A silo construction stable type grouting pipe and a grouting method

Abstract

This invention relates to the field of silo construction technology, specifically to a silo construction stabilization grouting pipe and grouting method. The pipe includes a main grouting pipe, a tapered pipe, and a connecting pipe, all spliced ​​together. The main grouting pipe has evenly distributed grouting holes on its side. The connecting pipe is connected to a mounting plate using bolts. The mounting plate is connected to a support platform via an elastic support pad. A vibration motor for driving the connecting pipe vibration is fixedly installed on the upper surface of the support platform. A limiting sleeve is fixedly installed on the side of the tapered pipe. An expansion rod for increasing the contact area is installed inside the limiting sleeve, and a piston mechanism for driving the expansion rod extension and retraction is installed inside the tapered pipe. During grouting, the vibration motor on the upper surface of the support platform drives the support platform to vibrate. The vibration is transmitted to the mounting plate through the elastic support pad, thereby causing the entire grouting pipe to vibrate, achieving the purpose of compaction. Air bubbles are expelled during the grouting process, improving grouting quality.

Description

Technical Field

[0001] This invention relates to the field of silo construction technology, specifically to a stable grouting pipe and grouting method for silo construction. Background Technology

[0002] A silo is a vertical, enclosed, high-strength storage container specifically designed for storing large quantities of granular or powdery bulk materials. Due to the significant weight of the materials stored in the silo, a pile foundation structure is required during its construction. Grouting is performed using grouting pipes during pile foundation construction to improve the overall strength of the pile foundation.

[0003] As in the prior art, Chinese Patent Application No. 202321858186.5 discloses a grouting pipe, including: a grouting pipe assembly connected to an external grouting device; and a grouting conduit assembly sleeved on the outer periphery of the grouting pipe assembly; wherein, the grouting device can inject cement grout into the grouting pipe assembly, the grouting pipe assembly can be inserted into the grouting hole and grout the grouting hole, and the overall length d of the grouting pipe assembly is adjustable to be suitable for grouting holes of different depths. Since the overall length d of the grouting pipe assembly is adjustable, the overall length d of the grouting pipe assembly can be adjusted to a suitable length according to the actual depth of the grouting hole.

[0004] For example, in the prior art, Chinese patent application number 201620238606.3 discloses a grouting pipe, which includes a cylindrical structure formed by modified reactive powder concrete and a rigid keel formed in the cylindrical structure. The cylindrical structure is prepared by using modified reactive powder concrete material, so that the grouting pipe will not crack or leak.

[0005] For example, in the prior art, Chinese Patent Application No. 201911100504.X discloses a grouting pipe construction device and a grouting pipe construction method. The grouting pipe construction device includes: a grouting pipe fixing structure and a pile tip structure; the grouting pipe fixing structure is used to fix the grouting pipe; the pile tip structure includes an upper pile tip structure connected to the grouting pipe and a lower pile tip structure connected to the upper pile tip structure. The upper pile tip structure is provided with a grout outlet pipe that communicates with the grouting pipe. The grout outlet pipe's grout outlet direction is perpendicular to the surface of the grouting pipe. The grouting work is completed through the grout outlet pipe that communicates with the grouting pipe. Furthermore, since the grout outlet pipe's grout outlet direction is perpendicular to the surface of the grouting pipe.

[0006] Based on the above information, it can be seen that in existing technologies, grouting pipes generally inject cement grout directly into the pile foundation hole. In actual use, a certain amount of air will be mixed in during the mixing and transportation of the cement grout, forming air bubbles after grouting, which affects the overall grouting quality. Summary of the Invention

[0007] The purpose of this invention is to provide a stable grouting pipe and grouting method for silo construction, so as to solve the problem of air bubbles affecting grouting quality mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A silo construction stabilization grouting pipe includes a grouting main pipe, a tapered pipe, and a connecting pipe that are spliced ​​together. The grouting main pipe has evenly distributed grouting holes on its side. The connecting pipe is connected to a mounting plate by bolts. The mounting plate is connected to a support platform via an elastic support pad. A vibration motor for driving the connecting pipe to vibrate is fixedly installed on the upper surface of the support platform. The vibration motor on the upper surface of the support platform drives the support platform to vibrate, and the vibration is transmitted to the mounting plate through the elastic support pad, thereby causing the entire grouting pipe to vibrate. A limiting sleeve is fixedly installed on the side of the tapered pipe. An expansion rod for increasing the contact area is provided inside the limiting sleeve, and a piston mechanism for driving the expansion rod to extend and retract is provided inside the tapered pipe. A water injection pipe is slidably installed through the tapered pipe and rotatably connected to a connecting block. An installation pipe communicating with the connecting block is fixedly installed above the connecting block. A flushing pipe is engaged with the installation pipe. Water is injected into the connecting block through the water injection pipe. Since the connecting block has a hollow structure and is connected to the installation pipe, the injected water is sprayed out from the flushing pipe through the installation pipe.

[0010] Preferably, the piston mechanism includes a piston block fixedly installed at the rear end of the expansion rod, the piston block sliding against the inner wall of the limiting sleeve, a piston plate sliding against the inner wall of the upper end of the tapered tube, a return spring fixedly installed between the lower surface of the piston plate and the upper surface of the limiting sleeve, the pressure of the cement slurry pushes the piston plate inside the tapered tube to move downward, thereby using the piston plate to squeeze the air inside the tapered tube, and the squeezed air pushes the piston block to move.

[0011] Preferably, the expansion rod is fixedly installed with fins arranged at equal intervals on its side. The expansion rod and its external fins increase the contact area with the cement slurry, thereby improving the vibration transmission effect during vibration.

[0012] Preferably, the connecting block is rotatably mounted on the upper surface of the piston plate, and a power nozzle is fixedly mounted on the side of the connecting block. The inside of the connecting block is set as a hollow structure, and the water injected by the water injection pipe is sprayed out from the power nozzle through the connecting block. The power nozzle is set as an inclined structure, and the water injected into the connecting block is sprayed out from the power nozzle. Due to the inclined distribution of the power nozzle, the connecting block is pushed to rotate under the action of reaction force.

[0013] Preferably, an elastic mounting rod is fixedly installed on the upper surface of the connecting block, and a first extrusion ball is fixedly installed at the top of the mounting rod. The first extrusion ball and the second extrusion ball extrude against each other. The second extrusion ball is fixedly installed on the inner wall of the bottom end of the grouting main pipe, and the second extrusion balls are evenly distributed in a circle. The connecting block drives the mounting rod to rotate synchronously, and the mounting rod drives the first extrusion ball at its top to move. Vibration can be generated by the intermittent extrusion of the first extrusion ball and the second extrusion ball.

[0014] Preferably, the piston block has a hollow interior and a through hole communicating with the interior on its side.

[0015] Preferably, the piston block is connected to the water injection pipe via a connecting pipe, and the bottom of the water injection pipe is connected to the outside of the tapered pipe. Part of the water in the water injection pipe is sprayed out from the through hole on the side of the piston block through the connecting pipe, so as to achieve the purpose of flushing the inside of the limiting sleeve.

[0016] A grouting method for a silo construction stabilization grouting pipe includes the following steps:

[0017] S1. The installation plate is driven to vibrate by a vibrating motor. Since the installation plate and the support platform are connected by an elastic support pad, a good vibration effect can be maintained. The vibration is transmitted to the connecting pipe by the installation plate, which ultimately causes the grouting main pipe to vibrate as a whole, so as to achieve the purpose of vibrating the cement slurry in the pile hole.

[0018] S2. During the grouting process, the pressure of the cement slurry in the grouting main pipe pushes the piston plate in the tapered tube to move downward. At this time, the piston plate squeezes the air inside the tapered tube. The squeezed air pushes the piston block to move in the limiting sleeve, thereby using the piston block to drive the expansion rod to extend outward relative to the limiting sleeve.

[0019] S3. Water is injected into the water injection pipe through the water injection pipe. The water then enters the hollow connecting block through the water injection pipe. The water is sprayed out from the hole on the side of the flushing pipe through the installation pipe connected to the connecting block, so as to achieve the purpose of flushing the inside of the grouting main pipe. During the flushing process, some of the water that enters the connecting block is sprayed out from the power nozzle on the side. Since the power nozzle has an inclined structure, it drives the connecting block to rotate under the push of the reaction force. The connecting block drives the flushing pipe to rotate, thereby improving the flushing effect.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The silo construction-stabilized grouting pipe adopts a novel structural design, the details of which are as follows:

[0022] 1. The entire device is installed on the support platform. During the grouting process, the vibration motor on the upper surface of the support platform drives the support platform to vibrate. The vibration is transmitted to the mounting plate through the elastic support pad, thereby driving the grouting pipe to vibrate as a whole through the mounting plate, achieving the purpose of vibration. During the grouting process, air bubbles in the cement slurry in the grouting pipe are discharged, improving the grouting quality.

[0023] Furthermore, during the grouting process, the pressure of the cement grout pushes the piston plate inside the conical tube downwards, thereby squeezing the air inside the conical tube. The squeezed air pushes the piston block to move, causing the piston block to drive the expansion rod to extend outwards. The expansion rod and its external fin structure increase the contact area with the cement grout, thereby improving the vibration transmission effect during vibration. This allows for further vibration of the cement grout injected into the pile hole, achieving a better vibration effect.

[0024] 2. After use, connect the water pipe to the water injection pipe exposed at the bottom of the conical pipe, and inject water into the connecting block through the water injection pipe. Since the connecting block is hollow and connected to the installation pipe, the injected water is sprayed out from the flushing pipe through the installation pipe to achieve the purpose of flushing the inside of the grouting main pipe.

[0025] Furthermore, a power nozzle is installed on the side of the connecting block. Water injected into the connecting block is sprayed out from the power nozzle. Due to the inclined distribution of the power nozzle, the connecting block is pushed to rotate under the action of reaction force. The connecting block drives the mounting rod to rotate synchronously. The mounting rod drives the first extrusion ball at its top to move. The first extrusion ball and the second extrusion ball can be used to intermittently extrude and generate vibration. The vibration and flushing are combined to improve the flushing effect inside the grouting main pipe.

[0026] Furthermore, some of the water in the injection pipe is sprayed out through the through hole on the side of the piston block via the connecting pipe, thereby achieving the purpose of flushing the inside of the limiting sleeve. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the support platform structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the grouting main pipe structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the tapered tube structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the internal structure of the tapered tube of the present invention;

[0032] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle;

[0033] Figure 7 This is a schematic diagram of the bottom structure of the tapered tube of the present invention;

[0034] Figure 8 This is a schematic diagram of the connection structure between the tapered tube and the main grouting pipe of the present invention;

[0035] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B;

[0036] Figure 10 This is a schematic diagram of the connection between the water injection pipe and the piston block of the present invention.

[0037] In the diagram: 1. Grouting main pipe; 101. Grouting hole; 2. Tapered pipe; 3. Connecting pipe; 4. Support platform; 5. Mounting plate; 6. Support pad; 7. Vibration motor; 8. Limiting sleeve; 9. Expansion rod; 10. Piston block; 11. Piston plate; 12. Return spring; 13. Water injection pipe; 14. Connecting block; 15. Mounting pipe; 16. Mounting rod; 17. First extrusion ball; 18. Second extrusion ball; 19. Power nozzle; 20. Flushing pipe; 21. Connecting pipe; 22. Through hole. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figures 1-3 In order to achieve the purpose of vibration during grouting, this embodiment provides the following technical solution, which specifically discloses: a grouting main pipe 1, a tapered pipe 2 and a connecting pipe 3 that are spliced ​​together. The grouting main pipe 1 has evenly distributed grouting holes 101 on its side. The connecting pipe 3 is connected to the mounting plate 5 by bolts. The mounting plate 5 is connected to the support platform 4 by an elastic support pad 6. A vibration motor 7 for driving the connecting pipe 3 to vibrate is fixedly installed on the upper surface of the support platform 4.

[0040] When grouting is required, first move the support platform 4 to the pile hole position and fix it using its own braking system. Then, use bolts to assemble the connecting pipe 3 to the upper end of the grouting main pipe 1. The connecting pipe 3 and the grouting main pipe 1 can be directly connected, or a flexible hose can be used for connection. Next, use bolts to assemble the tapered pipe 2 to the lower end of the grouting main pipe 1. After assembly, fix the connecting pipe 3 inside the mounting plate 5 to connect the grouting device and the support platform 4. At this time, the grouting main pipe 1 is inserted into the pile hole. Then, connect the connecting pipe 3 to the cement slurry pumping device and use the pumping device to deliver the cement slurry. The grout is injected into the grouting main pipe 1. The cement grout in the grouting main pipe 1 is discharged into the pile foundation hole through the grouting hole 101 to achieve the purpose of grouting. During the grouting process, the vibration motor 7 on the upper surface of the support platform 4 is turned on. The vibration motor 7 drives the mounting plate 5 to vibrate. Since the mounting plate 5 and the support platform 4 are connected by the elastic support pad 6, a good vibration effect can be maintained. The vibration is transmitted to the connecting pipe 3 through the mounting plate 5, which ultimately makes the grouting main pipe 1 vibrate as a whole, so as to achieve the purpose of vibrating the cement grout in the pile foundation hole. The vibration is used to remove air bubbles and improve the grouting quality.

[0041] Example 2: Please refer to Figures 4-6 In order to improve the vibration effect, this embodiment provides the following technical solution, which specifically discloses: a limiting sleeve 8 is fixedly installed on the side of the tapered tube 2, an expansion rod 9 for expanding the contact area is provided inside the limiting sleeve 8, and a piston mechanism for driving the expansion rod 9 to extend and retract is provided inside the tapered tube 2. The piston mechanism includes a piston block 10 fixedly installed at the rear end of the expansion rod 9. The piston block 10 slides against the inner wall of the limiting sleeve 8. A piston plate 11 is installed at the upper end of the tapered tube 2 and slides against the inner wall. A return spring 12 is fixedly installed between the lower surface of the piston plate 11 and the upper surface of the limiting sleeve 8. The piston plate 11 moves downward to compress the air inside the tapered tube 2 and push the piston block 10 to move. A fin structure with equal spacing is fixedly installed on the side of the expansion rod 9.

[0042] During the grouting process, the pressure of the cement grout in the grouting main pipe 1 pushes the piston plate 11 in the tapered pipe 2 to move downward (when not grouting, the piston plate 11 is pushed to the upper end by the elastic action of the return spring 12). At this time, the piston plate 11 squeezes the air inside the tapered pipe 2. The squeezed air pushes the piston block 10 to move in the limiting sleeve 8. Thus, the piston block 10 drives the expansion rod 9 to extend outward relative to the limiting sleeve 8. The extended expansion rod 9, together with its external fin structure, increases the contact area with the cement grout in the pile hole, so that the vibration can be better transmitted during vibration and achieve a better vibration effect.

[0043] Example 3: Please refer to Figures 7-10To facilitate rinsing, this embodiment provides the following technical solution: a water injection pipe 13 is slidably installed inside the tapered tube 2. The water injection pipe 13 is rotatably connected to the connecting block 14, and an installation pipe 15 communicating with it is fixedly installed above the connecting block 14. The rinsing pipe 20 is engaged with the installation pipe 15. The connecting block 14 is rotatably installed on the upper surface of the piston plate 11, and a power nozzle 19 is fixedly installed on the side of the connecting block 14. The connecting block 14 has a hollow internal structure. Water injected by the water injection pipe 13 is sprayed out from the power nozzle 19 through the connecting block 14. 9 is set as an inclined structure. A flexible mounting rod 16 is fixedly installed on the upper surface of the connecting block 14. A first extrusion ball 17 is fixedly installed at the top of the mounting rod 16. The first extrusion ball 17 and the second extrusion ball 18 are mutually extruded. The second extrusion ball 18 is fixedly installed on the inner wall of the bottom end of the grouting main pipe 1, and the second extrusion ball 18 is circumferentially distributed at equal intervals. The piston block 10 is set as a hollow structure. A through hole 22 communicating with the inside is opened on the side of the piston block 10. The piston block 10 is connected to the water injection pipe 13 through the connecting pipe 21. The bottom of the water injection pipe 13 is connected to the outside of the tapered pipe 2.

[0044] After grouting is completed, remove the device and detach the grouting main pipe 1 from the connecting pipe 3. Insert the flushing pipe 20 into the grouting main pipe 1, with the bottom of the flushing pipe 20 inserted into the installation pipe 15 and secured by its own locking structure (the locking structure can be threaded or spring-loaded). Then connect the water pipe to the water injection pipe 13 exposed at the bottom of the tapered pipe 2 (a sealing ring is installed at the point where the water injection pipe 13 passes through the bottom of the tapered pipe 2 to achieve a seal, preventing cement grout from entering the tapered pipe 2 and preventing air leakage when the piston plate 11 squeezes air downwards). Inject water into the water injection pipe 13 using the water pipe, and then the water enters the hollow connecting block 14 through the water injection pipe 13. The water is then sprayed out from the hole on the side of the flushing pipe 20 through the installation pipe 15 connected to the connecting block 14, achieving the purpose of flushing the inside of the grouting main pipe 1. Water entering the connecting block 14 is sprayed out from the side power nozzle 19. Since the power nozzle 19 is an inclined structure, it drives the connecting block 14 to rotate under the push of the reaction force. The connecting block 14 drives the flushing pipe 20 to rotate, improving the flushing effect. The connecting block 14 also drives the mounting rod 16 on its upper surface to rotate. At this time, the first extrusion ball 17 at the top of the mounting rod 16 intermittently extrudes the second extrusion ball 18 on the inner wall of the bottom end of the grouting main pipe 1. When the mounting rod 16 rebounds, the first extrusion ball 17 strikes the inner wall of the grouting main pipe 1, causing the grouting main pipe 1 to vibrate. The vibration helps the attached cement slurry to detach, and together with the flushing, it achieves a better cleaning effect. Some water in the water injection pipe 13 enters the hollow piston block 10 through the connecting pipe 21, and then sprays out from the through hole 22 on the side of the piston block 10, achieving the purpose of flushing the inside of the limiting sleeve 8.

[0045] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silo construction stabilization grouting pipe, comprising a grouting main pipe (1), a tapered pipe (2), and a connecting pipe (3) spliced ​​together, characterized in that: The grouting main pipe (1) has evenly distributed grouting holes (101) on its side. The connecting pipe (3) is connected to the mounting plate (5) by bolts. The mounting plate (5) is connected to the support platform (4) through an elastic support pad (6). A vibration motor (7) for driving the connecting pipe (3) to vibrate is fixedly installed on the upper surface of the support platform (4). The tapered tube (2) is fixedly installed with a limiting sleeve (8) on its side. The limiting sleeve (8) is provided with an expansion rod (9) for increasing the contact area. The tapered tube (2) is also provided with a piston mechanism for driving the expansion rod (9) to extend and retract. A water injection pipe (13) is slidably installed inside the tapered tube (2). The water injection pipe (13) is rotatably connected to the connecting block (14), and an installation pipe (15) connected to it is fixedly installed above the connecting block (14). The flushing pipe (20) is engaged with the installation pipe (15).

2. The silo construction stabilization grouting pipe according to claim 1, characterized in that: The piston mechanism includes a piston block (10) fixedly installed at the rear end of the expansion rod (9), and the piston block (10) slides against the inner wall of the limiting sleeve (8).

3. The silo construction stabilization grouting pipe according to claim 2, characterized in that: The upper end of the tapered tube (2) is fitted with a piston plate (11) that slides against the inner wall. A return spring (12) is fixedly installed between the lower surface of the piston plate (11) and the upper surface of the limiting sleeve (8). The piston plate (11) moves downward to squeeze the air inside the tapered tube (2) and push the piston block (10) to move.

4. A silo construction stabilization grouting pipe according to claim 3, characterized in that: The expansion rod (9) has fins arranged at equal intervals fixedly installed on its side.

5. A silo construction stabilization grouting pipe according to claim 3, characterized in that: The connecting block (14) is rotatably mounted on the upper surface of the piston plate (11), and a power nozzle (19) is fixedly mounted on the side of the connecting block (14).

6. A silo construction stabilization grouting pipe according to claim 5, characterized in that: The connecting block (14) is hollow inside. Water injected by the water injection pipe (13) is sprayed out from the power nozzle (19) through the connecting block (14). The power nozzle (19) is set as an inclined structure.

7. A silo construction stabilization grouting pipe according to claim 6, characterized in that: The upper surface of the connecting block (14) is fixedly mounted with an elastic mounting rod (16), and the top end of the mounting rod (16) is fixedly mounted with a first compression ball (17).

8. A silo construction stabilization grouting pipe according to claim 7, characterized in that: The first extrusion ball (17) and the second extrusion ball (18) are extruded in a corresponding manner. The second extrusion ball (18) is fixedly installed on the inner wall of the bottom end of the grouting main pipe (1), and the second extrusion balls (18) are evenly distributed in a circle.

9. A silo construction stabilization grouting pipe according to claim 2, characterized in that: The piston block (10) is hollow inside, and a through hole (22) communicating with the inside is provided on the side of the piston block (10). The piston block (10) is connected to the water injection pipe (13) through the connecting pipe (21), and the bottom of the water injection pipe (13) is connected to the outside of the tapered pipe (2).

10. A grouting method for a silo construction stabilization grouting pipe, characterized in that: The method is applied to the grouting pipe as described in any one of claims 1-9, and the method includes the following steps: S1. The vibration motor (7) drives the mounting plate (5) to vibrate. Since the mounting plate (5) and the support platform (4) are connected by an elastic support pad (6), a good vibration effect can be maintained. The vibration is transmitted to the connecting pipe (3) by the mounting plate (5), which ultimately makes the grouting main pipe (1) vibrate as a whole, so as to achieve the purpose of vibrating the cement slurry in the pile hole. S2. During the grouting process, the pressure of the cement slurry in the grouting main pipe (1) pushes the piston plate (11) in the conical pipe (2) to move downward. At this time, the piston plate (11) squeezes the air inside the conical pipe (2), and the squeezed air pushes the piston block (10) to move in the limiting sleeve (8), thereby using the piston block (10) to drive the expansion rod (9) to extend outward relative to the limiting sleeve (8); S3. Water is injected into the water injection pipe (13) through the water injection pipe (13). Then the water enters the hollow connecting block (14) through the water injection pipe (13). The water is sprayed out from the hole on the side of the flushing pipe (20) through the installation pipe (15) connected to the connecting block (14), so as to achieve the purpose of flushing the inside of the grouting main pipe (1). During the flushing process, some of the water that enters the connecting block (14) is sprayed out from the power nozzle (19) on the side. Since the power nozzle (19) is an inclined structure, it drives the connecting block (14) to rotate under the push of the reaction force. The connecting block (14) drives the flushing pipe (20) to rotate to improve the flushing effect.

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