Urban anti-waterlogging water network structure capable of rapidly draining water and preventing backflow

By installing flood-proof supports and flood-proof water pipes on the drainage pipes, and utilizing floating plates and an air pressure regulation system, the opening and closing state of the flood-proof water pipes can be automatically adjusted, solving the backflow problem caused by the drainage volume exceeding the load in existing technologies, and achieving the effects of rapid drainage and backflow prevention.

CN223907624UActive Publication Date: 2026-02-13ZHENGZHOU UNIV
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Patent Information

Application Number
CN202520506584.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-02-13
Estimated Expiration
2035-03-21

AI Technical Summary

Technical Problem

The existing urban flood control network structure is prone to exceeding the drainage capacity of the drainage pipe network when encountering heavy rainfall, resulting in overflow and backflow. Its simple structure makes it inconvenient to adjust flood control according to the city's drainage volume.

Method used

Install flood-proof supports and flood-proof water pipes on the drainage pipes. Utilize floating plates, traction lines, and air pressure regulation systems. Through the cooperation of flexible baffles and top rods, automatically adjust the opening and closing state of the flood-proof water pipes to achieve rapid drainage and backflow prevention according to changes in drainage volume.

Benefits of technology

It improves urban drainage efficiency, prevents backflow, maintains the sealing and stability of the drainage system, and avoids blockages when the system is not in operation for extended periods.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an urban anti-waterlogging water net structure capable of rapidly draining water and preventing backflow, and relates to the technical field of anti-waterlogging water nets, the urban anti-waterlogging water net structure comprises an anti-waterlogging water pipe, the water inlet end of the anti-waterlogging water pipe is fixedly provided with a dustproof and protective water filter net, and one side of the water filter net is provided with a flexible blocking piece for sealing the water filter net. And a pull wire for pulling the flexible separation blade is fixedly mounted in the flexible separation blade. The anti-waterlogging device has the advantages that the anti-waterlogging water pipe is arranged above the drainage pipe network of the city, the inlet end of the anti-waterlogging water pipe and the inlet end of the drainage pipe network are arranged in the same range, and the inlet end of the anti-waterlogging water pipe is provided with the flexible blocking piece for sealing and protecting the anti-waterlogging water pipe; a floating piece and an extrusion floating plate which are arranged in the drainage pipe network are utilized to drive a flexible blocking piece and an ejector rod to deform and move through a pull wire and air pressure adjustment according to water flow power and buoyancy of drainage, then the working state of the waterlogging prevention water pipe is adjusted according to the water amount of the drainage, and the load amount of the drainage can be effectively increased.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a waterlogging prevention water net technical field, especially in a kind of quick drainage waterlogging prevention water net structure of city. BACKGROUND

[0002] City drainage is the drainage mode that city drainage system collects, transports, processes and discharges city sewage and rainwater, and drainage system is important infrastructure of modern city. Heavy rainfall is easy to cause rainwater reverse flow overflow in drainage pipe network to form waterlogging, so it needs to construct city waterlogging prevention water net in the process of constructing city drainage system. City waterlogging prevention water net is mainly structured by source reduction system, pipe network discharge system, storage and discharge system and over-standard emergency system, emphasizes quick drainage and prevents reverse flow, mainly to effectively deal with city waterlogging problem, protect the safety and stability of city.

[0003] But the existing city waterlogging prevention water net structure is usually simple structure, inconvenient to adjust waterlogging according to city drainage capacity, and drainage capacity is easy to exceed the load of drainage pipe network when encountering heavy rainfall, to cause overflow and reverse flow. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of quick drainage waterlogging prevention water net structure of city to solve the problems mentioned in the background art and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a kind of quick drainage waterlogging prevention water net structure of city in one aspect of embodiment, including the drainage pipe that carries out daily drainage, the surface of drainage pipe is fixedly installed with the waterlogging prevention support that carries out support fixation, the inside of waterlogging prevention support is fixedly installed with waterlogging prevention water pipe, the water inlet end of waterlogging prevention water pipe is fixedly installed with the dustproof filter water net, one side of filter water net is provided with the flexible baffle that is closed to it, the inside of flexible baffle is fixedly installed with the traction line that is pulled to it, one end of traction line is fixedly installed with the floating piece that bears pressure, one end of flexible baffle is fixedly installed with the stainless steel sheet that is guided to it, one side of stainless steel sheet is provided with the magnet piece that is adsorbed to it, one side of magnet piece is provided with the top rod that is pushed, one side of top rod is provided with the air cavity that is adjusted in air pressure, the inside of air cavity is provided with the extrusion floating plate that bears buoyancy.

[0006] It is preferred that one end of the drainage pipe is provided with a boss for accommodating the traction line, the inside of the drainage pipe is provided with a guide slot hole adapted to the traction line and the extrusion floating plate, the guide slot hole penetrates the drainage pipe, the waterlogging prevention support and the waterlogging prevention water pipe and communicates with the air cavity, and the waterlogging prevention support is sealingly connected with the drainage pipe and the waterlogging prevention water pipe.

[0007] The protrusion at one end of the drain pipe is used for accommodating the traction line, avoiding the traction line from being disturbed during the drainage process, the guide slot hole in the interior is matched with the traction line and the extruded floating plate, providing a moving path for the same, and the through drain pipe, waterlogging prevention support and waterlogging prevention pipe are communicated with the air cavity, ensuring the connection and cooperative work between the components, the waterlogging prevention support is sealingly connected with the drain pipe and the waterlogging prevention pipe, which not only plays a supporting and fixing role, but also prevents water leakage at the connection, ensuring the sealing and stability of the drainage system.

[0008] Preferably, according to any one of the above solutions, the waterlogging prevention pipe is located above the drain pipe, and the waterlogging prevention pipe is provided with a fixed slot accommodating the magnet piece at both ends, and the waterlogging prevention pipe is provided with a suspension table at the top end for supporting.

[0009] The fixed slots at both ends of the waterlogging prevention pipe are used for installing the magnet pieces, providing a basis for the action of the subsequent ejector rod, and the suspension table at the top end is used for installing the suspension rope of the flexible baffle, so that the flexible baffle can stably close the water inlet end of the waterlogging prevention pipe and be flexibly opened when needed, realizing the opening and closing control of the waterlogging prevention pipe and effectively dealing with different drainage conditions.

[0010] Preferably, according to any one of the above solutions, the flexible baffle comprises a suspension rope made of elastic material and an extended waterproof piece made of flexible material, the suspension rope is fixedly installed at the bottom of the suspension table, and the bottom of the suspension rope is fixedly installed with the extended waterproof piece fixed with the waterlogging prevention pipe.

[0011] The suspension rope is fixed at the bottom of the suspension table, providing suspension support for the extended waterproof piece, and the extended waterproof piece is fixed with the waterlogging prevention pipe, which can close the water inlet end of the waterlogging prevention pipe under normal circumstances to prevent dust from entering and causing blockage, and when the traction line is pulled, the extended waterproof piece can change state to open the water inlet end of the waterlogging prevention pipe, realizing the drainage function, and the flexible structure can adapt to different working state requirements.

[0012] Preferably, according to any one of the above solutions, the traction line is fixedly installed in the interior of the extended waterproof piece, the diameter of the floating piece is the same as the inner diameter of the drain pipe, the floating piece is provided in a semicircular structure, and the floating piece is located in the interior of the drain pipe.

[0013] The traction line is fixed in the interior of the extended waterproof piece, transmitting the movement of the floating piece to the flexible baffle, and the floating piece is located in the interior of the drain pipe, which can fully utilize the pressure of the water flow, when the drainage volume increases, the water flow pushes the floating piece to move, and through the traction line, the flexible baffle is pulled to open the water inlet end of the waterlogging prevention pipe, increasing the drainage passage and improving the drainage efficiency.

[0014] Preferably, according to any one of the above solutions, the stainless steel piece is fixedly installed at one end of the extended waterproof piece, and the magnet piece is fixedly installed in the interior of the waterlogging prevention pipe.

[0015] The technical scheme has the advantages that when the flexible baffle is closed to the water inlet end of the waterlogging-prevention pipe, the stainless steel sheet is adsorbed by the magnet sheet, and the stability of the closure is enhanced; when the waterlogging-prevention pipe needs to be opened, external force overcomes the magnetic force to separate the stainless steel sheet from the magnet sheet, so that the flexible baffle can be smoothly opened, and the opening and closing control of the waterlogging-prevention pipe is realized.

[0016] Preferably, the top rod comprises an elastic extrusion spring and an extrusion rod for pushing, the extrusion spring is fixedly installed in the interior of the waterlogging-prevention pipe, one end of the extrusion spring is fixedly installed with the extrusion rod which moves in the interior of the waterlogging-prevention pipe, the air cavity is arranged in the interior of the waterlogging-prevention pipe, and the extrusion floating plate is movably connected to the interior of the drain pipe.

[0017] The technical scheme has the advantages that when the flexible baffle is closed to the water inlet end of the waterlogging-prevention pipe, the stainless steel sheet is adsorbed by the magnet sheet, and the stability of the closure is enhanced; when the waterlogging-prevention pipe needs to be opened, external force overcomes the magnetic force to separate the stainless steel sheet from the magnet sheet, so that the flexible baffle can be smoothly opened, and the opening and closing control of the waterlogging-prevention pipe is realized.

[0018] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0019] 1. The waterlogging-prevention pipe is arranged above the drain pipe network in the city, the inlet end of the waterlogging-prevention pipe and the inlet end of the drain pipe network are arranged in the same range, the flexible baffle is arranged on the inlet end of the waterlogging-prevention pipe to close and protect the waterlogging-prevention pipe, the floating sheet and the extrusion floating plate arranged in the interior of the drain pipe network drive the flexible baffle and the top rod to deform and move through the traction line and the air pressure adjustment according to the water flow force and the buoyancy of the drainage, and the working state of the waterlogging-prevention pipe is adjusted according to the water volume in the interior of the drain pipe network, so that the waterlogging-prevention pipe can be effectively protected and the load capacity of the drainage can be increased, and the efficiency of the city drainage is improved.

[0020] 2. The protection state of the waterlogging-prevention pipe is adjusted according to the structure of the flexible baffle and the change of the drainage volume, the waterlogging-prevention pipe can be closed and protected when the water volume is low, the flexible baffle can avoid being blocked by dust during a long period of non-working, and the stability of the waterlogging-prevention network is ensured.

[0021] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0023] Figure 1 is a structural schematic diagram according to an embodiment of the present utility model;

[0024] Figure 2 is an exploded structural schematic diagram according to an embodiment of the present utility model;

[0025] Figure 3 is an exploded fracture structural schematic diagram according to an embodiment of the present utility model;

[0026] Figure 4 is a cross-sectional structural schematic diagram of a drain pipe according to an embodiment of the present utility model;

[0027] Wherein: 1-drain pipe, 2-flood control support, 3-flood control water pipe, 4-water filter net, 5-flexible baffle, 51-hanging rope, 52-extending waterproof sheet, 6-pulling line, 7-floating sheet, 8-stainless steel sheet, 9-magnet sheet, 10-jack, 101-squeezing spring, 102-squeezing rod, 11-air cavity, 12-squeezing floating plate. DETAILED DESCRIPTION

[0028] The present utility model will be further described in conjunction with the drawings, but the protection scope of the present utility model is not limited to the following.

[0029] As Figures 1-4 shown, the utility model embodiment's one kind is prevented to flood control water net structure of quick drainage of city of backflow of the city of the present utility model, including the drain pipe 1 of daily drainage, the surface fixed mounting of drain pipe 1 has the flood control support 2 of supporting fixedly, the inside fixed mounting of flood control support 2 has the flood control water pipe 3, the water inlet end fixed mounting of flood control water pipe 3 has the dustproof filter water net 4 of protection, the one side of filter water net 4 is provided with the flexible baffle 5 that is closed to it, the inside fixed mounting of flexible baffle 5 has the pulling line 6 that is pulled to it, one end of pulling line 6 is fixedly installed with the floating sheet 7 that bears pressure, one end of flexible baffle 5 is fixedly installed with the stainless steel sheet 8 that is guided to it, one side of stainless steel sheet 8 is provided with the magnet sheet 9 that is adsorbed to it, one side of magnet sheet 9 is provided with the jack 10 that is pushed, one side of jack 10 is provided with the air cavity 11 that is adjusted to air pressure, the inside of air cavity 11 is provided with the squeezing floating plate 12 that bears buoyancy.

[0030] It is preferred from the above any scheme that one end of drain pipe 1 is provided with boss that contains pulling line 6, the inside of drain pipe 1 is provided with guide slot hole that is adapted to pulling line 6 and squeezing floating plate 12, guide slot hole is communicated with air cavity 11 and passes through drain pipe 1, flood control support 2 and flood control water pipe 3, flood control support 2 is sealedly connected with drain pipe 1 and flood control water pipe 3.

[0031] The protrusion at one end of the drain pipe 1 is used to accommodate the traction line 6, avoiding the interference of the traction line 6 during the drainage process, the internal guide slot hole is matched with the traction line 6 and the extruded floating plate 12, providing a moving path for them, and the through drain pipe 1, the waterlogging prevention support 2 and the waterlogging prevention pipe 3 are communicated with the air cavity 11, ensuring the connection and cooperative work between the components, the waterlogging prevention support 2 is sealingly connected with the drain pipe 1 and the waterlogging prevention pipe 3, which not only plays a supporting and fixing role, but also prevents water leakage at the connection, ensuring the sealing and stability of the drainage system.

[0032] Preferably, according to any of the above solutions, the waterlogging prevention pipe 3 is located above the drain pipe 1, the two ends of the waterlogging prevention pipe 3 are provided with fixed grooves for accommodating the magnet pieces 9, and the top end of the waterlogging prevention pipe 3 is provided with a hanging table for supporting.

[0033] The fixed grooves at the two ends of the waterlogging prevention pipe 3 are used to install the magnet pieces 9, providing a basis for the action of the subsequent ejector rod 10, and the hanging table at the top end is used to install the hanging rope 51 of the flexible baffle 5, so that the flexible baffle 5 can stably close the water inlet end of the waterlogging prevention pipe 3 and be flexibly opened when needed, realizing the opening and closing control of the waterlogging prevention pipe 3 and effectively dealing with different drainage conditions.

[0034] Preferably, according to any of the above solutions, the flexible baffle 5 includes a hanging rope 51 made of elastic material and an extended waterproof piece 52 made of flexible material, the hanging rope 51 is fixedly installed at the bottom of the hanging table, and the bottom of the hanging rope 51 is fixedly installed with the extended waterproof piece 52 fixed with the waterlogging prevention pipe 3.

[0035] The hanging rope 51 is fixed at the bottom of the hanging table, providing suspension support for the extended waterproof piece 52, and the extended waterproof piece 52 is fixed with the waterlogging prevention pipe 3 and can close the water inlet end of the waterlogging prevention pipe 3 under normal circumstances to prevent dust from entering and causing blockage, and when the traction line 6 is pulled, the extended waterproof piece 52 can change state to open the water inlet end of the waterlogging prevention pipe 3, realizing the drainage function, and its flexible structure can adapt to different working state requirements.

[0036] Preferably, according to any of the above solutions, the traction line 6 is fixedly installed in the inside of the extended waterproof piece 52, the diameter of the floating piece 7 is the same as the inner diameter of the drain pipe 1, the floating piece 7 is provided in a semicircular structure, and the floating piece 7 is located inside the drain pipe 1.

[0037] The traction line 6 is fixed in the inside of the extended waterproof piece 52, transmitting the movement of the floating piece 7 to the flexible baffle 5, and the floating piece 7 is inside the drain pipe 1, which can fully utilize the pressure of the water flow, when the drainage volume increases, the water flow pushes the floating piece 7 to move, through the traction line 6, the flexible baffle 5 is pulled to open the water inlet end of the waterlogging prevention pipe 3, increasing the drainage channel and improving the drainage efficiency.

[0038] Preferably, the stainless steel sheet 8 is fixedly installed at one end of the extending water blocking sheet 52, and the magnet sheet 9 is fixedly installed inside the waterlogging prevention pipe 3.

[0039] The above technical solution has the following advantages: when the flexible blocking sheet 5 closes the water inlet end of the waterlogging prevention pipe 3, the stainless steel sheet 8 is attracted by the magnet sheet 9, thereby enhancing the stability of the closure; when it is necessary to open the waterlogging prevention pipe 3, external force overcomes the magnetic force, so that the stainless steel sheet 8 is separated from the magnet sheet 9, thereby ensuring that the flexible blocking sheet 5 can be smoothly opened, and realizing the opening and closing control of the waterlogging prevention pipe 3.

[0040] Preferably, the top rod 10 comprises an elastic extrusion spring 101 and an extrusion rod 102 for pushing, the extrusion spring 101 is fixedly installed inside the waterlogging prevention pipe 3, one end of the extrusion spring 101 is fixedly installed with the extrusion rod 102 which is movable inside the waterlogging prevention pipe 3, the air cavity 11 is arranged inside the waterlogging prevention pipe 3, and the extrusion floating plate 12 is movably connected to the inside of the drain pipe 1.

[0041] The above technical solution has the following advantages: when the extrusion floating plate 12 enters the air cavity 11 along with the water level rising inside the drain pipe 1, the extrusion floating plate 12 extrudes the air inside the air cavity 11, so that the air pressure is increased, the extrusion rod 102 is pushed, and the flexible blocking sheet 5 is further assisted to be opened; meanwhile, when the water level drops, the extrusion spring 101 can reset the extrusion rod 102, thereby realizing the cyclic work of the top rod 10, and guaranteeing that the waterlogging prevention pipe 3 is automatically adjusted in the opening and closing state according to the amount of water drainage.

[0042] All the structures are waterproof and corrosion-proof, and meet the requirement of long-term use.

[0043] The working principle of the urban waterlogging prevention network structure for quickly draining water and preventing backflow is as follows:

[0044] In normal drainage, the drain pipe 1 undertakes daily drainage task, the waterlogging prevention pipe 3 is located above the drain pipe 1, the filter screen 4 at the water inlet end of the waterlogging prevention pipe 3 can block impurities, the flexible baffle 5 is closed under the action of the suspension rope 51 and the stretched waterproof sheet 52, prevents dust accumulation from causing blockage, the stainless steel sheet 8 is adsorbed by the magnet sheet 9, maintains the closed state, when encountering heavy rainfall, the water quantity in the drain pipe 1 increases, the water flow pushes the semicircular floating sheet 7 to rise, the traction line 6 is pulled, the traction line 6 is connected inside the stretched waterproof sheet 52, and the flexible baffle 5 is driven to open, the waterlogging prevention pipe 3 starts to assist drainage, simultaneously, with the water level rising, the extrusion floating plate 12 enters the air cavity 11, extrudes the air in the air cavity 11, the increased air pressure drives the extrusion rod 102 of the top rod 10, further assists the flexible baffle 5 to open, when the drainage quantity reduces, the water level drops, the floating sheet 7 and the extrusion floating plate 12 fall back, the extrusion spring 101 resets the extrusion rod 102, the flexible baffle 5 re-closes the water inlet end of the waterlogging prevention pipe 3 under the adsorption of the magnet sheet 9 to the stainless steel sheet 8, realizes the automatic adjustment of the working state of the waterlogging prevention pipe 3 according to the urban drainage quantity, effectively improves the urban drainage efficiency, and prevents backflow.

[0045] Compared with the prior art, the utility model has the following beneficial effects relative to the prior art:

[0046] 1、In the city, the waterlogging prevention pipe 3 is arranged above the drain pipe network, the entering end of the waterlogging prevention pipe 3 and the entering end of the drain pipe network are arranged in the same range, the flexible baffle 5 for closing and protecting the entering end of the waterlogging prevention pipe 3 is arranged, the floating sheet 7 and the extrusion floating plate 12 arranged in the drain pipe network drive the flexible baffle 5 and the top rod 10 to deform and move through the traction line 6 and air pressure adjustment according to the water flow power and buoyancy of drainage, and then the working state of the waterlogging prevention pipe 3 is adjusted according to the water quantity in the drain pipe network, so that the waterlogging prevention pipe 3 can be effectively protected and the load capacity of drainage can be increased, and the efficiency of urban drainage is improved.

[0047] 2、The protection state of the waterlogging prevention pipe 3 is adjusted by the structure of the flexible baffle 5 and the change of the drainage quantity, the waterlogging prevention pipe 3 can be closed and protected when the water quantity is low, dust accumulation in the waterlogging prevention pipe 3 during a long period of non-working is avoided, and the stability of the waterlogging prevention pipe network is ensured.

Claims

1. A quick-draining anti-backflow urban waterlogging-prevention water network structure, comprising a drainage pipe (1) for daily drainage, the surface of the drainage pipe (1) being fixedly installed with a waterlogging-prevention support (2) for supporting and fixing, characterized in that: The inside of the anti-flood support (2) is fixedly installed with an anti-flood water pipe (3), the water inlet end of the anti-flood water pipe (3) is fixedly installed with a dustproof water filter net (4), one side of the water filter net (4) is provided with a flexible baffle (5) for closing it, the inside of the flexible baffle (5) is fixedly installed with a traction line (6) for pulling it, one end of the traction line (6) is fixedly installed with a pressure-bearing floating piece (7), one end of the flexible baffle (5) is fixedly installed with a stainless steel piece (8) for guiding it, one side of the stainless steel piece (8) is provided with a magnet piece (9) for adsorbing it, one side of the magnet piece (9) is provided with a top rod (10) for pushing, one side of the top rod (10) is provided with an air cavity (11) for air pressure adjustment, the inside of the air cavity (11) is provided with an extrusion floating plate (12) for bearing buoyancy.

2. The urban waterlogging-preventing water network structure of quick drainage and reverse flow prevention according to claim 1, characterized in that: One end of the drain pipe (1) is provided with a boss for containing the traction line (6), the inside of the drain pipe (1) is provided with a guide groove hole matched with the traction line (6) and the extrusion floating plate (12), the guide groove hole penetrates the drain pipe (1), the anti-flood support (2) and the anti-flood water pipe (3) and communicates with the air cavity (11), the anti-flood support (2) is sealingly connected with the drain pipe (1) and the anti-flood water pipe (3).

3. The urban waterlogging-preventing water network structure of quick drainage and reverse flow prevention according to claim 2, characterized in that: The anti-flood water pipe (3) is located above the drain pipe (1), both ends of the anti-flood water pipe (3) are provided with fixed grooves for containing the magnet piece (9), the top end of the anti-flood water pipe (3) is provided with a hanging table for supporting.

4. The urban waterlogging-preventing water network structure of quick drainage and reverse flow prevention according to claim 3, characterized in that: The flexible baffle (5) comprises a hanging rope (51) made of elastic material and an extension waterproof piece (52) made of flexible material, the hanging rope (51) is fixedly installed at the bottom of the hanging table, the bottom of the hanging rope (51) is fixedly installed with the extension waterproof piece (52) fixed with the anti-flood water pipe (3).

5. The urban waterlogging-preventing water network structure of quick drainage and reverse flow prevention according to claim 4, characterized in that: The traction line (6) is fixedly installed in the inside of the extension waterproof piece (52), the diameter of the floating piece (7) is the same as the inner diameter of the drain pipe (1), the floating piece (7) is provided in a semicircular structure, and the floating piece (7) is located in the inside of the drain pipe (1).

6. The urban waterlogging-preventing water network structure of quick drainage and reverse flow prevention according to claim 5, characterized in that: The stainless steel piece (8) is fixedly installed at one end of the extension waterproof piece (52), and the magnet piece (9) is fixedly installed in the inside of the anti-flood water pipe (3).

7. The quick-draining and backflow-preventing urban waterlogging-prevention water network structure according to claim 6, characterized in that: The top rod (10) comprises an extrusion spring (101) for providing elasticity and an extrusion rod (102) for pushing, the extrusion spring (101) is fixedly installed in the inside of the anti-flood water pipe (3), one end of the extrusion spring (101) is fixedly installed with the extrusion rod (102) for moving in the inside of the anti-flood water pipe (3), the air cavity (11) is formed in the inside of the anti-flood water pipe (3), and the extrusion floating plate (12) is movably connected to the inside of the drain pipe (1).