A quick-installation and quick-disassembly accordion-style culvert sealing and dredging system and its usage method

The use of accordion-style inflatable airbags and detachable sliding rail devices enables rapid sealing and dredging of culverts, solving the problems of difficult construction and high cost in existing technologies, and providing a convenient sealing and dredging solution.

CN116623782BActive Publication Date: 2026-05-26THE SECOND CONSTR OF CHINA CONSTR EIGHTH ENG DIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
THE SECOND CONSTR OF CHINA CONSTR EIGHTH ENG DIV
Filing Date
2023-05-26
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing methods for sealing culverts are prone to siltation during underwater construction, resulting in large-scale and costly cleanup work. Furthermore, the equipment cannot be reused, limiting its applicability.

Method used

It adopts an accordion-style inflatable airbag combined with a detachable sliding rail device, which enables rapid sealing and disassembly through inflation and deflation. Combined with a detachable sludge removal device, it enables rapid sludge removal.

Benefits of technology

It enables fast and convenient sealing and dredging operations. The device is reusable, reducing construction costs and workload, and is suitable for multiple culvert structures.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of culvert dredging technology, specifically a quick-installation and quick-dismantling accordion-type culvert sealing and dredging system and its usage method. It includes an accordion-type inflatable sealing device, a detachable sliding rail device located between the culvert and the sealing device, and an inflatable device connected to the sealing device. The sealing device includes two driven piles and an accordion-type airbag located between the two driven piles. The accordion-type airbag inflates to complete the sealing operation. The sliding rail device includes a sliding rail fixedly connected to the upper end of the culvert outlet. This invention, based on the accordion-type inflatable airbag structure, achieves quick installation and quick dismantling of culvert sealing through rapid inflation and deflation. The fixed track to the culvert ensures that the accordion-type airbag moves along the track during inflation, preventing the airbag from being blown open by water flow. After use, the track can be removed for reuse in other culverts.
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Description

Technical Field

[0001] This invention relates to the field of culvert dredging technology, specifically a quick-installation and quick-disassembly accordion-style culvert sealing and dredging system and its usage method. Background Technology

[0002] In urbanization, to meet environmental protection and safety requirements, existing open ditches and channels are often converted into culverts. When extending a culvert to its current full capacity, it's necessary to seal off the upstream and downstream sections on both sides of the extension. This is typically done by constructing earthen dams at the open channel locations to intercept water, but there are no effective methods for sealing existing culverts. Currently, the common method is to pile up soil for sealing, but this easily leads to siltation of the existing culvert and results in a large amount of cleaning work and high costs.

[0003] Patent CN 114232526 A discloses a quick-installation and quick-dismantling sealing system and method for sealing urban combined sewer culverts. The system includes a quick-installation and quick-dismantling temporary sealing module and a permanent-temporary combined high-efficiency, low-impact quick access road module detachably connected to the temporary sealing module. The quick-installation and quick-dismantling temporary sealing module includes a high-strength aluminum alloy column, a modular baffle, and matching fasteners. The permanent-temporary combined high-efficiency, low-impact quick access road module is a rectangular shaft detachably installed on the top plate of the culvert. The rectangular shaft is a prefabricated, modular rectangular shaft structure, consisting of a perimeter shaft wall and a cover plate detachably connected to the perimeter shaft wall. Based on this system, the quick-installation and quick-dismantling sealing method can achieve underwater quick installation and dismantling, uses reusable materials, and can be reused. The system is permanent-temporary combined; a single modification can retain the entrance and exit passages, allowing for multiple uses later. However, this device cannot be used with different culverts; once installed, it is only applicable to that specific culvert. Not all culverts require continuous dredging, resulting in waste. Summary of the Invention

[0004] The purpose of this invention is to provide a quick-installation and quick-disassembly accordion-style culvert sealing and dredging system and its usage method that can quickly seal culverts, is easy to use, and is recyclable.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A quick-installation and quick-disassembly accordion-style culvert sealing and dredging system includes an accordion-style inflatable sealing device, a detachable sliding rail device located between the culvert and the sealing device, and an inflatable device connected to the sealing device.

[0007] The sealing device includes two driven piles and an accordion-style airbag located between the two driven piles. The accordion-style airbag completes the sealing operation after being inflated.

[0008] The slide rail device includes a slide rail that is fixedly connected to the upper end of the culvert outlet.

[0009] In a further technical solution of the present invention, the sealing device is slidably connected to the slide rail device and achieves the sealing of the culvert by inflating and deflating air.

[0010] A further technical solution of the present invention is that the lower end of the driven pile is provided with a driven foot for use in the silt at the bottom of the culvert;

[0011] Alternatively, several telescopic rods may be provided between the two driven piles;

[0012] Alternatively, sealing strips may be provided on the sides of the two driven piles that are far apart from each other;

[0013] Alternatively, the accordion-style airbag may have an inflation port.

[0014] In a further technical solution of the present invention, the upper end of the driven pile is provided with a slider connected to the slide rail, the slider on any one of the driven piles is fixedly connected to the slide rail by bolts, and the slider of the other driven pile is slidably connected to the slide rail.

[0015] In a further technical solution of the present invention, the slide rail is provided with mounting holes for fixing the slide rail to the culvert.

[0016] In a further technical solution of the present invention, the inflation device is an air pump or an inflation machine, and the inflation device is connected to the inflation hole for inflating or deflating the bellows-type airbag.

[0017] A further technical solution of the present invention also includes a dredging device;

[0018] The dredging device includes a conveying cylinder, one end of which is a sealed structure. A conveying motor is connected to the sealed end of the conveying cylinder by screws. The output shaft of the conveying motor passes through the conveying cylinder and is connected to a material conveying shaft via a coupling. Material conveying spiral blades are welded onto the material conveying shaft. A top unloading push rod is connected to one side wall of the conveying cylinder by screws. A discharge pipe is fixedly connected to the conveying cylinder and the top unloading push rod at a relative position. A pusher block is fixedly connected to the telescopic end of the top unloading push rod after passing through the conveying cylinder.

[0019] The pusher block has a U-shaped structure, and the outer dimensions of the pusher block are smaller than the inner dimensions of the discharge pipe.

[0020] In a further technical solution of the present invention, the bottom end of the conveying cylinder is hinged with a bottom movable baffle by a pin, and support rods are welded to both sides of the top end of the conveying cylinder;

[0021] The bottom end of the conveying shaft is provided with a feeding shaft, which is connected to the conveying shaft by a universal coupling. Feeding spiral blades are welded around the periphery of the feeding shaft, and the top of the bottom movable baffle is located below the feeding spiral blades and has an arc-shaped structure.

[0022] In a further technical solution of the present invention, an inner sealing gasket is bonded to the inner wall of the conveying cylinder, and the conveying cylinder and the conveying spiral blades are rotatably and slidably sealed and connected through the inner sealing gasket.

[0023] The inner sealing gasket is made of rubber, and the conveying motor is a geared motor.

[0024] The method of using a quick-installation and quick-disassembly accordion-style culvert sealing and dredging system includes the following steps:

[0025] (1) Install slide rail device

[0026] Place the slide rail on the upper part of the culvert opening and use bolts to fix the slide rail to the culvert opening;

[0027] (2) Install sealing device

[0028] Two driven piles are placed on the slide rail by sliders, and one of the driven piles is fixed on the slide rail by sliders. The driven pile foot is then sunk into the silt.

[0029] (3) Accordion-style airbag inflation

[0030] Start the air inflator to inflate the airbag. As the airbag inflates, the sinking pile moves along the slide rail and gradually seals the culvert opening until the culvert is completely sealed.

[0031] (4) Dredging

[0032] During sludge removal, the sludge removal device is placed at the discharge outlet of the culvert using a support rod. The conveying motor is then connected to an external controller. During operation, when the sludge inside the culvert reaches the bottom of the device, the conveying motor starts. The power of the conveying shaft is transmitted to the feeding shaft via a universal coupling, which in turn drives the feeding shaft and the conveying screw blades to rotate. This allows the sludge at the bottom to be conveyed to the bottom of the conveying cylinder, improving the conveying efficiency of the cylinder. The conveying shaft then drives the feeding screw blades to rotate, conveying the sludge to the discharge pipe. The top unloading push rod moves the U-shaped push block, pushing the sludge from the conveying cylinder to the discharge pipe. The top unloading push rod cycles continuously, ensuring rapid sludge discharge.

[0033] The beneficial effects of the quick-installation and quick-disassembly accordion-style culvert sealing and dredging system and its usage method of the present invention are as follows:

[0034] This invention is based on an accordion-style inflatable airbag structure, enabling rapid inflation and deflation for quick installation and removal of culvert sealing. The fixed track to the culvert ensures that the accordion airbag moves along the track during inflation, preventing the airbag from being blown open by water flow. After use, the track can be removed and reused for other culverts. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the air-filled sealing device according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the venting structure of the sealing device according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the slide rail device according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the dredging device according to an embodiment of the present invention;

[0039] Figure 5 This is a cross-sectional view of the dredging device according to an embodiment of the present invention;

[0040] Figure 6 This is a view of the material pushing block portion of the dredging device according to an embodiment of the present invention;

[0041] Figure 7 This is a left view of the bottom movable baffle in the dredging device according to an embodiment of the present invention;

[0042] In the picture:

[0043] 100. Sealing device; 300. Inflating device;

[0044] 101. Sinking pile; 102. Accordion-style airbag; 103. Sinking foot; 104. Telescopic rod; 105. Sealing strip; 106. Inflation hole; 107. Sliding block;

[0045] 201. Slide rail;

[0046] 1. Conveying cylinder; 2. Top unloading push rod; 3. Discharge pipe; 4. Conveying motor; 5. Support rod; 6. Bottom movable baffle; 7. Feeding shaft; 8. Feeding spiral blade; 9. Conveying shaft; 10. Conveying spiral blade; 11. Inner sealing gasket; 12. Pushing block; 13. Universal coupling. Detailed Implementation

[0047] 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.

[0048] Example 1:

[0049] Please see Figure 1-3A bellows-type sealing and dredging system for culverts includes a bellows-type inflatable sealing device 100, a detachable sliding rail device disposed between the culvert and the sealing device 100, and an inflation device 300 connected to the sealing device 100.

[0050] The sealing device 100 includes two driven piles 101 and an accordion-style airbag 102 located between the two driven piles 101. After the accordion-style airbag 102 is inflated, it seals the culvert. The lower end of each driven pile 101 is provided with a sinking foot 103 for sinking the driven pile 101 into the silt at the bottom of the culvert. Several telescopic rods 104 are provided between the two driven piles 101. When the accordion-style airbag 102 is inflated, the two driven piles 101 move away from each other, and the telescopic rods 104 extend to ensure the strength of the entire sealing device 100 and prevent it from being damaged by water flow. Sealing strips 105 are provided on the side of each of the two driven piles 101 that are far apart, for sealing the gaps on both sides of the culvert. The accordion-style airbag 102 is provided with an inflation hole 106.

[0051] The slide rail device 100 includes a slide rail 201 fixedly connected to the upper end of the culvert outlet. The upper end of each driven pile 101 is provided with a slider 107 connected to the slide rail 201. The slider 107 on any one of the driven piles 101 is fixedly connected to the slide rail 201 by bolts, while the slider 107 on the other driven pile 101 is slidably connected to the slide rail 201. The slide rail 201 is provided with mounting holes for fixing the slide rail 201 to the culvert.

[0052] The inflation device 300 is an air pump or an inflation machine. The inflation device is connected to the inflation hole and is used to inflate or deflate the bellows-type airbag 102.

[0053] The components of this device are connected by bolts, and the dimensions are adjustable.

[0054] Example 2:

[0055] Please see Figure 1-7 The similarities between this implementation and the embodiments will not be repeated here. The difference is that, in order to achieve a further solution of the present invention, a dredging device is also included.

[0056] The system includes a conveying cylinder 1, one end of which is a sealed structure. A conveying motor 4 is connected to the sealed end of the conveying cylinder 1 by screws. The output shaft of the conveying motor 4 passes through the conveying cylinder 1 and is connected to a material conveying shaft 9 by a coupling. Material conveying spiral blades 10 are welded onto the material conveying shaft 9. A top unloading push rod 2 is connected to one side wall of the conveying cylinder 1 by screws. A discharge pipe 3 is fixedly connected to the conveying cylinder 1 and the top unloading push rod 2 at opposite positions. A pusher block 12 is fixedly connected to the telescopic end of the top unloading push rod 2 after passing through the conveying cylinder 1.

[0057] During the sludge transport process using this conveying device, when the sludge is transported to the top discharge pipe 3, the top discharge pusher 2 can be activated to push the U-shaped pusher block 12 to move, pushing the sludge located in the discharge pipe 3 inside the conveying cylinder 1 out. The top discharge pusher 2 operates in a cycle, which can ensure the rapid discharge of sludge and effectively solve the problem of poor discharge caused by the sludge being too thick, thereby improving the sludge discharge efficiency.

[0058] The pusher block 12 has a U-shaped structure, and the outer dimensions of the pusher block 12 are smaller than the inner cavity dimensions of the discharge pipe 3, which ensures that the pusher block 12 can be inserted into the discharge pipe 3 to achieve active pushing of sludge.

[0059] The bottom of the conveying cylinder 1 is hinged with a bottom movable baffle 6 by a pin. Support rods 5 are welded on both sides of the top of the conveying cylinder 1. The bottom of the conveying shaft 9 is provided with a feeding shaft 7. The feeding shaft 7 is connected to the conveying shaft 9 by a universal coupling 13. Feeding spiral blades 8 are welded around the feeding shaft 7. The top of the bottom movable baffle 6 is located below the feeding spiral blades 8 and has an arc-shaped structure.

[0060] The power of the conveying shaft 9 is transmitted to the feeding shaft 7 through the universal coupling 13, which in turn drives the feeding shaft 7 and the conveying screw blades 8 to rotate, so as to transport the sludge at the bottom to the bottom of the conveying cylinder 1 and improve the conveying efficiency of the conveying cylinder 1.

[0061] An inner sealing gasket 11 is bonded to the inner wall of the conveying cylinder 1, and the conveying cylinder 1 and the conveying spiral blade 10 are connected by rotation and sliding sealing through the inner sealing gasket 11. The inner sealing gasket 11 can play a sealing role and simultaneously avoid the problem of friction and wear between the conveying spiral blade and the inner wall of the conveying cylinder 1 when the conveying spiral blade rotates.

[0062] In this embodiment, the inner sealing gasket 11 is made of rubber, and the conveying motor 4 is a geared motor.

[0063] Example 3:

[0064] Please see Figure 1-7 ,

[0065] A method for using a bellows-style sealing and dredging system for culverts, comprising the following steps:

[0066] (1) Install slide rail device

[0067] Place the fixing bracket 201 on the upper part of the culvert and use bolts to fix the slide rail 201 to the culvert opening;

[0068] (2) Install sealing device

[0069] The driven pile 101 is mounted on the slide rail 201 via a slider, and another driven pile is fixed on the slide rail 201. The driven foot 103 is then driven into the silt.

[0070] (3) Accordion-style airbag inflation

[0071] Start the air inflator to inflate the airbag. As the airbag inflates, the sinking pile 101 moves along the slide rail 201 and gradually seals the culvert opening until the culvert is completely sealed.

[0072] (4) Dredging

[0073] The sludge removal device is placed at the sewage outlet of the culvert via the support rod 5. Then, the conveying motor 4 is connected to an external controller. During operation, when the sludge inside the culvert is cleaned to the bottom of the device, the conveying motor 4 starts. The power of the conveying shaft 9 is transmitted to the feeding shaft 7 via the universal coupling 13, which in turn drives the feeding shaft 7 and the conveying screw blades 8 to rotate. This allows the sludge at the bottom to be conveyed to the bottom of the conveying cylinder 1, improving the conveying efficiency of the conveying cylinder 1. Then, the conveying shaft 9 drives the conveying screw blades 10 to rotate, conveying the sludge to the discharge pipe 3. The top unloading push rod 2 can be activated to push the U-shaped push block 12 to move, pushing the sludge inside the conveying cylinder 1 located at the discharge pipe 3. The top unloading push rod 2 operates cyclically, ensuring rapid discharge of the sludge. This effectively solves the problem of poor discharge caused by thick sludge and improves the sludge discharge efficiency.

[0074] 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 quick-installation and quick-disassembly accordion-style culvert sealing and dredging system, characterized in that: Includes a bellows-type inflatable sealing device, a detachable sliding rail device located between the culvert and the sealing device, and an inflatable device connected to the sealing device; The sealing device includes two driven piles and an accordion-style airbag located between the two driven piles. The accordion-style airbag completes the sealing operation after being inflated. The slide rail device includes a slide rail that is fixedly connected to the upper end of the culvert outlet; Several telescopic rods are installed between the two driven piles; It also includes dredging equipment; The dredging device includes a conveying cylinder, one end of which is a sealed structure. A conveying motor is connected to the sealed end of the conveying cylinder by screws. The output shaft of the conveying motor passes through the conveying cylinder and is connected to a material conveying shaft via a coupling. Material conveying spiral blades are welded onto the material conveying shaft. A top unloading push rod is connected to one side wall of the conveying cylinder by screws. A discharge pipe is fixedly connected to the conveying cylinder and the top unloading push rod at a relative position. A pusher block is fixedly connected to the telescopic end of the top unloading push rod after passing through the conveying cylinder. The bottom end of the conveying cylinder is hinged to a bottom movable baffle by a pin, and support rods are welded to both sides of the top end of the conveying cylinder. The bottom end of the conveying shaft is provided with a feeding shaft, and the feeding shaft is connected to the conveying shaft by a universal coupling. Feeding spiral blades are welded around the periphery of the feeding shaft, and the top of the bottom movable baffle is located below the feeding spiral blades and has an arc-shaped structure. An inner sealing gasket is bonded to the inner wall of the conveying cylinder, and the conveying cylinder and the conveying spiral blades are connected by rotation and sliding sealing through the inner sealing gasket. The inner sealing gasket is made of rubber, and the conveying motor is a geared motor.

2. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 1, characterized in that: The sealing device achieves the sealing of the culvert by sliding connection with the slide rail device and by inflating and deflating air.

3. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 1, characterized in that: The lower end of the driven pile is equipped with a sinking foot for use in the silt at the bottom of the culvert.

4. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 3, characterized in that: Sealing strips are provided on the opposite sides of the two driven piles.

5. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 3, characterized in that: The accordion-style airbag is equipped with an inflation port.

6. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 1, characterized in that: The upper end of the driven pile is provided with a slider connected to the slide rail. The slider on any one of the driven piles is fixedly connected to the slide rail by bolts, and the slider of the other driven pile is slidably connected to the slide rail.

7. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 1, characterized in that: The slide rail is provided with mounting holes for fixing the slide rail to the culvert.

8. The quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to claim 5, characterized in that: The inflation device is an air pump or an inflation machine, and the inflation device is connected to the inflation port for inflating or deflating the bellows-type airbag.

9. A method of using a quick-installation and quick-disassembly accordion-type culvert sealing and dredging system according to any one of claims 1-8, characterized in that the steps are as follows: include: (1) Install slide rail device Place the slide rail on the upper part of the culvert opening and use bolts to fix the slide rail to the culvert opening; (2) Install sealing device Two driven piles are placed on the slide rail by sliders, and one of the driven piles is fixed on the slide rail by sliders. The driven pile foot is then sunk into the silt. (3) Inflation of accordion-style airbag Start the air inflator to inflate the airbag. As the airbag inflates, the sinking pile moves along the slide rail and gradually seals the culvert opening until the culvert is completely sealed. (4) Dredging During sludge removal, the sludge removal device is placed at the discharge outlet of the culvert using a support rod. The conveying motor is then connected to an external controller. During operation, when the sludge inside the culvert reaches the bottom of the device, the conveying motor starts. The power of the conveying shaft is transmitted to the feeding shaft via a universal coupling, which in turn drives the feeding shaft and the conveying screw blades to rotate. This allows the sludge at the bottom to be conveyed to the bottom of the conveying cylinder, improving the conveying efficiency of the cylinder. The conveying shaft then drives the feeding screw blades to rotate, conveying the sludge to the discharge pipe. The top unloading push rod moves the U-shaped push block, pushing the sludge from the conveying cylinder to the discharge pipe. The top unloading push rod cycles continuously, ensuring rapid sludge discharge.