Connecting structure of airport drainage ditch and pipe culvert

Abstract

The utility model relates to the technical field of airport drainage, and discloses an airport drainage ditch and pipe culvert connecting structure which comprises a drainage ditch, a pipe culvert, a first anti-blocking net, a second anti-blocking net and a one-way cover. The drainage ditch and the pipe culvert are sequentially arranged in the sewage flowing direction; the first anti-blocking net is arranged in the drainage ditch and is used for preliminarily filtering impurities in sewage; the second anti-blocking net is arranged at the joint of the drainage ditch and the pipe culvert and is used for secondarily filtering impurities in the sewage; the one-way cover is rotatably arranged in the pipe culvert, and the opening direction of the one-way cover faces the pipe culvert so as to limit odor generated by sewage in the pipe culvert from flowing into the drainage ditch. The one-way cover is rotatably arranged in the pipe culvert, and the opening direction of the one-way cover faces the pipe culvert. When sewage in the pipe culvert is fermented to generate odor, the one-way cover can prevent the odor from reversely flowing into the drainage ditch, so that the odor is prevented from diffusing to an airport area through the drainage ditch, and an odor-free environment is provided for passengers, workers and other pedestrians in an airport.

Description

Technical Field

[0001] This utility model relates to the field of airport drainage technology, and in particular to a connection structure for airport drainage ditches and culverts. Background Technology

[0002] The combined use of drainage ditches and culverts is common in airport drainage systems. However, impurities and pollutants entering the drainage culverts can cause blockages, especially those located beneath runways, taxiways, and aprons. Blockages can significantly increase maintenance costs and even lead to water pollution, altering the airport's pavement geology. Therefore, it is crucial to minimize the risk of drainage culvert blockages and improve the cleanliness of airport wastewater. Furthermore, wastewater left uncleaned for extended periods can ferment and produce foul odors. These odors can flow back through the culverts into the drainage ditches and then upwards into the airport, causing inconvenience to pedestrians. Utility Model Content

[0003] This utility model aims to provide a connection structure between an airport drainage ditch and a culvert to solve the technical problem in the prior art where odors from sewage may flow backward through the culvert to the drainage ditch and then upward through the drainage ditch to the airport.

[0004] The technical problem solved by this utility model embodiment is addressed by the following technical solution:

[0005] A connection structure for airport drainage ditches and culverts is provided, comprising:

[0006] gutter;

[0007] The drainage ditch and the culvert are arranged sequentially along the direction of sewage flow.

[0008] The first anti-clogging net is installed in the drainage ditch to initially filter impurities in the sewage;

[0009] The second anti-clogging net is installed at the connection between the drainage ditch and the culvert, and is used for secondary filtration of impurities in the sewage.

[0010] A one-way cover is rotatably disposed inside the culvert, with the opening of the one-way cover facing the culvert, to restrict the flow of odors generated by sewage in the culvert into the drainage ditch.

[0011] In some embodiments, the one-way cover includes a cover body and a tube body;

[0012] The pipe body is hollowed out in the middle to allow sewage to flow through, and the pipe body is fixed inside the culvert;

[0013] The cover is rotatably disposed on the pipe body at one end facing the culvert, so as to open or close to allow sewage to flow or block odors.

[0014] In some embodiments, an abutting step is provided at the end opening of the tube body, and when the cover closes the opening of the tube body, the abutting step and the cover body fit together.

[0015] In some embodiments, the tube body includes a rotating shaft, a mounting portion is provided at the end opening of the tube body, and a rotating hole is provided on the cover body;

[0016] The rotating shaft passes through the rotating hole to rotatably connect the mounting part to the tube body.

[0017] In some embodiments, the one-way cover further includes a return spring, one end of which is connected to the cover body and the other end of which is connected to the abutment step. The return spring is used to close the cover body and the abutment step to prevent the flow of odor.

[0018] In some embodiments, the first anti-clogging net is a four-sided mesh cage structure.

[0019] In some embodiments, the second anti-clogging mesh is a single-sided mesh structure.

[0020] In some embodiments, a filter layer is further included, which is disposed between the first anti-clogging mesh and the second anti-clogging mesh.

[0021] In some embodiments, the filter layer is composed of gravel or small-diameter pebbles, and the thickness of the filter layer gradually increases along the direction of wastewater flow.

[0022] Compared with existing technologies, in the connection structure of the airport drainage ditch and culvert provided in this embodiment of the utility model, the first anti-clogging net is set inside the drainage ditch, which can perform preliminary filtration of sewage and intercept larger and more obvious impurities in the sewage, such as tree branches and large pieces of garbage. This can effectively prevent these large particles of impurities from entering the connection between the drainage ditch and the culvert, as well as the inside of the culvert, avoiding physical damage to the second anti-clogging net and the culvert, extending their service life, and reducing the maintenance costs caused by frequent replacement of parts due to impurities. Furthermore, the first anti-clogging net can filter large particles of impurities in advance, preventing them from accumulating in the drainage ditch and obstructing the normal flow of water, ensuring efficient drainage of the drainage ditch, reducing the risk of water accumulation due to poor drainage, and ensuring the normal operation of areas such as airport runways, taxiways, and aprons. After the preliminary filtration by the first anti-clogging net, the second anti-clogging net performs secondary filtration of the sewage, which can further intercept finer impurities, such as small stones, sand, and some debris that passed through the first anti-clogging net. This significantly reduces the impurity content of the wastewater entering the culvert, effectively minimizing the possibility of blockages. This is especially beneficial for culverts located beneath runways, taxiways, and aprons, where maintenance is difficult, greatly reducing operational costs. The one-way cover is rotatably installed inside the culvert, with its opening facing the culvert. When wastewater ferments and produces odors, the one-way cover prevents the odors from flowing back into the drainage ditch, thus preventing the odors from spreading to the airport area. This provides an odor-free environment for passengers, staff, and other pedestrians, improving airport environmental quality and passenger experience. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the drawings in the drawings are not to be limited by scale.

[0024] Figure 1 This is a schematic diagram of the connection structure of the airport drainage ditch and culvert provided by this utility model;

[0025] Figure 2 This is a cross-sectional view of the first anti-clogging net provided by this utility model;

[0026] Figure 3 This is a cross-sectional view of the filter layer provided by this utility model;

[0027] Figure 4 This is a cross-sectional view of the second anti-clogging net provided by this utility model;

[0028] Figure 5 This is a cross-sectional view of the connection structure of the airport drainage ditch and culvert provided by this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the one-way cover provided by this utility model.

[0030] Marked in the image:

[0031] 100. Connection structure of airport drainage ditch and culvert; 10. Drainage ditch; 20. Culvert; 30. First anti-clogging net; 40. Second anti-clogging net; 50. One-way cover; 51. Cover body; 52. Pipe body; 521. Abutment step; 522. Rotating shaft; 523. Installation part; 60. Filter layer. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0034] The following is combined with Figures 1 to 6 The connection structure 100 of the airport drainage ditch and culvert provided in this application will be described in detail through specific embodiments.

[0035] Please refer to the following: Figures 1 to 6 , Figure 1 This is a schematic diagram of the connection structure of the airport drainage ditch and culvert provided by this utility model; Figure 2 This is a cross-sectional view of the first anti-clogging net provided by this utility model; Figure 3 This is a cross-sectional view of the filter layer provided by this utility model; Figure 4 This is a cross-sectional view of the second anti-clogging net provided by this utility model; Figure 5 This is a cross-sectional view of the connection structure of the airport drainage ditch and culvert provided by this utility model; Figure 6This is a schematic diagram of the one-way cover provided by this utility model. One embodiment of this utility model provides an airport drainage ditch and culvert connection structure 100, including a drainage ditch 10, a culvert 20, a first anti-clogging net 30, a second anti-clogging net 40, and a one-way cover 50. The drainage ditch 10 and the culvert 20 are arranged sequentially along the sewage flow direction; the first anti-clogging net 30 is disposed within the drainage ditch 10 for preliminary filtration of impurities in the sewage; the second anti-clogging net 40 is disposed at the connection between the drainage ditch 10 and the culvert 20 for secondary filtration of impurities in the sewage; the one-way cover 50 is rotatably disposed within the culvert 20, with its opening facing the culvert 20, to restrict the flow of odors generated by sewage in the culvert 20 into the drainage ditch 10.

[0036] The first anti-clogging net 30 is installed inside the drainage ditch 10 to perform preliminary filtration of sewage, intercepting larger and more noticeable impurities such as tree branches and large pieces of garbage. This effectively prevents these large particles from entering the connection between the drainage ditch 10 and the culvert 20, as well as the interior of the culvert 20, avoiding physical damage to the second anti-clogging net 40 and the culvert 20, extending their service life, and reducing maintenance costs associated with frequent component replacements due to impurities. Furthermore, the first anti-clogging net 30 can filter large particles in advance, preventing their accumulation in the drainage ditch 10 and obstructing normal water flow, ensuring efficient drainage of the drainage ditch 10, reducing the risk of water accumulation due to poor drainage, and guaranteeing the normal operation of areas such as airport runways, taxiways, and aprons.

[0037] After the initial filtration by the first anti-clogging net 30, the second anti-clogging net 40 performs secondary filtration of the wastewater, further intercepting finer impurities such as small stones, sand, and debris that passed through the first anti-clogging net 30. This significantly reduces the impurity content of the wastewater entering the culvert 20, effectively reducing the possibility of clogging, especially for culverts 20 located under runways, taxiways, and aprons where maintenance is difficult, greatly reducing operation and maintenance costs.

[0038] In this embodiment, the one-way cover 50 is rotatably disposed inside the culvert 20, with its opening facing the culvert 20. When sewage fermentation in the culvert 20 produces an odor, the one-way cover 50 can prevent the odor from flowing back into the drainage ditch 10, thereby preventing the odor from spreading to the airport area through the drainage ditch 10, providing an odor-free environment for passengers, staff and other pedestrians in the airport, and improving the airport's environmental quality and passenger experience.

[0039] In some embodiments, the one-way cover includes a cover body 51 and a pipe body 52; the pipe body 52 is hollowed out in the middle to allow sewage to flow through, and the pipe body 52 is fixed inside the culvert 20; the cover body 51 is rotatably disposed on the pipe body 52 at one end facing the culvert 20 to open or close to allow sewage to flow through or block odors.

[0040] The one-way cover consists of a cover body 51 and a pipe body 52. ​​The pipe body 52 is hollowed out in the middle and fixed inside the culvert 20. Its function is to provide a stable flow channel for sewage, ensuring the continuity and stability of sewage flow within the culvert 20. This fixed arrangement can withstand large water flow impacts, ensuring that the drainage function is not affected, and also provides a supporting foundation for the installation and operation of the cover body 51.

[0041] The cover 51 is rotatably mounted at the opening of the pipe body 52 facing the culvert 20, providing flexible opening and closing functionality. During normal sewage flow, the impact force of the water flow allows the cover 51 to open, ensuring the sewage flows smoothly into the downstream culvert 20. When sewage ferments and produces odors within the culvert 20, the cover 51 automatically closes under the influence of pressure difference, effectively preventing the odors from flowing back into the drainage ditch 10. This flexible control mechanism enables precise management of sewage and odors, ensuring the normal operation of the drainage system while preventing odor pollution of the airport environment.

[0042] In some embodiments, an abutting step 521 is provided at the end opening of the tube body 52. ​​When the cover 51 closes the opening of the tube body 52, the abutting step 521 and the cover 51 fit together.

[0043] When the cover 51 closes the opening of the pipe 52, the abutment step 521 fits snugly against the cover 51, a design that significantly enhances sealing performance. When wastewater ferments and produces odors within the culvert 20, and the pressure rises, the tight seal formed by the abutment step 521 and the cover 51 effectively prevents odors from flowing back into the drainage ditch 10 through gaps. Compared to the absence of the abutment step 521, this greatly reduces the possibility of odor leakage, better maintains the freshness of the airport environment, and avoids adverse effects on the olfactory experience and health of airport personnel.

[0044] Furthermore, the abutment step 521 can restrict the cover 51 from rotating toward the inside of the pipe 52, thereby causing the impact force of the odor to break open the cover 51 and enter the drainage ditch 10.

[0045] In some embodiments, the tube body 52 includes a rotating shaft 522, and a mounting portion 523 is provided at the end opening of the tube body 52. ​​A rotating hole is provided on the cover body 51. The rotating shaft 522 passes through the rotating hole to rotatably connect the mounting portion 523 and the tube body 52.

[0046] The cooperation between the rotating shaft 522 and the rotating hole provides a smooth rotation mechanism for the cover 51. When sewage flows into the culvert 20, the impact force generated by the water flow can easily push the cover 51 to rotate around the rotating shaft 522, allowing the cover 51 to open quickly and ensuring the smooth passage of sewage. When the water flow stops or the pressure changes, the cover 51 can flexibly rotate back to its original position around the rotating shaft 522 under the action of air pressure, closing the opening of the culvert 52. This flexible rotation performance ensures that the drainage system can operate normally under different water flow conditions, effectively avoiding drainage problems or odor leakage caused by the inflexible rotation of the cover 51.

[0047] In some embodiments, the one-way cover 50 further includes a return spring, one end of which is connected to the cover body 51 and the other end of which is connected to the abutment step 521. The return spring is used to close the cover body 51 and the abutment step 521 to prevent the flow of odor.

[0048] One end of the return spring is connected to the cover 51, and the other end is connected to the abutment step 521. Its main function is to continuously provide a force that tightly closes the cover 51 and the abutment step 521. When sewage in the culvert 20 produces odor, even if the air pressure inside the culvert 20 fluctuates, the elasticity of the return spring ensures that the cover 51 remains in contact with the abutment step 521, further enhancing the sealing effect. Compared to relying solely on the weight of the cover 51 or air pressure difference for closure, this significantly reduces the risk of odor leakage, providing more reliable protection for the airport environment and preventing discomfort to passengers and staff due to odor escape.

[0049] During airport drainage processes, water flow conditions are complex and variable. When the sewage flow suddenly increases and the water flow impact force is strong, the cover 51 may be forcefully pushed open by the water flow. However, the presence of a return spring allows the cover 51 to be quickly pulled back to its original position and tightly closed when the water flow impact force weakens. This ensures that the drainage system can operate stably under different water flow velocities and pressures, guaranteeing smooth sewage discharge while effectively preventing odor backflow, thus improving the drainage system's ability to cope with complex operating conditions.

[0050] In some embodiments, the first anti-clogging net 30 is a four-sided mesh cage-like structure.

[0051] The four-sided mesh cage structure allows the first anti-clogging net 30 to intercept and filter sewage from multiple directions. Regardless of the angle from which sewage flows into the drainage ditch 10, the mesh cage effectively functions, significantly improving the impurity capture rate compared to single-sided or partial-sided filtration structures. It comprehensively intercepts debris such as branches, leaves, and large pieces of garbage in the sewage, preventing these impurities from accumulating in the drainage ditch 10, obstructing water flow, and ensuring smooth drainage.

[0052] In some embodiments, the second anti-clogging mesh 40 is a single-sided mesh structure. The single-sided mesh structure is more suitable for secondary fine filtration of wastewater after the initial filtration by the first anti-clogging mesh 30. It can specifically intercept fine impurities remaining after the initial filtration, such as small stones, sand, and debris. The single-sided design concentrates the filtration function in a specific direction, precisely purifying the wastewater flowing into the culvert 20, further reducing the impurity content entering the culvert 20, and effectively reducing the possibility of clogging.

[0053] In some embodiments, a filter layer 60 is also included, disposed between the first anti-clogging net 30 and the second anti-clogging net 40. The filter layer 60, disposed between the first anti-clogging net 30 and the second anti-clogging net 40, can further purify the pre-filtered wastewater. It can remove impurities such as fine particles, some colloids, and dissolved impurities from the wastewater, which may pass through the first anti-clogging net 30 but pose a potential risk of clogging to the culvert 20. Through the interception and adsorption effect of the filter layer 60, the wastewater is more thoroughly purified before entering the second anti-clogging net 40, further reducing the impurity content entering the culvert 20, effectively improving the overall purification capacity of the airport drainage system, better ensuring the smooth flow of the culvert 20, reducing clogging problems caused by impurities, and lowering operation and maintenance costs.

[0054] It should be noted that the connection structure 100 for airport drainage ditches and culverts provided in this embodiment of the present invention only shows the part related to the technical problem to be solved by this embodiment of the present invention. It can be understood that the connection structure 100 for airport drainage ditches and culverts provided in this embodiment of the present invention also includes other structures for realizing the function of the connection structure 100 for airport drainage ditches and culverts, which will not be described in detail here.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A connecting structure of an airport drainage ditch and a pipe culvert, characterized by, The utility model relates to a sewage drainage device, which comprises: a drainage ditch; a pipe culvert arranged along the direction of sewage flow, the drainage ditch and the pipe culvert being arranged in sequence; a first anti-blocking net arranged in the drainage ditch for preliminarily filtering impurities in sewage; a second anti-blocking net arranged at the joint of the drainage ditch and the pipe culvert for secondarily filtering impurities in sewage; a one-way cover rotatably arranged in the pipe culvert, the opening direction of the one-way cover being towards the pipe culvert to limit the flow of odor generated by sewage in the pipe culvert into the drainage ditch.

2. The connection structure of an airport drainage ditch and a pipe culvert according to claim 1, characterized by, The one-way cover comprises a cover body and a pipe body. The pipe body is hollow in the middle to allow the flow of sewage, and the pipe body is fixed in the pipe culvert. The cover body is rotatably arranged at the opening end of the pipe body towards the pipe culvert to open or close to allow the flow of sewage or block the flow of odor.

3. The connection structure of the airport drainage ditch and the pipe culvert according to claim 2, characterized by The end opening of the pipe body is provided with an abutting step, and when the cover body closes the opening of the pipe body, the abutting step and the cover body are in close contact with each other.

4. The connection structure of the airport drainage ditch and the pipe culvert according to claim 3, characterized by The pipe body comprises a rotating shaft, the end opening of the pipe body is provided with a mounting portion, and the cover body is provided with a rotating hole. The rotating shaft is arranged in the rotating hole to rotatably connect the mounting portion and the pipe body.

5. The connection structure of the airport drainage ditch and the pipe culvert according to claim 4, characterized by The one-way cover further comprises a return spring, one end of the return spring is connected with the cover body, the other end is connected with the abutting step, and the return spring is used to close the cover body and the abutting step to prevent the flow of odor.

6. The connection structure of an airport drainage ditch and a pipe culvert according to Claim 1, wherein The first anti-blocking net is a four-sided net-shaped cage structure.

7. The connection structure of an airport drainage ditch and a pipe culvert according to Claim 1, wherein The second anti-blocking net is a single-sided net structure.

8. The connection structure of an airport drainage ditch and a pipe culvert according to Claim 1, wherein Further comprising a filter layer arranged between the first anti-blocking net and the second anti-blocking net.

9. The connection structure of the airport drainage ditch and the pipe culvert according to claim 8, characterized by, The filter layer is composed of gravel or small-sized pebbles, and the thickness of the filter layer gradually increases along the direction of sewage flow.

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