Fully mechanized coal mining face surrounding rock reinforcement grouting device

Abstract

The utility model provides a fully mechanized coal mining face surrounding rock reinforcing grouting device, and relates to the technical field of grouting, the fully mechanized coal mining face surrounding rock reinforcing grouting device comprises a stirring barrel, a stirring assembly is arranged in the stirring barrel, a filter box is fixedly arranged at the bottom of the stirring barrel, and a partition plate is arranged in the filter box and divides the filter box into a filter chamber and a slurry pumping chamber from left to right; a discharging pipe communicated with the filtering chamber is arranged on one side of the lower portion of the stirring barrel, a discharging valve is arranged on the discharging pipe, a filtering assembly is arranged in the filtering chamber, a grouting pump is fixedly arranged on one side of the filtering box, an input port of the grouting pump is communicated with the slurry pumping chamber through a conveying pipe, and an output port of the grouting pump is connected with a grouting pipe. Slurry is mixed through the stirring assembly in the stirring barrel, after the discharging valve is opened, the slurry flows into the filtering chamber through the discharging pipe, impurities are removed through the filtering assembly, the pure slurry enters the slurry pumping chamber and is finally injected into surrounding rock cracks through the grouting pump and the grouting pipe, the filtering assembly can effectively intercept the slurry impurities, abrasion of the grouting pump is reduced, and the service life of equipment is prolonged; fracture embolism is avoided, and the reinforcing quality is improved.

Description

Technical Field

[0001] This application relates to the field of grouting technology, and more specifically, to a grouting device for reinforcing the surrounding rock of a fully mechanized mining face. Background Technology

[0002] During fully mechanized mining, the original stress balance of the roof rock is disrupted by mining activities, making it prone to fracturing and delamination. Without reinforcement, the roof may suddenly collapse, causing serious injury to underground workers and equipment. Reinforcement is often achieved through grouting, using cement as the primary raw material and adding an appropriate amount of fly ash to create a cement slurry. This slurry is injected into the surrounding rock of the borehole. Under pressure, the slurry diffuses and fills the fissures and pores, then solidifies, binding the fractured surrounding rock into a unified whole, improving its strength and integrity, and enhancing its self-stabilizing ability.

[0003] However, existing grouting devices lack the function of filtering grout. When particulate impurities in the grout enter the grouting pump, they will aggravate mechanical wear and shorten the equipment life. In addition, impurities in the grout can easily form "emboli" in the cracks, hindering the diffusion of grout and resulting in insufficient local reinforcement effect. Summary of the Invention

[0004] The purpose of this application is to provide a grouting device for reinforcing the surrounding rock of a fully mechanized mining face. This device can solve the technical problems of existing grouting devices lacking slurry filtration function, which leads to particulate impurities entering the grouting pump, aggravating mechanical wear and shortening equipment life. At the same time, impurities are prone to forming plugs in the surrounding rock fissures, hindering slurry diffusion and causing insufficient local reinforcement effect.

[0005] This application provides a grouting device for reinforcing the surrounding rock of a fully mechanized mining face, including a mixing tank with a mixing assembly inside. A filter box is fixed at the bottom of the mixing tank, and a partition is provided inside the filter box, dividing the filter box into a filtration chamber and a grout extraction chamber from left to right. A feed pipe communicating with the filtration chamber is provided on one side of the lower part of the mixing tank, and a feed valve is provided on the feed pipe. A filtration assembly is provided inside the filtration chamber. A grouting pump is fixed on one side of the filter box, and the inlet of the grouting pump is connected to the grout extraction chamber through a delivery pipe. The outlet of the grouting pump is connected to a grouting pipe.

[0006] Furthermore, the filter assembly includes a filter frame and a filter screen. The filter frame is inserted into the filter chamber, and the filter screen is fixed on the filter frame. The filter screen is located above the connection between the feed pipe and the filter box. The upper part of the partition is provided with a communication port that connects the filter chamber and the slurry extraction chamber.

[0007] Furthermore, a sealing ring is provided at the connection between the filter frame and the filter box, and a handle is fixedly provided on the outside of the filter frame.

[0008] Furthermore, the stirring assembly includes a mounting plate, a stirring motor, a stirring shaft, and multiple stirring rods. The mounting plate is fixed to the top of the stirring tank, the stirring motor is fixed to the mounting plate, the stirring shaft is rotatably disposed inside the stirring tank, the upper end of each stirring rod is rotatably connected to the mounting plate, the upper end of each stirring rod is connected to the output shaft of the stirring motor, and multiple stirring rods are evenly fixed on the stirring shaft.

[0009] Furthermore, the bottom of the filter box is fixedly equipped with multiple casters with brakes, and a push-pull rod is fixedly equipped on one side of the filter box.

[0010] Furthermore, the feed pipe is provided with an inspection port, and the inspection port is provided with a sealed inspection cover.

[0011] Furthermore, the lower part of the filter box is provided with a discharge pipe that communicates with the filter chamber. The discharge pipe is located below the filter screen and is equipped with a discharge valve.

[0012] The beneficial effects of this utility model are:

[0013] This invention uses a mixing component in a mixing tank to mix slurry. After the discharge valve is opened, the slurry flows into the filtration chamber through the discharge pipe. Impurities are removed by the filtration component, and the pure slurry enters the pumping chamber. Finally, it is injected into the surrounding rock fissures through the grouting pump and grouting pipe to achieve reinforcement. The filtration component in the filtration chamber effectively intercepts impurities in the slurry, reduces wear on the grouting pump, extends the equipment life, and ensures the diffusion of the slurry to avoid fissure blockage and improve the reinforcement quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0016] Figure 2 These are cross-sectional views of some embodiments of this application;

[0017] The reference numerals in the attached figures are as follows:

[0018] 1. Mixing tank; 2. Mixing assembly; 21. Mounting plate; 22. Mixing motor; 23. Mixing shaft; 24. Mixing rod; 3. Filter box; 31. Filter chamber; 32. Slurry extraction chamber; 4. Partition plate; 5. Discharge pipe; 6. Discharge valve; 7. Filter assembly; 71. Filter frame; 72. Filter screen; 8. Grouting pump; 9. Conveying pipe; 10. Grouting pipe; 11. Handle; 12. Casters; 13. Push-pull rod; 14. Inspection port; 15. Inspection cover; 16. Discharge pipe; 17. Discharge valve. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0026] like Figure 1 and Figure 2 As shown, this application provides a grouting device for reinforcing the surrounding rock of a fully mechanized mining face, including a mixing tank 1, a mixing assembly 2 inside the mixing tank 1, a filter box 3 fixedly installed at the bottom of the mixing tank 1, a partition 4 inside the filter box 3, the partition 4 dividing the filter box 3 from left to right into a filter chamber 31 and a grout extraction chamber 32, a discharge pipe 5 connected to the filter chamber 31 on one side of the lower part of the mixing tank 1, a discharge valve 6 installed on the discharge pipe 5, a filter assembly 7 inside the filter chamber 31, and a grouting pump 8 fixedly installed on one side of the filter box 3, the inlet of the grouting pump 8 being connected to a delivery pipe 9. The grouting pump 8 is connected to the pumping chamber 32, and the output port of the grouting pump 8 is connected to the grouting pipe 10. The grout is mixed by the mixing component 2 in the mixing tank 1. After the discharge valve 6 is opened, the grout flows into the filter chamber 31 through the discharge pipe 5. The filter component 7 removes impurities, and the pure grout enters the pumping chamber 32. Finally, it is injected into the surrounding rock fissures through the grouting pump 8 and the grouting pipe 10 to achieve reinforcement. The filter component 7 in the filter chamber 31 effectively intercepts impurities in the grout, reduces the wear of the grouting pump 8, extends the equipment life, and at the same time ensures the diffusion of the grout, avoids fissure embolism, and improves the reinforcement quality.

[0027] like Figure 1 and Figure 2 As shown, the filter assembly 7 includes a filter frame 71 and a filter screen 72. The filter frame 71 is installed in the filter chamber 31 in a pull-out manner, and the filter screen 72 is fixed on the filter frame 71. The filter screen 72 is located above the connection between the feed pipe 5 and the filter box 3. The upper part of the partition 4 is provided with a communication port that connects the filter chamber 31 and the slurry extraction chamber 32. The pull-out filter frame 71 facilitates the quick disassembly and cleaning and maintenance of the filter screen 72. The filter screen 72, located above the connection between the feed pipe 5 and the filter box 3, can effectively intercept particulate impurities in the slurry and prevent impurities from entering the grouting pump 8. The communication port on the upper part of the partition 4 ensures that the filtered pure slurry flows into the slurry extraction chamber 32 by gravity, while impurities are trapped below the filter chamber 31, achieving efficient separation and ensuring the stable operation of the grouting operation.

[0028] like Figure 1 and Figure 2As shown, a sealing ring (not shown in the figure) is provided at the connection between the filter frame 71 and the filter box 3. A handle 11 is fixed on the outside of the filter frame 71. The sealing ring ensures the sealing of the connection between the filter frame 71 and the filter box 3, preventing slurry from leaking out from the connection between the filter frame 71 and the filter box 3, avoiding waste and pollution. The handle 11 on the outside of the filter frame 71 facilitates the quick insertion and removal and maintenance of the filter frame 71, improving the convenience of operation.

[0029] like Figure 1 and Figure 2 As shown, the mixing assembly 2 includes a mounting plate 21, a mixing motor 22, a mixing shaft 23, and multiple mixing rods 24. The mounting plate 21 is fixed to the top of the mixing tank 1, the mixing motor 22 is fixed to the mounting plate 21, the mixing shaft 23 is rotatably disposed inside the mixing tank 1, the upper end of the mixing rod 24 is rotatably connected to the mounting plate 21, and the upper end of the mixing rod 24 is connected to the output shaft of the mixing motor 22. Multiple mixing rods 24 are evenly fixed on the mixing shaft 23. The mounting plate 21 provides stable support for the motor and the mixing shaft 23. The motor directly drives the mixing shaft 23 to rotate, and the mixing shaft 23 drives the mixing rods 24 to rotate, thereby achieving efficient mixing of the slurry raw materials and making the slurry uniformly mixed.

[0030] like Figure 1 and Figure 2 As shown, the bottom of the filter box 3 is fixed with multiple casters 12 with brakes, and a push-pull rod 13 is fixed on one side of the filter box 3. The design of the casters 12 with brakes allows the filter box 3 to move flexibly and be fixed quickly, which is convenient for adjusting the grouting position in the narrow space underground. The setting of the push-pull rod 13 further improves the mobility of the device and reduces the burden of manual handling. It is especially suitable for the rapid advancement needs of fully mechanized mining faces and can significantly improve the efficiency and convenience of grouting operations.

[0031] like Figure 1 and Figure 2 As shown, the feed pipe 5 is provided with an inspection port 14, and a sealed inspection cover 15 is provided at the inspection port 14. The sealed inspection cover 15 can prevent grout leakage during daily operation, which can not only ensure the continuity of grouting, but also reduce grout waste during maintenance. By opening the inspection cover 15, it is convenient to quickly clean the impurities and blockages in the pipe or check the grout flow status through the inspection port 14 on the feed pipe 5, so as to ensure the safety of operation.

[0032] like Figure 2 As shown, the lower part of the filter box 3 is provided with a discharge pipe 16 that communicates with the filter chamber 31. The discharge pipe 16 is located below the filter screen 72. The discharge pipe 16 is provided with a discharge valve 17. The discharge valve 17 can be opened as needed, and the impurities deposited below the filter screen 72 can be directly discharged through the discharge pipe 16 to avoid the accumulation of impurities affecting the continuity of grouting.

[0033] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A grouting device for reinforcing the surrounding rock of a fully mechanized mining face, characterized in that: The device includes a mixing tank containing a mixing assembly. A filter box is fixedly mounted at the bottom of the mixing tank, and a partition is provided inside the filter box, dividing the filter box into a filtration chamber and a slurry extraction chamber from left to right. A discharge pipe communicating with the filtration chamber is provided on one side of the lower part of the mixing tank, and a discharge valve is provided on the discharge pipe. A filtration assembly is provided inside the filtration chamber. A grouting pump is fixedly mounted on one side of the filter box. The inlet of the grouting pump is connected to the slurry extraction chamber through a delivery pipe, and the outlet of the grouting pump is connected to a grouting pipe.

2. The grouting device for reinforcing the surrounding rock of a fully mechanized mining face according to claim 1, characterized in that: The filter assembly includes a filter frame and a filter screen. The filter frame is inserted into the filter chamber, and the filter screen is fixed on the filter frame. The filter screen is located above the connection between the feed pipe and the filter box. The upper part of the partition is provided with a communication port that connects the filter chamber and the slurry extraction chamber.

3. A grouting device for reinforcing the surrounding rock of a fully mechanized mining face according to claim 2, characterized in that: A sealing ring is provided at the connection between the filter frame and the filter box, and a handle is fixed to the outside of the filter frame.

4. A grouting device for reinforcing surrounding rock in a fully mechanized mining face according to claim 1, characterized in that: The stirring assembly includes a mounting plate, a stirring motor, a stirring shaft, and multiple stirring rods. The mounting plate is fixed to the top of the stirring tank, the stirring motor is fixed to the mounting plate, the stirring shaft is rotatably disposed inside the stirring tank, the upper end of each stirring rod is rotatably connected to the mounting plate, and the upper end of each stirring rod is connected to the output shaft of the stirring motor. Multiple stirring rods are evenly fixed on the stirring shaft.

5. A grouting device for reinforcing the surrounding rock of a fully mechanized mining face according to claim 1, characterized in that: The bottom of the filter box is fixed with multiple casters with brakes, and a push-pull rod is fixed on one side of the filter box.

6. A grouting device for reinforcing the surrounding rock of a fully mechanized mining face according to claim 1, characterized in that: The feed pipe is provided with an inspection port, and the inspection port is provided with a sealed inspection cover.

7. A grouting device for reinforcing the surrounding rock of a fully mechanized mining face according to claim 2, characterized in that: The lower part of the filter box is provided with a discharge pipe that communicates with the filter chamber. The discharge pipe is located below the filter screen and is equipped with a discharge valve.

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