Pile side grouting device capable of preventing particles from blocking

Abstract

The invention discloses a pile side grouting device capable of preventing particles from blocking, the pile side grouting device comprises a main grout outlet pipe, a grout pump arranged on the main grout outlet pipe and a plurality of spraying assemblies fixedly arranged on one side of the main grout outlet pipe, and each spraying assembly comprises a second grout spraying pipe. After the first slurry spraying pipe is blocked, the pressure in the first slurry spraying pipe is increased, the first slurry spraying pipe drives the elastic force increasing type wave elastic piece to fall off from the clamping sleeve, the pressure of slurry in the first slurry spraying pipe does not exist, a spring drives an inserting rod and a linkage pipe to abut against a baffle ring, and the pressure in the second slurry spraying pipe is increased when a side slurry outlet hole is closed; and a through hole in a nozzle of the second spray head is larger than a through hole in a nozzle of the first spray head, blockage can be prevented conveniently, and the pressure of the slurry in the spraying assembly and the main slurry outlet pipe can be increased through a slurry pumping water pump.

Description

Technical Field

[0001] This invention relates to the field of pile side grouting technology, and more specifically, to a device for preventing particles from clogging the pile side grouting. Background Technology

[0002] Pile side grouting refers to a construction technique in which, after a cast-in-place pile has been formed, cement grout is injected into the soil layer beside the pile under certain pressure through a grouting pipe pre-embedded in the pile body and a grouting valve connected to it. The core purpose of this technique is to reinforce the mud skin around the pile and the soil beside the pile through the grout, significantly increasing the pile side friction resistance, thereby enhancing the bearing capacity of a single pile and controlling settlement.

[0003] Currently, patent publication number CN222666811U discloses a device for post-grouting of cast-in-place piles, including at least two in-pile grouting pipes and a pile-side grouting pipe fixed to a reinforcing cage, with the bottom ends of the pipes penetrating a first fixing plate. The ends of the in-pile grouting pipes are fixedly connected to grouting nozzles, and the openings of two adjacent grouting nozzles are connected by a flexible hose. The flexible hose is fixed to the opening of the grouting nozzle by a non-removable fixing ring. The device for post-grouting of cast-in-place piles provided by this utility model forms a closed ring by connecting the flexible hose to the opening of the grouting nozzle, which expands its bearing area and can solidify the sediment at the bottom of the pile during grouting.

[0004] However, existing technologies have some problems: although shaking or loosening the grout nozzle can prevent clogging to some extent, clogging of the grout nozzle is still a pain point in the industry. Moreover, after the grout nozzle is clogged, there is no solution to prepare a second grout nozzle with a larger grout outlet to compensate for the clogging. Therefore, we propose a pile side grouting device to prevent particle clogging. Summary of the Invention

[0005] One objective of this invention is to provide a new technical solution for preventing particles from clogging the pile side grouting device.

[0006] According to a first aspect of the present invention, a grouting device for preventing particle blockage in pile sides is provided, comprising a main grout outlet pipe, a grout pump disposed on the main grout outlet pipe, and a plurality of spraying components fixedly disposed on one side of the main grout outlet pipe. The spraying components include a second spraying pipe, a linkage pipe slidably sleeved on the second spraying pipe, a first spraying pipe slidably sleeved on the linkage pipe, and a sealing pipe sleeved on the first spraying pipe. The sealing pipe is fixedly sleeved on the second spraying pipe. Side grout outlet holes are provided on both sides of the second spraying pipe. The first spraying pipe slides or detaches on the linkage pipe and the second spraying pipe by a pressurized detachment component.

[0007] Optionally, the pressurized detachment assembly includes a limiting guide rod fixedly disposed at the top and bottom of the second shotcrete pipe, a first limiting groove integrally formed at the top and bottom of the linkage pipe, and a second limiting groove fixedly disposed at the top and bottom of the inner ring of the first shotcrete pipe. The first limiting groove is movably sleeved on the limiting guide rod, and the second limiting groove is movably sleeved on the first limiting groove.

[0008] Optionally, the pressurized detachment assembly further includes side fixing sleeves fixedly disposed on both sides of the second shotcrete pipe, insert rods fixedly disposed on both sides of the end of the linkage pipe, and springs movably sleeved on the insert rods. The insert rods movably pass through the side fixing sleeves, and the springs are located between the side fixing sleeves and the linkage pipe.

[0009] Optionally, the pressurization and shedding assembly further includes elastic incremental wave springs fixedly disposed on both sides of the end of the first shotcrete pipe and clamping sleeves fixedly disposed on both sides of the linkage pipe. The elastic incremental wave springs move through the clamping sleeves and are clamped on the clamping sleeves.

[0010] Optionally, the pressurized release assembly further includes an adjusting sleeve movably sleeved on the insert rod, the adjusting sleeve and the insert rod being fixedly connected by bolts, and the insert rod having multiple threaded holes.

[0011] Optionally, the end of the first spray pipe has a first nozzle, and the first nozzle has a plurality of nozzles.

[0012] Optionally, a plurality of fixing rods are fixedly provided at the end of the second spray pipe, and a second nozzle is fixedly provided at the end of the plurality of fixing rods, the second nozzle having a plurality of nozzles.

[0013] Optionally, the inner ring of the sealing pipe has a rubber layer, and a retaining ring is fixedly sleeved on the second spray pipe.

[0014] Optionally, the top and bottom of the sealing pipe end have extension blocks, which are fixedly connected to the second shotcrete pipe by bolts.

[0015] According to the embodiments disclosed in this invention, slurry flows into the first spraying pipe from the side outlet and the second nozzle. After the first spraying pipe becomes blocked, the pressure inside increases, causing the first spraying pipe to disengage the elastically increasing wave spring from the sleeve. Without the pressure of the slurry in the first spraying pipe, the spring drives the insert rod and the linkage tube to press against the retaining ring, closing the side outlet. The increased pressure in the second spraying pipe facilitates the activation of the second nozzle on the second spraying pipe to spray the slurry. Furthermore, the through-hole in the nozzle of the second nozzle is larger than the through-hole in the nozzle of the first nozzle. Large size facilitates clogging prevention. The grout pump increases the pressure of the grout in the spraying components and main grout outlet pipe, making spraying easier. A dual grouting scheme with a first and second grouting pipe is adopted. Through the pressurization and detachment component, when the first grouting pipe is blocked, the linkage pipe and side grout outlet are automatically closed, and the second nozzle is activated for spraying. Even if the nozzle of the first nozzle is blocked, the second grouting pipe and the second nozzle can still be used to spray grout, achieving the effect of allowing a second spraying even if the first grouting pipe and the first nozzle are blocked.

[0016] This design ensures that even if one grouting pipe becomes blocked, it will automatically detach, allowing the other grouting pipe to continue spraying grout, thus guaranteeing the continuity of grouting and ensuring the smooth progress of the grouting work.

[0017] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0019] Figure 1 A schematic diagram of the overall three-dimensional structure of a pile-side grouting device for preventing particle blockage;

[0020] Figure 2 A three-dimensional structural schematic diagram of a spraying component for a pile-side grouting device to prevent particle blockage;

[0021] Figure 3 A schematic diagram of the exploded structure of a spraying component for a pile-side grouting device to prevent particle blockage;

[0022] Figure 4 A partial three-dimensional structural schematic diagram of a pile-side grouting device for preventing particle blockage;

[0023] Figure 5 A schematic diagram of a partial explosive structure of a pile-side grouting device to prevent particle blockage;

[0024] Figure 6A schematic diagram of a partial explosive structure of a pile-side grouting device to prevent particle blockage;

[0025] Figure 7 A partial three-dimensional structural schematic diagram of a pile-side grouting device for preventing particle blockage;

[0026] Figure 8 A partial three-dimensional structural schematic diagram of a pile-side grouting device for preventing particle blockage;

[0027] Figure 9 A schematic diagram of the cross-sectional structure of an elastic incremental wave spring sheet for a pile-side grouting device to prevent particle blockage;

[0028] Figure 10 A schematic diagram of a partial cross-section of a pile-side grouting device for preventing particle blockage.

[0029] Figure 11 A partial three-dimensional structural schematic diagram of a pile-side grouting device for preventing particle blockage;

[0030] Figure 12 This is a schematic diagram of a partial cross-section of a grouting device for preventing particle blockage on the pile side.

[0031] The diagram shows the following components: 1. Spraying assembly; 11. First spray pipe; 12. Second spray pipe; 13. Sealing pipe; 131. Extension block; 14. Linkage pipe; 15. First nozzle; 16. Second nozzle; 17. Fixing rod; 18. Retaining ring; 19. Side slurry outlet; 31. Slurry pump; 32. Main slurry outlet pipe; 40. Pressurized detachment assembly; 41. Limiting guide rod; 42. First limiting groove seat; 43. Second limiting groove seat; 44. Sleeve; 45. Elasticity-increasing wave spring; 451. First peak section; 452. Second peak section; 453. Third peak section; 46. Side fixing sleeve; 47. Insert rod; 48. Spring; 49. Adjusting sleeve. Detailed Implementation

[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0033] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0034] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0035] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0036] Example 1

[0037] like Figure 1-12As shown, a pile-side grouting device for preventing particle blockage is described in this embodiment. To address the issue that while shaking or loosening the grout nozzle can prevent blockage to some extent, nozzle blockage remains a major industry problem, and there is no solution to compensate for nozzle blockage by using a second grout nozzle with a larger outlet hole, the device comprises a main grout pipe 32, a grout pump 31 mounted on the main grout pipe 32, and multiple spraying components 1 fixedly mounted on one side of the main grout pipe 32. The grout pump 31, main grout pipe 32, spraying components 1, and pressurized detachment components 40 work together to prevent particle blockage. 1. It can increase the pressure of the slurry in the spraying assembly 1 and the main slurry outlet pipe 32 to facilitate spraying. The spraying assembly 1 includes a second spraying pipe 12, a linkage pipe 14 slidably sleeved on the second spraying pipe 12, a first spraying pipe 11 slidably sleeved on the linkage pipe 14, and a sealing pipe 13 sleeved on the first spraying pipe 11. The sealing pipe 13 is fixedly sleeved on the second spraying pipe 12. A dual slurry outlet spraying scheme of the first spraying pipe 11 and the second spraying pipe 12 is adopted. Side slurry outlet holes 19 are opened on both sides of the second spraying pipe 12. The first spraying pipe 11 slides or falls off on the linkage pipe 14 and the second spraying pipe 12 through the pressure boosting and falling-off assembly 40. The pressurized detachment component 40 automatically closes the linkage pipe 14 and the side grout outlet 19 when the first grouting pipe 11 is blocked, and starts the second nozzle 16 for spraying. Even if the nozzle of the first nozzle 15 is blocked, the second grouting pipe 12 and the second nozzle 16 can continue to spray grout, achieving the effect that a second spraying can still be performed even after the first grouting pipe 11 and the first nozzle 15 are blocked. The pressurized detachment component 40 includes a limiting guide rod 41 fixedly installed at the top and bottom of the second grouting pipe 12, a first limiting groove seat 42 integrally formed at the top and bottom of the linkage pipe 14, and a second limiting groove seat 43 fixedly installed at the top and bottom of the inner ring of the first grouting pipe 11. The first limiting groove seat 42 is movably sleeved on the limiting guide rod 41, and the second limiting groove seat 43 is movably sleeved on the first limiting groove seat 42. The pressurized detachment assembly 40 also includes side fixing sleeves 46 fixedly disposed on both sides of the second shotcrete pipe 12, insert rods 47 fixedly disposed on both sides of the end of the linkage pipe 14, and springs 48 movably sleeved on the insert rods 47. The insert rods 47 movably pass through the side fixing sleeves 46, and the springs 48 are located between the side fixing sleeves 46 and the linkage pipe 14. The pressurized detachment assembly 40 also includes elastically increasing wave springs 45 fixedly disposed on both sides of the end of the first shotcrete pipe 11, and retaining sleeves 44 fixedly disposed on both sides of the end of the linkage pipe 14. The elastically increasing wave springs 45 movably pass through the retaining sleeves 44 and are secured to the retaining sleeves 44. The pressurized detachment assembly 40 also includes an adjusting slide sleeve 49 movably sleeved on the insert rods 47. The adjusting slide sleeve 49 and the insert rods 47 are fixedly connected by bolts, and the insert rods 47 have multiple threaded holes.Slurry flows into the first spraying pipe 11 from the side outlet 19 and the second nozzle 16. When the first spraying pipe 11 becomes blocked, the pressure inside increases, causing the first spraying pipe 11 to disengage the elastically increasing wave spring 45 from the clamp 44. Without the pressure of the slurry in the first spraying pipe 11, the spring 48 drives the insert rod 47 and the linkage pipe 14 to press against the retaining ring 18. Through the cooperation of the side fixing sleeve 46, the insert rod 47, the spring 48, and the adjusting sleeve 49, the side outlet 19 is closed. The pressure in the second spraying pipe 12 increases, facilitating the activation of the second nozzle 16 on the second spraying pipe 12 to spray the slurry. The intelligent control of the slurry pump 31 uses a pressure sensor embedded in the first spraying pipe 11, such as an MBS1900 pressure sensor, to monitor the pressure in real time and feed it back to the pump controller to adjust the flow rate.

[0038] Example 2

[0039] Based on the same concept as in Embodiment 1 above, and referring to... Figure 1-9 In this embodiment, to address the issue of the second grouting pipe 12 and the second nozzle 16 being less prone to clogging after the first grouting pipe 11 and the first nozzle 15 are blocked, the anti-particle clogging pile side grouting device further includes a first nozzle 15 at the end of the first grouting pipe 11, with multiple nozzles on the first nozzle 15. Multiple fixing rods 17 are fixedly installed at the end of the second grouting pipe 12, and a second nozzle 16 is fixedly installed at the end of each fixing rod 17, with multiple nozzles on the second nozzle 16. The through-hole of the nozzle on the second nozzle 16 is larger than that of the nozzle on the first nozzle 15, which facilitates clogging prevention. The through-hole of the nozzle on the second nozzle 16 is smaller than that of the nozzle on the first nozzle 15, resulting in better spraying effect. The inner ring of the sealing pipe 13 has a rubber layer, and a retaining ring 18 is fixedly sleeved on the second grouting pipe 12. The top and bottom of the sealing pipe 13 have extension blocks 131, which are fixedly connected to the second spray pipe 12 by bolts. Through the pressurization and detachment component 40, when the first spray pipe 11 is blocked, it automatically closes the linkage pipe 14 and the side grout outlet 19, and starts the second nozzle 16 to spray. Even if the nozzle of the first nozzle 15 is blocked, the second spray pipe 12 and the second nozzle 16 can continue to spray grout, thus achieving the effect that a second spray can still be carried out after the first spray pipe 11 and the first nozzle 15 are blocked.

[0040] The sealing pipe 13 can be easily fixed to the second grouting pipe 12 by means of the extension block 131 and bolts. Other methods can also be used to seal and fix the second grouting pipe 12 and the sealing pipe 13. The force of the grout pump 31 to draw grout can be adjusted. A pressure sensor can be installed in the first grouting pipe 11. After the first grouting pipe 11 is found to be detached, the force of the grout pump 31 to draw grout can be increased to facilitate the second nozzle 16 to spray grout. Alternatively, after the first nozzle 15 is found to be blocked, the force of the grout pump 31 to draw grout can be increased to make the first grouting pipe 11 detach more quickly and facilitate the second nozzle 16 to spray grout. The limiting guide rod 41 allows the linkage pipe 14 and the first limiting groove seat 42 to slide on the second shotcrete pipe 12 and prevent them from falling off. The second limiting groove seat 43 allows the first shotcrete pipe 11 to slide on the linkage pipe 14 and the first limiting groove seat 42, but it can fall off. The first shotcrete pipe 11 is inserted into the sealing pipe 13 to achieve a sealing effect. When the slurry enters the first shotcrete pipe 11 from the second nozzle 16, the pressure in the first shotcrete pipe 11 increases, thereby pressing the spring 48 to drive the elastic increasing wave spring 45, the clamp 44 and the linkage pipe 14 to move, opening the side slurry outlet 19. The slurry re-enters the first shotcrete pipe 11 from the side slurry outlet 19, and the slurry in the first shotcrete pipe 11 begins to be sprayed through the first nozzle 15. The clamp 44 can be designed with an adjustable hole size to adjust the clamping force on the elastic increasing wave spring 45. The elasticity-increasing corrugated spring 45 increases from one end of the first shotcrete pipe 11. The elasticity-increasing corrugated spring 45 is divided into three segments: the first peak segment 451, the second peak segment 452, and the third peak segment 453. The third peak segment 453 has the greatest elasticity and the largest size. The second peak segment 452 has the second greatest elasticity and the smallest size. The first peak segment 451 has the smallest elasticity and the smallest size. When the third peak segment 453 of the elasticity-increasing corrugated spring 45 slides out of the sleeve 44, the first shotcrete pipe 11 falls off. Whether the first shotcrete pipe 11 falls off or not depends mainly on whether the third peak segment 453 slides out of the sleeve 44. When the third peak segment 453 does not slide out of the sleeve 44, the sealing pipe 13 is always fitted on the first shotcrete pipe 11 to maintain a sealed state.

[0041] The dual design of the first grouting pipe 11 and the second grouting pipe 12: The first grouting pipe 11 and the first nozzle 15 are used for conventional grouting, enabling high-pressure fine spraying, suitable for high-viscosity grouts; the second grouting pipe 12 and the second nozzle 16 have larger nozzle orifice diameters, serving as backup channels to prevent clogging. The two are slidably connected by a linkage pipe 14, forming a pressure-responsive switching mechanism.

[0042] The rubber layer of the inner ring of the sealing pipe 13 is tightly fitted to the outer wall of the first spray pipe 11 to prevent grout leakage. The extension block 131 is fixed by bolts to ensure sealing and facilitate disassembly and maintenance.

[0043] If the through hole of the nozzle of the first nozzle 15 is the same size as the through hole of the nozzle of the second nozzle 16, the slurry feeding effect of the first nozzle 15 is relatively weak. After the first nozzle 15 falls off, the spraying effect of the second nozzle 16 is better, but it is also prone to clogging.

[0044] If the through hole of the nozzle of the first nozzle 15 is smaller than the through hole of the nozzle of the second nozzle 16, the first nozzle 15 will have a better effect on slurry intake. After the first nozzle 15 falls off, the second nozzle 16 will have a poor spraying effect, but it will be less prone to clogging.

[0045] Comparison with traditional single-nozzle design

[0046] Existing technologies, such as patent CN214061297U, only prevent clogging by increasing the size of the nozzle, but cannot dynamically switch between nozzles; patent CN202220764589 uses stirring to prevent clogging, but requires additional power. This solution utilizes the slurry's own pressure to drive the switching.

[0047] The wave spring adopts a three-stage gradient elastic design, with the first peak segment 451 < the second peak segment 452 < the third peak segment 453, forming a non-linear resistance increasing mechanism within the ferrule 44. When the slurry pressure acts on the first spray pipe 11, each peak segment must overcome the increasing elastic resistance to ensure that the tripping action is triggered only when completely blocked, avoiding false triggering. The extension block 131 adopts a wedge-shaped locking structure, which causes the sealing pipe 13 to undergo radial contraction deformation through bolt pre-tightening force, enhancing the interference fit with the second spray pipe 12. This structure improves the torsional strength of the connection, or the sealing pipe 13 and the second spray pipe 12 can be fixedly connected to achieve a sealing effect. A spiral guide groove is set on the inner wall of the first spray pipe 11, which is a new component located 50mm from the nozzle end. When the slurry flow velocity is greater than 2m / s, it generates a vortex effect, accelerating the suspension of particles and reducing the probability of deposition. This design improves the throughput of particles smaller than 0.5mm. The first nozzle 15 uses a fan-shaped nozzle array with a diameter of 1.5mm and a spread angle of 120°, while the second nozzle 16 uses a 3mm straight-hole nozzle. The elastic-increasing wave spring 45 has a diamond-like carbon coating, reducing the coefficient of friction and ensuring smooth sliding even in slurry. It is formed into an integral wave structure through laser micro-welding. This design allows the stress wave of the elastic-increasing wave spring 45 to be transmitted along the curved surface to the root under axial pressure, avoiding stress concentration-induced fracture. Compared to traditional disc-shaped springs, it improves elastic fatigue life. The first nozzle 15 has an embedded silicon carbide-reinforced nickel-based alloy bushing, with a 0.5mm thick wear-resistant layer formed using HVAF supersonic flame spraying technology, achieving a Vickers hardness of 1500HV. The second nozzle 16 adopts a dual-phase structure design, with a high-chromium cast iron substrate and a 1.2mm thick WC-10Co coating laser-laminated surface, providing improved wear resistance compared to traditional cemented carbide. The surface of the limiting guide rod 47 is treated with a micro-pit texture and filled with MoS2 solid lubricant, which reduces the coefficient of friction and extends the wear life. The rod body is pre-embedded with a PTFE bushing with a wall thickness of 1mm, which can maintain lubrication performance at low temperatures. The end of the rod is designed with a tapered guide head with a tapered angle of 30°, which forms a line contact guide with the first limiting groove seat 42 to avoid jamming.

[0048] The system employs a parallel dual-outlet grouting structure with a first grouting pipe 11 and a second grouting pipe 12. Pressure-responsive switching is achieved through a pressure-boosting and detachment component 40. When the pressure in the first grouting pipe 11 suddenly increases due to particle blockage, the system triggers the progressive slippage of the elastically increasing wave spring 45 via mechanical transmission, simultaneously closing the side grout outlet 19 and releasing the injection channel of the second grouting pipe 12. This design overcomes the limitation of traditional single-nozzle grouting devices that "stop immediately upon blockage," improving the continuity of grouting. The sliding fit between the sealing pipe 13 and the linkage pipe 14 forms a sealed cavity. When the first grouting pipe 11 is blocked, the grout pressure drives the linkage pipe 14 to shift in the opposite direction through the side grout outlet 19, compressing and storing energy in the spring 48. During this process, the guiding fit between the insertion rod 47 and the side fixing sleeve 46 ensures minimal displacement accuracy error, enabling rapid closure of the side grout outlet 19. Simultaneously, the pressure inside the second grouting pipe 12 increases instantaneously, ensuring that the injection kinetic energy does not diminish. The first nozzle 15 employs a fan-shaped nozzle array, while the second nozzle 16 is equipped with a straight-hole nozzle. The former forms a jet core area through fan-shaped spraying, suitable for the fine penetration of high-viscosity slurries, such as cement-water glass dual-liquid slurry. The latter's large-diameter design, combined with a 30° cone-angle guiding structure, expands the slurry diffusion angle to 150°, ensuring spraying efficiency while reducing nozzle clogging rate. The extension block 131 is made of 20CrMnTi alloy steel, carburized and quenched, resulting in high surface hardness. The interference fit tolerance with the sealing pipe 13 is controlled at IT6 level. The bolt preload is optimized to 250 N·m through finite element analysis, increasing the shear strength at the connection to 180 MPa, meeting the durability requirements of multiple grouting cycles. This device, through the deep integration of structural innovation, material optimization, and intelligent control, constructs a full-condition adaptive grouting system, achieving significant breakthroughs in anti-clogging performance, spraying efficiency, and economy, providing an innovative solution for complex geological foundation engineering. Its technical specifications comprehensively exceed current standards, demonstrating significant socio-economic benefits and promotional value. This device employs a parallel dual-outlet grouting structure with a first grouting pipe 11 and a second grouting pipe 12, achieving pressure-responsive switching via a pressure-boosting and detachment component 40. When the pressure in the first grouting pipe 11 suddenly increases due to particle blockage, the system triggers the progressive slippage of the elastically increasing wave spring 45 through mechanical transmission, simultaneously closing the side outlet hole 19 and releasing the injection channel of the second grouting pipe 12. This design overcomes the limitation of traditional single-nozzle grouting devices that "stop immediately upon blockage," significantly improving the continuity of grouting.

[0049] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A grouting device for preventing particle blockage on the pile side, comprising a main grout outlet pipe (32), a grout pump (31) installed on the main grout outlet pipe (32), and a plurality of spraying components (1) fixedly installed on one side of the main grout outlet pipe (32), characterized in that, The spraying assembly (1) includes a second spray pipe (12), a linkage pipe (14) slidably sleeved on the second spray pipe (12), a first spray pipe (11) slidably sleeved on the linkage pipe (14), and a sealing pipe (13) sleeved on the first spray pipe (11). The sealing pipe (13) is fixedly sleeved on the second spray pipe (12). The second spray pipe (12) has side outlet holes (19) on both sides. The first spray pipe (11) slides or falls off on the linkage pipe (14) and the second spray pipe (12) through a pressurized detachment assembly (40).

2. The pile-side grouting device for preventing particle blockage according to claim 1, characterized in that: The pressurized detachment assembly (40) includes a limiting guide rod (41) fixedly disposed at the top and bottom of the second spray pipe (12), a first limiting groove seat (42) integrally formed at the top and bottom of the linkage pipe (14), and a second limiting groove seat (43) fixedly disposed at the top and bottom of the inner ring of the first spray pipe (11). The first limiting groove seat (42) is movably sleeved on the limiting guide rod (41), and the second limiting groove seat (43) is movably sleeved on the first limiting groove seat (42).

3. The pile-side grouting device for preventing particle blockage according to claim 2, characterized in that: The pressurized detachment assembly (40) also includes side fixing sleeves (46) fixedly installed on both sides of the second spray pipe (12), insert rods (47) fixedly installed on both sides of the end of the linkage pipe (14), and springs (48) movably sleeved on the insert rods (47). The insert rods (47) movably pass through the side fixing sleeves (46), and the springs (48) are located between the side fixing sleeves (46) and the linkage pipe (14).

4. The grouting device for preventing particle blockage on the pile side according to claim 3, characterized in that: The pressurized detachment assembly (40) also includes elastic incremental wave springs (45) fixedly disposed on both sides of the end of the first spray pipe (11) and sleeves (44) fixedly disposed on both sides of the linkage pipe (14). The elastic incremental wave springs (45) move through the sleeves (44) and are locked on the sleeves (44).

5. The pile-side grouting device for preventing particle blockage according to claim 4, characterized in that: The pressurized detachment assembly (40) also includes an adjusting sleeve (49) movably sleeved on the insert rod (47). The adjusting sleeve (49) and the insert rod (47) are fixedly connected by bolts. The insert rod (47) has multiple threaded holes.

6. The pile-side grouting device for preventing particle blockage according to claim 4, characterized in that: The first spray pipe (11) has a first nozzle (15) at its end, and the first nozzle (15) has a plurality of nozzles.

7. The pile-side grouting device for preventing particle blockage according to claim 3, characterized in that: The end of the second spray pipe (12) is fixedly provided with a plurality of fixing rods (17), and the end of the plurality of fixing rods (17) is fixedly provided with a second nozzle (16), which has a plurality of nozzles.

8. The pile-side grouting device for preventing particle blockage according to claim 1, characterized in that: The inner ring of the sealing pipe (13) has a rubber layer, and a retaining ring (18) is fixedly sleeved on the second spray pipe (12).

9. The pile-side grouting device for preventing particle blockage according to claim 8, characterized in that: The top and bottom of the end of the sealing pipe (13) have extension blocks (131), which are fixedly connected to the second spray pipe (12) by bolts.

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