Protective device for preventing leakage of hydrogen sulfide gas in underground coal mine

Abstract

The invention provides a protection device for preventing leakage of hydrogen sulfide gas in an underground coal mine. Comprising fixed bases fixed to the lower end of the interior of a coal mine tunnel, a top sealing body fixed to the upper end of the interior of the coal mine tunnel, movable rails installed on the fixed bases and the top sealing body correspondingly, a sealing stand column arranged between the fixed bases and the top sealing body, a first protection device, a second protection device and a plugging device. The first protection device is fixed on a sliding block on the inner side of the movable track and sequentially penetrates through the spaced sealing stand columns; the second protection device and the first protection device are correspondingly arranged, and the second protection device is fixed on a sliding block on the outer side of the movable track; the multiple sets of plugging devices correspond to the first protection devices and are arranged on the two sides of the first protection devices in a sliding mode correspondingly. Leakage positions are isolated in time, diffusion is avoided, alkali spraying neutralization is carried out, harm of leaked hydrogen sulfide gas is reduced, leakage points are accurately positioned, and plugging is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of mine safety protection, and in particular to a protection device for preventing hydrogen sulfide gas leakage in coal mines. Background Art

[0002] Hydrogen sulfide is a colorless, highly toxic and acidic gas with the smell of rotten eggs. Its toxicity mainly comes from combining with hemoglobin to form sulfhemoglobin, which causes hypoxia in human tissues. In coal mines, hydrogen sulfide gas mainly comes from coal seams, groundwater bodies and coal rock crushing process. Hydrogen sulfide gas has the characteristics of long-term stability. In the process of coal mining, hydrogen sulfide in the coal seam is released into the tunnel or mining face as the coal seam is crushed, which endangers the health of workers.

[0003] At present, hydrogen sulfide leakage is generally dealt with in coal mines by ventilation dilution and chemical neutralization plugging and isolation. However, the existing technology is mainly a remedial measure for hydrogen sulfide gas leakage, and the leakage point cannot be isolated in time during the treatment, resulting in rapid diffusion of hydrogen sulfide gas and causing great harm.

[0004] Therefore, it is necessary to provide a protective device for preventing hydrogen sulfide gas leakage in coal mines to solve the problems raised in the above background technology. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention proposes a protective device for preventing hydrogen sulfide gas leakage in coal mines. By setting up sealing columns and protective devices, when hydrogen sulfide gas leakage is detected, the leakage location is isolated in time to avoid further diffusion of the hydrogen sulfide gas; by setting up a spray component, the hydrogen sulfide gas in the isolation area is sprayed with alkali to neutralize and reduce the harm of the leaked hydrogen sulfide gas; by setting up a plugging device, the leakage point is accurately located and plugged, and during the plugging process, the hydrogen sulfide gas is extracted to prevent continuous leakage from affecting the plugging effect.

[0006] In view of this, a protective device for preventing hydrogen sulfide gas leakage in a coal mine of the present invention comprises a fixed base fixed at the lower end of the coal mine tunnel, a top sealing body fixed at the upper end of the coal mine tunnel, a movable track installed on the fixed base and the top sealing body, a sealing column arranged between the fixed base and the top sealing body, a first protective device, a second protective device and a blocking device;

[0007] A plurality of sliding blocks are provided on both sides of each moving track, and sealing strips are provided at the centers of the opposite sides of the two moving tracks;

[0008] The first protection device is fixed on the inner sliding block of the moving track and passes through the spaced sealing columns in sequence;

[0009] The second protection device is arranged corresponding to the first protection device, the second protection device is fixed on the outer sliding block of the moving track, and passes through the sealing columns between two adjacent first protection devices in sequence;

[0010] Several groups of blocking devices are arranged corresponding to the first protection devices, and each group is symmetrically distributed with two blocking devices, which are slidably arranged on both sides of the first protection device respectively.

[0011] The top sealing body and the sealing column are provided with elastic sealing surfaces on one side adjacent to the inner wall of the tunnel, and a pop-up mechanism is provided inside, and monitoring devices are provided on both sides of the sealing column perpendicular to the inner wall of the tunnel.

[0012] The first protection device comprises:

[0013] The first protective plate body has upper and lower sides respectively fixed on the sliding block inside the moving track and fitted with the sealing strip, and the interior of the first protective plate body is divided into two parts, respectively storing an alkaline solution and a plugging material;

[0014] A plurality of first partition plates are linearly distributed and fixed on both sides of the first protective plate body;

[0015] A plurality of first spray assemblies are linearly distributed and slidably disposed between two first partition plates, and a driving motor is disposed at both ends of each first spray assembly;

[0016] Two vertical slideways are symmetrically arranged and fixed on two side surfaces adjacent to the first partition plate.

[0017] The second protection device comprises:

[0018] The second protective plate body has upper and lower sides respectively fixed on the sliding blocks outside the moving track and in contact with the sealing strip, and an alkaline solution is stored inside the second protective plate body;

[0019] A plurality of second partition plates are linearly distributed and fixed on both sides of the second protective plate body;

[0020] A plurality of second spray assemblies are linearly distributed and slidably arranged between two second partition plates, and a driving motor is arranged at both ends of each second spray assembly.

[0021] The blocking device comprises:

[0022] A movable base is fixed on a slide block of a vertical slideway on the side of the first protective plate body;

[0023] The adjusting body is slidably arranged on the moving base, and the sliding direction is perpendicular to the sliding direction of the moving base on the vertical slideway;

[0024] A telescopic annular surface is fixed to the end of the regulating body adjacent to the inner wall of the laneway;

[0025] The smoothing and plugging assembly is rotatably arranged at the inner center of the telescopic ring surface and is rotatably connected to the regulating body;

[0026] The grouting assembly is rotatably disposed in the adjusting body, is rotatably connected to the leveling and plugging assembly, and is fixedly connected to a location for storing plugging materials inside the first protective plate body through a pipeline;

[0027] The air extraction component is rotatably arranged at the center of the grouting component, is slidably connected to the grouting component, and is fixedly connected to the position where the alkaline solution is stored inside the first protective plate body through a pipeline.

[0028] The adjusting body is provided with a rotating motor, the rotating motor is fixed with a transmission gear, and the transmission gear is rotationally connected with the smoothing and plugging assembly.

[0029] The leveling and plugging assembly comprises:

[0030] A center body, rotatably disposed at the center of the regulating body;

[0031] The rotating gear ring is fixed on the center body and meshes with the transmission gear;

[0032] The leveling turntable is located inside the telescopic ring surface and is fixedly connected with the center body.

[0033] The grouting assembly comprises:

[0034] The grouting pipe is rotatably arranged in the adjusting body and is rotatably connected to the smoothing turntable;

[0035] A conveying ring body is fixed in the adjusting body and is rotatably connected to the grouting pipeline. The conveying ring body is fixedly connected to the position where the plugging material is stored inside the first protective plate body through the pipeline.

[0036] A plurality of limit arc blocks are provided in an annular distribution and fixed on the inner wall of the front end of the grouting pipe, and the inner side of the limit arc block is in contact with the exhaust assembly;

[0037] The middle grouting ports are provided with a plurality of circular distributions and are spaced apart from the limiting arc blocks;

[0038] A plurality of side grouting ports are provided in an annular distribution and are arranged on the side wall of the grouting pipe and do not overlap with the center body.

[0039] The air extraction component comprises:

[0040] An air extraction pipeline is rotatably arranged in the grouting pipeline and is slidably connected to the grouting pipeline. The tail end of the air extraction pipeline is fixedly connected to the position where the alkaline solution is stored inside the first protective plate body through a pipeline. A plurality of air sampling ports are arranged on the front side wall of the air extraction pipeline.

[0041] A drill bit is fixed to the front end of the air extraction pipeline;

[0042] A plurality of arc-shaped clamping blocks are provided in an annular distribution, fixed on the outer wall of the exhaust pipe, corresponding to the middle grouting port on the grouting pipe, and spaced apart from the limiting arc blocks.

[0043] The beneficial effects of the present invention are:

[0044] In the present invention, by setting up sealing columns and protective devices, when hydrogen sulfide gas leakage is monitored, the leakage position is isolated in time to avoid further diffusion of the hydrogen sulfide gas; by setting up a spray component, the hydrogen sulfide gas in the isolation area is sprayed with alkali to neutralize it, thereby reducing the harm of the leaked hydrogen sulfide gas; by setting up a plugging device, the leakage point is accurately located and plugged, and in the plugging process, the hydrogen sulfide gas is extracted to prevent continuous leakage from affecting the plugging effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The overall structural diagram of a protective device for preventing hydrogen sulfide gas leakage in coal mines;

[0046] Figure 2 The present invention is a schematic diagram of the structure of a protective device for preventing hydrogen sulfide gas leakage in a coal mine;

[0047] Figure 3 This is a schematic diagram of the structure of a plugging device in a protective device for preventing hydrogen sulfide gas leakage in a coal mine;

[0048] Figure 4 It is a schematic diagram of the side structure of a plugging device in a protective device for preventing hydrogen sulfide gas leakage in a coal mine;

[0049] Figure 5 This is a schematic diagram of the structure of a leveling and plugging component in a protective device for preventing hydrogen sulfide gas leakage in a coal mine;

[0050] Figure 6 It is a cross-sectional view of a plugging device in a protective device for preventing hydrogen sulfide gas leakage in a coal mine;

[0051] Figure 7 This is a schematic diagram of the structure of a grouting component and a gas extraction component in a protective device for preventing hydrogen sulfide gas leakage in a coal mine;

[0052] Figure 8This is a schematic diagram of the structure of position A in a protective device for preventing hydrogen sulfide gas leakage in coal mines;

[0053] In the figure: 1, fixed base; 2, movable track; 21, sealing strip; 3, top sealing body; 4, sealing column; 5, first protective device; 51, first protective plate body; 52, first partition plate; 53, first spray assembly; 54, vertical slide; 6, second protective device; 61, second protective plate body; 62, second partition plate; 63, second spray assembly; 7, blocking device; 71, movable base; 72, adjustment body; 7 21. Rotating motor; 722. Transmission gear; 73. Telescopic ring surface; 74. Smoothing and plugging assembly; 741. Center body; 742. Rotating gear ring; 743. Smoothing turntable; 75. Grouting assembly; 751. Grouting pipeline; 752. Conveying ring body; 753. Limiting arc block; 754. Middle grouting port; 755. Side grouting port; 76. Exhaust assembly; 761. Exhaust pipeline; 762. Drill bit; 763. Arc block. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0055] See also Figure 1-8 As shown, a protective device for preventing hydrogen sulfide gas leakage in a coal mine of the present invention comprises a fixed base 1 fixed at the lower end of the coal mine tunnel and a top sealing body 3 at the upper end, a movable track 2 respectively installed on the fixed base 1 and the top sealing body 3, a sealing column 4 arranged between the fixed base 1 and the top sealing body 3, a first protective device 5, a second protective device 6 and a plugging device 7;

[0056] A plurality of sliding blocks are provided on both sides of each moving track 2, and sealing strips 21 are provided at the centers of opposite sides of the two moving tracks 2;

[0057] The first protection device 5 is fixed on the inner sliding block of the moving track 2 and passes through the spaced sealing columns 4 in sequence;

[0058] The second protection device 6 is arranged corresponding to the first protection device 5 , and the second protection device 6 is fixed on the outer sliding block of the moving track 2 , and passes through the sealing columns 4 between two adjacent first protection devices 5 in sequence;

[0059] Several groups of blocking devices 7 are provided corresponding to the first protection devices 5 , and each group is symmetrically provided with two blocking devices 7 , which are slidably provided on both sides of the first protection device 5 .

[0060] In this embodiment, the fixed base 1 provides fixed support for the protective device as a whole; the top sealing body 3 is arranged in parallel with the fixed base 1, and the fixed base 1 and the top sealing body 3 are respectively arranged at the upper and lower ends of the coal mine tunnel. Two movable tracks 2 are symmetrically distributed in the upper and lower directions, the lower movable track 2 is fixed on the fixed base 1, and the upper movable track 2 is fixed on the top sealing body 3. A plurality of sealing columns 4 are arranged in a straight line, the upper end of the sealing column 4 is fixed on the top sealing body 3, and the lower end of the sealing column 4 is fixed on the fixed base 1. A plurality of first protective devices 5 are arranged in a straight line. An elastic sealing surface is provided on one side of the top sealing body 3 and the sealing column 4 adjacent to the inner wall of the tunnel, a pop-up mechanism is provided inside, and monitoring devices are provided on both sides of the sealing column 4 perpendicular to the inner wall of the tunnel. That is to say, when the monitoring device on the side of the sealing column 4 detects that the hydrogen sulfide gas concentration between the two sealing columns 4 exceeds the set threshold value, the top sealing body 3 at the top of the area and the sealing columns 4 on both sides will pop out the elastic sealing surface through the pop-up mechanism, so that the elastic sealing surface fits with the inner wall of the tunnel. With the cooperation of the first protective device 5 and the second protective device 6, the area where the hydrogen sulfide gas leaks is sealed, effectively preventing the spread of hydrogen sulfide gas and causing harm to the health of workers, and at the same time facilitating the centralized treatment of hydrogen sulfide gas.

[0061] In this embodiment, the first protection device 5 includes:

[0062] The upper end and the lower end of the first protective plate body 51 are respectively fixed on the sliding block inside the moving track 2 and fit with the sealing strip 21. The interior of the first protective plate body 51 is divided into two parts, respectively storing an alkaline solution and a plugging material;

[0063] A plurality of first partition plates 52 are arranged in a straight line and fixed on both sides of the first protective plate body 51;

[0064] A plurality of first spray assemblies 53 are linearly distributed and slidably disposed between the two first partition plates 52, and a driving motor is disposed at both ends of each first spray assembly 53;

[0065] Two vertical slides 54 are symmetrically provided and fixed on two side surfaces adjacent to the first partition plate 52. That is, after the top sealing body 3 and the sealing column 4 seal the area where hydrogen sulfide gas leaks, the first spray assembly 53 in the first protective device 5 moves up and down between the first partition plates 52, and extracts the alkaline solution inside the first protective plate body 51 for spraying to neutralize the hydrogen sulfide gas, and at the same time, the vertical slide 54 drives the plugging device 7 to accurately locate the leakage point and plug it.

[0066] In this embodiment, the second protection device 6 includes:

[0067] The upper and lower ends of the second protective plate body 61 are respectively fixed on the sliding blocks outside the moving track 2 and fit with the sealing strip 21. The second protective plate body 61 stores an alkaline solution inside.

[0068] A plurality of second partition plates 62 are arranged in a straight line and fixed on both sides of the second protective plate body 61;

[0069] A plurality of second spray assemblies 63 are linearly distributed and slidably arranged between the second partition plates 62, and a driving motor is arranged at both ends of each second spray assembly 63. After the top sealing body 3 and the sealing column 4 seal the area where hydrogen sulfide gas leaks, the first spray assembly 53 in the first protective device 5 moves up and down between the first partition plates 52, and extracts the alkaline solution inside the first protective plate body 51 for spraying, and at the same time, the second spray assembly 63 in the second protective device 6 moves up and down between the second partition plates 62, and extracts the alkaline solution inside the second protective plate body 61 for spraying, so as to neutralize the hydrogen sulfide gas, and under the action of the driving motors at both ends of the spray assembly, the spray assembly rotates while moving up and down, so as to expand the spraying range and quickly neutralize the hydrogen sulfide gas in the closed area.

[0070] In this embodiment, the blocking device 7 comprises:

[0071] The movable base 71 is fixed on the slider of the vertical slideway 54 at the side of the first protection plate body 51;

[0072] The adjusting body 72 is slidably disposed on the movable base 71, and the sliding direction is perpendicular to the sliding direction of the movable base 71 on the vertical slideway 54;

[0073] The telescopic annular surface 73 is fixed to the end of the regulating body 72 adjacent to the inner wall of the lane;

[0074] The smoothing and plugging assembly 74 is rotatably disposed at the inner center of the telescopic annular surface 73 and is rotatably connected to the adjusting body 72;

[0075] The grouting assembly 75 is rotatably disposed in the adjusting body 72, and is rotatably connected to the leveling and plugging assembly 74, and is fixedly connected to the location where the plugging material is stored inside the first protective plate body 51 through a pipeline;

[0076] The exhaust assembly 76 is rotatably arranged at the center of the grouting assembly 75, and is slidably connected to the grouting assembly 75, and is fixedly connected to the position where the alkaline solution is stored inside the first protective plate body 51 through a pipeline. That is to say, driven by the vertical slide 54, the plugging device 7 is accurately positioned at the leakage point, and by adjusting the main body 72 to move on the movable base 71, it drives the telescopic ring surface 73 to accurately seal the leakage point, and then the spray assembly neutralizes the hydrogen sulfide gas in the closed area by spraying alkaline solution. Then, driven by the exhaust assembly 76, the grouting assembly 75 and the exhaust assembly 76 rotate synchronously, and at the same time, the main body 72 is adjusted to continuously move on the movable base 71 toward the direction of the inner wall of the tunnel, compressing the telescopic ring surface 73, so that the exhaust assembly 76 drills into the leakage point, and then the exhaust assembly 76 stops rotating to extract and transport the hydrogen sulfide gas at the leakage point. The alkaline solution is moved to the position of the first protective plate body 51 to be neutralized. At the same time, the grouting component 75 extracts and transports the sealing material in the first protective plate body 51. The sealing material is transported to between the leveling sealing component 74 and the inner wall of the tunnel through the grouting component 75. Under the action of the leveling sealing component 74, the area around the leakage point is sealed. Then the exhaust component 76 is slid and extracted in the grouting component 75 to inject the sealing material into the hole corresponding to the exhaust component 76. The leakage point is completely sealed by the sealing material, which effectively prevents the continuous leakage of hydrogen sulfide gas during single-point sealing, or leaks through the surrounding leakage points again, thereby effectively improving the sealing effect.

[0077] In this embodiment, the adjusting body 72 is provided with a rotating motor 721, and a transmission gear 722 is fixed to the rotating motor 721, and the transmission gear 722 is rotatably connected with the smoothing and plugging assembly 74. That is, driven by the rotating motor 721, the transmission gear 722 rotates, driving the smoothing and plugging assembly 74 to rotate, and then the smoothing and plugging assembly 74 completely plugs the surroundings of the leakage point through the plugging material to prevent the emergence of new leakage points.

[0078] In this embodiment, the smoothing and plugging assembly 74 includes:

[0079] A central body 741, rotatably disposed at the center of the adjusting body 72;

[0080] The rotating gear ring 742 is fixed on the central body 741 and meshes with the transmission gear 722;

[0081] The smoothing turntable 743 is located inside the telescopic ring surface 73 and is fixedly connected to the central body 741. That is, driven by the transmission gear 722, the rotating gear ring 742 drives the central body 741 to rotate, thereby driving the smoothing turntable 743 to rotate, and the rotation direction of the smoothing turntable 743 is the opening direction of the smoothing turntable 743, which can ensure that the plugging materials transported by the grouting assembly 75 are between the smoothing turntable 743 and the inner wall of the tunnel, reducing the drop of the plugging materials and reducing consumption.

[0082] In this embodiment, the grouting assembly 75 includes:

[0083] The grouting pipe 751 is rotatably disposed in the adjusting body 72 and is rotatably connected to the smoothing turntable 743;

[0084] The conveying ring body 752 is fixed in the adjusting body 72 and is rotatably connected to the grouting pipe 751. The conveying ring body 752 is fixedly connected to the position where the plugging material is stored inside the first protective plate body 51 through the pipe.

[0085] A plurality of limiting arc blocks 753 are provided in an annular distribution and fixed on the inner wall of the front end of the grouting pipe 751, and the inner side of the limiting arc block 753 is in contact with the air extraction component 76;

[0086] The middle grouting ports 754 are provided in a plurality in an annular distribution and are spaced apart from the limiting arc blocks 753;

[0087] There are a plurality of side grouting ports 755 distributed in an annular manner, which are arranged on the side wall of the grouting pipe 751 and do not overlap with the central body 741. That is to say, when the air extraction component 76 goes deep into the leakage point for extraction, the conveying ring body 752 in the grouting component 75 conveys the plugging material to the leveling turntable 743 through the side grouting ports 755 on the side wall of the grouting pipe 751. Under the continuous rotation of the leveling turntable 743, the leakage point is blocked to prevent the emergence of new leakage points. After the blocking is completed, the air extraction component 76 moves in the grouting pipe 751 to open the middle grouting port 754, and then the plugging material is injected into the hole of the leakage point through the middle grouting port 754 to completely seal the leakage point.

[0088] In this embodiment, the air extraction component 76 includes:

[0089] The air extraction pipeline 761 is rotatably disposed in the grouting pipeline 751 and is slidably connected to the grouting pipeline 751. The tail end of the air extraction pipeline 761 is fixedly connected to the position where the alkaline solution is stored inside the first protective plate body 51 through a pipeline. A plurality of air sampling ports are provided on the front side wall of the air extraction pipeline 761.

[0090] A drill bit 762 is fixed to the front end of the air extraction pipe 761;

[0091] There are multiple arc-shaped blocks 763 distributed in an annular manner, fixed on the outer wall of the exhaust pipe 761 , corresponding to the middle grouting port 754 on the grouting pipe 751 , and spaced apart from the limiting arc blocks 753 . That is to say, since the arc-shaped block 763 on the exhaust pipe 761 and the limiting arc block 753 on the grouting pipe 751 are stuck to each other, when the exhaust pipe 761 rotates, the grouting pipe 751 rotates synchronously, and under the movement of the adjusting body 72, the drill bit 762 is driven by the exhaust pipe 761 to rotate and drill into the leakage point on the inner wall of the tunnel, and then the hydrogen sulfide gas at the leakage point is extracted through the exhaust pipe 761. After the grouting assembly 75 completes the plugging around the leakage point, the exhaust pipe 761 slides in the grouting pipe 751, so that the arc-shaped block 763 is separated from the limiting arc block 753, and the middle grouting port 754 is opened, and then the plugging material is injected into the hole of the leakage point through the middle grouting port 754 to completely seal the leakage point.

[0092] In the specific implementation, first, when the monitoring device on the side of the sealing column 4 detects that the hydrogen sulfide gas concentration between the two sealing columns 4 exceeds the set threshold value, the top sealing body 3 at the top of the area and the sealing columns 4 on both sides pop out the elastic sealing surface through the pop-up mechanism, so that the elastic sealing surface fits with the inner wall of the tunnel, and with the cooperation of the first protective device 5 and the second protective device 6, the area where the hydrogen sulfide gas leaks is sealed, and then the sealing device 7 is driven by the vertical slide 54 to accurately locate the leakage point, and by adjusting the main body 72 to move on the movable base 71, the telescopic annular surface 73 is driven to accurately seal the leakage point, and then the spray component sprays alkaline solution to neutralize the hydrogen sulfide gas in the closed area by moving up and down and rotating the main body. After the leaked hydrogen sulfide gas in the closed area is neutralized, the grouting component 75 and the exhaust component 76 are driven by the exhaust component 76 to rotate synchronously, and at the same time, the main body 72 is adjusted to continue to move toward the direction of the inner wall of the tunnel on the movable base 71, The telescopic annular surface 73 is compressed to allow the air extraction component 76 to drill into the leakage point, and then the air extraction component 76 stops rotating, and the hydrogen sulfide gas at the leakage point is extracted through the air extraction pipeline 761. At the same time, the conveying ring body 752 in the grouting component 75 conveys the plugging material to the leveling turntable 743 through the side grouting port 755 on the side wall of the grouting pipeline 751. Under the continuous rotation of the leveling turntable 743, the area around the leakage point is blocked to prevent the emergence of new leakage points. After the plugging is completed, the air is extracted. The component 76 moves in the grouting pipe 751, opens the middle grouting port 754, and then injects the sealing material into the hole at the leakage point through the middle grouting port 754 to completely seal the leakage point. Then, the main body 72 is adjusted to move on the movable base 71 to make the sealing device 7 separate from the leakage point, and then the spray component is started again to neutralize the gas in the closed area again. After the treatment, the gas is discharged, and then the top sealing body 3 and the sealing columns 4 on both sides in the area can be reset and restored.

[0093] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A protective device for preventing hydrogen sulfide gas leakage in coal mines, characterized in that: The invention comprises a fixed base (1) fixed at the lower end of the interior of a coal mine tunnel, a top sealing body (3) fixed at the upper end of the interior of the coal mine tunnel, a movable track (2) respectively installed on the fixed base (1) and the top sealing body (3), a sealing column (4) arranged between the fixed base (1) and the top sealing body (3), a first protective device (5), a second protective device (6) and a blocking device (7); A plurality of sliding blocks are provided on both sides of each of the movable rails (2), and sealing strips (21) are provided at the centers of opposite sides of the two movable rails (2); The first protection device (5) is fixed on the inner sliding block of the moving track (2) and passes through the spaced sealing columns (4) in sequence; The second protective device (6) is arranged corresponding to the first protective device (5), the second protective device (6) is fixed on the outer sliding block of the movable track (2), and sequentially passes through the sealing columns (4) between two adjacent first protective devices (5); The blocking device (7) and the first protective device (5) are provided in a plurality of groups corresponding to each other, and each group is provided with two symmetrically distributed devices, which are slidably arranged on both sides of the first protective device (5).

2. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 1, characterized in that: The top sealing body (3) and the sealing column (4) are provided with elastic sealing surfaces on one side adjacent to the inner wall of the tunnel, and a pop-up mechanism is provided inside, and monitoring devices are provided on both sides of the sealing column (4) perpendicular to the inner wall of the tunnel.

3. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 1, characterized in that: The first protection device (5) comprises: The first protective plate body (51) is fixed on the sliding block inside the moving track (2) at its upper and lower sides, and is in contact with the sealing strip (21). The interior of the first protective plate body (51) is divided into two parts, respectively storing an alkaline solution and a plugging material; A plurality of first partition plates (52) are linearly distributed and fixed on both sides of the first protective plate body (51); A plurality of first spray assemblies (53) are linearly distributed and slidably arranged between the two first partition plates (52), and a driving motor is provided at both ends of each first spray assembly (53); Two vertical slideways (54) are symmetrically arranged and fixed on two side surfaces adjacent to the first partition plate (52).

4. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 3, characterized in that: The second protection device (6) comprises: The second protective plate body (61) is fixed on the sliding blocks outside the moving track (2) at the upper and lower sides respectively, and is in contact with the sealing strip (21), and an alkaline solution is stored inside the second protective plate body (61); A plurality of second partition plates (62) are linearly distributed and fixed on both sides of the second protective plate body (61); A plurality of second spray assemblies (63) are linearly distributed and slidably arranged between the two second partition plates (62), and a driving motor is provided at both ends of each second spray assembly (63).

5. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 4, characterized in that: The blocking device (7) comprises: A movable base (71) is fixed on a slide block of a vertical slideway (54) on the side of the first protective plate body (51); An adjusting body (72) is slidably arranged on the movable base (71), and a sliding direction thereof is perpendicular to a sliding direction of the movable base (71) on the vertical slideway (54); A telescopic annular surface (73) is fixed to one end of the regulating body (72) adjacent to the inner wall of the lane; A smoothing and plugging assembly (74) is rotatably disposed at the inner center of the telescopic annular surface (73) and is rotatably connected to the regulating body (72); A grouting assembly (75) is rotatably disposed in the adjusting body (72), is rotatably connected to the leveling and plugging assembly (74), and is fixedly connected to a location for storing plugging materials inside the first protective plate body (51) through a pipeline; The air extraction component (76) is rotatably arranged at the center of the grouting component (75), is slidably connected to the grouting component (75), and is fixedly connected to the position where the alkaline solution is stored inside the first protective plate body (51) through a pipeline.

6. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 5, characterized in that: The adjusting body (72) is provided with a rotating motor (721), a transmission gear (722) is fixed on the rotating motor (721), and the transmission gear (722) is rotationally connected to the smoothing and plugging assembly (74).

7. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 6, characterized in that: The smoothing and plugging assembly (74) comprises: A central body (741) is rotatably disposed at the center of the adjusting body (72); A rotating gear ring (742) is fixed on the central body (741) and meshes with the transmission gear (722); The leveling turntable (743) is located inside the telescopic annular surface (73) and is fixedly connected to the central body (741).

8. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 7, characterized in that: The grouting assembly (75) comprises: A grouting pipe (751) is rotatably disposed in the adjusting body (72) and is rotatably connected to the smoothing turntable (743); A conveying ring body (752) is fixed in the adjusting body (72) and is rotatably connected to the grouting pipe (751); the conveying ring body (752) is fixedly connected to a position for storing plugging materials inside the first protective plate body (51) through a pipe; A plurality of limiting arc blocks (753) are provided in an annular distribution and fixed on the inner wall of the front end of the grouting pipe (751), and the inner side of the limiting arc block (753) is in contact with the air extraction component (76); A plurality of middle grouting ports (754) are provided in an annular distribution and are spaced apart from the limiting arc blocks (753); A plurality of side grouting ports (755) are provided in an annular distribution and are arranged on the side wall of the grouting pipe (751) and do not overlap with the central body (741).

9. A protective device for preventing hydrogen sulfide gas leakage in coal mines according to claim 8, characterized in that: The air extraction assembly (76) comprises: An air extraction pipeline (761) is rotatably disposed in the grouting pipeline (751) and is slidably connected to the grouting pipeline (751); the tail end of the air extraction pipeline (761) is fixedly connected to the position where the alkaline solution is stored inside the first protective plate body (51) through a pipeline; and a plurality of air sampling ports are provided on the front end side wall of the air extraction pipeline (761); A drill bit (762) is fixed to the front end of the air extraction pipeline (761); A plurality of arc-shaped clamping blocks (763) are provided in an annular distribution, fixed on the outer wall of the exhaust pipe (761), corresponding to the middle grouting port (754) on the grouting pipe (751), and spaced apart from the limiting arc blocks (753).

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