A grouting device for mine reinforcement to prevent blockage

Abstract

This invention discloses an anti-clogging grouting device for mine reinforcement, belonging to the field of grouting technology. It includes a grouting machine, an outer grouting pipe device, and an inner grouting pipe device. The inner grouting pipe device includes an inner grouting pipe, a push rod, and a push plate. The push rod passes through the inner grouting pipe and is fixedly installed on its axis. The outer grouting pipe device includes an outer grouting pipe and an end cap. The end cap is installed at one end of the outer grouting pipe, and one end of the push rod passes through the end cap and is slidably connected within it. The push plate is fixedly installed at one end of the push rod outside the outer grouting pipe. A limit ring is provided inside the outer grouting pipe. The inner grouting pipe slides within the outer grouting pipe. When the inner and outer grouting ports are aligned, the grouting ports on the outer and inner grouting pipes are aligned. This invention can prevent grouting blockage during the reinforcement of sandstone mines.

Description

Technical Field

[0001] This invention belongs to the field of grouting technology, and in particular relates to an anti-clogging grouting device for mine reinforcement. Background Technology

[0002] my country is rich in coal resources, and mine reinforcement is often necessary during mining to prevent accidents. High-pressure grouting is injected into the mine sidewalls, and the grout fills and binds the surface, actively forming a self-supporting structure around the sidewalls. However, some mines are located in sandstone geological conditions, where the grouting pipes often become blocked by fine sandstone particles during insertion into the sidewalls, resulting in high grouting pressure or even failure to grout. Therefore, it is urgent for those skilled in the art to solve the problem of blockage prevention during grouting reinforcement in sandstone geological conditions. Summary of the Invention

[0003] In view of this, the present invention provides a grouting device for mine reinforcement to prevent blockage and solve the above problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A grouting device for mine reinforcement to prevent blockage includes: a grouting machine, an outer grouting pipe device, and an inner grouting pipe device. The inner grouting pipe device includes an inner grouting pipe, a push rod, and a push plate. The push rod passes through the inner grouting pipe and is fixedly installed on the axis of the inner grouting pipe. The outer grouting pipe device includes an outer grouting pipe and an end cap. The end cap is installed at one end of the outer grouting pipe. One end of the push rod passes through the end cap and is slidably connected within the end cap. The push plate is fixedly installed at one end of the push rod. Outside the grouting outer pipe, a limiting ring is provided inside the grouting outer pipe to limit the grouting inner pipe. The grouting outer pipe is provided with an external grouting port, and the grouting inner pipe is provided with an internal grouting port. Grouting ports are provided on the surfaces of both the grouting outer pipe and the grouting inner pipe. The grouting machine is connected to the external grouting port. The grouting inner pipe slides inside the grouting outer pipe. When the internal grouting port is aligned with the external grouting port, the grouting ports on the grouting outer pipe and the grouting inner pipe are aligned.

[0006] Furthermore, the grouting inner tube device also includes a grouting ball, which is fixedly installed at the other end of the push rod. One end of the grouting outer tube is provided with a conical grouting port, and the grouting ball is located outside the conical grouting port.

[0007] Furthermore, a support rod and a support tube are provided inside the end of the grouting outer pipe away from the end cap. Around the axis of the grouting outer pipe, one end of a plurality of support rods is circumferentially welded to the inner wall of the grouting outer pipe, and the other end is welded to the outer wall of the support tube. The support tube is located on the axis of the grouting outer pipe and is used to support the distal end of the push rod.

[0008] Furthermore, it also includes a filtration device, a cement connecting pipe, and a filter connecting pipe. The filtration device includes a filter cylinder, a cylinder cover, a motor, and an auger. The cement connecting pipe is connected at both ends to the grouting machine and the filter cylinder, respectively. The cylinder cover is installed at the far end of the filter cylinder. The auger is rotatably installed in the filter cylinder. One end of the auger is rotatably connected to the cylinder cover, and the other end of the auger extends out of the filter cylinder and is fixedly connected to the output end of the motor. A filtration section is provided on the side of the filter cylinder near the motor. One end of the filter connecting pipe is connected to the filtration section, and the other end is connected to the grouting port. A slag storage section is provided between the auger and the cylinder cover.

[0009] Furthermore, it also includes a T-pipe and a water glass connecting pipe, the T-pipe being installed on the grouting port, the other end of the filter connecting pipe being connected to the T-pipe, and the two ends of the water glass connecting pipe being connected to the grouting machine and the T-pipe, respectively.

[0010] The beneficial effects of this invention are as follows:

[0011] During the insertion of the grouting outer pipe into the mine sidewall, the grouting outer opening and the grouting inner opening, as well as the grouting ports on both the outer and inner pipes, are not aligned. When the conical tip of the grouting outer pipe reaches the set position, the push plate is pushed, causing the grouting inner pipe to slide within the grouting outer pipe, aligning the grouting outer opening and the grouting inner opening, and the grouting ports on both the outer and inner pipes. The grouting machine is then activated to reinforce the mine sidewall with grout. The grouting ball extends out of the conical grouting port as the grouting inner pipe slides within the grouting outer pipe. Slurry is deposited at the grouting port, and between the conical grouting port and the grouting ball... The grout overflows from the surface of the grouting ball, forming a cylindrical spherical diffusion pattern, preventing needle-like diffusion which wastes materials and is ineffective for mine reinforcement. The slurry enters the filter cylinder through the cement connecting pipe, while lumpy impurities or slag are continuously pushed to the slag storage section by the auger. Under high pressure inside the filter cylinder, the cement passes through the filter section and enters the connecting pipe for grouting, preventing blockages inside the grouting pipe. The use of a three-way pipe and a water glass connecting pipe also enables dual-liquid grouting, improving the mine reinforcement effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of a grouting device for mine reinforcement to prevent blockage.

[0014] Figure 2 This is a schematic diagram of the structure during grouting of the outer and inner grouting pipes.

[0015] Figure 3 This is a schematic diagram of the grouting outer pipe.

[0016] Figure 4 This is a schematic diagram of the grouting inner pipe.

[0017] Figure 5 This is a schematic diagram of grouting reinforcement in a mine.

[0018] In the figure:

[0019] 10-Grouting machine, 20-Grouting outer pipe device, 21-Grouting outer pipe, 211-Limiting ring, 212-Grouting outer port, 213-Conical grouting port, 214-Support rod, 215-Support pipe, 22-End cap, 30-Grouting inner pipe device, 31-Grouting inner pipe, 311-Grouting inner port, 32-Push rod, 33-Push plate, 34-Grouting ball, 40-Grouting port, 50-Filter device, 51-Filter cylinder, 511-Filter section, 512-Slag storage section, 52-Cylinder cover, 53-Motor, 54-Auger, 60-Cement connecting pipe, 70-Filter connecting pipe, 80-Tee pipe, 90-Water glass connecting pipe, 100-Mine, 110-Sandstone. Detailed Implementation

[0020] 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.

[0021] See attached document Figure 1-5As shown, the present invention provides a grouting device for mine reinforcement to prevent blockage, comprising: a grouting machine 10, an outer grouting pipe device, and an inner grouting pipe device 30. The inner grouting pipe device 30 includes an inner grouting pipe 31, a push rod 32, and a push plate 33. The push rod 32 passes through the inner grouting pipe 31 and is fixedly installed on the axis of the inner grouting pipe 31. The outer grouting pipe device includes an outer grouting pipe 21 and an end cap 22. The end cap 22 is installed at one end of the outer grouting pipe 21. One end of the push rod 32 passes through the end cap 22 and is slidably connected in the end cap 22. The push plate 33 is fixedly installed on one end of the push rod 32. The end is located outside the grouting outer pipe 21. The grouting outer pipe 21 is provided with a limit ring 211 inside to limit the grouting inner pipe 31. The grouting outer pipe 21 is provided with a grouting outer port 212, and the grouting inner pipe 31 is provided with a grouting inner port 311. Grouting ports 40 are provided on the surfaces of both the grouting outer pipe 21 and the grouting inner pipe 31. The grouting machine 10 is connected to the grouting outer port 212. The grouting inner pipe 31 slides in the grouting outer pipe 21. When the grouting inner port 311 is aligned with the grouting outer port 212, the grouting ports 40 on the grouting outer pipe 21 and the grouting inner pipe 31 are aligned. The grouting outer pipe 21 extends into the sandstone 110 on the side wall of the mine 100. During this process, the grouting outer port 212 and the grouting inner port 311, as well as the grouting ports 40 on the grouting outer pipe 21 and the grouting inner pipe 31, are not aligned, so small particles in the sandstone 110 will not enter the interior of the grouting outer pipe 21. When the conical top of the grouting outer pipe 21 reaches the set position, the push plate 33 is pushed to make the grouting inner pipe 31 slide inside the grouting outer pipe 21, aligning the grouting outer port 212 and the grouting inner port 311, as well as the grouting ports 40 on the grouting outer pipe 21 and the grouting inner pipe 31. The grouting machine 10 is then started to grout and reinforce the side wall of the mine 100. No blockage will occur during the reinforcement grouting process of the mine 100.

[0022] In a preferred embodiment, the grouting inner tube device 30 further includes a grouting ball 34, which is fixedly installed at the other end of the push rod 32. One end of the grouting outer tube 21 is provided with a conical grouting port 213, and the grouting ball 34 is located outside the conical grouting port 213. The grouting ball 34 extends out of the conical grouting port 213 as the grouting inner tube 31 slides inside the grouting outer tube 21. The slurry overflows from the grouting port 40 and from the surface (cut surface) of the grouting ball 34 between the conical grouting port 213 and the grouting ball 34, forming a columnar spherical diffusion to prevent needle-like diffusion. Needle-like diffusion wastes materials and is not conducive to the reinforcement of the mine 100.

[0023] In a preferred embodiment, a support rod 214 and a support tube 215 are provided inside the end of the grouting outer pipe 21 away from the end cap 22. Around the axis of the grouting outer pipe 21, one end of a plurality of support rods 214 is circumferentially welded to the inner wall of the grouting outer pipe 21, and the other end is welded to the outer wall of the support tube 215. The support tube 215 is located on the axis of the grouting outer pipe 21. Since the push rod 32 is relatively long, the support tube 215 is used to support the far end of the push rod 32.

[0024] In a preferred embodiment, a grouting device for mine reinforcement and anti-clogging further includes a filter device 50, a cement connecting pipe 60, and a filter connecting pipe 70. The filter device 50 includes a filter cylinder 51, a cylinder cover 52, a motor 53, and an auger 54. The cement connecting pipe 60 is connected at both ends to the grouting machine 10 and the filter cylinder 51, respectively. The cylinder cover 52 is installed at the far end of the filter cylinder 51. The auger 54 is rotatably installed in the filter cylinder 51. One end of the auger 54 is rotatably connected to the cylinder cover 52, and the other end of the auger 54 extends out of the filter cylinder 51 and is fixedly connected to the output end of the motor 53. A filter section 511 is provided on the side of the filter cylinder 51 closest to the motor 53. One end of the filter connecting pipe 70 is connected to the filter section 511, and the other end is connected to the grouting outlet 212. A slag storage section 512 is provided between the auger 54 and the cylinder cover 52. The slurry enters the filter cylinder 51 through the cement connecting pipe 60. Lumpy impurities or slag are continuously pushed to the slag storage section 512 by the auger 54. Under high pressure inside the filter cylinder 51, the cement passes through the filter section 511 and enters the connecting outer pipe via the filter connecting pipe 70 for grouting, preventing blockage inside the grouting pipe. After a period of time, the cylinder cover 52 is opened, and the impurities or slag pushed and accumulated in the slag storage section 512 by the auger 54 are removed.

[0025] In a preferred embodiment, a grouting device for mine reinforcement further includes a three-way pipe 80 and a water glass connecting pipe 90. The three-way pipe 80 is installed on the grouting outlet 212. The other end of the filter connecting pipe 70 is connected to the three-way pipe 80. The two ends of the water glass connecting pipe 90 are respectively connected to the grouting machine 10 and the three-way pipe 80. At this time, the grouting machine 10 is a dual-liquid grouting machine 10, which can alternately deliver cement slurry and water glass colloid into the grouting outlet 21 for grouting, thereby improving the reinforcement effect of the mine 100.

[0026] Example

[0027] The grouting outer pipe 21 extends into the sandstone 110 on the sidewall of the mine 100. During this process, the grouting outer port 212 and the grouting inner port 311, as well as the grouting ports 40 on the grouting outer pipe 21 and the grouting inner pipe 31, are not aligned, preventing small particles in the sandstone 110 from entering the grouting outer pipe 21. When the conical tip of the grouting outer pipe 21 reaches the set position, the push plate 33 is pushed, causing the grouting inner pipe 31 to slide inside the grouting outer pipe 21, aligning the grouting outer port 212 with the grouting inner port 311, as well as the grouting ports 40 on the grouting outer pipe 21 and the grouting inner pipe 31. Simultaneously, the grouting ball 34 extends out of the conical grouting port 213. The grouting machine 10 is started to reinforce the sidewall of the mine 100 with grout. The slurry enters the filter cylinder 51 through the cement connecting pipe 60, and lumpy impurities or slag are filtered out. The auger 54 continuously pushes the cement into the slag storage section 512. Under the high pressure inside the filter cylinder 51, the cement passes through the filter section 511 and enters the grouting outer pipe 21 via the filter connecting pipe 70 for grouting, preventing blockage inside the grouting pipe. After a period of time, the cylinder cover 52 is opened to remove the impurities or slag pushed and accumulated in the slag storage section 512 by the auger 54. Water glass enters the grouting outer pipe 21 from the grouting machine 10 through the water glass connecting pipe 90. Slurry and water glass alternately enter the grouting outer pipe 21. Water glass or slurry overflows from the grouting port 40 and between the conical grouting port 213 and the grouting ball 34, adhering to the surface (cut surface) of the grouting ball 34, forming a columnar spherical diffusion, which will not cause blockage during the reinforcement grouting process of the mine 100.

[0028] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grouting device for mine reinforcement to prevent blockage, characterized in that, include: The device comprises a grouting machine, an outer grouting pipe assembly, and an inner grouting pipe assembly. The inner grouting pipe assembly includes an inner grouting pipe, a push rod, and a push plate. The push rod passes through the inner grouting pipe and is fixedly installed on its axis. The outer grouting pipe assembly includes an outer grouting pipe and an end cap. The end cap is installed at one end of the outer grouting pipe, and one end of the push rod passes through the end cap and is slidably connected within it. The push plate is fixedly installed at one end of the push rod outside the outer grouting pipe. A limit ring is provided inside the outer grouting pipe to limit the movement of the inner grouting pipe. The outer grouting pipe has an outer grouting port, and the inner grouting pipe has an inner grouting port. Both the outer and inner grouting pipes have grouting ports on their surfaces. The grouting machine communicates with the outer grouting port. The inner grouting pipe slides within the outer grouting pipe. When the inner grouting port aligns with the outer grouting port, the grouting ports on the outer and inner grouting pipes are aligned. The grouting inner tube device also includes a grouting ball, which is fixedly installed at the other end of the push rod. One end of the grouting outer tube is provided with a conical grouting port, and the grouting ball is located outside the conical grouting port. It also includes a filtration device, a cement connecting pipe, and a filter connecting pipe. The filtration device includes a filter cylinder, a cylinder cover, a motor, and an auger. The cement connecting pipe is connected at both ends to the grouting machine and the filter cylinder, respectively. The cylinder cover is installed at the far end of the filter cylinder. The auger is rotatably installed in the filter cylinder. One end of the auger is rotatably connected to the cylinder cover, and the other end of the auger extends out of the filter cylinder and is fixedly connected to the output end of the motor. A filtration section is provided on the side of the filter cylinder near the motor. One end of the filter connecting pipe is connected to the filtration section, and the other end is connected to the grouting port. A slag storage section is provided between the auger and the cylinder cover. The slurry enters the filter cylinder through the cement connecting pipe. Lumpy impurities or slag are continuously pushed to the slag storage section by the auger. Under the pressure inside the filter cylinder, the cement passes through the filter section and enters the grouting outer pipe through the filter connecting pipe for grouting.

2. The anti-clogging grouting device for mine reinforcement according to claim 1, characterized in that, The grouting outer pipe has a support rod and a support tube inside at the end away from the end cap. Around the axis of the grouting outer pipe, one end of a plurality of support rods is circumferentially welded to the inner wall of the grouting outer pipe, and the other end is welded to the outer wall of the support tube. The support tube is located on the axis of the grouting outer pipe and is used to support the distal end of the push rod.

3. The anti-clogging grouting device for mine reinforcement according to claim 1, characterized in that, It also includes a T-pipe and a water glass connecting pipe, the T-pipe being installed on the grouting port, the other end of the filter connecting pipe being connected to the T-pipe, and the two ends of the water glass connecting pipe being connected to the grouting machine and the T-pipe, respectively.

Images