A cement grout injection barrier wall construction device

Abstract

This invention discloses a cement grout injection barrier wall construction device, belonging to the field of barrier wall construction technology. The invention includes a discharge pipe, a lower conveying pipe, and an upper conveying pipe connected sequentially from bottom to top. A spiral guiding mechanism is fixed to the inner wall of the lower conveying pipe, and an impeller drive mechanism is connected below the spiral guiding mechanism. The spiral guiding mechanism includes a spiral guide plate; the impeller drive mechanism includes a rotating impeller, with the bottom discharge end of the spiral guide plate obliquely facing the rotating impeller; the rotating impeller is externally connected to a concrete vibrator mechanism via a transmission pair. In specific applications, cement grout is injected through the upper conveying pipe. Through the spiral guiding action of the spiral guide plate, the grout is directed and discharged from the discharge end of the spiral guide plate, generating an oblique impact force on the rotating impeller, thereby driving the impeller to rotate. The transmission mechanism drives the vibration unit inside the concrete vibrator mechanism to rotate, generating vibration and discharging air bubbles from the cement grout or polymer grout during the grouting process.

Description

Technical Field

[0001] This invention relates to the field of barrier wall construction technology, and more specifically to a cement grout injection barrier wall construction device. Background Technology

[0002] Pollutant barrier walls (also known as impermeable walls, water-proof walls, or pollution isolation walls) are civil engineering structures designed to prevent the spread of groundwater pollution or to block the infiltration of water pollutants. They are widely used in water conservancy, environmental protection, landfills, chemical storage areas, and other places. The construction method of water pollution barrier walls mainly depends on the design requirements of the wall, geological conditions, construction environment, and the materials selected.

[0003] In areas with loose soil or rock strata and large pores (such as sandy soil, loose sand layers, etc.), traditional water pollution barriers (such as concrete walls) may not achieve the desired effect because the soil is highly permeable under these geological conditions. For some areas that require deeper seepage prevention (such as places where the pollution source is deep or the groundwater layer is deep), grouting can form a seepage barrier in deeper underground layers through deep hole grouting technology. Grouting can effectively prevent pollutants from spreading in deeper layers of water and soil.

[0004] During the grouting process, air bubbles may be mixed in with the cement grout or polymer grout. Current technology mainly uses concrete vibrators to remove these air bubbles. The main working principle of a concrete vibrator is to use the high-speed vibration generated by the rotation of an eccentric wheel structure to remove air bubbles from the concrete. However, when the foundation pit is deep, the drive shaft of the vibrator is long, which leads to energy loss. At the same time, a large driving force is required to produce the expected amplitude effect, resulting in a large power requirement for the drive unit and high energy consumption. Therefore, structural optimization is necessary. Summary of the Invention

[0005] 1. The technical problem that the invention aims to solve:

[0006] To address the problem of air bubbles being mixed in during grouting construction of existing barrier walls, this invention provides a cement slurry injection barrier wall construction device. It fully utilizes the self-weight of the cement slurry during grouting, and guides it through a spiral guide plate. The cement slurry impacts and rotates the impeller, thereby driving the vibration of the concrete vibrator mechanism. This achieves the effect of vibrating and expelling air bubbles from the cement slurry or polymer slurry during the grouting process without the need for a vibrator.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0009] A cement grout injection barrier wall construction device includes a discharge pipe, a lower conveying pipe, and an upper conveying pipe connected sequentially from bottom to top. A spiral guiding mechanism is fixed to the inner wall of the lower conveying pipe, and an impeller drive mechanism is connected below the spiral guiding mechanism. The spiral guiding mechanism includes a spiral guide plate; the impeller drive mechanism includes a rotating impeller, with the bottom discharge end of the spiral guide plate angled towards the rotating impeller; the rotating impeller is externally connected to a concrete vibrator mechanism via a transmission pair. In specific applications, cement grout is injected through the upper conveying pipe. The spiral guide plate directs the grout flow, causing it to exit from the discharge end of the spiral guide plate and generate an oblique impact force on the rotating impeller, thus driving the impeller to rotate. The transmission mechanism drives the vibration unit inside the concrete vibrator mechanism to rotate, generating vibration that dissipates air bubbles in the cement grout or polymer grout during the grouting process.

[0010] A further technical solution involves using a gear pair for transmission, which doubles the rotational speed and drives the vibration unit to rotate at high speed, generating high-frequency vibration and improving the efficiency of bubble vibration and discharge.

[0011] In a further technical solution, a telescopic hose is connected and communicated between the lower conveying pipe and the upper conveying pipe; a piston pressurizing mechanism is fixedly connected to the outer wall of the upper conveying pipe, and the telescopic hose and the piston pressurizing mechanism work together to provide a downward impact airflow to the inside of the upper conveying pipe, thereby preventing the slurry from accumulating at the top of the spiral guide plate.

[0012] A further technical solution includes a piston pressurization mechanism comprising an annular piston chamber fitted onto the bottom opening of the outer wall of the upper conveying pipe, wherein a piston ring is slidably connected to the annular piston chamber via an elastic support mechanism; an air intake pipe is connected to the cavity above the piston ring and is connected to the upper conveying pipe via an exhaust pipe, and a one-way control valve is provided on the outer side of both the air intake pipe and the exhaust pipe.

[0013] A further technical solution includes a support slide rod, and a first support block and a second support block respectively fixed to the upper outer wall of the lower conveying pipe and the bottom outer wall of the upper conveying pipe, positioned at the lower and upper ends of the telescopic hose; one end of the support slide rod is connected to the surface of the first support block, and the other end passes through the second support block and is connected to the bottom end face of the piston ring; the piston ring and the second support block, as well as the support slide rod between the second support block and the first support block, are respectively surrounded by a third return spring and a first return spring; the two ends of the third return spring and the first return spring are respectively pressed against the piston ring and the second support block, as well as between the second support block and the first support block.

[0014] A further technical solution includes a first support frame and a second support frame fixed to the inner walls of the upper conveying pipe and the discharge pipe, respectively. A central sliding rod is slidably connected through the core of both the first and second support frames. A first support plate is connected to the bottom end of the spiral guide plate. After the central sliding rod passes through the spiral guide plate, its body is securely connected to the first support plate. The spiral guide plate is displaced downwards by the impact force of falling cement slurry. A second return spring is sleeved on the body of the central sliding rod at the bottom of the first support plate. A sleeved... The second support plate of the central slide rod body allows the central slide rod to move downwards along with the spiral guide plate and drive the first support plate to compress the second return spring; the impeller transmission mechanism also includes a central sleeve sleeved on the central slide rod body, with the rotating impeller fixed on the tube wall of the central sleeve; the top inclined surface of the rotating impeller is obliquely opposite the outlet end of the spiral guide plate; a limit ring is provided on the bottom outer wall of the central sleeve, with the bottom of the limit ring fitting against the top of the second support frame, and the central sleeve rotates around the central slide rod as the central axis under the directional impact of the cement slurry sliding down from the outlet end of the spiral guide plate.

[0015] A further technical solution includes an extended connecting ring cavity sealed on the outer wall of the connection between the discharge pipe and the lower conveying pipe; a connecting frame is provided at the top of the rotating impeller and is fastened to the central sleeve, and an installation ring is fastened to the far end of the connecting frame. A toothed ring is provided on the outer edge of the installation ring, and the bottom of the installation ring is in contact with the top surface of the discharge pipe for rotation. A drive shaft is vertically arranged in the extended connecting ring cavity, and a gear is sleeved on the shaft body of the drive shaft. The gear meshes with the toothed ring, and the outer diameter of the installation ring is larger than the outer diameter of the gear. The concrete vibrator mechanism is located at the bottom of the extended connecting ring cavity and is connected to the drive shaft for transmission.

[0016] In a further technical solution, the bottom of the second support plate is in contact with the top of the central sleeve; when the rotating impeller rotates and drives the central sleeve to rotate, the central sleeve rotates relative to the second support plate. When the second return spring is compressed, the lower end of the second support plate maintains a stable position.

[0017] In a further technical solution, the limiting ring is supported by the top of the second support frame, and the limiting ring further limits the position of the central sleeve and the rotating impeller. The top of the central sleeve further limits the second support plate. When the spiral guide plate moves downward, the rebound force of the second reset spring drives the spiral guide plate to move in the opposite direction.

[0018] In a further technical solution, when the second return spring is compressed, it generates a downward pushing force on the second support plate, which is further transmitted to the position of the central sleeve through the second support plate, causing the mounting ring to move downward. The mounting ring causes the discharge pipe and the lower conveying pipe to move downward as a whole, thereby causing the concrete vibrator mechanism to move downward. The downward movement of the lower conveying pipe compresses the first and third return springs, and causes the piston ring at the top of the support slide rod to move up and down.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0021] The cement grouting barrier wall construction device of the present invention utilizes the impact force generated by the gravity of the cement grout or polymer grout during the grouting process. This impact force drives the rotating impeller to rotate, and through force transmission, drives the gear to rotate, which in turn drives the vibration unit of the concrete vibrator mechanism to rotate and generate vibration. This achieves the function of vibrating and expelling air bubbles in the cement grout or polymer grout during the grouting process. This optimizes the requirements of long drive shafts and high-power drive units in existing structures. Furthermore, by using this impact force to drive the concrete vibrator mechanism to vibrate up and down with the discharge pipe, the position of the concrete vibrator mechanism can be adjusted during the air bubble removal process, thereby improving the air venting efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a specific embodiment;

[0023] Figure 2 This is a three-dimensional structural cross-sectional view of a specific embodiment;

[0024] Figure 3 This is an enlarged schematic diagram of the connection structure between the elastic support mechanism and the spiral guide mechanism in a specific embodiment;

[0025] Figure 4 This is an enlarged cross-sectional view of the internal structure of the piston pressurization mechanism in a specific embodiment;

[0026] Figure 5 This is an enlarged schematic diagram of the connection structure between the spiral material guiding mechanism and the impeller transmission mechanism in a specific embodiment;

[0027] Figure 6 yes Figure 5 Enlarged schematic diagram of the structure at point A;

[0028] Figure 7 This is an exploded view of the impeller drive mechanism in a specific embodiment.

[0029] In the diagram: 1. Discharge pipe; 2. Concrete vibrator mechanism; 3. Extended connecting ring cavity; 4. Lower conveying pipe; 5. First support block; 6. Telescopic hose; 7. Support slide rod; 8. Second support block; 9. Annular piston cavity; 10. Upper conveying pipe; 11. Clamping and positioning mechanism; 12. Exhaust pipe; 13. Inlet pipe; 14. Piston ring; 15. First support frame; 16. Central slide rod; 17. First return spring; 18. Spiral guide plate; 19. Rotating impeller; 20. Second support frame;

[0030] 21. Mounting ring; 22. First support plate; 23. Second return spring; 24. Second support plate; 25. Third return spring; 26. Gear; 27. Drive shaft; 28. Gear ring; 29. ​​Limiting ring; 30. Connecting frame; 31. Center sleeve. Detailed Implementation

[0031] To further understand the content of this invention, a detailed description of the invention is provided in conjunction with the accompanying drawings.

[0032] Example 1

[0033] The cement grout injection barrier wall construction device of this embodiment, such as Figure 1 , 2 As shown, the system includes a discharge pipe 1, a lower conveying pipe 4, and an upper conveying pipe 10 connected sequentially from bottom to top. A spiral guiding mechanism is fixed to the inner wall of the lower conveying pipe 4, and an impeller drive mechanism is connected below the spiral guiding mechanism. The spiral guiding mechanism includes a spiral guide plate 18. The impeller drive mechanism includes a rotating impeller 19, with the bottom discharge end of the spiral guide plate 18 angled towards the rotating impeller 19. The rotating impeller 19 is externally connected to a concrete vibrator mechanism 2 via a transmission pair. The transmission pair can be a gear pair or a ball screw pair, or other mechanisms that can convert rotation into up-and-down lifting vibration.

[0034] In the specific application of the cement grout injection barrier wall construction device of this embodiment, cement grout is injected through the upper conveying pipe 10. Through the spiral guiding action of the spiral guide plate 18, the grout is directed to flow in a directional manner, so that the grout is discharged from the discharge end of the spiral guide plate 18 and generates an oblique impact force on the rotating impeller 19, thereby driving the rotating impeller 19 to rotate. The transmission mechanism drives the vibration unit inside the concrete vibrator mechanism 2 to rotate and generate vibration, which vibrates and discharges air bubbles in the cement grout or polymer grout during the grouting process.

[0035] Example 2

[0036] The cement grout injection barrier wall construction device in this embodiment has the same basic structure as in embodiment 1, with the following differences or improvements: Figure 1 , 2As shown in Figure 6, the transmission pair is a gear pair, which doubles the rotational speed and drives the vibration unit to rotate at high speed, generating high-frequency vibration and improving the efficiency of bubble vibration and discharge. A telescopic hose 6 is also connected and communicated between the lower conveying pipe 4 and the upper conveying pipe 10; a piston pressurizing mechanism is fixedly connected to the outer wall of the upper conveying pipe 10. The telescopic hose 6 and the piston pressurizing mechanism work together to provide a downward impact airflow to the inside of the upper conveying pipe 10, thereby preventing the slurry from accumulating at the top of the spiral guide plate 18.

[0037] like Figure 2 , 4 As shown, the piston pressurization mechanism includes an annular piston chamber 9 with an opening at the bottom of the outer wall of the upper delivery pipe 10. A piston ring 14 is slidably connected to the annular piston chamber 9 by an elastic support mechanism. An air intake pipe 13 is connected to the cavity above the piston ring 14 and is connected to the upper delivery pipe 10 through an exhaust pipe 12. One-way control valves are provided on the outer sides of both the air intake pipe 13 and the exhaust pipe 12.

[0038] The elastic support mechanism includes a support slide rod 7, and a first support block 5 and a second support block 8, which are respectively fixed to the upper outer wall of the lower conveying pipe 4 and the bottom outer wall of the upper conveying pipe 10, respectively, and are located at the lower and upper ends of the telescopic hose 6. The two support blocks form the support function of the whole device. One end of the support slide rod 7 is connected to the surface of the first support block 5, and the other end passes through the second support block 8 and is connected to the bottom end face of the piston ring 14. The support slide rod 7 between the piston ring 14 and the second support block 8 and between the second support block 8 and the first support block 5 is surrounded by a third return spring 25 and a first return spring 17, respectively. The two ends of the third return spring 25 and the first return spring 17 are respectively pressed against the piston ring 14 and the second support block 8 and between the second support block 8 and the first support block 5. The second support block 8 and the first return spring 17 form the overall support function for the upper conveying pipe 10 above the telescopic hose 6 and the first support block 5 and the third return spring 25 support the lower conveying pipe 4 below the telescopic hose 6.

[0039] like Figure 2 , 3As shown, the spiral guiding mechanism also includes a first support frame 15 and a second support frame 20 respectively fixed to the inner walls of the upper conveying pipe 10 and the discharge pipe 1. The core of the first support frame 15 and the second support frame 20 are connected to a central sliding rod 16 through and slidably. The bottom end of the spiral guide plate 18 is connected to a first support plate 22. After the central sliding rod 16 passes through the spiral guide plate 18, the rod body is tightly connected to the first support plate 22. The spiral guide plate 18 is displaced downward by the impact force of falling cement slurry. A second return spring 23 is provided at the bottom of the first support plate 22 and sleeved on the rod body of the central sliding rod 16. The bottom of the second return spring 23 is provided with a sleeved on the central sliding rod. The second support plate 24 of the 16 rod body, the central slide rod 16 moves downward with the spiral guide plate 18 and drives the first support plate 22 to compress the second return spring 23; the impeller transmission mechanism also includes a central sleeve 31 sleeved on the central slide rod 16 rod body, and a rotating impeller 19 fixed on the tube wall of the central sleeve 31; the top inclined surface of the rotating impeller 19 is obliquely opposite the outlet end of the spiral guide plate 18; a limit ring 29 is provided on the bottom outer wall of the central sleeve 31, the bottom of the limit ring 29 is in contact with the top of the second support frame 20, and the central sleeve 31 rotates with the central slide rod 16 as the central axis under the directional impact of the cement slurry sliding down from the outlet end of the spiral guide plate 18.

[0040] like Figure 1 , 2 As shown in Figures 5, 6, and 7, an extended connecting ring cavity 3 is sealed on the outer wall of the connection between the discharge pipe 1 and the lower conveying pipe 4; a connecting frame 30 is provided on the top of the rotating impeller 19 and is fastened to the central sleeve 31; an installation ring 21 is fastened to the far end of the connecting frame 30; a toothed ring 28 is provided on the outer edge of the installation ring 21; the bottom of the installation ring 21 is in contact with the top surface of the discharge pipe 1 and rotates; a drive shaft 27 is vertically provided in the extended connecting ring cavity 3; a gear 26 is sleeved on the shaft of the drive shaft 27; the gear 26 is meshed with the toothed ring 28; the outer diameter of the installation ring 21 is larger than the outer diameter of the gear 26; the concrete vibrator mechanism 2 is at the bottom of the extended connecting ring cavity 3 and is connected to the drive shaft 27.

[0041] The bottom of the second support plate 24 is in contact with the top of the central sleeve 31; when the rotating impeller 19 rotates and drives the central sleeve 31 to rotate, the central sleeve 31 rotates relative to the second support plate 24. When the second return spring 23 is compressed, the lower end of the second support plate 24 maintains a stable position.

[0042] The limiting ring 29 is limited by the top of the second support frame 20. The limiting ring 29 further limits the position of the central sleeve 31 and the rotating impeller 19. The top of the central sleeve 31 further limits the second support plate 24. When the spiral guide plate 18 moves downward, the rebound force of the second reset spring 23 drives the spiral guide plate 18 to move in the opposite direction.

[0043] When the second return spring 23 is compressed, it generates a downward pushing force on the second support plate 24, which is further transmitted to the position of the central sleeve 31 through the second support plate 24. This causes the mounting ring 21 to move downward, which in turn causes the discharge pipe 1 and the lower conveying pipe 4 to move downward as a whole. This, in turn, causes the concrete vibrator mechanism 2 to move downward. The downward movement of the lower conveying pipe 4 compresses the first return spring 17 and the third return spring 25, and causes the piston ring 14 at the top of the support slide rod 7 to move up and down.

[0044] Example 3

[0045] The cement grout injection barrier wall construction device in this embodiment has the same basic structure as in Embodiment 2, but with further extensions in specific structure: such as Figure 1-7 As shown, the entire device includes a discharge pipe 1, a lower conveying pipe 4 is provided at the top of the discharge pipe 1, a telescopic hose 6 is provided at the top of the lower conveying pipe 4, an upper conveying pipe 10 is provided at the top of the telescopic hose 6, and a clamping and positioning mechanism 11 is held at the top of the outer side of the upper conveying pipe 10. The clamping and positioning mechanism 11 can be a retaining ring, which is sleeved and fixed to the outer wall of the upper conveying pipe 10.

[0046] An extended connecting annular cavity 3 is provided for a tight and sealed connection between the outer side of the top of the discharge pipe 1 and the outer side of the bottom of the lower conveying pipe 4.

[0047] A piston pressurizing mechanism is provided at the bottom of the outer side of the upper conveying pipe 10 near the telescopic hose 6. The piston pressurizing mechanism includes a piston ring 14. An elastic support mechanism is provided between the top of the outer side of the lower conveying pipe 4 and the bottom of the outer side of the upper conveying pipe 10. The elastic support mechanism includes a support slide rod 7. The top of the support slide rod 7 is fastened to the bottom of the piston ring 14. When the support slide rod 7 moves up and down, it drives the piston ring 14 to move up and down with the piston.

[0048] The elastic support mechanism also includes several sets of first support blocks 5 evenly distributed on the upper part of the outer side of the lower conveying pipe 4. The top surface of each first support block 5 is supported by a support slide rod 7. Several sets of second support blocks 8 are evenly distributed on the bottom of the outer side of the upper conveying pipe 10. The top of each support slide rod 7 extends to the top of the second support block 8. The rod body of each support slide rod 7 located between the second support block 8 and the first support block 5 is fitted with a first return spring 17. The rod body of each support slide rod 7 located at the top of the second support block 8 is fitted with a third return spring 25. The piston pressurization mechanism also includes an annular piston cavity 9 fitted on the bottom of the outer wall of the upper conveying pipe 10. The top of each support slide rod 7 extends from the bottom of the annular piston cavity 9. The part extends into the interior of the annular piston chamber 9. Inside the annular piston chamber 9, a piston ring 14 is fixedly connected to the top of the support slide rod 7. Several sets of exhaust pipes 12 extending into the interior of the upper conveying pipe 10 are evenly distributed on the top of the annular piston chamber 9. The end of the exhaust pipe 12 inside the upper conveying pipe 10 has an inclined downward structure to prevent the grout from entering the interior of the annular piston chamber 9 from top to bottom during grouting. At the same time, the airflow discharged from the exhaust pipe 12 pushes the slurry downward. An air inlet pipe 13 communicating with the interior of the annular piston chamber 9 is provided on the top of the cavity wall of the annular piston chamber 9. One-way control valves are provided on the outer walls of both the air inlet pipe 13 and the exhaust pipe 12.

[0049] A spiral guiding mechanism is provided at the top inside the lower conveying pipe 4. The spiral guiding mechanism includes a spiral guide plate 18. An impeller drive mechanism is provided at the top inside the discharge pipe 1, located directly below the spiral guide plate 18. The impeller drive mechanism includes a rotating impeller 19. The cement slurry slides down along the spiral guide plate 18 and drives the rotating impeller 19 to rotate.

[0050] The spiral guiding mechanism also includes a first support frame 15 located at the bottom of the upper conveying pipe 10, and a second support frame 20 located at the bottom of the discharge pipe 1. A central slide rod 16 is connected through the center of the first support frame 15 and the second support frame 20. A spiral guide plate 18 is located at the top of the central slide rod 16. The spiral guide plate 18 is displaced downward by the impact force of falling cement slurry. A first support plate 22 is located at the bottom of the spiral guide plate 18 and is sleeved on the outside of the central slide rod 16. The first support plate 22 is fastened to the central slide rod 16. A second return spring 23 is located at the bottom of the first support plate 22 and is sleeved on the outside of the central slide rod 16. A second support plate 24 is located at the bottom of the second return spring 23 and is sleeved on the outside of the central slide rod 16. The central slide rod 16 moves downward with the spiral guide plate 18 and drives the first support plate 22 to compress the second return spring 23.

[0051] The impeller drive mechanism includes a central sleeve 31 fitted around the bottom of the outer side of the central slide rod 16. Several sets of rotating impellers 19 are evenly distributed on the wall of the central sleeve 31. The top inclined surface of each rotating impeller 19 corresponds to the outlet end of the spiral guide plate 18. A limiting ring 29 is provided at the bottom of the wall of the central sleeve 31, and the bottom of the limiting ring 29 is in contact with the top of the second support frame 20. The central sleeve 31 rotates around the central slide rod 16 as its central axis due to the directional impact of cement slurry sliding down from the outlet end of the spiral guide plate 18. The top of each rotating impeller 19 is provided with a fitting that corresponds to the central sleeve 31. The connecting frame 30 is fastened together with the other end of the connecting frame 30. The mounting ring 21 is fastened together with the ring wall of the mounting ring 21. The bottom of the mounting ring 21 is in contact with the top surface of the discharge pipe 1 and rotates. Several sets of transmission shafts 27 are evenly arranged at the upper and lower ends of the extended connecting ring cavity 3. The shaft of each transmission shaft 27 is fitted with a gear 26. The gears 26 mesh with the gear rings 28. The outer diameter of the mounting ring 21 is larger than the outer diameter of the gears 26. Several sets of concrete vibrating rod mechanisms 2 that are connected to the transmission shafts 27 are evenly arranged at the bottom of the extended connecting ring cavity 3.

[0052] The bottom of the second support plate 24 is in contact with the top of the central sleeve 31. When the rotating impeller 19 rotates, causing the central sleeve 31 to rotate accordingly, the central sleeve 31 rotates relative to the second support plate 24. When the second return spring 23 is compressed, the lower end of the second support plate 24 maintains a stable position. The limiting ring 29 is supported by the top of the second support frame 20. The limiting ring 29 further limits the position of the central sleeve 31 and the rotating impeller 19. The top of the central sleeve 31 further limits the second support plate 24. When the spiral guide plate 18 moves downward... The rebound force of the second return spring 23 causes the spiral guide plate 18 to move in the opposite direction. When the second return spring 23 is compressed, it generates a downward pushing force on the second support plate 24. This force is further transmitted to the position of the central sleeve 31 through the second support plate 24, and causes the mounting ring 21 to move downward. The mounting ring 21 causes the discharge pipe 1 and the lower conveying pipe 4 to move downward as a whole, thereby causing the concrete vibrator mechanism 2 to move downward. The downward movement of the lower conveying pipe 4 compresses the first return spring 17 and the third return spring 25, and causes the piston ring 14 at the top of the support slide rod 7 to move up and down.

[0053] The cement grout injection barrier wall construction device of this embodiment is used as follows: the upper conveying pipe 10 is clamped by the clamping and positioning mechanism 11, and the discharge pipe 1 is placed into the pre-drilled grouting hole. At this time, cement grout or polymer grout is added to the inside of the upper conveying pipe 10 through the top of the upper conveying pipe 10. As the grout falls continuously, under the action of gravity, or it can be pressurized grout, the grout running speed increases continuously during the falling process. When the grout reaches the top of the spiral guide plate 18, it generates a downward impact force on the spiral guide plate 18. The spiral guide plate 18 moves downward, causing the central sliding rod 16 to move downward, which in turn causes the first support plate 22 to move downward and compress the second return spring 23.

[0054] At the same time, the spiral guide plate 18 guides the slurry in a directional manner, causing the slurry to be discharged from the outlet end of the spiral guide plate 18 and generate an oblique impact force on the rotating impeller 19, thereby driving the rotating impeller 19 to rotate.

[0055] The rotation of the impeller 19 drives the central sleeve 31 to rotate around the central slide rod 16. The rotation of the impeller 19 drives the mounting ring 21 on the outside of the connecting frame 30 to rotate, which in turn drives the gear ring 28 to rotate. The rotation of the gear ring 28 drives the gear 26 to rotate, which in turn drives the transmission shaft 27 to rotate. The diameter of the gear ring 28 is a multiple of that of the gear 26. The multiplied speed ratio between the gear ring 28 and the gear 26 causes the gear 26 to rotate at high speed, which in turn drives the transmission shaft 27 to rotate at high speed. The high-speed rotation of the transmission shaft 27 drives the vibration unit inside the concrete vibrator mechanism 2 to rotate at high speed and generate vibration, thereby achieving the effect of removing air bubbles by the vibration of the concrete vibrator mechanism 2. The working principle and technical characteristics of the concrete vibrator mechanism 2 are consistent with those of the existing concrete vibrator, realizing the function of removing air bubbles by vibrating and compacting concrete.

[0056] The slurry that slides down through the rotating impeller 19 is further discharged through the bottom of the discharge pipe 1, thereby filling the pre-drilled grouting holes. Accompanied by the vibration of the concrete vibrator mechanism 2, the function of removing air bubbles is achieved. This optimizes the problem that existing concrete vibrators require long drive shafts and high-power drive units in deep holes, and improves the practicality of the device.

[0057] As the second return spring 23 is compressed, it generates a downward pushing force on the second support plate 24, which in turn exerts downward pressure on the central sleeve 31 through the second support plate 24. Through the rebound force of the second return spring 23, the central sleeve 31 causes the mounting ring 21 to move downward as a whole. The bottom of the mounting ring 21 is limited by the top of the discharge pipe 1, which in turn causes the discharge pipe 1, the extended connecting ring cavity 3, and the lower conveying pipe 4 to move downward as a whole, which in turn causes the concrete vibrator mechanism 2 to move downward.

[0058] As the lower conveying pipe 4 moves downward, the support slide 7 at the top of the first support block 5 moves downward and compresses the first return spring 17 and the third return spring 25. The downward movement of the support slide 7 pulls the piston ring 14 downward inside the annular piston cavity 9.

[0059] The impact force of the falling slurry on the spiral guide plate 18 is constantly changing. When the first return spring 17 and the third return spring 25 are compressed simultaneously, a reverse rebound force will occur, which will pull the lower delivery pipe 4 upward and push the piston ring 14 upward. During the downward movement of the piston ring 14, airflow is supplied to the interior of the annular piston chamber 9 through the air inlet pipe 13. When the piston ring 14 moves upward, it provides downward impact airflow to the interior of the upper delivery pipe 10 through the exhaust pipe 12, thereby preventing the slurry from accumulating at the top of the spiral guide plate 18.

[0060] During the upward displacement of the lower conveying pipe 4, the concrete vibrator mechanism 2 at the bottom of the extended connecting ring cavity 3 is simultaneously moved upward, thereby realizing the function of moving the concrete vibrator mechanism 2 up and down. This allows the concrete vibrator mechanism 2 to automatically adjust its displacement during the vibration and de-airing process, thus expanding its range of slurry vibration.

[0061] The cement grouting barrier wall construction device of this embodiment utilizes the impact force generated by the cement grout or polymer grout during the grouting process due to its own gravity as it falls. This impact force drives the rotating impeller 19 to rotate via the spiral guide plate 18, and through the force transmission, drives the gear 26 to rotate, thereby driving the vibration unit of the concrete vibrator mechanism 2 to rotate and generate vibration. This achieves the function of vibrating and expelling air bubbles in the cement grout or polymer grout during the grouting process. This optimizes the requirements of long drive shafts and high-power drive units in existing structures. Furthermore, the impact force drives the concrete vibrator mechanism 2 to vibrate up and down with the discharge pipe 1, thereby adjusting the position of the concrete vibrator mechanism 2 during the air bubble removal process and improving the air venting efficiency.

[0062] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention. The actual structure and manufacturing steps are not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A cement paste grouting type barrier wall construction device, characterized by: It comprises a discharging pipe (1), a lower conveying pipe (4) and an upper conveying pipe (10) connected and communicated in sequence from bottom to top; The inner wall of the lower conveying pipe (4) is fixed with a spiral material guiding mechanism, and the lower conveying pipe (4) is connected with an impeller transmission mechanism below the spiral material guiding mechanism; The spiral material guiding mechanism comprises a spiral flow guide plate (18), and the impeller transmission mechanism comprises a rotating impeller (19), the bottom discharging end of the spiral flow guide plate (18) is obliquely opposite to the rotating impeller (19), and the rotating impeller (19) is connected with a concrete vibrating rod mechanism (2) through a transmission pair; The transmission pair is a gear pair; The lower conveying pipe (4) and the upper conveying pipe (10) are further connected and communicated with a flexible hose (6), a piston pressurizing mechanism is fixedly connected to the outer side wall of the upper conveying pipe (10), and the flexible hose (6) cooperates with the piston pressurizing mechanism to provide downward impact airflow to the inside of the upper conveying pipe (10); The piston pressurizing mechanism comprises an annular piston cavity (9) sleeved on the outer wall of the upper conveying pipe (10), a piston ring (14) is slidably connected in the annular piston cavity (9) through an elastic supporting mechanism, a cavity above the piston ring (14) is connected with an air inlet pipe (13), and the cavity is communicated with the upper conveying pipe (10) through an air outlet pipe (12).

2. The slurry wall construction apparatus of claim 1, wherein: The elastic supporting mechanism comprises a supporting slide rod (7), and a first supporting block (5) and a second supporting block (8) fixed to the outer wall of the upper part of the lower conveying pipe (4) and the outer wall of the bottom of the upper conveying pipe (10) respectively, one end of the supporting slide rod (7) is connected to the surface of the first supporting block (5), the other end passes through the second supporting block (8) and is connected to the bottom end face of the piston ring (14), and the rod body of the supporting slide rod (7) between the piston ring (14) and the second supporting block (8) and between the second supporting block (8) and the first supporting block (5) is respectively surrounded by a third reset spring (25) and a first reset spring (17).

3. The slurry wall construction apparatus of claim 2, wherein: The spiral material guiding mechanism further comprises a first supporting frame (15) and a second supporting frame (20) fixed to the inner walls of the upper conveying pipe (10) and the discharging pipe (1) respectively, a center slide rod (16) penetrates and slidably connects the centers of the first supporting frame (15) and the second supporting frame (20), the bottom end of the spiral flow guide plate (18) is connected with a first supporting plate (22), the center slide rod (16) penetrates the spiral flow guide plate (18) and is fastened with the first supporting plate (22) on the rod body, the bottom of the first supporting plate (22) is provided with a second reset spring (23) sleeved on the rod body of the center slide rod (16), the bottom of the second reset spring (23) is provided with a second supporting plate (24) sleeved on the rod body of the center slide rod (16), and the center slide rod (16) is displaced downward with the spiral flow guide plate (18) and drives the first supporting plate (22) to compress the second reset spring (23); The impeller transmission mechanism further comprises a center sleeve (31) sleeved on the rod body of the center slide rod (16), and the rotating impeller (19) is fixed to the pipe wall of the center sleeve (31); and the top inclined surface of the rotating impeller (19) is obliquely opposite to the outlet end of the spiral flow guide plate (18). The bottom outer wall of the center sleeve (31) is provided with a limiting ring (29), the bottom of the limiting ring (29) is attached to the top of the second support frame (20), the center sleeve (31) is subjected to directional impact of the cement slurry sliding down the outlet end of the spiral flow guide plate (18) to rotate around the center sliding rod (16) as the central axis.

4. The slurry wall construction apparatus of claim 3, wherein: The outer wall of the connection between the discharge pipe (1) and the lower conveying pipe (4) is sealingly connected with an expanded connecting ring cavity (3); the top of the rotating impeller (19) is provided with a connecting frame (30) tightly connected with the center sleeve (31), the distal end of the connecting frame (30) is tightly connected with a mounting ring (21), the outer edge of the mounting ring (21) is provided with a gear ring (28), the bottom of the mounting ring (21) is attached to the top surface of the discharge pipe (1) to rotate, the expanded connecting ring cavity (3) is vertically provided with a transmission shaft (27), the shaft body of the transmission shaft (27) is sleeved with a gear (26), the gear (26) is meshingly connected with the gear ring (28), the outer diameter of the mounting ring (21) is larger than the outer diameter of the gear (26); the concrete vibrating rod mechanism (2) is at the bottom of the expanded connecting ring cavity (3) and is drivingly connected with the transmission shaft (27).

5. The slurry wall construction apparatus of claim 4, wherein: The bottom of the second support plate (24) is attached to the top of the center sleeve (31); when the center sleeve (31) is rotated following the rotation of the rotating impeller (19), the center sleeve (31) is displaced relative to the second support plate (24), and when the second return spring (23) is compressed, the lower end of the second support plate (24) remains stable in position.

6. The slurry wall construction apparatus of claim 5, wherein: The limiting ring (29) is limited by the limiting support on the top of the second support frame (20), the position of the center sleeve (31) and the rotating impeller (19) is further limited by the limiting of the limiting ring (29), the top of the center sleeve (31) further limits the position of the second support plate (24), and when the spiral flow guide plate (18) is displaced downward, the spiral flow guide plate (18) is reversely displaced as a whole by the rebound force of the second return spring (23).

7. The slurry wall construction apparatus of claim 6, wherein: When the second return spring (23) is compressed, a downward pushing force is generated on the second support plate (24) and is further transmitted to the position of the center sleeve (31) through the second support plate (24), driving the mounting ring (21) to displace downward, driving the discharge pipe (1) and the lower conveying pipe (4) to displace downward as a whole through the mounting ring (21), thereby driving the concrete vibrating rod mechanism (2) to displace downward, and the lower conveying pipe (4) to displace downward, stretching the first return spring (17) and compressing the third return spring (25), and driving the piston ring (14) on the top of the support sliding rod (7) to displace upward and downward.

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