Anti-blocking type deep mixing pile grouting structure

Abstract

The invention relates to the technical field of stirring pile grouting, and discloses an anti-blocking type deep stirring pile grouting structure which comprises a stirring shaft, a cleaning mechanism is arranged on the inner side of the stirring shaft and used for preventing a pipeline or a nozzle from being blocked, the cleaning mechanism comprises a support, the support is fixedly connected to the top of the outer side of the stirring shaft, and the support is fixedly connected to the outer side of the stirring shaft. A connecting pipe is rotatably connected to the top of the inner side of the stirring shaft, the top end of the connecting pipe penetrates through the support, a spiral scraper blade is fixedly connected to the bottom of the connecting pipe, a hollow pipe is fixedly connected to the bottom of the stirring shaft, and a driving assembly is arranged on the outer side of the connecting pipe. The spiral scraping plate can be driven to rotate through the connecting pipe, slurry in the stirring shaft is scraped, the cleaning plate is driven to move through the bevel gear, slurry at the slurry outlet is scraped, and it is ensured that the grouting pipeline and the slurry outlet cannot be blocked in the grouting process.

Description

Technical Field

[0001] The invention relates to the technical field of mixing pile grouting, in particular to an anti-blocking deep mixing pile grouting structure. Background Art

[0002] Deep mixing piles are a foundation treatment method that uses cement or lime materials as a curing agent. Special mixing machinery is used to forcibly mix soft soil and the curing agent deep in the foundation, so that the soft soil is hardened to form a pile body with integrity, water stability and a certain strength. It is widely used in soft soil foundation treatment.

[0003] With the acceleration of urbanization and the expansion of infrastructure construction, a large number of projects are facing adverse geological conditions such as deep soft soil and silty soil. Traditional foundation treatment methods have limitations in treatment depth, cost and efficiency, and are difficult to meet the requirements of high-rise buildings and highway projects for foundation bearing capacity and stability. At this time, a deep mixing pile grouting structure is needed.

[0004] The deep mixing pile grouting structure currently on the market is mainly composed of a mixing shaft, a mixing pile drill bit and a mixing blade. When in use, the mixing shaft drills into the soil through the drill bit, and the injected curing agent and foundation soil are forcibly mixed through the mixing blade, thereby forming a composite foundation with high strength. However, the device cannot adjust the grouting pressure according to the drilling depth of the mixing pile drill bit, resulting in the slurry easily being lost along the soil cracks or around the pile during the grouting process. To solve the above problems, the existing technology adopts a segmented pressure regulation method to use differentiated pressures for grouting at different depths. However, the grouting structure is prone to clogging of the pipeline or nozzle due to slurry precipitation, soil particle intrusion or curing agent condensation during long-term construction. At present, the industry mainly alleviates the blockage by optimizing grouting parameters (such as pressure and flow) and improving the design of the mixing head, but the effect is limited, and frequent shutdowns for cleaning are required, which seriously reduces the construction efficiency, and the uniformity of pile formation is difficult to guarantee, which cannot meet the needs of users. Summary of the Invention

[0005] The purpose of the present invention is to provide an anti-blocking deep mixing pile grouting structure, which solves the problem that the pipeline or nozzle of the deep mixing pile grouting structure may be blocked when in use.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A blockage-proof deep mixing pile grouting structure includes a mixing shaft, a cleaning mechanism is provided on the inner side of the mixing shaft, and the cleaning mechanism is used to prevent the pipe or nozzle from being blocked. A telescopic component is provided on the outer side of the mixing shaft, and the telescopic component is used to facilitate the adjustment of the thickness of the mixing pile. A disassembly mechanism is provided at the bottom of the mixing shaft, and the disassembly mechanism is used to facilitate the replacement of the drill bit. The cleaning mechanism includes a bracket, which is fixedly connected to the outer top of the stirring shaft. The inner top of the stirring shaft is rotatably connected to a connecting pipe, the top of the connecting pipe passes through the bracket, the bottom of the connecting pipe is fixedly connected to a spiral scraper, the bottom of the stirring shaft is fixedly connected to a hollow tube, a driving assembly is provided on the outer side of the connecting pipe, and a transmission assembly is provided on the inner side of the hollow tube.

[0007] Preferably, the telescopic assembly includes a movable ring, which is slidably connected to the outside of the stirring shaft, and the bottom of the movable ring is fixedly connected to support rods on all sides, and a plurality of support blocks are fixedly connected to the outside of the support rods at equal intervals, and one side of the support block is rotatably connected to a connecting plate, and the outside of the stirring shaft is rotatably connected to a plurality of stirring blades on all sides, and the tops of the plurality of stirring blades are fixedly connected to a connecting seat, and the tops of the connecting seats are rotatably connected to the connecting plate, and a lifting assembly is provided on the outside of the movable ring.

[0008] Preferably, the disassembly mechanism includes a hollow block, which is fixedly connected to the bottom of the stirring shaft, and movable plates are provided around the inside of the hollow block, and a clamping block is fixedly connected to one side of multiple movable plates. A stirring pile drill bit is provided at the bottom of the hollow block, and a plug-in block is fixedly connected to the top of the stirring pile drill bit, and the top of the plug-in block passes through the hollow block and engages with the clamping block. A linkage component is provided in the middle part of the inner side of the hollow block, and reset components are provided around the inner side of the hollow block, and a control component is provided on the left wall of the movable plate on the left side.

[0009] Preferably, the drive assembly includes a gear ring, which is fixedly connected to the middle part of the outer side of the connecting pipe. A motor is fixedly connected to the top left side of the bracket. The output end of the motor passes through the bracket and is fixedly connected to a spur gear, which is meshed with the gear ring.

[0010] Preferably, the transmission assembly includes a face gear, which is rotatably connected to the top of the hollow tube, and the top of the face gear is fixedly connected to the bottom of the spiral scraper. The left and right sides of the interior of the hollow tube are rotatably connected with helical gears, and the top of the helical gear is meshed with the face gear. The upper and lower sides of the interior of the helical gear are fixedly connected with cleaning plates.

[0011] Preferably, the lifting assembly includes a threaded rod, and the two threaded rods are rotatably connected to the front and rear sides of the top of the bracket respectively. The bottom end of the threaded rod passes through the bracket and is threadedly connected to a slider, and the outer side of the slider is fixedly connected to the movable ring.

[0012] Preferably, the linkage assembly includes a rotating column, which is rotatably connected to the inner top of the hollow block, and the bottom of the rotating column is fixedly connected to a support plate, and the four corners of the top of the support plate are rotatably connected to connecting rods, and one end of the connecting rod is fixedly connected to the movable plate.

[0013] Preferably, the reset assembly includes a guide rod, and a plurality of the guide rods are respectively arranged around the interior of the hollow block, one end of the guide rod passes through the movable plate, and a spring is arranged on the outside of the guide rod.

[0014] Preferably, the control assembly 48 includes a shift rod, which is fixedly connected to the left wall of the left movable plate. The left end of the shift rod passes through the hollow block and is fixedly connected to a shift column.

[0015] Preferably, the inner size of the stirring shaft matches the size of the spiral scraper, and slurry outlets are provided at the bottom of the left and right sides of the stirring shaft.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects: 1. The present invention drives the flat gear to rotate through the motor, and through the meshing transmission of the flat gear and the gear ring, the connecting pipe can drive the spiral scraper to rotate, and scrape the slurry inside the stirring shaft, and the spiral scraper will drive the face gear to rotate, and through the meshing transmission of the bevel gear and the face gear, drive the cleaning plate to move, and scrape the slurry at the slurry outlet, ensuring that the grouting pipe and the slurry outlet will not be blocked during the grouting process, thereby improving the construction efficiency of the device and meeting the needs of users.

[0017] 2. The present invention drives the slider to move by rotating the threaded rod, and the slider drives the movable ring to move, and the support rod drives the support block accordingly. The support block can push the connecting seat to move through the connecting plate, so that the stirring blade rotates and the extension angle of the stirring blade is adjusted. By adjusting the stirring range of the stirring blade, the thickness of the stirring pile can be adjusted, thereby improving the convenience of using the device.

[0018] 3. The present invention drives the left movable plate to move through the shift rod, and links with the support plate through the connecting rod, so that the movable plates on all sides move simultaneously, driving multiple blocks to disengage from the engagement with the plug-in blocks, thereby conveniently disassembling and replacing the mixing pile drill bit, meeting the use requirements of different soil layers, and improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention; Figure 2 for Figure 1 A magnified view of point A in the figure; Figure 3 It is a front view of the present invention; Figure 4 It is a partial structural cross-sectional view of the present invention; Figure 5 for Figure 4 Enlarged view of point B in FIG. Figure 6 It is a partial structural breakdown diagram of the present invention; Figure 7 It is a schematic diagram of the local structure of the present invention; Figure 8 It is a partial structural cross-sectional view of the disassembly mechanism of the present invention; Figure 9 This is a partial structural breakdown diagram of the disassembly mechanism of the present invention.

[0020] Among them, 1. stirring shaft; 2. cleaning mechanism; 21. bracket; 22. connecting pipe; 23. spiral scraper; 24. hollow pipe; 25. pulp outlet; 26. drive assembly; 261. gear ring; 262. motor; 263. flat gear; 27. transmission assembly; 271. face gear; 272. bevel gear; 273. cleaning plate; 3. telescopic assembly; 31. movable ring; 32. support rod; 33. support block; 34. connecting plate; 35. stirring Mixing blade; 36. Connecting seat; 37. Lifting assembly; 371. Threaded rod; 372. Slider; 4. Disassembly mechanism; 41. Hollow block; 42. Movable plate; 43. Block; 44. Mixing pile drill bit; 45. Plug-in block; 46. Linkage assembly; 461. Rotating column; 462. Support plate; 463. Connecting rod; 47. Reset assembly; 471. Guide rod; 472. Spring; 48. Control assembly; 481. Toggle rod; 482. Toggle column. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 -Attached Figure 9 , the present invention is described in further detail.

[0022] The present invention provides an anti-blocking deep mixing pile grouting structure, comprising a mixing shaft 1, a cleaning mechanism 2 is provided on the inner side of the mixing shaft 1, and the cleaning mechanism 2 is used to prevent the pipe or nozzle from being blocked; a telescopic component 3 is provided on the outer side of the mixing shaft 1, and the telescopic component 3 is used to facilitate the adjustment of the thickness of the mixing pile; a disassembly mechanism 4 is provided at the bottom of the mixing shaft 1, and the disassembly mechanism 4 is used to facilitate the replacement of the drill bit; The cleaning mechanism 2 includes a bracket 21, which is fixedly connected to the outer top of the stirring shaft 1. The inner top of the stirring shaft 1 is rotatably connected to a connecting pipe 22. The top of the connecting pipe 22 passes through the bracket 21. The bottom of the connecting pipe 22 is fixedly connected to a spiral scraper 23. The connecting pipe 22 can drive the spiral scraper 23 to rotate. The bottom of the stirring shaft 1 is fixedly connected to a hollow tube 24. A driving assembly 26 is provided on the outer side of the connecting pipe 22. A transmission assembly 27 is provided on the inner side of the hollow tube 24. The driving assembly 26 includes a gear ring 261. The gear ring 261 is fixedly connected to the middle part of the outer side of the connecting pipe 22. A motor 262 is fixedly connected to the left side of the top of the bracket 21. The output end of the motor 262 passes through the bracket 21 and is fixedly connected to a flat gear 26. 3. The motor 262 drives the flat gear 263 to rotate. The flat gear 263 is meshed with the gear ring 261. When the flat gear 263 rotates, the gear ring 261 drives the connecting pipe 22 to rotate. The transmission assembly 27 includes a face gear 271. The face gear 271 is rotatably connected to the top of the hollow tube 24. The top of the face gear 271 is fixedly connected to the bottom of the spiral scraper 23. The spiral scraper 23 drives the face gear 271 to rotate. The left and right sides of the inside of the hollow tube 24 are rotatably connected with bevel gears 272. The top of the bevel gear 272 is meshed with the face gear 271. The upper and lower sides of the inside of the bevel gear 272 are fixedly connected with cleaning plates 273. When the face gear 271 rotates, the bevel gear 272 drives the cleaning plate 273 to rotate accordingly. Specifically, when the device is used for pile grouting, the motor 262 drives the flat gear 263 to rotate. Since the flat gear 263 is engaged with the gear ring 261, when the flat gear 263 rotates, the gear ring 261 will also rotate accordingly. The rotation of the gear ring 261 will further drive the rotation of the connecting pipe 22. The rotation of the connecting pipe 22 will cause the spiral scraper 23 to start rotating, thereby scraping the slurry inside the stirring shaft 1 to prevent the slurry from settling during the grouting process. At the same time, the rotation of the spiral scraper 23 will also drive the rotation of the face gear 271. Since the face gear 271 is engaged with the bevel gear 272, the bevel gear 272 will also rotate accordingly, thereby driving the cleaning plate 273 to move, thereby ensuring that during the grouting process, the grouting pipe and the slurry outlet 25 will not be blocked, thereby improving the construction efficiency of the device and meeting the needs of users.

[0023] The telescopic assembly 3 includes a movable ring 31, which is slidably connected to the outside of the stirring shaft 1. The bottom of the movable ring 31 is fixedly connected to a support rod 32 on all sides. A plurality of support blocks 33 are fixedly connected to the outside of the support rod 32 at equal intervals. The support rod 32 drives the support block 33 to move. One side of the support block 33 is rotatably connected to a connecting plate 34. A plurality of stirring blades 35 are rotatably connected to the outside of the stirring shaft 1 at equal intervals. The tops of the plurality of stirring blades 35 are fixedly connected to a connecting seat 36. The support block 33 can push the connecting seat through the connecting plate 34. 36 moves, thereby driving the stirring blade 35 to rotate. The top of the connecting seat 36 is rotatably connected to the connecting plate 34. A lifting assembly 37 is provided on the outer side of the movable ring 31. The lifting assembly 37 includes a threaded rod 371. The two threaded rods 371 are rotatably connected to the front and rear sides of the top of the bracket 21 respectively. The bottom end of the threaded rod 371 passes through the bracket 21 and is threadedly connected to a slider 372. When the threaded rod 371 rotates, the slider 372 will move accordingly. The outer side of the slider 372 is fixedly connected to the movable ring 31, and the slider 372 will drive the movable ring 31 to move. Specifically, when the thickness of the deep mixing pile needs to be adjusted, the threaded rods 371 on both sides are rotated. As the threaded rods 371 rotate, the slider 372 will move accordingly, and the movement of the slider 372 will further drive the movable ring 31 to move. Under the action of the slider 372, the movable ring 31 will push the support rod 32 to move, and the support rod 32 will drive multiple support blocks 33 to move synchronously. The support block can push the connecting seat 36 to move through the connecting plate 34, thereby driving the stirring blade 35 to rotate, adjusting the extension angle of the stirring blade 35, and then adjusting the stirring range of the stirring blade 35, which can effectively control the thickness of the mixing pile and improve the convenience of using the device.

[0024] The disassembly mechanism 4 includes a hollow block 41, which is fixedly connected to the bottom of the stirring shaft 1. A movable plate 42 is provided around the inside of the hollow block 41. A clamping block 43 is fixedly connected to one side of the multiple movable plates 42. The movable plate 42 drives the clamping block 43 to move. A mixing pile drill bit 44 is provided at the bottom of the hollow block 41. A plug-in block 45 is fixedly connected to the top of the mixing pile drill bit 44. The top of the plug-in block 45 passes through the hollow block 41 and is engaged with the clamping block 43, so that the plug-in block 45 can be fixed. A linkage component 46 is provided on the inner middle part of the hollow block 41. Reset components 47 are provided around the inner side of the hollow block 41. A control component 48 is provided on the left wall of the left movable plate 42. The component 46 includes a rotating column 461, which is rotatably connected to the inner top of the hollow block 41. The bottom of the rotating column 461 is fixedly connected to a support plate 462. The four corners of the top of the support plate 462 are rotatably connected to connecting rods 463. One end of the connecting rod 463 is fixedly connected to the movable plate 42. Through the linkage between the connecting rod 463 and the support plate 462, the movement of multiple movable plates 42 is kept consistent. The control component 48 includes a dial rod 481, which is fixedly connected to the left wall of the left movable plate 42. The left end of the dial rod 481 passes through the hollow block 41 and is fixedly connected to a dial column 482. The dial column 482 drives the movable plate 42 to move through the dial rod 481. Specifically, when construction needs to be carried out on different soil layers, by pulling the toggle column 482, the toggle column 482 can drive the movable plate 42 on the left to move through the toggle rod 481 connected thereto, and since the movable plates 42 on the surrounding areas are linked by the connecting rod 463 and the support plate 462, when the movable plate 42 on the left moves, the movable plates 42 on the surrounding areas will be pushed to move together, so that multiple blocking blocks 43 can be disengaged from the blocking state with the plug-in block 45, so that the mixing pile drill bit 44 can be replaced more conveniently and quickly, and the mixing pile drill bit 44 can be replaced according to different soil layer conditions, thereby improving the practicality of the device.

[0025] The reset assembly 47 includes a plurality of guide rods 471 disposed around the interior of the hollow block 41. One end of the guide rod 471 passes through the movable plate 42. A spring 472 is disposed on the outer side of the guide rod 471. The spring 472 can push the movable plate 42 to move, causing the locking block 43 to engage with the plug-in block 45. Specifically, during installation, the spring 472 can push the movable plate 42 to move, so that the locking block 43 is engaged with the plug-in block 45 .

[0026] The inner size of the stirring shaft 1 matches the size of the spiral scraper 23. The left and right bottoms of the stirring shaft 1 are both provided with slurry outlets 25 for spraying slurry. Specifically, the inner size of the stirring shaft 1 matches the size of the spiral scraper 23, so that the slurry inside the stirring shaft 1 will not precipitate, and the slurry outlet 25 is used to spray the slurry out.

[0027] Working principle: When the device is used for grouting of mixing piles, the motor 262 drives the flat gear 263 to rotate, and since the flat gear 263 is meshed with the gear ring 261, the gear ring 261 will drive the connecting pipe 22 to rotate, thereby driving the spiral scraper 23 to rotate, scraping the slurry inside the stirring shaft 1 to prevent it from settling, and the spiral scraper 23 drives the face gear 271 to rotate, and since the bevel gear 272 is meshed with the face gear 271, the bevel gear 272 will drive the cleaning plate 273 to move, scraping the slurry at the slurry outlet 25, ensuring that the grouting pipe and the slurry outlet 25 will not be blocked during the grouting process; When the thickness of the deep mixing pile needs to be adjusted, the threaded rods 371 on both sides are rotated. When the threaded rods 371 rotate, the sliders 372 will move accordingly, and drive the movable ring 31 to move. When the movable ring 31 moves, it will drive the support rods 32 to move, so that the multiple support blocks 33 move at the same time. When the support blocks 33 move, the connecting plate 34 can push the connecting seat 36 to move, and the connecting seat 36 will drive the stirring blade 35 to rotate, so as to adjust the extension angle of the stirring blade 35, thereby adjusting the stirring range of the stirring blade 35 and adjusting the thickness of the mixing pile. And when it is necessary to construct different soil layers, the toggle column 482 is pulled, and the toggle column 482 will drive the left movable plate 42 to move through the toggle rod 481. Since the movable plates 42 on the surrounding sides are linked with the supporting plate 462 through the connecting rod 463, when the left movable plate 42 moves, it will push the movable plates 42 on the surrounding sides to move at the same time, thereby driving multiple blocking blocks 43 to disengage from the plug-in blocks 45, so that the mixing pile drill bit 44 can be replaced more conveniently, so that it can be used for different soil layers.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A blocking-proof deep mixing pile grouting structure, comprising a mixing shaft (1), characterized in that: A cleaning mechanism (2) is provided on the inner side of the stirring shaft (1), and the cleaning mechanism (2) is used to prevent the pipe or nozzle from being blocked. A telescopic component (3) is provided on the outer side of the stirring shaft (1), and the telescopic component (3) is used to facilitate the adjustment of the thickness of the stirring pile. A disassembly mechanism (4) is provided on the bottom of the stirring shaft (1), and the disassembly mechanism (4) is used to facilitate the replacement of the drill bit. The cleaning mechanism (2) comprises a bracket (21), the bracket (21) is fixedly connected to the outer top of the stirring shaft (1), the inner top of the stirring shaft (1) is rotatably connected to a connecting pipe (22), the top end of the connecting pipe (22) passes through the bracket (21), the bottom of the connecting pipe (22) is fixedly connected to a spiral scraper (23), the bottom of the stirring shaft (1) is fixedly connected to a hollow tube (24), the outer side of the connecting pipe (22) is provided with a driving assembly (26), and the inner side of the hollow tube (24) is provided with a transmission assembly (27).

2. The anti-blocking deep mixing pile grouting structure according to claim 1, characterized in that: The telescopic assembly (3) includes a movable ring (31), the movable ring (31) is slidably connected to the outside of the stirring shaft (1), the bottom of the movable ring (31) is fixedly connected to support rods (32) on all sides, the outside of the support rods (32) are fixedly connected to multiple support blocks (33) at equal intervals, one side of the support block (33) is rotatably connected to a connecting plate (34), the outside of the stirring shaft (1) is rotatably connected to multiple stirring blades (35), the tops of the multiple stirring blades (35) are fixedly connected to a connecting seat (36), the top of the connecting seat (36) is rotatably connected to the connecting plate (34), and a lifting assembly (37) is provided on the outside of the movable ring (31).

3. The anti-blocking deep mixing pile grouting structure according to claim 1, characterized in that: The disassembly mechanism (4) comprises a hollow block (41), the hollow block (41) being fixedly connected to the bottom of the stirring shaft (1), movable plates (42) being provided around the inside of the hollow block (41), a clamping block (43) being fixedly connected to one side of a plurality of the movable plates (42), a mixing pile drill bit (44) being provided at the bottom of the hollow block (41), a plug-in block (45) being fixedly connected to the top of the mixing pile drill bit (44), the top of the plug-in block (45) passing through the hollow block (41) and being engaged with the clamping block (43), a linkage assembly (46) being provided at the middle portion of the inner side of the hollow block (41), a reset assembly (47) being provided around the inner side of the hollow block (41), and a control assembly (48) being provided on the left wall of the left movable plate (42).

4. The anti-blocking deep mixing pile grouting structure according to claim 1, characterized in that: The driving assembly (26) comprises a gear ring (261), the gear ring (261) being fixedly connected to the middle portion of the outer side of the connecting tube (22), a motor (262) being fixedly connected to the left side of the top of the bracket (21), an output end of the motor (262) passing through the bracket (21) and being fixedly connected to a spur gear (263), and the spur gear (263) being meshedly connected to the gear ring (261).

5. The anti-blocking deep mixing pile grouting structure according to claim 1, characterized in that: The transmission assembly (27) includes a face gear (271), the face gear (271) is rotatably connected to the top of the hollow tube (24), the top of the face gear (271) is fixedly connected to the bottom of the spiral scraper (23), the left and right sides of the interior of the hollow tube (24) are rotatably connected to bevel gears (272), the top of the bevel gear (272) is meshed with the face gear (271), and the upper and lower sides of the interior of the bevel gear (272) are fixedly connected to cleaning plates (273).

6. The anti-blocking deep mixing pile grouting structure according to claim 2, characterized in that: The lifting assembly (37) includes a threaded rod (371), wherein two threaded rods (371) are rotatably connected to the front and rear sides of the top of the bracket (21), respectively. The bottom end of the threaded rod (371) passes through the bracket (21) and is threadedly connected to a slider (372). The outer side of the slider (372) is fixedly connected to the movable ring (31).

7. The anti-blocking deep mixing pile grouting structure according to claim 3, characterized in that: The linkage assembly (46) includes a rotating column (461), the rotating column (461) is rotatably connected to the inner top of the hollow block (41), the bottom of the rotating column (461) is fixedly connected to a support plate (462), and the four corners of the top of the support plate (462) are rotatably connected to connecting rods (463), and one end of the connecting rod (463) is fixedly connected to the movable plate (42).

8. The anti-blocking deep mixing pile grouting structure according to claim 3, characterized in that: The reset assembly (47) includes a guide rod (471), and a plurality of the guide rods (471) are respectively arranged around the inside of the hollow block (41). One end of the guide rod (471) passes through the movable plate (42), and a spring (472) is arranged on the outside of the guide rod (471).

9. The anti-blocking deep mixing pile grouting structure according to claim 3, characterized in that: The control assembly (48) includes a shift rod (481), which is fixedly connected to the left wall of the left movable plate (42). The left end of the shift rod (481) passes through the hollow block (41) and is fixedly connected to a shift column (482).

10. The anti-blocking deep mixing pile grouting structure according to claim 1, characterized in that: The inner dimensions of the stirring shaft (1) match those of the spiral scraper (23), and slurry outlets (25) are provided at the bottoms of the left and right sides of the stirring shaft (1).

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