An overflow decontamination system suitable for rainwater and sewage pipe outlets and its use method

Abstract

The present invention discloses an overflow decontamination system suitable for the outlet of a rainwater and sewage pipe and a method for using the system. The system comprises an overflow section unit, a flushing gate unit, a grille unit, and a baffle unit. The overflow section unit is intercepted and arranged at the flow section of the rainwater and sewage pipe culvert, so that the incoming water can only pass through the overflow section unit. A drain outlet is provided at the lower part of the overflow section unit, and the flushing gate unit is installed on the drain outlet. The flushing gate unit can control overflow discharge and prevent backflow, and can also flush the culvert. The grille unit is installed to cover the overflow outlet of the overflow section unit. The baffle unit is intercepted and installed at the upper rear of the grille unit, so that the incoming water can only overflow through the grille unit when it does not pass through the baffle unit. The present invention can reduce outlet overflow pollution and effectively solve the problem of treating pollutants intercepted at the outlet. Manual cleaning is not required, which greatly saves the operation and maintenance workload after the project is invested and constructed.

Description

Technical Field

[0001] The present invention relates to the technical field of rainwater and sewage treatment, and in particular to an overflow decontamination system suitable for a rainwater and sewage pipe outlet and a method of using the system. Background Art

[0002] In recent years, the treatment of black and odorous water bodies in my country's cities has been an important part of urban development work. It requires the adoption of reasonable and effective treatment methods to ensure that there are no large areas of floating pollutants on the surface of rivers and lakes, no garbage on the river banks, and no illegal direct sewage outlets, thereby eliminating black and odorous water bodies.

[0003] Overflows from combined sewer systems during rainfall, as well as initial rainwater and dry-run water from separate sewer systems, are major point sources of black and odorous water. Therefore, eliminating overflow pollution during the rainy season is a key measure for outlet management.

[0004] Current methods for removing rainy season overflow pollution from outlets, such as purpose-built on-site biochemical treatment facilities and sedimentation treatment facilities, have drawbacks such as large footprints, high costs, and complex operations and maintenance. In particular, on-site biochemical treatment equipment is not suitable for intermittent rainfall conditions, and its effectiveness is easily affected by the quality, frequency, and continuity of incoming water. Therefore, more cost-effective solutions should be considered.

[0005] Currently, relatively cost-effective and reasonable measures for decontamination of outfalls include constructing wells near the inlet pipes, installing decontamination equipment within these wells, and treating the incoming water during rainfall, thereby reducing the amount of garbage and solid pollutants entering rivers and lakes. Screens are a widely used type of decontamination device. While various types of screens exist, the treatment of pollutants intercepted by the screens remains a key focus of technical discussions.

[0006] Currently, there are two main methods for treating intercepted pollutants. The first method requires additional labor to handle the screens and maintain the equipment. The second method is to retain the screens in a well or pipe culvert. After the rainfall ends, the captured pollutants flow back into the interception pipe with the water flow and are discharged to the downstream sewage treatment plant, without the need for additional manual cleaning. However, there is a problem of insufficient water power, especially when the interception pipe is far from the outlet. The captured pollutants will accumulate in the pipe and cannot be discharged to the sewage treatment plant for treatment, thus preventing effective removal.

[0007] Fixed installation of the equipment generally requires extensive renovation of the existing outlet's civil engineering structure to ensure that its strength and dimensions meet the equipment's installation requirements. Therefore, renovation of existing outlet pipe box culverts presents significant construction challenges and requires extensive civil engineering work. Consequently, the equipment must be highly adaptable to the local environment, minimizing both the construction workload and the difficulty of construction. Summary of the Invention

[0008] In response to the problems existing in the above-mentioned prior art, the purpose of the present invention is to propose an overflow decontamination system suitable for the discharge outlet of rainwater and sewage pipes and a method of using the same, which can effectively remove pollutants intercepted in rainwater and sewage pipes without the need for manual cleaning.

[0009] The technical solution adopted by the present invention to solve its technical problem is:

[0010] An overflow sewage removal system suitable for the outlet of a rainwater and sewage pipe comprises: an overflow section unit, a flushing door unit, a grille unit and a baffle unit; the overflow section unit is intercepted and arranged at the flow section of the rainwater and sewage pipe culvert, so that the incoming water can only pass through the overflow section unit; a drain outlet is provided at the lower part of the overflow section unit, and the flushing door unit is installed on the drain outlet; the grille unit is covered and installed on the overflow outlet of the overflow section unit; the baffle unit is intercepted at the upper rear of the grille unit, and its bottom is connected to the grille unit, so that the incoming water can only overflow through the grille unit when it does not pass through the baffle unit.

[0011] According to a further preferred technical solution, the overflow section unit is constructed using flood control baffles or civil walls.

[0012] A further preferred technical solution is that the flood baffle includes a ground frame, a plate body and two side frames; the ground frame is fixed to the bottom surface of the rainwater and sewage pipe culvert and is sealed, the bottom of the plate body is fixed to the ground frame and is sealed, and its two side edges are respectively fixed to the side frames and are sealed, the side frames are respectively fixed to the walls on both sides, and the drain outlet is opened at the lower part of the plate body.

[0013] A further preferred technical solution is that the panel is constructed from a plurality of metal beams stacked and interlocked. The metal beams are hollow, with grooves at the top and protrusions at the bottom that fit into the grooves. A plurality of fastening plates are longitudinally provided on the panel to tightly connect all the metal beams. This panel adopts a detachable assembly structure, making it more convenient during installation and subsequent operation and maintenance compared to civil walls.

[0014] A further preferred technical solution is that the flushing door includes a door frame, a door body and a hydraulic drive mechanism, the door frame is installed on the drain outlet of the flood baffle and is sealed; the door body corresponds to the door frame, and the top of the door body is hinged to the top of the door frame, two hydraulic drive mechanisms are arranged in parallel, and one end of the hydraulic drive mechanism is connected to the overflow section unit above the door frame, and the other end is connected to the door body.

[0015] A further preferred technical solution is that the hydraulic drive mechanism includes a hydraulic drive arm, a cylinder fixing seat, a guide straight rod and a guide curved rod; the cylinder fixing seat is fixed on the overflow section unit above the door frame, the cylinder end of the hydraulic drive arm is hinged to the cylinder fixing seat, and its telescopic rod end is coaxially hinged to the guide straight rod and the guide curved rod respectively, the other end of the guide straight rod is hinged to the door body, and the other end of the guide curved rod is hinged to the rotating shaft of the door body.

[0016] A further preferred technical solution is that the grille unit adopts a flat grille, and its front edge is fixed to the top surface of the overflow section unit, and its rear edge is fixed to a supporting beam, and the two ends of the supporting beam are respectively fixed to the walls on both sides.

[0017] According to a further preferred technical solution, a grid frame is mounted on the grid unit, and an anti-clogging cleaning device is mounted on the grid frame.

[0018] A further preferred technical solution is that the anti-clogging cleaning device includes a bidirectional hydraulic drive rod, a brush slide rail and a brush assembly; the cylinder end of the bidirectional hydraulic drive rod is fixed to the top of the grille frame, the brush slide rail includes two, and is respectively fixed to the front edge and the rear edge of the flat grille, and the two telescopic rod ends of the bidirectional hydraulic drive rod are respectively connected to a brush assembly; the brush assembly includes several brushes, and the brushes are connected by a scissor link.

[0019] A method for using an overflow decontamination system suitable for a rainwater and sewage pipe outlet, the method comprising:

[0020] At the beginning of rainfall, when the water level in the pipe does not exceed the preset low water mark, the rainwater and sewage pipes are closed and the rainwater is directly discharged into the intercepting sewage pipe;

[0021] As the rainfall increases, when the water level in the pipe exceeds the preset low water level, the rainwater and sewage pipe is opened, and rainwater enters the rainwater and sewage pipe. When the water level in the pipe does not exceed the preset high water level, the flushing door unit is closed, and the rainwater overflows into the outer river channel after exceeding the grille unit, and the floating pollutants are intercepted at the bottom of the grille, and the anti-clogging cleaning device is activated to prevent the grille from being blocked.

[0022] When the water level in the rainwater and sewage pipe exceeds the preset high water mark and emergency flood discharge is required, the rainwater will pass over the baffle unit and overflow directly into the outer river channel. At the same time, the flushing gate unit will be opened to further increase the flow capacity and improve the safety of flood control and drainage. This step is also applicable to the sudden increase of rainwater caused by heavy rain.

[0023] When the rainfall decreases and the water level in the rainwater and sewage pipe drops below the preset high water level, the flushing gate is closed to prevent water from the external river from flowing back into the rainwater and sewage pipe;

[0024] When the water level in the rainwater and sewage pipe drops below the grid unit, the rainwater in the rainwater and sewage pipe will be drained into the intercepting sewage pipe;

[0025] When the water in the rainwater and sewage pipes is drained, the flushing function is started, and the flushing door unit opens quickly to pour the river water from the external river into the rainwater and sewage pipes to flush the rainwater and sewage pipes, and flush the pollutants in the rainwater and sewage pipes to the sewage interception pipes and the downstream sewage treatment plant. After the flushing is completed, the flushing door unit is closed.

[0026] The beneficial effects of the present invention are:

[0027] 1. Existing solutions require extensive renovations to the civil engineering structure of the outlet to ensure that its strength and dimensions meet the equipment requirements. This makes the renovations quite challenging. However, this solution, which utilizes flood barriers, can be modified within the existing pipe box culvert. Compared to existing technologies, this solution offers greater adaptability and saves more space.

[0028] 2. This solution can give full play to the convenience of integrated installation and use of equipment, reduce construction links, and reduce the cost.

[0029] 3. This solution can treat the overflow water quality of the drainage network, reduce the amount of garbage discharged into rivers and lakes, promote the elimination of black and odorous water bodies, and protect water quality.

[0030] 4. This solution creatively uses the water pressure of the external river to reversely flush the rainwater and sewage pipes, thereby ensuring the flushing water pressure, which can more effectively solve the problem of treating pollutants intercepted at the outlet, eliminating the need for manual cleaning and saving the operation and maintenance workload after the project is invested and constructed.

[0031] 5. This plan takes into account the fact that the outlet is close to the river and makes use of the water source from the external river as the flushing water source for the overflow pipe box culvert to prevent siltation and odor in the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a front view of the overall structure of the present invention.

[0033] Figure 2 It is a side view of the overall structure of the present invention.

[0034] Figure 3 It is a top view of the overall structure of the present invention.

[0035] Figure 4 This is a front view of the flood barrier.

[0036] Figure 5 It is a side view of the flood barrier.

[0037] Figure 6 This is an overhead view of the flood barrier.

[0038] Figure 7 is a front view of the flush door.

[0039] Figure 8 is a side view of the flush door.

[0040] Figure 9 It is a front view of the flat panel grille related structure.

[0041] Figure 10 It is a side view of the flat grid related structure.

[0042] Figure 11 It is a top view of the flat grid related structure.

[0043] Figure 12 It is a schematic diagram of the implementation structure of an anti-clogging cleaning device.

[0044] Figure 13 This is a schematic diagram of the state when the water level in the pipeline does not exceed the preset low water level line.

[0045] Figure 14 It is a schematic diagram of the state when rainwater enters the rainwater and sewage pipes and does not exceed the preset high water level line.

[0046] Figure 15 This is a schematic diagram of the situation when the water level in the rainwater and sewage pipes exceeds the preset high water level and emergency flood discharge is required.

[0047] Figure 16 This is a schematic diagram of the state when the water level in the rainwater and sewage pipe drops below the flat grid.

[0048] Figure 17 This is a schematic diagram of the status when the flushing function is activated after the water in the rainwater and sewage pipes is drained.

[0049] In the picture:

[0050] 1-flood baffle, 11-ground frame, 12-plate body, 13-side frame, 14-fastening connecting plate, 15-drainage outlet.

[0051] 2- flushing door unit, 21- door frame, 22- door body, 23- hydraulic drive mechanism; 231- oil cylinder fixing seat, 232- hydraulic drive arm, 233- guide curved rod, 234- guide straight rod.

[0052] 3-Flat grid, 4-Supporting beam, 5-Grid frame.

[0053] 6-anti-clogging cleaning device, 61-bidirectional hydraulic drive rod, 62-scrub brush assembly, 63-scrub brush slide rail, 621-scrub brush, 622-scissor connecting rod.

[0054] 7-Baffle unit. DETAILED DESCRIPTION

[0055] The present invention will be further described below with reference to the accompanying drawings.

[0056] Example 1:

[0057] The present invention discloses an overflow decontamination system suitable for the outlet of rainwater and sewage pipes, such as Figure 1-3 As shown: the overflow sewage removal system is suitable for installation at the drainage outlet of the rainwater and sewage pipes and the external river channel, and its main structure includes: a flood control baffle 1, a flushing door unit 2, a flat grille 3 and a baffle unit 7.

[0058] The flood baffle 1 is longitudinally mounted at the flow section of the rainwater and sewage pipe box culvert, so that incoming water can only pass through the flood baffle 1. In addition, a drain port 15 is provided on the flood baffle 1; the flushing door unit 2 is mounted on the drain port 15.

[0059] The flat grid 3 is horizontally installed to cover the overflow outlet of the flood baffle 1 .

[0060] The baffle unit 7 is intercepted and installed on the upper rear of the flat grille 3 , and its bottom is connected to the flat grille 3 , so that the incoming water can only overflow through the flat grille 3 when it does not exceed the baffle unit 7 .

[0061] The following is a detailed explanation of the various structures of this solution with reference to the accompanying drawings:

[0062] like Figure 4-6 As shown, the flood baffle 1 includes a ground frame 11, a plate body 12 and two side frames 13; the ground frame 11 is fixed to the bottom surface of the rainwater and sewage pipe box culvert and is sealed, the bottom of the plate body 12 is fixed to the ground frame 11 and is sealed, and its two side edges are respectively fixed in the side frames 13 and are sealed, and the side frames 13 are respectively fixed to the walls on both sides, and the drain outlet 15 is opened in the middle and lower part of the plate body 12.

[0063] Furthermore, the panel 12 is constructed from a stack of interlocking metal beams. These beams are hollow, with grooves at their tops and protrusions at their bottoms that mate with the grooves. Several fastening plates 14 are longitudinally mounted on the panel 12, tightly connecting all the metal beams together. The panel 14 utilizes a detachable assembly structure, making installation and subsequent maintenance more convenient than traditional civil walls.

[0064] like Figure 7-8As shown, the flushing door unit 2 includes a door frame 21, a door body 22, and a hydraulic drive mechanism 23. The door frame 21 is mounted on the drain outlet 15, the door body 22 corresponds to the door frame 21, and the top of the door body 22 is hinged to the top of the door frame 21. Two hydraulic drive mechanisms 23 are arranged in parallel, and one end of the hydraulic drive mechanism 23 is connected to the flood baffle 1 above the door frame 21, and the other end is connected to the door body 22.

[0065] The hydraulic drive mechanism 23 comprises a hydraulic drive arm 232, a cylinder mount 231, a guide rod 234, and a guide curved rod 233. The cylinder mount 231 is fixed to the flood control baffle 1 above the door frame 21. The cylinder end of the hydraulic drive arm 232 is hinged to the cylinder mount 231, and its telescopic rod end is coaxially hinged to the guide rod 234 and guide curved rod 233, respectively. The other end of the guide rod 234 is hinged to the door body 22, and the other end of the guide curved rod 233 is hinged to the rotating shaft of the door body 22. When the hydraulic drive arm 232 retracts, the flush door 2 opens; when the hydraulic drive arm 232 extends, the flush door 2 closes.

[0066] like Figure 9-11 As shown, the front end of the flat grid 3 is fixedly connected to the top edge of the flood baffle 1, and the rear end is fixed to a supporting beam 4, and the two ends of the supporting beam 4 are respectively fixed to the walls on both sides.

[0067] In addition, a grid frame 5 is installed on the flat grid 3, and an anti-clogging cleaning device 6 is installed on the grid frame 5. Baffles 7 are provided on the back and both sides of the grid frame 5 to prevent incoming water from directly passing over the flat grid 3.

[0068] Among them, a specific implementation structure of the anti-clogging cleaning device 6 is as follows Figure 12 As shown, it includes a bidirectional hydraulic drive rod 61, a scrub brush slide 63, and a scrub brush assembly 62. The cylinder end of the bidirectional hydraulic drive rod 61 is fixed to the top of the grille frame 5. There are two scrub brush slides 63, which are fixed to the front and rear edges of the flat grille 3. The two telescopic rod ends of the bidirectional hydraulic drive rod 61 are each connected to a scrub brush assembly 62; the scrub brush assembly 62 includes a plurality of scrub brushes 621, which are connected by a scissor link 622.

[0069] The specific method of using the overflow decontamination system of the present invention is as follows:

[0070] At the beginning of rainfall, when the water level in the pipe does not exceed the preset low water level line, the rainwater and sewage pipes are closed, and the rainwater is directly discharged into the sewage interception pipe. The overflow decontamination process equipment at the outlet does not work. Figure 13 shown.

[0071] As the rainfall increases, when the water level in the pipe exceeds the preset low water level, the rainwater pipe opens and rainwater enters the rainwater pipe. When the water level in the pipe does not exceed the preset high water level (the horizontal line of the top of the baffle unit), the flushing door unit 2 closes, and the rainwater overflows into the outer river channel after exceeding the flat grid 3, and the floating pollutants are intercepted at the bottom of the flat grid 3, and the anti-clogging cleaning device 6 is activated to prevent the grid from being blocked. Figure 14 shown.

[0072] like Figure 15 As shown, when the water level in the rainwater and sewage pipe exceeds the preset high water mark (the horizontal line at the top of the baffle unit) and an emergency flood discharge is required, the rainwater will flow over the baffle unit 7 and directly overflow into the outer river channel. At the same time, the flushing gate unit 2 will be opened to further increase the flow capacity and improve the safety of flood control and drainage. This step is also applicable to the sudden increase of rainwater caused by heavy rain.

[0073] When the rainfall decreases and the water level in the stormwater and sewage pipes drops below the preset high water level, the flushing gate is closed to prevent water from the external river from flowing back into the stormwater and sewage pipes.

[0074] like Figure 16 As shown, when the water level in the rainwater and sewage pipe drops below the flat grid 3, the rainwater in the rainwater and sewage pipe will be drained into the sewage interception pipe; but due to the low drainage water pressure, the pollutants in the remaining rainwater will be deposited in the pipe and cannot flow back to the sewage interception pipe with the rainwater.

[0075] like Figure 17 As shown, after the incoming water in the rainwater and sewage pipes is drained, the flushing function is started, and the flushing door unit 2 is quickly opened to pour the river water from the external river into the rainwater and sewage pipes to flush the rainwater and sewage pipes, and flush the pollutants in the rainwater and sewage pipes to the sewage interception pipes and the downstream sewage treatment plant. After the flushing is completed, the flushing door unit 2 is closed.

[0076] Example 2:

[0077] Another possible implementation of this scheme is to replace the flood barrier 1 with a civil wall, create a drain outlet on the civil wall, and install the flushing door unit 2 on the drain outlet of the civil wall. Although this solution can effectively remove pollutants trapped in the rainwater and sewage pipes without manual cleaning, it is not the best solution recommended by the inventors due to the complex civil construction, high construction difficulty, and higher cost.

[0078] The above shows and describes the basic principles, main features, and advantages of this solution. Those skilled in the art should understand that this solution is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of this solution. Various changes and improvements may be made to this solution without departing from the spirit and scope of this solution. Such changes and improvements are intended to fall within the scope of the solution for which protection is sought. The scope of protection claimed by this solution is defined by the appended claims and their equivalents.

Claims

1. A method for using an overflow decontamination system suitable for a rainwater and sewage pipe outlet, characterized in that: The overflow decontamination system comprises: an overflow section unit, a flushing door unit, a grille unit and a baffle unit; the overflow section unit is intercepted and arranged at the flow section of the rainwater and sewage pipe box culvert, so that the incoming water can only pass through the overflow section unit; a drain outlet is provided at the lower part of the overflow section unit, and the flushing door unit is installed on the drain outlet; the grille unit is installed to cover the overflow outlet of the overflow section unit; the baffle unit is intercepted at the upper rear of the grille unit, and its bottom is connected to the grille unit, so that the incoming water can only overflow through the grille unit when it does not pass through the baffle unit; the method for using the overflow decontamination system comprises the following steps: S1. At the beginning of rainfall, when the water level in the pipe does not exceed the preset low water level, the rainwater and sewage pipes are closed and the rainwater is directly discharged into the sewage interception pipe; S2. As rainfall increases, when the water level in the pipe exceeds the preset low water mark, the rainwater and sewage pipe is opened, and rainwater enters the rainwater and sewage pipe. When the water level in the pipe does not exceed the preset high water mark, the flushing door unit is closed, and rainwater overflows into the outer river channel after exceeding the grille unit, intercepting floating pollutants at the bottom of the grille, and activating the anti-clogging cleaning device to prevent the grille from clogging; S3. When the water level in the rainwater and sewage pipe exceeds the preset high water mark and emergency flood discharge is required, the rainwater will flow over the baffle unit and directly overflow into the outer river channel. At the same time, the flushing gate unit will be opened to further increase the flow capacity and improve the safety of flood control and drainage; S4. When the rainfall decreases and the water level in the rainwater and sewage pipe drops below the preset high water mark, the flushing gate is closed to prevent the water from the outer river from flowing back into the rainwater and sewage pipe. The rainwater continues to overflow into the outer river through the grille unit; S5. When the water level in the rainwater and sewage pipe drops below the grid unit, the rainwater in the rainwater and sewage pipe will be drained into the intercepting sewage pipe; S6. After the water in the rainwater and sewage pipes is drained, the flushing function is started, and the flushing door unit is quickly opened to pour the river water from the external river into the rainwater and sewage pipes to flush the rainwater and sewage pipes, and flush the pollutants in the rainwater and sewage pipes to the sewage interception pipes and the downstream sewage treatment plant. After the flushing is completed, the flushing door unit is closed.

2. The method for using the overflow decontamination system for the outlet of a rainwater and sewage pipe according to claim 1, characterized in that: The overflow section unit is constructed by using flood control baffles or civil engineering walls.

3. The method for using the overflow decontamination system for the outlet of a rainwater and sewage pipe according to claim 2, characterized in that: The flood baffle includes a ground frame, a plate body and two side frames; the ground frame is fixed to the bottom surface of the rainwater and sewage pipe box culvert and is sealed, the bottom of the plate body is fixed to the ground frame and is sealed, and its two side edges are respectively fixed to the side frames and are sealed, and the side frames are respectively fixed to the walls on both sides, and the drain outlet is opened at the lower part of the plate body.

4. The method for using the overflow decontamination system for the outlet of a rainwater and sewage pipe according to claim 3, characterized in that: The plate body is formed by stacking a number of metal beams that are interlocked with each other up and down. The metal beams are hollow inside, with a groove on the top and a protrusion on the bottom that cooperates with the groove. A number of fastening connecting plates are longitudinally provided on the plate body, and the fastening connecting plates tightly connect all the metal beams together.

5. The method for using the overflow decontamination system for the outlet of a rainwater and sewage pipe according to claim 3, characterized in that: The flushing door includes a door frame, a door body and a hydraulic drive mechanism. The door frame is installed on the drain outlet of the flood baffle and is sealed; the door body corresponds to the door frame, and the top of the door body is hinged to the top of the door frame. Two hydraulic drive mechanisms are arranged in parallel, and one end of the hydraulic drive mechanism is connected to the overflow section unit above the door frame, and the other end is connected to the door body.

6. A method for using an overflow decontamination system suitable for a rainwater and sewage pipe outlet as claimed in claim 5, characterized in that: The hydraulic drive mechanism includes a hydraulic drive arm, a cylinder fixing seat, a guide straight rod and a guide curved rod; the cylinder fixing seat is fixed on the overflow section unit above the door frame, the cylinder end of the hydraulic drive arm is hinged to the cylinder fixing seat, and its telescopic rod end is coaxially hinged to the guide straight rod and the guide curved rod respectively, the other end of the guide straight rod is hinged to the door body, and the other end of the guide curved rod is hinged to the rotating shaft of the door body.

7. The method for using the overflow decontamination system for the outlet of a rainwater and sewage pipe according to claim 1, characterized in that: The grid unit adopts a flat grid, and its front edge is fixed on the top surface of the overflow section unit, and its rear edge is fixed on a supporting beam. The two ends of the supporting beam are respectively fixed on the walls on both sides.

8. The method for using the overflow decontamination system for the outlet of a rainwater and sewage pipe according to claim 7, characterized in that: The grid unit is provided with a grid frame, and the grid frame is provided with an anti-clogging cleaning device.

9. A method for using an overflow decontamination system for a rainwater and sewage pipe outlet as claimed in claim 8, characterized in that: The anti-clogging cleaning device includes a bidirectional hydraulic drive rod, a brush slide rail and a brush assembly; the cylinder end of the bidirectional hydraulic drive rod is fixed to the top of the grille frame, the brush slide rail includes two, and is respectively fixed to the front edge and the rear edge of the flat grille, and the two telescopic rod ends of the bidirectional hydraulic drive rod are respectively connected to a brush assembly; the brush assembly includes several brushes, and the brushes are connected by a scissor link.

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