Coal mine gas hole spraying prevention device

Abstract

The utility model relates to the technical field of coal mining, in particular to a coal mine gas spraying prevention device, and solves the problems that most of existing protection devices in the prior art cannot be accurately adjusted according to actual requirements of drilling operation, so that the protection effect is limited, the dust falling effect of the existing protection devices is often not ideal, and the working efficiency is high. And the device is easy to drift away to harm operators, so that the practicability of the device is reduced. A coal mine gas spraying hole preventing device comprises a machine body, a fixing plate is fixedly connected to one side of the machine body, a mounting box is arranged above the fixing plate, and the bottom of the mounting box is fixedly connected with the two sides of the top of the fixing plate through two air cylinders. According to the device, harmful substances such as water granulated slag and gas generated in the drilling process are effectively prevented from escaping, potential hazards to the working environment and personnel are greatly reduced, the quality of the working environment, the comfort level of the personnel and the working efficiency are improved, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining, in particular to a coal mine gas spraying prevention device. Background Art

[0002] As an important part of the energy industry, the safety and efficiency of coal mining operations have always been the focus of the industry. During the coal mining process, drilling operations are an indispensable part, which directly affects the coal mining efficiency and the safe production of the mine. However, during the drilling operation, the release of gas, the generation of water slag, and the flying of dust, that is, drilling hole spraying, pose a serious threat to the working environment and the safety of the operators.

[0003] At present, there are already some protective devices for coal mine drilling operations on the market. Most of these devices adopt the method of physical isolation, and surround the drill bit by setting a protective shell to reduce the harm of harmful substances generated during the drilling process to the working environment and personnel. These existing technologies have improved the safety of the working environment to a certain extent.

[0004] However, most of the existing protective devices have relatively simple structures, and the protective shells of the existing protective devices mostly adopt a fixed structure design and installation, which cannot be accurately adjusted according to the actual needs of the drilling operation, resulting in limited protection effects. Moreover, the existing protective devices usually use dust extraction equipment to absorb dust and other impurities generated by the drilling, but the dust reduction effect is often not ideal, and most of them can only reduce a part of the dust concentration, and it is easy to float out and cause harm to the operators, leading to the reduction of the practicality of the device. Therefore, we propose a coal mine gas spraying prevention device to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a coal mine gas spraying prevention device, which solves the problems that most of the existing protective devices in the prior art cannot be accurately adjusted according to the actual needs of the drilling operation, resulting in limited protection effects, and the dust reduction effect of the existing protective devices is often not ideal, and it is easy to float out and cause harm to the operators, leading to the reduction of the practicality of the device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A gas outburst prevention device for coal mines, comprising a machine body. One side of the machine body is fixedly connected with a fixing plate. Above the fixing plate, there is an installation box, and the bottom of the installation box is fixedly connected with both sides of the top of the fixing plate through two cylinders. A limiting groove is opened on the side of the installation box away from the machine body. One side of the fixing plate away from the machine body is fixedly connected with a drilling machine, and a drill bit is arranged on the top of the drilling machine. On both sides of the drill bit, there are protective shells, and through grooves adapted to the outside of the drill bit are opened at the bottoms of the two protective shells. A clamping assembly connected to the two protective shells is arranged inside the installation box. Exhaust pipes are communicated with the outer sides of the two protective shells away from each other. A discharge pipe is communicated with one side of one of the protective shells, and valves are installed on the outsides of the two exhaust pipes and the discharge pipe.

[0008] Preferably, the clamping assembly includes a motor arranged on one side of the installation box, and one side of the motor is fixedly connected with the outer wall of one side of the installation box through bolts. The output end of the motor is drivingly connected with a bidirectional lead screw, and the end of the bidirectional lead screw is rotatably connected with the inner wall of one side of the installation box.

[0009] Preferably, the clamping assembly further includes two screw sleeves sleeved on both ends of the outside of the bidirectional lead screw. On one side of the outer rings of the two screw sleeves, there are fixedly connected limiting blocks that are in clearance fit with the limiting groove. On the side of the two limiting blocks away from the screw sleeves, they are fixedly connected with the adjacent outer side walls of the protective shells.

[0010] Preferably, on one side of the top of the machine body, there is fixedly connected a water tank. On one side of the water tank, there are symmetrically communicated two water delivery pipes. The ends of the water delivery pipes away from the water tank penetrate through the side walls of the protective shells and are communicated with a water storage pipe, and one side of the water storage pipe is fixedly connected with the adjacent inner side wall of the protective shell. On the side of the water storage pipe away from the water delivery pipe, there are fixedly connected two spray heads.

[0011] Preferably, sealing gaskets are fixedly connected to the adjacent side walls of the two protective shells and the inner walls of the through grooves.

[0012] Preferably, a scale is fixedly connected to one side of the water tank.

[0013] The utility model has the following beneficial effects:

[0014] The rotation of the bidirectional lead screw driven by the motor realizes the precise adjustment and tight closure of the protective shell. This design not only ensures the stability of the drill bit during operation, but also forms an effective sealing barrier through the compression of the gasket, effectively preventing the escape of harmful substances such as water slag and gas during drilling, greatly reducing the potential hazards to the working environment and personnel. Secondly, the introduction of the spray dust suppression system further improves the safety of the working environment. The water pump transports the water in the water tank through the water delivery pipe to the water storage pipe, and then sprays it out in an atomized form through the nozzle, quickly covering the surrounding of the drill bit, wetting and settling the ash residue generated during drilling, effectively reducing the dust concentration in the air. This not only reduces the health hazards of dust to the operating personnel, but also reduces the noise and temperature at the operation site, providing a more comfortable and safe working environment for the operating personnel. In addition, the device also has a high degree of flexibility and adaptability. By adjusting the position of the protective shell and the parameters of the spray dust suppression system, it can meet the requirements under different operating conditions, ensure the continuity and efficiency of the drilling operation, realize the effective control of water slag, gas and dust generated during the drilling process, provide a safer, more efficient and environmentally friendly solution for coal mining operations, and significantly improve the quality of the working environment and the comfort and work efficiency of the operating personnel. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 Structural schematic diagram of the present invention;

[0017] Figure 2 Structural schematic diagram of the cylinder of the present invention;

[0018] Figure 3 Structural schematic diagram of the nozzle of the present invention;

[0019] Figure 4 Cross-sectional view structural schematic diagram of the installation box of the present invention;

[0020] Figure 5 Structural schematic diagram of the gasket of the present invention.

[0021] In the figure: 1, the body; 2, the drilling machine; 3, the fixing plate; 4, the mounting box; 5, the cylinder; 6, the water tank; 7, the water delivery pipe; 8, the drill bit; 9, the protective shell; 10, the exhaust pipe; 11, the discharge pipe; 12, the water storage pipe; 13, the spray head; 14, the motor; 15, the bidirectional lead screw; 16, the screw sleeve; 17, the limit block; 18, the gasket. Detailed implementation mode

[0022] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0023] Refer to Figures 1-5 , a coal mine gas outburst prevention device, including a body 1, one side of the body 1 is fixedly connected with a fixing plate 3, above the fixing plate 3 is provided with a mounting box 4, and the bottom of the mounting box 4 is fixedly connected with both sides of the top of the fixing plate 3 through two cylinders 5. A limiting groove is opened on one side of the mounting box 4 away from the body 1. One side of the fixing plate 3 away from the body 1 is fixedly connected with a drilling machine 2, and a drill bit 8 is arranged on the top of the drilling machine 2. Protective shells 9 are arranged on both sides of the drill bit 8. The protective shells 9 can protect and collect the outside of the drill bit 8 to avoid the leakage of ash slag and gas generated during drilling operations, which affects the working environment. First, through the telescopic function of the cylinder 5, the position of the mounting box 4 (including the clamping assembly and the two protective shells 9) relative to the drilling machine 2 and the drill bit 8 is adjusted to ensure that the top of the drill bit 8 can move to the required working position. And through grooves adapted to the outside of the drill bit 8 are opened at the bottoms of the two protective shells 9. A clamping assembly connected to the two protective shells 9 is arranged inside the mounting box 4. Exhaust pipes 10 are communicated with the mutually remote sides of the two protective shells 9. One side of one of the protective shells 9 is communicated with a discharge pipe 11, and valves are installed on the exteriors of the two exhaust pipes 10 and the discharge pipe 11. Personnel can timely open the valves on the exhaust pipes 10 to safely discharge the gas collected in the protective shells 9 to the external environment or a specific collection device through the exhaust pipes 10. At the same time, the waste water and slag after spray dust reduction are discharged through the discharge pipe 11, which is convenient for personnel to collect and process.

[0024] Further, the clamping assembly includes a motor 14 arranged on one side of the mounting box 4, and one side of the motor 14 is fixedly connected to the outer wall of one side of the mounting box 4 through bolts. The output end of the motor 14 is drivingly connected with a bidirectional lead screw 15, and the end of the bidirectional lead screw 15 is rotatably connected to the inner wall of one side of the mounting box 4. Through the setting of the mounting box 4, the mounting box 4 can provide a stable supporting force for the motor 14 and the bidirectional lead screw 15, etc., making the motor 14 drive the bidirectional lead screw 15 to operate more stably, and at the same time providing a protective effect for it.

[0025] Further, the clamping assembly further includes two screw sleeves 16 sleeved on both ends of the bidirectional lead screw 15. On one side of the outer ring of each of the two screw sleeves 16, a limit block 17 is fixedly connected, which is in clearance fit with the limit groove. On the side of each of the two limit blocks 17 away from the screw sleeve 16, it is fixedly connected to the adjacent outer side wall of the protective shell 9. Through the setting of the limit block 17, the limit block 17 can limit the screw sleeve 16 through the limit groove, preventing the screw sleeve 16 from rotating together with the bidirectional lead screw 15. By starting the motor 14 to drive the bidirectional lead screw 15 to rotate, the bidirectional lead screw 15 immediately causes the two screw sleeves 16 to generate a lateral displacement of approaching each other. Then, the screw sleeve 16 drives the adjacent protective shell 9 to move through the limit block 17 on one side of its outer ring, so that the two protective shells 9 approach each other to squeeze the outside of the drill bit 8, and the gap between the two protective shells 9 is sealed by two sealing gaskets 18, thus effectively providing a protective effect on the drill bit 8, preventing the water and slag during drilling from falling out of the outside of the protective shell 9 and affecting the operation of personnel. At the same time, after the drilling operation is completed, by reversely rotating the motor 14 to make the two protective shells 9 move away from each other, it is also convenient for personnel to clean the inside of the protective shell 9 and the outside of the drill bit 8.

[0026] Further, on one side of the top of the machine body 1, a water tank 6 is fixedly connected. On one side of the water tank 6, two water pipes 7 are symmetrically communicated. The end of the water pipe 7 away from the water tank 6 penetrates the side wall of the protective shell 9 and is communicated with a water storage pipe 12, and one side of the water storage pipe 12 is fixedly connected to the adjacent inner side wall of the protective shell 9. On the side of the water storage pipe 12 away from the water pipe 7, two spray heads 13 are fixedly connected. Through the setting of the water storage pipe 12, by turning on the water pump built in the water tank 6 to transmit water through the water pipe 7 into the water storage pipe 12, and then continuously spraying out through the spray heads 13, it can effectively spray and reduce the dust of the ash slag generated during drilling.

[0027] Further, sealing gaskets 18 are fixedly connected to the adjacent side walls of the two protective shells 9 and the inner wall of the through groove. Through the setting of the sealing gaskets 18, the sealing gaskets 18 can block the gap between the two protective shells 9. The use of the sealing gaskets 18 greatly improves the sealing effect between the protective shells 9, effectively preventing the water and slag and gas generated during drilling from leaking out, and further ensuring the safety of the operation environment.

[0028] Further, a scale is fixedly connected to one side of the water tank 6. Through the setting of the scale, it is convenient for personnel to observe the water level in the water tank 6 and facilitate personnel to add water in time.

[0029] To sum up:

[0030] The starting motor 14 is driven to drive the bidirectional lead screw 15 to start rotating. Since the limit block 17 is in clearance fit with the limit groove on the mounting box 4, the rotation of the nut sleeve 16 is effectively restricted, ensuring that the nut sleeve 16 can only move along the axial direction of the bidirectional lead screw 15. With the continuous rotation of the bidirectional lead screw 15, the two nut sleeves 16 gradually approach each other. This movement is transmitted to the protective housing 9 through the limit block 17, causing the two protective housings 9 to approach each other until they tightly surround the drill bit 8. During this process, the sealing gaskets 18 play a crucial role. They are installed on the contact surfaces of the two protective housings 9. When the protective housings 9 approach and contact each other, the sealing gaskets 18 are compressed, forming an effective sealing barrier to prevent water slag, gas, etc. generated during the drilling process from escaping through the gaps between the protective housings 9. As the protective housings 9 are tightly closed, the drilling machine 2 starts to work, and the drill bit 8 penetrates the coal seam. Due to the enclosure of the protective housing 9 and the sealing effect of the sealing gaskets 18, the water slag and gas generated during the drilling process are effectively restricted inside the protective housing 9, reducing the potential hazards to the working environment and personnel. By effectively collecting and controlling the water slag and gas generated during the drilling process, the pollution and noise of the working environment are reduced, and the comfort and work efficiency of the operators are improved.

[0031] When the drilling machine 2 starts to work, the water pump is started, and it conveys the water in the water tank 6 to the water storage pipe 12 through the water delivery pipe 7. With the continuous influx of water, the water pressure in the water storage pipe 12 gradually increases. When it reaches a certain pressure, the water will spray out in an atomized form from the nozzle 13. These water mists can quickly cover the surrounding of the drill bit 8, effectively spraying and suppressing the dust generated during drilling, reducing the dust concentration in the air, and improving the working environment. Through the continuous spraying of water mists from the nozzle 13, the dust generated during drilling can be quickly wetted and settled, greatly reducing the dust concentration in the air and reducing the health hazards of dust to the operators. The use of the spray dust suppression system not only reduces the flying of dust but also reduces the noise and temperature at the working site, providing a more comfortable and safe working environment for the operators.

[0032] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A gas outburst prevention device for coal mines, comprising a machine body (1), characterized in that, One side of the body (1) is fixedly connected with a fixing plate (3). Above the fixing plate (3), there is an installation box (4). The bottom of the installation box (4) is fixedly connected with both sides of the top of the fixing plate (3) through two cylinders (5). A limiting groove is opened on the side of the installation box (4) away from the body (1). On the side of the fixing plate (3) away from the body (1), a drilling machine (2) is fixedly connected. A drill bit (8) is arranged on the top of the drilling machine (2). On both sides of the drill bit (8), there are protective shells (9). Through grooves adapted to the outside of the drill bit (8) are opened at the bottoms of the two protective shells (9). A clamping assembly connected to the two protective shells (9) is arranged inside the installation box (4). Exhaust pipes (10) are communicated with the mutually remote sides of the two protective shells (9). A discharge pipe (11) is communicated with one side of one of the protective shells (9). Valves are installed on the exteriors of the two exhaust pipes (10) and the discharge pipe (11).

2. The gas outburst prevention device for coal mines according to claim 1, wherein The clamping assembly includes a motor (14) arranged on one side of the installation box (4). One side of the motor (14) is fixedly connected with the outer wall of one side of the installation box (4) through bolts. The output end of the motor (14) is drivingly connected with a bidirectional lead screw (15). The end of the bidirectional lead screw (15) is rotatably connected with the inner wall of one side of the installation box (4).

3. The gas outburst prevention device for coal mines according to claim 1, characterized in that, The clamping assembly further includes two screw sleeves (16) sleeved on both ends of the outside of the bidirectional lead screw (15). On the outer side of the outer circle of each of the two screw sleeves (16), a limiting block (17) in clearance fit with the limiting groove is fixedly connected. On the side of each of the two limiting blocks (17) away from the screw sleeve (16), it is fixedly connected with the adjacent outer side wall of the protective shell (9).

4. The coal mine gas outburst prevention device according to claim 1, characterized in that, On one side of the top of the body (1), a water tank (6) is fixedly connected. Two water delivery pipes (7) are symmetrically communicated with one side of the water tank (6). The end of the water delivery pipe (7) away from the water tank (6) penetrates through the side wall of the protective shell (9) and is communicated with a water storage pipe (12). One side of the water storage pipe (12) is fixedly connected with the adjacent inner side wall of the protective shell (9). Two spray heads (13) are fixedly connected to the side of the water storage pipe (12) away from the water delivery pipe (7).

5. A coal mine gas outburst prevention device according to claim 1, characterized in that, Sealing gaskets (18) are fixedly connected to the adjacent side walls of the two protective shells (9) and the inner wall of the through groove.

6. The coal mine gas outburst prevention device according to claim 4, characterized in that, A scale is fixedly connected to one side of the water tank (6).

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