Waterproof drainage device for water conservancy tunnel construction

Abstract

This utility model relates to a waterproof drainage device for tunnel construction in water conservancy projects, including a drainage pipe, a servo motor fixedly installed at the top of the drainage pipe, a mud-water separation box set on one side of the drainage pipe, an isolation cover fixedly installed on the upper end of the mud-water separation box, a connecting plate hinged between the isolation cover and the drainage pipe, an adjusting cylinder rotatably installed on the right end of the mud-water separation box, a feed guide plate and a discharge guide plate respectively set on the left and right sides of the inner cavity of the mud-water separation box, and a discharge port set on the upper surface of the drainage pipe. The drainage pipe is equipped with an auger conveying assembly, and the servo motor is connected to the auger conveying assembly for transmission. The servo motor is used to drive the auger conveying assembly to rotate. This utility model achieves efficient and continuous conveying of mud-water mixture by setting up an auger conveying assembly in conjunction with an adjustable drainage pipe. After the mud-water is discharged through the discharge port, it is introduced into the rotating conical separation cylinder through a V-shaped feed guide plate to achieve rapid solid-liquid separation, and mud-water separation is carried out at the same time as drainage.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, specifically to a waterproof and drainage device for tunnel construction in water conservancy projects. Background Technology

[0002] During the construction of water conservancy tunnels, complex geological conditions often lead to problems such as abundant groundwater, fractured surrounding rock, and severe water leakage, resulting in frequent water accumulation and mud siltation at the construction site, which seriously affects the construction progress and operational safety. Therefore, timely and effective waterproofing and drainage are key to ensuring stable tunnel excavation and a safe construction environment. Common drainage methods often involve using submersible pumps or centrifugal pumps to directly pump out the mud-water mixture in the sump. In order to avoid clogging, filters or sedimentation structures need to be added in combination.

[0003] However, existing waterproofing and drainage devices used in water conservancy engineering tunnel construction often leave sediment and sand trapped in water channels or collection wells when pumping out mud-water mixtures, which can easily cause blockages. Based on this, we propose a waterproofing and drainage device for water conservancy engineering tunnel construction to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a waterproof drainage device for water conservancy engineering tunnel construction, which facilitates the separation of mud and water and solves the problem that existing waterproof drainage devices for water conservancy engineering tunnel construction often cause sediment and sand to remain in water channels or collection wells when pumping out mud-water mixtures, easily leading to sedimentation and blockage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a waterproof drainage device for tunnel construction in water conservancy projects, comprising a drainage pipe, a servo motor fixedly installed at the top of the drainage pipe, a mud-water separation box located on one side of the drainage pipe, an isolation cover fixedly installed at the upper end of the mud-water separation box, a connecting plate hinged between the isolation cover and the drainage pipe, an adjusting cylinder rotatably installed at the right end of the mud-water separation box, a feed guide plate and a discharge guide plate respectively located on the left and right sides of the inner cavity of the mud-water separation box, and a discharge port located on the upper surface of the drainage pipe. The drainage pipe is equipped with an auger conveying assembly, and the servo motor is connected to the auger conveying assembly for driving the auger conveying assembly to rotate. The mud-water separation box is equipped with a separation cylinder for solid-liquid separation of mud and water. Two adjusting cylinders are symmetrically arranged, and the output end of the adjusting cylinder is rotatably connected to the outer wall of the drainage pipe. The adjusting cylinder is used to adjust the tilt angle of the drainage pipe relative to the mud-water separation box. The feed guide plate is used to receive and guide materials into the separation cylinder. The position of the discharge port is adapted to the feed guide plate so as to guide the mud and water discharged by the auger conveying assembly into the feed guide plate.

[0006] The auger conveyor assembly includes a drive rod and helical blades fixed on its circumferential surface. The drive rod is rotatably installed inside the drain pipe, and one end of the drive rod is fixedly connected to the output shaft of the servo motor.

[0007] The mud-water separation tank is also equipped with a rotating shaft. Both ends of the rotating shaft are rotatably connected to the inner wall of the mud-water separation tank and are stably supported by a fixing frame. A drive motor is fixedly installed on the outside of the mud-water separation tank. The output end of the drive motor is fixedly connected to the right end of the rotating shaft to drive the separation cylinder to rotate around its axis to complete the centrifugal separation operation.

[0008] Furthermore, a stirring seat is fixedly connected to the lower end of the transmission rod. The circumferential surface of the stirring seat is provided with multiple stirring blades. When the transmission rod rotates, the stirring blades rotate along with it, and perform preliminary stirring and dispersion of the mud-water mixture entering the drain pipe.

[0009] Furthermore, the separation cylinder has a conical structure, and the cylinder wall has evenly distributed separation holes. The bottom of the mud-water separation box has a water collection chamber, and the left end of the mud-water separation box has a drain outlet that communicates with the water collection chamber to discharge the separated clean water.

[0010] Furthermore, the two ends of the connecting plate are hinged to the top of the isolation cover and the top of the drain pipe, respectively, and work together with the adjusting cylinder to adjust the tilt angle of the drain pipe in the vertical plane.

[0011] Furthermore, the feed guide plate has a V-shaped structure. One end of the feed guide plate is fixedly connected to the mud-water separation box, and the other end of the feed guide plate extends to the upper part of the separation cylinder to receive the mud-water discharged from the outlet and concentrate it into the separation cylinder for separation treatment.

[0012] Furthermore, a sand discharge port is provided on the left end face of the mud-water separation box, and a discharge guide plate is fixedly installed in the sand discharge port. One end of the discharge guide plate is close to the outer side of the left end of the separation cylinder to receive the solid sediment discharged after separation, and the other end of the discharge guide plate extends outward to the outside of the mud-water separation box.

[0013] Furthermore, a water distribution box is fixedly installed on the top of the inner side of the isolation cover. The lower end face of the water distribution box is provided with rinsing nozzles arranged at equal intervals. The nozzles of all rinsing nozzles face the surface of the separation cylinder. A water inlet pipe is provided on the top of the isolation cover. The water inlet pipe is used to connect to an external water supply system to supply high-pressure water flow to the water distribution box to rinse the surface of the separation cylinder.

[0014] Furthermore, a servo motor drives the transmission rod to rotate to achieve conveying, while another independent drive motor drives the rotating shaft to rotate the separation cylinder to complete the separation operation. The two power systems are independently controlled and do not interfere with each other, which improves the reliability of operation and the accuracy of control.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The waterproof drainage device for tunnel construction in this water conservancy project achieves efficient and continuous transportation of mud-water mixture by setting up a screw conveyor assembly in conjunction with an adjustable-inclination drainage pipe. As the mud-water moves upward under the push of the screw blades, it is fully disturbed and dispersed by the stirring blades on the mixing seat, effectively preventing high-concentration mud from depositing and clogging in the pipe, and significantly improving the operational stability and anti-clogging performance of the drainage system.

[0017] 2. The waterproof and drainage device used in the construction of the tunnel of this water conservancy project adopts the principle of centrifugal separation. After the mud and water are discharged through the discharge port, they are introduced into the rotating conical separation cylinder through the V-shaped feed guide plate to achieve rapid solid-liquid separation. The water enters the water collection chamber through the separation hole and is discharged through the drain port, while the solid mud and sand slide along the cylinder wall to the lower end and are automatically discharged from the sand discharge port through the discharge guide plate. Mud and water separation is carried out at the same time as drainage.

[0018] 3. The waterproof and drainage device for tunnel construction in this water conservancy project can dynamically adjust the inclination angle of the drainage pipe by setting up a cooperative structure of adjusting cylinder and hinged connecting plate, thereby changing the position height of the discharge port and the discharge direction, adapting to the installation space constraints and material introduction requirements under different working conditions, and enhancing the on-site adaptability and operational flexibility of the equipment.

[0019] 4. The waterproof and drainage device used in the construction of the water conservancy project tunnel is equipped with an integrated high-pressure flushing system, including a water distribution box, flushing nozzles arranged at equal intervals, and an external water supply interface. When the separation holes on the surface of the separation cylinder become clogged or blocked due to long-term operation, the flushing system can be started to clean them online without stopping the machine for disassembly, ensuring the continuous and stable separation efficiency and extending the service life of the equipment. Attached Figure Description

[0020] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0021] Figure 2 The diagram shown is a schematic representation of the drainage pipe structure of this utility model.

[0022] Figure 3 The diagram shown is a structural schematic of the mud-water separation box of this utility model.

[0023] Figure 4 The diagram shown is a schematic representation of the internal structure of the drainage pipe of this utility model.

[0024] Figure 5 The diagram shown is a schematic of the internal structure of the mud-water separation box of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Drain pipe; 101. Transmission rod; 102. Spiral blade; 103. Mixing seat; 2. Servo motor; 3. Mud-water separation box; 301. Drive motor; 302. Rotating shaft; 4. Separation cylinder; 5. Isolation cover; 501. Water distribution box; 502. Flushing nozzle; 6. Connecting plate; 7. Adjusting cylinder; 8. Feed guide plate; 9. Discharge guide plate; 10. Discharge port. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 The waterproof drainage device for tunnel construction in this embodiment includes a drainage pipe 1, a servo motor 2 fixedly installed at the top of the drainage pipe 1, a mud-water separation box 3 located on one side of the drainage pipe 1, an isolation cover 5 fixedly installed on the upper end of the mud-water separation box 3, a connecting plate 6 hinged between the isolation cover 5 and the drainage pipe 1, an adjusting cylinder 7 rotatably installed on the right end of the mud-water separation box 3, a feed guide plate 8 and a discharge guide plate 9 respectively located on the left and right sides of the inner cavity of the mud-water separation box 3, and a discharge port 10 located on the upper surface of the drainage pipe 1. The drainage pipe 1 is equipped with an auger conveyor assembly, and the servo motor 2 is connected to the auger conveyor assembly for driving its rotation. The mud-water separation box 3 is equipped with a separation cylinder 4 for solid-liquid separation of mud and water. Two adjusting cylinders 7 are symmetrically arranged, and the output end of the adjusting cylinder 7 is rotatably connected to the outer wall of the drainage pipe 1. The adjusting cylinder 7 is used to adjust the drainage pipe 1 relative to the mud-water... The tilt angle of the separation box 3 is such that the feed guide plate 8 is used to receive and guide the material into the separation cylinder 4, and the position of the discharge port 10 is adapted to the feed guide plate 8 to guide the mud and water discharged by the auger conveyor assembly into the feed guide plate 8. The auger conveyor assembly includes a transmission rod 101 and a spiral blade 102 fixed on its circumferential surface. The transmission rod 101 is rotatably installed in the drain pipe 1. One end of the transmission rod 101 is fixedly connected to the output shaft of the servo motor 2. Under the drive of the servo motor 2, the spiral blade 102 is rotated to push the mud and water sucked up from the bottom upward. The mud and water separation box 3 is also provided with a rotating shaft 302. The two ends of the rotating shaft 302 are rotatably connected to the inner wall of the mud and water separation box 3 and are stably supported by a fixing frame. A drive motor 301 is fixedly installed on the outside of the mud and water separation box 3. The output end of the drive motor 301 is fixedly connected to the right end of the rotating shaft 302 to drive the separation cylinder 4 to rotate around its axis, thereby achieving efficient separation of mud and water by using centrifugal force.

[0028] In this embodiment, a stirring seat 103 is fixedly connected to the lower end of the transmission rod 101. The circumferential surface of the stirring seat 103 is provided with multiple stirring blades. When the transmission rod 101 rotates, the stirring blades rotate along with it to perform preliminary stirring and dispersion of the mud-water mixture entering the drain pipe 1. When the transmission rod 101 rotates, the stirring blades rotate synchronously to perform preliminary shearing and dispersion of the mud-water mixture that has just entered the bottom of the drain pipe 1, effectively breaking up mud clumps or flocculents, preventing large particles from depositing and clogging the spiral channel, and significantly enhancing the adaptability of the equipment in high sand content environments. The stirring seat 103 is located near the bottom water inlet of the drain pipe 1.

[0029] It should be noted that servo motor 2 is dedicated to driving the auger conveyor assembly to lift the mud and water, while drive motor 301 independently controls the rotation of the separator drum 4. This split drive structure avoids the load interference problem caused by a single power source and improves the stability and controllability of the system operation.

[0030] Please see Figure 1 , Figure 3 and Figure 5 In this embodiment, the separation cylinder 4 has a conical structure, and the cylinder wall of the separation cylinder 4 is provided with uniformly distributed separation holes. The bottom of the mud-water separation box 3 is provided with a water collection cavity, and the left end of the mud-water separation box 3 is provided with a drain outlet that communicates with the water collection cavity, which is used to discharge the separated clean water and connect it to the reuse or discharge system. The conical design makes the separation cylinder 4 have a contour that gradually shrinks from the large end to the small end, which is conducive to the solid particles sliding and accumulating along the cylinder wall to the lower end under the action of centrifugal force, and finally being discharged in a concentrated manner.

[0031] In this embodiment, the two ends of the connecting plate 6 are respectively hinged to the top of the isolation cover 5 and the top of the drain pipe 1, and work together with the adjusting cylinder 7 to adjust the tilt angle of the drain pipe 1 in the vertical plane.

[0032] It should be noted that the separation hole is made by laser drilling process, with a moderate hole diameter (1-3mm). It can effectively intercept impurities of fine sand and larger particle size, while also ensuring water permeability and avoiding frequent clogging. In addition, the angle adjustment mechanism allows the drainage pipe 1 to be flexibly adjusted within ±15° to adapt to the material discharge docking needs under different installation heights or terrain changes.

[0033] Please see Figure 1 , Figure 4 and Figure 5In this embodiment, the feed guide plate 8 has a V-shaped structure. One end of the feed guide plate 8 is fixedly connected to the mud-water separation box 3, and the other end of the feed guide plate 8 extends to the upper part of the separation cylinder 4 to receive the mud-water discharged from the discharge port 10 and concentrate it into the separation cylinder 4 for separation treatment. The left end face of the mud-water separation box 3 is provided with a sand discharge port, and the discharge guide plate 9 is fixedly installed in the sand discharge port. One end of the discharge guide plate 9 is close to the outer side of the left end of the separation cylinder 4 to receive the solid sediment discharged after separation, and the other end of the discharge guide plate 9 extends outward to the outside of the mud-water separation box 3 for easy subsequent collection or transportation treatment.

[0034] It should be noted that the design of the V-shaped feed guide plate 8 enhances the material gathering capacity, and can still effectively guide the flow even if the discharge port 10 is slightly offset, thus improving the system's fault tolerance. Meanwhile, the discharge guide plate 9 maintains slight contact with the end of the separation cylinder 4 without generating frictional resistance, which can prevent mud and sand from overflowing and avoid affecting the normal rotation of the cylinder due to jamming.

[0035] Please see Figure 5 In this embodiment, a water distribution box 501 is fixedly installed on the top inner side of the isolation cover 5. The lower end face of the water distribution box 501 is provided with rinsing nozzles 502 arranged at equal intervals. The nozzles of all rinsing nozzles 502 face the surface of the separation cylinder 4. The top of the isolation cover 5 is provided with a water inlet pipe, which is used to connect to an external water supply system to supply high-pressure water flow to the water distribution box 501 to rinse the surface of the separation cylinder 4.

[0036] It should be noted that the flushing system can be automatically started during the separation operation interval or before each shutdown. High-pressure water flow through the circumferentially distributed flushing nozzles 502 to flush the outer surface of the separation cylinder 4 and the separation holes in all directions, remove the attached mud and dirt, and restore the water flow capacity.

[0037] The working principle of the above embodiments is as follows:

[0038] During operation, the mixture of groundwater and construction mud gathers at the bottom inlet of the drainage pipe 1. The servo motor 2 starts, driving the transmission rod 101 and its spiral blades 102 to rotate. At the same time, the mixing seat 103 at the lower end disturbs and disperses the mud and water to prevent blockage. The mud and water are gradually lifted to the upper part of the drainage pipe 1 and discharged through the discharge port 10.

[0039] At this time, the adjusting cylinder 7 pre-adjusts the tilt angle of the drain pipe 1 according to the working conditions to ensure that the discharge port 10 is accurately aligned with the V-shaped feed guide plate 8. The mud and water flow into the rotating conical separator 4. The drive motor 301 drives the rotating shaft 302 and the separator 4 to rotate. The water is thrown out through the separation hole on the cylinder wall to the water collection chamber and discharged through the left drain port. The heavier mud and sand particles are thrown towards the cylinder wall and slide along the cone surface to the lower end, and finally discharged from the left end and sent to the outside of the equipment through the discharge guide plate 9.

[0040] After running for a period of time, the control system can automatically start the flushing program: external water source enters the water distribution box 501 through the water inlet pipe, and high-pressure water is sprayed through the flushing nozzle 502 to backwash the surface of the separation cylinder 4, remove blockages, and maintain separation efficiency.

[0041] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof and drainage device for tunnel construction in water conservancy projects, characterized in that: The system includes a drain pipe (1), a servo motor (2) fixedly installed at the top of the drain pipe (1), a mud-water separation box (3) located on one side of the drain pipe (1), an isolation cover (5) fixedly installed at the top of the mud-water separation box (3), a connecting plate (6) hinged between the isolation cover (5) and the drain pipe (1), an adjusting cylinder (7) rotatably installed at the right end of the mud-water separation box (3), a feed guide plate (8) and a discharge guide plate (9) respectively located on the left and right sides of the inner cavity of the mud-water separation box (3), and a discharge port (10) located on the upper part of the surface of the drain pipe (1). The drain pipe (1) is equipped with an auger conveying assembly. The servo motor (2) and the auger... The conveying assembly is connected by a servo motor (2) to drive the auger conveying assembly to rotate. The mud-water separation box (3) is equipped with a separation cylinder (4) inside. The separation cylinder (4) is used to separate mud and water into solid and liquid. Two regulating cylinders (7) are symmetrically arranged. The output end of the regulating cylinder (7) is rotatably connected to the outer wall of the drain pipe (1). The regulating cylinder (7) is used to adjust the tilt angle of the drain pipe (1) relative to the mud-water separation box (3). The feed guide plate (8) is used to receive and guide the material into the separation cylinder (4). The position of the discharge port (10) is adapted to the feed guide plate (8) so as to guide the mud and water discharged by the auger conveying assembly into the feed guide plate (8). The auger conveyor assembly includes a drive rod (101) and a spiral blade (102) fixed on its circumferential surface. The drive rod (101) is rotatably installed inside the drain pipe (1), and one end of the drive rod (101) is fixedly connected to the output shaft of the servo motor (2). The mud-water separation box (3) is also equipped with a rotating shaft (302). The two ends of the rotating shaft (302) are rotatably connected to the inner wall of the mud-water separation box (3) and are stably supported by a fixed frame. A drive motor (301) is fixedly installed on the outside of the mud-water separation box (3). The output end of the drive motor (301) is fixedly connected to the right end of the rotating shaft (302) to drive the separation cylinder (4) to rotate around its axis to complete the centrifugal separation operation.

2. The waterproof drainage device for hydraulic engineering tunnel construction according to claim 1, characterized in that: The lower end of the transmission rod (101) is fixedly connected to the stirring seat (103). The circumferential surface of the stirring seat (103) is provided with multiple stirring blades. When the transmission rod (101) rotates, the stirring blades rotate along with it to perform preliminary stirring and dispersion of the mud-water mixture entering the drain pipe (1).

3. The waterproof drainage device for hydraulic engineering tunnel construction according to claim 1, characterized in that: The separation cylinder (4) has a conical structure, and the cylinder wall of the separation cylinder (4) is provided with evenly distributed separation holes. The bottom of the mud-water separation box (3) is provided with a water collection cavity, and the left end of the mud-water separation box (3) is provided with a drain outlet connected to the water collection cavity for discharging the separated clean water.

4. The waterproof drainage device for hydraulic engineering tunnel construction according to claim 1, characterized in that: The two ends of the connecting plate (6) are respectively hinged to the top of the isolation cover (5) and the top of the drain pipe (1), and work together with the adjusting cylinder (7) to adjust the tilt angle of the drain pipe (1) in the vertical plane.

5. The waterproof drainage device for hydraulic engineering tunnel construction according to claim 1, characterized in that: The feed guide plate (8) has a V-shaped structure. One end of the feed guide plate (8) is fixedly connected to the mud-water separation box (3), and the other end of the feed guide plate (8) extends to the upper part of the separation cylinder (4) to receive the mud-water discharged from the outlet (10) and concentrate it into the separation cylinder (4) for separation treatment.

6. The waterproof drainage device for hydraulic engineering tunnel construction according to claim 1, characterized in that: The mud-water separation box (3) has a sand discharge port on its left end face. The discharge guide plate (9) is fixedly installed in the sand discharge port. One end of the discharge guide plate (9) is close to the outer side of the left end of the separation cylinder (4) to receive the solid sediment discharged after separation. The other end of the discharge guide plate (9) extends outward to the outside of the mud-water separation box (3).

7. The waterproof drainage device for hydraulic engineering tunnel construction according to claim 1, characterized in that: A water distribution box (501) is fixedly installed on the top of the inner side of the isolation cover (5). The lower end face of the water distribution box (501) is provided with flushing nozzles (502) arranged at equal intervals. The nozzles of all flushing nozzles (502) face the surface of the separation cylinder (4). The top of the isolation cover (5) is provided with a water inlet pipe, which is used to connect to an external water supply system to supply high-pressure water flow to the water distribution box (501) to flush the surface of the separation cylinder (4).

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