An anti-inundation drainage device

Abstract

The application discloses an anti-internal waterlogging drainage device and relates to the technical field of drainage devices, which comprises a filter cover plate, a floor drain main body and a floor drain core. The floor drain core comprises a movable valve body and a valve seat. An adjusting mechanism is arranged in the movable valve body. The adjusting mechanism comprises an adjuster, a first detection pipe and a second detection pipe. An adjusting block is slidably arranged in the adjuster. A central hole and a plurality of air vents are formed in the adjusting block. The adjuster is provided with an upper communication pipe and a lower communication pipe corresponding to the central hole. The upper communication pipe is connected with the space above the movable valve body. The lower communication pipe is connected with the space below the movable valve body. The adjusting block is connected with corrugated pipes on the two sides. The two corrugated pipes are extended and contracted under the action of pressure difference, so that the air vents, the upper communication pipe and the lower communication pipe form air guide channels. The application can quickly balance the upstream and downstream pressures of the drainage channel, guarantee the smoothness of large-flow drainage, and avoid the internal waterlogging problem caused by the interruption or poor drainage due to heavy rain and pipeline pressure fluctuation.

Description

Technical Field

[0001] This invention relates to the field of drainage device technology, and more particularly to a drainage device for preventing urban flooding. Background Technology

[0002] In drainage systems of buildings, residential communities, and municipal roads, during heavy rainfall, rainwater pipe networks can quickly collect large amounts of water, which can easily lead to water accumulation in low-lying areas, underground garage entrances, sunken courtyards, and other areas, and even cause backflow, resulting in property damage and safety hazards. Traditional drainage systems primarily function to drain water and intercept debris. Their drainage capacity is limited, and they lack the ability to cope with drastic pressure fluctuations in the pipeline system. For example, when encountering short-term heavy rainfall, and the municipal drainage network is under full or overload, drastic positive or negative pressure fluctuations (such as water hammer) will occur in the pipes. These pressure fluctuations will impact the bottom valves of the drainage system: negative pressure in the pipes may cause the system to fail to seal, leading to backflow of underground sewage and odors; positive pressure in the pipes may force the drainage valves to close abnormally, which, during the critical period of urban flooding when rapid drainage is urgently needed, will instead hinder the discharge of accumulated water and exacerbate the risk of urban flooding.

[0003] Therefore, there is an urgent need for a specialized flood control and drainage device that can adapt to drastic fluctuations in pipeline pressure, ensure unobstructed drainage channels for large volumes of wastewater, and effectively prevent sewage backflow. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art by providing a flood prevention and drainage device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A flood prevention and drainage device includes a filter cover, a drain body, and a drain core. The drain core includes a movable valve body and a valve seat. The movable valve body has an adjustment mechanism inside. The adjustment mechanism includes a regulator, a first detection tube, and a second detection tube. An adjustment block is slidably installed inside the regulator. The adjustment block has a central hole and multiple vents. The regulator has an upper connecting pipe and a lower connecting pipe corresponding to the central hole. The upper connecting pipe is connected to the space above the movable valve body, and the lower connecting pipe is connected to the space below the movable valve body. The regulating block is connected to bellows on both sides. The first detection tube and the second detection tube introduce the air pressure on the upper and lower sides of the movable valve body into the corresponding bellows. The bellows on both sides expand and contract under the action of pressure difference, pushing the regulating block to move laterally, so that the vent and the upper and lower connecting pipes form an air guiding passage, thereby quickly balancing abnormal pressure.

[0006] As a further embodiment of the present invention: the valve seat is fixedly installed inside the drain body, the top of the valve seat is provided with a drain outlet, the bottom is provided with a mounting base, the movable valve body is disposed in the drain outlet, and a guide rod is fixedly connected below it. The bottom of the guide rod is slidably installed in the mounting base, and the mounting base is provided with a driving component for pushing the guide rod to move upward.

[0007] As a further aspect of the present invention: when the air pressure on the upper and lower sides of the movable valve body is equal, the adjusting block is in the center position of the regulator, and at this time the central hole is coaxially aligned with the upper and lower connecting pipes; The central hole is equipped with a normally closed one-way flow guiding unit, which includes a blocking ball and a micro spring. The central hole is a stepped hole that vertically penetrates the adjusting block, with its upper diameter being smaller than its lower diameter. The micro spring is fixed to the bottom of the central hole, and the top of the micro spring is fixedly connected to the blocking ball. The blocking ball seals the upper part of the central hole in its natural state. There are two vents, symmetrically distributed on both sides of the central hole, and they are vertical through holes that pass through the adjustment block.

[0008] As a further embodiment of the present invention: the first detection tube is fixedly installed on the left side of the regulator, one end of which is connected to the bellows on the left side of the regulating block, and the other end is connected to the space below the movable valve body. The second detection tube is fixedly installed on the right side of the regulator, with one end connected to the bellows on the right side of the regulating block and the other end connected to the upper connecting pipe.

[0009] As a further aspect of the present invention: one end of each bellows is fixedly connected to the inner wall of the regulator, and the other end is fixedly connected to the side of the regulating block.

[0010] As a further aspect of the present invention: the top of the upper connecting pipe is provided with an anti-overflow unit to prevent excessive water from entering the upper connecting pipe above the movable valve body; The bottom of the first detection tube is equipped with an anti-overflow unit to prevent water overflowing from below the movable valve body from entering the first detection tube and the bellows. The overflow prevention unit includes an upper baffle plate, a lower baffle plate, and a float. The upper and lower baffle plates are conical, and each of the upper and lower baffle plates has an opening with a diameter smaller than that of the float. The float has a density less than that of water. In the absence of water, the float falls onto the lower baffle plate and blocks its opening; in the presence of water, the float rises and blocks the opening of the upper baffle plate.

[0011] As a further aspect of the present invention: the connection point between the second detection tube and the upper connecting tube is located below the lower baffle plate inside the upper connecting tube; The lower barrier plate has air holes for air to pass through.

[0012] As a further aspect of the present invention: the diameter of the movable valve body is larger than the diameter of the drain outlet, the top of the movable valve body is provided with a hemispherical structure, and the hemispherical part is adapted to seal the drain outlet. The upper connecting pipe is located at the center of the movable valve body, and the top of the upper connecting pipe is flush with the highest point of the top of the movable valve body. The top of the movable valve body is provided with several guide ribs.

[0013] As a further aspect of the present invention: a detachable threaded collar is fitted on the top of the valve seat, and the threaded collar is made of elastic rubber. The valve seat is fixedly connected to the inner wall of the drain body via a threaded collar.

[0014] As a further aspect of the present invention: the driving component is a spring or a magnetic assembly composed of multiple magnetic blocks, used to provide elastic force or magnetic force to drive the guide rod to move.

[0015] Compared with existing technologies, the advantages of this invention are: 1. By setting up an adjustment mechanism consisting of a regulator, a detection tube, and a bellows inside the movable valve body, the pressure difference between the upper and lower sides of the movable valve body can be sensed in real time. The deformation of the bellows drives the adjustment block to move laterally, automatically establishing or cutting off the air passage. This effectively balances abnormal pressure fluctuations in scenarios such as heavy rain and water hammer, preventing the movable valve body from opening accidentally or closing suddenly due to pressure imbalance. This ensures the continuous smooth flow of large-flow drainage channels, fundamentally reducing the risk of waterlogging and flooding, while also blocking sewer odors and pests.

[0016] 2. The normally closed unidirectional flow guide unit installed in the central hole maintains a seal under normal conditions with its plug ball and miniature spring structure, effectively preventing gas leakage and ensuring the accuracy of air pressure sensing. When water accidentally enters the upper connecting pipe, it can open in time and drain the accumulated water to the bottom of the movable valve body, preventing water from entering the second detection pipe and interfering with the accuracy of air pressure detection. The normally closed flow guide unit and the anti-overflow unit work together to ensure the accuracy of pressure detection and protect components such as bellows from water immersion damage, ensuring the stable operation of the device in severe drainage scenarios such as rainstorms and flooding, and continuously performing the function of flood prevention and drainage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the drain core of the present invention; Figure 3 This is a schematic diagram of the disassembled structure of the drain core of the present invention; Figure 4 This is a schematic diagram of the internal structure of the movable valve body of the present invention; Figure 5 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 6 This is a schematic diagram of the internal structure of the adjusting mechanism of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the internal structure of the adjusting mechanism of the present invention. Figure 2 ; Figure 8 for Figure 7 A magnified schematic diagram of the partial structure at point A in the middle; Figure 9 This is a cross-sectional structural diagram of the adjustment mechanism of the present invention; Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B in the middle.

[0018] In the diagram: 1. Filter cover; 2. Drain body; 3. Drain core; 4. Movable valve body; 5. Valve seat; 6. Drain outlet; 7. Mounting base; 8. Guide rod; 9. Drive component; 10. Adjustment mechanism; 11. Regulator; 12. First detection tube; 13. Second detection tube; 14. Adjustment block; 15. Center hole; 16. Vent; 17. Upper connecting pipe; 18. Lower connecting pipe; 19. Bellows; 20. Normally closed unidirectional flow guide unit; 21. Blocking ball; 22. Miniature spring; 23. Anti-overflow unit; 24. Upper baffle plate; 25. Lower baffle plate; 26. Float ball; 27. Flow guide rib; 28. Threaded collar. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Reference Figures 1 to 10 A waterlogging prevention and drainage device includes a filter cover plate 1, a drain body 2, and a drain core 3. The filter cover plate 1 is installed on the top of the drain body 2 and can intercept debris such as leaves and plastic to prevent debris from entering the drain and causing blockage, thus ensuring smooth drainage. The drain core 3 includes a movable valve body 4 and a valve seat 5. The valve seat 5 is fixedly connected to the threaded structure of the inner wall of the drain body 2 through a detachable threaded collar 28 fitted on its top. The threaded collar 28 is made of elastic rubber. This design not only facilitates installation and disassembly, making it convenient for future maintenance and replacement of the drain core 3, but also ensures the sealing of the connection and prevents sewage from leaking from the connection.

[0021] The valve seat 5 has a drain port 6 at the top and a mounting seat 7 at the bottom. The movable valve body 4 is located in the drain port 6 at the top of the valve seat 5. Its diameter is larger than that of the drain port 6. The top of the movable valve body 4 is a hemispherical structure, and the hemispherical part is adapted to seal the drain port 6. The top of the movable valve body 4 is also provided with several guide ribs 27. The hemispherical structure can better fit with the drain port 6 to enhance the sealing effect, while the guide ribs 27 can guide the water flow to drain quickly and improve the drainage efficiency.

[0022] A guide rod 8 is fixedly connected to the bottom of the movable valve body 4. The bottom of the guide rod 8 is slidably installed in the mounting seat 7 at the bottom of the valve seat 5. The mounting seat 7 is equipped with a driving component 9, which can be a spring or a magnetic force assembly composed of multiple magnetic blocks. It is used to push the guide rod 8 upward, thereby driving the movable valve body 4 to move upward to block the drain outlet 6. Under normal conditions, the force of the driving component 9 makes the movable valve body 4 tightly seal the drain outlet 6, effectively preventing sewer odors and pests from entering the room and ensuring the cleanliness of the indoor environment.

[0023] Reference Figures 5 to 10 The movable valve body 4 is equipped with an adjustment mechanism 10, which includes a regulator 11, a first detection tube 12, and a second detection tube 13. An adjustment block 14 is slidably installed inside the regulator 11. The adjustment block 14 has a central hole 15 and two vents 16 symmetrically distributed on both sides of the central hole 15. Both the central hole 15 and the vents 16 are vertical through holes penetrating the adjustment block 14. The central hole 15 is a stepped hole with an upper diameter smaller than the lower diameter.

[0024] The regulator 11 is provided with an upper connecting pipe 17 and a lower connecting pipe 18 at the position corresponding to the center hole 15. The upper connecting pipe 17 is located at the center of the movable valve body 4, and its top is flush with the highest point of the top of the movable valve body 4. The upper connecting pipe 17 is connected to the space above the movable valve body 4, and the lower connecting pipe 18 is connected to the space below the movable valve body 4.

[0025] Bellows 19 are connected to both sides of the regulating block 14. One end of each bellows 19 is fixedly connected to the inner wall of the regulator 11, and the other end is fixedly connected to the side of the regulating block 14. The first detection tube 12 is fixedly installed on the left side of the regulator 11, with one end connected to the bellows 19 on the left side of the regulating block 14 and the other end connected to the space below the movable valve body 4. The second detection tube 13 is fixedly installed on the right side of the regulator 11, with one end connected to the bellows 19 on the right side of the regulating block 14 and the other end connected to the upper connecting pipe 17.

[0026] When heavy rainfall causes the pipeline network to be fully loaded, resulting in violent pressure fluctuations and causing a pressure difference between the upper and lower sides of the movable valve body 4, the regulating mechanism 10 plays its role in balancing pressure. It transmits pressure to the bellows 19 on both sides through the first detection tube 12 and the second detection tube 13. The bellows 19 on both sides will sense the air pressure on the upper and lower sides of the movable valve body 4. The pressure difference causes the bellows 19 to expand and contract, thereby pushing the regulating block 14 to move laterally.

[0027] When the air pressure above the movable valve body 4 is greater than the air pressure below it, the pressure in the right bellows 19 is greater than that on the left, pushing the adjusting block 14 to move to the left; when the air pressure below the movable valve body 4 is greater than the air pressure above it, the pressure in the left bellows 19 is greater than that on the right, pushing the adjusting block 14 to move to the right. In both cases, the vent 16 will form an air guiding passage with the upper connecting pipe 17 and the lower connecting pipe 18, quickly balancing the air pressure above and below the movable valve body 4, preventing the movable valve body 4 from opening accidentally or closing suddenly due to pressure imbalance, and ensuring smooth drainage.

[0028] This design ensures that the opening and closing of the movable valve body 4 is controlled only by the pressure of the water above, and will not be interfered with by abnormal pressure in the pipe network. This ensures that the drainage channel is stably open during flood drainage, avoiding the risk of water not being able to drain due to accidental closure of the movable valve body 4. It also eliminates the possibility of the valve being sucked open and backflow occurring due to negative pressure in the pipe network.

[0029] A normally closed one-way flow guide unit 20 is installed inside the central hole 15. The normally closed one-way flow guide unit 20 includes a plug ball 21 and a miniature spring 22. The miniature spring 22 is fixed to the bottom of the central hole 15, and its top is fixedly connected to the plug ball 21. In its natural state, the plug ball 21 seals the upper part of the central hole 15. Under normal conditions, the normally closed one-way flow guide unit 20 remains sealed to prevent gas leakage and ensure the accuracy of pressure detection. When water accidentally enters the upper connecting pipe 17, the water pressure will push open the plug ball 21 and discharge the accumulated water to below the movable valve body 4, preventing water from accumulating and entering the second detection pipe 13 to interfere with the air pressure detection.

[0030] Both the top of the upper connecting pipe 17 and the bottom of the first detection pipe 12 are equipped with overflow prevention units 23. The overflow prevention unit 23 includes an upper baffle plate 24, a lower baffle plate 25, and a float 26. The upper baffle plate 24 and the lower baffle plate 25 are conical and have openings with a diameter smaller than that of the float 26. The float 26 has a density less than that of water. The connection between the second detection pipe 13 and the upper connecting pipe 17 is located below the lower baffle plate 25 inside the upper connecting pipe 17. The lower baffle plate 25 has vents for air to pass through.

[0031] When the overflow prevention unit 23 is dry, the float 26 rests on the lower baffle plate 25, which does not affect air circulation. When water enters, the float 26 rises to block the opening of the upper baffle plate 24, preventing water from entering further and avoiding water overflowing into the second detection tube 13 in the upper connecting pipe 17, thus interfering with air pressure detection.

[0032] It should be noted that when sewage overflows back into the pipeline, both the anti-overflow unit 23 and the normally closed unidirectional flow guiding unit 20 can prevent sewage from overflowing back into the pipeline.

[0033] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0034] The steps involved in this application are as follows: S1: In normal conditions, the drive unit 9 pushes the guide rod 8 to move upward, which in turn drives the movable valve body 4 to move upward. Its top hemispherical structure is adapted to seal the drain outlet 6 to achieve a seal, effectively isolating the underground pipe network and preventing backflow of sewage and waterlogging. S2: When there is a need for drainage, the water flows through the filter cover plate 1 into the drain body 2, impacts the top of the movable valve body 4, and the water pressure overcomes the force of the drive component 9, causing the movable valve body 4 to move downward and open the drain outlet 6. The water flows out through the drain outlet 6. After the drainage is completed, the drive component 9 pushes the guide rod 8 upward again, and the movable valve body 4 resets and seals the drain outlet 6, restoring the sealing state. S3: If the pressure of the municipal pipeline network fluctuates drastically, resulting in a pressure difference between the upper and lower sides of the movable valve body 4, the first detection pipe 12 and the second detection pipe 13 will introduce the pressure on both sides into the corresponding bellows 19 respectively. S4: The bellows 19 on both sides expand and contract under the action of pressure difference, pushing the adjusting block 14 to move laterally, so that the vent 16 forms an air passage with the upper connecting pipe 17 and the lower connecting pipe 18, and balances the air pressure above and below the movable valve body 4. S5: Under normal conditions, in the normally closed one-way flow guiding unit 20 inside the central hole 15, the plugging ball 21 blocks the upper part of the central hole 15 under the action of the miniature spring 22 to prevent gas leakage. S6: When water accidentally enters the upper connecting pipe 17, the water pressure pushes open the plug 21, and the accumulated water is discharged through the central hole 15 to the bottom of the movable valve body 4, preventing water from entering the second detection pipe 13. S7: When the overflow prevention unit 23 is dry, the float 26 falls on the lower baffle plate 25 and does not affect the air circulation; when water enters, the float 26 rises to block the opening of the upper baffle plate 24 and prevents water from entering further. S8: When it is necessary to clean or replace the drain core 3, the entire valve seat 5 and drain core 3 can be removed from the drain body 2 by unscrewing the elastic rubber detachable threaded collar 28. After maintenance, they can be screwed back in.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A flood prevention and drainage device, comprising a filter cover (1), a drain body (2), and a drain core (3), characterized in that, The drain core (3) includes a movable valve body (4) and a valve seat (5). The movable valve body (4) is provided with an adjustment mechanism (10). The adjustment mechanism (10) includes an adjuster (11), a first detection tube (12) and a second detection tube (13). An adjustment block (14) is slidably installed inside the adjuster (11). A central hole (15) and multiple vents (16) are opened on the adjustment block (14). The adjuster (11) is provided with an upper connecting pipe (17) and a lower connecting pipe (18) corresponding to the position of the central hole (15). The upper connecting pipe (17) is connected to the space above the movable valve body (4), and the lower connecting pipe (18) is connected to the space below the movable valve body (4). The regulating block (14) is connected to bellows (19) on both sides respectively. The first detection tube (12) and the second detection tube (13) respectively introduce the air pressure on the upper and lower sides of the movable valve body (4) into the corresponding bellows (19). The bellows (19) on both sides expand and contract under the action of pressure difference, pushing the regulating block (14) to move laterally, so that the vent (16) forms an air passage with the upper connecting pipe (17) and the lower connecting pipe (18), thereby quickly balancing the abnormal pressure.

2. The flood prevention and drainage device according to claim 1, characterized in that, The valve seat (5) is fixedly installed inside the drain body (2). The valve seat (5) has a drain outlet (6) at the top and a mounting seat (7) at the bottom. The movable valve body (4) is located inside the drain outlet (6) and a guide rod (8) is fixedly connected below it. The bottom of the guide rod (8) is slidably installed in the mounting seat (7). The mounting seat (7) has a drive component (9) inside it to push the guide rod (8) to move upward.

3. The flood prevention and drainage device according to claim 2, characterized in that, When the air pressure on the upper and lower sides of the movable valve body (4) is equal, the adjusting block (14) is in the center position of the regulator (11), and at this time the central hole (15) is coaxially aligned with the upper connecting pipe (17) and the lower connecting pipe (18). The central hole (15) is provided with a normally closed one-way flow guide unit (20). The normally closed one-way flow guide unit (20) includes a blocking ball (21) and a micro spring (22). The central hole (15) is a stepped hole that vertically penetrates the adjusting block (14). Its upper diameter is smaller than its lower diameter. The micro spring (22) is fixed at the bottom of the central hole (15). The top of the micro spring (22) is fixedly connected to the blocking ball (21). The blocking ball (21) seals the upper part of the central hole (15) in its natural state. There are two vents (16), which are symmetrically distributed on both sides of the central hole (15) and are vertical through holes that pass through the adjustment block (14).

4. A flood prevention and drainage device according to claim 3, characterized in that, The first detection tube (12) is fixedly installed on the left side of the regulator (11), with one end connected to the bellows (19) on the left side of the regulating block (14) and the other end connected to the space below the movable valve body (4). The second detection tube (13) is fixedly installed on the right side of the regulator (11), with one end connected to the bellows (19) on the right side of the regulating block (14) and the other end connected to the upper connecting pipe (17).

5. A flood prevention and drainage device according to claim 4, characterized in that, The bellows (19) are fixedly connected at one end to the inner wall of the regulator (11) and at the other end to the side of the regulating block (14).

6. A flood prevention and drainage device according to claim 5, characterized in that, The top of the upper connecting pipe (17) is provided with an anti-overflow unit (23) to prevent excessive water from entering the upper connecting pipe (17) above the movable valve body (4). The bottom of the first detection tube (12) is provided with an anti-overflow unit (23) to prevent water overflowing from below the movable valve body (4) from entering the first detection tube (12) and the bellows (19). The overflow prevention unit (23) includes an upper baffle plate (24), a lower baffle plate (25) and a float (26). The upper baffle plate (24) and the lower baffle plate (25) are conical. Both the upper baffle plate (24) and the lower baffle plate (25) have openings, and the diameter of the openings is smaller than the diameter of the float (26). The float (26) has a density less than that of water. In the absence of water, the float (26) falls onto the lower baffle plate (25) and seals its opening. When the water is in the inlet state, the float (26) floats up and blocks the opening of the upper baffle (24).

7. A flood prevention and drainage device according to claim 6, characterized in that, The connection point between the second detection tube (13) and the upper connecting tube (17) is located below the lower baffle plate (25) inside the upper connecting tube (17); The lower barrier plate (25) has air holes for air to pass through.

8. A flood prevention and drainage device according to claim 7, characterized in that, The diameter of the movable valve body (4) is larger than the diameter of the drain outlet (6). The top of the movable valve body (4) is set as a hemispherical structure, and the hemispherical part is adapted to be sealed inside the drain outlet (6). The upper connecting pipe (17) is located at the center of the movable valve body (4), and the top of the upper connecting pipe (17) is flush with the highest point of the top of the movable valve body (4); The top of the movable valve body (4) is provided with several guide ribs (27).

9. A flood prevention and drainage device according to claim 8, characterized in that, The valve seat (5) is fitted with a detachable threaded collar (28) on top, and the threaded collar (28) is made of elastic rubber. The valve seat (5) is fixedly connected to the inner wall of the drain body (2) by a threaded collar (28).

10. A flood prevention and drainage device according to claim 9, characterized in that, The driving component (9) is a spring or a magnetic assembly consisting of multiple magnetic blocks, used to provide elastic force or magnetic force to drive the guide rod (8) to move.

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