (71), and the connector (71) is fixed to the inner wall of the wellhead (3) by means of threads. When the anti-fall net ( When there is too much garbage in the anti-fall net (5) and the upper blocking device (8), the weight of the anti-fall net (5) and the upper blocking device (8) increases, and the anti-fall net (5) and the upper blocking device (8) apply tension to the hook (72) through the wire rope (73), and then the tension sensor in the connector (71) detects the tension of the anti-fall net (5) and the upper blocking device (8). When the tension exceeds a set value, the sanitation agency is notified to clean up the garbage in the anti-fall net (5) and the upper blocking device (8).
9. The non-clogging municipal rainwater drainage system according to claim 1, characterized in that: A water level detection device (6) is also installed near the top of the cavity between the inspection well (1) and the upper blocking device (8). The water level detection device (6) includes a protective shell (61) and a signal transmitter (63) installed in the protective shell (61). A pressure sensor (62) is connected to one side of the signal transmitter (63). When the pressure sensor (62) is subjected to pressure, a pressure signal is generated, and the signal is sent to the system of the sanitation agency through the signal transmitter (63). A floating plate (64) is also arranged in the protective shell (61). When the water level in the wellhead (3) rises, the floating plate (64) moves, and the floating plate (64) contacts the pressure sensor (62), so that the pressure sensor (62) generates a pressure signal. A support plate (65) is installed at the bottom of the protective shell (61). The support plate (65) is designed with an opening to allow water to pass through and enter the protective shell (61).
10. A method for draining municipal rainwater, comprising a non-clogging municipal rainwater drainage system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: After rainwater enters the inspection well (1) from the wellhead (3), the rainwater passes through the through holes in the lower blocking device (4), the anti-falling net (5) and the upper blocking device (8) and enters the cavity of the inspection well (1) and the upper blocking device (8), and the water flows from the sewage pipe (2) into the river; S2: Since there is garbage or silt in the water, when the water passes through the anti-fall net (5), the larger garbage is blocked, and the silt enters the upper blocking device (8) with the water and is collected. As time goes by, the silt in the upper blocking device (8) will gradually increase; S3: When there is too much garbage in the anti-falling net (5) and the upper blocking device (8), the weight of the anti-falling net (5) and the upper blocking device (8) increases, and the anti-falling net (5) and the upper blocking device (8) apply tension to the hook (72) through the wire rope (73), and then the tension sensor in the connector (71) detects the tension of the anti-falling net (5) and the upper blocking device (8). When the tension exceeds the set value, the sanitation agency is notified to clean up the garbage in the anti-falling net (5) and the upper blocking device (8); S4: If there is too much garbage in the upper blocking device (8) and the rainfall is too heavy, the water level in the inspection well (1) will gradually rise. When the water level rises and the floating plate (64) contacts the pressure sensor (62), the pressure sensor (62) is subjected to pressure and generates a pressure signal. The signal is sent to the system of the sanitation agency through the signal transmitter (63), notifying the staff to clean up the garbage in the upper blocking device (8).