Special air bag type leaking stoppage grouting device

Abstract

The utility model relates to the technical field of foundation pit engineering, in particular to a special air bag type leaking stoppage grouting device which comprises a grouting pipe. An air injection pipe is vertically installed on the inner wall of the grouting pipe, the two ends of the air injection pipe penetrate through the side wall of the grouting pipe to be provided with an injection port and an air outlet respectively, a rubber air bag is arranged on the grouting pipe and located on the outer side of the air outlet, and a grouting drilling assembly is arranged at the bottom end of the grouting pipe. Connecting assemblies are arranged between the two end openings of the rubber air bag and the outer wall of the grouting pipe correspondingly, the rubber air bag can be filled in a drill hole after being expanded, during grouting, grout can be injected into a leakage point located below the rubber air bag under plugging of the rubber air bag, a gap between the rubber air bag and a soil body is filled, and the effect of plugging grouting is achieved in a matched mode. The plugging slurry is effectively prevented from being squeezed out due to the pressure of underground water, the plugging effect is guaranteed, and resource waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit engineering, in particular to a special airbag type leak plugging grouting device. Background Technique

[0002] During the foundation pit excavation process, various uncertain factors will be encountered, such as groundwater leakage. Especially in areas with many groundwater systems, emergency treatment work for groundwater leakage will be done during the foundation pit excavation process. When groundwater leaks, a grouting device is needed to inject slurry or other sealing materials into the leakage point, and the leakage point is sealed after the slurry or sealing material is solidified.

[0003] The existing foundation pit leakage repair mainly uses a grouting pipe to drill into the leakage point, and then pumps mortar or leak repair material into the leakage point through the grouting pipe. The leakage point is sealed after the mortar or leak repair material solidifies to achieve the leak repair effect. However, during the use of the existing leak repair grouting pipe, the mortar or leak repair material will leak from the gap between the pipe wall and the soil body, and during the pumping process, the injected mortar will be pushed out by the pressure of the underground water body, resulting in the deviation of the sealing position, poor sealing effect, and material waste; Therefore, a special airbag type leak plugging grouting device is proposed for the above problems. Content of the Utility Model

[0004] In order to make up for the deficiencies of the existing technology and solve the problems existing in the existing technology, the utility model proposes a special airbag type leak plugging grouting device.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a special airbag type leak plugging grouting device described in the utility model includes a grouting pipe; an air injection pipe is vertically installed on the inner wall of the grouting pipe, and the two ends of the air injection pipe respectively penetrate through the side wall of the grouting pipe to be provided with a filling port and an air outlet, and the filling port is located at the upper end of the grouting pipe, and the air outlet is located at the lower end of the grouting pipe. A rubber airbag is arranged on the grouting pipe, and the rubber airbag is located outside the air outlet.

[0006] A grouting drilling assembly is arranged at the bottom end of the grouting pipe. Connecting assemblies are respectively arranged between the two ports of the rubber airbag and the outer wall of the grouting pipe, and the air outlet is located between the two groups of connecting assemblies, which cooperates to achieve the function of sealing grouting, effectively preventing the leak plugging slurry from being squeezed out by the pressure of the underground water body, ensuring the sealing effect, and avoiding resource waste.

[0007] Preferably, the grouting drilling assembly includes an internal thread groove and an end pipe. The internal thread groove is opened in the bottom end opening of the grouting pipe. The top end of the end pipe is provided with an external thread connecting pipe that is threadedly connected to the internal thread groove in the bottom end opening of the grouting pipe, which cooperates to achieve the function of connecting and installing the end pipe and ensure the normal progress of the grouting operation.

[0008] Preferably, slurry outlets are evenly distributed on the side wall of the end pipe, and a drill bit is installed at the bottom end of the end pipe, which together achieve the function of grouting to seal the leakage point.

[0009] Preferably, the connection assembly includes a fixed sleeve and a rubber sleeve. The fixed sleeve is installed on the grouting pipe, and the rubber sleeve is installed at the port of the rubber airbag, which together achieve the function of fixing and sealing the rubber airbag to ensure the normal inflation of the rubber airbag.

[0010] Preferably, threaded ribs are installed on the outer wall of the fixed sleeve, and internal threaded rib grooves for threaded connection with the threaded ribs are provided on the inner wall of the rubber sleeve, which together achieve the function of connecting and installing the rubber airbag and improve the convenience of use.

[0011] Preferably, a fitting groove is provided on the outer wall of the rubber sleeve, and a fixing clip for locking is provided in the fitting groove, which together achieve the function of fixedly installing the rubber airbag.

[0012] Preferably, the fixing clip is rotatably connected at the ends of two arc-shaped plates, and the other ends of the two fixing clips are fixedly connected by bolts, which together achieve the function of facilitating installation.

[0013] Preferably, a slurry guiding protective shell for guiding is installed on the inner wall of the grouting pipe, and the air injection pipe is located inside the slurry guiding protective shell. An end joint is provided at the top end of the grouting pipe, which together achieve the function of guiding the grouting slurry and can protect the air injection pipe.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. The present utility model inflates the air injection pipe through the filling port, and when the air injection pipe is inflated, the air will be filled into the rubber airbag through the air outlet. When the rubber airbag is filled with gas, it will expand. After the rubber airbag expands, it will fill the drilling hole. When grouting, the slurry will be injected into the leakage point under the rubber airbag under the blockage of the rubber airbag and fill the gap between the rubber airbag and the soil body, which together achieve the function of plugging and grouting, effectively preventing the leakage plugging slurry from being squeezed out by the underground water pressure, ensuring the plugging effect and avoiding waste of resources.

[0016] 2. By removing the fixing clip from the fitting groove in the present utility model, when the rubber airbag rotates, the rubber sleeve will be rotated downward from the threaded ribs on the fixed sleeve through the internal threaded rib grooves, and then the rubber airbag will be removed from the grouting pipe. Then, the connection assembly at the port of the complete rubber airbag is rotated and arranged on the grouting pipe, and the rubber sleeve and the fixed sleeve are sealed under the extrusion of the fixing clip to ensure the inflation and use of the rubber airbag, which together achieve the function of quickly disassembling and assembling the airbag and effectively improve the convenience of use of the airbag in the leakage plugging and grouting device in this solution. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a first three-dimensional structure diagram;

[0019] Figure 2 It is an enlarged sectional view of the main structure of the grouting plugging device;

[0020] Figure 3 It is an enlarged view of area A in the sectional view of the main structure of the grouting plugging device;

[0021] Figure 4 It is an enlarged sectional view of the main structure of the grouting pipe;

[0022] Figure 5 It is an enlarged sectional view of the main structure of the connection component;

[0023] Figure 6 It is an enlarged sectional view of the main structure of the rubber airbag;

[0024] Figure 7 It is an enlarged view of the main structure of the installation of the fixed sleeve and the thread ribs;

[0025] Figure 8 It is an enlarged sectional view of the main structure of the rubber sleeve;

[0026] Figure 9 It is an enlarged view of the main structure of the installation of the end pipe and the drill bit.

[0027] In the figure: 1. Grouting pipe; 2. Gas injection pipe; 3. Filling port; 4. Air outlet; 5. Rubber airbag; 6. Internal thread groove; 7. End pipe; 8. Grout outlet; 9. Drill bit; 10. External thread connecting pipe; 11. End joint; 12. Grout guiding casing; 13. Fixed sleeve; 14. Thread ribs; 15. Rubber sleeve; 16. Internal thread rib groove; 17. Fitting groove; 18. Fixed clamp. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figures 1-6 As shown in the figure, a special airbag type leak plugging grouting device includes a grouting pipe 1; an air injection pipe 2 is vertically installed on the inner wall of the grouting pipe 1, and two ends of the air injection pipe 2 respectively penetrate through the side wall of the grouting pipe 1 to be provided with a filling port 3 and an air outlet 4, and the filling port 3 is located at the upper end of the grouting pipe 1, and the air outlet 4 is located at the lower end of the grouting pipe 1. A rubber airbag 5 is arranged on the grouting pipe 1, and the rubber airbag 5 is located outside the air outlet 4;

[0030] A grouting drilling assembly is arranged at the bottom end of the grouting pipe 1. Connecting assemblies are respectively arranged between the two ports of the rubber airbag 5 and the outer wall of the grouting pipe 1, and the air outlet 4 is located between the two groups of connecting assemblies.

[0031] The grouting drilling assembly includes an internal thread groove 6 and an end pipe 7. The internal thread groove 6 is opened in the bottom opening of the grouting pipe 1. The top end of the end pipe 7 is provided with an external thread connecting pipe 10 which is threadedly connected with the internal thread groove 6 in the bottom opening of the grouting pipe 1.

[0032] The side wall of the end pipe 7 is evenly distributed with slurry outlet ports 8, and a drill bit 9 is installed at the bottom end of the end pipe 7.

[0033] During operation, since the existing leak plugging grouting pipe will leak mortar or leak plugging materials between the pipe wall and the soil gap during use, and due to the underground water pressure during the pumping process, the injected mortar will be pushed outwards, resulting in the deviation of the plugging position, poor plugging effect, and material waste. In this solution, the end pipe 7 is installed in the internal thread groove 6 at the bottom end of the grouting pipe 1 through the external thread connecting pipe 10, and then the grouting pipe 1 is installed on the grouting drilling equipment. When the grouting drilling equipment operates, the grouting pipe 1 together with the end pipe 7 will be drilled into the leakage point. When the end pipe 7 rotates, the drill bit 9 will be used for drilling. After reaching the leakage point, the air injection equipment is connected to the filling port 3, and the air injection pipe 2 is inflated through the filling port 3. When the air injection pipe 2 injects air, it will be filled into the rubber airbag 5 through the air outlet 4. When the rubber airbag 5 is filled with gas, it will expand. After the rubber airbag 5 expands, it will fill the drilling hole, thereby sealing the drilling hole. Finally, the grouting pipe 1 is grouted through the grouting drilling equipment. The slurry will enter the end pipe 7 through the grouting pipe 1, and the slurry will be injected into the drilling hole through the slurry outlet ports 8. During grouting, the slurry will be injected into the leakage point under the rubber airbag 5 under the blockage of the rubber airbag 5 and fill the gap between the rubber airbag 5 and the soil, achieving the function of plugging and grouting, effectively preventing the leakage plugging slurry from being squeezed out due to the underground water pressure, ensuring the plugging effect, and avoiding resource waste.

[0034] Please refer to Figures 1-9 As shown in the figure, the connecting assembly includes a fixed sleeve 13 and a rubber sleeve 15. The fixed sleeve 13 is installed on the grouting pipe 1, and the rubber sleeve 15 is installed at the port of the rubber airbag 5.

[0035] A threaded rib 14 is installed on the outer wall of the fixed sleeve 13, and an internal threaded rib groove 16 that is threadedly connected to the threaded rib 14 is provided on the inner wall of the rubber sleeve 15.

[0036] A fitting groove 17 is provided on the outer wall of the rubber sleeve 15, and a fixed clamping member 18 for locking is provided in the fitting groove 17.

[0037] The fixed clamping member 18 is rotatably connected at the ends of two arc-shaped plates, and the other ends of the two fixed clamping members 18 are fixedly connected by bolts.

[0038] A slurry guiding protective shell 12 for guiding is installed on the inner wall of the grouting pipe 1, and the gas injection pipe 2 is located inside the slurry guiding protective shell 12. An end joint 11 is provided at the top end of the grouting pipe 1.

[0039] During operation, to ensure the normal use of the airbag type leak plugging grouting device in this solution and facilitate replacement after the airbag is damaged, in this solution, after the rubber airbag 5 is damaged, first remove the end pipe 7 from the bottom end of the grouting pipe 1, and then unlock the connection components at the two ports of the rubber airbag 5. When unlocking, remove the fixed clamping member 18 from the fitting groove 17. After the fixed clamping member 18 is removed, rotate the connection components at both ends of the rubber airbag 5. When the rubber airbag 5 rotates, the rubber sleeve 15 will be rotated downward from the threaded rib 14 on the fixed sleeve 13 through the internal threaded rib groove 16, and the rubber sleeve 15 at the upper port of the rubber airbag 5 can also be rotated and removed from the threaded rib 14 on the fixed sleeve 13 at the bottom end of the grouting pipe 1 through the internal threaded rib groove 16, so as to remove the rubber airbag 5 from the grouting pipe 1. Then, rotate the connection components at the ports of the complete rubber airbag 5 and set them on the grouting pipe 1, and threadedly connect them to the threaded rib 14 on the fixed sleeve 13 on the grouting pipe 1. During installation, the rubber sleeve 15 will be rotatably set on the threaded rib 14 on the fixed sleeve 13 through the internal threaded rib groove 16, and the rubber sleeve 15 will be threadedly connected to the threaded rib 14 through the internal threaded rib groove 16. Subsequently, lock the fixed clamping member 18 in the fitting groove 17. Under the locking and extrusion of the fixed clamping member 18, the rubber sleeve 15 will be fixed on the fixed sleeve 13, and the rubber sleeve 15 will be sealed between the fixed sleeve 13 under the extrusion of the fixed clamping member 18, so as to ensure the inflation and expansion of the rubber airbag 5 for use, achieving the function of rapid disassembly and assembly of the airbag, and effectively improving the use convenience of the airbag type leak plugging grouting device in this solution.

[0040] Working principle: The end pipe 7 is installed in the internal thread groove 6 at the bottom end of the grouting pipe 1 through the external thread connecting pipe 10. Then, the grouting pipe 1 is installed on the grouting drilling equipment. When the grouting drilling equipment operates, the grouting pipe 1 together with the end pipe 7 will be drilled into the leakage point. When the end pipe 7 rotates, it will drill through the drill bit 9. After reaching the leakage point, the gas injection equipment is connected to the gas injection port 3, and the gas injection pipe 2 is inflated through the gas injection port 3. When the gas injection pipe 2 injects gas, the gas will be filled into the rubber airbag 5 through the air outlet 4. When the rubber airbag 5 is filled with gas, it will expand. After the rubber airbag 5 expands, it will fill the drill hole, thereby sealing the drill hole. Finally, the grouting pipe 1 is grouted through the grouting drilling equipment. The grout will enter the end pipe 7 through the grouting pipe 1, and the grout will be injected into the drill hole from the grout outlet 8. When grouting, the grout will be injected into the leakage point under the rubber airbag 5 under the blockage of the rubber airbag 5 and fill the gap between the rubber airbag 5 and the soil body. The cooperation achieves the effect of plugging and grouting, effectively preventing the leakage plugging grout from being squeezed out due to the pressure of the underground water body, ensuring the plugging effect, and avoiding waste of resources.

[0041] First, the end pipe 7 is removed from the bottom end of the grouting pipe 1, and then the connection components at both ends of the rubber airbag 5 are unlocked. When unlocking, the fixed clamping piece 18 is removed from the fitting groove 17. After the fixed clamping piece 18 is removed, by rotating the connection components at both ends of the rubber airbag 5, when the rubber airbag 5 rotates, the rubber sleeve 15 will be rotated downward from the thread rib 14 on the fixed sleeve 13 through the internal thread rib groove 16. And the rubber sleeve 15 at the upper port of the rubber airbag 5 can also be rotated and removed from the thread rib 14 of the fixed sleeve 13 at the bottom end of the grouting pipe 1 through the internal thread rib groove 16, thereby removing the rubber airbag 5 from the grouting pipe 1. Then, the connection components at the ports of the complete rubber airbag 5 are rotated and set on the grouting pipe 1 and are threadedly connected to the thread rib 14 of the fixed sleeve 13 on the grouting pipe 1. During installation, the rubber sleeve 15 will be rotated and set on the thread rib 14 on the fixed sleeve 13 through the internal thread rib groove 16, and the rubber sleeve 15 will be threadedly connected to the thread rib 14 through the internal thread rib groove 16. Subsequently, the fixed clamping piece 18 is locked in the fitting groove 17. Under the locking and extrusion of the fixed clamping piece 18, the rubber sleeve 15 will be fixed on the fixed sleeve 13, and the rubber sleeve 15 and the fixed sleeve 13 will be sealed under the extrusion of the fixed clamping piece 18 to ensure the inflation and expansion use of the rubber airbag 5. The cooperation achieves the function of rapid disassembly and assembly of the airbag, effectively improving the use convenience of the airbag in the leakage plugging and grouting device in this solution.

[0042] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A special airbag plugging grouting device, characterized in that: It comprises a grouting pipe (1); an air injection pipe (2) is vertically installed on the inner wall of the grouting pipe (1); both ends of the air injection pipe (2) penetrate the side wall of the grouting pipe (1) and are provided with a filling port (3) and an air outlet (4); the filling port (3) is located at the upper end of the grouting pipe (1); the air outlet (4) is located at the lower end of the grouting pipe (1); a rubber airbag (5) is provided on the grouting pipe (1), and the rubber airbag (5) is located outside the air outlet (4); The bottom end of the grouting pipe (1) is provided with a grouting drilling assembly, and connecting assemblies are respectively provided between the two ports of the rubber airbag (5) and the outer wall of the grouting pipe (1), and the air outlet (4) is located between the two groups of connecting assemblies.

2. A special airbag plugging grouting device according to claim 1, characterized in that: The grouting drilling assembly comprises an internal thread groove (6) and an end pipe (7), wherein the internal thread groove (6) is arranged in the bottom opening of the grouting pipe (1), and an external threaded pipe (10) threadedly connected to the internal thread groove (6) in the bottom opening of the grouting pipe (1) is installed at the top end of the end pipe (7).

3. A special airbag plugging grouting device according to claim 2, characterized in that: The side wall of the end pipe (7) is evenly distributed with slurry outlets (8), and the bottom end of the end pipe (7) is equipped with a drill bit (9).

4. A special airbag plugging grouting device according to claim 1, characterized in that: The connection assembly comprises a fixed sleeve (13) and a rubber sleeve (15), wherein the fixed sleeve (13) is installed on the grouting pipe (1), and the rubber sleeve (15) is installed at the port of the rubber airbag (5).

5. A special airbag plugging grouting device according to claim 4, characterized in that: The outer wall of the fixing sleeve (13) is provided with a threaded rib (14), and the inner wall of the rubber sleeve (15) is provided with an internal threaded rib groove (16) threadedly connected to the threaded rib (14).

6. A special airbag plugging grouting device according to claim 5, characterized in that: An engaging groove (17) is arranged on the outer wall of the rubber sleeve (15), and a fixing clamp (18) for locking is arranged in the engaging groove (17).

7. A special airbag plugging grouting device according to claim 6, characterized in that: The fixing clamp (18) is rotatably connected at two arc-shaped plate ends, and the other ends of the two fixing clamps (18) are fastened and connected by bolts.

8. The special airbag plugging grouting device according to claim 1 is characterized in that: A grouting guide casing (12) for guiding is installed on the inner wall of the grouting pipe (1), and the gas injection pipe (2) is located inside the grouting guide casing (12). An end joint (11) is provided at the top end of the grouting pipe (1).

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