Grouting device and grouting method for grouting material in steel sleeve of building structure

Abstract

The invention relates to the technical field of building construction equipment, and particularly discloses a grouting device and a grouting method for grouting materials in a steel sleeve of a building structure, the grouting device comprises a mounting frame, and further comprises a grouting mechanism fixedly mounted at the top of the mounting frame; and the anti-blocking mechanism is fixedly mounted in the grouting mechanism. The mode that the slurry is promoted to be poured through extrusion of the pressure cover is different from an existing mode that pressurization is conducted through an air pump, the pouring quality problem caused by the fact that bubbles possibly enter the slurry under the high air pressure condition in the grouting process is greatly solved, and meanwhile water at the specified temperature can be introduced into the liquid storage cavity of the pressure tank through the water inlet pipe in the pouring process; water enters from the water inlet pipe, gradually fills the liquid storage cavity and is finally guided out from the water outlet pipe to complete circulation, so that the temperature in the pressure tank is always kept at a proper value during grouting in different seasons, the fluidity of slurry is ensured, and the stability of grouting quality is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of building construction equipment technology, specifically to a grouting device and grouting method for grouting material inside steel sleeves of building structures. Background Technology

[0002] In the field of building construction, grouting devices for steel sleeves are used to achieve precise injection of concrete grout to ensure the connection strength of building structures. The device provided by this invention, through the coordinated design of the grouting mechanism and the anti-clogging mechanism, utilizes a pressure hood to squeeze the grout to achieve air-free injection, and maintains the grout fluidity through a temperature circulation system in the storage chamber. Simultaneously, it uses structures such as impellers and stirring bars to prevent pipeline blockage. It is suitable for automated grouting operations on various types of building steel sleeves and is of great significance for improving grouting quality and construction efficiency.

[0003] Traditional steel sleeve grouting technology has significant shortcomings. Regarding grouting quality, traditional devices rely heavily on air pumps to pressurize and deliver the grout, which easily introduces air bubbles under high pressure, leading to voids or uneven strength in the grout layer and affecting structural safety. It also suffers from poor environmental adaptability, lacking a temperature control mechanism. The grout's fluidity is significantly affected by seasonal temperature fluctuations, easily solidifying at low temperatures and segregating at high temperatures, making it difficult to guarantee construction stability. Furthermore, its anti-clogging capability is weak; traditional devices lack dynamic cleaning mechanisms for connection holes and injection pipes, allowing clumps or solidified substances in the grout to easily cause pipe blockages, requiring frequent shutdowns for manual unblocking and reducing construction efficiency. In addition, traditional grouting methods have low automation; the grout mixing and delivery processes require manual intervention, and precise control of injection pressure is impossible, hindering the progress of industrialized construction and the standardization of grouting operations. Summary of the Invention

[0004] (a) Technical problems to be solved This invention provides a grouting device and grouting method for grouting material inside steel sleeves of building structures, which solves the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a grouting device for grouting material inside a steel sleeve of a building structure, comprising a mounting frame and further comprising: a grouting mechanism fixedly mounted on the top of the mounting frame; and an anti-blocking mechanism fixedly mounted inside the grouting mechanism; wherein the grouting mechanism comprises a chassis, the chassis being fixedly connected to the inner top surface of the mounting frame, a hopper being fixedly inserted into the lower edge of the chassis, a material injection pipe being fixedly connected through the bottom of the hopper, a pressure tank being fixedly inserted into the upper surface of the chassis, and a top cover being fastened to the top of the pressure tank.

[0006] According to one embodiment of the present invention, a connecting hole is provided through the upper surface of the chassis. The three connecting holes are arranged as a group, and six groups of connecting holes are arranged in a ring with a fixed spacing around the central axis of the chassis. The upper and lower sides of the connecting holes are respectively connected to the internal cavities of the pressure tank and the hopper.

[0007] According to one embodiment of the present invention, a motor is fixedly connected to the upper surface of the top cover, and a drive rod is rotatably connected to the output end of the motor. The bottom of the drive rod passes through the top cover and is disposed inside the pressure tank. The drive rod is configured as a threaded rod, and a pressure cover is threadedly connected to the top of the drive rod. The pressure cover is slidably inserted into the inner surface of the pressure tank.

[0008] According to one embodiment of the present invention, the pressure tank has a liquid storage chamber inside, an inlet pipe is fixedly connected to the bottom of the liquid storage chamber, and an outlet pipe is fixedly connected to the top of the side of the liquid storage chamber away from the inlet pipe.

[0009] According to one embodiment of the present invention, the anti-blocking mechanism includes a driven rod, which is rotatably connected to the upper edge surface of the chassis. The driven rod is provided with six rods at fixed intervals around the central axis of the chassis. The top of the driven rod slides through the upper edge surface of the pressure cover and is inserted into the inner surface of the top cover. The outer surface of the driven rod is provided with threads, and the driven rod is connected to the pressure cover by threads.

[0010] According to one embodiment of the present invention, a pulsator is fixedly connected to the bottom outer surface of the driven rod. The pulsator is disposed above the connecting hole. The bottom of the pulsator is attached to the upper surface of the chassis. A mounting ring is disposed above the pulsator. A mounting rod is fixedly connected through the upper surface of the mounting ring. The mounting rod is fixedly spaced at three intervals around the central axis of the mounting ring. The bottom of the mounting rod is fixedly connected to the upper surface of the chassis. A compression plate is rotatably connected to the outer surface of the mounting rod via a torsion spring.

[0011] According to one embodiment of the present invention, an inner groove is formed inside the edge of the chassis, the inner groove is connected to a connecting hole, a turntable is rotatably connected inside the inner groove, a misalignment hole is formed through the upper surface of the turntable, the misalignment hole is the same size as the connecting hole, the middle upper surface of the turntable is fixedly connected to the bottom of the driven rod, an installation groove is formed through the middle upper surface of the chassis, a connecting block is rotatably connected in the installation groove, the connecting block is a magnet, a spike is fixedly connected to the bottom of the drive rod, and the upper surface of the magnet is in contact with the bottom surface of the spike.

[0012] According to one embodiment of the present invention, a connecting rod is fixedly connected to the lower surface of the magnet block, and a stirring bar is fixedly connected to the outer surface of the connecting rod via a connecting rod. The stirring bar is arranged at six fixed intervals around the central axis of the connecting rod.

[0013] According to one embodiment of the present invention, the injection tube includes an outer tube, an inner tube is provided inside the outer tube, the outer tube is a metal braided tube, the inner tube is a rubber tube, an expansion cavity is provided between the outer tube and the inner tube, a rubber strip is provided in the expansion cavity, the two ends of the rubber strip are respectively fixedly connected to the inner surface of the outer tube and the outer surface of the rubber tube, and six rubber strips are fixedly spaced around the central axis of the outer tube and the inner tube.

[0014] A grouting method for a grouting device for grouting material inside a steel sleeve of a building structure includes the following steps: S1. Remove the top cover from the pressure tank, and the integrated drive shaft and pressure cover are removed at the same time; S2. After the top cover is removed, inject slurry into the pressure tank, and after the slurry injection is completed, put the top cover back on the top of the pressure tank. S3. After the top cover is fastened, start the motor. The motor will drive the drive shaft to rotate. After the drive shaft rotates, it will drive the pressure shroud to move down through the thread, pressurizing the slurry inside the pressure tank. S4. After being pressurized, the grout enters the hopper through the connection hole on the chassis, then enters the injection pipe through the hopper, and finally enters the steel sleeve to complete the grouting.

[0015] If grouting is required on the steel sleeve, the top cover can be removed entirely from the pressure tank. A motor is fixedly connected to the top cover, and the motor is connected to the drive shaft. The drive shaft is connected to the pressure cover via threads, so the pressure cover is removed along with the top cover. Grout is then introduced into the pressure tank, and after the grout injection is complete, the top cover is reattached. The motor is then started, which drives the drive shaft to rotate. As the drive shaft rotates, it causes the pressure cover to move downwards within the pressure tank via threads, thereby pressurizing the grout in the pressure tank. As the grout is pressurized, it begins to enter the hopper at the bottom through the connection hole on the chassis, and is then transported to the steel sleeve through the injection pipe at the bottom of the hopper to complete the grouting process.

[0016] (III) Beneficial Effects This invention provides a grouting device and method for grouting material inside steel sleeves of building structures. It has the following beneficial effects: (I) The grouting device and grouting method for the steel sleeve of this building structure, which uses the pressure of the pressure hood to squeeze the grout, is different from the existing method of pressurizing by an air pump. This greatly reduces the possibility of air bubbles entering the grout under high pressure during grouting, which may cause grouting quality problems. At the same time, during grouting, water at a specified temperature can be introduced into the storage chamber of the pressure tank through the water inlet pipe. The water enters from the water inlet pipe, gradually fills the storage chamber, and finally exits from the water outlet pipe to complete the circulation. This ensures that the temperature inside the pressure tank is always kept at a suitable value when grouting is carried out in different seasons, thereby ensuring the fluidity of the grout and greatly improving the stability of grouting quality.

[0017] (II) The grouting device and method for the grouting material inside the steel sleeve of this building structure: When the pressure hood moves down, it simultaneously drives the driven rod to rotate under the action of the thread, thereby causing the impeller at the bottom of the driven rod to rotate. The rotation of the impeller ensures good fluidity of the grout during pressurized conveying, while also ensuring the uniformity of the grout in the pressure tank during flow conveying, thus further improving the grouting quality. Simultaneously, the rotation of the impeller also allows for real-time agitation and cleaning of the connection holes, significantly reducing the possibility of blockage. Furthermore, the impeller intermittently contacts and squeezes the extrusion plate during rotation, thus squeezing and breaking up the clumps of grout accumulated at the connection holes. The dispersion not only reduces the probability of blockage at the connection hole, but also improves the quality of the grout, preventing the formation of clumps during pressurization that could affect the grouting quality. The rotation of the driven rod continuously drives the turntable inside the chassis, causing the misaligned holes on the chassis to intermittently align with the connection holes. This further pressurizes the connection holes when they are blocked by the turntable, and increases the grout pressure at the connection holes when the misaligned holes align with them. This intermittent increase in grout pressure during delivery and injection creates greater extrusion force at the connection holes, thereby improving the flowability of the connection holes during injection and preventing blockage.

[0018] (III) Grouting device and method for grouting material inside the steel sleeve of this building structure: After the top cover is fastened with the pressure tank, the drive rod moves simultaneously to the base plate, so that the spike moves to the base plate, thereby magnetically attracting the connecting block. When the motor drives the drive rod to rotate, it synchronously drives the connecting block to rotate on the base plate, thereby causing the transfer rod to rotate synchronously. In turn, the rotation of the transfer rod drives the stirring bar to rotate, so as to stir the slurry in the hopper when the slurry enters the hopper through the connecting hole, further improving the fluidity of the slurry and preventing the slurry from not flowing properly after passing through the connecting hole. The problem is that after the slurry passes through the hopper, it enters the injection pipe. If there are any lumps of slurry that are not completely broken up, the pressure inside the injection pipe will be further increased. At this time, the slurry flows in the inner tube, and the inner tube has a certain degree of expansion. That is, in conjunction with the turntable, the pressure inside the injection pipe is intermittently and significantly increased, thereby pushing the lumps of slurry that are not completely broken up forward and eventually entering the steel sleeve. This greatly reduces the possibility of the injection pipe being blocked, significantly improves the working stability of the device, and minimizes the possibility of blockage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the pressure vessel of the present invention; Figure 3 This is a schematic diagram of the drive rod and its connection structure of the present invention; Figure 4 This is a schematic diagram of the adapter rod and its connection structure of the present invention; Figure 5 This is a schematic diagram of the driven rod and its connection structure of the present invention; Figure 6 This is a schematic diagram of the mounting ring and its connection structure of the present invention; Figure 7 This is a schematic diagram of the turntable and its connection structure of the present invention; Figure 8 This is a schematic diagram of the injection tube of the present invention.

[0020] In the diagram: 1. Mounting frame; 2. Grouting mechanism; 21. Chassis; 22. Hopper; 23. Injection pipe; 24. Pressure tank; 25. Top cover; 26. Connecting hole; 27. Motor; 28. Drive rod; 29. ​​Pressure cover; 210. Liquid storage chamber; 211. Water inlet pipe; 212. Water outlet pipe; 3. Anti-clogging mechanism; 31. Driven rod; 32. Impeller; 33. Mounting ring; 34. Mounting rod; 35. Extrusion plate; 36. Inner groove; 37. Turntable; 38. Misalignment hole; 39. Mounting groove; 310. Connecting block; 311. Spike; 312. Adapter rod; 313. Stirring bar; 314. Outer pipe; 315. Inner pipe; 316. Expansion chamber; 317. Rubber strip. Detailed Implementation

[0021] 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.

[0022] First embodiment: as follows Figures 1 to 8 As shown, the present invention provides a technical solution: a grouting device for grouting material inside a steel sleeve of a building structure, including a mounting frame 1, and further comprising: Grouting mechanism 2 is fixedly installed on the top of mounting frame 1; Anti-blocking mechanism 3 is fixedly installed inside grouting mechanism 2; The grouting mechanism 2 includes a chassis 21, which is fixedly connected to the top inner surface of the mounting frame 1. A hopper 22 is fixedly inserted into the lower edge of the chassis 21. A material injection pipe 23 is fixedly connected through the bottom of the hopper 22. A pressure tank 24 is fixedly inserted into the upper surface of the chassis 21. A top cover 25 is fastened to the top of the pressure tank 24.

[0023] The upper surface of the chassis 21 is provided with a through hole 26. Three connecting holes 26 are set as a group. The connecting holes 26 are arranged in a ring around the central axis of the chassis 21 at a fixed interval. The upper and lower sides of the connecting holes 26 are respectively connected to the internal cavities of the pressure tank 24 and the hopper 22.

[0024] A motor 27 is fixedly connected to the upper surface of the top cover 25. A drive rod 28 is rotatably connected to the output end of the motor 27. The bottom of the drive rod 28 passes through the top cover 25 and is located inside the pressure tank 24. The drive rod 28 is a threaded rod. A pressure cover 29 is threadedly connected to the top of the drive rod 28. The pressure cover 29 slides up and down and is inserted into the inner surface of the pressure tank 24.

[0025] The pressure tank 24 has a liquid storage chamber 210 inside. The bottom of the liquid storage chamber 210 is fixedly connected to an inlet pipe 211, and the top of the side of the liquid storage chamber 210 away from the inlet pipe 211 is fixedly connected to an outlet pipe 212.

[0026] Second embodiment: as follows Figures 1 to 8As shown, the anti-blocking mechanism 3 includes a driven rod 31, which is rotatably connected to the upper edge of the chassis 21. Six driven rods 31 are fixedly spaced around the central axis of the chassis 21. The top of the driven rod 31 slides through the upper edge of the pressure cover 29 and is inserted into the inner surface of the top cover 25. The outer surface of the driven rod 31 is threaded, and the driven rod 31 is connected to the pressure cover 29 by the thread.

[0027] A pulsator 32 is fixedly connected to the bottom outer surface of the driven rod 31. The pulsator 32 is positioned above the connecting hole 26. The bottom of the pulsator 32 is attached to the upper surface of the chassis 21. A mounting ring 33 is positioned above the pulsator 32. A mounting rod 34 is fixedly connected through the upper surface of the mounting ring 33. The mounting rod 34 is arranged in three fixed intervals around the central axis of the mounting ring 33. The bottom of the mounting rod 34 is fixedly connected to the upper surface of the chassis 21. A compression plate 35 is rotatably connected to the outer surface of the mounting rod 34 via a torsion spring.

[0028] An inner groove 36 is formed inside the edge of the chassis 21, which communicates with the connecting hole 26. A turntable 37 is rotatably connected inside the inner groove 36. A misalignment hole 38 is formed through the upper surface of the turntable 37. The misalignment hole 38 is the same size as the connecting hole 26. The middle upper surface of the turntable 37 is fixedly connected to the bottom of the driven rod 31. An installation groove 39 is formed through the middle upper surface of the chassis 21. A connecting block 310 is rotatably connected inside the installation groove 39. The connecting block 310 is a magnet. A spike 311 is fixedly connected to the bottom of the drive rod 28. The upper surface of the magnet is in contact with the bottom surface of the spike 311.

[0029] A connecting rod 312 is fixedly connected to the lower surface of the magnet block. A stirring bar 313 is fixedly connected to the outer surface of the connecting rod 312 via a connecting rod. Six stirring bars 313 are arranged at fixed intervals around the central axis of the connecting rod 312.

[0030] The injection tube 23 includes an outer tube 314 and an inner tube 315 disposed inside the outer tube 314. The outer tube 314 is a metal braided tube, and the inner tube 315 is a rubber tube. An expansion cavity 316 is disposed between the outer tube 314 and the inner tube 315. A rubber strip 317 is disposed inside the expansion cavity 316. The two ends of the rubber strip 317 are fixedly connected to the inner surface of the outer tube 314 and the outer surface of the rubber tube, respectively. Six rubber strips 317 are fixedly spaced around the central axis of the outer tube 314 and the inner tube 315.

[0031] A grouting method for a grouting device for grouting material inside a steel sleeve of a building structure includes the following steps: S1. Remove the top cover 25 from the pressure tank 24, and simultaneously remove the integrated drive shaft and pressure cover 29; S2. After the top cover 25 is removed, slurry is injected into the pressure tank 24, and after the slurry injection is completed, the top cover 25 is put back on the top of the pressure tank 24. S3. After the top cover 25 is fastened, start the motor 27. The motor 27 starts and drives the drive shaft to rotate. After the drive shaft rotates, it will drive the pressure cover 29 to move down through the thread, pressurizing the slurry inside the pressure tank 24. S4. After being pressurized, the grout enters the hopper 22 through the connecting hole 26 on the chassis 21, and then enters the injection pipe 23 through the hopper 22, and finally enters the steel sleeve to complete the grouting.

[0032] During operation, if grouting of the steel sleeve is required, the top cover 25 can be removed entirely from the pressure tank 24. A motor 27 is fixedly connected to the top cover 25, and the motor 27 is connected to a drive shaft. The drive shaft is also connected to the pressure cover 29 via threads. Therefore, when removing the top cover 25, the pressure cover 29 is removed along with it. Grout is then introduced into the pressure tank 24. After the grout injection is complete, the top cover 25 is reattached. The motor 27 is then started, driving the drive shaft to rotate. As the drive shaft rotates, it causes the pressure cover 29 to move downwards within the pressure tank 24 via threads, thereby pressurizing the grout within the pressure tank 24. As the grout is pressurized, it begins to flow through the connection hole 26 on the base plate 21 into the hopper at the bottom. The grout is fed into the steel sleeve through the injection pipe 23 at the bottom of the hopper 22 to complete the grouting. The method of injecting grout by squeezing it through the pressure hood 29 differs from the existing method of pressurizing with an air pump. This significantly reduces the risk of air bubbles entering the grout under high pressure, which could lead to grouting quality problems. Simultaneously, during grouting, water at a specified temperature can be introduced into the liquid storage chamber 210 of the pressure tank 24 through the water inlet pipe 211. The water gradually fills the liquid storage chamber 210 and is finally discharged through the water outlet pipe 212, completing the circulation. This ensures that the temperature inside the pressure tank 24 remains at a suitable value regardless of the season, thus ensuring the fluidity of the grout and significantly improving the stability of the grouting quality. When the cover 29 moves downward, it simultaneously drives the driven rod 31 to rotate under the action of the thread, thereby causing the impeller 32 at the bottom of the driven rod 31 to rotate. The rotation of the impeller 32 ensures good fluidity of the slurry during pressurized conveying, while also ensuring the uniformity of the slurry within the pressure tank 24 during flow conveying, thus further improving the grouting quality. Simultaneously, the rotation of the impeller 32 also agitates and cleans the connection hole 26 in real time, significantly reducing the possibility of blockage at the connection hole 26. Furthermore, the impeller 32 intermittently contacts and squeezes the extrusion plate 35 during rotation, breaking up any clumps of slurry gathered at the connection hole 26, further reducing the likelihood of blockage at the connection hole 26. This reduces the probability of blockage and improves the quality of the grout, preventing the formation of lumps during pressurization that could affect grouting quality. The driven rod 31 rotates continuously, driving the turntable 37 inside the chassis 21 to rotate. This causes the misalignment hole 38 on the chassis 21 to intermittently align with the connecting hole 26. When the connecting hole 26 is blocked by the turntable 37, it is further pressurized. When the misalignment hole 38 aligns with the connecting hole 26, the grout pressure at the connecting hole 26 is further increased. This intermittent increase in pressure during grout delivery and injection creates greater extrusion force at the connecting hole 26, thereby improving the passage of the connecting hole 26 during injection and preventing blockage.After the top cover 25 is engaged with the pressure tank 24, the drive rod 28 moves simultaneously to the base 21, causing the spike 311 to move to the base 21. There, it magnetically attracts the connecting block 310. When the motor 27 drives the drive rod 28 to rotate, it simultaneously drives the connecting block 310 to rotate on the base 21, causing the adapter rod 312 to rotate synchronously. This rotation of the adapter rod 312 then drives the stirring bar 313 to rotate, thus agitating the slurry in the hopper 22 as it enters through the connecting hole 26. This further improves the slurry's fluidity and prevents it from becoming sluggish after passing through the connecting hole 26. The problem is that after the slurry passes through hopper 22 and enters the injection pipe 23, if any incompletely broken clumps of slurry enter the injection pipe 23, the pressure inside the injection pipe 23 will be further increased. At this time, the slurry flows within the inner pipe 315, which has a certain degree of expansion. This, in conjunction with the turntable 37, causes the pressure inside the injection pipe 23 to be intermittently and significantly increased, thereby pushing the incompletely broken clumps of slurry forward until they finally enter the steel sleeve. This significantly reduces the possibility of the injection pipe 23 becoming blocked, greatly improves the operational stability of the device, and minimizes the possibility of blockage.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] 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 grouting device for grouting material inside a steel sleeve of a building structure, comprising a mounting frame (1), characterized in that: Also includes: Grouting mechanism (2), which is fixedly installed on the top of mounting frame (1); Anti-blocking mechanism (3), which is fixedly installed inside the grouting mechanism (2); The grouting mechanism (2) includes a chassis (21), which is fixedly connected to the top inner surface of the mounting frame (1). A hopper (22) is fixedly inserted into the lower edge of the chassis (21), and a material injection pipe (23) is fixedly connected through the bottom of the hopper (22). A pressure tank (24) is fixedly inserted into the upper surface of the chassis (21), and a top cover (25) is fastened to the top of the pressure tank (24).

2. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 1, characterized in that: The upper surface of the chassis (21) is provided with a connecting hole (26). The three connecting holes (26) are set as a group. The connecting holes (26) are arranged in six groups in a ring with a fixed spacing around the central axis of the chassis (21). The upper and lower sides of the connecting holes (26) are respectively connected to the internal cavity of the pressure tank (24) and the hopper (22).

3. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 2, characterized in that: A motor (27) is fixedly connected to the upper surface of the top cover (25). A drive rod (28) is rotatably connected to the output end of the motor (27). The bottom of the drive rod (28) passes through the top cover (25) and is set inside the pressure tank (24). The drive rod (28) is set as a threaded rod. A pressure cover (29) is threadedly connected to the top of the drive rod (28). The pressure cover (29) slides up and down and is inserted into the inner surface of the pressure tank (24).

4. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 3, characterized in that: The pressure tank (24) has a liquid storage chamber (210) inside. A water inlet pipe (211) is fixedly connected to the bottom of the liquid storage chamber (210), and a water outlet pipe (212) is fixedly connected to the top of the side of the liquid storage chamber (210) away from the water inlet pipe (211).

5. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 4, characterized in that: The anti-blocking mechanism (3) includes a driven rod (31), which is rotatably connected to the upper edge of the chassis (21). The driven rod (31) is arranged in six fixed intervals around the central axis of the chassis (21). The top of the driven rod (31) slides through the upper edge of the pressure cover (29) and is inserted into the inner surface of the top cover (25). The outer surface of the driven rod (31) is provided with threads, and the driven rod (31) and the pressure cover (29) are connected by threads.

6. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 5, characterized in that: A pulsator (32) is fixedly connected to the bottom outer surface of the driven rod (31). The pulsator (32) is located above the connecting hole (26). The bottom of the pulsator (32) is attached to the upper surface of the chassis (21). A mounting ring (33) is provided above the pulsator (32). A mounting rod (34) is fixedly connected through the upper surface of the mounting ring (33). Three mounting rods (34) are fixedly spaced around the central axis of the mounting ring (33). The bottom of the mounting rod (34) is fixedly connected to the upper surface of the chassis (21). A compression plate (35) is rotatably connected to the outer surface of the mounting rod (34) through a torsion spring.

7. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 6, characterized in that: The chassis (21) has an inner groove (36) inside its edge. The inner groove (36) is connected to the connecting hole (26). A turntable (37) is rotatably connected inside the inner groove (36). A misalignment hole (38) is provided through the upper surface of the turntable (37). The misalignment hole (38) and the connecting hole (26) are of the same size. The upper surface of the middle part of the turntable (37) is fixedly connected to the bottom of the driven rod (31). An installation groove (39) is provided through the upper surface of the middle part of the chassis (21). A connecting block (310) is rotatably connected inside the installation groove (39). The connecting block (310) is a magnet. A spike (311) is fixedly connected to the bottom of the drive rod (28). The upper surface of the magnet is in contact with the bottom surface of the spike (311).

8. The grouting device for grouting material inside a steel sleeve of a building structure according to claim 7, characterized in that: The lower surface of the magnet block is fixedly connected to a transition rod (312), and the outer surface of the transition rod (312) is fixedly connected to a stirring bar (313) via a connecting rod. The stirring bar (313) is arranged in six fixed intervals around the central axis of the transition rod (312).

9. A grouting device for grouting material inside a steel sleeve of a building structure according to claim 8, characterized in that: The injection tube (23) includes an outer tube (314), and an inner tube (315) is provided inside the outer tube (314). The outer tube (314) is a metal braided tube, and the inner tube (315) is a rubber tube. An expansion cavity (316) is provided between the outer tube (314) and the inner tube (315). A rubber strip (317) is provided in the expansion cavity (316). The two ends of the rubber strip (317) are fixedly connected to the inner surface of the outer tube (314) and the outer surface of the rubber tube, respectively. Six rubber strips (317) are fixedly spaced around the central axis of the outer tube (314) and the inner tube (315).

10. A grouting method for a grouting device for grouting material inside a steel sleeve of a building structure, comprising the grouting device for grouting material inside a steel sleeve of a building structure as described in claim 9, characterized in that: Includes the following steps: S1. Remove the top cover (25) from the pressure tank (24), and remove the drive shaft and pressure cover (29) that are integrated with it at the same time; S2. After the top cover (25) is removed, slurry is injected into the pressure tank (24), and after the slurry injection is completed, the top cover (25) is put back on the top of the pressure tank (24); S3. After the top cover (25) is fastened, start the motor (27). The motor (27) starts and drives the drive shaft to rotate. After the drive shaft rotates, it will drive the pressure cover (29) to move down through the thread, pressurizing the slurry inside the pressure tank (24). S4. After being pressurized, the grout will enter the hopper (22) through the connecting hole (26) on the chassis (21), and then enter the injection pipe (23) through the hopper (22), and finally enter the steel sleeve to complete the grouting.

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