Auxiliary drainage device for small-section tunnel
By designing a small-volume auxiliary drainage device in a small-section tunnel, and using double-layer pipelines and movable partition mechanisms to filter and discharge impurities in the sewage, the problem of tunnel drainage pipes is solved, and efficient and safe drainage effect is achieved.
Patent Information
- Application Number
- CN202421227048.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-31
AI Technical Summary
When a small-section tunnel passes through broken rock formations, groundwater development is caused by joint cracks. The sewage in the tunnel is often accompanied by a large amount of impurities, which can easily block the drainage pipes, which is not conducive to the normal drainage of the tunnel and cause construction safety hazards.
A small-volume auxiliary drainage device was designed, adopting a double-layer pipeline design and a movable partition mechanism. When sewage enters the drainage pipe, most of the rock fragments and silt are first filtered, and impurities are introduced into the lower sewage pipe through the movable partition. , and use high-pressure water to quickly discharge impurities to ensure smooth drainage.
It effectively prevents drainage pipes from being blocked, ensures smooth drainage in tunnels, improves construction safety and space utilization, and is suitable for efficient drainage of small-section tunnels.
Smart Images
Figure CN222501811U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel drainage, in particular to an auxiliary drainage device for a small-section tunnel. Background Art
[0002] The West-East Gas Transmission Project is one of the important projects that promotes the adjustment of my country's energy structure and industrial structure, drives the common economic development of the eastern, central and western regions, improves the quality of life of people along the pipeline, and effectively controls air pollution. Taking the Hougou Tunnel, a control project of the Shaanxi section of the middle section of the West-East Gas Transmission Line III (Zhongwei-Ji'an) as the engineering background, the project is affected by the stratum, groundwater and structure, the geological conditions are poor, and there are many geological problems such as surrounding rock instability, soft rock deformation, joint-intensive belts, and joint fissure development. It is necessary to adopt theoretical research and field practice, engineering analogy, induction and summary and other research methods, and continuously study new technologies and construction processes to ensure the safe and normal construction of the tunnel, and form a comprehensive construction technology to achieve the goals of safe and reliable construction, excellent quality, construction period, obvious benefits, and environmental and water protection standards.
[0003] Small-section tunnels often have limited space, which makes it difficult for large engineering machinery to carry out construction, and the processes cannot be quickly connected. There is a limited safe distance between construction personnel and machinery. When crossing broken rock formations, groundwater develops due to joints and fissures. The sewage in the tunnel is often accompanied by a large amount of impurities, which can easily block the drainage pipes, hindering the normal drainage of the tunnel and posing a great threat to normal construction and tunnel structure safety. Utility Model Content
[0004] The purpose of the utility model is to provide an auxiliary drainage device for a small-section tunnel, which overcomes the problem in the prior art that when passing through broken rock strata, groundwater develops due to joints and fissures, and the sewage in the tunnel is often accompanied by a large amount of impurities, which easily blocks the drainage pipe, is not conducive to normal drainage of the tunnel, and poses a great hidden danger to normal construction and tunnel structure safety.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is:
[0006] An auxiliary drainage device for small-section tunnels is designed. A small-volume auxiliary drainage device is set between the water pump and the sewage pipe. When sewage enters the drainage pipe, most of the rock fragments, silt and other impurities are first filtered to ensure smooth drainage of the drainage pipe. The auxiliary drainage device adopts a small-volume, double-layer pipeline design. When draining, the middle movable partition can be opened to guide impurities into the lower sewage pipe. Then, the impurities deposited in the lower sewage pipe are quickly discharged by closing the movable partition and using high-pressure water to ensure the normal operation of the auxiliary drainage device. The specific plan is as follows:
[0007] An auxiliary drainage device for a small-section tunnel comprises a drainage pipe, the bottom of which is connected to a sewage pipe, a sewage inlet is provided at the left end of the sewage pipe, and a sewage outlet is provided at the right end of the sewage pipe;
[0008] Three groups of movable baffles flipped to the right are equidistantly arranged at the connection between the sewage pipe and the drainage pipe, and the movable baffles are connected to an adjustment mechanism for adjusting the flip angle of the movable baffles;
[0009] Three layers of trash screens for filtering rock fragments are equidistantly arranged in the drainage pipe, and the three layers of trash screens are arranged at different angles on the right side of the movable partition.
[0010] Preferably, three opening and closing grooves are equidistantly arranged at the bottom of the drain pipe, and the three groups of movable partitions are rotatably connected in the opening and closing grooves through rotating shafts;
[0011] The front end of the rotating shaft is connected with a gear, and the gear matches the adjusting mechanism.
[0012] Preferably, the movable partition has a corrugated structure, the left end of the movable partition abuts against the left top of the opening and closing groove, and the right end of the movable partition abuts against the right bottom of the opening and closing groove.
[0013] Preferably, the adjustment mechanism comprises an adjustment gear rod, an adjustment gear disc, an adjustment knob, a gear key and a spring;
[0014] A mounting shell is provided at the front side of the drain pipe, an adjustment slot is provided at the right end of the mounting shell, and the adjustment gear rod is rotatably connected between the mounting shell and the adjustment slot and meshes with the gears respectively;
[0015] The adjusting toothed disc is located in the adjusting slot and connected to the adjusting toothed rod, and the adjusting knob is connected to the right side of the adjusting toothed disc;
[0016] There are two tooth keys, and the lower ends of the tooth keys are respectively hinged to the bottom of the adjustment slot, and the inner sides of the upper ends of the tooth keys are meshed with the adjustment toothed disc;
[0017] The spring is connected between the outer side of the upper end of the tooth key and the inner walls on both sides of the adjusting groove, and a rotation support button abutting against the spring is provided between the inner sides of the lower ends of the two tooth keys.
[0018] Preferably, the angles between the three layers of the trash grille and the upper inner wall of the drain pipe are 60°, 45° and 80° respectively.
[0019] Preferably, a drainage control valve is provided at the right end of the drainage pipe.
[0020] The beneficial effects of the utility model are:
[0021] 1. The utility model uses a small volume auxiliary drainage device to be arranged between the water pump and the sewage pipe. When the sewage enters the drainage pipe, most of the impurities such as rock fragments and mud and sand are first filtered out to ensure smooth drainage of the drainage pipe and prevent pipe blockage.
[0022] 2. Due to its small size, the auxiliary drainage device of the utility model is suitable for small-section tunnels where the space inside the tunnel is too narrow to set up a sedimentation tank; the double-layer pipeline design can introduce impurities into the lower sewage pipe through the open middle movable partition when draining water. When not draining water, the impurities deposited in the lower sewage pipe can be quickly discharged by closing the movable partition and using high-pressure water to ensure the normal operation of the auxiliary drainage device.
[0023] 3. Due to its small size, the auxiliary drainage device of the utility model can be flexibly set up in a small-section tunnel without occupying any tunnel use area. It can efficiently filter impurities in most sewage, ensure smooth drainage of the tunnel, effectively improve the road environment in the tunnel, improve the traffic efficiency of various construction machinery and the space utilization rate of small-section tunnels, and increase the safety factor of the construction process. It has far-reaching social value. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a front view of the utility model;
[0025] Figure 2 It is a right view of the utility model;
[0026] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;
[0027] Figure 4 for Figure 3 A partial enlarged schematic diagram of point C in the middle;
[0028] Figure 5 for Figure 2 Schematic diagram of the cross section at BB;
[0029] Figure 6 for Figure 5 A partial enlarged schematic diagram of point D in the middle;
[0030] Figure 7 It is a schematic diagram of the open state of the movable partition in the utility model.
[0031] In the figure: 1-drain pipe; 2-sewage pipe; 21-clean water inlet; 22-clean water outlet; 3-movable baffle; 4-adjusting mechanism; 41-adjusting gear rod; 42-adjusting gear plate; 43-adjusting knob; 44-tooth key; 45-spring; 46-swing support knob; 5-gear; 51-rotating shaft; 6-trash screen; 7-mounting shell; 71-adjusting slot; 72-fixing plate; 8-drain control valve. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.
[0033] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present invention. However, it is apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, in order to avoid confusing the present invention, well-known structures, circuits, materials or methods are not specifically described.
[0034] Throughout the specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. In addition, it will be appreciated by those of ordinary skill in the art that the figures provided herein are for illustrative purposes and that the figures are not necessarily drawn to scale. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0035] In the description of the present invention, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the scope of protection of the present invention.
[0036] like Figure 1-7As shown, the utility model provides a small-section tunnel auxiliary drainage device, including a drainage pipe 1, a sewage pipe 2 is connected to the bottom of the drainage pipe 1, and the sewage pipe 2 can deposit impurities such as rock fragments filtered out of sewage during the discharge of sewage, a sewage cleaning water inlet 21 is provided at the left end of the sewage pipe 2 for connecting high-pressure water, and a sewage cleaning water outlet 22 is provided at the right end of the sewage pipe 2, and the deposited impurities are discharged therefrom by the impact of high-pressure water, and three groups of movable baffles 3 flipped to the right are equidistantly provided at the connection between the sewage pipe 2 and the drainage pipe 1, and impurities such as rock fragments can be filtered into the sewage pipe 2 on the lower side during the drainage process, and the movable baffle 3 is connected to an adjusting mechanism 4 for adjusting the flipping angle of the movable baffle 3, so as to facilitate the control of the opening and closing state of the movable baffle 3, and three layers of trash grilles 6 for filtering rock fragments are equidistantly provided in the drainage pipe 1, and the three layers of trash grilles 6 are respectively arranged on the right side of the movable baffle 3 at different angles, and the trash grilles 6 can filter out impurities such as rock fragments in sewage layer by layer to prevent the drainage pipe 1 from being blocked.
[0037] In the above scheme, three opening and closing grooves 12 are equidistantly arranged at the bottom of the drain pipe 1, and three sets of movable partitions 3 are respectively rotatably connected in the opening and closing grooves 12 through rotating shafts 51. The front end of the rotating shaft 51 is connected to a gear 5, and the gear 5 matches the adjustment mechanism 4.
[0038] As an optimized technical solution of the utility model, the opening and closing of the opening and closing grooves 12 can be controlled by flipping the three sets of movable partitions 3, so that the discharge of sewage and deposited impurities can be achieved in different states, so as to ensure smooth drainage of the tunnel.
[0039] In the above scheme, the movable partition 3 has a corrugated structure, the left end of the movable partition 3 abuts against the left top of the opening and closing groove 12, and the right end of the movable partition 3 abuts against the right bottom of the opening and closing groove 12.
[0040] As an optimization technical solution of the utility model, the corrugated structure of the movable partition 3 can make the abutment relationship between the two ends of the movable partition 3 and the opening and closing groove 12 more closely fitted, making the opening and closing of the opening and closing groove 12 smoother.
[0041] In the above scheme, the adjustment mechanism 4 includes an adjustment gear rod 41, an adjustment toothed disc 42, an adjustment knob 43, a tooth key 44 and a spring 45. A mounting shell 7 is provided on the front side of the drain pipe 1. An adjustment groove 71 is provided on the right end of the mounting shell 7. The adjustment gear rod 41 is rotatably connected between the mounting shell 7 and the adjustment groove 71, and is meshed with the gear 5 respectively. The adjustment toothed disc 42 is located in the adjustment groove 71 and is connected to the adjustment gear rod 41. The adjustment knob 43 is connected to the right side of the adjustment toothed disc 42. There are two tooth keys 44, and the lower ends are respectively hinged at the bottom of the adjustment groove 71. The inner side of the upper end of the tooth key 44 is meshed with the adjustment toothed disc 42. The spring 45 is connected between the outer side of the upper end of the tooth key 44 and the inner walls on both sides of the adjustment groove 71. A rotation support button 46 abutting against it is provided between the inner sides of the lower ends of the two tooth keys 44.
[0042] As an optimized technical solution of the utility model, the adjusting gear rod 41 is fixed in the mounting shell 7 through the fixing plate 72. The tooth key 44 abutting against the adjusting toothed disc 42 is stretched by twisting the rotary support button 46, and the spring 45 is compressed. The adjusting gear rod 41 is driven to rotate through the adjusting knob 43, thereby driving the gear 5 to rotate, and then driving the movable partition 3 to flip through the rotating shaft 51. When the movable partition 3 is flipped to a suitable angle, the rotary support button 43 is released. Under the action of the restoring elastic force of the spring 45, the inner side of the upper end of the tooth key 44 abuts against the adjusting toothed disc 42, thereby preventing the adjusting gear rod 41 from rotating accidentally, so that the angle of the movable partition 3 remains stable after flipping.
[0043] In the above solution, the angles between the three-layer trash screen 6 and the upper inner wall of the drain pipe 1 are 60°, 45° and 80° respectively.
[0044] As an optimized technical solution of the utility model, three layers of trash screens 6 with different angles filter out impurities such as rock fragments in the discharged sewage layer by layer, so as to prevent such impurities from clogging the drainage pipe 1 and ensure the smooth flow of the drainage pipe.
[0045] In the above scheme, a drainage control valve 8 is provided at the right end of the drainage pipe 1 to control the on and off of the drainage pipe 1.
[0046] Specific implementation cases:
[0047] When passing through broken rock formations, due to the development of groundwater caused by joints and fissures, the sewage in the tunnel is often accompanied by a large amount of impurities, which can easily clog the drainage pipe and is not conducive to normal drainage of the tunnel. For this reason, the auxiliary drainage device is used. During use, the tooth key 44 abutting on the adjusting toothed disc 42 can be opened by twisting the rotation support button 46, the spring 45 is compressed, and the adjusting gear rod 41 is driven to rotate through the adjusting knob 43, thereby driving the gear 5 to rotate, and then the movable partition 3 is driven to flip through the rotating shaft 51.
[0048] When the movable partition 3 is flipped to a suitable angle, the opening and closing groove 12 is opened, and the rotating support button 43 is loosened. Under the action of the restoring elastic force of the spring 45, the inner side of the upper end of the tooth key 44 is pressed against the adjusting toothed disc 42, so that the adjusting toothed disc 42 is completely stuck, thereby preventing the adjusting gear rod 41 from rotating accidentally, so that the angle of the movable partition 3 remains stable after flipping.
[0049] At that time, the drain pipe 1 can be opened by opening the drain control valve 8, and then when sewage passes through the drain pipe 1, impurities such as rock fragments contained in the sewage will be blocked by the trash screens 6 at different angles and the flipped movable partitions 3, and the blocked impurities such as rock fragments will be introduced into the sewage pipe 2 on the lower side of the drain pipe 1, so as to avoid blockage caused by impurities such as rock fragments deposited in the drain pipe 1 and improve the smoothness of the drain pipe.
[0050] When the drain pipe 1 does not need to drain, the opening and closing groove 12 can be closed by flipping the middle movable partition 3, and high-pressure water can be connected to the sewage inlet 21. The impurities introduced into the lower sewage pipe 2 can be quickly discharged through the sewage outlet 22 using high-pressure water to ensure the normal operation of the auxiliary drainage device.
[0051] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. An auxiliary drainage device for a small-section tunnel, comprising a drainage pipe (1), characterized in that: The bottom of the drainage pipe (1) is connected to a sewage pipe (2), the left end of the sewage pipe (2) is provided with a sewage water inlet (21), and the right end of the sewage pipe (2) is provided with a sewage water outlet (22); Three groups of movable baffles (3) that flip to the right are equidistantly arranged at the connection between the sewage pipe (2) and the drainage pipe (1); the movable baffles (3) are connected to an adjustment mechanism (4) for adjusting the flip angle of the movable baffles (3); Three layers of trash screens (6) for filtering rock fragments are equidistantly arranged in the drainage pipe (1), and the three layers of trash screens (6) are arranged at different angles on the right side of the movable partition (3).
2. The small-section tunnel auxiliary drainage device according to claim 1, characterized in that: The bottom of the drainage pipe (1) is provided with three opening and closing grooves (12) at equal intervals, and the three groups of movable partitions (3) are rotatably connected in the opening and closing grooves (12) via rotating shafts (51); A gear (5) is connected to the front end of the rotating shaft (51), and the gear (5) matches the adjusting mechanism (4).
3. The small-section tunnel auxiliary drainage device according to claim 2, characterized in that: The movable partition (3) has a corrugated structure, the left end of the movable partition (3) abuts against the left top of the opening and closing groove (12), and the right end of the movable partition (3) abuts against the right bottom of the opening and closing groove (12).
4. The small-section tunnel auxiliary drainage device according to claim 2, characterized in that: The adjustment mechanism (4) comprises an adjustment gear rod (41), an adjustment gear disc (42), an adjustment knob (43), a gear key (44) and a spring (45); The front side of the drainage pipe (1) is provided with a mounting shell (7), the right end of the mounting shell (7) is provided with an adjustment slot (71), and the adjustment gear rod (41) is rotatably connected between the mounting shell (7) and the adjustment slot (71), and is respectively meshed with the gear (5); The adjusting toothed disc (42) is located in the adjusting slot (71) and is connected to the adjusting toothed rod (41); the adjusting knob (43) is connected to the right side of the adjusting toothed disc (42); There are two tooth keys (44), and the lower ends of the tooth keys (44) are respectively hinged to the bottom of the adjustment slot (71), and the inner sides of the upper ends of the tooth keys (44) are meshed with the adjustment toothed disc (42); The spring (45) is connected between the outer side of the upper end of the tooth key (44) and the inner walls on both sides of the adjustment groove (71), and a rotation support button (46) abutting against the lower ends of the two tooth keys (44) is provided between the inner sides.
5. The small-section tunnel auxiliary drainage device according to claim 1, characterized in that: The included angles between the three layers of the trash screen (6) and the upper inner wall of the drain pipe (1) are 60°, 45° and 80° respectively.
6. The small-section tunnel auxiliary drainage device according to claim 1, characterized in that: The right end of the drainage pipe (1) is provided with a drainage control valve (8).