Tunnel construction drainage device

Abstract

The application relates to the technical field of tunnel construction, and discloses a tunnel construction drainage device, which solves the problem that the cleaning mechanism of the existing drainage device has a complex structure, the complex matching structure is prone to faults in operation, and the cleaning of the silt is ineffective; the water flow drives the rotary drum to rotate, thereby providing power for the rotation of the filter cover; the driving mode has a circulating operation path, has no redundant components or complex interaction, has a low failure rate, is convenient for long-term stable operation in a complex underwater environment, the rotating filter cover and the non-porous part of the surface cooperate with the inclined shelf to work, the silt adsorbed on the surface of the filter cover is continuously cleaned, the filter cover keeps the water filtering efficiency, the suction assembly enables the suction cover to generate suction force to suck the cleaned silt, the silt is prevented from being active near the filter cover, and the workload of the inclined shelf for cleaning the silt is increased; the movement path of the above structure is circular, the operation process is orderly, the regularity is high, and the drainage operation is suitable for stable operation in a complex underwater environment.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction technology, specifically to a tunnel construction drainage device. Background Technology

[0002] During tunnel construction, drainage operations are necessary when water seepage occurs to ensure the smooth progress of tunnel construction. Drainage devices must be used during drainage operations.

[0003] The existing publication number "CN118088262B" discloses "a construction drainage device for railway tunnels", which includes a U-shaped baffle, a water guiding mechanism, two filtration and cleaning mechanisms, a collection mechanism, and a water pump. The water guiding mechanism and the collection mechanism are both set on the U-shaped baffle. The water guiding mechanism includes two symmetrically arranged water suction components and pipes. When the filter screen mounted on one of the water suction components encounters mud and sand blockage, the other water suction component is activated to clean the blocked filter screen, so that the drainage efficiency is not affected when the drainage device encounters blockage during operation.

[0004] The aforementioned patents and drainage devices in the same field have cleaning mechanisms for real-time (during operation) cleaning of the filter screen to remove silt and sand. These mechanisms are complex and cumbersome, with high coupling between components. For example, in the aforementioned patent, the two suction components require a dedicated cleaning structure to detect and clean blockages on their surfaces. This cleaning structure involves the coordinated operation of components such as motors, electric actuators, and electric control valves. Furthermore, the two suction components work alternately, which further increases the complexity of the coordination between the electric structures. In the drainage operation environment inside tunnels, complex coordination structures often mean a significant increase in the failure rate. Once a failure occurs, the silt and sand cleaning function will fail, thereby affecting the normal operation of the entire drainage system. Summary of the Invention

[0005] The purpose of this invention is to provide a drainage device for tunnel construction, which solves the problems of existing drainage devices having complex cleaning mechanisms, high coupling between components, and complex cooperation structures that are prone to failure during operation, resulting in the failure of cleaning mud and sand.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tunnel construction drainage device, comprising a drive mechanism, wherein the inner side of the drive mechanism is provided with a rotating drum driven by water flow, and a connecting mechanism is provided on one side of the drive mechanism to connect with a pumping pipe, and one end of the pumping pipe is connected to an external pumping pump.

[0007] A filter cover is mounted on the side of the rotating drum away from the connecting mechanism. The filter cover rotates with the rotating drum, and the filter cover has a non-perforated portion on the side near the rotating drum.

[0008] The impurity removal mechanism includes an inclined baffle attached to the surface of the filter cover. The inclined baffle is fixedly mounted on one side of the drive mechanism to scrape the mud and sand adsorbed on the surface of the rotating filter cover and guide it to the non-porous part to interrupt the adsorption force.

[0009] The suction mechanism includes a suction hood located below the inclined baffle on one side of the rotating drum, a suction component driven by the rotating drum, and a filter sand bag connected to one side of the suction component. When the suction component works, the suction hood generates suction, which engages with the inclined baffle and the non-perforated part, and the scraped mud and sand are sucked into the filter sand bag.

[0010] As a further description of the above technical solution: the drive mechanism includes an outer cover, the rotating drum is assembled inside the outer cover by bearings, and blades are provided inside the rotating drum.

[0011] As a further description of the above technical solution: the filter cover is configured in the shape of a frustum, and its filter holes are opened on the arc surface of the filter cover.

[0012] As a further description of the above technical solution: the filter cover is provided with a post on the side near the rotating cylinder, and a docking hole for docking with the post is opened on one side of the rotating cylinder. The filter cover is fixedly assembled on one side of the rotating cylinder by a screw that penetrates to the inside, and a threaded hole for spiral connection with the screw is provided on one side of the rotating cylinder.

[0013] As a further description of the above technical solution: the impurity removal mechanism includes a support frame fixedly mounted on one side of the outer cover, the support frame covering the filter cover inside, and the inclined baffle fixedly mounted on the support frame and adapted to fit the surface of the filter cover.

[0014] As a further description of the above technical solution: the support frame surface is fitted with a partition, which separates the non-porous part from the filter holes on the surface of the filter cover in the side direction of the non-porous part.

[0015] As a further description of the above technical solution: the suction cup is fixedly assembled on one side of the partition, and its inlet is aligned with the end of the inclined baffle near the rotating cylinder. The suction cup is connected to the suction component through a pipe.

[0016] As a further description of the above technical solution: the suction component includes an assembly cover that is sealed and welded to the lower surface of the non-porous part, a channel impeller is rotatably assembled inside the assembly cover, a toothed ring B is provided on the outer arc surface of the channel impeller, and a toothed ring A that drives the toothed ring B is provided on the outer arc surface of the rotating drum.

[0017] As a further description of the above technical solution: the connecting mechanism includes a pipe joint that abuts on the outer cover of the driving mechanism, and a clamping cover that is fitted on one side of the pipe joint. The pipe joint includes a threaded end A that is spirally connected to the clamping cover, and a funnel cylinder that is fitted with the pumping pipe. The surface of the funnel cylinder is provided with a protruding ring. The clamping cover is spirally connected to the threaded end A through the inner threaded end B. One side of the clamping cover is a pressure cylinder that is adapted to the inclined surface of the funnel cylinder.

[0018] In summary, due to the adoption of the above technical solutions, the beneficial effects of this invention are as follows: The rotation of the rotating drum, driven by water flow, provides power for the rotation of the filter cover, eliminating the need for electric drive. The driving mode operates according to a fixed pattern, making it easy to predict and control. There are no redundant components or complex interactions, resulting in a low failure rate and facilitating long-term stable operation of the device in complex underwater environments. Simultaneously, the rotating filter cover and its non-porous surface work in conjunction with the inclined baffle to continuously clean and peel off the sediment adsorbed on the filter cover surface, maintaining the filter cover's filtration efficiency and the pump's drainage efficiency. The suction component driven by the rotating drum generates suction, drawing in the peeled sediment and transferring it to the filter sand net for storage, preventing sediment from accumulating near the filter cover and reducing the workload of the inclined baffle in cleaning sediment. The cyclical movement path of the above structure ensures orderly and regular operation, making it suitable for stable drainage operations in complex underwater environments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the impurity suction mechanism and its installation position structure according to the present invention;

[0022] Figure 4 This is an exploded view of the drive mechanism, filter cover, and impurity removal mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the internal structure of the rotating drum of the present invention;

[0024] Figure 6 This is an exploded schematic diagram of the getter removal mechanism of the present invention;

[0025] Figure 7 This is an exploded view of the connection mechanism of the present invention.

[0026] In the diagram: 10. Drive mechanism; 11. Outer cover; 12. Bearing; 13. Rotary drum; 131. Connecting hole; 132. Blade; 133. Threaded hole; 14. Gear ring A; 20. Filter cover; 21. Holeless part; 22. Screw; 23. Insert column; 30. Impurity removal mechanism; 31. Support frame; 32. Inclined baffle; 33. Partition plate; 40. Impurity suction mechanism; 41. Suction cover; 42. Suction assembly; 421. Assembly cover; 422. Channel impeller; 423. Gear ring B; 43. Filter sand bag; 50. Connecting mechanism; 51. Connecting pipe joint; 511. Threaded end A; 512. Funnel cylinder; 513. Protruding ring; 52. Pressing cover; 521. Threaded end B; 522. Pressure cylinder; 60. Pumping pipe. Detailed Implementation

[0027] 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.

[0028] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings.

[0029] Combination Figures 1-7 A tunnel construction drainage device includes a drive mechanism 10, which includes an outer cover 11 and a rotating cylinder 13. The rotating cylinder 13 is mounted inside the outer cover 11 via a bearing 12 to allow it to rotate with low friction within the outer cover 11. Blades 132 are provided inside the rotating cylinder 13. A connecting mechanism 50 is provided on one side of the drive mechanism 10 to connect to a pumping pipe 60. One end of the pumping pipe 60 is connected to an external pump. When the pump connected to the pumping pipe 60 is working, water flows at high speed through the inside of the rotating cylinder 13, impacting the surface of the blades 132 and causing the rotating cylinder 13 to rotate inside the outer cover 11. The power of the water flow during drainage drives the rotating cylinder 13, providing power to the subsequent filter cover 20 and suction mechanism 40. Their movements follow a fixed pattern, making them easy to predict and control. There are no redundant parts or complex interactions, greatly reducing the failure rate of the device during tunnel drainage construction and facilitating long-term stable operation of the device in complex underwater environments.

[0030] Combination Figures 2-4A filter cover 20 is installed on the side of the rotating drum 13 away from the connecting mechanism 50. A plug 23 is provided on the side of the filter cover 20 near the rotating drum 13. A docking hole 131 is opened on one side of the rotating drum 13 to mate with the plug 23. The filter cover 20 is fixedly installed on one side of the rotating drum 13 by a screw 22 that passes through to the inside. A threaded hole 133 is provided on one side of the rotating drum 13 to be spirally connected to the screw 22. Under the limiting action of the plug 23, the filter cover 20 rotates with the rotating drum 13. Water is pumped in by the water pump after passing through the filter cover 20. The mud and sand will be filtered and adsorbed on the surface of the filter cover 20. As it rotates, the rotation mode of the filter cover 20 with the rotating drum 13 is also fixed. There are no redundant parts, and it can operate stably for a long time.

[0031] The filter cover 20 is fixed to one side of the rotating cylinder 13 by a screw 22. After removing the screw 22, the filter cover 20 can be removed from one side of the rotating cylinder 13, which simplifies the installation and removal of the filter cover 20 and provides convenience for subsequent maintenance. The filter cover 20 has a non-perforated part 21 on the side near the rotating cylinder 13. The filter cover 20 is set in a frustum shape to reduce the volume of the outer end in order to adapt to the complex underwater environment. The filter holes of the filter cover 20 are opened on the arc surface of the filter cover 20.

[0032] Combination Figures 2-4 The impurity removal mechanism 30 includes a support frame 31 fixedly mounted on one side of the outer cover 11 and an inclined baffle 32 attached to the surface of the filter cover 20. The support frame 31 covers the filter cover 20 inside without contacting it. The support frame 31 and the surface of the filter cover 20 are spaced apart to allow the mud and sand adsorbed on the surface of the filter cover 20 to pass through. The distance between the support frame 31 and the surface of the filter cover 20 is set to be much larger than the diameter of common mud and sand particles to ensure that the scraped mud and sand can pass through smoothly. At the same time, the gap is small enough to effectively prevent larger stones from entering. In addition, the continuous rotation of the filter cover 20 and the flushing effect of the water flow also have a self-cleaning effect on fine particles that may enter the gaps, further avoiding the risk of jamming. The inclined baffle 32 is fixedly mounted on the support frame 31 and fits into the surface of the filter cover 20. The inclined baffle 32 scrapes the mud and sand adsorbed on the surface of the rotating filter cover 20 and guides it to the non-porous part 21, interrupting the adsorption force. The support frame 31 is equipped with a partition 33, which separates the non-porous part 21 from the filter holes on the surface of the filter cover 20 on the side of the non-porous part 21, so that the mud and sand that have left the surface of the filter cover 20 will not be adsorbed again by the nearby filter holes after the inclined baffle 32 cooperates with the non-porous part 21.

[0033] like Figure 2 , Figure 3As shown, the support frame 31 has the function of protecting the filter cover 20, and at the same time, the inclined baffle 32 mounted on it is close to the surface of the filter cover 20. When the surface of the filter cover 20 is not adsorbed with mud and sand, the filter cover 20 and the inclined baffle 32 do not have direct or indirect contact, so that the filter cover 20 can rotate with minimal resistance. When the rotating surface of the filter cover 20 is adsorbed with mud and sand, it will rotate with the surface of the filter cover 20 until it comes into contact with the inclined baffle 32 and is blocked by the inclined baffle 32. Since the inclined baffle 32 is set at an inclination, the mud and sand blocked by the inclined baffle 32 will automatically gather towards the non-porous part 21. When the mud and sand pushed by the inclined baffle 32 passes through the non-porous part 21 area, the non-porous part 21 on the surface of the filter cover 20 will no longer have an adsorption force on the mud and sand, so the mud and sand can fall off by themselves.

[0034] The water flow drives the rotating drum 13 to rotate, providing power for the rotation of the filter cover 20. This eliminates the need for electric drive and simplifies the driving method, avoiding the high failure rate caused by complex and cumbersome structures. At the same time, the rotating filter cover 20 works in conjunction with the inclined baffle 32 to clean and peel off the mud and sand adsorbed on the surface of the filter cover 20.

[0035] It is worth mentioning that since the filter cover 20 is constantly rotating, the inclined baffle 32 cleans the surface of the filter cover 20 continuously, which further ensures that the filter cover 20 maintains sufficient water filtration efficiency and the drainage efficiency of the pump at all times.

[0036] Combination Figures 3-6 The suction mechanism 40 includes a suction hood 41 disposed below the inclined baffle 32 on one side of the rotating drum 13, a suction assembly 42 driven by the rotating drum 13, and a filter sand bag 43 connected to one side of the suction assembly 42. The suction hood 41 is fixedly mounted on one side of the partition 33, and its inlet is aligned with one end of the inclined baffle 32 near the rotating drum 13. The suction hood 41 is connected to the suction assembly 42 through a pipe.

[0037] The suction assembly 42 includes a mounting cover 421 sealed and welded to the lower surface of the non-porous portion 21. A channel impeller 422 is rotatably mounted inside the mounting cover 421. A gear ring B423 is provided on the outer arc surface of the channel impeller 422. A gear ring A14 is provided on the outer arc surface of the rotating drum 13 to drive the gear ring B423. The rotation of the rotating drum 13 drives the channel impeller 422 to rotate, causing the suction cover 41 to draw water inward and generate suction. When the non-porous portion 21 is acted upon by the inclined baffle 32, the mud is peeled off. When sand is being collected, the silt is sucked in by the suction hood 41 and transferred to the sand filter bag 43 for storage, thereby preventing the silt from being active near the filter hood 20 and increasing the workload of the inclined baffle 32 in cleaning the silt. The channel impeller 422 has a smooth blade structure and a large spacing. The centrifugal force generated by its high-speed rotation can quickly throw the sucked silt particles off the impeller surface and smoothly discharge them into the sand filter bag 43 with the water flow, thereby effectively avoiding the accumulation and adhesion of silt on the impeller.

[0038] Furthermore, the gear ring A14 and gear ring B423 can be connected by a transmission gearbox (not shown in the figure) to increase the rotation speed of the channel impeller 422, thereby increasing the suction force at the inlet of the suction shroud 41. This allows the mud and sand that fall off the non-perforated part 21 to be smoothly sucked into the suction shroud 41. The rotation mode of the gear ring A14 driving the gear ring B423 is also fixed. At the same time, the meshing of the gear ring A14 and the gear ring B423 is hidden inside the outer cover 11, so that it does not come into contact with the complex underwater environment, thus satisfying the absorption of mud and sand while reducing the failure rate of operation.

[0039] Combination Figure 1 , Figure 7 The connecting mechanism 50 includes a pipe connector 51 mating to the outer cover 11 of the drive mechanism 10, and a clamping cover 52 fitted on one side of the pipe connector 51. The pipe connector 51 includes a threaded opening A511 that is spirally connected to the clamping cover 52, and a funnel cylinder 512 that is fitted to the water pumping pipe 60. The surface of the funnel cylinder 512 is provided with a protruding ring 513. The clamping cover 52 is spirally connected to the threaded opening A511 through the inner threaded opening B521. One side of the clamping cover 52 is a pressure cylinder 522 that is adapted to the inclined surface of the funnel cylinder 512. By fitting the water pumping pipe 60 onto the outer surface of the funnel cylinder 512 and then tightening the clamping cover 52 onto one side of the pipe connector 51, the funnel cylinder 512 and the pressure cylinder 522 cooperate to press the wall of the water pumping pipe 60. The protruding ring 513 further increases the squeezing force on the pipe wall to prevent the water pumping pipe 60 from falling off the funnel cylinder 512.

[0040] Working principle: Activating the pump connected to one side of the pumping pipe 60 causes water to flow at high speed through the inside of the rotating drum 13, impacting the surface of the blades 132. This causes the drum 13 to rotate inside the outer cover 11. The rotation of the drum 13 drives the filter cover 20 to rotate in a fixed pattern. The sediment adsorbed on the surface of the filter cover 20 rotates with it and is then blocked by the inclined baffle 32 on one side of the filter cover 20. The blocked sediment automatically gathers towards the non-porous part 21 and loses its adsorption capacity when passing through the non-porous part 21. The force causes the sediment to fall off the surface of the filter cover 20. At the same time, the suction component 42 on the lower side of the drive mechanism 10 is driven by the rotating drum 13 in a fixed mode. The suction cover 41 sucks the sediment that has fallen off the non-porous part 21 into the filter sand bag 43 for storage, thereby preventing the sediment from being active near the filter cover 20 and increasing the workload of the inclined baffle 32 in cleaning sediment. The movement path of the structure is cyclical, and the operation process is orderly and regular, which is suitable for stable operation of drainage operations in complex underwater environments.

[0041] The above are merely preferred embodiments 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 drainage device for tunnel construction, characterized in that: Includes a drive mechanism (10), the inner side of which is provided with a rotating drum (13) driven by water flow, and a connecting mechanism (50) on one side of the drive mechanism (10) connected to a water pumping pipe (60), one end of which is connected to an external pumping pump; A filter cover (20) is mounted on the side of the rotating drum (13) away from the connecting mechanism (50). The filter cover (20) rotates with the rotating drum (13). The filter cover (20) has a non-porous part (21) on the side of the rotating drum (13). The impurity removal mechanism (30) includes a slanted baffle (32) attached to the surface of the filter cover (20). The slanted baffle (32) is fixedly mounted on one side of the drive mechanism (10) to scrape the mud and sand adsorbed on the surface of the rotating filter cover (20) and guide it to the non-porous part (21) to cut off the adsorption force. The suction mechanism (40) includes a suction hood (41) located below the inclined baffle (32) on one side of the rotating drum (13), a suction assembly (42) driven by the rotating drum (13), and a filter sand net (43) connected to one side of the suction assembly (42). The suction assembly (42) works to make the suction hood (41) generate suction, which engages the inclined baffle (32) with the non-porous part (21), and the scraped mud and sand are sucked into the filter sand net (43). The drive mechanism (10) includes an outer cover (11), and the rotating drum (13) is mounted inside the outer cover (11) via a bearing (12). The rotating drum (13) has blades (132) inside. The filter cover (20) is provided with a post (23) on the side near the rotating cylinder (13). The rotating cylinder (13) has a docking hole (131) on one side that docks with the post (23). The filter cover (20) is fixedly assembled on one side of the rotating cylinder (13) by a screw (22) that passes through to the inside. The rotating cylinder (13) has a threaded hole (133) that is helically connected to the screw (22) on one side. The impurity removal mechanism (30) includes a support frame (31) fixedly mounted on one side of the outer cover (11), the support frame (31) covering the filter cover (20) inside, and the inclined bracket (32) fixedly mounted on the support frame (31) and adapted to fit the surface of the filter cover (20). The support frame (31) is fitted with a partition (33), which separates the non-porous part (21) from the filter holes on the surface of the filter cover (20) on the side of the non-porous part (21); The suction cup (41) is fixedly mounted on one side of the partition (33), and its inlet is aligned with the end of the inclined baffle (32) near the rotating drum (13). The suction cup (41) is connected to the suction assembly (42) through a pipe. The suction component (42) includes a mounting cover (421) that is sealed and welded to the lower surface of the non-porous part (21). A channel impeller (422) is rotatably mounted inside the mounting cover (421). A toothed ring B (423) is provided on the outer arc surface of the channel impeller (422). A toothed ring A (14) that drives the toothed ring B (423) is provided on the outer arc surface of the rotating drum (13). The connecting mechanism (50) includes a pipe connector (51) mating to the outer cover (11) of the drive mechanism (10), and a clamping cover (52) fitted on one side of the pipe connector (51). The pipe connector (51) includes a threaded opening A (511) that is spirally connected to the clamping cover (52), and a funnel tube (512) that is fitted to the water pump (60). The surface of the funnel tube (512) is provided with a protruding ring (513). The clamping cover (52) is spirally connected to the threaded opening A (511) through the inner threaded opening B (521). One side of the clamping cover (52) is a pressure cylinder (522) adapted to the inclined surface of the funnel tube (512).

2. A tunnel construction drainage device according to claim 1, characterized in that: The filter cover (20) is configured in the shape of a frustum, and its filter holes are opened on the arc surface of the filter cover (20).

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