Cast-in-place pile grouting device capable of preventing grouting nozzle from being blocked

Abstract

The invention relates to the technical field of cast-in-place pile grouting processing, in particular to a cast-in-place pile grouting device capable of preventing a grouting nozzle from being blocked, which comprises a guide rail and a grouting delivery pump, and displacement mechanisms are movably connected to two ends in the guide rail. According to the equipment, through cooperative operation of multiple components, the grouting performance can be effectively improved, the blocking risk of a spray head is reduced, the grouting conveying pump, the conveying cylinder and the conical filtering net cover are matched with one another, an efficient filtering system is constructed, the conical filtering net cover uses a conical surface structure, the filtering area is enlarged, the efficiency is improved, meanwhile, large-particle impurities are guided to move outwards, and mesh blocking is prevented; when the equipment runs, a filtering mechanism, an outer cleaning group and an inner cleaning group work cooperatively, a driving motor drives an outer auger to enhance the fluidity of slurry, an inner cleaning shovel plate and an outer cleaning shovel plate clean the inner surface and the outer surface of a filtering net cover to prevent the slurry from being solidified and blocked, and linkage of the inner auger and the outer auger ensures stable and uniform conveying of the slurry; and the overall performance of the equipment is optimized comprehensively.

Description

Technical Field

[0001] The present application relates to the technical field of bored pile grouting processing, and in particular to a bored pile grouting device capable of preventing clogging of a grouting nozzle. Background Art

[0002] In the field of construction engineering, bored pile construction is widely used in various foundation engineering projects due to its strong adaptability and good bearing performance. Grouting is a key process to ensure the quality of bored pile projects. The normal operation of the grouting device is directly related to the pile quality and bearing capacity of the bored piles. However, in the actual construction process, the grouting nozzles of the bored pile grouting device are prone to clogging, which becomes a major obstacle to construction efficiency and project quality. The grouting of cast-in-place piles is often carried out with fine-grained cement as the main material. However, if the moisture-proof measures are not appropriate during storage and transportation, cement is very easy to get damp and agglomerate. Moreover, if the agglomerated cement is not fully broken up during slurry mixing, large particles of impurities will be formed. In addition, the quality of admixtures is unstable, the storage conditions are poor, the residual materials in the mixing equipment are not thoroughly cleaned, the transportation pipelines and the inner walls of the containers are rusted and peeled off, and the construction site environment is complex. For example, foreign matter such as wind, sand and dust are mixed in during open-air operations, all of which will lead to the presence of large particles in the grouting slurry. These large particles of impurities flow into the grouting nozzle with the slurry and easily cause the nozzle channel to be blocked, which will not only interrupt the grouting operation, delay the construction period and increase the construction cost, but also may affect the integrity and strength of the cast-in-place pile due to insufficient grouting, and bury the hidden dangers of project quality. It can be seen that the nozzle is prone to blockage during construction in the existing technology. Therefore, it is necessary to design a cast-in-place pile grouting device to prevent the grouting nozzle from being blocked. Summary of the Invention

[0003] In order to improve the grouting stability of the prior art bored piles, the present application provides a bored pile grouting device that prevents clogging of the grouting nozzle.

[0004] The invention provides a grouting pile grouting device for preventing clogging of a grouting nozzle, which adopts the following technical scheme: it comprises a guide rail and a grouting delivery pump, wherein both ends of the inner side of the guide rail are movably connected with a displacement mechanism, the bottom of the displacement mechanism is fixedly connected with a sealing cover plate, the grouting delivery pump is arranged on one side of the guide rail, the sliding end of the grouting delivery pump is fixedly connected with a connecting pipe, the outer end of the connecting pipe is fixedly installed with a delivery cylinder, the top of the delivery cylinder and the bottom of the guide rail are fixedly connected The filter mechanism includes a mounting ring, which is fixedly installed in the conveying barrel at one end away from the grouting conveying pump. A filter screen cover is fixedly installed on the inner side of the mounting ring. The filter screen cover is arranged in a cone shape as a whole. The inner cleaning group is arranged inside the filter screen cover. The outer end of the conical surface of the filter screen cover is rotatably connected to a turntable. The outer side of the turntable is transmission-connected to the power mechanism, and the inner side of the turntable is transmission-connected to the inner cleaning group. An outer cleaning group is provided on the side of the turntable away from the inner cleaning group, and the outer cleaning group is arranged on the outer side of the filter screen cover.

[0005] Optionally, a mounting seat is fixedly installed on the bottom of the grouting delivery pump, and a mounting base plate is fixedly installed on the bottom of the mounting seat.

[0006] Optionally, mounting brackets are fixedly mounted on the front and back sides of both ends of the guide rail, and mounting holes are opened at the outer ends of the mounting brackets, and the mounting holes are configured as countersunk holes.

[0007] Optionally, the power mechanism includes a drive motor, which is fixedly installed in the middle of the outer side of the sealing cover plate close to the grouting delivery pump of the two sealing cover plates. The output end of the drive motor passes through the sealing cover plate and is fixedly installed with a rotating shaft. The outer surface of the rotating shaft is fixedly installed with an external auger, and the external auger sleeve is arranged on the outside of the filter mesh cover.

[0008] Optionally, a conical groove is provided on the side of the external auger close to the external cleaning group, the filter screen is filled in the interior of the conical groove, an external hexagonal plug is fixedly connected to the interior of the conical groove, and the external hexagonal plug is inserted into the interior of the external cleaning group.

[0009] Optionally, the external cleaning group includes a fixed base frame, which is fixedly installed on the side of the turntable close to the drive motor, an external hexagonal sleeve frame is fixedly installed on the outer side of the fixed base frame, and the external hexagonal insert is inserted into the interior of the external hexagonal sleeve frame, and an external cleaning shovel plate is installed on the outer side of the fixed base frame by bolts, and the inner side of the external cleaning shovel plate is fitly connected to the outer surface of the filter cover.

[0010] Optionally, the internal cleaning group includes an inner hexagonal plug and a base frame, the base frame is fixedly installed on the inner side of the sealing cover plate away from the grouting delivery pump among the two sealing cover plates, the outer side of the base frame is fixedly connected with inner cleaning shovel plates arranged in a ring shape at equal intervals, the outer surface of the inner cleaning shovel plates is fit-connected to the inner wall of the filter screen cover, the side of the base frame close to the filter screen cover is fixedly connected with an inner hexagonal sleeve frame, and the inner hexagonal sleeve frame is sleeved on the outer surface of the inner hexagonal plug.

[0011] Optionally, an inner auger is fixedly installed inside the base frame, and the inner auger is configured in a cone shape as a whole.

[0012] Optionally, the displacement mechanism includes a slider, which is slidably connected to the inner ends of the guide rail, and the outer surface of the slider is fixedly connected to a slide frame, and the slide frame is slidably connected to the outer surface of the guide rail, the bottom of the slider is connected to the sealing cover plate, and the top of the slide frame is fixedly installed with a drive assembly.

[0013] Optionally, the drive assembly includes a side plate and a transmission rack, the side plate is fixedly mounted on one side of the sliding frame, a brake motor is fixedly mounted on the outer side of the side plate, the output end of the brake motor passes through the side plate and a transmission gear is fixedly mounted, the transmission rack is fixedly connected to the top of the guide rail, the transmission rack and the transmission gear are meshed and connected, and the cross-sectional shape of the internal cavity of the slider and the guide rail are both set to a convex shape.

[0014] In summary, this application has the following beneficial technical effects: This equipment builds a high-efficiency filtration system through the cooperation of the grouting delivery pump, delivery cylinder and conical filter screen. After the grouting delivery pump delivers concrete into the delivery cylinder, the conical filter screen, with its unique conical surface structure, not only greatly expands the filtration area and improves the filtration efficiency, but also uses the conical surface guidance characteristics to make the intercepted large particles of impurities slide to the outside to prevent mesh clogging. In this way, before the concrete slurry reaches the grouting nozzle, large particles of impurities are effectively removed, reducing the risk of nozzle clogging at the source and ensuring the smooth progress of the grouting operation. When the equipment is in operation, the filtration mechanism, external cleaning group and internal cleaning group work together to further improve its conveying stability and reduce the probability of grouting nozzle clogging. During use, the drive motor drives the external auger to improve slurry fluidity and conveying pressure, reducing the risk of nozzle clogging. The cooperation between the external hexagonal plug and the external hexagonal sleeve frame, and the internal hexagonal plug and the internal hexagonal sleeve frame, enables the external cleaning shovel and the internal cleaning shovel to clean the inner and outer surfaces of the filter cover respectively, preventing slurry solidification and clogging the filter screen. The linkage of the internal and external augers further improves the slurry conveying efficiency, ensures a stable and uniform conveying process, and optimizes equipment performance in all aspects. During the use of this device, it adopts a displacement mechanism in conjunction with the guide rail, which can improve the overall cleaning, inspection and maintenance convenience of the equipment during use. The brake motor drives the transmission gear and rack transmission, which drives the slider to slide and move the sealing cover plate outward, prompting the inner and outer hexagonal blocks to separate from the sleeve frame, and realize the rapid disassembly of the internal cleaning group and the power mechanism. This design facilitates the internal cleaning and maintenance of the equipment, shortens the maintenance time, reduces the maintenance difficulty, significantly improves the convenience of equipment use, and reduces the impact of maintenance problems on the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 This is a schematic diagram of the structure when viewed from above in an embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the overall unfolded state in the embodiment of the present application; Figure 4 This is a schematic diagram of the structure of the power mechanism, internal cleaning group and filtering mechanism in the embodiment of the present application; Figure 5 This is a schematic diagram of the outer structure of the power mechanism in the embodiment of the present application; Figure 6 This is a schematic diagram of the inner structure of the power mechanism in the embodiment of the present application; Figure 7 This is a schematic diagram of the structure of the inner cleaning group, the filtering mechanism and the outer cleaning group in the embodiment of the present application; Figure 8 This is a schematic diagram of the internal structure of the filter screen cover in an embodiment of the present application; Figure 9 This is a schematic diagram of the structure of the cleaning group in the embodiment of the present application; Figure 10 It is a schematic diagram of the structure of the internal cleaning group and displacement mechanism in the embodiment of the present application.

[0016] Figure numerals: 1, guide rail; 2, grouting pump; 3, displacement mechanism; 31, slider; 32, slide frame; 33, drive assembly; 331, side plate; 332, transmission rack; 333, brake motor; 334, transmission gear; 4, sealing cover; 5, connecting pipe; 6, power mechanism; 61, drive motor; 62, rotating shaft; 63, external auger; 64, tapered groove; 65, external hexagonal plug; 7, filter mechanism; 71, installation Ring; 72. Filter screen cover; 73. Turntable; 74. External cleaning group; 741. Fixed base frame; 742. External hexagonal sleeve frame; 743. External cleaning shovel; 8. Conveying cylinder; 9. Internal cleaning group; 91. Internal hexagonal insert; 92. Base frame; 93. Internal cleaning shovel; 94. Internal hexagonal sleeve frame; 95. Internal auger; 10. Mounting seat; 11. Mounting base plate; 12. Mounting frame; 13. Mounting hole; 14. Discharge pipe; 15. Connecting flange. DETAILED DESCRIPTION

[0017] The following is combined with Figure 1-10 This application is described in further detail.

[0018] The present application discloses a grouting device for a bored pile that prevents the grouting nozzle from being blocked. Figure 1-10As shown, it includes a guide rail 1 and a grouting delivery pump 2, both ends of the inner part of the guide rail 1 are movably connected with a displacement mechanism 3, the bottom of the displacement mechanism 3 is fixedly connected with a sealing cover plate 4, the grouting delivery pump 2 is arranged on one side of the guide rail 1, and the sliding end of the grouting delivery pump 2 is fixedly connected with a connecting pipe 5, the outer end of the connecting pipe 5 is fixedly installed with a delivery cylinder 8, the top of the delivery cylinder 8 is fixedly connected to the bottom of the guide rail 1, and a filtering mechanism 7 is fixedly installed inside the delivery cylinder 8, a power mechanism 6 is movably installed on the side of the delivery cylinder 8 near the input end, and the outer side of the power mechanism 6 can be connected to the sealing cover plate 4 on one side of the grouting delivery pump 2, an inner cleaning group 9 is installed on the side of the filtering mechanism 7 away from the power mechanism 6, and the end of the inner cleaning group 9 extends to the inner side of the filter assembly, a discharge pipe 14 is fixedly installed at the lower end of the sealing cover plate 4 away from the delivery pump side, and the outer end of the discharge pipe 14 is fixedly connected with a connecting flange 15; The filter mechanism 7 includes a mounting ring 71, which is fixedly mounted in the delivery barrel 8 at one end away from the grouting delivery pump 2. A filter screen cover 72 is fixedly mounted on the inner side of the mounting ring 71. The filter screen cover 72 is arranged in a conical shape as a whole. The inner cleaning group 9 is arranged inside the filter screen cover 72. The outer end of the conical surface of the filter screen cover 72 is rotatably connected to a turntable 73. The outer side of the turntable 73 is transmission-connected to the power mechanism 6, and the inner side of the turntable 73 is transmission-connected to the inner cleaning group 9. An outer cleaning group 74 is provided on the side of the turntable 73 away from the inner cleaning group 9. The outer cleaning group 74 is arranged on the outer side of the filter screen cover 72. When the present pile grouting device is in use, the grouting delivery pump 2 is started and concrete is pumped into the delivery barrel 8 through the connecting pipe 5. The delivery barrel 8 serves as a transmission channel to guide and transport the concrete. During the transportation process, the concrete will pass through the filter mechanism 7 in the delivery barrel 8, wherein the conical filter screen cover 72 filters the concrete. The filter screen 72 is cleaned by the outer cleaning group 74, and the outer cleaning shovel 743 is driven by the turntable 73 to rotate on the outside of the filter screen cover 72 to clean the impurities attached to the outer surface of the filter screen; on the other hand, the power mechanism 6 is connected to the inner cleaning group 9 through the turntable 73 to drive the inner cleaning shovel 93 to rotate inside the filter screen cover 72 to clean the inner wall of the filter screen and prevent the slurry from solidifying and clogging the filter screen. At the same time, the power mechanism 6 can also drive the outer auger 63 to rotate to enhance the slurry fluidity and delivery pressure. When maintenance is required, the displacement mechanism 3 in the guide rail 1 is started to drive the sealing cover 4 to move, so that the power mechanism 6 is separated from the sealing cover 4. The inner cleaning group 9 can also be drawn out from the inside of the filter screen cover 72 to facilitate cleaning and maintenance inside the device.

[0019] Please refer to Figure 1-Figure 3, a mounting seat 10 is fixedly installed at the bottom of the grouting delivery pump 2, and a mounting base 11 is fixedly installed at the bottom of the mounting seat 10. Mounting brackets 12 are fixedly installed on the front and back of both ends of the guide rail 1. A mounting hole 13 is opened at the outer end of the mounting bracket 12, and the mounting hole 13 is set as a countersunk hole. During the application of this equipment, the mounting seat 10 and the mounting base 11 at the bottom of the grouting delivery pump 2 constitute a stable supporting structure. The mounting seat 10 plays a transitional connection role, fixing the grouting delivery pump 2 thereon, and the mounting base 11 is in direct contact with the ground or foundation surface. By increasing the contact area, the pressure and vibration generated when the grouting delivery pump 2 is working are dispersed to ensure The grouting delivery pump 2 remains stable during operation, providing a solid foundation for its continuous and efficient delivery of concrete. Countersunk holes are provided on the mounting brackets 12 on the front and back of both ends of the guide rail 1. The countersunk hole design facilitates the use of countersunk screws to firmly mount the guide rail 1 on the wall, ground or other supporting structures. The screw heads are sunk into the holes to ensure that the surface of the mounting bracket 12 is flat, avoiding protruding screw heads that affect equipment operation or cause safety hazards. At the same time, the firmness and reliability of the installation of the guide rail 1 are enhanced, so that the guide rail 1 can stably carry components such as the displacement mechanism 3 and the sealing cover plate 4, thereby ensuring the structural stability of the entire bored pile grouting device during operation and maintenance.

[0020] Please refer to Figure 3-Figure 4 and Figures 6-10The outer cleaning group 74 includes a fixed base frame 741, which is fixedly mounted on the side of the turntable 73 close to the drive motor 61. The outer side of the fixed base frame 741 is fixedly mounted with an outer hexagonal sleeve frame 742, and the outer hexagonal insert 65 is inserted into the inner part of the outer hexagonal sleeve frame 742. The outer side of the fixed base frame 741 is fixed with an outer cleaning shovel 743 by bolts. The inner side of the outer cleaning shovel 743 is fitted with the outer surface of the filter cover 72. The inner cleaning group 9 includes an inner hexagonal insert 91 and a base frame 92. The base frame 92 is fixedly mounted between the two sealing cover plates 4 away from the grouting delivery pump 2 The inner side of the sealing cover 4, the outer side of the base 92 is evenly spaced and fixedly connected with an inner cleaning shovel plate 93, the outer surface of the inner cleaning shovel plate 93 is fitted with the inner wall of the filter screen 72, and the side of the base 92 close to the filter screen 72 is fixedly connected with an inner hexagonal sleeve frame 94, the inner hexagonal sleeve frame 94 is sleeved on the outer surface of the inner hexagonal plug 91, and the inner auger 95 is fixedly installed inside the base 92. The inner auger 95 is set in a conical shape as a whole. During the use of this equipment, the outer cleaning group 74 and the inner cleaning group 9 are linked by a mechanical structure to achieve all-round cleaning of the filter screen 72. The outer hexagonal plug 65 in the mechanism 6 is inserted into the outer hexagonal sleeve frame 742 of the outer cleaning group 74. When the drive motor 61 drives the rotating shaft 62 and the outer auger 63 to rotate, the outer hexagonal plug 65 drives the outer hexagonal sleeve frame 742, so that the fixed base frame 741 and the outer cleaning shovel 743 on the outside rotate around the outer surface of the filter cover 72. The inner side of the outer cleaning shovel 743 fits the outer surface of the filter cover 72. During the rotation process, large particles of impurities attached to the outer surface of the filter can be removed and scraped clean to prevent impurities from accumulating or slurry solidifying and clogging the filter. At the same time, when the turntable 73 rotates, the filter Through the connection between the hexagonal plug 91 and the hexagonal sleeve 94, the power is transmitted to the base 92 of the inner cleaning group 9, and the base 92 drives the inner cleaning shovels 93 arranged at equal intervals on the outside to rotate against the inner wall of the filter screen 72, and clean the inner surface to prevent the slurry from adhering to the inner wall and solidifying. The conical inner auger 95 inside the base 92 rotates together with the base 92, and cooperates with the outer auger 63 to further improve the fluidity and conveying efficiency of the slurry in the conveying barrel 8, ensure the stability and uniformity of the slurry conveying, and comprehensively guarantee the filtering effect of the filter screen 72 and the normal operation of the grouting device.

[0021] Please refer to Figures 1-6The power mechanism 6 includes a driving motor 61, which is fixedly installed in the middle of the outer side of the sealing cover plate 4 near the side of the grouting delivery pump 2 in the two sealing cover plates 4. The output end of the driving motor 61 passes through the sealing cover plate 4 and is fixedly installed with a rotating shaft 62. The outer surface of the rotating shaft 62 is fixedly installed with an external auger 63, which is sleeved on the outer side of the filter screen cover 72. A conical groove 64 is provided on the side of the external auger 63 near the external cleaning group 74. The filter screen cover 72 is filled in the interior of the conical groove 64. The interior of the conical groove 64 is fixedly connected with an external hexagonal plug 65, which is inserted into the interior of the external cleaning group 74. During the use of this equipment, its power mechanism 6 uses the driving motor 61 as the power source. When the driving motor 61 is started, the output end of the motor drives the rotating shaft 62 to rotate, thereby driving the external auger 63 to rotate. The external auger 63 is sleeved on the outer side of the filter screen cover 72. During the rotation process, the slurry in the conveying cylinder 8 can be stirred. The filter screen 72 is filled in the conical groove 64, which enhances the connection stability and sealing between the outer auger 63 and the filter screen 72. In addition, the outer hexagonal plug 65 inside the conical groove 64 is inserted into the outer cleaning group 74. When the rotating shaft 62 drives the outer auger 63 to rotate, the outer hexagonal plug 65 cooperates with the outer cleaning group 74 to transmit power to the outer cleaning group 74, driving the components in the outer cleaning group 74 to rotate around the outer surface of the filter screen 72, removing and cleaning the large particles of impurities intercepted on the outer surface of the filter screen 72, and scraping and cleaning the filter screen surface to prevent impurities and slurry from solidifying and clogging the filter screen, thereby ensuring the normal operation and filtering effect of the filter mechanism 7.

[0022] Please refer to Figure 1-Figure 7 and Figure 10The cam 332 is fixed on the top of the cam 331 and the cam 333 is fixed on the top of the cam 331. The cam 333 is fixed on the top of the cam 331 and the cam 333 is fixed on the top of the cam 331. When the cam 331 is in the state of being rotated, the gear 334 of the motor 331 is engaged with the gear 332 of the gear 332 and the gear 333 is engaged with the gear 333 of the gear 333.

[0023] The implementation principle of the bored pile grouting device for preventing the clogging of the grouting nozzle in the embodiment of the present application is as follows: during the application of the device, when the device is in operation, after the grouting delivery pump 2 is started, the concrete is pumped into the delivery cylinder 8. The delivery cylinder 8 serves as the main transmission channel. Through its structural design, the concrete is guided and transported so that the concrete is discharged through the discharge pipe 14. A conical filter screen 72 is provided at the key position where the delivery cylinder 8 connects to the grouting nozzle. The filter screen 72 utilizes the unique structural characteristics of the conical surface to, on the one hand, greatly increase the filtration area and significantly improve the filtration efficiency; on the other hand, during the filtration process, the conical surface can provide a guiding path for large particles of impurities, so that the intercepted large particles of impurities slide along the conical surface to the outside of the filter screen 72 to avoid clogging the mesh. This design ensures that the large particles of impurities in the concrete slurry are effectively removed before being delivered to the grouting nozzle, thereby reducing the risk of clogging of the grouting nozzle from the source. At the same time, during the operation of the equipment, the filter mechanism 7, the outer cleaning group 74 and the inner cleaning group 9 cooperate with each other to further optimize the performance of the equipment. After the drive motor 61 is started, the rotating shaft 62 drives the outer auger 63 to rotate, increasing the fluidity and conveying pressure of the slurry in the conveying cylinder 8, promoting the rapid and efficient delivery of the slurry, and reducing the probability of nozzle blockage caused by poor slurry flow. At the same time, the rotating shaft 62 drives the turntable 73 to rotate through the cooperation of the outer hexagonal plug 65 and the outer hexagonal sleeve frame 742, so that the outer cleaning shovel 743 on the mounting frame 12 surrounds the filter The outer surface of the mesh cover 72 rotates to remove large particles of slurry attached to the outer surface of the filter screen and scrape the surface of the filter screen to prevent the slurry from solidifying and clogging the filter screen. The rotation of the turntable 73 also drives the base frame 92 to rotate through the connection between the inner hexagonal plug 91 and the inner hexagonal sleeve frame 94, so that the inner cleaning shovel plate 93 fits the inner wall of the filter screen cover 72 for cleaning, preventing the slurry from adhering to the inner wall and solidifying. In addition, when the base frame 92 rotates, it drives the inner auger 95 to rotate, which works together with the outer auger 63 to further improve the slurry conveying efficiency and ensure the stability and uniformity of the conveying process. When the cam 332 is in the unlock state, the cam 333 is unlocked, and the cam 334 is unlocked, so that the cam 333 can be unlocked quickly.

[0024] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bored pile grouting device for preventing clogging of a grouting nozzle, characterized in that; The invention comprises a guide rail (1) and a grouting delivery pump (2), wherein both ends of the guide rail (1) are movably connected to a displacement mechanism (3), the bottom of the displacement mechanism (3) is fixedly connected to a sealing cover plate (4), the grouting delivery pump (2) is arranged on one side of the guide rail (1), the sliding end of the grouting delivery pump (2) is fixedly connected to a connecting pipe (5), the outer end of the connecting pipe (5) is fixedly installed with a delivery cylinder (8), the top of the delivery cylinder (8) is fixedly connected to the bottom of the guide rail (1), and the interior of the delivery cylinder (8) is fixedly installed with a filter. A power mechanism (6) is movably installed on a side of the conveying cylinder (8) close to the input end, and the outer side of the power mechanism (6) can be connected to a sealing cover plate (4) close to the side of the grouting conveying pump (2). An inner cleaning group (9) is installed on a side of the filter mechanism (7) away from the power mechanism (6), and the end of the inner cleaning group (9) extends to the inner side of the filter assembly. A discharge pipe (14) is fixedly installed at the lower end of the sealing cover plate (4) away from the conveying pump, and the outer end of the discharge pipe (14) is fixedly connected to a connecting flange (15); The filtering mechanism (7) includes a mounting ring (71), which is fixedly mounted on one end of the conveying barrel (8) away from the grouting conveying pump (2), and a filter screen (72) is fixedly mounted on the inner side of the mounting ring (71). The filter screen (72) is arranged in a cone shape as a whole, and the inner cleaning group (9) is arranged inside the filter screen (72). The outer end of the conical surface of the filter screen (72) is rotatably connected to a turntable (73), the outer side of the turntable (73) is transmission-connected to the power mechanism (6), and the inner side of the turntable (73) is transmission-connected to the inner cleaning group (9). The outer cleaning group (74) is provided on the side of the turntable (73) away from the inner cleaning group (9), and the outer cleaning group (74) is arranged on the outer side of the filter screen (72).

2. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 1, characterized in that: A mounting seat (10) is fixedly mounted on the bottom of the grouting delivery pump (2), and a mounting base plate (11) is fixedly mounted on the bottom of the mounting seat (10).

3. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 2, characterized in that: Mounting frames (12) are fixedly mounted on the front and back sides of both ends of the guide rail (1), and mounting holes (13) are provided at the outer ends of the mounting frames (12), and the mounting holes (13) are configured as countersunk holes.

4. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 1, characterized in that: The power mechanism (6) includes a drive motor (61), which is fixedly mounted in the middle of the outer side of the sealing cover plate (4) close to the grouting delivery pump (2) of the two sealing cover plates (4). The output end of the drive motor (61) passes through the sealing cover plate (4) and is fixedly mounted with a rotating shaft (62). The outer surface of the rotating shaft (62) is fixedly mounted with an external auger (63), and the external auger (63) is sleeved on the outer side of the filter screen cover (72).

5. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 4, characterized in that: A conical groove (64) is provided on one side of the outer auger (63) close to the outer cleaning group (74), the filter screen (72) is filled in the interior of the conical groove (64), an outer hexagonal plug (65) is fixedly connected to the interior of the conical groove (64), and the outer hexagonal plug (65) is inserted into the interior of the outer cleaning group (74).

6. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 5, characterized in that: The external cleaning group (74) comprises a fixed base frame (741), the fixed base frame (741) being fixedly mounted on a side of the turntable (73) close to the drive motor (61), an external hexagonal sleeve frame (742) being fixedly mounted on the outer side of the fixed base frame (741), the external hexagonal insert (65) being inserted into the interior of the external hexagonal sleeve frame (742), an external cleaning shovel (743) being mounted on the outer side of the fixed base frame (741) via bolts, and the inner side of the external cleaning shovel (743) being fitted and connected to the outer surface of the filter screen cover (72).

7. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 6, characterized in that: The inner cleaning group (9) comprises an inner hexagonal plug (91) and a base frame (92), wherein the base frame (92) is fixedly mounted on the inner side of the sealing cover plate (4) of the two sealing cover plates (4) away from the grouting delivery pump (2), and the outer side of the base frame (92) is fixedly connected with inner cleaning shovel plates (93) arranged in a ring shape at equal intervals, and the outer surface of the inner cleaning shovel plates (93) is fitted and connected to the inner wall of the filter screen cover (72), and the side of the base frame (92) close to the filter screen cover (72) is fixedly connected with an inner hexagonal sleeve frame (94), and the inner hexagonal sleeve frame (94) is sleeved on the outer surface of the inner hexagonal plug (91).

8. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 7, characterized in that: An inner auger (95) is fixedly installed inside the base frame (92), and the inner auger (95) is arranged in a cone shape as a whole.

9. The bored pile grouting device for preventing clogging of the grouting nozzle according to claim 1, characterized in that: The displacement mechanism (3) includes a slider (31), the slider (31) is slidably connected to the inner ends of the guide rail (1), the outer surface of the slider (31) is fixedly connected to a slide frame (32), the slide frame (32) is slidably connected to the outer surface of the guide rail (1), the bottom of the slider (31) is connected to the sealing cover plate (4), and the top of the slide frame (32) is fixedly mounted with a driving assembly (33).

10. A bored pile grouting device for preventing clogging of a grouting nozzle according to claim 9, characterized in that: The driving assembly (33) includes a side plate (331) and a transmission rack (332), wherein the side plate (331) is fixedly mounted on one side of the slide frame (32), a brake motor (333) is fixedly mounted on the outer side of the side plate (331), an output end of the brake motor (333) passes through the side plate (331) and is fixedly mounted with a transmission gear (334), the transmission rack (332) is fixedly connected to the top of the guide rail (1), the transmission rack (332) and the transmission gear (334) are meshed and connected, and the cross-sectional shape of the internal cavity of the slider (31) and the guide rail (1) is set to be a convex shape.

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