Plugging device for grouting fracture surface crack

Abstract

The plugging device comprises a grouting equipment body, a connecting pipe and a grouting needle head assembly, the grouting needle head assembly comprises a grouting pipe and a grouting needle head, the grouting pipe is installed at the material conveying end of the grouting equipment body through the connecting pipe, and a sealing plate is arranged on the side, away from the connecting pipe, of the grouting pipe. A first thread and a second thread are correspondingly arranged on the surfaces, on the two sides of the sealing plate, of the grouting pipe, the first thread is arranged on the side, close to the connecting pipe, of the grouting pipe, a first fixing plate is arranged on the side, away from the connecting pipe, of the sealing plate in a contact mode and installed on the grouting pipe in a sleeving mode, and a sealing rubber pad is arranged on the periphery of the first fixing plate in the circumferential direction. The drill hole is further sealed and installed, the drill hole and the threaded shaft barrel are installed in an abutting mode, the grouting pipe is fixedly installed on the crack face, and stable grouting construction is achieved; and air flow in the crack is pumped out from the air pumping through holes of the bobbin I, the bobbin II and the threaded shaft barrel, so that air in the crack is pumped out.

Description

A sealing device for grouting cross-sectional fissures. Technical Field

[0001] This utility model relates to the field of cross-sectional crack sealing technology, specifically to a sealing device for cross-sectional crack grouting. Background Technology

[0002] The main function of a fissure grouting sealing device is to inject specific grout into the pores and fissures of the strata or structure to alter its physical and mechanical properties, thereby improving its stability and load-bearing capacity. This method can effectively solve problems such as unstable foundations and structural cracking in numerous engineering projects.

[0003] In existing product technologies, such as the OKM300A model crack grouting and sealing device shown in Figure 7, the grout is easily ejected during the sealing process due to poor sealing between the grouting needle and the crack, making it impossible to achieve the required crack sealing quality.

[0004] Therefore, there is a need to provide a sealing device for grouting cross-sectional fissures. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention provides a sealing device for grouting cross-sectional cracks, aiming to solve the technical problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for grouting cross-sectional cracks, comprising a grouting equipment body, a connecting pipe, and a grouting needle assembly. The grouting needle assembly includes a grouting pipe and a grouting needle. The grouting pipe is installed at the material delivery end of the grouting equipment body via the connecting pipe. A sealing plate is provided on the side of the grouting pipe away from the connecting pipe. Threads one and two are correspondingly provided on the surfaces of the grouting pipe on both sides of the sealing plate. Thread one is provided on the side of the grouting pipe closest to the connecting pipe. A fixing plate one is contacted on the side of the sealing plate away from the connecting pipe, and the fixing plate is sleeved and installed on the grouting pipe. On the upper part, a sealing gasket is provided around the periphery of the fixing plate one. The opening of the sealing gasket faces the connecting pipe and surrounds the outside of the sealing plate. An air bladder layer is provided near the connection between the sealing gasket and the fixing plate one, and the air bladder layer is coaxial with the sealing gasket. A grouting needle is provided on the thread two. The fixing plate one is clamped between the grouting needle and the sealing plate. A threaded shaft is provided on the thread one. The threaded shaft is provided with a tapered end facing the sealing plate. The outer surface of the tapered end contacts and presses against the air bladder layer. After being threaded with the thread one, the end face of the tapered end away from the connecting pipe contacts the sealing plate.

[0007] Preferably, the end of the grouting needle is provided with a second fixing plate, which is clamped to the first fixing plate.

[0008] Preferably, the second fixing plate, the first fixing plate, the sealing plate, and the threaded shaft cylinder are all provided with an air extraction hole, and the air extraction hole is provided to pass through the threaded shaft cylinder along its axial direction.

[0009] Preferably, the second fixing plate is provided with a threaded cap, and a nut is installed on the external thread of the threaded cap. The end face of the nut facing the grouting needle is provided as a tube first, and the end face of the tube first away from the grouting needle is provided as a tube second. The tube second is inserted into the air extraction hole of the second fixing plate, the first fixing plate, and the sealing plate.

[0010] Preferably, the side of the threaded shaft sleeve away from the tapered end is provided with a second nut.

[0011] Preferably, a tube three is provided at the end of the air extraction hole on the threaded shaft, and a sealing plug is installed on the threaded tube three.

[0012] In summary, this utility model provides a sealing device for grouting cross-sectional cracks. To solve the technical problems of easy grout spraying and overflow during grouting of cracks in the prior art, the technical method adopted by this patent is as follows: the end of the grouting needle is clamped and fixed to the sealing plate, so that the sealing gasket is positioned and installed on the grouting pipe. The grouting needle is inserted into the drill hole and extends into the crack. The outer surface of the sealing gasket is in contact with the inner wall of the drill hole. The threaded part is threadedly installed with the threaded shaft. The outer wall of the threaded shaft is abutted against the inner wall of the sealing gasket. As the threaded shaft extends into the sealing gasket, the conical end contacts and squeezes the airbag layer, so that the airbag layer is sealed against the inside of the drill hole, forming a sealed installation of the drill hole. The technical problem of grout leakage is avoided during the grouting process. The sealing gasket is sealed between the threaded shaft and the drill hole, further sealing the drill hole. The drill hole and the threaded shaft are abutted against each other, realizing the fixed installation of the grouting pipe on the crack surface and realizing stable grouting construction.

[0013] The second cylinder is inserted and extended into the air extraction holes of the second fixed plate, the first fixed plate, and the sealing plate, so that the air extraction holes of the second fixed plate and the sealing plate are coaxially arranged. This facilitates the air extraction construction in the crack and avoids the sealing gasket from shifting during the installation of the grouting pipe and the drilling, which would affect the air extraction construction. During the air extraction process, the airflow in the crack is extracted from the air extraction holes of the first cylinder, the second cylinder, and the threaded cylinder, thus realizing the extraction of air from the crack. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the cross-sectional crack grouting and sealing device of this utility model;

[0015] Figure 2 is a schematic diagram of the grouting needle assembly of this utility model;

[0016] Figure 3 is a cross-sectional structural diagram of the grouting needle assembly of this utility model;

[0017] Figure 4 is a schematic diagram of the threaded cap structure on the grouting needle of this utility model;

[0018] Figure 5 is a schematic diagram of the connection relationship between Nut 1, Sleeve 1, and Sleeve 2 of this utility model;

[0019] Figure 6 is a schematic diagram of the three parts of the grouting pipe and the sealing plug structure of this utility model;

[0020] Figure 7 is a schematic diagram of existing cross-sectional crack grouting and sealing equipment;

[0021] In the diagram: 1. Grouting equipment body; 2. Connecting pipe; 3. Grouting needle assembly; 4. Grouting pipe; 5. Grouting needle; 6. Sealing plate; 7. Thread 1; 11. Thread 2; 12. Fixing plate 1; 13. Sealing gasket; 14. Airbag layer; 15. Threaded shaft cylinder; 16. Conical end; 17. Fixing plate 2; 21. Air extraction hole; 22. Threaded cap; 23. Nut 1; 24. Spool 1; 25. Spool 2; 26. Nut 2; 27. Spool 3; 27. Sealing plug; 31. Material cylinder; 32. Storage cylinder; 33. Drive mechanism; 34. Booster pump; 35. Dividing hole; 36. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] As shown in Figures 1 to 6:

[0024] This utility model is a sealing device for grouting cross-sectional cracks. It improves the grouting structure of the OKM300A model crack grouting sealing device to solve the technical problems of easy grout spraying and overflow during crack grouting in the prior art. Before on-site grouting, the crack needs to be sealed and leak-proofed by drilling along the crack end face. The diameter of the drilled hole is set to be close to the outer diameter of the threaded shaft cylinder 15. The threaded shaft cylinder 15 cooperates with the airbag layer 14 on the sealing gasket 13 to seal the drilled hole, thereby preventing grout overflow or spraying during the grouting process. The specific implementation structure of this patent includes: a grouting equipment body 1, a connecting pipe 2, and a grouting needle assembly 3. The grouting needle assembly 3 includes a grouting pipe 4 and a grouting needle 5. The material delivery end of the grouting equipment body 1 is installed with the grouting pipe 4 through the connecting pipe 2. The side of the grouting pipe 4 away from the connecting pipe 2 is set as a sealing plate 6. The surfaces of the grouting pipe 4 on both sides of the sealing plate 6 are respectively set with threads 7. Thread 11 and thread 7 are set on the side of the grouting pipe 4 near the connecting pipe 2. The side of the sealing plate 6 away from the connecting pipe 2 is contacted by a fixing plate 12, and the fixing plate 12 is sleeved on the grouting pipe 4. A sealing gasket 13 is circumferentially arranged around the fixing plate 12. The opening of the sealing gasket 13 faces the connecting pipe 2 and surrounds the outside of the sealing plate 6. An airbag layer 14 is arranged near the connection between the sealing gasket 13 and the fixing plate 12, and the airbag layer 14 is coaxial with the sealing gasket 13. A grouting needle 5 is set on thread 11. The fixing plate 12 is clamped between the grouting needle 5 and the sealing plate 6. A threaded shaft cylinder 15 is set on thread 7. The side of the threaded shaft cylinder 15 facing the sealing plate 6 is set with a tapered end 16. The outer surface of the tapered end 16 contacts and presses against the airbag layer 14. After being threaded with thread 7, the end face of the tapered end 16 away from the connecting pipe 2 contacts the sealing plate 6.

[0025] During implementation, the grouting equipment body 1 is pushed to the designated construction site, and the material cylinder 32 is used to stir the grouting liquid. In this embodiment, the grouting liquid is preferably an epoxy resin gel, which has the advantages of moderate solidification time, which is conducive to on-site construction operation, high strength and early strength characteristics. After stirring, the material cylinder 32 is transported to the storage cylinder 33, and the booster pump 35 is driven by the drive mechanism 34 to transport the material. The material is then transported to the grouting pipe 4 through the connecting pipe 2, and the grouting needle 5 is inserted into the crack to grout and seal it.

[0026] Before grouting, the grouting pipe 4 and the grouting needle 5 are assembled and installed. The thread 7 on the grouting pipe 4 is pre-threaded onto the threaded shaft sleeve 15. The end of the grouting pipe 4 is threaded onto the connecting pipe 2. A fixing plate 12 is sleeved on the grouting end of the grouting pipe 4. A sealing gasket 13 is circumferentially arranged on the edge of the fixing plate 12. The fixing plate 12 contacts the sealing plate 6, and the sealing gasket 13 surrounds the sealing plate 6. The grouting needle 5 is threaded onto the thread 11. The end of the grouting needle 5 clamps the fixing plate 12 with the sealing plate 6, positioning the sealing gasket 13 on the grouting pipe 4. The grouting needle 5 is inserted into the drill hole and extends into the crack. The outer surface of the gasket 13 contacts the inner wall of the borehole. The threaded shaft 15 is threadedly installed with the threaded cylinder 15. The outer wall of the threaded cylinder 15 abuts against the inner wall of the sealing gasket 13. As the threaded cylinder 15 extends into the interior of the sealing gasket 13, the tapered end 16 contacts and squeezes the airbag layer 14, causing the airbag layer 14 to seal against the interior of the borehole, forming a sealed installation of the borehole. This avoids the technical problem of grout leakage during the grouting process. The sealing gasket 13 is sealed between the threaded cylinder 15 and the borehole, further sealing the borehole. The borehole and the threaded cylinder 15 abut against each other, thus fixing the grouting pipe 4 on the crack surface and achieving stable grouting construction.

[0027] In at least one embodiment, in order to achieve the positioning and installation of the sealing gasket 13 on the grouting pipe 4, the structure adopted is as follows: the end of the grouting needle 5 is provided with a fixing plate 2 17, and the fixing plate 2 17 is clamped and configured with the fixing plate 1 12.

[0028] In at least one embodiment, in order to achieve air removal from the crack and create a vacuum state to facilitate rapid grouting, the technical structure adopted is as follows: the fixing plate 2 17, the fixing plate 1 12, the sealing plate 6, and the threaded shaft cylinder 15 are all provided with an air extraction hole 21, and the air extraction hole 21 is set through the threaded shaft cylinder 15 along its axial direction; an air extraction pump is connected to the air extraction hole 21 on the threaded shaft cylinder 15 outside the crack to extract air; when the air pressure gauge reading does not change, the air extraction hole 21 on the threaded shaft cylinder 15 is closed, and grouting construction is carried out.

[0029] In at least one embodiment, the second fixing plate 17 is provided with a threaded cap 22, and a nut 23 is installed on the external thread of the threaded cap 22. The end face of the nut 23 facing the grouting needle 5 is provided with a tube 24. The end face of the tube 24 away from the grouting needle 5 is provided with a tube 25. The tube 25 is inserted into the air extraction hole 21 of the second fixing plate 17, the first fixing plate 12, and the sealing plate 6.

[0030] The specific implementation method is as follows: In order to keep the air extraction hole 21 on the fixed plate 12 and the air extraction holes 21 on the fixed plate 27 and the sealing plate 6 in the same axial direction, a threaded cap 22 is provided on the fixed plate 27. The end face of the threaded cap 22 facing the grouting needle 5 is set as a first tube 24. The end face of the first tube 24 located inside the threaded cap 22 is set as a second tube 25. The second tube 25 is not in contact with the inner wall of the threaded cap 22 and is inserted and extended. The air extraction holes 21 of the fixing plate 21, fixing plate 12, and sealing plate 6 are arranged coaxially, which facilitates the air extraction construction in the crack and avoids the sealing gasket 13 from moving during the installation of the grouting pipe 4 and the drilling, which would affect the air extraction construction. During the air extraction process, the airflow in the crack is extracted from the air extraction holes 21 of the cylinder 1 24, cylinder 2 25, and threaded shaft cylinder 15, thereby realizing the extraction of air from the crack.

[0031] In at least one embodiment, in order to facilitate the installation of the threaded shaft sleeve 15 and the thread 7, a second nut 26 is provided on the side of the threaded shaft sleeve 15 away from the tapered end 16. The threaded shaft sleeve 15 is sealed to the drilled hole by turning the second nut 26 with a wrench.

[0032] In at least one embodiment, a tube 27 is provided at the end of the venting hole 21 on the threaded shaft cylinder 15. A sealing plug 31 is threaded onto the tube 27. After venting is completed, the venting hole 21 on the threaded shaft cylinder 15 is sealed by threading the sealing plug 31 onto the tube 27, creating a vacuum state in the crack, which is beneficial for grouting operations.

[0033] In at least one embodiment, in order to achieve uniform grouting, the circumferential surface of the grouting needle 5 is uniformly configured with dividing holes 36 to facilitate rapid and uniform grouting distribution.

[0034] The embodiments described in this utility model are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the protection scope of this utility model.

Claims

1. A plugging device for section fissure grouting, characterized in that, The equipment includes a grouting device body (1), a connecting pipe (2), and a grouting needle assembly (3). The grouting needle assembly (3) includes a grouting pipe (4) and a grouting needle (5). The material conveying end of the grouting device body (1) is connected to the grouting pipe (4) via the connecting pipe (2). The side of the grouting pipe (4) away from the connecting pipe (2) is provided with a sealing plate (6). The surfaces of the grouting pipe (4) on both sides of the sealing plate (6) are respectively provided with thread one (7) and thread two (11). Thread one (7) is provided on the side of the grouting pipe (4) close to the connecting pipe (2). The side of the sealing plate (6) away from the connecting pipe (2) is contacted with a fixing plate one (12), and the fixing plate one (12) is sleeved on the grouting pipe (4). A sealing gasket (13) is provided around the periphery of the fixing plate one (12). The opening of the gasket (13) is set facing the connecting pipe (2) and surrounds the outside of the sealing plate (6). An airbag layer (14) is set near the connection between the sealing gasket (13) and the fixing plate (12), and the airbag layer (14) and the sealing gasket (13) are set coaxially. A grouting needle (5) is set on the thread (2). The fixing plate (12) is clamped between the grouting needle (5) and the sealing plate (6). A threaded shaft cylinder (15) is set on the thread (7). The threaded shaft cylinder (15) is set with a tapered end (16) facing the sealing plate (6). The outer surface of the tapered end (16) contacts and presses the airbag layer (14). After the tapered end (16) is threaded with the thread (7), the end face of the tapered end (16) away from the connecting pipe (2) contacts the sealing plate (6).

2. The plugging device for section fissure grouting according to claim 1, characterized in that, The end of the grouting needle (5) is provided with a fixing plate two (17), which is clamped to the fixing plate one (12).

3. A sealing device for grouting cross-sectional fissures according to claim 2, characterized in that, Fixed plate 2 (17), fixed plate 1 (12), sealing plate (6), and threaded shaft cylinder (15) are all provided with an air extraction hole (21), and the air extraction hole (21) is provided through the threaded shaft cylinder (15) along its axial direction.

4. The plugging device for section fissure grouting according to claim 3, characterized in that, The second fixing plate (17) is provided with a threaded cap (22), and a nut (23) is installed on the external thread of the threaded cap (22). The end face of the nut (23) facing the grouting needle (5) is set as a tube (24). The end face of the tube (24) away from the grouting needle (5) is set as a tube (25). The tube (25) is inserted into the air extraction hole (21) of the second fixing plate (17), the first fixing plate (12), and the sealing plate (6).

5. The plugging device for section fissure grouting according to claim 1, characterized in that, The side of the threaded shaft sleeve (15) away from the tapered end (16) is provided with nut two (26).

6. The plugging device for section fissure grouting according to claim 2, characterized in that, A tube 3 (27) is provided at the end of the air extraction through hole (21) on the threaded shaft (15), and a sealing plug (31) is threaded on the tube 3 (27).

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